| Message ID | 20231215082452.1720481-1-tomm.merciai@gmail.com |
|---|---|
| Headers | show |
| Series | media: i2c: alvium: store frame interval in subdev state | expand |
On Mon, Dec 18, 2023 at 11:30:38AM +0100, Tommaso Merciai wrote: > Hi Laurent, > > On Mon, Dec 18, 2023 at 04:59:05AM +0200, Laurent Pinchart wrote: > > Hi Tommaso, > > > > Thank you for the patch. > > > > On Fri, Dec 15, 2023 at 09:24:52AM +0100, Tommaso Merciai wrote: > > > Use the newly added storage for frame interval in the subdev state to > > > simplify the driver. > > > > > > Signed-off-by: Tommaso Merciai <tomm.merciai@gmail.com> > > > --- > > > drivers/media/i2c/alvium-csi2.c | 40 ++++++++++----------------------- > > > drivers/media/i2c/alvium-csi2.h | 2 -- > > > 2 files changed, 12 insertions(+), 30 deletions(-) > > > > > > diff --git a/drivers/media/i2c/alvium-csi2.c b/drivers/media/i2c/alvium-csi2.c > > > index fde456357be1..81f683b3c849 100644 > > > --- a/drivers/media/i2c/alvium-csi2.c > > > +++ b/drivers/media/i2c/alvium-csi2.c > > > @@ -1643,25 +1643,6 @@ static int alvium_hw_init(struct alvium_dev *alvium) > > > } > > > > > > /* --------------- Subdev Operations --------------- */ > > > - > > > -static int alvium_g_frame_interval(struct v4l2_subdev *sd, > > > - struct v4l2_subdev_state *sd_state, > > > - struct v4l2_subdev_frame_interval *fi) > > > -{ > > > - struct alvium_dev *alvium = sd_to_alvium(sd); > > > - > > > - /* > > > - * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2 > > > - * subdev active state API. > > > - */ > > > - if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE) > > > - return -EINVAL; > > > - > > > - fi->interval = alvium->frame_interval; > > > - > > > - return 0; > > > -} > > > - > > > static int alvium_s_frame_interval(struct v4l2_subdev *sd, > > > struct v4l2_subdev_state *sd_state, > > > struct v4l2_subdev_frame_interval *fi) > > > @@ -1669,6 +1650,7 @@ static int alvium_s_frame_interval(struct v4l2_subdev *sd, > > > struct alvium_dev *alvium = sd_to_alvium(sd); > > > struct device *dev = &alvium->i2c_client->dev; > > > u64 req_fr, dft_fr, min_fr, max_fr; > > > + struct v4l2_fract *interval; > > > int ret; > > > > > > /* > > > > You should drop the FIXME comment here and the ACTIVE check... > > Oks, thanks. > > > > > > @@ -1701,9 +1683,10 @@ static int alvium_s_frame_interval(struct v4l2_subdev *sd, > > > if (req_fr >= max_fr && req_fr <= min_fr) > > > req_fr = dft_fr; > > > > > > - alvium->fr = req_fr; > > > - alvium->frame_interval.numerator = fi->interval.numerator; > > > - alvium->frame_interval.denominator = fi->interval.denominator; > > > + interval = v4l2_subdev_state_get_interval(sd_state, 0); > > > + > > > + interval->numerator = fi->interval.numerator; > > > + interval->denominator = fi->interval.denominator; > > > > > > > ... and here only call alvium_set_frame_rate() for the ACTIVE frame > > interval. > > I don't completely got this comment, can you give me more details about > please. Thanks in advance! alvium_s_frame_interval() can be called both for the TRY and ACTIVE status. The hardware registers should be written only for the ACTIVE state. > > > return alvium_set_frame_rate(alvium, req_fr); > > > } > > > @@ -1853,6 +1836,7 @@ static int