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sunxi: axp: Add support for i2c based PMICs to the pmic-bus helpers

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Add support for the axp152 and axp209 PMICs to the pmic register access
helpers. This is a preparation patch for moving the axp gpio code to a
separate gpio driver.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
This commit is contained in:
Hans de Goede 2015-04-25 22:18:09 +02:00
parent 1d624a4f08
commit a536077def
2 changed files with 29 additions and 8 deletions
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2
arch/arm/cpu/armv7/sunxi/Makefile
View file

@ -27,6 +27,8 @@ obj-$(CONFIG_MACH_SUN7I) += clock_sun4i.o
obj-$(CONFIG_MACH_SUN8I) += clock_sun6i.o
obj-$(CONFIG_MACH_SUN9I) += clock_sun9i.o
obj-$(CONFIG_AXP152_POWER) += pmic_bus.o
obj-$(CONFIG_AXP209_POWER) += pmic_bus.o
obj-$(CONFIG_AXP221_POWER) += pmic_bus.o
ifndef CONFIG_SPL_BUILD

35
arch/arm/cpu/armv7/sunxi/pmic_bus.c
View file

@ -12,8 +12,13 @@
#include <common.h>
#include <asm/arch/p2wi.h>
#include <asm/arch/rsb.h>
#include <i2c.h>
#include <asm/arch/pmic_bus.h>
#define AXP152_I2C_ADDR 0x30
#define AXP209_I2C_ADDR 0x34
#define AXP221_CHIP_ADDR 0x68
#define AXP221_CTRL_ADDR 0x3e
#define AXP221_INIT_DATA 0x3e
@ -25,24 +30,26 @@ int pmic_bus_init(void)
{
/* This cannot be 0 because it is used in SPL before BSS is ready */
static int needs_init = 1;
int ret;
__maybe_unused int ret;
if (!needs_init)
return 0;
#ifdef CONFIG_MACH_SUN6I
#ifdef CONFIG_AXP221_POWER
# ifdef CONFIG_MACH_SUN6I
p2wi_init();
ret = p2wi_change_to_p2wi_mode(AXP221_CHIP_ADDR, AXP221_CTRL_ADDR,
AXP221_INIT_DATA);
#else
# else
ret = rsb_init();
if (ret)
return ret;
ret = rsb_set_device_address(AXP223_DEVICE_ADDR, AXP223_RUNTIME_ADDR);
#endif
# endif
if (ret)
return ret;
#endif
needs_init = 0;
return 0;
@ -50,19 +57,31 @@ int pmic_bus_init(void)
int pmic_bus_read(u8 reg, u8 *data)
{
#ifdef CONFIG_MACH_SUN6I
#ifdef CONFIG_AXP152_POWER
return i2c_read(AXP152_I2C_ADDR, reg, 1, data, 1);
#elif defined CONFIG_AXP209_POWER
return i2c_read(AXP209_I2C_ADDR, reg, 1, data, 1);
#elif defined CONFIG_AXP221_POWER
# ifdef CONFIG_MACH_SUN6I
return p2wi_read(reg, data);
#else
# else
return rsb_read(AXP223_RUNTIME_ADDR, reg, data);
# endif
#endif
}
int pmic_bus_write(u8 reg, u8 data)
{
#ifdef CONFIG_MACH_SUN6I
#ifdef CONFIG_AXP152_POWER
return i2c_write(AXP152_I2C_ADDR, reg, 1, &data, 1);
#elif defined CONFIG_AXP209_POWER
return i2c_write(AXP209_I2C_ADDR, reg, 1, &data, 1);
#elif defined CONFIG_AXP221_POWER
# ifdef CONFIG_MACH_SUN6I
return p2wi_write(reg, data);
#else
# else
return rsb_write(AXP223_RUNTIME_ADDR, reg, data);
# endif
#endif
}