Enable DSI EOTP feature for fixing some panel screen constance
shift issue.
Removing MIPI flag MIPI_DSI_MODE_EOT_PACKET to enable DSI EOTP.
Signed-off-by: Xin Ji <[email protected]>
---
drivers/gpu/drm/bridge/analogix/anx7625.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.c b/drivers/gpu/drm/bridge/analogix/anx7625.c
index 65cc059..e31eeb1b 100644
--- a/drivers/gpu/drm/bridge/analogix/anx7625.c
+++ b/drivers/gpu/drm/bridge/analogix/anx7625.c
@@ -1334,7 +1334,6 @@ static int anx7625_attach_dsi(struct anx7625_data *ctx)
dsi->format = MIPI_DSI_FMT_RGB888;
dsi->mode_flags = MIPI_DSI_MODE_VIDEO |
MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
- MIPI_DSI_MODE_EOT_PACKET |
MIPI_DSI_MODE_VIDEO_HSE;
if (mipi_dsi_attach(dsi) < 0) {
--
2.7.4
Hi Xin,
Thanks for the patch.
On Thu, 28 Jan 2021 at 12:17, Xin Ji <[email protected]> wrote:
>
> Enable DSI EOTP feature for fixing some panel screen constance
> shift issue.
> Removing MIPI flag MIPI_DSI_MODE_EOT_PACKET to enable DSI EOTP.
I don't think I quite understand how removing the
MIPI_DSI_MODE_EOT_PACKET flag will cause DSI EOTP to be enabled. Could
you extrapolate on this in the commit message?
>
> Signed-off-by: Xin Ji <[email protected]>
> ---
> drivers/gpu/drm/bridge/analogix/anx7625.c | 1 -
> 1 file changed, 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.c b/drivers/gpu/drm/bridge/analogix/anx7625.c
> index 65cc059..e31eeb1b 100644
> --- a/drivers/gpu/drm/bridge/analogix/anx7625.c
> +++ b/drivers/gpu/drm/bridge/analogix/anx7625.c
> @@ -1334,7 +1334,6 @@ static int anx7625_attach_dsi(struct anx7625_data *ctx)
> dsi->format = MIPI_DSI_FMT_RGB888;
> dsi->mode_flags = MIPI_DSI_MODE_VIDEO |
> MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
> - MIPI_DSI_MODE_EOT_PACKET |
> MIPI_DSI_MODE_VIDEO_HSE;
>
> if (mipi_dsi_attach(dsi) < 0) {
> --
> 2.7.4
>
On Thu, Feb 4, 2021 at 8:59 PM Andrzej Hajda <[email protected]> wrote:
>
>
> W dniu 04.02.2021 o 13:34, Nicolas Boichat pisze:
> > On Thu, Feb 4, 2021 at 8:07 PM Robert Foss <[email protected]> wrote:
> >> Hi Xin,
> >>
> >> Thanks for the patch.
> >>
> >> On Thu, 28 Jan 2021 at 12:17, Xin Ji <[email protected]> wrote:
> >>> Enable DSI EOTP feature for fixing some panel screen constance
> >>> shift issue.
> >>> Removing MIPI flag MIPI_DSI_MODE_EOT_PACKET to enable DSI EOTP.
> >> I don't think I quite understand how removing the
> >> MIPI_DSI_MODE_EOT_PACKET flag will cause DSI EOTP to be enabled. Could
> >> you extrapolate on this in the commit message?
> > That confused me as well, but it turns out that's how the flag is defined:
> > ```
> > /* disable EoT packets in HS mode */
> > #define MIPI_DSI_MODE_EOT_PACKET BIT(9)
> > ```
> > (https://protect2.fireeye.com/v1/url?k=5bd95ebd-044267fb-5bd8d5f2-0cc47a3003e8-ce9db8ea264d6901&q=1&e=900556dc-d199-4c18-9432-5c3465a98eae&u=https%3A%2F%2Felixir.bootlin.com%2Flinux%2Flatest%2Fsource%2Finclude%2Fdrm%2Fdrm_mipi_dsi.h%23L129)
> >
> > I'm almost tempted to put together a mass patch to rename all of these flags...
