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866b8695 GKH |
1 | /* |
2 | * Copyright (C) 2005-2006 Micronas USA Inc. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License (Version 2) as | |
6 | * published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License | |
14 | * along with this program; if not, write to the Free Software Foundation, | |
15 | * Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. | |
16 | */ | |
17 | ||
18 | #include <linux/module.h> | |
19 | #include <linux/init.h> | |
866b8695 | 20 | #include <linux/i2c.h> |
df20d69e | 21 | #include <linux/videodev2.h> |
866b8695 | 22 | #include <linux/ioctl.h> |
5a0e3ad6 | 23 | #include <linux/slab.h> |
866b8695 GKH |
24 | |
25 | #include "wis-i2c.h" | |
26 | ||
27 | struct wis_saa7113 { | |
28 | int norm; | |
29 | int brightness; | |
30 | int contrast; | |
31 | int saturation; | |
32 | int hue; | |
33 | }; | |
34 | ||
35 | static u8 initial_registers[] = | |
36 | { | |
37 | 0x01, 0x08, | |
38 | 0x02, 0xc0, | |
39 | 0x03, 0x33, | |
40 | 0x04, 0x00, | |
41 | 0x05, 0x00, | |
42 | 0x06, 0xe9, | |
43 | 0x07, 0x0d, | |
44 | 0x08, 0xd8, | |
45 | 0x09, 0x40, | |
46 | 0x0a, 0x80, | |
47 | 0x0b, 0x47, | |
48 | 0x0c, 0x40, | |
49 | 0x0d, 0x00, | |
50 | 0x0e, 0x01, | |
51 | 0x0f, 0x2a, | |
52 | 0x10, 0x40, | |
53 | 0x11, 0x0c, | |
54 | 0x12, 0xfe, | |
55 | 0x13, 0x00, | |
56 | 0x14, 0x00, | |
57 | 0x15, 0x04, | |
58 | 0x16, 0x00, | |
59 | 0x17, 0x00, | |
60 | 0x18, 0x00, | |
61 | 0x19, 0x00, | |
62 | 0x1a, 0x00, | |
63 | 0x1b, 0x00, | |
64 | 0x1c, 0x00, | |
65 | 0x1d, 0x00, | |
66 | 0x1e, 0x00, | |
67 | 0x1f, 0xc8, | |
68 | 0x40, 0x00, | |
69 | 0x41, 0xff, | |
70 | 0x42, 0xff, | |
71 | 0x43, 0xff, | |
72 | 0x44, 0xff, | |
73 | 0x45, 0xff, | |
74 | 0x46, 0xff, | |
75 | 0x47, 0xff, | |
76 | 0x48, 0xff, | |
77 | 0x49, 0xff, | |
78 | 0x4a, 0xff, | |
79 | 0x4b, 0xff, | |
80 | 0x4c, 0xff, | |
81 | 0x4d, 0xff, | |
82 | 0x4e, 0xff, | |
83 | 0x4f, 0xff, | |
84 | 0x50, 0xff, | |
85 | 0x51, 0xff, | |
86 | 0x52, 0xff, | |
87 | 0x53, 0xff, | |
88 | 0x54, 0xff, | |
89 | 0x55, 0xff, | |
90 | 0x56, 0xff, | |
91 | 0x57, 0xff, | |
92 | 0x58, 0x00, | |
93 | 0x59, 0x54, | |
94 | 0x5a, 0x07, | |
95 | 0x5b, 0x83, | |
96 | 0x5c, 0x00, | |
97 | 0x5d, 0x00, | |
98 | 0x5e, 0x00, | |
99 | 0x5f, 0x00, | |
100 | 0x60, 0x00, | |
101 | 0x61, 0x00, | |
102 | 0x00, 0x00, /* Terminator (reg 0x00 is read-only) */ | |
103 | }; | |
104 | ||
105 | static int write_reg(struct i2c_client *client, u8 reg, u8 value) | |
106 | { | |
107 | return i2c_smbus_write_byte_data(client, reg, value); | |
108 | } | |
109 | ||
110 | static int write_regs(struct i2c_client *client, u8 *regs) | |
111 | { | |
112 | int i; | |
113 | ||
114 | for (i = 0; regs[i] != 0x00; i += 2) | |
115 | if (i2c_smbus_write_byte_data(client, regs[i], regs[i + 1]) < 0) | |
116 | return -1; | |
117 | return 0; | |
118 | } | |
119 | ||
120 | static int wis_saa7113_command(struct i2c_client *client, | |
121 | unsigned int cmd, void *arg) | |
122 | { | |
123 | struct wis_saa7113 *dec = i2c_get_clientdata(client); | |
124 | ||
125 | switch (cmd) { | |
df20d69e | 126 | case VIDIOC_S_INPUT: |
866b8695 GKH |
127 | { |
128 | int *input = arg; | |
129 | ||
130 | i2c_smbus_write_byte_data(client, 0x02, 0xC0 | *input); | |
