summaryrefslogtreecommitdiff
path: root/drivers/mfd
diff options
context:
space:
mode:
authorLinus Walleij <linus.walleij@linaro.org>2016-03-09 13:40:37 +0300
committerLinus Walleij <linus.walleij@linaro.org>2016-03-09 13:40:37 +0300
commit0bae2f17323a4630c487a9b77c37bebf407424af (patch)
treefc1f71a0209ec61841a5acb65d59d147af3cc4fa /drivers/mfd
parentadf32eaa05323449b74b36f25b918583e2bdb6f1 (diff)
parentca801a22f465eae39fadc770e15b5b7e82595f81 (diff)
downloadlinux-0bae2f17323a4630c487a9b77c37bebf407424af.tar.xz
Merge branch 'ib-mfd-regulator-gpio-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd into devel
Diffstat (limited to 'drivers/mfd')
-rw-r--r--drivers/mfd/Kconfig20
-rw-r--r--drivers/mfd/Makefile3
-rw-r--r--drivers/mfd/tps65912-core.c240
-rw-r--r--drivers/mfd/tps65912-i2c.c162
-rw-r--r--drivers/mfd/tps65912-irq.c217
-rw-r--r--drivers/mfd/tps65912-spi.c160
6 files changed, 198 insertions, 604 deletions
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 9ca66de0c1c1..1bc97c2761e4 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -1181,27 +1181,25 @@ config MFD_TPS65910
Power Management chips.
config MFD_TPS65912
- bool "TI TPS65912 Power Management chip"
- depends on GPIOLIB
+ tristate
select MFD_CORE
- help
- If you say yes here you get support for the TPS65912 series of
- PM chips.
+ select REGMAP
+ select REGMAP_IRQ
config MFD_TPS65912_I2C
- bool "TI TPS65912 Power Management chip with I2C"
- select MFD_CORE
+ tristate "TI TPS65912 Power Management chip with I2C"
select MFD_TPS65912
- depends on I2C=y && GPIOLIB
+ select REGMAP_I2C
+ depends on I2C
help
If you say yes here you get support for the TPS65912 series of
PM chips with I2C interface.
config MFD_TPS65912_SPI
- bool "TI TPS65912 Power Management chip with SPI"
- select MFD_CORE
+ tristate "TI TPS65912 Power Management chip with SPI"
select MFD_TPS65912
- depends on SPI_MASTER && GPIOLIB
+ select REGMAP_SPI
+ depends on SPI_MASTER
help
If you say yes here you get support for the TPS65912 series of
PM chips with SPI interface.
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index 0f230a6103f8..1811202cee19 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -73,8 +73,7 @@ obj-$(CONFIG_TPS6507X) += tps6507x.o
obj-$(CONFIG_MFD_TPS65217) += tps65217.o
obj-$(CONFIG_MFD_TPS65218) += tps65218.o
obj-$(CONFIG_MFD_TPS65910) += tps65910.o
-tps65912-objs := tps65912-core.o tps65912-irq.o
-obj-$(CONFIG_MFD_TPS65912) += tps65912.o
+obj-$(CONFIG_MFD_TPS65912) += tps65912-core.o
obj-$(CONFIG_MFD_TPS65912_I2C) += tps65912-i2c.o
obj-$(CONFIG_MFD_TPS65912_SPI) += tps65912-spi.o
obj-$(CONFIG_MFD_TPS80031) += tps80031.o
diff --git a/drivers/mfd/tps65912-core.c b/drivers/mfd/tps65912-core.c
index 1f82d60b1d0f..a88cfa80dbc4 100644
--- a/drivers/mfd/tps65912-core.c
+++ b/drivers/mfd/tps65912-core.c
@@ -1,175 +1,111 @@
/*
- * tps65912-core.c -- TI TPS65912x
+ * Core functions for TI TPS65912x PMICs
*
- * Copyright 2011 Texas Instruments Inc.
+ * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
+ * Andrew F. Davis <afd@ti.com>
*
- * Author: Margarita Olaya Cabrera <magi@slimlogic.co.uk>
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
*
- * 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; either version 2 of the License, or (at your
- * option) any later version.
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether expressed or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License version 2 for more details.
*
- * This driver is based on wm8350 implementation.