>
>
> Yes that would be good, many of these flags were just copy pasted from
> some hw datasheet, without good analysis how to adapt them to the framework.
I'll look into it (but that shouldn't block this patch).
>
>
> Regards
>
> Andrzej
>
>
> >
> >>> Signed-off-by: Xin Ji <[email protected]>
> >>> ---
> >>> drivers/gpu/drm/bridge/analogix/anx7625.c | 1 -
> >>> 1 file changed, 1 deletion(-)
> >>>
> >>> diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.c b/drivers/gpu/drm/bridge/analogix/anx7625.c
> >>> index 65cc059..e31eeb1b 100644
> >>> --- a/drivers/gpu/drm/bridge/analogix/anx7625.c
> >>> +++ b/drivers/gpu/drm/bridge/analogix/anx7625.c
> >>> @@ -1334,7 +1334,6 @@ static int anx7625_attach_dsi(struct anx7625_data *ctx)
> >>> dsi->format = MIPI_DSI_FMT_RGB888;
> >>> dsi->mode_flags = MIPI_DSI_MODE_VIDEO |
> >>> MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
> >>> - MIPI_DSI_MODE_EOT_PACKET |
> >>> MIPI_DSI_MODE_VIDEO_HSE;
> >>>
> >>> if (mipi_dsi_attach(dsi) < 0) {
> >>> --
> >>> 2.7.4
> >>>
> > _______________________________________________
> > dri-devel mailing list
> > [email protected]
> > https://protect2.fireeye.com/v1/url?k=457f3f39-1ae4067f-457eb476-0cc47a3003e8-b702072da729d8c9&q=1&e=900556dc-d199-4c18-9432-5c3465a98eae&u=https%3A%2F%2Flists.freedesktop.org%2Fmailman%2Flistinfo%2Fdri-devel
> >
On Thu, Feb 4, 2021 at 8:07 PM Robert Foss <[email protected]> wrote:
>
> Hi Xin,
>
> Thanks for the patch.
>
> On Thu, 28 Jan 2021 at 12:17, Xin Ji <[email protected]> wrote:
> >
> > Enable DSI EOTP feature for fixing some panel screen constance
> > shift issue.
> > Removing MIPI flag MIPI_DSI_MODE_EOT_PACKET to enable DSI EOTP.
>
> I don't think I quite understand how removing the
> MIPI_DSI_MODE_EOT_PACKET flag will cause DSI EOTP to be enabled. Could
> you extrapolate on this in the commit message?
That confused me as well, but it turns out that's how the flag is defined:
```
/* disable EoT packets in HS mode */
#define MIPI_DSI_MODE_EOT_PACKET BIT(9)
```
(https://elixir.bootlin.com/linux/latest/source/include/drm/drm_mipi_dsi.h#L129)
I'm almost tempted to put together a mass patch to rename all of these flags...
>
> >
> > Signed-off-by: Xin Ji <[email protected]>
> > ---
> > drivers/gpu/drm/bridge/analogix/anx7625.c | 1 -
> > 1 file changed, 1 deletion(-)
> >
> > diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.c b/drivers/gpu/drm/bridge/analogix/anx7625.c
> > index 65cc059..e31eeb1b 100644
> > --- a/drivers/gpu/drm/bridge/analogix/anx7625.c
> > +++ b/drivers/gpu/drm/bridge/analogix/anx7625.c
> > @@ -1334,7 +1334,6 @@ static int anx7625_attach_dsi(struct anx7625_data *ctx)
> > dsi->format = MIPI_DSI_FMT_RGB888;
> > dsi->mode_flags = MIPI_DSI_MODE_VIDEO |
> > MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
> > - MIPI_DSI_MODE_EOT_PACKET |
> > MIPI_DSI_MODE_VIDEO_HSE;
> >
> > if (mipi_dsi_attach(dsi) < 0) {
> > --
> > 2.7.4
> >
W dniu 04.02.2021 o 13:34, Nicolas Boichat pisze:
> On Thu, Feb 4, 2021 at 8:07 PM Robert Foss <[email protected]> wrote:
>> Hi Xin,
>>
>> Thanks for the patch.
