drm2/i915/intel_overlay.c

1219 static int check_gamma(struct drm_intel_overlay_attrs *attrs)
1221 	if (!check_gamma_bounds(0, attrs->gamma0) ||
1222 	    !check_gamma_bounds(attrs->gamma0, attrs->gamma1) ||
1223 	    !check_gamma_bounds(attrs->gamma1, attrs->gamma2) ||
1224 	    !check_gamma_bounds(attrs->gamma2, attrs->gamma3) ||
1225 	    !check_gamma_bounds(attrs->gamma3, attrs->gamma4) ||
1226 	    !check_gamma_bounds(attrs->gamma4, attrs->gamma5) ||
1227 	    !check_gamma_bounds(attrs->gamma5, 0x00ffffff))
1230 	if (!check_gamma5_errata(attrs->gamma5))
1239 	struct drm_intel_overlay_attrs *attrs = data;
1256 	if (!(attrs->flags & I915_OVERLAY_UPDATE_ATTRS)) {
1257 		attrs->color_key  = overlay->color_key;
1258 		attrs->brightness = overlay->brightness;
1259 		attrs->contrast   = overlay->contrast;
1260 		attrs->saturation = overlay->saturation;
1263 			attrs->gamma0 = I915_READ(OGAMC0);
1264 			attrs->gamma1 = I915_READ(OGAMC1);
1265 			attrs->gamma2 = I915_READ(OGAMC2);
1266 			attrs->gamma3 = I915_READ(OGAMC3);
1267 			attrs->gamma4 = I915_READ(OGAMC4);
1268 			attrs->gamma5 = I915_READ(OGAMC5);
1271 		if (attrs->brightness < -128 || attrs->brightness > 127)
1273 		if (attrs->contrast > 255)
1275 		if (attrs->saturation > 1023)
1278 		overlay->color_key  = attrs->color_key;
1279 		overlay->brightness = attrs->brightness;
1280 		overlay->contrast   = attrs->contrast;
1281 		overlay->saturation = attrs->saturation;
1293 		if (attrs->flags & I915_OVERLAY_UPDATE_GAMMA) {
1302 			ret = check_gamma(attrs);
1306 			I915_WRITE(OGAMC0, attrs->gamma0);
1307 			I915_WRITE(OGAMC1, attrs->gamma1);
1308 			I915_WRITE(OGAMC2, attrs->gamma2);
1309 			I915_WRITE(OGAMC3, attrs->gamma3);
1310 			I915_WRITE(OGAMC4, attrs->gamma4);
1311 			I915_WRITE(OGAMC5, attrs->gamma5);