diff options
Diffstat (limited to 'drivers/media/i2c/noon010pc30.c')
-rw-r--r-- | drivers/media/i2c/noon010pc30.c | 75 |
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]; |