On Fri, 2018-05-11 at 16:00 -0700, Dhinakaran Pandiyan wrote:
> PSR hardware and hence the driver code for VLV and CHV deviates a lot
> from
> their DDI counterparts. While the feature has been disabled for a
> long time
> now, retaining support for these platforms is a maintenance burden.
> There
> have been multiple refactoring commits to just keep the existing code
> for
> these platforms in line with the rest. There are known issues that
> need to
> be fixed to enable PSR on these platforms, and there is no PSR
> capable
> platform in CI to ensure the code does not break again if we get
> around to
> fixing the existing issues. On account of all these reasons, let's
> nuke
> this code for now and bring it back if a need arises in the future.
>
> Cc: Jani Nikula <jani.nik...@intel.com>
> Cc: Rodrigo Vivi <rodrigo.v...@intel.com>
> Cc: Ville Syrjälä <ville.syrj...@linux.intel.com>
Reviewed-by: José Roberto de Souza <jose.so...@intel.com>
Really happy to see and review this patch :D
> Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandi...@intel.com>
> ---
> drivers/gpu/drm/i915/i915_debugfs.c | 42 +-----
> drivers/gpu/drm/i915/i915_drv.h | 1 -
> drivers/gpu/drm/i915/i915_pci.c | 2 -
> drivers/gpu/drm/i915/intel_drv.h | 2 -
> drivers/gpu/drm/i915/intel_frontbuffer.c | 2 -
> drivers/gpu/drm/i915/intel_psr.c | 248 +++----------------
> ------------
> 6 files changed, 27 insertions(+), 270 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_debugfs.c
> b/drivers/gpu/drm/i915/i915_debugfs.c
> index 13e7b9e4a6e6..0096e209fe04 100644
> --- a/drivers/gpu/drm/i915/i915_debugfs.c
> +++ b/drivers/gpu/drm/i915/i915_debugfs.c
> @@ -2630,8 +2630,6 @@ static int i915_edp_psr_status(struct seq_file
> *m, void *data)
> {
> struct drm_i915_private *dev_priv = node_to_i915(m-
> >private);
> u32 psrperf = 0;
> - u32 stat[3];
> - enum pipe pipe;
> bool enabled = false;
> bool sink_support;
>
> @@ -2652,47 +2650,17 @@ static int i915_edp_psr_status(struct
> seq_file *m, void *data)
> seq_printf(m, "Re-enable work scheduled: %s\n",
> yesno(work_busy(&dev_priv->psr.work.work)));
>
> - if (HAS_DDI(dev_priv)) {
> - if (dev_priv->psr.psr2_enabled)
> - enabled = I915_READ(EDP_PSR2_CTL) &
> EDP_PSR2_ENABLE;
> - else
> - enabled = I915_READ(EDP_PSR_CTL) &
> EDP_PSR_ENABLE;
> - } else {
> - for_each_pipe(dev_priv, pipe) {
> - enum transcoder cpu_transcoder =
> - intel_pipe_to_cpu_transcoder(dev_pri
> v, pipe);
> - enum intel_display_power_domain
> power_domain;
> -
> - power_domain =
> POWER_DOMAIN_TRANSCODER(cpu_transcoder);
> - if
> (!intel_display_power_get_if_enabled(dev_priv,
> - powe
> r_domain))
> - continue;
> -
> - stat[pipe] = I915_READ(VLV_PSRSTAT(pipe)) &
> - VLV_EDP_PSR_CURR_STATE_MASK;
> - if ((stat[pipe] ==
> VLV_EDP_PSR_ACTIVE_NORFB_UP) ||
> - (stat[pipe] ==
> VLV_EDP_PSR_ACTIVE_SF_UPDATE))
> - enabled = true;
> -
> - intel_display_power_put(dev_priv,
> power_domain);
> - }
> - }
> + if (dev_priv->psr.psr2_enabled)
> + enabled = I915_READ(EDP_PSR2_CTL) & EDP_PSR2_ENABLE;
> + else
> + enabled = I915_READ(EDP_PSR_CTL) & EDP_PSR_ENABLE;
>
> seq_printf(m, "Main link in standby mode: %s\n",
