recipes-bsp/linux/linux-omap-psp-2.6.32/cam/0058-mt9t112-Do-init_camera-every-powerup.patch

   1 From 52bfcc9b6bcb30cf81589c483f1344c568be7300 Mon Sep 17 00:00:00 2001
   2 From: Sergio Aguirre <saaguirre@ti.com>
   3 Date: Thu, 15 Jul 2010 17:53:44 -0500
   4 Subject: [PATCH 58/75] mt9t112: Do init_camera every powerup
   5
   6 This is because we want to ensure we always come from a known state.
   7
   8 Probably this could be revisited later for optimization.
   9
  10 Signed-off-by: Sergio Aguirre <saaguirre@ti.com>
  11 ---
  12  drivers/media/video/mt9t112.c |   17 ++++++++---------
  13  1 files changed, 8 insertions(+), 9 deletions(-)
  14
  15 diff --git a/drivers/media/video/mt9t112.c b/drivers/media/video/mt9t112.c
  16 index 98a4ea9..eebc2b5 100644
  17 --- a/drivers/media/video/mt9t112.c
  18 +++ b/drivers/media/video/mt9t112.c
  19 @@ -982,6 +982,8 @@ static int mt9t112_v4l2_int_s_power(struct v4l2_int_device *s,
  20  {
  21         struct mt9t112_priv *priv = s->priv;
  22         struct i2c_client *client = priv->client;
  23 +       u16 param = (MT9T112_FLAG_PCLK_RISING_EDGE &
  24 +                    priv->info.flags) ? 0x0001 : 0x0000;
  25         int ret;
  26
  27         switch (power) {
  28 @@ -1014,20 +1016,17 @@ static int mt9t112_v4l2_int_s_power(struct v4l2_int_device *s,
  29                         return ret;
  30                 }
  31                 if (!(priv->flags & INIT_DONE)) {
  32 -                       u16 param = (MT9T112_FLAG_PCLK_RISING_EDGE &
  33 -                                    priv->info.flags) ? 0x0001 : 0x0000;
  34 -
  35                         ECHECKER(ret, mt9t112_detect(client));
  36 -                       ECHECKER(ret, mt9t112_init_camera(client));
  37 -
  38 -                       /* Invert PCLK (Data sampled on falling edge of pixclk) */
  39 -                       mt9t112_reg_write(ret, client, 0x3C20, param);
  40 -
  41 -                       mdelay(5);
  42
  43                         priv->flags |= INIT_DONE;
  44                 }
  45
  46 +               ECHECKER(ret, mt9t112_init_camera(client));
  47 +
  48 +               /* Invert PCLK (Data sampled on falling edge of pixclk) */
  49 +               mt9t112_reg_write(ret, client, 0x3C20, param);
  50 +
  51 +               mdelay(5);
  52                 mt9t112_mcu_write(ret, client, VAR(26, 7),
  53                                   mt9t112_pixfmt_to_fmt(priv->pix.pixelformat));
  54                 mt9t112_mcu_write(ret, client, VAR(26, 9),
  55 --
  56 1.6.6.1
  57