Root/
1 | /* |
2 | * camera image capture (abstract) bus driver header |
3 | * |
4 | * Copyright (C) 2006, Sascha Hauer, Pengutronix |
5 | * Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de> |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify |
8 | * it under the terms of the GNU General Public License version 2 as |
9 | * published by the Free Software Foundation. |
10 | */ |
11 | |
12 | #ifndef SOC_CAMERA_H |
13 | #define SOC_CAMERA_H |
14 | |
15 | #include <linux/device.h> |
16 | #include <linux/mutex.h> |
17 | #include <linux/pm.h> |
18 | #include <linux/videodev2.h> |
19 | #include <media/videobuf-core.h> |
20 | #include <media/videobuf2-core.h> |
21 | #include <media/v4l2-device.h> |
22 | |
23 | extern struct bus_type soc_camera_bus_type; |
24 | |
25 | struct file; |
26 | |
27 | struct soc_camera_device { |
28 | struct list_head list; |
29 | struct device dev; |
30 | struct device *pdev; /* Platform device */ |
31 | s32 user_width; |
32 | s32 user_height; |
33 | u32 bytesperline; /* for padding, zero if unused */ |
34 | u32 sizeimage; |
35 | enum v4l2_colorspace colorspace; |
36 | unsigned char iface; /* Host number */ |
37 | unsigned char devnum; /* Device number per host */ |
38 | struct soc_camera_sense *sense; /* See comment in struct definition */ |
39 | struct soc_camera_ops *ops; |
40 | struct video_device *vdev; |
41 | const struct soc_camera_format_xlate *current_fmt; |
42 | struct soc_camera_format_xlate *user_formats; |
43 | int num_user_formats; |
44 | enum v4l2_field field; /* Preserve field over close() */ |
45 | void *host_priv; /* Per-device host private data */ |
46 | /* soc_camera.c private count. Only accessed with .video_lock held */ |
47 | int use_count; |
48 | struct mutex video_lock; /* Protects device data */ |
49 | struct file *streamer; /* stream owner */ |
50 | union { |
51 | struct videobuf_queue vb_vidq; |
52 | struct vb2_queue vb2_vidq; |
53 | }; |
54 | }; |
55 | |
56 | struct soc_camera_host { |
57 | struct v4l2_device v4l2_dev; |
58 | struct list_head list; |
59 | unsigned char nr; /* Host number */ |
60 | void *priv; |
61 | const char *drv_name; |
62 | struct soc_camera_host_ops *ops; |
63 | }; |
64 | |
65 | struct soc_camera_host_ops { |
66 | struct module *owner; |
67 | int (*add)(struct soc_camera_device *); |
68 | void (*remove)(struct soc_camera_device *); |
69 | int (*suspend)(struct soc_camera_device *, pm_message_t); |
70 | int (*resume)(struct soc_camera_device *); |
71 | /* |
72 | * .get_formats() is called for each client device format, but |
73 | * .put_formats() is only called once. Further, if any of the calls to |
74 | * .get_formats() fail, .put_formats() will not be called at all, the |
75 | * failing .get_formats() must then clean up internally. |
76 | */ |
77 | int (*get_formats)(struct soc_camera_device *, unsigned int, |
78 | struct soc_camera_format_xlate *); |
79 | void (*put_formats)(struct soc_camera_device *); |
80 | int (*cropcap)(struct soc_camera_device *, struct v4l2_cropcap *); |
81 | int (*get_crop)(struct soc_camera_device *, struct v4l2_crop *); |
82 | int (*set_crop)(struct soc_camera_device *, struct v4l2_crop *); |
83 | /* |
84 | * The difference to .set_crop() is, that .set_livecrop is not allowed |
85 | * to change the output sizes |
86 | */ |
87 | int (*set_livecrop)(struct soc_camera_device *, struct v4l2_crop *); |
88 | int (*set_fmt)(struct soc_camera_device *, struct v4l2_format *); |
