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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_tw9903 { | |
27 | int norm; | |
28 | int brightness; | |
29 | int contrast; | |
30 | int hue; | |
31 | }; | |
32 | ||
33 | static u8 initial_registers[] = | |
34 | { | |
35 | 0x02, 0x44, /* input 1, composite */ | |
36 | 0x03, 0x92, /* correct digital format */ | |
37 | 0x04, 0x00, | |
38 | 0x05, 0x80, /* or 0x00 for PAL */ | |
39 | 0x06, 0x40, /* second internal current reference */ | |
40 | 0x07, 0x02, /* window */ | |
41 | 0x08, 0x14, /* window */ | |
42 | 0x09, 0xf0, /* window */ | |
43 | 0x0a, 0x81, /* window */ | |
44 | 0x0b, 0xd0, /* window */ | |
45 | 0x0c, 0x8c, | |
46 | 0x0d, 0x00, /* scaling */ | |
47 | 0x0e, 0x11, /* scaling */ | |
48 | 0x0f, 0x00, /* scaling */ | |
49 | 0x10, 0x00, /* brightness */ | |
50 | 0x11, 0x60, /* contrast */ | |
51 | 0x12, 0x01, /* sharpness */ | |
52 | 0x13, 0x7f, /* U gain */ | |
53 | 0x14, 0x5a, /* V gain */ | |
54 | 0x15, 0x00, /* hue */ | |
55 | 0x16, 0xc3, /* sharpness */ | |
56 | 0x18, 0x00, | |
57 | 0x19, 0x58, /* vbi */ | |
58 | 0x1a, 0x80, | |
59 | 0x1c, 0x0f, /* video norm */ | |
60 | 0x1d, 0x7f, /* video norm */ | |
61 | 0x20, 0xa0, /* clamping gain (working 0x50) */ | |
62 | 0x21, 0x22, | |
63 | 0x22, 0xf0, | |
64 | 0x23, 0xfe, | |
65 | 0x24, 0x3c, | |
66 | 0x25, 0x38, | |
67 | 0x26, 0x44, | |
68 | 0x27, 0x20, | |
69 | 0x28, 0x00, | |
70 | 0x29, 0x15, | |
71 | 0x2a, 0xa0, | |
72 | 0x2b, 0x44, | |
73 | 0x2c, 0x37, | |
74 | 0x2d, 0x00, | |
75 | 0x2e, 0xa5, /* burst PLL control (working: a9) */ | |
76 | 0x2f, 0xe0, /* 0xea is blue test frame -- 0xe0 for normal */ | |
77 | 0x31, 0x00, | |
78 | 0x33, 0x22, | |
79 | 0x34, 0x11, | |
80 | 0x35, 0x35, | |
81 | 0x3b, 0x05, | |
82 | 0x06, 0xc0, /* reset device */ | |
83 | 0x00, 0x00, /* Terminator (reg 0x00 is read-only) */ | |
84 | }; | |
85 | ||
86 | static int write_reg(struct i2c_client *client, u8 reg, u8 value) | |
87 | { | |
88 | return i2c_smbus_write_byte_data(client, reg, value); | |
89 | } | |
90 | ||
91 | static int write_regs(struct i2c_client *client, u8 *regs) | |
92 | { | |
93 | int i; | |
94 | ||
95 | for (i = 0; regs[i] != 0x00; i += 2) | |
96 | if (i2c_smbus_write_byte_data(client, regs[i], regs[i + 1]) < 0) | |
97 | return -1; | |
98 | return 0; | |
99 | } | |
100 | ||
101 | static int wis_tw9903_command(struct i2c_client *client, | |
102 | unsigned int cmd, void *arg) | |
103 | { | |
104 | struct wis_tw9903 *dec = i2c_get_clientdata(client); | |
105 | ||
106 | switch (cmd) { | |
df20d69e | 107 | case VIDIOC_S_INPUT: |
866b8695 GKH |
108 | { |
109 | int *input = arg; | |
110 | ||
111 | i2c_smbus_write_byte_data(client, 0x02, 0x40 | (*input << 1)); | |
112 | break; | |
113 | } | |
028d4c98 MCC |
114 | #if 0 |
115 | /* The scaler on this thing seems to be horribly broken */ | |
866b8695 GKH |
116 | case DECODER_SET_RESOLUTION: |
117 | { | |
118 | struct video_decoder_resolution *res = arg; | |
119 | /*int hscale = 256 * 720 / res->width;*/ | |
120 | int hscale = 256 * 720 / (res->width - (res->width > 704 ? 0 : 8)); | |
df20d69e | 121 | int vscale = 256 * (dec->norm & V4L2_STD_NTSC ? 240 : 288) |
866b8695 GKH |
122 | / res->height; |
123 | u8 regs[] = { | |
124 | 0x0d, vscale & 0xff, | |
125 | 0x0f, hscale & 0xff, | |
126 | 0x0e, ((vscale & 0xf00) >> 4) | ((hscale & 0xf00) >> 8), | |
