linux-kernel - [PATCH] ASoC: fsl-asoc-card: Get "extal" clock rate by clk_get

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Thu,  6 Aug 2020 15:39:45 +0800
From:   Shengjiu Wang <shengjiu.wang@....com>
To:     timur@...nel.org, nicoleotsuka@...il.com, Xiubo.Lee@...il.com,
        festevam@...il.com, lgirdwood@...il.com, broonie@...nel.org,
        perex@...ex.cz, tiwai@...e.com, alsa-devel@...a-project.org,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: [PATCH] ASoC: fsl-asoc-card: Get "extal" clock rate by clk_get_rate

On some platform(.e.g. i.MX8QM MEK), the "extal" clock is different
with the mclk of codec, then the clock rate is also different.
So it is better to get clock rate of "extal" rate by clk_get_rate,
don't reuse the clock rate of mclk.

Signed-off-by: Shengjiu Wang <shengjiu.wang@....com>
---
 sound/soc/fsl/fsl-asoc-card.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/sound/soc/fsl/fsl-asoc-card.c b/sound/soc/fsl/fsl-asoc-card.c
index 52adedc03245..2c92a5efad61 100644
--- a/sound/soc/fsl/fsl-asoc-card.c
+++ b/sound/soc/fsl/fsl-asoc-card.c
@@ -696,6 +696,13 @@ static int fsl_asoc_card_probe(struct platform_device *pdev)
 			goto asrc_fail;
 		}
 	} else if (of_node_name_eq(cpu_np, "esai")) {
+		struct clk *esai_clk = clk_get(&cpu_pdev->dev, "extal");
+
+		if (!IS_ERR(esai_clk)) {
+			priv->cpu_priv.sysclk_freq[TX] = clk_get_rate(esai_clk);
+			priv->cpu_priv.sysclk_freq[RX] = clk_get_rate(esai_clk);
+			clk_put(esai_clk);
+		}
 		priv->cpu_priv.sysclk_id[1] = ESAI_HCKT_EXTAL;
 		priv->cpu_priv.sysclk_id[0] = ESAI_HCKR_EXTAL;
 	} else if (of_node_name_eq(cpu_np, "sai")) {
-- 
2.27.0