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DLKM:control VDD off when sar sensor is off

Browse source 
It's used to save power.
It's only used on Borneo NA

Change-Id: I2aa60149f0a362dc29fc0eded5c509a9fd4ddc7c
Signed-off-by: chenlj2 <chenlj2@motorola.com>
Reviewed-on: https://gerrit.mot.com/1718145
SLTApproved: Slta Waiver
SME-Granted: SME Approvals Granted
Tested-by: Jira Key
Reviewed-by: Jiacheng Ou <oujc1@motorola.com>
Reviewed-by: Guoyue Liu <liugy11@motorola.com>
Reviewed-by: Wang Wang <wangwang1@lenovo.com>
Submit-Approved: Jira Key
This commit is contained in:
chenlj2 2020-08-10 11:00:55 +08:00 • committed by Lijun Chen
commit 6bcd3fe49e
3 changed files with 63 additions and 6 deletions
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4
drivers/misc/abov_mmi_overlay/Kbuild
View file

@ -5,6 +5,10 @@ KERNEL_VERSION_NAME = $(shell basename $(KERNEL_DIR_PATH))
EXTRA_CFLAGS += -Wall
EXTRA_CFLAGS += -I$(TOP)/motorola/kernel/modules/include
ifneq (,$(filter borneo%,$(TARGET_PRODUCT)))
EXTRA_CFLAGS += -DCONFIG_CAPSENSE_CONTROL_VDD
endif
ifneq (,$(KERNEL_DIR_PATH))
EXTRA_CFLAGS += -I$(TOP)/kernel/$(KERNEL_VERSION_NAME)/drivers/base
else

57
drivers/misc/abov_mmi_overlay/abov_sar_mmi_overlay.c
View file

@ -821,6 +821,35 @@ static ssize_t enable_show(struct class *class,
return snprintf(buf, 8, "%d\n", mEnabled);
}
#ifdef CONFIG_CAPSENSE_CONTROL_VDD
static void abov_power(bool on)
{
pabovXX_t this = abov_sar_ptr;
int ret;
if (on) {
ret = regulator_enable(this->board->cap_vdd);
if (ret) {
regulator_put(this->board->cap_vdd);
LOG_ERR("%s: Error %d enable regulator\n",
__func__, ret);
}
this->board->cap_vdd_en = true;
LOG_INFO("cap_vdd regulator is %s\n",
regulator_is_enabled(this->board->cap_vdd) ?
"on" : "off");
SLEEP(100);
} else {
regulator_disable(this->board->cap_vdd);
//regulator_put(this->board->cap_vdd);
this->board->cap_vdd_en = false;
LOG_INFO("cap_vdd regulator is %s\n",
regulator_is_enabled(this->board->cap_vdd) ?
"on" : "off");
}
}
#endif
static ssize_t enable_store(struct class *class,
struct class_attribute *attr,
const char *buf, size_t count)
@ -847,6 +876,10 @@ static ssize_t enable_store(struct class *class,
if (!strncmp(buf, "1", 1)) {
LOG_INFO("enable cap sensor\n");
#ifdef CONFIG_CAPSENSE_CONTROL_VDD
if (!this->board->cap_vdd_en)
abov_power(true);
#endif
initialize(this);
input_report_abs(input_ch0, ABS_DISTANCE, 0);
@ -881,6 +914,10 @@ static ssize_t enable_store(struct class *class,
input_report_abs(input_ch3, ABS_DISTANCE, -1);
input_sync(input_ch3);
}
#ifdef CONFIG_CAPSENSE_CONTROL_VDD
if (this->board->cap_vdd_en)
abov_power(false);
#endif
mEnabled = 0;
} else {
LOG_ERR("unknown enable symbol\n");
@ -912,6 +949,10 @@ static int capsensor_set_enable(struct sensors_classdev *sensors_cdev, unsigned
if (enable == 1) {
LOG_INFO("enable cap sensor: %s\n",sensors_cdev->name);
if(mEnabled == 0){
#ifdef CONFIG_CAPSENSE_CONTROL_VDD
if (!this->board->cap_vdd_en)
abov_power(true);
#endif
initialize(this);
mEnabled = 1;
}
@ -1007,6 +1048,10 @@ static int capsensor_set_enable(struct sensors_classdev *sensors_cdev, unsigned
mEnabled = 0;
write_register(this, ABOV_CTRL_MODE_REG, 0x02);
LOG_INFO("all cap sensor disable,change to STOP mode.\n");
#ifdef CONFIG_CAPSENSE_CONTROL_VDD
if(this->board->cap_vdd_en)
abov_power(false);
#endif
}
} else {
LOG_ERR("unknown enable symbol\n");
@ -1656,8 +1701,12 @@ static void capsense_update_work(struct work_struct *work)
if(mEnabled){
initialize(this);
#ifdef CONFIG_CAPSENSE_CONTROL_VDD
} else if (this->board->cap_vdd_en) {
abov_power(false);
#endif
}
LOG_DBG("%s: update firmware end\n", __func__);
LOG_INFO("%s: update firmware end\n", __func__);
}
static void capsense_fore_update_work(struct work_struct *work)
@ -1681,8 +1730,12 @@ static void capsense_fore_update_work(struct work_struct *work)
if(mEnabled){
initialize(this);
#ifdef CONFIG_CAPSENSE_CONTROL_VDD
} else if (this->board->cap_vdd_en) {
abov_power(false);
#endif
}
LOG_DBG("%s: force update firmware end\n", __func__);
LOG_INFO("%s: force update firmware end\n", __func__);
}

8
include/linux/input/abov_sar_mmi_overlay.h
View file

@ -232,10 +232,10 @@ static struct sensors_classdev sensors_capsensor_ch3_cdev = {
typedef enum{
CAPSENSOR_ENABLE_FLAG_CH0,
CAPSENSOR_ENABLE_FLAG_CH1,
CAPSENSOR_ENABLE_FLAG_CH2,
CAPSENSOR_ENABLE_FLAG_CH3,
CAPSENSOR_ENABLE_FLAG_CH0=1,
CAPSENSOR_ENABLE_FLAG_CH1=2,
CAPSENSOR_ENABLE_FLAG_CH2=4,
CAPSENSOR_ENABLE_FLAG_CH3=8,
CAPSENSOR_ENABLE_FLAG_MAX
}capsensor_enable_flag_t;
/***************************************