linux-kernel - [PATCH 01/11] ASoC: amd: acp: remove acp poweroff function

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Date:   Thu, 22 Jun 2023 20:53:39 +0530
From:   Syed Saba Kareem <Syed.SabaKareem@....com>
To:     <broonie@...nel.org>, <alsa-devel@...a-project.org>
CC:     <Vijendar.Mukunda@....com>, <Basavaraj.Hiregoudar@....com>,
        <Sunil-kumar.Dommati@....com>,
        Syed Saba Kareem <Syed.SabaKareem@....com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        V sujith kumar Reddy <Vsujithkumar.Reddy@....com>,
        Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>,
        "open list" <linux-kernel@...r.kernel.org>
Subject: [PATCH 01/11] ASoC: amd: acp: remove acp poweroff function

BIOS invokes ACP Power off sequence based on ACP device state.
Remove redundant code from ACP PCI driver for ACP Power off sequence.

Signed-off-by: Syed Saba Kareem <Syed.SabaKareem@....com>
---
 sound/soc/amd/acp/acp-rembrandt.c | 25 -------------------------
 sound/soc/amd/acp/acp-renoir.c    | 17 -----------------
 2 files changed, 42 deletions(-)

diff --git a/sound/soc/amd/acp/acp-rembrandt.c b/sound/soc/amd/acp/acp-rembrandt.c
index 5c455cc04113..1b997837c7d8 100644
--- a/sound/soc/amd/acp/acp-rembrandt.c
+++ b/sound/soc/amd/acp/acp-rembrandt.c
@@ -204,23 +204,6 @@ static int acp6x_power_on(void __iomem *base)
 	return -ETIMEDOUT;
 }
 
-static int acp6x_power_off(void __iomem *base)
-{
-	u32 val;
-	int timeout;
-
-	writel(ACP_PGFSM_CNTL_POWER_OFF_MASK,
-	       base + ACP6X_PGFSM_CONTROL);
-	timeout = 0;
-	while (++timeout < 500) {
-		val = readl(base + ACP6X_PGFSM_STATUS);
-		if ((val & ACP_PGFSM_STATUS_MASK) == ACP_POWERED_OFF)
-			return 0;
-		udelay(1);
-	}
-	return -ETIMEDOUT;
-}
-
 static int acp6x_reset(void __iomem *base)
 {
 	u32 val;
@@ -299,14 +282,6 @@ static int rmb_acp_deinit(void __iomem *base)
 	}
 
 	writel(0x00, base + ACP_CONTROL);
-
-	/* power off */
-	ret = acp6x_power_off(base);
-	if (ret) {
-		pr_err("ACP power off failed\n");
-		return ret;
-	}
-
 	return 0;
 }
 
diff --git a/sound/soc/amd/acp/acp-renoir.c b/sound/soc/amd/acp/acp-renoir.c
index b3cbc7f19ec5..f188365fe214 100644
--- a/sound/soc/amd/acp/acp-renoir.c
+++ b/sound/soc/amd/acp/acp-renoir.c
@@ -169,17 +169,6 @@ static int acp3x_power_on(void __iomem *base)
 	return readl_poll_timeout(base + ACP_PGFSM_STATUS, val, !val, DELAY_US, ACP_TIMEOUT);
 }
 
-static int acp3x_power_off(void __iomem *base)
-{
-	u32 val;
-
-	writel(ACP_PWR_OFF_MASK, base + ACP_PGFSM_CONTROL);
-
-	return readl_poll_timeout(base + ACP_PGFSM_STATUS, val,
-				  (val & ACP_PGFSM_STAT_MASK) == ACP_POWERED_OFF,
-				  DELAY_US, ACP_TIMEOUT);
-}
-
 static int acp3x_reset(void __iomem *base)
 {
 	u32 val;
@@ -246,12 +235,6 @@ static int rn_acp_deinit(void __iomem *base)
 		return ret;
 
 	writel(0x00, base + ACP_CONTROL);
-
-	/* power off */
-	ret = acp3x_power_off(base);
-	if (ret)
-		return ret;
-
 	return 0;
 }
 static int renoir_audio_probe(struct platform_device *pdev)
-- 
2.25.1