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| author | Hans de Goede <hdegoede@redhat.com> | 2014-11-25 16:37:52 +0100 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2015-01-14 14:56:36 +0100 |
| commit | f3fba5665b066615a39d157a4a4970824695b91d (patch) | |
| tree | 92d99838c315cec480bb45f977869903bd616df5 | |
| parent | fc3a832576ce7bb597b1823935bfb7dcca235c3c (diff) | |
| download | u-boot-imx-f3fba5665b066615a39d157a4a4970824695b91d.zip u-boot-imx-f3fba5665b066615a39d157a4a4970824695b91d.tar.gz u-boot-imx-f3fba5665b066615a39d157a4a4970824695b91d.tar.bz2 | |
sun6i: axp221: Add axp221_get_sid function
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>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
| -rw-r--r-- | drivers/power/axp221.c | 27 | ||||
| -rw-r--r-- | include/axp221.h | 6 |
2 files changed, 33 insertions, 0 deletions
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 26d25ff..ade9066 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 0x29 #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); |