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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 GKH |
22 | #include <linux/ioctl.h> |
23 | ||
24 | #include "wis-i2c.h" | |
25 | ||
26 | struct wis_tw2804 { | |
27 | int channel; | |
28 | int norm; | |
29 | int brightness; | |
30 | int contrast; | |
31 | int saturation; | |
32 | int hue; | |
33 | }; | |
34 | ||
35 | static u8 global_registers[] = | |
36 | { | |
37 | 0x39, 0x00, | |
38 | 0x3a, 0xff, | |
39 | 0x3b, 0x84, | |
40 | 0x3c, 0x80, | |
41 | 0x3d, 0x80, | |
42 | 0x3e, 0x82, | |
43 | 0x3f, 0x82, | |
44 | 0xff, 0xff, /* Terminator (reg 0xff does not exist) */ | |
45 | }; | |
46 | ||
47 | static u8 channel_registers[] = | |
48 | { | |
49 | 0x01, 0xc4, | |
50 | 0x02, 0xa5, | |
51 | 0x03, 0x20, | |
52 | 0x04, 0xd0, | |
53 | 0x05, 0x20, | |
54 | 0x06, 0xd0, | |
55 | 0x07, 0x88, | |
56 | 0x08, 0x20, | |
57 | 0x09, 0x07, | |
58 | 0x0a, 0xf0, | |
59 | 0x0b, 0x07, | |
60 | 0x0c, 0xf0, | |
61 | 0x0d, 0x40, | |
62 | 0x0e, 0xd2, | |
63 | 0x0f, 0x80, | |
64 | 0x10, 0x80, | |
65 | 0x11, 0x80, | |
66 | 0x12, 0x80, | |
67 | 0x13, 0x1f, | |
68 | 0x14, 0x00, | |
69 | 0x15, 0x00, | |
70 | 0x16, 0x00, | |
71 | 0x17, 0x00, | |
72 | 0x18, 0xff, | |
73 | 0x19, 0xff, | |
74 | 0x1a, 0xff, | |
75 | 0x1b, 0xff, | |
76 | 0x1c, 0xff, | |
77 | 0x1d, 0xff, | |
78 | 0x1e, 0xff, | |
79 | 0x1f, 0xff, | |
80 | 0x20, 0x07, | |
81 | 0x21, 0x07, | |
82 | 0x22, 0x00, | |
83 | 0x23, 0x91, | |
84 | 0x24, 0x51, | |
85 | 0x25, 0x03, | |
86 | 0x26, 0x00, | |
87 | 0x27, 0x00, | |
88 | 0x28, 0x00, | |
89 | 0x29, 0x00, | |
90 | 0x2a, 0x00, | |
91 | 0x2b, 0x00, | |
92 | 0x2c, 0x00, | |
93 | 0x2d, 0x00, | |
94 | 0x2e, 0x00, | |
95 | 0x2f, 0x00, | |
96 | 0x30, 0x00, | |
97 | 0x31, 0x00, | |
98 | 0x32, 0x00, | |
99 | 0x33, 0x00, | |
100 | 0x34, 0x00, | |
101 | 0x35, 0x00, | |
102 | 0x36, 0x00, | |
103 | 0x37, 0x00, | |
104 | 0xff, 0xff, /* Terminator (reg 0xff does not exist) */ | |
105 | }; | |
106 | ||
107 | static int write_reg(struct i2c_client *client, u8 reg, u8 value, int channel) | |
108 | { | |
109 | return i2c_smbus_write_byte_data(client, reg | (channel << 6), value); | |
110 | } | |
111 | ||
112 | static int write_regs(struct i2c_client *client, u8 *regs, int channel) | |
113 | { | |
114 | int i; | |
115 | ||
116 | for (i = 0; regs[i] != 0xff; i += 2) | |
117 | if (i2c_smbus_write_byte_data(client, | |
118 | regs[i] | (channel << 6), regs[i + 1]) < 0) | |
119 | return -1; | |
120 | return 0; | |
121 | } | |
122 | ||
123 | static int wis_tw2804_command(struct i2c_client *client, | |
124 | unsigned int cmd, void *arg) | |
125 | { | |
126 | struct wis_tw2804 *dec = i2c_get_clientdata(client); | |
127 | ||
128 | if (cmd == DECODER_SET_CHANNEL) { | |
129 | int *input = arg; | |
130 | ||
131 | if (*input < 0 || *input > 3) { | |
132 | printk(KERN_ERR "wis-tw2804: channel %d is not " | |
133 | "between 0 and 3!\n", *input); | |
134 | return 0; | |
135 | } | |
136 | dec->channel = *input; | |
137 | printk(KERN_DEBUG "wis-tw2804: initializing TW2804 " | |
138 | "channel %d\n", dec->channel); | |
139 | if (dec->channel == 0 && | |
140 | write_regs(client, global_registers, 0) < 0) { | |
141 | printk(KERN_ERR "wis-tw2804: error initializing " | |
142 | "TW2804 global registers\n"); | |
143 | return 0; | |
144 | } | |
145 | if (write_regs(client, channel_registers, dec->channel) < 0) { | |
146 | printk(KERN_ERR "wis-tw2804: error initializing " | |
