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authorMauro Carvalho Chehab <mchehab@redhat.com>2013-04-25 17:26:43 +0400
committerMauro Carvalho Chehab <mchehab@redhat.com>2013-04-25 17:26:43 +0400
commit966a1601877c3d29065ab2dde838cdae16ccc099 (patch)
tree2f07818cf4f093e78c05a7c004d15ec5c283b1d1
parentcfc3d6c44470c5509f1e8efb1577b49dbaeeb2da (diff)
parenta9dc73e2952d76ed7961aa12b182c9a95c0be8dd (diff)
downloadlinux-966a1601877c3d29065ab2dde838cdae16ccc099.tar.xz
Merge branch 'topic/si476x' into patchwork
* topic/si476x: Revert "[media] mfd: Add chip properties handling code for SI476X MFD" Revert "[media] mfd: Add the main bulk of core driver for SI476x code" Revert "[media] mfd: Add commands abstraction layer for SI476X MFD" [media] v4l2: Add a V4L2 driver for SI476X MFD
-rw-r--r--Documentation/video4linux/si476x.txt187
-rw-r--r--drivers/media/radio/Kconfig16
-rw-r--r--drivers/media/radio/Makefile1
-rw-r--r--drivers/media/radio/radio-si476x.c1599
-rw-r--r--drivers/mfd/si476x-cmd.c1554
-rw-r--r--drivers/mfd/si476x-i2c.c886
-rw-r--r--drivers/mfd/si476x-prop.c242
-rw-r--r--include/media/si476x.h37
8 files changed, 1840 insertions, 2682 deletions
diff --git a/Documentation/video4linux/si476x.txt b/Documentation/video4linux/si476x.txt
new file mode 100644
index 000000000000..d1a08db2cbd9
--- /dev/null
+++ b/Documentation/video4linux/si476x.txt
@@ -0,0 +1,187 @@
+SI476x Driver Readme
+------------------------------------------------
+ Copyright (C) 2013 Andrey Smirnov <andrew.smirnov@gmail.com>
+
+TODO for the driver
+------------------------------
+
+- According to the SiLabs' datasheet it is possible to update the
+ firmware of the radio chip in the run-time, thus bringing it to the
+ most recent version. Unfortunately I couldn't find any mentioning of
+ the said firmware update for the old chips that I tested the driver
+ against, so for chips like that the driver only exposes the old
+ functionality.
+
+
+Parameters exposed over debugfs
+-------------------------------
+SI476x allow user to get multiple characteristics that can be very
+useful for EoL testing/RF performance estimation, parameters that have
+very little to do with V4L2 subsystem. Such parameters are exposed via
+debugfs and can be accessed via regular file I/O operations.
+
+The drivers exposes following files:
+
+* /sys/kernel/debug/<device-name>/acf
+ This file contains ACF(Automatically Controlled Features) status
+ information. The contents of the file is binary data of the
+ following layout:
+
+ Offset | Name | Description
+ ====================================================================
+ 0x00 | blend_int | Flag, set when stereo separation has
+ | | crossed below the blend threshold
+ --------------------------------------------------------------------
+ 0x01 | hblend_int | Flag, set when HiBlend cutoff
+ | | frequency is lower than threshold
+ --------------------------------------------------------------------
+ 0x02 | hicut_int | Flag, set when HiCut cutoff
+ | | frequency is lower than threshold
+ --------------------------------------------------------------------
+ 0x03 | chbw_int | Flag, set when channel filter
+ | | bandwidth is less than threshold
+ --------------------------------------------------------------------
+ 0x04 | softmute_int | Flag indicating that softmute
+ | | attenuation has increased above
+ | | softmute threshold
+ --------------------------------------------------------------------
+ 0x05 | smute | 0 - Audio is not soft muted
+ | | 1 - Audio is soft muted
+ --------------------------------------------------------------------
+ 0x06 | smattn | Soft mute attenuation level in dB
+ --------------------------------------------------------------------
+ 0x07 | chbw | Channel filter bandwidth in kHz
+ --------------------------------------------------------------------
+ 0x08 | hicut | HiCut cutoff frequency in units of
+ | | 100Hz
+ --------------------------------------------------------------------
+ 0x09 | hiblend | HiBlend cutoff frequency in units
+ | | of 100 Hz
+ --------------------------------------------------------------------
+ 0x10 | pilot | 0 - Stereo pilot is not present
+ | | 1 - Stereo pilot is present
+ --------------------------------------------------------------------
+ 0x11 | stblend | Stereo blend in %
+ --------------------------------------------------------------------
+
+
+* /sys/kernel/debug/<device-name>/rds_blckcnt
+ This file contains statistics about RDS receptions. It's binary data
+ has the following layout:
+
+ Offset | Name | Description
+ ====================================================================
+ 0x00 | expected | Number of expected RDS blocks
+ --------------------------------------------------------------------
+ 0x02 | received | Number of received RDS blocks
+ --------------------------------------------------------------------
+ 0x04 | uncorrectable | Number of uncorrectable RDS blocks
+ --------------------------------------------------------------------
+
+* /sys/kernel/debug/<device-name>/agc
+ This file contains information about parameters pertaining to
+ AGC(Automatic Gain Control)
+
+ The layout is:
+ Offset | Name | Description
+ ====================================================================
+ 0x00 | mxhi | 0 - FM Mixer PD high threshold is
+ | | not tripped
+ | | 1 - FM Mixer PD high threshold is
+ | | tripped
+ --------------------------------------------------------------------
+ 0x01 | mxlo | ditto for FM Mixer PD low
+ --------------------------------------------------------------------
+ 0x02 | lnahi | ditto for FM LNA PD high
+ --------------------------------------------------------------------
+ 0x03 | lnalo | ditto for FM LNA PD low
+ --------------------------------------------------------------------
+ 0x04 | fmagc1 | FMAGC1 attenuator resistance
+ | | (see datasheet for more detail)
+ --------------------------------------------------------------------
+ 0x05 | fmagc2 | ditto for FMAGC2
+ --------------------------------------------------------------------
+ 0x06 | pgagain | PGA gain in dB
+ --------------------------------------------------------------------
+ 0x07 | fmwblang | FM/WB LNA Gain in dB
+ --------------------------------------------------------------------
+
+* /sys/kernel/debug/<device-name>/rsq
+ This file contains information about parameters pertaining to
+ RSQ(Received Signal Quality)
+
+ The layout is:
+ Offset | Name | Description
+ ====================================================================
+ 0x00 | multhint | 0 - multipath value has not crossed
+ | | the Multipath high threshold
+ | | 1 - multipath value has crossed
+ | | the Multipath high threshold
+ --------------------------------------------------------------------
+ 0x01 | multlint | ditto for Multipath low threshold
+ --------------------------------------------------------------------
+ 0x02 | snrhint | 0 - received signal's SNR has not
+ | | crossed high threshold
+ | | 1 - received signal's SNR has
+ | | crossed high threshold
+ --------------------------------------------------------------------
+ 0x03 | snrlint | ditto for low threshold
+ --------------------------------------------------------------------
+ 0x04 | rssihint | ditto for RSSI high threshold
+ --------------------------------------------------------------------
+ 0x05 | rssilint | ditto for RSSI low threshold
+ --------------------------------------------------------------------
+ 0x06 | bltf | Flag indicating if seek command
+ | | reached/wrapped seek band limit
+ --------------------------------------------------------------------
+ 0x07 | snr_ready | Indicates that SNR metrics is ready
+ --------------------------------------------------------------------
+ 0x08 | rssiready | ditto for RSSI metrics
+ --------------------------------------------------------------------
+ 0x09 | injside | 0 - Low-side injection is being used
+ | | 1 - High-side injection is used
+ --------------------------------------------------------------------
+ 0x10 | afcrl | Flag indicating if AFC rails
+ --------------------------------------------------------------------
+ 0x11 | valid | Flag indicating if channel is valid
+ --------------------------------------------------------------------
+ 0x12 | readfreq | Current tuned frequency
+ --------------------------------------------------------------------
+ 0x14 | freqoff | Singed frequency offset in units of
+ | | 2ppm
+ --------------------------------------------------------------------
+ 0x15 | rssi | Signed value of RSSI in dBuV
+ --------------------------------------------------------------------
+ 0x16 | snr | Signed RF SNR in dB
+ --------------------------------------------------------------------
+ 0x17 | issi | Signed Image Strength Signal
+ | | indicator
+ --------------------------------------------------------------------
+ 0x18 | lassi | Signed Low side adjacent Channel
+ | | Strength indicator
+ --------------------------------------------------------------------
+ 0x19 | hassi | ditto fpr High side
+ --------------------------------------------------------------------
+ 0x20 | mult | Multipath indicator
+ --------------------------------------------------------------------
+ 0x21 | dev | Frequency deviation
+ --------------------------------------------------------------------
+ 0x24 | assi | Adjascent channel SSI
+ --------------------------------------------------------------------
+ 0x25 | usn | Ultrasonic noise indicator
+ --------------------------------------------------------------------
+ 0x26 | pilotdev | Pilot deviation in units of 100 Hz
+ --------------------------------------------------------------------
+ 0x27 | rdsdev | ditto for RDS
+ --------------------------------------------------------------------
+ 0x28 | assidev | ditto for ASSI
+ --------------------------------------------------------------------
+ 0x29 | strongdev | Frequency deviation
+ --------------------------------------------------------------------
+ 0x30 | rdspi | RDS PI code
+ --------------------------------------------------------------------
+
+* /sys/kernel/debug/<device-name>/rsq_primary
+ This file contains information about parameters pertaining to
+ RSQ(Received Signal Quality) for primary tuner only. Layout is as
+ the one above.
diff --git a/drivers/media/radio/Kconfig b/drivers/media/radio/Kconfig
index 24e64a09884c..c0beee2fa37c 100644
--- a/drivers/media/radio/Kconfig
+++ b/drivers/media/radio/Kconfig
@@ -18,6 +18,22 @@ config RADIO_SI470X
source "drivers/media/radio/si470x/Kconfig"
+config RADIO_SI476X
+ tristate "Silicon Laboratories Si476x I2C FM Radio"
+ depends on I2C && VIDEO_V4L2
+ depends on MFD_SI476X_CORE
+ select SND_SOC_SI476X
+ ---help---
+ Choose Y here if you have this FM radio chip.
+
+ In order to control your radio card, you will need to use programs
+ that are compatible with the Video For Linux 2 API. Information on
+ this API and pointers to "v4l2" programs may be found at
+ <file:Documentation/video4linux/API.html>.
+
+ To compile this driver as a module, choose M here: the
+ module will be called radio-si476x.
+
config USB_MR800
tristate "AverMedia MR 800 USB FM radio support"
depends on USB && VIDEO_V4L2
diff --git a/drivers/media/radio/Makefile b/drivers/media/radio/Makefile
index 303eaebdb85a..0dcdb320cfc7 100644
--- a/drivers/media/radio/Makefile
+++ b/drivers/media/radio/Makefile
@@ -19,6 +19,7 @@ obj-$(CONFIG_RADIO_GEMTEK) += radio-gemtek.o
obj-$(CONFIG_RADIO_TRUST) += radio-trust.o
obj-$(CONFIG_I2C_SI4713) += si4713-i2c.o
obj-$(CONFIG_RADIO_SI4713) += radio-si4713.o
+obj-$(CONFIG_RADIO_SI476X) += radio-si476x.o
obj-$(CONFIG_RADIO_MIROPCM20) += radio-miropcm20.o
obj-$(CONFIG_USB_DSBR) += dsbr100.o
obj-$(CONFIG_RADIO_SI470X) += si470x/
diff --git a/drivers/media/radio/radio-si476x.c b/drivers/media/radio/radio-si476x.c
new file mode 100644
index 000000000000..9430c6a29937
--- /dev/null
+++ b/drivers/media/radio/radio-si476x.c
@@ -0,0 +1,1599 @@
+/*
+ * drivers/media/radio/radio-si476x.c -- V4L2 driver for SI476X chips
+ *
+ * Copyright (C) 2012 Innovative Converged Devices(ICD)
+ * Copyright (C) 2013 Andrey Smirnov
+ *
+ * Author: Andrey Smirnov <andrew.smirnov@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/slab.h>
+#include <linux/atomic.h>
+#include <linux/videodev2.h>
+#include <linux/mutex.h>
+#include <linux/debugfs.h>
+#include <media/v4l2-common.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-event.h>
+#include <media/v4l2-device.h>
+
+#include <media/si476x.h>
+#include <linux/mfd/si476x-core.h>
+
+#define FM_FREQ_RANGE_LOW 64000000
+#define FM_FREQ_RANGE_HIGH 108000000
+
+#define AM_FREQ_RANGE_LOW 520000
+#define AM_FREQ_RANGE_HIGH 30000000
+
+#define PWRLINEFLTR (1 << 8)
+
+#define FREQ_MUL (10000000 / 625)
+
+#define SI476X_PHDIV_STATUS_LINK_LOCKED(status) (0b10000000 & (status))
+
+#define DRIVER_NAME "si476x-radio"
+#define DRIVER_CARD "SI476x AM/FM Receiver"
+
+enum si476x_freq_bands {
+ SI476X_BAND_FM,
+ SI476X_BAND_AM,
+};
+
+static const struct v4l2_frequency_band si476x_bands[] = {
+ [SI476X_BAND_FM] = {
+ .type = V4L2_TUNER_RADIO,
+ .index = SI476X_BAND_FM,
+ .capability = V4L2_TUNER_CAP_LOW
+ | V4L2_TUNER_CAP_STEREO
+ | V4L2_TUNER_CAP_RDS
+ | V4L2_TUNER_CAP_RDS_BLOCK_IO
+ | V4L2_TUNER_CAP_FREQ_BANDS,
+ .rangelow = 64 * FREQ_MUL,
+ .rangehigh = 108 * FREQ_MUL,
+ .modulation = V4L2_BAND_MODULATION_FM,
+ },
+ [SI476X_BAND_AM] = {
+ .type = V4L2_TUNER_RADIO,
+ .index = SI476X_BAND_AM,
+ .capability = V4L2_TUNER_CAP_LOW
+ | V4L2_TUNER_CAP_FREQ_BANDS,
+ .rangelow = 0.52 * FREQ_MUL,
+ .rangehigh = 30 * FREQ_MUL,
+ .modulation = V4L2_BAND_MODULATION_AM,
+ },
+};
+
+static inline bool si476x_radio_freq_is_inside_of_the_band(u32 freq, int band)
+{
+ return freq >= si476x_bands[band].rangelow &&
+ freq <= si476x_bands[band].rangehigh;
+}
+
+static inline bool si476x_radio_range_is_inside_of_the_band(u32 low, u32 high,
+ int band)
+{
+ return low >= si476x_bands[band].rangelow &&
+ high <= si476x_bands[band].rangehigh;
+}
+
+static int si476x_radio_s_ctrl(struct v4l2_ctrl *ctrl);
+static int si476x_radio_g_volatile_ctrl(struct v4l2_ctrl *ctrl);
+
+enum phase_diversity_modes_idx {
+ SI476X_IDX_PHDIV_DISABLED,
+ SI476X_IDX_PHDIV_PRIMARY_COMBINING,
+ SI476X_IDX_PHDIV_PRIMARY_ANTENNA,
+ SI476X_IDX_PHDIV_SECONDARY_ANTENNA,
+ SI476X_IDX_PHDIV_SECONDARY_COMBINING,
+};
+
+static const char * const phase_diversity_modes[] = {
+ [SI476X_IDX_PHDIV_DISABLED] = "Disabled",
+ [SI476X_IDX_PHDIV_PRIMARY_COMBINING] = "Primary with Secondary",
+ [SI476X_IDX_PHDIV_PRIMARY_ANTENNA] = "Primary Antenna",
+ [SI476X_IDX_PHDIV_SECONDARY_ANTENNA] = "Secondary Antenna",
+ [SI476X_IDX_PHDIV_SECONDARY_COMBINING] = "Secondary with Primary",
+};
+
+static inline enum phase_diversity_modes_idx
+si476x_phase_diversity_mode_to_idx(enum si476x_phase_diversity_mode mode)
+{
+ switch (mode) {
+ default: /* FALLTHROUGH */
+ case SI476X_PHDIV_DISABLED:
+ return SI476X_IDX_PHDIV_DISABLED;
+ case SI476X_PHDIV_PRIMARY_COMBINING:
+ return SI476X_IDX_PHDIV_PRIMARY_COMBINING;
+ case SI476X_PHDIV_PRIMARY_ANTENNA:
+ return SI476X_IDX_PHDIV_PRIMARY_ANTENNA;
+ case SI476X_PHDIV_SECONDARY_ANTENNA:
+ return SI476X_IDX_PHDIV_SECONDARY_ANTENNA;
+ case SI476X_PHDIV_SECONDARY_COMBINING:
+ return SI476X_IDX_PHDIV_SECONDARY_COMBINING;
+ }
+}
+
+static inline enum si476x_phase_diversity_mode
+si476x_phase_diversity_idx_to_mode(enum phase_diversity_modes_idx idx)
+{
+ static const int idx_to_value[] = {
+ [SI476X_IDX_PHDIV_DISABLED] = SI476X_PHDIV_DISABLED,
+ [SI476X_IDX_PHDIV_PRIMARY_COMBINING] = SI476X_PHDIV_PRIMARY_COMBINING,
+ [SI476X_IDX_PHDIV_PRIMARY_ANTENNA] = SI476X_PHDIV_PRIMARY_ANTENNA,
+ [SI476X_IDX_PHDIV_SECONDARY_ANTENNA] = SI476X_PHDIV_SECONDARY_ANTENNA,
+ [SI476X_IDX_PHDIV_SECONDARY_COMBINING] = SI476X_PHDIV_SECONDARY_COMBINING,
+ };
+
+ return idx_to_value[idx];
+}
+
+static const struct v4l2_ctrl_ops si476x_ctrl_ops = {
+ .g_volatile_ctrl = si476x_radio_g_volatile_ctrl,
+ .s_ctrl = si476x_radio_s_ctrl,
+};
+
+
+enum si476x_ctrl_idx {
+ SI476X_IDX_RSSI_THRESHOLD,
+ SI476X_IDX_SNR_THRESHOLD,
+ SI476X_IDX_MAX_TUNE_ERROR,
+ SI476X_IDX_HARMONICS_COUNT,
+ SI476X_IDX_DIVERSITY_MODE,
+ SI476X_IDX_INTERCHIP_LINK,
+};
+static struct v4l2_ctrl_config si476x_ctrls[] = {
+
+ /**
+ * SI476X during its station seeking(or tuning) process uses several
+ * parameters to detrmine if "the station" is valid:
+ *
+ * - Signal's SNR(in dBuV) must be lower than
+ * #V4L2_CID_SI476X_SNR_THRESHOLD
+ * - Signal's RSSI(in dBuV) must be greater than
+ * #V4L2_CID_SI476X_RSSI_THRESHOLD
+ * - Signal's frequency deviation(in units of 2ppm) must not be
+ * more than #V4L2_CID_SI476X_MAX_TUNE_ERROR
+ */
+ [SI476X_IDX_RSSI_THRESHOLD] = {
+ .ops = &si476x_ctrl_ops,
+ .id = V4L2_CID_SI476X_RSSI_THRESHOLD,
+ .name = "Valid RSSI Threshold",
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .min = -128,
+ .max = 127,
+ .step = 1,
+ },
+ [SI476X_IDX_SNR_THRESHOLD] = {
+ .ops = &si476x_ctrl_ops,
+ .id = V4L2_CID_SI476X_SNR_THRESHOLD,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Valid SNR Threshold",
+ .min = -128,
+ .max = 127,
+ .step = 1,
+ },
+ [SI476X_IDX_MAX_TUNE_ERROR] = {
+ .ops = &si476x_ctrl_ops,
+ .id = V4L2_CID_SI476X_MAX_TUNE_ERROR,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Max Tune Errors",
+ .min = 0,
+ .max = 126 * 2,
+ .step = 2,
+ },
+
+ /**
+ * #V4L2_CID_SI476X_HARMONICS_COUNT -- number of harmonics
+ * built-in power-line noise supression filter is to reject
+ * during AM-mode operation.
+ */
+ [SI476X_IDX_HARMONICS_COUNT] = {
+ .ops = &si476x_ctrl_ops,
+ .id = V4L2_CID_SI476X_HARMONICS_COUNT,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+
+ .name = "Count of Harmonics to Reject",
+ .min = 0,
+ .max = 20,
+ .step = 1,
+ },
+
+ /**
+ * #V4L2_CID_SI476X_DIVERSITY_MODE -- configuration which
+ * two tuners working in diversity mode are to work in.
