From 63c9dae71dc53928a82deb32e4651a4a44c7a4fe Mon Sep 17 00:00:00 2001 From: =?utf8?q?Jos=C3=A9=20Roberto=20de=20Souza?= Date: Tue, 25 Jun 2019 18:40:53 -0700 Subject: [PATCH] drm/i915/ehl: Add voltage level requirement table MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit EHL has it own voltage level requirement depending on cd clock. BSpec: 21809 Cc: Clint Taylor Cc: Matt Roper Cc: Ville Syrjälä Reviewed-by: Matt Roper Signed-off-by: José Roberto de Souza Link: https://patchwork.freedesktop.org/patch/msgid/20190626014053.30541-3-jose.souza@intel.com --- drivers/gpu/drm/i915/display/intel_cdclk.c | 35 ++++++++++++++-------- 1 file changed, 23 insertions(+), 12 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_cdclk.c b/drivers/gpu/drm/i915/display/intel_cdclk.c index 0dda64482443e..0b8b8ae3b7fca 100644 --- a/drivers/gpu/drm/i915/display/intel_cdclk.c +++ b/drivers/gpu/drm/i915/display/intel_cdclk.c @@ -1866,14 +1866,23 @@ static void icl_set_cdclk(struct drm_i915_private *dev_priv, dev_priv->cdclk.hw.voltage_level = cdclk_state->voltage_level; } -static u8 icl_calc_voltage_level(int cdclk) +static u8 icl_calc_voltage_level(struct drm_i915_private *dev_priv, int cdclk) { - if (cdclk > 556800) - return 2; - else if (cdclk > 312000) - return 1; - else - return 0; + if (IS_ELKHARTLAKE(dev_priv)) { + if (cdclk > 312000) + return 2; + else if (cdclk > 180000) + return 1; + else + return 0; + } else { + if (cdclk > 556800) + return 2; + else if (cdclk > 312000) + return 1; + else + return 0; + } } static void icl_get_cdclk(struct drm_i915_private *dev_priv, @@ -1924,7 +1933,7 @@ out: * at least what the CDCLK frequency requires. */ cdclk_state->voltage_level = - icl_calc_voltage_level(cdclk_state->cdclk); + icl_calc_voltage_level(dev_priv, cdclk_state->cdclk); } static void icl_init_cdclk(struct drm_i915_private *dev_priv) @@ -1959,7 +1968,8 @@ sanitize: sanitized_state.vco = icl_calc_cdclk_pll_vco(dev_priv, sanitized_state.cdclk); sanitized_state.voltage_level = - icl_calc_voltage_level(sanitized_state.cdclk); + icl_calc_voltage_level(dev_priv, + sanitized_state.cdclk); icl_set_cdclk(dev_priv, &sanitized_state, INVALID_PIPE); } @@ -1970,7 +1980,8 @@ static void icl_uninit_cdclk(struct drm_i915_private *dev_priv) cdclk_state.cdclk = cdclk_state.bypass; cdclk_state.vco = 0; - cdclk_state.voltage_level = icl_calc_voltage_level(cdclk_state.cdclk); + cdclk_state.voltage_level = icl_calc_voltage_level(dev_priv, + cdclk_state.cdclk); icl_set_cdclk(dev_priv, &cdclk_state, INVALID_PIPE); } @@ -2561,7 +2572,7 @@ static int icl_modeset_calc_cdclk(struct intel_atomic_state *state) state->cdclk.logical.vco = vco; state->cdclk.logical.cdclk = cdclk; state->cdclk.logical.voltage_level = - max(icl_calc_voltage_level(cdclk), + max(icl_calc_voltage_level(dev_priv, cdclk), cnl_compute_min_voltage_level(state)); if (!state->active_crtcs) { @@ -2571,7 +2582,7 @@ static int icl_modeset_calc_cdclk(struct intel_atomic_state *state) state->cdclk.actual.vco = vco; state->cdclk.actual.cdclk = cdclk; state->cdclk.actual.voltage_level = - icl_calc_voltage_level(cdclk); + icl_calc_voltage_level(dev_priv, cdclk); } else { state->cdclk.actual = state->cdclk.logical; } -- 2.39.5