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authorLinus Torvalds <torvalds@linux-foundation.org>2019-11-27 20:55:39 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2019-11-27 20:55:39 +0300
commit00074a7007c24f947a9f9baf66bf5db2fe651ee9 (patch)
tree828f1ae0a06b2cf839293ae0c1a49e00c1c59b1f
parent89d57dddd7d319ded00415790a0bb3c954b7e386 (diff)
parent9480029fe5c24d482efad38dc631bd555fc7afe2 (diff)
downloadlinux-00074a7007c24f947a9f9baf66bf5db2fe651ee9.tar.xz
Merge tag 'for-v5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply
Pull power supply and reset updates from Sebastian Reichel: - test_power: add support for current and charge_counter - cpcap-charger: improve charge calculation and limit default charge voltage - ab8500: convert to IIO - misc small fixes all over drivers * tag 'for-v5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply: (29 commits) power: supply: bd70528: Add MODULE_ALIAS to allow module auto loading power: supply: ab8500_charger: Fix inconsistent IS_ERR and PTR_ERR power: supply: cpcap-charger: cpcap_charger_voltage_to_regval() can be static power: supply: cpcap-battery: Add basic coulomb counter calibrate support power: supply: cpcap-battery: Read and save integrator register CCI power: supply: cpcap-battery: Simplify short term power average calculation power: supply: cpcap-battery: Simplify coulomb counter calculation with div_s64 power: supply: cpcap-battery: Move coulomb counter units per lsb to ddata power: supply: cpcap-charger: Allow changing constant charge voltage power: supply: cpcap-battery: Fix handling of lowered charger voltage power: supply: cpcap-charger: Improve battery detection power: supply: cpcap-battery: Check voltage before orderly_poweroff power: supply: cpcap-charger: Limit voltage to 4.2V for battery power: supply: ab8500: Handle invalid IRQ from platform_get_irq_byname() power: supply: ab8500_fg: Do not free non-requested IRQs in probe's error path power: supply: ab8500: Cleanup probe in reverse order power: reset: at91: fix __le32 cast in reset code power: supply: abx500_chargalg: Fix code indentation mfd: Switch the AB8500 GPADC to IIO iio: adc: New driver for the AB8500 GPADC ...
-rw-r--r--Documentation/devicetree/bindings/mfd/ab8500.txt119
-rw-r--r--Documentation/devicetree/bindings/power/supply/cpcap-charger.txt9
-rw-r--r--MAINTAINERS1
-rw-r--r--arch/arm/boot/dts/motorola-cpcap-mapphone.dtsi6
-rw-r--r--drivers/hwmon/Kconfig3
-rw-r--r--drivers/hwmon/ab8500.c65
-rw-r--r--drivers/iio/adc/Kconfig10
-rw-r--r--drivers/iio/adc/Makefile1
-rw-r--r--drivers/iio/adc/ab8500-gpadc.c1218
-rw-r--r--drivers/mfd/Kconfig7
-rw-r--r--drivers/mfd/Makefile1
-rw-r--r--drivers/mfd/ab8500-debugfs.c715
-rw-r--r--drivers/mfd/ab8500-gpadc.c1075
-rw-r--r--drivers/power/reset/at91-reset.c6
-rw-r--r--drivers/power/reset/at91-sama5d2_shdwc.c8
-rw-r--r--drivers/power/supply/Kconfig2
-rw-r--r--drivers/power/supply/ab8500_btemp.c50
-rw-r--r--drivers/power/supply/ab8500_charger.c83
-rw-r--r--drivers/power/supply/ab8500_fg.c49
-rw-r--r--drivers/power/supply/abx500_chargalg.c8
-rw-r--r--drivers/power/supply/axp20x_usb_power.c8
-rw-r--r--drivers/power/supply/bd70528-charger.c1
-rw-r--r--drivers/power/supply/cpcap-battery.c271
-rw-r--r--drivers/power/supply/cpcap-charger.c222
-rw-r--r--drivers/power/supply/test_power.c61
-rw-r--r--include/linux/mfd/abx500/ab8500-gpadc.h75
26 files changed, 2044 insertions, 2030 deletions
diff --git a/Documentation/devicetree/bindings/mfd/ab8500.txt b/Documentation/devicetree/bindings/mfd/ab8500.txt
index cd9e90c5d171..b6bc30d7777e 100644
--- a/Documentation/devicetree/bindings/mfd/ab8500.txt
+++ b/Documentation/devicetree/bindings/mfd/ab8500.txt
@@ -69,6 +69,18 @@ Required child device properties:
- compatible : "stericsson,ab8500-[bm|btemp|charger|fg|gpadc|gpio|ponkey|
pwm|regulator|rtc|sysctrl|usb]";
+ A few child devices require ADC channels from the GPADC node. Those follow the
+ standard bindings from iio/iio-bindings.txt and iio/adc/adc.txt
+
+ abx500-temp : io-channels "aux1" and "aux2" for measuring external
+ temperatures.
+ ab8500-fg : io-channel "main_bat_v" for measuring main battery voltage,
+ ab8500-btemp : io-channels "btemp_ball" and "bat_ctrl" for measuring the
+ battery voltage.
+ ab8500-charger : io-channels "main_charger_v", "main_charger_c", "vbus_v",
+ "usb_charger_c" for measuring voltage and current of the
+ different charging supplies.
+
Optional child device properties:
- interrupts : contains the device IRQ(s) using the 2-cell format (see above)
- interrupt-names : contains names of IRQ resource in the order in which they were
@@ -102,8 +114,115 @@ ab8500 {
39 0x4>;
interrupt-names = "HW_CONV_END", "SW_CONV_END";
vddadc-supply = <&ab8500_ldo_tvout_reg>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ #io-channel-cells = <1>;
+
+ /* GPADC channels */
+ bat_ctrl: channel@1 {
+ reg = <0x01>;
+ };
+ btemp_ball: channel@2 {
+ reg = <0x02>;
+ };
+ main_charger_v: channel@3 {
+ reg = <0x03>;
+ };
+ acc_detect1: channel@4 {
+ reg = <0x04>;
+ };
+ acc_detect2: channel@5 {
+ reg = <0x05>;
+ };
+ adc_aux1: channel@6 {
+ reg = <0x06>;
+ };
+ adc_aux2: channel@7 {
+ reg = <0x07>;
+ };
+ main_batt_v: channel@8 {
+ reg = <0x08>;
+ };
+ vbus_v: channel@9 {
+ reg = <0x09>;
+ };
+ main_charger_c: channel@a {
+ reg = <0x0a>;
+ };
+ usb_charger_c: channel@b {
+ reg = <0x0b>;
+ };
+ bk_bat_v: channel@c {
+ reg = <0x0c>;
+ };
+ die_temp: channel@d {
+ reg = <0x0d>;
+ };
+ usb_id: channel@e {
+ reg = <0x0e>;
+ };
+ xtal_temp: channel@12 {
+ reg = <0x12>;
+ };
+ vbat_true_meas: channel@13 {
+ reg = <0x13>;
+ };
+ bat_ctrl_and_ibat: channel@1c {
+ reg = <0x1c>;
+ };
+ vbat_meas_and_ibat: channel@1d {
+ reg = <0x1d>;
+ };
+ vbat_true_meas_and_ibat: channel@1e {
+ reg = <0x1e>;
+ };
+ bat_temp_and_ibat: channel@1f {
+ reg = <0x1f>;
+ };
};
+ ab8500_temp {
+ compatible = "stericsson,abx500-temp";
+ io-channels = <&gpadc 0x06>,
+ <&gpadc 0x07>;
+ io-channel-name = "aux1", "aux2";
+ };
+
+ ab8500_battery: ab8500_battery {
+ stericsson,battery-type = "LIPO";
+ thermistor-on-batctrl;
+ };
+
+ ab8500_fg {
+ compatible = "stericsson,ab8500-fg";
+ battery = <&ab8500_battery>;
+ io-channels = <&gpadc 0x08>;
+ io-channel-name = "main_bat_v";
+ };
+
+ ab8500_btemp {
+ compatible = "stericsson,ab8500-btemp";
+ battery = <&ab8500_battery>;
+ io-channels = <&gpadc 0x02>,
+ <&gpadc 0x01>;
+ io-channel-name = "btemp_ball",
+ "bat_ctrl";
+ };
+
+ ab8500_charger {
+ compatible = "stericsson,ab8500-charger";
+ battery = <&ab8500_battery>;
+ vddadc-supply = <&ab8500_ldo_tvout_reg>;
+ io-channels = <&gpadc 0x03>,
+ <&gpadc 0x0a>,
+ <&gpadc 0x09>,
+ <&gpadc 0x0b>;
+ io-channel-name = "main_charger_v",
+ "main_charger_c",
+ "vbus_v",
+ "usb_charger_c";
+ };
+
ab8500-usb {
compatible = "stericsson,ab8500-usb";
interrupts = < 90 0x4
diff --git a/Documentation/devicetree/bindings/power/supply/cpcap-charger.txt b/Documentation/devicetree/bindings/power/supply/cpcap-charger.txt
index 80bd873c3b1d..6048f636783f 100644
--- a/Documentation/devicetree/bindings/power/supply/cpcap-charger.txt
+++ b/Documentation/devicetree/bindings/power/supply/cpcap-charger.txt
@@ -5,7 +5,8 @@ Required properties:
- interrupts: Interrupt specifier for each name in interrupt-names
- interrupt-names: Should contain the following entries:
"chrg_det", "rvrs_chrg", "chrg_se1b", "se0conn",
- "rvrs_mode", "chrgcurr1", "vbusvld", "battdetb"
+ "rvrs_mode", "chrgcurr2", "chrgcurr1", "vbusvld",
+ "battdetb"
- io-channels: IIO ADC channel specifier for each name in io-channel-names
- io-channel-names: Should contain the following entries:
"battdetb", "battp", "vbus", "chg_isense", "batti"
@@ -21,11 +22,13 @@ cpcap_charger: charger {
compatible = "motorola,mapphone-cpcap-charger";
interrupts-extended = <
&cpcap 13 0 &cpcap 12 0 &cpcap 29 0 &cpcap 28 0
- &cpcap 22 0 &cpcap 20 0 &cpcap 19 0 &cpcap 54 0
+ &cpcap 22 0 &cpcap 21 0 &cpcap 20 0 &cpcap 19 0
+ &cpcap 54 0
>;
interrupt-names =
"chrg_det", "rvrs_chrg", "chrg_se1b", "se0conn",
- "rvrs_mode", "chrgcurr1", "vbusvld", "battdetb";
+ "rvrs_mode", "chrgcurr2", "chrgcurr1", "vbusvld",
+ "battdetb";
mode-gpios = <&gpio3 29 GPIO_ACTIVE_LOW
&gpio3 23 GPIO_ACTIVE_LOW>;
io-channels = <&cpcap_adc 0 &cpcap_adc 1
diff --git a/MAINTAINERS b/MAINTAINERS
index 08bbf9649a1b..ee326c051612 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2021,6 +2021,7 @@ F: drivers/dma/ste_dma40*
F: drivers/hwspinlock/u8500_hsem.c
F: drivers/i2c/busses/i2c-nomadik.c
F: drivers/i2c/busses/i2c-stu300.c
+F: drivers/iio/adc/ab8500-gpadc.c
F: drivers/mfd/ab3100*
F: drivers/mfd/ab8500*
F: drivers/mfd/abx500*
diff --git a/arch/arm/boot/dts/motorola-cpcap-mapphone.dtsi b/arch/arm/boot/dts/motorola-cpcap-mapphone.dtsi
index d1eae47b83f6..08bae935605c 100644
--- a/arch/arm/boot/dts/motorola-cpcap-mapphone.dtsi
+++ b/arch/arm/boot/dts/motorola-cpcap-mapphone.dtsi
@@ -43,11 +43,13 @@
compatible = "motorola,mapphone-cpcap-charger";
interrupts-extended = <
&cpcap 13 0 &cpcap 12 0 &cpcap 29 0 &cpcap 28 0
- &cpcap 22 0 &cpcap 20 0 &cpcap 19 0 &cpcap 54 0
+ &cpcap 22 0 &cpcap 21 0 &cpcap 20 0 &cpcap 19 0
+ &cpcap 54 0
>;
interrupt-names =
"chrg_det", "rvrs_chrg", "chrg_se1b", "se0conn",
- "rvrs_mode", "chrgcurr1", "vbusvld", "battdetb";
+ "rvrs_mode", "chrgcurr2", "chrgcurr1", "vbusvld",
+ "battdetb";
mode-gpios = <&gpio3 29 GPIO_ACTIVE_LOW
&gpio3 23 GPIO_ACTIVE_LOW>;
io-channels = <&cpcap_adc 0 &cpcap_adc 1
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index 13a6b4afb4b3..5308c59d7001 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -40,7 +40,8 @@ comment "Native drivers"
config SENSORS_AB8500
tristate "AB8500 thermal monitoring"
- depends on AB8500_GPADC && AB8500_BM
+ depends on AB8500_GPADC && AB8500_BM && (IIO = y)
+ default n
help
If you say yes here you get support for the thermal sensor part
of the AB8500 chip. The driver includes thermal management for
diff --git a/drivers/hwmon/ab8500.c b/drivers/hwmon/ab8500.c
index 207f77f85a40..53f3379d799d 100644
--- a/drivers/hwmon/ab8500.c
+++ b/drivers/hwmon/ab8500.c
@@ -17,20 +17,24 @@
#include <linux/hwmon-sysfs.h>
#include <linux/mfd/abx500.h>
#include <linux/mfd/abx500/ab8500-bm.h>
-#include <linux/mfd/abx500/ab8500-gpadc.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/power/ab8500.h>
#include <linux/reboot.h>
#include <linux/slab.h>
#include <linux/sysfs.h>
+#include <linux/iio/consumer.h>
#include "abx500.h"
#define DEFAULT_POWER_OFF_DELAY (HZ * 10)
#define THERMAL_VCC 1800
#define PULL_UP_RESISTOR 47000
-/* Number of monitored sensors should not greater than NUM_SENSORS */
-#define NUM_MONITORED_SENSORS 4
+
+#define AB8500_SENSOR_AUX1 0
+#define AB8500_SENSOR_AUX2 1
+#define AB8500_SENSOR_BTEMP_BALL 2
+#define AB8500_SENSOR_BAT_CTRL 3
+#define NUM_MONITORED_SENSORS 4
struct ab8500_gpadc_cfg {
const struct abx500_res_to_temp *temp_tbl;
@@ -40,7 +44,8 @@ struct ab8500_gpadc_cfg {
};
struct ab8500_temp {
- struct ab8500_gpadc *gpadc;
+ struct iio_channel *aux1;
+ struct iio_channel *aux2;
struct ab8500_btemp *btemp;
struct delayed_work power_off_work;
struct ab8500_gpadc_cfg cfg;
@@ -82,15 +87,21 @@ static int ab8500_read_sensor(struct abx500_temp *data, u8 sensor, int *temp)
int voltage, ret;
struct ab8500_temp *ab8500_data = data->plat_data;
- if (sensor == BAT_CTRL) {
- *temp = ab8500_btemp_get_batctrl_temp(ab8500_data->btemp);
- } else if (sensor == BTEMP_BALL) {
+ if (sensor == AB8500_SENSOR_BTEMP_BALL) {
*temp = ab8500_btemp_get_temp(ab8500_data->btemp);
- } else {
- voltage = ab8500_gpadc_convert(ab8500_data->gpadc, sensor);
- if (voltage < 0)
- return voltage;
-
+ } else if (sensor == AB8500_SENSOR_BAT_CTRL) {
+ *temp = ab8500_btemp_get_batctrl_temp(ab8500_data->btemp);
+ } else if (sensor == AB8500_SENSOR_AUX1) {
+ ret = iio_read_channel_processed(ab8500_data->aux1, &voltage);
+ if (ret < 0)
+ return ret;
+ ret = ab8500_voltage_to_temp(&ab8500_data->cfg, voltage, temp);
+ if (ret < 0)
+ return ret;
+ } else if (sensor == AB8500_SENSOR_AUX2) {
+ ret = iio_read_channel_processed(ab8500_data->aux2, &voltage);
+ if (ret < 0)
+ return ret;
ret = ab8500_voltage_to_temp(&ab8500_data->cfg, voltage, temp);
if (ret < 0)
return ret;
@@ -164,10 +175,6 @@ int abx500_hwmon_init(struct abx500_temp *data)
if (!ab8500_data)
return -ENOMEM;
- ab8500_data->gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
- if (IS_ERR(ab8500_data->gpadc))
- return PTR_ERR(ab8500_data->gpadc);
-
ab8500_data->btemp = ab8500_btemp_get();
if (IS_ERR(ab8500_data->btemp))
return PTR_ERR(ab8500_data->btemp);
@@ -181,15 +188,25 @@ int abx500_hwmon_init(struct abx500_temp *data)
ab8500_data->cfg.tbl_sz = ab8500_temp_tbl_a_size;
data->plat_data = ab8500_data;
+ ab8500_data->aux1 = devm_iio_channel_get(&data->pdev->dev, "aux1");
+ if (IS_ERR(ab8500_data->aux1)) {
+ if (PTR_ERR(ab8500_data->aux1) == -ENODEV)
+ return -EPROBE_DEFER;
+ dev_err(&data->pdev->dev, "failed to get AUX1 ADC channel\n");
+ return PTR_ERR(ab8500_data->aux1);
+ }
+ ab8500_data->aux2 = devm_iio_channel_get(&data->pdev->dev, "aux2");
+ if (IS_ERR(ab8500_data->aux2)) {
+ if (PTR_ERR(ab8500_data->aux2) == -ENODEV)
+ return -EPROBE_DEFER;
+ dev_err(&data->pdev->dev, "failed to get AUX2 ADC channel\n");
+ return PTR_ERR(ab8500_data->aux2);
+ }
- /*
- * ADC_AUX1 and ADC_AUX2, connected to external NTC
- * BTEMP_BALL and BAT_CTRL, fixed usage
- */
- data->gpadc_addr[0] = ADC_AUX1;
- data->gpadc_addr[1] = ADC_AUX2;
- data->gpadc_addr[2] = BTEMP_BALL;
- data->gpadc_addr[3] = BAT_CTRL;
+ data->gpadc_addr[0] = AB8500_SENSOR_AUX1;
+ data->gpadc_addr[1] = AB8500_SENSOR_AUX2;
+ data->gpadc_addr[2] = AB8500_SENSOR_BTEMP_BALL;
+ data->gpadc_addr[3] = AB8500_SENSOR_BAT_CTRL;
data->monitored_sensors = NUM_MONITORED_SENSORS;
data->ops.read_sensor = ab8500_read_sensor;
diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig
index f0af3a42f53c..0b21dd405dd5 100644
--- a/drivers/iio/adc/Kconfig
+++ b/drivers/iio/adc/Kconfig
@@ -6,6 +6,16 @@
menu "Analog to digital converters"
+config AB8500_GPADC
+ bool "ST-Ericsson AB8500 GPADC driver"
+ depends on AB8500_CORE && REGULATOR_AB8500
+ default y
+ help
+ AB8500 Analog Baseband, mixed signal integrated circuit GPADC
+ (General Purpose Analog to Digital Converter) driver used to monitor
+ internal voltages, convert accessory and battery, AC (charger, mains)
+ and USB voltages integral to the U8500 platform.
+
config AD_SIGMA_DELTA
tristate
select IIO_BUFFER
diff --git a/drivers/iio/adc/Makefile b/drivers/iio/adc/Makefile
index ef9cc485fb67..fc1b6ebb0cde 100644
--- a/drivers/iio/adc/Makefile
+++ b/drivers/iio/adc/Makefile
@@ -4,6 +4,7 @@
#
# When adding new entries keep the list in alphabetical order
+obj-$(CONFIG_AB8500_GPADC) += ab8500-gpadc.o
obj-$(CONFIG_AD_SIGMA_DELTA) += ad_sigma_delta.o
obj-$(CONFIG_AD7124) += ad7124.o
obj-$(CONFIG_AD7266) += ad7266.o
diff --git a/drivers/iio/adc/ab8500-gpadc.c b/drivers/iio/adc/ab8500-gpadc.c
new file mode 100644
index 000000000000..fd5b18d7f0c2
--- /dev/null
+++ b/drivers/iio/adc/ab8500-gpadc.c
@@ -0,0 +1,1218 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) ST-Ericsson SA 2010
+ *
+ * Author: Arun R Murthy <arun.murthy@stericsson.com>
+ * Author: Daniel Willerud <daniel.willerud@stericsson.com>
+ * Author: Johan Palsson <johan.palsson@stericsson.com>
+ * Author: M'boumba Cedric Madianga
+ * Author: Linus Walleij <linus.walleij@linaro.org>
+ *
+ * AB8500 General Purpose ADC driver. The AB8500 uses reference voltages:
+ * VinVADC, and VADC relative to GND to do its job. It monitors main and backup
+ * battery voltages, AC (mains) voltage, USB cable voltage, as well as voltages
+ * representing the temperature of the chip die and battery, accessory
+ * detection by resistance measurements using relative voltages and GSM burst
+ * information.
+ *
+ * Some of the voltages are measured on external pins on the IC, such as
+ * battery temperature or "ADC aux" 1 and 2. Other voltages are internal rails
+ * from other parts of the ASIC such as main charger voltage, main and battery
+ * backup voltage or USB VBUS voltage. For this reason drivers for other
+ * parts of the system are required to obtain handles to the ADC to do work
+ * for them and the IIO driver provides arbitration among these consumers.
+ */
+#include <linux/init.h>
+#include <linux/bits.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+#include <linux/device.h>
+#include <linux/interrupt.h>
+#include <linux/spinlock.h>
+#include <linux/delay.h>
+#include <linux/pm_runtime.h>
+#include <linux/platform_device.h>
+#include <linux/completion.h>
+#include <linux/regulator/consumer.h>
+#include <linux/random.h>
+#include <linux/err.h>
+#include <linux/slab.h>
+#include <linux/mfd/abx500.h>
+#include <linux/mfd/abx500/ab8500.h>
+
+/* GPADC register offsets and bit definitions */
+
+#define AB8500_GPADC_CTRL1_REG 0x00
+/* GPADC control register 1 bits */
+#define AB8500_GPADC_CTRL1_DISABLE 0x00
+#define AB8500_GPADC_CTRL1_ENABLE BIT(0)
+#define AB8500_GPADC_CTRL1_TRIG_ENA BIT(1)
+#define AB8500_GPADC_CTRL1_START_SW_CONV BIT(2)
+#define AB8500_GPADC_CTRL1_BTEMP_PULL_UP BIT(3)
+/* 0 = use rising edge, 1 = use falling edge */
+#define AB8500_GPADC_CTRL1_TRIG_EDGE BIT(4)
+/* 0 = use VTVOUT, 1 = use VRTC as pull-up supply for battery temp NTC */
+#define AB8500_GPADC_CTRL1_PUPSUPSEL BIT(5)
+#define AB8500_GPADC_CTRL1_BUF_ENA BIT(6)
+#define AB8500_GPADC_CTRL1_ICHAR_ENA BIT(7)
+
+#define AB8500_GPADC_CTRL2_REG 0x01
+#define AB8500_GPADC_CTRL3_REG 0x02
+/*
+ * GPADC control register 2 and 3 bits
+ * the bit layout is the same for SW and HW conversion set-up
+ */
+#define AB8500_GPADC_CTRL2_AVG_1 0x00
+#define AB8500_GPADC_CTRL2_AVG_4 BIT(5)
+#define AB8500_GPADC_CTRL2_AVG_8 BIT(6)
+#define AB8500_GPADC_CTRL2_AVG_16 (BIT(5) | BIT(6))
+
+enum ab8500_gpadc_channel {
+ AB8500_GPADC_CHAN_UNUSED = 0x00,
+ AB8500_GPADC_CHAN_BAT_CTRL = 0x01,
+ AB8500_GPADC_CHAN_BAT_TEMP = 0x02,
+ /* This is not used on AB8505 */
+ AB8500_GPADC_CHAN_MAIN_CHARGER = 0x03,
+ AB8500_GPADC_CHAN_ACC_DET_1 = 0x04,
+ AB8500_GPADC_CHAN_ACC_DET_2 = 0x05,
+ AB8500_GPADC_CHAN_ADC_AUX_1 = 0x06,
+ AB8500_GPADC_CHAN_ADC_AUX_2 = 0x07,
+ AB8500_GPADC_CHAN_VBAT_A = 0x08,
+ AB8500_GPADC_CHAN_VBUS = 0x09,
+ AB8500_GPADC_CHAN_MAIN_CHARGER_CURRENT = 0x0a,
+ AB8500_GPADC_CHAN_USB_CHARGER_CURRENT = 0x0b,
+ AB8500_GPADC_CHAN_BACKUP_BAT = 0x0c,
+ /* Only on AB8505 */
+ AB8505_GPADC_CHAN_DIE_TEMP = 0x0d,
+ AB8500_GPADC_CHAN_ID = 0x0e,
+ AB8500_GPADC_CHAN_INTERNAL_TEST_1 = 0x0f,
+ AB8500_GPADC_CHAN_INTERNAL_TEST_2 = 0x10,
+ AB8500_GPADC_CHAN_INTERNAL_TEST_3 = 0x11,
+ /* FIXME: Applicable to all ASIC variants? */
+ AB8500_GPADC_CHAN_XTAL_TEMP = 0x12,
+ AB8500_GPADC_CHAN_VBAT_TRUE_MEAS = 0x13,
+ /* FIXME: Doesn't seem to work with pure AB8500 */
+ AB8500_GPADC_CHAN_BAT_CTRL_AND_IBAT = 0x1c,
+ AB8500_GPADC_CHAN_VBAT_MEAS_AND_IBAT = 0x1d,
+ AB8500_GPADC_CHAN_VBAT_TRUE_MEAS_AND_IBAT = 0x1e,
+ AB8500_GPADC_CHAN_BAT_TEMP_AND_IBAT = 0x1f,
+ /*
+ * Virtual channel used only for ibat conversion to ampere.
+ * Battery current conversion (ibat) cannot be requested as a
+ * single conversion but it is always requested in combination
+ * with other input requests.
