[Intel-gfx] [PATCH 1/4] drm/i915: make new intel_tc.c use uncore accessors
Jani Nikula
jani.nikula at linux.intel.com
Tue Aug 6 08:29:54 UTC 2019
On Mon, 05 Aug 2019, Lucas De Marchi <lucas.demarchi at intel.com> wrote:
> On Mon, Aug 05, 2019 at 12:48:16PM +0300, Jani Nikula wrote:
>>On Wed, 03 Jul 2019, Lucas De Marchi <lucas.demarchi at intel.com> wrote:
>>> Let's make the just created intel_tc.c already follow the trend of using
>>> i915 instead of dev_priv and calling the intel_uncore_*() functions.
>>
>>I'm not sure we all agreed on using intel_uncore_{read,write}() in
>>display/ code yet though. There's considerably more register reads and
>>writes across the board than anywhere else.
>
> What's the alternative to converting to intel_uncore_*? Making it
> consistent with the rest of the code is the only sane thing IMO.
> Is anyone *disagreeing* with using intel_uncore_* for new code?
Please let's at least see how the separate de uncore with the separate
accessors that take drm_i915_priv instead of intel_uncore pan out [1]. I
think they'll help the display code considerably compared to using
intel_uncore_* and having to pass in uncore pointer. Any conversions
before that will require a revisit.
BR,
Jani.
[1] http://patchwork.freedesktop.org/patch/msgid/20190624203152.13725-4-daniele.ceraolospurio@intel.com
>
> Lucas De Marchi
>
>>
>>BR,
>>Jani.
>>
>>
>>>
>>> Signed-off-by: Lucas De Marchi <lucas.demarchi at intel.com>
>>> ---
>>> drivers/gpu/drm/i915/display/intel_tc.c | 57 ++++++++++++++-----------
>>> 1 file changed, 31 insertions(+), 26 deletions(-)
>>>
>>> diff --git a/drivers/gpu/drm/i915/display/intel_tc.c b/drivers/gpu/drm/i915/display/intel_tc.c
>>> index 53103a9aa8a7..1a9dd32fb0a5 100644
>>> --- a/drivers/gpu/drm/i915/display/intel_tc.c
>>> +++ b/drivers/gpu/drm/i915/display/intel_tc.c
>>> @@ -24,11 +24,12 @@ static const char *tc_port_mode_name(enum tc_port_mode mode)
>>>
>>> u32 intel_tc_port_get_lane_mask(struct intel_digital_port *dig_port)
>>> {
>>> - struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev);
>>> - enum tc_port tc_port = intel_port_to_tc(dev_priv, dig_port->base.port);
>>> + struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
>>> + enum tc_port tc_port = intel_port_to_tc(i915, dig_port->base.port);
>>> + struct intel_uncore *uncore = &i915->uncore;
>>> u32 lane_mask;
>>>
>>> - lane_mask = I915_READ(PORT_TX_DFLEXDPSP);
>>> + lane_mask = intel_uncore_read(uncore, PORT_TX_DFLEXDPSP);
>>>
>>> WARN_ON(lane_mask == 0xffffffff);
>>>
>>> @@ -38,7 +39,7 @@ u32 intel_tc_port_get_lane_mask(struct intel_digital_port *dig_port)
>>>
>>> int intel_tc_port_fia_max_lane_count(struct intel_digital_port *dig_port)
>>> {
>>> - struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev);
>>> + struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
>>> intel_wakeref_t wakeref;
>>> u32 lane_mask;
>>>
>>> @@ -46,7 +47,7 @@ int intel_tc_port_fia_max_lane_count(struct intel_digital_port *dig_port)
>>> return 4;
>>>
>>> lane_mask = 0;
>>> - with_intel_display_power(dev_priv, POWER_DOMAIN_DISPLAY_CORE, wakeref)
>>> + with_intel_display_power(i915, POWER_DOMAIN_DISPLAY_CORE, wakeref)
>>> lane_mask = intel_tc_port_get_lane_mask(dig_port);
>>>
>>> switch (lane_mask) {
>>> @@ -89,12 +90,13 @@ static void tc_port_fixup_legacy_flag(struct intel_digital_port *dig_port,
>>>
>>> static u32 tc_port_live_status_mask(struct intel_digital_port *dig_port)
>>> {
>>> - struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev);
>>> - enum tc_port tc_port = intel_port_to_tc(dev_priv, dig_port->base.port);
>>> + struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
>>> + enum tc_port tc_port = intel_port_to_tc(i915, dig_port->base.port);
>>> + struct intel_uncore *uncore = &i915->uncore;
>>> u32 mask = 0;
>>> u32 val;
>>>
>>> - val = I915_READ(PORT_TX_DFLEXDPSP);
>>> + val = intel_uncore_read(uncore, PORT_TX_DFLEXDPSP);
>>>
>>> if (val == 0xffffffff) {
>>> DRM_DEBUG_KMS("Port %s: PHY in TCCOLD, nothing connected\n",
>>> @@ -107,7 +109,7 @@ static u32 tc_port_live_status_mask(struct intel_digital_port *dig_port)
>>> if (val & TC_LIVE_STATE_TC(tc_port))
>>> mask |= BIT(TC_PORT_DP_ALT);
>>>
>>> - if (I915_READ(SDEISR) & SDE_TC_HOTPLUG_ICP(tc_port))
>>> + if (intel_uncore_read(uncore, SDEISR) & SDE_TC_HOTPLUG_ICP(tc_port))
>>> mask |= BIT(TC_PORT_LEGACY);
>>>
>>> /* The sink can be connected only in a single mode. */
>>> @@ -119,11 +121,12 @@ static u32 tc_port_live_status_mask(struct intel_digital_port *dig_port)
>>>
>>> static bool icl_tc_phy_status_complete(struct intel_digital_port *dig_port)
