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authorChiranjeevi Rapolu <chiranjeevi.rapolu@intel.com>2017-08-18 04:29:38 (GMT)
committerMauro Carvalho Chehab <mchehab@s-opensource.com>2017-08-20 12:35:11 (GMT)
commitaf799a71ea5fa313a391a5904eb7489cff472a29 (patch)
treef06714c1083d67e21091ac5c4a4dc7a9128805d2
parent89871186fea61668ddf0557ef058b450408cd7ae (diff)
media: ov13858: Limit vblank to permissible rangeold/cs_af799a71ea5f
Previously, vblank range given to user was too big, falling outside of permissible range for a given resolution. Sometimes, too low vblank resulted in errors. Now, limit vblank to only permissible range for a given resolution. This change limits lower-bounds of vblank, doesn't affect upper bounds. 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@s-opensource.com>
-rw-r--r--drivers/media/i2c/ov13858.c35
1 files changed, 23 insertions, 12 deletions
diff --git a/drivers/media/i2c/ov13858.c b/drivers/media/i2c/ov13858.c
index 45c0e96..af7af0d 100644
--- a/drivers/media/i2c/ov13858.c
+++ b/drivers/media/i2c/ov13858.c
@@ -57,7 +57,6 @@
#define OV13858_VTS_30FPS 0x0c8e /* 30 fps */
#define OV13858_VTS_60FPS 0x0648 /* 60 fps */
#define OV13858_VTS_MAX 0x7fff
-#define OV13858_VBLANK_MIN 56
/* HBLANK control - read only */
#define OV13858_PPL_270MHZ 2244
@@ -120,7 +119,8 @@ struct ov13858_mode {
u32 height;
/* V-timing */
- u32 vts;
+ u32 vts_def;
+ u32 vts_min;
/* Index of Link frequency config to be used */
u32 link_freq_index;
@@ -982,7 +982,8 @@ static const struct ov13858_mode supported_modes[] = {
{
.width = 4224,
.height = 3136,
- .vts = OV13858_VTS_30FPS,
+ .vts_def = OV13858_VTS_30FPS,
+ .vts_min = OV13858_VTS_30FPS,
.reg_list = {
.num_of_regs = ARRAY_SIZE(mode_4224x3136_regs),
.regs = mode_4224x3136_regs,
@@ -992,7 +993,8 @@ static const struct ov13858_mode supported_modes[] = {
{
.width = 2112,
.height = 1568,
- .vts = OV13858_VTS_30FPS,
+ .vts_def = OV13858_VTS_30FPS,
+ .vts_min = 1608,
.reg_list = {
.num_of_regs = ARRAY_SIZE(mode_2112x1568_regs),
.regs = mode_2112x1568_regs,
@@ -1002,7 +1004,8 @@ static const struct ov13858_mode supported_modes[] = {
{
.width = 2112,
.height = 1188,
- .vts = OV13858_VTS_30FPS,
+ .vts_def = OV13858_VTS_30FPS,
+ .vts_min = 1608,
.reg_list = {
.num_of_regs = ARRAY_SIZE(mode_2112x1188_regs),
.regs = mode_2112x1188_regs,
@@ -1012,7 +1015,8 @@ static const struct ov13858_mode supported_modes[] = {
{
.width = 1056,
.height = 784,
- .vts = OV13858_VTS_30FPS,
+ .vts_def = OV13858_VTS_30FPS,
+ .vts_min = 804,
.reg_list = {
.num_of_regs = ARRAY_SIZE(mode_1056x784_regs),
.regs = mode_1056x784_regs,
@@ -1379,6 +1383,7 @@ ov13858_set_pad_format(struct v4l2_subdev *sd,
const struct ov13858_mode *mode;
struct v4l2_mbus_framefmt *framefmt;
s32 vblank_def;
+ s32 vblank_min;
s64 h_blank;
mutex_lock(&ov13858->mutex);
@@ -1399,9 +1404,12 @@ ov13858_set_pad_format(struct v4l2_subdev *sd,
ov13858->pixel_rate,
link_freq_configs[mode->link_freq_index].pixel_rate);
/* Update limits and set FPS to default */
- vblank_def = ov13858->cur_mode->vts - ov13858->cur_mode->height;
+ vblank_def = ov13858->cur_mode->vts_def -
+ ov13858->cur_mode->height;
+ vblank_min = ov13858->cur_mode->vts_min -
+ ov13858->cur_mode->height;
__v4l2_ctrl_modify_range(
- ov13858->vblank, OV13858_VBLANK_MIN,
+ ov13858->vblank, vblank_min,
OV13858_VTS_MAX - ov13858->cur_mode->height, 1,
vblank_def);
__v4l2_ctrl_s_ctrl(ov13858->vblank, vblank_def);
@@ -1607,6 +1615,8 @@ static int ov13858_init_controls(struct ov13858 *ov13858)
struct i2c_client *client = v4l2_get_subdevdata(&ov13858->sd);
struct v4l2_ctrl_handler *ctrl_hdlr;
s64 exposure_max;
+ s64 vblank_def;
+ s64 vblank_min;
int ret;
ctrl_hdlr = &ov13858->ctrl_handler;
@@ -1630,12 +1640,13 @@ static int ov13858_init_controls(struct ov13858 *ov13858)
link_freq_configs[0].pixel_rate, 1,
link_freq_configs[0].pixel_rate);
+ vblank_def = ov13858->cur_mode->vts_def - ov13858->cur_mode->height;
+ vblank_min = ov13858->cur_mode->vts_min - ov13858->cur_mode->height;
ov13858->vblank = v4l2_ctrl_new_std(
ctrl_hdlr, &ov13858_ctrl_ops, V4L2_CID_VBLANK,
- OV13858_VBLANK_MIN,
+ vblank_min,
OV13858_VTS_MAX - ov13858->cur_mode->height, 1,
- ov13858->cur_mode->vts
- - ov13858->cur_mode->height);
+ vblank_def);
ov13858->hblank = v4l2_ctrl_new_std(
ctrl_hdlr, &ov13858_ctrl_ops, V4L2_CID_HBLANK,
@@ -1645,7 +1656,7 @@ static int ov13858_init_controls(struct ov13858 *ov13858)
OV13858_PPL_540MHZ - ov13858->cur_mode->width);
ov13858->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
- exposure_max = ov13858->cur_mode->vts - 8;
+ exposure_max = ov13858->cur_mode->vts_def - 8;
ov13858->exposure = v4l2_ctrl_new_std(
ctrl_hdlr, &ov13858_ctrl_ops,
V4L2_CID_EXPOSURE, OV13858_EXPOSURE_MIN,

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