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Commit | Line | Data |
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d56410e0 | 1 | /* |
1da177e4 LT |
2 | * bt856 - BT856A Digital Video Encoder (Rockwell Part) |
3 | * | |
4 | * Copyright (C) 1999 Mike Bernson <mike@mlb.org> | |
5 | * Copyright (C) 1998 Dave Perks <dperks@ibm.net> | |
6 | * | |
7 | * Modifications for LML33/DC10plus unified driver | |
8 | * Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx> | |
9 | * | |
10 | * This code was modify/ported from the saa7111 driver written | |
11 | * by Dave Perks. | |
12 | * | |
13 | * Changes by Ronald Bultje <rbultje@ronald.bitfreak.net> | |
14 | * - moved over to linux>=2.4.x i2c protocol (9/9/2002) | |
15 | * | |
16 | * This program is free software; you can redistribute it and/or modify | |
17 | * it under the terms of the GNU General Public License as published by | |
18 | * the Free Software Foundation; either version 2 of the License, or | |
19 | * (at your option) any later version. | |
20 | * | |
21 | * This program is distributed in the hope that it will be useful, | |
22 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
23 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
24 | * GNU General Public License for more details. | |
25 | * | |
26 | * You should have received a copy of the GNU General Public License | |
27 | * along with this program; if not, write to the Free Software | |
28 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
29 | */ | |
30 | ||
31 | #include <linux/module.h> | |
18f3fa1e | 32 | #include <linux/types.h> |
a8c26dfe | 33 | #include <linux/ioctl.h> |
18f3fa1e | 34 | #include <asm/uaccess.h> |
a8c26dfe HV |
35 | #include <linux/i2c.h> |
36 | #include <linux/i2c-id.h> | |
1da177e4 | 37 | #include <linux/videodev.h> |
a8c26dfe HV |
38 | #include <linux/video_encoder.h> |
39 | #include <media/v4l2-common.h> | |
40 | #include <media/v4l2-i2c-drv-legacy.h> | |
1da177e4 LT |
41 | |
42 | MODULE_DESCRIPTION("Brooktree-856A video encoder driver"); | |
43 | MODULE_AUTHOR("Mike Bernson & Dave Perks"); | |
44 | MODULE_LICENSE("GPL"); | |
45 | ||
ff699e6b | 46 | static int debug; |
1da177e4 LT |
47 | module_param(debug, int, 0); |
48 | MODULE_PARM_DESC(debug, "Debug level (0-1)"); | |
49 | ||
1da177e4 LT |
50 | /* ----------------------------------------------------------------------- */ |
51 | ||
187565c4 HV |
52 | #define BT856_REG_OFFSET 0xDA |
53 | #define BT856_NR_REG 6 | |
1da177e4 LT |
54 | |
55 | struct bt856 { | |
f49a5eae | 56 | unsigned char reg[BT856_NR_REG]; |
1da177e4 LT |
57 | |
58 | int norm; | |
59 | int enable; | |
1da177e4 LT |
60 | }; |
61 | ||
1da177e4 LT |
62 | /* ----------------------------------------------------------------------- */ |
63 | ||
a8c26dfe | 64 | static inline int bt856_write(struct i2c_client *client, u8 reg, u8 value) |
1da177e4 LT |
65 | { |
66 | struct bt856 *encoder = i2c_get_clientdata(client); | |
67 | ||
187565c4 | 68 | encoder->reg[reg - BT856_REG_OFFSET] = value; |
1da177e4 LT |
69 | return i2c_smbus_write_byte_data(client, reg, value); |
70 | } | |
71 | ||
a8c26dfe | 72 | static inline int bt856_setbit(struct i2c_client *client, u8 reg, u8 bit, u8 value) |
1da177e4 LT |
73 | { |
74 | struct bt856 *encoder = i2c_get_clientdata(client); | |
75 | ||
76 | return bt856_write(client, reg, | |
a8c26dfe HV |
77 | (encoder->reg[reg - BT856_REG_OFFSET] & ~(1 << bit)) | |
78 | (value ? (1 << bit) : 0)); | |
1da177e4 LT |
79 | } |
80 | ||
a8c26dfe | 81 | static void bt856_dump(struct i2c_client *client) |
1da177e4 LT |
