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