tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
fork
Configure Feed
Select the types of activity you want to include in your feed.
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 int (*hardware_exit)(struct platform_device *pdev);
66
67 /*
68 * option:
69 *
70 * for board specific clock control
71 */
72 int (*power_ctrl)(struct platform_device *pdev,
73 void __iomem *base, int enable);
74
75 /*
76 * option:
77 *
78 * Phy reset for platform
79 */
80 int (*phy_reset)(struct platform_device *pdev);
81
82 /*
83 * get USB ID function
84 * - USBHS_HOST
85 * - USBHS_GADGET
86 */
87 int (*get_id)(struct platform_device *pdev);
88
89 /*
90 * get VBUS status function.
91 */
92 int (*get_vbus)(struct platform_device *pdev);
93
94 /*
95 * option:
96 *
97 * VBUS control is needed for Host
98 */
99 int (*set_vbus)(struct platform_device *pdev, int enable);
100};
101
102/*
103 * parameters for renesas usbhs
104 *
105 * some register needs USB chip specific parameters.
106 * This struct show it to driver
107 */
108struct renesas_usbhs_driver_param {
109 /*
110 * pipe settings
111 */
112 u32 *pipe_type; /* array of USB_ENDPOINT_XFER_xxx (from ep0) */
113 int pipe_size; /* pipe_type array size */
114
115 /*
116 * option:
117 *
118 * for BUSWAIT :: BWAIT
119 * see
120 * renesas_usbhs/common.c :: usbhsc_set_buswait()
121 * */
122 int buswait_bwait;
123
124 /*
125 * option:
126 *
127 * delay time from notify_hotplug callback
128 */
129 int detection_delay; /* msec */
130
131 /*
132 * option:
133 *
134 * dma id for dmaengine
135 * The data transfer direction on D0FIFO/D1FIFO should be
136 * fixed for keeping consistency.
137 * So, the platform id settings will be..
138 * .d0_tx_id = xx_TX,
139 * .d1_rx_id = xx_RX,
140 * or
141 * .d1_tx_id = xx_TX,
142 * .d0_rx_id = xx_RX,
143 */
144 int d0_tx_id;
145 int d0_rx_id;
146 int d1_tx_id;
147 int d1_rx_id;
148
149 /*
150 * option:
151 *
152 * pio <--> dma border.
153 */
154 int pio_dma_border; /* default is 64byte */
155
156 u32 type;
157 u32 enable_gpio;
158
159 /*
160 * option:
161 */
162 u32 has_otg:1; /* for controlling PWEN/EXTLP */
163 u32 has_sudmac:1; /* for SUDMAC */
164};
165
166#define USBHS_TYPE_R8A7790 1
167#define USBHS_TYPE_R8A7791 2
168
169/*
170 * option:
171 *
172 * platform information for renesas_usbhs driver.
173 */
174struct renesas_usbhs_platform_info {
175 /*
176 * option:
177 *
178 * platform set these functions before
179 * call platform_add_devices if needed
180 */
181 struct renesas_usbhs_platform_callback platform_callback;
182
183 /*
184 * driver set these callback functions pointer.
185 * platform can use it on callback functions
186 */
187 struct renesas_usbhs_driver_callback driver_callback;
188
189 /*
190 * option:
191 *
192 * driver use these param for some register
193 */
194 struct renesas_usbhs_driver_param driver_param;
195};
196
197/*
198 * macro for platform
199 */
200#define renesas_usbhs_get_info(pdev)\
201 ((struct renesas_usbhs_platform_info *)(pdev)->dev.platform_data)
202
203#define renesas_usbhs_call_notify_hotplug(pdev) \
204 ({ \
205 struct renesas_usbhs_driver_callback *dc; \
206 dc = &(renesas_usbhs_get_info(pdev)->driver_callback); \
207 if (dc && dc->notify_hotplug) \
208 dc->notify_hotplug(pdev); \
209 })
210#endif /* RENESAS_USB_H */