+ *
+ * - #SI476X_IDX_PHDIV_DISABLED diversity mode disabled
+ * - #SI476X_IDX_PHDIV_PRIMARY_COMBINING diversity mode is
+ * on, primary tuner's antenna is the main one.
+ * - #SI476X_IDX_PHDIV_PRIMARY_ANTENNA diversity mode is
+ * off, primary tuner's antenna is the main one.
+ * - #SI476X_IDX_PHDIV_SECONDARY_ANTENNA diversity mode is
+ * off, secondary tuner's antenna is the main one.
+ * - #SI476X_IDX_PHDIV_SECONDARY_COMBINING diversity mode is
+ * on, secondary tuner's antenna is the main one.
+ */
+ [SI476X_IDX_DIVERSITY_MODE] = {
+ .ops = &si476x_ctrl_ops,
+ .id = V4L2_CID_SI476X_DIVERSITY_MODE,
+ .type = V4L2_CTRL_TYPE_MENU,
+ .name = "Phase Diversity Mode",
+ .qmenu = phase_diversity_modes,
+ .min = 0,
+ .max = ARRAY_SIZE(phase_diversity_modes) - 1,
+ },
+
+ /**
+ * #V4L2_CID_SI476X_INTERCHIP_LINK -- inter-chip link in
+ * diversity mode indicator. Allows user to determine if two
+ * chips working in diversity mode have established a link
+ * between each other and if the system as a whole uses
+ * signals from both antennas to receive FM radio.
+ */
+ [SI476X_IDX_INTERCHIP_LINK] = {
+ .ops = &si476x_ctrl_ops,
+ .id = V4L2_CID_SI476X_INTERCHIP_LINK,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ .flags = V4L2_CTRL_FLAG_READ_ONLY | V4L2_CTRL_FLAG_VOLATILE,
+ .name = "Inter-Chip Link",
+ .min = 0,
+ .max = 1,
+ .step = 1,
+ },
+};
+
+struct si476x_radio;
+
+/**
+ * struct si476x_radio_ops - vtable of tuner functions
+ *
+ * This table holds pointers to functions implementing particular
+ * operations depending on the mode in which the tuner chip was
+ * configured to start in. If the function is not supported
+ * corresponding element is set to #NULL.
+ *
+ * @tune_freq: Tune chip to a specific frequency
+ * @seek_start: Star station seeking
+ * @rsq_status: Get Recieved Signal Quality(RSQ) status
+ * @rds_blckcnt: Get recived RDS blocks count
+ * @phase_diversity: Change phase diversity mode of the tuner
+ * @phase_div_status: Get phase diversity mode status
+ * @acf_status: Get the status of Automatically Controlled
+ * Features(ACF)
+ * @agc_status: Get Automatic Gain Control(AGC) status
+ */
+struct si476x_radio_ops {
+ int (*tune_freq)(struct si476x_core *, struct si476x_tune_freq_args *);
+ int (*seek_start)(struct si476x_core *, bool, bool);
+ int (*rsq_status)(struct si476x_core *, struct si476x_rsq_status_args *,
+ struct si476x_rsq_status_report *);
+ int (*rds_blckcnt)(struct si476x_core *, bool,
+ struct si476x_rds_blockcount_report *);
+
+ int (*phase_diversity)(struct si476x_core *,
+ enum si476x_phase_diversity_mode);
+ int (*phase_div_status)(struct si476x_core *);
+ int (*acf_status)(struct si476x_core *,
+ struct si476x_acf_status_report *);
+ int (*agc_status)(struct si476x_core *,
+ struct si476x_agc_status_report *);
+};
+
+/**
+ * struct si476x_radio - radio device
+ *
+ * @core: Pointer to underlying core device
+ * @videodev: Pointer to video device created by V4L2 subsystem
+ * @ops: Vtable of functions. See struct si476x_radio_ops for details
+ * @kref: Reference counter
+ * @core_lock: An r/w semaphore to brebvent the deletion of underlying
+ * core structure is the radio device is being used
+ */
+struct si476x_radio {
+ struct v4l2_device v4l2dev;
+ struct video_device videodev;
+ struct v4l2_ctrl_handler ctrl_handler;
+
+ struct si476x_core *core;
+ /* This field should not be accesses unless core lock is held */
+ const struct si476x_radio_ops *ops;
+
+ struct dentry *debugfs;
+ u32 audmode;
+};
+
+static inline struct si476x_radio *
+v4l2_dev_to_radio(struct v4l2_device *d)
+{
+ return container_of(d, struct si476x_radio, v4l2dev);
+}
+
+static inline struct si476x_radio *
+v4l2_ctrl_handler_to_radio(struct v4l2_ctrl_handler *d)
+{
+ return container_of(d, struct si476x_radio, ctrl_handler);
+}
+
+/*
+ * si476x_vidioc_querycap - query device capabilities
+ */
+static int si476x_radio_querycap(struct file *file, void *priv,
+ struct v4l2_capability *capability)
+{
+ struct si476x_radio *radio = video_drvdata(file);
+
+ strlcpy(capability->driver, radio->v4l2dev.name,
+ sizeof(capability->driver));
+ strlcpy(capability->card, DRIVER_CARD, sizeof(capability->card));
+ snprintf(capability->bus_info, sizeof(capability->bus_info),
+ "platform:%s", radio->v4l2dev.name);
+
+ capability->device_caps = V4L2_CAP_TUNER
+ | V4L2_CAP_RADIO
+ | V4L2_CAP_HW_FREQ_SEEK;
+
+ si476x_core_lock(radio->core);
+ if (!si476x_core_is_a_secondary_tuner(radio->core))
+ capability->device_caps |= V4L2_CAP_RDS_CAPTURE
+ | V4L2_CAP_READWRITE;
+ si476x_core_unlock(radio->core);
+
+ capability->capabilities = capability->device_caps
+ | V4L2_CAP_DEVICE_CAPS;
+ return 0;
+}
+
+static int si476x_radio_enum_freq_bands(struct file *file, void *priv,
+ struct v4l2_frequency_band *band)
+{
+ int err;
+ struct si476x_radio *radio = video_drvdata(file);
+
+ if (band->tuner != 0)
+ return -EINVAL;
+
+ switch (radio->core->chip_id) {
+ /* AM/FM tuners -- all bands are supported */
+ case SI476X_CHIP_SI4761:
+ case SI476X_CHIP_SI4764:
+ if (band->index < ARRAY_SIZE(si476x_bands)) {
+ *band = si476x_bands[band->index];
+ err = 0;
+ } else {
+ err = -EINVAL;
+ }
+ break;
+ /* FM companion tuner chips -- only FM bands are
+ * supported */
+ case SI476X_CHIP_SI4768:
+ if (band->index == SI476X_BAND_FM) {
+ *band = si476x_bands[band->index];
+ err = 0;
+ } else {
+ err = -EINVAL;
+ }
+ break;
+ default:
+ err = -EINVAL;
+ }
+
+ return err;
+}
+
+static int si476x_radio_g_tuner(struct file *file, void *priv,
+ struct v4l2_tuner *tuner)
+{
+ int err;
+ struct si476x_rsq_status_report report;
+ struct si476x_radio *radio = video_drvdata(file);
+
+ struct si476x_rsq_status_args args = {
+ .primary = false,
+ .rsqack = false,
+ .attune = false,
+ .cancel = false,
+ .stcack = false,
+ };
+
+ if (tuner->index != 0)
+ return -EINVAL;
+
+ tuner->type = V4L2_TUNER_RADIO;
+ tuner->capability = V4L2_TUNER_CAP_LOW /* Measure frequencies
+ * in multiples of
+ * 62.5 Hz */
+ | V4L2_TUNER_CAP_STEREO
+ | V4L2_TUNER_CAP_HWSEEK_BOUNDED
+ | V4L2_TUNER_CAP_HWSEEK_WRAP
+ | V4L2_TUNER_CAP_HWSEEK_PROG_LIM;
+
+ si476x_core_lock(radio->core);
+
+ if (si476x_core_is_a_secondary_tuner(radio->core)) {
+ strlcpy(tuner->name, "FM (secondary)", sizeof(tuner->name));
+ tuner->rxsubchans = 0;
+ tuner->rangelow = si476x_bands[SI476X_BAND_FM].rangelow;
+ } else if (si476x_core_has_am(radio->core)) {
+ if (si476x_core_is_a_primary_tuner(radio->core))
+ strlcpy(tuner->name, "AM/FM (primary)",
+ sizeof(tuner->name));
+ else
+ strlcpy(tuner->name, "AM/FM", sizeof(tuner->name));
+
+ tuner->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO
+ | V4L2_TUNER_SUB_RDS;
+ tuner->capability |= V4L2_TUNER_CAP_RDS
+ | V4L2_TUNER_CAP_RDS_BLOCK_IO
+ | V4L2_TUNER_CAP_FREQ_BANDS;
+
+ tuner->rangelow = si476x_bands[SI476X_BAND_AM].rangelow;
+ } else {
+ strlcpy(tuner->name, "FM", sizeof(tuner->name));
+ tuner->rxsubchans = V4L2_TUNER_SUB_RDS;
+ tuner->capability |= V4L2_TUNER_CAP_RDS
+ | V4L2_TUNER_CAP_RDS_BLOCK_IO
+ | V4L2_TUNER_CAP_FREQ_BANDS;
+ tuner->rangelow = si476x_bands[SI476X_BAND_FM].rangelow;
+ }
+
+ tuner->audmode = radio->audmode;
+
+ tuner->afc = 1;
+ tuner->rangehigh = si476x_bands[SI476X_BAND_FM].rangehigh;
+
+ err = radio->ops->rsq_status(radio->core,
+ &args, &report);
+ if (err < 0) {
+ tuner->signal = 0;
+ } else {
+ /*
+ * tuner->signal value range: 0x0000 .. 0xFFFF,
+ * report.rssi: -128 .. 127
+ */
+ tuner->signal = (report.rssi + 128) * 257;
+ }
+ si476x_core_unlock(radio->core);
+
+ return err;
+}
+
+static int si476x_radio_s_tuner(struct file *file, void *priv,
+ const struct v4l2_tuner *tuner)
+{
+ struct si476x_radio *radio = video_drvdata(file);
+
+ if (tuner->index != 0)
+ return -EINVAL;
+
+ if (tuner->audmode == V4L2_TUNER_MODE_MONO ||
+ tuner->audmode == V4L2_TUNER_MODE_STEREO)
+ radio->audmode = tuner->audmode;
+ else
+ radio->audmode = V4L2_TUNER_MODE_STEREO;
+
+ return 0;
+}
+
+static int si476x_radio_init_vtable(struct si476x_radio *radio,
+ enum si476x_func func)
+{
+ static const struct si476x_radio_ops fm_ops = {
+ .tune_freq = si476x_core_cmd_fm_tune_freq,
+ .seek_start = si476x_core_cmd_fm_seek_start,
+ .rsq_status = si476x_core_cmd_fm_rsq_status,
+ .rds_blckcnt = si476x_core_cmd_fm_rds_blockcount,
+ .phase_diversity = si476x_core_cmd_fm_phase_diversity,
+ .phase_div_status = si476x_core_cmd_fm_phase_div_status,
+ .acf_status = si476x_core_cmd_fm_acf_status,
+ .agc_status = si476x_core_cmd_agc_status,
+ };
+
+ static const struct si476x_radio_ops am_ops = {
+ .tune_freq = si476x_core_cmd_am_tune_freq,
+ .seek_start = si476x_core_cmd_am_seek_start,
+ .rsq_status = si476x_core_cmd_am_rsq_status,
+ .rds_blckcnt = NULL,
+ .phase_diversity = NULL,
+ .phase_div_status = NULL,
+ .acf_status = si476x_core_cmd_am_acf_status,
+ .agc_status = NULL,
+ };
+
+ switch (func) {
+ case SI476X_FUNC_FM_RECEIVER:
+ radio->ops = &fm_ops;
+ return 0;
+
+ case SI476X_FUNC_AM_RECEIVER:
+ radio->ops = &am_ops;
+ return 0;
+ default:
+ WARN(1, "Unexpected tuner function value\n");
+ return -EINVAL;
+ }
+}
+
+static int si476x_radio_pretune(struct si476x_radio *radio,
+ enum si476x_func func)
+{
+ int retval;
+
+ struct si476x_tune_freq_args args = {
+ .zifsr = false,
+ .hd = false,
+ .injside = SI476X_INJSIDE_AUTO,
+ .tunemode = SI476X_TM_VALIDATED_NORMAL_TUNE,
+ .smoothmetrics = SI476X_SM_INITIALIZE_AUDIO,
+ .antcap = 0,
+ };
+
+ switch (func) {
+ case SI476X_FUNC_FM_RECEIVER:
+ args.freq = v4l2_to_si476x(radio->core,
+ 92 * FREQ_MUL);
+ retval = radio->ops->tune_freq(radio->core, &args);
+ break;
+ case SI476X_FUNC_AM_RECEIVER:
+ args.freq = v4l2_to_si476x(radio->core,
+ 0.6 * FREQ_MUL);
+ retval = radio->ops->tune_freq(radio->core, &args);
+ break;
+ default:
+ WARN(1, "Unexpected tuner function value\n");
+ retval = -EINVAL;
+ }
+
+ return retval;
+}
+static int si476x_radio_do_post_powerup_init(struct si476x_radio *radio,
+ enum si476x_func func)
+{
+ int err;
+
+ /* regcache_mark_dirty(radio->core->regmap); */
+ err = regcache_sync_region(radio->core->regmap,
+ SI476X_PROP_DIGITAL_IO_INPUT_SAMPLE_RATE,
+ SI476X_PROP_DIGITAL_IO_OUTPUT_FORMAT);
+ if (err < 0)
+ return err;
+
+ err = regcache_sync_region(radio->core->regmap,
+ SI476X_PROP_AUDIO_DEEMPHASIS,
+ SI476X_PROP_AUDIO_PWR_LINE_FILTER);
+ if (err < 0)
+ return err;
+
+ err = regcache_sync_region(radio->core->regmap,
+ SI476X_PROP_INT_CTL_ENABLE,
+ SI476X_PROP_INT_CTL_ENABLE);
+ if (err < 0)
+ return err;
+
+ /*
+ * Is there any point in restoring SNR and the like
+ * when switching between AM/FM?
+ */
+ err = regcache_sync_region(radio->core->regmap,
+ SI476X_PROP_VALID_MAX_TUNE_ERROR,
+ SI476X_PROP_VALID_MAX_TUNE_ERROR);
+ if (err < 0)
+ return err;
+
+ err = regcache_sync_region(radio->core->regmap,
+ SI476X_PROP_VALID_SNR_THRESHOLD,
+ SI476X_PROP_VALID_RSSI_THRESHOLD);
+ if (err < 0)
+ return err;
+
+ if (func == SI476X_FUNC_FM_RECEIVER) {
+ if (si476x_core_has_diversity(radio->core)) {
+ err = si476x_core_cmd_fm_phase_diversity(radio->core,
+ radio->core->diversity_mode);
+ if (err < 0)
+ return err;
+ }
+
+ err = regcache_sync_region(radio->core->regmap,
+ SI476X_PROP_FM_RDS_INTERRUPT_SOURCE,
+ SI476X_PROP_FM_RDS_CONFIG);
+ if (err < 0)
+ return err;
+ }
+
+ return si476x_radio_init_vtable(radio, func);
+
+}
+
+static int si476x_radio_change_func(struct si476x_radio *radio,
+ enum si476x_func func)
+{
+ int err;
+ bool soft;
+ /*
+ * Since power/up down is a very time consuming operation,
+ * try to avoid doing it if the requested mode matches the one
+ * the tuner is in
+ */
+ if (func == radio->core->power_up_parameters.func)
+ return 0;
+
+ soft = true;
+ err = si476x_core_stop(radio->core, soft);
+ if (err < 0) {
+ /*
+ * OK, if the chip does not want to play nice let's
+ * try to reset it in more brutal way
+ */
+ soft = false;
+ err = si476x_core_stop(radio->core, soft);
+ if (err < 0)
+ return err;
+ }
+ /*
+ Set the desired radio tuner function
+ */
+ radio->core->power_up_parameters.func = func;
+
+ err = si476x_core_start(radio->core, soft);
+ if (err < 0)
+ return err;
+
+ /*
+ * No need to do the rest of manipulations for the bootlader
+ * mode
+ */
+ if (func != SI476X_FUNC_FM_RECEIVER &&
+ func != SI476X_FUNC_AM_RECEIVER)
+ return err;
+
+ return si476x_radio_do_post_powerup_init(radio, func);
+}
+
+static int si476x_radio_g_frequency(struct file *file, void *priv,
+ struct v4l2_frequency *f)
+{
+ int err;
+ struct si476x_radio *radio = video_drvdata(file);
+
+ if (f->tuner != 0 ||
+ f->type != V4L2_TUNER_RADIO)
+ return -EINVAL;
+
+ si476x_core_lock(radio->core);
+
+ if (radio->ops->rsq_status) {
+ struct si476x_rsq_status_report report;
+ struct si476x_rsq_status_args args = {
+ .primary = false,
+ .rsqack = false,
+ .attune = true,
+ .cancel = false,
+ .stcack = false,
+ };
+
+ err = radio->ops->rsq_status(radio->core, &args, &report);
+ if (!err)
+ f->frequency = si476x_to_v4l2(radio->core,
+ report.readfreq);
+ } else {
+ err = -EINVAL;
+ }
+
+ si476x_core_unlock(radio->core);
+
+ return err;
+}
+
+static int si476x_radio_s_frequency(struct file *file, void *priv,
+ const struct v4l2_frequency *f)
+{
+ int err;
+ u32 freq = f->frequency;
+ struct si476x_tune_freq_args args;
+ struct si476x_radio *radio = video_drvdata(file);
+
+ const u32 midrange = (si476x_bands[SI476X_BAND_AM].rangehigh +
+ si476x_bands[SI476X_BAND_FM].rangelow) / 2;
+ const int band = (freq > midrange) ?
+ SI476X_BAND_FM : SI476X_BAND_AM;
+ const enum si476x_func func = (band == SI476X_BAND_AM) ?
