From: "Ville Syrjälä" <ville.syrjala@linux.intel.com>
To: clinton.a.taylor@intel.com
Cc: Intel-gfx@lists.freedesktop.org
Subject: Re: [PATCH] drm/edid: Reduce horizontal timings for pixel replicated modes
Date: Thu, 14 Aug 2014 21:48:11 +0300 [thread overview]
Message-ID: <20140814184811.GK4193@intel.com> (raw)
In-Reply-To: <1408039765-30255-1-git-send-email-clinton.a.taylor@intel.com>
On Thu, Aug 14, 2014 at 11:09:25AM -0700, clinton.a.taylor@intel.com wrote:
> From: Clint Taylor <clinton.a.taylor@intel.com>
>
> Pixel replicated modes should be 720 horizontal pixel and pixel
> replicated by the HW across the HDMI cable at 2X pixel clock. Current
> horizontal resolution of 1440 does not allow pixel duplication to
> occur and scaling artifacts occur on the TV. HDMI certification
> 7-26 currently fails for all pixel replicated modes. This change fizes
> the HDMI certification issues with 480i/576i.
>
> Signed-off-by: Clint Taylor <clinton.a.taylor@intel.com>
> ---
> drivers/gpu/drm/drm_edid.c | 100 ++++++++++++++++++-------------------
> drivers/gpu/drm/i915/intel_hdmi.c | 14 +++++-
> 2 files changed, 63 insertions(+), 51 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
> index f905c63..c7a26a7 100644
> --- a/drivers/gpu/drm/drm_edid.c
> +++ b/drivers/gpu/drm/drm_edid.c
> @@ -632,27 +632,27 @@ static const struct drm_display_mode edid_cea_modes[] = {
> DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC |
> DRM_MODE_FLAG_INTERLACE),
> .vrefresh = 60, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
> - /* 6 - 1440x480i@60Hz */
> - { DRM_MODE("1440x480i", DRM_MODE_TYPE_DRIVER, 27000, 1440, 1478,
> - 1602, 1716, 0, 480, 488, 494, 525, 0,
> + /* 6 - 720(1440)x480i@60Hz */
> + { DRM_MODE("720x480i", DRM_MODE_TYPE_DRIVER, 13500, 720, 739,
> + 801, 858, 0, 480, 488, 494, 525, 0,
As stated before I think I would have preferred explicit /2 here, but
if you prefer to have it this way I can live with it.
> DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
> DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK),
> .vrefresh = 60, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
> - /* 7 - 1440x480i@60Hz */
> - { DRM_MODE("1440x480i", DRM_MODE_TYPE_DRIVER, 27000, 1440, 1478,
> - 1602, 1716, 0, 480, 488, 494, 525, 0,
> + /* 7 - 720(1440)x480i@60Hz */
> + { DRM_MODE("720x480i", DRM_MODE_TYPE_DRIVER, 13500, 720, 739,
> + 801, 858, 0, 480, 488, 494, 525, 0,
> DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
> DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK),
> .vrefresh = 60, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
> - /* 8 - 1440x240@60Hz */
> - { DRM_MODE("1440x240", DRM_MODE_TYPE_DRIVER, 27000, 1440, 1478,
> - 1602, 1716, 0, 240, 244, 247, 262, 0,
> + /* 8 - 720(1440)x240@60Hz */
> + { DRM_MODE("720x240", DRM_MODE_TYPE_DRIVER, 13500, 720, 739,
> + 801, 858, 0, 240, 244, 247, 262, 0,
> DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
> DRM_MODE_FLAG_DBLCLK),
> .vrefresh = 60, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
> - /* 9 - 1440x240@60Hz */
> - { DRM_MODE("1440x240", DRM_MODE_TYPE_DRIVER, 27000, 1440, 1478,
> - 1602, 1716, 0, 240, 244, 247, 262, 0,
> + /* 9 - 720(1440)x240@60Hz */
> + { DRM_MODE("720x240", DRM_MODE_TYPE_DRIVER, 13500, 720, 739,
> + 801, 858, 0, 240, 244, 247, 262, 0,
> DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
> DRM_MODE_FLAG_DBLCLK),
> .vrefresh = 60, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
> @@ -714,27 +714,27 @@ static const struct drm_display_mode edid_cea_modes[] = {
> DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC |
> DRM_MODE_FLAG_INTERLACE),
> .vrefresh = 50, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
> - /* 21 - 1440x576i@50Hz */
> - { DRM_MODE("1440x576i", DRM_MODE_TYPE_DRIVER, 27000, 1440, 1464,
> - 1590, 1728, 0, 576, 580, 586, 625, 0,
> + /* 21 - 720(1440)x576i@50Hz */
> + { DRM_MODE("720x576i", DRM_MODE_TYPE_DRIVER, 13500, 720, 732,
> + 795, 864, 0, 576, 580, 586, 625, 0,
> DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
> DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK),
> .vrefresh = 50, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
> - /* 22 - 1440x576i@50Hz */
> - { DRM_MODE("1440x576i", DRM_MODE_TYPE_DRIVER, 27000, 1440, 1464,