127 | 0x06, 0xc0, /* reset device */ | |
128 | 0, 0, | |
129 | }; | |
130 | printk(KERN_DEBUG "vscale is %04x, hscale is %04x\n", | |
131 | vscale, hscale); | |
132 | /*write_regs(client, regs);*/ | |
133 | break; | |
134 | } | |
135 | #endif | |
df20d69e | 136 | case VIDIOC_S_STD: |
866b8695 | 137 | { |
df20d69e | 138 | v4l2_std_id *input = arg; |
866b8695 | 139 | u8 regs[] = { |
df20d69e RC |
140 | 0x05, *input & V4L2_STD_NTSC ? 0x80 : 0x00, |
141 | 0x07, *input & V4L2_STD_NTSC ? 0x02 : 0x12, | |
142 | 0x08, *input & V4L2_STD_NTSC ? 0x14 : 0x18, | |
143 | 0x09, *input & V4L2_STD_NTSC ? 0xf0 : 0x20, | |
866b8695 GKH |
144 | 0, 0, |
145 | }; | |
146 | write_regs(client, regs); | |
147 | dec->norm = *input; | |
148 | break; | |
149 | } | |
150 | case VIDIOC_QUERYCTRL: | |
151 | { | |
152 | struct v4l2_queryctrl *ctrl = arg; | |
153 | ||
154 | switch (ctrl->id) { | |
155 | case V4L2_CID_BRIGHTNESS: | |
156 | ctrl->type = V4L2_CTRL_TYPE_INTEGER; | |
157 | strncpy(ctrl->name, "Brightness", sizeof(ctrl->name)); | |
158 | ctrl->minimum = -128; | |
159 | ctrl->maximum = 127; | |
160 | ctrl->step = 1; | |
161 | ctrl->default_value = 0x00; | |
162 | ctrl->flags = 0; | |
163 | break; | |
164 | case V4L2_CID_CONTRAST: | |
165 | ctrl->type = V4L2_CTRL_TYPE_INTEGER; | |
166 | strncpy(ctrl->name, "Contrast", sizeof(ctrl->name)); | |
167 | ctrl->minimum = 0; | |
168 | ctrl->maximum = 255; | |
169 | ctrl->step = 1; | |
170 | ctrl->default_value = 0x60; | |
171 | ctrl->flags = 0; | |
172 | break; | |
173 | #if 0 | |
174 | /* I don't understand how the Chroma Gain registers work... */ | |
175 | case V4L2_CID_SATURATION: | |
176 | ctrl->type = V4L2_CTRL_TYPE_INTEGER; | |
177 | strncpy(ctrl->name, "Saturation", sizeof(ctrl->name)); | |
178 | ctrl->minimum = 0; | |
179 | ctrl->maximum = 127; | |
180 | ctrl->step = 1; | |
181 | ctrl->default_value = 64; | |
182 | ctrl->flags = 0; | |
183 | break; | |
184 | #endif | |
185 | case V4L2_CID_HUE: | |
186 | ctrl->type = V4L2_CTRL_TYPE_INTEGER; | |
187 | strncpy(ctrl->name, "Hue", sizeof(ctrl->name)); | |
188 | ctrl->minimum = -128; | |
189 | ctrl->maximum = 127; | |
190 | ctrl->step = 1; | |
191 | ctrl->default_value = 0; | |
192 | ctrl->flags = 0; | |
193 | break; | |
194 | } | |
195 | break; | |
196 | } | |
197 | case VIDIOC_S_CTRL: | |
198 | { | |
199 | struct v4l2_control *ctrl = arg; | |
200 | ||
201 | switch (ctrl->id) { | |
202 | case V4L2_CID_BRIGHTNESS: | |
203 | if (ctrl->value > 127) | |
204 | dec->brightness = 127; | |
205 | else if (ctrl->value < -128) | |
206 | dec->brightness = -128; | |
207 | else | |
208 | dec->brightness = ctrl->value; | |
209 | write_reg(client, 0x10, dec->brightness); | |
210 | break; | |
211 | case V4L2_CID_CONTRAST: | |
212 | if (ctrl->value > 255) | |
213 | dec->contrast = 255; | |
214 | else if (ctrl->value < 0) | |
215 | dec->contrast = 0; | |
216 | else | |
217 | dec->contrast = ctrl->value; | |
218 | write_reg(client, 0x11, dec->contrast); | |
219 | break; | |
220 | #if 0 | |
221 | case V4L2_CID_SATURATION: | |
222 | if (ctrl->value > 127) | |
223 | dec->saturation = 127; | |
224 | else if (ctrl->value < 0) | |
225 | dec->saturation = 0; | |
226 | else | |
227 | dec->saturation = ctrl->value; | |
228 | /*write_reg(client, 0x0c, dec->saturation);*/ | |
229 | break; | |
230 | #endif | |
231 | case V4L2_CID_HUE: | |
