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ar71xx: add latch handling code for the RB750

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@20050 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
juhosg 2010-03-08 12:09:49 +00:00
parent 2b3fad7526
commit bdf568ed13
2 changed files with 104 additions and 0 deletions
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50
target/linux/ar71xx/files/arch/mips/ar71xx/mach-rb750.c
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@ -9,10 +9,60 @@
*/
#include <asm/mach-ar71xx/ar71xx.h>
#include <asm/mach-ar71xx/mach-rb750.h>
#include "machtype.h"
#include "dev-ap91-eth.h"
int rb750_latch_change(u32 mask_clr, u32 mask_set)
{
static DEFINE_SPINLOCK(lock);
static u32 latch_set = RB750_LED_BITS | RB750_LVC573_LE;
static u32 latch_oe;
static u32 latch_clr;
unsigned long flags;
u32 t;
int ret = 0;
spin_lock_irqsave(&lock, flags);
if ((mask_clr & BIT(31)) != 0 &&
(latch_set & RB750_LVC573_LE) == 0) {
goto unlock;
}
latch_set = (latch_set | mask_set) & ~mask_clr;
latch_clr = (latch_clr | mask_clr) & ~mask_set;
if (latch_oe == 0)
latch_oe = __raw_readl(ar71xx_gpio_base + GPIO_REG_OE);
if (likely(latch_set & RB750_LVC573_LE)) {
void __iomem *base = ar71xx_gpio_base;
t = __raw_readl(base + GPIO_REG_OE);
t |= mask_clr | latch_oe | mask_set;
__raw_writel(t, base + GPIO_REG_OE);
__raw_writel(latch_clr, base + GPIO_REG_CLEAR);
__raw_writel(latch_set, base + GPIO_REG_SET);
} else if (mask_clr & RB750_LVC573_LE) {
void __iomem *base = ar71xx_gpio_base;
latch_oe = __raw_readl(base + GPIO_REG_OE);
__raw_writel(RB750_LVC573_LE, base + GPIO_REG_CLEAR);
/* flush write */
__raw_readl(base + GPIO_REG_CLEAR);
}
ret = 1;
unlock:
spin_unlock_irqrestore(&lock, flags);
return ret;
}
EXPORT_SYMBOL_GPL(rb750_latch_change);
static void __init rb750_setup(void)
{
ap91_eth_init(NULL);

54
target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/mach-rb750.h Normal file
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@ -0,0 +1,54 @@
/*
* MikroTik RouterBOARD 750 definitions
*
* Copyright (C) 2010 Gabor Juhos <juhosg@openwrt.org>
*
* 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 _MACH_RB750_H
#define _MACH_RB750_H
#include <linux/bitops.h>
#define RB750_GPIO_LVC573_LE 0 /* Latch enable on LVC573 */
#define RB750_GPIO_NAND_IO0 1 /* NAND I/O 0 */
#define RB750_GPIO_NAND_IO1 2 /* NAND I/O 1 */
#define RB750_GPIO_NAND_IO2 3 /* NAND I/O 2 */
#define RB750_GPIO_NAND_IO3 4 /* NAND I/O 3 */
#define RB750_GPIO_NAND_IO4 5 /* NAND I/O 4 */
#define RB750_GPIO_NAND_IO5 6 /* NAND I/O 5 */
#define RB750_GPIO_NAND_IO6 7 /* NAND I/O 6 */
#define RB750_GPIO_NAND_IO7 8 /* NAND I/O 7 */
#define RB750_GPIO_NAND_NCE 11 /* NAND Chip Enable (active low) */
#define RB750_GPIO_NAND_RDY 12 /* NAND Ready */
#define RB750_GPIO_NAND_CLE 14 /* NAND Command Latch Enable */
#define RB750_GPIO_NAND_ALE 15 /* NAND Address Latch Enable */
#define RB750_GPIO_NAND_NRE 16 /* NAND Read Enable (active low) */
#define RB750_GPIO_NAND_NWE 17 /* NAND Write Enable (active low) */
#define RB750_GPIO_BTN_RESET 1
#define RB750_GPIO_SPI_CS0 2
#define RB750_GPIO_LED_ACT 12
#define RB750_GPIO_LED_PORT1 13
#define RB750_GPIO_LED_PORT2 14
#define RB750_GPIO_LED_PORT3 15
#define RB750_GPIO_LED_PORT4 16
#define RB750_GPIO_LED_PORT5 17
#define RB750_LED_ACT BIT(RB750_GPIO_LED_ACT)
#define RB750_LED_PORT1 BIT(RB750_GPIO_LED_PORT1)
#define RB750_LED_PORT2 BIT(RB750_GPIO_LED_PORT2)
#define RB750_LED_PORT3 BIT(RB750_GPIO_LED_PORT3)
#define RB750_LED_PORT4 BIT(RB750_GPIO_LED_PORT4)
#define RB750_LED_PORT5 BIT(RB750_GPIO_LED_PORT5)
#define RB750_LVC573_LE BIT(RB750_GPIO_LVC573_LE)
#define RB750_LED_BITS (RB750_LED_PORT1 | RB750_LED_PORT2 | RB750_LED_PORT3 | \
RB750_LED_PORT4 | RB750_LED_PORT5 | RB750_LED_ACT)
int rb750_latch_change(u32 mask_clr, u32 mask_set);
#endif /* _MACH_RB750_H */