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path: root/drivers/media/i2c/noon010pc30.c
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Diffstat (limited to 'drivers/media/i2c/noon010pc30.c')
-rw-r--r--drivers/media/i2c/noon010pc30.c75
1 files changed, 35 insertions, 40 deletions
diff --git a/drivers/media/i2c/noon010pc30.c b/drivers/media/i2c/noon010pc30.c
index f3ac379ef34a..bc5187f46365 100644
--- a/drivers/media/i2c/noon010pc30.c
+++ b/drivers/media/i2c/noon010pc30.c
@@ -10,7 +10,7 @@
*/
#include <linux/delay.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/regulator/consumer.h>
@@ -130,8 +130,8 @@ struct noon010_info {
struct media_pad pad;
struct v4l2_ctrl_handler hdl;
struct regulator_bulk_data supply[NOON010_NUM_SUPPLIES];
- u32 gpio_nreset;
- u32 gpio_nstby;
+ struct gpio_desc *reset;
+ struct gpio_desc *stby;
/* Protects the struct members below */
struct mutex lock;
@@ -393,29 +393,33 @@ static int power_enable(struct noon010_info *info)
return 0;
}
- if (gpio_is_valid(info->gpio_nstby))
- gpio_set_value(info->gpio_nstby, 0);
+ /* Assert standby: line should be flagged active low in descriptor */
+ if (info->stby)
+ gpiod_set_value(info->stby, 1);
- if (gpio_is_valid(info->gpio_nreset))
- gpio_set_value(info->gpio_nreset, 0);
+ /* Assert reset: line should be flagged active low in descriptor */
+ if (info->reset)
+ gpiod_set_value(info->reset, 1);
ret = regulator_bulk_enable(NOON010_NUM_SUPPLIES, info->supply);
if (ret)
return ret;
- if (gpio_is_valid(info->gpio_nreset)) {
+ /* De-assert reset and standby */
+ if (info->reset) {
msleep(50);
- gpio_set_value(info->gpio_nreset, 1);
+ gpiod_set_value(info->reset, 0);
}
- if (gpio_is_valid(info->gpio_nstby)) {
+ if (info->stby) {
udelay(1000);
- gpio_set_value(info->gpio_nstby, 1);
+ gpiod_set_value(info->stby, 0);
}
- if (gpio_is_valid(info->gpio_nreset)) {
+ /* Cycle reset: assert and deassert */
+ if (info->reset) {
udelay(1000);
- gpio_set_value(info->gpio_nreset, 0);
+ gpiod_set_value(info->reset, 1);
msleep(100);
- gpio_set_value(info->gpio_nreset, 1);
+ gpiod_set_value(info->reset, 0);
msleep(20);
}
info->power = 1;
@@ -438,11 +442,12 @@ static int power_disable(struct noon010_info *info)
if (ret)
return ret;
- if (gpio_is_valid(info->gpio_nstby))
- gpio_set_value(info->gpio_nstby, 0);
+ /* Assert standby and reset */
+ if (info->stby)
+ gpiod_set_value(info->stby, 1);
- if (gpio_is_valid(info->gpio_nreset))
- gpio_set_value(info->gpio_nreset, 0);
+ if (info->reset)
+ gpiod_set_value(info->reset, 1);
info->power = 0;
@@ -741,34 +746,24 @@ static int noon010_probe(struct i2c_client *client,
goto np_err;
info->i2c_reg_page = -1;
- info->gpio_nreset = -EINVAL;
- info->gpio_nstby = -EINVAL;
info->curr_fmt = &noon010_formats[0];
info->curr_win = &noon010_sizes[0];
- if (gpio_is_valid(pdata->gpio_nreset)) {
- ret = devm_gpio_request_one(&client->dev, pdata->gpio_nreset,
- GPIOF_OUT_INIT_LOW,
- "NOON010PC30 NRST");
- if (ret) {
- dev_err(&client->dev, "GPIO request error: %d\n", ret);
- goto np_err;
- }
- info->gpio_nreset = pdata->gpio_nreset;
- gpio_export(info->gpio_nreset, 0);
+ /* Request reset asserted so we get put into reset */
+ info->reset = devm_gpiod_get(&client->dev, "reset", GPIOD_OUT_HIGH);
+ if (IS_ERR(info->reset)) {
+ ret = PTR_ERR(info->reset);
+ goto np_err;
}
+ gpiod_set_consumer_name(info->reset, "NOON010PC30 NRST");
- if (gpio_is_valid(pdata->gpio_nstby)) {
- ret = devm_gpio_request_one(&client->dev, pdata->gpio_nstby,
- GPIOF_OUT_INIT_LOW,
- "NOON010PC30 NSTBY");
- if (ret) {
- dev_err(&client->dev, "GPIO request error: %d\n", ret);
- goto np_err;
- }
- info->gpio_nstby = pdata->gpio_nstby;
- gpio_export(info->gpio_nstby, 0);
+ /* Request standby asserted so we get put into standby */
+ info->stby = devm_gpiod_get(&client->dev, "standby", GPIOD_OUT_HIGH);
+ if (IS_ERR(info->stby)) {
+ ret = PTR_ERR(info->stby);
+ goto np_err;
}
+ gpiod_set_consumer_name(info->reset, "NOON010PC30 STBY");
for (i = 0; i < NOON010_NUM_SUPPLIES; i++)
info->supply[i].supply = noon010_supply_name[i];