linux-kernel - [PATCH AUTOSEL 4.19 003/106] drm: bridge: adv7511: Extend list of audio sample rates

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Message-Id: <20200608232238.3368589-3-sashal@kernel.org>
Date:   Mon,  8 Jun 2020 19:20:55 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Bogdan Togorean <bogdan.togorean@...log.com>,
        Andrzej Hajda <a.hajda@...sung.com>,
        Sasha Levin <sashal@...nel.org>,
        dri-devel@...ts.freedesktop.org
Subject: [PATCH AUTOSEL 4.19 003/106] drm: bridge: adv7511: Extend list of audio sample rates

From: Bogdan Togorean <bogdan.togorean@...log.com>

[ Upstream commit b97b6a1f6e14a25d1e1ca2a46c5fa3e2ca374e22 ]

ADV7511 support sample rates up to 192kHz. CTS and N parameters should
be computed accordingly so this commit extend the list up to maximum
supported sample rate.

Signed-off-by: Bogdan Togorean <bogdan.togorean@...log.com>
Reviewed-by: Andrzej Hajda <a.hajda@...sung.com>
Signed-off-by: Andrzej Hajda <a.hajda@...sung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200413113513.86091-2-bogdan.togorean@analog.com
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/bridge/adv7511/adv7511_audio.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511_audio.c b/drivers/gpu/drm/bridge/adv7511/adv7511_audio.c
index 1b4783d45c53..3a218b56a008 100644
--- a/drivers/gpu/drm/bridge/adv7511/adv7511_audio.c
+++ b/drivers/gpu/drm/bridge/adv7511/adv7511_audio.c
@@ -20,13 +20,15 @@ static void adv7511_calc_cts_n(unsigned int f_tmds, unsigned int fs,
 {
 	switch (fs) {
 	case 32000:
-		*n = 4096;
+	case 48000:
+	case 96000:
+	case 192000:
+		*n = fs * 128 / 1000;
 		break;
 	case 44100:
-		*n = 6272;
-		break;
-	case 48000:
-		*n = 6144;
+	case 88200:
+	case 176400:
+		*n = fs * 128 / 900;
 		break;
 	}
 
-- 
2.25.1