diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/vlv_dsi_pll.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/vlv_dsi_pll.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/vlv_dsi_pll.c b/drivers/gpu/drm/i915/display/vlv_dsi_pll.c index 90185b219447..0078973cd219 100644 --- a/drivers/gpu/drm/i915/display/vlv_dsi_pll.c +++ b/drivers/gpu/drm/i915/display/vlv_dsi_pll.c @@ -568,3 +568,26 @@ void bxt_dsi_reset_clocks(struct intel_encoder *encoder, enum port port) } intel_de_write(dev_priv, MIPI_EOT_DISABLE(port), CLOCKSTOP); } + +static void assert_dsi_pll(struct drm_i915_private *i915, bool state) +{ + bool cur_state; + + vlv_cck_get(i915); + cur_state = vlv_cck_read(i915, CCK_REG_DSI_PLL_CONTROL) & DSI_PLL_VCO_EN; + vlv_cck_put(i915); + + I915_STATE_WARN(cur_state != state, + "DSI PLL state assertion failure (expected %s, current %s)\n", + onoff(state), onoff(cur_state)); +} + +void assert_dsi_pll_enabled(struct drm_i915_private *i915) +{ + assert_dsi_pll(i915, true); +} + +void assert_dsi_pll_disabled(struct drm_i915_private *i915) +{ + assert_dsi_pll(i915, false); +} |