+ * Based on the TPS65218 driver and the previous TPS65912 driver by
+ * Margarita Olaya Cabrera <magi@slimlogic.co.uk>
*/
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/slab.h>
-#include <linux/gpio.h>
+#include <linux/interrupt.h>
#include <linux/mfd/core.h>
+#include <linux/module.h>
+
#include <linux/mfd/tps65912.h>
-static const struct mfd_cell tps65912s[] = {
- {
- .name = "tps65912-pmic",
- },
+static const struct mfd_cell tps65912_cells[] = {
+ { .name = "tps65912-regulator", },
+ { .name = "tps65912-gpio", },
};
-int tps65912_set_bits(struct tps65912 *tps65912, u8 reg, u8 mask)
-{
- u8 data;
- int err;
-
- mutex_lock(&tps65912->io_mutex);
-
- err = tps65912->read(tps65912, reg, 1, &data);
- if (err) {
- dev_err(tps65912->dev, "Read from reg 0x%x failed\n", reg);
- goto out;
- }
-
- data |= mask;
- err = tps65912->write(tps65912, reg, 1, &data);
- if (err)
- dev_err(tps65912->dev, "Write to reg 0x%x failed\n", reg);
+static const struct regmap_irq tps65912_irqs[] = {
+ /* INT_STS IRQs */
+ REGMAP_IRQ_REG(TPS65912_IRQ_PWRHOLD_F, 0, TPS65912_INT_STS_PWRHOLD_F),
+ REGMAP_IRQ_REG(TPS65912_IRQ_VMON, 0, TPS65912_INT_STS_VMON),
+ REGMAP_IRQ_REG(TPS65912_IRQ_PWRON, 0, TPS65912_INT_STS_PWRON),
+ REGMAP_IRQ_REG(TPS65912_IRQ_PWRON_LP, 0, TPS65912_INT_STS_PWRON_LP),
+ REGMAP_IRQ_REG(TPS65912_IRQ_PWRHOLD_R, 0, TPS65912_INT_STS_PWRHOLD_R),
+ REGMAP_IRQ_REG(TPS65912_IRQ_HOTDIE, 0, TPS65912_INT_STS_HOTDIE),
+ REGMAP_IRQ_REG(TPS65912_IRQ_GPIO1_R, 0, TPS65912_INT_STS_GPIO1_R),
+ REGMAP_IRQ_REG(TPS65912_IRQ_GPIO1_F, 0, TPS65912_INT_STS_GPIO1_F),
+ /* INT_STS2 IRQs */
+ REGMAP_IRQ_REG(TPS65912_IRQ_GPIO2_R, 1, TPS65912_INT_STS2_GPIO2_R),
+ REGMAP_IRQ_REG(TPS65912_IRQ_GPIO2_F, 1, TPS65912_INT_STS2_GPIO2_F),
+ REGMAP_IRQ_REG(TPS65912_IRQ_GPIO3_R, 1, TPS65912_INT_STS2_GPIO3_R),
+ REGMAP_IRQ_REG(TPS65912_IRQ_GPIO3_F, 1, TPS65912_INT_STS2_GPIO3_F),
+ REGMAP_IRQ_REG(TPS65912_IRQ_GPIO4_R, 1, TPS65912_INT_STS2_GPIO4_R),
+ REGMAP_IRQ_REG(TPS65912_IRQ_GPIO4_F, 1, TPS65912_INT_STS2_GPIO4_F),
+ REGMAP_IRQ_REG(TPS65912_IRQ_GPIO5_R, 1, TPS65912_INT_STS2_GPIO5_R),
+ REGMAP_IRQ_REG(TPS65912_IRQ_GPIO5_F, 1, TPS65912_INT_STS2_GPIO5_F),
+ /* INT_STS3 IRQs */
+ REGMAP_IRQ_REG(TPS65912_IRQ_PGOOD_DCDC1, 2, TPS65912_INT_STS3_PGOOD_DCDC1),
+ REGMAP_IRQ_REG(TPS65912_IRQ_PGOOD_DCDC2, 2, TPS65912_INT_STS3_PGOOD_DCDC2),
+ REGMAP_IRQ_REG(TPS65912_IRQ_PGOOD_DCDC3, 2, TPS65912_INT_STS3_PGOOD_DCDC3),
+ REGMAP_IRQ_REG(TPS65912_IRQ_PGOOD_DCDC4, 2, TPS65912_INT_STS3_PGOOD_DCDC4),
+ REGMAP_IRQ_REG(TPS65912_IRQ_PGOOD_LDO1, 2, TPS65912_INT_STS3_PGOOD_LDO1),
+ REGMAP_IRQ_REG(TPS65912_IRQ_PGOOD_LDO2, 2, TPS65912_INT_STS3_PGOOD_LDO2),
+ REGMAP_IRQ_REG(TPS65912_IRQ_PGOOD_LDO3, 2, TPS65912_INT_STS3_PGOOD_LDO3),
+ REGMAP_IRQ_REG(TPS65912_IRQ_PGOOD_LDO4, 2, TPS65912_INT_STS3_PGOOD_LDO4),
+ /* INT_STS4 IRQs */
+ REGMAP_IRQ_REG(TPS65912_IRQ_PGOOD_LDO5, 3, TPS65912_INT_STS4_PGOOD_LDO5),
+ REGMAP_IRQ_REG(TPS65912_IRQ_PGOOD_LDO6, 3, TPS65912_INT_STS4_PGOOD_LDO6),
+ REGMAP_IRQ_REG(TPS65912_IRQ_PGOOD_LDO7, 3, TPS65912_INT_STS4_PGOOD_LDO7),
+ REGMAP_IRQ_REG(TPS65912_IRQ_PGOOD_LDO8, 3, TPS65912_INT_STS4_PGOOD_LDO8),
+ REGMAP_IRQ_REG(TPS65912_IRQ_PGOOD_LDO9, 3, TPS65912_INT_STS4_PGOOD_LDO9),
+ REGMAP_IRQ_REG(TPS65912_IRQ_PGOOD_LDO10, 3, TPS65912_INT_STS4_PGOOD_LDO10),
