brcm2708: rename target to bcm27xx

This change makes the names of Broadcom targets consistent by using
the common notation based on SoC/CPU ID (which is used internally
anyway), bcmXXXX instead of brcmXXXX.
This is even used for target TITLE in make menuconfig already,
only the short target name used brcm so far.

Despite, since subtargets range from bcm2708 to bcm2711, it seems
appropriate to use bcm27xx instead of bcm2708 (again, as already done
for BOARDNAME).

This also renames the packages brcm2708-userland and brcm2708-gpu-fw.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Acked-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 120 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-4.19/950-0540-drm-vc4-Probe-DPI-DSI-timings-from-the-firmware.patch b/target/linux/bcm27xx/patches-4.19/950-0540-drm-vc4-Probe-DPI-DSI-timings-from-the-firmware.patch
new file mode 100644
index 0000000000..1a27777ac7
--- /dev/null
+++ b/target/linux/bcm27xx/patches-4.19/950-0540-drm-vc4-Probe-DPI-DSI-timings-from-the-firmware.patch
@@ -0,0 +1,120 @@
+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,