From 408966b85e47859a488f0f6e8c83f09beb563081 Mon Sep 17 00:00:00 2001
From: Kristoffer Ericson <Kristoffer_e1@hotmail.com>
Date: Wed, 13 Dec 2006 21:32:08 +0100
Subject: [PATCH] [ARM] 4017/1: [Jornada7xx] - Updating Jornada720.c

* HP Jornada 720 uses epson 1356 chip for graphics. This chip is compatible with s1d13xxxfb driver.

* HP Jornada 720 uses a Microprocessor Control Unit to talk to various
hardware. We add it as a platform device in jornada720_init()

* We provide pm_suspend() to avoid unresolved symbols in apm.o. We are
unable to truly suspend now, hence the stub.

* Speaker/microphone enabling got removed because it will be placed in the alsa driver.

Signed-off-by: Filip Zyzniewski <(address hidden)>
Signed-off-by: Kristoffer Ericson <(address hidden)>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/mach-sa1100/jornada720.c | 229 ++++++++++++++++++++++++++----
 1 file changed, 204 insertions(+), 25 deletions(-)

diff --git a/arch/arm/mach-sa1100/jornada720.c b/arch/arm/mach-sa1100/jornada720.c
index 17f5a43acd..54ecdaa373 100644
--- a/arch/arm/mach-sa1100/jornada720.c
+++ b/arch/arm/mach-sa1100/jornada720.c
@@ -1,5 +1,15 @@
 /*
  * linux/arch/arm/mach-sa1100/jornada720.c
+ *
+ * HP Jornada720 init code
+ *
+ * Copyright (C) 2006 Filip Zyzniewski <filip.zyzniewski@tefnet.pl>
+ *  Copyright (C) 2005 Michael Gernoth <michael@gernoth.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
  */
 
 #include <linux/init.h>
@@ -10,13 +20,13 @@
 #include <linux/ioport.h>
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/partitions.h>
+#include <video/s1d13xxxfb.h>
 
 #include <asm/hardware.h>
 #include <asm/hardware/sa1111.h>
 #include <asm/irq.h>
 #include <asm/mach-types.h>
 #include <asm/setup.h>
-
 #include <asm/mach/arch.h>
 #include <asm/mach/flash.h>
 #include <asm/mach/map.h>
@@ -24,13 +34,170 @@
 
 #include "generic.h"
 
