linux/drivers/mfd/tps65910.c
Linus Torvalds 2dfea3803d This is the MFD patch set for the 3.8 merge window.
We have several new drivers, most of the time coming with their sub devices
 drivers:
 
 - Austria Microsystem's AS3711
 - Nano River's viperboard
 - TI's TPS80031, AM335x TS/ADC,
 - Realtek's MMC/memstick card reader
 - Nokia's retu
 
 We also got some notable cleanups and improvements:
 
 - tps6586x got converted to IRQ domains.
 - tps65910 and tps65090 moved to the regmap IRQ API.
 - STMPE is now Device Tree aware.
 - A general twl6040 and twl-core cleanup, with moves to the regmap I/O and IRQ
   APIs and a conversion to the recently added PWM framework.
 - sta2x11 gained regmap support.
 
 Then the rest is mostly tiny cleanups and fixes, among which we have Mark's
 wm5xxx and wm8xxx patchset.
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Merge tag 'mfd-3.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6

Pull MFS update from Samuel Ortiz:
 "This is the MFD patch set for the 3.8 merge window.

  We have several new drivers, most of the time coming with their sub
  devices drivers:

   - Austria Microsystem's AS3711
   - Nano River's viperboard
   - TI's TPS80031, AM335x TS/ADC,
   - Realtek's MMC/memstick card reader
   - Nokia's retu

  We also got some notable cleanups and improvements:

   - tps6586x got converted to IRQ domains.
   - tps65910 and tps65090 moved to the regmap IRQ API.
   - STMPE is now Device Tree aware.
   - A general twl6040 and twl-core cleanup, with moves to the regmap
     I/O and IRQ APIs and a conversion to the recently added PWM
     framework.
   - sta2x11 gained regmap support.

  Then the rest is mostly tiny cleanups and fixes, among which we have
  Mark's wm5xxx and wm8xxx patchset."

Far amount of annoying but largely trivial conflicts.  Many due to
__devinit/exit removal, others due to one or two of the new drivers also
having come in through another tree.

* tag 'mfd-3.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6: (119 commits)
  mfd: tps6507x: Convert to devm_kzalloc
  mfd: stmpe: Update DT support for stmpe driver
  mfd: wm5102: Add readback of DSP status 3 register
  mfd: arizona: Log if we fail to create the primary IRQ domain
  mfd: tps80031: MFD_TPS80031 needs to select REGMAP_IRQ
  mfd: tps80031: Add terminating entry for tps80031_id_table
  mfd: sta2x11: Fix potential NULL pointer dereference in __sta2x11_mfd_mask()
  mfd: wm5102: Add tuning for revision B
  mfd: arizona: Defer patch initialistation until after first device boot
  mfd: tps65910: Fix wrong ack_base register
  mfd: tps65910: Remove unused data
  mfd: stmpe: Get rid of irq_invert_polarity
  mfd: ab8500-core: Fix invalid free of devm_ allocated data
  mfd: wm5102: Mark DSP memory regions as volatile
  mfd: wm5102: Correct default for LDO1_CONTROL_2
  mfd: arizona: Register haptics devices
  mfd: wm8994: Make current device behaviour the default
  mfd: tps65090: MFD_TPS65090 needs to select REGMAP_IRQ
  mfd: Fix stmpe.c build when OF is not enabled
  mfd: jz4740-adc: Use devm_kzalloc
  ...
2012-12-16 18:55:20 -08:00

