![Vivek Gautam](/assets/img/avatar_default.png)
Adding vendor specific directories in phy to group phy drivers under their respective vendor umbrella. Also updated the MAINTAINERS file to reflect the correct directory structure for phy drivers. Signed-off-by: Vivek Gautam <vivek.gautam@codeaurora.org> Acked-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Krzysztof Kozlowski <krzk@kernel.org> Acked-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com> Cc: Kishon Vijay Abraham I <kishon@ti.com> Cc: David S. Miller <davem@davemloft.net> Cc: Geert Uytterhoeven <geert+renesas@glider.be> Cc: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Cc: Guenter Roeck <linux@roeck-us.net> Cc: Heiko Stuebner <heiko@sntech.de> Cc: Viresh Kumar <viresh.kumar@linaro.org> Cc: Maxime Ripard <maxime.ripard@free-electrons.com> Cc: Chen-Yu Tsai <wens@csie.org> Cc: Sylwester Nawrocki <s.nawrocki@samsung.com> Cc: Krzysztof Kozlowski <krzk@kernel.org> Cc: Jaehoon Chung <jh80.chung@samsung.com> Cc: Stephen Boyd <stephen.boyd@linaro.org> Cc: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-arm-msm@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: linux-omap@vger.kernel.org Cc: linux-renesas-soc@vger.kernel.org Cc: linux-rockchip@lists.infradead.org Cc: linux-samsung-soc@vger.kernel.org Cc: linux-usb@vger.kernel.org Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
139 lines
3.4 KiB
C
139 lines
3.4 KiB
C
/*
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* phy-mvebu-sata.c: SATA Phy driver for the Marvell mvebu SoCs.
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*
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* Copyright (C) 2013 Andrew Lunn <andrew@lunn.ch>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/clk.h>
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#include <linux/phy/phy.h>
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#include <linux/io.h>
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#include <linux/platform_device.h>
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struct priv {
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struct clk *clk;
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void __iomem *base;
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};
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#define SATA_PHY_MODE_2 0x0330
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#define MODE_2_FORCE_PU_TX BIT(0)
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#define MODE_2_FORCE_PU_RX BIT(1)
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#define MODE_2_PU_PLL BIT(2)
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#define MODE_2_PU_IVREF BIT(3)
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#define SATA_IF_CTRL 0x0050
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#define CTRL_PHY_SHUTDOWN BIT(9)
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static int phy_mvebu_sata_power_on(struct phy *phy)
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{
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struct priv *priv = phy_get_drvdata(phy);
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u32 reg;
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clk_prepare_enable(priv->clk);
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/* Enable PLL and IVREF */
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reg = readl(priv->base + SATA_PHY_MODE_2);
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reg |= (MODE_2_FORCE_PU_TX | MODE_2_FORCE_PU_RX |
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MODE_2_PU_PLL | MODE_2_PU_IVREF);
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writel(reg , priv->base + SATA_PHY_MODE_2);
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/* Enable PHY */
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reg = readl(priv->base + SATA_IF_CTRL);
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reg &= ~CTRL_PHY_SHUTDOWN;
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writel(reg, priv->base + SATA_IF_CTRL);
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clk_disable_unprepare(priv->clk);
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return 0;
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}
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static int phy_mvebu_sata_power_off(struct phy *phy)
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{
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struct priv *priv = phy_get_drvdata(phy);
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u32 reg;
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clk_prepare_enable(priv->clk);
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/* Disable PLL and IVREF */
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reg = readl(priv->base + SATA_PHY_MODE_2);
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reg &= ~(MODE_2_FORCE_PU_TX | MODE_2_FORCE_PU_RX |
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MODE_2_PU_PLL | MODE_2_PU_IVREF);
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writel(reg, priv->base + SATA_PHY_MODE_2);
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/* Disable PHY */
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reg = readl(priv->base + SATA_IF_CTRL);
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reg |= CTRL_PHY_SHUTDOWN;
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writel(reg, priv->base + SATA_IF_CTRL);
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clk_disable_unprepare(priv->clk);
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return 0;
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}
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static const struct phy_ops phy_mvebu_sata_ops = {
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.power_on = phy_mvebu_sata_power_on,
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.power_off = phy_mvebu_sata_power_off,
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.owner = THIS_MODULE,
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};
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static int phy_mvebu_sata_probe(struct platform_device *pdev)
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{
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struct phy_provider *phy_provider;
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struct resource *res;
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struct priv *priv;
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struct phy *phy;
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priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
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if (!priv)
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return -ENOMEM;
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res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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priv->base = devm_ioremap_resource(&pdev->dev, res);
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if (IS_ERR(priv->base))
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return PTR_ERR(priv->base);
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priv->clk = devm_clk_get(&pdev->dev, "sata");
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if (IS_ERR(priv->clk))
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return PTR_ERR(priv->clk);
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phy = devm_phy_create(&pdev->dev, NULL, &phy_mvebu_sata_ops);
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if (IS_ERR(phy))
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return PTR_ERR(phy);
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phy_set_drvdata(phy, priv);
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phy_provider = devm_of_phy_provider_register(&pdev->dev,
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of_phy_simple_xlate);
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if (IS_ERR(phy_provider))
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return PTR_ERR(phy_provider);
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/* The boot loader may of left it on. Turn it off. */
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phy_mvebu_sata_power_off(phy);
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return 0;
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}
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static const struct of_device_id phy_mvebu_sata_of_match[] = {
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{ .compatible = "marvell,mvebu-sata-phy" },
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{ },
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};
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MODULE_DEVICE_TABLE(of, phy_mvebu_sata_of_match);
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static struct platform_driver phy_mvebu_sata_driver = {
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.probe = phy_mvebu_sata_probe,
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.driver = {
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.name = "phy-mvebu-sata",
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.of_match_table = phy_mvebu_sata_of_match,
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}
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};
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module_platform_driver(phy_mvebu_sata_driver);
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MODULE_AUTHOR("Andrew Lunn <andrew@lunn.ch>");
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MODULE_DESCRIPTION("Marvell MVEBU SATA PHY driver");
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MODULE_LICENSE("GPL v2");
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