Re: [Intel-gfx] [PATCH v7 14/23] drm/modes: Properly generate a drm_display_mode from a named mode
On Tue, Nov 08, 2022 at 10:40:07AM +0100, Noralf Trønnes wrote:
>
>
> Den 07.11.2022 18.49, skrev Noralf Trønnes:
> >
> >
> > Den 07.11.2022 15.16, skrev Maxime Ripard:
> >> The framework will get the drm_display_mode from the drm_cmdline_mode it
> >> got by parsing the video command line argument by calling
> >> drm_connector_pick_cmdline_mode().
> >>
> >> The heavy lifting will then be done by the
> >> drm_mode_create_from_cmdline_mode()
> >> function.
> >>
> >> In the case of the named modes though, there's no real code to make that
> >> translation and we rely on the drivers to guess which actual display mode
> >> we meant.
> >>
> >> Let's modify drm_mode_create_from_cmdline_mode() to properly generate the
> >> drm_display_mode we mean when passing a named mode.
> >>
> >> Signed-off-by: Maxime Ripard
> >>
> >> ---
> >> Changes in v7:
> >> - Use tv_mode_specified in drm_mode_parse_command_line_for_connector
> >>
> >> Changes in v6:
> >> - Fix get_modes to return 0 instead of an error code
> >> - Rename the tests to follow the DRM test naming convention
> >>
> >> Changes in v5:
> >> - Switched to KUNIT_ASSERT_NOT_NULL
> >> ---
> >> drivers/gpu/drm/drm_modes.c | 34 ++-
> >> drivers/gpu/drm/tests/drm_client_modeset_test.c | 77
> >> -
> >> 2 files changed, 109 insertions(+), 2 deletions(-)
> >>
> >> diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c
> >> index dc037f7ceb37..49441cabdd9d 100644
> >> --- a/drivers/gpu/drm/drm_modes.c
> >> +++ b/drivers/gpu/drm/drm_modes.c
> >> @@ -2497,6 +2497,36 @@ bool
> >> drm_mode_parse_command_line_for_connector(const char *mode_option,
> >> }
> >> EXPORT_SYMBOL(drm_mode_parse_command_line_for_connector);
> >>
> >> +static struct drm_display_mode *drm_named_mode(struct drm_device *dev,
> >> + struct drm_cmdline_mode *cmd)
> >> +{
> >> + struct drm_display_mode *mode;
> >> + unsigned int i;
> >> +
> >> + for (i = 0; i < ARRAY_SIZE(drm_named_modes); i++) {
> >> + const struct drm_named_mode *named_mode = _named_modes[i];
> >> +
> >> + if (strcmp(cmd->name, named_mode->name))
> >> + continue;
> >> +
> >> + if (!cmd->tv_mode_specified)
> >> + continue;
> >
> > Only a named mode will set cmd->name, so is this check necessary?
> >
> >> +
> >> + mode = drm_analog_tv_mode(dev,
> >> +named_mode->tv_mode,
> >> +named_mode->pixel_clock_khz * 1000,
> >> +named_mode->xres,
> >> +named_mode->yres,
> >> +named_mode->flags &
> >> DRM_MODE_FLAG_INTERLACE);
> >> + if (!mode)
> >> + return NULL;
> >> +
> >> + return mode;
> >
> > You can just return the result from drm_analog_tv_mode() directly.
> >
> > With those considered:
> >
> > Reviewed-by: Noralf Trønnes
> >
>
> I forgot one thing, shouldn't the named mode test in
> drm_connector_pick_cmdline_mode() be removed now that we have proper modes?
Good catch, I've fixed it
Thanks!
Maxime
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Re: [Intel-gfx] [PATCH v7 14/23] drm/modes: Properly generate a drm_display_mode from a named mode
Hi,
On Mon, Nov 07, 2022 at 06:49:57PM +0100, Noralf Trønnes wrote:
> Den 07.11.2022 15.16, skrev Maxime Ripard:
> > The framework will get the drm_display_mode from the drm_cmdline_mode it
> > got by parsing the video command line argument by calling
> > drm_connector_pick_cmdline_mode().
> >
> > The heavy lifting will then be done by the
> > drm_mode_create_from_cmdline_mode()
> > function.
> >
> > In the case of the named modes though, there's no real code to make that
> > translation and we rely on the drivers to guess which actual display mode
> > we meant.