+ */
+ AB8500_GPADC_CHAN_IBAT_VIRTUAL = 0xFF,
+};
+
+#define AB8500_GPADC_AUTO_TIMER_REG 0x03
+
+#define AB8500_GPADC_STAT_REG 0x04
+#define AB8500_GPADC_STAT_BUSY BIT(0)
+
+#define AB8500_GPADC_MANDATAL_REG 0x05
+#define AB8500_GPADC_MANDATAH_REG 0x06
+#define AB8500_GPADC_AUTODATAL_REG 0x07
+#define AB8500_GPADC_AUTODATAH_REG 0x08
+#define AB8500_GPADC_MUX_CTRL_REG 0x09
+#define AB8540_GPADC_MANDATA2L_REG 0x09
+#define AB8540_GPADC_MANDATA2H_REG 0x0A
+#define AB8540_GPADC_APEAAX_REG 0x10
+#define AB8540_GPADC_APEAAT_REG 0x11
+#define AB8540_GPADC_APEAAM_REG 0x12
+#define AB8540_GPADC_APEAAH_REG 0x13
+#define AB8540_GPADC_APEAAL_REG 0x14
+
+/*
+ * OTP register offsets
+ * Bank : 0x15
+ */
+#define AB8500_GPADC_CAL_1 0x0F
+#define AB8500_GPADC_CAL_2 0x10
+#define AB8500_GPADC_CAL_3 0x11
+#define AB8500_GPADC_CAL_4 0x12
+#define AB8500_GPADC_CAL_5 0x13
+#define AB8500_GPADC_CAL_6 0x14
+#define AB8500_GPADC_CAL_7 0x15
+/* New calibration for 8540 */
+#define AB8540_GPADC_OTP4_REG_7 0x38
+#define AB8540_GPADC_OTP4_REG_6 0x39
+#define AB8540_GPADC_OTP4_REG_5 0x3A
+
+#define AB8540_GPADC_DIS_ZERO 0x00
+#define AB8540_GPADC_EN_VBIAS_XTAL_TEMP 0x02
+
+/* GPADC constants from AB8500 spec, UM0836 */
+#define AB8500_ADC_RESOLUTION 1024
+#define AB8500_ADC_CH_BTEMP_MIN 0
+#define AB8500_ADC_CH_BTEMP_MAX 1350
+#define AB8500_ADC_CH_DIETEMP_MIN 0
+#define AB8500_ADC_CH_DIETEMP_MAX 1350
+#define AB8500_ADC_CH_CHG_V_MIN 0
+#define AB8500_ADC_CH_CHG_V_MAX 20030
+#define AB8500_ADC_CH_ACCDET2_MIN 0
+#define AB8500_ADC_CH_ACCDET2_MAX 2500
+#define AB8500_ADC_CH_VBAT_MIN 2300
+#define AB8500_ADC_CH_VBAT_MAX 4800
+#define AB8500_ADC_CH_CHG_I_MIN 0
+#define AB8500_ADC_CH_CHG_I_MAX 1500
+#define AB8500_ADC_CH_BKBAT_MIN 0
+#define AB8500_ADC_CH_BKBAT_MAX 3200
+
+/* GPADC constants from AB8540 spec */
+#define AB8500_ADC_CH_IBAT_MIN (-6000) /* mA range measured by ADC for ibat */
+#define AB8500_ADC_CH_IBAT_MAX 6000
+#define AB8500_ADC_CH_IBAT_MIN_V (-60) /* mV range measured by ADC for ibat */
+#define AB8500_ADC_CH_IBAT_MAX_V 60
+#define AB8500_GPADC_IBAT_VDROP_L (-56) /* mV */
+#define AB8500_GPADC_IBAT_VDROP_H 56
+
+/* This is used to not lose precision when dividing to get gain and offset */
+#define AB8500_GPADC_CALIB_SCALE 1000
+/*
+ * Number of bits shift used to not lose precision
+ * when dividing to get ibat gain.
+ */
+#define AB8500_GPADC_CALIB_SHIFT_IBAT 20
+
+/* Time in ms before disabling regulator */
+#define AB8500_GPADC_AUTOSUSPEND_DELAY 1
+
+#define AB8500_GPADC_CONVERSION_TIME 500 /* ms */
+
+enum ab8500_cal_channels {
+ AB8500_CAL_VMAIN = 0,
+ AB8500_CAL_BTEMP,
+ AB8500_CAL_VBAT,
+ AB8500_CAL_IBAT,
+ AB8500_CAL_NR,
+};
+
+/**
+ * struct ab8500_adc_cal_data - Table for storing gain and offset for the
+ * calibrated ADC channels
+ * @gain: Gain of the ADC channel
+ * @offset: Offset of the ADC channel
+ * @otp_calib_hi: Calibration from OTP
+ * @otp_calib_lo: Calibration from OTP
+ */
+struct ab8500_adc_cal_data {
+ s64 gain;
+ s64 offset;
+ u16 otp_calib_hi;
+ u16 otp_calib_lo;
+};
+
+/**
+ * struct ab8500_gpadc_chan_info - per-channel GPADC info
+ * @name: name of the channel
+ * @id: the internal AB8500 ID number for the channel
+ * @hardware_control: indicate that we want to use hardware ADC control
+ * on this channel, the default is software ADC control. Hardware control
+ * is normally only used to test the battery voltage during GSM bursts
+ * and needs a hardware trigger on the GPADCTrig pin of the ASIC.
+ * @falling_edge: indicate that we want to trigger on falling edge
+ * rather than rising edge, rising edge is the default
+ * @avg_sample: how many samples to average: must be 1, 4, 8 or 16.
+ * @trig_timer: how long to wait for the trigger, in 32kHz periods:
+ * 0 .. 255 periods
+ */
+struct ab8500_gpadc_chan_info {
+ const char *name;
+ u8 id;
+ bool hardware_control;
+ bool falling_edge;
+ u8 avg_sample;
+ u8 trig_timer;
+};
+
+/**
+ * struct ab8500_gpadc - AB8500 GPADC device information
+ * @dev: pointer to the containing device
+ * @ab8500: pointer to the parent AB8500 device
+ * @chans: internal per-channel information container
+ * @nchans: number of channels
+ * @complete: pointer to the completion that indicates
+ * the completion of an gpadc conversion cycle
+ * @vddadc: pointer to the regulator supplying VDDADC
+ * @irq_sw: interrupt number that is used by gpadc for software ADC conversion
+ * @irq_hw: interrupt number that is used by gpadc for hardware ADC conversion
+ * @cal_data: array of ADC calibration data structs
+ */
+struct ab8500_gpadc {
+ struct device *dev;
+ struct ab8500 *ab8500;
+ struct ab8500_gpadc_chan_info *chans;
+ unsigned int nchans;
+ struct completion complete;
+ struct regulator *vddadc;
+ int irq_sw;
+ int irq_hw;
+ struct ab8500_adc_cal_data cal_data[AB8500_CAL_NR];
+};
+
+static struct ab8500_gpadc_chan_info *
+ab8500_gpadc_get_channel(struct ab8500_gpadc *gpadc, u8 chan)
+{
+ struct ab8500_gpadc_chan_info *ch;
+ int i;
+
+ for (i = 0; i < gpadc->nchans; i++) {
+ ch = &gpadc->chans[i];
+ if (ch->id == chan)
+ break;
+ }
+ if (i == gpadc->nchans)
+ return NULL;
+
+ return ch;
+}
+
+/**
+ * ab8500_gpadc_ad_to_voltage() - Convert a raw ADC value to a voltage
+ * @gpadc: GPADC instance
+ * @ch: the sampled channel this raw value is coming from
+ * @ad_value: the raw value
+ */
+static int ab8500_gpadc_ad_to_voltage(struct ab8500_gpadc *gpadc,
+ enum ab8500_gpadc_channel ch,
+ int ad_value)
+{
+ int res;
+
+ switch (ch) {
+ case AB8500_GPADC_CHAN_MAIN_CHARGER:
+ /* No calibration data available: just interpolate */
+ if (!gpadc->cal_data[AB8500_CAL_VMAIN].gain) {
+ res = AB8500_ADC_CH_CHG_V_MIN + (AB8500_ADC_CH_CHG_V_MAX -
+ AB8500_ADC_CH_CHG_V_MIN) * ad_value /
+ AB8500_ADC_RESOLUTION;
+ break;
+ }
+ /* Here we can use calibration */
+ res = (int) (ad_value * gpadc->cal_data[AB8500_CAL_VMAIN].gain +
+ gpadc->cal_data[AB8500_CAL_VMAIN].offset) / AB8500_GPADC_CALIB_SCALE;
+ break;
+
+ case AB8500_GPADC_CHAN_BAT_CTRL:
+ case AB8500_GPADC_CHAN_BAT_TEMP:
+ case AB8500_GPADC_CHAN_ACC_DET_1:
+ case AB8500_GPADC_CHAN_ADC_AUX_1:
+ case AB8500_GPADC_CHAN_ADC_AUX_2:
+ case AB8500_GPADC_CHAN_XTAL_TEMP:
+ /* No calibration data available: just interpolate */
+ if (!gpadc->cal_data[AB8500_CAL_BTEMP].gain) {
+ res = AB8500_ADC_CH_BTEMP_MIN + (AB8500_ADC_CH_BTEMP_MAX -
+ AB8500_ADC_CH_BTEMP_MIN) * ad_value /
+ AB8500_ADC_RESOLUTION;
+ break;
+ }
+ /* Here we can use calibration */
+ res = (int) (ad_value * gpadc->cal_data[AB8500_CAL_BTEMP].gain +
+ gpadc->cal_data[AB8500_CAL_BTEMP].offset) / AB8500_GPADC_CALIB_SCALE;
+ break;
+
+ case AB8500_GPADC_CHAN_VBAT_A:
+ case AB8500_GPADC_CHAN_VBAT_TRUE_MEAS:
+ /* No calibration data available: just interpolate */
+ if (!gpadc->cal_data[AB8500_CAL_VBAT].gain) {
+ res = AB8500_ADC_CH_VBAT_MIN + (AB8500_ADC_CH_VBAT_MAX -
+ AB8500_ADC_CH_VBAT_MIN) * ad_value /
+ AB8500_ADC_RESOLUTION;
+ break;
+ }
+ /* Here we can use calibration */
+ res = (int) (ad_value * gpadc->cal_data[AB8500_CAL_VBAT].gain +
+ gpadc->cal_data[AB8500_CAL_VBAT].offset) / AB8500_GPADC_CALIB_SCALE;
+ break;
+
+ case AB8505_GPADC_CHAN_DIE_TEMP:
+ res = AB8500_ADC_CH_DIETEMP_MIN +
+ (AB8500_ADC_CH_DIETEMP_MAX - AB8500_ADC_CH_DIETEMP_MIN) * ad_value /
+ AB8500_ADC_RESOLUTION;
+ break;
+
+ case AB8500_GPADC_CHAN_ACC_DET_2:
+ res = AB8500_ADC_CH_ACCDET2_MIN +
+ (AB8500_ADC_CH_ACCDET2_MAX - AB8500_ADC_CH_ACCDET2_MIN) * ad_value /
+ AB8500_ADC_RESOLUTION;
+ break;
+
+ case AB8500_GPADC_CHAN_VBUS:
+ res = AB8500_ADC_CH_CHG_V_MIN +
+ (AB8500_ADC_CH_CHG_V_MAX - AB8500_ADC_CH_CHG_V_MIN) * ad_value /
+ AB8500_ADC_RESOLUTION;
+ break;
+
+ case AB8500_GPADC_CHAN_MAIN_CHARGER_CURRENT:
+ case AB8500_GPADC_CHAN_USB_CHARGER_CURRENT:
+ res = AB8500_ADC_CH_CHG_I_MIN +
+ (AB8500_ADC_CH_CHG_I_MAX - AB8500_ADC_CH_CHG_I_MIN) * ad_value /
+ AB8500_ADC_RESOLUTION;
+ break;
+
+ case AB8500_GPADC_CHAN_BACKUP_BAT:
+ res = AB8500_ADC_CH_BKBAT_MIN +
+ (AB8500_ADC_CH_BKBAT_MAX - AB8500_ADC_CH_BKBAT_MIN) * ad_value /
+ AB8500_ADC_RESOLUTION;
+ break;
+
+ case AB8500_GPADC_CHAN_IBAT_VIRTUAL:
+ /* No calibration data available: just interpolate */
+ if (!gpadc->cal_data[AB8500_CAL_IBAT].gain) {
+ res = AB8500_ADC_CH_IBAT_MIN + (AB8500_ADC_CH_IBAT_MAX -
+ AB8500_ADC_CH_IBAT_MIN) * ad_value /
+ AB8500_ADC_RESOLUTION;
+ break;
+ }
+ /* Here we can use calibration */
+ res = (int) (ad_value * gpadc->cal_data[AB8500_CAL_IBAT].gain +
+ gpadc->cal_data[AB8500_CAL_IBAT].offset)
+ >> AB8500_GPADC_CALIB_SHIFT_IBAT;
+ break;
+
+ default:
+ dev_err(gpadc->dev,
+ "unknown channel ID: %d, not possible to convert\n",
+ ch);
+ res = -EINVAL;
+ break;
+
+ }
+
+ return res;
+}
+
+static int ab8500_gpadc_read(struct ab8500_gpadc *gpadc,
+ const struct ab8500_gpadc_chan_info *ch,
+ int *ibat)
+{
+ int ret;
+ int looplimit = 0;
+ unsigned long completion_timeout;
+ u8 val;
+ u8 low_data, high_data, low_data2, high_data2;
+ u8 ctrl1;
+ u8 ctrl23;
+ unsigned int delay_min = 0;
+ unsigned int delay_max = 0;
+ u8 data_low_addr, data_high_addr;
+
+ if (!gpadc)
+ return -ENODEV;
+
+ /* check if conversion is supported */
+ if ((gpadc->irq_sw <= 0) && !ch->hardware_control)
+ return -ENOTSUPP;
+ if ((gpadc->irq_hw <= 0) && ch->hardware_control)
+ return -ENOTSUPP;
+
+ /* Enable vddadc by grabbing PM runtime */
+ pm_runtime_get_sync(gpadc->dev);
+
+ /* Check if ADC is not busy, lock and proceed */
+ do {
+ ret = abx500_get_register_interruptible(gpadc->dev,
+ AB8500_GPADC, AB8500_GPADC_STAT_REG, &val);
+ if (ret < 0)
+ goto out;
+ if (!(val & AB8500_GPADC_STAT_BUSY))
+ break;
+ msleep(20);
+ } while (++looplimit < 10);
+ if (looplimit >= 10 && (val & AB8500_GPADC_STAT_BUSY)) {
+ dev_err(gpadc->dev, "gpadc_conversion: GPADC busy");
+ ret = -EINVAL;
+ goto out;
+ }
+
+ /* Enable GPADC */
+ ctrl1 = AB8500_GPADC_CTRL1_ENABLE;
+
+ /* Select the channel source and set average samples */
+ switch (ch->avg_sample) {
+ case 1:
+ ctrl23 = ch->id | AB8500_GPADC_CTRL2_AVG_1;
+ break;
+ case 4:
+ ctrl23 = ch->id | AB8500_GPADC_CTRL2_AVG_4;
+ break;
+ case 8:
+ ctrl23 = ch->id | AB8500_GPADC_CTRL2_AVG_8;
+ break;
+ default:
+ ctrl23 = ch->id | AB8500_GPADC_CTRL2_AVG_16;
+ break;
+ }
+
+ if (ch->hardware_control) {
+ ret = abx500_set_register_interruptible(gpadc->dev,
+ AB8500_GPADC, AB8500_GPADC_CTRL3_REG, ctrl23);
+ ctrl1 |= AB8500_GPADC_CTRL1_TRIG_ENA;
+ if (ch->falling_edge)
+ ctrl1 |= AB8500_GPADC_CTRL1_TRIG_EDGE;
+ } else {
+ ret = abx500_set_register_interruptible(gpadc->dev,
+ AB8500_GPADC, AB8500_GPADC_CTRL2_REG, ctrl23);
+ }
+ if (ret < 0) {
+ dev_err(gpadc->dev,
+ "gpadc_conversion: set avg samples failed\n");
+ goto out;
+ }
+
+ /*
+ * Enable ADC, buffering, select rising edge and enable ADC path
+ * charging current sense if it needed, ABB 3.0 needs some special
+ * treatment too.
+ */
+ switch (ch->id) {
+ case AB8500_GPADC_CHAN_MAIN_CHARGER_CURRENT:
+ case AB8500_GPADC_CHAN_USB_CHARGER_CURRENT:
+ ctrl1 |= AB8500_GPADC_CTRL1_BUF_ENA |
+ AB8500_GPADC_CTRL1_ICHAR_ENA;
+ break;
+ case AB8500_GPADC_CHAN_BAT_TEMP:
+ if (!is_ab8500_2p0_or_earlier(gpadc->ab8500)) {
+ ctrl1 |= AB8500_GPADC_CTRL1_BUF_ENA |
+ AB8500_GPADC_CTRL1_BTEMP_PULL_UP;
+ /*
+ * Delay might be needed for ABB8500 cut 3.0, if not,
+ * remove when hardware will be available
+ */
+ delay_min = 1000; /* Delay in micro seconds */
+ delay_max = 10000; /* large range optimises sleepmode */
+ break;
+ }
+ /* Fall through */
+ default:
+ ctrl1 |= AB8500_GPADC_CTRL1_BUF_ENA;
+ break;
+ }
+
+ /* Write configuration to control register 1 */
+ ret = abx500_set_register_interruptible(gpadc->dev,
+ AB8500_GPADC, AB8500_GPADC_CTRL1_REG, ctrl1);
+ if (ret < 0) {
+ dev_err(gpadc->dev,
+ "gpadc_conversion: set Control register failed\n");
+ goto out;
+ }
+
+ if (delay_min != 0)
+ usleep_range(delay_min, delay_max);
+
+ if (ch->hardware_control) {
+ /* Set trigger delay timer */
+ ret = abx500_set_register_interruptible(gpadc->dev,
+ AB8500_GPADC, AB8500_GPADC_AUTO_TIMER_REG,
+ ch->trig_timer);
+ if (ret < 0) {
+ dev_err(gpadc->dev,
+ "gpadc_conversion: trig timer failed\n");
+ goto out;
+ }
+ completion_timeout = 2 * HZ;
+ data_low_addr = AB8500_GPADC_AUTODATAL_REG;
+ data_high_addr = AB8500_GPADC_AUTODATAH_REG;
+ } else {
+ /* Start SW conversion */
+ ret = abx500_mask_and_set_register_interruptible(gpadc->dev,
+ AB8500_GPADC, AB8500_GPADC_CTRL1_REG,
+ AB8500_GPADC_CTRL1_START_SW_CONV,
+ AB8500_GPADC_CTRL1_START_SW_CONV);
+ if (ret < 0) {
+ dev_err(gpadc->dev,
+ "gpadc_conversion: start s/w conv failed\n");
+ goto out;
+ }
+ completion_timeout = msecs_to_jiffies(AB8500_GPADC_CONVERSION_TIME);
+ data_low_addr = AB8500_GPADC_MANDATAL_REG;
+ data_high_addr = AB8500_GPADC_MANDATAH_REG;
+ }
+
+ /* Wait for completion of conversion */
+ if (!wait_for_completion_timeout(&gpadc->complete,
+ completion_timeout)) {
+ dev_err(gpadc->dev,
+ "timeout didn't receive GPADC conv interrupt\n");
+ ret = -EINVAL;
+ goto out;
+ }
+
+ /* Read the converted RAW data */
+ ret = abx500_get_register_interruptible(gpadc->dev,
+ AB8500_GPADC, data_low_addr, &low_data);
+ if (ret < 0) {
+ dev_err(gpadc->dev,
+ "gpadc_conversion: read low data failed\n");
+ goto out;
+ }
+
+ ret = abx500_get_register_interruptible(gpadc->dev,
+ AB8500_GPADC, data_high_addr, &high_data);
+ if (ret < 0) {
+ dev_err(gpadc->dev,
+ "gpadc_conversion: read high data failed\n");
+ goto out;
+ }
+
+ /* Check if double conversion is required */
+ if ((ch->id == AB8500_GPADC_CHAN_BAT_CTRL_AND_IBAT) ||
+ (ch->id == AB8500_GPADC_CHAN_VBAT_MEAS_AND_IBAT) ||
+ (ch->id == AB8500_GPADC_CHAN_VBAT_TRUE_MEAS_AND_IBAT) ||
+ (ch->id == AB8500_GPADC_CHAN_BAT_TEMP_AND_IBAT)) {
+
+ if (ch->hardware_control) {
+ /* not supported */
+ ret = -ENOTSUPP;
+ dev_err(gpadc->dev,
+ "gpadc_conversion: only SW double conversion supported\n");
+ goto out;
+ } else {
+ /* Read the converted RAW data 2 */
+ ret = abx500_get_register_interruptible(gpadc->dev,
+ AB8500_GPADC, AB8540_GPADC_MANDATA2L_REG,
+ &low_data2);
+ if (ret < 0) {
+ dev_err(gpadc->dev,
+ "gpadc_conversion: read sw low data 2 failed\n");
+ goto out;
+ }
+
+ ret = abx500_get_register_interruptible(gpadc->dev,
+ AB8500_GPADC, AB8540_GPADC_MANDATA2H_REG,
+ &high_data2);
+ if (ret < 0) {
+ dev_err(gpadc->dev,
+ "gpadc_conversion: read sw high data 2 failed\n");
+ goto out;
+ }
+ if (ibat != NULL) {
+ *ibat = (high_data2 << 8) | low_data2;
+ } else {
+ dev_warn(gpadc->dev,
+ "gpadc_conversion: ibat not stored\n");
+ }
+
+ }
+ }
+
+ /* Disable GPADC */
+ ret = abx500_set_register_interruptible(gpadc->dev, AB8500_GPADC,
+ AB8500_GPADC_CTRL1_REG, AB8500_GPADC_CTRL1_DISABLE);
+ if (ret < 0) {
+ dev_err(gpadc->dev, "gpadc_conversion: disable gpadc failed\n");
+ goto out;
+ }
+
+ /* This eventually drops the regulator */
+ pm_runtime_mark_last_busy(gpadc->dev);
+ pm_runtime_put_autosuspend(gpadc->dev);
+
+ return (high_data << 8) | low_data;
+
+out:
+ /*
+ * It has shown to be needed to turn off the GPADC if an error occurs,
+ * otherwise we might have problem when waiting for the busy bit in the
+ * GPADC status register to go low. In V1.1 there wait_for_completion
+ * seems to timeout when waiting for an interrupt.. Not seen in V2.0
+ */
+ (void) abx500_set_register_interruptible(gpadc->dev, AB8500_GPADC,
+ AB8500_GPADC_CTRL1_REG, AB8500_GPADC_CTRL1_DISABLE);
+ pm_runtime_put(gpadc->dev);
+ dev_err(gpadc->dev,
+ "gpadc_conversion: Failed to AD convert channel %d\n", ch->id);
+
+ return ret;
+}
+
+/**
+ * ab8500_bm_gpadcconvend_handler() - isr for gpadc conversion completion
+ * @irq: irq number
+ * @data: pointer to the data passed during request irq
+ *
+ * This is a interrupt service routine for gpadc conversion completion.
+ * Notifies the gpadc completion is completed and the converted raw value
+ * can be read from the registers.
+ * Returns IRQ status(IRQ_HANDLED)
+ */
+static irqreturn_t ab8500_bm_gpadcconvend_handler(int irq, void *data)
+{
+ struct ab8500_gpadc *gpadc = data;
+
+ complete(&gpadc->complete);
+
+ return IRQ_HANDLED;
+}
+
+static int otp_cal_regs[] = {
+ AB8500_GPADC_CAL_1,
+ AB8500_GPADC_CAL_2,
+ AB8500_GPADC_CAL_3,
+ AB8500_GPADC_CAL_4,
+ AB8500_GPADC_CAL_5,
+ AB8500_GPADC_CAL_6,
+ AB8500_GPADC_CAL_7,
+};
+
+static int otp4_cal_regs[] = {
+ AB8540_GPADC_OTP4_REG_7,
+ AB8540_GPADC_OTP4_REG_6,
+ AB8540_GPADC_OTP4_REG_5,
+};
+
+static void ab8500_gpadc_read_calibration_data(struct ab8500_gpadc *gpadc)
+{
+ int i;
+ int ret[ARRAY_SIZE(otp_cal_regs)];
+ u8 gpadc_cal[ARRAY_SIZE(otp_cal_regs)];
+ int ret_otp4[ARRAY_SIZE(otp4_cal_regs)];
+ u8 gpadc_otp4[ARRAY_SIZE(otp4_cal_regs)];
+ int vmain_high, vmain_low;
+ int btemp_high, btemp_low;
+ int vbat_high, vbat_low;
+ int ibat_high, ibat_low;
+ s64 V_gain, V_offset, V2A_gain, V2A_offset;
+
+ /* First we read all OTP registers and store the error code */
+ for (i = 0; i < ARRAY_SIZE(otp_cal_regs); i++) {
+ ret[i] = abx500_get_register_interruptible(gpadc->dev,
+ AB8500_OTP_EMUL, otp_cal_regs[i], &gpadc_cal[i]);
+ if (ret[i] < 0) {
+ /* Continue anyway: maybe the other registers are OK */
+ dev_err(gpadc->dev, "%s: read otp reg 0x%02x failed\n",
+ __func__, otp_cal_regs[i]);
+ } else {
+ /* Put this in the entropy pool as device-unique */
+ add_device_randomness(&ret[i], sizeof(ret[i]));
+ }
+ }
+
+ /*
+ * The ADC calibration data is stored in OTP registers.
+ * The layout of the calibration data is outlined below and a more
+ * detailed description can be found in UM0836
+ *
+ * vm_h/l = vmain_high/low
+ * bt_h/l = btemp_high/low
+ * vb_h/l = vbat_high/low
+ *
+ * Data bits 8500/9540:
+ * | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0
+ * |.......|.......|.......|.......|.......|.......|.......|.......
+ * | | vm_h9 | vm_h8
+ * |.......|.......|.......|.......|.......|.......|.......|.......
+ * | | vm_h7 | vm_h6 | vm_h5 | vm_h4 | vm_h3 | vm_h2
+ * |.......|.......|.......|.......|.......|.......|.......|.......
+ * | vm_h1 | vm_h0 | vm_l4 | vm_l3 | vm_l2 | vm_l1 | vm_l0 | bt_h9
+ * |.......|.......|.......|.......|.......|.......|.......|.......
+ * | bt_h8 | bt_h7 | bt_h6 | bt_h5 | bt_h4 | bt_h3 | bt_h2 | bt_h1
+ * |.......|.......|.......|.......|.......|.......|.......|.......
+ * | bt_h0 | bt_l4 | bt_l3 | bt_l2 | bt_l1 | bt_l0 | vb_h9 | vb_h8
+ * |.......|.......|.......|.......|.......|.......|.......|.......
+ * | vb_h7 | vb_h6 | vb_h5 | vb_h4 | vb_h3 | vb_h2 | vb_h1 | vb_h0
+ * |.......|.......|.......|.......|.......|.......|.......|.......
+ * | vb_l5 | vb_l4 | vb_l3 | vb_l2 | vb_l1 | vb_l0 |
+ * |.......|.......|.......|.......|.......|.......|.......|.......
+ *
+ * Data bits 8540:
+ * OTP2
+ * | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0
+ * |.......|.......|.......|.......|.......|.......|.......|.......
+ * |
+ * |.......|.......|.......|.......|.......|.......|.......|.......
+ * | vm_h9 | vm_h8 | vm_h7 | vm_h6 | vm_h5 | vm_h4 | vm_h3 | vm_h2
+ * |.......|.......|.......|.......|.......|.......|.......|.......