89 | int (*try_fmt)(struct soc_camera_device *, struct v4l2_format *); |
90 | void (*init_videobuf)(struct videobuf_queue *, |
91 | struct soc_camera_device *); |
92 | int (*init_videobuf2)(struct vb2_queue *, |
93 | struct soc_camera_device *); |
94 | int (*reqbufs)(struct soc_camera_device *, struct v4l2_requestbuffers *); |
95 | int (*querycap)(struct soc_camera_host *, struct v4l2_capability *); |
96 | int (*set_bus_param)(struct soc_camera_device *, __u32); |
97 | int (*get_ctrl)(struct soc_camera_device *, struct v4l2_control *); |
98 | int (*set_ctrl)(struct soc_camera_device *, struct v4l2_control *); |
99 | int (*get_parm)(struct soc_camera_device *, struct v4l2_streamparm *); |
100 | int (*set_parm)(struct soc_camera_device *, struct v4l2_streamparm *); |
101 | int (*enum_fsizes)(struct soc_camera_device *, struct v4l2_frmsizeenum *); |
102 | unsigned int (*poll)(struct file *, poll_table *); |
103 | const struct v4l2_queryctrl *controls; |
104 | int num_controls; |
105 | }; |
106 | |
107 | #define SOCAM_SENSOR_INVERT_PCLK (1 << 0) |
108 | #define SOCAM_SENSOR_INVERT_MCLK (1 << 1) |
109 | #define SOCAM_SENSOR_INVERT_HSYNC (1 << 2) |
110 | #define SOCAM_SENSOR_INVERT_VSYNC (1 << 3) |
111 | #define SOCAM_SENSOR_INVERT_DATA (1 << 4) |
112 | #define SOCAM_MIPI_1LANE (1 << 5) |
113 | #define SOCAM_MIPI_2LANE (1 << 6) |
114 | #define SOCAM_MIPI_3LANE (1 << 7) |
115 | #define SOCAM_MIPI_4LANE (1 << 8) |
116 | #define SOCAM_MIPI (SOCAM_MIPI_1LANE | SOCAM_MIPI_2LANE | \ |
117 | SOCAM_MIPI_3LANE | SOCAM_MIPI_4LANE) |
118 | |
119 | struct i2c_board_info; |
120 | struct regulator_bulk_data; |
121 | |
122 | struct soc_camera_link { |
123 | /* Camera bus id, used to match a camera and a bus */ |
124 | int bus_id; |
125 | /* Per camera SOCAM_SENSOR_* bus flags */ |
126 | unsigned long flags; |
127 | int i2c_adapter_id; |
128 | struct i2c_board_info *board_info; |
129 | const char *module_name; |
130 | void *priv; |
131 | |
132 | /* Optional regulators that have to be managed on power on/off events */ |
133 | struct regulator_bulk_data *regulators; |
134 | int num_regulators; |
135 | |
136 | /* |
137 | * For non-I2C devices platform platform has to provide methods to |
138 | * add a device to the system and to remove |
139 | */ |
140 | int (*add_device)(struct soc_camera_link *, struct device *); |
141 | void (*del_device)(struct soc_camera_link *); |
142 | /* Optional callbacks to power on or off and reset the sensor */ |
143 | int (*power)(struct device *, int); |
144 | int (*reset)(struct device *); |
145 | /* |
146 | * some platforms may support different data widths than the sensors |
147 | * native ones due to different data line routing. Let the board code |
148 | * overwrite the width flags. |
149 | */ |
150 | int (*set_bus_param)(struct soc_camera_link *, unsigned long flags); |
151 | unsigned long (*query_bus_param)(struct soc_camera_link *); |
152 | void (*free_bus)(struct soc_camera_link *); |
153 | }; |
154 | |
155 | static inline struct soc_camera_device *to_soc_camera_dev( |
156 | const struct device *dev) |
157 | { |
158 | return container_of(dev, struct soc_camera_device, dev); |
159 | } |
160 | |
161 | static inline struct soc_camera_host *to_soc_camera_host( |
162 | const struct device *dev) |
163 | { |
164 | struct v4l2_device *v4l2_dev = dev_get_drvdata(dev); |
165 | |
166 | return container_of(v4l2_dev, struct soc_camera_host, v4l2_dev); |
167 | } |
168 | |
169 | static inline struct soc_camera_link *to_soc_camera_link( |