>>
>> On Thu, 28 Jan 2021 at 12:17, Xin Ji <[email protected]> wrote:
>>> Enable DSI EOTP feature for fixing some panel screen constance
>>> shift issue.
>>> Removing MIPI flag MIPI_DSI_MODE_EOT_PACKET to enable DSI EOTP.
>> I don't think I quite understand how removing the
>> MIPI_DSI_MODE_EOT_PACKET flag will cause DSI EOTP to be enabled. Could
>> you extrapolate on this in the commit message?
> That confused me as well, but it turns out that's how the flag is defined:
> ```
> /* disable EoT packets in HS mode */
> #define MIPI_DSI_MODE_EOT_PACKET BIT(9)
> ```
> (https://protect2.fireeye.com/v1/url?k=5bd95ebd-044267fb-5bd8d5f2-0cc47a3003e8-ce9db8ea264d6901&q=1&e=900556dc-d199-4c18-9432-5c3465a98eae&u=https%3A%2F%2Felixir.bootlin.com%2Flinux%2Flatest%2Fsource%2Finclude%2Fdrm%2Fdrm_mipi_dsi.h%23L129)
>
> I'm almost tempted to put together a mass patch to rename all of these flags...
Yes that would be good, many of these flags were just copy pasted from
some hw datasheet, without good analysis how to adapt them to the framework.
Regards
Andrzej
>
>>> Signed-off-by: Xin Ji <[email protected]>
>>> ---
>>> drivers/gpu/drm/bridge/analogix/anx7625.c | 1 -
>>> 1 file changed, 1 deletion(-)
>>>
>>> diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.c b/drivers/gpu/drm/bridge/analogix/anx7625.c
>>> index 65cc059..e31eeb1b 100644
>>> --- a/drivers/gpu/drm/bridge/analogix/anx7625.c
>>> +++ b/drivers/gpu/drm/bridge/analogix/anx7625.c
>>> @@ -1334,7 +1334,6 @@ static int anx7625_attach_dsi(struct anx7625_data *ctx)
>>> dsi->format = MIPI_DSI_FMT_RGB888;
>>> dsi->mode_flags = MIPI_DSI_MODE_VIDEO |
>>> MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
>>> - MIPI_DSI_MODE_EOT_PACKET |
>>> MIPI_DSI_MODE_VIDEO_HSE;
>>>
>>> if (mipi_dsi_attach(dsi) < 0) {
>>> --
>>> 2.7.4
>>>
> _______________________________________________
> dri-devel mailing list
> [email protected]
> https://protect2.fireeye.com/v1/url?k=457f3f39-1ae4067f-457eb476-0cc47a3003e8-b702072da729d8c9&q=1&e=900556dc-d199-4c18-9432-5c3465a98eae&u=https%3A%2F%2Flists.freedesktop.org%2Fmailman%2Flistinfo%2Fdri-devel
>
On Thu, 4 Feb 2021 at 23:25, Nicolas Boichat <[email protected]> wrote:
>
> On Thu, Feb 4, 2021 at 8:59 PM Andrzej Hajda <[email protected]> wrote:
> >
> >
> > W dniu 04.02.2021 o 13:34, Nicolas Boichat pisze:
> > > On Thu, Feb 4, 2021 at 8:07 PM Robert Foss <[email protected]> wrote:
> > >> Hi Xin,
> > >>
> > >> Thanks for the patch.
> > >>
> > >> On Thu, 28 Jan 2021 at 12:17, Xin Ji <[email protected]> wrote:
> > >>> Enable DSI EOTP feature for fixing some panel screen constance
> > >>> shift issue.
