drm/gma500/cdv: Convert to generic gamma funcs

There is a slight difference in how we pick the palette register in the
generic function but we should be ok as long as psb_intel_crtc->pipe and
the register map is sane.
Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>

drivers/gpu/drm/gma500/cdv_intel_display.c

@@ -593,58 +593,6 @@ void cdv_intel_update_watermark(struct drm_device *dev, struct drm_crtc *crtc)
 	}
 }
 
-/** Loads the palette/gamma unit for the CRTC with the prepared values */
-static void cdv_intel_crtc_load_lut(struct drm_crtc *crtc)
-{
-	struct drm_device *dev = crtc->dev;
-	struct drm_psb_private *dev_priv = dev->dev_private;
-	struct psb_intel_crtc *psb_intel_crtc = to_psb_intel_crtc(crtc);
-	int palreg = PALETTE_A;
-	int i;
-
-	/* The clocks have to be on to load the palette. */
-	if (!crtc->enabled)
-		return;
-
-	switch (psb_intel_crtc->pipe) {
-	case 0:
-		break;
-	case 1:
-		palreg = PALETTE_B;
-		break;
-	case 2:
-		palreg = PALETTE_C;
-		break;
-	default:
-		dev_err(dev->dev, "Illegal Pipe Number.\n");
-		return;
-	}
-
-	if (gma_power_begin(dev, false)) {
-		for (i = 0; i < 256; i++) {
-			REG_WRITE(palreg + 4 * i,
-				  ((psb_intel_crtc->lut_r[i] +
-				  psb_intel_crtc->lut_adj[i]) << 16) |
-				  ((psb_intel_crtc->lut_g[i] +
-				  psb_intel_crtc->lut_adj[i]) << 8) |
-				  (psb_intel_crtc->lut_b[i] +
-				  psb_intel_crtc->lut_adj[i]));
-		}
-		gma_power_end(dev);
-	} else {
-		for (i = 0; i < 256; i++) {
-			dev_priv->regs.pipe[0].palette[i] =
-				  ((psb_intel_crtc->lut_r[i] +
-				  psb_intel_crtc->lut_adj[i]) << 16) |
-				  ((psb_intel_crtc->lut_g[i] +
-				  psb_intel_crtc->lut_adj[i]) << 8) |
-				  (psb_intel_crtc->lut_b[i] +
-				  psb_intel_crtc->lut_adj[i]);
-		}
-
-	}
-}
-
 /**
  * Return the pipe currently connected to the panel fitter,
  * or -1 if the panel fitter is not present or not in use
@@ -1213,22 +1161,6 @@ static int cdv_intel_crtc_cursor_move(struct drm_crtc *crtc, int x, int y)
 	return 0;
 }
 
-static void cdv_intel_crtc_gamma_set(struct drm_crtc *crtc, u16 *red,
-			 u16 *green, u16 *blue, uint32_t start, uint32_t size)
-{
-	struct psb_intel_crtc *psb_intel_crtc = to_psb_intel_crtc(crtc);
-	int i;
-	int end = (start + size > 256) ? 256 : start + size;
-
-	for (i = start; i < end; i++) {
-		psb_intel_crtc->lut_r[i] = red[i] >> 8;
-		psb_intel_crtc->lut_g[i] = green[i] >> 8;
-		psb_intel_crtc->lut_b[i] = blue[i] >> 8;
-	}
-
-	cdv_intel_crtc_load_lut(crtc);
-}
-
 static int cdv_crtc_set_config(struct drm_mode_set *set)
 {
 	int ret = 0;
@@ -1401,7 +1333,7 @@ const struct drm_crtc_funcs cdv_intel_crtc_funcs = {
 	.restore = cdv_intel_crtc_restore,
 	.cursor_set = cdv_intel_crtc_cursor_set,
 	.cursor_move = cdv_intel_crtc_cursor_move,
-	.gamma_set = cdv_intel_crtc_gamma_set,
+	.gamma_set = gma_crtc_gamma_set,
 	.set_config = cdv_crtc_set_config,
 	.destroy = gma_crtc_destroy,
 };