+ SI476X_FUNC_AM_RECEIVER : SI476X_FUNC_FM_RECEIVER;
+
+ if (f->tuner != 0 ||
+ f->type != V4L2_TUNER_RADIO)
+ return -EINVAL;
+
+ si476x_core_lock(radio->core);
+
+ freq = clamp(freq,
+ si476x_bands[band].rangelow,
+ si476x_bands[band].rangehigh);
+
+ if (si476x_radio_freq_is_inside_of_the_band(freq,
+ SI476X_BAND_AM) &&
+ (!si476x_core_has_am(radio->core) ||
+ si476x_core_is_a_secondary_tuner(radio->core))) {
+ err = -EINVAL;
+ goto unlock;
+ }
+
+ err = si476x_radio_change_func(radio, func);
+ if (err < 0)
+ goto unlock;
+
+ args.zifsr = false;
+ args.hd = false;
+ args.injside = SI476X_INJSIDE_AUTO;
+ args.freq = v4l2_to_si476x(radio->core, freq);
+ args.tunemode = SI476X_TM_VALIDATED_NORMAL_TUNE;
+ args.smoothmetrics = SI476X_SM_INITIALIZE_AUDIO;
+ args.antcap = 0;
+
+ err = radio->ops->tune_freq(radio->core, &args);
+
+unlock:
+ si476x_core_unlock(radio->core);
+ return err;
+}
+
+static int si476x_radio_s_hw_freq_seek(struct file *file, void *priv,
+ const struct v4l2_hw_freq_seek *seek)
+{
+ int err;
+ enum si476x_func func;
+ u32 rangelow, rangehigh;
+ struct si476x_radio *radio = video_drvdata(file);
+
+ if (file->f_flags & O_NONBLOCK)
+ return -EAGAIN;
+
+ if (seek->tuner != 0 ||
+ seek->type != V4L2_TUNER_RADIO)
+ return -EINVAL;
+
+ si476x_core_lock(radio->core);
+
+ if (!seek->rangelow) {
+ err = regmap_read(radio->core->regmap,
+ SI476X_PROP_SEEK_BAND_BOTTOM,
+ &rangelow);
+ if (!err)
+ rangelow = si476x_to_v4l2(radio->core, rangelow);
+ else
+ goto unlock;
+ }
+ if (!seek->rangehigh) {
+ err = regmap_read(radio->core->regmap,
+ SI476X_PROP_SEEK_BAND_TOP,
+ &rangehigh);
+ if (!err)
+ rangehigh = si476x_to_v4l2(radio->core, rangehigh);
+ else
+ goto unlock;
+ }
+
+ if (rangelow > rangehigh) {
+ err = -EINVAL;
+ goto unlock;
+ }
+
+ if (si476x_radio_range_is_inside_of_the_band(rangelow, rangehigh,
+ SI476X_BAND_FM)) {
+ func = SI476X_FUNC_FM_RECEIVER;
+
+ } else if (si476x_core_has_am(radio->core) &&
+ si476x_radio_range_is_inside_of_the_band(rangelow, rangehigh,
+ SI476X_BAND_AM)) {
+ func = SI476X_FUNC_AM_RECEIVER;
+ } else {
+ err = -EINVAL;
+ goto unlock;
+ }
+
+ err = si476x_radio_change_func(radio, func);
+ if (err < 0)
+ goto unlock;
+
+ if (seek->rangehigh) {
+ err = regmap_write(radio->core->regmap,
+ SI476X_PROP_SEEK_BAND_TOP,
+ v4l2_to_si476x(radio->core,
+ seek->rangehigh));
+ if (err)
+ goto unlock;
+ }
+ if (seek->rangelow) {
+ err = regmap_write(radio->core->regmap,
+ SI476X_PROP_SEEK_BAND_BOTTOM,
+ v4l2_to_si476x(radio->core,
+ seek->rangelow));
+ if (err)
+ goto unlock;
+ }
+ if (seek->spacing) {
+ err = regmap_write(radio->core->regmap,
+ SI476X_PROP_SEEK_FREQUENCY_SPACING,
+ v4l2_to_si476x(radio->core,
+ seek->spacing));
+ if (err)
+ goto unlock;
+ }
+
+ err = radio->ops->seek_start(radio->core,
+ seek->seek_upward,
+ seek->wrap_around);
+unlock:
+ si476x_core_unlock(radio->core);
+
+
+
+ return err;
+}
+
+static int si476x_radio_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
+{
+ int retval;
+ struct si476x_radio *radio = v4l2_ctrl_handler_to_radio(ctrl->handler);
+
+ si476x_core_lock(radio->core);
+
+ switch (ctrl->id) {
+ case V4L2_CID_SI476X_INTERCHIP_LINK:
+ if (si476x_core_has_diversity(radio->core)) {
+ if (radio->ops->phase_diversity) {
+ retval = radio->ops->phase_div_status(radio->core);
+ if (retval < 0)
+ break;
+
+ ctrl->val = !!SI476X_PHDIV_STATUS_LINK_LOCKED(retval);
+ retval = 0;
+ break;
+ } else {
+ retval = -ENOTTY;
+ break;
+ }
+ }
+ retval = -EINVAL;
+ break;
+ default:
+ retval = -EINVAL;
+ break;
+ }
+ si476x_core_unlock(radio->core);
+ return retval;
+
+}
+
+static int si476x_radio_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ int retval;
+ enum si476x_phase_diversity_mode mode;
+ struct si476x_radio *radio = v4l2_ctrl_handler_to_radio(ctrl->handler);
+
+ si476x_core_lock(radio->core);
+
+ switch (ctrl->id) {
+ case V4L2_CID_SI476X_HARMONICS_COUNT:
+ retval = regmap_update_bits(radio->core->regmap,
+ SI476X_PROP_AUDIO_PWR_LINE_FILTER,
+ SI476X_PROP_PWR_HARMONICS_MASK,
+ ctrl->val);
+ break;
+ case V4L2_CID_POWER_LINE_FREQUENCY:
+ switch (ctrl->val) {
+ case V4L2_CID_POWER_LINE_FREQUENCY_DISABLED:
+ retval = regmap_update_bits(radio->core->regmap,
+ SI476X_PROP_AUDIO_PWR_LINE_FILTER,
+ SI476X_PROP_PWR_ENABLE_MASK,
+ 0);
+ break;
+ case V4L2_CID_POWER_LINE_FREQUENCY_50HZ:
+ retval = regmap_update_bits(radio->core->regmap,
+ SI476X_PROP_AUDIO_PWR_LINE_FILTER,
+ SI476X_PROP_PWR_GRID_MASK,
+ SI476X_PROP_PWR_GRID_50HZ);
+ break;
+ case V4L2_CID_POWER_LINE_FREQUENCY_60HZ:
+ retval = regmap_update_bits(radio->core->regmap,
+ SI476X_PROP_AUDIO_PWR_LINE_FILTER,
+ SI476X_PROP_PWR_GRID_MASK,
+ SI476X_PROP_PWR_GRID_60HZ);
+ break;
+ default:
+ retval = -EINVAL;
+ break;
+ }
+ break;
+ case V4L2_CID_SI476X_RSSI_THRESHOLD:
+ retval = regmap_write(radio->core->regmap,
+ SI476X_PROP_VALID_RSSI_THRESHOLD,
+ ctrl->val);
+ break;
+ case V4L2_CID_SI476X_SNR_THRESHOLD:
+ retval = regmap_write(radio->core->regmap,
+ SI476X_PROP_VALID_SNR_THRESHOLD,
+ ctrl->val);
+ break;
+ case V4L2_CID_SI476X_MAX_TUNE_ERROR:
+ retval = regmap_write(radio->core->regmap,
+ SI476X_PROP_VALID_MAX_TUNE_ERROR,
+ ctrl->val);
+ break;
+ case V4L2_CID_RDS_RECEPTION:
+ /*
+ * It looks like RDS related properties are
+ * inaccesable when tuner is in AM mode, so cache the
+ * changes
+ */
+ if (si476x_core_is_in_am_receiver_mode(radio->core))
+ regcache_cache_only(radio->core->regmap, true);
+
+ if (ctrl->val) {
+ retval = regmap_write(radio->core->regmap,
+ SI476X_PROP_FM_RDS_INTERRUPT_FIFO_COUNT,
+ radio->core->rds_fifo_depth);
+ if (retval < 0)
+ break;
+
+ if (radio->core->client->irq) {
+ retval = regmap_write(radio->core->regmap,
+ SI476X_PROP_FM_RDS_INTERRUPT_SOURCE,
+ SI476X_RDSRECV);
+ if (retval < 0)
+ break;
+ }
+
+ /* Drain RDS FIFO before enabling RDS processing */
+ retval = si476x_core_cmd_fm_rds_status(radio->core,
+ false,
+ true,
+ true,
+ NULL);
+ if (retval < 0)
+ break;
+
+ retval = regmap_update_bits(radio->core->regmap,
+ SI476X_PROP_FM_RDS_CONFIG,
+ SI476X_PROP_RDSEN_MASK,
+ SI476X_PROP_RDSEN);
+ } else {
+ retval = regmap_update_bits(radio->core->regmap,
+ SI476X_PROP_FM_RDS_CONFIG,
+ SI476X_PROP_RDSEN_MASK,
+ !SI476X_PROP_RDSEN);
+ }
+
+ if (si476x_core_is_in_am_receiver_mode(radio->core))
+ regcache_cache_only(radio->core->regmap, false);
+ break;
+ case V4L2_CID_TUNE_DEEMPHASIS:
+ retval = regmap_write(radio->core->regmap,
+ SI476X_PROP_AUDIO_DEEMPHASIS,
+ ctrl->val);
+ break;
+
+ case V4L2_CID_SI476X_DIVERSITY_MODE:
+ mode = si476x_phase_diversity_idx_to_mode(ctrl->val);
+
+ if (mode == radio->core->diversity_mode) {
+ retval = 0;
+ break;
+ }
+
+ if (si476x_core_is_in_am_receiver_mode(radio->core)) {
+ /*
+ * Diversity cannot be configured while tuner
+ * is in AM mode so save the changes and carry on.
+ */
+ radio->core->diversity_mode = mode;
+ retval = 0;
+ } else {
+ retval = radio->ops->phase_diversity(radio->core, mode);
+ if (!retval)
+ radio->core->diversity_mode = mode;
+ }
+ break;
+
+ default:
+ retval = -EINVAL;
+ break;
+ }
+
+ si476x_core_unlock(radio->core);
+
+ return retval;
+}
+
+static int si476x_radio_g_chip_ident(struct file *file, void *fh,
+ struct v4l2_dbg_chip_ident *chip)
+{
+ if (chip->match.type == V4L2_CHIP_MATCH_HOST &&
+ v4l2_chip_match_host(&chip->match))
+ return 0;
+ return -EINVAL;
+}
+
+
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+static int si476x_radio_g_register(struct file *file, void *fh,
+ struct v4l2_dbg_register *reg)
+{
+ int err;
+ unsigned int value;
+ struct si476x_radio *radio = video_drvdata(file);
+
+ si476x_core_lock(radio->core);
+ reg->size = 2;
+ err = regmap_read(radio->core->regmap,
+ (unsigned int)reg->reg, &value);
+ reg->val = value;
+ si476x_core_unlock(radio->core);
+
+ return err;
+}
+static int si476x_radio_s_register(struct file *file, void *fh,
+ const struct v4l2_dbg_register *reg)
+{
+
+ int err;
+ struct si476x_radio *radio = video_drvdata(file);
+
+ si476x_core_lock(radio->core);
+ err = regmap_write(radio->core->regmap,
+ (unsigned int)reg->reg,
+ (unsigned int)reg->val);
+ si476x_core_unlock(radio->core);
+
+ return err;
+}
+#endif
+
+static int si476x_radio_fops_open(struct file *file)
+{
+ struct si476x_radio *radio = video_drvdata(file);
+ int err;
+
+ err = v4l2_fh_open(file);
+ if (err)
+ return err;
+
+ if (v4l2_fh_is_singular_file(file)) {
+ si476x_core_lock(radio->core);
+ err = si476x_core_set_power_state(radio->core,
+ SI476X_POWER_UP_FULL);
+ if (err < 0)
+ goto done;
+
+ err = si476x_radio_do_post_powerup_init(radio,
+ radio->core->power_up_parameters.func);
+ if (err < 0)
+ goto power_down;
+
+ err = si476x_radio_pretune(radio,
+ radio->core->power_up_parameters.func);
+ if (err < 0)
+ goto power_down;
+
+ si476x_core_unlock(radio->core);
+ /*Must be done after si476x_core_unlock to prevent a deadlock*/
+ v4l2_ctrl_handler_setup(&radio->ctrl_handler);
+ }
+
+ return err;
+
+power_down:
+ si476x_core_set_power_state(radio->core,
+ SI476X_POWER_DOWN);
+done:
+ si476x_core_unlock(radio->core);
+ v4l2_fh_release(file);
+
+ return err;
+}
+
+static int si476x_radio_fops_release(struct file *file)
+{
+ int err;
+ struct si476x_radio *radio = video_drvdata(file);
+
+ if (v4l2_fh_is_singular_file(file) &&
+ atomic_read(&radio->core->is_alive))
+ si476x_core_set_power_state(radio->core,
+ SI476X_POWER_DOWN);
+
+ err = v4l2_fh_release(file);
+
+ return err;
+}
+
+static ssize_t si476x_radio_fops_read(struct file *file, char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ ssize_t rval;
+ size_t fifo_len;
+ unsigned int copied;
+
+ struct si476x_radio *radio = video_drvdata(file);
+
+ /* block if no new data available */
+ if (kfifo_is_empty(&radio->core->rds_fifo)) {
+ if (file->f_flags & O_NONBLOCK)
+ return -EWOULDBLOCK;
+
+ rval = wait_event_interruptible(radio->core->rds_read_queue,
+ (!kfifo_is_empty(&radio->core->rds_fifo) ||
+ !atomic_read(&radio->core->is_alive)));
+ if (rval < 0)
+ return -EINTR;
+
+ if (!atomic_read(&radio->core->is_alive))
+ return -ENODEV;
+ }
+
+ fifo_len = kfifo_len(&radio->core->rds_fifo);
+
+ if (kfifo_to_user(&radio->core->rds_fifo, buf,
+ min(fifo_len, count),
+ &copied) != 0) {
+ dev_warn(&radio->videodev.dev,
+ "Error during FIFO to userspace copy\n");
+ rval = -EIO;
+ } else {
+ rval = (ssize_t)copied;
+ }
+
+ return rval;
+}
+
+static unsigned int si476x_radio_fops_poll(struct file *file,
+ struct poll_table_struct *pts)
+{
+ struct si476x_radio *radio = video_drvdata(file);
+ unsigned long req_events = poll_requested_events(pts);
+ unsigned int err = v4l2_ctrl_poll(file, pts);
+
+ if (req_events & (POLLIN | POLLRDNORM)) {
+ if (atomic_read(&radio->core->is_alive))
+ poll_wait(file, &radio->core->rds_read_queue, pts);
+
+ if (!atomic_read(&radio->core->is_alive))
+ err = POLLHUP;
+
+ if (!kfifo_is_empty(&radio->core->rds_fifo))
+ err = POLLIN | POLLRDNORM;
+ }
+
+ return err;
+}
+
+static const struct v4l2_file_operations si476x_fops = {
+ .owner = THIS_MODULE,
+ .read = si476x_radio_fops_read,
+ .poll = si476x_radio_fops_poll,
+ .unlocked_ioctl = video_ioctl2,
+ .open = si476x_radio_fops_open,
+ .release = si476x_radio_fops_release,
+};
+
+
+static const struct v4l2_ioctl_ops si4761_ioctl_ops = {
+ .vidioc_querycap = si476x_radio_querycap,
+ .vidioc_g_tuner = si476x_radio_g_tuner,
+ .vidioc_s_tuner = si476x_radio_s_tuner,
+
+ .vidioc_g_frequency = si476x_radio_g_frequency,
+ .vidioc_s_frequency = si476x_radio_s_frequency,
+ .vidioc_s_hw_freq_seek = si476x_radio_s_hw_freq_seek,
+ .vidioc_enum_freq_bands = si476x_radio_enum_freq_bands,
+
+ .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
+ .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
+
+ .vidioc_g_chip_ident = si476x_radio_g_chip_ident,
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+ .vidioc_g_register = si476x_radio_g_register,
+ .vidioc_s_register = si476x_radio_s_register,
+#endif
+};
+
+
+static const struct video_device si476x_viddev_template = {
+ .fops = &si476x_fops,
+ .name = DRIVER_NAME,
+ .release = video_device_release_empty,
+};
+
+
+
+static ssize_t si476x_radio_read_acf_blob(struct file *file,
+ char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ int err;
+ struct si476x_radio *radio = file->private_data;
+ struct si476x_acf_status_report report;
+
+ si476x_core_lock(radio->core);
+ if (radio->ops->acf_status)
+ err = radio->ops->acf_status(radio->core, &report);
+ else
+ err = -ENOENT;
+ si476x_core_unlock(radio->core);
+
+ if (err < 0)
+ return err;
+
+ return simple_read_from_buffer(user_buf, count, ppos, &report,
+ sizeof(report));
+}
+
+static const struct file_operations radio_acf_fops = {
+ .open = simple_open,
+ .llseek = default_llseek,
+ .read = si476x_radio_read_acf_blob,
+};
+
+static ssize_t si476x_radio_read_rds_blckcnt_blob(struct file *file,
+ char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ int err;
+ struct si476x_radio *radio = file->private_data;
+ struct si476x_rds_blockcount_report report;
+
+ si476x_core_lock(radio->core);
+ if (radio->ops->rds_blckcnt)
+ err = radio->ops->rds_blckcnt(radio->core, true,
+ &report);
+ else
+ err = -ENOENT;
+ si476x_core_unlock(radio->core);
+
+ if (err < 0)
+ return err;
+
+ return simple_read_from_buffer(user_buf, count, ppos, &report,
+ sizeof(report));
+}
+
+static const struct file_operations radio_rds_blckcnt_fops = {
+ .open = simple_open,
+ .llseek = default_llseek,
+ .read = si476x_radio_read_rds_blckcnt_blob,
+};
+
+static ssize_t si476x_radio_read_agc_blob(struct file *file,
+ char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ int err;
+ struct si476x_radio *radio = file->private_data;
+ struct si476x_agc_status_report report;
+
+ si476x_core_lock(radio->core);
+ if (radio->ops->rds_blckcnt)
+ err = radio->ops->agc_status(radio->core, &report);
+ else
+ err = -ENOENT;
+ si476x_core_unlock(radio->core);
+
+ if (err < 0)
+ return err;
+
+ return simple_read_from_buffer(user_buf, count, ppos, &report,
+ sizeof(report));
+}
+
+static const struct file_operations radio_agc_fops = {
+ .open = simple_open,
+ .llseek = default_llseek,
+ .read = si476x_radio_read_agc_blob,
+};
+
+static ssize_t si476x_radio_read_rsq_blob(struct file *file,
+ char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ int err;
+ struct si476x_radio *radio = file->private_data;
+ struct si476x_rsq_status_report report;
+ struct si476x_rsq_status_args args = {
+ .primary = false,
+ .rsqack = false,
+ .attune = false,
+ .cancel = false,
+ .stcack = false,
+ };
+
+ si476x_core_lock(radio->core);
+ if (radio->ops->rds_blckcnt)
+ err = radio->ops->rsq_status(radio->core, &args, &report);
+ else
+ err = -ENOENT;
+ si476x_core_unlock(radio->core);
+
+ if (err < 0)
+ return err;
+
+ return simple_read_from_buffer(user_buf, count, ppos, &report,
+ sizeof(report));
+}
+
+static const struct file_operations radio_rsq_fops = {
+ .open = simple_open,
+ .llseek = default_llseek,
+ .read = si476x_radio_read_rsq_blob,
+};
+
+static ssize_t si476x_radio_read_rsq_primary_blob(struct file *file,
+ char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ int err;
+ struct si476x_radio *radio = file->private_data;
+ struct si476x_rsq_status_report report;
+ struct si476x_rsq_status_args args = {
+ .primary = true,
+ .rsqack = false,
+ .attune = false,
+ .cancel = false,
+ .stcack = false,
+ };
+
+ si476x_core_lock(radio->core);
+ if (radio->ops->rds_blckcnt)
+ err = radio->ops->rsq_status(radio->core, &args, &report);
+ else
+ err = -ENOENT;
+ si476x_core_unlock(radio->core);
+
+ if (err < 0)
+ return err;
+
+ return simple_read_from_buffer(user_buf, count, ppos, &report,
+ sizeof(report));
+}
+
+static const struct file_operations radio_rsq_primary_fops = {
+ .open = simple_open,
+ .llseek = default_llseek,
+ .read = si476x_radio_read_rsq_primary_blob,
+};
+
+
+static int si476x_radio_init_debugfs(struct si476x_radio *radio)
+{
