diff mbox series

[V5] acpi: trigger wakeup key event from power button

Message ID 20231007075433.555715-1-Ken.Xue@amd.com (mailing list archive)
State Changes Requested, archived
Headers show
Series [V5] acpi: trigger wakeup key event from power button | expand

Commit Message

Ken Xue Oct. 7, 2023, 7:54 a.m. UTC
Andorid can wakeup from various wakeup sources, but only several wakeup
sources can wake up screen with right events(POWER, WAKEUP) from input
device.

Regarding pressing acpi power button, it can resume system and
ACPI_BITMASK_WAKE_STATUS and ACPI_BITMASK_POWER_BUTTON_STATUS are set in
pm1a_sts, but kernel does not report any key event to user space during
resuming by default.

So, send wakeup key event to user space during resume from power button.

Signed-off-by: Ken Xue <Ken.Xue@amd.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

---
V1->V2: fix some compile warning/error caused by lack of
        "struct acpi_device" declaration by including acpi.h.
V2->V3: use "forward declaration" to fix compile warning/error.
V3->V4: refine coding style and commit message
V4->V5: add "select ACPI_BUTTON" to fix build error if CONFIG_ACPI_BUTTON=m. https://lore.kernel.org/oe-kbuild-all/202309150947.YLjvs2Vv-lkp@intel.com/
---
 drivers/acpi/Kconfig  |  1 +
 drivers/acpi/button.c | 17 +++++++++++++++++
 drivers/acpi/sleep.c  |  5 +++++
 include/acpi/button.h |  4 ++++
 4 files changed, 27 insertions(+)


base-commit: b483d3b8a54a544ab8854ca6dbb8d99c423b3ba4

Comments

kernel test robot Oct. 11, 2023, 7:18 p.m. UTC | #1
Hi Ken,

kernel test robot noticed the following build errors:

[auto build test ERROR on b483d3b8a54a544ab8854ca6dbb8d99c423b3ba4]

url:    https://github.com/intel-lab-lkp/linux/commits/Ken-Xue/acpi-trigger-wakeup-key-event-from-power-button/20231007-163549
base:   b483d3b8a54a544ab8854ca6dbb8d99c423b3ba4
patch link:    https://lore.kernel.org/r/20231007075433.555715-1-Ken.Xue%40amd.com
patch subject: [PATCH V5] acpi: trigger wakeup key event from power button
config: loongarch-randconfig-002-20231011 (https://download.01.org/0day-ci/archive/20231012/202310120000.LkRVKBZN-lkp@intel.com/config)
compiler: loongarch64-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231012/202310120000.LkRVKBZN-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202310120000.LkRVKBZN-lkp@intel.com/

All errors (new ones prefixed by >>):