alvium_init_state(struct v4l2_subdev *sd, > > > { > > > struct alvium_dev *alvium = sd_to_alvium(sd); > > > struct alvium_mode *mode = &alvium->mode; > > > + struct v4l2_fract *interval; > > > struct v4l2_subdev_format sd_fmt = { > > > .which = V4L2_SUBDEV_FORMAT_TRY, > > > .format = alvium_csi2_default_fmt, > > > @@ -1870,6 +1854,11 @@ static int alvium_init_state(struct v4l2_subdev *sd, > > > *v4l2_subdev_state_get_crop(state, 0) = sd_crop.rect; > > > *v4l2_subdev_state_get_format(state, 0) = sd_fmt.format; > > > > > > + /* Setup initial frame interval*/ > > > + interval = v4l2_subdev_state_get_interval(state, 0); > > > + interval->numerator = 1; > > > + interval->denominator = ALVIUM_DEFAULT_FR_HZ; > > > + > > > return 0; > > > } > > > > > > @@ -2239,7 +2228,7 @@ static const struct v4l2_subdev_pad_ops alvium_pad_ops = { > > > .set_fmt = alvium_set_fmt, > > > .get_selection = alvium_get_selection, > > > .set_selection = alvium_set_selection, > > > - .get_frame_interval = alvium_g_frame_interval, > > > + .get_frame_interval = v4l2_subdev_get_frame_interval, > > > .set_frame_interval = alvium_s_frame_interval, > > > }; > > > > > > @@ -2260,11 +2249,6 @@ static int alvium_subdev_init(struct alvium_dev *alvium) > > > struct v4l2_subdev *sd = &alvium->sd; > > > int ret; > > > > > > - /* Setup initial frame interval*/ > > > - alvium->frame_interval.numerator = 1; > > > - alvium->frame_interval.denominator = ALVIUM_DEFAULT_FR_HZ; > > > - alvium->fr = ALVIUM_DEFAULT_FR_HZ; > > > - > > > /* Setup the initial mode */ > > > alvium->mode.fmt = alvium_csi2_default_fmt; > > > alvium->mode.width = alvium_csi2_default_fmt.width; > > > diff --git a/drivers/media/i2c/alvium-csi2.h b/drivers/media/i2c/alvium-csi2.h > > > index a6529b28e7dd..f5e26257b042 100644 > > > --- a/drivers/media/i2c/alvium-csi2.h > > > +++ b/drivers/media/i2c/alvium-csi2.h > > > @@ -442,8 +442,6 @@ struct alvium_dev { > > > s32 inc_sharp; > > > > > > struct alvium_mode mode; > > > - struct v4l2_fract frame_interval; > > > - u64 fr; > > > > The fr field should have been removed by a previous patch (the one that > > will go between 1/3 an 2/3, see my review of 1/3) as shown by the fact > > that this patch only removes two locations where the field is set but > > none where it's read. > > > > > > > > u8 h_sup_csi_lanes; > > > u64 link_freq;
Hi Laurent, Thanks for your quick reply. On Mon, Dec 18, 2023 at 01:03:31PM +0200, Laurent Pinchart wrote: > On Mon, Dec 18, 2023 at 11:30:38AM +0100, Tommaso Merciai wrote: > > Hi Laurent, > > > > On Mon, Dec 18, 2023 at 04:59:05AM +0200, Laurent Pinchart wrote: > > > Hi Tommaso, > > > > > > Thank you for the patch. > > > > > > On Fri, Dec 15, 2023 at 09:24:52AM +0100, Tommaso Merciai wrote: > > > > Use the newly added storage for frame interval in the subdev state to > > > > simplify the driver. > > > > > > > > Signed-off-by: Tommaso Merciai <tomm.merciai@gmail.com> > > > > --- > > > > drivers/media/i2c/alvium-csi2.c | 40 ++++++++++----------------------- > > > > drivers/media/i2c/alvium-csi2.h | 2 -- > > > > 2 files changed, 12 insertions(+), 30 deletions(-) > > > > > > > > diff --git a/drivers/media/i2c/alvium-csi2.c b/drivers/media/i2c/alvium-csi2.c > > > > index fde456357be1..81f683b3c849 100644 > > > > --- a/drivers/media/i2c/alvium-csi2.c > > > > +++ b/drivers/media/i2c/alvium-csi2.c > > > > @@ -1643,25 +1643,6 @@ static int alvium_hw_init(struct alvium_dev *alvium) > > > > } > > > > > > > > /* --------------- Subdev Operations --------------- */ > > > > - > > > > -static int alvium_g_frame_interval(struct v4l2_subdev *sd, > > > > - struct v4l2_subdev_state *sd_state, > > > > - struct v4l2_subdev_frame_interval *fi) > > > > -{ > > > > - struct alvium_dev *alvium = sd_to_alvium(sd); > > > > - > > > > - /* > > > > - * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2 > > > > - * subdev active state API. > > > > - */ > > > > - if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE) > > > > - return -EINVAL; > > > > - > > > > - fi->interval = alvium->frame_interval; > > > > - > > > > - return 0; > > > > -} > > > > - > > > > static int alvium_s_frame_interval(struct v4l2_subdev *sd, > > > > struct v4l2_subdev_state *sd_state, > > > > struct v4l2_subdev_frame_interval *fi) > > > > @@ -1669,6 +1650,7 @@ static int alvium_s_frame_interval(struct v4l2_subdev *sd, > > > > struct alvium_dev *alvium = sd_to_alvium(sd); > > > > struct device *dev = &alvium->i2c_client->dev; > > > > u64 req_fr, dft_fr, min_fr, max_fr; > > > > + struct v4l2_fract *interval; > > > > int ret; > > > > > > > > /* > > > > > > You should drop the FIXME comment here and the ACTIVE check... > > > > Oks, thanks. > > > > > > > > > @@ -1701,9 +1683,10 @@ static int alvium_s_frame_interval(struct v4l2_subdev *sd, > > > > if (req_fr >= max_fr && req_fr <= min_fr) > > > > req_fr = dft_fr; > > > > > > > > - alvium->fr = req_fr; > > > > - alvium->frame_interval.numerator = fi->interval.numerator; > > > > - alvium->frame_interval.denominator = fi->interval.denominator; > > > > + interval = v4l2_subdev_state_get_interval(sd_state, 0); > > > > + > > > > + interval->numerator = fi->interval.numerator; > > > > + interval->denominator = fi->interval.denominator; > > > > > > > > > > ... and here only call alvium_set_frame_rate() for the ACTIVE frame > > > interval. > > > > I don't completely got this comment, can you give me more details about > > please. Thanks in advance! > > alvium_s_frame_interval() can be called both for the TRY and ACTIVE > status. The hardware registers should be written only for the ACTIVE > state. Do you think could be sufficient an if check like this? - return alvium_set_frame_rate(alvium, req_fr); + if (fi->which == V4L2_SUBDEV_FORMAT_ACTIVE) + return alvium_set_frame_rate(alvium, req_fr); + + return ret; } Thanks & Regards, Tommaso > > > > @@ -1853,6 +1836,7 @@ static int alvium_init_state(struct v4l2_subdev *sd, > > > > { > > > > struct alvium_dev *alvium = sd_to_alvium(sd); > > > > struct alvium_mode *mode = &alvium->mode; > > > > + struct v4l2_fract *interval; > > > > struct v4l2_subdev_format sd_fmt = { > > > > .which = V4L2_SUBDEV_FORMAT_TRY, > > > > .format = alvium_csi2_default_fmt, > > > > @@ -1870,6 +1854,11 @@ static int alvium_init_state(struct v4l2_subdev *sd, > > > > *v4l2_subdev_state_get_crop(state, 0) = sd_crop.rect; > > > > *v4l2_subdev_state_get_format(state, 0) = sd_fmt.format; > > > > > > > > + /* Setup initial frame interval*/ > > > > + interval = v4l2_subdev_state_get_interval(state, 