1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
|
#include "../cmos-subdev.h"
#include "../../wmt-vid.h"
#include "gc2015.h"
#define sensor_write_array(sd, arr, sz) \
cmos_init_8bit_addr(arr, sz, (sd)->i2c_addr)
#define sensor_read(sd, reg) \
wmt_vid_i2c_read(sd->i2c_addr, reg)
#define sensor_write(sd, reg, val) \
wmt_vid_i2c_write(sd->i2c_addr, reg, val)
struct cmos_win_size {
char *name;
int width;
int height;
uint8_t *regs;
size_t size;
};
#define CMOS_WIN_SIZE(n, w, h, r) \
{.name = n, .width = w , .height = h, .regs = r, .size = ARRAY_SIZE(r) }
static const struct cmos_win_size cmos_supported_win_sizes[] = {
CMOS_WIN_SIZE("QVGA", 320, 240, gc2015_320x240),
CMOS_WIN_SIZE("VGA", 640, 480, gc2015_640x480),
CMOS_WIN_SIZE("UXGA", 1600, 1200, gc2015_1600x1200),
};
static const struct cmos_win_size *cmos_select_win(u32 *width, u32 *height)
{
int i;
for (i = 0; i < ARRAY_SIZE(cmos_supported_win_sizes); i++) {
if (cmos_supported_win_sizes[i].width == *width &&
cmos_supported_win_sizes[i].height == *height) {
*width = cmos_supported_win_sizes[i].width;
*height = cmos_supported_win_sizes[i].height;
return &cmos_supported_win_sizes[i];
}
}
return NULL;
}
static int sensor_s_hflip(struct cmos_subdev *sd, int value)
{
int data;
data = sensor_read(sd, 0x14);
switch (value) {
case 0:
data &= ~0x01;
break;
case 1:
data |= 0x01;
break;
default:
return -EINVAL;
}
return sensor_write(sd, 0x14, data);
}
static int sensor_s_vflip(struct cmos_subdev *sd, int value)
{
int data;
data = sensor_read(sd, 0x14);
switch (value) {
case 0:
data &= ~0x02;
break;
case 1:
data |= 0x02;
break;
default:
return -EINVAL;
}
return sensor_write(sd, 0x14, data);
}
static int sensor_s_wb(struct cmos_subdev *sd, enum v4l2_wb_mode value)
{
uint8_t *regs;
size_t size;
switch (value) {
case WHITE_BALANCE_AUTO:
regs = gc2015_wb_auto;
size = ARRAY_SIZE(gc2015_wb_auto);
break;
case WHITE_BALANCE_INCANDESCENCE:
regs = gc2015_wb_incandescent;
size = ARRAY_SIZE(gc2015_wb_incandescent);
break;
case WHITE_BALANCE_DAYLIGHT:
regs = gc2015_wb_daylight;
size = ARRAY_SIZE(gc2015_wb_daylight);
break;
case WHITE_BALANCE_CLOUDY:
regs = gc2015_wb_cloudy;
size = ARRAY_SIZE(gc2015_wb_cloudy);
break;
case WHITE_BALANCE_FLUORESCENT:
regs = gc2015_wb_fluorescent;
size = ARRAY_SIZE(gc2015_wb_fluorescent);
break;
default:
return -EINVAL;
}
sensor_write_array(sd, regs, size);
return 0;
}
static int sensor_queryctrl(struct cmos_subdev *sd, struct v4l2_queryctrl *qc)
{
switch (qc->id) {
case V4L2_CID_VFLIP:
case V4L2_CID_HFLIP:
return v4l2_ctrl_query_fill(qc, 0, 1, 1, 0);
case V4L2_CID_DO_WHITE_BALANCE:
return v4l2_ctrl_query_fill(qc, 0, 3, 1, 0);
}
return -EINVAL;
}
static int sensor_s_ctrl(struct cmos_subdev *sd, struct v4l2_control *ctrl)
{
switch (ctrl->id) {
case V4L2_CID_VFLIP:
return sensor_s_vflip(sd, ctrl->value);
case V4L2_CID_HFLIP:
return sensor_s_hflip(sd, ctrl->value);
case V4L2_CID_DO_WHITE_BALANCE:
return sensor_s_wb(sd, ctrl->value);
}
return -EINVAL;
}
static int sensor_g_mbus_fmt(struct cmos_subdev *sd,
struct v4l2_mbus_framefmt *mf)
{
return -EINVAL;
}
static int sensor_s_mbus_fmt(struct cmos_subdev *sd,
struct v4l2_mbus_framefmt *mf)
{
const struct cmos_win_size *win;
win = cmos_select_win(&mf->width, &mf->height);
if (!win)
return -EINVAL;
sensor_write_array(sd, win->regs, win->size);
return 0;
}
static int sensor_try_mbus_fmt(struct cmos_subdev *sd,
struct v4l2_mbus_framefmt *mf)
{
return 0;
}
static int sensor_identify(struct cmos_subdev *sd)
{
return (sensor_read(sd, 0) == sd->id) ? 0 : -EINVAL;
}
static int sensor_init(struct cmos_subdev *sd)
{
if (!sensor_identify(sd)) {
return -1;
}
sensor_write_array(sd, gc2015_default_regs_init,
ARRAY_SIZE(gc2015_default_regs_init));
return 0;
}
static int sensor_exit(struct cmos_subdev *sd)
{
return 0;
}
static struct cmos_subdev_ops gc2015_ops = {
.identify = sensor_identify,
.init = sensor_init,
.exit = sensor_exit,
.queryctrl = sensor_queryctrl,
.s_ctrl = sensor_s_ctrl,
.s_mbus_fmt = sensor_s_mbus_fmt,
.g_mbus_fmt = sensor_g_mbus_fmt,
.try_mbus_fmt = sensor_try_mbus_fmt,
};
struct cmos_subdev gc2015 = {
.name = "gc2015",
.i2c_addr = 0x30,
.id = 0x2005,
.max_width = 1600,
.max_height = 1200,
.ops = &gc2015_ops,
};
static int __init gc2015_init(void)
{
return cmos_register_sudbdev(&gc2015);
}
static void __exit gc2015_exit(void)
{
return cmos_unregister_subdev(&gc2015);
}
module_init(gc2015_init);
module_exit(gc2015_exit);
MODULE_LICENSE("GPL");
|
