2 * saa7185 - Philips SAA7185B video encoder driver version 0.0.3
4 * Copyright (C) 1998 Dave Perks <dperks@ibm.net>
6 * Slight changes for video timing and attachment output by
7 * Wolfgang Scherr <scherr@net4you.net>
9 * Changes by Ronald Bultje <rbultje@ronald.bitfreak.net>
10 * - moved over to linux>=2.4.x i2c protocol (1/1/2003)
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 #include <linux/module.h>
28 #include <linux/types.h>
29 #include <linux/ioctl.h>
30 #include <asm/uaccess.h>
31 #include <linux/i2c.h>
32 #include <linux/i2c-id.h>
33 #include <linux/videodev.h>
34 #include <linux/video_encoder.h>
35 #include <media/v4l2-common.h>
36 #include <media/v4l2-i2c-drv-legacy.h>
38 MODULE_DESCRIPTION("Philips SAA7185 video encoder driver");
39 MODULE_AUTHOR("Dave Perks");
40 MODULE_LICENSE("GPL");
44 module_param(debug, int, 0);
45 MODULE_PARM_DESC(debug, "Debug level (0-1)");
47 /* ----------------------------------------------------------------------- */
50 unsigned char reg[128];
59 /* ----------------------------------------------------------------------- */
61 static inline int saa7185_read(struct i2c_client *client)
63 return i2c_smbus_read_byte(client);
66 static int saa7185_write(struct i2c_client *client, u8 reg, u8 value)
68 struct saa7185 *encoder = i2c_get_clientdata(client);
70 v4l_dbg(1, debug, client, "%02x set to %02x\n", reg, value);
71 encoder->reg[reg] = value;
72 return i2c_smbus_write_byte_data(client, reg, value);
75 static int saa7185_write_block(struct i2c_client *client,
76 const u8 *data, unsigned int len)
81 /* the adv7175 has an autoincrement function, use it if
82 * the adapter understands raw I2C */
83 if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
84 /* do raw I2C, not smbus compatible */
85 struct saa7185 *encoder = i2c_get_clientdata(client);
91 block_data[block_len++] = reg = data[0];
93 block_data[block_len++] =
94 encoder->reg[reg++] = data[1];
97 } while (len >= 2 && data[0] == reg && block_len < 32);
98 ret = i2c_master_send(client, block_data, block_len);
103 /* do some slow I2C emulation kind of thing */
106 ret = saa7185_write(client, reg, *data++);
116 /* ----------------------------------------------------------------------- */
118 static const unsigned char init_common[] = {
119 0x3a, 0x0f, /* CBENB=0, V656=0, VY2C=1,
120 * YUV2C=1, MY2C=1, MUV2C=1 */
122 0x42, 0x6b, /* OVLY0=107 */
123 0x43, 0x00, /* OVLU0=0 white */
124 0x44, 0x00, /* OVLV0=0 */
125 0x45, 0x22, /* OVLY1=34 */
126 0x46, 0xac, /* OVLU1=172 yellow */
127 0x47, 0x0e, /* OVLV1=14 */
128 0x48, 0x03, /* OVLY2=3 */
129 0x49, 0x1d, /* OVLU2=29 cyan */
130 0x4a, 0xac, /* OVLV2=172 */
131 0x4b, 0xf0, /* OVLY3=240 */
132 0x4c, 0xc8, /* OVLU3=200 green */
133 0x4d, 0xb9, /* OVLV3=185 */
134 0x4e, 0xd4, /* OVLY4=212 */
135 0x4f, 0x38, /* OVLU4=56 magenta */
136 0x50, 0x47, /* OVLV4=71 */
137 0x51, 0xc1, /* OVLY5=193 */
138 0x52, 0xe3, /* OVLU5=227 red */
139 0x53, 0x54, /* OVLV5=84 */
140 0x54, 0xa3, /* OVLY6=163 */
141 0x55, 0x54, /* OVLU6=84 blue */
142 0x56, 0xf2, /* OVLV6=242 */
143 0x57, 0x90, /* OVLY7=144 */
144 0x58, 0x00, /* OVLU7=0 black */
145 0x59, 0x00, /* OVLV7=0 */
147 0x5a, 0x00, /* CHPS=0 */
148 0x5b, 0x76, /* GAINU=118 */
149 0x5c, 0xa5, /* GAINV=165 */
150 0x5d, 0x3c, /* BLCKL=60 */
151 0x5e, 0x3a, /* BLNNL=58 */
152 0x5f, 0x3a, /* CCRS=0, BLNVB=58 */
153 0x60, 0x00, /* NULL */
155 /* 0x61 - 0x66 set according to norm */
157 0x67, 0x00, /* 0 : caption 1st byte odd field */
158 0x68, 0x00, /* 0 : caption 2nd byte odd field */
159 0x69, 0x00, /* 0 : caption 1st byte even field */
160 0x6a, 0x00, /* 0 : caption 2nd byte even field */
162 0x6b, 0x91, /* MODIN=2, PCREF=0, SCCLN=17 */
163 0x6c, 0x20, /* SRCV1=0, TRCV2=1, ORCV1=0, PRCV1=0,
164 * CBLF=0, ORCV2=0, PRCV2=0 */
165 0x6d, 0x00, /* SRCM1=0, CCEN=0 */
167 0x6e, 0x0e, /* HTRIG=0x005, approx. centered, at
169 0x6f, 0x00, /* HTRIG upper bits */
170 0x70, 0x20, /* PHRES=0, SBLN=1, VTRIG=0 */
172 /* The following should not be needed */
174 0x71, 0x15, /* BMRQ=0x115 */
175 0x72, 0x90, /* EMRQ=0x690 */
176 0x73, 0x61, /* EMRQ=0x690, BMRQ=0x115 */
