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authorjuhosg <juhosg@3c298f89-4303-0410-b956-a3cf2f4a3e73>2009-09-04 15:08:26 +0000
committerjuhosg <juhosg@3c298f89-4303-0410-b956-a3cf2f4a3e73>2009-09-04 15:08:26 +0000
commit2f3b768d56c443c04e57ada7ac6893ef7c8ab7bc (patch)
treeccf6a5b81e9dc2421a4387d63ac2735067130ab1 /target/linux/ramips/files/arch/mips/ralink/rt305x/rt305x.c
parent3ff4f7ce16ee4fa844ab699d64c1b8f8f8065c07 (diff)
[ramips] add GPIO configuration feature
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@17512 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/ramips/files/arch/mips/ralink/rt305x/rt305x.c')
-rw-r--r--target/linux/ramips/files/arch/mips/ralink/rt305x/rt305x.c58
1 files changed, 58 insertions, 0 deletions
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 249da36b06..002aaebabd 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);
+}