change otg to host mode

hc

2024-05-11 04dd17822334871b23ea2862f7798fb0e0007777

 u-boot/drivers/video/drm/rockchip_panel.c
..
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@@ -12,6 +12,7 @@
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 #include <malloc.h>
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 #include <video.h>
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 #include <backlight.h>
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+#include <spi.h>
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 #include <asm/gpio.h>
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 #include <dm/device.h>
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 #include <dm/read.h>
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@@ -65,6 +66,7 @@
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 	bool enabled;
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 	struct udevice *power_supply;
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 	struct udevice *backlight;
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+	struct spi_slave *spi_slave;
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 	struct gpio_desc enable_gpio;
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 	struct gpio_desc reset_gpio;
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 	struct gpio_desc edp_bl_on;
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@@ -197,24 +199,48 @@
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 {
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 	struct rockchip_panel_priv *priv = dev_get_priv(panel->dev);
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 	int i;
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+	int ret;
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 	if (!cmds)
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 		return -EINVAL;
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206
 
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+	if (priv->spi_slave) {
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+		ret = spi_claim_bus(priv->spi_slave);
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+		if (ret) {
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+			printf("%s: Failed to claim spi bus: %d\n", __func__, ret);
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+			return -EINVAL;
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+		}
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+	}
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+
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 	for (i = 0; i < cmds->cmd_cnt; i++) {
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 		struct rockchip_cmd_desc *desc = &cmds->cmds[i];
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 		int value = 0;
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+		u16 mask = 0;
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+		u16 data = 0;
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-		if (desc->header.payload_length == 2)
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-			value = (desc->payload[0] << 8) | desc->payload[1];
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-		else
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-			value = desc->payload[0];
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-		rockchip_panel_write_spi_cmds(priv,
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-					      desc->header.data_type, value);
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+		if (priv->spi_slave) {
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+			mask = desc->header.data_type ? 0x100 : 0;
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+			data = (mask | desc->payload[0]) << 7;;
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+			data = ((data & 0xff) << 8) | (data >> 8);
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+			value = mask | desc->payload[0];
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+			ret = spi_xfer(priv->spi_slave, 9, &data, NULL, SPI_XFER_ONCE);
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+			if (ret)
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+				printf("%s: Failed to xfer spi cmd 0x%x: %d\n",
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+				       __func__, desc->payload[0], ret);
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+		} else {
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+			if (desc->header.payload_length == 2)
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+				value = (desc->payload[0] << 8) | desc->payload[1];
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+			else
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+				value = desc->payload[0];
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+			rockchip_panel_write_spi_cmds(priv, desc->header.data_type, value);
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+		}
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 		if (desc->header.delay_ms)
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 			mdelay(desc->header.delay_ms);
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 	}
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+
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+	if (priv->spi_slave)
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+		spi_release_bus(priv->spi_slave);
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 	return 0;
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 }
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@@ -336,21 +362,24 @@
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 	if (dm_gpio_is_valid(&priv->edp_bl_en))
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 		dm_gpio_set_value(&priv->edp_bl_en, 1);
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-	
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+
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 	if (dm_gpio_is_valid(&priv->enable_gpio))
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 		dm_gpio_set_value(&priv->enable_gpio, 1);
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-	
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+
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 	if (plat->delay.prepare)
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 		mdelay(plat->delay.prepare);
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-	
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+
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 	if (dm_gpio_is_valid(&priv->reset_gpio))
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 		dm_gpio_set_value(&priv->reset_gpio, 1);
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+
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+	if (plat->delay.reset)
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+		mdelay(plat->delay.reset);
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 	mdelay(50);
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 	if (dm_gpio_is_valid(&priv->reset_gpio))
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 		dm_gpio_set_value(&priv->reset_gpio, 0);
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-			
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-	mdelay(200);
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+	mdelay(200);
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+	
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 	if (plat->delay.init)
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 		mdelay(plat->delay.init);
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385
 
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@@ -556,7 +585,7 @@
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 		printf("%s: Cannot get reset GPIO: %d\n", __func__, ret);
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 		return ret;
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 	}
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-
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+	
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 	ret = gpio_request_by_name(dev, "lvds-gpio0", 0,
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 				   &priv->lvds_gpio0, GPIOD_IS_OUT);
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 	if (ret && ret != -ENOENT) {
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@@ -584,7 +613,7 @@
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 		printf("%s: Cannot get lvds-gpio3: %d\n", __func__, ret);
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 		return ret;
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 	}
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-	
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+
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 	ret = uclass_get_device_by_phandle(UCLASS_PANEL_BACKLIGHT, dev,
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 					   "backlight", &priv->backlight);
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 	if (ret && ret != -ENOENT) {
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@@ -606,31 +635,47 @@
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 		priv->cmd_type = get_panel_cmd_type(cmd_type);
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636
 