+};
-out:
- mutex_unlock(&tps65912->io_mutex);
- return err;
-}
-EXPORT_SYMBOL_GPL(tps65912_set_bits);
+static struct regmap_irq_chip tps65912_irq_chip = {
+ .name = "tps65912",
+ .irqs = tps65912_irqs,
+ .num_irqs = ARRAY_SIZE(tps65912_irqs),
+ .num_regs = 4,
+ .irq_reg_stride = 2,
+ .mask_base = TPS65912_INT_MSK,
+ .status_base = TPS65912_INT_STS,
+ .ack_base = TPS65912_INT_STS,
+ .init_ack_masked = true,
+};
-int tps65912_clear_bits(struct tps65912 *tps65912, u8 reg, u8 mask)
+int tps65912_device_init(struct tps65912 *tps)
{
- u8 data;
- int err;
-
- mutex_lock(&tps65912->io_mutex);
- err = tps65912->read(tps65912, reg, 1, &data);
- if (err) {
- dev_err(tps65912->dev, "Read from reg 0x%x failed\n", reg);
- goto out;
+ int ret;
+
+ ret = regmap_add_irq_chip(tps->regmap, tps->irq, IRQF_ONESHOT, 0,
+ &tps65912_irq_chip, &tps->irq_data);
+ if (ret)
+ return ret;
+
+ ret = mfd_add_devices(tps->dev, PLATFORM_DEVID_AUTO, tps65912_cells,
+ ARRAY_SIZE(tps65912_cells), NULL, 0,
+ regmap_irq_get_domain(tps->irq_data));
+ if (ret) {
+ regmap_del_irq_chip(tps->irq, tps->irq_data);
+ return ret;
}
- data &= ~mask;
- err = tps65912->write(tps65912, reg, 1, &data);
- if (err)
- dev_err(tps65912->dev, "Write to reg 0x%x failed\n", reg);
-
-out:
- mutex_unlock(&tps65912->io_mutex);
- return err;
+ return 0;
}
-EXPORT_SYMBOL_GPL(tps65912_clear_bits);
+EXPORT_SYMBOL_GPL(tps65912_device_init);
-static inline int tps65912_read(struct tps65912 *tps65912, u8 reg)
+int tps65912_device_exit(struct tps65912 *tps)
{
- u8 val;
- int err;
-
- err = tps65912->read(tps65912, reg, 1, &val);
- if (err < 0)
- return err;
-
- return val;
-}
-
-static inline int tps65912_write(struct tps65912 *tps65912, u8 reg, u8 val)
-{
- return tps65912->write(tps65912, reg, 1, &val);
-}
-
-int tps65912_reg_read(struct tps65912 *tps65912, u8 reg)
-{
- int data;
-
- mutex_lock(&tps65912->io_mutex);
+ regmap_del_irq_chip(tps->irq, tps->irq_data);
- data = tps65912_read(tps65912, reg);
- if (data < 0)
- dev_err(tps65912->dev, "Read from reg 0x%x failed\n", reg);
-
- mutex_unlock(&tps65912->io_mutex);
- return data;
-}
-EXPORT_SYMBOL_GPL(tps65912_reg_read);
-
-int tps65912_reg_write(struct tps65912 *tps65912, u8 reg, u8 val)
-{
- int err;
-
- mutex_lock(&tps65912->io_mutex);
-
- err = tps65912_write(tps65912, reg, val);
- if (err < 0)
- dev_err(tps65912->dev, "Write for reg 0x%x failed\n", reg);
-
- mutex_unlock(&tps65912->io_mutex);
- return err;
-}
-EXPORT_SYMBOL_GPL(tps65912_reg_write);
-
-int tps65912_device_init(struct tps65912 *tps65912)
-{
- struct tps65912_board *pmic_plat_data = dev_get_platdata(tps65912->dev);
- struct tps65912_platform_data *init_data;
- int ret, dcdc_avs, value;
-
- init_data = kzalloc(sizeof(struct tps65912_platform_data), GFP_KERNEL);
- if (init_data == NULL)
- return -ENOMEM;
-
- mutex_init(&tps65912->io_mutex);
- dev_set_drvdata(tps65912->dev, tps65912);
-
- dcdc_avs = (pmic_plat_data->is_dcdc1_avs << 0 |
- pmic_plat_data->is_dcdc2_avs << 1 |
- pmic_plat_data->is_dcdc3_avs << 2 |
- pmic_plat_data->is_dcdc4_avs << 3);
- if (dcdc_avs) {
- tps65912->read(tps65912, TPS65912_I2C_SPI_CFG, 1, &value);
- dcdc_avs |= value;
- tps65912->write(tps65912, TPS65912_I2C_SPI_CFG, 1, &dcdc_avs);