+/*
+ * HP Documentation referred in this file:
+ * http://www.jlime.com/downloads/development/docs/jornada7xx/jornada720.txt
+ */
+
+/* line 110 of HP's doc */
+#define TUCR_VAL	0x20000400
+
+/* memory space (line 52 of HP's doc) */
+#define SA1111REGSTART	0x40000000
+#define SA1111REGLEN	0x00001fff
+#define EPSONREGSTART	0x48000000
+#define EPSONREGLEN	0x00100000
+#define EPSONFBSTART	0x48200000
+/* 512kB framebuffer */
+#define EPSONFBLEN	512*1024
+
+static struct s1d13xxxfb_regval s1d13xxxfb_initregs[] = {
+	/* line 344 of HP's doc */
+	{0x0001,0x00},	// Miscellaneous Register
+	{0x01FC,0x00},	// Display Mode Register
+	{0x0004,0x00},	// General IO Pins Configuration Register 0
+	{0x0005,0x00},	// General IO Pins Configuration Register 1
+	{0x0008,0x00},	// General IO Pins Control Register 0
+	{0x0009,0x00},	// General IO Pins Control Register 1
+	{0x0010,0x01},	// Memory Clock Configuration Register
+	{0x0014,0x11},	// LCD Pixel Clock Configuration Register
+	{0x0018,0x01},	// CRT/TV Pixel Clock Configuration Register
+	{0x001C,0x01},	// MediaPlug Clock Configuration Register
+	{0x001E,0x01},	// CPU To Memory Wait State Select Register
+	{0x0020,0x00},	// Memory Configuration Register
+	{0x0021,0x45},	// DRAM Refresh Rate Register
+	{0x002A,0x01},	// DRAM Timings Control Register 0
+	{0x002B,0x03},	// DRAM Timings Control Register 1
+	{0x0030,0x1c},	// Panel Type Register
+	{0x0031,0x00},	// MOD Rate Register
+	{0x0032,0x4F},	// LCD Horizontal Display Width Register
+	{0x0034,0x07},	// LCD Horizontal Non-Display Period Register
+	{0x0035,0x01},	// TFT FPLINE Start Position Register
+	{0x0036,0x0B},	// TFT FPLINE Pulse Width Register
+	{0x0038,0xEF},	// LCD Vertical Display Height Register 0
+	{0x0039,0x00},	// LCD Vertical Display Height Register 1
+	{0x003A,0x13},	// LCD Vertical Non-Display Period Register
+	{0x003B,0x0B},	// TFT FPFRAME Start Position Register
+	{0x003C,0x01},	// TFT FPFRAME Pulse Width Register
+	{0x0040,0x05},	// LCD Display Mode Register (2:4bpp,3:8bpp,5:16bpp)
+	{0x0041,0x00},	// LCD Miscellaneous Register
+	{0x0042,0x00},	// LCD Display Start Address Register 0
+	{0x0043,0x00},	// LCD Display Start Address Register 1
+	{0x0044,0x00},	// LCD Display Start Address Register 2
+	{0x0046,0x80},	// LCD Memory Address Offset Register 0
+	{0x0047,0x02},	// LCD Memory Address Offset Register 1
+	{0x0048,0x00},	// LCD Pixel Panning Register
+	{0x004A,0x00},	// LCD Display FIFO High Threshold Control Register
+	{0x004B,0x00},	// LCD Display FIFO Low Threshold Control Register
+	{0x0050,0x4F},	// CRT/TV Horizontal Display Width Register
+	{0x0052,0x13},	// CRT/TV Horizontal Non-Display Period Register
+	{0x0053,0x01},	// CRT/TV HRTC Start Position Register
+	{0x0054,0x0B},	// CRT/TV HRTC Pulse Width Register
+	{0x0056,0xDF},	// CRT/TV Vertical Display Height Register 0
+	{0x0057,0x01},	// CRT/TV Vertical Display Height Register 1
+	{0x0058,0x2B},	// CRT/TV Vertical Non-Display Period Register
+	{0x0059,0x09},	// CRT/TV VRTC Start Position Register
+	{0x005A,0x01},	// CRT/TV VRTC Pulse Width Register
+	{0x005B,0x10},	// TV Output Control Register
+	{0x0060,0x03},	// CRT/TV Display Mode Register (2:4bpp,3:8bpp,5:16bpp)
+	{0x0062,0x00},	// CRT/TV Display Start Address Register 0
+	{0x0063,0x00},	// CRT/TV Display Start Address Register 1
+	{0x0064,0x00},	// CRT/TV Display Start Address Register 2
+	{0x0066,0x40},	// CRT/TV Memory Address Offset Register 0
+	{0x0067,0x01},	// CRT/TV Memory Address Offset Register 1
