Commit 78377020 authored by AngeloGioacchino Del Regno's avatar AngeloGioacchino Del Regno Committed by Chun-Kuang Hu
Browse files

drm/mediatek: mtk_hdmi: Move N/CTS setting to new function 



In preparation for splitting common bits of this driver, moving
the hdmi_rec_n_table struct array, and the hdmi_recommended_n(),
hdmi_mode_clock_to_hz(), hdmi_expected_cts() functions, add one
function called mtk_hdmi_get_ncts() that sets both N and CTS in
a single call.

Reviewed-by: default avatarCK Hu <ck.hu@mediatek.com>
Signed-off-by: default avatarAngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://patchwork.kernel.org/project/dri-devel/patch/20250415104321.51149-12-angelogioacchino.delregno@collabora.com/


Signed-off-by: default avatarChun-Kuang Hu <chunkuang.hu@kernel.org>
parent c92493e3

drivers/gpu/drm/mediatek/mtk_hdmi.c

+8 −2
Original line number Diff line number Diff line
@@ -675,6 +675,13 @@ static unsigned int hdmi_expected_cts(unsigned int audio_sample_rate, 
				     128 * audio_sample_rate);

}



static void mtk_hdmi_get_ncts(unsigned int sample_rate, unsigned int clock,

			      unsigned int *n, unsigned int *cts)

{

	*n = hdmi_recommended_n(sample_rate, clock);

	*cts = hdmi_expected_cts(sample_rate, clock, *n);

}



static void do_hdmi_hw_aud_set_ncts(struct mtk_hdmi *hdmi, unsigned int n,

				    unsigned int cts)

{
@@ -705,8 +712,7 @@ static void mtk_hdmi_hw_aud_set_ncts(struct mtk_hdmi *hdmi, 
{

	unsigned int n, cts;



	n = hdmi_recommended_n(sample_rate, clock);

	cts = hdmi_expected_cts(sample_rate, clock, n);

	mtk_hdmi_get_ncts(sample_rate, clock, &n, &cts);



	dev_dbg(hdmi->dev, "%s: sample_rate=%u, clock=%d, cts=%u, n=%u\n",

		__func__, sample_rate, clock, n, cts);