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drm/i915: sanitize PUNIT register macro definitions 

In the upcoming patches we'll need to access the rest of the fields in
the punit power gating register, so prepare for that.

v2:
- add doc reference for the power well subsystem IDs (Jesse)
- remove IDs for non-existant DPIO_RX[23] subsystems (Jesse)

Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Imre Deak 2014-03-04 19:23:02 +02:00 committed by Daniel Vetter
parent 7f9e192f1b
commit a30180a5a3
2 changed files with 25 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
drivers/gpu/drm/i915/i915_reg.h
View File

@ -377,14 +377,30 @@
#define DSPFREQSTAT_MASK (0x3 << DSPFREQSTAT_SHIFT)
#define DSPFREQGUAR_SHIFT 14
#define DSPFREQGUAR_MASK (0x3 << DSPFREQGUAR_SHIFT)
/* See the PUNIT HAS v0.8 for the below bits */
enum punit_power_well {
PUNIT_POWER_WELL_RENDER = 0,
PUNIT_POWER_WELL_MEDIA = 1,
PUNIT_POWER_WELL_DISP2D = 3,
PUNIT_POWER_WELL_DPIO_CMN_BC = 5,
PUNIT_POWER_WELL_DPIO_TX_B_LANES_01 = 6,
PUNIT_POWER_WELL_DPIO_TX_B_LANES_23 = 7,
PUNIT_POWER_WELL_DPIO_TX_C_LANES_01 = 8,
PUNIT_POWER_WELL_DPIO_TX_C_LANES_23 = 9,
PUNIT_POWER_WELL_DPIO_RX0 = 10,
PUNIT_POWER_WELL_DPIO_RX1 = 11,
PUNIT_POWER_WELL_NUM,
};
#define PUNIT_REG_PWRGT_CTRL 0x60
#define PUNIT_REG_PWRGT_STATUS 0x61
#define PUNIT_CLK_GATE 1
#define PUNIT_PWR_RESET 2
#define PUNIT_PWR_GATE 3
#define RENDER_PWRGT (PUNIT_PWR_GATE << 0)
#define MEDIA_PWRGT (PUNIT_PWR_GATE << 2)
#define DISP2D_PWRGT (PUNIT_PWR_GATE << 6)
#define PUNIT_PWRGT_MASK(power_well) (3 << ((power_well) * 2))
#define PUNIT_PWRGT_PWR_ON(power_well) (0 << ((power_well) * 2))
#define PUNIT_PWRGT_CLK_GATE(power_well) (1 << ((power_well) * 2))
#define PUNIT_PWRGT_RESET(power_well) (2 << ((power_well) * 2))
#define PUNIT_PWRGT_PWR_GATE(power_well) (3 << ((power_well) * 2))
#define PUNIT_REG_GPU_LFM 0xd3
#define PUNIT_REG_GPU_FREQ_REQ 0xd4

4
drivers/gpu/drm/i915/intel_uncore.c
View File

@ -361,7 +361,9 @@ void intel_uncore_sanitize(struct drm_device *dev)
mutex_lock(&dev_priv->rps.hw_lock);
reg_val = vlv_punit_read(dev_priv, PUNIT_REG_PWRGT_STATUS);
if (reg_val & (RENDER_PWRGT | MEDIA_PWRGT | DISP2D_PWRGT))
if (reg_val & (PUNIT_PWRGT_PWR_GATE(PUNIT_POWER_WELL_RENDER) |
PUNIT_PWRGT_PWR_GATE(PUNIT_POWER_WELL_MEDIA) |
PUNIT_PWRGT_PWR_GATE(PUNIT_POWER_WELL_DISP2D)))
vlv_punit_write(dev_priv, PUNIT_REG_PWRGT_CTRL, 0x0);
mutex_unlock(&dev_priv->rps.hw_lock);