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

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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>
This commit is contained in:
Hans de Goede 2015-01-26 16:59:12 +01:00
parent d35488c735
commit 37d46dd3c4
4 changed files with 11 additions and 9 deletions
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11
arch/arm/cpu/armv7/sunxi/rsb.c
View file

@ -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)

4
arch/arm/include/asm/arch-sunxi/rsb.h
View file

@ -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);

4
drivers/power/axp221.c
View file

@ -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;

1
include/axp221.h
View file

@ -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