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62b7f5931c
bcm2708: boot tested on RPi B+ v1.2
bcm2709: boot tested on RPi 3B v1.2 and RPi 4B v1.1 4G
bcm2710: boot tested on RPi 3B v1.2
bcm2711: boot tested on RPi 4B v1.1 4G
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
(cherry-picked from commit f07e572f64)
182 lines
5.8 KiB
Diff
182 lines
5.8 KiB
Diff
From 6402d9c21c9b144d528c3248607589db94ecbce0 Mon Sep 17 00:00:00 2001
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From: Dave Stevenson <dave.stevenson@raspberrypi.org>
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Date: Wed, 3 Jul 2019 17:44:53 +0100
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Subject: [PATCH] drm/vc4: Query firmware for custom HDMI mode
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Allow custom HDMI modes to be specified from config.txt,
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and these then override EDID parsing.
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Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
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---
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drivers/gpu/drm/vc4/vc4_firmware_kms.c | 130 ++++++++++++++-----------
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1 file changed, 75 insertions(+), 55 deletions(-)
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--- a/drivers/gpu/drm/vc4/vc4_firmware_kms.c
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+++ b/drivers/gpu/drm/vc4/vc4_firmware_kms.c
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@@ -1066,6 +1066,56 @@ vc4_fkms_connector_detect(struct drm_con
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return connector_status_connected;
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}
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+/* Queries the firmware to populate a drm_mode structure for this display */
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+static int vc4_fkms_get_fw_mode(struct vc4_fkms_connector *fkms_connector,
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+ struct drm_display_mode *mode)
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+{
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+ struct vc4_dev *vc4 = fkms_connector->vc4_dev;
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+ struct set_timings timings = { 0 };
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+ int ret;
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+
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+ timings.display = fkms_connector->display_number;
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+
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+ ret = rpi_firmware_property(vc4->firmware,
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+ RPI_FIRMWARE_GET_DISPLAY_TIMING, &timings,
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+ sizeof(timings));
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+ if (ret || !timings.clock)
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+ /* No mode returned - abort */
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+ return -1;
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+
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+ /* Equivalent to DRM_MODE macro. */
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+ memset(mode, 0, sizeof(*mode));
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+ strncpy(mode->name, "FIXED_MODE", sizeof(mode->name));
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+ mode->status = 0;
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+ mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
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+ mode->clock = timings.clock;
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+ mode->hdisplay = timings.hdisplay;
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+ mode->hsync_start = timings.hsync_start;
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+ mode->hsync_end = timings.hsync_end;
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+ mode->htotal = timings.htotal;
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+ mode->hskew = 0;
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+ mode->vdisplay = timings.vdisplay;
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+ mode->vsync_start = timings.vsync_start;
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+ mode->vsync_end = timings.vsync_end;
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+ mode->vtotal = timings.vtotal;
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+ mode->vscan = timings.vscan;
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+
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+ if (timings.flags & TIMINGS_FLAGS_H_SYNC_POS)
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+ mode->flags |= DRM_MODE_FLAG_PHSYNC;
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+ else
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+ mode->flags |= DRM_MODE_FLAG_NHSYNC;
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+
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+ if (timings.flags & TIMINGS_FLAGS_V_SYNC_POS)
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+ mode->flags |= DRM_MODE_FLAG_PVSYNC;
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+ else
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+ mode->flags |= DRM_MODE_FLAG_NVSYNC;
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+
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+ if (timings.flags & TIMINGS_FLAGS_INTERLACE)
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+ mode->flags |= DRM_MODE_FLAG_INTERLACE;
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+
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+ return 0;
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+}
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+
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static int vc4_fkms_get_edid_block(void *data, u8 *buf, unsigned int block,
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size_t len)
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{
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@@ -1094,25 +1144,35 @@ static int vc4_fkms_connector_get_modes(
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to_vc4_fkms_connector(connector);
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struct drm_encoder *encoder = fkms_connector->encoder;
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struct vc4_fkms_encoder *vc4_encoder = to_vc4_fkms_encoder(encoder);
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- int ret = 0;
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+ struct drm_display_mode fw_mode;
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+ struct drm_display_mode *mode;
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struct edid *edid;
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+ int num_modes;
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- edid = drm_do_get_edid(connector, vc4_fkms_get_edid_block,
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- fkms_connector);
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+ if (!vc4_fkms_get_fw_mode(fkms_connector, &fw_mode)) {
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+ drm_mode_debug_printmodeline(&fw_mode);
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+ mode = drm_mode_duplicate(connector->dev,
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+ &fw_mode);
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+ drm_mode_probed_add(connector, mode);
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+ num_modes = 1; /* 1 mode */
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+ } else {
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+ edid = drm_do_get_edid(connector, vc4_fkms_get_edid_block,
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+ fkms_connector);
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- /* FIXME: Can we do CEC?