+ struct dentry *dentry;
+ int ret;
+
+ dentry = debugfs_create_dir(dev_name(radio->v4l2dev.dev), NULL);
+ if (IS_ERR(dentry)) {
+ ret = PTR_ERR(dentry);
+ goto exit;
+ }
+ radio->debugfs = dentry;
+
+ dentry = debugfs_create_file("acf", S_IRUGO,
+ radio->debugfs, radio, &radio_acf_fops);
+ if (IS_ERR(dentry)) {
+ ret = PTR_ERR(dentry);
+ goto cleanup;
+ }
+
+ dentry = debugfs_create_file("rds_blckcnt", S_IRUGO,
+ radio->debugfs, radio,
+ &radio_rds_blckcnt_fops);
+ if (IS_ERR(dentry)) {
+ ret = PTR_ERR(dentry);
+ goto cleanup;
+ }
+
+ dentry = debugfs_create_file("agc", S_IRUGO,
+ radio->debugfs, radio, &radio_agc_fops);
+ if (IS_ERR(dentry)) {
+ ret = PTR_ERR(dentry);
+ goto cleanup;
+ }
+
+ dentry = debugfs_create_file("rsq", S_IRUGO,
+ radio->debugfs, radio, &radio_rsq_fops);
+ if (IS_ERR(dentry)) {
+ ret = PTR_ERR(dentry);
+ goto cleanup;
+ }
+
+ dentry = debugfs_create_file("rsq_primary", S_IRUGO,
+ radio->debugfs, radio,
+ &radio_rsq_primary_fops);
+ if (IS_ERR(dentry)) {
+ ret = PTR_ERR(dentry);
+ goto cleanup;
+ }
+
+ return 0;
+cleanup:
+ debugfs_remove_recursive(radio->debugfs);
+exit:
+ return ret;
+}
+
+
+static int si476x_radio_add_new_custom(struct si476x_radio *radio,
+ enum si476x_ctrl_idx idx)
+{
+ int rval;
+ struct v4l2_ctrl *ctrl;
+
+ ctrl = v4l2_ctrl_new_custom(&radio->ctrl_handler,
+ &si476x_ctrls[idx],
+ NULL);
+ rval = radio->ctrl_handler.error;
+ if (ctrl == NULL && rval)
+ dev_err(radio->v4l2dev.dev,
+ "Could not initialize '%s' control %d\n",
+ si476x_ctrls[idx].name, rval);
+
+ return rval;
+}
+
+static int si476x_radio_probe(struct platform_device *pdev)
+{
+ int rval;
+ struct si476x_radio *radio;
+ struct v4l2_ctrl *ctrl;
+
+ static atomic_t instance = ATOMIC_INIT(0);
+
+ radio = devm_kzalloc(&pdev->dev, sizeof(*radio), GFP_KERNEL);
+ if (!radio)
+ return -ENOMEM;
+
+ radio->core = i2c_mfd_cell_to_core(&pdev->dev);
+
+ v4l2_device_set_name(&radio->v4l2dev, DRIVER_NAME, &instance);
+
+ rval = v4l2_device_register(&pdev->dev, &radio->v4l2dev);
+ if (rval) {
+ dev_err(&pdev->dev, "Cannot register v4l2_device.\n");
+ return rval;
+ }
+
+ memcpy(&radio->videodev, &si476x_viddev_template,
+ sizeof(struct video_device));
+
+ radio->videodev.v4l2_dev = &radio->v4l2dev;
+ radio->videodev.ioctl_ops = &si4761_ioctl_ops;
+
+ video_set_drvdata(&radio->videodev, radio);
+ platform_set_drvdata(pdev, radio);
+
+ set_bit(V4L2_FL_USE_FH_PRIO, &radio->videodev.flags);
+
+ radio->v4l2dev.ctrl_handler = &radio->ctrl_handler;
+ v4l2_ctrl_handler_init(&radio->ctrl_handler,
+ 1 + ARRAY_SIZE(si476x_ctrls));
+
+ if (si476x_core_has_am(radio->core)) {
+ ctrl = v4l2_ctrl_new_std_menu(&radio->ctrl_handler,
+ &si476x_ctrl_ops,
+ V4L2_CID_POWER_LINE_FREQUENCY,
+ V4L2_CID_POWER_LINE_FREQUENCY_60HZ,
+ 0, 0);
+ rval = radio->ctrl_handler.error;
+ if (ctrl == NULL && rval) {
+ dev_err(&pdev->dev, "Could not initialize V4L2_CID_POWER_LINE_FREQUENCY control %d\n",
+ rval);
+ goto exit;
+ }
+
+ rval = si476x_radio_add_new_custom(radio,
+ SI476X_IDX_HARMONICS_COUNT);
+ if (rval < 0)
+ goto exit;
+ }
+
+ rval = si476x_radio_add_new_custom(radio, SI476X_IDX_RSSI_THRESHOLD);
+ if (rval < 0)
+ goto exit;
+
+ rval = si476x_radio_add_new_custom(radio, SI476X_IDX_SNR_THRESHOLD);
+ if (rval < 0)
+ goto exit;
+
+ rval = si476x_radio_add_new_custom(radio, SI476X_IDX_MAX_TUNE_ERROR);
+ if (rval < 0)
+ goto exit;
+
+ ctrl = v4l2_ctrl_new_std_menu(&radio->ctrl_handler,
+ &si476x_ctrl_ops,
+ V4L2_CID_TUNE_DEEMPHASIS,
+ V4L2_DEEMPHASIS_75_uS, 0, 0);
+ rval = radio->ctrl_handler.error;
+ if (ctrl == NULL && rval) {
+ dev_err(&pdev->dev, "Could not initialize V4L2_CID_TUNE_DEEMPHASIS control %d\n",
+ rval);
+ goto exit;
+ }
+
+ ctrl = v4l2_ctrl_new_std(&radio->ctrl_handler, &si476x_ctrl_ops,
+ V4L2_CID_RDS_RECEPTION,
+ 0, 1, 1, 1);
+ rval = radio->ctrl_handler.error;
+ if (ctrl == NULL && rval) {
+ dev_err(&pdev->dev, "Could not initialize V4L2_CID_RDS_RECEPTION control %d\n",
+ rval);
+ goto exit;
+ }
+
+ if (si476x_core_has_diversity(radio->core)) {
+ si476x_ctrls[SI476X_IDX_DIVERSITY_MODE].def =
+ si476x_phase_diversity_mode_to_idx(radio->core->diversity_mode);
+ si476x_radio_add_new_custom(radio, SI476X_IDX_DIVERSITY_MODE);
+ if (rval < 0)
+ goto exit;
+
+ si476x_radio_add_new_custom(radio, SI476X_IDX_INTERCHIP_LINK);
+ if (rval < 0)
+ goto exit;
+ }
+
+ /* register video device */
+ rval = video_register_device(&radio->videodev, VFL_TYPE_RADIO, -1);
+ if (rval < 0) {
+ dev_err(&pdev->dev, "Could not register video device\n");
+ goto exit;
+ }
+
+ rval = si476x_radio_init_debugfs(radio);
+ if (rval < 0) {
+ dev_err(&pdev->dev, "Could not creat debugfs interface\n");
+ goto exit;
+ }
+
+ return 0;
+exit:
+ v4l2_ctrl_handler_free(radio->videodev.ctrl_handler);
+ return rval;
+}
+
+static int si476x_radio_remove(struct platform_device *pdev)
+{
+ struct si476x_radio *radio = platform_get_drvdata(pdev);
+
+ v4l2_ctrl_handler_free(radio->videodev.ctrl_handler);
+ video_unregister_device(&radio->videodev);
+ v4l2_device_unregister(&radio->v4l2dev);
+ debugfs_remove_recursive(radio->debugfs);
+
+ return 0;
+}
+
+MODULE_ALIAS("platform:si476x-radio");
+
+static struct platform_driver si476x_radio_driver = {
+ .driver = {
+ .name = DRIVER_NAME,
+ .owner = THIS_MODULE,
+ },
+ .probe = si476x_radio_probe,
+ .remove = si476x_radio_remove,
+};
+module_platform_driver(si476x_radio_driver);
+
+MODULE_AUTHOR("Andrey Smirnov <andrew.smirnov@gmail.com>");
+MODULE_DESCRIPTION("Driver for Si4761/64/68 AM/FM Radio MFD Cell");
+MODULE_LICENSE("GPL");
diff --git a/drivers/mfd/si476x-cmd.c b/drivers/mfd/si476x-cmd.c
deleted file mode 100644
index 71ac2e8d16d0..000000000000
--- a/drivers/mfd/si476x-cmd.c
+++ /dev/null
@@ -1,1554 +0,0 @@
-/*
- * drivers/mfd/si476x-cmd.c -- Subroutines implementing command
- * protocol of si476x series of chips
- *
- * Copyright (C) 2012 Innovative Converged Devices(ICD)
- * Copyright (C) 2013 Andrey Smirnov
- *
- * Author: Andrey Smirnov <andrew.smirnov@gmail.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- */
-
-#include <linux/module.h>
-#include <linux/completion.h>
-#include <linux/delay.h>
-#include <linux/atomic.h>
-#include <linux/i2c.h>
-#include <linux/device.h>
-#include <linux/gpio.h>
-#include <linux/videodev2.h>
-
-#include <media/si476x.h>
-#include <linux/mfd/si476x-core.h>
-
-#define msb(x) ((u8)((u16) x >> 8))
-#define lsb(x) ((u8)((u16) x & 0x00FF))
-
-
-
-#define CMD_POWER_UP 0x01
-#define CMD_POWER_UP_A10_NRESP 1
-#define CMD_POWER_UP_A10_NARGS 5
-
-#define CMD_POWER_UP_A20_NRESP 1
-#define CMD_POWER_UP_A20_NARGS 5
-
-#define POWER_UP_DELAY_MS 110
-
-#define CMD_POWER_DOWN 0x11
-#define CMD_POWER_DOWN_A10_NRESP 1
-
-#define CMD_POWER_DOWN_A20_NRESP 1
-#define CMD_POWER_DOWN_A20_NARGS 1
-
-#define CMD_FUNC_INFO 0x12
-#define CMD_FUNC_INFO_NRESP 7
-
-#define CMD_SET_PROPERTY 0x13
-#define CMD_SET_PROPERTY_NARGS 5
-#define CMD_SET_PROPERTY_NRESP 1
-
-#define CMD_GET_PROPERTY 0x14
-#define CMD_GET_PROPERTY_NARGS 3
-#define CMD_GET_PROPERTY_NRESP 4
-
-#define CMD_AGC_STATUS 0x17
-#define CMD_AGC_STATUS_NRESP_A10 2
-#define CMD_AGC_STATUS_NRESP_A20 6
-
-#define PIN_CFG_BYTE(x) (0x7F & (x))
-#define CMD_DIG_AUDIO_PIN_CFG 0x18
-#define CMD_DIG_AUDIO_PIN_CFG_NARGS 4
-#define CMD_DIG_AUDIO_PIN_CFG_NRESP 5
-
-#define CMD_ZIF_PIN_CFG 0x19
-#define CMD_ZIF_PIN_CFG_NARGS 4
-#define CMD_ZIF_PIN_CFG_NRESP 5
-
-#define CMD_IC_LINK_GPO_CTL_PIN_CFG 0x1A
-#define CMD_IC_LINK_GPO_CTL_PIN_CFG_NARGS 4
-#define CMD_IC_LINK_GPO_CTL_PIN_CFG_NRESP 5
-
-#define CMD_ANA_AUDIO_PIN_CFG 0x1B
-#define CMD_ANA_AUDIO_PIN_CFG_NARGS 1
-#define CMD_ANA_AUDIO_PIN_CFG_NRESP 2
-
-#define CMD_INTB_PIN_CFG 0x1C
-#define CMD_INTB_PIN_CFG_NARGS 2
-#define CMD_INTB_PIN_CFG_A10_NRESP 6
-#define CMD_INTB_PIN_CFG_A20_NRESP 3
-
-#define CMD_FM_TUNE_FREQ 0x30
-#define CMD_FM_TUNE_FREQ_A10_NARGS 5
-#define CMD_FM_TUNE_FREQ_A20_NARGS 3
-#define CMD_FM_TUNE_FREQ_NRESP 1
-
-#define CMD_FM_RSQ_STATUS 0x32
-
-#define CMD_FM_RSQ_STATUS_A10_NARGS 1
-#define CMD_FM_RSQ_STATUS_A10_NRESP 17
-#define CMD_FM_RSQ_STATUS_A30_NARGS 1
-#define CMD_FM_RSQ_STATUS_A30_NRESP 23
-
-
-#define CMD_FM_SEEK_START 0x31
-#define CMD_FM_SEEK_START_NARGS 1
-#define CMD_FM_SEEK_START_NRESP 1
-
-#define CMD_FM_RDS_STATUS 0x36
-#define CMD_FM_RDS_STATUS_NARGS 1
-#define CMD_FM_RDS_STATUS_NRESP 16
-
-#define CMD_FM_RDS_BLOCKCOUNT 0x37
-#define CMD_FM_RDS_BLOCKCOUNT_NARGS 1
-#define CMD_FM_RDS_BLOCKCOUNT_NRESP 8
-
-#define CMD_FM_PHASE_DIVERSITY 0x38
-#define CMD_FM_PHASE_DIVERSITY_NARGS 1
-#define CMD_FM_PHASE_DIVERSITY_NRESP 1
-
-#define CMD_FM_PHASE_DIV_STATUS 0x39
-#define CMD_FM_PHASE_DIV_STATUS_NRESP 2
-
-#define CMD_AM_TUNE_FREQ 0x40
-#define CMD_AM_TUNE_FREQ_NARGS 3
-#define CMD_AM_TUNE_FREQ_NRESP 1
-
-#define CMD_AM_RSQ_STATUS 0x42
-#define CMD_AM_RSQ_STATUS_NARGS 1
-#define CMD_AM_RSQ_STATUS_NRESP 13
-
-#define CMD_AM_SEEK_START 0x41
-#define CMD_AM_SEEK_START_NARGS 1
-#define CMD_AM_SEEK_START_NRESP 1
-
-
-#define CMD_AM_ACF_STATUS 0x45
-#define CMD_AM_ACF_STATUS_NRESP 6
-#define CMD_AM_ACF_STATUS_NARGS 1
-
-#define CMD_FM_ACF_STATUS 0x35
-#define CMD_FM_ACF_STATUS_NRESP 8
-#define CMD_FM_ACF_STATUS_NARGS 1
-
-#define CMD_MAX_ARGS_COUNT (10)
-
-
-enum si476x_acf_status_report_bits {
- SI476X_ACF_BLEND_INT = (1 << 4),
- SI476X_ACF_HIBLEND_INT = (1 << 3),
- SI476X_ACF_HICUT_INT = (1 << 2),
- SI476X_ACF_CHBW_INT = (1 << 1),
- SI476X_ACF_SOFTMUTE_INT = (1 << 0),
-
- SI476X_ACF_SMUTE = (1 << 0),
- SI476X_ACF_SMATTN = 0b11111,
- SI476X_ACF_PILOT = (1 << 7),
- SI476X_ACF_STBLEND = ~SI476X_ACF_PILOT,
-};
-
-enum si476x_agc_status_report_bits {
- SI476X_AGC_MXHI = (1 << 5),
- SI476X_AGC_MXLO = (1 << 4),
- SI476X_AGC_LNAHI = (1 << 3),
- SI476X_AGC_LNALO = (1 << 2),
-};
-
-enum si476x_errors {
- SI476X_ERR_BAD_COMMAND = 0x10,
- SI476X_ERR_BAD_ARG1 = 0x11,
- SI476X_ERR_BAD_ARG2 = 0x12,
- SI476X_ERR_BAD_ARG3 = 0x13,
- SI476X_ERR_BAD_ARG4 = 0x14,
- SI476X_ERR_BUSY = 0x18,
- SI476X_ERR_BAD_INTERNAL_MEMORY = 0x20,
- SI476X_ERR_BAD_PATCH = 0x30,
- SI476X_ERR_BAD_BOOT_MODE = 0x31,
- SI476X_ERR_BAD_PROPERTY = 0x40,
-};
-
-static int si476x_core_parse_and_nag_about_error(struct si476x_core *core)
-{
- int err;
- char *cause;
- u8 buffer[2];
-
- if (core->revision != SI476X_REVISION_A10) {
- err = si476x_core_i2c_xfer(core, SI476X_I2C_RECV,
- buffer, sizeof(buffer));
- if (err == sizeof(buffer)) {
- switch (buffer[1]) {
- case SI476X_ERR_BAD_COMMAND:
- cause = "Bad command";
- err = -EINVAL;
- break;
- case SI476X_ERR_BAD_ARG1:
- cause = "Bad argument #1";
- err = -EINVAL;
- break;
- case SI476X_ERR_BAD_ARG2:
- cause = "Bad argument #2";
- err = -EINVAL;
- break;
- case SI476X_ERR_BAD_ARG3:
- cause = "Bad argument #3";
- err = -EINVAL;
- break;
- case SI476X_ERR_BAD_ARG4:
- cause = "Bad argument #4";
- err = -EINVAL;
- break;
- case SI476X_ERR_BUSY:
- cause = "Chip is busy";
- err = -EBUSY;
- break;
- case SI476X_ERR_BAD_INTERNAL_MEMORY:
- cause = "Bad internal memory";
- err = -EIO;
- break;
- case SI476X_ERR_BAD_PATCH:
- cause = "Bad patch";
- err = -EINVAL;
- break;
- case SI476X_ERR_BAD_BOOT_MODE:
- cause = "Bad boot mode";
- err = -EINVAL;
- break;
- case SI476X_ERR_BAD_PROPERTY:
- cause = "Bad property";
- err = -EINVAL;
- break;
- default:
- cause = "Unknown";
- err = -EIO;
- }
-
- dev_err(&core->client->dev,
- "[Chip error status]: %s\n", cause);
- } else {
- dev_err(&core->client->dev,
- "Failed to fetch error code\n");
- err = (err >= 0) ? -EIO : err;
- }
- } else {
- err = -EIO;
- }
-
- return err;
-}
-
-/**
- * si476x_core_send_command() - sends a command to si476x and waits its
- * response
- * @core: si476x_device structure for the device we are
- * communicating with
- * @command: command id
- * @args: command arguments we are sending
- * @argn: actual size of @args
- * @response: buffer to place the expected response from the device
- * @respn: actual size of @response
- * @usecs: amount of time to wait before reading the response (in
- * usecs)
- *
- * Function returns 0 on succsess and negative error code on
- * failure
- */
-static int si476x_core_send_command(struct si476x_core *core,
- const u8 command,
- const u8 args[],
- const int argn,
- u8 resp[],
- const int respn,
- const int usecs)
-{
- struct i2c_client *client = core->client;
- int err;
- u8 data[CMD_MAX_ARGS_COUNT + 1];
-
- if (argn > CMD_MAX_ARGS_COUNT) {
- err = -ENOMEM;
- goto exit;
- }
-
- if (!client->adapter) {
- err = -ENODEV;
- goto exit;
- }
-
- /* First send the command and its arguments */
- data[0] = command;
- memcpy(&data[1], args, argn);
- dev_dbg(&client->dev, "Command:\n %*ph\n", argn + 1, data);
-
- err = si476x_core_i2c_xfer(core, SI476X_I2C_SEND,
- (char *) data, argn + 1);
- if (err != argn + 1) {
- dev_err(&core->client->dev,
- "Error while sending command 0x%02x\n",
- command);
- err = (err >= 0) ? -EIO : err;
- goto exit;
- }
- /* Set CTS to zero only after the command is send to avoid
- * possible racing conditions when working in polling mode */
- atomic_set(&core->cts, 0);
-
- /* if (unlikely(command == CMD_POWER_DOWN) */
- if (!wait_event_timeout(core->command,
- atomic_read(&core->cts),
- usecs_to_jiffies(usecs) + 1))
- dev_warn(&core->client->dev,
- "(%s) [CMD 0x%02x] Answer timeout.\n",
- __func__, command);
-
- /*
- When working in polling mode, for some reason the tuner will
- report CTS bit as being set in the first status byte read,
- but all the consequtive ones will return zeros until the
- tuner is actually completed the POWER_UP command. To
- workaround that we wait for second CTS to be reported
- */
- if (unlikely(!core->client->irq && command == CMD_POWER_UP)) {
- if (!wait_event_timeout(core->command,
- atomic_read(&core->cts),
- usecs_to_jiffies(usecs) + 1))
- dev_warn(&core->client->dev,
- "(%s) Power up took too much time.\n",
- __func__);
- }
-
- /* Then get the response */
- err = si476x_core_i2c_xfer(core, SI476X_I2C_RECV, resp, respn);
- if (err != respn) {
- dev_err(&core->client->dev,
- "Error while reading response for command 0x%02x\n",
- command);
- err = (err >= 0) ? -EIO : err;
- goto exit;
- }
- dev_dbg(&client->dev, "Response:\n %*ph\n", respn, resp);
-
- err = 0;
-
- if (resp[0] & SI476X_ERR) {
- dev_err(&core->client->dev,
- "[CMD 0x%02x] Chip set error flag\n", command);
- err = si476x_core_parse_and_nag_about_error(core);
- goto exit;
- }
-
- if (!(resp[0] & SI476X_CTS))
- err = -EBUSY;
-exit:
- return err;
-}
-
-static int si476x_cmd_clear_stc(struct si476x_core *core)
-{
- int err;
- struct si476x_rsq_status_args args = {
- .primary = false,
- .rsqack = false,
- .attune = false,
- .cancel = false,
- .stcack = true,
- };
-
- switch (core->power_up_parameters.func) {
- case SI476X_FUNC_FM_RECEIVER:
- err = si476x_core_cmd_fm_rsq_status(core, &args, NULL);
- break;
- case SI476X_FUNC_AM_RECEIVER:
- err = si476x_core_cmd_am_rsq_status(core, &args, NULL);
- break;
- default:
- err = -EINVAL;
- }
-
- return err;
-}
-
-static int si476x_cmd_tune_seek_freq(struct si476x_core *core,
- uint8_t cmd,
- const uint8_t args[], size_t argn,
- uint8_t *resp, size_t respn)
-{
- int err;
-
-
- atomic_set(&core->stc, 0);
- err = si476x_core_send_command(core, cmd, args, argn, resp, respn,
- SI476X_TIMEOUT_TUNE);
- if (!err) {
- wait_event_killable(core->tuning,
- atomic_read(&core->stc));
- si476x_cmd_clear_stc(core);
- }
-
- return err;
-}
-
-/**
- * si476x_cmd_func_info() - send 'FUNC_INFO' command to the device
- * @core: device to send the command to
- * @info: struct si476x_func_info to fill all the information
- * returned by the command
- *
- * The command requests the firmware and patch version for currently
- * loaded firmware (dependent on the function of the device FM/AM/WB)
- *
- * Function returns 0 on succsess and negative error code on
- * failure
- */
-int si476x_core_cmd_func_info(struct si476x_core *core,
- struct si476x_func_info *info)
-{
- int err;
- u8 resp[CMD_FUNC_INFO_NRESP];