- }
-
- ret = mfd_add_devices(tps65912->dev, -1,
- tps65912s, ARRAY_SIZE(tps65912s),
- NULL, 0, NULL);
- if (ret < 0)
- goto err;
-
- init_data->irq = pmic_plat_data->irq;
- init_data->irq_base = pmic_plat_data->irq_base;
- ret = tps65912_irq_init(tps65912, init_data->irq, init_data);
- if (ret < 0)
- goto err;
-
- kfree(init_data);
- return ret;
-
-err:
- kfree(init_data);
- mfd_remove_devices(tps65912->dev);
- return ret;
-}
-
-void tps65912_device_exit(struct tps65912 *tps65912)
-{
- mfd_remove_devices(tps65912->dev);
- tps65912_irq_exit(tps65912);
+ return 0;
}
+EXPORT_SYMBOL_GPL(tps65912_device_exit);
-MODULE_AUTHOR("Margarita Olaya <magi@slimlogic.co.uk>");
-MODULE_DESCRIPTION("TPS65912x chip family multi-function driver");
-MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
+MODULE_DESCRIPTION("TPS65912x MFD Driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/mfd/tps65912-i2c.c b/drivers/mfd/tps65912-i2c.c
index 7e55640b3ed5..45871403f995 100644
--- a/drivers/mfd/tps65912-i2c.c
+++ b/drivers/mfd/tps65912-i2c.c
@@ -1,139 +1,79 @@
/*
- * tps65912-i2c.c -- I2C access for TI TPS65912x PMIC
+ * I2C access driver for TI TPS65912x PMICs
*
- * Copyright 2011 Texas Instruments Inc.
+ * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
+ * Andrew F. Davis <afd@ti.com>
*
- * Author: Margarita Olaya Cabrera <magi@slimlogic.co.uk>
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
*
- * 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; either version 2 of the License, or (at your
- * option) any later version.
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether expressed or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License version 2 for more details.
*
- * This driver is based on wm8350 implementation.
+ * Based on the TPS65218 driver and the previous TPS65912 driver by
+ * Margarita Olaya Cabrera <magi@slimlogic.co.uk>
*/
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/gpio.h>
#include <linux/i2c.h>
-#include <linux/mfd/core.h>
-#include <linux/mfd/tps65912.h>
-
-static int tps65912_i2c_read(struct tps65912 *tps65912, u8 reg,
- int bytes, void *dest)
-{
- struct i2c_client *i2c = tps65912->control_data;
- struct i2c_msg xfer[2];
- int ret;
-
- /* Write register */
- xfer[0].addr = i2c->addr;
- xfer[0].flags = 0;
- xfer[0].len = 1;
- xfer[0].buf = &reg;
-
- /* Read data */
- xfer[1].addr = i2c->addr;
- xfer[1].flags = I2C_M_RD;
- xfer[1].len = bytes;
- xfer[1].buf = dest;
-
- ret = i2c_transfer(i2c->adapter, xfer, 2);
- if (ret == 2)
- ret = 0;
- else if (ret >= 0)
- ret = -EIO;
- return ret;
-}
-
-static int tps65912_i2c_write(struct tps65912 *tps65912, u8 reg,
- int bytes, void *src)
-{
- struct i2c_client *i2c = tps65912->control_data;
- /* we add 1 byte for device register */
- u8 msg[TPS6591X_MAX_REGISTER + 1];
- int ret;
-
- if (bytes > TPS6591X_MAX_REGISTER)
- return -EINVAL;
-
- msg[0] = reg;
- memcpy(&msg[1], src, bytes);
+#include <linux/module.h>
+#include <linux/regmap.h>
- ret = i2c_master_send(i2c, msg, bytes + 1);
- if (ret < 0)
- return ret;
- if (ret != bytes + 1)
- return -EIO;
+#include <linux/mfd/tps65912.h>
- return 0;
-}
+static const struct of_device_id tps65912_i2c_of_match_table[] = {
