| /* Copyright (c) 2010, Code Aurora Forum. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 and |
| * only version 2 as published by the Free Software Foundation. |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/platform_device.h> |
| #include <linux/pm_runtime.h> |
| #include <linux/usb/msm_hsusb_hw.h> |
| #include <linux/usb/ulpi.h> |
| #include <linux/usb/gadget.h> |
| #include <linux/usb/chipidea.h> |
| |
| #include "ci.h" |
| |
| #define MSM_USB_BASE (ci->hw_bank.abs) |
| |
| static int ci_hdrc_msm_notify_event(struct ci_hdrc *ci, unsigned event) |
| { |
| struct device *dev = ci->gadget.dev.parent; |
| |
| switch (event) { |
| case CI_HDRC_CONTROLLER_RESET_EVENT: |
| dev_dbg(dev, "CI_HDRC_CONTROLLER_RESET_EVENT received\n"); |
| writel(0, USB_AHBBURST); |
| writel(0, USB_AHBMODE); |
| usb_phy_init(ci->usb_phy); |
| break; |
| case CI_HDRC_CONTROLLER_STOPPED_EVENT: |
| dev_dbg(dev, "CI_HDRC_CONTROLLER_STOPPED_EVENT received\n"); |
| /* |
| * Put the phy in non-driving mode. Otherwise host |
| * may not detect soft-disconnection. |
| */ |
| usb_phy_notify_disconnect(ci->usb_phy, USB_SPEED_UNKNOWN); |
| break; |
| default: |
| dev_dbg(dev, "unknown ci_hdrc event\n"); |
| break; |
| } |
| |
| return 0; |
| } |
| |
| static struct ci_hdrc_platform_data ci_hdrc_msm_platdata = { |
| .name = "ci_hdrc_msm", |
| .capoffset = DEF_CAPOFFSET, |
| .flags = CI_HDRC_REGS_SHARED | |
| CI_HDRC_DISABLE_STREAMING, |
| |
| .notify_event = ci_hdrc_msm_notify_event, |
| }; |
| |
| static int ci_hdrc_msm_probe(struct platform_device *pdev) |
| { |
| struct platform_device *plat_ci; |
| struct usb_phy *phy; |
| |
| dev_dbg(&pdev->dev, "ci_hdrc_msm_probe\n"); |
| |
| /* |
| * OTG(PHY) driver takes care of PHY initialization, clock management, |
| * powering up VBUS, mapping of registers address space and power |
| * management. |
| */ |
| phy = devm_usb_get_phy_by_phandle(&pdev->dev, "usb-phy", 0); |
| if (IS_ERR(phy)) |
| return PTR_ERR(phy); |
| |
| ci_hdrc_msm_platdata.usb_phy = phy; |
| |
| plat_ci = ci_hdrc_add_device(&pdev->dev, |
| pdev->resource, pdev->num_resources, |
| &ci_hdrc_msm_platdata); |
| if (IS_ERR(plat_ci)) { |
| dev_err(&pdev->dev, "ci_hdrc_add_device failed!\n"); |
| return PTR_ERR(plat_ci); |
| } |
| |
| platform_set_drvdata(pdev, plat_ci); |
| |
| pm_runtime_no_callbacks(&pdev->dev); |
| pm_runtime_enable(&pdev->dev); |
| |
| return 0; |
| } |
| |
| static int ci_hdrc_msm_remove(struct platform_device *pdev) |
| { |
| struct platform_device *plat_ci = platform_get_drvdata(pdev); |
| |
| pm_runtime_disable(&pdev->dev); |
| ci_hdrc_remove_device(plat_ci); |
| |
| return 0; |
| } |
| |
| static const struct of_device_id msm_ci_dt_match[] = { |
| { .compatible = "qcom,ci-hdrc", }, |
| { } |
| }; |
| MODULE_DEVICE_TABLE(of, msm_ci_dt_match); |
| |
| static struct platform_driver ci_hdrc_msm_driver = { |
| .probe = ci_hdrc_msm_probe, |
| .remove = ci_hdrc_msm_remove, |
| .driver = { |
| .name = "msm_hsusb", |
| .of_match_table = msm_ci_dt_match, |
| }, |
| }; |
| |
| module_platform_driver(ci_hdrc_msm_driver); |
| |
| MODULE_ALIAS("platform:msm_hsusb"); |
| MODULE_ALIAS("platform:ci13xxx_msm"); |
| MODULE_LICENSE("GPL v2"); |