arch/arm/mach-sa1100/jornada720.c

Source file repositories/reference/linux-study-clean/arch/arm/mach-sa1100/jornada720.c

File Facts

System
Linux kernel
Corpus path
arch/arm/mach-sa1100/jornada720.c
Extension
.c
Size
12822 bytes
Lines
381
Domain
Architecture Layer
Bucket
arch/arm
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0-only
/*
 * linux/arch/arm/mach-sa1100/jornada720.c
 *
 * HP Jornada720 init code
 *
 * Copyright (C) 2007 Kristoffer Ericson <Kristoffer.Ericson@gmail.com>
 * Copyright (C) 2006 Filip Zyzniewski <filip.zyzniewski@tefnet.pl>
 *  Copyright (C) 2005 Michael Gernoth <michael@gernoth.net>
 */

#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/tty.h>
#include <linux/delay.h>
#include <linux/gpio/machine.h>
#include <linux/platform_data/sa11x0-serial.h>
#include <linux/platform_device.h>
#include <linux/ioport.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <video/s1d13xxxfb.h>

#include <asm/hardware/sa1111.h>
#include <asm/page.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>

#include <mach/hardware.h>
#include <mach/irqs.h>

#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	0x00002000
#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

Annotation

Implementation Notes