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regulator: wm8994: Fix shared GPIOs

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This reverts commit 3c6b38d45f "regulator: wm8994: Pass
descriptor instead of GPIO number" as it has problems with shared
GPIOs similar to that on s2mps11.

Reported-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Mark Brown 2018-05-30 15:15:20 +01:00
parent d1dae72fab
commit ab4d11e2c2
No known key found for this signature in database
GPG key ID: 24D68B725D5487D0
4 changed files with 22 additions and 26 deletions
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17
arch/arm/mach-s3c64xx/mach-crag6410-module.c
View file

@ -194,8 +194,8 @@ static struct wm8994_pdata wm8994_pdata = {
0x3, /* IRQ out, active high, CMOS */
},
.ldo = {
{ .init_data = &wm8994_ldo1, },
{ .init_data = &wm8994_ldo2, },
{ .enable = S3C64XX_GPN(6), .init_data = &wm8994_ldo1, },
{ .enable = S3C64XX_GPN(4), .init_data = &wm8994_ldo2, },
},
};
@ -203,18 +203,6 @@ static const struct i2c_board_info wm1277_devs[] = {
{ I2C_BOARD_INFO("wm8958", 0x1a), /* WM8958 is the superset */
.platform_data = &wm8994_pdata,
.irq = GLENFARCLAS_PMIC_IRQ_BASE + WM831X_IRQ_GPIO_2,
.dev_name = "wm8958",
},
};
static struct gpiod_lookup_table wm8994_gpiod_table = {
.dev_id = "i2c-wm8958", /* I2C device name */
.table = {
GPIO_LOOKUP("GPION", 6,
"wlf,ldo1ena", GPIO_ACTIVE_HIGH),
GPIO_LOOKUP("GPION", 4,
"wlf,ldo2ena", GPIO_ACTIVE_HIGH),
{ },
},
};
@ -393,7 +381,6 @@ static int wlf_gf_module_probe(struct i2c_client *i2c,
gpiod_add_lookup_table(&wm5102_reva_gpiod_table);
gpiod_add_lookup_table(&wm5102_gpiod_table);
gpiod_add_lookup_table(&wm8994_gpiod_table);
if (i < ARRAY_SIZE(gf_mods)) {
dev_info(&i2c->dev, "%s revision %d\n",

9
drivers/mfd/wm8994-core.c
View file

@ -21,6 +21,7 @@
#include <linux/mfd/core.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/of_gpio.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
@ -301,6 +302,14 @@ static int wm8994_set_pdata_from_of(struct wm8994 *wm8994)
if (of_find_property(np, "wlf,ldoena-always-driven", NULL))
pdata->lineout2fb = true;
pdata->ldo[0].enable = of_get_named_gpio(np, "wlf,ldo1ena", 0);
if (pdata->ldo[0].enable < 0)
pdata->ldo[0].enable = 0;
pdata->ldo[1].enable = of_get_named_gpio(np, "wlf,ldo2ena", 0);
if (pdata->ldo[1].enable < 0)
pdata->ldo[1].enable = 0;
return 0;
}
#else

19
drivers/regulator/wm8994-regulator.c
View file

@ -19,7 +19,7 @@
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/gpio/consumer.h>
#include <linux/gpio.h>
#include <linux/slab.h>
#include <linux/mfd/wm8994/core.h>
@ -129,7 +129,6 @@ static int wm8994_ldo_probe(struct platform_device *pdev)
int id = pdev->id % ARRAY_SIZE(pdata->ldo);
struct regulator_config config = { };
struct wm8994_ldo *ldo;
struct gpio_desc *gpiod;
int ret;
dev_dbg(&pdev->dev, "Probing LDO%d\n", id + 1);
@ -146,14 +145,12 @@ static int wm8994_ldo_probe(struct platform_device *pdev)
config.driver_data = ldo;
config.regmap = wm8994->regmap;
config.init_data = &ldo->init_data;
/* Look up LDO enable GPIO from the parent device node */
gpiod = devm_gpiod_get_optional(pdev->dev.parent,
id ? "wlf,ldo2ena" : "wlf,ldo1ena",
GPIOD_OUT_LOW);
if (IS_ERR(gpiod))
return PTR_ERR(gpiod);
config.ena_gpiod = gpiod;
if (pdata) {
config.ena_gpio = pdata->ldo[id].enable;
} else if (wm8994->dev->of_node) {
config.ena_gpio = wm8994->pdata.ldo[id].enable;
config.ena_gpio_initialized = true;
}
/* Use default constraints if none set up */
if (!pdata || !pdata->ldo[id].init_data || wm8994->dev->of_node) {
@ -162,7 +159,7 @@ static int wm8994_ldo_probe(struct platform_device *pdev)
ldo->init_data = wm8994_ldo_default[id];
ldo->init_data.consumer_supplies = &ldo->supply;
if (!gpiod)
if (!config.ena_gpio)
ldo->init_data.constraints.valid_ops_mask = 0;
} else {
ldo->init_data = *pdata->ldo[id].init_data;

3
include/linux/mfd/wm8994/pdata.h
View file

@ -20,6 +20,9 @@
#define WM8994_NUM_AIF 3
struct wm8994_ldo_pdata {
/** GPIOs to enable regulator, 0 or less if not available */
int enable;
const struct regulator_init_data *init_data;
};