diff options
Diffstat (limited to 'drivers/platform/chrome/cros_ec.c')
| -rw-r--r-- | drivers/platform/chrome/cros_ec.c | 33 |
1 files changed, 27 insertions, 6 deletions
diff --git a/drivers/platform/chrome/cros_ec.c b/drivers/platform/chrome/cros_ec.c index 3104680b7485..fc5aa1525d13 100644 --- a/drivers/platform/chrome/cros_ec.c +++ b/drivers/platform/chrome/cros_ec.c @@ -32,7 +32,14 @@ static struct cros_ec_platform pd_p = { .cmd_offset = EC_CMD_PASSTHRU_OFFSET(CROS_EC_DEV_PD_INDEX), }; -static irqreturn_t ec_irq_handler(int irq, void *data) +/** + * cros_ec_irq_handler() - top half part of the interrupt handler + * @irq: IRQ id + * @data: (ec_dev) Device with events to process. + * + * Return: Wakeup the bottom half + */ +static irqreturn_t cros_ec_irq_handler(int irq, void *data) { struct cros_ec_device *ec_dev = data; @@ -51,7 +58,7 @@ static irqreturn_t ec_irq_handler(int irq, void *data) * Return: true if more events are still pending and this function should be * called again. */ -bool cros_ec_handle_event(struct cros_ec_device *ec_dev) +static bool cros_ec_handle_event(struct cros_ec_device *ec_dev) { bool wake_event; bool ec_has_more_events; @@ -73,9 +80,15 @@ bool cros_ec_handle_event(struct cros_ec_device *ec_dev) return ec_has_more_events; } -EXPORT_SYMBOL(cros_ec_handle_event); -static irqreturn_t ec_irq_thread(int irq, void *data) +/** + * cros_ec_irq_thread() - bottom half part of the interrupt handler + * @irq: IRQ id + * @data: (ec_dev) Device with events to process. + * + * Return: Interrupt handled. + */ +irqreturn_t cros_ec_irq_thread(int irq, void *data) { struct cros_ec_device *ec_dev = data; bool ec_has_more_events; @@ -86,6 +99,7 @@ static irqreturn_t ec_irq_thread(int irq, void *data) return IRQ_HANDLED; } +EXPORT_SYMBOL(cros_ec_irq_thread); static int cros_ec_sleep_event(struct cros_ec_device *ec_dev, u8 sleep_event) { @@ -194,8 +208,8 @@ int cros_ec_register(struct cros_ec_device *ec_dev) if (ec_dev->irq > 0) { err = devm_request_threaded_irq(dev, ec_dev->irq, - ec_irq_handler, - ec_irq_thread, + cros_ec_irq_handler, + cros_ec_irq_thread, IRQF_TRIGGER_LOW | IRQF_ONESHOT, "chromeos-ec", ec_dev); if (err) { @@ -269,6 +283,13 @@ int cros_ec_register(struct cros_ec_device *ec_dev) dev_info(dev, "Chrome EC device registered\n"); + /* + * Unlock EC that may be waiting for AP to process MKBP events. + * If the AP takes to long to answer, the EC would stop sending events. + */ + if (ec_dev->mkbp_event_supported) + cros_ec_irq_thread(0, ec_dev); + return 0; } EXPORT_SYMBOL(cros_ec_register); |