GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

2026-09-06 03:52:57 +08:00
commit b1928b41c0
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+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2012 Freescale Semiconductor, Inc.
+ * Fabio Estevam <fabio.estevam@freescale.com>
+ */
+
+#include <common.h>
+#include <env.h>
+#include <linux/list.h>
+#include <asm/gpio.h>
+#include <asm/arch/iomux-mx51.h>
+#include <linux/fb.h>
+#include <ipu_pixfmt.h>
+
+#define MX51EVK_LCD_3V3		IMX_GPIO_NR(4, 9)
+#define MX51EVK_LCD_5V		IMX_GPIO_NR(4, 10)
+#define MX51EVK_LCD_BACKLIGHT	IMX_GPIO_NR(3, 4)
+
+static struct fb_videomode const claa_wvga = {
+	.name		= "CLAA07LC0ACW",
+	.refresh	= 57,
+	.xres		= 800,
+	.yres		= 480,
+	.pixclock	= 37037,
+	.left_margin	= 40,
+	.right_margin	= 60,
+	.upper_margin	= 10,
+	.lower_margin	= 10,
+	.hsync_len	= 20,
+	.vsync_len	= 10,
+	.sync		= 0,
+	.vmode		= FB_VMODE_NONINTERLACED
+};
+
+static struct fb_videomode const dvi = {
+	.name		= "DVI panel",
+	.refresh	= 60,
+	.xres		= 1024,
+	.yres		= 768,
+	.pixclock	= 15385,
+	.left_margin	= 220,
+	.right_margin	= 40,
+	.upper_margin	= 21,
+	.lower_margin	= 7,
+	.hsync_len	= 60,
+	.vsync_len	= 10,
+	.sync		= 0,
+	.vmode		= FB_VMODE_NONINTERLACED
+};
+
+void setup_iomux_lcd(void)
+{
+	/* DI2_PIN15 */
+	imx_iomux_v3_setup_pad(MX51_PAD_DI_GP4__DI2_PIN15);
+
+	/* Pad settings for DI2_DISP_CLK */
+	imx_iomux_v3_setup_pad(NEW_PAD_CTRL(MX51_PAD_DI2_DISP_CLK__DI2_DISP_CLK,
+			    PAD_CTL_PKE | PAD_CTL_DSE_MAX | PAD_CTL_SRE_SLOW));
+
+	/* Turn on 3.3V voltage for LCD */
+	imx_iomux_v3_setup_pad(NEW_PAD_CTRL(MX51_PAD_CSI2_D12__GPIO4_9,
+						NO_PAD_CTRL));
+	gpio_direction_output(MX51EVK_LCD_3V3, 1);
+
+	/* Turn on 5V voltage for LCD */
+	imx_iomux_v3_setup_pad(NEW_PAD_CTRL(MX51_PAD_CSI2_D13__GPIO4_10,
+						NO_PAD_CTRL));
+	gpio_direction_output(MX51EVK_LCD_5V, 1);
+
+	/* Turn on GPIO backlight */
+	imx_iomux_v3_setup_pad(NEW_PAD_CTRL(MX51_PAD_DI1_D1_CS__GPIO3_4,
+						NO_PAD_CTRL));
+	gpio_direction_output(MX51EVK_LCD_BACKLIGHT, 1);
+}
+
+int board_video_skip(void)
+{
+	int ret;
+	char const *e = env_get("panel");
+
+	if (e) {
+		if (strcmp(e, "claa") == 0) {
+			ret = ipuv3_fb_init(&claa_wvga, 1, IPU_PIX_FMT_RGB565);
+			if (ret)
+				printf("claa cannot be configured: %d\n", ret);
+			return ret;
+		}
+	}
+
+	/*
+	 * 'panel' env variable not found or has different value than 'claa'
+	 *  Defaulting to dvi output.
+	 */
+	ret = ipuv3_fb_init(&dvi, 0, IPU_PIX_FMT_RGB24);
+	if (ret)
+		printf("dvi cannot be configured: %d\n", ret);
+	return ret;
+}