   loongarch64-linux-ld: drivers/acpi/button.o: in function `acpi_power_button_wakeup':
>> button.c:(.text+0x44): undefined reference to `input_event'
>> loongarch64-linux-ld: button.c:(.text+0x58): undefined reference to `input_event'
   loongarch64-linux-ld: button.c:(.text+0x6c): undefined reference to `input_event'
   loongarch64-linux-ld: button.c:(.text+0x8c): undefined reference to `input_event'
   loongarch64-linux-ld: drivers/acpi/button.o: in function `acpi_button_notify':
   button.c:(.text+0x200): undefined reference to `input_event'
   loongarch64-linux-ld: drivers/acpi/button.o:button.c:(.text+0x214): more undefined references to `input_event' follow
   loongarch64-linux-ld: drivers/acpi/button.o: in function `.L42':
>> button.c:(.text+0x3ac): undefined reference to `input_allocate_device'
   loongarch64-linux-ld: drivers/acpi/button.o: in function `.L52':
>> button.c:(.text+0x60c): undefined reference to `input_free_device'
   loongarch64-linux-ld: drivers/acpi/button.o: in function `.L53':
>> button.c:(.text+0x67c): undefined reference to `input_set_capability'
>> loongarch64-linux-ld: button.c:(.text+0x68c): undefined reference to `input_set_capability'
   loongarch64-linux-ld: drivers/acpi/button.o: in function `.L58':
   button.c:(.text+0x6a0): undefined reference to `input_set_capability'
   loongarch64-linux-ld: drivers/acpi/button.o: in function `.L59':
   button.c:(.text+0x6b4): undefined reference to `input_set_capability'
   loongarch64-linux-ld: drivers/acpi/button.o: in function `.L60':
>> button.c:(.text+0x6c0): undefined reference to `input_register_device'
   loongarch64-linux-ld: drivers/acpi/button.o: in function `.L63':
>> button.c:(.text+0x6e0): undefined reference to `input_unregister_device'
   loongarch64-linux-ld: drivers/acpi/button.o: in function `.L87':
   button.c:(.text+0x7f8): undefined reference to `input_unregister_device'
   loongarch64-linux-ld: drivers/acpi/button.o: in function `.L99':
   button.c:(.text+0x89c): undefined reference to `input_event'
   loongarch64-linux-ld: button.c:(.text+0x8b0): undefined reference to `input_event'
   loongarch64-linux-ld: drivers/acpi/button.o: in function `.L97':
   button.c:(.text+0x8c4): undefined reference to `input_event'
   loongarch64-linux-ld: button.c:(.text+0x8d8): undefined reference to `input_event'

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for ACPI_BUTTON
   Depends on [m]: ACPI [=y] && INPUT [=m]
   Selected by [y]:
   - ACPI_SYSTEM_POWER_STATES_SUPPORT [=y] && ACPI [=y]
Rafael J. Wysocki Dec. 21, 2023, 2:25 p.m. UTC | #2
On Sat, Oct 7, 2023 at 9:55 AM Ken Xue <Ken.Xue@amd.com> wrote:
>
> Andorid can wakeup from various wakeup sources, but only several wakeup
> sources can wake up screen with right events(POWER, WAKEUP) from input
> device.
>
> Regarding pressing acpi power button, it can resume system and
> ACPI_BITMASK_WAKE_STATUS and ACPI_BITMASK_POWER_BUTTON_STATUS are set in
> pm1a_sts, but kernel does not report any key event to user space during
> resuming by default.
>
> So, send wakeup key event to user space during resume from power button.
>
> Signed-off-by: Ken Xue <Ken.Xue@amd.com>
> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
>
> ---
> V1->V2: fix some compile warning/error caused by lack of
>         "struct acpi_device" declaration by including acpi.h.
> V2->V3: use "forward declaration" to fix compile warning/error.
> V3->V4: refine coding style and commit message
> V4->V5: add "select ACPI_BUTTON" to fix build error if CONFIG_ACPI_BUTTON=m. https://lore.kernel.org/oe-kbuild-all/202309150947.YLjvs2Vv-lkp@intel.com/
> ---
>  drivers/acpi/Kconfig  |  1 +
>  drivers/acpi/button.c | 17 +++++++++++++++++
>  drivers/acpi/sleep.c  |  5 +++++
>  include/acpi/button.h |  4 ++++
>  4 files changed, 27 insertions(+)
>
> diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
> index 00dd309b6682..001da6233fcd 100644
> --- a/drivers/acpi/Kconfig
> +++ b/drivers/acpi/Kconfig
> @@ -53,6 +53,7 @@ config ACPI_GENERIC_GSI
>
>  config ACPI_SYSTEM_POWER_STATES_SUPPORT
>         bool
> +       select ACPI_BUTTON
>
>  config ACPI_CCA_REQUIRED
>         bool
> diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c
> index 1e76a64cce0a..3baddecd66c6 100644
> --- a/drivers/acpi/button.c
> +++ b/drivers/acpi/button.c
> @@ -363,6 +363,22 @@ static int acpi_button_remove_fs(struct acpi_device *device)
>         return 0;
>  }
>
> +void acpi_power_button_wakeup(struct acpi_device *dev)
> +{
> +       struct acpi_button *button = acpi_driver_data(dev);
> +       struct input_dev *input;
> +
> +       if (button->type != ACPI_BUTTON_TYPE_POWER)
> +               return;
> +
> +       input = button->input;
> +       input_report_key(input, KEY_WAKEUP, 1);
> +       input_sync(input);
> +       input_report_key(input, KEY_WAKEUP, 0);
> +       input_sync(input);
> +}
> +EXPORT_SYMBOL(acpi_power_button_wakeup);
> +
>  /* Driver Interface */
>  int acpi_lid_open(void)
>  {
> @@ -579,6 +595,7 @@ static int acpi_button_add(struct acpi_device *device)
>         switch (button->type) {
>         case ACPI_BUTTON_TYPE_POWER:
>                 input_set_capability(input, EV_KEY, KEY_POWER);
> +               input_set_capability(input, EV_KEY, KEY_WAKEUP);
>                 break;
>
>         case ACPI_BUTTON_TYPE_SLEEP:
> diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
> index 808484d11209..f816606abd71 100644
> --- a/drivers/acpi/sleep.c
> +++ b/drivers/acpi/sleep.c
> @@ -20,9 +20,13 @@
>  #include <linux/acpi.h>
>  #include <linux/module.h>
>  #include <linux/syscore_ops.h>
> +
>  #include <asm/io.h>
> +
>  #include <trace/events/power.h>
>
> +#include <acpi/button.h>

