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regulator: tps65090: Pass descriptor instead of GPIO number 

Instead of passing a global GPIO number for the enable GPIO, pass
a descriptor looked up from the device tree node for the
regulator.

This regulator supports passing platform data, but enable/sleep
regulators are looked up from the device tree exclusively, so
we can need not touch other files.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Linus Walleij 2018-05-14 10:06:33 +02:00 committed by Mark Brown
parent 9ae5cc75ce
commit 3012e81446
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
2 changed files with 28 additions and 30 deletions
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50
drivers/regulator/tps65090-regulator.c
View File

@ -19,8 +19,8 @@
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/gpio.h>
#include <linux/of_gpio.h>
#include <linux/of.h>
#include <linux/gpio/consumer.h>
#include <linux/slab.h>
#include <linux/err.h>
#include <linux/platform_device.h>
@ -300,26 +300,6 @@ static int tps65090_regulator_disable_ext_control(
return tps65090_config_ext_control(ri, false);
}
static void tps65090_configure_regulator_config(
struct tps65090_regulator_plat_data *tps_pdata,
struct regulator_config *config)
{
if (gpio_is_valid(tps_pdata->gpio)) {
int gpio_flag = GPIOF_OUT_INIT_LOW;
if (tps_pdata->reg_init_data->constraints.always_on ||
tps_pdata->reg_init_data->constraints.boot_on)
gpio_flag = GPIOF_OUT_INIT_HIGH;
config->ena_gpio = tps_pdata->gpio;
config->ena_gpio_initialized = true;
config->ena_gpio_flags = gpio_flag;
} else {
config->ena_gpio = -EINVAL;
config->ena_gpio_initialized = false;
}
}
#ifdef CONFIG_OF
static struct of_regulator_match tps65090_matches[] = {
{ .name = "dcdc1", },
@ -385,9 +365,26 @@ static struct tps65090_platform_data *tps65090_parse_dt_reg_data(
rpdata->enable_ext_control = of_property_read_bool(
tps65090_matches[idx].of_node,
"ti,enable-ext-control");
if (rpdata->enable_ext_control)
rpdata->gpio = of_get_named_gpio(np,
"dcdc-ext-control-gpios", 0);
if (rpdata->enable_ext_control) {
enum gpiod_flags gflags;
if (ri_data->constraints.always_on ||
ri_data->constraints.boot_on)
gflags = GPIOD_OUT_HIGH;
else
gflags = GPIOD_OUT_LOW;
rpdata->gpiod = devm_gpiod_get_from_of_node(&pdev->dev,
tps65090_matches[idx].of_node,
"dcdc-ext-control-gpios", 0,
gflags,
"tps65090");
if (IS_ERR(rpdata->gpiod))
return ERR_CAST(rpdata->gpiod);
if (!rpdata->gpiod)
dev_err(&pdev->dev,
"could not find DCDC external control GPIO\n");
}
if (of_property_read_u32(tps65090_matches[idx].of_node,
"ti,overcurrent-wait",
@ -455,8 +452,7 @@ static int tps65090_regulator_probe(struct platform_device *pdev)
*/
if (tps_pdata && is_dcdc(num) && tps_pdata->reg_init_data) {
if (tps_pdata->enable_ext_control) {
tps65090_configure_regulator_config(
tps_pdata, &config);
config.ena_gpiod = tps_pdata->gpiod;
ri->desc->ops = &tps65090_ext_control_ops;
} else {
ret = tps65090_regulator_disable_ext_control(

8
include/linux/mfd/tps65090.h
View File

@ -83,6 +83,8 @@ enum {
#define TPS65090_MAX_REG TPS65090_REG_AD_OUT2
#define TPS65090_NUM_REGS (TPS65090_MAX_REG + 1)
struct gpio_desc;
struct tps65090 {
struct device *dev;
struct regmap *rmap;
@ -95,8 +97,8 @@ struct tps65090 {
* @reg_init_data: The regulator init data.
* @enable_ext_control: Enable extrenal control or not. Only available for
* DCDC1, DCDC2 and DCDC3.
* @gpio: Gpio number if external control is enabled and controlled through
* gpio.
* @gpiod: Gpio descriptor if external control is enabled and controlled through
* gpio
* @overcurrent_wait_valid: True if the overcurrent_wait should be applied.
* @overcurrent_wait: Value to set as the overcurrent wait time. This is the
* actual bitfield value, not a time in ms (valid value are 0 - 3).
@ -104,7 +106,7 @@ struct tps65090 {
struct tps65090_regulator_plat_data {
struct regulator_init_data *reg_init_data;
bool enable_ext_control;
int gpio;
struct gpio_desc *gpiod;
bool overcurrent_wait_valid;
int overcurrent_wait;
};