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drm/i915: Parsing the PWM cntrl and CABC ON/OFF fields in VBT

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For dual link panel scenarios there are new fields added in the
VBT which indicate on which port the PWM cntrl and CABC ON/OFF
commands needs to be sent.

v2: Moving the comment to intel_dsi.h(Jani)

v3: Renaming the field names (Jani)

v4 by Jani: make this patch only about VBT

Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Cc: Yetunde Adebisi <yetundex.adebisi@intel.com>
Signed-off-by: Deepak M <m.deepak@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1459346623-30752-2-git-send-email-jani.nikula@intel.com
This commit is contained in:
Deepak M 2016-03-30 17:03:40 +03:00 committed by Jani Nikula
parent e7156c8339
commit 9f7c5b1730
2 changed files with 17 additions and 1 deletions
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10
drivers/gpu/drm/i915/intel_bios.c
View File

@ -763,6 +763,16 @@ parse_mipi_config(struct drm_i915_private *dev_priv,
return;
}
/*
* These fields are introduced from the VBT version 197 onwards,
* so making sure that these bits are set zero in the previous
* versions.
*/
if (dev_priv->vbt.dsi.config->dual_link && bdb->version < 197) {
dev_priv->vbt.dsi.config->dl_dcs_cabc_ports = 0;
dev_priv->vbt.dsi.config->dl_dcs_backlight_ports = 0;
}
/* We have mandatory mipi config blocks. Initialize as generic panel */
dev_priv->vbt.dsi.panel_id = MIPI_DSI_GENERIC_PANEL_ID;
}

8
drivers/gpu/drm/i915/intel_bios.h
View File

@ -113,7 +113,13 @@ struct mipi_config {
u16 dual_link:2;
u16 lane_cnt:2;
u16 pixel_overlap:3;
u16 rsvd3:9;
u16 rgb_flip:1;
#define DL_DCS_PORT_A 0x00
#define DL_DCS_PORT_C 0x01
#define DL_DCS_PORT_A_AND_C 0x02
u16 dl_dcs_cabc_ports:2;
u16 dl_dcs_backlight_ports:2;
u16 rsvd3:4;
u16 rsvd4;