> > >>> Removing MIPI flag MIPI_DSI_MODE_EOT_PACKET to enable DSI EOTP.
Does "constance shift" have a typo? Should it be "constant shift"?
With that sorted out feel free to add my r-b.
Reviewed-by: Robert Foss <[email protected]>
> > >> I don't think I quite understand how removing the
> > >> MIPI_DSI_MODE_EOT_PACKET flag will cause DSI EOTP to be enabled. Could
> > >> you extrapolate on this in the commit message?
> > > That confused me as well, but it turns out that's how the flag is defined:
> > > ```
> > > /* disable EoT packets in HS mode */
> > > #define MIPI_DSI_MODE_EOT_PACKET BIT(9)
> > > ```
> > > (https://protect2.fireeye.com/v1/url?k=5bd95ebd-044267fb-5bd8d5f2-0cc47a3003e8-ce9db8ea264d6901&q=1&e=900556dc-d199-4c18-9432-5c3465a98eae&u=https%3A%2F%2Felixir.bootlin.com%2Flinux%2Flatest%2Fsource%2Finclude%2Fdrm%2Fdrm_mipi_dsi.h%23L129)
> > >
> > > I'm almost tempted to put together a mass patch to rename all of these flags...
> >
> >
> > Yes that would be good, many of these flags were just copy pasted from
> > some hw datasheet, without good analysis how to adapt them to the framework.
>
> I'll look into it (but that shouldn't block this patch).
Thanks for clearing this up Nicolas & Andrzej!
On Fri, Feb 05, 2021 at 10:43:14AM +0100, Robert Foss wrote:
> On Thu, 4 Feb 2021 at 23:25, Nicolas Boichat <[email protected]> wrote:
> >
> > On Thu, Feb 4, 2021 at 8:59 PM Andrzej Hajda <[email protected]> wrote:
> > >
> > >
> > > W dniu 04.02.2021 o 13:34, Nicolas Boichat pisze:
> > > > On Thu, Feb 4, 2021 at 8:07 PM Robert Foss <[email protected]> wrote:
> > > >> Hi Xin,
> > > >>
> > > >> Thanks for the patch.
> > > >>
> > > >> On Thu, 28 Jan 2021 at 12:17, Xin Ji <[email protected]> wrote:
> > > >>> Enable DSI EOTP feature for fixing some panel screen constance
> > > >>> shift issue.
> > > >>> Removing MIPI flag MIPI_DSI_MODE_EOT_PACKET to enable DSI EOTP.
>
> Does "constance shift" have a typo? Should it be "constant shift"?
>
> With that sorted out feel free to add my r-b.
> Reviewed-by: Robert Foss <[email protected]>
Hi Robert Foss, thanks, I'll correct it.
Thanks,
Xin
>
> > > >> I don't think I quite understand how removing the
> > > >> MIPI_DSI_MODE_EOT_PACKET flag will cause DSI EOTP to be enabled. Could
> > > >> you extrapolate on this in the commit message?
> > > > That confused me as well, but it turns out that's how the flag is defined:
> > > > ```
> > > > /* disable EoT packets in HS mode */
> > > > #define MIPI_DSI_MODE_EOT_PACKET BIT(9)
> > > > ```
> > > > (https://protect2.fireeye.com/v1/url?k=5bd95ebd-044267fb-5bd8d5f2-0cc47a3003e8-ce9db8ea264d6901&q=1&e=900556dc-d199-4c18-9432-5c3465a98eae&u=https%3A%2F%2Felixir.bootlin.com%2Flinux%2Flatest%2Fsource%2Finclude%2Fdrm%2Fdrm_mipi_dsi.h%23L129)
> > > >
> > > > I'm almost tempted to put together a mass patch to rename all of these flags...
> > >
> > >
> > > Yes that would be good, many of these flags were just copy pasted from
> > > some hw datasheet, without good analysis how to adapt them to the framework.
> >
> > I'll look into it (but that shouldn't block this patch).
>
> Thanks for clearing this up Nicolas & Andrzej!