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authorHans de Goede <hdegoede@redhat.com>2014-12-13 14:02:38 +0100
committerHans de Goede <hdegoede@redhat.com>2015-01-14 14:56:37 +0100
commit50e0d5e60b0a4c2c9de5ba332be1c36a31d728d3 (patch)
tree82b9346c2a4df13eaa3a26e81299e2e24be17a35 /drivers
parent1262a85fe36936f404dc2deccc3ebaacebb612c5 (diff)
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sunxi: axp221: Explicitly turn off unused voltages
Explicitly turn off unused voltages, rather then leaving them as is. Likewise explictly enabled the dcdc convertors, rather then assuming they are already enabled at boot. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/power/Kconfig16
-rw-r--r--drivers/power/axp221.c102
2 files changed, 104 insertions, 14 deletions
diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig
index e132759..ef0c093 100644
--- a/drivers/power/Kconfig
+++ b/drivers/power/Kconfig
@@ -19,9 +19,9 @@ config AXP221_DCDC1_VOLT
config AXP221_DLDO1_VOLT
int "axp221 dldo1 voltage"
depends on AXP221_POWER
- default -1
+ default 0
---help---
- Set the voltage (mV) to program the axp221 dldo1 at, set to -1 to
+ Set the voltage (mV) to program the axp221 dldo1 at, set to 0 to
disable dldo1. On sun6i (A31) boards with ethernet this is often used
to power the ethernet phy. On sun8i (A23) boards this is often used to
power the wifi.
@@ -29,17 +29,17 @@ config AXP221_DLDO1_VOLT
config AXP221_DLDO4_VOLT
int "axp221 dldo4 voltage"
depends on AXP221_POWER
- default -1
+ default 0
---help---
- Set the voltage (mV) to program the axp221 dldo4 at, set to -1 to
+ Set the voltage (mV) to program the axp221 dldo4 at, set to 0 to
disable dldo4.
config AXP221_ALDO1_VOLT
int "axp221 aldo1 voltage"
depends on AXP221_POWER
- default -1
+ default 0
---help---
- Set the voltage (mV) to program the axp221 aldo1 at, set to -1 to
+ Set the voltage (mV) to program the axp221 aldo1 at, set to 0 to
disable aldo1. On sun6i (A31) boards which have a wifi module this is
often used to power the wifi module.
@@ -49,7 +49,7 @@ config AXP221_ALDO2_VOLT
default 1800 if MACH_SUN6I
default 2500 if MACH_SUN8I
---help---
- Set the voltage (mV) to program the axp221 aldo2 at, set to -1 to
+ Set the voltage (mV) to program the axp221 aldo2 at, set to 0 to
disable aldo2. On sun6i (A31) boards this is typically connected to
VCC-PM, which powers the port M gpios, and should be set to 1.8V.
On sun8i (A23) this is typically connected to VDD-DLL and must be
@@ -60,6 +60,6 @@ config AXP221_ALDO3_VOLT
depends on AXP221_POWER
default 3000
---help---
- Set the voltage (mV) to program the axp221 aldo3 at, set to -1 to
+ Set the voltage (mV) to program the axp221 aldo3 at, set to 0 to
disable aldo3. This is typically connected to VCC-PLL and AVCC and
must be set to 3V.
diff --git a/drivers/power/axp221.c b/drivers/power/axp221.c
index 4667579..1fda19a 100644
--- a/drivers/power/axp221.c
+++ b/drivers/power/axp221.c
@@ -80,45 +80,107 @@ static int axp221_setbits(u8 reg, u8 bits)
return pmic_bus_write(reg, val);
}
+static int axp221_clrbits(u8 reg, u8 bits)
+{
+ int ret;
+ u8 val;
+
+ ret = pmic_bus_read(reg, &val);
+ if (ret)
+ return ret;
+
+ val &= ~bits;
+ return pmic_bus_write(reg, val);
+}
+
int axp221_set_dcdc1(unsigned int mvolt)
{
int ret;
u8 cfg = axp221_mvolt_to_cfg(mvolt, 1600, 3400, 100);
+ if (mvolt == 0)
+ return axp221_clrbits(AXP221_OUTPUT_CTRL1,
+ AXP221_OUTPUT_CTRL1_DCDC1_EN);
+
ret = pmic_bus_write(AXP221_DCDC1_CTRL, cfg);
if (ret)
return ret;
- return axp221_setbits(AXP221_OUTPUT_CTRL2,
- AXP221_OUTPUT_CTRL2_DCDC1_EN);
+ ret = axp221_setbits(AXP221_OUTPUT_CTRL2,
+ AXP221_OUTPUT_CTRL2_DCDC1SW_EN);
+ if (ret)
+ return ret;
+
+ return axp221_setbits(AXP221_OUTPUT_CTRL1,