> yesno(dev_priv->psr.link_standby));
>
> - seq_printf(m, "HW Enabled & Active bit: %s",
> yesno(enabled));
> -
> - if (!HAS_DDI(dev_priv))
> - for_each_pipe(dev_priv, pipe) {
> - if ((stat[pipe] ==
> VLV_EDP_PSR_ACTIVE_NORFB_UP) ||
> - (stat[pipe] ==
> VLV_EDP_PSR_ACTIVE_SF_UPDATE))
> - seq_printf(m, " pipe %c",
> pipe_name(pipe));
> - }
> - seq_puts(m, "\n");
> + seq_printf(m, "HW Enabled & Active bit: %s\n",
> yesno(enabled));
>
> /*
> - * VLV/CHV PSR has no kind of performance counter
> * SKL+ Perf counter is reset to 0 everytime DC state is
> entered
> */
> if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) {
> diff --git a/drivers/gpu/drm/i915/i915_drv.h
> b/drivers/gpu/drm/i915/i915_drv.h
> index 57fb3aa09db0..7e2a400d33c3 100644
> --- a/drivers/gpu/drm/i915/i915_drv.h
> +++ b/drivers/gpu/drm/i915/i915_drv.h
> @@ -607,7 +607,6 @@ struct i915_psr {
> bool link_standby;
> bool colorimetry_support;
> bool alpm;
> - bool has_hw_tracking;
> bool psr2_enabled;
> u8 sink_sync_latency;
> bool debug;
> diff --git a/drivers/gpu/drm/i915/i915_pci.c
> b/drivers/gpu/drm/i915/i915_pci.c
> index 4364922e935d..97a91e6af7e3 100644
> --- a/drivers/gpu/drm/i915/i915_pci.c
> +++ b/drivers/gpu/drm/i915/i915_pci.c
> @@ -340,7 +340,6 @@ static const struct intel_device_info
> intel_valleyview_info = {
> GEN(7),
> .is_lp = 1,
> .num_pipes = 2,
> - .has_psr = 1,
> .has_runtime_pm = 1,
> .has_rc6 = 1,
> .has_gmch_display = 1,
> @@ -433,7 +432,6 @@ static const struct intel_device_info
> intel_cherryview_info = {
> .is_lp = 1,
> .ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING,
> .has_64bit_reloc = 1,
> - .has_psr = 1,
> .has_runtime_pm = 1,
> .has_resource_streamer = 1,
> .has_rc6 = 1,
> diff --git a/drivers/gpu/drm/i915/intel_drv.h
> b/drivers/gpu/drm/i915/intel_drv.h
> index d7dbca1aabff..a2b4018803ab 100644
> --- a/drivers/gpu/drm/i915/intel_drv.h
> +++ b/drivers/gpu/drm/i915/intel_drv.h
> @@ -1913,8 +1913,6 @@ void intel_psr_flush(struct drm_i915_private
> *dev_priv,
> unsigned frontbuffer_bits,
> enum fb_op_origin origin);
> void intel_psr_init(struct drm_i915_private *dev_priv);
> -void intel_psr_single_frame_update(struct drm_i915_private
> *dev_priv,
> - unsigned frontbuffer_bits);
> void intel_psr_compute_config(struct intel_dp *intel_dp,
> struct intel_crtc_state *crtc_state);
> void intel_psr_irq_control(struct drm_i915_private *dev_priv, bool
> debug);
> diff --git a/drivers/gpu/drm/i915/intel_frontbuffer.c
> b/drivers/gpu/drm/i915/intel_frontbuffer.c
> index 7fff0a0eceb4..c3379bde266f 100644
> --- a/drivers/gpu/drm/i915/intel_frontbuffer.c
> +++ b/drivers/gpu/drm/i915/intel_frontbuffer.c
> @@ -153,8 +153,6 @@ void intel_frontbuffer_flip_prepare(struct
> drm_i915_private *dev_priv,
> /* Remove stale busy bits due to the old buffer. */
> dev_priv->fb_tracking.busy_bits &= ~frontbuffer_bits;
> spin_unlock(&dev_priv->fb_tracking.lock);
> -
> - intel_psr_single_frame_update(dev_priv, frontbuffer_bits);
> }
>
> /**
> diff --git a/drivers/gpu/drm/i915/intel_psr.c
> b/drivers/gpu/drm/i915/intel_psr.c
> index db27f2faa1de..29443d2c35bb 100644
> --- a/drivers/gpu/drm/i915/intel_psr.c