82 | { |
83 | int i; | |
84 | struct bt856 *encoder = i2c_get_clientdata(client); | |
85 | ||
a8c26dfe | 86 | v4l_info(client, "register dump:\n"); |
f49a5eae | 87 | for (i = 0; i < BT856_NR_REG; i += 2) |
a8c26dfe HV |
88 | printk(KERN_CONT " %02x", encoder->reg[i]); |
89 | printk(KERN_CONT "\n"); | |
1da177e4 LT |
90 | } |
91 | ||
92 | /* ----------------------------------------------------------------------- */ | |
93 | ||
a8c26dfe | 94 | static int bt856_command(struct i2c_client *client, unsigned cmd, void *arg) |
1da177e4 LT |
95 | { |
96 | struct bt856 *encoder = i2c_get_clientdata(client); | |
97 | ||
98 | switch (cmd) { | |
1da177e4 LT |
99 | case 0: |
100 | /* This is just for testing!!! */ | |
a8c26dfe | 101 | v4l_dbg(1, debug, client, "init\n"); |
1da177e4 LT |
102 | bt856_write(client, 0xdc, 0x18); |
103 | bt856_write(client, 0xda, 0); | |
104 | bt856_write(client, 0xde, 0); | |
105 | ||
106 | bt856_setbit(client, 0xdc, 3, 1); | |
107 | //bt856_setbit(client, 0xdc, 6, 0); | |
108 | bt856_setbit(client, 0xdc, 4, 1); | |
109 | ||
110 | switch (encoder->norm) { | |
1da177e4 LT |
111 | case VIDEO_MODE_NTSC: |
112 | bt856_setbit(client, 0xdc, 2, 0); | |
113 | break; | |
114 | ||
115 | case VIDEO_MODE_PAL: | |
116 | bt856_setbit(client, 0xdc, 2, 1); | |
117 | break; | |
118 | } | |
119 | ||
120 | bt856_setbit(client, 0xdc, 1, 1); | |
121 | bt856_setbit(client, 0xde, 4, 0); | |
122 | bt856_setbit(client, 0xde, 3, 1); | |
123 | if (debug != 0) | |
124 | bt856_dump(client); | |
125 | break; | |
126 | ||
127 | case ENCODER_GET_CAPABILITIES: | |
128 | { | |
129 | struct video_encoder_capability *cap = arg; | |
130 | ||
a8c26dfe | 131 | v4l_dbg(1, debug, client, "get capabilities\n"); |
1da177e4 LT |
132 | |
133 | cap->flags = VIDEO_ENCODER_PAL | | |
134 | VIDEO_ENCODER_NTSC | | |
135 | VIDEO_ENCODER_CCIR; | |
136 | cap->inputs = 2; | |
137 | cap->outputs = 1; | |
1da177e4 | 138 | break; |
a8c26dfe | 139 | } |
1da177e4 LT |
140 | |
141 | case ENCODER_SET_NORM: | |
142 | { | |
143 | int *iarg = arg; | |
144 | ||
a8c26dfe | 145 | v4l_dbg(1, debug, client, "set norm %d\n", *iarg); |
1da177e4 LT |
146 | |
147 | switch (*iarg) { | |
1da177e4 LT |
148 | case VIDEO_MODE_NTSC: |
149 | bt856_setbit(client, 0xdc, 2, 0); | |
150 | break; | |
151 | ||
152 | case VIDEO_MODE_PAL: | |
153 | bt856_setbit(client, 0xdc, 2, 1); | |
154 | bt856_setbit(client, 0xda, 0, 0); | |
155 | //bt856_setbit(client, 0xda, 0, 1); | |
156 | break; | |
157 | ||
158 | default: | |
159 | return -EINVAL; | |
1da177e4 LT |
160 | } |
161 | encoder->norm = *iarg; | |
162 | if (debug != 0) | |
163 | bt856_dump(client); | |
1da177e4 | 164 | break; |
a8c26dfe | 165 | } |
1da177e4 LT |
166 | |
167 | case ENCODER_SET_INPUT: | |
168 | { | |
169 | int *iarg = arg; | |
170 | ||
a8c26dfe | 171 | v4l_dbg(1, debug, client, "set input %d\n", *iarg); |
1da177e4 LT |
172 | |
173 | /* We only have video bus. | |
174 | * iarg = 0: input is from bt819 | |
175 | * iarg = 1: input is from ZR36060 */ | |
1da177e4 | 176 | switch (*iarg) { |
1da177e4 LT |
177 | case 0: |
178 | bt856_setbit(client, 0xde, 4, 0); | |
179 | bt856_setbit(client, 0xde, 3, 1); | |
180 | bt856_setbit(client, 0xdc, 3, 1); | |
181 | bt856_setbit(client, 0xdc, 6, 0); | |
182 | break; | |
183 | case 1: | |
184 | bt856_setbit(client, 0xde, 4, 0); | |
185 | bt856_setbit(client, 0xde, 3, 1); | |
186 | bt856_setbit(client, 0xdc, 3, 1); | |
187 | bt856_setbit(client, 0xdc, 6, 1); | |
188 | break; | |
189 | case 2: // Color bar | |
190 | bt856_setbit(client, 0xdc, 3, 0); | |
191 | bt856_setbit(client, 0xde, 4, 1); | |