+	{0x0068,0x00},	// CRT/TV Pixel Panning Register
+	{0x006A,0x00},	// CRT/TV Display FIFO High Threshold Control Register
+	{0x006B,0x00},	// CRT/TV Display FIFO Low Threshold Control Register
+	{0x0070,0x00},	// LCD Ink/Cursor Control Register
+	{0x0071,0x01},	// LCD Ink/Cursor Start Address Register
+	{0x0072,0x00},	// LCD Cursor X Position Register 0
+	{0x0073,0x00},	// LCD Cursor X Position Register 1
+	{0x0074,0x00},	// LCD Cursor Y Position Register 0
+	{0x0075,0x00},	// LCD Cursor Y Position Register 1
+	{0x0076,0x00},	// LCD Ink/Cursor Blue Color 0 Register
+	{0x0077,0x00},	// LCD Ink/Cursor Green Color 0 Register
+	{0x0078,0x00},	// LCD Ink/Cursor Red Color 0 Register
+	{0x007A,0x1F},	// LCD Ink/Cursor Blue Color 1 Register
+	{0x007B,0x3F},	// LCD Ink/Cursor Green Color 1 Register
+	{0x007C,0x1F},	// LCD Ink/Cursor Red Color 1 Register
+	{0x007E,0x00},	// LCD Ink/Cursor FIFO Threshold Register
+	{0x0080,0x00},	// CRT/TV Ink/Cursor Control Register
+	{0x0081,0x01},	// CRT/TV Ink/Cursor Start Address Register
+	{0x0082,0x00},	// CRT/TV Cursor X Position Register 0
+	{0x0083,0x00},	// CRT/TV Cursor X Position Register 1
+	{0x0084,0x00},	// CRT/TV Cursor Y Position Register 0
+	{0x0085,0x00},	// CRT/TV Cursor Y Position Register 1
+	{0x0086,0x00},	// CRT/TV Ink/Cursor Blue Color 0 Register
+	{0x0087,0x00},	// CRT/TV Ink/Cursor Green Color 0 Register
+	{0x0088,0x00},	// CRT/TV Ink/Cursor Red Color 0 Register
+	{0x008A,0x1F},	// CRT/TV Ink/Cursor Blue Color 1 Register
+	{0x008B,0x3F},	// CRT/TV Ink/Cursor Green Color 1 Register
+	{0x008C,0x1F},	// CRT/TV Ink/Cursor Red Color 1 Register
+	{0x008E,0x00},	// CRT/TV Ink/Cursor FIFO Threshold Register
+	{0x0100,0x00},	// BitBlt Control Register 0
+	{0x0101,0x00},	// BitBlt Control Register 1
+	{0x0102,0x00},	// BitBlt ROP Code/Color Expansion Register
+	{0x0103,0x00},	// BitBlt Operation Register
+	{0x0104,0x00},	// BitBlt Source Start Address Register 0
+	{0x0105,0x00},	// BitBlt Source Start Address Register 1
+	{0x0106,0x00},	// BitBlt Source Start Address Register 2
+	{0x0108,0x00},	// BitBlt Destination Start Address Register 0
+	{0x0109,0x00},	// BitBlt Destination Start Address Register 1
+	{0x010A,0x00},	// BitBlt Destination Start Address Register 2
+	{0x010C,0x00},	// BitBlt Memory Address Offset Register 0
+	{0x010D,0x00},	// BitBlt Memory Address Offset Register 1
+	{0x0110,0x00},	// BitBlt Width Register 0
+	{0x0111,0x00},	// BitBlt Width Register 1
+	{0x0112,0x00},	// BitBlt Height Register 0
+	{0x0113,0x00},	// BitBlt Height Register 1
+	{0x0114,0x00},	// BitBlt Background Color Register 0
+	{0x0115,0x00},	// BitBlt Background Color Register 1
+	{0x0118,0x00},	// BitBlt Foreground Color Register 0
+	{0x0119,0x00},	// BitBlt Foreground Color Register 1
+	{0x01E0,0x00},	// Look-Up Table Mode Register
+	{0x01E2,0x00},	// Look-Up Table Address Register
+	/* not sure, wouldn't like to mess with the driver */
+	{0x01E4,0x00},	// Look-Up Table Data Register
+	/* jornada doc says 0x00, but I trust the driver */
+	{0x01F0,0x10},	// Power Save Configuration Register
+	{0x01F1,0x00},	// Power Save Status Register
+	{0x01F4,0x00},	// CPU-to-Memory Access Watchdog Timer Register
+	{0x01FC,0x01},	// Display Mode Register(0x01:LCD, 0x02:CRT, 0x03:LCD&CRT)
+};
+
+static struct s1d13xxxfb_pdata s1d13xxxfb_data = {
+	.initregs		= s1d13xxxfb_initregs,
+	.initregssize		= ARRAY_SIZE(s1d13xxxfb_initregs),
+	.platform_init_video	= NULL
+};
 