> +++ b/drivers/gpu/drm/i915/intel_psr.c
> @@ -97,10 +97,6 @@ void intel_psr_irq_control(struct drm_i915_private
> *dev_priv, bool debug)
> {
> u32 debug_mask, mask;
>
> - /* No PSR interrupts on VLV/CHV */
> - if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
> - return;
> -
> mask = EDP_PSR_ERROR(TRANSCODER_EDP);
> debug_mask = EDP_PSR_POST_EXIT(TRANSCODER_EDP) |
> EDP_PSR_PRE_ENTRY(TRANSCODER_EDP);
> @@ -284,31 +280,6 @@ void intel_psr_init_dpcd(struct intel_dp
> *intel_dp)
> }
> }
>
> -static bool vlv_is_psr_active_on_pipe(struct drm_device *dev, int
> pipe)
> -{
> - struct drm_i915_private *dev_priv = to_i915(dev);
> - uint32_t val;
> -
> - val = I915_READ(VLV_PSRSTAT(pipe)) &
> - VLV_EDP_PSR_CURR_STATE_MASK;
> - return (val == VLV_EDP_PSR_ACTIVE_NORFB_UP) ||
> - (val == VLV_EDP_PSR_ACTIVE_SF_UPDATE);
> -}
> -
> -static void vlv_psr_setup_vsc(struct intel_dp *intel_dp,
> - const struct intel_crtc_state
> *crtc_state)
> -{
> - struct intel_crtc *crtc = to_intel_crtc(crtc_state-
> >base.crtc);
> - struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
> - uint32_t val;
> -
> - /* VLV auto-generate VSC package as per EDP 1.3 spec, Table
> 3.10 */
> - val = I915_READ(VLV_VSCSDP(crtc->pipe));
> - val &= ~VLV_EDP_PSR_SDP_FREQ_MASK;
> - val |= VLV_EDP_PSR_SDP_FREQ_EVFRAME;
> - I915_WRITE(VLV_VSCSDP(crtc->pipe), val);
> -}
> -
> static void hsw_psr_setup_vsc(struct intel_dp *intel_dp,
> const struct intel_crtc_state
> *crtc_state)
> {
> @@ -341,12 +312,6 @@ static void hsw_psr_setup_vsc(struct intel_dp
> *intel_dp,
> DP_SDP_VSC, &psr_vsc,
> sizeof(psr_vsc));
> }
>
> -static void vlv_psr_enable_sink(struct intel_dp *intel_dp)
> -{
> - drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_EN_CFG,
> - DP_PSR_ENABLE | DP_PSR_MAIN_LINK_ACTIVE);
> -}
> -
> static void hsw_psr_setup_aux(struct intel_dp *intel_dp)
> {
> struct intel_digital_port *dig_port =
> dp_to_dig_port(intel_dp);
> @@ -403,38 +368,6 @@ static void hsw_psr_enable_sink(struct intel_dp
> *intel_dp)
> drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER,
> DP_SET_POWER_D0);
> }
>
> -static void vlv_psr_enable_source(struct intel_dp *intel_dp,
> - const struct intel_crtc_state
> *crtc_state)
> -{
> - struct intel_digital_port *dig_port =
> dp_to_dig_port(intel_dp);
> - struct drm_i915_private *dev_priv = to_i915(dig_port-
> >base.base.dev);
> - struct intel_crtc *crtc = to_intel_crtc(crtc_state-
> >base.crtc);
> -
> - /* Transition from PSR_state 0 (disabled) to PSR_state 1
> (inactive) */
> - I915_WRITE(VLV_PSRCTL(crtc->pipe),
> - VLV_EDP_PSR_MODE_SW_TIMER |
> - VLV_EDP_PSR_SRC_TRANSMITTER_STATE |
> - VLV_EDP_PSR_ENABLE);
> -}
> -
> -static void vlv_psr_activate(struct intel_dp *intel_dp)
> -{
> - struct intel_digital_port *dig_port =
> dp_to_dig_port(intel_dp);
> - struct drm_device *dev = dig_port->base.base.dev;
> - struct drm_i915_private *dev_priv = to_i915(dev);
> - struct drm_crtc *crtc = dig_port->base.base.crtc;
> - enum pipe pipe = to_intel_crtc(crtc)->pipe;
> -
> - /*
> - * Let's do the transition from PSR_state 1 (inactive) to
> - * PSR_state 2 (transition to active - static frame
> transmission).
