sunxi: rsb: Move rsb_set_device_mode() call to rsb_init()

It turns out that the device_mode_data is rsb specific, rather then slave
specific, so integrate the rsb_set_device_mode() call into rsb_init().

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>

arch/arm/cpu/armv7/sunxi/rsb.c

@@ -16,6 +16,8 @@
 #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
@@ -53,7 +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;
@@ -65,6 +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)
@@ -99,13 +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)

arch/arm/include/asm/arch-sunxi/rsb.h

@@ -37,6 +37,7 @@ struct sunxi_rsb_reg {
 #define RSB_STAT_TERR_INT		(1 << 1)
 #define RSB_STAT_LBSY_INT		(1 << 2)
 
+#define RSB_DMCR_DEVICE_MODE_DATA	0x7c3e00
 #define RSB_DMCR_DEVICE_MODE_START	(1 << 31)
 
 #define RSB_CMD_BYTE_WRITE		0x4e
@@ -46,8 +47,7 @@ struct sunxi_rsb_reg {
 #define RSB_DEVADDR_RUNTIME_ADDR(x)	((x) << 16)
 #define RSB_DEVADDR_DEVICE_ADDR(x)	((x) << 0)
 
-void rsb_init(void);
-int rsb_set_device_mode(u32 device_mode_data);
+int rsb_init(void);
 int rsb_set_device_address(u16 device_addr, u16 runtime_addr);
 int rsb_write(const u16 runtime_device_addr, const u8 reg_addr, u8 data);
 int rsb_read(const u16 runtime_device_addr, const u8 reg_addr, u8 *data);

drivers/power/axp221.c

@@ -29,9 +29,7 @@ static int pmic_bus_init(void)
 #else
 	int ret;
 
-	rsb_init();
-
-	ret = rsb_set_device_mode(AXP223_DEVICE_MODE_DATA);
+	ret = rsb_init();
 	if (ret)
 		return ret;
 

include/axp221.h

@@ -12,7 +12,6 @@
 
 #define AXP223_DEVICE_ADDR 0x3a3
 #define AXP223_RUNTIME_ADDR 0x2d
-#define AXP223_DEVICE_MODE_DATA 0x7c3e00
 
 /* Page 0 addresses */
 #define AXP221_CHIP_ID		0x03