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drm/i915: Consult aux_ch instead of port in ->get_aux_clock_divider()

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While it seems totally unlikely that any system would mix a cpu/north
aux channel with a pch/south port (or vice versa) we should still
consult intel_dp->aux_ch rather than encoder->port when figuring out
which clock is actually used by the aux ch.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180222181036.15251-5-ville.syrjala@linux.intel.com
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> #irc
This commit is contained in:
Ville Syrjälä 2018-02-22 20:10:33 +02:00
parent 367a35a6c6
commit 449059a969
1 changed files with 5 additions and 8 deletions
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13
drivers/gpu/drm/i915/intel_dp.c
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@ -950,8 +950,7 @@ intel_dp_aux_wait_done(struct intel_dp *intel_dp, bool has_aux_irq)
static uint32_t g4x_get_aux_clock_divider(struct intel_dp *intel_dp, int index)
{
struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
struct drm_i915_private *dev_priv = to_i915(intel_dig_port->base.base.dev);
struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
if (index)
return 0;
@ -965,8 +964,7 @@ static uint32_t g4x_get_aux_clock_divider(struct intel_dp *intel_dp, int index)
static uint32_t ilk_get_aux_clock_divider(struct intel_dp *intel_dp, int index)
{
struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
struct drm_i915_private *dev_priv = to_i915(intel_dig_port->base.base.dev);
struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
if (index)
return 0;
@ -976,7 +974,7 @@ static uint32_t ilk_get_aux_clock_divider(struct intel_dp *intel_dp, int index)
* like to run at 2MHz. So, take the cdclk or PCH rawclk value and
* divide by 2000 and use that
*/
if (intel_dig_port->base.port == PORT_A)
if (intel_dp->aux_ch == AUX_CH_A)
return DIV_ROUND_CLOSEST(dev_priv->cdclk.hw.cdclk, 2000);
else
return DIV_ROUND_CLOSEST(dev_priv->rawclk_freq, 2000);
@ -984,10 +982,9 @@ static uint32_t ilk_get_aux_clock_divider(struct intel_dp *intel_dp, int index)
static uint32_t hsw_get_aux_clock_divider(struct intel_dp *intel_dp, int index)
{
struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
struct drm_i915_private *dev_priv = to_i915(intel_dig_port->base.base.dev);
struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
if (intel_dig_port->base.port != PORT_A && HAS_PCH_LPT_H(dev_priv)) {
if (intel_dp->aux_ch != AUX_CH_A && HAS_PCH_LPT_H(dev_priv)) {
/* Workaround for non-ULT HSW */
switch (index) {
case 0: return 63;