source: src/linux/universal/linux-4.9/drivers/usb/chipidea/ci_hdrc_msm.c @ 31859

Last change on this file since 31859 was 31859, checked in by brainslayer, 11 days ago

kernel update

File size: 3.0 KB
Line 
1/* Copyright (c) 2010, Code Aurora Forum. All rights reserved.
2 *
3 * This program is free software; you can redistribute it and/or modify
4 * it under the terms of the GNU General Public License version 2 and
5 * only version 2 as published by the Free Software Foundation.
6 */
7
8#include <linux/module.h>
9#include <linux/platform_device.h>
10#include <linux/pm_runtime.h>
11#include <linux/usb/msm_hsusb_hw.h>
12#include <linux/usb/ulpi.h>
13#include <linux/usb/gadget.h>
14#include <linux/usb/chipidea.h>
15
16#include "ci.h"
17
18#define MSM_USB_BASE    (ci->hw_bank.abs)
19
20static void ci_hdrc_msm_notify_event(struct ci_hdrc *ci, unsigned event)
21{
22        struct device *dev = ci->gadget.dev.parent;
23
24        switch (event) {
25        case CI_HDRC_CONTROLLER_RESET_EVENT:
26                dev_dbg(dev, "CI_HDRC_CONTROLLER_RESET_EVENT received\n");
27                /* use AHB transactor, allow posted data writes */
28                writel(0x8, USB_AHBMODE);
29                usb_phy_init(ci->usb_phy);
30                break;
31        case CI_HDRC_CONTROLLER_STOPPED_EVENT:
32                dev_dbg(dev, "CI_HDRC_CONTROLLER_STOPPED_EVENT received\n");
33                /*
34                 * Put the phy in non-driving mode. Otherwise host
35                 * may not detect soft-disconnection.
36                 */
37                usb_phy_notify_disconnect(ci->usb_phy, USB_SPEED_UNKNOWN);
38                break;
39        default:
40                dev_dbg(dev, "unknown ci_hdrc event\n");
41                break;
42        }
43}
44
45static struct ci_hdrc_platform_data ci_hdrc_msm_platdata = {
46        .name                   = "ci_hdrc_msm",
47        .capoffset              = DEF_CAPOFFSET,
48        .flags                  = CI_HDRC_REGS_SHARED |
49                                  CI_HDRC_DISABLE_STREAMING |
50                                  CI_HDRC_OVERRIDE_AHB_BURST,
51
52        .notify_event           = ci_hdrc_msm_notify_event,
53};
54
55static int ci_hdrc_msm_probe(struct platform_device *pdev)
56{
57        struct platform_device *plat_ci;
58        struct usb_phy *phy;
59
60        dev_dbg(&pdev->dev, "ci_hdrc_msm_probe\n");
61
62        /*
63         * OTG(PHY) driver takes care of PHY initialization, clock management,
64         * powering up VBUS, mapping of registers address space and power
65         * management.
66         */
67        phy = devm_usb_get_phy_by_phandle(&pdev->dev, "usb-phy", 0);
68        if (IS_ERR(phy))
69                return PTR_ERR(phy);
70
71        ci_hdrc_msm_platdata.usb_phy = phy;
72
73        plat_ci = ci_hdrc_add_device(&pdev->dev,
74                                pdev->resource, pdev->num_resources,
75                                &ci_hdrc_msm_platdata);
76        if (IS_ERR(plat_ci)) {
77                dev_err(&pdev->dev, "ci_hdrc_add_device failed!\n");
78                return PTR_ERR(plat_ci);
79        }
80
81        platform_set_drvdata(pdev, plat_ci);
82
83        pm_runtime_no_callbacks(&pdev->dev);
84        pm_runtime_enable(&pdev->dev);
85
86        return 0;
87}
88
89static int ci_hdrc_msm_remove(struct platform_device *pdev)
90{
91        struct platform_device *plat_ci = platform_get_drvdata(pdev);
92
93        pm_runtime_disable(&pdev->dev);
94        ci_hdrc_remove_device(plat_ci);
95
96        return 0;
97}
98
99static const struct of_device_id msm_ci_dt_match[] = {
100        { .compatible = "qcom,ci-hdrc", },
101        { }
102};
103MODULE_DEVICE_TABLE(of, msm_ci_dt_match);
104
105static struct platform_driver ci_hdrc_msm_driver = {
106        .probe = ci_hdrc_msm_probe,
107        .remove = ci_hdrc_msm_remove,
108        .driver = {
109                .name = "msm_hsusb",
110                .of_match_table = msm_ci_dt_match,
111        },
112};
113
114module_platform_driver(ci_hdrc_msm_driver);
115
116MODULE_ALIAS("platform:msm_hsusb");
117MODULE_ALIAS("platform:ci13xxx_msm");
118MODULE_LICENSE("GPL v2");
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