-
- err = si476x_core_send_command(core, CMD_FUNC_INFO,
- NULL, 0,
- resp, ARRAY_SIZE(resp),
- SI476X_DEFAULT_TIMEOUT);
-
- info->firmware.major = resp[1];
- info->firmware.minor[0] = resp[2];
- info->firmware.minor[1] = resp[3];
-
- info->patch_id = ((u16) resp[4] << 8) | resp[5];
- info->func = resp[6];
-
- return err;
-}
-EXPORT_SYMBOL_GPL(si476x_core_cmd_func_info);
-
-/**
- * si476x_cmd_set_property() - send 'SET_PROPERTY' command to the device
- * @core: device to send the command to
- * @property: property address
- * @value: property value
- *
- * Function returns 0 on succsess and negative error code on
- * failure
- */
-int si476x_core_cmd_set_property(struct si476x_core *core,
- u16 property, u16 value)
-{
- u8 resp[CMD_SET_PROPERTY_NRESP];
- const u8 args[CMD_SET_PROPERTY_NARGS] = {
- 0x00,
- msb(property),
- lsb(property),
- msb(value),
- lsb(value),
- };
-
- return si476x_core_send_command(core, CMD_SET_PROPERTY,
- args, ARRAY_SIZE(args),
- resp, ARRAY_SIZE(resp),
- SI476X_DEFAULT_TIMEOUT);
-}
-EXPORT_SYMBOL_GPL(si476x_core_cmd_set_property);
-
-/**
- * si476x_cmd_get_property() - send 'GET_PROPERTY' command to the device
- * @core: device to send the command to
- * @property: property address
- *
- * Function return the value of property as u16 on success or a
- * negative error on failure
- */
-int si476x_core_cmd_get_property(struct si476x_core *core, u16 property)
-{
- int err;
- u8 resp[CMD_GET_PROPERTY_NRESP];
- const u8 args[CMD_GET_PROPERTY_NARGS] = {
- 0x00,
- msb(property),
- lsb(property),
- };
-
- err = si476x_core_send_command(core, CMD_GET_PROPERTY,
- args, ARRAY_SIZE(args),
- resp, ARRAY_SIZE(resp),
- SI476X_DEFAULT_TIMEOUT);
- if (err < 0)
- return err;
- else
- return be16_to_cpup((__be16 *)(resp + 2));
-}
-EXPORT_SYMBOL_GPL(si476x_core_cmd_get_property);
-
-/**
- * si476x_cmd_dig_audio_pin_cfg() - send 'DIG_AUDIO_PIN_CFG' command to
- * the device
- * @core: device to send the command to
- * @dclk: DCLK pin function configuration:
- * #SI476X_DCLK_NOOP - do not modify the behaviour
- * #SI476X_DCLK_TRISTATE - put the pin in tristate condition,
- * enable 1MOhm pulldown
- * #SI476X_DCLK_DAUDIO - set the pin to be a part of digital
- * audio interface
- * @dfs: DFS pin function configuration:
- * #SI476X_DFS_NOOP - do not modify the behaviour
- * #SI476X_DFS_TRISTATE - put the pin in tristate condition,
- * enable 1MOhm pulldown
- * SI476X_DFS_DAUDIO - set the pin to be a part of digital
- * audio interface
- * @dout - DOUT pin function configuration:
- * SI476X_DOUT_NOOP - do not modify the behaviour
- * SI476X_DOUT_TRISTATE - put the pin in tristate condition,
- * enable 1MOhm pulldown
- * SI476X_DOUT_I2S_OUTPUT - set this pin to be digital out on I2S
- * port 1
- * SI476X_DOUT_I2S_INPUT - set this pin to be digital in on I2S
- * port 1
- * @xout - XOUT pin function configuration:
- * SI476X_XOUT_NOOP - do not modify the behaviour
- * SI476X_XOUT_TRISTATE - put the pin in tristate condition,
- * enable 1MOhm pulldown
- * SI476X_XOUT_I2S_INPUT - set this pin to be digital in on I2S
- * port 1
- * SI476X_XOUT_MODE_SELECT - set this pin to be the input that
- * selects the mode of the I2S audio
- * combiner (analog or HD)
- * [SI4761/63/65/67 Only]
- *
- * Function returns 0 on success and negative error code on failure
- */
-int si476x_core_cmd_dig_audio_pin_cfg(struct si476x_core *core,
- enum si476x_dclk_config dclk,
- enum si476x_dfs_config dfs,
- enum si476x_dout_config dout,
- enum si476x_xout_config xout)
-{
- u8 resp[CMD_DIG_AUDIO_PIN_CFG_NRESP];
- const u8 args[CMD_DIG_AUDIO_PIN_CFG_NARGS] = {
- PIN_CFG_BYTE(dclk),
- PIN_CFG_BYTE(dfs),
- PIN_CFG_BYTE(dout),
- PIN_CFG_BYTE(xout),
- };
-
- return si476x_core_send_command(core, CMD_DIG_AUDIO_PIN_CFG,
- args, ARRAY_SIZE(args),
- resp, ARRAY_SIZE(resp),
- SI476X_DEFAULT_TIMEOUT);
-}
-EXPORT_SYMBOL_GPL(si476x_core_cmd_dig_audio_pin_cfg);
-
-/**
- * si476x_cmd_zif_pin_cfg - send 'ZIF_PIN_CFG_COMMAND'
- * @core - device to send the command to
- * @iqclk - IQCL pin function configuration:
- * SI476X_IQCLK_NOOP - do not modify the behaviour
- * SI476X_IQCLK_TRISTATE - put the pin in tristate condition,
- * enable 1MOhm pulldown
- * SI476X_IQCLK_IQ - set pin to be a part of I/Q interace
- * in master mode
- * @iqfs - IQFS pin function configuration:
- * SI476X_IQFS_NOOP - do not modify the behaviour
- * SI476X_IQFS_TRISTATE - put the pin in tristate condition,
- * enable 1MOhm pulldown
- * SI476X_IQFS_IQ - set pin to be a part of I/Q interace
- * in master mode
- * @iout - IOUT pin function configuration:
- * SI476X_IOUT_NOOP - do not modify the behaviour
- * SI476X_IOUT_TRISTATE - put the pin in tristate condition,
- * enable 1MOhm pulldown
- * SI476X_IOUT_OUTPUT - set pin to be I out
- * @qout - QOUT pin function configuration:
- * SI476X_QOUT_NOOP - do not modify the behaviour
- * SI476X_QOUT_TRISTATE - put the pin in tristate condition,
- * enable 1MOhm pulldown
- * SI476X_QOUT_OUTPUT - set pin to be Q out
- *
- * Function returns 0 on success and negative error code on failure
- */
-int si476x_core_cmd_zif_pin_cfg(struct si476x_core *core,
- enum si476x_iqclk_config iqclk,
- enum si476x_iqfs_config iqfs,
- enum si476x_iout_config iout,
- enum si476x_qout_config qout)
-{
- u8 resp[CMD_ZIF_PIN_CFG_NRESP];
- const u8 args[CMD_ZIF_PIN_CFG_NARGS] = {
- PIN_CFG_BYTE(iqclk),
- PIN_CFG_BYTE(iqfs),
- PIN_CFG_BYTE(iout),
- PIN_CFG_BYTE(qout),
- };
-
- return si476x_core_send_command(core, CMD_ZIF_PIN_CFG,
- args, ARRAY_SIZE(args),
- resp, ARRAY_SIZE(resp),
- SI476X_DEFAULT_TIMEOUT);
-}
-EXPORT_SYMBOL_GPL(si476x_core_cmd_zif_pin_cfg);
-
-/**
- * si476x_cmd_ic_link_gpo_ctl_pin_cfg - send
- * 'IC_LINK_GPIO_CTL_PIN_CFG' comand to the device
- * @core - device to send the command to
- * @icin - ICIN pin function configuration:
- * SI476X_ICIN_NOOP - do not modify the behaviour
- * SI476X_ICIN_TRISTATE - put the pin in tristate condition,
- * enable 1MOhm pulldown
- * SI476X_ICIN_GPO1_HIGH - set pin to be an output, drive it high
- * SI476X_ICIN_GPO1_LOW - set pin to be an output, drive it low
- * SI476X_ICIN_IC_LINK - set the pin to be a part of Inter-Chip link
- * @icip - ICIP pin function configuration:
- * SI476X_ICIP_NOOP - do not modify the behaviour
- * SI476X_ICIP_TRISTATE - put the pin in tristate condition,
- * enable 1MOhm pulldown
- * SI476X_ICIP_GPO1_HIGH - set pin to be an output, drive it high
- * SI476X_ICIP_GPO1_LOW - set pin to be an output, drive it low
- * SI476X_ICIP_IC_LINK - set the pin to be a part of Inter-Chip link
- * @icon - ICON pin function configuration:
- * SI476X_ICON_NOOP - do not modify the behaviour
- * SI476X_ICON_TRISTATE - put the pin in tristate condition,
- * enable 1MOhm pulldown
- * SI476X_ICON_I2S - set the pin to be a part of audio
- * interface in slave mode (DCLK)
- * SI476X_ICON_IC_LINK - set the pin to be a part of Inter-Chip link
- * @icop - ICOP pin function configuration:
- * SI476X_ICOP_NOOP - do not modify the behaviour
- * SI476X_ICOP_TRISTATE - put the pin in tristate condition,
- * enable 1MOhm pulldown
- * SI476X_ICOP_I2S - set the pin to be a part of audio
- * interface in slave mode (DOUT)
- * [Si4761/63/65/67 Only]
- * SI476X_ICOP_IC_LINK - set the pin to be a part of Inter-Chip link
- *
- * Function returns 0 on success and negative error code on failure
- */
-int si476x_core_cmd_ic_link_gpo_ctl_pin_cfg(struct si476x_core *core,
- enum si476x_icin_config icin,
- enum si476x_icip_config icip,
- enum si476x_icon_config icon,
- enum si476x_icop_config icop)
-{
- u8 resp[CMD_IC_LINK_GPO_CTL_PIN_CFG_NRESP];
- const u8 args[CMD_IC_LINK_GPO_CTL_PIN_CFG_NARGS] = {
- PIN_CFG_BYTE(icin),
- PIN_CFG_BYTE(icip),
- PIN_CFG_BYTE(icon),
- PIN_CFG_BYTE(icop),
- };
-
- return si476x_core_send_command(core, CMD_IC_LINK_GPO_CTL_PIN_CFG,
- args, ARRAY_SIZE(args),
- resp, ARRAY_SIZE(resp),
- SI476X_DEFAULT_TIMEOUT);
-}
-EXPORT_SYMBOL_GPL(si476x_core_cmd_ic_link_gpo_ctl_pin_cfg);
-
-/**
- * si476x_cmd_ana_audio_pin_cfg - send 'ANA_AUDIO_PIN_CFG' to the
- * device
- * @core - device to send the command to
- * @lrout - LROUT pin function configuration:
- * SI476X_LROUT_NOOP - do not modify the behaviour
- * SI476X_LROUT_TRISTATE - put the pin in tristate condition,
- * enable 1MOhm pulldown
- * SI476X_LROUT_AUDIO - set pin to be audio output
- * SI476X_LROUT_MPX - set pin to be MPX output
- *
- * Function returns 0 on success and negative error code on failure
- */
-int si476x_core_cmd_ana_audio_pin_cfg(struct si476x_core *core,
- enum si476x_lrout_config lrout)
-{
- u8 resp[CMD_ANA_AUDIO_PIN_CFG_NRESP];
- const u8 args[CMD_ANA_AUDIO_PIN_CFG_NARGS] = {
- PIN_CFG_BYTE(lrout),
- };
-
- return si476x_core_send_command(core, CMD_ANA_AUDIO_PIN_CFG,
- args, ARRAY_SIZE(args),
- resp, ARRAY_SIZE(resp),
- SI476X_DEFAULT_TIMEOUT);
-}
-EXPORT_SYMBOL_GPL(si476x_core_cmd_ana_audio_pin_cfg);
-
-
-/**
- * si476x_cmd_intb_pin_cfg - send 'INTB_PIN_CFG' command to the device
- * @core - device to send the command to
- * @intb - INTB pin function configuration:
- * SI476X_INTB_NOOP - do not modify the behaviour
- * SI476X_INTB_TRISTATE - put the pin in tristate condition,
- * enable 1MOhm pulldown
- * SI476X_INTB_DAUDIO - set pin to be a part of digital
- * audio interface in slave mode
- * SI476X_INTB_IRQ - set pin to be an interrupt request line
- * @a1 - A1 pin function configuration:
- * SI476X_A1_NOOP - do not modify the behaviour
- * SI476X_A1_TRISTATE - put the pin in tristate condition,
- * enable 1MOhm pulldown
- * SI476X_A1_IRQ - set pin to be an interrupt request line
- *
- * Function returns 0 on success and negative error code on failure
- */
-static int si476x_core_cmd_intb_pin_cfg_a10(struct si476x_core *core,
- enum si476x_intb_config intb,
- enum si476x_a1_config a1)
-{
- u8 resp[CMD_INTB_PIN_CFG_A10_NRESP];
- const u8 args[CMD_INTB_PIN_CFG_NARGS] = {
- PIN_CFG_BYTE(intb),
- PIN_CFG_BYTE(a1),
- };
-
- return si476x_core_send_command(core, CMD_INTB_PIN_CFG,
- args, ARRAY_SIZE(args),
- resp, ARRAY_SIZE(resp),
- SI476X_DEFAULT_TIMEOUT);
-}
-
-static int si476x_core_cmd_intb_pin_cfg_a20(struct si476x_core *core,
- enum si476x_intb_config intb,
- enum si476x_a1_config a1)
-{
- u8 resp[CMD_INTB_PIN_CFG_A20_NRESP];
- const u8 args[CMD_INTB_PIN_CFG_NARGS] = {
- PIN_CFG_BYTE(intb),
- PIN_CFG_BYTE(a1),
- };
-
- return si476x_core_send_command(core, CMD_INTB_PIN_CFG,
- args, ARRAY_SIZE(args),
- resp, ARRAY_SIZE(resp),
- SI476X_DEFAULT_TIMEOUT);
-}
-
-
-
-/**
- * si476x_cmd_am_rsq_status - send 'AM_RSQ_STATUS' command to the
- * device
- * @core - device to send the command to
- * @rsqack - if set command clears RSQINT, SNRINT, SNRLINT, RSSIHINT,
- * RSSSILINT, BLENDINT, MULTHINT and MULTLINT
- * @attune - when set the values in the status report are the values
- * that were calculated at tune
- * @cancel - abort ongoing seek/tune opertation
- * @stcack - clear the STCINT bin in status register
- * @report - all signal quality information retured by the command
- * (if NULL then the output of the command is ignored)
- *
- * Function returns 0 on success and negative error code on failure
- */
-int si476x_core_cmd_am_rsq_status(struct si476x_core *core,
- struct si476x_rsq_status_args *rsqargs,
- struct si476x_rsq_status_report *report)
-{
- int err;
- u8 resp[CMD_AM_RSQ_STATUS_NRESP];
- const u8 args[CMD_AM_RSQ_STATUS_NARGS] = {
- rsqargs->rsqack << 3 | rsqargs->attune << 2 |
- rsqargs->cancel << 1 | rsqargs->stcack,
- };
-
- err = si476x_core_send_command(core, CMD_AM_RSQ_STATUS,
- args, ARRAY_SIZE(args),
- resp, ARRAY_SIZE(resp),
- SI476X_DEFAULT_TIMEOUT);
- /*
- * Besides getting received signal quality information this
- * command can be used to just acknowledge different interrupt
- * flags in those cases it is useless to copy and parse
- * received data so user can pass NULL, and thus avoid
- * unnecessary copying.
- */
- if (!report)
- return err;
-
- report->snrhint = 0b00001000 & resp[1];
- report->snrlint = 0b00000100 & resp[1];
- report->rssihint = 0b00000010 & resp[1];
- report->rssilint = 0b00000001 & resp[1];
-
- report->bltf = 0b10000000 & resp[2];
- report->snr_ready = 0b00100000 & resp[2];
- report->rssiready = 0b00001000 & resp[2];
- report->afcrl = 0b00000010 & resp[2];
- report->valid = 0b00000001 & resp[2];
-
- report->readfreq = be16_to_cpup((__be16 *)(resp + 3));
- report->freqoff = resp[5];
- report->rssi = resp[6];
- report->snr = resp[7];
- report->lassi = resp[9];
- report->hassi = resp[10];
- report->mult = resp[11];
- report->dev = resp[12];
-
- return err;
-}
-EXPORT_SYMBOL_GPL(si476x_core_cmd_am_rsq_status);
-
-int si476x_core_cmd_fm_acf_status(struct si476x_core *core,
- struct si476x_acf_status_report *report)
-{
- int err;
- u8 resp[CMD_FM_ACF_STATUS_NRESP];
- const u8 args[CMD_FM_ACF_STATUS_NARGS] = {
- 0x0,
- };
-
- if (!report)
- return -EINVAL;
-
- err = si476x_core_send_command(core, CMD_FM_ACF_STATUS,
- args, ARRAY_SIZE(args),
- resp, ARRAY_SIZE(resp),
- SI476X_DEFAULT_TIMEOUT);
- if (err < 0)
- return err;
-
- report->blend_int = resp[1] & SI476X_ACF_BLEND_INT;
- report->hblend_int = resp[1] & SI476X_ACF_HIBLEND_INT;
- report->hicut_int = resp[1] & SI476X_ACF_HICUT_INT;
- report->chbw_int = resp[1] & SI476X_ACF_CHBW_INT;
- report->softmute_int = resp[1] & SI476X_ACF_SOFTMUTE_INT;
- report->smute = resp[2] & SI476X_ACF_SMUTE;
- report->smattn = resp[3] & SI476X_ACF_SMATTN;
- report->chbw = resp[4];
- report->hicut = resp[5];
- report->hiblend = resp[6];
- report->pilot = resp[7] & SI476X_ACF_PILOT;
- report->stblend = resp[7] & SI476X_ACF_STBLEND;
-
- return err;
-}
-EXPORT_SYMBOL_GPL(si476x_core_cmd_fm_acf_status);
-
-int si476x_core_cmd_am_acf_status(struct si476x_core *core,
- struct si476x_acf_status_report *report)
-{
- int err;
- u8 resp[CMD_AM_ACF_STATUS_NRESP];
- const u8 args[CMD_AM_ACF_STATUS_NARGS] = {
- 0x0,
- };
-
- if (!report)
- return -EINVAL;
-
- err = si476x_core_send_command(core, CMD_AM_ACF_STATUS,
- args, ARRAY_SIZE(args),
- resp, ARRAY_SIZE(resp),
- SI476X_DEFAULT_TIMEOUT);
- if (err < 0)
- return err;
-
- report->blend_int = resp[1] & SI476X_ACF_BLEND_INT;
- report->hblend_int = resp[1] & SI476X_ACF_HIBLEND_INT;
- report->hicut_int = resp[1] & SI476X_ACF_HICUT_INT;
- report->chbw_int = resp[1] & SI476X_ACF_CHBW_INT;
- report->softmute_int = resp[1] & SI476X_ACF_SOFTMUTE_INT;
- report->smute = resp[2] & SI476X_ACF_SMUTE;
- report->smattn = resp[3] & SI476X_ACF_SMATTN;
- report->chbw = resp[4];
- report->hicut = resp[5];
-
- return err;
-}
-EXPORT_SYMBOL_GPL(si476x_core_cmd_am_acf_status);
-
-
-/**
- * si476x_cmd_fm_seek_start - send 'FM_SEEK_START' command to the
- * device
- * @core - device to send the command to
- * @seekup - if set the direction of the search is 'up'
- * @wrap - if set seek wraps when hitting band limit
- *
- * This function begins search for a valid station. The station is
- * considered valid when 'FM_VALID_SNR_THRESHOLD' and
- * 'FM_VALID_RSSI_THRESHOLD' and 'FM_VALID_MAX_TUNE_ERROR' criteria
- * are met.
-} *
- * Function returns 0 on success and negative error code on failure
- */
-int si476x_core_cmd_fm_seek_start(struct si476x_core *core,
- bool seekup, bool wrap)
-{
- u8 resp[CMD_FM_SEEK_START_NRESP];
- const u8 args[CMD_FM_SEEK_START_NARGS] = {
- seekup << 3 | wrap << 2,
- };
-
- return si476x_cmd_tune_seek_freq(core, CMD_FM_SEEK_START,
- args, sizeof(args),
- resp, sizeof(resp));
-}
-EXPORT_SYMBOL_GPL(si476x_core_cmd_fm_seek_start);
-
-/**
- * si476x_cmd_fm_rds_status - send 'FM_RDS_STATUS' command to the
- * device
- * @core - device to send the command to
- * @status_only - if set the data is not removed from RDSFIFO,
- * RDSFIFOUSED is not decremented and data in all the
- * rest RDS data contains the last valid info received
- * @mtfifo if set the command clears RDS receive FIFO
- * @intack if set the command clards the RDSINT bit.
