forked from Minki/linux
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: Peter Griffin <peter.griffin@linaro.org> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
This commit is contained in:
Peter Griffin
Kishon Vijay Abraham I
parent
4eb8eb1d30
commit
fb954c48ae
@ -428,14 +428,6 @@ config PHY_STIH407_USB
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Enable this support to enable the picoPHY device used by USB2
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and USB3 controllers on STMicroelectronics STiH407 SoC families.
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config PHY_STIH41X_USB
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tristate "STMicroelectronics USB2 PHY driver for STiH41x series"
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depends on ARCH_STI
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select GENERIC_PHY
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help
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Enable this to support the USB transceiver that is part of
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STMicroelectronics STiH41x SoC series.
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config PHY_QCOM_UFS
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tristate "Qualcomm UFS PHY driver"
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depends on OF && ARCH_QCOM
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@ -49,7 +49,6 @@ obj-$(CONFIG_PHY_ST_SPEAR1310_MIPHY) += phy-spear1310-miphy.o
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obj-$(CONFIG_PHY_ST_SPEAR1340_MIPHY) += phy-spear1340-miphy.o
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obj-$(CONFIG_PHY_XGENE) += phy-xgene.o
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obj-$(CONFIG_PHY_STIH407_USB) += phy-stih407-usb.o
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obj-$(CONFIG_PHY_STIH41X_USB) += phy-stih41x-usb.o
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obj-$(CONFIG_PHY_QCOM_UFS) += phy-qcom-ufs.o
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obj-$(CONFIG_PHY_QCOM_UFS) += phy-qcom-ufs-qmp-20nm.o
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obj-$(CONFIG_PHY_QCOM_UFS) += phy-qcom-ufs-qmp-14nm.o
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@ -1,188 +0,0 @@
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/*
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* Copyright (C) 2014 STMicroelectronics
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*
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* STMicroelectronics PHY driver for STiH41x USB.
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*
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* Author: Maxime Coquelin <maxime.coquelin@st.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2, as
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* published by the Free Software Foundation.
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*
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*/
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#include <linux/platform_device.h>
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#include <linux/io.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/of_platform.h>
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#include <linux/clk.h>
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#include <linux/phy/phy.h>
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#include <linux/regmap.h>
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#include <linux/mfd/syscon.h>
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#define SYSCFG332 0x80
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#define SYSCFG2520 0x820
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/**
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* struct stih41x_usb_cfg - SoC specific PHY register mapping
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* @syscfg: Offset in syscfg registers bank
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* @cfg_mask: Bits mask for PHY configuration
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* @cfg: Static configuration value for PHY
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* @oscok: Notify the PHY oscillator clock is ready
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* Setting this bit enable the PHY
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*/
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struct stih41x_usb_cfg {
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u32 syscfg;
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u32 cfg_mask;
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u32 cfg;
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u32 oscok;
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};
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/**
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* struct stih41x_usb_phy - Private data for the PHY
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* @dev: device for this controller
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* @regmap: Syscfg registers bank in which PHY is configured
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* @cfg: SoC specific PHY register mapping
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* @clk: Oscillator used by the PHY
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*/
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struct stih41x_usb_phy {
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struct device *dev;
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struct regmap *regmap;
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const struct stih41x_usb_cfg *cfg;
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struct clk *clk;
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};
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static struct stih41x_usb_cfg stih415_usb_phy_cfg = {
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.syscfg = SYSCFG332,
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.cfg_mask = 0x3f,
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.cfg = 0x38,
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.oscok = BIT(6),
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};
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static struct stih41x_usb_cfg stih416_usb_phy_cfg = {
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.syscfg = SYSCFG2520,
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.cfg_mask = 0x33f,
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.cfg = 0x238,
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.oscok = BIT(6),
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};
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static int stih41x_usb_phy_init(struct phy *phy)
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{
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struct stih41x_usb_phy *phy_dev = phy_get_drvdata(phy);
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return regmap_update_bits(phy_dev->regmap, phy_dev->cfg->syscfg,
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phy_dev->cfg->cfg_mask, phy_dev->cfg->cfg);
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}
