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.
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
---
drivers/gpu/drm/mediatek/mtk_hdmi.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c
index f60c4effe905..ef8dfcb77318 100644
--- a/drivers/gpu/drm/mediatek/mtk_hdmi.c
+++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c
@@ -682,6 +682,13 @@ 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)
{
@@ -712,8 +719,7 @@ 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);
--
2.47.0
