]>
Commit | Line | Data |
---|---|---|
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 | 57 | |
107063c6 | 58 | v4l2_std_id norm; |
1da177e4 LT |
59 | }; |
60 | ||
1da177e4 LT |
61 | /* ----------------------------------------------------------------------- */ |
62 | ||
a8c26dfe | 63 | static inline int bt856_write(struct i2c_client *client, u8 reg, u8 value) |
1da177e4 LT |
64 | { |
65 | struct bt856 *encoder = i2c_get_clientdata(client); | |
66 | ||
187565c4 | 67 | encoder->reg[reg - BT856_REG_OFFSET] = value; |
1da177e4 LT |
68 | return i2c_smbus_write_byte_data(client, reg, value); |
69 | } | |
70 | ||
a8c26dfe | 71 | static inline int bt856_setbit(struct i2c_client *client, u8 reg, u8 bit, u8 value) |
1da177e4 LT |
72 | { |
73 | struct bt856 *encoder = i2c_get_clientdata(client); | |
74 | ||
75 | return bt856_write(client, reg, | |
a8c26dfe HV |
76 | (encoder->reg[reg - BT856_REG_OFFSET] & ~(1 << bit)) | |
77 | (value ? (1 << bit) : 0)); | |
1da177e4 LT |
78 | } |
79 | ||
a8c26dfe | 80 | static void bt856_dump(struct i2c_client *client) |
1da177e4 LT |
81 | { |
82 | int i; | |
83 | struct bt856 *encoder = i2c_get_clientdata(client); | |
84 | ||
a8c26dfe | 85 | v4l_info(client, "register dump:\n"); |
f49a5eae | 86 | for (i = 0; i < BT856_NR_REG; i += 2) |
a8c26dfe HV |
87 | printk(KERN_CONT " %02x", encoder->reg[i]); |
88 | printk(KERN_CONT "\n"); | |
1da177e4 LT |
89 | } |
90 | ||
91 | /* ----------------------------------------------------------------------- */ | |
92 | ||
a8c26dfe | 93 | static int bt856_command(struct i2c_client *client, unsigned cmd, void *arg) |
1da177e4 LT |
94 | { |
95 | struct bt856 *encoder = i2c_get_clientdata(client); | |
96 | ||
97 | switch (cmd) { | |
107063c6 | 98 | case VIDIOC_INT_INIT: |
1da177e4 | 99 | /* This is just for testing!!! */ |
a8c26dfe | 100 | v4l_dbg(1, debug, client, "init\n"); |
1da177e4 LT |
101 | bt856_write(client, 0xdc, 0x18); |
102 | bt856_write(client, 0xda, 0); | |
103 | bt856_write(client, 0xde, 0); | |
104 | ||
105 | bt856_setbit(client, 0xdc, 3, 1); | |
106 | //bt856_setbit(client, 0xdc, 6, 0); | |
107 | bt856_setbit(client, 0xdc, 4, 1); | |
108 | ||
107063c6 | 109 | if (encoder->norm & V4L2_STD_NTSC) |
1da177e4 | 110 | bt856_setbit(client, 0xdc, 2, 0); |
107063c6 | 111 | else |
1da177e4 | 112 | bt856_setbit(client, 0xdc, 2, 1); |
1da177e4 LT |
113 | |
114 | bt856_setbit(client, 0xdc, 1, 1); | |
115 | bt856_setbit(client, 0xde, 4, 0); | |
116 | bt856_setbit(client, 0xde, 3, 1); | |
117 | if (debug != 0) | |
118 | bt856_dump(client); | |
119 | break; | |
120 | ||
107063c6 | 121 | case VIDIOC_INT_S_STD_OUTPUT: |
1da177e4 | 122 | { |
107063c6 | 123 | v4l2_std_id *iarg = arg; |
1da177e4 | 124 | |
107063c6 | 125 | v4l_dbg(1, debug, client, "set norm %llx\n", *iarg); |
1da177e4 | 126 | |
107063c6 | 127 | if (*iarg & V4L2_STD_NTSC) { |
1da177e4 | 128 | bt856_setbit(client, 0xdc, 2, 0); |
107063c6 | 129 | } else if (*iarg & V4L2_STD_PAL) { |
1da177e4 LT |
130 | bt856_setbit(client, 0xdc, 2, 1); |
131 | bt856_setbit(client, 0xda, 0, 0); | |
132 | //bt856_setbit(client, 0xda, 0, 1); | |
107063c6 | 133 | } else { |
1da177e4 | 134 | return -EINVAL; |
1da177e4 LT |
135 | } |
136 | encoder->norm = *iarg; | |
137 | if (debug != 0) | |
138 | bt856_dump(client); | |
1da177e4 | 139 | break; |
a8c26dfe | 140 | } |
1da177e4 | 141 | |
107063c6 | 142 | case VIDIOC_INT_S_VIDEO_ROUTING: |
1da177e4 | 143 | { |
107063c6 | 144 | struct v4l2_routing *route = arg; |
1da177e4 | 145 | |
107063c6 | 146 | v4l_dbg(1, debug, client, "set input %d\n", route->input); |
1da177e4 LT |
