Hi Daniel, On 15-05-2017 16:52, Daniel Vetter wrote: > On Mon, May 15, 2017 at 10:53:25AM +0200, Daniel Vetter wrote: >> On Thu, May 11, 2017 at 10:06:02AM +0100, Jose Abreu wrote: >>> Now that we have a callback to check if crtc supports a given mode >>> we can use it in arcpgu so that we restrict the number of probbed >>> modes to the ones we can actually display. >>> >>> This is specially useful because arcpgu crtc is responsible to set >>> a clock value in the commit() stage but unfortunatelly this clock >>> does not support all the needed ranges. >>> >>> Also, remove the atomic_check() callback as mode_valid() callback >>> will be called before. >>> >>> Signed-off-by: Jose Abreu <joabreu@xxxxxxxxxxxx> >>> Cc: Carlos Palminha <palminha@xxxxxxxxxxxx> >>> Cc: Alexey Brodkin <abrodkin@xxxxxxxxxxxx> >>> Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> >>> Cc: Daniel Vetter <daniel.vetter@xxxxxxxx> >>> Cc: Dave Airlie <airlied@xxxxxxxx> >>> Cc: Andrzej Hajda <a.hajda@xxxxxxxxxxx> >>> Cc: Archit Taneja <architt@xxxxxxxxxxxxxx> >> Btw for justifying your patch series a bit more, would be real sweet to >> roll ->mode_valid out to more drivers. I see two easy cases: >> >> bridge/analogix-anx78xx.c: has a simple mode_fixup which really is just a >> mode_valid callback >> >> bridge/synopsys/dw-hdmi.c: simply hand-rolls what you've done here, we >> could move the connector_mode valid to the bridge and done. >> >> Care to type these 2 patches on top, just to make this a bit more useful >> and a clearer case for merging? > Aside: There's a pile more drivers (encoders and crtc drivers) which would > similarly benefit and dont really look like they'd be hard to patch up: > - malidp_crtc_mode_fixup > - armada_drm_crtc_mode_fixup (armada isn't atomic, so forget this one) > - atmel_hlcdc_crtc_mode_fixup > - hdmi_mode_fixup in exynos_hdmi.c > - vc4_crtc_mode_fixup and vc4_dpi_encoder_mode_fixup (they both just check > for interlaced modes, we could probably dump the same check in > connector->mode_valid). > > Plus the 2 bridge drivers. Everyone else does either something more > complex, or something that's not quite correct. > -Daniel Sorry for being silent but I am away from office this week. I will try to evaluate and add this in next version. In the meantime I will review the documentation patches you sent. Thanks! Best regards, Jose Miguel Abreu > >> Thanks, Daniel >> >>> --- >>> drivers/gpu/drm/arc/arcpgu_crtc.c | 39 ++++++++++++++++++++++++--------------- >>> 1 file changed, 24 insertions(+), 15 deletions(-) >>> >>> diff --git a/drivers/gpu/drm/arc/arcpgu_crtc.c b/drivers/gpu/drm/arc/arcpgu_crtc.c >>> index ad9a959..01cae0a 100644 >>> --- a/drivers/gpu/drm/arc/arcpgu_crtc.c >>> +++ b/drivers/gpu/drm/arc/arcpgu_crtc.c >>> @@ -32,6 +32,18 @@ >>> { "r8g8b8", 24, {16, 8}, {8, 8}, {0, 8}, {0, 0}, DRM_FORMAT_RGB888 }, >>> }; >>> >>> +static bool arc_pgu_is_mode_valid(struct arcpgu_drm_private *arcpgu, >>> + const struct drm_display_mode *mode) >>> +{ >>> + long rate, clk_rate = mode->clock * 1000; >>> + >>> + rate = clk_round_rate(arcpgu->clk, clk_rate); >>> + if (rate != clk_rate) >>> + return false; >>> + >>> + return true; >>> +} >>> + >>> static void arc_pgu_set_pxl_fmt(struct drm_crtc *crtc) >>> { >>> struct arcpgu_drm_private *arcpgu = crtc_to_arcpgu_priv(crtc); >>> @@ -64,6 +76,17 @@ static void arc_pgu_set_pxl_fmt(struct drm_crtc *crtc) >>> .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state, >>> }; >>> >>> +enum drm_mode_status arc_pgu_crtc_mode_valid(struct drm_crtc *crtc, >>> + const struct drm_display_mode *mode) >>> +{ >>> + struct arcpgu_drm_private *arcpgu = crtc_to_arcpgu_priv(crtc); >>> + >>> + if (!arc_pgu_is_mode_valid(arcpgu, mode)) >>> + return MODE_NOCLOCK; >>> + >>> + return MODE_OK; >>> +} >>> + >>> static void arc_pgu_crtc_mode_set_nofb(struct drm_crtc *crtc) >>> { >>> struct arcpgu_drm_private *arcpgu = crtc_to_arcpgu_priv(crtc); >>> @@ -129,20 +152,6 @@ static void arc_pgu_crtc_disable(struct drm_crtc *crtc) >>> ~ARCPGU_CTRL_ENABLE_MASK); >>> } >>> >>> -static int arc_pgu_crtc_atomic_check(struct drm_crtc *crtc, >>> - struct drm_crtc_state *state) >>> -{ >>> - struct arcpgu_drm_private *arcpgu = crtc_to_arcpgu_priv(crtc); >>> - struct drm_display_mode *mode = &state->adjusted_mode; >>> - long rate, clk_rate = mode->clock * 1000; >>> - >>> - rate = clk_round_rate(arcpgu->clk, clk_rate); >>> - if (rate != clk_rate) >>> - return -EINVAL; >>> - >>> - return 0; >>> -} >>> - >>> static void arc_pgu_crtc_atomic_begin(struct drm_crtc *crtc, >>> struct drm_crtc_state *state) >>> { >>> @@ -158,6 +167,7 @@ static void arc_pgu_crtc_atomic_begin(struct drm_crtc *crtc, >>> } >>> >>> static const struct drm_crtc_helper_funcs arc_pgu_crtc_helper_funcs = { >>> + .mode_valid = arc_pgu_crtc_mode_valid, >>> .mode_set = drm_helper_crtc_mode_set, >>> .mode_set_base = drm_helper_crtc_mode_set_base, >>> .mode_set_nofb = arc_pgu_crtc_mode_set_nofb, >>> @@ -165,7 +175,6 @@ static void arc_pgu_crtc_atomic_begin(struct drm_crtc *crtc, >>> .disable = arc_pgu_crtc_disable, >>> .prepare = arc_pgu_crtc_disable, >>> .commit = arc_pgu_crtc_enable, >>> - .atomic_check = arc_pgu_crtc_atomic_check, >>> .atomic_begin = arc_pgu_crtc_atomic_begin, >>> }; >>> >>> -- >>> 1.9.1 >>> >>> >> -- >> Daniel Vetter >> Software Engineer, Intel Corporation >> https://urldefense.proofpoint.com/v2/url?u=http-3A__blog.ffwll.ch&d=DwIGaQ&c=DPL6_X_6JkXFx7AXWqB0tg&r=yaVFU4TjGY0gVF8El1uKcisy6TPsyCl9uN7Wsis-qhY&m=v9tZNfdrkm8mrAlJyEpm71Te7tDReAFXijS23BkDSTo&s=Y6DG3RpFLs0nomQ09FA3hqCqq6MQ3dvG81s_2XlVytM&e= _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel