From: Ville Syrjälä <ville.syrj...@linux.intel.com>

Make things a bit more abstract by replacing the pch_pfit.pos/size
raw register values with a drm_rect. Makes it slighly more convenient
to eg. compute the scaling factors.

v2: Use drm_rect_init()

Signed-off-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
---
 drivers/gpu/drm/i915/display/intel_display.c  | 79 ++++++++++++-------
 .../drm/i915/display/intel_display_types.h    |  3 +-
 drivers/gpu/drm/i915/display/intel_panel.c    | 13 ++-
 drivers/gpu/drm/i915/intel_pm.c               |  5 +-
 4 files changed, 60 insertions(+), 40 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display.c 
b/drivers/gpu/drm/i915/display/intel_display.c
index 6aeec01e2d24..38df154123d2 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -5521,10 +5521,8 @@ static int skl_update_scaler_crtc(struct 
intel_crtc_state *crtc_state)
        int width, height;
 
        if (crtc_state->pch_pfit.enabled) {
-               u32 pfit_size = crtc_state->pch_pfit.size;
-
-               width = pfit_size >> 16;
-               height = pfit_size & 0xffff;
+               width = drm_rect_width(&crtc_state->pch_pfit.dst);
+               height = drm_rect_height(&crtc_state->pch_pfit.dst);
        } else {
                width = adjusted_mode->crtc_hdisplay;
                height = adjusted_mode->crtc_vdisplay;
@@ -5633,11 +5631,20 @@ static void skylake_pfit_enable(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);
-       enum pipe pipe = crtc->pipe;
        const struct intel_crtc_scaler_state *scaler_state =
                &crtc_state->scaler_state;
+       struct drm_rect src = {
+               .x2 = crtc_state->pipe_src_w << 16,
+               .y2 = crtc_state->pipe_src_h << 16,
+       };
+       const struct drm_rect *dst = &crtc_state->pch_pfit.dst;
        u16 uv_rgb_hphase, uv_rgb_vphase;
-       int pfit_w, pfit_h, hscale, vscale;
+       enum pipe pipe = crtc->pipe;
+       int width = drm_rect_width(dst);
+       int height = drm_rect_height(dst);
+       int x = dst->x1;
+       int y = dst->y1;
+       int hscale, vscale;
        int id;
 
        if (!crtc_state->pch_pfit.enabled)
@@ -5646,11 +5653,8 @@ static void skylake_pfit_enable(const struct 
intel_crtc_state *crtc_state)
        if (WARN_ON(crtc_state->scaler_state.scaler_id < 0))
                return;
 
-       pfit_w = (crtc_state->pch_pfit.size >> 16) & 0xFFFF;
-       pfit_h = crtc_state->pch_pfit.size & 0xFFFF;
-
-       hscale = (crtc_state->pipe_src_w << 16) / pfit_w;
-       vscale = (crtc_state->pipe_src_h << 16) / pfit_h;
+       hscale = drm_rect_calc_hscale(&src, dst, 0, INT_MAX);
+       vscale = drm_rect_calc_vscale(&src, dst, 0, INT_MAX);
 
        uv_rgb_hphase = skl_scaler_calc_phase(1, hscale, false);
        uv_rgb_vphase = skl_scaler_calc_phase(1, vscale, false);
@@ -5662,15 +5666,20 @@ static void skylake_pfit_enable(const struct 
intel_crtc_state *crtc_state)
                   PS_Y_PHASE(0) | PS_UV_RGB_PHASE(uv_rgb_vphase));
        I915_WRITE(SKL_PS_HPHASE(pipe, id),
                   PS_Y_PHASE(0) | PS_UV_RGB_PHASE(uv_rgb_hphase));
-       I915_WRITE(SKL_PS_WIN_POS(pipe, id), crtc_state->pch_pfit.pos);
-       I915_WRITE(SKL_PS_WIN_SZ(pipe, id), crtc_state->pch_pfit.size);
+       I915_WRITE(SKL_PS_WIN_POS(pipe, id), x << 16 | y);
+       I915_WRITE(SKL_PS_WIN_SZ(pipe, id), width << 16 | height);
 }
 
 static void ironlake_pfit_enable(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);
+       const struct drm_rect *dst = &crtc_state->pch_pfit.dst;
        enum pipe pipe = crtc->pipe;
+       int width = drm_rect_width(dst);
+       int height = drm_rect_height(dst);
+       int x = dst->x1;
+       int y = dst->y1;
 