+ * | vm_h1 | vm_h0 | vm_l4 | vm_l3 | vm_l2 | vm_l1 | vm_l0 | bt_h9
+ * |.......|.......|.......|.......|.......|.......|.......|.......
+ * | bt_h8 | bt_h7 | bt_h6 | bt_h5 | bt_h4 | bt_h3 | bt_h2 | bt_h1
+ * |.......|.......|.......|.......|.......|.......|.......|.......
+ * | bt_h0 | bt_l4 | bt_l3 | bt_l2 | bt_l1 | bt_l0 | vb_h9 | vb_h8
+ * |.......|.......|.......|.......|.......|.......|.......|.......
+ * | vb_h7 | vb_h6 | vb_h5 | vb_h4 | vb_h3 | vb_h2 | vb_h1 | vb_h0
+ * |.......|.......|.......|.......|.......|.......|.......|.......
+ * | vb_l5 | vb_l4 | vb_l3 | vb_l2 | vb_l1 | vb_l0 |
+ * |.......|.......|.......|.......|.......|.......|.......|.......
+ *
+ * Data bits 8540:
+ * OTP4
+ * | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0
+ * |.......|.......|.......|.......|.......|.......|.......|.......
+ * | | ib_h9 | ib_h8 | ib_h7
+ * |.......|.......|.......|.......|.......|.......|.......|.......
+ * | ib_h6 | ib_h5 | ib_h4 | ib_h3 | ib_h2 | ib_h1 | ib_h0 | ib_l5
+ * |.......|.......|.......|.......|.......|.......|.......|.......
+ * | ib_l4 | ib_l3 | ib_l2 | ib_l1 | ib_l0 |
+ *
+ *
+ * Ideal output ADC codes corresponding to injected input voltages
+ * during manufacturing is:
+ *
+ * vmain_high: Vin = 19500mV / ADC ideal code = 997
+ * vmain_low: Vin = 315mV / ADC ideal code = 16
+ * btemp_high: Vin = 1300mV / ADC ideal code = 985
+ * btemp_low: Vin = 21mV / ADC ideal code = 16
+ * vbat_high: Vin = 4700mV / ADC ideal code = 982
+ * vbat_low: Vin = 2380mV / ADC ideal code = 33
+ */
+
+ if (is_ab8540(gpadc->ab8500)) {
+ /* Calculate gain and offset for VMAIN if all reads succeeded*/
+ if (!(ret[1] < 0 || ret[2] < 0)) {
+ vmain_high = (((gpadc_cal[1] & 0xFF) << 2) |
+ ((gpadc_cal[2] & 0xC0) >> 6));
+ vmain_low = ((gpadc_cal[2] & 0x3E) >> 1);
+
+ gpadc->cal_data[AB8500_CAL_VMAIN].otp_calib_hi =
+ (u16)vmain_high;
+ gpadc->cal_data[AB8500_CAL_VMAIN].otp_calib_lo =
+ (u16)vmain_low;
+
+ gpadc->cal_data[AB8500_CAL_VMAIN].gain = AB8500_GPADC_CALIB_SCALE *
+ (19500 - 315) / (vmain_high - vmain_low);
+ gpadc->cal_data[AB8500_CAL_VMAIN].offset = AB8500_GPADC_CALIB_SCALE *
+ 19500 - (AB8500_GPADC_CALIB_SCALE * (19500 - 315) /
+ (vmain_high - vmain_low)) * vmain_high;
+ } else {
+ gpadc->cal_data[AB8500_CAL_VMAIN].gain = 0;
+ }
+
+ /* Read IBAT calibration Data */
+ for (i = 0; i < ARRAY_SIZE(otp4_cal_regs); i++) {
+ ret_otp4[i] = abx500_get_register_interruptible(
+ gpadc->dev, AB8500_OTP_EMUL,
+ otp4_cal_regs[i], &gpadc_otp4[i]);
+ if (ret_otp4[i] < 0)
+ dev_err(gpadc->dev,
+ "%s: read otp4 reg 0x%02x failed\n",
+ __func__, otp4_cal_regs[i]);
+ }
+
+ /* Calculate gain and offset for IBAT if all reads succeeded */
+ if (!(ret_otp4[0] < 0 || ret_otp4[1] < 0 || ret_otp4[2] < 0)) {
+ ibat_high = (((gpadc_otp4[0] & 0x07) << 7) |
+ ((gpadc_otp4[1] & 0xFE) >> 1));
+ ibat_low = (((gpadc_otp4[1] & 0x01) << 5) |
+ ((gpadc_otp4[2] & 0xF8) >> 3));
+
+ gpadc->cal_data[AB8500_CAL_IBAT].otp_calib_hi =
+ (u16)ibat_high;
+ gpadc->cal_data[AB8500_CAL_IBAT].otp_calib_lo =
+ (u16)ibat_low;
+
+ V_gain = ((AB8500_GPADC_IBAT_VDROP_H - AB8500_GPADC_IBAT_VDROP_L)
+ << AB8500_GPADC_CALIB_SHIFT_IBAT) / (ibat_high - ibat_low);
+
+ V_offset = (AB8500_GPADC_IBAT_VDROP_H << AB8500_GPADC_CALIB_SHIFT_IBAT) -
+ (((AB8500_GPADC_IBAT_VDROP_H - AB8500_GPADC_IBAT_VDROP_L) <<
+ AB8500_GPADC_CALIB_SHIFT_IBAT) / (ibat_high - ibat_low))
+ * ibat_high;
+ /*
+ * Result obtained is in mV (at a scale factor),
+ * we need to calculate gain and offset to get mA
+ */
+ V2A_gain = (AB8500_ADC_CH_IBAT_MAX - AB8500_ADC_CH_IBAT_MIN)/
+ (AB8500_ADC_CH_IBAT_MAX_V - AB8500_ADC_CH_IBAT_MIN_V);
+ V2A_offset = ((AB8500_ADC_CH_IBAT_MAX_V * AB8500_ADC_CH_IBAT_MIN -
+ AB8500_ADC_CH_IBAT_MAX * AB8500_ADC_CH_IBAT_MIN_V)
+ << AB8500_GPADC_CALIB_SHIFT_IBAT)
+ / (AB8500_ADC_CH_IBAT_MAX_V - AB8500_ADC_CH_IBAT_MIN_V);
+
+ gpadc->cal_data[AB8500_CAL_IBAT].gain =
+ V_gain * V2A_gain;
+ gpadc->cal_data[AB8500_CAL_IBAT].offset =
+ V_offset * V2A_gain + V2A_offset;
+ } else {
+ gpadc->cal_data[AB8500_CAL_IBAT].gain = 0;
+ }
+ } else {
+ /* Calculate gain and offset for VMAIN if all reads succeeded */
+ if (!(ret[0] < 0 || ret[1] < 0 || ret[2] < 0)) {
+ vmain_high = (((gpadc_cal[0] & 0x03) << 8) |
+ ((gpadc_cal[1] & 0x3F) << 2) |
+ ((gpadc_cal[2] & 0xC0) >> 6));
+ vmain_low = ((gpadc_cal[2] & 0x3E) >> 1);
+
+ gpadc->cal_data[AB8500_CAL_VMAIN].otp_calib_hi =
+ (u16)vmain_high;
+ gpadc->cal_data[AB8500_CAL_VMAIN].otp_calib_lo =
+ (u16)vmain_low;
+
+ gpadc->cal_data[AB8500_CAL_VMAIN].gain = AB8500_GPADC_CALIB_SCALE *
+ (19500 - 315) / (vmain_high - vmain_low);
+
+ gpadc->cal_data[AB8500_CAL_VMAIN].offset = AB8500_GPADC_CALIB_SCALE *
+ 19500 - (AB8500_GPADC_CALIB_SCALE * (19500 - 315) /
+ (vmain_high - vmain_low)) * vmain_high;
+ } else {
+ gpadc->cal_data[AB8500_CAL_VMAIN].gain = 0;
+ }
+ }
+
+ /* Calculate gain and offset for BTEMP if all reads succeeded */
+ if (!(ret[2] < 0 || ret[3] < 0 || ret[4] < 0)) {
+ btemp_high = (((gpadc_cal[2] & 0x01) << 9) |
+ (gpadc_cal[3] << 1) | ((gpadc_cal[4] & 0x80) >> 7));
+ btemp_low = ((gpadc_cal[4] & 0x7C) >> 2);
+
+ gpadc->cal_data[AB8500_CAL_BTEMP].otp_calib_hi = (u16)btemp_high;
+ gpadc->cal_data[AB8500_CAL_BTEMP].otp_calib_lo = (u16)btemp_low;
+
+ gpadc->cal_data[AB8500_CAL_BTEMP].gain =
+ AB8500_GPADC_CALIB_SCALE * (1300 - 21) / (btemp_high - btemp_low);
+ gpadc->cal_data[AB8500_CAL_BTEMP].offset = AB8500_GPADC_CALIB_SCALE * 1300 -
+ (AB8500_GPADC_CALIB_SCALE * (1300 - 21) / (btemp_high - btemp_low))
+ * btemp_high;
+ } else {
+ gpadc->cal_data[AB8500_CAL_BTEMP].gain = 0;
+ }
+
+ /* Calculate gain and offset for VBAT if all reads succeeded */
+ if (!(ret[4] < 0 || ret[5] < 0 || ret[6] < 0)) {
+ vbat_high = (((gpadc_cal[4] & 0x03) << 8) | gpadc_cal[5]);
+ vbat_low = ((gpadc_cal[6] & 0xFC) >> 2);
+
+ gpadc->cal_data[AB8500_CAL_VBAT].otp_calib_hi = (u16)vbat_high;
+ gpadc->cal_data[AB8500_CAL_VBAT].otp_calib_lo = (u16)vbat_low;
+
+ gpadc->cal_data[AB8500_CAL_VBAT].gain = AB8500_GPADC_CALIB_SCALE *
+ (4700 - 2380) / (vbat_high - vbat_low);
+ gpadc->cal_data[AB8500_CAL_VBAT].offset = AB8500_GPADC_CALIB_SCALE * 4700 -
+ (AB8500_GPADC_CALIB_SCALE * (4700 - 2380) /
+ (vbat_high - vbat_low)) * vbat_high;
+ } else {
+ gpadc->cal_data[AB8500_CAL_VBAT].gain = 0;
+ }
+}
+
+static int ab8500_gpadc_read_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ int *val, int *val2, long mask)
+{
+ struct ab8500_gpadc *gpadc = iio_priv(indio_dev);
+ const struct ab8500_gpadc_chan_info *ch;
+ int raw_val;
+ int processed;
+
+ ch = ab8500_gpadc_get_channel(gpadc, chan->address);
+ if (!ch) {
+ dev_err(gpadc->dev, "no such channel %lu\n",
+ chan->address);
+ return -EINVAL;
+ }
+
+ raw_val = ab8500_gpadc_read(gpadc, ch, NULL);
+ if (raw_val < 0)
+ return raw_val;
+
+ if (mask == IIO_CHAN_INFO_RAW) {
+ *val = raw_val;
+ return IIO_VAL_INT;
+ }
+
+ if (mask == IIO_CHAN_INFO_PROCESSED) {
+ processed = ab8500_gpadc_ad_to_voltage(gpadc, ch->id, raw_val);
+ if (processed < 0)
+ return processed;
+
+ /* Return millivolt or milliamps or millicentigrades */
+ *val = processed * 1000;
+ return IIO_VAL_INT;
+ }
+
+ return -EINVAL;
+}
+
+static int ab8500_gpadc_of_xlate(struct iio_dev *indio_dev,
+ const struct of_phandle_args *iiospec)
+{
+ int i;
+
+ for (i = 0; i < indio_dev->num_channels; i++)
+ if (indio_dev->channels[i].channel == iiospec->args[0])
+ return i;
+
+ return -EINVAL;
+}
+
+static const struct iio_info ab8500_gpadc_info = {
+ .of_xlate = ab8500_gpadc_of_xlate,
+ .read_raw = ab8500_gpadc_read_raw,
+};
+
+#ifdef CONFIG_PM
+static int ab8500_gpadc_runtime_suspend(struct device *dev)
+{
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
+ struct ab8500_gpadc *gpadc = iio_priv(indio_dev);
+
+ regulator_disable(gpadc->vddadc);
+
+ return 0;
+}
+
+static int ab8500_gpadc_runtime_resume(struct device *dev)
+{
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
+ struct ab8500_gpadc *gpadc = iio_priv(indio_dev);
+ int ret;
+
+ ret = regulator_enable(gpadc->vddadc);
+ if (ret)
+ dev_err(dev, "Failed to enable vddadc: %d\n", ret);
+
+ return ret;
+}
+#endif
+
+/**
+ * ab8500_gpadc_parse_channel() - process devicetree channel configuration
+ * @dev: pointer to containing device
+ * @np: device tree node for the channel to configure
+ * @ch: channel info to fill in
+ * @iio_chan: IIO channel specification to fill in
+ *
+ * The devicetree will set up the channel for use with the specific device,
+ * and define usage for things like AUX GPADC inputs more precisely.
+ */
+static int ab8500_gpadc_parse_channel(struct device *dev,
+ struct device_node *np,
+ struct ab8500_gpadc_chan_info *ch,
+ struct iio_chan_spec *iio_chan)
+{
+ const char *name = np->name;
+ u32 chan;
+ int ret;
+
+ ret = of_property_read_u32(np, "reg", &chan);
+ if (ret) {
+ dev_err(dev, "invalid channel number %s\n", name);
+ return ret;
+ }
+ if (chan > AB8500_GPADC_CHAN_BAT_TEMP_AND_IBAT) {
+ dev_err(dev, "%s channel number out of range %d\n", name, chan);
+ return -EINVAL;
+ }
+
+ iio_chan->channel = chan;
+ iio_chan->datasheet_name = name;
+ iio_chan->indexed = 1;
+ iio_chan->address = chan;
+ iio_chan->info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+ BIT(IIO_CHAN_INFO_PROCESSED);
+ /* Most are voltages (also temperatures), some are currents */
+ if ((chan == AB8500_GPADC_CHAN_MAIN_CHARGER_CURRENT) ||
+ (chan == AB8500_GPADC_CHAN_USB_CHARGER_CURRENT))
+ iio_chan->type = IIO_CURRENT;
+ else
+ iio_chan->type = IIO_VOLTAGE;
+
+ ch->id = chan;
+
+ /* Sensible defaults */
+ ch->avg_sample = 16;
+ ch->hardware_control = false;
+ ch->falling_edge = false;
+ ch->trig_timer = 0;
+
+ return 0;
+}
+
+/**
+ * ab8500_gpadc_parse_channels() - Parse the GPADC channels from DT
+ * @gpadc: the GPADC to configure the channels for
+ * @np: device tree node containing the channel configurations
+ * @chans: the IIO channels we parsed
+ * @nchans: the number of IIO channels we parsed
+ */
+static int ab8500_gpadc_parse_channels(struct ab8500_gpadc *gpadc,
+ struct device_node *np,
+ struct iio_chan_spec **chans_parsed,
+ unsigned int *nchans_parsed)
+{
+ struct device_node *child;
+ struct ab8500_gpadc_chan_info *ch;
+ struct iio_chan_spec *iio_chans;
+ unsigned int nchans;
+ int i;
+
+ nchans = of_get_available_child_count(np);
+ if (!nchans) {
+ dev_err(gpadc->dev, "no channel children\n");
+ return -ENODEV;
+ }
+ dev_info(gpadc->dev, "found %d ADC channels\n", nchans);
+
+ iio_chans = devm_kcalloc(gpadc->dev, nchans,
+ sizeof(*iio_chans), GFP_KERNEL);
+ if (!iio_chans)
+ return -ENOMEM;
+
+ gpadc->chans = devm_kcalloc(gpadc->dev, nchans,
+ sizeof(*gpadc->chans), GFP_KERNEL);
+ if (!gpadc->chans)
+ return -ENOMEM;
+
+ i = 0;
+ for_each_available_child_of_node(np, child) {
+ struct iio_chan_spec *iio_chan;
+ int ret;
+
+ ch = &gpadc->chans[i];
+ iio_chan = &iio_chans[i];
+
+ ret = ab8500_gpadc_parse_channel(gpadc->dev, child, ch,
+ iio_chan);
+ if (ret) {
+ of_node_put(child);
+ return ret;
+ }
+ i++;
+ }
+ gpadc->nchans = nchans;
+ *chans_parsed = iio_chans;
+ *nchans_parsed = nchans;
+
+ return 0;
+}
+
+static int ab8500_gpadc_probe(struct platform_device *pdev)
+{
+ struct ab8500_gpadc *gpadc;
+ struct iio_dev *indio_dev;
+ struct device *dev = &pdev->dev;
+ struct device_node *np = pdev->dev.of_node;
+ struct iio_chan_spec *iio_chans;
+ unsigned int n_iio_chans;
+ int ret;
+
+ indio_dev = devm_iio_device_alloc(dev, sizeof(*gpadc));
+ if (!indio_dev)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, indio_dev);
+ gpadc = iio_priv(indio_dev);
+
+ gpadc->dev = dev;
+ gpadc->ab8500 = dev_get_drvdata(dev->parent);
+
+ ret = ab8500_gpadc_parse_channels(gpadc, np, &iio_chans, &n_iio_chans);
+ if (ret)
+ return ret;
+
+ gpadc->irq_sw = platform_get_irq_byname(pdev, "SW_CONV_END");
+ if (gpadc->irq_sw < 0) {
+ dev_err(dev, "failed to get platform sw_conv_end irq\n");
+ return gpadc->irq_sw;
+ }
+
+ gpadc->irq_hw = platform_get_irq_byname(pdev, "HW_CONV_END");
+ if (gpadc->irq_hw < 0) {
+ dev_err(dev, "failed to get platform hw_conv_end irq\n");
+ return gpadc->irq_hw;
+ }
+
+ /* Initialize completion used to notify completion of conversion */
+ init_completion(&gpadc->complete);
+
+ /* Request interrupts */
+ ret = devm_request_threaded_irq(dev, gpadc->irq_sw, NULL,
+ ab8500_bm_gpadcconvend_handler, IRQF_NO_SUSPEND | IRQF_ONESHOT,
+ "ab8500-gpadc-sw", gpadc);
+ if (ret < 0) {
+ dev_err(dev,
+ "failed to request sw conversion irq %d\n",
+ gpadc->irq_sw);
+ return ret;
+ }
+
+ ret = devm_request_threaded_irq(dev, gpadc->irq_hw, NULL,
+ ab8500_bm_gpadcconvend_handler, IRQF_NO_SUSPEND | IRQF_ONESHOT,
+ "ab8500-gpadc-hw", gpadc);
+ if (ret < 0) {
+ dev_err(dev,
+ "Failed to request hw conversion irq: %d\n",
+ gpadc->irq_hw);
+ return ret;
+ }
+
+ /* The VTVout LDO used to power the AB8500 GPADC */
+ gpadc->vddadc = devm_regulator_get(dev, "vddadc");
+ if (IS_ERR(gpadc->vddadc)) {
+ ret = PTR_ERR(gpadc->vddadc);
+ dev_err(dev, "failed to get vddadc\n");
+ return ret;
+ }
+
+ ret = regulator_enable(gpadc->vddadc);
+ if (ret) {
+ dev_err(dev, "failed to enable vddadc: %d\n", ret);
+ return ret;
+ }
+
+ /* Enable runtime PM */
+ pm_runtime_get_noresume(dev);
+ pm_runtime_set_active(dev);
+ pm_runtime_enable(dev);
+ pm_runtime_set_autosuspend_delay(dev, AB8500_GPADC_AUTOSUSPEND_DELAY);
+ pm_runtime_use_autosuspend(dev);
+
+ ab8500_gpadc_read_calibration_data(gpadc);
+
+ pm_runtime_put(dev);
+
+ indio_dev->dev.parent = dev;
+ indio_dev->dev.of_node = np;
+ indio_dev->name = "ab8500-gpadc";
+ indio_dev->modes = INDIO_DIRECT_MODE;
+ indio_dev->info = &ab8500_gpadc_info;
+ indio_dev->channels = iio_chans;
+ indio_dev->num_channels = n_iio_chans;
+
+ ret = devm_iio_device_register(dev, indio_dev);
+ if (ret)
+ goto out_dis_pm;
+
+ return 0;
+
+out_dis_pm:
+ pm_runtime_get_sync(dev);
+ pm_runtime_put_noidle(dev);
+ pm_runtime_disable(dev);
+ regulator_disable(gpadc->vddadc);
+
+ return ret;
+}
+
+static int ab8500_gpadc_remove(struct platform_device *pdev)
+{
+ struct iio_dev *indio_dev = platform_get_drvdata(pdev);
+ struct ab8500_gpadc *gpadc = iio_priv(indio_dev);
+
+ pm_runtime_get_sync(gpadc->dev);
+ pm_runtime_put_noidle(gpadc->dev);
+ pm_runtime_disable(gpadc->dev);
+ regulator_disable(gpadc->vddadc);
+
+ return 0;
+}
+
+static const struct dev_pm_ops ab8500_gpadc_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
+ pm_runtime_force_resume)
+ SET_RUNTIME_PM_OPS(ab8500_gpadc_runtime_suspend,
+ ab8500_gpadc_runtime_resume,
+ NULL)
+};
+
+static struct platform_driver ab8500_gpadc_driver = {
+ .probe = ab8500_gpadc_probe,
+ .remove = ab8500_gpadc_remove,
+ .driver = {
+ .name = "ab8500-gpadc",
+ .pm = &ab8500_gpadc_pm_ops,
+ },
+};
+builtin_platform_driver(ab8500_gpadc_driver);
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index ae24d3ea68ea..420900852166 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -1210,13 +1210,6 @@ config AB8500_DEBUG
Select this option if you want debug information using the debug
filesystem, debugfs.
