| Message ID | 20210704090230.26489-6-jagan@amarulasolutions.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | drm: bridge: Samsung MIPI DSIM bridge | expand |
Hi Jagan, On Sun, Jul 04, 2021 at 02:32:18PM +0530, Jagan Teki wrote: > Now the exynos dsi driver is fully aware of bridge > handling, so get the display mode from bridge, mode_set > API instead of legacy encoder crtc. > > This makes bridge usage more efficient instead of relying > on encoder stack. > > Add mode_set in drm_bridge_funcs. Based on your description I had expected to find get_modes implmneted and the flag DRM_BRIDGE_OP_MODES set. Sam > > Signed-off-by: Jagan Teki <jagan@amarulasolutions.com> > --- > drivers/gpu/drm/exynos/exynos_drm_dsi.c | 13 ++++++++++++- > 1 file changed, 12 insertions(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c > index d828be07c325..99a1b8c22313 100644 > --- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c > +++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c > @@ -275,6 +275,7 @@ struct exynos_dsi { > u32 format; > > int state; > + struct drm_display_mode mode; > struct drm_property *brightness; > struct completion completed; > > @@ -881,7 +882,7 @@ static int exynos_dsi_init_link(struct exynos_dsi *dsi) > > static void exynos_dsi_set_display_mode(struct exynos_dsi *dsi) > { > - struct drm_display_mode *m = &dsi->encoder.crtc->state->adjusted_mode; > + struct drm_display_mode *m = &dsi->mode; > unsigned int num_bits_resol = dsi->driver_data->num_bits_resol; > u32 reg; > > @@ -1411,6 +1412,15 @@ static void exynos_dsi_bridge_disable(struct drm_bridge *bridge) > pm_runtime_put_sync(dsi->dev); > } > > +static void exynos_dsi_bridge_mode_set(struct drm_bridge *bridge, > + const struct drm_display_mode *mode, > + const struct drm_display_mode *adjusted_mode) > +{ > + struct exynos_dsi *dsi = bridge_to_dsi(bridge); > + > + drm_mode_copy(&dsi->mode, adjusted_mode); > +} > + > static int exynos_dsi_panel_or_bridge(struct exynos_dsi *dsi, > struct device_node *node) > { > @@ -1451,6 +1461,7 @@ static int exynos_dsi_bridge_attach(struct drm_bridge *bridge, > static const struct drm_bridge_funcs exynos_dsi_bridge_funcs = { > .enable = exynos_dsi_bridge_enable, > .disable = exynos_dsi_bridge_disable, > + .mode_set = exynos_dsi_bridge_mode_set, > .attach = exynos_dsi_bridge_attach, > }; > > -- > 2.25.1
Hey Jagan, On Sun, 4 Jul 2021 at 11:04, Jagan Teki <jagan@amarulasolutions.com> wrote: > > Now the exynos dsi driver is fully aware of bridge > handling, so get the display mode from bridge, mode_set > API instead of legacy encoder crtc. > > This makes bridge usage more efficient instead of relying > on encoder stack. > > Add mode_set in drm_bridge_funcs. > > Signed-off-by: Jagan Teki <jagan@amarulasolutions.com> > --- > drivers/gpu/drm/exynos/exynos_drm_dsi.c | 13 ++++++++++++- > 1 file changed, 12 insertions(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c > index d828be07c325..99a1b8c22313 100644 > --- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c > +++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c > @@ -275,6 +275,7 @@ struct exynos_dsi { > u32 format; > > int state; > + struct drm_display_mode mode; > struct drm_property *brightness; > struct completion completed; > > @@ -881,7 +882,7 @@ static int exynos_dsi_init_link(struct exynos_dsi *dsi) > > static void exynos_dsi_set_display_mode(struct exynos_dsi *dsi) > { > - struct drm_display_mode *m = &dsi->encoder.crtc->state->adjusted_mode; > + struct drm_display_mode *m = &dsi->mode; > unsigned int num_bits_resol = dsi->driver_data->num_bits_resol; > u32 reg; > > @@ -1411,6 +1412,15 @@ static void exynos_dsi_bridge_disable(struct drm_bridge *bridge) > pm_runtime_put_sync(dsi->dev); > } > > +static void exynos_dsi_bridge_mode_set(struct drm_bridge *bridge, > + const struct drm_display_mode *mode, > + const struct drm_display_mode *adjusted_mode) > +{ > + struct exynos_dsi *dsi = bridge_to_dsi(bridge); > + > + drm_mode_copy(&dsi->mode, adjusted_mode); > +} > + > static int exynos_dsi_panel_or_bridge(struct exynos_dsi *dsi, > struct device_node *node) > { > @@ -1451,6 +1461,7 @@ static int exynos_dsi_bridge_attach(struct drm_bridge *bridge, > static const struct drm_bridge_funcs exynos_dsi_bridge_funcs = { > .enable = exynos_dsi_bridge_enable, > .disable = exynos_dsi_bridge_disable, > + .mode_set = exynos_dsi_bridge_mode_set, As far as I understand it, .enable(), .disable() &.mode_set() are deprecated[1] and should be replaced by atomic_enable(), atomic_disable() & atomic_enable() respectively. [1] https://lore.kernel.org/dri-devel/20210722062246.2512666-8-sam@ravnborg.org/ > .attach = exynos_dsi_bridge_attach, > }; > > -- > 2.25.1 >
