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authorKrzysztof Kozlowski <k.kozlowski@samsung.com>2014-04-30 12:40:42 +0400
committerMark Brown <broonie@linaro.org>2014-05-01 21:53:50 +0400
commitde5d05637f7e036a8122757b18ca6cfd1300f233 (patch)
treeb20cfbacd21c5222fd44eaf05011ab8026ee2314 /drivers/regulator/s2mps11.c
parent9b63cfbfd13b609e8d496852b6714ac686e31901 (diff)
downloadlinux-de5d05637f7e036a8122757b18ca6cfd1300f233.tar.xz
regulator: s2mps11: Allow GPIO 0 to be used as external control on S2MPS14
GPIO 0 is a valid GPIO so allow using it as external control for S2MPS14 regulators. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'drivers/regulator/s2mps11.c')
-rw-r--r--drivers/regulator/s2mps11.c22
1 files changed, 11 insertions, 11 deletions
diff --git a/drivers/regulator/s2mps11.c b/drivers/regulator/s2mps11.c
index 6dad0aa74a47..1583d4eaf911 100644
--- a/drivers/regulator/s2mps11.c
+++ b/drivers/regulator/s2mps11.c
@@ -412,7 +412,7 @@ static int s2mps14_regulator_enable(struct regulator_dev *rdev)
if (s2mps11->s2mps14_suspend_state & (1 << rdev_get_id(rdev)))
val = S2MPS14_ENABLE_SUSPEND;
- else if (s2mps11->ext_control_gpio[rdev_get_id(rdev)])
+ else if (gpio_is_valid(s2mps11->ext_control_gpio[rdev_get_id(rdev)]))
val = S2MPS14_ENABLE_EXT_CONTROL;
else
val = rdev->desc->enable_mask;
@@ -593,9 +593,7 @@ static void s2mps14_pmic_dt_parse_ext_control_gpio(struct platform_device *pdev,
gpio[reg] = of_get_named_gpio(rdata[reg].of_node,
"samsung,ext-control-gpios", 0);
- if (!gpio_is_valid(gpio[reg]))
- gpio[reg] = 0;
- else
+ if (gpio_is_valid(gpio[reg]))
dev_dbg(&pdev->dev, "Using GPIO %d for ext-control over %d/%s\n",
gpio[reg], reg, rdata[reg].name);
}
@@ -658,6 +656,12 @@ static int s2mps11_pmic_probe(struct platform_device *pdev)
GFP_KERNEL);
if (!s2mps11->ext_control_gpio)
return -ENOMEM;
+ /*
+ * 0 is a valid GPIO so initialize all GPIO-s to negative value
+ * to indicate that external control won't be used for this regulator.
+ */
+ for (i = 0; i < s2mps11->rdev_num; i++)
+ s2mps11->ext_control_gpio[i] = -EINVAL;
if (!iodev->dev->of_node) {
if (iodev->pdata) {
@@ -687,6 +691,7 @@ common_reg:
config.dev = &pdev->dev;
config.regmap = iodev->regmap_pmic;
config.driver_data = s2mps11;
+ config.ena_gpio_flags = GPIOF_OUT_INIT_HIGH;
for (i = 0; i < s2mps11->rdev_num; i++) {
struct regulator_dev *regulator;
@@ -697,12 +702,7 @@ common_reg:
config.init_data = rdata[i].init_data;
config.of_node = rdata[i].of_node;
}
-
- if (s2mps11->ext_control_gpio[i]) {
- config.ena_gpio = s2mps11->ext_control_gpio[i];
- config.ena_gpio_flags = GPIOF_OUT_INIT_HIGH;
- } else
- config.ena_gpio = config.ena_gpio_flags = 0;
+ config.ena_gpio = s2mps11->ext_control_gpio[i];
regulator = devm_regulator_register(&pdev->dev,
&regulators[i], &config);
@@ -713,7 +713,7 @@ common_reg:
goto out;
}
- if (s2mps11->ext_control_gpio[i]) {
+ if (gpio_is_valid(s2mps11->ext_control_gpio[i])) {
ret = s2mps14_pmic_enable_ext_control(s2mps11,
regulator);
if (ret < 0) {