147 | "TW2804 channel %d\n", dec->channel); | |
148 | return 0; | |
149 | } | |
150 | return 0; | |
151 | } | |
152 | ||
153 | if (dec->channel < 0) { | |
154 | printk(KERN_DEBUG "wis-tw2804: ignoring command %08x until " | |
155 | "channel number is set\n", cmd); | |
156 | return 0; | |
157 | } | |
158 | ||
159 | switch (cmd) { | |
df20d69e | 160 | case VIDIOC_S_STD: |
866b8695 | 161 | { |
df20d69e | 162 | v4l2_std_id *input = arg; |
866b8695 | 163 | u8 regs[] = { |
df20d69e RC |
164 | 0x01, *input & V4L2_STD_NTSC ? 0xc4 : 0x84, |
165 | 0x09, *input & V4L2_STD_NTSC ? 0x07 : 0x04, | |
166 | 0x0a, *input & V4L2_STD_NTSC ? 0xf0 : 0x20, | |
167 | 0x0b, *input & V4L2_STD_NTSC ? 0x07 : 0x04, | |
168 | 0x0c, *input & V4L2_STD_NTSC ? 0xf0 : 0x20, | |
169 | 0x0d, *input & V4L2_STD_NTSC ? 0x40 : 0x4a, | |
170 | 0x16, *input & V4L2_STD_NTSC ? 0x00 : 0x40, | |
171 | 0x17, *input & V4L2_STD_NTSC ? 0x00 : 0x40, | |
172 | 0x20, *input & V4L2_STD_NTSC ? 0x07 : 0x0f, | |
173 | 0x21, *input & V4L2_STD_NTSC ? 0x07 : 0x0f, | |
866b8695 GKH |
174 | 0xff, 0xff, |
175 | }; | |
176 | write_regs(client, regs, dec->channel); | |
177 | dec->norm = *input; | |
178 | break; | |
179 | } | |
180 | case VIDIOC_QUERYCTRL: | |
181 | { | |
182 | struct v4l2_queryctrl *ctrl = arg; | |
183 | ||
184 | switch (ctrl->id) { | |
185 | case V4L2_CID_BRIGHTNESS: | |
186 | ctrl->type = V4L2_CTRL_TYPE_INTEGER; | |
187 | strncpy(ctrl->name, "Brightness", sizeof(ctrl->name)); | |
188 | ctrl->minimum = 0; | |
189 | ctrl->maximum = 255; | |
190 | ctrl->step = 1; | |
191 | ctrl->default_value = 128; | |
192 | ctrl->flags = 0; | |
193 | break; | |
194 | case V4L2_CID_CONTRAST: | |
195 | ctrl->type = V4L2_CTRL_TYPE_INTEGER; | |
196 | strncpy(ctrl->name, "Contrast", sizeof(ctrl->name)); | |
197 | ctrl->minimum = 0; | |
198 | ctrl->maximum = 255; | |
199 | ctrl->step = 1; | |
200 | ctrl->default_value = 128; | |
201 | ctrl->flags = 0; | |
202 | break; | |
203 | case V4L2_CID_SATURATION: | |
204 | ctrl->type = V4L2_CTRL_TYPE_INTEGER; | |
205 | strncpy(ctrl->name, "Saturation", sizeof(ctrl->name)); | |
206 | ctrl->minimum = 0; | |
207 | ctrl->maximum = 255; | |
208 | ctrl->step = 1; | |
209 | ctrl->default_value = 128; | |
210 | ctrl->flags = 0; | |
211 | break; | |
212 | case V4L2_CID_HUE: | |
213 | ctrl->type = V4L2_CTRL_TYPE_INTEGER; | |
214 | strncpy(ctrl->name, "Hue", sizeof(ctrl->name)); | |
215 | ctrl->minimum = 0; | |
216 | ctrl->maximum = 255; | |
217 | ctrl->step = 1; | |
218 | ctrl->default_value = 128; | |
219 | ctrl->flags = 0; | |
220 | break; | |
221 | } | |
222 | break; | |
223 | } | |
224 | case VIDIOC_S_CTRL: | |
225 | { | |
226 | struct v4l2_control *ctrl = arg; | |
227 | ||
228 | switch (ctrl->id) { | |
229 | case V4L2_CID_BRIGHTNESS: | |
230 | if (ctrl->value > 255) | |
231 | dec->brightness = 255; | |
232 | else if (ctrl->value < 0) | |
233 | dec->brightness = 0; | |
234 | else | |
235 | dec->brightness = ctrl->value; | |
236 | write_reg(client, 0x12, dec->brightness, dec->channel); | |
237 | break; | |
238 | case V4L2_CID_CONTRAST: | |
239 | if (ctrl->value > 255) | |
240 | dec->contrast = 255; | |
241 | else if (ctrl->value < 0) | |
242 | dec->contrast = 0; | |
243 | else | |
244 | dec->contrast = ctrl->value; | |
245 | write_reg(client, 0x11, dec->contrast, dec->channel); | |
246 | break; | |
247 | case V4L2_CID_SATURATION: | |
248 | if (ctrl->value > 255) | |
