diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0275-drm-vc4-Query-firmware-for-custom-HDMI-mode.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0275-drm-vc4-Query-firmware-for-custom-HDMI-mode.patch | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0275-drm-vc4-Query-firmware-for-custom-HDMI-mode.patch b/target/linux/bcm27xx/patches-5.4/950-0275-drm-vc4-Query-firmware-for-custom-HDMI-mode.patch new file mode 100644 index 0000000000..b5358cef29 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0275-drm-vc4-Query-firmware-for-custom-HDMI-mode.patch @@ -0,0 +1,181 @@ +From 6402d9c21c9b144d528c3248607589db94ecbce0 Mon Sep 17 00:00:00 2001 +From: Dave Stevenson <dave.stevenson@raspberrypi.org> +Date: Wed, 3 Jul 2019 17:44:53 +0100 +Subject: [PATCH] drm/vc4: Query firmware for custom HDMI mode + +Allow custom HDMI modes to be specified from config.txt, +and these then override EDID parsing. + +Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org> +--- + drivers/gpu/drm/vc4/vc4_firmware_kms.c | 130 ++++++++++++++----------- + 1 file changed, 75 insertions(+), 55 deletions(-) + +--- a/drivers/gpu/drm/vc4/vc4_firmware_kms.c ++++ b/drivers/gpu/drm/vc4/vc4_firmware_kms.c +@@ -1066,6 +1066,56 @@ vc4_fkms_connector_detect(struct drm_con + return connector_status_connected; + } + ++/* Queries the firmware to populate a drm_mode structure for this display */ ++static int vc4_fkms_get_fw_mode(struct vc4_fkms_connector *fkms_connector, ++ struct drm_display_mode *mode) ++{ ++ struct vc4_dev *vc4 = fkms_connector->vc4_dev; ++ struct set_timings timings = { 0 }; ++ int ret; ++ ++ timings.display = fkms_connector->display_number; ++ ++ ret = rpi_firmware_property(vc4->firmware, ++ RPI_FIRMWARE_GET_DISPLAY_TIMING, &timings, ++ sizeof(timings)); ++ if (ret || !timings.clock) ++ /* No mode returned - abort */ ++ return -1; ++ ++ /* Equivalent to DRM_MODE macro. */ ++ memset(mode, 0, sizeof(*mode)); ++ strncpy(mode->name, "FIXED_MODE", sizeof(mode->name)); ++ mode->status = 0; ++ mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; ++ mode->clock = timings.clock; ++ mode->hdisplay = timings.hdisplay; ++ mode->hsync_start = timings.hsync_start; ++ mode->hsync_end = timings.hsync_end; ++ mode->htotal = timings.htotal; ++ mode->hskew = 0; ++ mode->vdisplay = timings.vdisplay; ++ mode->vsync_start = timings.vsync_start; ++ mode->vsync_end = timings.vsync_end; ++ mode->vtotal = timings.vtotal; ++ mode->vscan = timings.vscan; ++ ++ if (timings.flags & TIMINGS_FLAGS_H_SYNC_POS) ++ mode->flags |= DRM_MODE_FLAG_PHSYNC; ++ else ++ mode->flags |= DRM_MODE_FLAG_NHSYNC; ++ ++ if (timings.flags & TIMINGS_FLAGS_V_SYNC_POS) ++ mode->flags |= DRM_MODE_FLAG_PVSYNC; ++ else ++ mode->flags |= DRM_MODE_FLAG_NVSYNC; ++ ++ if (timings.flags & TIMINGS_FLAGS_INTERLACE) ++ mode->flags |= DRM_MODE_FLAG_INTERLACE; ++ ++ return 0; ++} ++ + static int vc4_fkms_get_edid_block(void *data, u8 *buf, unsigned int block, + size_t len) + { +@@ -1094,25 +1144,35 @@ static int vc4_fkms_connector_get_modes( + to_vc4_fkms_connector(connector); + struct drm_encoder *encoder = fkms_connector->encoder; + struct vc4_fkms_encoder *vc4_encoder = to_vc4_fkms_encoder(encoder); +- int ret = 0; ++ struct drm_display_mode fw_mode; ++ struct drm_display_mode *mode; + struct edid *edid; ++ int num_modes; + +- edid = drm_do_get_edid(connector, vc4_fkms_get_edid_block, +- fkms_connector); ++ if (!vc4_fkms_get_fw_mode(fkms_connector, &fw_mode)) { ++ drm_mode_debug_printmodeline(&fw_mode); ++ mode = drm_mode_duplicate(connector->dev, ++ &fw_mode); ++ drm_mode_probed_add(connector, mode); ++ num_modes = 1; /* 1 mode */ ++ } else { ++ edid = drm_do_get_edid(connector, vc4_fkms_get_edid_block, ++ fkms_connector); + +- /* FIXME: Can we do CEC? +- * cec_s_phys_addr_from_edid(vc4->hdmi->cec_adap, edid); +- * if (!edid) +- * return -ENODEV; +- */ +- +- vc4_encoder->hdmi_monitor = drm_detect_hdmi_monitor(edid); +- +- drm_connector_update_edid_property(connector, edid); +- ret = drm_add_edid_modes(connector, edid); +- kfree(edid); ++ /* FIXME: Can we do CEC? ++ * cec_s_phys_addr_from_edid(vc4->hdmi->cec_adap, edid); ++ * if (!edid) ++ * return -ENODEV; ++ */ ++ ++ vc4_encoder->hdmi_monitor = drm_detect_hdmi_monitor(edid); ++ ++ drm_connector_update_edid_property(connector, edid); ++ num_modes = drm_add_edid_modes(connector, edid); ++ kfree(edid); ++ } + +- return ret; ++ return num_modes; + } + + /* This is the DSI panel resolution. Use this as a default should the firmware +@@ -1130,55 +1190,15 @@ static int vc4_fkms_lcd_connector_get_mo + { + struct vc4_fkms_connector *fkms_connector = + to_vc4_fkms_connector(connector); +- struct vc4_dev *vc4 = fkms_connector->vc4_dev; + struct drm_display_mode *mode; +- struct mailbox_set_mode mb = { +- .tag1 = { RPI_FIRMWARE_GET_DISPLAY_TIMING, +- sizeof(struct set_timings), 0}, +- .timings = { .display = fkms_connector->display_number }, +- }; + struct drm_display_mode fw_mode; +- int ret = 0; +- +- ret = rpi_firmware_property_list(vc4->firmware, &mb, sizeof(mb)); +- if (!ret) { +- /* Equivalent to DRM_MODE macro. */ +- memset(&fw_mode, 0, sizeof(fw_mode)); +- strncpy(fw_mode.name, "LCD_MODE", sizeof(fw_mode.name)); +- fw_mode.status = 0; +- fw_mode.type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; +- fw_mode.clock = mb.timings.clock; +- fw_mode.hdisplay = mb.timings.hdisplay; +- fw_mode.hsync_start = mb.timings.hsync_start; +- fw_mode.hsync_end = mb.timings.hsync_end; +- fw_mode.htotal = mb.timings.htotal; +- fw_mode.hskew = 0; +- fw_mode.vdisplay = mb.timings.vdisplay; +- fw_mode.vsync_start = mb.timings.vsync_start; +- fw_mode.vsync_end = mb.timings.vsync_end; +- fw_mode.vtotal = mb.timings.vtotal; +- fw_mode.vscan = mb.timings.vscan; +- if (mb.timings.flags & TIMINGS_FLAGS_H_SYNC_POS) +- fw_mode.flags |= DRM_MODE_FLAG_PHSYNC; +- else +- fw_mode.flags |= DRM_MODE_FLAG_NHSYNC; +- if (mb.timings.flags & TIMINGS_FLAGS_V_SYNC_POS) +- fw_mode.flags |= DRM_MODE_FLAG_PVSYNC; +- else +- fw_mode.flags |= DRM_MODE_FLAG_NVSYNC; +- if (mb.timings.flags & TIMINGS_FLAGS_V_SYNC_POS) +- fw_mode.flags |= DRM_MODE_FLAG_PVSYNC; +- else +- fw_mode.flags |= DRM_MODE_FLAG_NVSYNC; +- if (mb.timings.flags & TIMINGS_FLAGS_INTERLACE) +- fw_mode.flags |= DRM_MODE_FLAG_INTERLACE; + ++ if (!vc4_fkms_get_fw_mode(fkms_connector, &fw_mode) && fw_mode.clock) + mode = drm_mode_duplicate(connector->dev, + &fw_mode); +- } else { ++ else + mode = drm_mode_duplicate(connector->dev, + &lcd_mode); +- } + + if (!mode) { + DRM_ERROR("Failed to create a new display mode\n"); |