+ { .compatible = "ti,tps65912", },
+ { /* sentinel */ }
+};
-static int tps65912_i2c_probe(struct i2c_client *i2c,
- const struct i2c_device_id *id)
+static int tps65912_i2c_probe(struct i2c_client *client,
+ const struct i2c_device_id *ids)
{
- struct tps65912 *tps65912;
+ struct tps65912 *tps;
- tps65912 = devm_kzalloc(&i2c->dev,
- sizeof(struct tps65912), GFP_KERNEL);
- if (tps65912 == NULL)
+ tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL);
+ if (!tps)
return -ENOMEM;
- i2c_set_clientdata(i2c, tps65912);
- tps65912->dev = &i2c->dev;
- tps65912->control_data = i2c;
- tps65912->read = tps65912_i2c_read;
- tps65912->write = tps65912_i2c_write;
+ i2c_set_clientdata(client, tps);
+ tps->dev = &client->dev;
+ tps->irq = client->irq;
+
+ tps->regmap = devm_regmap_init_i2c(client, &tps65912_regmap_config);
+ if (IS_ERR(tps->regmap)) {
+ dev_err(tps->dev, "Failed to initialize register map\n");
+ return PTR_ERR(tps->regmap);
+ }
- return tps65912_device_init(tps65912);
+ return tps65912_device_init(tps);
}
-static int tps65912_i2c_remove(struct i2c_client *i2c)
+static int tps65912_i2c_remove(struct i2c_client *client)
{
- struct tps65912 *tps65912 = i2c_get_clientdata(i2c);
+ struct tps65912 *tps = i2c_get_clientdata(client);
- tps65912_device_exit(tps65912);
-
- return 0;
+ return tps65912_device_exit(tps);
}
-static const struct i2c_device_id tps65912_i2c_id[] = {
- {"tps65912", 0 },
- { }
+static const struct i2c_device_id tps65912_i2c_id_table[] = {
+ { "tps65912", 0 },
+ { /* sentinel */ }
};
-MODULE_DEVICE_TABLE(i2c, tps65912_i2c_id);
+MODULE_DEVICE_TABLE(i2c, tps65912_i2c_id_table);
static struct i2c_driver tps65912_i2c_driver = {
- .driver = {
- .name = "tps65912",
+ .driver = {
+ .name = "tps65912",
+ .of_match_table = tps65912_i2c_of_match_table,
},
- .probe = tps65912_i2c_probe,
- .remove = tps65912_i2c_remove,
- .id_table = tps65912_i2c_id,
+ .probe = tps65912_i2c_probe,
+ .remove = tps65912_i2c_remove,
+ .id_table = tps65912_i2c_id_table,
};
+module_i2c_driver(tps65912_i2c_driver);
-static int __init tps65912_i2c_init(void)
-{
- int ret;
-
- ret = i2c_add_driver(&tps65912_i2c_driver);
- if (ret != 0)
- pr_err("Failed to register TPS65912 I2C driver: %d\n", ret);
-
- return ret;
-}
-/* init early so consumer devices can complete system boot */
-subsys_initcall(tps65912_i2c_init);
-
-static void __exit tps65912_i2c_exit(void)
-{
- i2c_del_driver(&tps65912_i2c_driver);
-}
-module_exit(tps65912_i2c_exit);
-
-MODULE_AUTHOR("Margarita Olaya <magi@slimlogic.co.uk>");
-MODULE_DESCRIPTION("TPS6591x chip family multi-function driver");
-MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
+MODULE_DESCRIPTION("TPS65912x I2C Interface Driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/mfd/tps65912-irq.c b/drivers/mfd/tps65912-irq.c
deleted file mode 100644
index db2c29cb709b..000000000000
--- a/drivers/mfd/tps65912-irq.c
+++ /dev/null
@@ -1,217 +0,0 @@
-/*
- * tps65912-irq.c -- TI TPS6591x
- *
- * Copyright 2011 Texas Instruments Inc.
- *
- * Author: Margarita Olaya <magi@slimlogic.co.uk>
- *
- * 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; either version 2 of the License, or (at your
- * option) any later version.
- *
- * This driver is based on wm8350 implementation.