567 lines
13 KiB
C

/*
* tps65910.c -- TI TPS6591x
*
* Copyright 2010 Texas Instruments Inc.
*
* Author: Graeme Gregory <gg@slimlogic.co.uk>
* Author: Jorge Eduardo Candelaria <jedu@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.
*
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/err.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/irqdomain.h>
#include <linux/mfd/core.h>
#include <linux/regmap.h>
#include <linux/mfd/tps65910.h>
#include <linux/of_device.h>
static struct resource rtc_resources[] = {
{
.start = TPS65910_IRQ_RTC_ALARM,
.end = TPS65910_IRQ_RTC_ALARM,
.flags = IORESOURCE_IRQ,
}
};
static struct mfd_cell tps65910s[] = {
{
.name = "tps65910-gpio",
},
{
.name = "tps65910-pmic",
},
{
.name = "tps65910-rtc",
.num_resources = ARRAY_SIZE(rtc_resources),
.resources = &rtc_resources[0],
},
{
.name = "tps65910-power",
},
};
static const struct regmap_irq tps65911_irqs[] = {
/* INT_STS */
[TPS65911_IRQ_PWRHOLD_F] = {
.mask = INT_MSK_PWRHOLD_F_IT_MSK_MASK,
.reg_offset = 0,
},
[TPS65911_IRQ_VBAT_VMHI] = {
.mask = INT_MSK_VMBHI_IT_MSK_MASK,
.reg_offset = 0,
},
[TPS65911_IRQ_PWRON] = {
.mask = INT_MSK_PWRON_IT_MSK_MASK,
.reg_offset = 0,
},
[TPS65911_IRQ_PWRON_LP] = {
.mask = INT_MSK_PWRON_LP_IT_MSK_MASK,
.reg_offset = 0,
},
[TPS65911_IRQ_PWRHOLD_R] = {
.mask = INT_MSK_PWRHOLD_R_IT_MSK_MASK,
.reg_offset = 0,
},
[TPS65911_IRQ_HOTDIE] = {
.mask = INT_MSK_HOTDIE_IT_MSK_MASK,
.reg_offset = 0,
},
[TPS65911_IRQ_RTC_ALARM] = {
.mask = INT_MSK_RTC_ALARM_IT_MSK_MASK,
.reg_offset = 0,
},
[TPS65911_IRQ_RTC_PERIOD] = {
.mask = INT_MSK_RTC_PERIOD_IT_MSK_MASK,
.reg_offset = 0,
},
/* INT_STS2 */
[TPS65911_IRQ_GPIO0_R] = {
.mask = INT_MSK2_GPIO0_R_IT_MSK_MASK,
.reg_offset = 1,
},
[TPS65911_IRQ_GPIO0_F] = {
.mask = INT_MSK2_GPIO0_F_IT_MSK_MASK,
.reg_offset = 1,
},
[TPS65911_IRQ_GPIO1_R] = {
.mask = INT_MSK2_GPIO1_R_IT_MSK_MASK,
.reg_offset = 1,
},
[TPS65911_IRQ_GPIO1_F] = {
.mask = INT_MSK2_GPIO1_F_IT_MSK_MASK,
.reg_offset = 1,
},
[TPS65911_IRQ_GPIO2_R] = {
.mask = INT_MSK2_GPIO2_R_IT_MSK_MASK,
.reg_offset = 1,
},
[TPS65911_IRQ_GPIO2_F] = {
.mask = INT_MSK2_GPIO2_F_IT_MSK_MASK,
.reg_offset = 1,
},
[TPS65911_IRQ_GPIO3_R] = {
.mask = INT_MSK2_GPIO3_R_IT_MSK_MASK,
.reg_offset = 1,
},
[TPS65911_IRQ_GPIO3_F] = {
.mask = INT_MSK2_GPIO3_F_IT_MSK_MASK,
.reg_offset = 1,
},
/* INT_STS2 */
[TPS65911_IRQ_GPIO4_R] = {
.mask = INT_MSK3_GPIO4_R_IT_MSK_MASK,
.reg_offset = 2,
},
[TPS65911_IRQ_GPIO4_F] = {
.mask = INT_MSK3_GPIO4_F_IT_MSK_MASK,
.reg_offset = 2,
},
[TPS65911_IRQ_GPIO5_R] = {
.mask = INT_MSK3_GPIO5_R_IT_MSK_MASK,
.reg_offset = 2,
},
[TPS65911_IRQ_GPIO5_F] = {
.mask = INT_MSK3_GPIO5_F_IT_MSK_MASK,
.reg_offset = 2,
},
[TPS65911_IRQ_WTCHDG] = {
.mask = INT_MSK3_WTCHDG_IT_MSK_MASK,
.reg_offset = 2,
},
[TPS65911_IRQ_VMBCH2_H] = {
.mask = INT_MSK3_VMBCH2_H_IT_MSK_MASK,
.reg_offset = 2,
},
[TPS65911_IRQ_VMBCH2_L] = {
.mask = INT_MSK3_VMBCH2_L_IT_MSK_MASK,
.reg_offset = 2,
},
[TPS65911_IRQ_PWRDN] = {
.mask = INT_MSK3_PWRDN_IT_MSK_MASK,
.reg_offset = 2,
},
};
static const struct regmap_irq tps65910_irqs[] = {
/* INT_STS */
[TPS65910_IRQ_VBAT_VMBDCH] = {
.mask = TPS65910_INT_MSK_VMBDCH_IT_MSK_MASK,
