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wifi: wfx: allow SPI device to wake up the host

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When the host is asleep, the device has wake up the host using the
usual SPI IRQ.

Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://patch.msgid.link/20250304153224.39083-4-jerome.pouiller@silabs.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Jérôme Pouiller 2025-03-04 16:32:22 +01:00 committed by Johannes Berg
parent 813badc0e1
commit 32bd7f4b39
1 changed files with 30 additions and 1 deletions
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31
drivers/net/wireless/silabs/wfx/bus_spi.c
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@ -13,6 +13,7 @@
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/of.h>
#include <linux/pm.h>
#include "bus.h"
#include "wfx.h"
@ -189,6 +190,26 @@ static const struct wfx_hwbus_ops wfx_spi_hwbus_ops = {
.align_size = wfx_spi_align_size,
};
static int wfx_spi_suspend(struct device *dev)
{
struct spi_device *func = to_spi_device(dev);
struct wfx_spi_priv *bus = spi_get_drvdata(func);
if (!device_may_wakeup(dev))
return 0;
flush_work(&bus->core->hif.bh);
return enable_irq_wake(func->irq);
}
static int wfx_spi_resume(struct device *dev)
{
struct spi_device *func = to_spi_device(dev);
if (!device_may_wakeup(dev))
return 0;
return disable_irq_wake(func->irq);
}
static int wfx_spi_probe(struct spi_device *func)
{
struct wfx_platform_data *pdata;
@ -239,7 +260,12 @@ static int wfx_spi_probe(struct spi_device *func)
if (!bus->core)
return -EIO;
return wfx_probe(bus->core);
ret = wfx_probe(bus->core);
if (ret)
return ret;
device_set_wakeup_capable(&func->dev, true);
return 0;
}
static void wfx_spi_remove(struct spi_device *func)
@ -273,6 +299,8 @@ static const struct of_device_id wfx_spi_of_match[] = {
MODULE_DEVICE_TABLE(of, wfx_spi_of_match);
#endif
static DEFINE_SIMPLE_DEV_PM_OPS(wfx_spi_pm_ops, wfx_spi_suspend, wfx_spi_resume);
struct spi_driver wfx_spi_driver = {
.id_table = wfx_spi_id,
.probe = wfx_spi_probe,
@ -280,5 +308,6 @@ struct spi_driver wfx_spi_driver = {
.driver = {
.name = "wfx-spi",
.of_match_table = of_match_ptr(wfx_spi_of_match),
.pm = &wfx_spi_pm_ops,
},
};