-config AB8500_GPADC
- bool "ST-Ericsson AB8500 GPADC driver"
- depends on AB8500_CORE && REGULATOR_AB8500
- default y
- help
- AB8500 GPADC driver used to convert Acc and battery/ac/usb voltage
-
config MFD_DB8500_PRCMU
bool "ST-Ericsson DB8500 Power Reset Control Management Unit"
depends on UX500_SOC_DB8500
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index c1067ea46204..aed99f08739f 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -177,7 +177,6 @@ obj-$(CONFIG_ABX500_CORE) += abx500-core.o
obj-$(CONFIG_AB3100_CORE) += ab3100-core.o
obj-$(CONFIG_AB3100_OTP) += ab3100-otp.o
obj-$(CONFIG_AB8500_DEBUG) += ab8500-debugfs.o
-obj-$(CONFIG_AB8500_GPADC) += ab8500-gpadc.o
obj-$(CONFIG_MFD_DB8500_PRCMU) += db8500-prcmu.o
# ab8500-core need to come after db8500-prcmu (which provides the channel)
obj-$(CONFIG_AB8500_CORE) += ab8500-core.o ab8500-sysctrl.o
diff --git a/drivers/mfd/ab8500-debugfs.c b/drivers/mfd/ab8500-debugfs.c
index f4e26b6e5362..1a9a3414d4fa 100644
--- a/drivers/mfd/ab8500-debugfs.c
+++ b/drivers/mfd/ab8500-debugfs.c
@@ -84,7 +84,6 @@
#include <linux/mfd/abx500.h>
#include <linux/mfd/abx500/ab8500.h>
-#include <linux/mfd/abx500/ab8500-gpadc.h>
#ifdef CONFIG_DEBUG_FS
#include <linux/string.h>
@@ -103,11 +102,6 @@ static int num_irqs;
static struct device_attribute **dev_attr;
static char **event_name;
-static u8 avg_sample = SAMPLE_16;
-static u8 trig_edge = RISING_EDGE;
-static u8 conv_type = ADC_SW;
-static u8 trig_timer;
-
/**
* struct ab8500_reg_range
* @first: the first address of the range
@@ -152,7 +146,6 @@ static struct hwreg_cfg hwreg_cfg = {
};
#define AB8500_NAME_STRING "ab8500"
-#define AB8500_ADC_NAME_STRING "gpadc"
#define AB8500_NUM_BANKS AB8500_DEBUG_FIELD_LAST
#define AB8500_REV_REG 0x80
@@ -1646,633 +1639,6 @@ report_write_failure:
DEFINE_SHOW_ATTRIBUTE(ab8500_modem);
-static int ab8500_gpadc_bat_ctrl_show(struct seq_file *s, void *p)
-{
- int bat_ctrl_raw;
- int bat_ctrl_convert;
- struct ab8500_gpadc *gpadc;
-
- gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
- bat_ctrl_raw = ab8500_gpadc_read_raw(gpadc, BAT_CTRL,
- avg_sample, trig_edge, trig_timer, conv_type);
- bat_ctrl_convert = ab8500_gpadc_ad_to_voltage(gpadc,
- BAT_CTRL, bat_ctrl_raw);
-
- seq_printf(s, "%d,0x%X\n", bat_ctrl_convert, bat_ctrl_raw);
-
- return 0;
-}
-
-DEFINE_SHOW_ATTRIBUTE(ab8500_gpadc_bat_ctrl);
-
-static int ab8500_gpadc_btemp_ball_show(struct seq_file *s, void *p)
-{
- int btemp_ball_raw;
- int btemp_ball_convert;
- struct ab8500_gpadc *gpadc;
-
- gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
- btemp_ball_raw = ab8500_gpadc_read_raw(gpadc, BTEMP_BALL,
- avg_sample, trig_edge, trig_timer, conv_type);
- btemp_ball_convert = ab8500_gpadc_ad_to_voltage(gpadc, BTEMP_BALL,
- btemp_ball_raw);
-
- seq_printf(s, "%d,0x%X\n", btemp_ball_convert, btemp_ball_raw);
-
- return 0;
-}
-
-DEFINE_SHOW_ATTRIBUTE(ab8500_gpadc_btemp_ball);
-
-static int ab8500_gpadc_main_charger_v_show(struct seq_file *s, void *p)
-{
- int main_charger_v_raw;
- int main_charger_v_convert;
- struct ab8500_gpadc *gpadc;
-
- gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
- main_charger_v_raw = ab8500_gpadc_read_raw(gpadc, MAIN_CHARGER_V,
- avg_sample, trig_edge, trig_timer, conv_type);
- main_charger_v_convert = ab8500_gpadc_ad_to_voltage(gpadc,
- MAIN_CHARGER_V, main_charger_v_raw);
-
- seq_printf(s, "%d,0x%X\n", main_charger_v_convert, main_charger_v_raw);
-
- return 0;
-}
-
-DEFINE_SHOW_ATTRIBUTE(ab8500_gpadc_main_charger_v);
-
-static int ab8500_gpadc_acc_detect1_show(struct seq_file *s, void *p)
-{
- int acc_detect1_raw;
- int acc_detect1_convert;
- struct ab8500_gpadc *gpadc;
-
- gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
- acc_detect1_raw = ab8500_gpadc_read_raw(gpadc, ACC_DETECT1,
- avg_sample, trig_edge, trig_timer, conv_type);
- acc_detect1_convert = ab8500_gpadc_ad_to_voltage(gpadc, ACC_DETECT1,
- acc_detect1_raw);
-
- seq_printf(s, "%d,0x%X\n", acc_detect1_convert, acc_detect1_raw);
-
- return 0;
-}
-
-DEFINE_SHOW_ATTRIBUTE(ab8500_gpadc_acc_detect1);
-
-static int ab8500_gpadc_acc_detect2_show(struct seq_file *s, void *p)
-{
- int acc_detect2_raw;
- int acc_detect2_convert;
- struct ab8500_gpadc *gpadc;
-
- gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
- acc_detect2_raw = ab8500_gpadc_read_raw(gpadc, ACC_DETECT2,
- avg_sample, trig_edge, trig_timer, conv_type);
- acc_detect2_convert = ab8500_gpadc_ad_to_voltage(gpadc,
- ACC_DETECT2, acc_detect2_raw);
-
- seq_printf(s, "%d,0x%X\n", acc_detect2_convert, acc_detect2_raw);
-
- return 0;
-}
-
-DEFINE_SHOW_ATTRIBUTE(ab8500_gpadc_acc_detect2);
-
-static int ab8500_gpadc_aux1_show(struct seq_file *s, void *p)
-{
- int aux1_raw;
- int aux1_convert;
- struct ab8500_gpadc *gpadc;
-
- gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
- aux1_raw = ab8500_gpadc_read_raw(gpadc, ADC_AUX1,
- avg_sample, trig_edge, trig_timer, conv_type);
- aux1_convert = ab8500_gpadc_ad_to_voltage(gpadc, ADC_AUX1,
- aux1_raw);
-
- seq_printf(s, "%d,0x%X\n", aux1_convert, aux1_raw);
-
- return 0;
-}
-
-DEFINE_SHOW_ATTRIBUTE(ab8500_gpadc_aux1);
-
-static int ab8500_gpadc_aux2_show(struct seq_file *s, void *p)
-{
- int aux2_raw;
- int aux2_convert;
- struct ab8500_gpadc *gpadc;
-
- gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
- aux2_raw = ab8500_gpadc_read_raw(gpadc, ADC_AUX2,
- avg_sample, trig_edge, trig_timer, conv_type);
- aux2_convert = ab8500_gpadc_ad_to_voltage(gpadc, ADC_AUX2,
- aux2_raw);
-
- seq_printf(s, "%d,0x%X\n", aux2_convert, aux2_raw);
-
- return 0;
-}
-
-DEFINE_SHOW_ATTRIBUTE(ab8500_gpadc_aux2);
-
-static int ab8500_gpadc_main_bat_v_show(struct seq_file *s, void *p)
-{
- int main_bat_v_raw;
- int main_bat_v_convert;
- struct ab8500_gpadc *gpadc;
-
- gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
- main_bat_v_raw = ab8500_gpadc_read_raw(gpadc, MAIN_BAT_V,
- avg_sample, trig_edge, trig_timer, conv_type);
- main_bat_v_convert = ab8500_gpadc_ad_to_voltage(gpadc, MAIN_BAT_V,
- main_bat_v_raw);
-
- seq_printf(s, "%d,0x%X\n", main_bat_v_convert, main_bat_v_raw);
-
- return 0;
-}
-
-DEFINE_SHOW_ATTRIBUTE(ab8500_gpadc_main_bat_v);
-
-static int ab8500_gpadc_vbus_v_show(struct seq_file *s, void *p)
-{
- int vbus_v_raw;
- int vbus_v_convert;
- struct ab8500_gpadc *gpadc;
-
- gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
- vbus_v_raw = ab8500_gpadc_read_raw(gpadc, VBUS_V,
- avg_sample, trig_edge, trig_timer, conv_type);
- vbus_v_convert = ab8500_gpadc_ad_to_voltage(gpadc, VBUS_V,
- vbus_v_raw);
-
- seq_printf(s, "%d,0x%X\n", vbus_v_convert, vbus_v_raw);
-
- return 0;
-}
-
-DEFINE_SHOW_ATTRIBUTE(ab8500_gpadc_vbus_v);
-
-static int ab8500_gpadc_main_charger_c_show(struct seq_file *s, void *p)
-{
- int main_charger_c_raw;
- int main_charger_c_convert;
- struct ab8500_gpadc *gpadc;
-
- gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
- main_charger_c_raw = ab8500_gpadc_read_raw(gpadc, MAIN_CHARGER_C,
- avg_sample, trig_edge, trig_timer, conv_type);
- main_charger_c_convert = ab8500_gpadc_ad_to_voltage(gpadc,
- MAIN_CHARGER_C, main_charger_c_raw);
-
- seq_printf(s, "%d,0x%X\n", main_charger_c_convert, main_charger_c_raw);
-
- return 0;
-}
-
-DEFINE_SHOW_ATTRIBUTE(ab8500_gpadc_main_charger_c);
-
-static int ab8500_gpadc_usb_charger_c_show(struct seq_file *s, void *p)
-{
- int usb_charger_c_raw;
- int usb_charger_c_convert;
- struct ab8500_gpadc *gpadc;
-
- gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
- usb_charger_c_raw = ab8500_gpadc_read_raw(gpadc, USB_CHARGER_C,
- avg_sample, trig_edge, trig_timer, conv_type);
- usb_charger_c_convert = ab8500_gpadc_ad_to_voltage(gpadc,
- USB_CHARGER_C, usb_charger_c_raw);
-
- seq_printf(s, "%d,0x%X\n", usb_charger_c_convert, usb_charger_c_raw);
-
- return 0;
-}
-
-DEFINE_SHOW_ATTRIBUTE(ab8500_gpadc_usb_charger_c);
-
-static int ab8500_gpadc_bk_bat_v_show(struct seq_file *s, void *p)
-{
- int bk_bat_v_raw;
- int bk_bat_v_convert;
- struct ab8500_gpadc *gpadc;
-
- gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
- bk_bat_v_raw = ab8500_gpadc_read_raw(gpadc, BK_BAT_V,
- avg_sample, trig_edge, trig_timer, conv_type);
- bk_bat_v_convert = ab8500_gpadc_ad_to_voltage(gpadc,
- BK_BAT_V, bk_bat_v_raw);
-
- seq_printf(s, "%d,0x%X\n", bk_bat_v_convert, bk_bat_v_raw);
-
- return 0;
-}
-
-DEFINE_SHOW_ATTRIBUTE(ab8500_gpadc_bk_bat_v);
-
-static int ab8500_gpadc_die_temp_show(struct seq_file *s, void *p)
-{
- int die_temp_raw;
- int die_temp_convert;
- struct ab8500_gpadc *gpadc;
-
- gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
- die_temp_raw = ab8500_gpadc_read_raw(gpadc, DIE_TEMP,
- avg_sample, trig_edge, trig_timer, conv_type);
- die_temp_convert = ab8500_gpadc_ad_to_voltage(gpadc, DIE_TEMP,
- die_temp_raw);
-
- seq_printf(s, "%d,0x%X\n", die_temp_convert, die_temp_raw);
-
- return 0;
-}
-
-DEFINE_SHOW_ATTRIBUTE(ab8500_gpadc_die_temp);
-
-static int ab8500_gpadc_usb_id_show(struct seq_file *s, void *p)
-{
- int usb_id_raw;
- int usb_id_convert;
- struct ab8500_gpadc *gpadc;
-
- gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
- usb_id_raw = ab8500_gpadc_read_raw(gpadc, USB_ID,
- avg_sample, trig_edge, trig_timer, conv_type);
- usb_id_convert = ab8500_gpadc_ad_to_voltage(gpadc, USB_ID,
- usb_id_raw);
-
- seq_printf(s, "%d,0x%X\n", usb_id_convert, usb_id_raw);
-
- return 0;
-}
-
-DEFINE_SHOW_ATTRIBUTE(ab8500_gpadc_usb_id);
-
-static int ab8540_gpadc_xtal_temp_show(struct seq_file *s, void *p)
-{
- int xtal_temp_raw;
- int xtal_temp_convert;
- struct ab8500_gpadc *gpadc;
-
- gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
- xtal_temp_raw = ab8500_gpadc_read_raw(gpadc, XTAL_TEMP,
- avg_sample, trig_edge, trig_timer, conv_type);
- xtal_temp_convert = ab8500_gpadc_ad_to_voltage(gpadc, XTAL_TEMP,
- xtal_temp_raw);
-
- seq_printf(s, "%d,0x%X\n", xtal_temp_convert, xtal_temp_raw);
-
- return 0;
-}
-
-DEFINE_SHOW_ATTRIBUTE(ab8540_gpadc_xtal_temp);
-
-static int ab8540_gpadc_vbat_true_meas_show(struct seq_file *s, void *p)
-{
- int vbat_true_meas_raw;
- int vbat_true_meas_convert;
- struct ab8500_gpadc *gpadc;
-
- gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
- vbat_true_meas_raw = ab8500_gpadc_read_raw(gpadc, VBAT_TRUE_MEAS,
- avg_sample, trig_edge, trig_timer, conv_type);
- vbat_true_meas_convert =
- ab8500_gpadc_ad_to_voltage(gpadc, VBAT_TRUE_MEAS,
- vbat_true_meas_raw);
-
- seq_printf(s, "%d,0x%X\n", vbat_true_meas_convert, vbat_true_meas_raw);
-
- return 0;
-}
-
-DEFINE_SHOW_ATTRIBUTE(ab8540_gpadc_vbat_true_meas);
-
-static int ab8540_gpadc_bat_ctrl_and_ibat_show(struct seq_file *s, void *p)
-{
- int bat_ctrl_raw;
- int bat_ctrl_convert;
- int ibat_raw;
- int ibat_convert;
- struct ab8500_gpadc *gpadc;
-
- gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
- bat_ctrl_raw = ab8500_gpadc_double_read_raw(gpadc, BAT_CTRL_AND_IBAT,
- avg_sample, trig_edge, trig_timer, conv_type, &ibat_raw);
-
- bat_ctrl_convert = ab8500_gpadc_ad_to_voltage(gpadc, BAT_CTRL,
- bat_ctrl_raw);
- ibat_convert = ab8500_gpadc_ad_to_voltage(gpadc, IBAT_VIRTUAL_CHANNEL,
- ibat_raw);
-
- seq_printf(s,
- "%d,0x%X\n"
- "%d,0x%X\n",
- bat_ctrl_convert, bat_ctrl_raw,
- ibat_convert, ibat_raw);
-
- return 0;
-}
-
-DEFINE_SHOW_ATTRIBUTE(ab8540_gpadc_bat_ctrl_and_ibat);
-
-static int ab8540_gpadc_vbat_meas_and_ibat_show(struct seq_file *s, void *p)
-{
- int vbat_meas_raw;
- int vbat_meas_convert;
- int ibat_raw;
- int ibat_convert;
- struct ab8500_gpadc *gpadc;
-
- gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
- vbat_meas_raw = ab8500_gpadc_double_read_raw(gpadc, VBAT_MEAS_AND_IBAT,
- avg_sample, trig_edge, trig_timer, conv_type, &ibat_raw);
- vbat_meas_convert = ab8500_gpadc_ad_to_voltage(gpadc, MAIN_BAT_V,
- vbat_meas_raw);
- ibat_convert = ab8500_gpadc_ad_to_voltage(gpadc, IBAT_VIRTUAL_CHANNEL,
- ibat_raw);
-
- seq_printf(s,
- "%d,0x%X\n"
- "%d,0x%X\n",
- vbat_meas_convert, vbat_meas_raw,
- ibat_convert, ibat_raw);
-
- return 0;
-}
-
-DEFINE_SHOW_ATTRIBUTE(ab8540_gpadc_vbat_meas_and_ibat);
-
-static int ab8540_gpadc_vbat_true_meas_and_ibat_show(struct seq_file *s, void *p)
-{
- int vbat_true_meas_raw;
- int vbat_true_meas_convert;
- int ibat_raw;
- int ibat_convert;
- struct ab8500_gpadc *gpadc;
-
- gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
- vbat_true_meas_raw = ab8500_gpadc_double_read_raw(gpadc,
- VBAT_TRUE_MEAS_AND_IBAT, avg_sample, trig_edge,
- trig_timer, conv_type, &ibat_raw);
- vbat_true_meas_convert = ab8500_gpadc_ad_to_voltage(gpadc,
- VBAT_TRUE_MEAS, vbat_true_meas_raw);
- ibat_convert = ab8500_gpadc_ad_to_voltage(gpadc, IBAT_VIRTUAL_CHANNEL,
- ibat_raw);
-
- seq_printf(s,
- "%d,0x%X\n"
- "%d,0x%X\n",
- vbat_true_meas_convert, vbat_true_meas_raw,
- ibat_convert, ibat_raw);
-
- return 0;
-}
-
-DEFINE_SHOW_ATTRIBUTE(ab8540_gpadc_vbat_true_meas_and_ibat);
-
-static int ab8540_gpadc_bat_temp_and_ibat_show(struct seq_file *s, void *p)
-{
- int bat_temp_raw;
- int bat_temp_convert;
- int ibat_raw;
- int ibat_convert;
- struct ab8500_gpadc *gpadc;
-
- gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
- bat_temp_raw = ab8500_gpadc_double_read_raw(gpadc, BAT_TEMP_AND_IBAT,
- avg_sample, trig_edge, trig_timer, conv_type, &ibat_raw);
- bat_temp_convert = ab8500_gpadc_ad_to_voltage(gpadc, BTEMP_BALL,
- bat_temp_raw);
- ibat_convert = ab8500_gpadc_ad_to_voltage(gpadc, IBAT_VIRTUAL_CHANNEL,
- ibat_raw);
-
- seq_printf(s,
- "%d,0x%X\n"
- "%d,0x%X\n",
- bat_temp_convert, bat_temp_raw,
- ibat_convert, ibat_raw);
-
- return 0;
-}
-
-DEFINE_SHOW_ATTRIBUTE(ab8540_gpadc_bat_temp_and_ibat);
-
-static int ab8540_gpadc_otp_calib_show(struct seq_file *s, void *p)
-{
- struct ab8500_gpadc *gpadc;
- u16 vmain_l, vmain_h, btemp_l, btemp_h;
- u16 vbat_l, vbat_h, ibat_l, ibat_h;
-
- gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
- ab8540_gpadc_get_otp(gpadc, &vmain_l, &vmain_h, &btemp_l, &btemp_h,
- &vbat_l, &vbat_h, &ibat_l, &ibat_h);
- seq_printf(s,
- "VMAIN_L:0x%X\n"
- "VMAIN_H:0x%X\n"
- "BTEMP_L:0x%X\n"
- "BTEMP_H:0x%X\n"
- "VBAT_L:0x%X\n"
- "VBAT_H:0x%X\n"
- "IBAT_L:0x%X\n"
- "IBAT_H:0x%X\n",
- vmain_l, vmain_h, btemp_l, btemp_h,
- vbat_l, vbat_h, ibat_l, ibat_h);
-
- return 0;
-}
-
-DEFINE_SHOW_ATTRIBUTE(ab8540_gpadc_otp_calib);
-
-static int ab8500_gpadc_avg_sample_print(struct seq_file *s, void *p)
-{
- seq_printf(s, "%d\n", avg_sample);
-
- return 0;
-}
-
-static int ab8500_gpadc_avg_sample_open(struct inode *inode, struct file *file)
-{
- return single_open(file, ab8500_gpadc_avg_sample_print,
- inode->i_private);
-}
-
-static ssize_t ab8500_gpadc_avg_sample_write(struct file *file,
- const char __user *user_buf,
- size_t count, loff_t *ppos)
-{
- struct device *dev = ((struct seq_file *)(file->private_data))->private;
- unsigned long user_avg_sample;
- int err;
-
- err = kstrtoul_from_user(user_buf, count, 0, &user_avg_sample);
- if (err)
- return err;
-
- if ((user_avg_sample == SAMPLE_1) || (user_avg_sample == SAMPLE_4)
- || (user_avg_sample == SAMPLE_8)
- || (user_avg_sample == SAMPLE_16)) {
- avg_sample = (u8) user_avg_sample;
- } else {
- dev_err(dev,
- "debugfs err input: should be egal to 1, 4, 8 or 16\n");
- return -EINVAL;
- }
-
- return count;
-}
-
-static const struct file_operations ab8500_gpadc_avg_sample_fops = {
- .open = ab8500_gpadc_avg_sample_open,
- .read = seq_read,
- .write = ab8500_gpadc_avg_sample_write,
- .llseek = seq_lseek,
- .release = single_release,
- .owner = THIS_MODULE,
-};
-
-static int ab8500_gpadc_trig_edge_print(struct seq_file *s, void *p)
-{
- seq_printf(s, "%d\n", trig_edge);
-
- return 0;
-}
-
-static int ab8500_gpadc_trig_edge_open(struct inode *inode, struct file *file)
-{
- return single_open(file, ab8500_gpadc_trig_edge_print,
- inode->i_private);
-}
-
-static ssize_t ab8500_gpadc_trig_edge_write(struct file *file,
- const char __user *user_buf,
- size_t count, loff_t *ppos)
-{
- struct device *dev = ((struct seq_file *)(file->private_data))->private;
- unsigned long user_trig_edge;
- int err;
-
- err = kstrtoul_from_user(user_buf, count, 0, &user_trig_edge);
- if (err)
- return err;
-
- if ((user_trig_edge == RISING_EDGE)
- || (user_trig_edge == FALLING_EDGE)) {
- trig_edge = (u8) user_trig_edge;
- } else {
- dev_err(dev, "Wrong input:\n"
- "Enter 0. Rising edge\n"
- "Enter 1. Falling edge\n");
- return -EINVAL;
- }
-
- return count;
-}
-
-static const struct file_operations ab8500_gpadc_trig_edge_fops = {
- .open = ab8500_gpadc_trig_edge_open,
- .read = seq_read,
- .write = ab8500_gpadc_trig_edge_write,
- .llseek = seq_lseek,
- .release = single_release,
- .owner = THIS_MODULE,
-};
-
-static int ab8500_gpadc_trig_timer_print(struct seq_file *s, void *p)
-{
- seq_printf(s, "%d\n", trig_timer);
-
- return 0;
-}
-
-static int ab8500_gpadc_trig_timer_open(struct inode *inode, struct file *file)
-{
- return single_open(file, ab8500_gpadc_trig_timer_print,
- inode->i_private);
-}
-
-static ssize_t ab8500_gpadc_trig_timer_write(struct file *file,
- const char __user *user_buf,
- size_t count, loff_t *ppos)
-{
- struct device *dev = ((struct seq_file *)(file->private_data))->private;
- unsigned long user_trig_timer;
- int err;
-
- err = kstrtoul_from_user(user_buf, count, 0, &user_trig_timer);
- if (err)
- return err;
-
- if (user_trig_timer & ~0xFF) {
- dev_err(dev,
- "debugfs error input: should be between 0 to 255\n");
- return -EINVAL;
- }
-
- trig_timer = (u8) user_trig_timer;
-
- return count;
-}
-
-static const struct file_operations ab8500_gpadc_trig_timer_fops = {
- .open = ab8500_gpadc_trig_timer_open,
- .read = seq_read,
- .write = ab8500_gpadc_trig_timer_write,
- .llseek = seq_lseek,
- .release = single_release,
- .owner = THIS_MODULE,
-};
-
-static int ab8500_gpadc_conv_type_print(struct seq_file *s, void *p)
-{
- seq_printf(s, "%d\n", conv_type);
-
- return 0;
-}
-
-static int ab8500_gpadc_conv_type_open(struct inode *inode, struct file *file)
-{
- return single_open(file, ab8500_gpadc_conv_type_print,
- inode->i_private);
-}
-
-static ssize_t ab8500_gpadc_conv_type_write(struct file *file,
- const char __user *user_buf,
- size_t count, loff_t *ppos)
-{
- struct device *dev = ((struct seq_file *)(file->private_data))->private;
- unsigned long user_conv_type;
- int err;
-
- err = kstrtoul_from_user(user_buf, count, 0, &user_conv_type);
- if (err)
- return err;
-
- if ((user_conv_type == ADC_SW)
- || (user_conv_type == ADC_HW)) {
- conv_type = (u8) user_conv_type;
- } else {
- dev_err(dev, "Wrong input:\n"
- "Enter 0. ADC SW conversion\n"
- "Enter 1. ADC HW conversion\n");
- return -EINVAL;
- }
-
- return count;
-}
-
-static const struct file_operations ab8500_gpadc_conv_type_fops = {
- .open = ab8500_gpadc_conv_type_open,
- .read = seq_read,
- .write = ab8500_gpadc_conv_type_write,
- .llseek = seq_lseek,
- .release = single_release,
- .owner = THIS_MODULE,
-};
-
/*
* return length of an ASCII numerical value, 0 is string is not a
* numerical value.
@@ -2647,7 +2013,6 @@ static const struct file_operations ab8500_hwreg_fops = {
static int ab8500_debug_probe(struct platform_device *plf)
{
struct dentry *ab8500_dir;
- struct dentry *ab8500_gpadc_dir;
struct ab8500 *ab8500;
struct resource *res;
@@ -2689,9 +2054,6 @@ static int ab8500_debug_probe(struct platform_device *plf)
ab8500_dir = debugfs_create_dir(AB8500_NAME_STRING, NULL);
- ab8500_gpadc_dir = debugfs_create_dir(AB8500_ADC_NAME_STRING,
- ab8500_dir);
-
debugfs_create_file("all-bank-registers", S_IRUGO, ab8500_dir,
&plf->dev, &ab8500_bank_registers_fops);
debugfs_create_file("all-banks", S_IRUGO, ab8500_dir,
@@ -2727,83 +2089,6 @@ static int ab8500_debug_probe(struct platform_device *plf)
&plf->dev, &ab8500_hwreg_fops);
debugfs_create_file("all-modem-registers", (S_IRUGO | S_IWUSR | S_IWGRP),
ab8500_dir, &plf->dev, &ab8500_modem_fops);
- debugfs_create_file("bat_ctrl", (S_IRUGO | S_IWUSR | S_IWGRP),
- ab8500_gpadc_dir, &plf->dev,
- &ab8500_gpadc_bat_ctrl_fops);
- debugfs_create_file("btemp_ball", (S_IRUGO | S_IWUSR | S_IWGRP),
- ab8500_gpadc_dir, &plf->dev,
- &ab8500_gpadc_btemp_ball_fops);
- debugfs_create_file("main_charger_v", (S_IRUGO | S_IWUSR | S_IWGRP),
- ab8500_gpadc_dir, &plf->dev,
- &ab8500_gpadc_main_charger_v_fops);
- debugfs_create_file("acc_detect1", (S_IRUGO | S_IWUSR | S_IWGRP),
- ab8500_gpadc_dir, &plf->dev,
- &ab8500_gpadc_acc_detect1_fops);
- debugfs_create_file("acc_detect2", (S_IRUGO | S_IWUSR | S_IWGRP),
- ab8500_gpadc_dir, &plf->dev,
- &ab8500_gpadc_acc_detect2_fops);
- debugfs_create_file("adc_aux1", (S_IRUGO | S_IWUSR | S_IWGRP),
- ab8500_gpadc_dir, &plf->dev,
- &ab8500_gpadc_aux1_fops);
- debugfs_create_file("adc_aux2", (S_IRUGO | S_IWUSR | S_IWGRP),
- ab8500_gpadc_dir, &plf->dev,
- &ab8500_gpadc_aux2_fops);
- debugfs_create_file("main_bat_v", (S_IRUGO | S_IWUSR | S_IWGRP),
- ab8500_gpadc_dir, &plf->dev,
- &ab8500_gpadc_main_bat_v_fops);
- debugfs_create_file("vbus_v", (S_IRUGO | S_IWUSR | S_IWGRP),
- ab8500_gpadc_dir, &plf->dev,
- &ab8500_gpadc_vbus_v_fops);
- debugfs_create_file("main_charger_c", (S_IRUGO | S_IWUSR | S_IWGRP),
- ab8500_gpadc_dir, &plf->dev,
- &ab8500_gpadc_main_charger_c_fops);
- debugfs_create_file("usb_charger_c", (S_IRUGO | S_IWUSR | S_IWGRP),
- ab8500_gpadc_dir, &plf->dev,
- &ab8500_gpadc_usb_charger_c_fops);
- debugfs_create_file("bk_bat_v", (S_IRUGO | S_IWUSR | S_IWGRP),
- ab8500_gpadc_dir, &plf->dev,
- &ab8500_gpadc_bk_bat_v_fops);
- debugfs_create_file("die_temp", (S_IRUGO | S_IWUSR | S_IWGRP),
- ab8500_gpadc_dir, &plf->dev,
- &ab8500_gpadc_die_temp_fops);
- debugfs_create_file("usb_id", (S_IRUGO | S_IWUSR | S_IWGRP),
- ab8500_gpadc_dir, &plf->dev,
- &ab8500_gpadc_usb_id_fops);
- if (is_ab8540(ab8500)) {
- debugfs_create_file("xtal_temp", (S_IRUGO | S_IWUSR | S_IWGRP),
- ab8500_gpadc_dir, &plf->dev,
- &ab8540_gpadc_xtal_temp_fops);
- debugfs_create_file("vbattruemeas", (S_IRUGO | S_IWUSR | S_IWGRP),
- ab8500_gpadc_dir, &plf->dev,
- &ab8540_gpadc_vbat_true_meas_fops);
- debugfs_create_file("batctrl_and_ibat", (S_IRUGO | S_IWUGO),
- ab8500_gpadc_dir, &plf->dev,
- &ab8540_gpadc_bat_ctrl_and_ibat_fops);
- debugfs_create_file("vbatmeas_and_ibat", (S_IRUGO | S_IWUGO),
- ab8500_gpadc_dir, &plf->dev,
- &ab8540_gpadc_vbat_meas_and_ibat_fops);
- debugfs_create_file("vbattruemeas_and_ibat", (S_IRUGO | S_IWUGO),
- ab8500_gpadc_dir, &plf->dev,
- &ab8540_gpadc_vbat_true_meas_and_ibat_fops);
- debugfs_create_file("battemp_and_ibat", (S_IRUGO | S_IWUGO),
- ab8500_gpadc_dir, &plf->dev,
- &ab8540_gpadc_bat_temp_and_ibat_fops);
- debugfs_create_file("otp_calib", (S_IRUGO | S_IWUSR | S_IWGRP),
- ab8500_gpadc_dir, &plf->dev,
- &ab8540_gpadc_otp_calib_fops);
- }
- debugfs_create_file("avg_sample", (S_IRUGO | S_IWUSR | S_IWGRP),
- ab8500_gpadc_dir, &plf->dev,
- &ab8500_gpadc_avg_sample_fops);
- debugfs_create_file("trig_edge", (S_IRUGO | S_IWUSR | S_IWGRP),
- ab8500_gpadc_dir, &plf->dev,
- &ab8500_gpadc_trig_edge_fops);
- debugfs_create_file("trig_timer", (S_IRUGO | S_IWUSR | S_IWGRP),
- ab8500_gpadc_dir, &plf->dev,
- &ab8500_gpadc_trig_timer_fops);
- debugfs_create_file("conv_type", (S_IRUGO | S_IWUSR | S_IWGRP),
- ab8500_gpadc_dir, &plf->dev,
- &ab8500_gpadc_conv_type_fops);
return 0;
}
diff --git a/drivers/mfd/ab8500-gpadc.c b/drivers/mfd/ab8500-gpadc.c
deleted file mode 100644
index 005f9ee34cd1..000000000000
--- a/drivers/mfd/ab8500-gpadc.c
+++ /dev/null
@@ -1,1075 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (C) ST-Ericsson SA 2010
- *
- * Author: Arun R Murthy <arun.murthy@stericsson.com>
- * Author: Daniel Willerud <daniel.willerud@stericsson.com>
- * Author: Johan Palsson <johan.palsson@stericsson.com>
- * Author: M'boumba Cedric Madianga
- */
-#include <linux/init.h>
-#include <linux/device.h>
-#include <linux/interrupt.h>
-#include <linux/spinlock.h>
-#include <linux/delay.h>
-#include <linux/pm_runtime.h>
-#include <linux/platform_device.h>
-#include <linux/completion.h>
-#include <linux/regulator/consumer.h>
-#include <linux/err.h>
-#include <linux/slab.h>
-#include <linux/list.h>
-#include <linux/mfd/abx500.h>
-#include <linux/mfd/abx500/ab8500.h>
-#include <linux/mfd/abx500/ab8500-gpadc.h>
-
-/*
- * GPADC register offsets
- * Bank : 0x0A
- */
-#define AB8500_GPADC_CTRL1_REG 0x00
-#define AB8500_GPADC_CTRL2_REG 0x01
-#define AB8500_GPADC_CTRL3_REG 0x02
-#define AB8500_GPADC_AUTO_TIMER_REG 0x03
-#define AB8500_GPADC_STAT_REG 0x04
-#define AB8500_GPADC_MANDATAL_REG 0x05
-#define AB8500_GPADC_MANDATAH_REG 0x06
-#define AB8500_GPADC_AUTODATAL_REG 0x07
-#define AB8500_GPADC_AUTODATAH_REG 0x08
-#define AB8500_GPADC_MUX_CTRL_REG 0x09
-#define AB8540_GPADC_MANDATA2L_REG 0x09
-#define AB8540_GPADC_MANDATA2H_REG 0x0A
-#define AB8540_GPADC_APEAAX_REG 0x10
-#define AB8540_GPADC_APEAAT_REG 0x11
-#define AB8540_GPADC_APEAAM_REG 0x12
-#define AB8540_GPADC_APEAAH_REG 0x13
-#define AB8540_GPADC_APEAAL_REG 0x14
-
-/*
- * OTP register offsets
- * Bank : 0x15
- */
-#define AB8500_GPADC_CAL_1 0x0F
-#define AB8500_GPADC_CAL_2 0x10
-#define AB8500_GPADC_CAL_3 0x11
-#define AB8500_GPADC_CAL_4 0x12
-#define AB8500_GPADC_CAL_5 0x13
-#define AB8500_GPADC_CAL_6 0x14
-#define AB8500_GPADC_CAL_7 0x15
-/* New calibration for 8540 */
-#define AB8540_GPADC_OTP4_REG_7 0x38
-#define AB8540_GPADC_OTP4_REG_6 0x39
-#define AB8540_GPADC_OTP4_REG_5 0x3A
-
-/* gpadc constants */
-#define EN_VINTCORE12 0x04
-#define EN_VTVOUT 0x02
-#define EN_GPADC 0x01
-#define DIS_GPADC 0x00
-#define AVG_1 0x00
-#define AVG_4 0x20
-#define AVG_8 0x40
-#define AVG_16 0x60
-#define ADC_SW_CONV 0x04
-#define EN_ICHAR 0x80
-#define BTEMP_PULL_UP 0x08
-#define EN_BUF 0x40
-#define DIS_ZERO 0x00
-#define GPADC_BUSY 0x01
-#define EN_FALLING 0x10
-#define EN_TRIG_EDGE 0x02
-#define EN_VBIAS_XTAL_TEMP 0x02
-
-/* GPADC constants from AB8500 spec, UM0836 */
-#define ADC_RESOLUTION 1024
-#define ADC_CH_BTEMP_MIN 0
-#define ADC_CH_BTEMP_MAX 1350
-#define ADC_CH_DIETEMP_MIN 0
-#define ADC_CH_DIETEMP_MAX 1350
-#define ADC_CH_CHG_V_MIN 0
-#define ADC_CH_CHG_V_MAX 20030
-#define ADC_CH_ACCDET2_MIN 0
-#define ADC_CH_ACCDET2_MAX 2500
-#define ADC_CH_VBAT_MIN 2300
-#define ADC_CH_VBAT_MAX 4800
-#define ADC_CH_CHG_I_MIN 0
-#define ADC_CH_CHG_I_MAX 1500
-#define ADC_CH_BKBAT_MIN 0
-#define ADC_CH_BKBAT_MAX 3200
-
-/* GPADC constants from AB8540 spec */
-#define ADC_CH_IBAT_MIN (-6000) /* mA range measured by ADC for ibat */
-#define ADC_CH_IBAT_MAX 6000
-#define ADC_CH_IBAT_MIN_V (-60) /* mV range measured by ADC for ibat */
-#define ADC_CH_IBAT_MAX_V 60
-#define IBAT_VDROP_L (-56) /* mV */
-#define IBAT_VDROP_H 56
-
-/* This is used to not lose precision when dividing to get gain and offset */
-#define CALIB_SCALE 1000
-/*
- * Number of bits shift used to not lose precision
- * when dividing to get ibat gain.
