diff options
| -rw-r--r-- | drivers/power/supply/qcom/qpnp-qnovo.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/drivers/power/supply/qcom/qpnp-qnovo.c b/drivers/power/supply/qcom/qpnp-qnovo.c index 69ea39ad5744..cf90f9041935 100644 --- a/drivers/power/supply/qcom/qpnp-qnovo.c +++ b/drivers/power/supply/qcom/qpnp-qnovo.c @@ -20,6 +20,7 @@ #include <linux/of_irq.h> #include <linux/qpnp/qpnp-revid.h> #include <linux/pmic-voter.h> +#include <linux/delay.h> #define QNOVO_REVISION1 0x00 #define QNOVO_REVISION2 0x01 @@ -124,6 +125,8 @@ #define USB_READY_VOTER "USB_READY_VOTER" #define DC_READY_VOTER "DC_READY_VOTER" +#define PT_RESTART_VOTER "PT_RESTART_VOTER" + struct qnovo_dt_props { bool external_rsense; struct device_node *revid_dev_node; @@ -161,6 +164,8 @@ struct qnovo { int dc_present; struct delayed_work usb_debounce_work; struct delayed_work dc_debounce_work; + + struct delayed_work ptrain_restart_work; }; static int debug_mask; @@ -354,6 +359,11 @@ static int pt_dis_votable_cb(struct votable *votable, void *data, int disable, struct qnovo *chip = data; int rc; + if (disable) { + cancel_delayed_work_sync(&chip->ptrain_restart_work); + vote(chip->awake_votable, PT_RESTART_VOTER, false, 0); + } + rc = qnovo_masked_write(chip, QNOVO_PTRAIN_EN, QNOVO_PTRAIN_EN_BIT, (bool)disable ? 0 : QNOVO_PTRAIN_EN_BIT); if (rc < 0) { @@ -362,6 +372,12 @@ static int pt_dis_votable_cb(struct votable *votable, void *data, int disable, return rc; } + if (!disable) { + vote(chip->awake_votable, PT_RESTART_VOTER, true, 0); + schedule_delayed_work(&chip->ptrain_restart_work, + msecs_to_jiffies(20)); + } + return 0; } @@ -1311,6 +1327,51 @@ static void status_change_work(struct work_struct *work) qnovo_update_status(chip); } +static void ptrain_restart_work(struct work_struct *work) +{ + struct qnovo *chip = container_of(work, + struct qnovo, ptrain_restart_work.work); + u8 pt_t1, pt_t2; + int rc; + + rc = qnovo_read(chip, QNOVO_PTTIME_STS, &pt_t1, 1); + if (rc < 0) { + dev_err(chip->dev, "Couldn't read QNOVO_PTTIME_STS rc = %d\n", + rc); + goto clean_up; + } + + /* pttime increments every 2 seconds */ + msleep(2100); + + rc = qnovo_read(chip, QNOVO_PTTIME_STS, &pt_t2, 1); + if (rc < 0) { + dev_err(chip->dev, "Couldn't read QNOVO_PTTIME_STS rc = %d\n", + rc); + goto clean_up; + } + + if (pt_t1 != pt_t2) + goto clean_up; + + /* Toggle pt enable to restart pulse train */ + rc = qnovo_masked_write(chip, QNOVO_PTRAIN_EN, QNOVO_PTRAIN_EN_BIT, 0); + if (rc < 0) { + dev_err(chip->dev, "Couldn't disable pulse train rc=%d\n", rc); + goto clean_up; + } + msleep(1000); + rc = qnovo_masked_write(chip, QNOVO_PTRAIN_EN, QNOVO_PTRAIN_EN_BIT, + QNOVO_PTRAIN_EN_BIT); + if (rc < 0) { + dev_err(chip->dev, "Couldn't enable pulse train rc=%d\n", rc); + goto clean_up; + } + +clean_up: + vote(chip->awake_votable, PT_RESTART_VOTER, false, 0); +} + static int qnovo_notifier_call(struct notifier_block *nb, unsigned long ev, void *v) { @@ -1564,6 +1625,7 @@ static int qnovo_probe(struct platform_device *pdev) INIT_WORK(&chip->status_change_work, status_change_work); INIT_DELAYED_WORK(&chip->dc_debounce_work, dc_debounce_work); INIT_DELAYED_WORK(&chip->usb_debounce_work, usb_debounce_work); + INIT_DELAYED_WORK(&chip->ptrain_restart_work, ptrain_restart_work); rc = qnovo_hw_init(chip); if (rc < 0) { |