Hi Dmitry,
On Mon, Jun 10, 2013 at 11:23:47, Dmitry Torokhov wrote:
> There is no need to roll our own polling scheme when we already have
> one implemented by the core.
Please let me know, on which branch this patch series is based on?
I failed to apply these patches on master branch of "linux-next".
>
> Signed-off-by: Dmitry Torokhov <dmitry.torok...@gmail.com>
> ---
> drivers/input/touchscreen/tps6507x-ts.c | 126
> ++++++++++++--------------------
> include/linux/mfd/tps6507x.h | 1 -
> 2 files changed, 48 insertions(+), 79 deletions(-)
>
> diff --git a/drivers/input/touchscreen/tps6507x-ts.c
> b/drivers/input/touchscreen/tps6507x-ts.c
> index d3c2967..94cde2c 100644
> --- a/drivers/input/touchscreen/tps6507x-ts.c
> +++ b/drivers/input/touchscreen/tps6507x-ts.c
> @@ -17,6 +17,7 @@
> #include <linux/workqueue.h>
> #include <linux/slab.h>
> #include <linux/input.h>
> +#include <linux/input-polldev.h>
> #include <linux/platform_device.h>
> #include <linux/mfd/tps6507x.h>
> #include <linux/input/tps6507x-ts.h>
> @@ -38,14 +39,12 @@ struct ts_event {
> };
>
> struct tps6507x_ts {
> - struct input_dev *input_dev;
> struct device *dev;
> + struct input_polled_dev *poll_dev;
> + struct tps6507x_dev *mfd;
> char phys[32];
> - struct delayed_work work;
> struct ts_event tc;
> - struct tps6507x_dev *mfd;
> u16 min_pressure;
> - unsigned long poll_period; /* ms */
> bool pendown;
> };
>
> @@ -156,13 +155,11 @@ static s32 tps6507x_adc_standby(struct tps6507x_ts *tsc)
> return ret;
> }
>
> -static void tps6507x_ts_handler(struct work_struct *work)
> +static void tps6507x_ts_poll(struct input_polled_dev *poll_dev)
> {
> - struct tps6507x_ts *tsc = container_of(work,
> - struct tps6507x_ts, work.work);
> - struct input_dev *input_dev = tsc->input_dev;
> + struct tps6507x_ts *tsc = poll_dev->private;
> + struct input_dev *input_dev = poll_dev->input;
> bool pendown;
> - int schd;
> s32 ret;
>
> ret = tps6507x_adc_conversion(tsc, TPS6507X_TSCMODE_PRESSURE,
> @@ -206,62 +203,65 @@ static void tps6507x_ts_handler(struct work_struct
> *work)
> }
>
> done:
> - /* always poll if not using interrupts */
> - schd = schedule_delayed_work(&tsc->work,
> - msecs_to_jiffies(tsc->poll_period));
> - if (!schd)
> - dev_err(tsc->dev, "re-schedule failed");
> -
> - ret = tps6507x_adc_standby(tsc);
> + tps6507x_adc_standby(tsc);
> }
>
> static int tps6507x_ts_probe(struct platform_device *pdev)
> {
> - int error;
> - struct tps6507x_ts *tsc;
> struct tps6507x_dev *tps6507x_dev = dev_get_drvdata(pdev->dev.parent);
> - struct touchscreen_init_data *init_data;
> + const struct tps6507x_board *tps_board;
> + const struct touchscreen_init_data *init_data;
> + struct tps6507x_ts *tsc;
> + struct input_polled_dev *poll_dev;
> struct input_dev *input_dev;
> - struct tps6507x_board *tps_board;
> - int schd;
> + int error;
>
> - /**
> + /*
> * tps_board points to pmic related constants
> * coming from the board-evm file.
> */
> -
> - tps_board = (struct tps6507x_board *)tps6507x_dev->dev->platform_data;
> -
> + tps_board = dev_get_platdata(tps6507x_dev->dev);
> if (!tps_board) {
> dev_err(tps6507x_dev->dev,
> "Could not find tps6507x platform data\n");
> - return -EIO;
> + return -ENODEV;
> }
>
> - /**
> + /*
> * init_data points to array of regulator_init structures
> * coming from the board-evm file.
> */
> -
> init_data = tps_board->tps6507x_ts_init_data;
>
> tsc = kzalloc(sizeof(struct tps6507x_ts), GFP_KERNEL);
> if (!tsc) {
> dev_err(tps6507x_dev->dev, "failed to allocate driver data\n");
> - error = -ENOMEM;
> - goto err0;
> + return -ENOMEM;
> }
>
> - tps6507x_dev->ts = tsc;
> tsc->mfd = tps6507x_dev;
> tsc->dev = tps6507x_dev->dev;
> - input_dev = input_allocate_device();
> - if (!input_dev) {
> - dev_err(tsc->dev, "Failed to allocate input device.\n");
> + tsc->min_pressure = init_data ?