Not really.

> +
>  #include "internal.h"
>  #include "sleep.h"
>
> @@ -507,6 +511,7 @@ static void acpi_pm_finish(void)
>         pwr_btn_adev = acpi_dev_get_first_match_dev(ACPI_BUTTON_HID_POWERF,
>                                                     NULL, -1);
>         if (pwr_btn_adev) {
> +               acpi_power_button_wakeup(pwr_btn_adev);

Why does this need to be done from here?

Can't the button driver itself to it?

>                 pm_wakeup_event(&pwr_btn_adev->dev, 0);
>                 acpi_dev_put(pwr_btn_adev);
>         }
> diff --git a/include/acpi/button.h b/include/acpi/button.h
> index af2fce5d2ee3..6126d665aa42 100644
> --- a/include/acpi/button.h
> +++ b/include/acpi/button.h
> @@ -2,17 +2,21 @@
>  #ifndef ACPI_BUTTON_H
>  #define ACPI_BUTTON_H
>
> +struct acpi_device;
> +
>  #define ACPI_BUTTON_HID_POWER  "PNP0C0C"
>  #define ACPI_BUTTON_HID_LID    "PNP0C0D"
>  #define ACPI_BUTTON_HID_SLEEP  "PNP0C0E"
>
>  #if IS_ENABLED(CONFIG_ACPI_BUTTON)
>  extern int acpi_lid_open(void);
> +extern void acpi_power_button_wakeup(struct acpi_device *dev);
>  #else
>  static inline int acpi_lid_open(void)
>  {
>         return 1;
>  }
> +static inline void acpi_power_button_wakeup(struct acpi_device *dev) {}
>  #endif /* IS_ENABLED(CONFIG_ACPI_BUTTON) */
>
>  #endif /* ACPI_BUTTON_H */
>
> base-commit: b483d3b8a54a544ab8854ca6dbb8d99c423b3ba4
> --
> 2.35.1
>
Ken Xue Dec. 25, 2023, 5:56 a.m. UTC | #3
[AMD Official Use Only - General]

> >  #include "internal.h"
> >  #include "sleep.h"
> >
> > @@ -507,6 +511,7 @@ static void acpi_pm_finish(void)
> >         pwr_btn_adev =
> acpi_dev_get_first_match_dev(ACPI_BUTTON_HID_POWERF,
> >                                                     NULL, -1);
> >         if (pwr_btn_adev) {
> > +               acpi_power_button_wakeup(pwr_btn_adev);
>
> Why does this need to be done from here?
>
> Can't the button driver itself to it?
[Ken] Thanks for reminding. It does work in button driver itself too.
This patch just tried to make sure "wakeup" event is reported after pwr_btn_event_pending becomes false by adding codes here.
But in fact, Reporting "wakeup" event in button driver itself also can support same sequence.
I will submit a new patch later.
diff mbox series

