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; }