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[media] mt9p031: Use bulk regulator API

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The sensor is powered by three supplies. Use the bulk regulator API to
enable and disable them instead of performing the operations manually.
This fixes a warning caused by ignoring the return value of
regulator_enable().

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Laurent Pinchart 2013-06-08 04:50:42 -03:00 committed by Mauro Carvalho Chehab
parent 8d4da37c30
commit 7997196cb4
1 changed files with 15 additions and 15 deletions
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30
drivers/media/i2c/mt9p031.c
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@ -125,9 +125,7 @@ struct mt9p031 {
int power_count;
struct clk *clk;
struct regulator *vaa;
struct regulator *vdd;
struct regulator *vdd_io;
struct regulator_bulk_data regulators[3];
enum mt9p031_model model;
struct aptina_pll pll;
@ -272,6 +270,8 @@ static inline int mt9p031_pll_disable(struct mt9p031 *mt9p031)
static int mt9p031_power_on(struct mt9p031 *mt9p031)
{
int ret;
/* Ensure RESET_BAR is low */
if (gpio_is_valid(mt9p031->reset)) {
gpio_set_value(mt9p031->reset, 0);
@ -279,9 +279,10 @@ static int mt9p031_power_on(struct mt9p031 *mt9p031)
}
/* Bring up the supplies */
regulator_enable(mt9p031->vdd);
regulator_enable(mt9p031->vdd_io);
regulator_enable(mt9p031->vaa);
ret = regulator_bulk_enable(ARRAY_SIZE(mt9p031->regulators),
mt9p031->regulators);
if (ret < 0)
return ret;
/* Emable clock */
if (mt9p031->clk)
@ -303,9 +304,8 @@ static void mt9p031_power_off(struct mt9p031 *mt9p031)
usleep_range(1000, 2000);
}
regulator_disable(mt9p031->vaa);
regulator_disable(mt9p031->vdd_io);
regulator_disable(mt9p031->vdd);
regulator_bulk_disable(ARRAY_SIZE(mt9p031->regulators),
mt9p031->regulators);
if (mt9p031->clk)
clk_disable_unprepare(mt9p031->clk);
@ -985,14 +985,14 @@ static int mt9p031_probe(struct i2c_client *client,
mt9p031->model = did->driver_data;
mt9p031->reset = -1;
mt9p031->vaa = devm_regulator_get(&client->dev, "vaa");
mt9p031->vdd = devm_regulator_get(&client->dev, "vdd");
mt9p031->vdd_io = devm_regulator_get(&client->dev, "vdd_io");
mt9p031->regulators[0].supply = "vdd";
mt9p031->regulators[1].supply = "vdd_io";
mt9p031->regulators[2].supply = "vaa";
if (IS_ERR(mt9p031->vaa) || IS_ERR(mt9p031->vdd) ||
IS_ERR(mt9p031->vdd_io)) {
ret = devm_regulator_bulk_get(&client->dev, 3, mt9p031->regulators);
if (ret < 0) {
dev_err(&client->dev, "Unable to get regulators\n");
return -ENODEV;
return ret;
}
v4l2_ctrl_handler_init(&mt9p031->ctrls, ARRAY_SIZE(mt9p031_ctrls) + 6);