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];
60 /* ----------------------------------------------------------------------- */
62 static inline int saa7185_read(struct i2c_client
*client
)
64 return i2c_smbus_read_byte(client
);
67 static int saa7185_write(struct i2c_client
*client
, u8 reg
, u8 value
)
69 struct saa7185
*encoder
= i2c_get_clientdata(client
);
71 v4l_dbg(1, debug
, client
, "%02x set to %02x\n", reg
, value
);
72 encoder
->reg
[reg
] = value
;
73 return i2c_smbus_write_byte_data(client
, reg
, value
);
76 static int saa7185_write_block(struct i2c_client
*client
,
77 const u8
*data
, unsigned int len
)
82 /* the adv7175 has an autoincrement function, use it if
83 * the adapter understands raw I2C */
84 if (i2c_check_functionality(client
->adapter
, I2C_FUNC_I2C
)) {
85 /* do raw I2C, not smbus compatible */
86 struct saa7185
*encoder
= i2c_get_clientdata(client
);
92 block_data
[block_len
++] = reg
= data
[0];
94 block_data
[block_len
++] =
95 encoder
->reg
[reg
++] = data
[1];
98 } while (len
>= 2 && data
[0] == reg
&& block_len
< 32);
99 ret
= i2c_master_send(client
, block_data
, block_len
);
104 /* do some slow I2C emulation kind of thing */
107 ret
= saa7185_write(client
, reg
, *data
++);
117 /* ----------------------------------------------------------------------- */
119 static const unsigned char init_common
[] = {
120 0x3a, 0x0f, /* CBENB=0, V656=0, VY2C=1,
121 * YUV2C=1, MY2C=1, MUV2C=1 */
123 0x42, 0x6b, /* OVLY0=107 */
124 0x43, 0x00, /* OVLU0=0 white */
125 0x44, 0x00, /* OVLV0=0 */
126 0x45, 0x22, /* OVLY1=34 */
127 0x46, 0xac, /* OVLU1=172 yellow */
128 0x47, 0x0e, /* OVLV1=14 */
129 0x48, 0x03, /* OVLY2=3 */
130 0x49, 0x1d, /* OVLU2=29 cyan */
131 0x4a, 0xac, /* OVLV2=172 */
132 0x4b, 0xf0, /* OVLY3=240 */
133 0x4c, 0xc8, /* OVLU3=200 green */
134 0x4d, 0xb9, /* OVLV3=185 */
135 0x4e, 0xd4, /* OVLY4=212 */
136 0x4f, 0x38, /* OVLU4=56 magenta */
137 0x50, 0x47, /* OVLV4=71 */
138 0x51, 0xc1, /* OVLY5=193 */
139 0x52, 0xe3, /* OVLU5=227 red */
140 0x53, 0x54, /* OVLV5=84 */
141 0x54, 0xa3, /* OVLY6=163 */
142 0x55, 0x54, /* OVLU6=84 blue */
143 0x56, 0xf2, /* OVLV6=242 */
144 0x57, 0x90, /* OVLY7=144 */
145 0x58, 0x00, /* OVLU7=0 black */
146 0x59, 0x00, /* OVLV7=0 */
148 0x5a, 0x00, /* CHPS=0 */
149 0x5b, 0x76, /* GAINU=118 */
150 0x5c, 0xa5, /* GAINV=165 */
151 0x5d, 0x3c, /* BLCKL=60 */
152 0x5e, 0x3a, /* BLNNL=58 */
153 0x5f, 0x3a, /* CCRS=0, BLNVB=58 */
154 0x60, 0x00, /* NULL */
156 /* 0x61 - 0x66 set according to norm */
158 0x67, 0x00, /* 0 : caption 1st byte odd field */
159 0x68, 0x00, /* 0 : caption 2nd byte odd field */
160 0x69, 0x00, /* 0 : caption 1st byte even field */
161 0x6a, 0x00, /* 0 : caption 2nd byte even field */
163 0x6b, 0x91, /* MODIN=2, PCREF=0, SCCLN=17 */
164 0x6c, 0x20, /* SRCV1=0, TRCV2=1, ORCV1=0, PRCV1=0,
165 * CBLF=0, ORCV2=0, PRCV2=0 */
166 0x6d, 0x00, /* SRCM1=0, CCEN=0 */
168 0x6e, 0x0e, /* HTRIG=0x005, approx. centered, at
170 0x6f, 0x00, /* HTRIG upper bits */
171 0x70, 0x20, /* PHRES=0, SBLN=1, VTRIG=0 */
173 /* The following should not be needed */
175 0x71, 0x15, /* BMRQ=0x115 */
176 0x72, 0x90, /* EMRQ=0x690 */
177 0x73, 0x61, /* EMRQ=0x690, BMRQ=0x115 */
178 0x74, 0x00, /* NULL */
179 0x75, 0x00, /* NULL */
180 0x76, 0x00, /* NULL */
181 0x77, 0x15, /* BRCV=0x115 */
182 0x78, 0x90, /* ERCV=0x690 */
183 0x79, 0x61, /* ERCV=0x690, BRCV=0x115 */
185 /* Field length controls */
187 0x7a, 0x70, /* FLC=0 */
189 /* The following should not be needed if SBLN = 1 */
191 0x7b, 0x16, /* FAL=22 */
192 0x7c, 0x35, /* LAL=244 */
193 0x7d, 0x20, /* LAL=244, FAL=22 */
196 static const unsigned char init_pal
