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| author | Hans de Goede <hdegoede@redhat.com> | 2015-10-04 12:01:17 +0200 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2015-10-20 18:40:27 +0200 |
| commit | beba401f02e1a250604e7203c0fe4727f55d124c (patch) | |
| tree | 31f9c690490bd0467af9d954d89e404c074aad2b /drivers/power | |
| parent | 03f8ae37194f5c2269ebb41236580cf37d090be0 (diff) | |
| download | u-boot-imx-beba401f02e1a250604e7203c0fe4727f55d124c.zip u-boot-imx-beba401f02e1a250604e7203c0fe4727f55d124c.tar.gz u-boot-imx-beba401f02e1a250604e7203c0fe4727f55d124c.tar.bz2 | |
sunxi: power: Add support for disabling axp209 regulators
Add support for disabling the regulators found on the axp209 pmic.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
Diffstat (limited to 'drivers/power')
| -rw-r--r-- | drivers/power/axp209.c | 50 |
1 files changed, 46 insertions, 4 deletions
diff --git a/drivers/power/axp209.c b/drivers/power/axp209.c index bb5d08b..71aa000 100644 --- a/drivers/power/axp209.c +++ b/drivers/power/axp209.c @@ -24,6 +24,14 @@ int axp_set_dcdc2(unsigned int mvolt) int rc; u8 cfg, current; + if (mvolt == 0) + return pmic_bus_clrbits(AXP209_OUTPUT_CTRL, + AXP209_OUTPUT_CTRL_DCDC2); + + rc = pmic_bus_setbits(AXP209_OUTPUT_CTRL, AXP209_OUTPUT_CTRL_DCDC2); + if (rc) + return rc; + cfg = axp209_mvolt_to_cfg(mvolt, 700, 2275, 25); /* Do we really need to be this gentle? It has built-in voltage slope */ @@ -45,8 +53,17 @@ int axp_set_dcdc2(unsigned int mvolt) int axp_set_dcdc3(unsigned int mvolt) { u8 cfg = axp209_mvolt_to_cfg(mvolt, 700, 3500, 25); + int rc; + + if (mvolt == 0) + return pmic_bus_clrbits(AXP209_OUTPUT_CTRL, + AXP209_OUTPUT_CTRL_DCDC3); - return pmic_bus_write(AXP209_DCDC3_VOLTAGE, cfg); + rc = pmic_bus_write(AXP209_DCDC3_VOLTAGE, cfg); + if (rc) + return rc; + + return pmic_bus_setbits(AXP209_OUTPUT_CTRL, AXP209_OUTPUT_CTRL_DCDC3); } int axp_set_aldo2(unsigned int mvolt) @@ -54,6 +71,10 @@ int axp_set_aldo2(unsigned int mvolt) int rc; u8 cfg, reg; + if (mvolt == 0) + return pmic_bus_clrbits(AXP209_OUTPUT_CTRL, + AXP209_OUTPUT_CTRL_LDO2); + cfg = axp209_mvolt_to_cfg(mvolt, 1800, 3300, 100); rc = pmic_bus_read(AXP209_LDO24_VOLTAGE, ®); @@ -62,19 +83,32 @@ int axp_set_aldo2(unsigned int mvolt) /* LDO2 configuration is in upper 4 bits */ reg = (reg & 0x0f) | (cfg << 4); - return pmic_bus_write(AXP209_LDO24_VOLTAGE, reg); + rc = pmic_bus_write(AXP209_LDO24_VOLTAGE, reg); + if (rc) + return rc; + + return pmic_bus_setbits(AXP209_OUTPUT_CTRL, AXP209_OUTPUT_CTRL_LDO2); } int axp_set_aldo3(unsigned int mvolt) { u8 cfg; + int rc; + + if (mvolt == 0) + return pmic_bus_clrbits(AXP209_OUTPUT_CTRL, + AXP209_OUTPUT_CTRL_LDO3); if (mvolt == -1) cfg = 0x80; /* determined by LDO3IN pin */ else cfg = axp209_mvolt_to_cfg(mvolt, 700, 3500, 25); - return pmic_bus_write(AXP209_LDO3_VOLTAGE, cfg); + rc = pmic_bus_write(AXP209_LDO3_VOLTAGE, cfg); + if (rc) + return rc; + + return pmic_bus_setbits(AXP209_OUTPUT_CTRL, AXP209_OUTPUT_CTRL_LDO3); } int axp_set_aldo4(unsigned int mvolt) @@ -86,6 +120,10 @@ int axp_set_aldo4(unsigned int mvolt) }; u8 cfg, reg; + if (mvolt == 0) + return pmic_bus_clrbits(AXP209_OUTPUT_CTRL, + AXP209_OUTPUT_CTRL_LDO4); + /* Translate mvolt to register cfg value, requested <= selected */ for (cfg = 15; vindex[cfg] > mvolt && cfg > 0; cfg--); @@ -95,7 +133,11 @@ int axp_set_aldo4(unsigned int mvolt) /* LDO4 configuration is in lower 4 bits */ reg = (reg & 0xf0) | (cfg << 0); - return pmic_bus_write(AXP209_LDO24_VOLTAGE, reg); + rc = pmic_bus_write(AXP209_LDO24_VOLTAGE, reg); + if (rc) + return rc; + + return pmic_bus_setbits(AXP209_OUTPUT_CTRL, AXP209_OUTPUT_CTRL_LDO4); } int axp_init(void) |