> >
> > Let's modify drm_mode_create_from_cmdline_mode() to properly generate the
> > drm_display_mode we mean when passing a named mode.
> >
> > Signed-off-by: Maxime Ripard
> >
> > ---
> > Changes in v7:
> > - Use tv_mode_specified in drm_mode_parse_command_line_for_connector
> >
> > Changes in v6:
> > - Fix get_modes to return 0 instead of an error code
> > - Rename the tests to follow the DRM test naming convention
> >
> > Changes in v5:
> > - Switched to KUNIT_ASSERT_NOT_NULL
> > ---
> > drivers/gpu/drm/drm_modes.c | 34 ++-
> > drivers/gpu/drm/tests/drm_client_modeset_test.c | 77
> > -
> > 2 files changed, 109 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c
> > index dc037f7ceb37..49441cabdd9d 100644
> > --- a/drivers/gpu/drm/drm_modes.c
> > +++ b/drivers/gpu/drm/drm_modes.c
> > @@ -2497,6 +2497,36 @@ bool drm_mode_parse_command_line_for_connector(const
> > char *mode_option,
> > }
> > EXPORT_SYMBOL(drm_mode_parse_command_line_for_connector);
> >
> > +static struct drm_display_mode *drm_named_mode(struct drm_device *dev,
> > + struct drm_cmdline_mode *cmd)
> > +{
> > + struct drm_display_mode *mode;
> > + unsigned int i;
> > +
> > + for (i = 0; i < ARRAY_SIZE(drm_named_modes); i++) {
> > + const struct drm_named_mode *named_mode = _named_modes[i];
> > +
> > + if (strcmp(cmd->name, named_mode->name))
> > + continue;
> > +
> > + if (!cmd->tv_mode_specified)
> > + continue;
>
> Only a named mode will set cmd->name, so is this check necessary?
Yeah, but (and even though it's not the case at the moment) there's no
implication that a named mode will be about TV. We could use it for
VGA/XGA/etc just as well, in which case we wouldn't have
tv_mode_specified.
Maxime
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Re: [Intel-gfx] [PATCH v7 14/23] drm/modes: Properly generate a drm_display_mode from a named mode
Den 07.11.2022 18.49, skrev Noralf Trønnes:
>
>
> Den 07.11.2022 15.16, skrev Maxime Ripard:
>> The framework will get the drm_display_mode from the drm_cmdline_mode it
>> got by parsing the video command line argument by calling
>> drm_connector_pick_cmdline_mode().
>>
>> The heavy lifting will then be done by the
>> drm_mode_create_from_cmdline_mode()
>> function.
>>
>> In the case of the named modes though, there's no real code to make that
>> translation and we rely on the drivers to guess which actual display mode
>> we meant.
>>
>> Let's modify drm_mode_create_from_cmdline_mode() to properly generate the
>> drm_display_mode we mean when passing a named mode.
>>
>> Signed-off-by: Maxime Ripard
>>
>> ---
>> Changes in v7:
>> - Use tv_mode_specified in drm_mode_parse_command_line_for_connector
>>
>> Changes in v6:
>> - Fix get_modes to return 0 instead of an error code
>> - Rename the tests to follow the DRM test naming convention
>>
>> Changes in v5:
>> - Switched to KUNIT_ASSERT_NOT_NULL
>> ---
>> drivers/gpu/drm/drm_modes.c | 34 ++-
>> drivers/gpu/drm/tests/drm_client_modeset_test.c | 77
>> -
>> 2 files changed, 109 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c
>> index dc037f7ceb37..49441cabdd9d 100644
>> --- a/drivers/gpu/drm/drm_modes.c
>> +++ b/drivers/gpu/drm/drm_modes.c
>> @@ -2497,6 +2497,36 @@ bool drm_mode_parse_command_line_for_connector(const
>> char *mode_option,
>> }
>> EXPORT_SYMBOL(drm_mode_parse_command_line_for_connector);
>>
>> +static struct drm_display_mode *drm_named_mode(struct drm_device *dev,
>> + struct drm_cmdline_mode *cmd)
>> +{
>> +struct drm_display_mode *mode;
>> +unsigned int i;
>> +
>> +for (i = 0; i < ARRAY_SIZE(drm_named_modes); i++) {
>> +const struct drm_named_mode *named_mode = _named_modes[i];
>> +
>> +if (strcmp(cmd->name, named_mode->name))
>> +continue;
>> +
>> +if (!cmd->tv_mode_specified)
>> +continue;
>
> Only a named mode will set cmd->name, so is this check necessary?
