linux-kernel - Re: [PATCH v5 1/2] phy: qcom: Add driver for QCOM IPQ806x SATA PHY

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Message-ID: <53C54497.4010704@ti.com>
Date:	Tue, 15 Jul 2014 20:41:19 +0530
From:	Kishon Vijay Abraham I <kishon@...com>
To:	Kumar Gala <galak@...eaurora.org>
CC:	<linux-ide@...r.kernel.org>, <linux-arm-msm@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
	<sboyd@...eaurora.org>, <b.zolnierkie@...sung.com>
Subject: Re: [PATCH v5 1/2] phy: qcom: Add driver for QCOM IPQ806x SATA PHY

Hi,

On Wednesday 18 June 2014 12:03 AM, Kumar Gala wrote:
> Add a PHY driver for uses with AHCI based SATA controller driver on the
> IPQ806x family of SoCs.
> 
> Signed-off-by: Kumar Gala <galak@...eaurora.org>
> ---
> v5:
> * Fix copy/paste error when killing qcom_ipq806x_sata_delay_us
> 
> v4:
> * removed qcom_ipq806x_sata_delay_us as it was only used one
> 
> v3:
> * Added Kconfig HAS_IOMEM dep
> * re-ordered probe function so phy_provider_register is last
>  
> v2:
> * dropped unused dev pointer in struct qcom_ipq806x_sata_phy
> * remove unnecessary reg initializaiton
> * Removed unneeded error message
> * Added remove function to disable the clock
> 
>  drivers/phy/Kconfig                 |   7 ++
>  drivers/phy/Makefile                |   1 +
>  drivers/phy/phy-qcom-ipq806x-sata.c | 206 ++++++++++++++++++++++++++++++++++++
>  3 files changed, 214 insertions(+)
>  create mode 100644 drivers/phy/phy-qcom-ipq806x-sata.c
> 
> diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig
> index 16a2f06..b7b6bce 100644
> --- a/drivers/phy/Kconfig
> +++ b/drivers/phy/Kconfig
> @@ -178,4 +178,11 @@ config PHY_XGENE
>  	help
>  	  This option enables support for APM X-Gene SoC multi-purpose PHY.
>
.
.
<snip>
.
.
> +
> +static int qcom_ipq806x_sata_phy_probe(struct platform_device *pdev)
> +{
> +	struct qcom_ipq806x_sata_phy *phy;
> +	struct device *dev = &pdev->dev;
> +	struct resource *res;
> +	struct phy_provider *phy_provider;
> +	struct phy *generic_phy;
> +	int ret;
> +
> +	phy = devm_kzalloc(dev, sizeof(*phy), GFP_KERNEL);
> +	if (!phy) {
> +		dev_err(dev, "%s: failed to allocate phy\n", __func__);
> +		return -ENOMEM;
> +	}
> +
> +	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> +	phy->mmio = devm_ioremap_resource(dev, res);
> +	if (IS_ERR(phy->mmio))
> +		return PTR_ERR(phy->mmio);
> +
> +	generic_phy = devm_phy_create(dev, &qcom_ipq806x_sata_phy_ops, NULL);
> +	if (IS_ERR(generic_phy)) {
> +		dev_err(dev, "%s: failed to create phy\n", __func__);
> +		return PTR_ERR(generic_phy);
> +	}
> +
> +	phy_set_drvdata(generic_phy, phy);
> +
> +	phy->cfg_clk = devm_clk_get(dev, "cfg");
> +	if (IS_ERR(phy->cfg_clk)) {
> +		dev_err(dev, "Failed to get sata cfg clock\n");
> +		return PTR_ERR(phy->cfg_clk);
> +	}
> +
> +	ret = clk_prepare_enable(phy->cfg_clk);
> +	if (ret)
> +		return ret;
> +
> +	phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
> +	if (IS_ERR(phy_provider)) {
> +		clk_disable_unprepare(phy->cfg_clk);
> +		dev_err(dev, "%s: failed to register phy\n", __func__);
> +		return PTR_ERR(phy_provider);
> +	}
> +
> +	return 0;
> +}
> +
> +static int qcom_ipq806x_sata_phy_remove(struct platform_device *pdev)
> +{
> +	struct qcom_ipq806x_sata_phy *phy = platform_get_drvdata(pdev);

Where is platform_set_drvdata()?

Thanks
Kishon
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