linux-kernel - [PATCH v4 05/24] ASoC: renesas: rz-ssi: Use only the proper amount of dividers

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Message-Id: <20241210170953.2936724-6-claudiu.beznea.uj@bp.renesas.com>
Date: Tue, 10 Dec 2024 19:09:34 +0200
From: Claudiu <claudiu.beznea@...on.dev>
To: geert+renesas@...der.be,
	mturquette@...libre.com,
	sboyd@...nel.org,
	robh+dt@...nel.org,
	lgirdwood@...il.com,
	broonie@...nel.org,
	magnus.damm@...il.com,
	perex@...ex.cz,
	tiwai@...e.com,
	p.zabel@...gutronix.de,
	biju.das.jz@...renesas.com
Cc: claudiu.beznea@...on.dev,
	linux-renesas-soc@...r.kernel.org,
	linux-clk@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	alsa-devel@...a-project.org,
	Claudiu Beznea <claudiu.beznea.uj@...renesas.com>
Subject: [PATCH v4 05/24] ASoC: renesas: rz-ssi: Use only the proper amount of dividers

From: Claudiu Beznea <claudiu.beznea.uj@...renesas.com>

There is no need to populate the ckdv[] with invalid dividers as that
part will not be indexed anyway. The ssi->audio_mck/bclk_rate should
always be >= 0. While at it, change the ckdv type as u8, as the divider
128 was previously using the s8 sign bit.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@...renesas.com>
---

Changes in v4:
- changed the ckdv type from s8 to u8 and updated patch description
  to reflect it

Changes in v3:
- s/sh/renesas in patch title

Changes in v2:
- none

 sound/soc/renesas/rz-ssi.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/sound/soc/renesas/rz-ssi.c b/sound/soc/renesas/rz-ssi.c
index 2d8721156099..178c915331e9 100644
--- a/sound/soc/renesas/rz-ssi.c
+++ b/sound/soc/renesas/rz-ssi.c
@@ -258,8 +258,7 @@ static void rz_ssi_stream_quit(struct rz_ssi_priv *ssi,
 static int rz_ssi_clk_setup(struct rz_ssi_priv *ssi, unsigned int rate,
 			    unsigned int channels)
 {
-	static s8 ckdv[16] = { 1,  2,  4,  8, 16, 32, 64, 128,
-			       6, 12, 24, 48, 96, -1, -1, -1 };
+	static u8 ckdv[] = { 1,  2,  4,  8, 16, 32, 64, 128, 6, 12, 24, 48, 96 };
 	unsigned int channel_bits = 32;	/* System Word Length */
 	unsigned long bclk_rate = rate * channels * channel_bits;
 	unsigned int div;
-- 
2.39.2