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| author | Raul E Rangel <rrangel@chromium.org> | 2022-11-23 00:44:35 +0300 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2022-11-23 00:58:49 +0300 |
| commit | d86388c902b45fe2550eac08c47272541c726f84 (patch) | |
| tree | 555601cebd26aa1ad820a99dc62e66411c0b1123 /drivers/input/touchscreen/raydium_i2c_ts.c | |
| parent | 2e758f535e234aa3896e3b5fc6c193268b353515 (diff) | |
| download | linux-d86388c902b45fe2550eac08c47272541c726f84.tar.xz | |
Input: raydium_ts_i2c - use PM subsystem to manage wake irq
The raydium I2C touchscreen driver is currently manually managing the
wake IRQ. This change removes the explicit enable_irq_wake /
disable_irq_wake and instead relies on the PM subsystem. This is done by
calling dev_pm_set_wake_irq.
i2c_device_probe already calls dev_pm_set_wake_irq when using device
tree, and i2c_device_remove also already calls dev_pm_clear_wake_irq.
There could be some device tree systems that have incorrectly declared
`wake` capabilities, so this change will set the wake irq if one is
missing. This matches the previous behavior.
Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Link: https://lore.kernel.org/r/20220929093200.v6.4.I06b417b274bbecb31775a73993a7a3c1bc80de7b@changeid
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input/touchscreen/raydium_i2c_ts.c')
| -rw-r--r-- | drivers/input/touchscreen/raydium_i2c_ts.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/drivers/input/touchscreen/raydium_i2c_ts.c b/drivers/input/touchscreen/raydium_i2c_ts.c index 3a4952935366..66c5b577b791 100644 --- a/drivers/input/touchscreen/raydium_i2c_ts.c +++ b/drivers/input/touchscreen/raydium_i2c_ts.c @@ -21,6 +21,7 @@ #include <linux/interrupt.h> #include <linux/module.h> #include <linux/of.h> +#include <linux/pm_wakeirq.h> #include <linux/regulator/consumer.h> #include <linux/slab.h> #include <asm/unaligned.h> @@ -134,8 +135,6 @@ struct raydium_data { u8 pkg_size; enum raydium_boot_mode boot_mode; - - bool wake_irq_enabled; }; /* @@ -1186,6 +1185,15 @@ static int raydium_i2c_probe(struct i2c_client *client, return error; } + /* + * The wake IRQ should be declared via device tree instead of assuming + * the IRQ can wake the system. This is here for legacy reasons and + * will be removed once the i2c-core supports querying ACPI for wake + * capabilities. + */ + if (!client->dev.power.wakeirq) + dev_pm_set_wake_irq(&client->dev, client->irq); + error = devm_device_add_group(&client->dev, &raydium_i2c_attribute_group); if (error) { @@ -1222,8 +1230,6 @@ static int __maybe_unused raydium_i2c_suspend(struct device *dev) if (device_may_wakeup(dev)) { raydium_enter_sleep(client); - - ts->wake_irq_enabled = (enable_irq_wake(client->irq) == 0); } else { raydium_i2c_power_off(ts); } @@ -1237,8 +1243,6 @@ static int __maybe_unused raydium_i2c_resume(struct device *dev) struct raydium_data *ts = i2c_get_clientdata(client); if (device_may_wakeup(dev)) { - if (ts->wake_irq_enabled) - disable_irq_wake(client->irq); raydium_i2c_sw_reset(client); } else { raydium_i2c_power_on(ts); |