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[ARM] 3326/1: H1940 - Control latches

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Patch from Ben Dooks

Define the bits for the two board control latches
that control various items on the H1940 iPAQ.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Ben Dooks 2006-02-10 22:40:51 +00:00 committed by Russell King
parent b514d31927
commit e198168083
2 changed files with 91 additions and 2 deletions
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29
arch/arm/mach-s3c2410/mach-h1940.c
View file

@ -46,10 +46,11 @@
#include <asm/irq.h>
#include <asm/mach-types.h>
//#include <asm/debug-ll.h>
#include <asm/arch/regs-serial.h>
#include <asm/arch/regs-lcd.h>
#include <asm/arch/h1940-latch.h>
#include <asm/arch/fb.h>
#include <linux/serial_core.h>
@ -59,7 +60,12 @@
#include "cpu.h"
static struct map_desc h1940_iodesc[] __initdata = {
/* nothing here yet */
[0] = {
.virtual = (unsigned long)H1940_LATCH,
.pfn = __phys_to_pfn(H1940_PA_LATCH),
.length = SZ_16K,
.type = MT_DEVICE
},
};
#define UCON S3C2410_UCON_DEFAULT | S3C2410_UCON_UCLK
@ -92,6 +98,25 @@ static struct s3c2410_uartcfg h1940_uartcfgs[] = {
}
};
/* Board control latch control */
static unsigned int latch_state = H1940_LATCH_DEFAULT;
void h1940_latch_control(unsigned int clear, unsigned int set)
{
unsigned long flags;
local_irq_save(flags);
latch_state &= ~clear;
latch_state |= set;
__raw_writel(latch_state, H1940_LATCH);
local_irq_restore(flags);
}
EXPORT_SYMBOL_GPL(h1940_latch_control);
/**

64
include/asm-arm/arch-s3c2410/h1940-latch.h Normal file
View file

@ -0,0 +1,64 @@
/* linux/include/asm-arm/arch-s3c2410/h1940-latch.h
*
* (c) 2005 Simtec Electronics
* http://armlinux.simtec.co.uk/
* Ben Dooks <ben@simtec.co.uk>
*
* iPAQ H1940 series - latch definitions
*
* 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.
*/
#ifndef __ASM_ARCH_H1940_LATCH_H
#define __ASM_ARCH_H1940_LATCH_H
#ifndef __ASSEMBLY__
#define H1940_LATCH ((void __iomem *)0xF8000000)
#else
#define H1940_LATCH 0xF8000000
#endif
#define H1940_PA_LATCH (S3C2410_CS2)
/* SD layer latch */
#define H1940_LATCH_SDQ1 (1<<16)
#define H1940_LATCH_LCD_P1 (1<<17)
#define H1940_LATCH_LCD_P2 (1<<18)
#define H1940_LATCH_LCD_P3 (1<<19)
#define H1940_LATCH_MAX1698_nSHUTDOWN (1<<20) /* LCD backlight */
#define H1940_LATCH_LED_RED (1<<21)
#define H1940_LATCH_SDQ7 (1<<22)
#define H1940_LATCH_USB_DP (1<<23)
/* CPU layer latch */
#define H1940_LATCH_UDA_POWER (1<<24)
#define H1940_LATCH_AUDIO_POWER (1<<25)
#define H1940_LATCH_SM803_ENABLE (1<<26)
#define H1940_LATCH_LCD_P4 (1<<27)
#define H1940_LATCH_CPUQ5 (1<<28) /* untraced */
#define H1940_LATCH_BLUETOOTH_POWER (1<<29) /* active high */
#define H1940_LATCH_LED_GREEN (1<<30)
#define H1940_LATCH_LED_FLASH (1<<31)
/* default settings */
#define H1940_LATCH_DEFAULT \
H1940_LATCH_LCD_P4 | \
H1940_LATCH_SM803_ENABLE | \
H1940_LATCH_SDQ1 | \
H1940_LATCH_LCD_P1 | \
H1940_LATCH_LCD_P2 | \
H1940_LATCH_LCD_P3 | \
H1940_LATCH_MAX1698_nSHUTDOWN | \
H1940_LATCH_CPUQ5
/* control functions */
extern void h1940_latch_control(unsigned int clear, unsigned int set);
#endif /* __ASM_ARCH_H1940_LATCH_H */