> - * Then Hardware is responsible for the transition to
> - * PSR_state 3 (active - no Remote Frame Buffer (RFB)
> update).
> - */
> - I915_WRITE(VLV_PSRCTL(pipe), I915_READ(VLV_PSRCTL(pipe)) |
> - VLV_EDP_PSR_ACTIVE_ENTRY);
> -}
> -
> static void hsw_activate_psr1(struct intel_dp *intel_dp)
> {
> struct intel_digital_port *dig_port =
> dp_to_dig_port(intel_dp);
> @@ -602,17 +535,11 @@ void intel_psr_compute_config(struct intel_dp
> *intel_dp,
> * ones. Since by Display design transcoder EDP is tied to
> port A
> * we can safely escape based on the port A.
> */
> - if (HAS_DDI(dev_priv) && dig_port->base.port != PORT_A) {
> + if (dig_port->base.port != PORT_A) {
> DRM_DEBUG_KMS("PSR condition failed: Port not
> supported\n");
> return;
> }
>
> - if ((IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) &&
> - !dev_priv->psr.link_standby) {
> - DRM_ERROR("PSR condition failed: Link off requested
> but not supported on this platform\n");
> - return;
> - }
> -
> if (IS_HASWELL(dev_priv) &&
> I915_READ(HSW_STEREO_3D_CTL(crtc_state->cpu_transcoder))
> &
> S3D_ENABLE) {
> @@ -760,7 +687,6 @@ void intel_psr_enable(struct intel_dp *intel_dp,
> * enabled.
> * However on some platforms we face issues when
> first
> * activation follows a modeset so quickly.
> - * - On VLV/CHV we get bank screen on first
> activation
> * - On HSW/BDW we get a recoverable frozen
> screen until
> * next exit-activate sequence.
> */
> @@ -772,36 +698,6 @@ void intel_psr_enable(struct intel_dp *intel_dp,
> mutex_unlock(&dev_priv->psr.lock);
> }
>
> -static void vlv_psr_disable(struct intel_dp *intel_dp,
> - const struct intel_crtc_state
> *old_crtc_state)
> -{
> - struct intel_digital_port *intel_dig_port =
> dp_to_dig_port(intel_dp);
> - struct drm_device *dev = intel_dig_port->base.base.dev;
> - struct drm_i915_private *dev_priv = to_i915(dev);
> - struct intel_crtc *crtc = to_intel_crtc(old_crtc_state-
> >base.crtc);
> - uint32_t val;
> -
> - if (dev_priv->psr.active) {
> - /* Put VLV PSR back to PSR_state 0 (disabled). */
> - if (intel_wait_for_register(dev_priv,
> - VLV_PSRSTAT(crtc->pipe),
> - VLV_EDP_PSR_IN_TRANS,
> - 0,
> - 1))
> - WARN(1, "PSR transition took longer than
> expected\n");
> -
> - val = I915_READ(VLV_PSRCTL(crtc->pipe));
> - val &= ~VLV_EDP_PSR_ACTIVE_ENTRY;
> - val &= ~VLV_EDP_PSR_ENABLE;
> - val &= ~VLV_EDP_PSR_MODE_MASK;
> - I915_WRITE(VLV_PSRCTL(crtc->pipe), val);
> -
> - dev_priv->psr.active = false;
> - } else {
> - WARN_ON(vlv_is_psr_active_on_pipe(dev, crtc->pipe));
> - }
> -}
> -
> static void hsw_psr_disable(struct intel_dp *intel_dp,
> const struct intel_crtc_state
> *old_crtc_state)
> {
> @@ -894,21 +790,12 @@ static bool psr_wait_for_idle(struct
> drm_i915_private *dev_priv)
> if (!intel_dp)
> return false;
>
> - if (HAS_DDI(dev_priv)) {
> - if (dev_priv->psr.psr2_enabled) {
> - reg = EDP_PSR2_STATUS;
> - mask = EDP_PSR2_STATUS_STATE_MASK;
> - } else {
> - reg = EDP_PSR_STATUS;
> - mask = EDP_PSR_STATUS_STATE_MASK;
> - }
> + if (dev_priv->psr.psr2_enabled) {
> + reg = EDP_PSR2_STATUS;
> + mask = EDP_PSR2_STATUS_STATE_MASK;
