Commit 1b0965f4 authored by Krzysztof Kozlowski's avatar Krzysztof Kozlowski Committed by Chun-Kuang Hu
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drm/mediatek/hdmi: Use syscon_regmap_lookup_by_phandle_args 



Use syscon_regmap_lookup_by_phandle_args() which is a wrapper over
syscon_regmap_lookup_by_phandle() combined with getting the syscon
argument.  Except simpler code this annotates within one line that given
phandle has arguments, so grepping for code would be easier.

There is also no real benefit in printing errors on missing syscon
argument, because this is done just too late: runtime check on
static/build-time data.  Dtschema and Devicetree bindings offer the
static/build-time check for this already.

Signed-off-by: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://patchwork.kernel.org/project/dri-devel/patch/20250415104321.51149-4-angelogioacchino.delregno@collabora.com/


Signed-off-by: default avatarChun-Kuang Hu <chunkuang.hu@kernel.org>
parent 8745e78c

drivers/gpu/drm/mediatek/mtk_hdmi.c

+5 −9
Original line number Diff line number Diff line
@@ -1447,15 +1447,11 @@ static int mtk_hdmi_dt_parse_pdata(struct mtk_hdmi *hdmi, 
	 * MMSYS_CONFIG device and the register offset of the HDMI_SYS_CFG

	 * registers it contains.

	 */

	regmap = syscon_regmap_lookup_by_phandle(np, "mediatek,syscon-hdmi");

	ret = of_property_read_u32_index(np, "mediatek,syscon-hdmi", 1,

					 &hdmi->sys_offset);

	if (IS_ERR(regmap))

		ret = PTR_ERR(regmap);

	if (ret) {

		dev_err(dev,

			"Failed to get system configuration registers: %d\n",

			ret);

	regmap = syscon_regmap_lookup_by_phandle_args(np, "mediatek,syscon-hdmi",

						      1, &hdmi->sys_offset);

	if (IS_ERR(regmap)) {

		ret = dev_err_probe(dev, PTR_ERR(regmap),

				    "Failed to get system configuration registers\n");

		goto put_device;

	}

	hdmi->sys_regmap = regmap;