>
>> +
>> +mode = drm_analog_tv_mode(dev,
>> + named_mode->tv_mode,
>> + named_mode->pixel_clock_khz * 1000,
>> + named_mode->xres,
>> + named_mode->yres,
>> + named_mode->flags &
>> DRM_MODE_FLAG_INTERLACE);
>> +if (!mode)
>> +return NULL;
>> +
>> +return mode;
>
> You can just return the result from drm_analog_tv_mode() directly.
>
> With those considered:
>
> Reviewed-by: Noralf Trønnes
>
I forgot one thing, shouldn't the named mode test in
drm_connector_pick_cmdline_mode() be removed now that we have proper modes?
Noralf.
>> +}
>> +
>> +return NULL;
>> +}
>> +
>> /**
>> * drm_mode_create_from_cmdline_mode - convert a command line modeline into
>> a DRM display mode
>> * @dev: DRM device to create the new mode for
>> @@ -2514,7 +2544,9 @@ drm_mode_create_from_cmdline_mode(struct drm_device
>> *dev,
>> if (cmd->xres == 0 || cmd->yres == 0)
>> return NULL;
>>
>> -if (cmd->cvt)
>> +if (strlen(cmd->name))
>> +mode = drm_named_mode(dev, cmd);
>> +else if (cmd->cvt)
>> mode = drm_cvt_mode(dev,
>> cmd->xres, cmd->yres,
>> cmd->refresh_specified ? cmd->refresh : 60,
>> diff --git a/drivers/gpu/drm/tests/drm_client_modeset_test.c
>> b/drivers/gpu/drm/tests/drm_client_modeset_test.c
>> index 3aa1acfe75df..fdfe9e20702e 100644
>> --- a/drivers/gpu/drm/tests/drm_client_modeset_test.c
>> +++ b/drivers/gpu/drm/tests/drm_client_modeset_test.c
>> @@ -21,7 +21,26 @@ struct drm_client_modeset_test_priv {
>>
>> static int drm_client_modeset_connector_get_modes(struct drm_connector
>> *connector)
>> {
>> -return drm_add_modes_noedid(connector, 1920, 1200);
>> +struct drm_display_mode *mode;
>> +int count;
>> +
>> +count = drm_add_modes_noedid(connector, 1920, 1200);
>> +
>> +mode = drm_mode_analog_ntsc_480i(connector->dev);
>> +if (!mode)
>> +return count;
>> +
>> +drm_mode_probed_add(connector, mode);
>> +count += 1;
>> +
>> +mode = drm_mode_analog_pal_576i(connector->dev);
>> +if (!mode)
>> +return count;
>> +
>> +drm_mode_probed_add(connector, mode);
>> +count += 1;
>> +
>> +return count;
>> }
>>
>> static const struct drm_connector_helper_funcs
>> drm_client_modeset_connector_helper_funcs = {
>> @@ -52,6 +71,9 @@ static int drm_client_modeset_test_init(struct kunit *test)
>>
>> drm_connector_helper_add(>connector,
>> _client_modeset_connector_helper_funcs);
>>
>> +
Re: [Intel-gfx] [PATCH v7 14/23] drm/modes: Properly generate a drm_display_mode from a named mode
Den 07.11.2022 15.16, skrev Maxime Ripard:
> The framework will get the drm_display_mode from the drm_cmdline_mode it
> got by parsing the video command line argument by calling
> drm_connector_pick_cmdline_mode().
>
> The heavy lifting will then be done by the drm_mode_create_from_cmdline_mode()
> function.
>
> In the case of the named modes though, there's no real code to make that
> translation and we rely on the drivers to guess which actual display mode
> we meant.
>
> Let's modify drm_mode_create_from_cmdline_mode() to properly generate the
> drm_display_mode we mean when passing a named mode.
