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platform/chrome: cros_ec: Call interrupt bottom half in ISH or RPMSG mode

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Call the same bottom half for all EC protocols (threaded code).

Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Link: https://lore.kernel.org/r/20210122054637.1422289-2-gwendal@chromium.org
This commit is contained in:
Gwendal Grignou 2021-01-21 21:46:36 -08:00 committed by Enric Balletbo i Serra
parent 4c2e9b3e18
commit 24c69043be
4 changed files with 25 additions and 17 deletions
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26
drivers/platform/chrome/cros_ec.c
View File

@ -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) {

4
drivers/platform/chrome/cros_ec.h
View File

@ -8,12 +8,14 @@
#ifndef __CROS_EC_H
#define __CROS_EC_H
#include <linux/interrupt.h>
int cros_ec_register(struct cros_ec_device *ec_dev);
int cros_ec_unregister(struct cros_ec_device *ec_dev);
int cros_ec_suspend(struct cros_ec_device *ec_dev);
int cros_ec_resume(struct cros_ec_device *ec_dev);
bool cros_ec_handle_event(struct cros_ec_device *ec_dev);
irqreturn_t cros_ec_irq_thread(int irq, void *data);
#endif /* __CROS_EC_H */

6
drivers/platform/chrome/cros_ec_ishtp.c
View File

@ -140,12 +140,8 @@ static void ish_evt_handler(struct work_struct *work)
{
struct ishtp_cl_data *client_data =
container_of(work, struct ishtp_cl_data, work_ec_evt);
struct cros_ec_device *ec_dev = client_data->ec_dev;
bool ec_has_more_events;
do {
ec_has_more_events = cros_ec_handle_event(ec_dev);
} while (ec_has_more_events);
cros_ec_irq_thread(0, client_data->ec_dev);
}
/**

6
drivers/platform/chrome/cros_ec_rpmsg.c
View File

@ -149,12 +149,8 @@ cros_ec_rpmsg_host_event_function(struct work_struct *host_event_work)
struct cros_ec_rpmsg *ec_rpmsg = container_of(host_event_work,
struct cros_ec_rpmsg,
host_event_work);
struct cros_ec_device *ec_dev = dev_get_drvdata(&ec_rpmsg->rpdev->dev);
bool ec_has_more_events;
do {
ec_has_more_events = cros_ec_handle_event(ec_dev);
} while (ec_has_more_events);
cros_ec_irq_thread(0, dev_get_drvdata(&ec_rpmsg->rpdev->dev));
}
static int cros_ec_rpmsg_callback(struct rpmsg_device *rpdev, void *data,