147 | |
148 | /* We only have video bus. | |
107063c6 HV |
149 | * route->input= 0: input is from bt819 |
150 | * route->input= 1: input is from ZR36060 */ | |
151 | switch (route->input) { | |
1da177e4 LT |
152 | case 0: |
153 | bt856_setbit(client, 0xde, 4, 0); | |
154 | bt856_setbit(client, 0xde, 3, 1); | |
155 | bt856_setbit(client, 0xdc, 3, 1); | |
156 | bt856_setbit(client, 0xdc, 6, 0); | |
157 | break; | |
158 | case 1: | |
159 | bt856_setbit(client, 0xde, 4, 0); | |
160 | bt856_setbit(client, 0xde, 3, 1); | |
161 | bt856_setbit(client, 0xdc, 3, 1); | |
162 | bt856_setbit(client, 0xdc, 6, 1); | |
163 | break; | |
164 | case 2: // Color bar | |
165 | bt856_setbit(client, 0xdc, 3, 0); | |
166 | bt856_setbit(client, 0xde, 4, 1); | |
167 | break; | |
168 | default: | |
169 | return -EINVAL; | |
1da177e4 LT |
170 | } |
171 | ||
172 | if (debug != 0) | |
173 | bt856_dump(client); | |
1da177e4 | 174 | break; |
a8c26dfe | 175 | } |
1da177e4 | 176 | |
1da177e4 LT |
177 | default: |
178 | return -EINVAL; | |
179 | } | |
180 | ||
181 | return 0; | |
182 | } | |
183 | ||
184 | /* ----------------------------------------------------------------------- */ | |
185 | ||
a8c26dfe | 186 | static unsigned short normal_i2c[] = { 0x88 >> 1, I2C_CLIENT_END }; |
1da177e4 | 187 | |
a8c26dfe | 188 | I2C_CLIENT_INSMOD; |
1da177e4 | 189 | |
a8c26dfe HV |
190 | static int bt856_probe(struct i2c_client *client, |
191 | const struct i2c_device_id *id) | |
1da177e4 | 192 | { |
1da177e4 LT |
193 | struct bt856 *encoder; |
194 | ||
1da177e4 | 195 | /* Check if the adapter supports the needed features */ |
a8c26dfe HV |
196 | if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
197 | return -ENODEV; | |
1da177e4 | 198 | |
a8c26dfe HV |
199 | v4l_info(client, "chip found @ 0x%x (%s)\n", |
200 | client->addr << 1, client->adapter->name); | |
1da177e4 | 201 | |
7408187d | 202 | encoder = kzalloc(sizeof(struct bt856), GFP_KERNEL); |
a8c26dfe | 203 | if (encoder == NULL) |
1da177e4 | 204 | return -ENOMEM; |
107063c6 | 205 | encoder->norm = V4L2_STD_NTSC; |
1da177e4 LT |
206 | i2c_set_clientdata(client, encoder); |
207 | ||
1da177e4 LT |
208 | bt856_write(client, 0xdc, 0x18); |
209 | bt856_write(client, 0xda, 0); | |
210 | bt856_write(client, 0xde, 0); | |
211 | ||
212 | bt856_setbit(client, 0xdc, 3, 1); | |
213 | //bt856_setbit(client, 0xdc, 6, 0); | |
214 | bt856_setbit(client, 0xdc, 4, 1); | |
215 | ||
107063c6 | 216 | if (encoder->norm & V4L2_STD_NTSC) |
1da177e4 | 217 | bt856_setbit(client, 0xdc, 2, 0); |
107063c6 | 218 | else |
1da177e4 | 219 | bt856_setbit(client, 0xdc, 2, 1); |
1da177e4 LT |
220 | |
221 | bt856_setbit(client, 0xdc, 1, 1); | |
222 | bt856_setbit(client, 0xde, 4, 0); | |
223 | bt856_setbit(client, 0xde, 3, 1); | |
224 | ||
225 | if (debug != 0) | |
226 | bt856_dump(client); | |
1da177e4 LT |
227 | return 0; |
228 | } | |
229 | ||
a8c26dfe | 230 | static int bt856_remove(struct i2c_client *client) |
1da177e4 | 231 | { |
a8c26dfe | 232 | kfree(i2c_get_clientdata(client)); |
1da177e4 LT |
233 | return 0; |
234 | } | |
235 | ||
a8c26dfe HV |
236 | static const struct i2c_device_id bt856_id[] = { |
237 | { "bt856", 0 }, | |
238 | { } | |
239 | }; | |
240 | MODULE_DEVICE_TABLE(i2c, bt856_id); | |
1da177e4 | 241 | |
a8c26dfe HV |
242 | static struct v4l2_i2c_driver_data v4l2_i2c_data = { |
243 | .name = "bt856", | |
244 | .driverid = I2C_DRIVERID_BT856, | |
1da177e4 | 245 | .command = bt856_command, |
a8c26dfe HV |
246 | .probe = bt856_probe, |
247 | .remove = bt856_remove, | |
248 | .id_table = bt856_id, | |
1da177e4 | 249 | }; |