> } else {
> - struct drm_crtc *crtc =
> - dp_to_dig_port(intel_dp)->base.base.crtc;
> - enum pipe pipe = to_intel_crtc(crtc)->pipe;
> -
> - reg = VLV_PSRSTAT(pipe);
> - mask = VLV_EDP_PSR_IN_TRANS;
> + reg = EDP_PSR_STATUS;
> + mask = EDP_PSR_STATUS_STATE_MASK;
> }
>
> mutex_unlock(&dev_priv->psr.lock);
> @@ -953,102 +840,23 @@ static void intel_psr_work(struct work_struct
> *work)
>
> static void intel_psr_exit(struct drm_i915_private *dev_priv)
> {
> - struct intel_dp *intel_dp = dev_priv->psr.enabled;
> - struct drm_crtc *crtc = dp_to_dig_port(intel_dp)-
> >base.base.crtc;
> - enum pipe pipe = to_intel_crtc(crtc)->pipe;
> u32 val;
>
> if (!dev_priv->psr.active)
> return;
>
> - if (HAS_DDI(dev_priv)) {
> - if (dev_priv->psr.psr2_enabled) {
> - val = I915_READ(EDP_PSR2_CTL);
> - WARN_ON(!(val & EDP_PSR2_ENABLE));
> - I915_WRITE(EDP_PSR2_CTL, val &
> ~EDP_PSR2_ENABLE);
> - } else {
> - val = I915_READ(EDP_PSR_CTL);
> - WARN_ON(!(val & EDP_PSR_ENABLE));
> - I915_WRITE(EDP_PSR_CTL, val &
> ~EDP_PSR_ENABLE);
> - }
> + if (dev_priv->psr.psr2_enabled) {
> + val = I915_READ(EDP_PSR2_CTL);
> + WARN_ON(!(val & EDP_PSR2_ENABLE));
> + I915_WRITE(EDP_PSR2_CTL, val & ~EDP_PSR2_ENABLE);
> } else {
> - val = I915_READ(VLV_PSRCTL(pipe));
> -
> - /*
> - * Here we do the transition drirectly from
> - * PSR_state 3 (active - no Remote Frame Buffer
> (RFB) update) to
> - * PSR_state 5 (exit).
> - * PSR State 4 (active with single frame update) can
> be skipped.
> - * On PSR_state 5 (exit) Hardware is responsible to
> transition
> - * back to PSR_state 1 (inactive).
> - * Now we are at Same state after
> vlv_psr_enable_source.
> - */
> - val &= ~VLV_EDP_PSR_ACTIVE_ENTRY;
> - I915_WRITE(VLV_PSRCTL(pipe), val);
> -
> - /*
> - * Send AUX wake up - Spec says after transitioning
> to PSR
> - * active we have to send AUX wake up by writing 01h
> in DPCD
> - * 600h of sink device.
> - * XXX: This might slow down the transition, but
> without this
> - * HW doesn't complete the transition to PSR_state 1
> and we
> - * never get the screen updated.
> - */
> - drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER,
> - DP_SET_POWER_D0);
> + val = I915_READ(EDP_PSR_CTL);
> + WARN_ON(!(val & EDP_PSR_ENABLE));
> + I915_WRITE(EDP_PSR_CTL, val & ~EDP_PSR_ENABLE);
> }
> -
> dev_priv->psr.active = false;
> }
>
> -/**
> - * intel_psr_single_frame_update - Single Frame Update
> - * @dev_priv: i915 device
> - * @frontbuffer_bits: frontbuffer plane tracking bits
> - *
> - * Some platforms support a single frame update feature that is used
> to
> - * send and update only one frame on Remote Frame Buffer.
> - * So far it is only implemented for Valleyview and Cherryview
> because
> - * hardware requires this to be done before a page flip.
> - */
> -void intel_psr_single_frame_update(struct drm_i915_private
> *dev_priv,
> - unsigned frontbuffer_bits)
> -{
> - struct drm_crtc *crtc;
> - enum pipe pipe;
> - u32 val;
> -
> - if (!CAN_PSR(dev_priv))
> - return;
> -
> - /*
> - * Single frame update is already supported on BDW+ but it
> requires
> - * many W/A and it isn't really needed.
