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