+ AXP221_OUTPUT_CTRL1_DCDC1_EN);
}
int axp221_set_dcdc2(unsigned int mvolt)
{
+ int ret;
u8 cfg = axp221_mvolt_to_cfg(mvolt, 600, 1540, 20);
- return pmic_bus_write(AXP221_DCDC2_CTRL, cfg);
+ if (mvolt == 0)
+ return axp221_clrbits(AXP221_OUTPUT_CTRL1,
+ AXP221_OUTPUT_CTRL1_DCDC2_EN);
+
+ ret = pmic_bus_write(AXP221_DCDC2_CTRL, cfg);
+ if (ret)
+ return ret;
+
+ return axp221_setbits(AXP221_OUTPUT_CTRL1,
+ AXP221_OUTPUT_CTRL1_DCDC2_EN);
}
int axp221_set_dcdc3(unsigned int mvolt)
{
+ int ret;
u8 cfg = axp221_mvolt_to_cfg(mvolt, 600, 1860, 20);
- return pmic_bus_write(AXP221_DCDC3_CTRL, cfg);
+ if (mvolt == 0)
+ return axp221_clrbits(AXP221_OUTPUT_CTRL1,
+ AXP221_OUTPUT_CTRL1_DCDC3_EN);
+
+ ret = pmic_bus_write(AXP221_DCDC3_CTRL, cfg);
+ if (ret)
+ return ret;
+
+ return axp221_setbits(AXP221_OUTPUT_CTRL1,
+ AXP221_OUTPUT_CTRL1_DCDC3_EN);
}
int axp221_set_dcdc4(unsigned int mvolt)
{
+ int ret;
u8 cfg = axp221_mvolt_to_cfg(mvolt, 600, 1540, 20);
- return pmic_bus_write(AXP221_DCDC4_CTRL, cfg);
+ if (mvolt == 0)
+ return axp221_clrbits(AXP221_OUTPUT_CTRL1,
+ AXP221_OUTPUT_CTRL1_DCDC4_EN);
+
+ ret = pmic_bus_write(AXP221_DCDC4_CTRL, cfg);
+ if (ret)
+ return ret;
+
+ return axp221_setbits(AXP221_OUTPUT_CTRL1,
+ AXP221_OUTPUT_CTRL1_DCDC4_EN);
}
int axp221_set_dcdc5(unsigned int mvolt)
{
+ int ret;
u8 cfg = axp221_mvolt_to_cfg(mvolt, 1000, 2550, 50);
- return pmic_bus_write(AXP221_DCDC5_CTRL, cfg);
+ if (mvolt == 0)
+ return axp221_clrbits(AXP221_OUTPUT_CTRL1,
+ AXP221_OUTPUT_CTRL1_DCDC5_EN);
+
+ ret = pmic_bus_write(AXP221_DCDC5_CTRL, cfg);
+ if (ret)
+ return ret;
+
+ return axp221_setbits(AXP221_OUTPUT_CTRL1,
+ AXP221_OUTPUT_CTRL1_DCDC5_EN);
}
int axp221_set_dldo1(unsigned int mvolt)
@@ -126,6 +188,10 @@ int axp221_set_dldo1(unsigned int mvolt)
int ret;
u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
+ if (mvolt == 0)
+ return axp221_clrbits(AXP221_OUTPUT_CTRL2,
+ AXP221_OUTPUT_CTRL2_DLDO1_EN);
+
ret = pmic_bus_write(AXP221_DLDO1_CTRL, cfg);
if (ret)
return ret;
@@ -139,6 +205,10 @@ int axp221_set_dldo2(unsigned int mvolt)
int ret;
u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
+ if (mvolt == 0)
+ return axp221_clrbits(AXP221_OUTPUT_CTRL2,
+ AXP221_OUTPUT_CTRL2_DLDO2_EN);
+
ret = pmic_bus_write(AXP221_DLDO2_CTRL, cfg);
if (ret)
return ret;
@@ -152,6 +222,10 @@ int axp221_set_dldo3(unsigned int mvolt)
int ret;
u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
+ if (mvolt == 0)
+ return axp221_clrbits(AXP221_OUTPUT_CTRL2,
+ AXP221_OUTPUT_CTRL2_DLDO3_EN);
+
ret = pmic_bus_write(AXP221_DLDO3_CTRL, cfg);
if (ret)
return ret;
@@ -165,6 +239,10 @@ int axp221_set_dldo4(unsigned int mvolt)
int ret;
u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
+ if (mvolt == 0)
+ return axp221_clrbits(AXP221_OUTPUT_CTRL2,
+ AXP221_OUTPUT_CTRL2_DLDO4_EN);
+
ret = pmic_bus_write(AXP221_DLDO4_CTRL, cfg);
if (ret)
return ret;
@@ -178,6 +256,10 @@ int axp221_set_aldo1(unsigned int mvolt)
int ret;
u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
+ if (mvolt == 0)
+ return axp221_clrbits(AXP221_OUTPUT_CTRL1,
+ AXP221_OUTPUT_CTRL1_ALDO1_EN);
+
ret = pmic_bus_write(AXP221_ALDO1_CTRL, cfg);
if (ret)
return ret;
@@ -191,6 +273,10 @@ int axp221_set_aldo2(unsigned int mvolt)
int ret;
u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
+ if (mvolt == 0)
+ return axp221_clrbits(AXP221_OUTPUT_CTRL1,
+ AXP221_OUTPUT_CTRL1_ALDO2_EN);
+
ret = pmic_bus_write(AXP221_ALDO2_CTRL, cfg);
if (ret)
return ret;
@@ -204,6 +290,10 @@ int axp221_set_aldo3(unsigned int mvolt)
int ret;
u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
+ if (mvolt == 0)
+ return axp221_clrbits(AXP221_OUTPUT_CTRL3,
+ AXP221_OUTPUT_CTRL3_ALDO3_EN);
+
ret = pmic_bus_write(AXP221_ALDO3_CTRL, cfg);
if (ret)
return ret;