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/bug.h>
-#include <linux/device.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/gpio.h>
-#include <linux/mfd/tps65912.h>
-
-static inline int irq_to_tps65912_irq(struct tps65912 *tps65912,
- int irq)
-{
- return irq - tps65912->irq_base;
-}
-
-/*
- * This is a threaded IRQ handler so can access I2C/SPI. Since the
- * IRQ handler explicitly clears the IRQ it handles the IRQ line
- * will be reasserted and the physical IRQ will be handled again if
- * another interrupt is asserted while we run - in the normal course
- * of events this is a rare occurrence so we save I2C/SPI reads. We're
- * also assuming that it's rare to get lots of interrupts firing
- * simultaneously so try to minimise I/O.
- */
-static irqreturn_t tps65912_irq(int irq, void *irq_data)
-{
- struct tps65912 *tps65912 = irq_data;
- u32 irq_sts;
- u32 irq_mask;
- u8 reg;
- int i;
-
-
- tps65912->read(tps65912, TPS65912_INT_STS, 1, &reg);
- irq_sts = reg;
- tps65912->read(tps65912, TPS65912_INT_STS2, 1, &reg);
- irq_sts |= reg << 8;
- tps65912->read(tps65912, TPS65912_INT_STS3, 1, &reg);
- irq_sts |= reg << 16;
- tps65912->read(tps65912, TPS65912_INT_STS4, 1, &reg);
- irq_sts |= reg << 24;
-
- tps65912->read(tps65912, TPS65912_INT_MSK, 1, &reg);
- irq_mask = reg;
- tps65912->read(tps65912, TPS65912_INT_MSK2, 1, &reg);
- irq_mask |= reg << 8;
- tps65912->read(tps65912, TPS65912_INT_MSK3, 1, &reg);
- irq_mask |= reg << 16;
- tps65912->read(tps65912, TPS65912_INT_MSK4, 1, &reg);
- irq_mask |= reg << 24;
-
- irq_sts &= ~irq_mask;
- if (!irq_sts)
- return IRQ_NONE;
-
- for (i = 0; i < tps65912->irq_num; i++) {
- if (!(irq_sts & (1 << i)))
- continue;
-
- handle_nested_irq(tps65912->irq_base + i);
- }
-
- /* Write the STS register back to clear IRQs we handled */
- reg = irq_sts & 0xFF;
- irq_sts >>= 8;
- if (reg)
- tps65912->write(tps65912, TPS65912_INT_STS, 1, &reg);
- reg = irq_sts & 0xFF;
- irq_sts >>= 8;
- if (reg)
- tps65912->write(tps65912, TPS65912_INT_STS2, 1, &reg);
- reg = irq_sts & 0xFF;
- irq_sts >>= 8;
- if (reg)
- tps65912->write(tps65912, TPS65912_INT_STS3, 1, &reg);
- reg = irq_sts & 0xFF;
- if (reg)
- tps65912->write(tps65912, TPS65912_INT_STS4, 1, &reg);
-
- return IRQ_HANDLED;
-}
-
-static void tps65912_irq_lock(struct irq_data *data)
-{
- struct tps65912 *tps65912 = irq_data_get_irq_chip_data(data);
-
- mutex_lock(&tps65912->irq_lock);
-}
-
-static void tps65912_irq_sync_unlock(struct irq_data *data)
-{
- struct tps65912 *tps65912 = irq_data_get_irq_chip_data(data);
- u32 reg_mask;
- u8 reg;
-
- tps65912->read(tps65912, TPS65912_INT_MSK, 1, &reg);
- reg_mask = reg;
- tps65912->read(tps65912, TPS65912_INT_MSK2, 1, &reg);
- reg_mask |= reg << 8;
- tps65912->read(tps65912, TPS65912_INT_MSK3, 1, &reg);
- reg_mask |= reg << 16;
- tps65912->read(tps65912, TPS65912_INT_MSK4, 1, &reg);
- reg_mask |= reg << 24;
-
- if (tps65912->irq_mask != reg_mask) {
- reg = tps65912->irq_mask & 0xFF;
- tps65912->write(tps65912, TPS65912_INT_MSK, 1, &reg);
- reg = tps65912->irq_mask >> 8 & 0xFF;
- tps65912->write(tps65912, TPS65912_INT_MSK2, 1, &reg);
- reg = tps65912->irq_mask >> 16 & 0xFF;
- tps65912->write(tps65912, TPS65912_INT_MSK3, 1, &reg);
- reg = tps65912->irq_mask >> 24 & 0xFF;
- tps65912->write(tps65912, TPS65912_INT_MSK4, 1, &reg);
- }
-
- mutex_unlock(&tps65912->irq_lock);
