[android-porting] Re: touchscreen tsc2102 on I.mx27

[xro]

I tried the patch and it's not better...

should i modify the driver tsc2102_ts.c and compile my kernel again?

that's my driver:


#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/input.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/kbd_kern.h>

#include <linux/spi/tsc2102.h>

#define DRIVER_NAME "TSC210x Touchscreen"

struct input_dev *dev;

static void tsc210x_touch(int touching)
{
        if (!touching) {
                input_report_abs(dev, ABS_X, 0);
                input_report_abs(dev, ABS_Y, 0);
                input_report_abs(dev, ABS_PRESSURE, 0);
                input_sync(dev);
        }

        input_report_key(dev, BTN_TOUCH, touching);


        //do_poke_blanked_console = 1;
}

static void tsc210x_coords(int x, int y, int z1, int z2)
{
        int p;

        /* Calculate the touch resistance a la equation #1 */
        if (z1 != 0)
                p = x * (z2 - z1) / (z1 << 4);
        else
                p = 1;

        input_report_abs(dev, ABS_X, x);
        input_report_abs(dev, ABS_Y, y);
        input_report_abs(dev, ABS_PRESSURE, p);
        input_sync(dev);
}

static int tsc210x_ts_probe(struct platform_device *pdev)
{
        int status;

        dev = input_allocate_device();
        if (!dev)
                return -ENOMEM;

        status = tsc210x_touch_cb(tsc210x_touch);
        if (status) {
                goto error;
        }

        status = tsc210x_coords_cb(tsc210x_coords);
        if (status) {
                goto error;
        }

        dev->name = DRIVER_NAME;
        dev->dev.parent = &pdev->dev;
        dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
        dev->keybit[BIT_WORD(BTN_TOUCH)] |= BIT_MASK(BTN_TOUCH);
        dev->absbit[0] = BIT_MASK(ABS_X) | BIT_MASK(ABS_Y) | BIT_MASK
(ABS_PRESSURE);
        status = input_register_device(dev);
        if (status) {
                printk(KERN_INFO "Unable to register TSC210x as input device 
!\n");
                goto error;
        }

        printk(DRIVER_NAME " driver initialized\n");
        return 0;

error:
        input_free_device(dev);
        return status;
}

static int tsc210x_ts_remove(struct platform_device *pdev)
{
        tsc210x_touch_cb(0);
        tsc210x_coords_cb(0);
        input_unregister_device(dev);
        return 0;
}

static int
tsc210x_ts_suspend(struct platform_device *pdev, pm_message_t state)
{
        /* Nothing yet */
        return 0;
}

static int tsc210x_ts_resume(struct platform_device *pdev)
{
        /* Nothing either */
        return 0;
}

static struct platform_driver tsc210x_ts_driver = {
        .probe          = tsc210x_ts_probe,
        .remove         = tsc210x_ts_remove,
        .suspend        = tsc210x_ts_suspend,
        .resume         = tsc210x_ts_resume,
        .driver         = {
                .name   = "tsc210x-ts",
        },
};

static int __init tsc210x_ts_init(void)
{
        int ret;

        ret = platform_driver_register(&tsc210x_ts_driver);
        if (ret)
                return -ENODEV;

        return 0;
}

static void __exit tsc210x_ts_exit(void)
{
        platform_driver_unregister(&tsc210x_ts_driver);
}

module_init(tsc210x_ts_init);
module_exit(tsc210x_ts_exit);

MODULE_AUTHOR("Andrzej Zaborowski");
MODULE_DESCRIPTION("Touchscreen input driver for TI TSC210x.");
MODULE_LICENSE("GPL");
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