diff mbox series

[5/5] drm/i915/opregion: debug log about Mailbox #2 for backlight

Message ID 42fd9cd777c5cc9a8d48db9dd8306924c735918e.1644489329.git.jani.nikula@intel.com (mailing list archive)
State New, archived
Headers show
Series drm/i915/opregion: fixes and cleanups, RESEND | expand

Commit Message

Jani Nikula Feb. 10, 2022, 10:36 a.m. UTC
Start debug logging about the presence of the new Mailbox #2 for
backlight. Actual support is to be added later.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
---
 drivers/gpu/drm/i915/display/intel_opregion.c | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

Comments

Ville Syrjälä Feb. 10, 2022, 11:05 a.m. UTC | #1
On Thu, Feb 10, 2022 at 12:36:46PM +0200, Jani Nikula wrote:
> Start debug logging about the presence of the new Mailbox #2 for
> backlight. Actual support is to be added later.
> 
> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
> Signed-off-by: Jani Nikula <jani.nikula@intel.com>
> ---
>  drivers/gpu/drm/i915/display/intel_opregion.c | 13 +++++++++----
>  1 file changed, 9 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_opregion.c b/drivers/gpu/drm/i915/display/intel_opregion.c
> index 6e32ed6bbf4e..b1ad11b2ebb3 100644
> --- a/drivers/gpu/drm/i915/display/intel_opregion.c
> +++ b/drivers/gpu/drm/i915/display/intel_opregion.c
> @@ -47,10 +47,11 @@
>  #define OPREGION_ASLE_EXT_OFFSET	0x1C00
>  
>  #define OPREGION_SIGNATURE "IntelGraphicsMem"
> -#define MBOX_ACPI      (1<<0)
> -#define MBOX_SWSCI     (1<<1)
> -#define MBOX_ASLE      (1<<2)
> -#define MBOX_ASLE_EXT  (1<<4)
> +#define MBOX_ACPI		BIT(0)	/* Mailbox #1 */
> +#define MBOX_SWSCI		BIT(1)	/* Mailbox #2 (obsolete from v2.x) */
> +#define MBOX_ASLE		BIT(2)	/* Mailbox #3 */
> +#define MBOX_ASLE_EXT		BIT(4)	/* Mailbox #5 */
> +#define MBOX_BACKLIGHT		BIT(5)	/* Mailbox #2 (valid from v3.x) */

Opregion is such a lovely turd.

Series is
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>

>  
>  struct opregion_header {
>  	u8 signature[16];
> @@ -957,6 +958,10 @@ int intel_opregion_setup(struct drm_i915_private *dev_priv)
>  		opregion->asle_ext = base + OPREGION_ASLE_EXT_OFFSET;
>  	}
>  
> +	if (mboxes & MBOX_BACKLIGHT) {
> +		drm_dbg(&dev_priv->drm, "Mailbox #2 for backlight present\n");
> +	}
> +
>  	if (intel_load_vbt_firmware(dev_priv) == 0)
>  		goto out;
>  
> -- 
> 2.30.2
Jani Nikula Feb. 10, 2022, 4:17 p.m. UTC | #2
On Thu, 10 Feb 2022, Ville Syrjälä <ville.syrjala@linux.intel.com> wrote:
> On Thu, Feb 10, 2022 at 12:36:46PM +0200, Jani Nikula wrote:
>> Start debug logging about the presence of the new Mailbox #2 for
>> backlight. Actual support is to be added later.
>> 
>> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
>> Signed-off-by: Jani Nikula <jani.nikula@intel.com>
>> ---
>>  drivers/gpu/drm/i915/display/intel_opregion.c | 13 +++++++++----
>>  1 file changed, 9 insertions(+), 4 deletions(-)
>> 
>> diff --git a/drivers/gpu/drm/i915/display/intel_opregion.c b/drivers/gpu/drm/i915/display/intel_opregion.c
>> index 6e32ed6bbf4e..b1ad11b2ebb3 100644
>> --- a/drivers/gpu/drm/i915/display/intel_opregion.c
>> +++ b/drivers/gpu/drm/i915/display/intel_opregion.c
>> @@ -47,10 +47,11 @@
>>  #define OPREGION_ASLE_EXT_OFFSET	0x1C00
>>  
>>  #define OPREGION_SIGNATURE "IntelGraphicsMem"
>> -#define MBOX_ACPI      (1<<0)
>> -#define MBOX_SWSCI     (1<<1)
>> -#define MBOX_ASLE      (1<<2)
>> -#define MBOX_ASLE_EXT  (1<<4)
>> +#define MBOX_ACPI		BIT(0)	/* Mailbox #1 */
>> +#define MBOX_SWSCI		BIT(1)	/* Mailbox #2 (obsolete from v2.x) */
>> +#define MBOX_ASLE		BIT(2)	/* Mailbox #3 */
>> +#define MBOX_ASLE_EXT		BIT(4)	/* Mailbox #5 */
>> +#define MBOX_BACKLIGHT		BIT(5)	/* Mailbox #2 (valid from v3.x) */
>
> Opregion is such a lovely turd.

