linux-kernel - [PATCH 03/13] ASoC: ti: davinci-i2s: Remove the unused clk_input

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Message-ID: <20240315112745.63230-4-bastien.curutchet@bootlin.com>
Date: Fri, 15 Mar 2024 12:27:35 +0100
From: Bastien Curutchet <bastien.curutchet@...tlin.com>
To: Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>,
	Rob Herring <robh+dt@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Peter Ujfalusi <peter.ujfalusi@...il.com>,
	Jaroslav Kysela <perex@...ex.cz>,
	Takashi Iwai <tiwai@...e.com>,
	Bastien Curutchet <bastien.curutchet@...tlin.com>
Cc: linux-sound@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	alsa-devel@...a-project.org,
	Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
	herve.codina@...tlin.com,
	christophercordahi@...ometrics.ca
Subject: [PATCH 03/13] ASoC: ti: davinci-i2s: Remove the unused clk_input_pin attribute

The clk_input_pin attribute of davinci_mcbsp_dev struct is not set since
commit 257ade78b601 ("ASoC: davinci-i2s: Convert to use edma-pcm").

Remove the attribute.
Keep the behaviour of the MCBSP_CLKR case as MCBSP_CLKR == 0.
I can't test the BC_FP format so I added back the initial comment that
was removed by commit ec6375533748 ("ASoC: DaVinci: Added selection of
clk input pin for McBSP"). This was the last dependency to
linux/platform_data/davinci_asp.h so it is not included anymore.

Remove the enum mcbsp_clk_input_pin from davinci_asp.h as it is not used
anywhere else.

Signed-off-by: Bastien Curutchet <bastien.curutchet@...tlin.com>
---
 include/linux/platform_data/davinci_asp.h | 15 --------------
 sound/soc/ti/davinci-i2s.c                | 24 ++++-------------------
 2 files changed, 4 insertions(+), 35 deletions(-)

diff --git a/include/linux/platform_data/davinci_asp.h b/include/linux/platform_data/davinci_asp.h
index c8645b2ed3c0..b9c8520b4bd3 100644
--- a/include/linux/platform_data/davinci_asp.h
+++ b/include/linux/platform_data/davinci_asp.h
@@ -25,16 +25,6 @@ struct davinci_mcasp_pdata {
 	unsigned sram_size_capture;
 	struct gen_pool *sram_pool;
 
-	/*
-	 * If McBSP peripheral gets the clock from an external pin,
-	 * there are three chooses, that are MCBSP_CLKX, MCBSP_CLKR
-	 * and MCBSP_CLKS.
-	 * Depending on different hardware connections it is possible
-	 * to use this setting to change the behaviour of McBSP
-	 * driver.
-	 */
-	int clk_input_pin;
-
 	/*
 	 * This flag works when both clock and FS are outputs for the cpu
 	 * and makes clock more accurate (FS is not symmetrical and the
@@ -91,11 +81,6 @@ enum {
 	MCASP_VERSION_OMAP,	/* OMAP4/5 */
 };
 
-enum mcbsp_clk_input_pin {
-	MCBSP_CLKR = 0,		/* as in DM365 */
-	MCBSP_CLKS,
-};
-
 #define INACTIVE_MODE	0
 #define TX_MODE		1
 #define RX_MODE		2
diff --git a/sound/soc/ti/davinci-i2s.c b/sound/soc/ti/davinci-i2s.c
index 07c8b2259208..5c906641640e 100644
--- a/sound/soc/ti/davinci-i2s.c
+++ b/sound/soc/ti/davinci-i2s.c
@@ -19,7 +19,6 @@
 #include <linux/delay.h>
 #include <linux/io.h>
 #include <linux/clk.h>
-#include <linux/platform_data/davinci_asp.h>
 
 #include <sound/core.h>
 #include <sound/pcm.h>
@@ -159,7 +158,6 @@ struct davinci_mcbsp_dev {
 
 	unsigned int fmt;
 	int clk_div;
-	int clk_input_pin;
 	bool i2s_accurate_sck;
 };
 
@@ -239,26 +237,12 @@ static int davinci_i2s_set_dai_fmt(struct snd_soc_dai *cpu_dai,
 			DAVINCI_MCBSP_PCR_CLKRM;
 		break;
 	case SND_SOC_DAIFMT_BC_FP:
-		pcr = DAVINCI_MCBSP_PCR_FSRM | DAVINCI_MCBSP_PCR_FSXM;
 		/*
-		 * Selection of the clock input pin that is the
-		 * input for the Sample Rate Generator.
-		 * McBSP FSR and FSX are driven by the Sample Rate
-		 * Generator.
+		 * McBSP CLKR pin is the input for the Sample Rate Generator.
+		 * McBSP FSR and FSX are driven by the Sample Rate Generator.
 		 */
-		switch (dev->clk_input_pin) {
-		case MCBSP_CLKS:
-			pcr |= DAVINCI_MCBSP_PCR_CLKXM |
-				DAVINCI_MCBSP_PCR_CLKRM;
-			break;
-		case MCBSP_CLKR:
-			pcr |= DAVINCI_MCBSP_PCR_SCLKME;
-			break;
-		default:
-			dev_err(dev->dev, "bad clk_input_pin\n");
-			return -EINVAL;
-		}
-
+		pcr = DAVINCI_MCBSP_PCR_FSRM | DAVINCI_MCBSP_PCR_FSXM;
+		pcr |= DAVINCI_MCBSP_PCR_SCLKME;
 		break;
 	case SND_SOC_DAIFMT_BC_FC:
 		/* codec is master */
-- 
2.43.2