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drm/i915: Fix readout for cnl DPLL kdiv==3 

The readout code thinks that kdiv of 3 is 4. Fix it.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190207173230.22368-11-ville.syrjala@linux.intel.com
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
This commit is contained in:
Ville Syrjälä 2019-02-07 19:32:28 +02:00
parent dc41e918d1
commit 2ee7fd1efe
2 changed files with 3 additions and 3 deletions
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2
drivers/gpu/drm/i915/i915_reg.h
View File

@ -9850,7 +9850,7 @@ enum skl_power_gate {
#define DPLL_CFGCR1_KDIV(x) ((x) << 6)
#define DPLL_CFGCR1_KDIV_1 (1 << 6)
#define DPLL_CFGCR1_KDIV_2 (2 << 6)
#define DPLL_CFGCR1_KDIV_4 (4 << 6)
#define DPLL_CFGCR1_KDIV_3 (4 << 6)
#define DPLL_CFGCR1_PDIV_MASK (0xf << 2)
#define DPLL_CFGCR1_PDIV_SHIFT (2)
#define DPLL_CFGCR1_PDIV(x) ((x) << 2)

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

@ -1349,8 +1349,8 @@ int cnl_calc_wrpll_link(struct drm_i915_private *dev_priv,
case DPLL_CFGCR1_KDIV_2:
p2 = 2;
break;
case DPLL_CFGCR1_KDIV_4:
p2 = 4;
case DPLL_CFGCR1_KDIV_3:
p2 = 3;
break;
}