diff options
Diffstat (limited to 'drivers/input')
| -rw-r--r-- | drivers/input/misc/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/input/misc/gpio_decoder.c | 42 |
2 files changed, 23 insertions, 20 deletions
diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig index 102e993bbd6b..b108c992bb7a 100644 --- a/drivers/input/misc/Kconfig +++ b/drivers/input/misc/Kconfig @@ -290,7 +290,6 @@ config INPUT_GPIO_BEEPER config INPUT_GPIO_DECODER tristate "Polled GPIO Decoder Input driver" depends on GPIOLIB || COMPILE_TEST - select INPUT_POLLDEV help Say Y here if you want driver to read status of multiple GPIO lines and report the encoded value as an absolute integer to diff --git a/drivers/input/misc/gpio_decoder.c b/drivers/input/misc/gpio_decoder.c index 1dca526e6f1a..145826a1a9a1 100644 --- a/drivers/input/misc/gpio_decoder.c +++ b/drivers/input/misc/gpio_decoder.c @@ -17,14 +17,12 @@ #include <linux/device.h> #include <linux/gpio/consumer.h> #include <linux/input.h> -#include <linux/input-polldev.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/of.h> #include <linux/platform_device.h> struct gpio_decoder { - struct input_polled_dev *poll_dev; struct gpio_descs *input_gpios; struct device *dev; u32 axis; @@ -53,15 +51,15 @@ static int gpio_decoder_get_gpios_state(struct gpio_decoder *decoder) return ret; } -static void gpio_decoder_poll_gpios(struct input_polled_dev *poll_dev) +static void gpio_decoder_poll_gpios(struct input_dev *input) { - struct gpio_decoder *decoder = poll_dev->private; + struct gpio_decoder *decoder = input_get_drvdata(input); int state; state = gpio_decoder_get_gpios_state(decoder); if (state >= 0 && state != decoder->last_stable) { - input_report_abs(poll_dev->input, decoder->axis, state); - input_sync(poll_dev->input); + input_report_abs(input, decoder->axis, state); + input_sync(input); decoder->last_stable = state; } } @@ -70,20 +68,23 @@ static int gpio_decoder_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct gpio_decoder *decoder; - struct input_polled_dev *poll_dev; + struct input_dev *input; u32 max; int err; - decoder = devm_kzalloc(dev, sizeof(struct gpio_decoder), GFP_KERNEL); + decoder = devm_kzalloc(dev, sizeof(*decoder), GFP_KERNEL); if (!decoder) return -ENOMEM; + decoder->dev = dev; device_property_read_u32(dev, "linux,axis", &decoder->axis); + decoder->input_gpios = devm_gpiod_get_array(dev, NULL, GPIOD_IN); if (IS_ERR(decoder->input_gpios)) { dev_err(dev, "unable to acquire input gpios\n"); return PTR_ERR(decoder->input_gpios); } + if (decoder->input_gpios->ndescs < 2) { dev_err(dev, "not enough gpios found\n"); return -EINVAL; @@ -92,22 +93,25 @@ static int gpio_decoder_probe(struct platform_device *pdev) if (device_property_read_u32(dev, "decoder-max-value", &max)) max = (1U << decoder->input_gpios->ndescs) - 1; - decoder->dev = dev; - poll_dev = devm_input_allocate_polled_device(decoder->dev); - if (!poll_dev) + input = devm_input_allocate_device(dev); + if (!input) return -ENOMEM; - poll_dev->private = decoder; - poll_dev->poll = gpio_decoder_poll_gpios; - decoder->poll_dev = poll_dev; + input_set_drvdata(input, decoder); - poll_dev->input->name = pdev->name; - poll_dev->input->id.bustype = BUS_HOST; - input_set_abs_params(poll_dev->input, decoder->axis, 0, max, 0, 0); + input->name = pdev->name; + input->id.bustype = BUS_HOST; + input_set_abs_params(input, decoder->axis, 0, max, 0, 0); + + err = input_setup_polling(input, gpio_decoder_poll_gpios); + if (err) { + dev_err(dev, "failed to set up polling\n"); + return err; + } - err = input_register_polled_device(poll_dev); + err = input_register_device(input); if (err) { - dev_err(dev, "failed to register polled device\n"); + dev_err(dev, "failed to register input device\n"); return err; } |