[] = {
197 0x61, 0x1e, /* FISE=0, PAL=1, SCBW=1, RTCE=1,
198 * YGS=1, INPI=0, DOWN=0 */
199 0x62, 0xc8, /* DECTYP=1, BSTA=72 */
200 0x63, 0xcb, /* FSC0 */
201 0x64, 0x8a, /* FSC1 */
202 0x65, 0x09, /* FSC2 */
203 0x66, 0x2a, /* FSC3 */
206 static const unsigned char init_ntsc
[] = {
207 0x61, 0x1d, /* FISE=1, PAL=0, SCBW=1, RTCE=1,
208 * YGS=1, INPI=0, DOWN=0 */
209 0x62, 0xe6, /* DECTYP=1, BSTA=102 */
210 0x63, 0x1f, /* FSC0 */
211 0x64, 0x7c, /* FSC1 */
212 0x65, 0xf0, /* FSC2 */
213 0x66, 0x21, /* FSC3 */
216 static int saa7185_command(struct i2c_client
*client
, unsigned cmd
, void *arg
)
218 struct saa7185
*encoder
= i2c_get_clientdata(client
);
222 saa7185_write_block(client
, init_common
,
223 sizeof(init_common
));
224 switch (encoder
->norm
) {
226 case VIDEO_MODE_NTSC
:
227 saa7185_write_block(client
, init_ntsc
,
232 saa7185_write_block(client
, init_pal
,
238 case ENCODER_GET_CAPABILITIES
:
240 struct video_encoder_capability
*cap
= arg
;
243 VIDEO_ENCODER_PAL
| VIDEO_ENCODER_NTSC
|
244 VIDEO_ENCODER_SECAM
| VIDEO_ENCODER_CCIR
;
250 case ENCODER_SET_NORM
:
254 //saa7185_write_block(client, init_common, sizeof(init_common));
257 case VIDEO_MODE_NTSC
:
258 saa7185_write_block(client
, init_ntsc
,
263 saa7185_write_block(client
, init_pal
,
267 case VIDEO_MODE_SECAM
:
271 encoder
->norm
= *iarg
;
275 case ENCODER_SET_INPUT
:
279 /* RJ: *iarg = 0: input is from SA7111
280 *iarg = 1: input is from ZR36060 */
284 /* Switch RTCE to 1 */
285 saa7185_write(client
, 0x61,
286 (encoder
->reg
[0x61] & 0xf7) | 0x08);
287 saa7185_write(client
, 0x6e, 0x01);
291 /* Switch RTCE to 0 */
292 saa7185_write(client
, 0x61,
293 (encoder
->reg
[0x61] & 0xf7) | 0x00);
294 /* SW: a slight sync problem... */
295 saa7185_write(client
, 0x6e, 0x00);
304 case ENCODER_SET_OUTPUT
:
308 /* not much choice of outputs */
314 case ENCODER_ENABLE_OUTPUT
:
318 encoder
->enable
= !!*iarg
;
319 saa7185_write(client
, 0x61,
320 (encoder
->reg
[0x61] & 0xbf) |
321 (encoder
->enable
? 0x00 : 0x40));
332 /* ----------------------------------------------------------------------- */
334 static unsigned short normal_i2c
[] = { 0x88 >> 1, I2C_CLIENT_END
};
338 static int saa7185_probe(struct i2c_client
*client
,
339 const struct i2c_device_id
*id
)
342 struct saa7185
*encoder
;
344 /* Check if the adapter supports the needed features */
345 if (!i2c_check_functionality(client
->adapter
, I2C_FUNC_SMBUS_BYTE_DATA
))
348 v4l_info(client
, "chip found @ 0x%x (%s)\n",
349 client
->addr
<< 1, client
->adapter
->name
);
351 encoder
= kzalloc(sizeof(struct saa7185
), GFP_KERNEL
);
354 encoder
->norm
= VIDEO_MODE_NTSC
;
356 i2c_set_clientdata(client
, encoder
);
358 i
= saa7185_write_block(client
, init_common
, sizeof(init_common
));
360 i
= saa7185_write_block(client
, init_ntsc
, sizeof(init_ntsc
));
362 v4l_dbg(1, debug
, client
, "init error %d\n", i
);
364 v4l_dbg(1, debug
, client
, "revision 0x%x\n",
365 saa7185_read(client
) >> 5);
369 static int saa7185_remove(struct i2c_client
*client
)
371 struct saa7185
*encoder
= i2c_get_clientdata(client
);
373 saa7185_write(client
, 0x61, (encoder
->reg
[0x61]) | 0x40); /* SW: output off is active */
374 //saa7185_write(client, 0x3a, (encoder->reg[0x3a]) | 0x80); /* SW: color bar */
380 /* ----------------------------------------------------------------------- */
382 static const struct i2c_device_id saa7185_id
[] = {
386 MODULE_DEVICE_TABLE(i2c
, saa7185_id
);
388 static struct v4l2_i2c_driver_data v4l2_i2c_data
= {
390 .driverid
= I2C_DRIVERID_SAA7185B
,
391 .command
= saa7185_command
,
392 .probe
= saa7185_probe
,
393 .remove
= saa7185_remove
,
394 .id_table
= saa7185_id
,