From: Sugar Zhang <sugar.zhang@rock-chips.com>
To: broonie@kernel.org
Cc: linux-rockchip@lists.infradead.org,
Sugar Zhang <sugar.zhang@rock-chips.com>,
Liam Girdwood <lgirdwood@gmail.com>,
Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.com>,
Heiko Stuebner <heiko@sntech.de>,
alsa-devel@alsa-project.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: [PATCH] ASoC: rockchip: spdif: Handle clk by pm runtime
Date: Mon, 13 Jul 2020 18:26:00 +0800 [thread overview]
Message-ID: <1594635960-67855-1-git-send-email-sugar.zhang@rock-chips.com> (raw)
This patch handle the clk by pm runtime mechanism to simplify
the clk management.
Signed-off-by: Sugar Zhang <sugar.zhang@rock-chips.com>
---
sound/soc/rockchip/rockchip_spdif.c | 59 +++++++++++--------------------------
1 file changed, 17 insertions(+), 42 deletions(-)
diff --git a/sound/soc/rockchip/rockchip_spdif.c b/sound/soc/rockchip/rockchip_spdif.c
index 6635145..6748108 100644
--- a/sound/soc/rockchip/rockchip_spdif.c
+++ b/sound/soc/rockchip/rockchip_spdif.c
@@ -306,44 +306,22 @@ static int rk_spdif_probe(struct platform_device *pdev)
return -ENOMEM;
spdif->hclk = devm_clk_get(&pdev->dev, "hclk");
- if (IS_ERR(spdif->hclk)) {
- dev_err(&pdev->dev, "Can't retrieve rk_spdif bus clock\n");
+ if (IS_ERR(spdif->hclk))
return PTR_ERR(spdif->hclk);
- }
- ret = clk_prepare_enable(spdif->hclk);
- if (ret) {
- dev_err(spdif->dev, "hclock enable failed %d\n", ret);
- return ret;
- }
spdif->mclk = devm_clk_get(&pdev->dev, "mclk");
- if (IS_ERR(spdif->mclk)) {
- dev_err(&pdev->dev, "Can't retrieve rk_spdif master clock\n");
- ret = PTR_ERR(spdif->mclk);
- goto err_disable_hclk;
- }
-
- ret = clk_prepare_enable(spdif->mclk);
- if (ret) {
- dev_err(spdif->dev, "clock enable failed %d\n", ret);
- goto err_disable_clocks;
- }
+ if (IS_ERR(spdif->mclk))
+ return PTR_ERR(spdif->mclk);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
regs = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR(regs)) {
- ret = PTR_ERR(regs);
- goto err_disable_clocks;
- }
+ if (IS_ERR(regs))
+ return PTR_ERR(regs);
spdif->regmap = devm_regmap_init_mmio_clk(&pdev->dev, "hclk", regs,
&rk_spdif_regmap_config);
- if (IS_ERR(spdif->regmap)) {
- dev_err(&pdev->dev,
- "Failed to initialise managed register map\n");
- ret = PTR_ERR(spdif->regmap);
- goto err_disable_clocks;
- }
+ if (IS_ERR(spdif->regmap))
+ return PTR_ERR(spdif->regmap);
spdif->playback_dma_data.addr = res->start + SPDIF_SMPDR;
spdif->playback_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
@@ -352,47 +330,44 @@ static int rk_spdif_probe(struct platform_device *pdev)
spdif->dev = &pdev->dev;
dev_set_drvdata(&pdev->dev, spdif);
- pm_runtime_set_active(&pdev->dev);
pm_runtime_enable(&pdev->dev);
- pm_request_idle(&pdev->dev);
+ if (!pm_runtime_enabled(&pdev->dev)) {
+ ret = rk_spdif_runtime_resume(&pdev->dev);
+ if (ret)
+ goto err_pm_runtime;
+ }
ret = devm_snd_soc_register_component(&pdev->dev,
&rk_spdif_component,
&rk_spdif_dai, 1);
if (ret) {
dev_err(&pdev->dev, "Could not register DAI\n");
- goto err_pm_runtime;
+ goto err_pm_suspend;
}
ret = devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0);
if (ret) {
dev_err(&pdev->dev, "Could not register PCM\n");
- goto err_pm_runtime;
+ goto err_pm_suspend;
}
return 0;
+err_pm_suspend:
+ if (!pm_runtime_status_suspended(&pdev->dev))
+ rk_spdif_runtime_suspend(&pdev->dev);
err_pm_runtime:
pm_runtime_disable(&pdev->dev);
-err_disable_clocks:
- clk_disable_unprepare(spdif->mclk);
-err_disable_hclk:
- clk_disable_unprepare(spdif->hclk);
return ret;
}
static int rk_spdif_remove(struct platform_device *pdev)
{
- struct rk_spdif_dev *spdif = dev_get_drvdata(&pdev->dev);
-
pm_runtime_disable(&pdev->dev);
if (!pm_runtime_status_suspended(&pdev->dev))
rk_spdif_runtime_suspend(&pdev->dev);
- clk_disable_unprepare(spdif->mclk);
- clk_disable_unprepare(spdif->hclk);
-
return 0;
}
--
2.7.4
next reply other threads:[~2020-07-13 10:26 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-13 10:26 Sugar Zhang [this message]
2020-07-13 17:27 ` [PATCH] ASoC: rockchip: spdif: Handle clk by pm runtime Mark Brown
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