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input: qcom-hv-haptics: Disable haptics module during suspend

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To help with power savings, disable haptics module when the device
enters suspend and enable it when it exits suspend.

Change-Id: I8956be849b876a2b514c1de49f8ff447267d28a1
Signed-off-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org>
Signed-off-by: Fenglin Wu <fenglinw@codeaurora.org>
This commit is contained in:
Subbaraman Narayanamurthy 2020-09-03 17:39:57 -07:00 committed by David Collins
parent 75cf6e2792
commit 155e0147ff
1 changed files with 54 additions and 0 deletions
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54
drivers/input/misc/qcom-hv-haptics.c
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@ -57,6 +57,9 @@
#define FIFO_EMPTY_BIT BIT(1)
/* config register definitions in HAPTICS_CFG module */
#define HAP_CFG_EN_CTL_REG 0x46
#define HAPTICS_EN_BIT BIT(7)
#define HAP_CFG_DRV_CTRL_REG 0x47
#define PSTG_DLY_MASK GENMASK(7, 6)
#define DRV_SLEW_RATE_MASK GENMASK(2, 0)
@ -4027,6 +4030,56 @@ static int haptics_remove(struct platform_device *pdev)
return 0;
}
#ifdef CONFIG_PM_SLEEP
static int haptics_suspend(struct device *dev)
{
struct haptics_chip *chip = dev_get_drvdata(dev);
struct haptics_play_info *play = &chip->play;
u8 val = 0;
int rc;
if (chip->cfg_revision == HAP_CFG_V1)
return 0;
if ((play->pattern_src == FIFO) &&
atomic_read(&play->fifo_status.is_busy)) {
if (atomic_read(&play->fifo_status.written_done) == 0) {
dev_dbg(chip->dev, "cancelling FIFO playing\n");
atomic_set(&play->fifo_status.cancelled, 1);
}
rc = haptics_stop_fifo_play(chip);
if (rc < 0) {
dev_err(chip->dev, "stop FIFO playing failed, rc=%d\n");
return rc;
}
} else {
rc = haptics_enable_play(chip, false);
if (rc < 0)
return rc;
}
return haptics_write(chip, chip->cfg_addr_base,
HAP_CFG_EN_CTL_REG, &val, 1);
}
static int haptics_resume(struct device *dev)
{
struct haptics_chip *chip = dev_get_drvdata(dev);
u8 val = HAPTICS_EN_BIT;
if (chip->cfg_revision == HAP_CFG_V1)
return 0;
return haptics_write(chip, chip->cfg_addr_base,
HAP_CFG_EN_CTL_REG, &val, 1);
}
#endif
static const struct dev_pm_ops haptics_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(haptics_suspend, haptics_resume)
};
static const struct of_device_id haptics_match_table[] = {
{ .compatible = "qcom,hv-haptics" },
{ .compatible = "qcom,pm8350b-haptics" },
@ -4037,6 +4090,7 @@ static struct platform_driver haptics_driver = {
.driver = {
.name = "qcom-hv-haptics",
.of_match_table = haptics_match_table,
.pm = &haptics_pm_ops,
},
.probe = haptics_probe,
.remove = haptics_remove,