Commit a391e069 authored by Jani Nikula's avatar Jani Nikula
Browse files

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



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: default avatarJani Nikula <jani.nikula@intel.com>
Reviewed-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/42fd9cd777c5cc9a8d48db9dd8306924c735918e.1644489329.git.jani.nikula@intel.com
parent 69898171

drivers/gpu/drm/i915/display/intel_opregion.c

+9 −4
Original line number Diff line number Diff line
@@ -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;