0); > > > > + interval->numerator = 1; > > > > + interval->denominator = ALVIUM_DEFAULT_FR_HZ; > > > > + > > > > return 0; > > > > } > > > > > > > > @@ -2239,7 +2228,7 @@ static const struct v4l2_subdev_pad_ops alvium_pad_ops = { > > > > .set_fmt = alvium_set_fmt, > > > > .get_selection = alvium_get_selection, > > > > .set_selection = alvium_set_selection, > > > > - .get_frame_interval = alvium_g_frame_interval, > > > > + .get_frame_interval = v4l2_subdev_get_frame_interval, > > > > .set_frame_interval = alvium_s_frame_interval, > > > > }; > > > > > > > > @@ -2260,11 +2249,6 @@ static int alvium_subdev_init(struct alvium_dev *alvium) > > > > struct v4l2_subdev *sd = &alvium->sd; > > > > int ret; > > > > > > > > - /* Setup initial frame interval*/ > > > > - alvium->frame_interval.numerator = 1; > > > > - alvium->frame_interval.denominator = ALVIUM_DEFAULT_FR_HZ; > > > > - alvium->fr = ALVIUM_DEFAULT_FR_HZ; > > > > - > > > > /* Setup the initial mode */ > > > > alvium->mode.fmt = alvium_csi2_default_fmt; > > > > alvium->mode.width = alvium_csi2_default_fmt.width; > > > > diff --git a/drivers/media/i2c/alvium-csi2.h b/drivers/media/i2c/alvium-csi2.h > > > > index a6529b28e7dd..f5e26257b042 100644 > > > > --- a/drivers/media/i2c/alvium-csi2.h > > > > +++ b/drivers/media/i2c/alvium-csi2.h > > > > @@ -442,8 +442,6 @@ struct alvium_dev { > > > > s32 inc_sharp; > > > > > > > > struct alvium_mode mode; > > > > - struct v4l2_fract frame_interval; > > > > - u64 fr; > > > > > > The fr field should have been removed by a previous patch (the one that > > > will go between 1/3 an 2/3, see my review of 1/3) as shown by the fact > > > that this patch only removes two locations where the field is set but > > > none where it's read. > > > > > > > > > > > u8 h_sup_csi_lanes; > > > > u64 link_freq; > > -- > Regards, > > Laurent Pinchart
On Mon, Dec 18, 2023 at 01:36:18PM +0200, Laurent Pinchart wrote: > On Mon, Dec 18, 2023 at 12:19:36PM +0100, Tommaso Merciai wrote: > > On Mon, Dec 18, 2023 at 01:03:31PM +0200, Laurent Pinchart wrote: > > > On Mon, Dec 18, 2023 at 11:30:38AM +0100, Tommaso Merciai wrote: > > > > On Mon, Dec 18, 2023 at 04:59:05AM +0200, Laurent Pinchart wrote: > > > > > On Fri, Dec 15, 2023 at 09:24:52AM +0100, Tommaso Merciai wrote: > > > > > > Use the newly added storage for frame interval in the subdev state to > > > > > > simplify the driver. > > > > > > > > > > > > Signed-off-by: Tommaso Merciai <tomm.merciai@gmail.com> > > > > > > --- > > > > > > drivers/media/i2c/alvium-csi2.c | 40 ++++++++++----------------------- > > > > > > drivers/media/i2c/alvium-csi2.h | 2 -- > > > > > > 2 files changed, 12 insertions(+), 30 deletions(-) > > > > > > > > > > > > diff --git a/drivers/media/i2c/alvium-csi2.c b/drivers/media/i2c/alvium-csi2.c > > > > > > index fde456357be1..81f683b3c849 100644 > > > > > > --- a/drivers/media/i2c/alvium-csi2.c > > > > > > +++ b/drivers/media/i2c/alvium-csi2.c > > > > > > @@ -1643,25 +1643,6 @@ static int alvium_hw_init(struct alvium_dev *alvium) > > > > > > } > > > > > > > > > > > > /* --------------- Subdev Operations --------------- */ > > > > > > - > > > > > > -static int alvium_g_frame_interval(struct v4l2_subdev *sd, > > > > > > - struct