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drm/i915: fix up PCH backlight #define mixup 

I so totally suck.

This can cause a black screen if (for whatever reason) the bios
hasn't set this bit itself.

This regression has been introduced in

commit 7cf4160148
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Tue Jun 5 10:07:09 2012 +0200

    drm/i915: clear up backlight #define confusion on gen4+

Tested-by: Kenneth Graunke <kenneth@whitecape.org>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Daniel Vetter 2012-07-11 00:31:06 +02:00
parent 12f55818ba
commit 4b4147c38f
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/i915/i915_reg.h
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@ -1900,7 +1900,7 @@
/* PCH CTL1 is totally different, all but the below bits are reserved. CTL2 is
* like the normal CTL from gen4 and earlier. Hooray for confusing naming. */
#define BLC_PWM_PCH_CTL1 0xc8250
#define BLM_PCH_PWM_ENABLE (1 << 30)
#define BLM_PCH_PWM_ENABLE (1 << 31)
#define BLM_PCH_OVERRIDE_ENABLE (1 << 30)
#define BLM_PCH_POLARITY (1 << 29)
#define BLC_PWM_PCH_CTL2 0xc8254