- */
-#define CALIB_SHIFT_IBAT 20
-
-/* Time in ms before disabling regulator */
-#define GPADC_AUDOSUSPEND_DELAY 1
-
-#define CONVERSION_TIME 500 /* ms */
-
-enum cal_channels {
- ADC_INPUT_VMAIN = 0,
- ADC_INPUT_BTEMP,
- ADC_INPUT_VBAT,
- ADC_INPUT_IBAT,
- NBR_CAL_INPUTS,
-};
-
-/**
- * struct adc_cal_data - Table for storing gain and offset for the calibrated
- * ADC channels
- * @gain: Gain of the ADC channel
- * @offset: Offset of the ADC channel
- */
-struct adc_cal_data {
- s64 gain;
- s64 offset;
- u16 otp_calib_hi;
- u16 otp_calib_lo;
-};
-
-/**
- * struct ab8500_gpadc - AB8500 GPADC device information
- * @dev: pointer to the struct device
- * @node: a list of AB8500 GPADCs, hence prepared for
- reentrance
- * @parent: pointer to the struct ab8500
- * @ab8500_gpadc_complete: pointer to the struct completion, to indicate
- * the completion of gpadc conversion
- * @ab8500_gpadc_lock: structure of type mutex
- * @regu: pointer to the struct regulator
- * @irq_sw: interrupt number that is used by gpadc for Sw
- * conversion
- * @irq_hw: interrupt number that is used by gpadc for Hw
- * conversion
- * @cal_data array of ADC calibration data structs
- */
-struct ab8500_gpadc {
- struct device *dev;
- struct list_head node;
- struct ab8500 *parent;
- struct completion ab8500_gpadc_complete;
- struct mutex ab8500_gpadc_lock;
- struct regulator *regu;
- int irq_sw;
- int irq_hw;
- struct adc_cal_data cal_data[NBR_CAL_INPUTS];
-};
-
-static LIST_HEAD(ab8500_gpadc_list);
-
-/**
- * ab8500_gpadc_get() - returns a reference to the primary AB8500 GPADC
- * (i.e. the first GPADC in the instance list)
- */
-struct ab8500_gpadc *ab8500_gpadc_get(char *name)
-{
- struct ab8500_gpadc *gpadc;
-
- list_for_each_entry(gpadc, &ab8500_gpadc_list, node) {
- if (!strcmp(name, dev_name(gpadc->dev)))
- return gpadc;
- }
-
- return ERR_PTR(-ENOENT);
-}
-EXPORT_SYMBOL(ab8500_gpadc_get);
-
-/**
- * ab8500_gpadc_ad_to_voltage() - Convert a raw ADC value to a voltage
- */
-int ab8500_gpadc_ad_to_voltage(struct ab8500_gpadc *gpadc, u8 channel,
- int ad_value)
-{
- int res;
-
- switch (channel) {
- case MAIN_CHARGER_V:
- /* For some reason we don't have calibrated data */
- if (!gpadc->cal_data[ADC_INPUT_VMAIN].gain) {
- res = ADC_CH_CHG_V_MIN + (ADC_CH_CHG_V_MAX -
- ADC_CH_CHG_V_MIN) * ad_value /
- ADC_RESOLUTION;
- break;
- }
- /* Here we can use the calibrated data */
- res = (int) (ad_value * gpadc->cal_data[ADC_INPUT_VMAIN].gain +
- gpadc->cal_data[ADC_INPUT_VMAIN].offset) / CALIB_SCALE;
- break;
-
- case XTAL_TEMP:
- case BAT_CTRL:
- case BTEMP_BALL:
- case ACC_DETECT1:
- case ADC_AUX1:
- case ADC_AUX2:
- /* For some reason we don't have calibrated data */
- if (!gpadc->cal_data[ADC_INPUT_BTEMP].gain) {
- res = ADC_CH_BTEMP_MIN + (ADC_CH_BTEMP_MAX -
- ADC_CH_BTEMP_MIN) * ad_value /
- ADC_RESOLUTION;
- break;
- }
- /* Here we can use the calibrated data */
- res = (int) (ad_value * gpadc->cal_data[ADC_INPUT_BTEMP].gain +
- gpadc->cal_data[ADC_INPUT_BTEMP].offset) / CALIB_SCALE;
- break;
-
- case MAIN_BAT_V:
- case VBAT_TRUE_MEAS:
- /* For some reason we don't have calibrated data */
- if (!gpadc->cal_data[ADC_INPUT_VBAT].gain) {
- res = ADC_CH_VBAT_MIN + (ADC_CH_VBAT_MAX -
- ADC_CH_VBAT_MIN) * ad_value /
- ADC_RESOLUTION;
- break;
- }
- /* Here we can use the calibrated data */
- res = (int) (ad_value * gpadc->cal_data[ADC_INPUT_VBAT].gain +
- gpadc->cal_data[ADC_INPUT_VBAT].offset) / CALIB_SCALE;
- break;
-
- case DIE_TEMP:
- res = ADC_CH_DIETEMP_MIN +
- (ADC_CH_DIETEMP_MAX - ADC_CH_DIETEMP_MIN) * ad_value /
- ADC_RESOLUTION;
- break;
-
- case ACC_DETECT2:
- res = ADC_CH_ACCDET2_MIN +
- (ADC_CH_ACCDET2_MAX - ADC_CH_ACCDET2_MIN) * ad_value /
- ADC_RESOLUTION;
- break;
-
- case VBUS_V:
- res = ADC_CH_CHG_V_MIN +
- (ADC_CH_CHG_V_MAX - ADC_CH_CHG_V_MIN) * ad_value /
- ADC_RESOLUTION;
- break;
-
- case MAIN_CHARGER_C:
- case USB_CHARGER_C:
- res = ADC_CH_CHG_I_MIN +
- (ADC_CH_CHG_I_MAX - ADC_CH_CHG_I_MIN) * ad_value /
- ADC_RESOLUTION;
- break;
-
- case BK_BAT_V:
- res = ADC_CH_BKBAT_MIN +
- (ADC_CH_BKBAT_MAX - ADC_CH_BKBAT_MIN) * ad_value /
- ADC_RESOLUTION;
- break;
-
- case IBAT_VIRTUAL_CHANNEL:
- /* For some reason we don't have calibrated data */
- if (!gpadc->cal_data[ADC_INPUT_IBAT].gain) {
- res = ADC_CH_IBAT_MIN + (ADC_CH_IBAT_MAX -
- ADC_CH_IBAT_MIN) * ad_value /
- ADC_RESOLUTION;
- break;
- }
- /* Here we can use the calibrated data */
- res = (int) (ad_value * gpadc->cal_data[ADC_INPUT_IBAT].gain +
- gpadc->cal_data[ADC_INPUT_IBAT].offset)
- >> CALIB_SHIFT_IBAT;
- break;
-
- default:
- dev_err(gpadc->dev,
- "unknown channel, not possible to convert\n");
- res = -EINVAL;
- break;
-
- }
- return res;
-}
-EXPORT_SYMBOL(ab8500_gpadc_ad_to_voltage);
-
-/**
- * ab8500_gpadc_sw_hw_convert() - gpadc conversion
- * @channel: analog channel to be converted to digital data
- * @avg_sample: number of ADC sample to average
- * @trig_egde: selected ADC trig edge
- * @trig_timer: selected ADC trigger delay timer
- * @conv_type: selected conversion type (HW or SW conversion)
- *
- * This function converts the selected analog i/p to digital
- * data.
- */
-int ab8500_gpadc_sw_hw_convert(struct ab8500_gpadc *gpadc, u8 channel,
- u8 avg_sample, u8 trig_edge, u8 trig_timer, u8 conv_type)
-{
- int ad_value;
- int voltage;
-
- ad_value = ab8500_gpadc_read_raw(gpadc, channel, avg_sample,
- trig_edge, trig_timer, conv_type);
-
- /* On failure retry a second time */
- if (ad_value < 0)
- ad_value = ab8500_gpadc_read_raw(gpadc, channel, avg_sample,
- trig_edge, trig_timer, conv_type);
- if (ad_value < 0) {
- dev_err(gpadc->dev, "GPADC raw value failed ch: %d\n",
- channel);
- return ad_value;
- }
-
- voltage = ab8500_gpadc_ad_to_voltage(gpadc, channel, ad_value);
- if (voltage < 0)
- dev_err(gpadc->dev,
- "GPADC to voltage conversion failed ch: %d AD: 0x%x\n",
- channel, ad_value);
-
- return voltage;
-}
-EXPORT_SYMBOL(ab8500_gpadc_sw_hw_convert);
-
-/**
- * ab8500_gpadc_read_raw() - gpadc read
- * @channel: analog channel to be read
- * @avg_sample: number of ADC sample to average
- * @trig_edge: selected trig edge
- * @trig_timer: selected ADC trigger delay timer
- * @conv_type: selected conversion type (HW or SW conversion)
- *
- * This function obtains the raw ADC value for an hardware conversion,
- * this then needs to be converted by calling ab8500_gpadc_ad_to_voltage()
- */
-int ab8500_gpadc_read_raw(struct ab8500_gpadc *gpadc, u8 channel,
- u8 avg_sample, u8 trig_edge, u8 trig_timer, u8 conv_type)
-{
- return ab8500_gpadc_double_read_raw(gpadc, channel, avg_sample,
- trig_edge, trig_timer, conv_type,
- NULL);
-}
-
-int ab8500_gpadc_double_read_raw(struct ab8500_gpadc *gpadc, u8 channel,
- u8 avg_sample, u8 trig_edge, u8 trig_timer, u8 conv_type,
- int *ibat)
-{
- int ret;
- int looplimit = 0;
- unsigned long completion_timeout;
- u8 val, low_data, high_data, low_data2, high_data2;
- u8 val_reg1 = 0;
- unsigned int delay_min = 0;
- unsigned int delay_max = 0;
- u8 data_low_addr, data_high_addr;
-
- if (!gpadc)
- return -ENODEV;
-
- /* check if convertion is supported */
- if ((gpadc->irq_sw < 0) && (conv_type == ADC_SW))
- return -ENOTSUPP;
- if ((gpadc->irq_hw < 0) && (conv_type == ADC_HW))
- return -ENOTSUPP;
-
- mutex_lock(&gpadc->ab8500_gpadc_lock);
- /* Enable VTVout LDO this is required for GPADC */
- pm_runtime_get_sync(gpadc->dev);
-
- /* Check if ADC is not busy, lock and proceed */
- do {
- ret = abx500_get_register_interruptible(gpadc->dev,
- AB8500_GPADC, AB8500_GPADC_STAT_REG, &val);
- if (ret < 0)
- goto out;
- if (!(val & GPADC_BUSY))
- break;
- msleep(20);
- } while (++looplimit < 10);
- if (looplimit >= 10 && (val & GPADC_BUSY)) {
- dev_err(gpadc->dev, "gpadc_conversion: GPADC busy");
- ret = -EINVAL;
- goto out;
- }
-
- /* Enable GPADC */
- val_reg1 |= EN_GPADC;
-
- /* Select the channel source and set average samples */
- switch (avg_sample) {
- case SAMPLE_1:
- val = channel | AVG_1;
- break;
- case SAMPLE_4:
- val = channel | AVG_4;
- break;
- case SAMPLE_8:
- val = channel | AVG_8;
- break;
- default:
- val = channel | AVG_16;
- break;
- }
-
- if (conv_type == ADC_HW) {
- ret = abx500_set_register_interruptible(gpadc->dev,
- AB8500_GPADC, AB8500_GPADC_CTRL3_REG, val);
- val_reg1 |= EN_TRIG_EDGE;
- if (trig_edge)
- val_reg1 |= EN_FALLING;
- } else
- ret = abx500_set_register_interruptible(gpadc->dev,
- AB8500_GPADC, AB8500_GPADC_CTRL2_REG, val);
- if (ret < 0) {
- dev_err(gpadc->dev,
- "gpadc_conversion: set avg samples failed\n");
- goto out;
- }
-
- /*
- * Enable ADC, buffering, select rising edge and enable ADC path
- * charging current sense if it needed, ABB 3.0 needs some special
- * treatment too.
- */
- switch (channel) {
- case MAIN_CHARGER_C:
- case USB_CHARGER_C:
- val_reg1 |= EN_BUF | EN_ICHAR;
- break;
- case BTEMP_BALL:
- if (!is_ab8500_2p0_or_earlier(gpadc->parent)) {
- val_reg1 |= EN_BUF | BTEMP_PULL_UP;
- /*
- * Delay might be needed for ABB8500 cut 3.0, if not,
- * remove when hardware will be availible
- */
- delay_min = 1000; /* Delay in micro seconds */
- delay_max = 10000; /* large range optimises sleepmode */
- break;
- }
- /* Intentional fallthrough */
- default:
- val_reg1 |= EN_BUF;
- break;
- }
-
- /* Write configuration to register */
- ret = abx500_set_register_interruptible(gpadc->dev,
- AB8500_GPADC, AB8500_GPADC_CTRL1_REG, val_reg1);
- if (ret < 0) {
- dev_err(gpadc->dev,
- "gpadc_conversion: set Control register failed\n");
- goto out;
- }
-
- if (delay_min != 0)
- usleep_range(delay_min, delay_max);
-
- if (conv_type == ADC_HW) {
- /* Set trigger delay timer */
- ret = abx500_set_register_interruptible(gpadc->dev,
- AB8500_GPADC, AB8500_GPADC_AUTO_TIMER_REG, trig_timer);
- if (ret < 0) {
- dev_err(gpadc->dev,
- "gpadc_conversion: trig timer failed\n");
- goto out;
- }
- completion_timeout = 2 * HZ;
- data_low_addr = AB8500_GPADC_AUTODATAL_REG;
- data_high_addr = AB8500_GPADC_AUTODATAH_REG;
- } else {
- /* Start SW conversion */
- ret = abx500_mask_and_set_register_interruptible(gpadc->dev,
- AB8500_GPADC, AB8500_GPADC_CTRL1_REG,
- ADC_SW_CONV, ADC_SW_CONV);
- if (ret < 0) {
- dev_err(gpadc->dev,
- "gpadc_conversion: start s/w conv failed\n");
- goto out;
- }
- completion_timeout = msecs_to_jiffies(CONVERSION_TIME);
- data_low_addr = AB8500_GPADC_MANDATAL_REG;
- data_high_addr = AB8500_GPADC_MANDATAH_REG;
- }
-
- /* wait for completion of conversion */
- if (!wait_for_completion_timeout(&gpadc->ab8500_gpadc_complete,
- completion_timeout)) {
- dev_err(gpadc->dev,
- "timeout didn't receive GPADC conv interrupt\n");
- ret = -EINVAL;
- goto out;
- }
-
- /* Read the converted RAW data */
- ret = abx500_get_register_interruptible(gpadc->dev,
- AB8500_GPADC, data_low_addr, &low_data);
- if (ret < 0) {
- dev_err(gpadc->dev, "gpadc_conversion: read low data failed\n");
- goto out;
- }
-
- ret = abx500_get_register_interruptible(gpadc->dev,
- AB8500_GPADC, data_high_addr, &high_data);
- if (ret < 0) {
- dev_err(gpadc->dev, "gpadc_conversion: read high data failed\n");
- goto out;
- }
-
- /* Check if double convertion is required */
- if ((channel == BAT_CTRL_AND_IBAT) ||
- (channel == VBAT_MEAS_AND_IBAT) ||
- (channel == VBAT_TRUE_MEAS_AND_IBAT) ||
- (channel == BAT_TEMP_AND_IBAT)) {
-
- if (conv_type == ADC_HW) {
- /* not supported */
- ret = -ENOTSUPP;
- dev_err(gpadc->dev,
- "gpadc_conversion: only SW double conversion supported\n");
- goto out;
- } else {
- /* Read the converted RAW data 2 */
- ret = abx500_get_register_interruptible(gpadc->dev,
- AB8500_GPADC, AB8540_GPADC_MANDATA2L_REG,
- &low_data2);
- if (ret < 0) {
- dev_err(gpadc->dev,
- "gpadc_conversion: read sw low data 2 failed\n");
- goto out;
- }
-
- ret = abx500_get_register_interruptible(gpadc->dev,
- AB8500_GPADC, AB8540_GPADC_MANDATA2H_REG,
- &high_data2);
- if (ret < 0) {
- dev_err(gpadc->dev,
- "gpadc_conversion: read sw high data 2 failed\n");
- goto out;
- }
- if (ibat != NULL) {
- *ibat = (high_data2 << 8) | low_data2;
- } else {
- dev_warn(gpadc->dev,
- "gpadc_conversion: ibat not stored\n");
- }
-
- }
- }
-
- /* Disable GPADC */
- ret = abx500_set_register_interruptible(gpadc->dev, AB8500_GPADC,
- AB8500_GPADC_CTRL1_REG, DIS_GPADC);
- if (ret < 0) {
- dev_err(gpadc->dev, "gpadc_conversion: disable gpadc failed\n");
- goto out;
- }
-
- /* Disable VTVout LDO this is required for GPADC */
- pm_runtime_mark_last_busy(gpadc->dev);
- pm_runtime_put_autosuspend(gpadc->dev);
-
- mutex_unlock(&gpadc->ab8500_gpadc_lock);
-
- return (high_data << 8) | low_data;
-
-out:
- /*
- * It has shown to be needed to turn off the GPADC if an error occurs,
- * otherwise we might have problem when waiting for the busy bit in the
- * GPADC status register to go low. In V1.1 there wait_for_completion
- * seems to timeout when waiting for an interrupt.. Not seen in V2.0
- */
- (void) abx500_set_register_interruptible(gpadc->dev, AB8500_GPADC,
- AB8500_GPADC_CTRL1_REG, DIS_GPADC);
- pm_runtime_put(gpadc->dev);
- mutex_unlock(&gpadc->ab8500_gpadc_lock);
- dev_err(gpadc->dev,
- "gpadc_conversion: Failed to AD convert channel %d\n", channel);
- return ret;
-}
-EXPORT_SYMBOL(ab8500_gpadc_read_raw);
-
-/**
- * ab8500_bm_gpadcconvend_handler() - isr for gpadc conversion completion
- * @irq: irq number
- * @data: pointer to the data passed during request irq
- *
- * This is a interrupt service routine for gpadc conversion completion.
- * Notifies the gpadc completion is completed and the converted raw value
- * can be read from the registers.
- * Returns IRQ status(IRQ_HANDLED)
- */
-static irqreturn_t ab8500_bm_gpadcconvend_handler(int irq, void *_gpadc)
-{
- struct ab8500_gpadc *gpadc = _gpadc;
-
- complete(&gpadc->ab8500_gpadc_complete);
-
- return IRQ_HANDLED;
-}
-
-static int otp_cal_regs[] = {
- AB8500_GPADC_CAL_1,
- AB8500_GPADC_CAL_2,
- AB8500_GPADC_CAL_3,
- AB8500_GPADC_CAL_4,
- AB8500_GPADC_CAL_5,
- AB8500_GPADC_CAL_6,
- AB8500_GPADC_CAL_7,
-};
-
-static int otp4_cal_regs[] = {
- AB8540_GPADC_OTP4_REG_7,
- AB8540_GPADC_OTP4_REG_6,
- AB8540_GPADC_OTP4_REG_5,
-};
-
-static void ab8500_gpadc_read_calibration_data(struct ab8500_gpadc *gpadc)
-{
- int i;
- int ret[ARRAY_SIZE(otp_cal_regs)];
- u8 gpadc_cal[ARRAY_SIZE(otp_cal_regs)];
- int ret_otp4[ARRAY_SIZE(otp4_cal_regs)];
- u8 gpadc_otp4[ARRAY_SIZE(otp4_cal_regs)];
- int vmain_high, vmain_low;
- int btemp_high, btemp_low;
- int vbat_high, vbat_low;
- int ibat_high, ibat_low;
- s64 V_gain, V_offset, V2A_gain, V2A_offset;
- struct ab8500 *ab8500;
-
- ab8500 = gpadc->parent;
-
- /* First we read all OTP registers and store the error code */
- for (i = 0; i < ARRAY_SIZE(otp_cal_regs); i++) {
- ret[i] = abx500_get_register_interruptible(gpadc->dev,
- AB8500_OTP_EMUL, otp_cal_regs[i], &gpadc_cal[i]);
- if (ret[i] < 0)
- dev_err(gpadc->dev, "%s: read otp reg 0x%02x failed\n",
- __func__, otp_cal_regs[i]);
- }
-
- /*
- * The ADC calibration data is stored in OTP registers.
- * The layout of the calibration data is outlined below and a more
- * detailed description can be found in UM0836
- *
- * vm_h/l = vmain_high/low
- * bt_h/l = btemp_high/low
- * vb_h/l = vbat_high/low
- *
- * Data bits 8500/9540:
- * | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0
- * |.......|.......|.......|.......|.......|.......|.......|.......
- * | | vm_h9 | vm_h8
- * |.......|.......|.......|.......|.......|.......|.......|.......
- * | | vm_h7 | vm_h6 | vm_h5 | vm_h4 | vm_h3 | vm_h2
- * |.......|.......|.......|.......|.......|.......|.......|.......
- * | vm_h1 | vm_h0 | vm_l4 | vm_l3 | vm_l2 | vm_l1 | vm_l0 | bt_h9
- * |.......|.......|.......|.......|.......|.......|.......|.......