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 	if (priv->cmd_type == CMD_TYPE_SPI) {
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-		ret = gpio_request_by_name(dev, "spi-sdi-gpios", 0,
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-					   &priv->spi_sdi_gpio, GPIOD_IS_OUT);
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-		if (ret && ret != -ENOENT) {
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-			printf("%s: Cannot get spi sdi GPIO: %d\n",
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-			       __func__, ret);
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-			return ret;
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+		ofnode parent = ofnode_get_parent(dev->node);
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+
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+		if (ofnode_valid(parent)) {
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+			struct dm_spi_slave_platdata *plat = dev_get_parent_platdata(dev);
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+			struct udevice *spi = dev_get_parent(dev);
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+
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+			if (spi->seq < 0) {
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+				printf("%s: Failed to get spi bus num\n", __func__);
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+				return -EINVAL;
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+			}
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+
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+			priv->spi_slave = spi_setup_slave(spi->seq, plat->cs, plat->max_hz,
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+							  plat->mode);
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+			if (!priv->spi_slave) {
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+				printf("%s: Failed to setup spi slave: %d\n", __func__, ret);
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+				return -EINVAL;
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+			}
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+		} else {
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+			ret = gpio_request_by_name(dev, "spi-sdi-gpios", 0,
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+						   &priv->spi_sdi_gpio, GPIOD_IS_OUT);
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+			if (ret && ret != -ENOENT) {
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+				printf("%s: Cannot get spi sdi GPIO: %d\n", __func__, ret);
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+				return ret;
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+			}
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+			ret = gpio_request_by_name(dev, "spi-scl-gpios", 0,
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+						   &priv->spi_scl_gpio, GPIOD_IS_OUT);
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+			if (ret && ret != -ENOENT) {
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+				printf("%s: Cannot get spi scl GPIO: %d\n", __func__, ret);
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+				return ret;
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+			}
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+			ret = gpio_request_by_name(dev, "spi-cs-gpios", 0,
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+						   &priv->spi_cs_gpio, GPIOD_IS_OUT);
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+			if (ret && ret != -ENOENT) {
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+				printf("%s: Cannot get spi cs GPIO: %d\n", __func__, ret);
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+				return ret;
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+			}
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+			dm_gpio_set_value(&priv->spi_sdi_gpio, 1);
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+			dm_gpio_set_value(&priv->spi_scl_gpio, 1);
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+			dm_gpio_set_value(&priv->spi_cs_gpio, 1);
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+			dm_gpio_set_value(&priv->reset_gpio, 0);
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 		}
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-		ret = gpio_request_by_name(dev, "spi-scl-gpios", 0,
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-					   &priv->spi_scl_gpio, GPIOD_IS_OUT);
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-		if (ret && ret != -ENOENT) {
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-			printf("%s: Cannot get spi scl GPIO: %d\n",
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-			       __func__, ret);
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-			return ret;
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-		}
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-		ret = gpio_request_by_name(dev, "spi-cs-gpios", 0,
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-					   &priv->spi_cs_gpio, GPIOD_IS_OUT);
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-		if (ret && ret != -ENOENT) {
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-			printf("%s: Cannot get spi cs GPIO: %d\n",
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-			       __func__, ret);
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-			return ret;
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-		}
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-		dm_gpio_set_value(&priv->spi_sdi_gpio, 1);
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-		dm_gpio_set_value(&priv->spi_scl_gpio, 1);
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-		dm_gpio_set_value(&priv->spi_cs_gpio, 1);
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-		dm_gpio_set_value(&priv->reset_gpio, 0);
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 	}
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 	panel = calloc(1, sizeof(*panel));
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@@ -649,6 +694,7 @@
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 static const struct udevice_id rockchip_panel_ids[] = {
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 	{ .compatible = "simple-panel", },
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 	{ .compatible = "simple-panel-dsi", },
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+	{ .compatible = "simple-panel-spi", },
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 	{}
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 };
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