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33f82f38 PK |
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. | |
33f82f38 PK |
6 | */ |
7 | ||
8 | #include <linux/module.h> | |
9 | #include <linux/platform_device.h> | |
2d0cdcc5 | 10 | #include <linux/pm_runtime.h> |
33f82f38 PK |
11 | #include <linux/usb/msm_hsusb_hw.h> |
12 | #include <linux/usb/ulpi.h> | |
13 | ||
14 | #include "ci13xxx_udc.c" | |
15 | ||
16 | #define MSM_USB_BASE (udc->regs) | |
17 | ||
18 | static irqreturn_t msm_udc_irq(int irq, void *data) | |
19 | { | |
20 | return udc_irq(); | |
21 | } | |
22 | ||
23 | static void ci13xxx_msm_notify_event(struct ci13xxx *udc, unsigned event) | |
24 | { | |
25 | struct device *dev = udc->gadget.dev.parent; | |
26 | int val; | |
27 | ||
28 | switch (event) { | |
29 | case CI13XXX_CONTROLLER_RESET_EVENT: | |
30 | dev_dbg(dev, "CI13XXX_CONTROLLER_RESET_EVENT received\n"); | |
31 | writel(0, USB_AHBBURST); | |
32 | writel(0, USB_AHBMODE); | |
33 | break; | |
34 | case CI13XXX_CONTROLLER_STOPPED_EVENT: | |
35 | dev_dbg(dev, "CI13XXX_CONTROLLER_STOPPED_EVENT received\n"); | |
36 | /* | |
37 | * Put the transceiver in non-driving mode. Otherwise host | |
38 | * may not detect soft-disconnection. | |
39 | */ | |
40 | val = otg_io_read(udc->transceiver, ULPI_FUNC_CTRL); | |
41 | val &= ~ULPI_FUNC_CTRL_OPMODE_MASK; | |
42 | val |= ULPI_FUNC_CTRL_OPMODE_NONDRIVING; | |
43 | otg_io_write(udc->transceiver, val, ULPI_FUNC_CTRL); | |
44 | break; | |
45 | default: | |
46 | dev_dbg(dev, "unknown ci13xxx_udc event\n"); | |
47 | break; | |
48 | } | |
49 | } | |
50 | ||
51 | static struct ci13xxx_udc_driver ci13xxx_msm_udc_driver = { | |
52 | .name = "ci13xxx_msm", | |
53 | .flags = CI13XXX_REGS_SHARED | | |
54 | CI13XXX_REQUIRE_TRANSCEIVER | | |
55 | CI13XXX_PULLUP_ON_VBUS | | |
56 | CI13XXX_DISABLE_STREAMING, | |
57 | ||
58 | .notify_event = ci13xxx_msm_notify_event, | |
59 | }; | |
60 | ||
61 | static int ci13xxx_msm_probe(struct platform_device *pdev) | |
62 | { | |
63 | struct resource *res; | |
64 | void __iomem *regs; | |
65 | int irq; | |
66 | int ret; | |
67 | ||
68 | dev_dbg(&pdev->dev, "ci13xxx_msm_probe\n"); | |
69 | ||
70 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
71 | if (!res) { | |
72 | dev_err(&pdev->dev, "failed to get platform resource mem\n"); | |
73 | return -ENXIO; | |
74 | } | |
75 | ||
76 | regs = ioremap(res->start, resource_size(res)); | |
77 | if (!regs) { | |
78 | dev_err(&pdev->dev, "ioremap failed\n"); | |
79 | return -ENOMEM; | |
80 | } | |
81 | ||
82 | ret = udc_probe(&ci13xxx_msm_udc_driver, &pdev->dev, regs); | |
83 | if (ret < 0) { | |
84 | dev_err(&pdev->dev, "udc_probe failed\n"); | |
85 | goto iounmap; | |
86 | } | |
87 | ||
88 | irq = platform_get_irq(pdev, 0); | |
89 | if (irq < 0) { | |
90 | dev_err(&pdev->dev, "IRQ not found\n"); | |
91 | ret = -ENXIO; | |
92 | goto udc_remove; | |
93 | } | |
94 | ||
95 | ret = request_irq(irq, msm_udc_irq, IRQF_SHARED, pdev->name, pdev); | |
96 | if (ret < 0) { | |
97 | dev_err(&pdev->dev, "request_irq failed\n"); | |
98 | goto udc_remove; | |
99 | } | |
100 | ||
2d0cdcc5 PK |
101 | pm_runtime_no_callbacks(&pdev->dev); |
102 | pm_runtime_enable(&pdev->dev); | |
103 | ||
33f82f38 PK |
104 | return 0; |
105 | ||
106 | udc_remove: | |
107 | udc_remove(); | |
108 | iounmap: | |
109 | iounmap(regs); | |
110 | ||
111 | return ret; | |
112 | } | |
113 | ||
114 | static struct platform_driver ci13xxx_msm_driver = { | |
115 | .probe = ci13xxx_msm_probe, | |
116 | .driver = { .name = "msm_hsusb", }, | |
117 | }; | |
86081d7b | 118 | MODULE_ALIAS("platform:msm_hsusb"); |
33f82f38 PK |
119 | |
120 | static int __init ci13xxx_msm_init(void) | |
121 | { | |
122 | return platform_driver_register(&ci13xxx_msm_driver); | |
123 | } | |
124 | module_init(ci13xxx_msm_init); | |
4703d2e9 MKB |
125 | |
126 | MODULE_LICENSE("GPL v2"); |