v4l2_subdev_state *sd_state, > > > > > > - struct v4l2_subdev_frame_interval *fi) > > > > > > -{ > > > > > > - struct alvium_dev *alvium = sd_to_alvium(sd); > > > > > > - > > > > > > - /* > > > > > > - * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2 > > > > > > - * subdev active state API. > > > > > > - */ > > > > > > - if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE) > > > > > > - return -EINVAL; > > > > > > - > > > > > > - fi->interval = alvium->frame_interval; > > > > > > - > > > > > > - return 0; > > > > > > -} > > > > > > - > > > > > > static int alvium_s_frame_interval(struct v4l2_subdev *sd, > > > > > > struct v4l2_subdev_state *sd_state, > > > > > > struct v4l2_subdev_frame_interval *fi) > > > > > > @@ -1669,6 +1650,7 @@ static int alvium_s_frame_interval(struct v4l2_subdev *sd, > > > > > > struct alvium_dev *alvium = sd_to_alvium(sd); > > > > > > struct device *dev = &alvium->i2c_client->dev; > > > > > > u64 req_fr, dft_fr, min_fr, max_fr; > > > > > > + struct v4l2_fract *interval; > > > > > > int ret; > > > > > > > > > > > > /* > > > > > > > > > > You should drop the FIXME comment here and the ACTIVE check... > > > > > > > > Oks, thanks. > > > > > > > > > > > > > > > @@ -1701,9 +1683,10 @@ static int alvium_s_frame_interval(struct v4l2_subdev *sd, > > > > > > if (req_fr >= max_fr && req_fr <= min_fr) > > > > > > req_fr = dft_fr; > > > > > > > > > > > > - alvium->fr = req_fr; > > > > > > - alvium->frame_interval.numerator = fi->interval.numerator; > > > > > > - alvium->frame_interval.denominator = fi->interval.denominator; > > > > > > + interval = v4l2_subdev_state_get_interval(sd_state, 0); > > > > > > + > > > > > > + interval->numerator = fi->interval.numerator; > > > > > > + interval->denominator = fi->interval.denominator; > > > > > > > > > > > > > > > > ... and here only call alvium_set_frame_rate() for the ACTIVE frame > > > > > interval. > > > > > > > > I don't completely got this comment, can you give me more details about > > > > please. Thanks in advance! > > > > > > alvium_s_frame_interval() can be called both for the TRY and ACTIVE > > > status. The hardware registers should be written only for the ACTIVE > > > state. > > > > Do you think could be sufficient an if check like this? > > > > - return alvium_set_frame_rate(alvium, req_fr); > > + if (fi->which == V4L2_SUBDEV_FORMAT_ACTIVE) > > + return alvium_set_frame_rate(alvium, req_fr); > > + > > + return ret; > > That's the idea, yes. The "return ret" can become "return 0". Or you > could write > > if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE) > return 0; > > return alvium_set_frame_rate(alvium, req_fr); > > > } (This is my personal idea eh :) ) Maybe better: if (fi->which == V4L2_SUBDEV_FORMAT_ACTIVE) ret = alvium_set_frame_rate(alvium, req_fr); return ret; What do you think? Regards, Tommaso > > > > > > > > @@ -1853,6 +1836,7 @@ static int alvium_init_state(struct v4l2_subdev *sd, > > > > > > { > > > > > > struct alvium_dev *alvium = sd_to_alvium(sd); > > > > > > struct alvium_mode *mode = &alvium->mode; > > > > > > + struct v4l2_fract *interval; > > > > > > struct v4l2_subdev_format sd_fmt = { > > > > > > .which = V4L2_SUBDEV_FORMAT_TRY, > > > > > > .format = alvium_csi2_default_fmt, > > > > > > @@ -1870,6 +1854,11 @@ static int alvium_init_state(struct v4l2_subdev *sd, > > > > > > *v4l2_subdev_state_get_crop(state, 0) = sd_crop.rect; > > > > > > *v4l2_subdev_state_get_format(state, 0) = sd_fmt.format; > > > > > > > > > > > > + /* Setup initial frame interval*/ > > > > > > + interval = v4l2_subdev_state_get_interval(state, 0); > > > > > > + interval->numerator = 1; > > > > > > + interval->denominator = ALVIUM_DEFAULT_FR_HZ; > > > > > > + > > > > > > return 0; > > > > > > } > > > > > > > > > > > > @@ -2239,7 +2228,7 @@ static const struct v4l2_subdev_pad_ops alvium_pad_ops = { > > > > > > .set_fmt = alvium_set_fmt, > > > > > > .get_selection = alvium_get_selection, > > > > > > .set_selection = alvium_set_selection, > > > > > > - .get_frame_interval = alvium_g_frame_interval, > > > > > > + .get_frame_interval = v4l2_subdev_get_frame_interval, > > > > > > .set_frame_interval = alvium_s_frame_interval, > > > > > > }; > > > > > > > > > > > > @@ -2260,11 +2249,6 @@ static int alvium_subdev_init(struct alvium_dev *alvium) > > > > > > struct v4l2_subdev *sd = &alvium->sd; > > > > > > int ret; > > > > > > > > > > > > - /* Setup initial frame interval*/ > > > > > > - alvium->frame_interval.numerator = 1; > > > > > > - alvium->frame_interval.denominator = ALVIUM_DEFAULT_FR_HZ; > > > > > > - alvium->fr = ALVIUM_DEFAULT_FR_HZ; > > > > > > - > > > > > > /* Setup the initial mode */ > > > > > > alvium->mode.fmt = alvium_csi2_default_fmt; > > > > > > alvium->mode.width = alvium_csi2_default_fmt.width; > > > > > > diff --git a/drivers/media/i2c/alvium-csi2.h b/drivers/media/i2c/alvium-csi2.h > > > > > > index a6529b28e7dd..f5e26257b042 100644 > > > > > > --- a/drivers/media/i2c/alvium-csi2.h > > > > > > +++ b/drivers/media/i2c/alvium-csi2.h > > > > > > @@ -442,8 +442,6 @@ struct alvium_dev { > > > > > > s32 inc_sharp; > > > > > > > > > > > > struct alvium_mode mode; > > > > > > - struct v4l2_fract frame_interval; > > > > > > - u64 fr; > > > > > > > > > > The fr field should have been removed by a previous patch (the one that > > > > > will go between 1/3 an 2/3, see my review of 1/3) as shown by the fact > > > > > that this patch only removes two locations where the field is set but > > > > > none where it's read. > > > > > > > > > > > > > > > > > u8 h_sup_csi_lanes; > > > > > > u64 link_freq; > > -- > Regards, > > Laurent Pinchart
On Mon, Dec 18, 2023 at 12:39:53PM +0100, Tommaso Merciai wrote: > On Mon, Dec 18, 2023 at 01:36:18PM +0200, Laurent Pinchart wrote: > > On Mon, Dec 18, 2023 at 12:19:36PM +0100, Tommaso Merciai wrote: > > > On Mon, Dec 18, 2023 at 01:03:31PM +0200, Laurent Pinchart wrote: > > > > On Mon, Dec 18, 2023 at 11:30:38AM +0100, Tommaso Merciai wrote: > > > > > On Mon, Dec 18, 2023 at 04:59:05AM +0200, Laurent Pinchart wrote: > > > > > > On Fri, Dec 15, 2023 at 09:24:52AM +0100, Tommaso Merciai wrote: > > > > > > > Use the newly added storage for frame interval in the subdev state to > > > > > > > simplify the driver. > > > > > > > > > > > > > > Signed-off-by: Tommaso Merciai <tomm.merciai@gmail.com> > > > > > > > --- > > > > > > > drivers/media/i2c/alvium-csi2.c | 40 ++++++++++----------------------- > > > > > > > drivers/media/i2c/alvium-csi2.h | 2 -- > > > > > > > 2 