-#define JORTUCR_VAL	0x20000400
+static struct resource s1d13xxxfb_resources[] = {
+	[0] = {
+		.start	= EPSONFBSTART,
+		.end	= EPSONFBSTART + EPSONFBLEN,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= EPSONREGSTART,
+		.end	= EPSONREGSTART + EPSONREGLEN,
+		.flags	= IORESOURCE_MEM,
+	}
+};
+
+static struct platform_device s1d13xxxfb_device = {
+	.name		= S1D_DEVICENAME,
+	.id		= 0,
+	.dev		= {
+		.platform_data	= &s1d13xxxfb_data,
+	},
+	.num_resources	= ARRAY_SIZE(s1d13xxxfb_resources),
+	.resource	= s1d13xxxfb_resources,
+};
 
 static struct resource sa1111_resources[] = {
 	[0] = {
-		.start		= 0x40000000,
-		.end		= 0x40001fff,
+		.start		= SA1111REGSTART,
+		.end		= SA1111REGSTART + SA1111REGLEN,
 		.flags		= IORESOURCE_MEM,
 	},
 	[1] = {
@@ -53,18 +220,32 @@ static struct platform_device sa1111_device = {
 	.resource	= sa1111_resources,
 };
 
+static struct platform_device jornada720_mcu_device = {
+	.name		= "jornada720_mcu",
+	.id		= -1,
+};
+
 static struct platform_device *devices[] __initdata = {
 	&sa1111_device,
+	&jornada720_mcu_device,
+	&s1d13xxxfb_device,
 };
 
+/* a stub for now, we theoretically cannot suspend without a flashboard */
+int pm_suspend(suspend_state_t state)
+{
+	return -1;
+}
+
 static int __init jornada720_init(void)
 {
 	int ret = -ENODEV;
 
 	if (machine_is_jornada720()) {
 		GPDR |= GPIO_GPIO20;
-		TUCR = JORTUCR_VAL;	/* set the oscillator out to the SA-1101 */
-
+		/* oscillator setup (line 116 of HP's doc) */
+		TUCR = TUCR_VAL;
+		/* resetting SA1111 (line 118 of HP's doc) */
 		GPSR = GPIO_GPIO20;
 		udelay(1);
 		GPCR = GPIO_GPIO20;
@@ -72,10 +253,6 @@ static int __init jornada720_init(void)
 		GPSR = GPIO_GPIO20;
 		udelay(20);
 
-		/* LDD4 is speaker, LDD3 is microphone */
-		PPSR &= ~(PPC_LDD3 | PPC_LDD4);
-		PPDR |= PPC_LDD3 | PPC_LDD4;
-
 		ret = platform_add_devices(devices, ARRAY_SIZE(devices));
 	}
 	return ret;
@@ -85,19 +262,19 @@ arch_initcall(jornada720_init);
 
 static struct map_desc jornada720_io_desc[] __initdata = {
 	{	/* Epson registers */
-		.virtual	=  0xf0000000,
-		.pfn		= __phys_to_pfn(0x48000000),
-		.length		= 0x00100000,
+		.virtual	= 0xf0000000,
+		.pfn		= __phys_to_pfn(EPSONREGSTART),
+		.length		= EPSONREGLEN,
 		.type		= MT_DEVICE
 	}, {	/* Epson frame buffer */
-		.virtual	=  0xf1000000,
-		.pfn		= __phys_to_pfn(0x48200000),
-		.length		= 0x00100000,
+		.virtual	= 0xf1000000,
+		.pfn		= __phys_to_pfn(EPSONFBSTART),
+		.length		= EPSONFBLEN,
 		.type		= MT_DEVICE
 	}, {	/* SA-1111 */
-		.virtual	=  0xf4000000,
-		.pfn		= __phys_to_pfn(0x40000000),
-		.length		= 0x00100000,
+		.virtual	= 0xf4000000,
+		.pfn		= __phys_to_pfn(SA1111REGSTART),
+		.length		= SA1111REGLEN,
 		.type		= MT_DEVICE
 	}
 };
@@ -106,7 +283,7 @@ static void __init jornada720_map_io(void)
 {
 	sa1100_map_io();
 	iotable_init(jornada720_io_desc, ARRAY_SIZE(jornada720_io_desc));
-	
+
 	sa1100_register_uart(0, 3);
 	sa1100_register_uart(1, 1);
 }
@@ -116,7 +293,7 @@ static struct mtd_partition jornada720_partitions[] = {
 		.name		= "JORNADA720 boot firmware",
 		.size		= 0x00040000,
 		.offset		= 0,
-		.mask_flags	= MTD_WRITEABLE,  /* force read-only */
+		.mask_flags	= MTD_WRITEABLE, /* force read-only */
 	}, {
 		.name		= "JORNADA720 kernel",
 		.size		= 0x000c0000,
@@ -139,7 +316,7 @@ static struct mtd_partition jornada720_partitions[] = {
 		.offset		= 0x00540000,
 	}, {
 		.name		= "JORNADA720 usr local",
-		.size		= 0,  /* will expand to the end of the flash */
+		.size		= 0, /* will expand to the end of the flash */
 		.offset		= 0x00d00000,
 	}
 };
@@ -147,10 +324,12 @@ static struct mtd_partition jornada720_partitions[] = {
 static void jornada720_set_vpp(int vpp)
 {
 	if (vpp)
-		PPSR |= 0x80;
+		/* enabling flash write (line 470 of HP's doc) */
+		PPSR |= PPC_LDD7;
 	else
-		PPSR &= ~0x80;
-	PPDR |= 0x80;
+		/* disabling flash write (line 470 of HP's doc) */
+		PPSR &= ~PPC_LDD7;
+	PPDR |= PPC_LDD7;
 }
 
 static struct flash_platform_data jornada720_flash_data = {
-- 
2.39.5