Tell me about it. I had to send v2 of patch 4/5 demoting the warn to dbg
because CI apparently has swsci mbox & version combos that supposedly
shouldn't exist. *sigh*.

> Series is
> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>

Thanks,
Jani.

>
>>  
>>  struct opregion_header {
>>  	u8 signature[16];
>> @@ -957,6 +958,10 @@ int intel_opregion_setup(struct drm_i915_private *dev_priv)
>>  		opregion->asle_ext = base + OPREGION_ASLE_EXT_OFFSET;
>>  	}
>>  
>> +	if (mboxes & MBOX_BACKLIGHT) {
>> +		drm_dbg(&dev_priv->drm, "Mailbox #2 for backlight present\n");
>> +	}
>> +
>>  	if (intel_load_vbt_firmware(dev_priv) == 0)
>>  		goto out;
>>  
>> -- 
>> 2.30.2
diff mbox series

Patch

diff --git a/drivers/gpu/drm/i915/display/intel_opregion.c b/drivers/gpu/drm/i915/display/intel_opregion.c
index 6e32ed6bbf4e..b1ad11b2ebb3 100644
--- a/drivers/gpu/drm/i915/display/intel_opregion.c
+++ b/drivers/gpu/drm/i915/display/intel_opregion.c
@@ -47,10 +47,11 @@ 
 #define OPREGION_ASLE_EXT_OFFSET	0x1C00
 
 #define OPREGION_SIGNATURE "IntelGraphicsMem"
-#define MBOX_ACPI      (1<<0)
-#define MBOX_SWSCI     (1<<1)
-#define MBOX_ASLE      (1<<2)
-#define MBOX_ASLE_EXT  (1<<4)
+#define MBOX_ACPI		BIT(0)	/* Mailbox #1 */
+#define MBOX_SWSCI		BIT(1)	/* Mailbox #2 (obsolete from v2.x) */
+#define MBOX_ASLE		BIT(2)	/* Mailbox #3 */
+#define MBOX_ASLE_EXT		BIT(4)	/* Mailbox #5 */
+#define MBOX_BACKLIGHT		BIT(5)	/* Mailbox #2 (valid from v3.x) */
 
 struct opregion_header {
 	u8 signature[16];
@@ -957,6 +958,10 @@  int intel_opregion_setup(struct drm_i915_private *dev_priv)
 		opregion->asle_ext = base + OPREGION_ASLE_EXT_OFFSET;
 	}
 
+	if (mboxes & MBOX_BACKLIGHT) {
+		drm_dbg(&dev_priv->drm, "Mailbox #2 for backlight present\n");
+	}
+
 	if (intel_load_vbt_firmware(dev_priv) == 0)
 		goto out;