drm/i915: Init important ns2501 registers

In my earlier rewrite I missed a few important registers. Thomas Richter
noticed that they're needed to make his machine resume correctly.

Looks like IEGD does a one time init of these three registers. We don't
have a good one time init place in the ns2501 driver, so let's just
stick them into the .mode_set() hook and see if that helps things along.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Thomas Richter <richter@rus.uni-stuttgart.de>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ville Syrjälä 2014-08-15 01:22:03 +03:00 committed by Daniel Vetter
parent bae06ca122
commit d9d9bced0a
1 changed files with 10 additions and 0 deletions

View File

@ -342,6 +342,12 @@ static const struct ns2501_reg regs_1024x768[][86] = {
},
};
static const struct ns2501_reg regs_init[] = {
[0] = { .offset = 0x35, .value = 0xff, },
[1] = { .offset = 0x34, .value = 0x00, },
[2] = { .offset = 0x08, .value = 0x30, },
};
struct ns2501_priv {
bool quiet;
const struct ns2501_reg *regs;
@ -544,6 +550,10 @@ static void ns2501_mode_set(struct intel_dvo_device *dvo,
else
return;
/* Hopefully doing it every time won't hurt... */
for (i = 0; i < ARRAY_SIZE(regs_init); i++)
ns2501_writeb(dvo, regs_init[i].offset, regs_init[i].value);
ns->regs = regs_1024x768[mode_idx];
for (i = 0; i < 84; i++)