232 | if (ctrl->value > 127) | |
233 | dec->hue = 127; | |
234 | else if (ctrl->value < -128) | |
235 | dec->hue = -128; | |
236 | else | |
237 | dec->hue = ctrl->value; | |
238 | write_reg(client, 0x15, dec->hue); | |
239 | break; | |
240 | } | |
241 | break; | |
242 | } | |
243 | case VIDIOC_G_CTRL: | |
244 | { | |
245 | struct v4l2_control *ctrl = arg; | |
246 | ||
247 | switch (ctrl->id) { | |
248 | case V4L2_CID_BRIGHTNESS: | |
249 | ctrl->value = dec->brightness; | |
250 | break; | |
251 | case V4L2_CID_CONTRAST: | |
252 | ctrl->value = dec->contrast; | |
253 | break; | |
254 | #if 0 | |
255 | case V4L2_CID_SATURATION: | |
256 | ctrl->value = dec->saturation; | |
257 | break; | |
258 | #endif | |
259 | case V4L2_CID_HUE: | |
260 | ctrl->value = dec->hue; | |
261 | break; | |
262 | } | |
263 | break; | |
264 | } | |
265 | default: | |
266 | break; | |
267 | } | |
268 | return 0; | |
269 | } | |
270 | ||
7400516a JD |
271 | static int wis_tw9903_probe(struct i2c_client *client, |
272 | const struct i2c_device_id *id) | |
866b8695 | 273 | { |
7400516a | 274 | struct i2c_adapter *adapter = client->adapter; |
866b8695 GKH |
275 | struct wis_tw9903 *dec; |
276 | ||
277 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | |
7400516a | 278 | return -ENODEV; |
866b8695 GKH |
279 | |
280 | dec = kmalloc(sizeof(struct wis_tw9903), GFP_KERNEL); | |
7400516a | 281 | if (dec == NULL) |
866b8695 | 282 | return -ENOMEM; |
7400516a | 283 | |
df20d69e | 284 | dec->norm = V4L2_STD_NTSC; |
866b8695 GKH |
285 | dec->brightness = 0; |
286 | dec->contrast = 0x60; | |
287 | dec->hue = 0; | |
288 | i2c_set_clientdata(client, dec); | |
289 | ||
290 | printk(KERN_DEBUG | |
291 | "wis-tw9903: initializing TW9903 at address %d on %s\n", | |
7400516a | 292 | client->addr, adapter->name); |
866b8695 GKH |
293 | |
294 | if (write_regs(client, initial_registers) < 0) { | |
295 | printk(KERN_ERR "wis-tw9903: error initializing TW9903\n"); | |
866b8695 | 296 | kfree(dec); |
7400516a | 297 | return -ENODEV; |
866b8695 GKH |
298 | } |
299 | ||
866b8695 GKH |
300 | return 0; |
301 | } | |
302 | ||
7400516a | 303 | static int wis_tw9903_remove(struct i2c_client *client) |
866b8695 GKH |
304 | { |
305 | struct wis_tw9903 *dec = i2c_get_clientdata(client); | |
866b8695 | 306 | |
7400516a | 307 | i2c_set_clientdata(client, NULL); |
866b8695 GKH |
308 | kfree(dec); |
309 | return 0; | |
310 | } | |
311 | ||
b76a3263 | 312 | static const struct i2c_device_id wis_tw9903_id[] = { |
7400516a JD |
313 | { "wis_tw9903", 0 }, |
314 | { } | |
315 | }; | |
316 | ||
866b8695 GKH |
317 | static struct i2c_driver wis_tw9903_driver = { |
318 | .driver = { | |
319 | .name = "WIS TW9903 I2C driver", | |
320 | }, | |
7400516a JD |
321 | .probe = wis_tw9903_probe, |
322 | .remove = wis_tw9903_remove, | |
866b8695 | 323 | .command = wis_tw9903_command, |
7400516a | 324 | .id_table = wis_tw9903_id, |
866b8695 GKH |
325 | }; |
326 | ||
327 | static int __init wis_tw9903_init(void) | |
328 | { | |
7400516a | 329 | return i2c_add_driver(&wis_tw9903_driver); |
866b8695 GKH |
330 | } |
331 | ||
332 | static void __exit wis_tw9903_cleanup(void) | |
333 | { | |
866b8695 GKH |
334 | i2c_del_driver(&wis_tw9903_driver); |
335 | } | |
336 | ||
337 | module_init(wis_tw9903_init); | |
338 | module_exit(wis_tw9903_cleanup); | |
339 | ||
340 | MODULE_LICENSE("GPL v2"); |