- * | bt_h8 | bt_h7 | bt_h6 | bt_h5 | bt_h4 | bt_h3 | bt_h2 | bt_h1
- * |.......|.......|.......|.......|.......|.......|.......|.......
- * | bt_h0 | bt_l4 | bt_l3 | bt_l2 | bt_l1 | bt_l0 | vb_h9 | vb_h8
- * |.......|.......|.......|.......|.......|.......|.......|.......
- * | vb_h7 | vb_h6 | vb_h5 | vb_h4 | vb_h3 | vb_h2 | vb_h1 | vb_h0
- * |.......|.......|.......|.......|.......|.......|.......|.......
- * | vb_l5 | vb_l4 | vb_l3 | vb_l2 | vb_l1 | vb_l0 |
- * |.......|.......|.......|.......|.......|.......|.......|.......
- *
- * Data bits 8540:
- * OTP2
- * | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0
- * |.......|.......|.......|.......|.......|.......|.......|.......
- * |
- * |.......|.......|.......|.......|.......|.......|.......|.......
- * | vm_h9 | vm_h8 | vm_h7 | vm_h6 | vm_h5 | vm_h4 | vm_h3 | vm_h2
- * |.......|.......|.......|.......|.......|.......|.......|.......
- * | vm_h1 | vm_h0 | vm_l4 | vm_l3 | vm_l2 | vm_l1 | vm_l0 | bt_h9
- * |.......|.......|.......|.......|.......|.......|.......|.......
- * | bt_h8 | bt_h7 | bt_h6 | bt_h5 | bt_h4 | bt_h3 | bt_h2 | bt_h1
- * |.......|.......|.......|.......|.......|.......|.......|.......
- * | bt_h0 | bt_l4 | bt_l3 | bt_l2 | bt_l1 | bt_l0 | vb_h9 | vb_h8
- * |.......|.......|.......|.......|.......|.......|.......|.......
- * | vb_h7 | vb_h6 | vb_h5 | vb_h4 | vb_h3 | vb_h2 | vb_h1 | vb_h0
- * |.......|.......|.......|.......|.......|.......|.......|.......
- * | vb_l5 | vb_l4 | vb_l3 | vb_l2 | vb_l1 | vb_l0 |
- * |.......|.......|.......|.......|.......|.......|.......|.......
- *
- * Data bits 8540:
- * OTP4
- * | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0
- * |.......|.......|.......|.......|.......|.......|.......|.......
- * | | ib_h9 | ib_h8 | ib_h7
- * |.......|.......|.......|.......|.......|.......|.......|.......
- * | ib_h6 | ib_h5 | ib_h4 | ib_h3 | ib_h2 | ib_h1 | ib_h0 | ib_l5
- * |.......|.......|.......|.......|.......|.......|.......|.......
- * | ib_l4 | ib_l3 | ib_l2 | ib_l1 | ib_l0 |
- *
- *
- * Ideal output ADC codes corresponding to injected input voltages
- * during manufacturing is:
- *
- * vmain_high: Vin = 19500mV / ADC ideal code = 997
- * vmain_low: Vin = 315mV / ADC ideal code = 16
- * btemp_high: Vin = 1300mV / ADC ideal code = 985
- * btemp_low: Vin = 21mV / ADC ideal code = 16
- * vbat_high: Vin = 4700mV / ADC ideal code = 982
- * vbat_low: Vin = 2380mV / ADC ideal code = 33
- */
-
- if (is_ab8540(ab8500)) {
- /* Calculate gain and offset for VMAIN if all reads succeeded*/
- if (!(ret[1] < 0 || ret[2] < 0)) {
- vmain_high = (((gpadc_cal[1] & 0xFF) << 2) |
- ((gpadc_cal[2] & 0xC0) >> 6));
- vmain_low = ((gpadc_cal[2] & 0x3E) >> 1);
-
- gpadc->cal_data[ADC_INPUT_VMAIN].otp_calib_hi =
- (u16)vmain_high;
- gpadc->cal_data[ADC_INPUT_VMAIN].otp_calib_lo =
- (u16)vmain_low;
-
- gpadc->cal_data[ADC_INPUT_VMAIN].gain = CALIB_SCALE *
- (19500 - 315) / (vmain_high - vmain_low);
- gpadc->cal_data[ADC_INPUT_VMAIN].offset = CALIB_SCALE *
- 19500 - (CALIB_SCALE * (19500 - 315) /
- (vmain_high - vmain_low)) * vmain_high;
- } else {
- gpadc->cal_data[ADC_INPUT_VMAIN].gain = 0;
- }
-
- /* Read IBAT calibration Data */
- for (i = 0; i < ARRAY_SIZE(otp4_cal_regs); i++) {
- ret_otp4[i] = abx500_get_register_interruptible(
- gpadc->dev, AB8500_OTP_EMUL,
- otp4_cal_regs[i], &gpadc_otp4[i]);
- if (ret_otp4[i] < 0)
- dev_err(gpadc->dev,
- "%s: read otp4 reg 0x%02x failed\n",
- __func__, otp4_cal_regs[i]);
- }
-
- /* Calculate gain and offset for IBAT if all reads succeeded */
- if (!(ret_otp4[0] < 0 || ret_otp4[1] < 0 || ret_otp4[2] < 0)) {
- ibat_high = (((gpadc_otp4[0] & 0x07) << 7) |
- ((gpadc_otp4[1] & 0xFE) >> 1));
- ibat_low = (((gpadc_otp4[1] & 0x01) << 5) |
- ((gpadc_otp4[2] & 0xF8) >> 3));
-
- gpadc->cal_data[ADC_INPUT_IBAT].otp_calib_hi =
- (u16)ibat_high;
- gpadc->cal_data[ADC_INPUT_IBAT].otp_calib_lo =
- (u16)ibat_low;
-
- V_gain = ((IBAT_VDROP_H - IBAT_VDROP_L)
- << CALIB_SHIFT_IBAT) / (ibat_high - ibat_low);
-
- V_offset = (IBAT_VDROP_H << CALIB_SHIFT_IBAT) -
- (((IBAT_VDROP_H - IBAT_VDROP_L) <<
- CALIB_SHIFT_IBAT) / (ibat_high - ibat_low))
- * ibat_high;
- /*
- * Result obtained is in mV (at a scale factor),
- * we need to calculate gain and offset to get mA
- */
- V2A_gain = (ADC_CH_IBAT_MAX - ADC_CH_IBAT_MIN)/
- (ADC_CH_IBAT_MAX_V - ADC_CH_IBAT_MIN_V);
- V2A_offset = ((ADC_CH_IBAT_MAX_V * ADC_CH_IBAT_MIN -
- ADC_CH_IBAT_MAX * ADC_CH_IBAT_MIN_V)
- << CALIB_SHIFT_IBAT)
- / (ADC_CH_IBAT_MAX_V - ADC_CH_IBAT_MIN_V);
-
- gpadc->cal_data[ADC_INPUT_IBAT].gain =
- V_gain * V2A_gain;
- gpadc->cal_data[ADC_INPUT_IBAT].offset =
- V_offset * V2A_gain + V2A_offset;
- } else {
- gpadc->cal_data[ADC_INPUT_IBAT].gain = 0;
- }
-
- dev_dbg(gpadc->dev, "IBAT gain %llu offset %llu\n",
- gpadc->cal_data[ADC_INPUT_IBAT].gain,
- gpadc->cal_data[ADC_INPUT_IBAT].offset);
- } else {
- /* Calculate gain and offset for VMAIN if all reads succeeded */
- if (!(ret[0] < 0 || ret[1] < 0 || ret[2] < 0)) {
- vmain_high = (((gpadc_cal[0] & 0x03) << 8) |
- ((gpadc_cal[1] & 0x3F) << 2) |
- ((gpadc_cal[2] & 0xC0) >> 6));
- vmain_low = ((gpadc_cal[2] & 0x3E) >> 1);
-
- gpadc->cal_data[ADC_INPUT_VMAIN].otp_calib_hi =
- (u16)vmain_high;
- gpadc->cal_data[ADC_INPUT_VMAIN].otp_calib_lo =
- (u16)vmain_low;
-
- gpadc->cal_data[ADC_INPUT_VMAIN].gain = CALIB_SCALE *
- (19500 - 315) / (vmain_high - vmain_low);
-
- gpadc->cal_data[ADC_INPUT_VMAIN].offset = CALIB_SCALE *
- 19500 - (CALIB_SCALE * (19500 - 315) /
- (vmain_high - vmain_low)) * vmain_high;
- } else {
- gpadc->cal_data[ADC_INPUT_VMAIN].gain = 0;
- }
- }
-
- /* Calculate gain and offset for BTEMP if all reads succeeded */
- if (!(ret[2] < 0 || ret[3] < 0 || ret[4] < 0)) {
- btemp_high = (((gpadc_cal[2] & 0x01) << 9) |
- (gpadc_cal[3] << 1) | ((gpadc_cal[4] & 0x80) >> 7));
- btemp_low = ((gpadc_cal[4] & 0x7C) >> 2);
-
- gpadc->cal_data[ADC_INPUT_BTEMP].otp_calib_hi = (u16)btemp_high;
- gpadc->cal_data[ADC_INPUT_BTEMP].otp_calib_lo = (u16)btemp_low;
-
- gpadc->cal_data[ADC_INPUT_BTEMP].gain =
- CALIB_SCALE * (1300 - 21) / (btemp_high - btemp_low);
- gpadc->cal_data[ADC_INPUT_BTEMP].offset = CALIB_SCALE * 1300 -
- (CALIB_SCALE * (1300 - 21) / (btemp_high - btemp_low))
- * btemp_high;
- } else {
- gpadc->cal_data[ADC_INPUT_BTEMP].gain = 0;
- }
-
- /* Calculate gain and offset for VBAT if all reads succeeded */
- if (!(ret[4] < 0 || ret[5] < 0 || ret[6] < 0)) {
- vbat_high = (((gpadc_cal[4] & 0x03) << 8) | gpadc_cal[5]);
- vbat_low = ((gpadc_cal[6] & 0xFC) >> 2);
-
- gpadc->cal_data[ADC_INPUT_VBAT].otp_calib_hi = (u16)vbat_high;
- gpadc->cal_data[ADC_INPUT_VBAT].otp_calib_lo = (u16)vbat_low;
-
- gpadc->cal_data[ADC_INPUT_VBAT].gain = CALIB_SCALE *
- (4700 - 2380) / (vbat_high - vbat_low);
- gpadc->cal_data[ADC_INPUT_VBAT].offset = CALIB_SCALE * 4700 -
- (CALIB_SCALE * (4700 - 2380) /
- (vbat_high - vbat_low)) * vbat_high;
- } else {
- gpadc->cal_data[ADC_INPUT_VBAT].gain = 0;
- }
-
- dev_dbg(gpadc->dev, "VMAIN gain %llu offset %llu\n",
- gpadc->cal_data[ADC_INPUT_VMAIN].gain,
- gpadc->cal_data[ADC_INPUT_VMAIN].offset);
-
- dev_dbg(gpadc->dev, "BTEMP gain %llu offset %llu\n",
- gpadc->cal_data[ADC_INPUT_BTEMP].gain,
- gpadc->cal_data[ADC_INPUT_BTEMP].offset);
-
- dev_dbg(gpadc->dev, "VBAT gain %llu offset %llu\n",
- gpadc->cal_data[ADC_INPUT_VBAT].gain,
- gpadc->cal_data[ADC_INPUT_VBAT].offset);
-}
-
-#ifdef CONFIG_PM
-static int ab8500_gpadc_runtime_suspend(struct device *dev)
-{
- struct ab8500_gpadc *gpadc = dev_get_drvdata(dev);
-
- regulator_disable(gpadc->regu);
- return 0;
-}
-
-static int ab8500_gpadc_runtime_resume(struct device *dev)
-{
- struct ab8500_gpadc *gpadc = dev_get_drvdata(dev);
- int ret;
-
- ret = regulator_enable(gpadc->regu);
- if (ret)
- dev_err(dev, "Failed to enable vtvout LDO: %d\n", ret);
- return ret;
-}
-#endif
-
-#ifdef CONFIG_PM_SLEEP
-static int ab8500_gpadc_suspend(struct device *dev)
-{
- struct ab8500_gpadc *gpadc = dev_get_drvdata(dev);
-
- mutex_lock(&gpadc->ab8500_gpadc_lock);
-
- pm_runtime_get_sync(dev);
-
- regulator_disable(gpadc->regu);
- return 0;
-}
-
-static int ab8500_gpadc_resume(struct device *dev)
-{
- struct ab8500_gpadc *gpadc = dev_get_drvdata(dev);
- int ret;
-
- ret = regulator_enable(gpadc->regu);
- if (ret)
- dev_err(dev, "Failed to enable vtvout LDO: %d\n", ret);
-
- pm_runtime_mark_last_busy(gpadc->dev);
- pm_runtime_put_autosuspend(gpadc->dev);
-
- mutex_unlock(&gpadc->ab8500_gpadc_lock);
- return ret;
-}
-#endif
-
-static int ab8500_gpadc_probe(struct platform_device *pdev)
-{
- int ret = 0;
- struct ab8500_gpadc *gpadc;
-
- gpadc = devm_kzalloc(&pdev->dev,
- sizeof(struct ab8500_gpadc), GFP_KERNEL);
- if (!gpadc)
- return -ENOMEM;
-
- gpadc->irq_sw = platform_get_irq_byname(pdev, "SW_CONV_END");
- if (gpadc->irq_sw < 0)
- dev_err(gpadc->dev, "failed to get platform sw_conv_end irq\n");
-
- gpadc->irq_hw = platform_get_irq_byname(pdev, "HW_CONV_END");
- if (gpadc->irq_hw < 0)
- dev_err(gpadc->dev, "failed to get platform hw_conv_end irq\n");
-
- gpadc->dev = &pdev->dev;
- gpadc->parent = dev_get_drvdata(pdev->dev.parent);
- mutex_init(&gpadc->ab8500_gpadc_lock);
-
- /* Initialize completion used to notify completion of conversion */
- init_completion(&gpadc->ab8500_gpadc_complete);
-
- /* Register interrupts */
- if (gpadc->irq_sw >= 0) {
- ret = request_threaded_irq(gpadc->irq_sw, NULL,
- ab8500_bm_gpadcconvend_handler,
- IRQF_NO_SUSPEND | IRQF_SHARED | IRQF_ONESHOT,
- "ab8500-gpadc-sw",
- gpadc);
- if (ret < 0) {
- dev_err(gpadc->dev,
- "Failed to register interrupt irq: %d\n",
- gpadc->irq_sw);
- goto fail;
- }
- }
-
- if (gpadc->irq_hw >= 0) {
- ret = request_threaded_irq(gpadc->irq_hw, NULL,
- ab8500_bm_gpadcconvend_handler,
- IRQF_NO_SUSPEND | IRQF_SHARED | IRQF_ONESHOT,
- "ab8500-gpadc-hw",
- gpadc);
- if (ret < 0) {
- dev_err(gpadc->dev,
- "Failed to register interrupt irq: %d\n",
- gpadc->irq_hw);
- goto fail_irq;
- }
- }
-
- /* VTVout LDO used to power up ab8500-GPADC */
- gpadc->regu = devm_regulator_get(&pdev->dev, "vddadc");
- if (IS_ERR(gpadc->regu)) {
- ret = PTR_ERR(gpadc->regu);
- dev_err(gpadc->dev, "failed to get vtvout LDO\n");
- goto fail_irq;
- }
-
- platform_set_drvdata(pdev, gpadc);
-
- ret = regulator_enable(gpadc->regu);
- if (ret) {
- dev_err(gpadc->dev, "Failed to enable vtvout LDO: %d\n", ret);
- goto fail_enable;
- }
-
- pm_runtime_set_autosuspend_delay(gpadc->dev, GPADC_AUDOSUSPEND_DELAY);
- pm_runtime_use_autosuspend(gpadc->dev);
- pm_runtime_set_active(gpadc->dev);
- pm_runtime_enable(gpadc->dev);
-
- ab8500_gpadc_read_calibration_data(gpadc);
- list_add_tail(&gpadc->node, &ab8500_gpadc_list);
- dev_dbg(gpadc->dev, "probe success\n");
-
- return 0;
-
-fail_enable:
-fail_irq:
- free_irq(gpadc->irq_sw, gpadc);
- free_irq(gpadc->irq_hw, gpadc);
-fail:
- return ret;
-}
-
-static int ab8500_gpadc_remove(struct platform_device *pdev)
-{
- struct ab8500_gpadc *gpadc = platform_get_drvdata(pdev);
-
- /* remove this gpadc entry from the list */
- list_del(&gpadc->node);
- /* remove interrupt - completion of Sw ADC conversion */
- if (gpadc->irq_sw >= 0)
- free_irq(gpadc->irq_sw, gpadc);
- if (gpadc->irq_hw >= 0)
- free_irq(gpadc->irq_hw, gpadc);
-
- pm_runtime_get_sync(gpadc->dev);
- pm_runtime_disable(gpadc->dev);
-
- regulator_disable(gpadc->regu);
-
- pm_runtime_set_suspended(gpadc->dev);
-
- pm_runtime_put_noidle(gpadc->dev);
-
- return 0;
-}
-
-static const struct dev_pm_ops ab8500_gpadc_pm_ops = {
- SET_RUNTIME_PM_OPS(ab8500_gpadc_runtime_suspend,
- ab8500_gpadc_runtime_resume,
- NULL)
- SET_SYSTEM_SLEEP_PM_OPS(ab8500_gpadc_suspend,
- ab8500_gpadc_resume)
-
-};
-
-static struct platform_driver ab8500_gpadc_driver = {
- .probe = ab8500_gpadc_probe,
- .remove = ab8500_gpadc_remove,
- .driver = {
- .name = "ab8500-gpadc",
- .pm = &ab8500_gpadc_pm_ops,
- },
-};
-
-static int __init ab8500_gpadc_init(void)
-{
- return platform_driver_register(&ab8500_gpadc_driver);
-}
-subsys_initcall_sync(ab8500_gpadc_init);
-
-/**
- * ab8540_gpadc_get_otp() - returns OTP values
- *
- */
-void ab8540_gpadc_get_otp(struct ab8500_gpadc *gpadc,
- u16 *vmain_l, u16 *vmain_h, u16 *btemp_l, u16 *btemp_h,
- u16 *vbat_l, u16 *vbat_h, u16 *ibat_l, u16 *ibat_h)
-{
- *vmain_l = gpadc->cal_data[ADC_INPUT_VMAIN].otp_calib_lo;
- *vmain_h = gpadc->cal_data[ADC_INPUT_VMAIN].otp_calib_hi;
- *btemp_l = gpadc->cal_data[ADC_INPUT_BTEMP].otp_calib_lo;
- *btemp_h = gpadc->cal_data[ADC_INPUT_BTEMP].otp_calib_hi;
- *vbat_l = gpadc->cal_data[ADC_INPUT_VBAT].otp_calib_lo;
- *vbat_h = gpadc->cal_data[ADC_INPUT_VBAT].otp_calib_hi;
- *ibat_l = gpadc->cal_data[ADC_INPUT_IBAT].otp_calib_lo;
- *ibat_h = gpadc->cal_data[ADC_INPUT_IBAT].otp_calib_hi;
-}
diff --git a/drivers/power/reset/at91-reset.c b/drivers/power/reset/at91-reset.c
index 44ca983a49a1..d94e3267c3b6 100644
--- a/drivers/power/reset/at91-reset.c
+++ b/drivers/power/reset/at91-reset.c
@@ -131,7 +131,7 @@ static int at91sam9g45_restart(struct notifier_block *this, unsigned long mode,
static int sama5d3_restart(struct notifier_block *this, unsigned long mode,
void *cmd)
{
- writel(cpu_to_le32(AT91_RSTC_KEY | AT91_RSTC_PERRST | AT91_RSTC_PROCRST),
+ writel(AT91_RSTC_KEY | AT91_RSTC_PERRST | AT91_RSTC_PROCRST,
at91_rstc_base);
return NOTIFY_DONE;
@@ -140,9 +140,7 @@ static int sama5d3_restart(struct notifier_block *this, unsigned long mode,
static int samx7_restart(struct notifier_block *this, unsigned long mode,
void *cmd)
{
- writel(cpu_to_le32(AT91_RSTC_KEY | AT91_RSTC_PROCRST),
- at91_rstc_base);
-
+ writel(AT91_RSTC_KEY | AT91_RSTC_PROCRST, at91_rstc_base);
return NOTIFY_DONE;
}
diff --git a/drivers/power/reset/at91-sama5d2_shdwc.c b/drivers/power/reset/at91-sama5d2_shdwc.c
index e341cc5c0ea6..1c18f465a245 100644
--- a/drivers/power/reset/at91-sama5d2_shdwc.c
+++ b/drivers/power/reset/at91-sama5d2_shdwc.c
@@ -269,6 +269,12 @@ static const struct of_device_id at91_shdwc_of_match[] = {
};
MODULE_DEVICE_TABLE(of, at91_shdwc_of_match);
+static const struct of_device_id at91_pmc_ids[] = {
+ { .compatible = "atmel,sama5d2-pmc" },
+ { .compatible = "microchip,sam9x60-pmc" },
+ { /* Sentinel. */ }
+};
+
static int __init at91_shdwc_probe(struct platform_device *pdev)
{
struct resource *res;
@@ -313,7 +319,7 @@ static int __init at91_shdwc_probe(struct platform_device *pdev)
at91_shdwc_dt_configure(pdev);
- np = of_find_compatible_node(NULL, NULL, "atmel,sama5d2-pmc");
+ np = of_find_matching_node(NULL, at91_pmc_ids);
if (!np) {
ret = -ENODEV;
goto clk_disable;
diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig
index c84a7b1caeb6..27164a1d3c7c 100644
--- a/drivers/power/supply/Kconfig
+++ b/drivers/power/supply/Kconfig
@@ -629,7 +629,7 @@ config BATTERY_GAUGE_LTC2941
config AB8500_BM
bool "AB8500 Battery Management Driver"
- depends on AB8500_CORE && AB8500_GPADC
+ depends on AB8500_CORE && AB8500_GPADC && (IIO = y)
help
Say Y to include support for AB8500 battery management.
