The pmic_bus functions are used in both SPL (for regulator setup) and U-Boot proper (for regulator setup, SID access, GPIO, and poweroff).
Currently, pmic_bus conflicts with DM_I2C because it uses the legacy I2C interface. This commit makes pmic_bus dual-compatible with either the legacy I2C functions or the newly-added PMIC_AXP driver (which uses DM_I2C). In turn, this allows platforms to start transitioning to DM_I2C in U-Boot proper, without breaking boards that still depend on the legacy I2C interface for other reasons.
Signed-off-by: Samuel Holland samuel@sholland.org ---
arch/arm/mach-sunxi/Kconfig | 2 ++ arch/arm/mach-sunxi/pmic_bus.c | 19 +++++++++++++++++++ 2 files changed, 21 insertions(+)
diff --git a/arch/arm/mach-sunxi/Kconfig b/arch/arm/mach-sunxi/Kconfig index 12235fabc06..4dd83a2280e 100644 --- a/arch/arm/mach-sunxi/Kconfig +++ b/arch/arm/mach-sunxi/Kconfig @@ -96,6 +96,8 @@ config SUN6I_PRCM
config AXP_PMIC_BUS bool + select DM_PMIC if DM_I2C + select PMIC_AXP if DM_I2C help Select this PMIC bus access helpers for Sunxi platform PRCM or other AXP family PMIC devices. diff --git a/arch/arm/mach-sunxi/pmic_bus.c b/arch/arm/mach-sunxi/pmic_bus.c index a3c3a34b5fb..b0957d7afe5 100644 --- a/arch/arm/mach-sunxi/pmic_bus.c +++ b/arch/arm/mach-sunxi/pmic_bus.c @@ -10,9 +10,11 @@
#include <axp_pmic.h> #include <common.h> +#include <dm.h> #include <asm/arch/p2wi.h> #include <asm/arch/rsb.h> #include <i2c.h> +#include <power/pmic.h> #include <asm/arch/pmic_bus.h>
#define AXP152_I2C_ADDR 0x30 @@ -23,6 +25,9 @@
#define AXP221_CHIP_ADDR 0x68
+#if CONFIG_IS_ENABLED(PMIC_AXP) +static struct udevice *pmic; +#else static int pmic_i2c_address(void) { if (IS_ENABLED(CONFIG_AXP152_POWER)) @@ -33,6 +38,7 @@ static int pmic_i2c_address(void) /* Other AXP2xx and AXP8xx variants */ return AXP209_I2C_ADDR; } +#endif
int pmic_bus_init(void) { @@ -43,6 +49,10 @@ int pmic_bus_init(void) if (!needs_init) return 0;
+#if CONFIG_IS_ENABLED(PMIC_AXP) + ret = uclass_get_device_by_driver(UCLASS_PMIC, DM_DRIVER_GET(axp_pmic), + &pmic); +#else if (IS_ENABLED(CONFIG_SUN6I_P2WI)) { p2wi_init(); ret = p2wi_change_to_p2wi_mode(AXP221_CHIP_ADDR, @@ -56,6 +66,7 @@ int pmic_bus_init(void) ret = rsb_set_device_address(AXP_PMIC_PRI_DEVICE_ADDR, AXP_PMIC_PRI_RUNTIME_ADDR); } +#endif
needs_init = ret;
@@ -64,22 +75,30 @@ int pmic_bus_init(void)
int pmic_bus_read(u8 reg, u8 *data) { +#if CONFIG_IS_ENABLED(PMIC_AXP) + return pmic_read(pmic, reg, data, 1); +#else if (IS_ENABLED(CONFIG_SUN6I_P2WI)) return p2wi_read(reg, data); if (IS_ENABLED(CONFIG_SUN8I_RSB)) return rsb_read(AXP_PMIC_PRI_RUNTIME_ADDR, reg, data);
return i2c_read(pmic_i2c_address(), reg, 1, data, 1); +#endif }
int pmic_bus_write(u8 reg, u8 data) { +#if CONFIG_IS_ENABLED(PMIC_AXP) + return pmic_write(pmic, reg, &data, 1); +#else if (IS_ENABLED(CONFIG_SUN6I_P2WI)) return p2wi_write(reg, data); if (IS_ENABLED(CONFIG_SUN8I_RSB)) return rsb_write(AXP_PMIC_PRI_RUNTIME_ADDR, reg, data);
return i2c_write(pmic_i2c_address(), reg, 1, &data, 1); +#endif }
int pmic_bus_setbits(u8 reg, u8 bits)