linux-kernel - [PATCH v6 17/17] ASoC: fsl_ssi: Use ssi->streams instead of reading register

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Message-Id: <1518473005-14090-18-git-send-email-nicoleotsuka@gmail.com>
Date:   Mon, 12 Feb 2018 14:03:25 -0800
From:   Nicolin Chen <nicoleotsuka@...il.com>
To:     broonie@...nel.org, timur@...i.org
Cc:     caleb@...me.org, mail@...iej.szmigiero.name, fabio.estevam@....com,
        alsa-devel@...a-project.org, linuxppc-dev@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org, lgirdwood@...il.com,
        arnaud.mouiche@...oxia.com, lukma@...x.de, kernel@...gutronix.de
Subject: [PATCH v6 17/17] ASoC: fsl_ssi: Use ssi->streams instead of reading register

Since ssi->streams is being updated along with SCR register and
its SSIEN bit, it's simpler to use it instead.

Signed-off-by: Nicolin Chen <nicoleotsuka@...il.com>
Tested-by: Caleb Crome <caleb@...me.org>
Tested-by: Maciej S. Szmigiero <mail@...iej.szmigiero.name>
Reviewed-by: Maciej S. Szmigiero <mail@...iej.szmigiero.name>
---
 sound/soc/fsl/fsl_ssi.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/sound/soc/fsl/fsl_ssi.c b/sound/soc/fsl/fsl_ssi.c
index 5bc67ad..0823b08 100644
--- a/sound/soc/fsl/fsl_ssi.c
+++ b/sound/soc/fsl/fsl_ssi.c
@@ -803,11 +803,6 @@ static int fsl_ssi_hw_params(struct snd_pcm_substream *substream,
 	unsigned int sample_size = params_width(hw_params);
 	u32 wl = SSI_SxCCR_WL(sample_size);
 	int ret;
-	u32 scr;
-	int enabled;
-
-	regmap_read(regs, REG_SSI_SCR, &scr);
-	enabled = scr & SSI_SCR_SSIEN;
 
 	/*
 	 * SSI is properly configured if it is enabled and running in
@@ -815,7 +810,7 @@ static int fsl_ssi_hw_params(struct snd_pcm_substream *substream,
 	 * that should set separate configurations for STCCR and SRCCR
 	 * despite running in the synchronous mode.
 	 */
-	if (enabled && ssi->synchronous)
+	if (ssi->streams && ssi->synchronous)
 		return 0;
 
 	if (fsl_ssi_is_i2s_master(ssi)) {
-- 
2.1.4