-}
-
-static void tps65912_irq_enable(struct irq_data *data)
-{
- struct tps65912 *tps65912 = irq_data_get_irq_chip_data(data);
-
- tps65912->irq_mask &= ~(1 << irq_to_tps65912_irq(tps65912, data->irq));
-}
-
-static void tps65912_irq_disable(struct irq_data *data)
-{
- struct tps65912 *tps65912 = irq_data_get_irq_chip_data(data);
-
- tps65912->irq_mask |= (1 << irq_to_tps65912_irq(tps65912, data->irq));
-}
-
-static struct irq_chip tps65912_irq_chip = {
- .name = "tps65912",
- .irq_bus_lock = tps65912_irq_lock,
- .irq_bus_sync_unlock = tps65912_irq_sync_unlock,
- .irq_disable = tps65912_irq_disable,
- .irq_enable = tps65912_irq_enable,
-};
-
-int tps65912_irq_init(struct tps65912 *tps65912, int irq,
- struct tps65912_platform_data *pdata)
-{
- int ret, cur_irq;
- int flags = IRQF_ONESHOT;
- u8 reg;
-
- if (!irq) {
- dev_warn(tps65912->dev, "No interrupt support, no core IRQ\n");
- return 0;
- }
-
- if (!pdata || !pdata->irq_base) {
- dev_warn(tps65912->dev, "No interrupt support, no IRQ base\n");
- return 0;
- }
-
- /* Clear unattended interrupts */
- tps65912->read(tps65912, TPS65912_INT_STS, 1, &reg);
- tps65912->write(tps65912, TPS65912_INT_STS, 1, &reg);
- tps65912->read(tps65912, TPS65912_INT_STS2, 1, &reg);
- tps65912->write(tps65912, TPS65912_INT_STS2, 1, &reg);
- tps65912->read(tps65912, TPS65912_INT_STS3, 1, &reg);
- tps65912->write(tps65912, TPS65912_INT_STS3, 1, &reg);
- tps65912->read(tps65912, TPS65912_INT_STS4, 1, &reg);
- tps65912->write(tps65912, TPS65912_INT_STS4, 1, &reg);
-
- /* Mask top level interrupts */
- tps65912->irq_mask = 0xFFFFFFFF;
-
- mutex_init(&tps65912->irq_lock);
- tps65912->chip_irq = irq;
- tps65912->irq_base = pdata->irq_base;
-
- tps65912->irq_num = TPS65912_NUM_IRQ;
-
- /* Register with genirq */
- for (cur_irq = tps65912->irq_base;
- cur_irq < tps65912->irq_num + tps65912->irq_base;
- cur_irq++) {
- irq_set_chip_data(cur_irq, tps65912);
- irq_set_chip_and_handler(cur_irq, &tps65912_irq_chip,
- handle_edge_irq);
- irq_set_nested_thread(cur_irq, 1);
- irq_clear_status_flags(cur_irq, IRQ_NOREQUEST | IRQ_NOPROBE);
- }
-
- ret = request_threaded_irq(irq, NULL, tps65912_irq, flags,
- "tps65912", tps65912);
-
- irq_set_irq_type(irq, IRQ_TYPE_LEVEL_LOW);
- if (ret != 0)
- dev_err(tps65912->dev, "Failed to request IRQ: %d\n", ret);
-
- return ret;
-}
-
-int tps65912_irq_exit(struct tps65912 *tps65912)
-{
- free_irq(tps65912->chip_irq, tps65912);
- return 0;
-}
diff --git a/drivers/mfd/tps65912-spi.c b/drivers/mfd/tps65912-spi.c
index d59aa55b1495..4aeba9b6942a 100644
--- a/drivers/mfd/tps65912-spi.c
+++ b/drivers/mfd/tps65912-spi.c
@@ -1,140 +1,78 @@
/*
- * tps65912-spi.c -- SPI access for TI TPS65912x PMIC
+ * SPI access driver for TI TPS65912x PMICs
*
- * Copyright 2011 Texas Instruments Inc.
+ * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
+ * Andrew F. Davis <afd@ti.com>
*
- * Author: Margarita Olaya Cabrera <magi@slimlogic.co.uk>
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
*
- * 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; either version 2 of the License, or (at your
- * option) any later version.
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether expressed or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License version 2 for more details.
*
- * This driver is based on wm8350 implementation.