170 | const struct soc_camera_device *icd) |
171 | { |
172 | return icd->dev.platform_data; |
173 | } |
174 | |
175 | static inline struct device *to_soc_camera_control( |
176 | const struct soc_camera_device *icd) |
177 | { |
178 | return dev_get_drvdata(&icd->dev); |
179 | } |
180 | |
181 | static inline struct v4l2_subdev *soc_camera_to_subdev( |
182 | const struct soc_camera_device *icd) |
183 | { |
184 | struct device *control = to_soc_camera_control(icd); |
185 | return dev_get_drvdata(control); |
186 | } |
187 | |
188 | int soc_camera_host_register(struct soc_camera_host *ici); |
189 | void soc_camera_host_unregister(struct soc_camera_host *ici); |
190 | |
191 | const struct soc_camera_format_xlate *soc_camera_xlate_by_fourcc( |
192 | struct soc_camera_device *icd, unsigned int fourcc); |
193 | |
194 | /** |
195 | * struct soc_camera_format_xlate - match between host and sensor formats |
196 | * @code: code of a sensor provided format |
197 | * @host_fmt: host format after host translation from code |
198 | * |
199 | * Host and sensor translation structure. Used in table of host and sensor |
200 | * formats matchings in soc_camera_device. A host can override the generic list |
201 | * generation by implementing get_formats(), and use it for format checks and |
202 | * format setup. |
203 | */ |
204 | struct soc_camera_format_xlate { |
205 | enum v4l2_mbus_pixelcode code; |
206 | const struct soc_mbus_pixelfmt *host_fmt; |
207 | }; |
208 | |
209 | struct soc_camera_ops { |
210 | int (*suspend)(struct soc_camera_device *, pm_message_t state); |
211 | int (*resume)(struct soc_camera_device *); |
212 | unsigned long (*query_bus_param)(struct soc_camera_device *); |
213 | int (*set_bus_param)(struct soc_camera_device *, unsigned long); |
214 | int (*enum_input)(struct soc_camera_device *, struct v4l2_input *); |
215 | const struct v4l2_queryctrl *controls; |
216 | int num_controls; |
217 | }; |
218 | |
219 | #define SOCAM_SENSE_PCLK_CHANGED (1 << 0) |
220 | |
221 | /** |
222 | * This struct can be attached to struct soc_camera_device by the host driver |
223 | * to request sense from the camera, for example, when calling .set_fmt(). The |
224 | * host then can check which flags are set and verify respective values if any. |
225 | * For example, if SOCAM_SENSE_PCLK_CHANGED is set, it means, pixclock has |
226 | * changed during this operation. After completion the host should detach sense. |
227 | * |
228 | * @flags ored SOCAM_SENSE_* flags |
229 | * @master_clock if the host wants to be informed about pixel-clock |
230 | * change, it better set master_clock. |
231 | * @pixel_clock_max maximum pixel clock frequency supported by the host, |
232 | * camera is not allowed to exceed this. |
233 | * @pixel_clock if the camera driver changed pixel clock during this |
234 | * operation, it sets SOCAM_SENSE_PCLK_CHANGED, uses |
235 | * master_clock to calculate the new pixel-clock and |
236 | * sets this field. |
237 | */ |
238 | struct soc_camera_sense { |
239 | unsigned long flags; |
240 | unsigned long master_clock; |
241 | unsigned long pixel_clock_max; |
242 | unsigned long pixel_clock; |
243 | }; |
244 | |
245 | static inline struct v4l2_queryctrl const *soc_camera_find_qctrl( |
246 | struct soc_camera_ops *ops, int id) |
247 | { |
248 | int i; |
249 | |
250 | for (i = 0; i < ops->num_controls; i++) |
251 | if (ops->controls[i].id == id) |
252 | return &ops->controls[i]; |
253 | |
