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Diffstat (limited to 'arch/arm/cpu/armv7/sunxi/rsb.c')
-rw-r--r--arch/arm/cpu/armv7/sunxi/rsb.c22
1 files changed, 19 insertions, 3 deletions
diff --git a/arch/arm/cpu/armv7/sunxi/rsb.c b/arch/arm/cpu/armv7/sunxi/rsb.c
index b72bb9d..b00befb 100644
--- a/arch/arm/cpu/armv7/sunxi/rsb.c
+++ b/arch/arm/cpu/armv7/sunxi/rsb.c
@@ -16,14 +16,27 @@
#include <asm/arch/prcm.h>
#include <asm/arch/rsb.h>
+static int rsb_set_device_mode(void);
+
static void rsb_cfg_io(void)
{
+#ifdef CONFIG_MACH_SUN8I
sunxi_gpio_set_cfgpin(SUNXI_GPL(0), SUN8I_GPL0_R_RSB_SCK);
sunxi_gpio_set_cfgpin(SUNXI_GPL(1), SUN8I_GPL1_R_RSB_SDA);
sunxi_gpio_set_pull(SUNXI_GPL(0), 1);
sunxi_gpio_set_pull(SUNXI_GPL(1), 1);
sunxi_gpio_set_drv(SUNXI_GPL(0), 2);
sunxi_gpio_set_drv(SUNXI_GPL(1), 2);
+#elif defined CONFIG_MACH_SUN9I
+ sunxi_gpio_set_cfgpin(SUNXI_GPN(0), SUN9I_GPN0_R_RSB_SCK);
+ sunxi_gpio_set_cfgpin(SUNXI_GPN(1), SUN9I_GPN1_R_RSB_SDA);
+ sunxi_gpio_set_pull(SUNXI_GPN(0), 1);
+ sunxi_gpio_set_pull(SUNXI_GPN(1), 1);
+ sunxi_gpio_set_drv(SUNXI_GPN(0), 2);
+ sunxi_gpio_set_drv(SUNXI_GPN(1), 2);
+#else
+#error unsupported MACH_SUNXI
+#endif
}
static void rsb_set_clk(void)
@@ -42,7 +55,7 @@ static void rsb_set_clk(void)
writel((cd_odly << 8) | div, &rsb->ccr);
}
-void rsb_init(void)
+int rsb_init(void)
{
struct sunxi_rsb_reg * const rsb =
(struct sunxi_rsb_reg *)SUNXI_RSB_BASE;
@@ -54,6 +67,8 @@ void rsb_init(void)
writel(RSB_CTRL_SOFT_RST, &rsb->ctrl);
rsb_set_clk();
+
+ return rsb_set_device_mode();
}
static int rsb_await_trans(void)
@@ -88,13 +103,14 @@ static int rsb_await_trans(void)
return ret;
}
-int rsb_set_device_mode(u32 device_mode_data)
+static int rsb_set_device_mode(void)
{
struct sunxi_rsb_reg * const rsb =
(struct sunxi_rsb_reg *)SUNXI_RSB_BASE;
unsigned long tmo = timer_get_us() + 1000000;
- writel(RSB_DMCR_DEVICE_MODE_START | device_mode_data, &rsb->dmcr);
+ writel(RSB_DMCR_DEVICE_MODE_START | RSB_DMCR_DEVICE_MODE_DATA,
+ &rsb->dmcr);
while (readl(&rsb->dmcr) & RSB_DMCR_DEVICE_MODE_START) {
if (timer_get_us() > tmo)