.reg_offset = 0,
},
[TPS65910_IRQ_VBAT_VMHI] = {
.mask = TPS65910_INT_MSK_VMBHI_IT_MSK_MASK,
.reg_offset = 0,
},
[TPS65910_IRQ_PWRON] = {
.mask = TPS65910_INT_MSK_PWRON_IT_MSK_MASK,
.reg_offset = 0,
},
[TPS65910_IRQ_PWRON_LP] = {
.mask = TPS65910_INT_MSK_PWRON_LP_IT_MSK_MASK,
.reg_offset = 0,
},
[TPS65910_IRQ_PWRHOLD] = {
.mask = TPS65910_INT_MSK_PWRHOLD_IT_MSK_MASK,
.reg_offset = 0,
},
[TPS65910_IRQ_HOTDIE] = {
.mask = TPS65910_INT_MSK_HOTDIE_IT_MSK_MASK,
.reg_offset = 0,
},
[TPS65910_IRQ_RTC_ALARM] = {
.mask = TPS65910_INT_MSK_RTC_ALARM_IT_MSK_MASK,
.reg_offset = 0,
},
[TPS65910_IRQ_RTC_PERIOD] = {
.mask = TPS65910_INT_MSK_RTC_PERIOD_IT_MSK_MASK,
.reg_offset = 0,
},
/* INT_STS2 */
[TPS65910_IRQ_GPIO_R] = {
.mask = TPS65910_INT_MSK2_GPIO0_F_IT_MSK_MASK,
.reg_offset = 1,
},
[TPS65910_IRQ_GPIO_F] = {
.mask = TPS65910_INT_MSK2_GPIO0_R_IT_MSK_MASK,
.reg_offset = 1,
},
};
static struct regmap_irq_chip tps65911_irq_chip = {
.name = "tps65910",
.irqs = tps65911_irqs,
.num_irqs = ARRAY_SIZE(tps65911_irqs),
.num_regs = 3,
.irq_reg_stride = 2,
.status_base = TPS65910_INT_STS,
.mask_base = TPS65910_INT_MSK,
.ack_base = TPS65910_INT_STS,
};
static struct regmap_irq_chip tps65910_irq_chip = {
.name = "tps65910",
.irqs = tps65910_irqs,
.num_irqs = ARRAY_SIZE(tps65910_irqs),
.num_regs = 2,
.irq_reg_stride = 2,
.status_base = TPS65910_INT_STS,
.mask_base = TPS65910_INT_MSK,
.ack_base = TPS65910_INT_STS,
};
static int tps65910_irq_init(struct tps65910 *tps65910, int irq,
struct tps65910_platform_data *pdata)
{
int ret = 0;
static struct regmap_irq_chip *tps6591x_irqs_chip;
if (!irq) {
dev_warn(tps65910->dev, "No interrupt support, no core IRQ\n");
return -EINVAL;
}
if (!pdata) {
dev_warn(tps65910->dev, "No interrupt support, no pdata\n");
return -EINVAL;
}
switch (tps65910_chip_id(tps65910)) {
case TPS65910:
tps6591x_irqs_chip = &tps65910_irq_chip;
break;
case TPS65911:
tps6591x_irqs_chip = &tps65911_irq_chip;
break;
}
tps65910->chip_irq = irq;
ret = regmap_add_irq_chip(tps65910->regmap, tps65910->chip_irq,
IRQF_ONESHOT, pdata->irq_base,
tps6591x_irqs_chip, &tps65910->irq_data);
if (ret < 0)
dev_warn(tps65910->dev, "Failed to add irq_chip %d\n", ret);
return ret;
}
static int tps65910_irq_exit(struct tps65910 *tps65910)
{
if (tps65910->chip_irq > 0)
regmap_del_irq_chip(tps65910->chip_irq, tps65910->irq_data);
return 0;
}
static bool is_volatile_reg(struct device *dev, unsigned int reg)
{
struct tps65910 *tps65910 = dev_get_drvdata(dev);
/*
* Caching all regulator registers.
* All regualator register address range is same for
* TPS65910 and TPS65911
*/
if ((reg >= TPS65910_VIO) && (reg <= TPS65910_VDAC)) {
/* Check for non-existing register */
if (tps65910_chip_id(tps65910) == TPS65910)
if ((reg == TPS65911_VDDCTRL_OP) ||
(reg == TPS65911_VDDCTRL_SR))
return true;
return false;
}
return true;
}
static const struct regmap_config tps65910_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.volatile_reg = is_volatile_reg,
.max_register = TPS65910_MAX_REGISTER - 1,
.cache_type = REGCACHE_RBTREE,
};
static int tps65910_ck32k_init(struct tps65910 *tps65910,
struct tps65910_board *pmic_pdata)
