[PATCH v6 34/42] drm/mediatek: mtk_hdmi: Add HDMI IP version configuration to pdata

AngeloGioacchino Del Regno
2025-02-11T11:35:12Z

In preparation for adding a driver for the HDMIv2 IP and before
moving the common bits out of this driver, add a new structure
`mtk_hdmi_ver_conf`, holding pointers to HDMI IP version specific
drm_bridge_funcs, hdmi_codec_ops and clock array used for probe,
and nest it into the mtk_hdmi_conf platform data structure.

While at it, also convert all of the direct users of
mtk_hdmi_bridge_funcs, mtk_hdmi_audio_codec_ops, mtk_hdmi_clk_names
to use pointers from the ver_conf platform data.

In order to do so, it was also necessary to fill a new version 1
specific const `mtk_hdmi_v1_ver_conf` and assign it to all of the
currently supported compatibles for this driver.

This commit brings no functional change.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
drivers/gpu/drm/mediatek/mtk_hdmi.c | 36 ++++++++++++++++++++++++-----
1 file changed, 30 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c
index d3bfae2f1842..332567f18c9a 100644
--- a/drivers/gpu/drm/mediatek/mtk_hdmi.c
+++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c
@@ -144,7 +144,15 @@ struct hdmi_audio_param {
struct hdmi_codec_params codec_params;
};

+struct mtk_hdmi_ver_conf {
+ const struct drm_bridge_funcs *bridge_funcs;
+ const struct hdmi_codec_ops *codec_ops;
+ const char * const *mtk_hdmi_clock_names;
+ int num_clocks;
+};
+
struct mtk_hdmi_conf {
+ const struct mtk_hdmi_ver_conf *ver_conf;
bool tz_disabled;
bool cea_modes_only;
unsigned long max_mode_clock;
@@ -1605,7 +1613,7 @@ static int mtk_hdmi_register_audio_driver(struct device *dev)
struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
struct hdmi_audio_param *aud_param = &hdmi->aud_param;
struct hdmi_codec_pdata codec_data = {
- .ops = &mtk_hdmi_audio_codec_ops,
+ .ops = hdmi->conf->ver_conf->codec_ops,
.max_i2s_channels = 2,
.i2s = 1,
.data = hdmi,
@@ -1638,6 +1646,7 @@ static int mtk_hdmi_register_audio_driver(struct device *dev)

static int mtk_hdmi_probe(struct platform_device *pdev)
{
+ const struct mtk_hdmi_ver_conf *ver_conf;
struct mtk_hdmi *hdmi;
struct device *dev = &pdev->dev;
const int num_clocks = MTK_HDMI_CLK_COUNT;
@@ -1649,12 +1658,14 @@ static int mtk_hdmi_probe(struct platform_device *pdev)

hdmi->dev = dev;
hdmi->conf = of_device_get_match_data(dev);
+ ver_conf = hdmi->conf->ver_conf;

- hdmi->clk = devm_kcalloc(dev, num_clocks, sizeof(*hdmi->clk), GFP_KERNEL);
+ hdmi->clk = devm_kcalloc(dev, ver_conf->num_clocks, sizeof(*hdmi->clk), GFP_KERNEL);
if (!hdmi->clk)
return -ENOMEM;

- ret = mtk_hdmi_dt_parse_pdata(hdmi, pdev, mtk_hdmi_clk_names, num_clocks);
+ ret = mtk_hdmi_dt_parse_pdata(hdmi, pdev, ver_conf->mtk_hdmi_clock_names,
+ ver_conf->num_clocks);
if (ret)
return ret;

@@ -1671,7 +1682,7 @@ static int mtk_hdmi_probe(struct platform_device *pdev)
return dev_err_probe(dev, ret,
"Failed to register audio driver\n");

- hdmi->bridge.funcs = &mtk_hdmi_bridge_funcs;
+ hdmi->bridge.funcs = ver_conf->bridge_funcs;
hdmi->bridge.of_node = pdev->dev.of_node;
hdmi->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID
| DRM_BRIDGE_OP_HPD;
@@ -1716,19 +1727,32 @@ static __maybe_unused int mtk_hdmi_resume(struct device *dev)

static SIMPLE_DEV_PM_OPS(mtk_hdmi_pm_ops, mtk_hdmi_suspend, mtk_hdmi_resume);

+static const struct mtk_hdmi_ver_conf mtk_hdmi_v1_ver_conf = {
+ .bridge_funcs = &mtk_hdmi_bridge_funcs,
+ .codec_ops = &mtk_hdmi_audio_codec_ops,
+ .mtk_hdmi_clock_names = mtk_hdmi_clk_names,
+ .num_clocks = ARRAY_SIZE(mtk_hdmi_clk_names)
+};
+
static const struct mtk_hdmi_conf mtk_hdmi_conf_mt2701 = {
.tz_disabled = true,
+ .ver_conf = &mtk_hdmi_v1_ver_conf
};

static const struct mtk_hdmi_conf mtk_hdmi_conf_mt8167 = {
- .max_mode_clock = 148500,
.cea_modes_only = true,
+ .max_mode_clock = 148500,
+ .ver_conf = &mtk_hdmi_v1_ver_conf
+};
+
+static const struct mtk_hdmi_conf mtk_hdmi_conf_mt8173 = {
+ .ver_conf = &mtk_hdmi_v1_ver_conf
};

static const struct of_device_id mtk_hdmi_of_ids[] = {
{ .compatible = "mediatek,mt2701-hdmi", .data = &mtk_hdmi_conf_mt2701 },
{ .compatible = "mediatek,mt8167-hdmi", .data = &mtk_hdmi_conf_mt8167 },
- { .compatible = "mediatek,mt8173-hdmi" },
+ { .compatible = "mediatek,mt8173-hdmi", .data = &mtk_hdmi_conf_mt8173 },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, mtk_hdmi_of_ids);
--
2.48.1