hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

mfd: as3722: Disable auto-power-on when AC OK 

On ams AS3722, power on when AC OK is enabled by default.
Making this option as disable by default and enable only
when platform need this explicitly.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Reviewed-by: Bibek Basu <bbasu@nvidia.com>
Tested-by: Bibek Basu <bbasu@nvidia.com>
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Marcel Ziswiler 2018-07-03 17:04:11 +02:00 committed by Lee Jones
parent 99e19b7c48
commit c8fda5bfa9
3 changed files with 17 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
Documentation/devicetree/bindings/mfd/as3722.txt
View File

@ -20,6 +20,8 @@ Optional properties:
- ams,enable-internal-i2c-pullup: Boolean property, to enable internal pullup on
i2c scl/sda pins. Missing this will disable internal pullup on i2c
scl/sda lines.
- ams,enable-ac-ok-power-on: Boolean property, to enable exit out of power off
mode with AC_OK pin (pin enabled in power off mode).
Optional submodule and their properties:
=======================================

12
drivers/mfd/as3722.c
View File

@ -349,6 +349,8 @@ static int as3722_i2c_of_probe(struct i2c_client *i2c,
"ams,enable-internal-int-pullup");
as3722->en_intern_i2c_pullup = of_property_read_bool(np,
"ams,enable-internal-i2c-pullup");
as3722->en_ac_ok_pwr_on = of_property_read_bool(np,
"ams,enable-ac-ok-power-on");
as3722->irq_flags = irqd_get_trigger_type(irq_data);
dev_dbg(&i2c->dev, "IRQ flags are 0x%08lx\n", as3722->irq_flags);
return 0;
@ -360,6 +362,7 @@ static int as3722_i2c_probe(struct i2c_client *i2c,
struct as3722 *as3722;
unsigned long irq_flags;
int ret;
u8 val = 0;
as3722 = devm_kzalloc(&i2c->dev, sizeof(struct as3722), GFP_KERNEL);
if (!as3722)
@ -398,6 +401,15 @@ static int as3722_i2c_probe(struct i2c_client *i2c,
if (ret < 0)
return ret;
if (as3722->en_ac_ok_pwr_on)
val = AS3722_CTRL_SEQU1_AC_OK_PWR_ON;
ret = as3722_update_bits(as3722, AS3722_CTRL_SEQU1_REG,
AS3722_CTRL_SEQU1_AC_OK_PWR_ON, val);
if (ret < 0) {
dev_err(as3722->dev, "CTRLsequ1 update failed: %d\n", ret);
return ret;
}
ret = devm_mfd_add_devices(&i2c->dev, -1, as3722_devs,
ARRAY_SIZE(as3722_devs), NULL, 0,
regmap_irq_get_domain(as3722->irq_data));

3
include/linux/mfd/as3722.h
View File

@ -296,6 +296,8 @@
#define AS3722_ADC1_CONV_NOTREADY BIT(7)
#define AS3722_ADC1_SOURCE_SELECT_MASK 0x1F
#define AS3722_CTRL_SEQU1_AC_OK_PWR_ON BIT(0)
/* GPIO modes */
#define AS3722_GPIO_MODE_MASK 0x07
#define AS3722_GPIO_MODE_INPUT 0x00
@ -391,6 +393,7 @@ struct as3722 {
unsigned long irq_flags;
bool en_intern_int_pullup;
bool en_intern_i2c_pullup;
bool en_ac_ok_pwr_on;
struct regmap_irq_chip_data *irq_data;
};