files changed, 12 insertions(+), 30 deletions(-) > > > > > > > > > > > > > > diff --git a/drivers/media/i2c/alvium-csi2.c b/drivers/media/i2c/alvium-csi2.c > > > > > > > index fde456357be1..81f683b3c849 100644 > > > > > > > --- a/drivers/media/i2c/alvium-csi2.c > > > > > > > +++ b/drivers/media/i2c/alvium-csi2.c > > > > > > > @@ -1643,25 +1643,6 @@ static int alvium_hw_init(struct alvium_dev *alvium) > > > > > > > } > > > > > > > > > > > > > > /* --------------- Subdev Operations --------------- */ > > > > > > > - > > > > > > > -static int alvium_g_frame_interval(struct v4l2_subdev *sd, > > > > > > > - struct v4l2_subdev_state *sd_state, > > > > > > > - struct v4l2_subdev_frame_interval *fi) > > > > > > > -{ > > > > > > > - struct alvium_dev *alvium = sd_to_alvium(sd); > > > > > > > - > > > > > > > - /* > > > > > > > - * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2 > > > > > > > - * subdev active state API. > > > > > > > - */ > > > > > > > - if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE) > > > > > > > - return -EINVAL; > > > > > > > - > > > > > > > - fi->interval = alvium->frame_interval; > > > > > > > - > > > > > > > - return 0; > > > > > > > -} > > > > > > > - > > > > > > > static int alvium_s_frame_interval(struct v4l2_subdev *sd, > > > > > > > struct v4l2_subdev_state *sd_state, > > > > > > > struct v4l2_subdev_frame_interval *fi) > > > > > > > @@ -1669,6 +1650,7 @@ static int alvium_s_frame_interval(struct v4l2_subdev *sd, > > > > > > > struct alvium_dev *alvium = sd_to_alvium(sd); > > > > > > > struct device *dev = &alvium->i2c_client->dev; > > > > > > > u64 req_fr, dft_fr, min_fr, max_fr; > > > > > > > + struct v4l2_fract *interval; > > > > > > > int ret; > > > > > > > > > > > > > > /* > > > > > > > > > > > > You should drop the FIXME comment here and the ACTIVE check... > > > > > > > > > > Oks, thanks. > > > > > > > > > > > > @@ -1701,9 +1683,10 @@ static int alvium_s_frame_interval(struct v4l2_subdev *sd, > > > > > > > if (req_fr >= max_fr && req_fr <= min_fr) > > > > > > > req_fr = dft_fr; > > > > > > > > > > > > > > - alvium->fr = req_fr; > > > > > > > - alvium->frame_interval.numerator = fi->interval.numerator; > > > > > > > - alvium->frame_interval.denominator = fi->interval.denominator; > > > > > > > + interval = v4l2_subdev_state_get_interval(sd_state, 0); > > > > > > > + > > > > > > > + interval->numerator = fi->interval.numerator; > > > > > > > + interval->denominator = fi->interval.denominator; > > > > > > > > > > > > > > > > > > > ... and here only call alvium_set_frame_rate() for the ACTIVE frame > > > > > > interval. > > > > > > > > > > I don't completely got this comment, can you give me more details about > > > > > please. Thanks in advance! > > > > > > > > alvium_s_frame_interval() can be called both for the TRY and ACTIVE > > > > status. The hardware registers should be written only for the ACTIVE > > > > state. > > > > > > Do you think could be sufficient an if check like this? > > > > > > - return alvium_set_frame_rate(alvium, req_fr); > > > + if (fi->which == V4L2_SUBDEV_FORMAT_ACTIVE) > > > + return alvium_set_frame_rate(alvium, req_fr); > > > + > > > + return ret; > > > > That's the idea, yes. The "return ret" can become "return 0". Or