- *
- * Function returns 0 on success and negative error code on failure
- */
-int si476x_core_cmd_fm_rds_status(struct si476x_core *core,
- bool status_only,
- bool mtfifo,
- bool intack,
- struct si476x_rds_status_report *report)
-{
- int err;
- u8 resp[CMD_FM_RDS_STATUS_NRESP];
- const u8 args[CMD_FM_RDS_STATUS_NARGS] = {
- status_only << 2 | mtfifo << 1 | intack,
- };
-
- err = si476x_core_send_command(core, CMD_FM_RDS_STATUS,
- args, ARRAY_SIZE(args),
- resp, ARRAY_SIZE(resp),
- SI476X_DEFAULT_TIMEOUT);
- /*
- * Besides getting RDS status information this command can be
- * used to just acknowledge different interrupt flags in those
- * cases it is useless to copy and parse received data so user
- * can pass NULL, and thus avoid unnecessary copying.
- */
- if (err < 0 || report == NULL)
- return err;
-
- report->rdstpptyint = 0b00010000 & resp[1];
- report->rdspiint = 0b00001000 & resp[1];
- report->rdssyncint = 0b00000010 & resp[1];
- report->rdsfifoint = 0b00000001 & resp[1];
-
- report->tpptyvalid = 0b00010000 & resp[2];
- report->pivalid = 0b00001000 & resp[2];
- report->rdssync = 0b00000010 & resp[2];
- report->rdsfifolost = 0b00000001 & resp[2];
-
- report->tp = 0b00100000 & resp[3];
- report->pty = 0b00011111 & resp[3];
-
- report->pi = be16_to_cpup((__be16 *)(resp + 4));
- report->rdsfifoused = resp[6];
-
- report->ble[V4L2_RDS_BLOCK_A] = 0b11000000 & resp[7];
- report->ble[V4L2_RDS_BLOCK_B] = 0b00110000 & resp[7];
- report->ble[V4L2_RDS_BLOCK_C] = 0b00001100 & resp[7];
- report->ble[V4L2_RDS_BLOCK_D] = 0b00000011 & resp[7];
-
- report->rds[V4L2_RDS_BLOCK_A].block = V4L2_RDS_BLOCK_A;
- report->rds[V4L2_RDS_BLOCK_A].msb = resp[8];
- report->rds[V4L2_RDS_BLOCK_A].lsb = resp[9];
-
- report->rds[V4L2_RDS_BLOCK_B].block = V4L2_RDS_BLOCK_B;
- report->rds[V4L2_RDS_BLOCK_B].msb = resp[10];
- report->rds[V4L2_RDS_BLOCK_B].lsb = resp[11];
-
- report->rds[V4L2_RDS_BLOCK_C].block = V4L2_RDS_BLOCK_C;
- report->rds[V4L2_RDS_BLOCK_C].msb = resp[12];
- report->rds[V4L2_RDS_BLOCK_C].lsb = resp[13];
-
- report->rds[V4L2_RDS_BLOCK_D].block = V4L2_RDS_BLOCK_D;
- report->rds[V4L2_RDS_BLOCK_D].msb = resp[14];
- report->rds[V4L2_RDS_BLOCK_D].lsb = resp[15];
-
- return err;
-}
-EXPORT_SYMBOL_GPL(si476x_core_cmd_fm_rds_status);
-
-int si476x_core_cmd_fm_rds_blockcount(struct si476x_core *core,
- bool clear,
- struct si476x_rds_blockcount_report *report)
-{
- int err;
- u8 resp[CMD_FM_RDS_BLOCKCOUNT_NRESP];
- const u8 args[CMD_FM_RDS_BLOCKCOUNT_NARGS] = {
- clear,
- };
-
- if (!report)
- return -EINVAL;
-
- err = si476x_core_send_command(core, CMD_FM_RDS_BLOCKCOUNT,
- args, ARRAY_SIZE(args),
- resp, ARRAY_SIZE(resp),
- SI476X_DEFAULT_TIMEOUT);
-
- if (!err) {
- report->expected = be16_to_cpup((__be16 *)(resp + 2));
- report->received = be16_to_cpup((__be16 *)(resp + 4));
- report->uncorrectable = be16_to_cpup((__be16 *)(resp + 6));
- }
-
- return err;
-}
-EXPORT_SYMBOL_GPL(si476x_core_cmd_fm_rds_blockcount);
-
-int si476x_core_cmd_fm_phase_diversity(struct si476x_core *core,
- enum si476x_phase_diversity_mode mode)
-{
- u8 resp[CMD_FM_PHASE_DIVERSITY_NRESP];
- const u8 args[CMD_FM_PHASE_DIVERSITY_NARGS] = {
- mode & 0b111,
- };
-
- return si476x_core_send_command(core, CMD_FM_PHASE_DIVERSITY,
- args, ARRAY_SIZE(args),
- resp, ARRAY_SIZE(resp),
- SI476X_DEFAULT_TIMEOUT);
-}
-EXPORT_SYMBOL_GPL(si476x_core_cmd_fm_phase_diversity);
-/**
- * si476x_core_cmd_fm_phase_div_status() - get the phase diversity
- * status
- *
- * @core: si476x device
- *
- * NOTE caller must hold core lock
- *
- * Function returns the value of the status bit in case of success and
- * negative error code in case of failre.
- */
-int si476x_core_cmd_fm_phase_div_status(struct si476x_core *core)
-{
- int err;
- u8 resp[CMD_FM_PHASE_DIV_STATUS_NRESP];
-
- err = si476x_core_send_command(core, CMD_FM_PHASE_DIV_STATUS,
- NULL, 0,
- resp, ARRAY_SIZE(resp),
- SI476X_DEFAULT_TIMEOUT);
-
- return (err < 0) ? err : resp[1];
-}
-EXPORT_SYMBOL_GPL(si476x_core_cmd_fm_phase_div_status);
-
-
-/**
- * si476x_cmd_am_seek_start - send 'FM_SEEK_START' command to the
- * device
- * @core - device to send the command to
- * @seekup - if set the direction of the search is 'up'
- * @wrap - if set seek wraps when hitting band limit
- *
- * This function begins search for a valid station. The station is
- * considered valid when 'FM_VALID_SNR_THRESHOLD' and
- * 'FM_VALID_RSSI_THRESHOLD' and 'FM_VALID_MAX_TUNE_ERROR' criteria
- * are met.
- *
- * Function returns 0 on success and negative error code on failure
- */
-int si476x_core_cmd_am_seek_start(struct si476x_core *core,
- bool seekup, bool wrap)
-{
- u8 resp[CMD_AM_SEEK_START_NRESP];
- const u8 args[CMD_AM_SEEK_START_NARGS] = {
- seekup << 3 | wrap << 2,
- };
-
- return si476x_cmd_tune_seek_freq(core, CMD_AM_SEEK_START,
- args, sizeof(args),
- resp, sizeof(resp));
-}
-EXPORT_SYMBOL_GPL(si476x_core_cmd_am_seek_start);
-
-
-
-static int si476x_core_cmd_power_up_a10(struct si476x_core *core,
- struct si476x_power_up_args *puargs)
-{
- u8 resp[CMD_POWER_UP_A10_NRESP];
- const bool intsel = (core->pinmux.a1 == SI476X_A1_IRQ);
- const bool ctsen = (core->client->irq != 0);
- const u8 args[CMD_POWER_UP_A10_NARGS] = {
- 0xF7, /* Reserved, always 0xF7 */
- 0x3F & puargs->xcload, /* First two bits are reserved to be
- * zeros */
- ctsen << 7 | intsel << 6 | 0x07, /* Last five bits
- * are reserved to
- * be written as 0x7 */
- puargs->func << 4 | puargs->freq,
- 0x11, /* Reserved, always 0x11 */
- };
-
- return si476x_core_send_command(core, CMD_POWER_UP,
- args, ARRAY_SIZE(args),
- resp, ARRAY_SIZE(resp),
- SI476X_TIMEOUT_POWER_UP);
-}
-
-static int si476x_core_cmd_power_up_a20(struct si476x_core *core,
- struct si476x_power_up_args *puargs)
-{
- u8 resp[CMD_POWER_UP_A20_NRESP];
- const bool intsel = (core->pinmux.a1 == SI476X_A1_IRQ);
- const bool ctsen = (core->client->irq != 0);
- const u8 args[CMD_POWER_UP_A20_NARGS] = {
- puargs->ibias6x << 7 | puargs->xstart,
- 0x3F & puargs->xcload, /* First two bits are reserved to be
- * zeros */
- ctsen << 7 | intsel << 6 | puargs->fastboot << 5 |
- puargs->xbiashc << 3 | puargs->xbias,
- puargs->func << 4 | puargs->freq,
- 0x10 | puargs->xmode,
- };
-
- return si476x_core_send_command(core, CMD_POWER_UP,
- args, ARRAY_SIZE(args),
- resp, ARRAY_SIZE(resp),
- SI476X_TIMEOUT_POWER_UP);
-}
-
-static int si476x_core_cmd_power_down_a10(struct si476x_core *core,
- struct si476x_power_down_args *pdargs)
-{
- u8 resp[CMD_POWER_DOWN_A10_NRESP];
-
- return si476x_core_send_command(core, CMD_POWER_DOWN,
- NULL, 0,
- resp, ARRAY_SIZE(resp),
- SI476X_DEFAULT_TIMEOUT);
-}
-
-static int si476x_core_cmd_power_down_a20(struct si476x_core *core,
- struct si476x_power_down_args *pdargs)
-{
- u8 resp[CMD_POWER_DOWN_A20_NRESP];
- const u8 args[CMD_POWER_DOWN_A20_NARGS] = {
- pdargs->xosc,
- };
- return si476x_core_send_command(core, CMD_POWER_DOWN,
- args, ARRAY_SIZE(args),
- resp, ARRAY_SIZE(resp),
- SI476X_DEFAULT_TIMEOUT);
-}
-
-static int si476x_core_cmd_am_tune_freq_a10(struct si476x_core *core,
- struct si476x_tune_freq_args *tuneargs)
-{
-
- const int am_freq = tuneargs->freq;
- u8 resp[CMD_AM_TUNE_FREQ_NRESP];
- const u8 args[CMD_AM_TUNE_FREQ_NARGS] = {
- (tuneargs->hd << 6),
- msb(am_freq),
- lsb(am_freq),
- };
-
- return si476x_cmd_tune_seek_freq(core, CMD_AM_TUNE_FREQ, args,
- sizeof(args),
- resp, sizeof(resp));
-}
-
-static int si476x_core_cmd_am_tune_freq_a20(struct si476x_core *core,
- struct si476x_tune_freq_args *tuneargs)
-{
- const int am_freq = tuneargs->freq;
- u8 resp[CMD_AM_TUNE_FREQ_NRESP];
- const u8 args[CMD_AM_TUNE_FREQ_NARGS] = {
- (tuneargs->zifsr << 6) | (tuneargs->injside & 0b11),
- msb(am_freq),
- lsb(am_freq),
- };
-
- return si476x_cmd_tune_seek_freq(core, CMD_AM_TUNE_FREQ,
- args, sizeof(args),
- resp, sizeof(resp));
-}
-
-static int si476x_core_cmd_fm_rsq_status_a10(struct si476x_core *core,
- struct si476x_rsq_status_args *rsqargs,
- struct si476x_rsq_status_report *report)
-{
- int err;
- u8 resp[CMD_FM_RSQ_STATUS_A10_NRESP];
- const u8 args[CMD_FM_RSQ_STATUS_A10_NARGS] = {
- rsqargs->rsqack << 3 | rsqargs->attune << 2 |
- rsqargs->cancel << 1 | rsqargs->stcack,
- };
-
- err = si476x_core_send_command(core, CMD_FM_RSQ_STATUS,
- args, ARRAY_SIZE(args),
- resp, ARRAY_SIZE(resp),
- SI476X_DEFAULT_TIMEOUT);
- /*
- * Besides getting received signal quality information this
- * command can be used to just acknowledge different interrupt
- * flags in those cases it is useless to copy and parse
- * received data so user can pass NULL, and thus avoid
- * unnecessary copying.
- */
- if (err < 0 || report == NULL)
- return err;
-
- report->multhint = 0b10000000 & resp[1];
- report->multlint = 0b01000000 & resp[1];
- report->snrhint = 0b00001000 & resp[1];
- report->snrlint = 0b00000100 & resp[1];
- report->rssihint = 0b00000010 & resp[1];
- report->rssilint = 0b00000001 & resp[1];
-
- report->bltf = 0b10000000 & resp[2];
- report->snr_ready = 0b00100000 & resp[2];
- report->rssiready = 0b00001000 & resp[2];
- report->afcrl = 0b00000010 & resp[2];
- report->valid = 0b00000001 & resp[2];
-
- report->readfreq = be16_to_cpup((__be16 *)(resp + 3));
- report->freqoff = resp[5];
- report->rssi = resp[6];
- report->snr = resp[7];
- report->lassi = resp[9];
- report->hassi = resp[10];
- report->mult = resp[11];
- report->dev = resp[12];
- report->readantcap = be16_to_cpup((__be16 *)(resp + 13));
- report->assi = resp[15];
- report->usn = resp[16];
-
- return err;
-}
-
-static int si476x_core_cmd_fm_rsq_status_a20(struct si476x_core *core,
- struct si476x_rsq_status_args *rsqargs,
- struct si476x_rsq_status_report *report)
-{
- int err;
- u8 resp[CMD_FM_RSQ_STATUS_A10_NRESP];
- const u8 args[CMD_FM_RSQ_STATUS_A30_NARGS] = {
- rsqargs->primary << 4 | rsqargs->rsqack << 3 |
- rsqargs->attune << 2 | rsqargs->cancel << 1 |
- rsqargs->stcack,
- };
-
- err = si476x_core_send_command(core, CMD_FM_RSQ_STATUS,
- args, ARRAY_SIZE(args),
- resp, ARRAY_SIZE(resp),
- SI476X_DEFAULT_TIMEOUT);
- /*
- * Besides getting received signal quality information this
- * command can be used to just acknowledge different interrupt
- * flags in those cases it is useless to copy and parse
- * received data so user can pass NULL, and thus avoid
- * unnecessary copying.
- */
- if (err < 0 || report == NULL)
- return err;
-
- report->multhint = 0b10000000 & resp[1];
- report->multlint = 0b01000000 & resp[1];
- report->snrhint = 0b00001000 & resp[1];
- report->snrlint = 0b00000100 & resp[1];
- report->rssihint = 0b00000010 & resp[1];
- report->rssilint = 0b00000001 & resp[1];
-
- report->bltf = 0b10000000 & resp[2];
- report->snr_ready = 0b00100000 & resp[2];
- report->rssiready = 0b00001000 & resp[2];
- report->afcrl = 0b00000010 & resp[2];
- report->valid = 0b00000001 & resp[2];
-
- report->readfreq = be16_to_cpup((__be16 *)(resp + 3));
- report->freqoff = resp[5];
- report->rssi = resp[6];
- report->snr = resp[7];
- report->lassi = resp[9];
- report->hassi = resp[10];
- report->mult = resp[11];
- report->dev = resp[12];
- report->readantcap = be16_to_cpup((__be16 *)(resp + 13));
- report->assi = resp[15];
- report->usn = resp[16];
-
- return err;
-}
-
-
-static int si476x_core_cmd_fm_rsq_status_a30(struct si476x_core *core,
- struct si476x_rsq_status_args *rsqargs,
- struct si476x_rsq_status_report *report)
-{
- int err;
- u8 resp[CMD_FM_RSQ_STATUS_A30_NRESP];
- const u8 args[CMD_FM_RSQ_STATUS_A30_NARGS] = {
- rsqargs->primary << 4 | rsqargs->rsqack << 3 |
- rsqargs->attune << 2 | rsqargs->cancel << 1 |
- rsqargs->stcack,
- };
-
- err = si476x_core_send_command(core, CMD_FM_RSQ_STATUS,
- args, ARRAY_SIZE(args),
- resp, ARRAY_SIZE(resp),
- SI476X_DEFAULT_TIMEOUT);
- /*
- * Besides getting received signal quality information this
- * command can be used to just acknowledge different interrupt
- * flags in those cases it is useless to copy and parse
- * received data so user can pass NULL, and thus avoid
- * unnecessary copying.