{
int ret;
if (!pmic_pdata->en_ck32k_xtal)
return 0;
ret = tps65910_reg_clear_bits(tps65910, TPS65910_DEVCTRL,
DEVCTRL_CK32K_CTRL_MASK);
if (ret < 0) {
dev_err(tps65910->dev, "clear ck32k_ctrl failed: %d\n", ret);
return ret;
}
return 0;
}
static int tps65910_sleepinit(struct tps65910 *tps65910,
struct tps65910_board *pmic_pdata)
{
struct device *dev = NULL;
int ret = 0;
dev = tps65910->dev;
if (!pmic_pdata->en_dev_slp)
return 0;
/* enabling SLEEP device state */
ret = tps65910_reg_set_bits(tps65910, TPS65910_DEVCTRL,
DEVCTRL_DEV_SLP_MASK);
if (ret < 0) {
dev_err(dev, "set dev_slp failed: %d\n", ret);
goto err_sleep_init;
}
/* Return if there is no sleep keepon data. */
if (!pmic_pdata->slp_keepon)
return 0;
if (pmic_pdata->slp_keepon->therm_keepon) {
ret = tps65910_reg_set_bits(tps65910,
TPS65910_SLEEP_KEEP_RES_ON,
SLEEP_KEEP_RES_ON_THERM_KEEPON_MASK);
if (ret < 0) {
dev_err(dev, "set therm_keepon failed: %d\n", ret);
goto disable_dev_slp;
}
}
if (pmic_pdata->slp_keepon->clkout32k_keepon) {
ret = tps65910_reg_set_bits(tps65910,
TPS65910_SLEEP_KEEP_RES_ON,
SLEEP_KEEP_RES_ON_CLKOUT32K_KEEPON_MASK);
if (ret < 0) {
dev_err(dev, "set clkout32k_keepon failed: %d\n", ret);
goto disable_dev_slp;
}
}
if (pmic_pdata->slp_keepon->i2chs_keepon) {
ret = tps65910_reg_set_bits(tps65910,
TPS65910_SLEEP_KEEP_RES_ON,
SLEEP_KEEP_RES_ON_I2CHS_KEEPON_MASK);
if (ret < 0) {
dev_err(dev, "set i2chs_keepon failed: %d\n", ret);
goto disable_dev_slp;
}
}
return 0;
disable_dev_slp:
tps65910_reg_clear_bits(tps65910, TPS65910_DEVCTRL,
DEVCTRL_DEV_SLP_MASK);
err_sleep_init:
return ret;
}
#ifdef CONFIG_OF
static struct of_device_id tps65910_of_match[] = {
{ .compatible = "ti,tps65910", .data = (void *)TPS65910},
{ .compatible = "ti,tps65911", .data = (void *)TPS65911},
{ },
};
MODULE_DEVICE_TABLE(of, tps65910_of_match);
static struct tps65910_board *tps65910_parse_dt(struct i2c_client *client,
int *chip_id)
{
struct device_node *np = client->dev.of_node;
struct tps65910_board *board_info;
unsigned int prop;
const struct of_device_id *match;
int ret = 0;
match = of_match_device(tps65910_of_match, &client->dev);
if (!match) {
dev_err(&client->dev, "Failed to find matching dt id\n");
return NULL;
}
*chip_id = (int)match->data;
board_info = devm_kzalloc(&client->dev, sizeof(*board_info),
GFP_KERNEL);
if (!board_info) {
dev_err(&client->dev, "Failed to allocate pdata\n");
return NULL;
}
ret = of_property_read_u32(np, "ti,vmbch-threshold", &prop);
if (!ret)
board_info->vmbch_threshold = prop;
else if (*chip_id == TPS65911)
dev_warn(&client->dev, "VMBCH-Threshold not specified");
ret = of_property_read_u32(np, "ti,vmbch2-threshold", &prop);
if (!ret)
board_info->vmbch2_threshold = prop;
else if (*chip_id == TPS65911)
dev_warn(&client->dev, "VMBCH2-Threshold not specified");
prop = of_property_read_bool(np, "ti,en-ck32k-xtal");
board_info->en_ck32k_xtal = prop;
board_info->irq = client->irq;
board_info->irq_base = -1;
board_info->pm_off = of_property_read_bool(np,
"ti,system-power-controller");
return board_info;
}
#else
static inline
struct tps65910_board *tps65910_parse_dt(struct i2c_client *client,
