mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-24 13:13:57 +08:00
Input: cyapa - add regulator vcc support
We need to power up the chip before we can initialize it. On systems that delegate task of powering up regulators to firmware we assume that we'll be simply given a dummy regulator. Signed-off-by: Dudley Du <dudl@cypress.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
parent
02d9bd05dc
commit
36e9615bd7
@ -21,6 +21,7 @@
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/mutex.h>
|
||||
#include <linux/regulator/consumer.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/uaccess.h>
|
||||
#include <linux/pm_runtime.h>
|
||||
@ -1241,6 +1242,13 @@ static void cyapa_remove_sysfs_group(void *data)
|
||||
sysfs_remove_group(&cyapa->client->dev.kobj, &cyapa_sysfs_group);
|
||||
}
|
||||
|
||||
static void cyapa_disable_regulator(void *data)
|
||||
{
|
||||
struct cyapa *cyapa = data;
|
||||
|
||||
regulator_disable(cyapa->vcc);
|
||||
}
|
||||
|
||||
static int cyapa_probe(struct i2c_client *client,
|
||||
const struct i2c_device_id *dev_id)
|
||||
{
|
||||
@ -1274,6 +1282,27 @@ static int cyapa_probe(struct i2c_client *client,
|
||||
sprintf(cyapa->phys, "i2c-%d-%04x/input0", client->adapter->nr,
|
||||
client->addr);
|
||||
|
||||
cyapa->vcc = devm_regulator_get(dev, "vcc");
|
||||
if (IS_ERR(cyapa->vcc)) {
|
||||
error = PTR_ERR(cyapa->vcc);
|
||||
dev_err(dev, "failed to get vcc regulator: %d\n", error);
|
||||
return error;
|
||||
}
|
||||
|
||||
error = regulator_enable(cyapa->vcc);
|
||||
if (error) {
|
||||
dev_err(dev, "failed to enable regulator: %d\n", error);
|
||||
return error;
|
||||
}
|
||||
|
||||
error = devm_add_action(dev, cyapa_disable_regulator, cyapa);
|
||||
if (error) {
|
||||
cyapa_disable_regulator(cyapa);
|
||||
dev_err(dev, "failed to add disable regulator action: %d\n",
|
||||
error);
|
||||
return error;
|
||||
}
|
||||
|
||||
error = cyapa_initialize(cyapa);
|
||||
if (error) {
|
||||
dev_err(dev, "failed to detect and initialize tp device.\n");
|
||||
|
@ -321,6 +321,7 @@ struct cyapa {
|
||||
u8 status[BL_STATUS_SIZE];
|
||||
bool operational; /* true: ready for data reporting; false: not. */
|
||||
|
||||
struct regulator *vcc;
|
||||
struct i2c_client *client;
|
||||
struct input_dev *input;
|
||||
char phys[32]; /* Device physical location */
|
||||
|
Loading…
Reference in New Issue
Block a user