Move the generic sanitize_watermarks() to intel_wm.[ch] and rename as intel_wm_sanitize(). The slightly unfortunate downside is having to expose intel_atomic_check() from intel_display.c, but this declutters intel_display.c nicely.
Cc: Ville Syrjälä <ville.syrj...@linux.intel.com> Signed-off-by: Jani Nikula <jani.nik...@intel.com> --- drivers/gpu/drm/i915/display/intel_display.c | 124 +------------------ drivers/gpu/drm/i915/display/intel_display.h | 2 + drivers/gpu/drm/i915/display/intel_wm.c | 119 ++++++++++++++++++ drivers/gpu/drm/i915/display/intel_wm.h | 1 + 4 files changed, 125 insertions(+), 121 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index 82efd96ace87..abb40112704b 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -6602,8 +6602,8 @@ static int intel_bigjoiner_add_affected_crtcs(struct intel_atomic_state *state) * @dev: drm device * @_state: state to validate */ -static int intel_atomic_check(struct drm_device *dev, - struct drm_atomic_state *_state) +int intel_atomic_check(struct drm_device *dev, + struct drm_atomic_state *_state) { struct drm_i915_private *dev_priv = to_i915(dev); struct intel_atomic_state *state = to_intel_atomic_state(_state); @@ -8263,124 +8263,6 @@ void intel_modeset_init_hw(struct drm_i915_private *i915) cdclk_state->logical = cdclk_state->actual = i915->display.cdclk.hw; } -static int sanitize_watermarks_add_affected(struct drm_atomic_state *state) -{ - struct drm_plane *plane; - struct intel_crtc *crtc; - - for_each_intel_crtc(state->dev, crtc) { - struct intel_crtc_state *crtc_state; - - crtc_state = intel_atomic_get_crtc_state(state, crtc); - if (IS_ERR(crtc_state)) - return PTR_ERR(crtc_state); - - if (crtc_state->hw.active) { - /* - * Preserve the inherited flag to avoid - * taking the full modeset path. - */ - crtc_state->inherited = true; - } - } - - drm_for_each_plane(plane, state->dev) { - struct drm_plane_state *plane_state; - - plane_state = drm_atomic_get_plane_state(state, plane); - if (IS_ERR(plane_state)) - return PTR_ERR(plane_state); - } - - return 0; -} - -/* - * Calculate what we think the watermarks should be for the state we've read - * out of the hardware and then immediately program those watermarks so that - * we ensure the hardware settings match our internal state. - * - * We can calculate what we think WM's should be by creating a duplicate of the - * current state (which was constructed during hardware readout) and running it - * through the atomic check code to calculate new watermark values in the - * state object. - */ -static void sanitize_watermarks(struct drm_i915_private *dev_priv) -{ - struct drm_atomic_state *state; - struct intel_atomic_state *intel_state; - struct intel_crtc *crtc; - struct intel_crtc_state *crtc_state; - struct drm_modeset_acquire_ctx ctx; - int ret; - int i; - - /* Only supported on platforms that use atomic watermark design */ - if (!dev_priv->display.funcs.wm->optimize_watermarks) - return; - - state = drm_atomic_state_alloc(&dev_priv->drm); - if (drm_WARN_ON(&dev_priv->drm, !state)) - return; - - intel_state = to_intel_atomic_state(state); - - drm_modeset_acquire_init(&ctx, 0); - -retry: - state->acquire_ctx = &ctx; - - /* - * Hardware readout is the only time we don't want to calculate - * intermediate watermarks (since we don't trust the current - * watermarks). - */ - if (!HAS_GMCH(dev_priv)) - intel_state->skip_intermediate_wm = true; - - ret = sanitize_watermarks_add_affected(state); - if (ret) - goto fail; - - ret = intel_atomic_check(&dev_priv->drm, state); - if (ret) - goto fail; - - /* Write calculated watermark values back */ - for_each_new_intel_crtc_in_state(intel_state, crtc, crtc_state, i) { - crtc_state->wm.need_postvbl_update = true; - intel_optimize_watermarks(intel_state, crtc); - - to_intel_crtc_state(crtc->base.state)->wm = crtc_state->wm; - } - -fail: - if (ret == -EDEADLK) { - drm_atomic_state_clear(state); - drm_modeset_backoff(&ctx); - goto retry; - } - - /* - * If we fail here, it means that the hardware appears to be - * programmed in a way that shouldn't be possible, given our - * understanding of watermark requirements. This might mean a - * mistake in the hardware readout code or a mistake in the - * watermark calculations for a given platform. Raise a WARN - * so that this is noticeable. - * - * If this actually happens, we'll have to just leave the - * BIOS-programmed watermarks untouched and hope for the best. - */ - drm_WARN(&dev_priv->drm, ret, - "Could not determine valid watermarks for inherited state\n"); - - drm_atomic_state_put(state); - - drm_modeset_drop_locks(&ctx); - drm_modeset_acquire_fini(&ctx); -} - static int intel_initial_commit(struct drm_device *dev) { struct drm_atomic_state *state = NULL; @@ -8657,7 +8539,7 @@ int intel_modeset_init_nogem(struct drm_i915_private *i915) * since the watermark calculation done here will use pstate->fb. */ if (!HAS_GMCH(i915)) - sanitize_watermarks(i915); + intel_wm_sanitize(i915); return 0; } diff --git a/drivers/gpu/drm/i915/display/intel_display.h b/drivers/gpu/drm/i915/display/intel_display.h index cb6f520cc575..ed852f62721d 100644 --- a/drivers/gpu/drm/i915/display/intel_display.h +++ b/drivers/gpu/drm/i915/display/intel_display.h @@ -32,6 +32,7 @@ enum drm_scaling_filter; struct dpll; +struct drm_atomic_state; struct drm_connector; struct drm_device; struct drm_display_mode; @@ -394,6 +395,7 @@ enum phy_fia { ((connector) = to_intel_connector((__state)->base.connectors[__i].ptr), \ (new_connector_state) = to_intel_digital_connector_state((__state)->base.connectors[__i].new_state), 1)) +int intel_atomic_check(struct drm_device *dev, struct drm_atomic_state *state); int intel_atomic_add_affected_planes(struct intel_atomic_state *state, struct intel_crtc *crtc); u8 intel_calc_active_pipes(struct intel_atomic_state *state, diff --git a/drivers/gpu/drm/i915/display/intel_wm.c b/drivers/gpu/drm/i915/display/intel_wm.c index c4d14a51869b..15fda0829c2f 100644 --- a/drivers/gpu/drm/i915/display/intel_wm.c +++ b/drivers/gpu/drm/i915/display/intel_wm.c @@ -5,6 +5,7 @@ #include "i915_drv.h" #include "i9xx_wm.h" +#include "intel_atomic.h" #include "intel_display_types.h" #include "intel_wm.h" #include "skl_watermark.h" @@ -173,6 +174,124 @@ void intel_print_wm_latency(struct drm_i915_private *dev_priv, } } +static int sanitize_watermarks_add_affected(struct drm_atomic_state *state) +{ + struct drm_plane *plane; + struct intel_crtc *crtc; + + for_each_intel_crtc(state->dev, crtc) { + struct intel_crtc_state *crtc_state; + + crtc_state = intel_atomic_get_crtc_state(state, crtc); + if (IS_ERR(crtc_state)) + return PTR_ERR(crtc_state); + + if (crtc_state->hw.active) { + /* + * Preserve the inherited flag to avoid + * taking the full modeset path. + */ + crtc_state->inherited = true; + } + } + + drm_for_each_plane(plane, state->dev) { + struct drm_plane_state *plane_state; + + plane_state = drm_atomic_get_plane_state(state, plane); + if (IS_ERR(plane_state)) + return PTR_ERR(plane_state); + } + + return 0; +} + +/* + * Calculate what we think the watermarks should be for the state we've read + * out of the hardware and then immediately program those watermarks so that + * we ensure the hardware settings match our internal state. + * + * We can calculate what we think WM's should be by creating a duplicate of the + * current state (which was constructed during hardware readout) and running it + * through the atomic check code to calculate new watermark values in the + * state object. + */ +void intel_wm_sanitize(struct drm_i915_private *dev_priv) +{ + struct drm_atomic_state *state; + struct intel_atomic_state *intel_state; + struct intel_crtc *crtc; + struct intel_crtc_state *crtc_state; + struct drm_modeset_acquire_ctx ctx; + int ret; + int i; + + /* Only supported on platforms that use atomic watermark design */ + if (!dev_priv->display.funcs.wm->optimize_watermarks) + return; + + state = drm_atomic_state_alloc(&dev_priv->drm); + if (drm_WARN_ON(&dev_priv->drm, !state)) + return; + + intel_state = to_intel_atomic_state(state); + + drm_modeset_acquire_init(&ctx, 0); + +retry: + state->acquire_ctx = &ctx; + + /* + * Hardware readout is the only time we don't want to calculate + * intermediate watermarks (since we don't trust the current + * watermarks). + */ + if (!HAS_GMCH(dev_priv)) + intel_state->skip_intermediate_wm = true; + + ret = sanitize_watermarks_add_affected(state); + if (ret) + goto fail; + + ret = intel_atomic_check(&dev_priv->drm, state); + if (ret) + goto fail; + + /* Write calculated watermark values back */ + for_each_new_intel_crtc_in_state(intel_state, crtc, crtc_state, i) { + crtc_state->wm.need_postvbl_update = true; + intel_optimize_watermarks(intel_state, crtc); + + to_intel_crtc_state(crtc->base.state)->wm = crtc_state->wm; + } + +fail: + if (ret == -EDEADLK) { + drm_atomic_state_clear(state); + drm_modeset_backoff(&ctx); + goto retry; + } + + /* + * If we fail here, it means that the hardware appears to be + * programmed in a way that shouldn't be possible, given our + * understanding of watermark requirements. This might mean a + * mistake in the hardware readout code or a mistake in the + * watermark calculations for a given platform. Raise a WARN + * so that this is noticeable. + * + * If this actually happens, we'll have to just leave the + * BIOS-programmed watermarks untouched and hope for the best. + */ + drm_WARN(&dev_priv->drm, ret, + "Could not determine valid watermarks for inherited state\n"); + + drm_atomic_state_put(state); + + drm_modeset_drop_locks(&ctx); + drm_modeset_acquire_fini(&ctx); +} + void intel_wm_init(struct drm_i915_private *i915) { if (DISPLAY_VER(i915) >= 9) diff --git a/drivers/gpu/drm/i915/display/intel_wm.h b/drivers/gpu/drm/i915/display/intel_wm.h index dc582967a25e..a5233e7e5e8d 100644 --- a/drivers/gpu/drm/i915/display/intel_wm.h +++ b/drivers/gpu/drm/i915/display/intel_wm.h @@ -31,6 +31,7 @@ bool intel_wm_plane_visible(const struct intel_crtc_state *crtc_state, const struct intel_plane_state *plane_state); void intel_print_wm_latency(struct drm_i915_private *i915, const char *name, const u16 wm[]); +void intel_wm_sanitize(struct drm_i915_private *i915); void intel_wm_init(struct drm_i915_private *i915); #endif /* __INTEL_WM_H__ */ -- 2.34.1