Patch

diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 00dd309b6682..001da6233fcd 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -53,6 +53,7 @@  config ACPI_GENERIC_GSI
 
 config ACPI_SYSTEM_POWER_STATES_SUPPORT
 	bool
+	select ACPI_BUTTON
 
 config ACPI_CCA_REQUIRED
 	bool
diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c
index 1e76a64cce0a..3baddecd66c6 100644
--- a/drivers/acpi/button.c
+++ b/drivers/acpi/button.c
@@ -363,6 +363,22 @@  static int acpi_button_remove_fs(struct acpi_device *device)
 	return 0;
 }
 
+void acpi_power_button_wakeup(struct acpi_device *dev)
+{
+	struct acpi_button *button = acpi_driver_data(dev);
+	struct input_dev *input;
+
+	if (button->type != ACPI_BUTTON_TYPE_POWER)
+		return;
+
+	input = button->input;
+	input_report_key(input, KEY_WAKEUP, 1);
+	input_sync(input);
+	input_report_key(input, KEY_WAKEUP, 0);
+	input_sync(input);
+}
+EXPORT_SYMBOL(acpi_power_button_wakeup);
+
 /* Driver Interface */
 int acpi_lid_open(void)
 {
@@ -579,6 +595,7 @@  static int acpi_button_add(struct acpi_device *device)
 	switch (button->type) {
 	case ACPI_BUTTON_TYPE_POWER:
 		input_set_capability(input, EV_KEY, KEY_POWER);
+		input_set_capability(input, EV_KEY, KEY_WAKEUP);
 		break;
 
 	case ACPI_BUTTON_TYPE_SLEEP:
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index 808484d11209..f816606abd71 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -20,9 +20,13 @@ 
 #include <linux/acpi.h>
 #include <linux/module.h>
 #include <linux/syscore_ops.h>
+
 #include <asm/io.h>
+
 #include <trace/events/power.h>
 
+#include <acpi/button.h>
+
 #include "internal.h"
 #include "sleep.h"
 
@@ -507,6 +511,7 @@  static void acpi_pm_finish(void)
 	pwr_btn_adev = acpi_dev_get_first_match_dev(ACPI_BUTTON_HID_POWERF,
 						    NULL, -1);
 	if (pwr_btn_adev) {
+		acpi_power_button_wakeup(pwr_btn_adev);
 		pm_wakeup_event(&pwr_btn_adev->dev, 0);
 		acpi_dev_put(pwr_btn_adev);
 	}
diff --git a/include/acpi/button.h b/include/acpi/button.h
index af2fce5d2ee3..6126d665aa42 100644
--- a/include/acpi/button.h
+++ b/include/acpi/button.h
@@ -2,17 +2,21 @@ 
 #ifndef ACPI_BUTTON_H
 #define ACPI_BUTTON_H
 
+struct acpi_device;
+
 #define ACPI_BUTTON_HID_POWER	"PNP0C0C"
 #define ACPI_BUTTON_HID_LID	"PNP0C0D"
 #define ACPI_BUTTON_HID_SLEEP	"PNP0C0E"
 
 #if IS_ENABLED(CONFIG_ACPI_BUTTON)
 extern int acpi_lid_open(void);
+extern void acpi_power_button_wakeup(struct acpi_device *dev);
 #else
 static inline int acpi_lid_open(void)
 {
 	return 1;
 }
+static inline void acpi_power_button_wakeup(struct acpi_device *dev) {}
 #endif /* IS_ENABLED(CONFIG_ACPI_BUTTON) */
 
 #endif /* ACPI_BUTTON_H */