> - */
> - if (!IS_VALLEYVIEW(dev_priv) && !IS_CHERRYVIEW(dev_priv))
> - return;
> -
> - mutex_lock(&dev_priv->psr.lock);
> - if (!dev_priv->psr.enabled) {
> - mutex_unlock(&dev_priv->psr.lock);
> - return;
> - }
> -
> - crtc = dp_to_dig_port(dev_priv->psr.enabled)-
> >base.base.crtc;
> - pipe = to_intel_crtc(crtc)->pipe;
> -
> - if (frontbuffer_bits & INTEL_FRONTBUFFER_ALL_MASK(pipe)) {
> - val = I915_READ(VLV_PSRCTL(pipe));
> -
> - /*
> - * We need to set this bit before writing registers
> for a flip.
> - * This bit will be self-clear when it gets to the
> PSR active state.
> - */
> - I915_WRITE(VLV_PSRCTL(pipe), val |
> VLV_EDP_PSR_SINGLE_FRAME_UPDATE);
> - }
> - mutex_unlock(&dev_priv->psr.lock);
> -}
> -
> /**
> * intel_psr_invalidate - Invalidade PSR
> * @dev_priv: i915 device
> @@ -1071,7 +879,7 @@ void intel_psr_invalidate(struct
> drm_i915_private *dev_priv,
> if (!CAN_PSR(dev_priv))
> return;
>
> - if (dev_priv->psr.has_hw_tracking && origin == ORIGIN_FLIP)
> + if (origin == ORIGIN_FLIP)
> return;
>
> mutex_lock(&dev_priv->psr.lock);
> @@ -1114,7 +922,7 @@ void intel_psr_flush(struct drm_i915_private
> *dev_priv,
> if (!CAN_PSR(dev_priv))
> return;
>
> - if (dev_priv->psr.has_hw_tracking && origin == ORIGIN_FLIP)
> + if (origin == ORIGIN_FLIP)
> return;
>
> mutex_lock(&dev_priv->psr.lock);
> @@ -1131,8 +939,7 @@ void intel_psr_flush(struct drm_i915_private
> *dev_priv,
>
> /* By definition flush = invalidate + flush */
> if (frontbuffer_bits) {
> - if (dev_priv->psr.psr2_enabled ||
> - IS_VALLEYVIEW(dev_priv) ||
> IS_CHERRYVIEW(dev_priv)) {
> + if (dev_priv->psr.psr2_enabled) {
> intel_psr_exit(dev_priv);
> } else {
> /*
> @@ -1184,9 +991,6 @@ void intel_psr_init(struct drm_i915_private
> *dev_priv)
> if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
> /* HSW and BDW require workarounds that we don't
> implement. */
> dev_priv->psr.link_standby = false;
> - else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
> - /* On VLV and CHV only standby mode is supported. */
> - dev_priv->psr.link_standby = true;
> else
> /* For new platforms let's respect VBT back again */
> dev_priv->psr.link_standby = dev_priv-
> >vbt.psr.full_link;
> @@ -1204,18 +1008,10 @@ void intel_psr_init(struct drm_i915_private
> *dev_priv)
> INIT_DELAYED_WORK(&dev_priv->psr.work, intel_psr_work);
> mutex_init(&dev_priv->psr.lock);
>
> - if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
> - dev_priv->psr.enable_source = vlv_psr_enable_source;
> - dev_priv->psr.disable_source = vlv_psr_disable;
> - dev_priv->psr.enable_sink = vlv_psr_enable_sink;
> - dev_priv->psr.activate = vlv_psr_activate;
> - dev_priv->psr.setup_vsc = vlv_psr_setup_vsc;
> - } else {
> - dev_priv->psr.has_hw_tracking = true;
> - dev_priv->psr.enable_source = hsw_psr_enable_source;
> - dev_priv->psr.disable_source = hsw_psr_disable;
> - dev_priv->psr.enable_sink = hsw_psr_enable_sink;
> - dev_priv->psr.activate = hsw_psr_activate;
> - dev_priv->psr.setup_vsc = hsw_psr_setup_vsc;
> - }
> + dev_priv->psr.enable_source = hsw_psr_enable_source;
> + dev_priv->psr.disable_source = hsw_psr_disable;
> + dev_priv->psr.enable_sink = hsw_psr_enable_sink;
> + dev_priv->psr.activate = hsw_psr_activate;
> + dev_priv->psr.setup_vsc = hsw_psr_setup_vsc;
In a further patch we should also kill this
> +
> }
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