For sun6i the SID is stored in the pmic, rather then in the SoC itself, add a function to retreive the sid.
Signed-off-by: Hans de Goede hdegoede@redhat.com --- drivers/power/axp221.c | 27 +++++++++++++++++++++++++++ include/axp221.h | 6 ++++++ 2 files changed, 33 insertions(+)
diff --git a/drivers/power/axp221.c b/drivers/power/axp221.c index 941193a..826567a 100644 --- a/drivers/power/axp221.c +++ b/drivers/power/axp221.c @@ -184,3 +184,30 @@ int axp221_init(void)
return 0; } + +int axp221_get_sid(unsigned int *sid) +{ + u8 *dest = (u8 *)sid; + int i, ret; + + ret = axp221_init(); + if (ret) + return ret; + + ret = p2wi_write(AXP221_PAGE, 1); + if (ret) + return ret; + + for (i = 0; i < 16; i++) { + ret = p2wi_read(AXP221_SID + i, &dest[i]); + if (ret) + return ret; + } + + p2wi_write(AXP221_PAGE, 0); + + for (i = 0; i < 4; i++) + sid[i] = be32_to_cpu(sid[i]); + + return 0; +} diff --git a/include/axp221.h b/include/axp221.h index e3b4409..db219c6 100644 --- a/include/axp221.h +++ b/include/axp221.h @@ -10,6 +10,7 @@ #define AXP221_CTRL_ADDR 0x3e #define AXP221_INIT_DATA 0x3e
+/* Page 0 addresses */ #define AXP221_CHIP_ID 0x03 #define AXP221_OUTPUT_CTRL1 0x10 #define AXP221_OUTPUT_CTRL1_ALDO1_EN (1 << 6) @@ -34,6 +35,10 @@ #define AXP221_ALDO1_CTRL 0x28 #define AXP221_ALDO2_CTRL 0x28 #define AXP221_ALDO3_CTRL 0x2a +#define AXP221_PAGE 0xff + +/* Page 1 addresses */ +#define AXP221_SID 0x20
int axp221_set_dcdc1(unsigned int mvolt); int axp221_set_dcdc2(unsigned int mvolt); @@ -48,3 +53,4 @@ int axp221_set_aldo1(unsigned int mvolt); int axp221_set_aldo2(unsigned int mvolt); int axp221_set_aldo3(unsigned int mvolt); int axp221_init(void); +int axp221_get_sid(unsigned int *sid);