| Message ID | 1519840432-61489-2-git-send-email-giulio.benetti@micronovasrl.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Wed, Feb 28, 2018 at 06:53:52PM +0100, Giulio Benetti wrote: > static struct drm_connector_helper_funcs sun4i_lvds_con_helper_funcs = { > .get_modes = sun4i_lvds_get_modes, > + .mode_valid = sun4i_lvds_mode_valid, > }; This should be on the encoder, not the connector. Maxime
Hi, Il 01/03/2018 10:57, Maxime Ripard ha scritto: > On Wed, Feb 28, 2018 at 06:53:52PM +0100, Giulio Benetti wrote: >> static struct drm_connector_helper_funcs sun4i_lvds_con_helper_funcs = { >> .get_modes = sun4i_lvds_get_modes, >> + .mode_valid = sun4i_lvds_mode_valid, >> }; > > This should be on the encoder, not the connector. I've seen it is bound to connector in rgb and to encoder in hdmi. Is it correct rgb mode_valid under connector funcs? Otherwise I send a patch also for that one. > > Maxime > > > > _______________________________________________ > dri-devel mailing list > dri-devel@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/dri-devel >
On Fri, Mar 02, 2018 at 12:42:14PM +0100, Giulio Benetti wrote: > Hi, > > Il 01/03/2018 10:57, Maxime Ripard ha scritto: > > On Wed, Feb 28, 2018 at 06:53:52PM +0100, Giulio Benetti wrote: > > > static struct drm_connector_helper_funcs sun4i_lvds_con_helper_funcs = { > > > .get_modes = sun4i_lvds_get_modes, > > > + .mode_valid = sun4i_lvds_mode_valid, > > > }; > > > > This should be on the encoder, not the connector. > > I've seen it is bound to connector in rgb and to encoder in hdmi. > Is it correct rgb mode_valid under connector funcs? > Otherwise I send a patch also for that one. This would need to be fixed as well. Bridges attach to encoder, not connectors, so if you ever have a bridge connected to the RGB output (like on the A13-Olinuxino), mode_valid isn't called at the moment. Maxime
Hi, Il 02/03/2018 15:37, Maxime Ripard ha scritto: > On Fri, Mar 02, 2018 at 12:42:14PM +0100, Giulio Benetti wrote: >> Hi, >> >> Il 01/03/2018 10:57, Maxime Ripard ha scritto: >>> On Wed, Feb 28, 2018 at 06:53:52PM +0100, Giulio Benetti wrote: >>>> static struct drm_connector_helper_funcs sun4i_lvds_con_helper_funcs = { >>>> .get_modes = sun4i_lvds_get_modes, >>>> + .mode_valid = sun4i_lvds_mode_valid, >>>> }; >>> >>> This should be on the encoder, not the connector. >> >> I've seen it is bound to connector in rgb and to encoder in hdmi. >> Is it correct rgb mode_valid under connector funcs? >> Otherwise I send a patch also for that one. > > This would need to be fixed as well. Bridges attach to encoder, not > connectors, so if you ever have a bridge connected to the RGB output > (like on the A13-Olinuxino), mode_valid isn't called at the moment. Ok, I will do the same for rgb and submit a patchset, need some time to test both lvds and rgb.
diff --git a/drivers/gpu/drm/sun4i/sun4i_lvds.c b/drivers/gpu/drm/sun4i/sun4i_lvds.c index be3f14d..75223ee 100644 --- a/drivers/gpu/drm/sun4i/sun4i_lvds.c +++ b/drivers/gpu/drm/sun4i/sun4i_lvds.c @@ -46,8 +46,63 @@ static int sun4i_lvds_get_modes(struct drm_connector *connector) return drm_panel_get_modes(tcon->panel); } +static int sun4i_lvds_mode_valid(struct drm_connector *connector, + struct drm_display_mode *mode) +{ + struct sun4i_lvds *lvds = drm_connector_to_sun4i_lvds(connector); + struct sun4i_tcon *tcon = lvds->tcon; + u32 hsync = mode->hsync_end - mode->hsync_start; + u32 vsync = mode->vsync_end - mode->vsync_start; + unsigned long rate = mode->clock * 1000; + long rounded_rate; + + DRM_DEBUG_DRIVER("Validating modes...\n"); + + if (hsync < 1) + return MODE_HSYNC_NARROW; + + if (hsync > 0x3ff) + return MODE_HSYNC_WIDE; + + if ((mode->hdisplay < 1) || (mode->htotal < 1)) + return MODE_H_ILLEGAL; + + if ((mode->hdisplay > 0x7ff) || (mode->htotal > 0xfff)) + return MODE_BAD_HVALUE; + + DRM_DEBUG_DRIVER("Horizontal parameters OK\n"); + + if (vsync < 1) + return MODE_VSYNC_NARROW; + + if (vsync > 0x3ff) + return MODE_VSYNC_WIDE; + + if ((mode->vdisplay < 1) || (mode->vtotal < 1)) + return MODE_V_ILLEGAL; + + if ((mode->vdisplay > 0x7ff) || (mode->vtotal > 0xfff)) + return MODE_BAD_VVALUE; + + DRM_DEBUG_DRIVER("Vertical parameters OK\n"); + + tcon->dclk_min_div = 7; + tcon->dclk_max_div = 18; + rounded_rate = clk_round_rate(tcon->dclk, rate); + if (rounded_rate < rate) + return MODE_CLOCK_LOW; + + if (rounded_rate > rate) + return MODE_CLOCK_HIGH; + + DRM_DEBUG_DRIVER("Clock rate OK\n"); + + return MODE_OK; +} + static struct drm_connector_helper_funcs sun4i_lvds_con_helper_funcs = { .get_modes = sun4i_lvds_get_modes, + .mode_valid = sun4i_lvds_mode_valid, }; static void
mode_valid function is missing for lvds. Add it based on rgb model, also setting up dclk_min_div and dclk_max_div Signed-off-by: Giulio Benetti <giulio.benetti@micronovasrl.com> --- drivers/gpu/drm/sun4i/sun4i_lvds.c | 55 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 55 insertions(+)