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Commit fb954c48 authored by Peter Griffin's avatar Peter Griffin Committed by Kishon Vijay Abraham I
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phy: stih41x-usb: Remove usb phy driver and dt binding 


 documentation.

This phy is only used on STiH415/6 based silicon, and support for
these SoC's is being removed from the kernel.

Signed-off-by: default avatarPeter Griffin <peter.griffin@linaro.org>
Acked-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarKishon Vijay Abraham I <kishon@ti.com>
parent 4eb8eb1d

drivers/phy/Kconfig

+0 −8
Original line number Diff line number Diff line
@@ -428,14 +428,6 @@ config PHY_STIH407_USB 
	  Enable this support to enable the picoPHY device used by USB2

	  and USB3 controllers on STMicroelectronics STiH407 SoC families.



config PHY_STIH41X_USB

	tristate "STMicroelectronics USB2 PHY driver for STiH41x series"

	depends on ARCH_STI

	select GENERIC_PHY

	help

	  Enable this to support the USB transceiver that is part of

	  STMicroelectronics STiH41x SoC series.



config PHY_QCOM_UFS

	tristate "Qualcomm UFS PHY driver"

	depends on OF && ARCH_QCOM

drivers/phy/Makefile

+0 −1
Original line number Diff line number Diff line
@@ -49,7 +49,6 @@ obj-$(CONFIG_PHY_ST_SPEAR1310_MIPHY) += phy-spear1310-miphy.o 
obj-$(CONFIG_PHY_ST_SPEAR1340_MIPHY)	+= phy-spear1340-miphy.o

obj-$(CONFIG_PHY_XGENE)			+= phy-xgene.o

obj-$(CONFIG_PHY_STIH407_USB)		+= phy-stih407-usb.o

obj-$(CONFIG_PHY_STIH41X_USB)		+= phy-stih41x-usb.o

obj-$(CONFIG_PHY_QCOM_UFS) 	+= phy-qcom-ufs.o

obj-$(CONFIG_PHY_QCOM_UFS) 	+= phy-qcom-ufs-qmp-20nm.o

obj-$(CONFIG_PHY_QCOM_UFS) 	+= phy-qcom-ufs-qmp-14nm.o

drivers/phy/phy-stih41x-usb.c

deleted100644 → 0
+0 −188
Original line number Diff line number Diff line 
/*

 * Copyright (C) 2014 STMicroelectronics

 *

 * STMicroelectronics PHY driver for STiH41x USB.

 *

 * Author: Maxime Coquelin <maxime.coquelin@st.com>

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2, as

 * published by the Free Software Foundation.

 *

 */



#include <linux/platform_device.h>

#include <linux/io.h>

#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/of.h>

#include <linux/of_platform.h>

#include <linux/clk.h>

#include <linux/phy/phy.h>

#include <linux/regmap.h>

#include <linux/mfd/syscon.h>



#define SYSCFG332  0x80

#define SYSCFG2520 0x820



/**

 * struct stih41x_usb_cfg - SoC specific PHY register mapping

 * @syscfg: Offset in syscfg registers bank

 * @cfg_mask: Bits mask for PHY configuration

 * @cfg: Static configuration value for PHY

 * @oscok: Notify the PHY oscillator clock is ready

 *	   Setting this bit enable the PHY

 */

struct stih41x_usb_cfg {

	u32 syscfg;

	u32 cfg_mask;

	u32 cfg;

	u32 oscok;

};



/**

 * struct stih41x_usb_phy - Private data for the PHY

 * @dev: device for this controller

 * @regmap: Syscfg registers bank in which PHY is configured

 * @cfg: SoC specific PHY register mapping

 * @clk: Oscillator used by the PHY

 */

struct stih41x_usb_phy {

	struct device *dev;

	struct regmap *regmap;

	const struct stih41x_usb_cfg *cfg;

	struct clk *clk;

};



static struct stih41x_usb_cfg stih415_usb_phy_cfg = {

	.syscfg = SYSCFG332,

	.cfg_mask = 0x3f,

	.cfg = 0x38,

	.oscok = BIT(6),

};



static struct stih41x_usb_cfg stih416_usb_phy_cfg = {

	.syscfg = SYSCFG2520,

	.cfg_mask = 0x33f,

	.cfg = 0x238,

	.oscok = BIT(6),

};



static int stih41x_usb_phy_init(struct phy *phy)