int *chip_id)
{
return NULL;
}
#endif
static struct i2c_client *tps65910_i2c_client;
static void tps65910_power_off(void)
{
struct tps65910 *tps65910;
tps65910 = dev_get_drvdata(&tps65910_i2c_client->dev);
if (tps65910_reg_set_bits(tps65910, TPS65910_DEVCTRL,
DEVCTRL_PWR_OFF_MASK) < 0)
return;
tps65910_reg_clear_bits(tps65910, TPS65910_DEVCTRL,
DEVCTRL_DEV_ON_MASK);
}
static int tps65910_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct tps65910 *tps65910;
struct tps65910_board *pmic_plat_data;
struct tps65910_board *of_pmic_plat_data = NULL;
struct tps65910_platform_data *init_data;
int ret = 0;
int chip_id = id->driver_data;
pmic_plat_data = dev_get_platdata(&i2c->dev);
if (!pmic_plat_data && i2c->dev.of_node) {
pmic_plat_data = tps65910_parse_dt(i2c, &chip_id);
of_pmic_plat_data = pmic_plat_data;
}
if (!pmic_plat_data)
return -EINVAL;
init_data = devm_kzalloc(&i2c->dev, sizeof(*init_data), GFP_KERNEL);
if (init_data == NULL)
return -ENOMEM;
tps65910 = devm_kzalloc(&i2c->dev, sizeof(*tps65910), GFP_KERNEL);
if (tps65910 == NULL)
return -ENOMEM;
tps65910->of_plat_data = of_pmic_plat_data;
i2c_set_clientdata(i2c, tps65910);
tps65910->dev = &i2c->dev;
tps65910->i2c_client = i2c;
tps65910->id = chip_id;
tps65910->regmap = devm_regmap_init_i2c(i2c, &tps65910_regmap_config);
if (IS_ERR(tps65910->regmap)) {
ret = PTR_ERR(tps65910->regmap);
dev_err(&i2c->dev, "regmap initialization failed: %d\n", ret);
return ret;
}
init_data->irq = pmic_plat_data->irq;
init_data->irq_base = pmic_plat_data->irq_base;
tps65910_irq_init(tps65910, init_data->irq, init_data);
tps65910_ck32k_init(tps65910, pmic_plat_data);
tps65910_sleepinit(tps65910, pmic_plat_data);
if (pmic_plat_data->pm_off && !pm_power_off) {
tps65910_i2c_client = i2c;
pm_power_off = tps65910_power_off;
}
ret = mfd_add_devices(tps65910->dev, -1,
tps65910s, ARRAY_SIZE(tps65910s),
NULL, 0,
regmap_irq_get_domain(tps65910->irq_data));
if (ret < 0) {
dev_err(&i2c->dev, "mfd_add_devices failed: %d\n", ret);
return ret;
}
return ret;
}
static int tps65910_i2c_remove(struct i2c_client *i2c)
{
struct tps65910 *tps65910 = i2c_get_clientdata(i2c);
tps65910_irq_exit(tps65910);
mfd_remove_devices(tps65910->dev);
return 0;
}
static const struct i2c_device_id tps65910_i2c_id[] = {
{ "tps65910", TPS65910 },
{ "tps65911", TPS65911 },
{ }
};
MODULE_DEVICE_TABLE(i2c, tps65910_i2c_id);
static struct i2c_driver tps65910_i2c_driver = {
.driver = {
.name = "tps65910",
.owner = THIS_MODULE,
.of_match_table = of_match_ptr(tps65910_of_match),
},
.probe = tps65910_i2c_probe,
.remove = tps65910_i2c_remove,
.id_table = tps65910_i2c_id,
};
static int __init tps65910_i2c_init(void)
{
return i2c_add_driver(&tps65910_i2c_driver);
}
/* init early so consumer devices can complete system boot */
subsys_initcall(tps65910_i2c_init);
static void __exit tps65910_i2c_exit(void)
{
i2c_del_driver(&tps65910_i2c_driver);
}
module_exit(tps65910_i2c_exit);
MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>");
MODULE_AUTHOR("Jorge Eduardo Candelaria <jedu@slimlogic.co.uk>");
MODULE_DESCRIPTION("TPS6591x chip family multi-function driver");
MODULE_LICENSE("GPL");