| Message ID | 1501267690-2338-1-git-send-email-chiranjeevi.rapolu@intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Hi Chiranjeevi, On Sat, Jul 29, 2017 at 3:48 AM, Chiranjeevi Rapolu <chiranjeevi.rapolu@intel.com> wrote: > Previously both link-frequency and pixel-rate reported by > the sensor was incorrect, resulting in incorrect FPS. > Report link-frequency in Hz rather than link data rate in bps. > Calculate pixel-rate from link-frequency. > > Signed-off-by: Chiranjeevi Rapolu <chiranjeevi.rapolu@intel.com> > --- > drivers/media/i2c/ov13858.c | 28 +++++++++++++++------------- > 1 file changed, 15 insertions(+), 13 deletions(-) > > diff --git a/drivers/media/i2c/ov13858.c b/drivers/media/i2c/ov13858.c > index 86550d8..2a5bb43 100644 > --- a/drivers/media/i2c/ov13858.c > +++ b/drivers/media/i2c/ov13858.c > @@ -60,8 +60,8 @@ > #define OV13858_VBLANK_MIN 56 > > /* HBLANK control - read only */ > -#define OV13858_PPL_540MHZ 2244 > -#define OV13858_PPL_1080MHZ 4488 > +#define OV13858_PPL_270MHZ 2244 > +#define OV13858_PLL_540MHZ 4488 typo? "PPL" seems correct, because it's supposed to be pixels per line. > > /* Exposure control */ > #define OV13858_REG_EXPOSURE 0x3500 > @@ -944,31 +944,33 @@ struct ov13858_mode { > > /* Configurations for supported link frequencies */ > #define OV13858_NUM_OF_LINK_FREQS 2 > -#define OV13858_LINK_FREQ_1080MBPS 1080000000 > -#define OV13858_LINK_FREQ_540MBPS 540000000 > +#define OV13858_LINK_FREQ_540MHZ 540000000 > +#define OV13858_LINK_FREQ_270MHZ 270000000 > #define OV13858_LINK_FREQ_INDEX_0 0 > #define OV13858_LINK_FREQ_INDEX_1 1 > > /* Menu items for LINK_FREQ V4L2 control */ > static const s64 link_freq_menu_items[OV13858_NUM_OF_LINK_FREQS] = { > - OV13858_LINK_FREQ_1080MBPS, > - OV13858_LINK_FREQ_540MBPS > + OV13858_LINK_FREQ_540MHZ, > + OV13858_LINK_FREQ_270MHZ > }; > > /* Link frequency configs */ > static const struct ov13858_link_freq_config > link_freq_configs[OV13858_NUM_OF_LINK_FREQS] = { > { > - .pixel_rate = 864000000, > - .pixels_per_line = OV13858_PPL_1080MHZ, > + /* pixel_rate = link_freq * 2 * nr_of_lanes / bits_per_sample */ > + .pixel_rate = ((uint64_t)OV13858_LINK_FREQ_540MHZ * 2 * 4) / 10, Instead of this cast, you can just define OV13858_LINK_FREQ_540MHZ to be 540000000ULL. > + .pixels_per_line = OV13858_PLL_540MHZ, s/PLL/PPL/? > .reg_list = { > .num_of_regs = ARRAY_SIZE(mipi_data_rate_1080mbps), > .regs = mipi_data_rate_1080mbps, > } > }, > { > - .pixel_rate = 432000000, > - .pixels_per_line = OV13858_PPL_540MHZ, > + /* pixel_rate = link_freq * 2 * nr_of_lanes / bits_per_sample */ > + .pixel_rate = ((uint64_t)OV13858_LINK_FREQ_270MHZ * 2 * 4) / 10, Ditto. > + .pixels_per_line = OV13858_PPL_270MHZ, > .reg_list = { > .num_of_regs = ARRAY_SIZE(mipi_data_rate_540mbps), > .regs = mipi_data_rate_540mbps, > @@ -1634,10 +1636,10 @@ static int ov13858_init_controls(struct ov13858 *ov13858) > > ov13858->hblank = v4l2_ctrl_new_std( > ctrl_hdlr, &ov13858_ctrl_ops, V4L2_CID_HBLANK, > - OV13858_PPL_1080MHZ - ov13858->cur_mode->width, > - OV13858_PPL_1080MHZ - ov13858->cur_mode->width, > + OV13858_PLL_540MHZ - ov13858->cur_mode->width, > + OV13858_PLL_540MHZ - ov13858->cur_mode->width, > 1, > - OV13858_PPL_1080MHZ - ov13858->cur_mode->width); > + OV13858_PLL_540MHZ - ov13858->cur_mode->width); Ditto. Best regards, Tomasz
