fbdev: sh_mobile_hdmi: add initial support for modes, other than 720p

To support standard video modes, other than 720p, the HDMI PHY configuration
has to be adjusted and the VIC has to be sent to the display.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

drivers/video/sh_mobile_hdmi.c

@@ -381,21 +381,61 @@ static void sh_hdmi_audio_config(struct sh_hdmi *hdmi)
 }
 
 /**
- * sh_hdmi_phy_config()
+ * sh_hdmi_phy_config() - configure the HDMI PHY for the used video mode
  */
 static void sh_hdmi_phy_config(struct sh_hdmi *hdmi)
 {
-	/* 720p, 8bit, 74.25MHz. Might need to be adjusted for other formats */
-	hdmi_write(hdmi, 0x19, HDMI_SLIPHDMIT_PARAM_SETTINGS_1);
-	hdmi_write(hdmi, 0x00, HDMI_SLIPHDMIT_PARAM_SETTINGS_2);
-	hdmi_write(hdmi, 0x00, HDMI_SLIPHDMIT_PARAM_SETTINGS_3);
-	/* PLLA_CONFIG[7:0]: VCO gain, VCO offset, LPF resistance[0] */
-	hdmi_write(hdmi, 0x44, HDMI_SLIPHDMIT_PARAM_SETTINGS_5);
-	hdmi_write(hdmi, 0x32, HDMI_SLIPHDMIT_PARAM_SETTINGS_6);
-	hdmi_write(hdmi, 0x4A, HDMI_SLIPHDMIT_PARAM_SETTINGS_7);
-	hdmi_write(hdmi, 0x0E, HDMI_SLIPHDMIT_PARAM_SETTINGS_8);
-	hdmi_write(hdmi, 0x25, HDMI_SLIPHDMIT_PARAM_SETTINGS_9);
-	hdmi_write(hdmi, 0x04, HDMI_SLIPHDMIT_PARAM_SETTINGS_10);
+	if (hdmi->var.yres > 480) {
+		/* 720p, 8bit, 74.25MHz. Might need to be adjusted for other formats */
+		/*
+		 * [1:0]	Speed_A
+		 * [3:2]	Speed_B
+		 * [4]		PLLA_Bypass
+		 * [6]		DRV_TEST_EN
+		 * [7]		DRV_TEST_IN
+		 */
+		hdmi_write(hdmi, 0x19, HDMI_SLIPHDMIT_PARAM_SETTINGS_1);
+		/* PLLB_CONFIG[17], PLLA_CONFIG[17] - not in PHY datasheet */
+		hdmi_write(hdmi, 0x00, HDMI_SLIPHDMIT_PARAM_SETTINGS_2);
+		/*
+		 * [2:0]	BGR_I_OFFSET
+		 * [6:4]	BGR_V_OFFSET
+		 */
+		hdmi_write(hdmi, 0x00, HDMI_SLIPHDMIT_PARAM_SETTINGS_3);
+		/* PLLA_CONFIG[7:0]: VCO gain, VCO offset, LPF resistance[0] */
+		hdmi_write(hdmi, 0x44, HDMI_SLIPHDMIT_PARAM_SETTINGS_5);
+		/*
+		 * PLLA_CONFIG[15:8]: regulator voltage[0], CP current,
+		 * LPF capacitance, LPF resistance[1]
+		 */
+		hdmi_write(hdmi, 0x32, HDMI_SLIPHDMIT_PARAM_SETTINGS_6);
+		/* PLLB_CONFIG[7:0]: LPF resistance[0], VCO offset, VCO gain */
+		hdmi_write(hdmi, 0x4A, HDMI_SLIPHDMIT_PARAM_SETTINGS_7);
+		/*
+		 * PLLB_CONFIG[15:8]: regulator voltage[0], CP current,
+		 * LPF capacitance, LPF resistance[1]
+		 */
+		hdmi_write(hdmi, 0x0E, HDMI_SLIPHDMIT_PARAM_SETTINGS_8);
+		/* DRV_CONFIG, PE_CONFIG */
+		hdmi_write(hdmi, 0x25, HDMI_SLIPHDMIT_PARAM_SETTINGS_9);
+		/*
+		 * [2:0]	AMON_SEL (4 == LPF voltage)
+		 * [4]		PLLA_CONFIG[16]
+		 * [5]		PLLB_CONFIG[16]
+		 */
+		hdmi_write(hdmi, 0x04, HDMI_SLIPHDMIT_PARAM_SETTINGS_10);
+	} else {
+		/* for 480p8bit 27MHz */
+		hdmi_write(hdmi, 0x19, HDMI_SLIPHDMIT_PARAM_SETTINGS_1);
+		hdmi_write(hdmi, 0x00, HDMI_SLIPHDMIT_PARAM_SETTINGS_2);
+		hdmi_write(hdmi, 0x00, HDMI_SLIPHDMIT_PARAM_SETTINGS_3);
+		hdmi_write(hdmi, 0x44, HDMI_SLIPHDMIT_PARAM_SETTINGS_5);
+		hdmi_write(hdmi, 0x32, HDMI_SLIPHDMIT_PARAM_SETTINGS_6);
+		hdmi_write(hdmi, 0x48, HDMI_SLIPHDMIT_PARAM_SETTINGS_7);
+		hdmi_write(hdmi, 0x0F, HDMI_SLIPHDMIT_PARAM_SETTINGS_8);
+		hdmi_write(hdmi, 0x20, HDMI_SLIPHDMIT_PARAM_SETTINGS_9);
+		hdmi_write(hdmi, 0x04, HDMI_SLIPHDMIT_PARAM_SETTINGS_10);
+	}
 }
 
 /**
@@ -403,6 +443,8 @@ static void sh_hdmi_phy_config(struct sh_hdmi *hdmi)
  */
 static void sh_hdmi_avi_infoframe_setup(struct sh_hdmi *hdmi)
 {
+	u8 vic;
+
 	/* AVI InfoFrame */
 	hdmi_write(hdmi, 0x06, HDMI_CTRL_PKT_BUF_INDEX);
 
@@ -443,9 +485,15 @@ static void sh_hdmi_avi_infoframe_setup(struct sh_hdmi *hdmi)
 
 	/*
 	 * VIC = 1280 x 720p: ignored if external config is used
-	 * Send 2 for 720 x 480p, 16 for 1080p
+	 * Send 2 for 720 x 480p, 16 for 1080p, ignored in external mode
 	 */
-	hdmi_write(hdmi, 4, HDMI_CTRL_PKT_BUF_ACCESS_PB4);
+	if (hdmi->var.yres == 1080 && hdmi->var.xres == 1920)
+		vic = 16;
+	else if (hdmi->var.yres == 480 && hdmi->var.xres == 720)
+		vic = 2;
+	else
+		vic = 4;
+	hdmi_write(hdmi, vic, HDMI_CTRL_PKT_BUF_ACCESS_PB4);
 
 	/* PR = No Repetition */
 	hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB5);
@@ -666,12 +714,6 @@ static void hdmi_display_on(void *arg, struct fb_info *info)
 	struct sh_hdmi *hdmi = arg;
 	struct sh_mobile_hdmi_info *pdata = hdmi->dev->platform_data;
 
-	if (info->var.xres != 1280 || info->var.yres != 720) {
-		dev_warn(info->device, "Unsupported framebuffer geometry %ux%u\n",
-			 info->var.xres, info->var.yres);
-		return;
-	}
-
 	pr_debug("%s(%p): state %x\n", __func__, pdata->lcd_dev, info->state);
 	/*
 	 * FIXME: not a good place to store fb_info. And we cannot nullify it