code: plan9front

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[PATCH] Support for igfx on Celeron(R) 2957U (thanks Lorenzo Bivens)

> After some tinkering I managed to get igfx working on this device.
> hw cursor works.
> The only caveat is that I can only get video over hdmi...
> will revisit displayport later

--- a/lib/vgadb

+++ b/lib/vgadb

@@ -437,6 +437,8 @@

 	vid=0x8086 did=0x2a42	# Intel 4 Series Mobile

 	vid=0x8086 did=0x0a16	# Intel 4th Gen Core (HD 4400)

 	vid=0x8086 did=0x0412	# Intel 4th Gen Core (HD 4600)

+	vid=0x8086 did=0x3185	# Intel 9.5th Gen Core (UHD 600)

+	vid=0x8086 did=0x0a06

 	link=vga

 	hwgc=igfxhwgc

 	ctlr=igfx linear=1

--- a/sys/src/9/pc/vgaigfx.c

+++ b/sys/src/9/pc/vgaigfx.c

@@ -149,6 +149,7 @@

 	switch(scr->pci->did){

 	case 0x0412:	/* Haswell HD Graphics 4600 */

 	case 0x0a16:	/* Haswell HD Graphics 4400 */

+	case 0x0a06:

 		if(pipe > 3)

 			return nil;

 		if(pipe == 3)

--- a/sys/src/cmd/aux/vga/igfx.c

+++ b/sys/src/cmd/aux/vga/igfx.c

@@ -366,6 +366,8 @@

 	case 0x0a16:	/* HD 4400 - 4th Gen Core (ULT) */

 		igfx->isult = 1;

 		/* wet floor */

+	case 0x0a06:

+	case 0x3185:    /* UHD 600 - 9.5 Gen Core */

 	case 0x0412:	/* HD 4600 - 4th Gen Core */

 		return TypeHSW;

 	case 0x0166:	/* 3rd Gen Core - ThinkPad X230 */