hwmon: lis3: regulator control
Based on pm_runtime control, turn lis3 regulators on and off.
Perform context save and restore on transitions.
Feature is optional and must be enabled in platform data.
Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Acked-by: Eric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
diff --git a/drivers/hwmon/lis3lv02d.h b/drivers/hwmon/lis3lv02d.h
index 633cf1d..c5c063d 100644
--- a/drivers/hwmon/lis3lv02d.h
+++ b/drivers/hwmon/lis3lv02d.h
@@ -20,6 +20,7 @@
*/
#include <linux/platform_device.h>
#include <linux/input-polldev.h>
+#include <linux/regulator/consumer.h>
/*
* This driver tries to support the "digital" accelerometer chips from
@@ -223,11 +224,17 @@
CLICK_IA = 0x40,
};
+enum lis3lv02d_reg_state {
+ LIS3_REG_OFF = 0x00,
+ LIS3_REG_ON = 0x01,
+};
+
union axis_conversion {
struct {
int x, y, z;
};
int as_array[3];
+
};
struct lis3lv02d {
@@ -236,8 +243,13 @@
int (*init) (struct lis3lv02d *lis3);
int (*write) (struct lis3lv02d *lis3, int reg, u8 val);
int (*read) (struct lis3lv02d *lis3, int reg, u8 *ret);
+ int (*reg_ctrl) (struct lis3lv02d *lis3, bool state);
int *odrs; /* Supported output data rates */
+ u8 *regs; /* Regs to store / restore */
+ int regs_size;
+ u8 *reg_cache;
+ bool regs_stored;
u8 odr_mask; /* ODR bit mask */
u8 whoami; /* indicates measurement precision */
s16 (*read_data) (struct lis3lv02d *lis3, int reg);
@@ -250,6 +262,7 @@
struct input_polled_dev *idev; /* input device */
struct platform_device *pdev; /* platform device */
+ struct regulator_bulk_data regulators[2];
atomic_t count; /* interrupt count after last read */
union axis_conversion ac; /* hw -> logical axis */
int mapped_btns[3];