When _BCL invalid, disable thinkpad_acpi backlight brightness control.
brightness_enable is already checked at the beginning,
Always print notice when enabled brightness control.
Signed-off-by: Aaron Ma <[email protected]>
---
drivers/platform/x86/thinkpad_acpi.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index ff7f0a4f2475..a52d6d457d6c 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -6955,10 +6955,13 @@ static int __init brightness_init(struct ibm_init_struct *iibm)
pr_warn("Cannot enable backlight brightness support, ACPI is already handling it. Refer to the acpi_backlight kernel parameter.\n");
return 1;
}
- } else if (tp_features.bright_acpimode && brightness_enable > 1) {
- pr_notice("Standard ACPI backlight interface not available, thinkpad_acpi native brightness control enabled\n");
+ } else if (!tp_features.bright_acpimode) {
+ pr_notice("thinkpad_acpi backlight interface not available\n");
+ return 1;
}
+ pr_notice("thinkpad_acpi native brightness control enabled\n");
+
/*
* Check for module parameter bogosity, note that we
* init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be
--
2.26.2
On Thu, Jul 2, 2020 at 11:55 AM Aaron Ma <[email protected]> wrote:
>
> When _BCL invalid, disable thinkpad_acpi backlight brightness control.
>
> brightness_enable is already checked at the beginning,
> Always print notice when enabled brightness control.
Why?
...
> + pr_notice("thinkpad_acpi native brightness control enabled\n");
'notice' level is quite high, why do we spam users with this?
--
With Best Regards,
Andy Shevchenko
On 7/2/20 5:30 PM, Andy Shevchenko wrote:
> On Thu, Jul 2, 2020 at 11:55 AM Aaron Ma <[email protected]> wrote:
>>
>> When _BCL invalid, disable thinkpad_acpi backlight brightness control.
>>
>> brightness_enable is already checked at the beginning,
>
>> Always print notice when enabled brightness control.
>
> Why?
>
Default brightness_enable = 2, so this message will always be printed as before
Actually no change here.
> ...
>
>> + pr_notice("thinkpad_acpi native brightness control enabled\n");
>
> 'notice' level is quite high, why do we spam users with this?
>
Like above.
Another reason is most thinkpads are using native gpu driver to control
brightness, notice when thinkpad_acpi brightness is enabled.
Aaron
On Thu, Jul 2, 2020 at 1:51 PM Aaron Ma <[email protected]> wrote:
> On 7/2/20 5:30 PM, Andy Shevchenko wrote:
> > On Thu, Jul 2, 2020 at 11:55 AM Aaron Ma <[email protected]> wrote:
> >>
> >> When _BCL invalid, disable thinkpad_acpi backlight brightness control.
> >>
> >> brightness_enable is already checked at the beginning,
> >
> >> Always print notice when enabled brightness control.
> >
> > Why?
> >
>
> Default brightness_enable = 2, so this message will always be printed as before
> Actually no change here.
>
> > ...
> >
> >> + pr_notice("thinkpad_acpi native brightness control enabled\n");
> >
> > 'notice' level is quite high, why do we spam users with this?
> >
>
> Like above.
>
> Another reason is most thinkpads are using native gpu driver to control
> brightness, notice when thinkpad_acpi brightness is enabled.
So, based on the above, please elaborate and explain all this in the
commit message of new version, thanks!
--
With Best Regards,
Andy Shevchenko
When _BCL invalid, disable thinkpad_acpi backlight brightness control.
brightness_enable is already checked at the beginning.
Most new thinkpads are using GPU driver to control brightness now,
print notice when enabled brightness control even when brightness_enable = 1.
