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path: root/drivers/usb/phy/phy-omap-control.c
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Diffstat (limited to 'drivers/usb/phy/phy-omap-control.c')
-rw-r--r--drivers/usb/phy/phy-omap-control.c319
1 files changed, 0 insertions, 319 deletions
diff --git a/drivers/usb/phy/phy-omap-control.c b/drivers/usb/phy/phy-omap-control.c
deleted file mode 100644
index e7253182e47..00000000000
--- a/drivers/usb/phy/phy-omap-control.c
+++ /dev/null
@@ -1,319 +0,0 @@
-/*
- * omap-control-usb.c - The USB part of control module.
- *
- * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com
- * 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.
- *
- * Author: Kishon Vijay Abraham I <kishon@ti.com>
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- */
-
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/slab.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
-#include <linux/err.h>
-#include <linux/io.h>
-#include <linux/clk.h>
-#include <linux/usb/omap_control_usb.h>
-
-/**
- * omap_control_usb_phy_power - power on/off the phy using control module reg
- * @dev: the control module device
- * @on: 0 or 1, based on powering on or off the PHY
- */
-void omap_control_usb_phy_power(struct device *dev, int on)
-{
- u32 val;
- unsigned long rate;
- struct omap_control_usb *control_usb;
-
- if (IS_ERR(dev) || !dev) {
- pr_err("%s: invalid device\n", __func__);
- return;
- }
-
- control_usb = dev_get_drvdata(dev);
- if (!control_usb) {
- dev_err(dev, "%s: invalid control usb device\n", __func__);
- return;
- }
-
- if (control_usb->type == OMAP_CTRL_TYPE_OTGHS)
- return;
-
- val = readl(control_usb->power);
-
- switch (control_usb->type) {
- case OMAP_CTRL_TYPE_USB2:
- if (on)
- val &= ~OMAP_CTRL_DEV_PHY_PD;
- else
- val |= OMAP_CTRL_DEV_PHY_PD;
- break;
-
- case OMAP_CTRL_TYPE_PIPE3:
- rate = clk_get_rate(control_usb->sys_clk);
- rate = rate/1000000;
-
- if (on) {
- val &= ~(OMAP_CTRL_USB_PWRCTL_CLK_CMD_MASK |
- OMAP_CTRL_USB_PWRCTL_CLK_FREQ_MASK);
- val |= OMAP_CTRL_USB3_PHY_TX_RX_POWERON <<
- OMAP_CTRL_USB_PWRCTL_CLK_CMD_SHIFT;
- val |= rate << OMAP_CTRL_USB_PWRCTL_CLK_FREQ_SHIFT;
- } else {
- val &= ~OMAP_CTRL_USB_PWRCTL_CLK_CMD_MASK;
- val |= OMAP_CTRL_USB3_PHY_TX_RX_POWEROFF <<
- OMAP_CTRL_USB_PWRCTL_CLK_CMD_SHIFT;
- }
- break;
-
- case OMAP_CTRL_TYPE_DRA7USB2:
- if (on)
- val &= ~OMAP_CTRL_USB2_PHY_PD;
- else
- val |= OMAP_CTRL_USB2_PHY_PD;
- break;
-
- case OMAP_CTRL_TYPE_AM437USB2:
- if (on) {
- val &= ~(AM437X_CTRL_USB2_PHY_PD |
- AM437X_CTRL_USB2_OTG_PD);
- val |= (AM437X_CTRL_USB2_OTGVDET_EN |
- AM437X_CTRL_USB2_OTGSESSEND_EN);
- } else {
- val &= ~(AM437X_CTRL_USB2_OTGVDET_EN |
- AM437X_CTRL_USB2_OTGSESSEND_EN);
- val |= (AM437X_CTRL_USB2_PHY_PD |
- AM437X_CTRL_USB2_OTG_PD);
- }
- break;
- default:
- dev_err(dev, "%s: type %d not recognized\n",
- __func__, control_usb->type);
- break;
- }
-
- writel(val, control_usb->power);
-}
-EXPORT_SYMBOL_GPL(omap_control_usb_phy_power);
-
-/**
- * omap_control_usb_host_mode - set AVALID, VBUSVALID and ID pin in grounded
- * @ctrl_usb: struct omap_control_usb *
- *
- * Writes to the mailbox register to notify the usb core that a usb
- * device has been connected.
- */
-static void omap_control_usb_host_mode(struct omap_control_usb *ctrl_usb)
-{
- u32 val;
-
- val = readl(ctrl_usb->otghs_control);
- val &= ~(OMAP_CTRL_DEV_IDDIG | OMAP_CTRL_DEV_SESSEND);
- val |= OMAP_CTRL_DEV_AVALID | OMAP_CTRL_DEV_VBUSVALID;
- writel(val, ctrl_usb->otghs_control);
-}
-
-/**
- * omap_control_usb_device_mode - set AVALID, VBUSVALID and ID pin in high
- * impedance
- * @ctrl_usb: struct omap_control_usb *
- *
- * Writes to the mailbox register to notify the usb core that it has been
- * connected to a usb host.
- */
-static void omap_control_usb_device_mode(struct omap_control_usb *ctrl_usb)
-{
- u32 val;
-
- val = readl(ctrl_usb->otghs_control);
- val &= ~OMAP_CTRL_DEV_SESSEND;
- val |= OMAP_CTRL_DEV_IDDIG | OMAP_CTRL_DEV_AVALID |
- OMAP_CTRL_DEV_VBUSVALID;
- writel(val, ctrl_usb->otghs_control);
-}
-
-/**
- * omap_control_usb_set_sessionend - Enable SESSIONEND and IDIG to high
- * impedance
- * @ctrl_usb: struct omap_control_usb *
- *
- * Writes to the mailbox register to notify the usb core it's now in
- * disconnected state.
