src/patches/kernel/omap/beagle/0003-tlc59108-adjust-for-beagleboard-uLCD7.patch

   1 From 40cbddde06a9f0e1845810b904502f922fc3288f Mon Sep 17 00:00:00 2001
   2 From: Koen Kooi <koen@dominion.thruhere.net>
   3 Date: Fri, 27 Apr 2012 21:30:00 +0200
   4 Subject: [PATCH 3/5] tlc59108: adjust for beagleboard+uLCD7
   5
   6 Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>
   7 ---
   8  drivers/video/backlight/tlc59108.c |   46 ++++++++++++++++++++++++-----------
   9  1 files changed, 31 insertions(+), 15 deletions(-)
  10
  11 diff --git a/drivers/video/backlight/tlc59108.c b/drivers/video/backlight/tlc59108.c
  12 index 4f4ea34..40a21e7 100644
  13 --- a/drivers/video/backlight/tlc59108.c
  14 +++ b/drivers/video/backlight/tlc59108.c
  15 @@ -29,9 +29,16 @@
  16  #include <linux/backlight.h>
  17  #include <linux/fb.h>
  18
  19 -#define tlc59108_MODULE_NAME   "tlc59108"
  20  #define TLC59108_MODE1   0x00
  21 -#define TLC59108_PWM2    0x04
  22 +#define TLC59108_MODE2   0x01
  23 +#define TLC59108_PWM0 0x02
  24 +#define TLC59108_PWM1 0x03
  25 +#define TLC59108_PWM2 0x04
  26 +#define TLC59108_PWM3 0x05
  27 +#define TLC59108_PWM4 0x06
  28 +#define TLC59108_PWM5 0x07
  29 +#define TLC59108_PWM6 0x08
  30 +#define TLC59108_PWM7 0x09
  31  #define TLC59108_LEDOUT0 0x0c
  32  #define TLC59108_LEDOUT1 0x0d
  33  #define TLC59108_MAX_BRIGHTNESS 0xFF
  34 @@ -43,15 +50,9 @@ struct tlc59108_bl {
  35
  36  static void tlc59108_bl_set_backlight(struct tlc59108_bl *data, int brightness)
  37  {
  38 -       /* Set Mode1 Register */
  39 -       i2c_smbus_write_byte_data(data->client, TLC59108_MODE1, 0x00);
  40 -
  41 -       /* Set LEDOUT0 Register */
  42 -       i2c_smbus_write_byte_data(data->client, TLC59108_LEDOUT0, 0x21);
  43 -
  44         /* Set Backlight Duty Cycle*/
  45         i2c_smbus_write_byte_data(data->client, TLC59108_PWM2,
  46 -                                 brightness & 0xff);
  47 +                                 0xff - brightness );
  48  }
  49
  50  static int tlc59108_bl_get_brightness(struct backlight_device *dev)
  51 @@ -65,8 +66,18 @@ static int tlc59108_bl_update_status(struct backlight_device *dev)
  52  {
  53         struct backlight_properties *props = &dev->props;
  54         struct tlc59108_bl *data = dev_get_drvdata(&dev->dev);
  55 +
  56         int brightness = props->brightness;
  57
  58 +       if (dev->props.state & BL_CORE_FBBLANK) {
  59 +               brightness = 0;
  60 +               /* Set LEDOUT0 Register */
  61 +               i2c_smbus_write_byte_data(data->client, TLC59108_LEDOUT0, 0x10);
  62 +       } else {
  63 +               /* Set LEDOUT0 Register */
  64 +               i2c_smbus_write_byte_data(data->client, TLC59108_LEDOUT0, 0x30);
  65 +       }
  66 +
  67         tlc59108_bl_set_backlight(data, brightness);
  68
  69         return 0;
  70 @@ -77,7 +88,7 @@ static const struct backlight_ops bl_ops = {
  71         .update_status          = tlc59108_bl_update_status,
  72  };
  73
  74 -static int tlc59108_probe(struct i2c_client *c, const struct i2c_device_id *id)
  75 +static int __devinit tlc59108_probe(struct i2c_client *c, const struct i2c_device_id *id)
  76  {
  77         struct backlight_properties props;
  78         struct tlc59108_bl *data = kzalloc(sizeof(struct tlc59108_bl),
  79 @@ -104,6 +115,11 @@ static int tlc59108_probe(struct i2c_client *c, const struct i2c_device_id *id)
  80
  81         backlight_update_status(data->bl);
  82
  83 +       i2c_smbus_write_byte_data(data->client, TLC59108_MODE1, 0x00);
  84 +       i2c_smbus_write_byte_data(data->client, TLC59108_PWM2, 0x80);
  85 +       i2c_smbus_write_byte_data(data->client, TLC59108_LEDOUT1, 0x05);
  86 +       i2c_smbus_write_byte_data(data->client, TLC59108_LEDOUT1, 0x15);
  87 +
  88         return 0;
  89
  90  err_reg:
  91 @@ -125,7 +141,7 @@ static int tlc59108_remove(struct i2c_client *c)
  92  }
  93
  94  /* I2C Device ID table */
  95 -static const struct i2c_device_id tlc59108_id[] = {
  96 +static struct i2c_device_id tlc59108_id[] = {
  97         { "tlc59108", 0 },
  98         { }
  99  };
 100 @@ -134,12 +150,12 @@ MODULE_DEVICE_TABLE(i2c, tlc59108_id);
 101  /* I2C driver data */
 102  static struct i2c_driver tlc59108_driver = {
 103         .driver = {
 104 -               .owner = THIS_MODULE,
 105 -               .name = tlc59108_MODULE_NAME,
 106 +               .owner  = THIS_MODULE,
 107 +               .name   = "tlc59108"
 108         },
 109 +       .id_table = tlc59108_id,
 110         .probe = tlc59108_probe,
 111         .remove = tlc59108_remove,
 112 -       .id_table = tlc59108_id,
 113  };
 114
 115  static int __init tlc59108_init(void)
 116 @@ -157,4 +173,4 @@ module_exit(tlc59108_exit);
 117
 118  MODULE_DESCRIPTION("LCD/Backlight control for TLC59108");
 119  MODULE_AUTHOR("Senthil Natarajan <senthil.n@ti.com>");
 120 -MODULE_LICENSE("GPL v2");
 121 +MODULE_LICENSE("GPL");
 122 --
 123 1.7.7.6
 124