diff options
| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2012-06-05 10:07:09 +0200 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2012-06-12 19:25:46 +0200 |
| commit | 7cf4160148136deb31ee5f2802857dd935a38529 (patch) | |
| tree | a6b8cc7e267b0e5a08b83fe0432474fc21a6892d /drivers/gpu/drm/i915/i915_reg.h | |
| parent | 534b5a5341cb7e16a98d44623d8fce9464ebf22c (diff) | |
drm/i915: clear up backlight #define confusion on gen4+
- Regroup definitions for BLC_PWM_CTL so that they're all together and
and ordered according to the bitfields.
- Add all missing definitions for BLC_PWM_CTL2.
- Use the BLM_ (for backlight modulation) prefix consistently.
- Note that combination mode (i.e. also taking the legacy backlight
control value from pci config space into account) is gen4 only.
- Move the new registers for PCH-split machines up, they're an almost
match for the gen4 defitions. Prefix the special PCH-only bits with
BLM_PCH_. Also add the pipe C select bit for ivb.
- Rip out the second pair of PCH polarity definitions - they're only
valid on early (pre-production) ilk silicon.
- Adapt the existing code to use the new definitions. This has the
nice benefit of killing a magic (1 << 30) left behind be Jesse
Barnes.
No functional changes in this patch.
Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_reg.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 55 |
1 files changed, 35 insertions, 20 deletions
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 20244b971fc6..c4b1a2b45bb4 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -1807,18 +1807,35 @@ #define PFIT_AUTO_RATIOS 0x61238 /* Backlight control */ -#define BLC_PWM_CTL 0x61254 -#define BACKLIGHT_MODULATION_FREQ_SHIFT (17) #define BLC_PWM_CTL2 0x61250 /* 965+ only */ -#define BLM_COMBINATION_MODE (1 << 30) +#define BLM_PWM_ENABLE (1 << 31) +#define BLM_COMBINATION_MODE (1 << 30) /* gen4 only */ +#define BLM_PIPE_SELECT (1 << 29) +#define BLM_PIPE_SELECT_IVB (3 << 29) +#define BLM_PIPE_A (0 << 29) +#define BLM_PIPE_B (1 << 29) +#define BLM_PIPE_C (2 << 29) /* ivb + */ +#define BLM_PIPE(pipe) ((pipe) << 29) +#define BLM_POLARITY_I965 (1 << 28) /* gen4 only */ +#define BLM_PHASE_IN_INTERUPT_STATUS (1 << 26) +#define BLM_PHASE_IN_ENABLE (1 << 25) +#define BLM_PHASE_IN_INTERUPT_ENABL (1 << 24) +#define BLM_PHASE_IN_TIME_BASE_SHIFT (16) +#define BLM_PHASE_IN_TIME_BASE_MASK (0xff << 16) +#define BLM_PHASE_IN_COUNT_SHIFT (8) +#define BLM_PHASE_IN_COUNT_MASK (0xff << 8) +#define BLM_PHASE_IN_INCR_SHIFT (0) +#define BLM_PHASE_IN_INCR_MASK (0xff << 0) +#define BLC_PWM_CTL 0x61254 /* * This is the most significant 15 bits of the number of backlight cycles in a * complete cycle of the modulated backlight control. * * The actual value is this field multiplied by two. */ -#define BACKLIGHT_MODULATION_FREQ_MASK (0x7fff << 17) -#define BLM_LEGACY_MODE (1 << 16) +#define BACKLIGHT_MODULATION_FREQ_SHIFT (17) +#define BACKLIGHT_MODULATION_FREQ_MASK (0x7fff << 17) +#define BLM_LEGACY_MODE (1 << 16) /* gen2 only */ /* * This is the number of cycles out of the backlight modulation cycle for which * the backlight is on. @@ -1833,6 +1850,19 @@ #define BLC_HIST_CTL 0x61260 +/* New registers for PCH-split platforms. Safe where new bits show up, the + * register layout machtes with gen4 BLC_PWM_CTL[12]. */ +#define BLC_PWM_CPU_CTL2 0x48250 +#define BLC_PWM_CPU_CTL 0x48254 + +/* 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_OVERRIDE_ENABLE (1 << 30) +#define BLM_PCH_POLARITY (1 << 29) +#define BLC_PWM_PCH_CTL2 0xc8254 + /* TV port control */ #define TV_CTL 0x68000 /** Enables the TV encoder */ @@ -3840,21 +3870,6 @@ #define PCH_LVDS 0xe1180 #define LVDS_DETECTED (1 << 1) -#define BLC_PWM_CPU_CTL2 0x48250 -#define PWM_ENABLE (1 << 31) -#define PWM_PIPE_A (0 << 29) -#define PWM_PIPE_B (1 << 29) -#define BLC_PWM_CPU_CTL 0x48254 - -#define BLC_PWM_PCH_CTL1 0xc8250 -#define PWM_PCH_ENABLE (1 << 31) -#define PWM_POLARITY_ACTIVE_LOW (1 << 29) -#define PWM_POLARITY_ACTIVE_HIGH (0 << 29) -#define PWM_POLARITY_ACTIVE_LOW2 (1 << 28) -#define PWM_POLARITY_ACTIVE_HIGH2 (0 << 28) - -#define BLC_PWM_PCH_CTL2 0xc8254 - #define PCH_PP_STATUS 0xc7200 #define PCH_PP_CONTROL 0xc7204 #define PANEL_UNLOCK_REGS (0xabcd << 16) |