intel_extreme: set/get brightness in legacy mode for gen2,i915GM,i945GM

untested, see #15448 Change-Id: Iaf0cdacd39ebadfc143b072bdd6f5435a1394f45 Reviewed-on: https://review.haiku-os.org/c/haiku/+/5222 Tested-by: Commit checker robot <[email protected]> Reviewed-by: Adrien Destugues <[email protected]>
2022-04-21 18:29:23 +00:00
parent 1043e934e4
commit 6c02429697
3 changed files with 72 additions and 2 deletions
@@ -398,7 +398,9 @@ enum {

 	INTEL_GET_DEVICE_NAME,
 	INTEL_ALLOCATE_GRAPHICS_MEMORY,
-	INTEL_FREE_GRAPHICS_MEMORY
+	INTEL_FREE_GRAPHICS_MEMORY,
+	INTEL_GET_BRIGHTNESS_LEGACY,
+	INTEL_SET_BRIGHTNESS_LEGACY
 };

 // retrieve the area_id of the kernel/accelerant shared info
@@ -422,6 +424,12 @@ struct intel_free_graphics_memory {
 	addr_t	buffer_base;
 };

+// brightness legacy
+struct intel_brightness_legacy {
+	uint32 	magic;
+	uint8	lpc;
+};
+
 //----------------------------------------------------------
 // Register definitions, taken from X driver

@@ -535,6 +543,9 @@ struct intel_free_graphics_memory {
 #define BDW_GTT_SIZE_4MB				(2 << 6)
 #define BDW_GTT_SIZE_8MB				(3 << 6)

+// Gen2, i915GM, i945GM
+#define LEGACY_BACKLIGHT_BRIGHTNESS		0xf4
+
 // graphics page translation table
 #define INTEL_PAGE_TABLE_CONTROL		0x02020
 #define PAGE_TABLE_ENABLED				0x00000001
@@ -1218,6 +1229,7 @@ struct intel_free_graphics_memory {
 #define MCH_BLC_PWM_CTL                 (0x1254 | REGS_NORTH_PIPE_AND_PORT)
 	// Linux VLV_BLC_PWM_CTL (one register per pipe) or BLC_PWM_CTL (a single register that can be
 	// programmed for use on either pipe)
+#define BLM_LEGACY_MODE					(1 << 16)

 // ring buffer commands