diff options
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/video/tcm825x.c | 128 | ||||
| -rw-r--r-- | drivers/media/video/tcm825x.h | 4 |
2 files changed, 61 insertions, 71 deletions
diff --git a/drivers/media/video/tcm825x.c b/drivers/media/video/tcm825x.c index 3a139f288a9..41cd6a0b048 100644 --- a/drivers/media/video/tcm825x.c +++ b/drivers/media/video/tcm825x.c @@ -470,46 +470,6 @@ static int tcm825x_configure(struct v4l2_int_device *s) return 0; } -/* - * Given the image capture format in pix, the nominal frame period in - * timeperframe, calculate the required xclk frequency. - * - * TCM825X input frequency characteristics are: - * Minimum 11.9 MHz, Typical 24.57 MHz and maximum 25/27 MHz - */ -#define XCLK_MIN 11900000 -#define XCLK_MAX 25000000 - -static int ioctl_g_ext_clk(struct v4l2_int_device *s, u32 *xclk) -{ - struct tcm825x_sensor *sensor = s->priv; - struct v4l2_fract *timeperframe = &sensor->timeperframe; - u32 tgt_xclk; /* target xclk */ - u32 tgt_fps; /* target frames per secound */ - - tgt_fps = timeperframe->denominator / timeperframe->numerator; - - tgt_xclk = (tgt_fps <= HIGH_FPS_MODE_LOWER_LIMIT) ? - (2457 * tgt_fps) / MAX_HALF_FPS : - (2457 * tgt_fps) / MAX_FPS; - tgt_xclk *= 10000; - - tgt_xclk = min(tgt_xclk, (u32)XCLK_MAX); - tgt_xclk = max(tgt_xclk, (u32)XCLK_MIN); - - *xclk = tgt_xclk; - - return 0; -} - -static int ioctl_s_ext_clk(struct v4l2_int_device *s, u32 xclk) -{ - if (xclk > XCLK_MAX || xclk < XCLK_MIN) - return -EINVAL; - - return 0; -} - static int ioctl_queryctrl(struct v4l2_int_device *s, struct v4l2_queryctrl *qc) { @@ -756,6 +716,41 @@ static int ioctl_s_power(struct v4l2_int_device *s, int on) return sensor->platform_data->power_set(on); } +/* + * Given the image capture format in pix, the nominal frame period in + * timeperframe, calculate the required xclk frequency. + * + * TCM825X input frequency characteristics are: + * Minimum 11.9 MHz, Typical 24.57 MHz and maximum 25/27 MHz + */ + +static int ioctl_g_ifparm(struct v4l2_int_device *s, struct v4l2_ifparm *p) +{ + struct tcm825x_sensor *sensor = s->priv; + struct v4l2_fract *timeperframe = &sensor->timeperframe; + u32 tgt_xclk; /* target xclk */ + u32 tgt_fps; /* target frames per secound */ + int rval; + + rval = sensor->platform_data->ifparm(p); + if (rval) + return rval; + + tgt_fps = timeperframe->denominator / timeperframe->numerator; + + tgt_xclk = (tgt_fps <= HIGH_FPS_MODE_LOWER_LIMIT) ? + (2457 * tgt_fps) / MAX_HALF_FPS : + (2457 * tgt_fps) / MAX_FPS; + tgt_xclk *= 10000; + + tgt_xclk = min(tgt_xclk, (u32)TCM825X_XCLK_MAX); + tgt_xclk = max(tgt_xclk, (u32)TCM825X_XCLK_MIN); + + p->u.bt656.clock_curr = tgt_xclk; + + return 0; +} + static int ioctl_g_needs_reset(struct v4l2_int_device *s, void *buf) { struct tcm825x_sensor *sensor = s->priv; @@ -793,43 +788,39 @@ static int ioctl_dev_init(struct v4l2_int_device *s) return 0; } -#define NUM_IOCTLS 17 - -static struct v4l2_int_ioctl_desc tcm825x_ioctl_desc[NUM_IOCTLS] = { +static struct v4l2_int_ioctl_desc tcm825x_ioctl_desc[] = { { vidioc_int_dev_init_num, - (v4l2_int_ioctl_func *)&ioctl_dev_init }, + (v4l2_int_ioctl_func *)ioctl_dev_init }, { vidioc_int_dev_exit_num, - (v4l2_int_ioctl_func *)&ioctl_dev_exit }, + (v4l2_int_ioctl_func *)ioctl_dev_exit }, { vidioc_int_s_power_num, - (v4l2_int_ioctl_func *)&ioctl_s_power }, - { vidioc_int_g_ext_clk_num, - (v4l2_int_ioctl_func *)&ioctl_g_ext_clk }, - { vidioc_int_s_ext_clk_num, - (v4l2_int_ioctl_func *)&ioctl_s_ext_clk }, + (v4l2_int_ioctl_func *)ioctl_s_power }, + { vidioc_int_g_ifparm_num, + (v4l2_int_ioctl_func *)ioctl_g_ifparm }, { vidioc_int_g_needs_reset_num, - (v4l2_int_ioctl_func *)&ioctl_g_needs_reset }, + (v4l2_int_ioctl_func *)ioctl_g_needs_reset }, { vidioc_int_reset_num, - (v4l2_int_ioctl_func *)&ioctl_reset }, + (v4l2_int_ioctl_func *)ioctl_reset }, { vidioc_int_init_num, - (v4l2_int_ioctl_func *)&ioctl_init }, + (v4l2_int_ioctl_func *)ioctl_init }, { vidioc_int_enum_fmt_cap_num, - (v4l2_int_ioctl_func *)&ioctl_enum_fmt_cap }, + (v4l2_int_ioctl_func *)ioctl_enum_fmt_cap }, { vidioc_int_try_fmt_cap_num, - (v4l2_int_ioctl_func *)&ioctl_try_fmt_cap }, + (v4l2_int_ioctl_func *)ioctl_try_fmt_cap }, { vidioc_int_g_fmt_cap_num, - (v4l2_int_ioctl_func *)&ioctl_g_fmt_cap }, + (v4l2_int_ioctl_func *)ioctl_g_fmt_cap }, { vidioc_int_s_fmt_cap_num, - (v4l2_int_ioctl_func *)&ioctl_s_fmt_cap }, + (v4l2_int_ioctl_func *)ioctl_s_fmt_cap }, { vidioc_int_g_parm_num, - (v4l2_int_ioctl_func *)&ioctl_g_parm }, + (v4l2_int_ioctl_func *)ioctl_g_parm }, { vidioc_int_s_parm_num, - (v4l2_int_ioctl_func *)&ioctl_s_parm }, + (v4l2_int_ioctl_func *)ioctl_s_parm }, { vidioc_int_queryctrl_num, - (v4l2_int_ioctl_func *)&ioctl_queryctrl }, + (v4l2_int_ioctl_func *)ioctl_queryctrl }, { vidioc_int_g_ctrl_num, - (v4l2_int_ioctl_func *)&ioctl_g_ctrl }, + (v4l2_int_ioctl_func *)ioctl_g_ctrl }, { vidioc_int_s_ctrl_num, - (v4l2_int_ioctl_func *)&ioctl_s_ctrl }, + (v4l2_int_ioctl_func *)ioctl_s_ctrl }, }; static struct v4l2_int_slave tcm825x_slave = { @@ -894,16 +885,16 @@ static int __exit tcm825x_remove(struct i2c_client *client) } static struct i2c_driver tcm825x_i2c_driver = { - .driver = { + .driver = { .name = TCM825X_NAME, }, - .probe = &tcm825x_probe, - .remove = __exit_p(&tcm825x_remove), + .probe = tcm825x_probe, + .remove = __exit_p(tcm825x_remove), }; static struct tcm825x_sensor tcm825x = { .timeperframe = { - .numerator = 1, + .numerator = 1, .denominator = DEFAULT_FPS, }, }; @@ -911,11 +902,6 @@ static struct tcm825x_sensor tcm825x = { static int __init tcm825x_init(void) { int rval; - int i = 0; - - /* Just an experiment --- don't use *_cb functions yet. */ - tcm825x_ioctl_desc[i++] = vidioc_int_dev_init_cb(&ioctl_dev_init); - BUG_ON(i >= NUM_IOCTLS); rval = i2c_add_driver(&tcm825x_i2c_driver); if (rval) diff --git a/drivers/media/video/tcm825x.h b/drivers/media/video/tcm825x.h index d6471ec40bc..966765b66b3 100644 --- a/drivers/media/video/tcm825x.h +++ b/drivers/media/video/tcm825x.h @@ -163,6 +163,9 @@ enum pixel_format { YUV422 = 0, RGB565 }; #define NUM_IMAGE_SIZES 6 #define NUM_PIXEL_FORMATS 2 +#define TCM825X_XCLK_MIN 11900000 +#define TCM825X_XCLK_MAX 25000000 + struct capture_size { unsigned long width; unsigned long height; @@ -178,6 +181,7 @@ struct tcm825x_platform_data { const struct tcm825x_reg *(*default_regs)(void); int (*needs_reset)(struct v4l2_int_device *s, void *buf, struct v4l2_pix_format *fmt); + int (*ifparm)(struct v4l2_ifparm *p); }; /* Array of image sizes supported by TCM825X. These must be ordered from |