+ * Based on the TPS65218 driver and the previous TPS65912 driver by
+ * Margarita Olaya Cabrera <magi@slimlogic.co.uk>
*/
#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/gpio.h>
+#include <linux/regmap.h>
#include <linux/spi/spi.h>
-#include <linux/mfd/core.h>
-#include <linux/mfd/tps65912.h>
-
-static int tps65912_spi_write(struct tps65912 *tps65912, u8 addr,
- int bytes, void *src)
-{
- struct spi_device *spi = tps65912->control_data;
- u8 *data = (u8 *) src;
- int ret;
- /* bit 23 is the read/write bit */
- unsigned long spi_data = 1 << 23 | addr << 15 | *data;
- struct spi_transfer xfer;
- struct spi_message msg;
- u32 tx_buf;
-
- tx_buf = spi_data;
-
- xfer.tx_buf = &tx_buf;
- xfer.rx_buf = NULL;
- xfer.len = sizeof(unsigned long);
- xfer.bits_per_word = 24;
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfer, &msg);
-
- ret = spi_sync(spi, &msg);
- return ret;
-}
-
-static int tps65912_spi_read(struct tps65912 *tps65912, u8 addr,
- int bytes, void *dest)
-{
- struct spi_device *spi = tps65912->control_data;
- /* bit 23 is the read/write bit */
- unsigned long spi_data = 0 << 23 | addr << 15;
- struct spi_transfer xfer;
- struct spi_message msg;
- int ret;
- u8 *data = (u8 *) dest;
- u32 tx_buf, rx_buf;
-
- tx_buf = spi_data;
- rx_buf = 0;
- xfer.tx_buf = &tx_buf;
- xfer.rx_buf = &rx_buf;
- xfer.len = sizeof(unsigned long);
- xfer.bits_per_word = 24;
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfer, &msg);
-
- if (spi == NULL)
- return 0;
+#include <linux/mfd/tps65912.h>
- ret = spi_sync(spi, &msg);
- if (ret == 0)
- *data = (u8) (rx_buf & 0xFF);
- return ret;
-}
+static const struct of_device_id tps65912_spi_of_match_table[] = {
+ { .compatible = "ti,tps65912", },
+ { /* sentinel */ }
+};
static int tps65912_spi_probe(struct spi_device *spi)
{
- struct tps65912 *tps65912;
+ struct tps65912 *tps;
- tps65912 = devm_kzalloc(&spi->dev,
- sizeof(struct tps65912), GFP_KERNEL);
- if (tps65912 == NULL)
+ tps = devm_kzalloc(&spi->dev, sizeof(*tps), GFP_KERNEL);
+ if (!tps)
return -ENOMEM;
- tps65912->dev = &spi->dev;
- tps65912->control_data = spi;
- tps65912->read = tps65912_spi_read;
- tps65912->write = tps65912_spi_write;
+ spi_set_drvdata(spi, tps);
+ tps->dev = &spi->dev;
+ tps->irq = spi->irq;
- spi_set_drvdata(spi, tps65912);
+ tps->regmap = devm_regmap_init_spi(spi, &tps65912_regmap_config);
+ if (IS_ERR(tps->regmap)) {
+ dev_err(tps->dev, "Failed to initialize register map\n");
+ return PTR_ERR(tps->regmap);
+ }
- return tps65912_device_init(tps65912);
+ return tps65912_device_init(tps);
}
-static int tps65912_spi_remove(struct spi_device *spi)
+static int tps65912_spi_remove(struct spi_device *client)
{
- struct tps65912 *tps65912 = spi_get_drvdata(spi);
+ struct tps65912 *tps = spi_get_drvdata(client);
- tps65912_device_exit(tps65912);
-
- return 0;
+ return tps65912_device_exit(tps);
}
+static const struct spi_device_id tps65912_spi_id_table[] = {
+ { "tps65912", 0 },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(spi, tps65912_spi_id_table);
+
static struct spi_driver tps65912_spi_driver = {
- .driver = {
- .name = "tps65912",
+ .driver = {
+ .name = "tps65912",
+ .of_match_table = tps65912_spi_of_match_table,
},
- .probe = tps65912_spi_probe,
- .remove = tps65912_spi_remove,
+ .probe = tps65912_spi_probe,
+ .remove = tps65912_spi_remove,
+ .id_table = tps65912_spi_id_table,
};
+module_spi_driver(tps65912_spi_driver);
-static int __init tps65912_spi_init(void)
-{
- int ret;
-
- ret = spi_register_driver(&tps65912_spi_driver);
- if (ret != 0)
- pr_err("Failed to register TPS65912 SPI driver: %d\n", ret);
-
- return 0;
-}
-/* init early so consumer devices can complete system boot */
-subsys_initcall(tps65912_spi_init);
-
-static void __exit tps65912_spi_exit(void)
-{
- spi_unregister_driver(&tps65912_spi_driver);
-}
-module_exit(tps65912_spi_exit);
-
-MODULE_AUTHOR("Margarita Olaya <magi@slimlogic.co.uk>");
-MODULE_DESCRIPTION("SPI support for TPS65912 chip family mfd");
-MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
+MODULE_DESCRIPTION("TPS65912x SPI Interface Driver");
+MODULE_LICENSE("GPL v2");