From 2f3b768d56c443c04e57ada7ac6893ef7c8ab7bc Mon Sep 17 00:00:00 2001
From: juhosg <juhosg@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Fri, 4 Sep 2009 15:08:26 +0000
Subject: [ramips] add GPIO configuration feature

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@17512 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
 .../files/arch/mips/ralink/rt305x/mach-v22rw-2x2.c |  6 +++
 .../files/arch/mips/ralink/rt305x/mach-whr-g300n.c |  4 ++
 .../ramips/files/arch/mips/ralink/rt305x/rt305x.c  | 58 ++++++++++++++++++++++
 3 files changed, 68 insertions(+)

(limited to 'target/linux/ramips/files/arch/mips/ralink/rt305x')

diff --git a/target/linux/ramips/files/arch/mips/ralink/rt305x/mach-v22rw-2x2.c b/target/linux/ramips/files/arch/mips/ralink/rt305x/mach-v22rw-2x2.c
index 118676327..8bd2c956f 100644
--- a/target/linux/ramips/files/arch/mips/ralink/rt305x/mach-v22rw-2x2.c
+++ b/target/linux/ramips/files/arch/mips/ralink/rt305x/mach-v22rw-2x2.c
@@ -18,9 +18,13 @@
 #include <asm/mips_machine.h>
 #include <asm/mach-ralink/machine.h>
 #include <asm/mach-ralink/dev_gpio_leds.h>
+#include <asm/mach-ralink/rt305x.h>
+#include <asm/mach-ralink/rt305x_regs.h>
 
 #include "devices.h"
 
+#define V22RW_2X2_GPIO_BUTTON_WPS	0
+#define V22RW_2X2_GPIO_BUTTON_SWRST	10
 #define V22RW_2X2_GPIO_LED_SECURITY	13
 #define V22RW_2X2_GPIO_LED_WPS		14
 
@@ -78,6 +82,8 @@ static struct gpio_led v22rw_2x2_leds_gpio[] __initdata = {
 
 static void __init v22rw_2x2_init(void)
 {
+	rt305x_gpio_init(RT305X_GPIO_MODE_GPIO << RT305X_GPIO_MODE_UART0_SHIFT);
+
 	rt305x_register_flash(0, &v22rw_2x2_flash_data);
 
 	ramips_register_gpio_leds(-1, ARRAY_SIZE(v22rw_2x2_leds_gpio),
diff --git a/target/linux/ramips/files/arch/mips/ralink/rt305x/mach-whr-g300n.c b/target/linux/ramips/files/arch/mips/ralink/rt305x/mach-whr-g300n.c
index 97fe85737..2c2f44469 100644
--- a/target/linux/ramips/files/arch/mips/ralink/rt305x/mach-whr-g300n.c
+++ b/target/linux/ramips/files/arch/mips/ralink/rt305x/mach-whr-g300n.c
@@ -18,6 +18,8 @@
 #include <asm/mips_machine.h>
 #include <asm/mach-ralink/machine.h>
 #include <asm/mach-ralink/dev_gpio_leds.h>
+#include <asm/mach-ralink/rt305x.h>
+#include <asm/mach-ralink/rt305x_regs.h>
 
 #include "devices.h"
 
@@ -87,6 +89,8 @@ static struct gpio_led whr_g300n_leds_gpio[] __initdata = {
 
 static void __init whr_g300n_init(void)
 {
+	rt305x_gpio_init(RT305X_GPIO_MODE_GPIO << RT305X_GPIO_MODE_UART0_SHIFT);
+
 	rt305x_register_flash(0, &whr_g300n_flash_data);
 
 	ramips_register_gpio_leds(-1, ARRAY_SIZE(whr_g300n_leds_gpio),
diff --git a/target/linux/ramips/files/arch/mips/ralink/rt305x/rt305x.c b/target/linux/ramips/files/arch/mips/ralink/rt305x/rt305x.c
index 249da36b0..002aaebab 100644
--- a/target/linux/ramips/files/arch/mips/ralink/rt305x/rt305x.c
+++ b/target/linux/ramips/files/arch/mips/ralink/rt305x/rt305x.c
@@ -14,6 +14,7 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/module.h>
+#include <linux/gpio.h>
 
 #include <asm/mach-ralink/common.h>
 #include <asm/mach-ralink/rt305x.h>
@@ -66,3 +67,60 @@ void __init rt305x_detect_sys_freq(void)
 
 	rt305x_sys_freq = rt305x_cpu_freq / 3;
 }
+
+static void rt305x_gpio_reserve(int first, int last)
+{
+	for (; first <= last; first++)
+		gpio_request(first, "reserved");
+}
+
+void __init rt305x_gpio_init(u32 mode)
+{
+	u32 t;
+
+	rt305x_sysc_wr(mode, SYSC_REG_GPIO_MODE);
+
+	ramips_gpio_init();
+	if ((mode & RT305X_GPIO_MODE_I2C) == 0)
+		rt305x_gpio_reserve(RT305X_GPIO_I2C_SD, RT305X_GPIO_I2C_SCLK);
+
+	if ((mode & RT305X_GPIO_MODE_SPI) == 0)
+		rt305x_gpio_reserve(RT305X_GPIO_SPI_EN, RT305X_GPIO_SPI_CLK);
+
+	t = mode >> RT305X_GPIO_MODE_UART0_SHIFT;
+	t &= RT305X_GPIO_MODE_UART0_MASK;
+	switch (t) {
+	case RT305X_GPIO_MODE_UARTF:
+	case RT305X_GPIO_MODE_PCM_UARTF:
+	case RT305X_GPIO_MODE_PCM_I2S:
+	case RT305X_GPIO_MODE_I2S_UARTF:
+		rt305x_gpio_reserve(RT305X_GPIO_7, RT305X_GPIO_14);
+		break;
+	case RT305X_GPIO_MODE_PCM_GPIO:
+		rt305x_gpio_reserve(RT305X_GPIO_10, RT305X_GPIO_14);
+		break;
+	case RT305X_GPIO_MODE_GPIO_UARTF:
+	case RT305X_GPIO_MODE_GPIO_I2S:
+		rt305x_gpio_reserve(RT305X_GPIO_7, RT305X_GPIO_10);
+		break;
+	}
+
+	if ((mode & RT305X_GPIO_MODE_UART1) == 0)
+		rt305x_gpio_reserve(RT305X_GPIO_UART1_TXD,
+				    RT305X_GPIO_UART1_RXD);
+
+	if ((mode & RT305X_GPIO_MODE_JTAG) == 0)
+		rt305x_gpio_reserve(RT305X_GPIO_JTAG_TDO, RT305X_GPIO_JTAG_TDI);
+
+	if ((mode & RT305X_GPIO_MODE_MDIO) == 0)
+		rt305x_gpio_reserve(RT305X_GPIO_MDIO_MDC,
+				    RT305X_GPIO_MDIO_MDIO);
+
+	if ((mode & RT305X_GPIO_MODE_SDRAM) == 0)
+		rt305x_gpio_reserve(RT305X_GPIO_SDRAM_MD16,
+				    RT305X_GPIO_SDRAM_MD31);
+
+	if ((mode & RT305X_GPIO_MODE_RGMII) == 0)
+		rt305x_gpio_reserve(RT305X_GPIO_GE0_TXD0,
+				    RT305X_GPIO_GE0_RXCLK);
+}
-- 
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