Commit ee279218 authored by Ville Syrjälä's avatar Ville Syrjälä Committed by Daniel Vetter

drm/i915: Enable DPIO SUS clock gating on CHV

CHV has supports some form of automagic clock gating for the
DPIO SUS clock. We can simply enable the magic bits and the
hardware should take care of the rest.
Signed-off-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: default avatarDeepak S <deepak.s@linux.intel.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent 0047eedc
......@@ -1143,6 +1143,10 @@ enum skl_disp_power_wells {
#define CHV_CMN_DW28 0x8170
#define DPIO_CL1POWERDOWNEN (1 << 23)
#define DPIO_DYNPWRDOWNEN_CH0 (1 << 22)
#define DPIO_SUS_CLK_CONFIG_ON (0 << 0)
#define DPIO_SUS_CLK_CONFIG_CLKREQ (1 << 0)
#define DPIO_SUS_CLK_CONFIG_GATE (2 << 0)
#define DPIO_SUS_CLK_CONFIG_GATE_CLKREQ (3 << 0)
#define CHV_CMN_DW30 0x8178
#define DPIO_LRC_BYPASS (1 << 3)
......
......@@ -988,7 +988,8 @@ static void chv_dpio_cmn_power_well_enable(struct drm_i915_private *dev_priv,
/* Enable dynamic power down */
tmp = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW28);
tmp |= DPIO_DYNPWRDOWNEN_CH0 | DPIO_CL1POWERDOWNEN;
tmp |= DPIO_DYNPWRDOWNEN_CH0 | DPIO_CL1POWERDOWNEN |
DPIO_SUS_CLK_CONFIG_GATE_CLKREQ;
vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW28, tmp);
if (power_well->data == PUNIT_POWER_WELL_DPIO_CMN_BC) {
......
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