提交 4b4147c3 编写于 作者: D Daniel Vetter

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 7cf41601
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: NKenneth Graunke <kenneth@whitecape.org>
Signed-Off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
上级 12f55818
......@@ -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
......
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