static int __init ft5x0x_ts_init(void)
gpio_direction_output(exynos4_gpl0(2), 1);
s3c_gpio_cfgpin(exynos4_gpl0(2), s3c_gpio_output);
gpio_free(exynos4_gpl0(2));
mdelay(5);
#endif
#if1
printk("==%s: reset==\n", __function__);//啟動的時候復位觸控晶元
ret = gpio_request(exynos4_gpx0(3), "gpx0_3");
if (ret)
}gpio_direction_output(exynos4_gpx0(3), 0);//復位引腳拉低再拉高
mdelay(200);
gpio_direction_output(exynos4_gpx0(3), 1);
s3c_gpio_cfgpin(exynos4_gpx0(3), s3c_gpio_output);
gpio_free(exynos4_gpx0(3));
msleep(300);
......
......
......
......
....
return i2c_add_driver(&ft5x0x_ts_driver);
}
static int ft5x0x_ts_probe(struct i2c_client *client, const struct i2c_device_id *id)
if (!i2c_check_functionality(client->adapter, i2c_func_i2c))
ts = kzalloc(sizeof(*ts), gfp_kernel);
if (!ts)
pdata = client->dev.platform_data;
if (!pdata)
ts->screen_max_x = pdata->screen_max_x;
ts->screen_max_y = pdata->screen_max_y;
ts->pressure_max = pdata->pressure_max;
ts->gpio_irq = pdata->gpio_irq;
if (ts->gpio_irq !=
-einval) else
if (pdata->irq_cfg)
ts->gpio_wakeup = pdata->gpio_wakeup;
ts->gpio_reset = pdata->gpio_reset;
init_work(&ts->work, ft5x0x_ts_pen_irq_work);//註冊中斷處理佇列程式，用於中斷後段處理：ft5x0x_ts_pen_irq_work
this_client = client;
i2c_set_clientdata(client, ts);
/*建立工作佇列執行緒，用於檢測觸控訊號*/
ts->
queue
= create_singlethread_workqueue(dev_name(&client->dev));
if (!ts->
queue)
/*分配輸入裝置*/
input_dev = input_allocate_device();
if (!input_dev)
ts->input_dev = input_dev;
/*設定輸入裝置模式*/
set_bit(ev_syn, input_dev->evbit);
set_bit(ev_abs, input_dev->evbit);
set_bit(ev_key, input_dev->evbit);
#ifdef config_ft5x0x_multitouch
set_bit(abs_mt_tracking_id, input_dev->absbit);
set_bit(abs_mt_touch_major, input_dev->absbit);
set_bit(abs_mt_width_major, input_dev->absbit);
set_bit(abs_mt_position_x, input_dev->absbit);
set_bit(abs_mt_position_y, input_dev->absbit);
/*繫結輸入裝置引數*/
input_set_abs_params(input_dev, abs_mt_position_x, 0, ts->screen_max_x, 0, 0);
input_set_abs_params(input_dev, abs_mt_position_y, 0, ts->screen_max_y, 0, 0);
input_set_abs_params(input_dev, abs_mt_touch_major, 0, ts->pressure_max, 0, 0);
input_set_abs_params(input_dev, abs_mt_width_major, 0, 200, 0, 0);
input_set_abs_params(input_dev, abs_mt_tracking_id, 0, ft5x0x_pt_max, 0, 0);
#else
set_bit(abs_x, input_dev->absbit);
set_bit(abs_y, input_dev->absbit);
set_bit(abs_pressure, input_dev->absbit);
set_bit(btn_touch, input_dev->keybit);
input_set_abs_params(input_dev, abs_x, 0, ts->screen_max_x, 0, 0);
input_set_abs_params(input_dev, abs_y, 0, ts->screen_max_y, 0, 0);
input_set_abs_params(input_dev, abs_pressure, 0, ts->pressure_max, 0 , 0);
#endif
input_dev->name = ft5x0x_name;
input_dev->id.bustype = bus_i2c;
input_dev->id.vendor =
0x12fa;
input_dev->id.product =
0x2143;
input_dev->id.version =
0x0100;
/*註冊輸入裝置*/
err = input_register_device(input_dev);
if (err)
msleep(3);
err = ft5x0x_read_fw_ver(&val);
if (err <
0) /*申請i2c的中斷資源*/
err = request_irq(client->irq, ft5x0x_ts_interrupt,
irq_type_edge_falling /*irqf_trigger_falling*/, "ft5x0x_ts", ts);
if (err <
0) disable_irq(client->irq);
dev_info(&client->dev, "firmware version 0x%02x\n", val);//讀取觸控晶元的韌體版本號
#ifdef config_has_earlysuspend
ts->early_suspend.level = early_suspend_level_blank_screen;//early_suspend_level_disable_fb + 1;
ts->early_suspend.suspend = ft5x0x_ts_suspend;
ts->early_suspend.resume = ft5x0x_ts_resume;
register_early_suspend(&ts->early_suspend);
#endif
enable_irq(client->irq);
//cym 4412_set_ctp(ctp_ft5x06);
dev_info(&client->dev, "focaltech ft5x0x touchscreen initialized\n");
return
0;exit_irq_request_failed:
input_unregister_device(input_dev);
exit_input_dev_alloc_failed:
cancel_work_sync(&ts->work);
destroy_workqueue(ts->
queue);
exit_create_singlethread:
i2c_set_clientdata(client, null);
exit_no_pdata:
kfree(ts);
exit_alloc_data_failed:
exit_check_functionality_failed:
dev_err(&client->dev, "probe ft5x0x touchscreen failed, %d\n", err);
return err;
}
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