drivers/input/touchscreen/ct36x_ts/allwinner.c

   1
   2 #include <linux/i2c.h>
   3
   4 #include "tscore.h"
   5 //#include "generic.h"
   6
   7
   8
   9 static struct i2c_device_id ct36x_ts_id[] = {
  10         { DRIVER_NAME, 0 },
  11         { }
  12 };
  13
  14 static struct i2c_board_info i2c_board_info[] = {
  15         {
  16                 I2C_BOARD_INFO(DRIVER_NAME, 0x01),
  17                 .platform_data = NULL,
  18         },
  19 };
  20
  21 struct i2c_driver ct36x_ts_driver  = {
  22         .driver = {
  23                 .owner  = THIS_MODULE,
  24                 .name   = DRIVER_NAME
  25         },
  26         .id_table       = ct36x_ts_id,
  27         .probe      = ct36x_ts_probe,
  28         .suspend        = ct36x_ts_suspend,
  29         .resume     = ct36x_ts_resume,
  30         .remove         = __devexit_p(ct36x_ts_remove),
  31 };
  32
  33 void ct36x_platform_get_cfg(struct ct36x_ts_info *ct36x_ts)
  34 {
  35         /* I2C config */
  36         ct36x_ts->i2c_bus = CT36X_TS_I2C_BUS;
  37         ct36x_ts->i2c_address = CT36X_TS_I2C_ADDRESS;
  38
  39         /* GPIO config */
  40         ct36x_ts->rst = CT36X_TS_RST_PIN;
  41         ct36x_ts->ss = CT36X_TS_IRQ_PIN;
  42
  43         /* IRQ config*/
  44         ct36x_ts->irq = gpio_to_irq(ct36x_ts->ss);
  45
  46         ct36x_ts->ready = 0;
  47 }
  48
  49 int ct36x_platform_set_dev(struct ct36x_ts_info *ct36x_ts)
  50 {
  51         struct i2c_adapter *adapter;
  52         struct i2c_client *client;
  53
  54         adapter = i2c_get_adapter(ct36x_ts->i2c_bus);
  55         if ( !adapter ) {
  56                 printk("Unable to get i2c adapter on bus %d.\n", ct36x_ts->i2c_bus);
  57                 return -ENODEV;
  58         }
  59
  60         client = i2c_new_device(adapter, i2c_board_info);
  61         i2c_put_adapter(adapter);
  62         if (!client) {
  63                 printk("Unable to create i2c device on bus %d.\n", ct36x_ts->i2c_bus);
  64                 return -ENODEV;
  65         }
  66
  67         ct36x_ts->client = client;
  68         i2c_set_clientdata(client, ct36x_ts);
  69
  70         return 0;
  71 }
  72
  73 int ct36x_platform_get_resource(struct ct36x_ts_info *ct36x_ts)
  74 {
  75         int err = -1;
  76
  77         // Init Reset pin
  78         err = gpio_request(ct36x_ts->rst, "ct36x_ts_rst");
  79         if ( err ) {
  80                 return -EIO;
  81         }
  82         gpio_direction_output(ct36x_ts->rst, 1);
  83         gpio_set_value(ct36x_ts->rst, 1);
  84
  85         // Init Int pin
  86         err = gpio_request(ct36x_ts->ss, "ct36x_ts_int");
  87         if ( err ) {
  88                 return -EIO;
  89         }
  90         gpio_direction_input(ct36x_ts->ss);
  91
  92         return 0;
  93 }
  94
  95 void ct36x_platform_put_resource(struct ct36x_ts_info *ct36x_ts)
  96 {
  97         gpio_free(ct36x_ts->rst);
  98         gpio_free(ct36x_ts->ss);
  99 }