{

	struct stih41x_usb_phy *phy_dev = phy_get_drvdata(phy);



	return regmap_update_bits(phy_dev->regmap, phy_dev->cfg->syscfg,

			   phy_dev->cfg->cfg_mask, phy_dev->cfg->cfg);

}



static int stih41x_usb_phy_power_on(struct phy *phy)

{

	struct stih41x_usb_phy *phy_dev = phy_get_drvdata(phy);

	int ret;



	ret = clk_prepare_enable(phy_dev->clk);

	if (ret) {

		dev_err(phy_dev->dev, "Failed to enable osc_phy clock\n");

		return ret;

	}



	ret = regmap_update_bits(phy_dev->regmap, phy_dev->cfg->syscfg,

				 phy_dev->cfg->oscok, phy_dev->cfg->oscok);

	if (ret)

		clk_disable_unprepare(phy_dev->clk);



	return ret;

}



static int stih41x_usb_phy_power_off(struct phy *phy)

{

	struct stih41x_usb_phy *phy_dev = phy_get_drvdata(phy);

	int ret;



	ret = regmap_update_bits(phy_dev->regmap, phy_dev->cfg->syscfg,

			phy_dev->cfg->oscok, 0);

	if (ret) {

		dev_err(phy_dev->dev, "Failed to clear oscok bit\n");

		return ret;

	}



	clk_disable_unprepare(phy_dev->clk);



	return 0;

}



static const struct phy_ops stih41x_usb_phy_ops = {

	.init		= stih41x_usb_phy_init,

	.power_on	= stih41x_usb_phy_power_on,

	.power_off	= stih41x_usb_phy_power_off,

	.owner		= THIS_MODULE,

};



static const struct of_device_id stih41x_usb_phy_of_match[];



static int stih41x_usb_phy_probe(struct platform_device *pdev)

{

	struct device_node *np = pdev->dev.of_node;

	const struct of_device_id *match;

	struct stih41x_usb_phy *phy_dev;

	struct device *dev = &pdev->dev;

	struct phy_provider *phy_provider;

	struct phy *phy;



	phy_dev = devm_kzalloc(dev, sizeof(*phy_dev), GFP_KERNEL);

	if (!phy_dev)

		return -ENOMEM;



	match = of_match_device(stih41x_usb_phy_of_match, &pdev->dev);

	if (!match)

		return -ENODEV;



	phy_dev->cfg = match->data;



	phy_dev->regmap = syscon_regmap_lookup_by_phandle(np, "st,syscfg");

	if (IS_ERR(phy_dev->regmap)) {

		dev_err(dev, "No syscfg phandle specified\n");

		return PTR_ERR(phy_dev->regmap);

	}



	phy_dev->clk = devm_clk_get(dev, "osc_phy");

	if (IS_ERR(phy_dev->clk)) {

		dev_err(dev, "osc_phy clk not found\n");

		return PTR_ERR(phy_dev->clk);

	}



	phy = devm_phy_create(dev, NULL, &stih41x_usb_phy_ops);



	if (IS_ERR(phy)) {

		dev_err(dev, "failed to create phy\n");

		return PTR_ERR(phy);

	}



	phy_dev->dev = dev;



	phy_set_drvdata(phy, phy_dev);



	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 stih41x_usb_phy_of_match[] = {

	{ .compatible = "st,stih415-usb-phy", .data = &stih415_usb_phy_cfg },

	{ .compatible = "st,stih416-usb-phy", .data = &stih416_usb_phy_cfg },

	{ /* sentinel */ },

};

MODULE_DEVICE_TABLE(of, stih41x_usb_phy_of_match);



static struct platform_driver stih41x_usb_phy_driver = {

	.probe	= stih41x_usb_phy_probe,

	.driver = {

		.name	= "stih41x-usb-phy",

		.of_match_table	= stih41x_usb_phy_of_match,

	}

};

module_platform_driver(stih41x_usb_phy_driver);



MODULE_AUTHOR("Maxime Coquelin <maxime.coquelin@st.com>");

MODULE_DESCRIPTION("STMicroelectronics USB PHY driver for STiH41x series");

MODULE_LICENSE("GPL v2");