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- * cec_s_phys_addr_from_edid(vc4->hdmi->cec_adap, edid);
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- * if (!edid)
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- * return -ENODEV;
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- */
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-
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- vc4_encoder->hdmi_monitor = drm_detect_hdmi_monitor(edid);
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-
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- drm_connector_update_edid_property(connector, edid);
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- ret = drm_add_edid_modes(connector, edid);
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- kfree(edid);
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+ /* FIXME: Can we do CEC?
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+ * cec_s_phys_addr_from_edid(vc4->hdmi->cec_adap, edid);
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+ * if (!edid)
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+ * return -ENODEV;
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+ */
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+
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+ vc4_encoder->hdmi_monitor = drm_detect_hdmi_monitor(edid);
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+
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+ drm_connector_update_edid_property(connector, edid);
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+ num_modes = drm_add_edid_modes(connector, edid);
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+ kfree(edid);
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+ }
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- return ret;
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+ return num_modes;
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}
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/* This is the DSI panel resolution. Use this as a default should the firmware
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@@ -1130,55 +1190,15 @@ static int vc4_fkms_lcd_connector_get_mo
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{
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struct vc4_fkms_connector *fkms_connector =
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to_vc4_fkms_connector(connector);
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- struct vc4_dev *vc4 = fkms_connector->vc4_dev;
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struct drm_display_mode *mode;
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- struct mailbox_set_mode mb = {
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- .tag1 = { RPI_FIRMWARE_GET_DISPLAY_TIMING,
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- sizeof(struct set_timings), 0},
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- .timings = { .display = fkms_connector->display_number },
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- };
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struct drm_display_mode fw_mode;
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- int ret = 0;
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-
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- ret = rpi_firmware_property_list(vc4->firmware, &mb, sizeof(mb));
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- if (!ret) {
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- /* Equivalent to DRM_MODE macro. */
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- memset(&fw_mode, 0, sizeof(fw_mode));
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- strncpy(fw_mode.name, "LCD_MODE", sizeof(fw_mode.name));
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- fw_mode.status = 0;
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- fw_mode.type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
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- fw_mode.clock = mb.timings.clock;
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- fw_mode.hdisplay = mb.timings.hdisplay;
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- fw_mode.hsync_start = mb.timings.hsync_start;
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- fw_mode.hsync_end = mb.timings.hsync_end;
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- fw_mode.htotal = mb.timings.htotal;
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- fw_mode.hskew = 0;
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- fw_mode.vdisplay = mb.timings.vdisplay;
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- fw_mode.vsync_start = mb.timings.vsync_start;
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- fw_mode.vsync_end = mb.timings.vsync_end;
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- fw_mode.vtotal = mb.timings.vtotal;
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- fw_mode.vscan = mb.timings.vscan;
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- if (mb.timings.flags & TIMINGS_FLAGS_H_SYNC_POS)
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- fw_mode.flags |= DRM_MODE_FLAG_PHSYNC;
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- else
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- fw_mode.flags |= DRM_MODE_FLAG_NHSYNC;
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- if (mb.timings.flags & TIMINGS_FLAGS_V_SYNC_POS)
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- fw_mode.flags |= DRM_MODE_FLAG_PVSYNC;
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- else
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- fw_mode.flags |= DRM_MODE_FLAG_NVSYNC;
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- if (mb.timings.flags & TIMINGS_FLAGS_V_SYNC_POS)
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- fw_mode.flags |= DRM_MODE_FLAG_PVSYNC;
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- else
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- fw_mode.flags |= DRM_MODE_FLAG_NVSYNC;
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- if (mb.timings.flags & TIMINGS_FLAGS_INTERLACE)
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- fw_mode.flags |= DRM_MODE_FLAG_INTERLACE;
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+ if (!vc4_fkms_get_fw_mode(fkms_connector, &fw_mode) && fw_mode.clock)
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mode = drm_mode_duplicate(connector->dev,
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&fw_mode);
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- } else {
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+ else
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mode = drm_mode_duplicate(connector->dev,
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&lcd_mode);
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- }
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if (!mode) {
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DRM_ERROR("Failed to create a new display mode\n");
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