254 | return NULL; |
255 | } |
256 | |
257 | #define SOCAM_MASTER (1 << 0) |
258 | #define SOCAM_SLAVE (1 << 1) |
259 | #define SOCAM_HSYNC_ACTIVE_HIGH (1 << 2) |
260 | #define SOCAM_HSYNC_ACTIVE_LOW (1 << 3) |
261 | #define SOCAM_VSYNC_ACTIVE_HIGH (1 << 4) |
262 | #define SOCAM_VSYNC_ACTIVE_LOW (1 << 5) |
263 | #define SOCAM_DATAWIDTH_4 (1 << 6) |
264 | #define SOCAM_DATAWIDTH_8 (1 << 7) |
265 | #define SOCAM_DATAWIDTH_9 (1 << 8) |
266 | #define SOCAM_DATAWIDTH_10 (1 << 9) |
267 | #define SOCAM_DATAWIDTH_15 (1 << 10) |
268 | #define SOCAM_DATAWIDTH_16 (1 << 11) |
269 | #define SOCAM_PCLK_SAMPLE_RISING (1 << 12) |
270 | #define SOCAM_PCLK_SAMPLE_FALLING (1 << 13) |
271 | #define SOCAM_DATA_ACTIVE_HIGH (1 << 14) |
272 | #define SOCAM_DATA_ACTIVE_LOW (1 << 15) |
273 | |
274 | #define SOCAM_DATAWIDTH_MASK (SOCAM_DATAWIDTH_4 | SOCAM_DATAWIDTH_8 | \ |
275 | SOCAM_DATAWIDTH_9 | SOCAM_DATAWIDTH_10 | \ |
276 | SOCAM_DATAWIDTH_15 | SOCAM_DATAWIDTH_16) |
277 | |
278 | static inline unsigned long soc_camera_bus_param_compatible( |
279 | unsigned long camera_flags, unsigned long bus_flags) |
280 | { |
281 | unsigned long common_flags, hsync, vsync, pclk, data, buswidth, mode; |
282 | unsigned long mipi; |
283 | |
284 | common_flags = camera_flags & bus_flags; |
285 | |
286 | hsync = common_flags & (SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_LOW); |
287 | vsync = common_flags & (SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_LOW); |
288 | pclk = common_flags & (SOCAM_PCLK_SAMPLE_RISING | SOCAM_PCLK_SAMPLE_FALLING); |
289 | data = common_flags & (SOCAM_DATA_ACTIVE_HIGH | SOCAM_DATA_ACTIVE_LOW); |
290 | mode = common_flags & (SOCAM_MASTER | SOCAM_SLAVE); |
291 | buswidth = common_flags & SOCAM_DATAWIDTH_MASK; |
292 | mipi = common_flags & SOCAM_MIPI; |
293 | |
294 | return ((!hsync || !vsync || !pclk || !data || !mode || !buswidth) && !mipi) ? 0 : |
295 | common_flags; |
296 | } |
297 | |
298 | static inline void soc_camera_limit_side(int *start, int *length, |
299 | unsigned int start_min, |
300 | unsigned int length_min, unsigned int length_max) |
301 | { |
302 | if (*length < length_min) |
303 | *length = length_min; |
304 | else if (*length > length_max) |
305 | *length = length_max; |
306 | |
307 | if (*start < start_min) |
308 | *start = start_min; |
309 | else if (*start > start_min + length_max - *length) |
310 | *start = start_min + length_max - *length; |
311 | } |
312 | |
313 | extern unsigned long soc_camera_apply_sensor_flags(struct soc_camera_link *icl, |
314 | unsigned long flags); |
315 | |
316 | /* This is only temporary here - until v4l2-subdev begins to link to video_device */ |
317 | #include <linux/i2c.h> |
318 | static inline struct video_device *soc_camera_i2c_to_vdev(struct i2c_client *client) |
319 | { |
320 | struct soc_camera_device *icd = client->dev.platform_data; |
321 | return icd->vdev; |
322 | } |
323 | |
324 | static inline struct soc_camera_device *soc_camera_from_vb2q(struct vb2_queue *vq) |
325 | { |
326 | return container_of(vq, struct soc_camera_device, vb2_vidq); |
327 | } |
328 | |
329 | static inline struct soc_camera_device *soc_camera_from_vbq(struct videobuf_queue *vq) |
330 | { |
331 | return container_of(vq, struct soc_camera_device, vb_vidq); |
332 | } |
333 | |
334 | void soc_camera_lock(struct vb2_queue *vq); |
335 | void soc_camera_unlock(struct vb2_queue *vq); |
336 | |
337 | #endif |
338 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9