diff --git a/drivers/power/supply/ab8500_btemp.c b/drivers/power/supply/ab8500_btemp.c
index 8fe81259bfd9..909f0242bacb 100644
--- a/drivers/power/supply/ab8500_btemp.c
+++ b/drivers/power/supply/ab8500_btemp.c
@@ -26,7 +26,7 @@
#include <linux/mfd/abx500.h>
#include <linux/mfd/abx500/ab8500.h>
#include <linux/mfd/abx500/ab8500-bm.h>
-#include <linux/mfd/abx500/ab8500-gpadc.h>
+#include <linux/iio/consumer.h>
#define VTVOUT_V 1800
@@ -79,7 +79,8 @@ struct ab8500_btemp_ranges {
* @bat_temp: Dispatched battery temperature in degree Celsius
* @prev_bat_temp Last measured battery temperature in degree Celsius
* @parent: Pointer to the struct ab8500
- * @gpadc: Pointer to the struct gpadc
+ * @adc_btemp_ball: ADC channel for the battery ball temperature
+ * @adc_bat_ctrl: ADC channel for the battery control
* @fg: Pointer to the struct fg
* @bm: Platform specific battery management information
* @btemp_psy: Structure for BTEMP specific battery properties
@@ -96,7 +97,8 @@ struct ab8500_btemp {
int bat_temp;
int prev_bat_temp;
struct ab8500 *parent;
- struct ab8500_gpadc *gpadc;
+ struct iio_channel *btemp_ball;
+ struct iio_channel *bat_ctrl;
struct ab8500_fg *fg;
struct abx500_bm_data *bm;
struct power_supply *btemp_psy;
@@ -177,13 +179,13 @@ static int ab8500_btemp_batctrl_volt_to_res(struct ab8500_btemp *di,
*/
static int ab8500_btemp_read_batctrl_voltage(struct ab8500_btemp *di)
{
- int vbtemp;
+ int vbtemp, ret;
static int prev;
- vbtemp = ab8500_gpadc_convert(di->gpadc, BAT_CTRL);
- if (vbtemp < 0) {
+ ret = iio_read_channel_processed(di->bat_ctrl, &vbtemp);
+ if (ret < 0) {
dev_err(di->dev,
- "%s gpadc conversion failed, using previous value",
+ "%s ADC conversion failed, using previous value",
__func__);
return prev;
}
@@ -455,7 +457,7 @@ static int ab8500_btemp_res_to_temp(struct ab8500_btemp *di,
*/
static int ab8500_btemp_measure_temp(struct ab8500_btemp *di)
{
- int temp;
+ int temp, ret;
static int prev;
int rbat, rntc, vntc;
u8 id;
@@ -480,10 +482,10 @@ static int ab8500_btemp_measure_temp(struct ab8500_btemp *di)
di->bm->bat_type[id].r_to_t_tbl,
di->bm->bat_type[id].n_temp_tbl_elements, rbat);
} else {
- vntc = ab8500_gpadc_convert(di->gpadc, BTEMP_BALL);
- if (vntc < 0) {
+ ret = iio_read_channel_processed(di->btemp_ball, &vntc);
+ if (ret < 0) {
dev_err(di->dev,
- "%s gpadc conversion failed,"
+ "%s ADC conversion failed,"
" using previous value\n", __func__);
return prev;
}
@@ -1024,7 +1026,22 @@ static int ab8500_btemp_probe(struct platform_device *pdev)
/* get parent data */
di->dev = &pdev->dev;
di->parent = dev_get_drvdata(pdev->dev.parent);
- di->gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
+
+ /* Get ADC channels */
+ di->btemp_ball = devm_iio_channel_get(&pdev->dev, "btemp_ball");
+ if (IS_ERR(di->btemp_ball)) {
+ if (PTR_ERR(di->btemp_ball) == -ENODEV)
+ return -EPROBE_DEFER;
+ dev_err(&pdev->dev, "failed to get BTEMP BALL ADC channel\n");
+ return PTR_ERR(di->btemp_ball);
+ }
+ di->bat_ctrl = devm_iio_channel_get(&pdev->dev, "bat_ctrl");
+ if (IS_ERR(di->bat_ctrl)) {
+ if (PTR_ERR(di->bat_ctrl) == -ENODEV)
+ return -EPROBE_DEFER;
+ dev_err(&pdev->dev, "failed to get BAT CTRL ADC channel\n");
+ return PTR_ERR(di->bat_ctrl);
+ }
di->initialized = false;
@@ -1082,6 +1099,11 @@ static int ab8500_btemp_probe(struct platform_device *pdev)
/* Register interrupts */
for (i = 0; i < ARRAY_SIZE(ab8500_btemp_irq); i++) {
irq = platform_get_irq_byname(pdev, ab8500_btemp_irq[i].name);
+ if (irq < 0) {
+ ret = irq;
+ goto free_irq;
+ }
+
ret = request_threaded_irq(irq, NULL, ab8500_btemp_irq[i].isr,
IRQF_SHARED | IRQF_NO_SUSPEND,
ab8500_btemp_irq[i].name, di);
@@ -1104,13 +1126,13 @@ static int ab8500_btemp_probe(struct platform_device *pdev)
return ret;
free_irq:
- power_supply_unregister(di->btemp_psy);
-
/* We also have to free all successfully registered irqs */
for (i = i - 1; i >= 0; i--) {
irq = platform_get_irq_byname(pdev, ab8500_btemp_irq[i].name);
free_irq(irq, di);
}
+
+ power_supply_unregister(di->btemp_psy);
free_btemp_wq:
destroy_workqueue(di->btemp_wq);
return ret;
diff --git a/drivers/power/supply/ab8500_charger.c b/drivers/power/supply/ab8500_charger.c
index e51d0e72beea..8a0f9d769690 100644
--- a/drivers/power/supply/ab8500_charger.c
+++ b/drivers/power/supply/ab8500_charger.c
@@ -29,10 +29,10 @@
#include <linux/mfd/abx500/ab8500.h>
#include <linux/mfd/abx500.h>
#include <linux/mfd/abx500/ab8500-bm.h>
-#include <linux/mfd/abx500/ab8500-gpadc.h>
#include <linux/mfd/abx500/ux500_chargalg.h>
#include <linux/usb/otg.h>
#include <linux/mutex.h>
+#include <linux/iio/consumer.h>
/* Charger constants */
#define NO_PW_CONN 0
@@ -233,7 +233,10 @@ struct ab8500_charger_max_usb_in_curr {
* @current_stepping_sessions:
* Counter for current stepping sessions
* @parent: Pointer to the struct ab8500
- * @gpadc: Pointer to the struct gpadc
+ * @adc_main_charger_v ADC channel for main charger voltage
+ * @adc_main_charger_c ADC channel for main charger current
+ * @adc_vbus_v ADC channel for USB charger voltage
+ * @adc_usb_charger_c ADC channel for USB charger current
* @bm: Platform specific battery management information
* @flags: Structure for information about events triggered
* @usb_state: Structure for usb stack information
@@ -283,7 +286,10 @@ struct ab8500_charger {
int is_aca_rid;
atomic_t current_stepping_sessions;
struct ab8500 *parent;
- struct ab8500_gpadc *gpadc;
+ struct iio_channel *adc_main_charger_v;
+ struct iio_channel *adc_main_charger_c;
+ struct iio_channel *adc_vbus_v;
+ struct iio_channel *adc_usb_charger_c;
struct abx500_bm_data *bm;
struct ab8500_charger_event_flags flags;
struct ab8500_charger_usb_state usb_state;
@@ -459,13 +465,13 @@ static void ab8500_charger_set_usb_connected(struct ab8500_charger *di,
*/
static int ab8500_charger_get_ac_voltage(struct ab8500_charger *di)
{
- int vch;
+ int vch, ret;
/* Only measure voltage if the charger is connected */
if (di->ac.charger_connected) {
- vch = ab8500_gpadc_convert(di->gpadc, MAIN_CHARGER_V);
- if (vch < 0)
- dev_err(di->dev, "%s gpadc conv failed,\n", __func__);
+ ret = iio_read_channel_processed(di->adc_main_charger_v, &vch);
+ if (ret < 0)
+ dev_err(di->dev, "%s ADC conv failed,\n", __func__);
} else {
vch = 0;
}
@@ -510,13 +516,13 @@ static int ab8500_charger_ac_cv(struct ab8500_charger *di)
*/
static int ab8500_charger_get_vbus_voltage(struct ab8500_charger *di)
{
- int vch;
+ int vch, ret;
/* Only measure voltage if the charger is connected */
if (di->usb.charger_connected) {
- vch = ab8500_gpadc_convert(di->gpadc, VBUS_V);
- if (vch < 0)
- dev_err(di->dev, "%s gpadc conv failed\n", __func__);
+ ret = iio_read_channel_processed(di->adc_vbus_v, &vch);
+ if (ret < 0)
+ dev_err(di->dev, "%s ADC conv failed,\n", __func__);
} else {
vch = 0;
}
@@ -532,13 +538,13 @@ static int ab8500_charger_get_vbus_voltage(struct ab8500_charger *di)
*/
static int ab8500_charger_get_usb_current(struct ab8500_charger *di)
{
- int ich;
+ int ich, ret;
/* Only measure current if the charger is online */
if (di->usb.charger_online) {
- ich = ab8500_gpadc_convert(di->gpadc, USB_CHARGER_C);
- if (ich < 0)
- dev_err(di->dev, "%s gpadc conv failed\n", __func__);
+ ret = iio_read_channel_processed(di->adc_usb_charger_c, &ich);
+ if (ret < 0)
+ dev_err(di->dev, "%s ADC conv failed,\n", __func__);
} else {
ich = 0;
}
@@ -554,13 +560,13 @@ static int ab8500_charger_get_usb_current(struct ab8500_charger *di)
*/
static int ab8500_charger_get_ac_current(struct ab8500_charger *di)
{
- int ich;
+ int ich, ret;
/* Only measure current if the charger is online */
if (di->ac.charger_online) {
- ich = ab8500_gpadc_convert(di->gpadc, MAIN_CHARGER_C);
- if (ich < 0)
- dev_err(di->dev, "%s gpadc conv failed\n", __func__);
+ ret = iio_read_channel_processed(di->adc_main_charger_c, &ich);
+ if (ret < 0)
+ dev_err(di->dev, "%s ADC conv failed,\n", __func__);
} else {
ich = 0;
}
@@ -3371,7 +3377,39 @@ static int ab8500_charger_probe(struct platform_device *pdev)
/* get parent data */
di->dev = &pdev->dev;
di->parent = dev_get_drvdata(pdev->dev.parent);
- di->gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
+
+ /* Get ADC channels */
+ di->adc_main_charger_v = devm_iio_channel_get(&pdev->dev,
+ "main_charger_v");
+ if (IS_ERR(di->adc_main_charger_v)) {
+ if (PTR_ERR(di->adc_main_charger_v) == -ENODEV)
+ return -EPROBE_DEFER;
+ dev_err(&pdev->dev, "failed to get ADC main charger voltage\n");
+ return PTR_ERR(di->adc_main_charger_v);
+ }
+ di->adc_main_charger_c = devm_iio_channel_get(&pdev->dev,
+ "main_charger_c");
+ if (IS_ERR(di->adc_main_charger_c)) {
+ if (PTR_ERR(di->adc_main_charger_c) == -ENODEV)
+ return -EPROBE_DEFER;
+ dev_err(&pdev->dev, "failed to get ADC main charger current\n");
+ return PTR_ERR(di->adc_main_charger_c);
+ }
+ di->adc_vbus_v = devm_iio_channel_get(&pdev->dev, "vbus_v");
+ if (IS_ERR(di->adc_vbus_v)) {
+ if (PTR_ERR(di->adc_vbus_v) == -ENODEV)
+ return -EPROBE_DEFER;
+ dev_err(&pdev->dev, "failed to get ADC USB charger voltage\n");
+ return PTR_ERR(di->adc_vbus_v);
+ }
+ di->adc_usb_charger_c = devm_iio_channel_get(&pdev->dev,
+ "usb_charger_c");
+ if (IS_ERR(di->adc_usb_charger_c)) {
+ if (PTR_ERR(di->adc_usb_charger_c) == -ENODEV)
+ return -EPROBE_DEFER;
+ dev_err(&pdev->dev, "failed to get ADC USB charger current\n");
+ return PTR_ERR(di->adc_usb_charger_c);
+ }
/* initialize lock */
spin_lock_init(&di->usb_state.usb_lock);
@@ -3556,6 +3594,11 @@ static int ab8500_charger_probe(struct platform_device *pdev)
/* Register interrupts */
for (i = 0; i < ARRAY_SIZE(ab8500_charger_irq); i++) {
irq = platform_get_irq_byname(pdev, ab8500_charger_irq[i].name);
+ if (irq < 0) {
+ ret = irq;
+ goto free_irq;
+ }
+
ret = request_threaded_irq(irq, NULL, ab8500_charger_irq[i].isr,
IRQF_SHARED | IRQF_NO_SUSPEND,
ab8500_charger_irq[i].name, di);
diff --git a/drivers/power/supply/ab8500_fg.c b/drivers/power/supply/ab8500_fg.c
index 6fc4bc30644c..c3912ee9eb99 100644
--- a/drivers/power/supply/ab8500_fg.c
+++ b/drivers/power/supply/ab8500_fg.c
@@ -32,7 +32,7 @@
#include <linux/mfd/abx500.h>
#include <linux/mfd/abx500/ab8500.h>
#include <linux/mfd/abx500/ab8500-bm.h>
-#include <linux/mfd/abx500/ab8500-gpadc.h>
+#include <linux/iio/consumer.h>
#include <linux/kernel.h>
#define MILLI_TO_MICRO 1000
@@ -182,7 +182,7 @@ struct inst_curr_result_list {
* @bat_cap: Structure for battery capacity specific parameters
* @avg_cap: Average capacity filter
* @parent: Pointer to the struct ab8500
- * @gpadc: Pointer to the struct gpadc
+ * @main_bat_v: ADC channel for the main battery voltage
* @bm: Platform specific battery management information
* @fg_psy: Structure that holds the FG specific battery properties
* @fg_wq: Work queue for running the FG algorithm
@@ -224,7 +224,7 @@ struct ab8500_fg {
struct ab8500_fg_battery_capacity bat_cap;
struct ab8500_fg_avg_cap avg_cap;
struct ab8500 *parent;
- struct ab8500_gpadc *gpadc;
+ struct iio_channel *main_bat_v;
struct abx500_bm_data *bm;
struct power_supply *fg_psy;
struct workqueue_struct *fg_wq;
@@ -829,13 +829,13 @@ exit:
*/
static int ab8500_fg_bat_voltage(struct ab8500_fg *di)
{
- int vbat;
+ int vbat, ret;
static int prev;
- vbat = ab8500_gpadc_convert(di->gpadc, MAIN_BAT_V);
- if (vbat < 0) {
+ ret = iio_read_channel_processed(di->main_bat_v, &vbat);
+ if (ret < 0) {
dev_err(di->dev,
- "%s gpadc conversion failed, using previous value\n",
+ "%s ADC conversion failed, using previous value\n",
__func__);
return prev;
}
@@ -3066,7 +3066,14 @@ static int ab8500_fg_probe(struct platform_device *pdev)
/* get parent data */
di->dev = &pdev->dev;
di->parent = dev_get_drvdata(pdev->dev.parent);
- di->gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
+
+ di->main_bat_v = devm_iio_channel_get(&pdev->dev, "main_bat_v");
+ if (IS_ERR(di->main_bat_v)) {
+ if (PTR_ERR(di->main_bat_v) == -ENODEV)
+ return -EPROBE_DEFER;
+ dev_err(&pdev->dev, "failed to get main battery ADC channel\n");
+ return PTR_ERR(di->main_bat_v);
+ }
psy_cfg.supplied_to = supply_interface;
psy_cfg.num_supplicants = ARRAY_SIZE(supply_interface);
@@ -3151,6 +3158,11 @@ static int ab8500_fg_probe(struct platform_device *pdev)
/* Register primary interrupt handlers */
for (i = 0; i < ARRAY_SIZE(ab8500_fg_irq_th); i++) {
irq = platform_get_irq_byname(pdev, ab8500_fg_irq_th[i].name);
+ if (irq < 0) {
+ ret = irq;
+ goto free_irq_th;
+ }
+
ret = request_irq(irq, ab8500_fg_irq_th[i].isr,
IRQF_SHARED | IRQF_NO_SUSPEND,
ab8500_fg_irq_th[i].name, di);
@@ -3158,7 +3170,7 @@ static int ab8500_fg_probe(struct platform_device *pdev)
if (ret != 0) {
dev_err(di->dev, "failed to request %s IRQ %d: %d\n",
ab8500_fg_irq_th[i].name, irq, ret);
- goto free_irq;
+ goto free_irq_th;
}
dev_dbg(di->dev, "Requested %s IRQ %d: %d\n",
ab8500_fg_irq_th[i].name, irq, ret);
@@ -3166,6 +3178,11 @@ static int ab8500_fg_probe(struct platform_device *pdev)
/* Register threaded interrupt handler */
irq = platform_get_irq_byname(pdev, ab8500_fg_irq_bh[0].name);
+ if (irq < 0) {
+ ret = irq;
+ goto free_irq_th;
+ }
+
ret = request_threaded_irq(irq, NULL, ab8500_fg_irq_bh[0].isr,
IRQF_SHARED | IRQF_NO_SUSPEND | IRQF_ONESHOT,
ab8500_fg_irq_bh[0].name, di);
@@ -3173,7 +3190,7 @@ static int ab8500_fg_probe(struct platform_device *pdev)
if (ret != 0) {
dev_err(di->dev, "failed to request %s IRQ %d: %d\n",
ab8500_fg_irq_bh[0].name, irq, ret);
- goto free_irq;
+ goto free_irq_th;
}
dev_dbg(di->dev, "Requested %s IRQ %d: %d\n",
ab8500_fg_irq_bh[0].name, irq, ret);
@@ -3212,15 +3229,17 @@ static int ab8500_fg_probe(struct platform_device *pdev)
return ret;
free_irq:
- power_supply_unregister(di->fg_psy);
-
/* We also have to free all registered irqs */
- for (i = 0; i < ARRAY_SIZE(ab8500_fg_irq_th); i++) {
+ irq = platform_get_irq_byname(pdev, ab8500_fg_irq_bh[0].name);
+ free_irq(irq, di);
+free_irq_th:
+ while (--i >= 0) {
+ /* Last assignment of i from primary interrupt handlers */
irq = platform_get_irq_byname(pdev, ab8500_fg_irq_th[i].name);
free_irq(irq, di);
}
- irq = platform_get_irq_byname(pdev, ab8500_fg_irq_bh[0].name);
- free_irq(irq, di);
+
+ power_supply_unregister(di->fg_psy);
free_inst_curr_wq:
destroy_workqueue(di->fg_wq);
return ret;
diff --git a/drivers/power/supply/abx500_chargalg.c b/drivers/power/supply/abx500_chargalg.c
index 23757fb10479..e6e37d4f20e4 100644
--- a/drivers/power/supply/abx500_chargalg.c
+++ b/drivers/power/supply/abx500_chargalg.c
@@ -354,13 +354,13 @@ static int abx500_chargalg_check_charger_enable(struct abx500_chargalg *di)
if (di->chg_info.charger_type & USB_CHG) {
return di->usb_chg->ops.check_enable(di->usb_chg,
- di->bm->bat_type[di->bm->batt_id].normal_vol_lvl,
- di->bm->bat_type[di->bm->batt_id].normal_cur_lvl);
+ di->bm->bat_type[di->bm->batt_id].normal_vol_lvl,
+ di->bm->bat_type[di->bm->batt_id].normal_cur_lvl);
} else if ((di->chg_info.charger_type & AC_CHG) &&
!(di->ac_chg->external)) {
return di->ac_chg->ops.check_enable(di->ac_chg,
- di->bm->bat_type[di->bm->batt_id].normal_vol_lvl,
- di->bm->bat_type[di->bm->batt_id].normal_cur_lvl);
+ di->bm->bat_type[di->bm->batt_id].normal_vol_lvl,
+ di->bm->bat_type[di->bm->batt_id].normal_cur_lvl);
}
return 0;
}
diff --git a/drivers/power/supply/axp20x_usb_power.c b/drivers/power/supply/axp20x_usb_power.c
index dc4c316eff81..5f0a5722b19e 100644
--- a/drivers/power/supply/axp20x_usb_power.c
+++ b/drivers/power/supply/axp20x_usb_power.c
@@ -48,6 +48,8 @@
#define AXP20X_VBUS_MON_VBUS_VALID BIT(3)
+#define AXP813_BC_EN BIT(0)
+
/*
* Note do not raise the debounce time, we must report Vusb high within
* 100ms otherwise we get Vbus errors in musb.
@@ -495,6 +497,12 @@ static int axp20x_usb_power_probe(struct platform_device *pdev)
return -EINVAL;
}
+ if (power->axp20x_id == AXP813_ID) {
+ /* Enable USB Battery Charging specification detection */
+ regmap_update_bits(axp20x->regmap, AXP288_BC_GLOBAL,
+ AXP813_BC_EN, AXP813_BC_EN);
+ }
+
psy_cfg.of_node = pdev->dev.of_node;
psy_cfg.drv_data = power;
diff --git a/drivers/power/supply/bd70528-charger.c b/drivers/power/supply/bd70528-charger.c
index 1bb32b7226d7..b8e1ec106627 100644
--- a/drivers/power/supply/bd70528-charger.c
+++ b/drivers/power/supply/bd70528-charger.c
@@ -741,3 +741,4 @@ module_platform_driver(bd70528_power);
MODULE_AUTHOR("Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>");
MODULE_DESCRIPTION("BD70528 power-supply driver");
MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:bd70528-power");
diff --git a/drivers/power/supply/cpcap-battery.c b/drivers/power/supply/cpcap-battery.c
index 61d6447d1966..6e9392901b0a 100644
--- a/drivers/power/supply/cpcap-battery.c
+++ b/drivers/power/supply/cpcap-battery.c
@@ -33,8 +33,6 @@
#include <linux/iio/types.h>
#include <linux/mfd/motorola-cpcap.h>
-#include <asm/div64.h>
-
/*
* Register bit defines for CPCAP_REG_BPEOL. Some of these seem to
* map to MC13783UG.pdf "Table 5-19. Register 13, Power Control 0"
@@ -52,6 +50,26 @@
#define CPCAP_REG_BPEOL_BIT_BATTDETEN BIT(1) /* Enable battery detect */
#define CPCAP_REG_BPEOL_BIT_EOLSEL BIT(0) /* BPDET = 0, EOL = 1 */
+/*
+ * Register bit defines for CPCAP_REG_CCC1. These seem similar to the twl6030
+ * coulomb counter registers rather than the mc13892 registers. Both twl6030
+ * and mc13892 set bits 2 and 1 to reset and clear registers. But mc13892
+ * sets bit 0 to start the coulomb counter while twl6030 sets bit 0 to stop
+ * the coulomb counter like cpcap does. So for now, we use the twl6030 style
+ * naming for the registers.
+ */
+#define CPCAP_REG_CCC1_ACTIVE_MODE1 BIT(4) /* Update rate */
+#define CPCAP_REG_CCC1_ACTIVE_MODE0 BIT(3) /* Update rate */
+#define CPCAP_REG_CCC1_AUTOCLEAR BIT(2) /* Resets sample registers */
+#define CPCAP_REG_CCC1_CAL_EN BIT(1) /* Clears after write in 1s */
+#define CPCAP_REG_CCC1_PAUSE BIT(0) /* Stop counters, allow write */
+#define CPCAP_REG_CCC1_RESET_MASK (CPCAP_REG_CCC1_AUTOCLEAR | \
+ CPCAP_REG_CCC1_CAL_EN)
+
+#define CPCAP_REG_CCCC2_RATE1 BIT(5)
+#define CPCAP_REG_CCCC2_RATE0 BIT(4)
+#define CPCAP_REG_CCCC2_ENABLE BIT(3)
+
#define CPCAP_BATTERY_CC_SAMPLE_PERIOD_MS 250
enum {
@@ -64,6 +82,7 @@ enum {
enum cpcap_battery_irq_action {
CPCAP_BATTERY_IRQ_ACTION_NONE,
+ CPCAP_BATTERY_IRQ_ACTION_CC_CAL_DONE,
CPCAP_BATTERY_IRQ_ACTION_BATTERY_LOW,
CPCAP_BATTERY_IRQ_ACTION_POWEROFF,
};
@@ -76,15 +95,16 @@ struct cpcap_interrupt_desc {
};
struct cpcap_battery_config {
- int ccm;
int cd_factor;
struct power_supply_info info;
+ struct power_supply_battery_info bat;
};
struct cpcap_coulomb_counter_data {
s32 sample; /* 24 or 32 bits */
s32 accumulator;
s16 offset; /* 9 bits */
+ s16 integrator; /* 13 or 16 bits */
};
enum cpcap_battery_state {
@@ -110,6 +130,7 @@ struct cpcap_battery_ddata {
struct power_supply *psy;
struct cpcap_battery_config config;
struct cpcap_battery_state_data state[CPCAP_BATTERY_STATE_NR];
+ u32 cc_lsb; /* μAms per LSB */
atomic_t active;
int status;
u16 vendor;
@@ -217,41 +238,17 @@ static int cpcap_battery_cc_raw_div(struct cpcap_battery_ddata *ddata,
s16 offset, u32 divider)
{
s64 acc;
- u64 tmp;
- int avg_current;
- u32 cc_lsb;
if (!divider)
return 0;
- switch (ddata->vendor) {
- case CPCAP_VENDOR_ST:
- cc_lsb = 95374; /* μAms per LSB */
- break;
- case CPCAP_VENDOR_TI:
- cc_lsb = 91501; /* μAms per LSB */
- break;
- default:
- return -EINVAL;
- }
-
acc = accumulator;
- acc = acc - ((s64)sample * offset);
- cc_lsb = (cc_lsb * ddata->config.cd_factor) / 1000;
+ acc -= (s64)sample * offset;
+ acc *= ddata->cc_lsb;
+ acc *= -1;
+ acc = div_s64(acc, divider);
- if (acc >= 0)
- tmp = acc;
- else
- tmp = acc * -1;
-
- tmp = tmp * cc_lsb;
- do_div(tmp, divider);
- avg_current = tmp;
-
- if (acc >= 0)
- return -avg_current;
- else
- return avg_current;
+ return acc;
}
/* 3600000μAms = 1μAh */
@@ -293,12 +290,13 @@ static int
cpcap_battery_read_accumulated(struct cpcap_battery_ddata *ddata,
struct cpcap_coulomb_counter_data *ccd)
{
- u16 buf[7]; /* CPCAP_REG_CC1 to CCI */
+ u16 buf[7]; /* CPCAP_REG_CCS1 to CCI */
int error;
ccd->sample = 0;
ccd->accumulator = 0;
ccd->offset = 0;
+ ccd->integrator = 0;
/* Read coulomb counter register range */
error = regmap_bulk_read(ddata->reg, CPCAP_REG_CCS1,
@@ -323,6 +321,12 @@ cpcap_battery_read_accumulated(struct cpcap_battery_ddata *ddata,
ccd->offset = buf[4];
ccd->offset = sign_extend32(ccd->offset, 9);
+ /* Integrator register CPCAP_REG_CCI */
+ if (ddata->vendor == CPCAP_VENDOR_TI)
+ ccd->integrator = sign_extend32(buf[6], 13);
+ else
+ ccd->integrator = (s16)buf[6];
+
return cpcap_battery_cc_to_uah(ddata,
ccd->sample,
ccd->accumulator,
@@ -336,31 +340,28 @@ cpcap_battery_read_accumulated(struct cpcap_battery_ddata *ddata,
static int cpcap_battery_cc_get_avg_current(struct cpcap_battery_ddata *ddata)
{
int value, acc, error;
- s32 sample = 1;
+ s32 sample;
s16 offset;
- if (ddata->vendor == CPCAP_VENDOR_ST)
- sample = 4;
-
/* Coulomb counter integrator */
error = regmap_read(ddata->reg, CPCAP_REG_CCI, &value);
if (error)
return error;
- if ((ddata->vendor == CPCAP_VENDOR_TI) && (value > 0x2000))
- value = value | 0xc000;
-
- acc = (s16)value;
+ if (ddata->vendor == CPCAP_VENDOR_TI) {
+ acc = sign_extend32(value, 13);
+ sample = 1;
+ } else {
+ acc = (s16)value;
+ sample = 4;
+ }
- /* Coulomb counter sample time */
+ /* Coulomb counter calibration offset */
error = regmap_read(ddata->reg, CPCAP_REG_CCM, &value);
if (error)
return error;
- if (value < 0x200)
- offset = value;
- else
- offset = value | 0xfc00;
+ offset = sign_extend32(value, 9);
return cpcap_battery_cc_to_ua(ddata, sample, acc, offset);
}
@@ -369,8 +370,8 @@ static bool cpcap_battery_full(struct cpcap_battery_ddata *ddata)
{
struct cpcap_battery_state_data *state = cpcap_battery_latest(ddata);
- /* Basically anything that measures above 4347000 is full */
- if (state->voltage >= (ddata->config.info.voltage_max_design - 4000))
+ if (state->voltage >=
+ (ddata->config.bat.constant_charge_voltage_max_uv - 18000))
return true;
return false;
@@ -417,6 +418,7 @@ static enum power_supply_property cpcap_battery_props[] = {
POWER_SUPPLY_PROP_VOLTAGE_NOW,
POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
+ POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE,
POWER_SUPPLY_PROP_CURRENT_AVG,
POWER_SUPPLY_PROP_CURRENT_NOW,
POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
@@ -475,6 +477,9 @@ static int cpcap_battery_get_property(struct power_supply *psy,
case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
val->intval = ddata->config.info.voltage_min_design;
break;
+ case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
+ val->intval = ddata->config.bat.constant_charge_voltage_max_uv;
+ break;
case POWER_SUPPLY_PROP_CURRENT_AVG:
sample = latest->cc.sample - previous->cc.sample;
if (!sample) {
@@ -540,6 +545,69 @@ static int cpcap_battery_get_property(struct power_supply *psy,
return 0;
}
+static int cpcap_battery_update_charger(struct cpcap_battery_ddata *ddata,
+ int const_charge_voltage)
+{
+ union power_supply_propval prop;
+ union power_supply_propval val;
+ struct power_supply *charger;
+ int error;
+
+ charger = power_supply_get_by_name("usb");
+ if (!charger)
+ return -ENODEV;
+
+ error = power_supply_get_property(charger,
+ POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE,
+ &prop);
+ if (error)
+ return error;
+
+ /* Allow charger const voltage lower than battery const voltage */
+ if (const_charge_voltage > prop.intval)
+ return 0;
+
+ val.intval = const_charge_voltage;
+
+ return power_supply_set_property(charger,
+ POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE,
+ &val);
+}
+
+static int cpcap_battery_set_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ const union power_supply_propval *val)
+{
+ struct cpcap_battery_ddata *ddata = power_supply_get_drvdata(psy);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
+ if (val->intval < ddata->config.info.voltage_min_design)
+ return -EINVAL;
+ if (val->intval > ddata->config.info.voltage_max_design)
+ return -EINVAL;
+
+ ddata->config.bat.constant_charge_voltage_max_uv = val->intval;
+
+ return cpcap_battery_update_charger(ddata, val->intval);
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int cpcap_battery_property_is_writeable(struct power_supply *psy,
+ enum power_supply_property psp)
+{
+ switch (psp) {
+ case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
+ return 1;
+ default:
+ return 0;
+ }
+}
+
static irqreturn_t cpcap_battery_irq_thread(int irq, void *data)
{
struct cpcap_battery_ddata *ddata = data;
@@ -560,14 +628,19 @@ static irqreturn_t cpcap_battery_irq_thread(int irq, void *data)
latest = cpcap_battery_latest(ddata);
switch (d->action) {
+ case CPCAP_BATTERY_IRQ_ACTION_CC_CAL_DONE:
+ dev_info(ddata->dev, "Coulomb counter calibration done\n");
+ break;
case CPCAP_BATTERY_IRQ_ACTION_BATTERY_LOW:
if (latest->current_ua >= 0)
- dev_warn(ddata->dev, "Battery low at 3.3V!\n");
+ dev_warn(ddata->dev, "Battery low at %imV!\n",
+ latest->voltage / 1000);
break;
case CPCAP_BATTERY_IRQ_ACTION_POWEROFF:
- if (latest->current_ua >= 0) {
+ if (latest->current_ua >= 0 && latest->voltage <= 3200000) {
dev_emerg(ddata->dev,
- "Battery empty at 3.1V, powering off\n");
+ "Battery empty at %imV, powering off\n",
+ latest->voltage / 1000);
orderly_poweroff(true);
}
break;
@@ -609,7 +682,9 @@ static int cpcap_battery_init_irq(struct platform_device *pdev,
d->name = name;
d->irq = irq;
- if (!strncmp(name, "lowbph", 6))
+ if (!strncmp(name, "cccal", 5))
+ d->action = CPCAP_BATTERY_IRQ_ACTION_CC_CAL_DONE;
+ else if (!strncmp(name, "lowbph", 6))
d->action = CPCAP_BATTERY_IRQ_ACTION_BATTERY_LOW;
else if (!strncmp(name, "lowbpl", 6))
d->action = CPCAP_BATTERY_IRQ_ACTION_POWEROFF;
@@ -635,6 +710,9 @@ static int cpcap_battery_init_interrupts(struct platform_device *pdev,
return error;
}
+ /* Enable calibration interrupt if already available in dts */
+ cpcap_battery_init_irq(pdev, ddata, "cccal");
+
/* Enable low battery interrupts for 3.3V high and 3.1V low */
error = regmap_update_bits(ddata->reg, CPCAP_REG_BPEOL,
0xffff,
@@ -676,6 +754,60 @@ out_err:
return error;
}
+/* Calibrate coulomb counter */
+static int cpcap_battery_calibrate(struct cpcap_battery_ddata *ddata)
+{
+ int error, ccc1, value;
+ unsigned long timeout;
+
+ error = regmap_read(ddata->reg, CPCAP_REG_CCC1, &ccc1);
+ if (error)
+ return error;
+
+ timeout = jiffies + msecs_to_jiffies(6000);
+
+ /* Start calibration */
+ error = regmap_update_bits(ddata->reg, CPCAP_REG_CCC1,
+ 0xffff,
+ CPCAP_REG_CCC1_CAL_EN);
+ if (error)
+ goto restore;
+
+ while (time_before(jiffies, timeout)) {
+ error = regmap_read(ddata->reg, CPCAP_REG_CCC1, &value);
+ if (error)
+ goto restore;
+
+ if (!(value & CPCAP_REG_CCC1_CAL_EN))
+ break;
+
+ error = regmap_read(ddata->reg, CPCAP_REG_CCM, &value);
+ if (error)
+ goto restore;
+
+ msleep(300);
+ }
+
+ /* Read calibration offset from CCM */
+ error = regmap_read(ddata->reg, CPCAP_REG_CCM, &value);
+ if (error)
+ goto restore;
+
+ dev_info(ddata->dev, "calibration done: 0x%04x\n", value);
+
+restore:
+ if (error)
+ dev_err(ddata->dev, "%s: error %i\n", __func__, error);
+
+ error = regmap_update_bits(ddata->reg, CPCAP_REG_CCC1,
+ 0xffff, ccc1);
+ if (error)
+ dev_err(ddata->dev, "%s: restore error %i\n",
+ __func__, error);
+
+ return error;
+}
+
/*
* Based on the values from Motorola mapphone Linux kernel. In the
* the Motorola mapphone Linux kernel tree the value for pm_cd_factor
@@ -687,12 +819,12 @@ out_err:
* at 3078000. The device will die around 2743000.