> - 1590, 1728, 0, 576, 580, 586, 625, 0,
> + /* 22 - 720(1440)x576i@50Hz */
> + { DRM_MODE("720x576i", DRM_MODE_TYPE_DRIVER, 13500, 720, 732,
> + 795, 864, 0, 576, 580, 586, 625, 0,
> DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
> DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK),
> .vrefresh = 50, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
> - /* 23 - 1440x288@50Hz */
> - { DRM_MODE("1440x288", DRM_MODE_TYPE_DRIVER, 27000, 1440, 1464,
> - 1590, 1728, 0, 288, 290, 293, 312, 0,
> + /* 23 - 720(1440)x288@50Hz */
> + { DRM_MODE("720x288", DRM_MODE_TYPE_DRIVER, 13500, 720, 732,
> + 795, 864, 0, 288, 290, 293, 312, 0,
> DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
> DRM_MODE_FLAG_DBLCLK),
> .vrefresh = 50, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
> - /* 24 - 1440x288@50Hz */
> - { DRM_MODE("1440x288", DRM_MODE_TYPE_DRIVER, 27000, 1440, 1464,
> - 1590, 1728, 0, 288, 290, 293, 312, 0,
> + /* 24 - 720(1440)x288@50Hz */
> + { DRM_MODE("720x288", DRM_MODE_TYPE_DRIVER, 13500, 720, 732,
> + 795, 864, 0, 288, 290, 293, 312, 0,
> DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
> DRM_MODE_FLAG_DBLCLK),
> .vrefresh = 50, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
> @@ -837,17 +837,17 @@ static const struct drm_display_mode edid_cea_modes[] = {
> 796, 864, 0, 576, 581, 586, 625, 0,
> DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
> .vrefresh = 100, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
> - /* 44 - 1440x576i@100Hz */
> - { DRM_MODE("1440x576", DRM_MODE_TYPE_DRIVER, 54000, 1440, 1464,
> - 1590, 1728, 0, 576, 580, 586, 625, 0,
> + /* 44 - 720(1440)x576i@100Hz */
> + { DRM_MODE("720x576i", DRM_MODE_TYPE_DRIVER, 27000, 720, 732,
> + 795, 864, 0, 576, 580, 586, 625, 0,
> DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
> - DRM_MODE_FLAG_DBLCLK),
> + DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK),
/me actually reads through the patch this time...
So seems we were missing the interlace flag sometimes. Fixing these
should really be a separate patch.
> .vrefresh = 100, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
> - /* 45 - 1440x576i@100Hz */
> - { DRM_MODE("1440x576", DRM_MODE_TYPE_DRIVER, 54000, 1440, 1464,
> - 1590, 1728, 0, 576, 580, 586, 625, 0,
> + /* 45 - 720(1440)x576i@100Hz */
> + { DRM_MODE("720x576i", DRM_MODE_TYPE_DRIVER, 27000, 720, 732,
> + 795, 864, 0, 576, 580, 586, 625, 0,
> DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
> - DRM_MODE_FLAG_DBLCLK),
> + DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK),
> .vrefresh = 100, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
> /* 46 - 1920x1080i@120Hz */
> { DRM_MODE("1920x1080i", DRM_MODE_TYPE_DRIVER, 148500, 1920, 2008,
> @@ -870,15 +870,15 @@ static const struct drm_display_mode edid_cea_modes[] = {
> 798, 858, 0, 480, 489, 495, 525, 0,
> DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
> .vrefresh = 120, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
> - /* 50 - 1440x480i@120Hz */
> - { DRM_MODE("1440x480i", DRM_MODE_TYPE_DRIVER, 54000, 1440, 1478,
> - 1602, 1716, 0, 480, 488, 494, 525, 0,
> + /* 50 - 720(1440)x480i@120Hz */
> + { DRM_MODE("720x480i", DRM_MODE_TYPE_DRIVER, 27000, 720, 739,
> + 801, 858, 0, 480, 488, 494, 525, 0,
> DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
> DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK),
> .vrefresh = 120, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
> - /* 51 - 1440x480i@120Hz */
> - { DRM_MODE("1440x480i", DRM_MODE_TYPE_DRIVER, 54000, 1440, 1478,
> - 1602, 1716, 0, 480, 488, 494, 525, 0,
> + /* 51 - 720(1440)x480i@120Hz */
> + { DRM_MODE("720x480i", DRM_MODE_TYPE_DRIVER, 27000, 720, 739,
> + 801, 858, 0, 480, 488, 494, 525, 0,
> DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
> DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK),
> .vrefresh = 120, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
> @@ -892,15 +892,15 @@ static const struct drm_display_mode edid_cea_modes[] = {
> 796, 864, 0, 576, 581, 586, 625, 0,
> DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
> .vrefresh = 200, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
> - /* 54 - 1440x576i@200Hz */
> - { DRM_MODE("1440x576i", DRM_MODE_TYPE_DRIVER, 108000, 1440, 1464,