        if (!crtc_state->pch_pfit.enabled)
                return;
@@ -5684,8 +5693,8 @@ static void ironlake_pfit_enable(const struct 
intel_crtc_state *crtc_state)
                           PF_PIPE_SEL_IVB(pipe));
        else
                I915_WRITE(PF_CTL(pipe), PF_ENABLE | PF_FILTER_MED_3x3);
-       I915_WRITE(PF_WIN_POS(pipe), crtc_state->pch_pfit.pos);
-       I915_WRITE(PF_WIN_SZ(pipe), crtc_state->pch_pfit.size);
+       I915_WRITE(PF_WIN_POS(pipe), x << 16 | y);
+       I915_WRITE(PF_WIN_SZ(pipe), width << 16 | height);
 }
 
 void hsw_enable_ips(const struct intel_crtc_state *crtc_state)
@@ -7400,8 +7409,7 @@ static bool intel_crtc_supports_double_wide(const struct 
intel_crtc *crtc)
 static u32 ilk_pipe_pixel_rate(const struct intel_crtc_state *crtc_state)
 {
        u32 pixel_rate = crtc_state->base.adjusted_mode.crtc_clock;
-       u32 pfit_size = crtc_state->pch_pfit.size;
-       u64 pipe_w, pipe_h, pfit_w, pfit_h;
+       unsigned int pipe_w, pipe_h, pfit_w, pfit_h;
 
        /*
         * We only use IF-ID interlacing. If we ever use
@@ -7414,8 +7422,9 @@ static u32 ilk_pipe_pixel_rate(const struct 
intel_crtc_state *crtc_state)
        pipe_w = crtc_state->pipe_src_w;
        pipe_h = crtc_state->pipe_src_h;
 
-       pfit_w = (pfit_size >> 16) & 0xFFFF;
-       pfit_h = pfit_size & 0xFFFF;
+       pfit_w = drm_rect_width(&crtc_state->pch_pfit.dst);
+       pfit_h = drm_rect_height(&crtc_state->pch_pfit.dst);
+
        if (pipe_w < pfit_w)
                pipe_w = pfit_w;
        if (pipe_h < pfit_h)
@@ -9809,6 +9818,14 @@ static void ironlake_get_fdi_m_n_config(struct 
intel_crtc *crtc,
                                     &pipe_config->fdi_m_n, NULL);
 }
 
+static void ilk_get_pfit_pos_size(struct intel_crtc_state *crtc_state,
+                                 u32 pos, u32 size)
+{
+       drm_rect_init(&crtc_state->pch_pfit.dst,
+                     pos >> 16, pos & 0xffff,
+                     size >> 16, size & 0xffff);
+}
+
 static void skylake_get_pfit_config(struct intel_crtc_state *crtc_state)
 {
        struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
@@ -9827,8 +9844,11 @@ static void skylake_get_pfit_config(struct 
intel_crtc_state *crtc_state)
 
                id = i;
                crtc_state->pch_pfit.enabled = true;
-               crtc_state->pch_pfit.pos = I915_READ(SKL_PS_WIN_POS(crtc->pipe, 
i));
-               crtc_state->pch_pfit.size = I915_READ(SKL_PS_WIN_SZ(crtc->pipe, 
i));
+
+               ilk_get_pfit_pos_size(crtc_state,
+                                     I915_READ(SKL_PS_WIN_POS(crtc->pipe, i)),
+                                     I915_READ(SKL_PS_WIN_SZ(crtc->pipe, i)));
+
                scaler_state->scalers[i].in_use = true;
                break;
        }
@@ -9986,8 +10006,10 @@ static void ironlake_get_pfit_config(struct 
intel_crtc_state *crtc_state)
                (tmp & PF_PIPE_SEL_MASK_IVB) != PF_PIPE_SEL_IVB(crtc->pipe));
 
        crtc_state->pch_pfit.enabled = true;
-       crtc_state->pch_pfit.pos = I915_READ(PF_WIN_POS(crtc->pipe));
-       crtc_state->pch_pfit.size = I915_READ(PF_WIN_SZ(crtc->pipe));
+
+       ilk_get_pfit_pos_size(crtc_state,
+                             I915_READ(PF_WIN_POS(crtc->pipe)),
+                             I915_READ(PF_WIN_SZ(crtc->pipe)));
 }
 
 static bool ironlake_get_pipe_config(struct intel_crtc *crtc,
@@ -12383,9 +12405,8 @@ static void intel_dump_pipe_config(const struct 
intel_crtc_state *pipe_config,
                              pipe_config->gmch_pfit.pgm_ratios,
                              pipe_config->gmch_pfit.lvds_border_bits);
        else
-               DRM_DEBUG_KMS("pch pfit: pos: 0x%08x, size: 0x%08x, %s, force 
thru: %s\n",
-                             pipe_config->pch_pfit.pos,
-                             pipe_config->pch_pfit.size,
+               DRM_DEBUG_KMS("pch pfit: " DRM_RECT_FMT ", %s, force thru: 
%s\n",
+                             DRM_RECT_ARG(&pipe_config->pch_pfit.dst),
                              enableddisabled(pipe_config->pch_pfit.enabled),
                              yesno(pipe_config->pch_pfit.force_thru));
 
