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[media] media: ov13858: Calculate pixel-rate at runtime, use mode

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Calculate pixel-rate at run time instead of compile time.

Instead of using hardcoded pixels-per-line, extract it from current sensor
mode.

Signed-off-by: Chiranjeevi Rapolu <chiranjeevi.rapolu@intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Chiranjeevi Rapolu 2017-09-18 17:43:40 -03:00 committed by Mauro Carvalho Chehab
parent 91c158dd26
commit 6f2a0594ae
1 changed files with 29 additions and 20 deletions
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49
drivers/media/i2c/ov13858.c
View file

@ -104,7 +104,6 @@ struct ov13858_reg_list {
/* Link frequency config */
struct ov13858_link_freq_config {
u32 pixel_rate;
u32 pixels_per_line;
/* PLL registers for this link frequency */
@ -948,6 +947,12 @@ static const char * const ov13858_test_pattern_menu[] = {
#define OV13858_LINK_FREQ_INDEX_0 0
#define OV13858_LINK_FREQ_INDEX_1 1
/*
* pixel_rate = link_freq * data-rate * nr_of_lanes / bits_per_sample
* data rate => double data rate; number of lanes => 4; bits per pixel => 10
*/
#define LINK_FREQ_TO_PIXEL_RATE(f) (((f) * 2 * 4) / 10)
/* Menu items for LINK_FREQ V4L2 control */
static const s64 link_freq_menu_items[OV13858_NUM_OF_LINK_FREQS] = {
OV13858_LINK_FREQ_540MHZ,
@ -958,8 +963,6 @@ static const s64 link_freq_menu_items[OV13858_NUM_OF_LINK_FREQS] = {
static const struct ov13858_link_freq_config
link_freq_configs[OV13858_NUM_OF_LINK_FREQS] = {
{
/* pixel_rate = link_freq * 2 * nr_of_lanes / bits_per_sample */
.pixel_rate = (OV13858_LINK_FREQ_540MHZ * 2 * 4) / 10,
.pixels_per_line = OV13858_PPL_540MHZ,
.reg_list = {
.num_of_regs = ARRAY_SIZE(mipi_data_rate_1080mbps),
@ -967,8 +970,6 @@ static const struct ov13858_link_freq_config
}
},
{
/* pixel_rate = link_freq * 2 * nr_of_lanes / bits_per_sample */
.pixel_rate = (OV13858_LINK_FREQ_270MHZ * 2 * 4) / 10,
.pixels_per_line = OV13858_PPL_270MHZ,
.reg_list = {
.num_of_regs = ARRAY_SIZE(mipi_data_rate_540mbps),
@ -1385,6 +1386,8 @@ ov13858_set_pad_format(struct v4l2_subdev *sd,
s32 vblank_def;
s32 vblank_min;
s64 h_blank;
s64 pixel_rate;
s64 link_freq;
mutex_lock(&ov13858->mutex);
@ -1400,9 +1403,10 @@ ov13858_set_pad_format(struct v4l2_subdev *sd,
} else {
ov13858->cur_mode = mode;
__v4l2_ctrl_s_ctrl(ov13858->link_freq, mode->link_freq_index);
__v4l2_ctrl_s_ctrl_int64(
ov13858->pixel_rate,
link_freq_configs[mode->link_freq_index].pixel_rate);
link_freq = link_freq_menu_items[mode->link_freq_index];
pixel_rate = LINK_FREQ_TO_PIXEL_RATE(link_freq);
__v4l2_ctrl_s_ctrl_int64(ov13858->pixel_rate, pixel_rate);
/* Update limits and set FPS to default */
vblank_def = ov13858->cur_mode->vts_def -
ov13858->cur_mode->height;
@ -1617,6 +1621,10 @@ static int ov13858_init_controls(struct ov13858 *ov13858)
s64 exposure_max;
s64 vblank_def;
s64 vblank_min;
s64 hblank;
s64 pixel_rate_min;
s64 pixel_rate_max;
const struct ov13858_mode *mode;
int ret;
ctrl_hdlr = &ov13858->ctrl_handler;
@ -1634,29 +1642,30 @@ static int ov13858_init_controls(struct ov13858 *ov13858)
link_freq_menu_items);
ov13858->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
pixel_rate_max = LINK_FREQ_TO_PIXEL_RATE(link_freq_menu_items[0]);
pixel_rate_min = LINK_FREQ_TO_PIXEL_RATE(link_freq_menu_items[1]);
/* By default, PIXEL_RATE is read only */
ov13858->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &ov13858_ctrl_ops,
V4L2_CID_PIXEL_RATE, 0,
link_freq_configs[0].pixel_rate, 1,
link_freq_configs[0].pixel_rate);
V4L2_CID_PIXEL_RATE,
pixel_rate_min, pixel_rate_max,
1, pixel_rate_max);
vblank_def = ov13858->cur_mode->vts_def - ov13858->cur_mode->height;
vblank_min = ov13858->cur_mode->vts_min - ov13858->cur_mode->height;
mode = ov13858->cur_mode;
vblank_def = mode->vts_def - mode->height;
vblank_min = mode->vts_min - mode->height;
ov13858->vblank = v4l2_ctrl_new_std(
ctrl_hdlr, &ov13858_ctrl_ops, V4L2_CID_VBLANK,
vblank_min,
OV13858_VTS_MAX - ov13858->cur_mode->height, 1,
vblank_min, OV13858_VTS_MAX - mode->height, 1,
vblank_def);
hblank = link_freq_configs[mode->link_freq_index].pixels_per_line -
mode->width;
ov13858->hblank = v4l2_ctrl_new_std(
ctrl_hdlr, &ov13858_ctrl_ops, V4L2_CID_HBLANK,
OV13858_PPL_540MHZ - ov13858->cur_mode->width,
OV13858_PPL_540MHZ - ov13858->cur_mode->width,
1,
OV13858_PPL_540MHZ - ov13858->cur_mode->width);
hblank, hblank, 1, hblank);
ov13858->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
exposure_max = ov13858->cur_mode->vts_def - 8;
exposure_max = mode->vts_def - 8;
ov13858->exposure = v4l2_ctrl_new_std(
ctrl_hdlr, &ov13858_ctrl_ops,
V4L2_CID_EXPOSURE, OV13858_EXPOSURE_MIN,