tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1/*
2 * Renesas USB
3 *
4 * Copyright (C) 2011 Renesas Solutions Corp.
5 * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
6 *
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU General Public License for more details.
11 *
12 * You should have received a copy of the GNU General Public License
13 * along with this program; if not, write to the Free Software
14 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
15 *
16 */
17#ifndef RENESAS_USB_H
18#define RENESAS_USB_H
19#include <linux/platform_device.h>
20#include <linux/usb/ch9.h>
21
22/*
23 * module type
24 *
25 * it will be return value from get_id
26 */
27enum {
28 USBHS_HOST = 0,
29 USBHS_GADGET,
30 USBHS_MAX,
31};
32
33/*
34 * callback functions table for driver
35 *
36 * These functions are called from platform for driver.
37 * Callback function's pointer will be set before
38 * renesas_usbhs_platform_callback :: hardware_init was called
39 */
40struct renesas_usbhs_driver_callback {
41 int (*notify_hotplug)(struct platform_device *pdev);
42};
43
44/*
45 * callback functions for platform
46 *
47 * These functions are called from driver for platform
48 */
49struct renesas_usbhs_platform_callback {
50
51 /*
52 * option:
53 *
54 * Hardware init function for platform.
55 * it is called when driver was probed.
56 */
57 int (*hardware_init)(struct platform_device *pdev);
58
59 /*
60 * option:
61 *
62 * Hardware exit function for platform.
63 * it is called when driver was removed
64 */
65 void (*hardware_exit)(struct platform_device *pdev);
66
67 /*
68 * option:
69 *
70 * Phy reset for platform
71 */
72 void (*phy_reset)(struct platform_device *pdev);
73
74 /*
75 * get USB ID function
76 * - USBHS_HOST
77 * - USBHS_GADGET
78 */
79 int (*get_id)(struct platform_device *pdev);
80
81 /*
82 * get VBUS status function.
83 */
84 int (*get_vbus)(struct platform_device *pdev);
85};
86
87/*
88 * parameters for renesas usbhs
89 *
90 * some register needs USB chip specific parameters.
91 * This struct show it to driver
92 */
93struct renesas_usbhs_driver_param {
94 /*
95 * pipe settings
96 */
97 u32 *pipe_type; /* array of USB_ENDPOINT_XFER_xxx (from ep0) */
98 int pipe_size; /* pipe_type array size */
99
100 /*
101 * option:
102 *
103 * for BUSWAIT :: BWAIT
104 * */
105 int buswait_bwait;
106
107 /*
108 * option:
109 *
110 * delay time from notify_hotplug callback
111 */
112 int detection_delay;
113
114 /*
115 * option:
116 *
117 * dma id for dmaengine
118 */
119 int d0_tx_id;
120 int d0_rx_id;
121 int d1_tx_id;
122 int d1_rx_id;
123
124 /*
125 * option:
126 *
127 * pio <--> dma border.
128 */
129 int pio_dma_border; /* default is 64byte */
130};
131
132/*
133 * option:
134 *
135 * platform information for renesas_usbhs driver.
136 */
137struct renesas_usbhs_platform_info {
138 /*
139 * option:
140 *
141 * platform set these functions before
142 * call platform_add_devices if needed
143 */
144 struct renesas_usbhs_platform_callback platform_callback;
145
146 /*
147 * driver set these callback functions pointer.
148 * platform can use it on callback functions
149 */
150 struct renesas_usbhs_driver_callback driver_callback;
151
152 /*
153 * option:
154 *
155 * driver use these param for some register
156 */
157 struct renesas_usbhs_driver_param driver_param;
158};
159
160/*
161 * macro for platform
162 */
163#define renesas_usbhs_get_info(pdev)\
164 ((struct renesas_usbhs_platform_info *)(pdev)->dev.platform_data)
165
166#define renesas_usbhs_call_notify_hotplug(pdev) \
167 ({ \
168 struct renesas_usbhs_driver_callback *dc; \
169 dc = &(renesas_usbhs_get_info(pdev)->driver_callback); \
170 if (dc && dc->notify_hotplug) \
171 dc->notify_hotplug(pdev); \
172 })
173#endif /* RENESAS_USB_H */