192 | break; | |
193 | default: | |
194 | return -EINVAL; | |
1da177e4 LT |
195 | } |
196 | ||
197 | if (debug != 0) | |
198 | bt856_dump(client); | |
1da177e4 | 199 | break; |
a8c26dfe | 200 | } |
1da177e4 LT |
201 | |
202 | case ENCODER_SET_OUTPUT: | |
203 | { | |
204 | int *iarg = arg; | |
205 | ||
a8c26dfe | 206 | v4l_dbg(1, debug, client, "set output %d\n", *iarg); |
1da177e4 LT |
207 | |
208 | /* not much choice of outputs */ | |
a8c26dfe | 209 | if (*iarg != 0) |
1da177e4 | 210 | return -EINVAL; |
1da177e4 | 211 | break; |
a8c26dfe | 212 | } |
1da177e4 LT |
213 | |
214 | case ENCODER_ENABLE_OUTPUT: | |
215 | { | |
216 | int *iarg = arg; | |
217 | ||
218 | encoder->enable = !!*iarg; | |
219 | ||
a8c26dfe | 220 | v4l_dbg(1, debug, client, "enable output %d\n", encoder->enable); |
1da177e4 | 221 | break; |
a8c26dfe | 222 | } |
1da177e4 LT |
223 | |
224 | default: | |
225 | return -EINVAL; | |
226 | } | |
227 | ||
228 | return 0; | |
229 | } | |
230 | ||
231 | /* ----------------------------------------------------------------------- */ | |
232 | ||
a8c26dfe | 233 | static unsigned short normal_i2c[] = { 0x88 >> 1, I2C_CLIENT_END }; |
1da177e4 | 234 | |
a8c26dfe | 235 | I2C_CLIENT_INSMOD; |
1da177e4 | 236 | |
a8c26dfe HV |
237 | static int bt856_probe(struct i2c_client *client, |
238 | const struct i2c_device_id *id) | |
1da177e4 | 239 | { |
1da177e4 LT |
240 | struct bt856 *encoder; |
241 | ||
1da177e4 | 242 | /* Check if the adapter supports the needed features */ |
a8c26dfe HV |
243 | if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
244 | return -ENODEV; | |
1da177e4 | 245 | |
a8c26dfe HV |
246 | v4l_info(client, "chip found @ 0x%x (%s)\n", |
247 | client->addr << 1, client->adapter->name); | |
1da177e4 | 248 | |
7408187d | 249 | encoder = kzalloc(sizeof(struct bt856), GFP_KERNEL); |
a8c26dfe | 250 | if (encoder == NULL) |
1da177e4 | 251 | return -ENOMEM; |
1da177e4 LT |
252 | encoder->norm = VIDEO_MODE_NTSC; |
253 | encoder->enable = 1; | |
254 | i2c_set_clientdata(client, encoder); | |
255 | ||
1da177e4 LT |
256 | bt856_write(client, 0xdc, 0x18); |
257 | bt856_write(client, 0xda, 0); | |
258 | bt856_write(client, 0xde, 0); | |
259 | ||
260 | bt856_setbit(client, 0xdc, 3, 1); | |
261 | //bt856_setbit(client, 0xdc, 6, 0); | |
262 | bt856_setbit(client, 0xdc, 4, 1); | |
263 | ||
264 | switch (encoder->norm) { | |
265 | ||
266 | case VIDEO_MODE_NTSC: | |
267 | bt856_setbit(client, 0xdc, 2, 0); | |
268 | break; | |
269 | ||
270 | case VIDEO_MODE_PAL: | |
271 | bt856_setbit(client, 0xdc, 2, 1); | |
272 | break; | |
273 | } | |
274 | ||
275 | bt856_setbit(client, 0xdc, 1, 1); | |
276 | bt856_setbit(client, 0xde, 4, 0); | |
277 | bt856_setbit(client, 0xde, 3, 1); | |
278 | ||
279 | if (debug != 0) | |
280 | bt856_dump(client); | |
1da177e4 LT |
281 | return 0; |
282 | } | |
283 | ||
a8c26dfe | 284 | static int bt856_remove(struct i2c_client *client) |
1da177e4 | 285 | { |
a8c26dfe | 286 | kfree(i2c_get_clientdata(client)); |
1da177e4 LT |
287 | return 0; |
288 | } | |
289 | ||
a8c26dfe HV |
290 | static const struct i2c_device_id bt856_id[] = { |
291 | { "bt856", 0 }, | |
292 | { } | |
293 | }; | |
294 | MODULE_DEVICE_TABLE(i2c, bt856_id); | |
1da177e4 | 295 | |
a8c26dfe HV |
296 | static struct v4l2_i2c_driver_data v4l2_i2c_data = { |
297 | .name = "bt856", | |
298 | .driverid = I2C_DRIVERID_BT856, | |
1da177e4 | 299 | .command = bt856_command, |
a8c26dfe HV |
300 | .probe = bt856_probe, |
301 | .remove = bt856_remove, | |
302 | .id_table = bt856_id, | |
1da177e4 | 303 | }; |