On Thu, Jul 29, 2021 at 03:20:17PM +0200, Robert Foss wrote: > Hey Jagan, > > On Sun, 4 Jul 2021 at 11:04, Jagan Teki <jagan@amarulasolutions.com> wrote: > > > > Now the exynos dsi driver is fully aware of bridge > > handling, so get the display mode from bridge, mode_set > > API instead of legacy encoder crtc. > > > > This makes bridge usage more efficient instead of relying > > on encoder stack. > > > > Add mode_set in drm_bridge_funcs. > > > > Signed-off-by: Jagan Teki <jagan@amarulasolutions.com> > > --- > > drivers/gpu/drm/exynos/exynos_drm_dsi.c | 13 ++++++++++++- > > 1 file changed, 12 insertions(+), 1 deletion(-) > > > > diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c > > index d828be07c325..99a1b8c22313 100644 > > --- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c > > +++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c > > @@ -275,6 +275,7 @@ struct exynos_dsi { > > u32 format; > > > > int state; > > + struct drm_display_mode mode; > > struct drm_property *brightness; > > struct completion completed; > > > > @@ -881,7 +882,7 @@ static int exynos_dsi_init_link(struct exynos_dsi *dsi) > > > > static void exynos_dsi_set_display_mode(struct exynos_dsi *dsi) > > { > > - struct drm_display_mode *m = &dsi->encoder.crtc->state->adjusted_mode; > > + struct drm_display_mode *m = &dsi->mode; > > unsigned int num_bits_resol = dsi->driver_data->num_bits_resol; > > u32 reg; > > > > @@ -1411,6 +1412,15 @@ static void exynos_dsi_bridge_disable(struct drm_bridge *bridge) > > pm_runtime_put_sync(dsi->dev); > > } > > > > +static void exynos_dsi_bridge_mode_set(struct drm_bridge *bridge, > > + const struct drm_display_mode *mode, > > + const struct drm_display_mode *adjusted_mode) > > +{ > > + struct exynos_dsi *dsi = bridge_to_dsi(bridge); > > + > > + drm_mode_copy(&dsi->mode, adjusted_mode); > > +} > > + > > static int exynos_dsi_panel_or_bridge(struct exynos_dsi *dsi, > > struct device_node *node) > > { > > @@ -1451,6 +1461,7 @@ static int exynos_dsi_bridge_attach(struct drm_bridge *bridge, > > static const struct drm_bridge_funcs exynos_dsi_bridge_funcs = { > > .enable = exynos_dsi_bridge_enable, > > .disable = exynos_dsi_bridge_disable, > > + .mode_set = exynos_dsi_bridge_mode_set, > > As far as I understand it, .enable(), .disable() &.mode_set() are > deprecated[1] and should be replaced by atomic_enable(), > atomic_disable() & atomic_enable() respectively. > > [1] https://lore.kernel.org/dri-devel/20210722062246.2512666-8-sam@ravnborg.org/ Correct, we are slowly moving away from the deprecated bridge functions. Need to find time to update my patchset that address some of this. Sam
diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c index d828be07c325..99a1b8c22313 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c +++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c @@ -275,6 +275,7 @@ struct exynos_dsi { u32 format; int state; + struct drm_display_mode mode; struct drm_property *brightness; struct completion completed; @@ -881,7 +882,7 @@ static int exynos_dsi_init_link(struct exynos_dsi *dsi) static void exynos_dsi_set_display_mode(struct exynos_dsi *dsi) { - struct drm_display_mode *m = &dsi->encoder.crtc->state->adjusted_mode; + struct drm_display_mode *m = &dsi->mode; unsigned int num_bits_resol = dsi->driver_data->num_bits_resol; u32 reg; @@ -1411,6 +1412,15 @@ static void exynos_dsi_bridge_disable(struct drm_bridge *bridge) pm_runtime_put_sync(dsi->dev); } +static void exynos_dsi_bridge_mode_set(struct drm_bridge *bridge, + const struct drm_display_mode *mode, + const struct drm_display_mode *adjusted_mode) +{ + struct exynos_dsi *dsi = bridge_to_dsi(bridge); + + drm_mode_copy(&dsi->mode, adjusted_mode); +} + static int exynos_dsi_panel_or_bridge(struct exynos_dsi *dsi, struct device_node *node) { @@ -1451,6 +1461,7 @@ static int exynos_dsi_bridge_attach(struct drm_bridge *bridge, static const struct drm_bridge_funcs exynos_dsi_bridge_funcs = { .enable = exynos_dsi_bridge_enable, .disable = exynos_dsi_bridge_disable, + .mode_set = exynos_dsi_bridge_mode_set, .attach = exynos_dsi_bridge_attach, };
Now the exynos dsi driver is fully aware of bridge handling, so get the display mode from bridge, mode_set API instead of legacy encoder crtc. This makes bridge usage more efficient instead of relying on encoder stack. Add mode_set in drm_bridge_funcs. Signed-off-by: Jagan Teki <jagan@amarulasolutions.com> --- drivers/gpu/drm/exynos/exynos_drm_dsi.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-)