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authorGabor Juhos <juhosg@openwrt.org>2010-03-08 12:09:49 +0000
committerGabor Juhos <juhosg@openwrt.org>2010-03-08 12:09:49 +0000
commita1a9727fbfa4709e5c3c01d8129f0bd35e74a5b4 (patch)
treebaa1ac5dce1e8d2a7feeab126c5ef75e41eba04a /target/linux/ar71xx/files/arch
parent74f9af4c10669f9ad46c47e4a0fa966aaada65ea (diff)
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ar71xx: add latch handling code for the RB750
SVN-Revision: 20050
Diffstat (limited to 'target/linux/ar71xx/files/arch')
-rw-r--r--target/linux/ar71xx/files/arch/mips/ar71xx/mach-rb750.c50
-rw-r--r--target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/mach-rb750.h54
2 files changed, 104 insertions, 0 deletions
diff --git a/target/linux/ar71xx/files/arch/mips/ar71xx/mach-rb750.c b/target/linux/ar71xx/files/arch/mips/ar71xx/mach-rb750.c
index dd481d9eb9..06f48328e4 100644
--- a/target/linux/ar71xx/files/arch/mips/ar71xx/mach-rb750.c
+++ b/target/linux/ar71xx/files/arch/mips/ar71xx/mach-rb750.c
@@ -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);
diff --git a/target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/mach-rb750.h b/target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/mach-rb750.h
new file mode 100644
index 0000000000..8165da3e61
--- /dev/null
+++ b/target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/mach-rb750.h
@@ -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 */ \ No newline at end of file