On Wed, Nov 18, 2015 at 03:35:23PM +0800, Zhangfei Gao wrote:
> Support hi6220 use phy for HiKey board
>
> Signed-off-by: Zhangfei Gao <zhangfei.gao@xxxxxxxxxx>
> ---
> .../devicetree/bindings/phy/phy-hi6220-usb.txt | 16 ++
For the binding:
Acked-by: Rob Herring <robh@xxxxxxxxxx>
> drivers/phy/Kconfig | 9 ++
> drivers/phy/Makefile | 1 +
> drivers/phy/phy-hi6220-usb.c | 168 +++++++++++++++++++++
> 4 files changed, 194 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/phy/phy-hi6220-usb.txt
> create mode 100644 drivers/phy/phy-hi6220-usb.c
>
> diff --git a/Documentation/devicetree/bindings/phy/phy-hi6220-usb.txt b/Documentation/devicetree/bindings/phy/phy-hi6220-usb.txt
> new file mode 100644
> index 0000000..f17a56e
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/phy/phy-hi6220-usb.txt
> @@ -0,0 +1,16 @@
> +Hisilicon hi6220 usb PHY
> +-----------------------
> +
> +Required properties:
> +- compatible: should be "hisilicon,hi6220-usb-phy"
> +- #phy-cells: must be 0
> +- hisilicon,peripheral-syscon: phandle of syscon used to control phy.
> +Refer to phy/phy-bindings.txt for the generic PHY binding properties
> +
> +Example:
> + usb_phy: usbphy {
> + compatible = "hisilicon,hi6220-usb-phy";
> + #phy-cells = <0>;
> + phy-supply = <&fixed_5v_hub>;
> + hisilicon,peripheral-syscon = <&sys_ctrl>;
> + };
> diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig
> index 47da573..c91a612 100644
> --- a/drivers/phy/Kconfig
> +++ b/drivers/phy/Kconfig
> @@ -206,6 +206,15 @@ config PHY_HIX5HD2_SATA
> help
> Support for SATA PHY on Hisilicon hix5hd2 Soc.
>
> +config PHY_HI6220_USB
> + tristate "hi6220 USB PHY support"
> + select GENERIC_PHY
> + select MFD_SYSCON
> + help
> + Enable this to support the HISILICON HI6220 USB PHY.
> +
> + To compile this driver as a module, choose M here.
> +
> config PHY_SUN4I_USB
> tristate "Allwinner sunxi SoC USB PHY driver"
> depends on ARCH_SUNXI && HAS_IOMEM && OF
> diff --git a/drivers/phy/Makefile b/drivers/phy/Makefile
> index a5b18c1..0c5ccc9 100644
> --- a/drivers/phy/Makefile
> +++ b/drivers/phy/Makefile
> @@ -23,6 +23,7 @@ obj-$(CONFIG_TI_PIPE3) += phy-ti-pipe3.o
> obj-$(CONFIG_TWL4030_USB) += phy-twl4030-usb.o
> obj-$(CONFIG_PHY_EXYNOS5250_SATA) += phy-exynos5250-sata.o
> obj-$(CONFIG_PHY_HIX5HD2_SATA) += phy-hix5hd2-sata.o
> +obj-$(CONFIG_PHY_HI6220_USB) += phy-hi6220-usb.o
> obj-$(CONFIG_PHY_SUN4I_USB) += phy-sun4i-usb.o
> obj-$(CONFIG_PHY_SUN9I_USB) += phy-sun9i-usb.o
> obj-$(CONFIG_PHY_SAMSUNG_USB2) += phy-exynos-usb2.o
> diff --git a/drivers/phy/phy-hi6220-usb.c b/drivers/phy/phy-hi6220-usb.c
> new file mode 100644
> index 0000000..b2141cb
> --- /dev/null
> +++ b/drivers/phy/phy-hi6220-usb.c
> @@ -0,0 +1,168 @@
> +/*
> + * Copyright (c) 2015 Linaro Ltd.