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static int stih41x_usb_phy_power_on(struct phy *phy)
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{
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struct stih41x_usb_phy *phy_dev = phy_get_drvdata(phy);
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int ret;
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ret = clk_prepare_enable(phy_dev->clk);
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if (ret) {
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dev_err(phy_dev->dev, "Failed to enable osc_phy clock\n");
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return ret;
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}
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ret = regmap_update_bits(phy_dev->regmap, phy_dev->cfg->syscfg,
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phy_dev->cfg->oscok, phy_dev->cfg->oscok);
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if (ret)
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clk_disable_unprepare(phy_dev->clk);
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return ret;
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}
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static int stih41x_usb_phy_power_off(struct phy *phy)
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{
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struct stih41x_usb_phy *phy_dev = phy_get_drvdata(phy);
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int ret;
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ret = regmap_update_bits(phy_dev->regmap, phy_dev->cfg->syscfg,
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phy_dev->cfg->oscok, 0);
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if (ret) {
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dev_err(phy_dev->dev, "Failed to clear oscok bit\n");
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return ret;
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}
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clk_disable_unprepare(phy_dev->clk);
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return 0;
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}
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static const struct phy_ops stih41x_usb_phy_ops = {
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.init = stih41x_usb_phy_init,
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.power_on = stih41x_usb_phy_power_on,
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.power_off = stih41x_usb_phy_power_off,
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.owner = THIS_MODULE,
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};
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static const struct of_device_id stih41x_usb_phy_of_match[];
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static int stih41x_usb_phy_probe(struct platform_device *pdev)
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{
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struct device_node *np = pdev->dev.of_node;
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const struct of_device_id *match;
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struct stih41x_usb_phy *phy_dev;
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struct device *dev = &pdev->dev;
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struct phy_provider *phy_provider;
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struct phy *phy;
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phy_dev = devm_kzalloc(dev, sizeof(*phy_dev), GFP_KERNEL);
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if (!phy_dev)
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return -ENOMEM;
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match = of_match_device(stih41x_usb_phy_of_match, &pdev->dev);
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if (!match)
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return -ENODEV;
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phy_dev->cfg = match->data;
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phy_dev->regmap = syscon_regmap_lookup_by_phandle(np, "st,syscfg");
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if (IS_ERR(phy_dev->regmap)) {
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dev_err(dev, "No syscfg phandle specified\n");
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return PTR_ERR(phy_dev->regmap);
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}
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phy_dev->clk = devm_clk_get(dev, "osc_phy");
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if (IS_ERR(phy_dev->clk)) {
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dev_err(dev, "osc_phy clk not found\n");
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return PTR_ERR(phy_dev->clk);
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}
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phy = devm_phy_create(dev, NULL, &stih41x_usb_phy_ops);
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if (IS_ERR(phy)) {
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dev_err(dev, "failed to create phy\n");
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return PTR_ERR(phy);
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}
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phy_dev->dev = dev;
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phy_set_drvdata(phy, phy_dev);
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phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
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return PTR_ERR_OR_ZERO(phy_provider);
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}
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static const struct of_device_id stih41x_usb_phy_of_match[] = {
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{ .compatible = "st,stih415-usb-phy", .data = &stih415_usb_phy_cfg },
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{ .compatible = "st,stih416-usb-phy", .data = &stih416_usb_phy_cfg },
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{ /* sentinel */ },
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};
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MODULE_DEVICE_TABLE(of, stih41x_usb_phy_of_match);
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static struct platform_driver stih41x_usb_phy_driver = {
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.probe = stih41x_usb_phy_probe,
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.driver = {
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.name = "stih41x-usb-phy",
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.of_match_table = stih41x_usb_phy_of_match,
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}
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};
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module_platform_driver(stih41x_usb_phy_driver);
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MODULE_AUTHOR("Maxime Coquelin <maxime.coquelin@st.com>");
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MODULE_DESCRIPTION("STMicroelectronics USB PHY driver for STiH41x series");
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MODULE_LICENSE("GPL v2");
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