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authorLinus Walleij <linus.walleij@linaro.org>2018-05-14 10:06:34 +0200
committerMark Brown <broonie@kernel.org>2018-05-17 16:22:33 +0900
commit3c6b38d45fa51c7c51c5e2347fc1a6bef6a46525 (patch)
tree894fdb9fc16319e80fc79a4aeee6873fe4980ef3 /drivers/regulator
parent456e7cdf3b1a14e2606b8b687385ab2e3f23a49a (diff)
regulator: wm8994: 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 or the board file decriptor table for the regulator. There is a single board file passing the GPIOs for LDO1 and LDO2 through platform data, so augment this to pass descriptors associated with the i2c device as well. The special GPIO enable DT property for the enable GPIO is nonstandard but this was accomodated in commit 6a537d48461deacc57c07ed86d9915e5aa4b3539 "gpio: of: Support regulator nonstandard GPIO properties". Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com> Acked-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/regulator')
-rw-r--r--drivers/regulator/wm8994-regulator.c19
1 files changed, 11 insertions, 8 deletions
diff --git a/drivers/regulator/wm8994-regulator.c b/drivers/regulator/wm8994-regulator.c
index 7a4ce6df4f22..d3a5f48119c2 100644
--- a/drivers/regulator/wm8994-regulator.c
+++ b/drivers/regulator/wm8994-regulator.c
@@ -19,7 +19,7 @@
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
#include <linux/slab.h>
#include <linux/mfd/wm8994/core.h>
@@ -129,6 +129,7 @@ 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);
@@ -145,12 +146,14 @@ static int wm8994_ldo_probe(struct platform_device *pdev)
config.driver_data = ldo;
config.regmap = wm8994->regmap;
config.init_data = &ldo->init_data;
- 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;
- }
+
+ /* 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;
/* Use default constraints if none set up */
if (!pdata || !pdata->ldo[id].init_data || wm8994->dev->of_node) {
@@ -159,7 +162,7 @@ static int wm8994_ldo_probe(struct platform_device *pdev)
ldo->init_data = wm8994_ldo_default[id];
ldo->init_data.consumer_supplies = &ldo->supply;
- if (!config.ena_gpio)
+ if (!gpiod)
ldo->init_data.constraints.valid_ops_mask = 0;
} else {
ldo->init_data = *pdata->ldo[id].init_data;