> + * Copyright (c) 2015 Hisilicon Limited.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + */
> +
> +#include <linux/mfd/syscon.h>
> +#include <linux/module.h>
> +#include <linux/platform_device.h>
> +#include <linux/phy/phy.h>
> +#include <linux/regmap.h>
> +
> +#define SC_PERIPH_CTRL4 0x00c
> +
> +#define CTRL4_PICO_SIDDQ BIT(6)
> +#define CTRL4_PICO_OGDISABLE BIT(8)
> +#define CTRL4_PICO_VBUSVLDEXT BIT(10)
> +#define CTRL4_PICO_VBUSVLDEXTSEL BIT(11)
> +#define CTRL4_OTG_PHY_SEL BIT(21)
> +
> +#define SC_PERIPH_CTRL5 0x010
> +
> +#define CTRL5_USBOTG_RES_SEL BIT(3)
> +#define CTRL5_PICOPHY_ACAENB BIT(4)
> +#define CTRL5_PICOPHY_BC_MODE BIT(5)
> +#define CTRL5_PICOPHY_CHRGSEL BIT(6)
> +#define CTRL5_PICOPHY_VDATSRCEND BIT(7)
> +#define CTRL5_PICOPHY_VDATDETENB BIT(8)
> +#define CTRL5_PICOPHY_DCDENB BIT(9)
> +#define CTRL5_PICOPHY_IDDIG BIT(10)
> +
> +#define SC_PERIPH_CTRL8 0x018
> +#define SC_PERIPH_RSTEN0 0x300
> +#define SC_PERIPH_RSTDIS0 0x304
> +
> +#define RST0_USBOTG_BUS BIT(4)
> +#define RST0_POR_PICOPHY BIT(5)
> +#define RST0_USBOTG BIT(6)
> +#define RST0_USBOTG_32K BIT(7)
> +
> +#define EYE_PATTERN_PARA 0x7053348c
> +
> +struct hi6220_priv {
> + struct regmap *reg;
> + struct device *dev;
> +};
> +
> +static void hi6220_phy_init(struct hi6220_priv *priv)
> +{
> + struct regmap *reg = priv->reg;
> + u32 val, mask;
> +
> + val = RST0_USBOTG_BUS | RST0_POR_PICOPHY |
> + RST0_USBOTG | RST0_USBOTG_32K;
> + mask = val;
> + regmap_update_bits(reg, SC_PERIPH_RSTEN0, mask, val);
> + regmap_update_bits(reg, SC_PERIPH_RSTDIS0, mask, val);
> +}
> +
> +static int hi6220_phy_setup(struct hi6220_priv *priv, bool on)
> +{
> + struct regmap *reg = priv->reg;
> + u32 val, mask;
> + int ret;
> +
> + if (on) {
> + val = CTRL5_USBOTG_RES_SEL | CTRL5_PICOPHY_ACAENB;
> + mask = val | CTRL5_PICOPHY_BC_MODE;
> + ret = regmap_update_bits(reg, SC_PERIPH_CTRL5, mask, val);
> + if (ret)
> + goto out;
> +
> + val = CTRL4_PICO_VBUSVLDEXT | CTRL4_PICO_VBUSVLDEXTSEL |
> + CTRL4_OTG_PHY_SEL;
> + mask = val | CTRL4_PICO_SIDDQ | CTRL4_PICO_OGDISABLE;
> + ret = regmap_update_bits(reg, SC_PERIPH_CTRL4, mask, val);
> + if (ret)
> + goto out;
> +
> + ret = regmap_write(reg, SC_PERIPH_CTRL8, EYE_PATTERN_PARA);
> + if (ret)
> + goto out;
> + } else {
> + val = CTRL4_PICO_SIDDQ;
> + mask = val;
> + ret = regmap_update_bits(reg, SC_PERIPH_CTRL4, mask, val);
> + if (ret)
> + goto out;
> + }
> +
> + return 0;
> +out:
> + dev_err(priv->dev, "failed to setup phy ret: %d\n", ret);
> + return ret;
> +}
> +
> +static int hi6220_phy_start(struct phy *phy)
> +{
> + struct hi6220_priv *priv = phy_get_drvdata(phy);
> +
> + return hi6220_phy_setup(priv, true);
> +}
> +
> +static int hi6220_phy_exit(struct phy *phy)
> +{
> + struct hi6220_priv *priv = phy_get_drvdata(phy);
> +
> + return hi6220_phy_setup(priv, false);
> +}
> +
> +static struct phy_ops hi6220_phy_ops = {
> + .init = hi6220_phy_start,
> + .exit = hi6220_phy_exit,
> + .owner = THIS_MODULE,
> +};
> +
> +static int hi6220_phy_probe(struct platform_device *pdev)
> +{
> + struct phy_provider *phy_provider;
> + struct device *dev = &pdev->dev;
> + struct phy *phy;
> + struct hi6220_priv *priv;
> +
> + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
> + if (!priv)
> + return -ENOMEM;
> +
> + priv->dev = dev;
> + priv->reg = syscon_regmap_lookup_by_phandle(dev->of_node,
> + "hisilicon,peripheral-syscon");
> + if (IS_ERR(priv->reg)) {
> + dev_err(dev, "no hisilicon,peripheral-syscon\n");
> + return PTR_ERR(priv->reg);
> + }
> +
> + hi6220_phy_init(priv);
> +
> + phy = devm_phy_create(dev, NULL, &hi6220_phy_ops);
> + if (IS_ERR(phy))
> + return PTR_ERR(phy);
> +
> + phy_set_drvdata(phy, priv);
> + phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
> + return PTR_ERR_OR_ZERO(phy_provider);
> +}
> +
> +static const struct of_device_id hi6220_phy_of_match[] = {
> + {.compatible = "hisilicon,hi6220-usb-phy",},
> + { },
> +};
> +MODULE_DEVICE_TABLE(of, hi6220_phy_of_match);
> +
> +static struct platform_driver hi6220_phy_driver = {
> + .probe = hi6220_phy_probe,
> + .driver = {
> + .name = "hi6220-usb-phy",
> + .of_match_table = hi6220_phy_of_match,
> + }
> +};
> +module_platform_driver(hi6220_phy_driver);
> +
> +MODULE_DESCRIPTION("HISILICON HI6220 USB PHY driver");
> +MODULE_ALIAS("platform:hi6220-usb-phy");
> +MODULE_LICENSE("GPL");
> --
> 1.9.1
>
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