- */
-static void omap_control_usb_set_sessionend(struct omap_control_usb *ctrl_usb)
-{
- u32 val;
-
- val = readl(ctrl_usb->otghs_control);
- val &= ~(OMAP_CTRL_DEV_AVALID | OMAP_CTRL_DEV_VBUSVALID);
- val |= OMAP_CTRL_DEV_IDDIG | OMAP_CTRL_DEV_SESSEND;
- writel(val, ctrl_usb->otghs_control);
-}
-
-/**
- * omap_control_usb_set_mode - Calls to functions to set USB in one of host mode
- * or device mode or to denote disconnected state
- * @dev: the control module device
- * @mode: The mode to which usb should be configured
- *
- * This is an API to write to the mailbox register to notify the usb core that
- * a usb device has been connected.
- */
-void omap_control_usb_set_mode(struct device *dev,
- enum omap_control_usb_mode mode)
-{
- struct omap_control_usb *ctrl_usb;
-
- if (IS_ERR(dev) || !dev)
- return;
-
- ctrl_usb = dev_get_drvdata(dev);
-
- if (!ctrl_usb) {
- dev_err(dev, "Invalid control usb device\n");
- return;
- }
-
- if (ctrl_usb->type != OMAP_CTRL_TYPE_OTGHS)
- return;
-
- switch (mode) {
- case USB_MODE_HOST:
- omap_control_usb_host_mode(ctrl_usb);
- break;
- case USB_MODE_DEVICE:
- omap_control_usb_device_mode(ctrl_usb);
- break;
- case USB_MODE_DISCONNECT:
- omap_control_usb_set_sessionend(ctrl_usb);
- break;
- default:
- dev_vdbg(dev, "invalid omap control usb mode\n");
- }
-}
-EXPORT_SYMBOL_GPL(omap_control_usb_set_mode);
-
-#ifdef CONFIG_OF
-
-static const enum omap_control_usb_type otghs_data = OMAP_CTRL_TYPE_OTGHS;
-static const enum omap_control_usb_type usb2_data = OMAP_CTRL_TYPE_USB2;
-static const enum omap_control_usb_type pipe3_data = OMAP_CTRL_TYPE_PIPE3;
-static const enum omap_control_usb_type dra7usb2_data = OMAP_CTRL_TYPE_DRA7USB2;
-static const enum omap_control_usb_type am437usb2_data = OMAP_CTRL_TYPE_AM437USB2;
-
-static const struct of_device_id omap_control_usb_id_table[] = {
- {
- .compatible = "ti,control-phy-otghs",
- .data = &otghs_data,
- },
- {
- .compatible = "ti,control-phy-usb2",
- .data = &usb2_data,
- },
- {
- .compatible = "ti,control-phy-pipe3",
- .data = &pipe3_data,
- },
- {
- .compatible = "ti,control-phy-dra7usb2",
- .data = &dra7usb2_data,
- },
- {
- .compatible = "ti,control-phy-am437usb2",
- .data = &am437usb2_data,
- },
- {},
-};
-MODULE_DEVICE_TABLE(of, omap_control_usb_id_table);
-#endif
-
-
-static int omap_control_usb_probe(struct platform_device *pdev)
-{
- struct resource *res;
- const struct of_device_id *of_id;
- struct omap_control_usb *control_usb;
-
- of_id = of_match_device(of_match_ptr(omap_control_usb_id_table),
- &pdev->dev);
- if (!of_id)
- return -EINVAL;
-
- control_usb = devm_kzalloc(&pdev->dev, sizeof(*control_usb),
- GFP_KERNEL);
- if (!control_usb) {
- dev_err(&pdev->dev, "unable to alloc memory for control usb\n");
- return -ENOMEM;
- }
-
- control_usb->dev = &pdev->dev;
- control_usb->type = *(enum omap_control_usb_type *)of_id->data;
-
- if (control_usb->type == OMAP_CTRL_TYPE_OTGHS) {
- res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
- "otghs_control");
- control_usb->otghs_control = devm_ioremap_resource(
- &pdev->dev, res);
- if (IS_ERR(control_usb->otghs_control))
- return PTR_ERR(control_usb->otghs_control);
- } else {
- res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
- "power");
- control_usb->power = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR(control_usb->power)) {
- dev_err(&pdev->dev, "Couldn't get power register\n");
- return PTR_ERR(control_usb->power);
- }
- }
-
- if (control_usb->type == OMAP_CTRL_TYPE_PIPE3) {
- control_usb->sys_clk = devm_clk_get(control_usb->dev,
- "sys_clkin");
- if (IS_ERR(control_usb->sys_clk)) {
- pr_err("%s: unable to get sys_clkin\n", __func__);
- return -EINVAL;
- }
- }
-
- dev_set_drvdata(control_usb->dev, control_usb);
-
- return 0;
-}
-
-static struct platform_driver omap_control_usb_driver = {
- .probe = omap_control_usb_probe,
- .driver = {
- .name = "omap-control-usb",
- .owner = THIS_MODULE,
- .of_match_table = of_match_ptr(omap_control_usb_id_table),
- },
-};
-
-static int __init omap_control_usb_init(void)
-{
- return platform_driver_register(&omap_control_usb_driver);
-}
-subsys_initcall(omap_control_usb_init);
-
-static void __exit omap_control_usb_exit(void)
-{
- platform_driver_unregister(&omap_control_usb_driver);
-}
-module_exit(omap_control_usb_exit);
-
-MODULE_ALIAS("platform: omap_control_usb");
-MODULE_AUTHOR("Texas Instruments Inc.");
-MODULE_DESCRIPTION("OMAP Control Module USB Driver");
-MODULE_LICENSE("GPL v2");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-25 03:13:26 +0000