177 0x74, 0x00, /* NULL */
178 0x75, 0x00, /* NULL */
179 0x76, 0x00, /* NULL */
180 0x77, 0x15, /* BRCV=0x115 */
181 0x78, 0x90, /* ERCV=0x690 */
182 0x79, 0x61, /* ERCV=0x690, BRCV=0x115 */
184 /* Field length controls */
186 0x7a, 0x70, /* FLC=0 */
188 /* The following should not be needed if SBLN = 1 */
190 0x7b, 0x16, /* FAL=22 */
191 0x7c, 0x35, /* LAL=244 */
192 0x7d, 0x20, /* LAL=244, FAL=22 */
195 static const unsigned char init_pal[] = {
196 0x61, 0x1e, /* FISE=0, PAL=1, SCBW=1, RTCE=1,
197 * YGS=1, INPI=0, DOWN=0 */
198 0x62, 0xc8, /* DECTYP=1, BSTA=72 */
199 0x63, 0xcb, /* FSC0 */
200 0x64, 0x8a, /* FSC1 */
201 0x65, 0x09, /* FSC2 */
202 0x66, 0x2a, /* FSC3 */
205 static const unsigned char init_ntsc[] = {
206 0x61, 0x1d, /* FISE=1, PAL=0, SCBW=1, RTCE=1,
207 * YGS=1, INPI=0, DOWN=0 */
208 0x62, 0xe6, /* DECTYP=1, BSTA=102 */
209 0x63, 0x1f, /* FSC0 */
210 0x64, 0x7c, /* FSC1 */
211 0x65, 0xf0, /* FSC2 */
212 0x66, 0x21, /* FSC3 */
215 static int saa7185_command(struct i2c_client *client, unsigned cmd, void *arg)
217 struct saa7185 *encoder = i2c_get_clientdata(client);
220 case VIDIOC_INT_INIT:
221 saa7185_write_block(client, init_common,
222 sizeof(init_common));
223 if (encoder->norm & V4L2_STD_NTSC)
224 saa7185_write_block(client, init_ntsc,
227 saa7185_write_block(client, init_pal,
231 case VIDIOC_INT_S_STD_OUTPUT:
233 v4l2_std_id *iarg = arg;
235 //saa7185_write_block(client, init_common, sizeof(init_common));
237 if (*iarg & V4L2_STD_NTSC)
238 saa7185_write_block(client, init_ntsc,
240 else if (*iarg & V4L2_STD_PAL)
241 saa7185_write_block(client, init_pal,
245 encoder->norm = *iarg;
249 case VIDIOC_INT_S_VIDEO_ROUTING:
251 struct v4l2_routing *route = arg;
253 /* RJ: route->input = 0: input is from SA7111
254 route->input = 1: input is from ZR36060 */
256 switch (route->input) {
258 /* turn off colorbar */
259 saa7185_write(client, 0x3a, 0x0f);
260 /* Switch RTCE to 1 */
261 saa7185_write(client, 0x61,
262 (encoder->reg[0x61] & 0xf7) | 0x08);
263 saa7185_write(client, 0x6e, 0x01);
267 /* turn off colorbar */
268 saa7185_write(client, 0x3a, 0x0f);
269 /* Switch RTCE to 0 */
270 saa7185_write(client, 0x61,
271 (encoder->reg[0x61] & 0xf7) | 0x00);
272 /* SW: a slight sync problem... */
273 saa7185_write(client, 0x6e, 0x00);
277 /* turn on colorbar */
278 saa7185_write(client, 0x3a, 0x8f);
279 /* Switch RTCE to 0 */
280 saa7185_write(client, 0x61,
281 (encoder->reg[0x61] & 0xf7) | 0x08);
282 /* SW: a slight sync problem... */
283 saa7185_write(client, 0x6e, 0x01);
299 /* ----------------------------------------------------------------------- */
301 static unsigned short normal_i2c[] = { 0x88 >> 1, I2C_CLIENT_END };
305 static int saa7185_probe(struct i2c_client *client,
306 const struct i2c_device_id *id)
309 struct saa7185 *encoder;
311 /* Check if the adapter supports the needed features */
312 if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
315 v4l_info(client, "chip found @ 0x%x (%s)\n",
316 client->addr << 1, client->adapter->name);
318 encoder = kzalloc(sizeof(struct saa7185), GFP_KERNEL);
321 encoder->norm = V4L2_STD_NTSC;
322 i2c_set_clientdata(client, encoder);
324 i = saa7185_write_block(client, init_common, sizeof(init_common));
326 i = saa7185_write_block(client, init_ntsc, sizeof(init_ntsc));
328 v4l_dbg(1, debug, client, "init error %d\n", i);
330 v4l_dbg(1, debug, client, "revision 0x%x\n",
331 saa7185_read(client) >> 5);
335 static int saa7185_remove(struct i2c_client *client)
337 struct saa7185 *encoder = i2c_get_clientdata(client);
339 saa7185_write(client, 0x61, (encoder->reg[0x61]) | 0x40); /* SW: output off is active */
340 //saa7185_write(client, 0x3a, (encoder->reg[0x3a]) | 0x80); /* SW: color bar */
346 /* ----------------------------------------------------------------------- */
348 static const struct i2c_device_id saa7185_id[] = {
352 MODULE_DEVICE_TABLE(i2c, saa7185_id);
354 static struct v4l2_i2c_driver_data v4l2_i2c_data = {
356 .driverid = I2C_DRIVERID_SAA7185B,
357 .command = saa7185_command,
358 .probe = saa7185_probe,
359 .remove = saa7185_remove,
360 .id_table = saa7185_id,