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| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2014-08-15 01:22:03 +0300 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2014-09-03 11:05:19 +0200 |
| commit | d9d9bced0a711ab5c14f8a6b6df497e5f27b783d (patch) | |
| tree | 90a61727a8f30966c37c857d7ca2951b921e5b30 /drivers/gpu/drm/i915/dvo_ns2501.c | |
| parent | bae06ca122a5f37bdd4d8faedae7881f53b145cd (diff) | |
| download | talos-obmc-linux-d9d9bced0a711ab5c14f8a6b6df497e5f27b783d.tar.gz talos-obmc-linux-d9d9bced0a711ab5c14f8a6b6df497e5f27b783d.zip | |
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>
Diffstat (limited to 'drivers/gpu/drm/i915/dvo_ns2501.c')
| -rw-r--r-- | drivers/gpu/drm/i915/dvo_ns2501.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/dvo_ns2501.c b/drivers/gpu/drm/i915/dvo_ns2501.c index b2785716be2a..345235b12601 100644 --- a/drivers/gpu/drm/i915/dvo_ns2501.c +++ b/drivers/gpu/drm/i915/dvo_ns2501.c @@ -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++) |
