+++ /dev/null
-From b4ffa49d762a4af832d0d8660caf59722c0ff75a Mon Sep 17 00:00:00 2001
-From: Dave Stevenson <dave.stevenson@raspberrypi.org>
-Date: Tue, 21 May 2019 11:50:00 +0100
-Subject: [PATCH] drm: vc4: Probe DPI/DSI timings from the firmware
-
-For DPI and DSI displays query the firmware as to the configuration
-and add it as the only mode for DRM.
-
-In theory we can add plumbing for setting the DPI/DSI mode from
-KMS, but this is not being added at present as the support frameworks
-aren't present in the firmware.
-
-Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
----
- drivers/gpu/drm/vc4/vc4_firmware_kms.c | 60 ++++++++++++++++++----
- include/soc/bcm2835/raspberrypi-firmware.h | 1 +
- 2 files changed, 51 insertions(+), 10 deletions(-)
-
---- a/drivers/gpu/drm/vc4/vc4_firmware_kms.c
-+++ b/drivers/gpu/drm/vc4/vc4_firmware_kms.c
-@@ -280,7 +280,7 @@ static u32 vc4_get_display_type(u32 disp
- /* The firmware display (DispmanX) IDs map to specific types in
- * a fixed manner.
- */
-- DRM_MODE_ENCODER_DSI, /* MAIN_LCD */
-+ DRM_MODE_ENCODER_DSI, /* MAIN_LCD - DSI or DPI */
- DRM_MODE_ENCODER_DSI, /* AUX_LCD */
- DRM_MODE_ENCODER_TMDS, /* HDMI0 */
- DRM_MODE_ENCODER_TVDAC, /* VEC */
-@@ -362,7 +362,6 @@ static void vc4_plane_atomic_update(stru
- vc4_get_vc_image_fmt(drm_fmt->format);
- struct vc4_fkms_plane *vc4_plane = to_vc4_fkms_plane(plane);
- struct mailbox_set_plane *mb = &vc4_plane->mb;
-- struct vc4_crtc *vc4_crtc = to_vc4_crtc(state->crtc);
- int num_planes = fb->format->num_planes;
- struct drm_display_mode *mode = &state->crtc->mode;
- unsigned int rotation = SUPPORTED_ROTATIONS;
-@@ -997,7 +996,9 @@ static int vc4_fkms_connector_get_modes(
- return ret;
- }
-
--/* FIXME: Read LCD mode from the firmware. This is the DSI panel resolution. */
-+/* This is the DSI panel resolution. Use this as a default should the firmware
-+ * not respond to our request for the timings.
-+ */
- static const struct drm_display_mode lcd_mode = {
- DRM_MODE("800x480", DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
- 25979400 / 1000,
-@@ -1008,15 +1009,54 @@ static const struct drm_display_mode lcd
-
- static int vc4_fkms_lcd_connector_get_modes(struct drm_connector *connector)
- {
-- //struct vc4_fkms_connector *fkms_connector =
-- // to_vc4_fkms_connector(connector);
-- //struct drm_encoder *encoder = fkms_connector->encoder;
-- //struct vc4_fkms_encoder *vc4_encoder = to_vc4_fkms_encoder(encoder);
-+ struct vc4_fkms_connector *fkms_connector =
-+ to_vc4_fkms_connector(connector);
-+ struct vc4_dev *vc4 = fkms_connector->vc4_dev;
- struct drm_display_mode *mode;
-- //int ret = 0;
-+ 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;
-+
-+ fw_mode.base.type = DRM_MODE_OBJECT_MODE;
-+
-+ mode = drm_mode_duplicate(connector->dev,
-+ &fw_mode);
-+ } else {
-+ mode = drm_mode_duplicate(connector->dev,
-+ &lcd_mode);
-+ }
-
-- mode = drm_mode_duplicate(connector->dev,
-- &lcd_mode);
- if (!mode) {
- DRM_ERROR("Failed to create a new display mode\n");
- return -ENOMEM;
---- a/include/soc/bcm2835/raspberrypi-firmware.h
-+++ b/include/soc/bcm2835/raspberrypi-firmware.h
-@@ -151,6 +151,7 @@ enum rpi_firmware_property_tag {
- RPI_FIRMWARE_VCHIQ_INIT = 0x00048010,
-
- RPI_FIRMWARE_SET_PLANE = 0x00048015,
-+ RPI_FIRMWARE_GET_DISPLAY_TIMING = 0x00040017,
- RPI_FIRMWARE_SET_TIMING = 0x00048017,
-
- RPI_FIRMWARE_GET_COMMAND_LINE = 0x00050001,
projects / openwrt / staging / chunkeey.git / blobdiff