131 | i2c_smbus_write_byte_data(client, 0x09, | |
132 | *input < 6 ? 0x40 : 0x80); | |
133 | break; | |
134 | } | |
df20d69e | 135 | case VIDIOC_S_STD: |
866b8695 | 136 | { |
df20d69e | 137 | v4l2_std_id *input = arg; |
866b8695 | 138 | dec->norm = *input; |
df20d69e | 139 | if (dec->norm & V4L2_STD_NTSC) { |
866b8695 GKH |
140 | write_reg(client, 0x0e, 0x01); |
141 | write_reg(client, 0x10, 0x40); | |
df20d69e RC |
142 | } else if (dec->norm & V4L2_STD_PAL) { |
143 | write_reg(client, 0x0e, 0x01); | |
144 | write_reg(client, 0x10, 0x48); | |
145 | } else if (dec->norm * V4L2_STD_SECAM) { | |
866b8695 GKH |
146 | write_reg(client, 0x0e, 0x50); |
147 | write_reg(client, 0x10, 0x48); | |
866b8695 GKH |
148 | } |
149 | break; | |
150 | } | |
151 | case VIDIOC_QUERYCTRL: | |
152 | { | |
153 | struct v4l2_queryctrl *ctrl = arg; | |
154 | ||
155 | switch (ctrl->id) { | |
156 | case V4L2_CID_BRIGHTNESS: | |
157 | ctrl->type = V4L2_CTRL_TYPE_INTEGER; | |
158 | strncpy(ctrl->name, "Brightness", sizeof(ctrl->name)); | |
159 | ctrl->minimum = 0; | |
160 | ctrl->maximum = 255; | |
161 | ctrl->step = 1; | |
162 | ctrl->default_value = 128; | |
163 | ctrl->flags = 0; | |
164 | break; | |
165 | case V4L2_CID_CONTRAST: | |
166 | ctrl->type = V4L2_CTRL_TYPE_INTEGER; | |
167 | strncpy(ctrl->name, "Contrast", sizeof(ctrl->name)); | |
168 | ctrl->minimum = 0; | |
169 | ctrl->maximum = 127; | |
170 | ctrl->step = 1; | |
171 | ctrl->default_value = 71; | |
172 | ctrl->flags = 0; | |
173 | break; | |
174 | case V4L2_CID_SATURATION: | |
175 | ctrl->type = V4L2_CTRL_TYPE_INTEGER; | |
176 | strncpy(ctrl->name, "Saturation", sizeof(ctrl->name)); | |
177 | ctrl->minimum = 0; | |
178 | ctrl->maximum = 127; | |
179 | ctrl->step = 1; | |
180 | ctrl->default_value = 64; | |
181 | ctrl->flags = 0; | |
182 | break; | |
183 | case V4L2_CID_HUE: | |
184 | ctrl->type = V4L2_CTRL_TYPE_INTEGER; | |
185 | strncpy(ctrl->name, "Hue", sizeof(ctrl->name)); | |
186 | ctrl->minimum = -128; | |
187 | ctrl->maximum = 127; | |
188 | ctrl->step = 1; | |
189 | ctrl->default_value = 0; | |
190 | ctrl->flags = 0; | |
191 | break; | |
192 | } | |
193 | break; | |
194 | } | |
195 | case VIDIOC_S_CTRL: | |
196 | { | |
197 | struct v4l2_control *ctrl = arg; | |
198 | ||
199 | switch (ctrl->id) { | |
200 | case V4L2_CID_BRIGHTNESS: | |
201 | if (ctrl->value > 255) | |
202 | dec->brightness = 255; | |
203 | else if (ctrl->value < 0) | |
204 | dec->brightness = 0; | |
205 | else | |
206 | dec->brightness = ctrl->value; | |
207 | write_reg(client, 0x0a, dec->brightness); | |
208 | break; | |
209 | case V4L2_CID_CONTRAST: | |
210 | if (ctrl->value > 127) | |
211 | dec->contrast = 127; | |
212 | else if (ctrl->value < 0) | |
213 | dec->contrast = 0; | |
214 | else | |
215 | dec->contrast = ctrl->value; | |
216 | write_reg(client, 0x0b, dec->contrast); | |
217 | break; | |
218 | case V4L2_CID_SATURATION: | |
219 | if (ctrl->value > 127) | |
220 | dec->saturation = 127; | |
221 | else if (ctrl->value < 0) | |
222 | dec->saturation = 0; | |
223 | else | |
224 | dec->saturation = ctrl->value; | |
225 | write_reg(client, 0x0c, dec->saturation); | |
226 | break; | |
227 | case V4L2_CID_HUE: | |
228 | if (ctrl->value > 127) | |
229 | dec->hue = 127; | |
230 | else if (ctrl->value < -128) | |
231 | dec->hue = -128; | |
