[coreboot-gerrit] Change in coreboot[master]: WIP: coreboot: Add display code

[yongqiang niu (Code Review)]

yongqiang niu has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/46578 )

Change subject: WIP: coreboot: Add display code
......................................................................

WIP: coreboot: Add display code

Add display init code to support display

Signed-off-by: Huijuan Xie 
Change-Id: If730c42451f7b392285df686abc4ca252d8d42cf
---
M src/mainboard/google/asurada/mainboard.c
1 file changed, 103 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/78/46578/1

diff --git a/src/mainboard/google/asurada/mainboard.c b/src/mainboard/google/asurada/mainboard.c
index 677e917..30e98e8 100644
--- a/src/mainboard/google/asurada/mainboard.c
+++ b/src/mainboard/google/asurada/mainboard.c
@@ -1,16 +1,27 @@
 /* SPDX-License-Identifier: GPL-2.0-only */

+#include <assert.h>
 #include <bl31.h>
+#include <boardid.h>
+#include <bootmode.h>
 #include <console/console.h>
+#include <delay.h>
 #include <device/device.h>
 #include <device/mmio.h>
+#include <edid.h>
+#include <gpio.h>
 #include <lib.h>
+#include <soc/ddp.h>
+#include <soc/dsi.h>
 #include <soc/dpm.h>
+#include <soc/gpio.h>
 #include <soc/gpio_common.h>
+#include <soc/mtcmos.h>
 #include <soc/spm.h>
 #include <soc/usb.h>

#include "gpio.h"
+#include "panel.h"

#include <arm-trusted-firmware/include/export/plat/mediatek/common/plat_params_exp.h>

@@ -34,10 +45,102 @@
    register_bl31_aux_param(&param_reset.h);
 }

+/* Default implementation for boards without panels defined yet. */
+struct panel_description __weak *get_panel_description(int panel_id)
+{
+	printk(BIOS_ERR, "%s: ERROR: No panels defined for board: %s.\n",
+	       __func__, CONFIG_MAINBOARD_PART_NUMBER);
+	return NULL;
+}
+
+/* Set up backlight control pins as output pin and power-off by default */
+static void configure_panel_backlight(void)
+{
+	gpio_output(GPIO(KPROW1), 0);
+	gpio_output(GPIO(DISP_PWM), 0);
+}
+
+static void power_on_panel(struct panel_description *panel)
+{
+	if (panel->power_on) {
+		panel->power_on();
+		return;
+	}
+
+	/* Default power sequence for most panels. */
+	gpio_output(GPIO_MIPIBRDG_RST_L_1V8, 0);
+	mdelay(6);
+	gpio_output(GPIO_MIPIBRDG_RST_L_1V8, 1);
+	mdelay(6);
+}
+
+static struct panel_description *get_active_panel(void)
+{
+	/* TODO(hungte) Create a dedicated panel_id() in board_id.c */
+	int panel_id = sku_id() >> 4;
+
+	struct panel_description *panel = get_panel_description(panel_id);
+	if (!panel) {
+		printk(BIOS_ERR, "%s: Panel %d is not supported.\n",
+		       __func__, panel_id);
+		return NULL;
+	}
+	assert(panel->s);
+
+	const struct edid *edid = &panel->s->edid;
+	const char *name = edid->ascii_string;
+	if (name[0] == '\0')
+		name = "unknown name";
+	printk(BIOS_INFO, "%s: Found ID %d: '%s %s' %dx%d@%dHz\n", __func__,
+	       panel_id, edid->manufacturer_name, name, edid->mode.ha,
+	       edid->mode.va, edid->mode.refresh);
+	return panel;
+}
+
+static bool configure_display(void)
+{
+	struct panel_description *panel = get_active_panel();
+	if (!panel)
+		return false;
+
+	mtcmos_display_power_on();
+	mtcmos_protect_display_bus();
+	configure_panel_backlight();
+	power_on_panel(panel);
+
+	struct edid *edid = &panel->s->edid;
+	edid_set_framebuffer_bits_per_pixel(edid, 32, 0);
+	mtk_ddp_init();
+	u32 mipi_dsi_flags = (MIPI_DSI_MODE_VIDEO |
+			      MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
+			      MIPI_DSI_MODE_LPM);
+	if (CONFIG(DRIVER_ANALOGIX_ANX7625))
+		mipi_dsi_flags |= MIPI_DSI_MODE_EOT_PACKET;
+	if (mtk_dsi_init(mipi_dsi_flags, MIPI_DSI_FMT_RGB888, 4, edid,
+			 panel->s->init) < 0) {
+		printk(BIOS_ERR, "%s: Failed in DSI init.\n", __func__);
+		return false;
+	}
+	mtk_ddp_mode_set(edid);
+	set_vbe_mode_info_valid(edid, 0);
+	set_vbe_framebuffer_orientation(panel->s->orientation);
+	return true;
+}
+
 static void mainboard_init(struct device *dev)
 {
    int i;

+	if (display_init_required()) {
+		printk(BIOS_INFO, "%s: Starting display init.\n", __func__);
+		if (!configure_display())
+			printk(BIOS_ERR, "%s: Failed to init display.\n",
+			       __func__);
+	} else {
+		printk(BIOS_INFO, "%s: Skipped display init.\n", __func__);
+	}
+
+
    /* HACK, set pinctrl for SD card */
    for (i = 51; i <= 56; i++)
    	gpio_set_mode((gpio_t){.id = i}, 1);