diff options
Diffstat (limited to 'drivers/input/misc')
| -rw-r--r-- | drivers/input/misc/rotary_encoder.c | 74 |
1 files changed, 33 insertions, 41 deletions
diff --git a/drivers/input/misc/rotary_encoder.c b/drivers/input/misc/rotary_encoder.c index 713247146167..471175e5306b 100644 --- a/drivers/input/misc/rotary_encoder.c +++ b/drivers/input/misc/rotary_encoder.c @@ -20,12 +20,11 @@ #include <linux/input.h> #include <linux/device.h> #include <linux/platform_device.h> -#include <linux/gpio.h> +#include <linux/gpio/consumer.h> #include <linux/rotary_encoder.h> #include <linux/slab.h> #include <linux/of.h> #include <linux/of_platform.h> -#include <linux/of_gpio.h> #include <linux/pm.h> #define DRV_NAME "rotary-encoder" @@ -38,6 +37,9 @@ struct rotary_encoder { unsigned int axis; unsigned int pos; + struct gpio_desc *gpio_a; + struct gpio_desc *gpio_b; + unsigned int irq_a; unsigned int irq_b; @@ -47,13 +49,10 @@ struct rotary_encoder { char last_stable; }; -static int rotary_encoder_get_state(const struct rotary_encoder_platform_data *pdata) +static int rotary_encoder_get_state(struct rotary_encoder *encoder) { - int a = !!gpio_get_value_cansleep(pdata->gpio_a); - int b = !!gpio_get_value_cansleep(pdata->gpio_b); - - a ^= pdata->inverted_a; - b ^= pdata->inverted_b; + int a = !!gpiod_get_value_cansleep(encoder->gpio_a); + int b = !!gpiod_get_value_cansleep(encoder->gpio_b); return ((a << 1) | b); } @@ -97,7 +96,7 @@ static irqreturn_t rotary_encoder_irq(int irq, void *dev_id) mutex_lock(&encoder->access_mutex); - state = rotary_encoder_get_state(encoder->pdata); + state = rotary_encoder_get_state(encoder); switch (state) { case 0x0: @@ -130,7 +129,7 @@ static irqreturn_t rotary_encoder_half_period_irq(int irq, void *dev_id) mutex_lock(&encoder->access_mutex); - state = rotary_encoder_get_state(encoder->pdata); + state = rotary_encoder_get_state(encoder); switch (state) { case 0x00: @@ -160,7 +159,7 @@ static irqreturn_t rotary_encoder_quarter_period_irq(int irq, void *dev_id) mutex_lock(&encoder->access_mutex); - state = rotary_encoder_get_state(encoder->pdata); + state = rotary_encoder_get_state(encoder); /* * We encode the previous and the current state using a byte. @@ -218,7 +217,6 @@ static struct rotary_encoder_platform_data *rotary_encoder_parse_dt(struct devic of_match_device(rotary_encoder_of_match, dev); struct device_node *np = dev->of_node; struct rotary_encoder_platform_data *pdata; - enum of_gpio_flags flags; int error; if (!of_id || !np) @@ -232,12 +230,6 @@ static struct rotary_encoder_platform_data *rotary_encoder_parse_dt(struct devic of_property_read_u32(np, "rotary-encoder,steps", &pdata->steps); of_property_read_u32(np, "linux,axis", &pdata->axis); - pdata->gpio_a = of_get_gpio_flags(np, 0, &flags); - pdata->inverted_a = flags & OF_GPIO_ACTIVE_LOW; - - pdata->gpio_b = of_get_gpio_flags(np, 1, &flags); - pdata->inverted_b = flags & OF_GPIO_ACTIVE_LOW; - pdata->relative_axis = of_property_read_bool(np, "rotary-encoder,relative-axis"); pdata->rollover = of_property_read_bool(np, "rotary-encoder,rollover"); @@ -294,14 +286,32 @@ static int rotary_encoder_probe(struct platform_device *pdev) if (!encoder) return -ENOMEM; + mutex_init(&encoder->access_mutex); + encoder->pdata = pdata; + + encoder->gpio_a = devm_gpiod_get_index(dev, NULL, 0, GPIOD_IN); + if (IS_ERR(encoder->gpio_a)) { + err = PTR_ERR(encoder->gpio_a); + dev_err(dev, "unable to get GPIO at index 0: %d\n", err); + return err; + } + + encoder->irq_a = gpiod_to_irq(encoder->gpio_a); + + encoder->gpio_b = devm_gpiod_get_index(dev, NULL, 1, GPIOD_IN); + if (IS_ERR(encoder->gpio_b)) { + err = PTR_ERR(encoder->gpio_b); + dev_err(dev, "unable to get GPIO at index 1: %d\n", err); + return err; + } + + encoder->irq_b = gpiod_to_irq(encoder->gpio_b); + input = devm_input_allocate_device(dev); if (!input) return -ENOMEM; - mutex_init(&encoder->access_mutex); - encoder->input = input; - encoder->pdata = pdata; input->name = pdev->name; input->id.bustype = BUS_HOST; @@ -316,32 +326,14 @@ static int rotary_encoder_probe(struct platform_device *pdev) pdata->axis, 0, pdata->steps, 0, 1); } - /* request the GPIOs */ - err = devm_gpio_request_one(dev, pdata->gpio_a, GPIOF_IN, - dev_name(dev)); - if (err) { - dev_err(dev, "unable to request GPIO %d\n", pdata->gpio_a); - return err; - } - - err = devm_gpio_request_one(dev, pdata->gpio_b, GPIOF_IN, - dev_name(dev)); - if (err) { - dev_err(dev, "unable to request GPIO %d\n", pdata->gpio_b); - return err; - } - - encoder->irq_a = gpio_to_irq(pdata->gpio_a); - encoder->irq_b = gpio_to_irq(pdata->gpio_b); - switch (pdata->steps_per_period) { case 4: handler = &rotary_encoder_quarter_period_irq; - encoder->last_stable = rotary_encoder_get_state(pdata); + encoder->last_stable = rotary_encoder_get_state(encoder); break; case 2: handler = &rotary_encoder_half_period_irq; - encoder->last_stable = rotary_encoder_get_state(pdata); + encoder->last_stable = rotary_encoder_get_state(encoder); break; case 1: handler = &rotary_encoder_irq; |