diff --git a/drivers/media/i2c/ov13858.c b/drivers/media/i2c/ov13858.c index 86550d8..2a5bb43 100644 --- a/drivers/media/i2c/ov13858.c +++ b/drivers/media/i2c/ov13858.c @@ -60,8 +60,8 @@ #define OV13858_VBLANK_MIN 56 /* HBLANK control - read only */ -#define OV13858_PPL_540MHZ 2244 -#define OV13858_PPL_1080MHZ 4488 +#define OV13858_PPL_270MHZ 2244 +#define OV13858_PLL_540MHZ 4488 /* Exposure control */ #define OV13858_REG_EXPOSURE 0x3500 @@ -944,31 +944,33 @@ struct ov13858_mode { /* Configurations for supported link frequencies */ #define OV13858_NUM_OF_LINK_FREQS 2 -#define OV13858_LINK_FREQ_1080MBPS 1080000000 -#define OV13858_LINK_FREQ_540MBPS 540000000 +#define OV13858_LINK_FREQ_540MHZ 540000000 +#define OV13858_LINK_FREQ_270MHZ 270000000 #define OV13858_LINK_FREQ_INDEX_0 0 #define OV13858_LINK_FREQ_INDEX_1 1 /* Menu items for LINK_FREQ V4L2 control */ static const s64 link_freq_menu_items[OV13858_NUM_OF_LINK_FREQS] = { - OV13858_LINK_FREQ_1080MBPS, - OV13858_LINK_FREQ_540MBPS + OV13858_LINK_FREQ_540MHZ, + OV13858_LINK_FREQ_270MHZ }; /* Link frequency configs */ static const struct ov13858_link_freq_config link_freq_configs[OV13858_NUM_OF_LINK_FREQS] = { { - .pixel_rate = 864000000, - .pixels_per_line = OV13858_PPL_1080MHZ, + /* pixel_rate = link_freq * 2 * nr_of_lanes / bits_per_sample */ + .pixel_rate = ((uint64_t)OV13858_LINK_FREQ_540MHZ * 2 * 4) / 10, + .pixels_per_line = OV13858_PLL_540MHZ, .reg_list = { .num_of_regs = ARRAY_SIZE(mipi_data_rate_1080mbps), .regs = mipi_data_rate_1080mbps, } }, { - .pixel_rate = 432000000, - .pixels_per_line = OV13858_PPL_540MHZ, + /* pixel_rate = link_freq * 2 * nr_of_lanes / bits_per_sample */ + .pixel_rate = ((uint64_t)OV13858_LINK_FREQ_270MHZ * 2 * 4) / 10, + .pixels_per_line = OV13858_PPL_270MHZ, .reg_list = { .num_of_regs = ARRAY_SIZE(mipi_data_rate_540mbps), .regs = mipi_data_rate_540mbps, @@ -1634,10 +1636,10 @@ static int ov13858_init_controls(struct ov13858 *ov13858) ov13858->hblank = v4l2_ctrl_new_std( ctrl_hdlr, &ov13858_ctrl_ops, V4L2_CID_HBLANK, - OV13858_PPL_1080MHZ - ov13858->cur_mode->width, - OV13858_PPL_1080MHZ - ov13858->cur_mode->width, + OV13858_PLL_540MHZ - ov13858->cur_mode->width, + OV13858_PLL_540MHZ - ov13858->cur_mode->width, 1, - OV13858_PPL_1080MHZ - ov13858->cur_mode->width); + OV13858_PLL_540MHZ - ov13858->cur_mode->width); ov13858->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY; ov13858->exposure = v4l2_ctrl_new_std(
Previously both link-frequency and pixel-rate reported by the sensor was incorrect, resulting in incorrect FPS. Report link-frequency in Hz rather than link data rate in bps. Calculate pixel-rate from link-frequency. Signed-off-by: Chiranjeevi Rapolu <chiranjeevi.rapolu@intel.com> --- drivers/media/i2c/ov13858.c | 28 +++++++++++++++------------- 1 file changed, 15 insertions(+), 13 deletions(-)