>>> {
>>> - struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev);
>>> - enum tc_port tc_port = intel_port_to_tc(dev_priv, dig_port->base.port);
>>> + struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
>>> + enum tc_port tc_port = intel_port_to_tc(i915, dig_port->base.port);
>>> + struct intel_uncore *uncore = &i915->uncore;
>>> u32 val;
>>>
>>> - val = I915_READ(PORT_TX_DFLEXDPPMS);
>>> + val = intel_uncore_read(uncore, PORT_TX_DFLEXDPPMS);
>>> if (val == 0xffffffff) {
>>> DRM_DEBUG_KMS("Port %s: PHY in TCCOLD, assuming not complete\n",
>>> dig_port->tc_port_name);
>>> @@ -136,11 +139,12 @@ static bool icl_tc_phy_status_complete(struct intel_digital_port *dig_port)
>>> static bool icl_tc_phy_set_safe_mode(struct intel_digital_port *dig_port,
>>> bool enable)
>>> {
>>> - struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev);
>>> - enum tc_port tc_port = intel_port_to_tc(dev_priv, dig_port->base.port);
>>> + struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
>>> + enum tc_port tc_port = intel_port_to_tc(i915, dig_port->base.port);
>>> + struct intel_uncore *uncore = &i915->uncore;
>>> u32 val;
>>>
>>> - val = I915_READ(PORT_TX_DFLEXDPCSSS);
>>> + val = intel_uncore_read(uncore, PORT_TX_DFLEXDPCSSS);
>>> if (val == 0xffffffff) {
>>> DRM_DEBUG_KMS("Port %s: PHY in TCCOLD, can't set safe-mode to %s\n",
>>> dig_port->tc_port_name,
>>> @@ -153,7 +157,7 @@ static bool icl_tc_phy_set_safe_mode(struct intel_digital_port *dig_port,
>>> if (!enable)
>>> val |= DP_PHY_MODE_STATUS_NOT_SAFE(tc_port);
>>>
>>> - I915_WRITE(PORT_TX_DFLEXDPCSSS, val);
>>> + intel_uncore_write(uncore, PORT_TX_DFLEXDPCSSS, val);
>>>
>>> if (enable && wait_for(!icl_tc_phy_status_complete(dig_port), 10))
>>> DRM_DEBUG_KMS("Port %s: PHY complete clear timed out\n",
>>> @@ -164,11 +168,12 @@ static bool icl_tc_phy_set_safe_mode(struct intel_digital_port *dig_port,
>>>
>>> static bool icl_tc_phy_is_in_safe_mode(struct intel_digital_port *dig_port)
>>> {
>>> - struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev);
>>> - enum tc_port tc_port = intel_port_to_tc(dev_priv, dig_port->base.port);
>>> + struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
>>> + enum tc_port tc_port = intel_port_to_tc(i915, dig_port->base.port);
>>> + struct intel_uncore *uncore = &i915->uncore;
>>> u32 val;
>>>
>>> - val = I915_READ(PORT_TX_DFLEXDPCSSS);
>>> + val = intel_uncore_read(uncore, PORT_TX_DFLEXDPCSSS);
>>> if (val == 0xffffffff) {
>>> DRM_DEBUG_KMS("Port %s: PHY in TCCOLD, assume safe mode\n",
>>> dig_port->tc_port_name);
>>> @@ -317,11 +322,11 @@ intel_tc_port_get_target_mode(struct intel_digital_port *dig_port)
>>> static void intel_tc_port_reset_mode(struct intel_digital_port *dig_port,
>>> int required_lanes)
>>> {
>>> - struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev);
>>> + struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
>>> enum tc_port_mode old_tc_mode = dig_port->tc_mode;
>>>
>>> - intel_display_power_flush_work(dev_priv);
>>> - WARN_ON(intel_display_power_is_enabled(dev_priv,
>>> + intel_display_power_flush_work(i915);
>>> + WARN_ON(intel_display_power_is_enabled(i915,
>>> intel_aux_power_domain(dig_port)));
>>>
>>> icl_tc_phy_disconnect(dig_port);
>>> @@ -404,10 +409,10 @@ bool intel_tc_port_connected(struct intel_digital_port *dig_port)
>>> static void __intel_tc_port_lock(struct intel_digital_port *dig_port,
>>> int required_lanes)
>>> {
>>> - struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev);
>>> + struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
>>> intel_wakeref_t wakeref;
>>>
>>> - wakeref = intel_display_power_get(dev_priv, POWER_DOMAIN_DISPLAY_CORE);
>>> + wakeref = intel_display_power_get(i915, POWER_DOMAIN_DISPLAY_CORE);
>>>
>>> mutex_lock(&dig_port->tc_lock);
>>>
>>> @@ -426,12 +431,12 @@ void intel_tc_port_lock(struct intel_digital_port *dig_port)
>>>
>>> void intel_tc_port_unlock(struct intel_digital_port *dig_port)
>>> {
>>> - struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev);
>>> + struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
>>> intel_wakeref_t wakeref = fetch_and_zero(&dig_port->tc_lock_wakeref);
>>>
>>> mutex_unlock(&dig_port->tc_lock);
>>>
>>> - intel_display_power_put_async(dev_priv, POWER_DOMAIN_DISPLAY_CORE,
>>> + intel_display_power_put_async(i915, POWER_DOMAIN_DISPLAY_CORE,
>>> wakeref);
>>> }
>>
>>--
>>Jani Nikula, Intel Open Source Graphics Center
--
Jani Nikula, Intel Open Source Graphics Center
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