Signed-off-by: Aaron Ma <[email protected]>
---
drivers/platform/x86/thinkpad_acpi.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index ff7f0a4f2475..a52d6d457d6c 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -6955,10 +6955,13 @@ static int __init brightness_init(struct ibm_init_struct *iibm)
pr_warn("Cannot enable backlight brightness support, ACPI is already handling it. Refer to the acpi_backlight kernel parameter.\n");
return 1;
}
- } else if (tp_features.bright_acpimode && brightness_enable > 1) {
- pr_notice("Standard ACPI backlight interface not available, thinkpad_acpi native brightness control enabled\n");
+ } else if (!tp_features.bright_acpimode) {
+ pr_notice("thinkpad_acpi backlight interface not available\n");
+ return 1;
}
+ pr_notice("thinkpad_acpi native brightness control enabled\n");
+
/*
* Check for module parameter bogosity, note that we
* init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be
--
2.26.2
On Thu, Jul 2, 2020 at 2:07 PM Aaron Ma <[email protected]> wrote:
>
> When _BCL invalid, disable thinkpad_acpi backlight brightness control.
>
> brightness_enable is already checked at the beginning.
> Most new thinkpads are using GPU driver to control brightness now,
> print notice when enabled brightness control even when brightness_enable = 1.
> + } else if (!tp_features.bright_acpimode) {
> + pr_notice("thinkpad_acpi backlight interface not available\n");
> + return 1;
> }
>
> + pr_notice("thinkpad_acpi native brightness control enabled\n");
In both cases don't you see the duplication of module name in the messages?
--
With Best Regards,
Andy Shevchenko
When _BCL invalid, disable thinkpad_acpi backlight brightness control.
brightness_enable is already checked at the beginning.
Most new thinkpads are using GPU driver to control brightness now,
print notice when enabled brightness control even when brightness_enable = 1.
Signed-off-by: Aaron Ma <[email protected]>
---
drivers/platform/x86/thinkpad_acpi.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index ff7f0a4f2475..2b36d5416a3b 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -6955,10 +6955,13 @@ static int __init brightness_init(struct ibm_init_struct *iibm)
pr_warn("Cannot enable backlight brightness support, ACPI is already handling it. Refer to the acpi_backlight kernel parameter.\n");
return 1;
}
- } else if (tp_features.bright_acpimode && brightness_enable > 1) {
- pr_notice("Standard ACPI backlight interface not available, thinkpad_acpi native brightness control enabled\n");
+ } else if (!tp_features.bright_acpimode) {
+ pr_notice("ACPI backlight interface not available\n");
+ return 1;
}
+ pr_notice("ACPI native brightness control enabled\n");
+
/*
* Check for module parameter bogosity, note that we
* init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be
--
2.26.2
On Fri, Jul 10, 2020 at 4:56 AM Aaron Ma <[email protected]> wrote:
>
> When _BCL invalid, disable thinkpad_acpi backlight brightness control.
>
> brightness_enable is already checked at the beginning.
> Most new thinkpads are using GPU driver to control brightness now,
> print notice when enabled brightness control even when brightness_enable = 1.
>
Pushed to my review and testing queue, thanks!
> Signed-off-by: Aaron Ma <[email protected]>
> ---
> drivers/platform/x86/thinkpad_acpi.c | 7 +++++--
> 1 file changed, 5 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
> index ff7f0a4f2475..2b36d5416a3b 100644
> --- a/drivers/platform/x86/thinkpad_acpi.c
> +++ b/drivers/platform/x86/thinkpad_acpi.c
> @@ -6955,10 +6955,13 @@ static int __init brightness_init(struct ibm_init_struct *iibm)
> pr_warn("Cannot enable backlight brightness support, ACPI is already handling it. Refer to the acpi_backlight kernel parameter.\n");
> return 1;
> }
> - } else if (tp_features.bright_acpimode && brightness_enable > 1) {
> - pr_notice("Standard ACPI backlight interface not available, thinkpad_acpi native brightness control enabled\n");
> + } else if (!tp_features.bright_acpimode) {
> + pr_notice("ACPI backlight interface not available\n");
> + return 1;
> }
>
> + pr_notice("ACPI native brightness control enabled\n");
> +
> /*
> * Check for module parameter bogosity, note that we
> * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be
> --
> 2.26.2
>
--
With Best Regards,
Andy Shevchenko