you > > could write > > > > if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE) > > return 0; > > > > return alvium_set_frame_rate(alvium, req_fr); > > > > > } > > (This is my personal idea eh :) ) > > Maybe better: > > if (fi->which == V4L2_SUBDEV_FORMAT_ACTIVE) > ret = alvium_set_frame_rate(alvium, req_fr); > > return ret; Works fine too (assuming ret gets initialized properly). > > > > > > > @@ -1853,6 +1836,7 @@ static int alvium_init_state(struct v4l2_subdev *sd, > > > > > > > { > > > > > > > struct alvium_dev *alvium = sd_to_alvium(sd); > > > > > > > struct alvium_mode *mode = &alvium->mode; > > > > > > > + struct v4l2_fract *interval; > > > > > > > struct v4l2_subdev_format sd_fmt = { > > > > > > > .which = V4L2_SUBDEV_FORMAT_TRY, > > > > > > > .format = alvium_csi2_default_fmt, > > > > > > > @@ -1870,6 +1854,11 @@ static int alvium_init_state(struct v4l2_subdev *sd, > > > > > > > *v4l2_subdev_state_get_crop(state, 0) = sd_crop.rect; > > > > > > > *v4l2_subdev_state_get_format(state, 0) = sd_fmt.format; > > > > > > > > > > > > > > + /* Setup initial frame interval*/ > > > > > > > + interval = v4l2_subdev_state_get_interval(state, 0); > > > > > > > + interval->numerator = 1; > > > > > > > + interval->denominator = ALVIUM_DEFAULT_FR_HZ; > > > > > > > + > > > > > > > return 0; > > > > > > > } > > > > > > > > > > > > > > @@ -2239,7 +2228,7 @@ static const struct v4l2_subdev_pad_ops alvium_pad_ops = { > > > > > > > .set_fmt = alvium_set_fmt, > > > > > > > .get_selection = alvium_get_selection, > > > > > > > .set_selection = alvium_set_selection, > > > > > > > - .get_frame_interval = alvium_g_frame_interval, > > > > > > > + .get_frame_interval = v4l2_subdev_get_frame_interval, > > > > > > > .set_frame_interval = alvium_s_frame_interval, > > > > > > > }; > > > > > > > > > > > > > > @@ -2260,11 +2249,6 @@ static int alvium_subdev_init(struct alvium_dev *alvium) > > > > > > > struct v4l2_subdev *sd = &alvium->sd; > > > > > > > int ret; > > > > > > > > > > > > > > - /* Setup initial frame interval*/ > > > > > > > - alvium->frame_interval.numerator = 1; > > > > > > > - alvium->frame_interval.denominator = ALVIUM_DEFAULT_FR_HZ; > > > > > > > - alvium->fr = ALVIUM_DEFAULT_FR_HZ; > > > > > > > - > > > > > > > /* Setup the initial mode */ > > > > > > > alvium->mode.fmt = alvium_csi2_default_fmt; > > > > > > > alvium->mode.width = alvium_csi2_default_fmt.width; > > > > > > > diff --git a/drivers/media/i2c/alvium-csi2.h b/drivers/media/i2c/alvium-csi2.h > > > > > > > index a6529b28e7dd..f5e26257b042 100644 > > > > > > > --- a/drivers/media/i2c/alvium-csi2.h > > > > > > > +++ b/drivers/media/i2c/alvium-csi2.h > > > > > > > @@ -442,8 +442,6 @@ struct alvium_dev { > > > > > > > s32 inc_sharp; > > > > > > > > > > > > > > struct alvium_mode mode; > > > > > > > - struct v4l2_fract frame_interval; > > > > > > > - u64 fr; > > > > > > > > > > > > The fr field should have been removed by a previous patch (the one that > > > > > > will go between 1/3 an 2/3, see my review of 1/3) as shown by the fact > > > > > > that this patch only removes two locations where the field is set but > > > > > > none where it's read. > > > > > > > > > > > > > > > > > > > > u8 h_sup_csi_lanes; > > > > > > > u64 link_freq;