@@ -13058,8 +13079,10 @@ intel_pipe_config_compare(const struct 
intel_crtc_state *current_config,
 
                PIPE_CONF_CHECK_BOOL(pch_pfit.enabled);
                if (current_config->pch_pfit.enabled) {
-                       PIPE_CONF_CHECK_X(pch_pfit.pos);
-                       PIPE_CONF_CHECK_X(pch_pfit.size);
+                       PIPE_CONF_CHECK_I(pch_pfit.dst.x1);
+                       PIPE_CONF_CHECK_I(pch_pfit.dst.y1);
+                       PIPE_CONF_CHECK_I(pch_pfit.dst.x2);
+                       PIPE_CONF_CHECK_I(pch_pfit.dst.y2);
                }
 
                PIPE_CONF_CHECK_I(scaler_state.scaler_id);
diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h 
b/drivers/gpu/drm/i915/display/intel_display_types.h
index 8358152e403e..ab4ec6215c22 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -902,8 +902,7 @@ struct intel_crtc_state {
 
        /* Panel fitter placement and size for Ironlake+ */
        struct {
-               u32 pos;
-               u32 size;
+               struct drm_rect dst;
                bool enabled;
                bool force_thru;
        } pch_pfit;
diff --git a/drivers/gpu/drm/i915/display/intel_panel.c 
b/drivers/gpu/drm/i915/display/intel_panel.c
index 4601416c603e..68257b21abf5 100644
--- a/drivers/gpu/drm/i915/display/intel_panel.c
+++ b/drivers/gpu/drm/i915/display/intel_panel.c
@@ -179,13 +179,13 @@ intel_pch_panel_fitting(struct intel_crtc *intel_crtc,
                        int fitting_mode)
 {
        const struct drm_display_mode *adjusted_mode = 
&pipe_config->base.adjusted_mode;
-       int x = 0, y = 0, width = 0, height = 0;
+       int x, y, width, height;
 
        /* Native modes don't need fitting */
        if (adjusted_mode->crtc_hdisplay == pipe_config->pipe_src_w &&
            adjusted_mode->crtc_vdisplay == pipe_config->pipe_src_h &&
            pipe_config->output_format != INTEL_OUTPUT_FORMAT_YCBCR420)
-               goto done;
+               return;
 
        switch (fitting_mode) {
        case DRM_MODE_SCALE_CENTER:
@@ -231,14 +231,13 @@ intel_pch_panel_fitting(struct intel_crtc *intel_crtc,
                break;
 
        default:
-               WARN(1, "bad panel fit mode: %d\n", fitting_mode);
+               MISSING_CASE(fitting_mode);
                return;
        }
 
-done:
-       pipe_config->pch_pfit.pos = (x << 16) | y;
-       pipe_config->pch_pfit.size = (width << 16) | height;
-       pipe_config->pch_pfit.enabled = pipe_config->pch_pfit.size != 0;
+       drm_rect_init(&pipe_config->pch_pfit.dst,
+                     x, y, width, height);
+       pipe_config->pch_pfit.enabled = true;
 }
 
 static void
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 80ea5074cabd..e7ce80acdd45 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -4102,7 +4102,6 @@ skl_pipe_downscale_amount(const struct intel_crtc_state 
*crtc_state)
 {
        uint_fixed_16_16_t pipe_downscale = u32_to_fixed16(1);
        u32 src_w, src_h, dst_w, dst_h;
-       u32 pfit_size = crtc_state->pch_pfit.size;
        uint_fixed_16_16_t fp_w_ratio, fp_h_ratio;
        uint_fixed_16_16_t downscale_h, downscale_w;
 
@@ -4112,8 +4111,8 @@ skl_pipe_downscale_amount(const struct intel_crtc_state 
*crtc_state)
 
        src_w = crtc_state->pipe_src_w;
        src_h = crtc_state->pipe_src_h;
-       dst_w = pfit_size >> 16;
-       dst_h = pfit_size & 0xffff;
+       dst_w = drm_rect_width(&crtc_state->pch_pfit.dst);
+       dst_h = drm_rect_height(&crtc_state->pch_pfit.dst);
 
        if (!dst_w || !dst_h)
                return pipe_downscale;
-- 
2.21.0

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