>
> Signed-off-by: Maxime Ripard
>
> ---
> Changes in v7:
> - Use tv_mode_specified in drm_mode_parse_command_line_for_connector
>
> Changes in v6:
> - Fix get_modes to return 0 instead of an error code
> - Rename the tests to follow the DRM test naming convention
>
> Changes in v5:
> - Switched to KUNIT_ASSERT_NOT_NULL
> ---
> drivers/gpu/drm/drm_modes.c | 34 ++-
> drivers/gpu/drm/tests/drm_client_modeset_test.c | 77
> -
> 2 files changed, 109 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c
> index dc037f7ceb37..49441cabdd9d 100644
> --- a/drivers/gpu/drm/drm_modes.c
> +++ b/drivers/gpu/drm/drm_modes.c
> @@ -2497,6 +2497,36 @@ bool drm_mode_parse_command_line_for_connector(const
> char *mode_option,
> }
> EXPORT_SYMBOL(drm_mode_parse_command_line_for_connector);
>
> +static struct drm_display_mode *drm_named_mode(struct drm_device *dev,
> +struct drm_cmdline_mode *cmd)
> +{
> + struct drm_display_mode *mode;
> + unsigned int i;
> +
> + for (i = 0; i < ARRAY_SIZE(drm_named_modes); i++) {
> + const struct drm_named_mode *named_mode = _named_modes[i];
> +
> + if (strcmp(cmd->name, named_mode->name))
> + continue;
> +
> + if (!cmd->tv_mode_specified)
> + continue;
Only a named mode will set cmd->name, so is this check necessary?
> +
> + mode = drm_analog_tv_mode(dev,
> + named_mode->tv_mode,
> + named_mode->pixel_clock_khz * 1000,
> + named_mode->xres,
> + named_mode->yres,
> + named_mode->flags &
> DRM_MODE_FLAG_INTERLACE);
> + if (!mode)
> + return NULL;
> +
> + return mode;
You can just return the result from drm_analog_tv_mode() directly.
With those considered:
Reviewed-by: Noralf Trønnes
> + }
> +
> + return NULL;
> +}
> +
> /**
> * drm_mode_create_from_cmdline_mode - convert a command line modeline into
> a DRM display mode
> * @dev: DRM device to create the new mode for
> @@ -2514,7 +2544,9 @@ drm_mode_create_from_cmdline_mode(struct drm_device
> *dev,
> if (cmd->xres == 0 || cmd->yres == 0)
> return NULL;
>
> - if (cmd->cvt)
> + if (strlen(cmd->name))
> + mode = drm_named_mode(dev, cmd);
> + else if (cmd->cvt)
> mode = drm_cvt_mode(dev,
> cmd->xres, cmd->yres,
> cmd->refresh_specified ? cmd->refresh : 60,
> diff --git a/drivers/gpu/drm/tests/drm_client_modeset_test.c
> b/drivers/gpu/drm/tests/drm_client_modeset_test.c
> index 3aa1acfe75df..fdfe9e20702e 100644
> --- a/drivers/gpu/drm/tests/drm_client_modeset_test.c
> +++ b/drivers/gpu/drm/tests/drm_client_modeset_test.c
> @@ -21,7 +21,26 @@ struct drm_client_modeset_test_priv {
>
> static int drm_client_modeset_connector_get_modes(struct drm_connector
> *connector)
> {
> - return drm_add_modes_noedid(connector, 1920, 1200);
> + struct drm_display_mode *mode;
> + int count;
> +
> + count = drm_add_modes_noedid(connector, 1920, 1200);
> +
> + mode = drm_mode_analog_ntsc_480i(connector->dev);
> + if (!mode)
> + return count;
> +
> + drm_mode_probed_add(connector, mode);
> + count += 1;
> +
> + mode = drm_mode_analog_pal_576i(connector->dev);
> + if (!mode)
> + return count;
> +
> + drm_mode_probed_add(connector, mode);
> + count += 1;
> +
> + return count;
> }
>
> static const struct drm_connector_helper_funcs
> drm_client_modeset_connector_helper_funcs = {
> @@ -52,6 +71,9 @@ static int drm_client_modeset_test_init(struct kunit *test)
>
> drm_connector_helper_add(>connector,
> _client_modeset_connector_helper_funcs);
>
> + priv->connector.interlace_allowed = true;
> + priv->connector.doublescan_allowed = true;
> +
> return 0;
>
> }
> @@ -85,9 +107,62 @@ static void drm_test_pick_cmdline_res_1920_1080_60(struct
> kunit *test)
> KUNIT_EXPECT_TRUE(test, drm_mode_equal(expected_mode, mode));
> }