- */
- if (err < 0 || report == NULL)
- return err;
-
- report->multhint = 0b10000000 & resp[1];
- report->multlint = 0b01000000 & resp[1];
- report->snrhint = 0b00001000 & resp[1];
- report->snrlint = 0b00000100 & resp[1];
- report->rssihint = 0b00000010 & resp[1];
- report->rssilint = 0b00000001 & resp[1];
-
- report->bltf = 0b10000000 & resp[2];
- report->snr_ready = 0b00100000 & resp[2];
- report->rssiready = 0b00001000 & resp[2];
- report->injside = 0b00000100 & resp[2];
- report->afcrl = 0b00000010 & resp[2];
- report->valid = 0b00000001 & resp[2];
-
- report->readfreq = be16_to_cpup((__be16 *)(resp + 3));
- report->freqoff = resp[5];
- report->rssi = resp[6];
- report->snr = resp[7];
- report->issi = resp[8];
- report->lassi = resp[9];
- report->hassi = resp[10];
- report->mult = resp[11];
- report->dev = resp[12];
- report->readantcap = be16_to_cpup((__be16 *)(resp + 13));
- report->assi = resp[15];
- report->usn = resp[16];
-
- report->pilotdev = resp[17];
- report->rdsdev = resp[18];
- report->assidev = resp[19];
- report->strongdev = resp[20];
- report->rdspi = be16_to_cpup((__be16 *)(resp + 21));
-
- return err;
-}
-
-static int si476x_core_cmd_fm_tune_freq_a10(struct si476x_core *core,
- struct si476x_tune_freq_args *tuneargs)
-{
- u8 resp[CMD_FM_TUNE_FREQ_NRESP];
- const u8 args[CMD_FM_TUNE_FREQ_A10_NARGS] = {
- (tuneargs->hd << 6) | (tuneargs->tunemode << 4)
- | (tuneargs->smoothmetrics << 2),
- msb(tuneargs->freq),
- lsb(tuneargs->freq),
- msb(tuneargs->antcap),
- lsb(tuneargs->antcap)
- };
-
- return si476x_cmd_tune_seek_freq(core, CMD_FM_TUNE_FREQ,
- args, sizeof(args),
- resp, sizeof(resp));
-}
-
-static int si476x_core_cmd_fm_tune_freq_a20(struct si476x_core *core,
- struct si476x_tune_freq_args *tuneargs)
-{
- u8 resp[CMD_FM_TUNE_FREQ_NRESP];
- const u8 args[CMD_FM_TUNE_FREQ_A20_NARGS] = {
- (tuneargs->hd << 6) | (tuneargs->tunemode << 4)
- | (tuneargs->smoothmetrics << 2) | (tuneargs->injside),
- msb(tuneargs->freq),
- lsb(tuneargs->freq),
- };
-
- return si476x_cmd_tune_seek_freq(core, CMD_FM_TUNE_FREQ,
- args, sizeof(args),
- resp, sizeof(resp));
-}
-
-static int si476x_core_cmd_agc_status_a20(struct si476x_core *core,
- struct si476x_agc_status_report *report)
-{
- int err;
- u8 resp[CMD_AGC_STATUS_NRESP_A20];
-
- if (!report)
- return -EINVAL;
-
- err = si476x_core_send_command(core, CMD_AGC_STATUS,
- NULL, 0,
- resp, ARRAY_SIZE(resp),
- SI476X_DEFAULT_TIMEOUT);
- if (err < 0)
- return err;
-
- report->mxhi = resp[1] & SI476X_AGC_MXHI;
- report->mxlo = resp[1] & SI476X_AGC_MXLO;
- report->lnahi = resp[1] & SI476X_AGC_LNAHI;
- report->lnalo = resp[1] & SI476X_AGC_LNALO;
- report->fmagc1 = resp[2];
- report->fmagc2 = resp[3];
- report->pgagain = resp[4];
- report->fmwblang = resp[5];
-
- return err;
-}
-
-static int si476x_core_cmd_agc_status_a10(struct si476x_core *core,
- struct si476x_agc_status_report *report)
-{
- int err;
- u8 resp[CMD_AGC_STATUS_NRESP_A10];
-
- if (!report)
- return -EINVAL;
-
- err = si476x_core_send_command(core, CMD_AGC_STATUS,
- NULL, 0,
- resp, ARRAY_SIZE(resp),
- SI476X_DEFAULT_TIMEOUT);
- if (err < 0)
- return err;
-
- report->mxhi = resp[1] & SI476X_AGC_MXHI;
- report->mxlo = resp[1] & SI476X_AGC_MXLO;
- report->lnahi = resp[1] & SI476X_AGC_LNAHI;
- report->lnalo = resp[1] & SI476X_AGC_LNALO;
-
- return err;
-}
-
-typedef int (*tune_freq_func_t) (struct si476x_core *core,
- struct si476x_tune_freq_args *tuneargs);
-
-static struct {
- int (*power_up) (struct si476x_core *,
- struct si476x_power_up_args *);
- int (*power_down) (struct si476x_core *,
- struct si476x_power_down_args *);
-
- tune_freq_func_t fm_tune_freq;
- tune_freq_func_t am_tune_freq;
-
- int (*fm_rsq_status)(struct si476x_core *,
- struct si476x_rsq_status_args *,
- struct si476x_rsq_status_report *);
-
- int (*agc_status)(struct si476x_core *,
- struct si476x_agc_status_report *);
- int (*intb_pin_cfg)(struct si476x_core *core,
- enum si476x_intb_config intb,
- enum si476x_a1_config a1);
-} si476x_cmds_vtable[] = {
- [SI476X_REVISION_A10] = {
- .power_up = si476x_core_cmd_power_up_a10,
- .power_down = si476x_core_cmd_power_down_a10,
- .fm_tune_freq = si476x_core_cmd_fm_tune_freq_a10,
- .am_tune_freq = si476x_core_cmd_am_tune_freq_a10,
- .fm_rsq_status = si476x_core_cmd_fm_rsq_status_a10,
- .agc_status = si476x_core_cmd_agc_status_a10,
- .intb_pin_cfg = si476x_core_cmd_intb_pin_cfg_a10,
- },
- [SI476X_REVISION_A20] = {
- .power_up = si476x_core_cmd_power_up_a20,
- .power_down = si476x_core_cmd_power_down_a20,
- .fm_tune_freq = si476x_core_cmd_fm_tune_freq_a20,
- .am_tune_freq = si476x_core_cmd_am_tune_freq_a20,
- .fm_rsq_status = si476x_core_cmd_fm_rsq_status_a20,
- .agc_status = si476x_core_cmd_agc_status_a20,
- .intb_pin_cfg = si476x_core_cmd_intb_pin_cfg_a20,
- },
- [SI476X_REVISION_A30] = {
- .power_up = si476x_core_cmd_power_up_a20,
- .power_down = si476x_core_cmd_power_down_a20,
- .fm_tune_freq = si476x_core_cmd_fm_tune_freq_a20,
- .am_tune_freq = si476x_core_cmd_am_tune_freq_a20,
- .fm_rsq_status = si476x_core_cmd_fm_rsq_status_a30,
- .agc_status = si476x_core_cmd_agc_status_a20,
- .intb_pin_cfg = si476x_core_cmd_intb_pin_cfg_a20,
- },
-};
-
-int si476x_core_cmd_power_up(struct si476x_core *core,
- struct si476x_power_up_args *args)
-{
- BUG_ON(core->revision > SI476X_REVISION_A30 ||
- core->revision == -1);
- return si476x_cmds_vtable[core->revision].power_up(core, args);
-}
-EXPORT_SYMBOL_GPL(si476x_core_cmd_power_up);
-
-int si476x_core_cmd_power_down(struct si476x_core *core,
- struct si476x_power_down_args *args)
-{
- BUG_ON(core->revision > SI476X_REVISION_A30 ||
- core->revision == -1);
- return si476x_cmds_vtable[core->revision].power_down(core, args);
-}
-EXPORT_SYMBOL_GPL(si476x_core_cmd_power_down);
-
-int si476x_core_cmd_fm_tune_freq(struct si476x_core *core,
- struct si476x_tune_freq_args *args)
-{
- BUG_ON(core->revision > SI476X_REVISION_A30 ||
- core->revision == -1);
- return si476x_cmds_vtable[core->revision].fm_tune_freq(core, args);
-}
-EXPORT_SYMBOL_GPL(si476x_core_cmd_fm_tune_freq);
-
-int si476x_core_cmd_am_tune_freq(struct si476x_core *core,
- struct si476x_tune_freq_args *args)
-{
- BUG_ON(core->revision > SI476X_REVISION_A30 ||
- core->revision == -1);
- return si476x_cmds_vtable[core->revision].am_tune_freq(core, args);
-}
-EXPORT_SYMBOL_GPL(si476x_core_cmd_am_tune_freq);
-
-int si476x_core_cmd_fm_rsq_status(struct si476x_core *core,
- struct si476x_rsq_status_args *args,
- struct si476x_rsq_status_report *report)
-
-{
- BUG_ON(core->revision > SI476X_REVISION_A30 ||
- core->revision == -1);
- return si476x_cmds_vtable[core->revision].fm_rsq_status(core, args,
- report);
-}
-EXPORT_SYMBOL_GPL(si476x_core_cmd_fm_rsq_status);
-
-int si476x_core_cmd_agc_status(struct si476x_core *core,
- struct si476x_agc_status_report *report)
-
-{
- BUG_ON(core->revision > SI476X_REVISION_A30 ||
- core->revision == -1);
- return si476x_cmds_vtable[core->revision].agc_status(core, report);
-}
-EXPORT_SYMBOL_GPL(si476x_core_cmd_agc_status);
-
-int si476x_core_cmd_intb_pin_cfg(struct si476x_core *core,
- enum si476x_intb_config intb,
- enum si476x_a1_config a1)
-{
- BUG_ON(core->revision > SI476X_REVISION_A30 ||
- core->revision == -1);
-
- return si476x_cmds_vtable[core->revision].intb_pin_cfg(core, intb, a1);
-}
-EXPORT_SYMBOL_GPL(si476x_core_cmd_intb_pin_cfg);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Andrey Smirnov <andrew.smirnov@gmail.com>");
-MODULE_DESCRIPTION("API for command exchange for si476x");
diff --git a/drivers/mfd/si476x-i2c.c b/drivers/mfd/si476x-i2c.c
deleted file mode 100644
index f5bc8e4bd4bf..000000000000
--- a/drivers/mfd/si476x-i2c.c
+++ /dev/null
@@ -1,886 +0,0 @@
-/*
- * drivers/mfd/si476x-i2c.c -- Core device driver for si476x MFD
- * device
- *
- * Copyright (C) 2012 Innovative Converged Devices(ICD)
- * Copyright (C) 2013 Andrey Smirnov
- *
- * Author: Andrey Smirnov <andrew.smirnov@gmail.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- */
-#include <linux/module.h>
-
-#include <linux/slab.h>
-#include <linux/interrupt.h>
-#include <linux/delay.h>
-#include <linux/gpio.h>
-#include <linux/regulator/consumer.h>
-#include <linux/i2c.h>
-#include <linux/err.h>
-
-#include <linux/mfd/si476x-core.h>
-
-#define SI476X_MAX_IO_ERRORS 10
-#define SI476X_DRIVER_RDS_FIFO_DEPTH 128
-
-/**
- * si476x_core_config_pinmux() - pin function configuration function
- *
- * @core: Core device structure
- *
- * Configure the functions of the pins of the radio chip.
- *
- * The function returns zero in case of succes or negative error code
- * otherwise.
- */
-static int si476x_core_config_pinmux(struct si476x_core *core)
-{
- int err;
- dev_dbg(&core->client->dev, "Configuring pinmux\n");
- err = si476x_core_cmd_dig_audio_pin_cfg(core,
- core->pinmux.dclk,
- core->pinmux.dfs,
- core->pinmux.dout,
- core->pinmux.xout);
- if (err < 0) {
- dev_err(&core->client->dev,
- "Failed to configure digital audio pins(err = %d)\n",
- err);
- return err;
- }
-
- err = si476x_core_cmd_zif_pin_cfg(core,
- core->pinmux.iqclk,
- core->pinmux.iqfs,
- core->pinmux.iout,
- core->pinmux.qout);
- if (err < 0) {
- dev_err(&core->client->dev,
- "Failed to configure ZIF pins(err = %d)\n",
- err);
- return err;
- }
-
- err = si476x_core_cmd_ic_link_gpo_ctl_pin_cfg(core,
- core->pinmux.icin,
- core->pinmux.icip,
- core->pinmux.icon,
- core->pinmux.icop);
- if (err < 0) {
- dev_err(&core->client->dev,
- "Failed to configure IC-Link/GPO pins(err = %d)\n",
- err);
- return err;
- }
-
- err = si476x_core_cmd_ana_audio_pin_cfg(core,
- core->pinmux.lrout);
- if (err < 0) {
- dev_err(&core->client->dev,
- "Failed to configure analog audio pins(err = %d)\n",
- err);
- return err;
- }
-
- err = si476x_core_cmd_intb_pin_cfg(core,
- core->pinmux.intb,
- core->pinmux.a1);
- if (err < 0) {
- dev_err(&core->client->dev,
- "Failed to configure interrupt pins(err = %d)\n",
- err);
- return err;
- }
-
- return 0;
-}
-
-static inline void si476x_core_schedule_polling_work(struct si476x_core *core)
-{
- schedule_delayed_work(&core->status_monitor,
- usecs_to_jiffies(SI476X_STATUS_POLL_US));
-}
-
-/**
- * si476x_core_start() - early chip startup function
- * @core: Core device structure
- * @soft: When set, this flag forces "soft" startup, where "soft"
- * power down is the one done by sending appropriate command instead
- * of using reset pin of the tuner
- *
- * Perform required startup sequence to correctly power
- * up the chip and perform initial configuration. It does the
- * following sequence of actions:
- * 1. Claims and enables the power supplies VD and VIO1 required
- * for I2C interface of the chip operation.
- * 2. Waits for 100us, pulls the reset line up, enables irq,
- * waits for another 100us as it is specified by the
- * datasheet.
- * 3. Sends 'POWER_UP' command to the device with all provided
- * information about power-up parameters.
- * 4. Configures, pin multiplexor, disables digital audio and
- * configures interrupt sources.
- *
- * The function returns zero in case of succes or negative error code
- * otherwise.
- */
-int si476x_core_start(struct si476x_core *core, bool soft)
-{
- struct i2c_client *client = core->client;
- int err;
-
- if (!soft) {
- if (gpio_is_valid(core->gpio_reset))
- gpio_set_value_cansleep(core->gpio_reset, 1);
-
- if (client->irq)
- enable_irq(client->irq);
-
- udelay(100);
-
- if (!client->irq) {
- atomic_set(&core->is_alive, 1);
- si476x_core_schedule_polling_work(core);
- }
- } else {
- if (client->irq)
- enable_irq(client->irq);
- else {
- atomic_set(&core->is_alive, 1);
- si476x_core_schedule_polling_work(core);
- }
- }
-
- err = si476x_core_cmd_power_up(core,
- &core->power_up_parameters);
-
- if (err < 0) {
- dev_err(&core->client->dev,
- "Power up failure(err = %d)\n",
- err);
- goto disable_irq;
- }
-
- if (client->irq)
- atomic_set(&core->is_alive, 1);
-
- err = si476x_core_config_pinmux(core);
- if (err < 0) {
- dev_err(&core->client->dev,
- "Failed to configure pinmux(err = %d)\n",
- err);
- goto disable_irq;
- }
-
- if (client->irq) {
- err = regmap_write(core->regmap,
- SI476X_PROP_INT_CTL_ENABLE,
- SI476X_RDSIEN |
- SI476X_STCIEN |
- SI476X_CTSIEN);
- if (err < 0) {
- dev_err(&core->client->dev,
- "Failed to configure interrupt sources"
- "(err = %d)\n", err);
- goto disable_irq;
- }
- }
-
- return 0;
-
-disable_irq:
- if (err == -ENODEV)
- atomic_set(&core->is_alive, 0);
-
- if (client->irq)
- disable_irq(client->irq);
- else
- cancel_delayed_work_sync(&core->status_monitor);
-
- if (gpio_is_valid(core->gpio_reset))
- gpio_set_value_cansleep(core->gpio_reset, 0);
-
- return err;
-}
-EXPORT_SYMBOL_GPL(si476x_core_start);
-
-/**
- * si476x_core_stop() - chip power-down function
- * @core: Core device structure
- * @soft: When set, function sends a POWER_DOWN command instead of
- * bringing reset line low
- *
- * Power down the chip by performing following actions:
- * 1. Disable IRQ or stop the polling worker
- * 2. Send the POWER_DOWN command if the power down is soft or bring
- * reset line low if not.
- *
- * The function returns zero in case of succes or negative error code
- * otherwise.
- */
-int si476x_core_stop(struct si476x_core *core, bool soft)
-{
- int err = 0;
- atomic_set(&core->is_alive, 0);
-
- if (soft) {
- /* TODO: This probably shoud be a configurable option,
- * so it is possible to have the chips keep their
- * oscillators running
- */
- struct si476x_power_down_args args = {
- .xosc = false,
- };
- err = si476x_core_cmd_power_down(core, &args);
- }
-
- /* We couldn't disable those before
- * 'si476x_core_cmd_power_down' since we expect to get CTS
- * interrupt */
- if (core->client->irq)
- disable_irq(core->client->irq);
- else
- cancel_delayed_work_sync(&core->status_monitor);
-
- if (!soft) {
- if (gpio_is_valid(core->gpio_reset))
- gpio_set_value_cansleep(core->gpio_reset, 0);
- }
- return err;
-}
-EXPORT_SYMBOL_GPL(si476x_core_stop);
-
-/**
- * si476x_core_set_power_state() - set the level at which the power is
- * supplied for the chip.
- * @core: Core device structure
- * @next_state: enum si476x_power_state describing power state to
- * switch to.
- *
- * Switch on all the required power supplies
- *
- * This function returns 0 in case of suvccess and negative error code
- * otherwise.
- */
-int si476x_core_set_power_state(struct si476x_core *core,
- enum si476x_power_state next_state)
-{
- /*
- It is not clear form the datasheet if it is possible to
- work with device if not all power domains are operational.
- So for now the power-up policy is "power-up all the things!"
- */
- int err = 0;
-
- if (core->power_state == SI476X_POWER_INCONSISTENT) {
- dev_err(&core->client->dev,
- "The device in inconsistent power state\n");
- return -EINVAL;
- }
-
- if (next_state != core->power_state) {
- switch (next_state) {
- case SI476X_POWER_UP_FULL:
- err = regulator_bulk_enable(ARRAY_SIZE(core->supplies),
- core->supplies);
- if (err < 0) {
- core->power_state = SI476X_POWER_INCONSISTENT;
- break;
- }
- /*
- * Startup timing diagram recommends to have a
- * 100 us delay between enabling of the power
- * supplies and turning the tuner on.
- */
- udelay(100);
-
- err = si476x_core_start(core, false);
- if (err < 0)
- goto disable_regulators;
-
- core->power_state = next_state;
- break;
-
- case SI476X_POWER_DOWN:
- core->power_state = next_state;
- err = si476x_core_stop(core, false);
- if (err < 0)
- core->power_state = SI476X_POWER_INCONSISTENT;
-disable_regulators:
- err = regulator_bulk_disable(ARRAY_SIZE(core->supplies),
- core->supplies);
- if (err < 0)
- core->power_state = SI476X_POWER_INCONSISTENT;
- break;
- default:
- BUG();
- }
- }
-
- return err;
-}
-EXPORT_SYMBOL_GPL(si476x_core_set_power_state);
-
-/**
- * si476x_core_report_drainer_stop() - mark the completion of the RDS
- * buffer drain porcess by the worker.
- *
- * @core: Core device structure
- */
-static inline void si476x_core_report_drainer_stop(struct si476x_core *core)
-{
- mutex_lock(&core->rds_drainer_status_lock);
- core->rds_drainer_is_working = false;
- mutex_unlock(&core->rds_drainer_status_lock);
-}
-
-/**
- * si476x_core_start_rds_drainer_once() - start RDS drainer worker if
- * ther is none working, do nothing otherwise
- *
- * @core: Datastructure corresponding to the chip.
- */
-static inline void si476x_core_start_rds_drainer_once(struct si476x_core *core)
-{
- mutex_lock(&core->rds_drainer_status_lock);
- if (!core->rds_drainer_is_working) {
- core->rds_drainer_is_working = true;
- schedule_work(&core->rds_fifo_drainer);
- }
- mutex_unlock(&core->rds_drainer_status_lock);
-}
-/**
- * si476x_drain_rds_fifo() - RDS buffer drainer.
- * @work: struct work_struct being ppassed to the function by the
- * kernel.
- *
- * Drain the contents of the RDS FIFO of
- */
-static void si476x_core_drain_rds_fifo(struct work_struct *work)
-{
- int err;
-
- struct si476x_core *core = container_of(work, struct si476x_core,
- rds_fifo_drainer);
-
- struct si476x_rds_status_report report;
-
- si476x_core_lock(core);
- err = si476x_core_cmd_fm_rds_status(core, true, false, false, &report);
- if (!err) {
- int i = report.rdsfifoused;
- dev_dbg(&core->client->dev,
- "%d elements in RDS FIFO. Draining.\n", i);
- for (; i > 0; --i) {
- err = si476x_core_cmd_fm_rds_status(core, false, false,
- (i == 1), &report);
- if (err < 0)
- goto unlock;
-
- kfifo_in(&core->rds_fifo, report.rds,
- sizeof(report.rds));
- dev_dbg(&core->client->dev, "RDS data:\n %*ph\n",
- (int)sizeof(report.rds), report.rds);
- }
- dev_dbg(&core->client->dev, "Drrrrained!\n");
- wake_up_interruptible(&core->rds_read_queue);
- }
-
-unlock:
- si476x_core_unlock(core);
- si476x_core_report_drainer_stop(core);
-}
-
-/**
- * si476x_core_pronounce_dead()
- *
- * @core: Core device structure
- *
- * Mark the device as being dead and wake up all potentially waiting
- * threads of execution.
- *
- */
-static void si476x_core_pronounce_dead(struct si476x_core *core)
-{
- dev_info(&core->client->dev, "Core device is dead.\n");
-
- atomic_set(&core->is_alive, 0);
-
- /* Wake up al possible waiting processes */
- wake_up_interruptible(&core->rds_read_queue);
-
- atomic_set(&core->cts, 1);
- wake_up(&core->command);
-
- atomic_set(&core->stc, 1);
- wake_up(&core->tuning);
-}
-
-/**
- * si476x_core_i2c_xfer()
- *
- * @core: Core device structure
- * @type: Transfer type
- * @buf: Transfer buffer for/with data
- * @count: Transfer buffer size
- *
- * Perfrom and I2C transfer(either read or write) and keep a counter
- * of I/O errors. If the error counter rises above the threshold
- * pronounce device dead.
- *
- * The function returns zero on succes or negative error code on
- * failure.
- */
-int si476x_core_i2c_xfer(struct si476x_core *core,
- enum si476x_i2c_type type,
- char *buf, int count)
-{
- static int io_errors_count;
- int err;
- if (type == SI476X_I2C_SEND)
- err = i2c_master_send(core->client, buf, count);
- else
- err = i2c_master_recv(core->client, buf, count);
-
- if (err < 0) {
- if (io_errors_count++ > SI476X_MAX_IO_ERRORS)
- si476x_core_pronounce_dead(core);
- } else {
- io_errors_count = 0;
- }
-
- return err;
-}
-EXPORT_SYMBOL_GPL(si476x_core_i2c_xfer);
-
-/**
- * si476x_get_status()
- * @core: Core device structure
- *
- * Get the status byte of the core device by berforming one byte I2C
- * read.
- *
- * The function returns a status value or a negative error code on
- * error.
- */
-static int si476x_core_get_status(struct si476x_core *core)
-{
- u8 response;
- int err = si476x_core_i2c_xfer(core, SI476X_I2C_RECV,
- &response, sizeof(response));
-
- return (err < 0) ? err : response;
-}
-
-/**
- * si476x_get_and_signal_status() - IRQ dispatcher
- * @core: Core device structure
- *
- * Dispatch the arrived interrupt request based on the value of the
- * status byte reported by the tuner.
