2012/3/20 Takashi Iwai ti...@suse.de:
This patch adds a workaround for that problem by checking the initial
LVDS register value in VBT.
Reviewed-by: Rodrigo Vivi rodrigo.v...@gmail.com
Reviewed-by: Adam Jackson a...@redhat.com
Signed-off-by: Takashi Iwai ti...@suse.de
Tested on 4 laptops.
On Tue, Mar 20, 2012 at 01:07:05PM +0100, Takashi Iwai wrote:
Currently i915 driver checks [PCH_]LVDS register bits to decide
whether to set up the dual-link or the single-link mode. This relies
implicitly on that BIOS initializes the register properly at boot.
However, BIOS doesn't
At Tue, 20 Mar 2012 11:01:22 +0100,
Daniel Vetter wrote:
On Mon, Mar 19, 2012 at 12:07:36PM +0100, Takashi Iwai wrote:
Currently i915 driver checks [PCH_]LVDS register bits to decide
whether to set up the dual-link or the single-link mode. This relies
implicitly on that BIOS initializes
#part sign=pgpmime
On Tue, 20 Mar 2012 13:04:41 +0100, Takashi Iwai ti...@suse.de wrote:
Since checking the lid state is tricky and unreliable, the practical
check would be simply reading the first LVDS reg and seeing whether it
was initialized or not. It seems that it reads to 0x02 when
Altough Keith's idea is very good I tested here with many systems that
are already working nowadays and it didn't break anything. Including
atom at 945gme, ironlake, sandybridge and ivybridge... including
single and dual channel modes...
Tested-by: Rodrigo Vivi rodrigo.v...@gmail.com
On Tue, Mar
At Sat, 17 Mar 2012 12:01:17 -0700,
Keith Packard wrote:
#part sign=pgpmime
On Sat, 17 Mar 2012 08:59:56 +0100, Takashi Iwai ti...@suse.de wrote:
Well, the LVDS reg data isn't in lvds_dvo_timing but in lvds_fp_timing,
thus you need to look at a different entry in anyway.
Right, a
At Fri, 16 Mar 2012 16:18:03 -0700,
Keith Packard wrote:
#part sign=pgpmime
On Fri, 16 Mar 2012 22:41:12 +0100, Takashi Iwai ti...@suse.de wrote:
+/* read the initial LVDS register value for the given panel mode */
+static unsigned int get_lvds_reg_val(const struct bdb_header *bdb,
+
#part sign=pgpmime
On Sat, 17 Mar 2012 08:59:56 +0100, Takashi Iwai ti...@suse.de wrote:
Well, the LVDS reg data isn't in lvds_dvo_timing but in lvds_fp_timing,
thus you need to look at a different entry in anyway.
Right, a parallel function which returns the lvds_fp_timing structure
instead
#part sign=pgpmime
On Fri, 16 Mar 2012 22:41:12 +0100, Takashi Iwai ti...@suse.de wrote:
+/* read the initial LVDS register value for the given panel mode */
+static unsigned int get_lvds_reg_val(const struct bdb_header *bdb,
+ const struct