> - 1590, 1728, 0, 576, 580, 586, 625, 0,
> + /* 54 - 720(1440)x576i@200Hz */
> + { DRM_MODE("720x576i", DRM_MODE_TYPE_DRIVER, 54000, 720, 732,
> + 795, 864, 0, 576, 580, 586, 625, 0,
> DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
> DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK),
> .vrefresh = 200, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
> - /* 55 - 1440x576i@200Hz */
> - { DRM_MODE("1440x576i", DRM_MODE_TYPE_DRIVER, 108000, 1440, 1464,
> - 1590, 1728, 0, 576, 580, 586, 625, 0,
> + /* 55 - 720(1440)x576i@200Hz */
> + { DRM_MODE("720x576i", DRM_MODE_TYPE_DRIVER, 54000, 720, 732,
> + 795, 865, 0, 576, 580, 586, 625, 0,
> DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
> DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK),
> .vrefresh = 200, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
> @@ -914,15 +914,15 @@ static const struct drm_display_mode edid_cea_modes[] = {
> 798, 858, 0, 480, 489, 495, 525, 0,
> DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
> .vrefresh = 240, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
> - /* 58 - 1440x480i@240 */
> - { DRM_MODE("1440x480i", DRM_MODE_TYPE_DRIVER, 108000, 1440, 1478,
> - 1602, 1716, 0, 480, 488, 494, 525, 0,
> + /* 58 - 720(1440)x480i@240 */
> + { DRM_MODE("720x480i", DRM_MODE_TYPE_DRIVER, 54000, 720, 739,
> + 801, 858, 0, 480, 488, 494, 525, 0,
> DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
> DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK),
> .vrefresh = 240, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
> - /* 59 - 1440x480i@240 */
> - { DRM_MODE("1440x480i", DRM_MODE_TYPE_DRIVER, 108000, 1440, 1478,
> - 1602, 1716, 0, 480, 488, 494, 525, 0,
> + /* 59 - 720(1440)x480i@240 */
> + { DRM_MODE("720x480i", DRM_MODE_TYPE_DRIVER, 54000, 720, 739,
> + 801, 858, 0, 480, 488, 494, 525, 0,
> DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
> DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK),
> .vrefresh = 240, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
> diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
> index 9169786..c6307cb 100644
> --- a/drivers/gpu/drm/i915/intel_hdmi.c
> +++ b/drivers/gpu/drm/i915/intel_hdmi.c
> @@ -867,7 +867,11 @@ intel_hdmi_mode_valid(struct drm_connector *connector,
> if (mode->clock > hdmi_portclock_limit(intel_attached_hdmi(connector),
> true))
> return MODE_CLOCK_HIGH;
> - if (mode->clock < 20000)
> + if (mode->flags & DRM_MODE_FLAG_DBLCLK) {
> + if ((mode->clock * 2) < 20000)
^ ^
Pointless parens.
> + return MODE_CLOCK_LOW;
Indentation is messed up here.
> + }
> + else if (mode->clock < 20000)
> return MODE_CLOCK_LOW;
>
> if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
> @@ -921,6 +925,14 @@ bool intel_hdmi_compute_config(struct intel_encoder *encoder,
> intel_hdmi->color_range = 0;
> }
>
> + /* Adjust pipe timings and pixel multiplier for pixel doubled modes */
I don't think this comment is really useful. Just drop it IMO.
> + if ((adjusted_mode->flags & DRM_MODE_FLAG_DBLCLK)) {
^ ^
Pointless parens.
> + drm_mode_set_crtcinfo(adjusted_mode, 0);
This shouldn't be needed now that the original timings are halved.
> +
> + /* Set 2x pixel double on pipe */
Another comment that doesn't really do anything. Can be dropped too.
> + pipe_config->pixel_multiplier = 2;
> + }
> +
> if (intel_hdmi->color_range)
> pipe_config->limited_color_range = true;
>
> --
> 1.7.9.5
>
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/intel-gfx
--
Ville Syrjälä
Intel OTC
next prev parent reply other threads:[~2014-08-14 18:48 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-14 18:09 [PATCH] drm/edid: Reduce horizontal timings for pixel replicated modes clinton.a.taylor
2014-08-14 18:48 ` Ville Syrjälä [this message]
2014-08-18 17:29 ` Clint Taylor
-- strict thread matches above, loose matches on Subject: below --
2014-08-18 21:02 clinton.a.taylor
2014-08-19 21:21 clinton.a.taylor
2014-08-26 8:10 ` Daniel Vetter
2014-08-26 8:11 ` Daniel Vetter
2014-09-01 13:12 ` Ville Syrjälä
2014-09-01 13:17 ` Ville Syrjälä
[not found] ` <5408AAF6.2070300@intel.com>
2014-09-04 18:31 ` Daniel Vetter
2014-09-05 7:03 ` Jani Nikula
2014-09-05 8:08 ` Ville Syrjälä
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