Pandora Sourcecodes - openembedded.git/blob

   1 From 00cd18c8b6bd6b7f6c627d2b1284ca8f98f1fda4 Mon Sep 17 00:00:00 2001
   2 From: Sergio Aguirre <saaguirre@ti.com>
   3 Date: Thu, 15 Jul 2010 23:43:20 -0500
   4 Subject: [PATCH 62/75] omap3beagle: camera: Prepare 24MHz xclk for mt9t112
   5
   6 Adjust calculations of timings based on # of EXTCLK cycles.
   7
   8 Also, set default requested framerate to 30 fps.
   9
  10 Signed-off-by: Sergio Aguirre <saaguirre@ti.com>
  11 ---
  12  arch/arm/mach-omap2/board-omap3beagle-camera.c |   16 ++++++++--------
  13  1 files changed, 8 insertions(+), 8 deletions(-)
  14
  15 diff --git a/arch/arm/mach-omap2/board-omap3beagle-camera.c b/arch/arm/mach-omap2/board-omap3beagle-camera.c
  16 index 75622bf..520e1d8 100644
  17 --- a/arch/arm/mach-omap2/board-omap3beagle-camera.c
  18 +++ b/arch/arm/mach-omap2/board-omap3beagle-camera.c
  19 @@ -264,7 +264,7 @@ static struct omap34xxcam_hw_config mt9t112_hwc = {
  20         .dev_type               = OMAP34XXCAM_SLAVE_SENSOR,
  21         .u.sensor.sensor_isp    = 0,
  22         .u.sensor.capture_mem   = MT9T112_BIGGEST_FRAME_BYTE_SIZE,
  23 -       .u.sensor.ival_default  = { 1, 10 },
  24 +       .u.sensor.ival_default  = { 1, 30 },
  25  };
  26  #endif
  27
  28 @@ -331,24 +331,24 @@ static int mt9t112_power_set(struct v4l2_int_device *s, enum v4l2_power power)
  29                 mdelay(50);
  30
  31                 /* Enable EXTCLK */
  32 -               isp_set_xclk(vdev->cam->isp, MT9T112_CLK_MIN, CAM_USE_XCLKA);
  33 +               isp_set_xclk(vdev->cam->isp, 24000000, CAM_USE_XCLKA);
  34
  35                 /*
  36 -                * Wait at least 70 CLK cycles (w/EXTCLK = 6MHz, or CLK_MIN):
  37 -                * ((1000000 * 70) / 6000000) = aprox 12 us.
  38 +                * Wait at least 70 CLK cycles (w/EXTCLK = 24MHz):
  39 +                * ((1000000 * 70) / 24000000) = aprox 2.91 us.
  40                  */
  41
  42 -               udelay(12);
  43 +               udelay(3);
  44
  45                 /* Set RESET_BAR to 1 */
  46                 gpio_set_value(LEOPARD_RESET_GPIO, 1);
  47
  48                 /*
  49 -                * Wait at least 100 CLK cycles (w/EXTCLK = 6MHz, or CLK_MIN):
  50 -                * ((1000000 * 100) / 6000000) = aprox 17 us.
  51 +                * Wait at least 100 CLK cycles (w/EXTCLK = 24MHz):
  52 +                * ((1000000 * 100) / 24000000) = aprox 4.16 us.
  53                  */
  54
  55 -               udelay(17);
  56 +               udelay(5);
  57
  58                 break;
  59
  60 --
  61 1.6.6.1
  62