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touch: pt: use regulator to control power 

VDD_3V3_TOUCH power to cyttsp5 touch is controlled by GPIO TOUCH_PWR_EN.
Rather than relying on U-Boot to initialize the power, let's use
regulator to control it.
zero-sugar
Michal Koziel 2021-04-12 07:52:59 +02:00 committed by mkemlogic
parent 064195ab66
commit 4fd0a33aa7
2 changed files with 19 additions and 0 deletions
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18
drivers/input/touchscreen/pt_core.c
View File

@ -31,6 +31,7 @@
#include <linux/kthread.h>
#include <linux/i2c.h>
#include <linux/gpio.h>
#include <linux/regulator/consumer.h>
#define PT_CORE_STARTUP_RETRY_COUNT 3
@ -16881,6 +16882,17 @@ int pt_probe(const struct pt_bus_ops *ops, struct device *dev,
/* PtSBC builds will call this function in pt_probe_complete() */
pt_add_core(dev);
cd->vdd = regulator_get(cd->dev, "vdd");
if (IS_ERR(cd->vdd)) {
rc = PTR_ERR(cd->vdd);
goto error_vdd_get;
}
rc = regulator_enable(cd->vdd);
if (rc)
goto error_vdd_enable;
rc = sysfs_create_group(&dev->kobj, &early_attr_group);
if (rc)
pt_debug(cd->dev, DL_WARN, "%s:create early attrs failed\n",
@ -17161,6 +17173,9 @@ error_detect:
if (cd->cpdata->setup_power)
cd->cpdata->setup_power(cd->cpdata, PT_MT_POWER_OFF, dev);
sysfs_remove_group(&dev->kobj, &early_attr_group);
error_vdd_enable:
regulator_put(cd->vdd);
error_vdd_get:
pt_del_core(dev);
dev_set_drvdata(dev, NULL);
kfree(cd);
@ -17253,6 +17268,9 @@ int pt_release(struct pt_core_data *cd)
cd->cpdata->init(cd->cpdata, PT_MT_POWER_OFF, dev);
if (cd->cpdata->setup_power)
cd->cpdata->setup_power(cd->cpdata, PT_MT_POWER_OFF, dev);
regulator_disable(cd->vdd);
regulator_put(cd->vdd);
dev_set_drvdata(dev, NULL);
pt_del_core(dev);
pt_free_si_ptrs(cd);

1
drivers/input/touchscreen/pt_regs.h
View File

@ -1532,6 +1532,7 @@ struct pt_core_data {
bool show_tt_data;
bool bridge_mode;
bool hw_detect_enabled;
struct regulator *vdd;
#endif
};