diff options
| author |   Lewis Huang <Lewis.Huang@amd.com> | 2018-10-18 17:52:19 +0800 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2018-11-05 14:21:45 -0500 |
| commit | d2b1d6bbc56afab8ebae9d52d7ca0ea3569bd600 (patch) | |
| tree | 2391c23793bd94192f277c16291dd780a2399b1d /drivers/gpu/drm/amd/display/dc/bios/bios_parser_helper.c | |
| parent | drm/amd/display: Remove the check to see if pp_display_cfg is changed (diff) | |
| download | linux-dev-d2b1d6bbc56afab8ebae9d52d7ca0ea3569bd600.tar.xz linux-dev-d2b1d6bbc56afab8ebae9d52d7ca0ea3569bd600.zip | |
drm/amd/display: Add condition to sync eDP SW status and HW status
[Why]
Need to disable EDP backlight when enter S4 with EDP only
and resume from S4 with secondary only.
[How]
Align the real hw and sw state via vBios scratch register in
function enable_accelerated_mode when resume from S4.
Signed-off-by: Lewis Huang <Lewis.Huang@amd.com>
Reviewed-by: Charlene Liu <Charlene.Liu@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/bios/bios_parser_helper.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/bios/bios_parser_helper.c | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/bios/bios_parser_helper.c b/drivers/gpu/drm/amd/display/dc/bios/bios_parser_helper.c index d4589470985c..fdda8aa8e303 100644 --- a/drivers/gpu/drm/amd/display/dc/bios/bios_parser_helper.c +++ b/drivers/gpu/drm/amd/display/dc/bios/bios_parser_helper.c @@ -88,3 +88,96 @@ uint32_t bios_get_vga_enabled_displays( return active_disp; } +bool bios_is_active_display( + struct dc_bios *bios, + enum signal_type signal, + const struct connector_device_tag_info *device_tag) +{ + uint32_t active = 0; + uint32_t connected = 0; + uint32_t bios_scratch_0 = 0; + uint32_t bios_scratch_3 = 0; + + switch (signal) { + case SIGNAL_TYPE_DVI_SINGLE_LINK: + case SIGNAL_TYPE_DVI_DUAL_LINK: + case SIGNAL_TYPE_HDMI_TYPE_A: + case SIGNAL_TYPE_DISPLAY_PORT: + case SIGNAL_TYPE_DISPLAY_PORT_MST: + { + if (device_tag->dev_id.device_type == DEVICE_TYPE_DFP) { + switch (device_tag->dev_id.enum_id) { + case 1: + { + active = ATOM_S3_DFP1_ACTIVE; + connected = 0x0008; //ATOM_DISPLAY_DFP1_CONNECT + } + break; + + case 2: + { + active = ATOM_S3_DFP2_ACTIVE; + connected = 0x0080; //ATOM_DISPLAY_DFP2_CONNECT + } + break; + + case 3: + { + active = ATOM_S3_DFP3_ACTIVE; + connected = 0x0200; //ATOM_DISPLAY_DFP3_CONNECT + } + break; + + case 4: + { + active = ATOM_S3_DFP4_ACTIVE; + connected = 0x0400; //ATOM_DISPLAY_DFP4_CONNECT + } + break; + + case 5: + { + active = ATOM_S3_DFP5_ACTIVE; + connected = 0x0800; //ATOM_DISPLAY_DFP5_CONNECT + } + break; + + case 6: + { + active = ATOM_S3_DFP6_ACTIVE; + connected = 0x0040; //ATOM_DISPLAY_DFP6_CONNECT + } + break; + + default: + break; + } + } + } + break; + + case SIGNAL_TYPE_LVDS: + case SIGNAL_TYPE_EDP: + { + active = ATOM_S3_LCD1_ACTIVE; + connected = 0x0002; //ATOM_DISPLAY_LCD1_CONNECT + } + break; + + default: + break; + } + + + if (bios->regs->BIOS_SCRATCH_0) /*follow up with other asic, todo*/ + bios_scratch_0 = REG_READ(BIOS_SCRATCH_0); + if (bios->regs->BIOS_SCRATCH_3) /*follow up with other asic, todo*/ + bios_scratch_3 = REG_READ(BIOS_SCRATCH_3); + + bios_scratch_3 &= ATOM_S3_DEVICE_ACTIVE_MASK; + if ((active & bios_scratch_3) && (connected & bios_scratch_0)) + return true; + + return false; +} + |