249 | dec->saturation = 255; | |
250 | else if (ctrl->value < 0) | |
251 | dec->saturation = 0; | |
252 | else | |
253 | dec->saturation = ctrl->value; | |
254 | write_reg(client, 0x10, dec->saturation, dec->channel); | |
255 | break; | |
256 | case V4L2_CID_HUE: | |
257 | if (ctrl->value > 255) | |
258 | dec->hue = 255; | |
259 | else if (ctrl->value < 0) | |
260 | dec->hue = 0; | |
261 | else | |
262 | dec->hue = ctrl->value; | |
263 | write_reg(client, 0x0f, dec->hue, dec->channel); | |
264 | break; | |
265 | } | |
266 | break; | |
267 | } | |
268 | case VIDIOC_G_CTRL: | |
269 | { | |
270 | struct v4l2_control *ctrl = arg; | |
271 | ||
272 | switch (ctrl->id) { | |
273 | case V4L2_CID_BRIGHTNESS: | |
274 | ctrl->value = dec->brightness; | |
275 | break; | |
276 | case V4L2_CID_CONTRAST: | |
277 | ctrl->value = dec->contrast; | |
278 | break; | |
279 | case V4L2_CID_SATURATION: | |
280 | ctrl->value = dec->saturation; | |
281 | break; | |
282 | case V4L2_CID_HUE: | |
283 | ctrl->value = dec->hue; | |
284 | break; | |
285 | } | |
286 | break; | |
287 | } | |
288 | default: | |
289 | break; | |
290 | } | |
291 | return 0; | |
292 | } | |
293 | ||
7400516a JD |
294 | static int wis_tw2804_probe(struct i2c_client *client, |
295 | const struct i2c_device_id *id) | |
866b8695 | 296 | { |
7400516a | 297 | struct i2c_adapter *adapter = client->adapter; |
866b8695 GKH |
298 | struct wis_tw2804 *dec; |
299 | ||
300 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | |
7400516a | 301 | return -ENODEV; |
866b8695 GKH |
302 | |
303 | dec = kmalloc(sizeof(struct wis_tw2804), GFP_KERNEL); | |
7400516a | 304 | if (dec == NULL) |
866b8695 | 305 | return -ENOMEM; |
7400516a | 306 | |
866b8695 | 307 | dec->channel = -1; |
df20d69e | 308 | dec->norm = V4L2_STD_NTSC; |
866b8695 GKH |
309 | dec->brightness = 128; |
310 | dec->contrast = 128; | |
311 | dec->saturation = 128; | |
312 | dec->hue = 128; | |
313 | i2c_set_clientdata(client, dec); | |
314 | ||
315 | printk(KERN_DEBUG "wis-tw2804: creating TW2804 at address %d on %s\n", | |
7400516a | 316 | client->addr, adapter->name); |
866b8695 | 317 | |
866b8695 GKH |
318 | return 0; |
319 | } | |
320 | ||
7400516a | 321 | static int wis_tw2804_remove(struct i2c_client *client) |
866b8695 GKH |
322 | { |
323 | struct wis_tw2804 *dec = i2c_get_clientdata(client); | |
866b8695 | 324 | |
7400516a | 325 | i2c_set_clientdata(client, NULL); |
866b8695 GKH |
326 | kfree(dec); |
327 | return 0; | |
328 | } | |
329 | ||
7400516a JD |
330 | static struct i2c_device_id wis_tw2804_id[] = { |
331 | { "wis_tw2804", 0 }, | |
332 | { } | |
333 | }; | |
334 | ||
866b8695 GKH |
335 | static struct i2c_driver wis_tw2804_driver = { |
336 | .driver = { | |
337 | .name = "WIS TW2804 I2C driver", | |
338 | }, | |
7400516a JD |
339 | .probe = wis_tw2804_probe, |
340 | .remove = wis_tw2804_remove, | |
866b8695 | 341 | .command = wis_tw2804_command, |
7400516a | 342 | .id_table = wis_tw2804_id, |
866b8695 GKH |
343 | }; |
344 | ||
345 | static int __init wis_tw2804_init(void) | |
346 | { | |
7400516a | 347 | return i2c_add_driver(&wis_tw2804_driver); |
866b8695 GKH |
348 | } |
349 | ||
350 | static void __exit wis_tw2804_cleanup(void) | |
351 | { | |
866b8695 GKH |
352 | i2c_del_driver(&wis_tw2804_driver); |
353 | } | |
354 | ||
355 | module_init(wis_tw2804_init); | |
356 | module_exit(wis_tw2804_cleanup); | |
357 | ||
358 | MODULE_LICENSE("GPL v2"); |