*/
static const struct cpcap_battery_config cpcap_battery_default_data = {
- .ccm = 0x3ff,
.cd_factor = 0x3cc,
.info.technology = POWER_SUPPLY_TECHNOLOGY_LION,
.info.voltage_max_design = 4351000,
.info.voltage_min_design = 3100000,
.info.charge_full_design = 1740000,
+ .bat.constant_charge_voltage_max_uv = 4200000,
};
#ifdef CONFIG_OF
@@ -741,12 +873,19 @@ static int cpcap_battery_probe(struct platform_device *pdev)
if (error)
return error;
- platform_set_drvdata(pdev, ddata);
+ switch (ddata->vendor) {
+ case CPCAP_VENDOR_ST:
+ ddata->cc_lsb = 95374; /* μAms per LSB */
+ break;
+ case CPCAP_VENDOR_TI:
+ ddata->cc_lsb = 91501; /* μAms per LSB */
+ break;
+ default:
+ return -EINVAL;
+ }
+ ddata->cc_lsb = (ddata->cc_lsb * ddata->config.cd_factor) / 1000;
- error = regmap_update_bits(ddata->reg, CPCAP_REG_CCM,
- 0xffff, ddata->config.ccm);
- if (error)
- return error;
+ platform_set_drvdata(pdev, ddata);
error = cpcap_battery_init_interrupts(pdev, ddata);
if (error)
@@ -760,11 +899,13 @@ static int cpcap_battery_probe(struct platform_device *pdev)
if (!psy_desc)
return -ENOMEM;
- psy_desc->name = "battery",
- psy_desc->type = POWER_SUPPLY_TYPE_BATTERY,
- psy_desc->properties = cpcap_battery_props,
- psy_desc->num_properties = ARRAY_SIZE(cpcap_battery_props),
- psy_desc->get_property = cpcap_battery_get_property,
+ psy_desc->name = "battery";
+ psy_desc->type = POWER_SUPPLY_TYPE_BATTERY;
+ psy_desc->properties = cpcap_battery_props;
+ psy_desc->num_properties = ARRAY_SIZE(cpcap_battery_props);
+ psy_desc->get_property = cpcap_battery_get_property;
+ psy_desc->set_property = cpcap_battery_set_property;
+ psy_desc->property_is_writeable = cpcap_battery_property_is_writeable;
psy_cfg.of_node = pdev->dev.of_node;
psy_cfg.drv_data = ddata;
@@ -779,6 +920,10 @@ static int cpcap_battery_probe(struct platform_device *pdev)
atomic_set(&ddata->active, 1);
+ error = cpcap_battery_calibrate(ddata);
+ if (error)
+ return error;
+
return 0;
}
diff --git a/drivers/power/supply/cpcap-charger.c b/drivers/power/supply/cpcap-charger.c
index 74258c7fe17d..c0d452e3dc8b 100644
--- a/drivers/power/supply/cpcap-charger.c
+++ b/drivers/power/supply/cpcap-charger.c
@@ -120,6 +120,13 @@ enum {
CPCAP_CHARGER_IIO_NR,
};
+enum {
+ CPCAP_CHARGER_DISCONNECTED,
+ CPCAP_CHARGER_DETECTING,
+ CPCAP_CHARGER_CHARGING,
+ CPCAP_CHARGER_DONE,
+};
+
struct cpcap_charger_ddata {
struct device *dev;
struct regmap *reg;
@@ -138,6 +145,8 @@ struct cpcap_charger_ddata {
atomic_t active;
int status;
+ int state;
+ int voltage;
};
struct cpcap_interrupt_desc {
@@ -153,6 +162,7 @@ struct cpcap_charger_ints_state {
bool chrg_se1b;
bool rvrs_mode;
+ bool chrgcurr2;
bool chrgcurr1;
bool vbusvld;
@@ -162,24 +172,26 @@ struct cpcap_charger_ints_state {
static enum power_supply_property cpcap_charger_props[] = {
POWER_SUPPLY_PROP_STATUS,
POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE,
POWER_SUPPLY_PROP_VOLTAGE_NOW,
POWER_SUPPLY_PROP_CURRENT_NOW,
};
+/* No battery always shows temperature of -40000 */
static bool cpcap_charger_battery_found(struct cpcap_charger_ddata *ddata)
{
struct iio_channel *channel;
- int error, value;
+ int error, temperature;
channel = ddata->channels[CPCAP_CHARGER_IIO_BATTDET];
- error = iio_read_channel_raw(channel, &value);
+ error = iio_read_channel_processed(channel, &temperature);
if (error < 0) {
dev_warn(ddata->dev, "%s failed: %i\n", __func__, error);
return false;
}
- return value == 1;
+ return temperature > -20000 && temperature < 60000;
}
static int cpcap_charger_get_charge_voltage(struct cpcap_charger_ddata *ddata)
@@ -224,6 +236,9 @@ static int cpcap_charger_get_property(struct power_supply *psy,
case POWER_SUPPLY_PROP_STATUS:
val->intval = ddata->status;
break;
+ case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
+ val->intval = ddata->voltage;
+ break;
case POWER_SUPPLY_PROP_VOLTAGE_NOW:
if (ddata->status == POWER_SUPPLY_STATUS_CHARGING)
val->intval = cpcap_charger_get_charge_voltage(ddata) *
@@ -248,6 +263,83 @@ static int cpcap_charger_get_property(struct power_supply *psy,
return 0;
}
+static int cpcap_charger_match_voltage(int voltage)
+{
+ switch (voltage) {
+ case 0 ... 4100000 - 1: return 3800000;
+ case 4100000 ... 4120000 - 1: return 4100000;
+ case 4120000 ... 4150000 - 1: return 4120000;
+ case 4150000 ... 4170000 - 1: return 4150000;
+ case 4170000 ... 4200000 - 1: return 4170000;
+ case 4200000 ... 4230000 - 1: return 4200000;
+ case 4230000 ... 4250000 - 1: return 4230000;
+ case 4250000 ... 4270000 - 1: return 4250000;
+ case 4270000 ... 4300000 - 1: return 4270000;
+ case 4300000 ... 4330000 - 1: return 4300000;
+ case 4330000 ... 4350000 - 1: return 4330000;
+ case 4350000 ... 4380000 - 1: return 4350000;
+ case 4380000 ... 4400000 - 1: return 4380000;
+ case 4400000 ... 4420000 - 1: return 4400000;
+ case 4420000 ... 4440000 - 1: return 4420000;
+ case 4440000: return 4440000;
+ default: return 0;
+ }
+}
+
+static int
+cpcap_charger_get_bat_const_charge_voltage(struct cpcap_charger_ddata *ddata)
+{
+ union power_supply_propval prop;
+ struct power_supply *battery;
+ int voltage = ddata->voltage;
+ int error;
+
+ battery = power_supply_get_by_name("battery");
+ if (battery) {
+ error = power_supply_get_property(battery,
+ POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE,
+ &prop);
+ if (!error)
+ voltage = prop.intval;
+ }
+
+ return voltage;
+}
+
+static int cpcap_charger_set_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ const union power_supply_propval *val)
+{
+ struct cpcap_charger_ddata *ddata = dev_get_drvdata(psy->dev.parent);
+ int voltage, batvolt;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
+ voltage = cpcap_charger_match_voltage(val->intval);
+ batvolt = cpcap_charger_get_bat_const_charge_voltage(ddata);
+ if (voltage > batvolt)
+ voltage = batvolt;
+ ddata->voltage = voltage;
+ schedule_delayed_work(&ddata->detect_work, 0);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int cpcap_charger_property_is_writeable(struct power_supply *psy,
+ enum power_supply_property psp)
+{
+ switch (psp) {
+ case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
+ return 1;
+ default:
+ return 0;
+ }
+}
+
static void cpcap_charger_set_cable_path(struct cpcap_charger_ddata *ddata,
bool enabled)
{
@@ -422,6 +514,7 @@ static int cpcap_charger_get_ints_state(struct cpcap_charger_ddata *ddata,
s->chrg_se1b = val & BIT(13);
s->rvrs_mode = val & BIT(6);
+ s->chrgcurr2 = val & BIT(5);
s->chrgcurr1 = val & BIT(4);
s->vbusvld = val & BIT(3);
@@ -434,6 +527,79 @@ static int cpcap_charger_get_ints_state(struct cpcap_charger_ddata *ddata,
return 0;
}
+static void cpcap_charger_update_state(struct cpcap_charger_ddata *ddata,
+ int state)
+{
+ const char *status;
+
+ if (state > CPCAP_CHARGER_DONE) {
+ dev_warn(ddata->dev, "unknown state: %i\n", state);
+
+ return;
+ }
+
+ ddata->state = state;
+
+ switch (state) {
+ case CPCAP_CHARGER_DISCONNECTED:
+ status = "DISCONNECTED";
+ break;
+ case CPCAP_CHARGER_DETECTING:
+ status = "DETECTING";
+ break;
+ case CPCAP_CHARGER_CHARGING:
+ status = "CHARGING";
+ break;
+ case CPCAP_CHARGER_DONE:
+ status = "DONE";
+ break;
+ default:
+ return;
+ }
+
+ dev_dbg(ddata->dev, "state: %s\n", status);
+}
+
+static int cpcap_charger_voltage_to_regval(int voltage)
+{
+ int offset;
+
+ switch (voltage) {
+ case 0 ... 4100000 - 1:
+ return 0;
+ case 4100000 ... 4200000 - 1:
+ offset = 1;
+ break;
+ case 4200000 ... 4300000 - 1:
+ offset = 0;
+ break;
+ case 4300000 ... 4380000 - 1:
+ offset = -1;
+ break;
+ case 4380000 ... 4440000:
+ offset = -2;
+ break;
+ default:
+ return 0;
+ }
+
+ return ((voltage - 4100000) / 20000) + offset;
+}
+
+static void cpcap_charger_disconnect(struct cpcap_charger_ddata *ddata,
+ int state, unsigned long delay)
+{
+ int error;
+
+ error = cpcap_charger_set_state(ddata, 0, 0, 0);
+ if (error)
+ return;
+
+ cpcap_charger_update_state(ddata, state);
+ power_supply_changed(ddata->usb);
+ schedule_delayed_work(&ddata->detect_work, delay);
+}
+
static void cpcap_usb_detect(struct work_struct *work)
{
struct cpcap_charger_ddata *ddata;
@@ -447,24 +613,67 @@ static void cpcap_usb_detect(struct work_struct *work)
if (error)
return;
+ /* Just init the state if a charger is connected with no chrg_det set */
+ if (!s.chrg_det && s.chrgcurr1 && s.vbusvld) {
+ cpcap_charger_update_state(ddata, CPCAP_CHARGER_DETECTING);
+
+ return;
+ }
+
+ /*
+ * If battery voltage is higher than charge voltage, it may have been
+ * charged to 4.35V by Android. Try again in 10 minutes.
+ */
+ if (cpcap_charger_get_charge_voltage(ddata) > ddata->voltage) {
+ cpcap_charger_disconnect(ddata, CPCAP_CHARGER_DETECTING,
+ HZ * 60 * 10);
+
+ return;
+ }
+
+ /* Throttle chrgcurr2 interrupt for charger done and retry */
+ switch (ddata->state) {
+ case CPCAP_CHARGER_CHARGING:
+ if (s.chrgcurr2)
+ break;
+ if (s.chrgcurr1 && s.vbusvld) {
+ cpcap_charger_disconnect(ddata, CPCAP_CHARGER_DONE,
+ HZ * 5);
+ return;
+ }
+ break;
+ case CPCAP_CHARGER_DONE:
+ if (!s.chrgcurr2)
+ break;
+ cpcap_charger_disconnect(ddata, CPCAP_CHARGER_DETECTING,
+ HZ * 5);
+ return;
+ default:
+ break;
+ }
+
if (!ddata->feeding_vbus && cpcap_charger_vbus_valid(ddata) &&
s.chrgcurr1) {
int max_current;
+ int vchrg;
if (cpcap_charger_battery_found(ddata))
max_current = CPCAP_REG_CRM_ICHRG_1A596;
else
max_current = CPCAP_REG_CRM_ICHRG_0A532;
+ vchrg = cpcap_charger_voltage_to_regval(ddata->voltage);
error = cpcap_charger_set_state(ddata,
- CPCAP_REG_CRM_VCHRG_4V35,
+ CPCAP_REG_CRM_VCHRG(vchrg),
max_current, 0);
if (error)
goto out_err;
+ cpcap_charger_update_state(ddata, CPCAP_CHARGER_CHARGING);
} else {
error = cpcap_charger_set_state(ddata, 0, 0, 0);
if (error)
goto out_err;
+ cpcap_charger_update_state(ddata, CPCAP_CHARGER_DISCONNECTED);
}
power_supply_changed(ddata->usb);
@@ -524,7 +733,7 @@ static const char * const cpcap_charger_irqs[] = {
"chrg_det", "rvrs_chrg",
/* REG_INT1 */
- "chrg_se1b", "se0conn", "rvrs_mode", "chrgcurr1", "vbusvld",
+ "chrg_se1b", "se0conn", "rvrs_mode", "chrgcurr2", "chrgcurr1", "vbusvld",
/* REG_INT_3 */
"battdetb",
@@ -596,6 +805,8 @@ static const struct power_supply_desc cpcap_charger_usb_desc = {
.properties = cpcap_charger_props,
.num_properties = ARRAY_SIZE(cpcap_charger_props),
.get_property = cpcap_charger_get_property,
+ .set_property = cpcap_charger_set_property,
+ .property_is_writeable = cpcap_charger_property_is_writeable,
};
#ifdef CONFIG_OF
@@ -625,6 +836,7 @@ static int cpcap_charger_probe(struct platform_device *pdev)
return -ENOMEM;
ddata->dev = &pdev->dev;
+ ddata->voltage = 4200000;
ddata->reg = dev_get_regmap(ddata->dev->parent, NULL);
if (!ddata->reg)
diff --git a/drivers/power/supply/test_power.c b/drivers/power/supply/test_power.c
index c3cad2b6daba..65c23ef6408d 100644
--- a/drivers/power/supply/test_power.c
+++ b/drivers/power/supply/test_power.c
@@ -33,6 +33,8 @@ static int battery_present = 1; /* true */
static int battery_technology = POWER_SUPPLY_TECHNOLOGY_LION;
static int battery_capacity = 50;
static int battery_voltage = 3300;
+static int battery_charge_counter = -1000;
+static int battery_current = 1600;
static bool module_initialized;
@@ -100,6 +102,9 @@ static int test_power_get_battery_property(struct power_supply *psy,
case POWER_SUPPLY_PROP_CHARGE_NOW:
val->intval = battery_capacity;
break;
+ case POWER_SUPPLY_PROP_CHARGE_COUNTER:
+ val->intval = battery_charge_counter;
+ break;
case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
case POWER_SUPPLY_PROP_CHARGE_FULL:
val->intval = 100;
@@ -114,6 +119,10 @@ static int test_power_get_battery_property(struct power_supply *psy,
case POWER_SUPPLY_PROP_VOLTAGE_NOW:
val->intval = battery_voltage;
break;
+ case POWER_SUPPLY_PROP_CURRENT_AVG:
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ val->intval = battery_current;
+ break;
default:
pr_info("%s: some properties deliberately report errors.\n",
__func__);
@@ -135,6 +144,7 @@ static enum power_supply_property test_power_battery_props[] = {
POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
POWER_SUPPLY_PROP_CHARGE_FULL,
POWER_SUPPLY_PROP_CHARGE_NOW,
+ POWER_SUPPLY_PROP_CHARGE_COUNTER,
POWER_SUPPLY_PROP_CAPACITY,
POWER_SUPPLY_PROP_CAPACITY_LEVEL,
POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
@@ -144,6 +154,8 @@ static enum power_supply_property test_power_battery_props[] = {
POWER_SUPPLY_PROP_SERIAL_NUMBER,
POWER_SUPPLY_PROP_TEMP,
POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_CURRENT_AVG,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
};
static char *test_power_ac_supplied_to[] = {
@@ -447,6 +459,36 @@ static int param_set_battery_voltage(const char *key,
#define param_get_battery_voltage param_get_int
+static int param_set_battery_charge_counter(const char *key,
+ const struct kernel_param *kp)
+{
+ int tmp;
+
+ if (1 != sscanf(key, "%d", &tmp))
+ return -EINVAL;
+
+ battery_charge_counter = tmp;
+ signal_power_supply_changed(test_power_supplies[TEST_BATTERY]);
+ return 0;
+}
+
+#define param_get_battery_charge_counter param_get_int
+
+static int param_set_battery_current(const char *key,
+ const struct kernel_param *kp)
+{
+ int tmp;
+
+ if (1 != sscanf(key, "%d", &tmp))
+ return -EINVAL;
+
+ battery_current = tmp;
+ signal_power_supply_changed(test_power_supplies[TEST_BATTERY]);
+ return 0;
+}
+
+#define param_get_battery_current param_get_int
+
static const struct kernel_param_ops param_ops_ac_online = {
.set = param_set_ac_online,
.get = param_get_ac_online,
@@ -487,6 +529,16 @@ static const struct kernel_param_ops param_ops_battery_voltage = {
.get = param_get_battery_voltage,
};
+static const struct kernel_param_ops param_ops_battery_charge_counter = {
+ .set = param_set_battery_charge_counter,
+ .get = param_get_battery_charge_counter,
+};
+
+static const struct kernel_param_ops param_ops_battery_current = {
+ .set = param_set_battery_current,
+ .get = param_get_battery_current,
+};
+
#define param_check_ac_online(name, p) __param_check(name, p, void);
#define param_check_usb_online(name, p) __param_check(name, p, void);
#define param_check_battery_status(name, p) __param_check(name, p, void);
@@ -495,6 +547,8 @@ static const struct kernel_param_ops param_ops_battery_voltage = {
#define param_check_battery_health(name, p) __param_check(name, p, void);
#define param_check_battery_capacity(name, p) __param_check(name, p, void);
#define param_check_battery_voltage(name, p) __param_check(name, p, void);
+#define param_check_battery_charge_counter(name, p) __param_check(name, p, void);
+#define param_check_battery_current(name, p) __param_check(name, p, void);
module_param(ac_online, ac_online, 0644);
@@ -525,6 +579,13 @@ MODULE_PARM_DESC(battery_capacity, "battery capacity (percentage)");
module_param(battery_voltage, battery_voltage, 0644);
MODULE_PARM_DESC(battery_voltage, "battery voltage (millivolts)");
+module_param(battery_charge_counter, battery_charge_counter, 0644);
+MODULE_PARM_DESC(battery_charge_counter,
+ "battery charge counter (microampere-hours)");
+
+module_param(battery_current, battery_current, 0644);
+MODULE_PARM_DESC(battery_current, "battery current (milliampere)");
+
MODULE_DESCRIPTION("Power supply driver for testing");
MODULE_AUTHOR("Anton Vorontsov <cbouatmailru@gmail.com>");
MODULE_LICENSE("GPL");
diff --git a/include/linux/mfd/abx500/ab8500-gpadc.h b/include/linux/mfd/abx500/ab8500-gpadc.h
deleted file mode 100644
index 836c944abe2e..000000000000
--- a/include/linux/mfd/abx500/ab8500-gpadc.h
+++ /dev/null
@@ -1,75 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Copyright (C) 2010 ST-Ericsson SA
- *
- * Author: Arun R Murthy <arun.murthy@stericsson.com>
- * Author: Daniel Willerud <daniel.willerud@stericsson.com>
- * Author: M'boumba Cedric Madianga <cedric.madianga@stericsson.com>
- */
-
-#ifndef _AB8500_GPADC_H
-#define _AB8500_GPADC_H
-
-/* GPADC source: From datasheet(ADCSwSel[4:0] in GPADCCtrl2
- * and ADCHwSel[4:0] in GPADCCtrl3 ) */
-#define BAT_CTRL 0x01
-#define BTEMP_BALL 0x02
-#define MAIN_CHARGER_V 0x03
-#define ACC_DETECT1 0x04
-#define ACC_DETECT2 0x05
-#define ADC_AUX1 0x06
-#define ADC_AUX2 0x07
-#define MAIN_BAT_V 0x08
-#define VBUS_V 0x09
-#define MAIN_CHARGER_C 0x0A
-#define USB_CHARGER_C 0x0B
-#define BK_BAT_V 0x0C
-#define DIE_TEMP 0x0D
-#define USB_ID 0x0E
-#define XTAL_TEMP 0x12
-#define VBAT_TRUE_MEAS 0x13
-#define BAT_CTRL_AND_IBAT 0x1C
-#define VBAT_MEAS_AND_IBAT 0x1D
-#define VBAT_TRUE_MEAS_AND_IBAT 0x1E
-#define BAT_TEMP_AND_IBAT 0x1F
-
-/* Virtual channel used only for ibat convertion to ampere
- * Battery current conversion (ibat) cannot be requested as a single conversion
- * but it is always in combination with other input requests
- */
-#define IBAT_VIRTUAL_CHANNEL 0xFF
-
-#define SAMPLE_1 1
-#define SAMPLE_4 4
-#define SAMPLE_8 8
-#define SAMPLE_16 16
-#define RISING_EDGE 0
-#define FALLING_EDGE 1
-
-/* Arbitrary ADC conversion type constants */
-#define ADC_SW 0
-#define ADC_HW 1
-
-struct ab8500_gpadc;
-
-struct ab8500_gpadc *ab8500_gpadc_get(char *name);
-int ab8500_gpadc_sw_hw_convert(struct ab8500_gpadc *gpadc, u8 channel,
- u8 avg_sample, u8 trig_edge, u8 trig_timer, u8 conv_type);
-static inline int ab8500_gpadc_convert(struct ab8500_gpadc *gpadc, u8 channel)
-{
- return ab8500_gpadc_sw_hw_convert(gpadc, channel,
- SAMPLE_16, 0, 0, ADC_SW);
-}
-
-int ab8500_gpadc_read_raw(struct ab8500_gpadc *gpadc, u8 channel,
- u8 avg_sample, u8 trig_edge, u8 trig_timer, u8 conv_type);
-int ab8500_gpadc_double_read_raw(struct ab8500_gpadc *gpadc, u8 channel,
- u8 avg_sample, u8 trig_edge, u8 trig_timer, u8 conv_type,
- int *ibat);
-int ab8500_gpadc_ad_to_voltage(struct ab8500_gpadc *gpadc,
- u8 channel, int ad_value);
-void ab8540_gpadc_get_otp(struct ab8500_gpadc *gpadc,
- u16 *vmain_l, u16 *vmain_h, u16 *btemp_l, u16 *btemp_h,
- u16 *vbat_l, u16 *vbat_h, u16 *ibat_l, u16 *ibat_h);
-
-#endif /* _AB8500_GPADC_H */