From mboxrd@z Thu Jan  1 00:00:00 1970
From: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Date: Wed, 30 Jun 2010 09:55:47 +0000
Subject: [PATCH 6/6] ARM: mach-shmobile: add HDMI support to the ap4evb board
Message-Id: <Pine.LNX.4.64.1006301152570.17489@axis700.grange>
List-Id: <linux-fbdev.vger.kernel.org>
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To: linux-fbdev@vger.kernel.org

Support HDMI in 720p mode.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
---
 arch/arm/mach-shmobile/board-ap4evb.c |  128 ++++++++++++++++++++++++++++++++-
 1 files changed, 127 insertions(+), 1 deletions(-)

diff --git a/arch/arm/mach-shmobile/board-ap4evb.c b/arch/arm/mach-shmobile/board-ap4evb.c
index 5d24d4e..4f4d8c4 100644
--- a/arch/arm/mach-shmobile/board-ap4evb.c
+++ b/arch/arm/mach-shmobile/board-ap4evb.c
@@ -44,6 +44,7 @@
 
 #include <sound/sh_fsi.h>
 
+#include <video/sh_mobile_hdmi.h>
 #include <video/sh_mobile_lcdc.h>
 #include <video/sh_mipi_dsi.h>
 
@@ -529,6 +530,90 @@ static struct platform_device fsi_device = {
 	},
 };
 
+static struct sh_mobile_lcdc_info sh_mobile_lcdc1_info = {
+	.clock_source = LCDC_CLK_EXTERNAL,
+	.ch[0] = {
+		.chan = LCDC_CHAN_MAINLCD,
+		.bpp = 16,
+		.interface_type = RGB24,
+		.clock_divider = 1,
+		.flags = LCDC_FLAGS_DWPOL | LCDC_FLAGS_HDMI,
+		.lcd_cfg = {
+			.name = "HDMI",
+			/* So far only 720p is supported */
+			.xres = 1280,
+			.yres = 720,
+			/*
+			 * If left and right margins are not multiples of 8,
+			 * LDHAJR will be adjusted accordingly by the LCDC
+			 * driver. Until we start using EDID, these values
+			 * might have to be adjusted for different monitors.
+			 */
+			.left_margin = 200,
+			.right_margin = 88,
+			.hsync_len = 48,
+			.upper_margin = 20,
+			.lower_margin = 5,
+			.vsync_len = 5,
+			.pixclock = 13468,
+			.sync = FB_SYNC_VERT_HIGH_ACT | FB_SYNC_HOR_HIGH_ACT,
+		},
+	}
+};
+
+static struct resource lcdc1_resources[] = {
+	[0] = {
+		.name	= "LCDC1",
+		.start	= 0xfe944000,
+		.end	= 0xfe947fff,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= intcs_evt2irq(0x17a0),
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device lcdc1_device = {
+	.name		= "sh_mobile_lcdc_fb",
+	.num_resources	= ARRAY_SIZE(lcdc1_resources),
+	.resource	= lcdc1_resources,
+	.id             = 1,
+	.dev	= {
+		.platform_data	= &sh_mobile_lcdc1_info,
+		.coherent_dma_mask = ~0,
+	},
+};
+
+static struct sh_mobile_hdmi_info hdmi_info = {
+	.lcd_chan = &sh_mobile_lcdc1_info.ch[0],
+	.lcd_dev = &lcdc1_device.dev,
+};
+
+static struct resource hdmi_resources[] = {
+	[0] = {
+		.name	= "HDMI",
+		.start	= 0xe6be0000,
+		.end	= 0xe6be00ff,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		/* There's also an HDMI interrupt on INTCS @ 0x18e0 */
+		.start	= evt2irq(0x17e0),
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device hdmi_device = {
+	.name		= "sh-mobile-hdmi",
+	.num_resources	= ARRAY_SIZE(hdmi_resources),
+	.resource	= hdmi_resources,
+	.id             = -1,
+	.dev	= {
+		.platform_data	= &hdmi_info,
+	},
+};
+
 static struct platform_device *ap4evb_devices[] __initdata = {
 	&nor_flash_device,
 	&smc911x_device,
@@ -539,7 +624,9 @@ static struct platform_device *ap4evb_devices[] __initdata = {
 	&lcdc_device,
 	&mipidsi0_device,
 	&fsi_device,
-	&sh_mmcif_device
+	&sh_mmcif_device,
+	&lcdc1_device,
+	&hdmi_device,
 };
 
 /* TouchScreen (Needs SW3 set to OFF) */
@@ -645,8 +732,36 @@ static void __init gpio_no_direction(u32 addr)
 #define GPIO_PORT9CR	0xE6051009
 #define GPIO_PORT10CR	0xE605100A
 
+static int __init hdmi_init_pm_clock(void)
+{
+	struct clk *hdmi_pm = clk_get(NULL, "sh-hdmi.0"),
+		*lcdc1_pm = clk_get(&lcdc1_device.dev, "sh_mobile_lcdc_fb.1");
+	int ret;
+
+	if (!IS_ERR(hdmi_pm)) {
+		ret = clk_enable(hdmi_pm);
+		if (ret < 0)
+			pr_err("Cannot enable clock: %d\n", ret);
+	} else {
+		pr_err("Cannot get HDMI PM: %ld\n", PTR_ERR(hdmi_pm));
+	}
+
+	if (!IS_ERR(lcdc1_pm)) {
+		ret = clk_enable(lcdc1_pm);
+		if (ret < 0)
+			pr_err("Cannot enable clock: %d\n", ret);
+	} else {
+		pr_err("Cannot get LCDC1 PM: %ld\n", PTR_ERR(lcdc1_pm));
+	}
+
+	return 0;
+}
+
+device_initcall(hdmi_init_pm_clock);
+
 static void __init ap4evb_init(void)
 {
+	u32 srcr4;
 	struct clk *clk;
 
 	sh7372_pinmux_init();
@@ -787,6 +902,17 @@ static void __init ap4evb_init(void)
 
 	sh7372_add_standard_devices();
 
+	/* HDMI */
+	gpio_request(GPIO_FN_HDMI_HPD, NULL);
+	gpio_request(GPIO_FN_HDMI_CEC, NULL);
+
+	/* Reset HDMI, must be held at least one EXTALR (32768Hz) period */
+#define SRCR4 0xe61580bc
+	srcr4 = __raw_readl(SRCR4);
+	__raw_writel(srcr4 | (1 << 13), SRCR4);
+	udelay(50);
+	__raw_writel(srcr4 & ~(1 << 13), SRCR4);
+
 	platform_add_devices(ap4evb_devices, ARRAY_SIZE(ap4evb_devices));
 }
 
-- 
1.6.2.4