diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0524-drm-vc4-Query-the-display-ID-for-each-display-in-FKM.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.19/950-0524-drm-vc4-Query-the-display-ID-for-each-display-in-FKM.patch | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0524-drm-vc4-Query-the-display-ID-for-each-display-in-FKM.patch b/target/linux/brcm2708/patches-4.19/950-0524-drm-vc4-Query-the-display-ID-for-each-display-in-FKM.patch new file mode 100644 index 0000000000..1c349449c5 --- /dev/null +++ b/target/linux/brcm2708/patches-4.19/950-0524-drm-vc4-Query-the-display-ID-for-each-display-in-FKM.patch @@ -0,0 +1,58 @@ +From 13723c680a129d79a7872ee131c0201374ba62ce Mon Sep 17 00:00:00 2001 +From: Dave Stevenson <dave.stevenson@raspberrypi.org> +Date: Tue, 9 Apr 2019 12:37:28 +0100 +Subject: [PATCH] drm: vc4: Query the display ID for each display in + FKMS + +Replace the hard coded list of display IDs for a mailbox call +that returns the display ID for each display that has been +detected. + +Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org> +--- + drivers/gpu/drm/vc4/vc4_firmware_kms.c | 16 +++++++++++++--- + include/soc/bcm2835/raspberrypi-firmware.h | 1 + + 2 files changed, 14 insertions(+), 3 deletions(-) + +--- a/drivers/gpu/drm/vc4/vc4_firmware_kms.c ++++ b/drivers/gpu/drm/vc4/vc4_firmware_kms.c +@@ -943,7 +943,7 @@ static int vc4_fkms_bind(struct device * + struct vc4_crtc **crtc_list; + u32 num_displays, display_num; + int ret; +- const u32 display_num_lookup[] = {2, 7, 1}; ++ u32 display_id; + + vc4->firmware_kms = true; + +@@ -982,8 +982,18 @@ static int vc4_fkms_bind(struct device * + return -ENOMEM; + + for (display_num = 0; display_num < num_displays; display_num++) { +- ret = vc4_fkms_create_screen(dev, drm, display_num, +- display_num_lookup[display_num], ++ display_id = display_num; ++ ret = rpi_firmware_property(vc4->firmware, ++ RPI_FIRMWARE_FRAMEBUFFER_GET_DISPLAY_ID, ++ &display_id, sizeof(display_id)); ++ /* FIXME: Determine the correct error handling here. ++ * Should we fail to create the one "screen" but keep the ++ * others, or fail the whole thing? ++ */ ++ if (ret) ++ DRM_ERROR("Failed to get display id %u\n", display_num); ++ ++ ret = vc4_fkms_create_screen(dev, drm, display_num, display_id, + &crtc_list[display_num]); + if (ret) + DRM_ERROR("Oh dear, failed to create display %u\n", +--- a/include/soc/bcm2835/raspberrypi-firmware.h ++++ b/include/soc/bcm2835/raspberrypi-firmware.h +@@ -117,6 +117,7 @@ enum rpi_firmware_property_tag { + RPI_FIRMWARE_FRAMEBUFFER_GET_TOUCHBUF = 0x0004000f, + RPI_FIRMWARE_FRAMEBUFFER_GET_GPIOVIRTBUF = 0x00040010, + RPI_FIRMWARE_FRAMEBUFFER_RELEASE = 0x00048001, ++ RPI_FIRMWARE_FRAMEBUFFER_GET_DISPLAY_ID = 0x00040016, + RPI_FIRMWARE_FRAMEBUFFER_SET_DISPLAY_NUM = 0x00048013, + RPI_FIRMWARE_FRAMEBUFFER_GET_NUM_DISPLAYS = 0x00040013, + RPI_FIRMWARE_FRAMEBUFFER_GET_DISPLAY_SETTINGS = 0x00040014, |