> + init_data->min_pressure : TPS_DEFAULT_MIN_PRESSURE;
> +
> + snprintf(tsc->phys, sizeof(tsc->phys),
> + "%s/input0", dev_name(tsc->dev));
> +
> + poll_dev = input_allocate_polled_device();
> + if (!poll_dev) {
> + dev_err(tsc->dev, "Failed to allocate polled input device.\n");
> error = -ENOMEM;
> - goto err1;
> + goto err_free_mem;
> }
>
> + tsc->poll_dev = poll_dev;
> +
> + poll_dev->private = tsc;
> + poll_dev->poll = tps6507x_ts_poll;
> + poll_dev->poll_interval = init_data ?
> + init_data->poll_period : TSC_DEFAULT_POLL_PERIOD;
> +
> + input_dev = poll_dev->input;
> input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
> input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
>
> @@ -270,72 +270,42 @@ static int tps6507x_ts_probe(struct platform_device
> *pdev)
> input_set_abs_params(input_dev, ABS_PRESSURE, 0, MAX_10BIT, 0, 0);
>
> input_dev->name = "TPS6507x Touchscreen";
> - input_dev->id.bustype = BUS_I2C;
> - input_dev->dev.parent = tsc->dev;
> -
> - snprintf(tsc->phys, sizeof(tsc->phys),
> - "%s/input0", dev_name(tsc->dev));
> input_dev->phys = tsc->phys;
> -
> - dev_dbg(tsc->dev, "device: %s\n", input_dev->phys);
> -
> - input_set_drvdata(input_dev, tsc);
> -
> - tsc->input_dev = input_dev;
> -
> - INIT_DELAYED_WORK(&tsc->work, tps6507x_ts_handler);
> -
> + input_dev->dev.parent = tsc->dev;
> + input_dev->id.bustype = BUS_I2C;
> if (init_data) {
> - tsc->poll_period = init_data->poll_period;
> - tsc->min_pressure = init_data->min_pressure;
> input_dev->id.vendor = init_data->vendor;
> input_dev->id.product = init_data->product;
> input_dev->id.version = init_data->version;
> - } else {
> - tsc->poll_period = TSC_DEFAULT_POLL_PERIOD;
> - tsc->min_pressure = TPS_DEFAULT_MIN_PRESSURE;
> }
>
> error = tps6507x_adc_standby(tsc);
> if (error)
> - goto err2;
> + goto err_free_polled_dev;
>
> - error = input_register_device(input_dev);
> + error = input_register_polled_device(poll_dev);
> if (error)
> - goto err2;
> -
> - schd = schedule_delayed_work(&tsc->work,
> - msecs_to_jiffies(tsc->poll_period));
> + goto err_free_polled_dev;
>
> - if (!schd) {
> - dev_err(tsc->dev, "schedule failed");
> - goto err2;
> - }
> - platform_set_drvdata(pdev, tps6507x_dev);
> + platform_set_drvdata(pdev, tsc);
>
> return 0;
>
> -err2:
> - cancel_delayed_work_sync(&tsc->work);
> - input_free_device(input_dev);
> -err1:
> +err_free_polled_dev:
> + input_free_polled_device(poll_dev);
> +err_free_mem:
> kfree(tsc);
> - tps6507x_dev->ts = NULL;
> -err0:
> return error;
> }
>
> static int tps6507x_ts_remove(struct platform_device *pdev)
> {
> - struct tps6507x_dev *tps6507x_dev = platform_get_drvdata(pdev);
> - struct tps6507x_ts *tsc = tps6507x_dev->ts;
> - struct input_dev *input_dev = tsc->input_dev;
> -
> - cancel_delayed_work_sync(&tsc->work);
> + struct tps6507x_ts *tsc = platform_get_drvdata(pdev);
> + struct input_polled_dev *poll_dev = tsc->poll_dev;
>
> - input_unregister_device(input_dev);
> + input_unregister_polled_device(poll_dev);
> + input_free_polled_device(poll_dev);
>
> - tps6507x_dev->ts = NULL;
> kfree(tsc);
>
> return 0;
> diff --git a/include/linux/mfd/tps6507x.h b/include/linux/mfd/tps6507x.h
> index c923e48..c2ae569 100644
> --- a/include/linux/mfd/tps6507x.h
> +++ b/include/linux/mfd/tps6507x.h
> @@ -163,7 +163,6 @@ struct tps6507x_dev {
>
> /* Client devices */
> struct tps6507x_pmic *pmic;
> - struct tps6507x_ts *ts;
> };
>
> #endif /* __LINUX_MFD_TPS6507X_H */
> --
> 1.8.1.4
>
>
Thanks,
Manish
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