diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0620-drm-vc4-fkms-to-query-the-VPU-for-HDMI-clock-limits.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.19/950-0620-drm-vc4-fkms-to-query-the-VPU-for-HDMI-clock-limits.patch | 134 |
1 files changed, 0 insertions, 134 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0620-drm-vc4-fkms-to-query-the-VPU-for-HDMI-clock-limits.patch b/target/linux/brcm2708/patches-4.19/950-0620-drm-vc4-fkms-to-query-the-VPU-for-HDMI-clock-limits.patch deleted file mode 100644 index a228910d24..0000000000 --- a/target/linux/brcm2708/patches-4.19/950-0620-drm-vc4-fkms-to-query-the-VPU-for-HDMI-clock-limits.patch +++ /dev/null @@ -1,134 +0,0 @@ -From 23e6a2c2d33050255c76a499ea080e5279d6edfc Mon Sep 17 00:00:00 2001 -From: Dave Stevenson <dave.stevenson@raspberrypi.org> -Date: Thu, 30 May 2019 13:56:15 +0100 -Subject: [PATCH 620/806] drm/vc4: fkms to query the VPU for HDMI clock limits - -The VPU has configured clocks for 4k (or not) via config.txt, -and will limit the choice of video modes based on that. -Make fkms query it for these limits too to avoid selecting modes -that can not be handled by the current clock setup. - -Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org> ---- - drivers/gpu/drm/vc4/vc4_drv.h | 1 + - drivers/gpu/drm/vc4/vc4_firmware_kms.c | 48 ++++++++++++++++++++++ - include/soc/bcm2835/raspberrypi-firmware.h | 1 + - 3 files changed, 50 insertions(+) - ---- a/drivers/gpu/drm/vc4/vc4_drv.h -+++ b/drivers/gpu/drm/vc4/vc4_drv.h -@@ -77,6 +77,7 @@ struct vc4_dev { - struct vc4_dsi *dsi1; - struct vc4_vec *vec; - struct vc4_txp *txp; -+ struct vc4_fkms *fkms; - - struct vc4_hang_state *hang_state; - ---- a/drivers/gpu/drm/vc4/vc4_firmware_kms.c -+++ b/drivers/gpu/drm/vc4/vc4_firmware_kms.c -@@ -29,6 +29,14 @@ - #include "vc_image_types.h" - #include <soc/bcm2835/raspberrypi-firmware.h> - -+struct get_display_cfg { -+ u32 max_pixel_clock[2]; //Max pixel clock for each display -+}; -+ -+struct vc4_fkms { -+ struct get_display_cfg cfg; -+}; -+ - #define PLANES_PER_CRTC 3 - - struct set_plane { -@@ -794,6 +802,11 @@ static void vc4_crtc_enable(struct drm_c - static enum drm_mode_status - vc4_crtc_mode_valid(struct drm_crtc *crtc, const struct drm_display_mode *mode) - { -+ struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc); -+ struct drm_device *dev = crtc->dev; -+ struct vc4_dev *vc4 = to_vc4_dev(dev); -+ struct vc4_fkms *fkms = vc4->fkms; -+ - /* Do not allow doublescan modes from user space */ - if (mode->flags & DRM_MODE_FLAG_DBLSCAN) { - DRM_DEBUG_KMS("[CRTC:%d] Doublescan mode rejected.\n", -@@ -801,6 +814,22 @@ vc4_crtc_mode_valid(struct drm_crtc *crt - return MODE_NO_DBLESCAN; - } - -+ /* Limit the pixel clock based on the HDMI clock limits from the -+ * firmware -+ */ -+ switch (vc4_crtc->display_number) { -+ case 2: /* HDMI0 */ -+ if (fkms->cfg.max_pixel_clock[0] && -+ mode->clock > fkms->cfg.max_pixel_clock[0]) -+ return MODE_CLOCK_HIGH; -+ break; -+ case 7: /* HDMI1 */ -+ if (fkms->cfg.max_pixel_clock[1] && -+ mode->clock > fkms->cfg.max_pixel_clock[1]) -+ return MODE_CLOCK_HIGH; -+ break; -+ } -+ - /* Limit the pixel clock until we can get dynamic HDMI 2.0 scrambling - * working. - */ -@@ -1301,11 +1330,16 @@ static int vc4_fkms_bind(struct device * - struct device_node *firmware_node; - struct vc4_crtc **crtc_list; - u32 num_displays, display_num; -+ struct vc4_fkms *fkms; - int ret; - u32 display_id; - - vc4->firmware_kms = true; - -+ fkms = devm_kzalloc(dev, sizeof(*fkms), GFP_KERNEL); -+ if (!fkms) -+ return -ENOMEM; -+ - /* firmware kms doesn't have precise a scanoutpos implementation, so - * we can't do the precise vblank timestamp mode. - */ -@@ -1334,6 +1368,18 @@ static int vc4_fkms_bind(struct device * - ret = 0; - } - -+ ret = rpi_firmware_property(vc4->firmware, -+ RPI_FIRMWARE_GET_DISPLAY_CFG, -+ &fkms->cfg, sizeof(fkms->cfg)); -+ -+ if (ret) -+ return -EINVAL; -+ /* The firmware works in Hz. This will be compared against kHz, so div -+ * 1000 now rather than multiple times later. -+ */ -+ fkms->cfg.max_pixel_clock[0] /= 1000; -+ fkms->cfg.max_pixel_clock[1] /= 1000; -+ - /* Allocate a list, with space for a NULL on the end */ - crtc_list = devm_kzalloc(dev, sizeof(crtc_list) * (num_displays + 1), - GFP_KERNEL); -@@ -1375,6 +1421,8 @@ static int vc4_fkms_bind(struct device * - DRM_WARN("No displays found. Consider forcing hotplug if HDMI is attached\n"); - } - -+ vc4->fkms = fkms; -+ - platform_set_drvdata(pdev, crtc_list); - - return 0; ---- a/include/soc/bcm2835/raspberrypi-firmware.h -+++ b/include/soc/bcm2835/raspberrypi-firmware.h -@@ -153,6 +153,7 @@ enum rpi_firmware_property_tag { - RPI_FIRMWARE_SET_PLANE = 0x00048015, - RPI_FIRMWARE_GET_DISPLAY_TIMING = 0x00040017, - RPI_FIRMWARE_SET_TIMING = 0x00048017, -+ RPI_FIRMWARE_GET_DISPLAY_CFG = 0x00040018, - - RPI_FIRMWARE_GET_COMMAND_LINE = 0x00050001, - RPI_FIRMWARE_GET_DMA_CHANNELS = 0x00060001, |