232 | else | |
233 | dec->hue = ctrl->value; | |
234 | write_reg(client, 0x0d, dec->hue); | |
235 | break; | |
236 | } | |
237 | break; | |
238 | } | |
239 | case VIDIOC_G_CTRL: | |
240 | { | |
241 | struct v4l2_control *ctrl = arg; | |
242 | ||
243 | switch (ctrl->id) { | |
244 | case V4L2_CID_BRIGHTNESS: | |
245 | ctrl->value = dec->brightness; | |
246 | break; | |
247 | case V4L2_CID_CONTRAST: | |
248 | ctrl->value = dec->contrast; | |
249 | break; | |
250 | case V4L2_CID_SATURATION: | |
251 | ctrl->value = dec->saturation; | |
252 | break; | |
253 | case V4L2_CID_HUE: | |
254 | ctrl->value = dec->hue; | |
255 | break; | |
256 | } | |
257 | break; | |
258 | } | |
259 | default: | |
260 | break; | |
261 | } | |
262 | return 0; | |
263 | } | |
264 | ||
7400516a JD |
265 | static int wis_saa7113_probe(struct i2c_client *client, |
266 | const struct i2c_device_id *id) | |
866b8695 | 267 | { |
7400516a | 268 | struct i2c_adapter *adapter = client->adapter; |
866b8695 GKH |
269 | struct wis_saa7113 *dec; |
270 | ||
271 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | |
7400516a | 272 | return -ENODEV; |
866b8695 GKH |
273 | |
274 | dec = kmalloc(sizeof(struct wis_saa7113), GFP_KERNEL); | |
7400516a | 275 | if (dec == NULL) |
866b8695 | 276 | return -ENOMEM; |
7400516a | 277 | |
df20d69e | 278 | dec->norm = V4L2_STD_NTSC; |
866b8695 GKH |
279 | dec->brightness = 128; |
280 | dec->contrast = 71; | |
281 | dec->saturation = 64; | |
282 | dec->hue = 0; | |
283 | i2c_set_clientdata(client, dec); | |
284 | ||
285 | printk(KERN_DEBUG | |
286 | "wis-saa7113: initializing SAA7113 at address %d on %s\n", | |
7400516a | 287 | client->addr, adapter->name); |
866b8695 GKH |
288 | |
289 | if (write_regs(client, initial_registers) < 0) { | |
290 | printk(KERN_ERR | |
291 | "wis-saa7113: error initializing SAA7113\n"); | |
866b8695 | 292 | kfree(dec); |
7400516a | 293 | return -ENODEV; |
866b8695 GKH |
294 | } |
295 | ||
866b8695 GKH |
296 | return 0; |
297 | } | |
298 | ||
7400516a | 299 | static int wis_saa7113_remove(struct i2c_client *client) |
866b8695 GKH |
300 | { |
301 | struct wis_saa7113 *dec = i2c_get_clientdata(client); | |
866b8695 | 302 | |
7400516a | 303 | i2c_set_clientdata(client, NULL); |
866b8695 GKH |
304 | kfree(dec); |
305 | return 0; | |
306 | } | |
307 | ||
b76a3263 | 308 | static const struct i2c_device_id wis_saa7113_id[] = { |
7400516a JD |
309 | { "wis_saa7113", 0 }, |
310 | { } | |
311 | }; | |
312 | ||
866b8695 GKH |
313 | static struct i2c_driver wis_saa7113_driver = { |
314 | .driver = { | |
315 | .name = "WIS SAA7113 I2C driver", | |
316 | }, | |
7400516a JD |
317 | .probe = wis_saa7113_probe, |
318 | .remove = wis_saa7113_remove, | |
866b8695 | 319 | .command = wis_saa7113_command, |
7400516a | 320 | .id_table = wis_saa7113_id, |
866b8695 GKH |
321 | }; |
322 | ||
323 | static int __init wis_saa7113_init(void) | |
324 | { | |
7400516a | 325 | return i2c_add_driver(&wis_saa7113_driver); |
866b8695 GKH |
326 | } |
327 | ||
328 | static void __exit wis_saa7113_cleanup(void) | |
329 | { | |
866b8695 GKH |
330 | i2c_del_driver(&wis_saa7113_driver); |
331 | } | |
332 | ||
333 | module_init(wis_saa7113_init); | |
334 | module_exit(wis_saa7113_cleanup); | |
335 | ||
336 | MODULE_LICENSE("GPL v2"); |