- *
- */
-static void si476x_core_get_and_signal_status(struct si476x_core *core)
-{
- int status = si476x_core_get_status(core);
- if (status < 0) {
- dev_err(&core->client->dev, "Failed to get status\n");
- return;
- }
-
- if (status & SI476X_CTS) {
- /* Unfortunately completions could not be used for
- * signalling CTS since this flag cannot be cleared
- * in status byte, and therefore once it becomes true
- * multiple calls to 'complete' would cause the
- * commands following the current one to be completed
- * before they actually are */
- dev_dbg(&core->client->dev, "[interrupt] CTSINT\n");
- atomic_set(&core->cts, 1);
- wake_up(&core->command);
- }
-
- if (status & SI476X_FM_RDS_INT) {
- dev_dbg(&core->client->dev, "[interrupt] RDSINT\n");
- si476x_core_start_rds_drainer_once(core);
- }
-
- if (status & SI476X_STC_INT) {
- dev_dbg(&core->client->dev, "[interrupt] STCINT\n");
- atomic_set(&core->stc, 1);
- wake_up(&core->tuning);
- }
-}
-
-static void si476x_core_poll_loop(struct work_struct *work)
-{
- struct si476x_core *core = SI476X_WORK_TO_CORE(work);
-
- si476x_core_get_and_signal_status(core);
-
- if (atomic_read(&core->is_alive))
- si476x_core_schedule_polling_work(core);
-}
-
-static irqreturn_t si476x_core_interrupt(int irq, void *dev)
-{
- struct si476x_core *core = dev;
-
- si476x_core_get_and_signal_status(core);
-
- return IRQ_HANDLED;
-}
-
-/**
- * si476x_firmware_version_to_revision()
- * @core: Core device structure
- * @major: Firmware major number
- * @minor1: Firmware first minor number
- * @minor2: Firmware second minor number
- *
- * Convert a chip's firmware version number into an offset that later
- * will be used to as offset in "vtable" of tuner functions
- *
- * This function returns a positive offset in case of success and a -1
- * in case of failure.
- */
-static int si476x_core_fwver_to_revision(struct si476x_core *core,
- int func, int major,
- int minor1, int minor2)
-{
- switch (func) {
- case SI476X_FUNC_FM_RECEIVER:
- switch (major) {
- case 5:
- return SI476X_REVISION_A10;
- case 8:
- return SI476X_REVISION_A20;
- case 10:
- return SI476X_REVISION_A30;
- default:
- goto unknown_revision;
- }
- case SI476X_FUNC_AM_RECEIVER:
- switch (major) {
- case 5:
- return SI476X_REVISION_A10;
- case 7:
- return SI476X_REVISION_A20;
- case 9:
- return SI476X_REVISION_A30;
- default:
- goto unknown_revision;
- }
- case SI476X_FUNC_WB_RECEIVER:
- switch (major) {
- case 3:
- return SI476X_REVISION_A10;
- case 5:
- return SI476X_REVISION_A20;
- case 7:
- return SI476X_REVISION_A30;
- default:
- goto unknown_revision;
- }
- case SI476X_FUNC_BOOTLOADER:
- default: /* FALLTHROUG */
- BUG();
- return -1;
- }
-
-unknown_revision:
- dev_err(&core->client->dev,
- "Unsupported version of the firmware: %d.%d.%d, "
- "reverting to A10 comptible functions\n",
- major, minor1, minor2);
-
- return SI476X_REVISION_A10;
-}
-
-/**
- * si476x_get_revision_info()
- * @core: Core device structure
- *
- * Get the firmware version number of the device. It is done in
- * following three steps:
- * 1. Power-up the device
- * 2. Send the 'FUNC_INFO' command
- * 3. Powering the device down.
- *
- * The function return zero on success and a negative error code on
- * failure.
- */
-static int si476x_core_get_revision_info(struct si476x_core *core)
-{
- int rval;
- struct si476x_func_info info;
-
- si476x_core_lock(core);
- rval = si476x_core_set_power_state(core, SI476X_POWER_UP_FULL);
- if (rval < 0)
- goto exit;
-
- rval = si476x_core_cmd_func_info(core, &info);
- if (rval < 0)
- goto power_down;
-
- core->revision = si476x_core_fwver_to_revision(core, info.func,
- info.firmware.major,
- info.firmware.minor[0],
- info.firmware.minor[1]);
-power_down:
- si476x_core_set_power_state(core, SI476X_POWER_DOWN);
-exit:
- si476x_core_unlock(core);
-
- return rval;
-}
-
-bool si476x_core_has_am(struct si476x_core *core)
-{
- return core->chip_id == SI476X_CHIP_SI4761 ||
- core->chip_id == SI476X_CHIP_SI4764;
-}
-EXPORT_SYMBOL_GPL(si476x_core_has_am);
-
-bool si476x_core_has_diversity(struct si476x_core *core)
-{
- return core->chip_id == SI476X_CHIP_SI4764;
-}
-EXPORT_SYMBOL_GPL(si476x_core_has_diversity);
-
-bool si476x_core_is_a_secondary_tuner(struct si476x_core *core)
-{
- return si476x_core_has_diversity(core) &&
- (core->diversity_mode == SI476X_PHDIV_SECONDARY_ANTENNA ||
- core->diversity_mode == SI476X_PHDIV_SECONDARY_COMBINING);
-}
-EXPORT_SYMBOL_GPL(si476x_core_is_a_secondary_tuner);
-
-bool si476x_core_is_a_primary_tuner(struct si476x_core *core)
-{
- return si476x_core_has_diversity(core) &&
- (core->diversity_mode == SI476X_PHDIV_PRIMARY_ANTENNA ||
- core->diversity_mode == SI476X_PHDIV_PRIMARY_COMBINING);
-}
-EXPORT_SYMBOL_GPL(si476x_core_is_a_primary_tuner);
-
-bool si476x_core_is_in_am_receiver_mode(struct si476x_core *core)
-{
- return si476x_core_has_am(core) &&
- (core->power_up_parameters.func == SI476X_FUNC_AM_RECEIVER);
-}
-EXPORT_SYMBOL_GPL(si476x_core_is_in_am_receiver_mode);
-
-bool si476x_core_is_powered_up(struct si476x_core *core)
-{
- return core->power_state == SI476X_POWER_UP_FULL;
-}
-EXPORT_SYMBOL_GPL(si476x_core_is_powered_up);
-
-static int si476x_core_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
-{
- int rval;
- struct si476x_core *core;
- struct si476x_platform_data *pdata;
- struct mfd_cell *cell;
- int cell_num;
-
- core = devm_kzalloc(&client->dev, sizeof(*core), GFP_KERNEL);
- if (!core) {
- dev_err(&client->dev,
- "failed to allocate 'struct si476x_core'\n");
- return -ENOMEM;
- }
- core->client = client;
-
- core->regmap = devm_regmap_init_si476x(core);
- if (IS_ERR(core->regmap)) {
- rval = PTR_ERR(core->regmap);
- dev_err(&client->dev,
- "Failed to allocate register map: %d\n",
- rval);
- return rval;
- }
-
- i2c_set_clientdata(client, core);
-
- atomic_set(&core->is_alive, 0);
- core->power_state = SI476X_POWER_DOWN;
-
- pdata = client->dev.platform_data;
- if (pdata) {
- memcpy(&core->power_up_parameters,
- &pdata->power_up_parameters,
- sizeof(core->power_up_parameters));
-
- core->gpio_reset = -1;
- if (gpio_is_valid(pdata->gpio_reset)) {
- rval = gpio_request(pdata->gpio_reset, "si476x reset");
- if (rval) {
- dev_err(&client->dev,
- "Failed to request gpio: %d\n", rval);
- return rval;
- }
- core->gpio_reset = pdata->gpio_reset;
- gpio_direction_output(core->gpio_reset, 0);
- }
-
- core->diversity_mode = pdata->diversity_mode;
- memcpy(&core->pinmux, &pdata->pinmux,
- sizeof(struct si476x_pinmux));
- } else {
- dev_err(&client->dev, "No platform data provided\n");
- return -EINVAL;
- }
-
- core->supplies[0].supply = "vd";
- core->supplies[1].supply = "va";
- core->supplies[2].supply = "vio1";
- core->supplies[3].supply = "vio2";
-
- rval = devm_regulator_bulk_get(&client->dev,
- ARRAY_SIZE(core->supplies),
- core->supplies);
- if (rval) {
- dev_err(&client->dev, "Failet to gett all of the regulators\n");
- goto free_gpio;
- }
-
- mutex_init(&core->cmd_lock);
- init_waitqueue_head(&core->command);
- init_waitqueue_head(&core->tuning);
-
- rval = kfifo_alloc(&core->rds_fifo,
- SI476X_DRIVER_RDS_FIFO_DEPTH *
- sizeof(struct v4l2_rds_data),
- GFP_KERNEL);
- if (rval) {
- dev_err(&client->dev, "Could not alloate the FIFO\n");
- goto free_gpio;
- }
- mutex_init(&core->rds_drainer_status_lock);
- init_waitqueue_head(&core->rds_read_queue);
- INIT_WORK(&core->rds_fifo_drainer, si476x_core_drain_rds_fifo);
-
- if (client->irq) {
- rval = devm_request_threaded_irq(&client->dev,
- client->irq, NULL,
- si476x_core_interrupt,
- IRQF_TRIGGER_FALLING,
- client->name, core);
- if (rval < 0) {
- dev_err(&client->dev, "Could not request IRQ %d\n",
- client->irq);
- goto free_kfifo;
- }
- disable_irq(client->irq);
- dev_dbg(&client->dev, "IRQ requested.\n");
-
- core->rds_fifo_depth = 20;
- } else {
- INIT_DELAYED_WORK(&core->status_monitor,
- si476x_core_poll_loop);
- dev_info(&client->dev,
- "No IRQ number specified, will use polling\n");
-
- core->rds_fifo_depth = 5;
- }
-
- core->chip_id = id->driver_data;
-
- rval = si476x_core_get_revision_info(core);
- if (rval < 0) {
- rval = -ENODEV;
- goto free_kfifo;
- }
-
- cell_num = 0;
-
- cell = &core->cells[SI476X_RADIO_CELL];
- cell->name = "si476x-radio";
- cell_num++;
-
-#ifdef CONFIG_SND_SOC_SI476X
- if ((core->chip_id == SI476X_CHIP_SI4761 ||
- core->chip_id == SI476X_CHIP_SI4764) &&
- core->pinmux.dclk == SI476X_DCLK_DAUDIO &&
- core->pinmux.dfs == SI476X_DFS_DAUDIO &&
- core->pinmux.dout == SI476X_DOUT_I2S_OUTPUT &&
- core->pinmux.xout == SI476X_XOUT_TRISTATE) {
- cell = &core->cells[SI476X_CODEC_CELL];
- cell->name = "si476x-codec";
- cell_num++;
- }
-#endif
- rval = mfd_add_devices(&client->dev,
- (client->adapter->nr << 8) + client->addr,
- core->cells, cell_num,
- NULL, 0, NULL);
- if (!rval)
- return 0;
-
-free_kfifo:
- kfifo_free(&core->rds_fifo);
-
-free_gpio:
- if (gpio_is_valid(core->gpio_reset))
- gpio_free(core->gpio_reset);
-
- return rval;
-}
-
-static int si476x_core_remove(struct i2c_client *client)
-{
- struct si476x_core *core = i2c_get_clientdata(client);
-
- si476x_core_pronounce_dead(core);
- mfd_remove_devices(&client->dev);
-
- if (client->irq)
- disable_irq(client->irq);
- else
- cancel_delayed_work_sync(&core->status_monitor);
-
- kfifo_free(&core->rds_fifo);
-
- if (gpio_is_valid(core->gpio_reset))
- gpio_free(core->gpio_reset);
-
- return 0;
-}
-
-
-static const struct i2c_device_id si476x_id[] = {
- { "si4761", SI476X_CHIP_SI4761 },
- { "si4764", SI476X_CHIP_SI4764 },
- { "si4768", SI476X_CHIP_SI4768 },
- { },
-};
-MODULE_DEVICE_TABLE(i2c, si476x_id);
-
-static struct i2c_driver si476x_core_driver = {
- .driver = {
- .name = "si476x-core",
- .owner = THIS_MODULE,
- },
- .probe = si476x_core_probe,
- .remove = si476x_core_remove,
- .id_table = si476x_id,
-};
-module_i2c_driver(si476x_core_driver);
-
-
-MODULE_AUTHOR("Andrey Smirnov <andrew.smirnov@gmail.com>");
-MODULE_DESCRIPTION("Si4761/64/68 AM/FM MFD core device driver");
-MODULE_LICENSE("GPL");
diff --git a/drivers/mfd/si476x-prop.c b/drivers/mfd/si476x-prop.c
deleted file mode 100644
index d1f548aac0cf..000000000000
--- a/drivers/mfd/si476x-prop.c
+++ /dev/null
@@ -1,242 +0,0 @@
-/*
- * drivers/mfd/si476x-prop.c -- Subroutines to access
- * properties of si476x chips
- *
- * Copyright (C) 2012 Innovative Converged Devices(ICD)
- * Copyright (C) 2013 Andrey Smirnov
- *
- * Author: Andrey Smirnov <andrew.smirnov@gmail.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- */
-#include <linux/module.h>
-
-#include <media/si476x.h>
-#include <linux/mfd/si476x-core.h>
-
-struct si476x_property_range {
- u16 low, high;
-};
-
-static bool si476x_core_element_is_in_array(u16 element,
- const u16 array[],
- size_t size)
-{
- int i;
-
- for (i = 0; i < size; i++)
- if (element == array[i])
- return true;
-
- return false;
-}
-
-static bool si476x_core_element_is_in_range(u16 element,
- const struct si476x_property_range range[],
- size_t size)
-{
- int i;
-
- for (i = 0; i < size; i++)
- if (element <= range[i].high && element >= range[i].low)
- return true;
-
- return false;
-}
-
-static bool si476x_core_is_valid_property_a10(struct si476x_core *core,
- u16 property)
-{
- static const u16 valid_properties[] = {
- 0x0000,
- 0x0500, 0x0501,
- 0x0600,
- 0x0709, 0x070C, 0x070D, 0x70E, 0x710,
- 0x0718,
- 0x1207, 0x1208,
- 0x2007,
- 0x2300,
- };
-
- static const struct si476x_property_range valid_ranges[] = {
- { 0x0200, 0x0203 },
- { 0x0300, 0x0303 },
- { 0x0400, 0x0404 },
- { 0x0700, 0x0707 },
- { 0x1100, 0x1102 },
- { 0x1200, 0x1204 },
- { 0x1300, 0x1306 },
- { 0x2000, 0x2005 },
- { 0x2100, 0x2104 },
- { 0x2106, 0x2106 },
- { 0x2200, 0x220E },
- { 0x3100, 0x3104 },
- { 0x3207, 0x320F },
- { 0x3300, 0x3304 },
- { 0x3500, 0x3517 },
- { 0x3600, 0x3617 },
- { 0x3700, 0x3717 },
- { 0x4000, 0x4003 },
- };
-
- return si476x_core_element_is_in_range(property, valid_ranges,
- ARRAY_SIZE(valid_ranges)) ||
- si476x_core_element_is_in_array(property, valid_properties,
- ARRAY_SIZE(valid_properties));
-}
-
-static bool si476x_core_is_valid_property_a20(struct si476x_core *core,
- u16 property)
-{
- static const u16 valid_properties[] = {
- 0x071B,
- 0x1006,
- 0x2210,
- 0x3401,
- };
-
- static const struct si476x_property_range valid_ranges[] = {
- { 0x2215, 0x2219 },
- };
-
- return si476x_core_is_valid_property_a10(core, property) ||
- si476x_core_element_is_in_range(property, valid_ranges,
- ARRAY_SIZE(valid_ranges)) ||
- si476x_core_element_is_in_array(property, valid_properties,
- ARRAY_SIZE(valid_properties));
-}
-
-static bool si476x_core_is_valid_property_a30(struct si476x_core *core,
- u16 property)
-{
- static const u16 valid_properties[] = {
- 0x071C, 0x071D,
- 0x1007, 0x1008,
- 0x220F, 0x2214,
- 0x2301,
- 0x3105, 0x3106,
- 0x3402,
- };
-
- static const struct si476x_property_range valid_ranges[] = {
- { 0x0405, 0x0411 },
- { 0x2008, 0x200B },
- { 0x2220, 0x2223 },
- { 0x3100, 0x3106 },
- };
-
- return si476x_core_is_valid_property_a20(core, property) ||
- si476x_core_element_is_in_range(property, valid_ranges,
- ARRAY_SIZE(valid_ranges)) ||
- si476x_core_element_is_in_array(property, valid_properties,
- ARRAY_SIZE(valid_properties));
-}
-
-typedef bool (*valid_property_pred_t) (struct si476x_core *, u16);
-
-static bool si476x_core_is_valid_property(struct si476x_core *core,
- u16 property)
-{
- static const valid_property_pred_t is_valid_property[] = {
- [SI476X_REVISION_A10] = si476x_core_is_valid_property_a10,
- [SI476X_REVISION_A20] = si476x_core_is_valid_property_a20,
- [SI476X_REVISION_A30] = si476x_core_is_valid_property_a30,
- };
-
- BUG_ON(core->revision > SI476X_REVISION_A30 ||
- core->revision == -1);
- return is_valid_property[core->revision](core, property);
-}
-
-
-static bool si476x_core_is_readonly_property(struct si476x_core *core,
- u16 property)
-{
- BUG_ON(core->revision > SI476X_REVISION_A30 ||
- core->revision == -1);
-
- switch (core->revision) {
- case SI476X_REVISION_A10:
- return (property == 0x3200);
- case SI476X_REVISION_A20:
- return (property == 0x1006 ||
- property == 0x2210 ||
- property == 0x3200);
- case SI476X_REVISION_A30:
- return false;
- }
-
- return false;
-}
-
-static bool si476x_core_regmap_readable_register(struct device *dev,
- unsigned int reg)
-{
- struct i2c_client *client = to_i2c_client(dev);
- struct si476x_core *core = i2c_get_clientdata(client);
-
- return si476x_core_is_valid_property(core, (u16) reg);
-
-}
-
-static bool si476x_core_regmap_writable_register(struct device *dev,
- unsigned int reg)
-{
- struct i2c_client *client = to_i2c_client(dev);
- struct si476x_core *core = i2c_get_clientdata(client);
-
- return si476x_core_is_valid_property(core, (u16) reg) &&
- !si476x_core_is_readonly_property(core, (u16) reg);
-}
-
-
-static int si476x_core_regmap_write(void *context, unsigned int reg,
- unsigned int val)
-{
- return si476x_core_cmd_set_property(context, reg, val);
-}
-
-static int si476x_core_regmap_read(void *context, unsigned int reg,
- unsigned *val)
-{
- struct si476x_core *core = context;
- int err;
-
- err = si476x_core_cmd_get_property(core, reg);
- if (err < 0)
- return err;
-
- *val = err;
-
- return 0;
-}
-
-
-static const struct regmap_config si476x_regmap_config = {
- .reg_bits = 16,
- .val_bits = 16,
-
- .max_register = 0x4003,
-
- .writeable_reg = si476x_core_regmap_writable_register,
- .readable_reg = si476x_core_regmap_readable_register,
-
- .reg_read = si476x_core_regmap_read,
- .reg_write = si476x_core_regmap_write,
-
- .cache_type = REGCACHE_RBTREE,
-};
-
-struct regmap *devm_regmap_init_si476x(struct si476x_core *core)
-{
- return devm_regmap_init(&core->client->dev, NULL,
- core, &si476x_regmap_config);
-}
-EXPORT_SYMBOL_GPL(devm_regmap_init_si476x);
diff --git a/include/media/si476x.h b/include/media/si476x.h
new file mode 100644
index 000000000000..e02e241e2d22
--- /dev/null
+++ b/include/media/si476x.h
@@ -0,0 +1,37 @@
+/*
+ * include/media/si476x.h -- Common definitions for si476x driver
+ *
+ * Copyright (C) 2012 Innovative Converged Devices(ICD)
+ * Copyright (C) 2013 Andrey Smirnov
+ *
+ * Author: Andrey Smirnov <andrew.smirnov@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ */
+
+#ifndef SI476X_H
+#define SI476X_H
+
+#include <linux/types.h>
+#include <linux/videodev2.h>
+
+#include <linux/mfd/si476x-reports.h>
+
+enum si476x_ctrl_id {
+ V4L2_CID_SI476X_RSSI_THRESHOLD = (V4L2_CID_USER_SI476X_BASE + 1),
+ V4L2_CID_SI476X_SNR_THRESHOLD = (V4L2_CID_USER_SI476X_BASE + 2),
+ V4L2_CID_SI476X_MAX_TUNE_ERROR = (V4L2_CID_USER_SI476X_BASE + 3),
+ V4L2_CID_SI476X_HARMONICS_COUNT = (V4L2_CID_USER_SI476X_BASE + 4),
+ V4L2_CID_SI476X_DIVERSITY_MODE = (V4L2_CID_USER_SI476X_BASE + 5),
+ V4L2_CID_SI476X_INTERCHIP_LINK = (V4L2_CID_USER_SI476X_BASE + 6),
+};
+
+#endif /* SI476X_H*/