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/videodev2.h>
34 #include <media/v4l2-device.h>
35 #include <media/v4l2-chip-ident.h>
36 #include <media/v4l2-i2c-drv.h>
38 MODULE_DESCRIPTION("Philips SAA7185 video encoder driver");
39 MODULE_AUTHOR("Dave Perks");
40 MODULE_LICENSE("GPL");
43 module_param(debug
, int, 0);
44 MODULE_PARM_DESC(debug
, "Debug level (0-1)");
47 /* ----------------------------------------------------------------------- */
50 struct v4l2_subdev sd
;
51 unsigned char reg
[128];
56 static inline struct saa7185
*to_saa7185(struct v4l2_subdev
*sd
)
58 return container_of(sd
, struct saa7185
, sd
);
61 /* ----------------------------------------------------------------------- */
63 static inline int saa7185_read(struct v4l2_subdev
*sd
)
65 struct i2c_client
*client
= v4l2_get_subdevdata(sd
);
67 return i2c_smbus_read_byte(client
);
70 static int saa7185_write(struct v4l2_subdev
*sd
, u8 reg
, u8 value
)
72 struct i2c_client
*client
= v4l2_get_subdevdata(sd
);
73 struct saa7185
*encoder
= to_saa7185(sd
);
75 v4l2_dbg(1, debug
, sd
, "%02x set to %02x\n", reg
, value
);
76 encoder
->reg
[reg
] = value
;
77 return i2c_smbus_write_byte_data(client
, reg
, value
);
80 static int saa7185_write_block(struct v4l2_subdev
*sd
,
81 const u8
*data
, unsigned int len
)
83 struct i2c_client
*client
= v4l2_get_subdevdata(sd
);
84 struct saa7185
*encoder
= to_saa7185(sd
);
88 /* the adv7175 has an autoincrement function, use it if
89 * the adapter understands raw I2C */
90 if (i2c_check_functionality(client
->adapter
, I2C_FUNC_I2C
)) {
91 /* do raw I2C, not smbus compatible */
97 block_data
[block_len
++] = reg
= data
[0];
99 block_data
[block_len
++] =
100 encoder
->reg
[reg
++] = data
[1];
103 } while (len
>= 2 && data
[0] == reg
&& block_len
< 32);
104 ret
= i2c_master_send(client
, block_data
, block_len
);
109 /* do some slow I2C emulation kind of thing */
112 ret
= saa7185_write(sd
, reg
, *data
++);
122 /* ----------------------------------------------------------------------- */
124 static const unsigned char init_common
[] = {
125 0x3a, 0x0f, /* CBENB=0, V656=0, VY2C=1,
126 * YUV2C=1, MY2C=1, MUV2C=1 */
128 0x42, 0x6b, /* OVLY0=107 */
129 0x43, 0x00, /* OVLU0=0 white */
130 0x44, 0x00, /* OVLV0=0 */
131 0x45, 0x22, /* OVLY1=34 */
132 0x46, 0xac, /* OVLU1=172 yellow */
133 0x47, 0x0e, /* OVLV1=14 */
134 0x48, 0x03, /* OVLY2=3 */
135 0x49, 0x1d, /* OVLU2=29 cyan */
136 0x4a, 0xac, /* OVLV2=172 */
137 0x4b, 0xf0, /* OVLY3=240 */
138 0x4c, 0xc8, /* OVLU3=200 green */
139 0x4d, 0xb9, /* OVLV3=185 */
140 0x4e, 0xd4, /* OVLY4=212 */
141 0x4f, 0x38, /* OVLU4=56 magenta */
142 0x50, 0x47, /* OVLV4=71 */
143 0x51, 0xc1, /* OVLY5=193 */
144 0x52, 0xe3, /* OVLU5=227 red */
145 0x53, 0x54, /* OVLV5=84 */
146 0x54, 0xa3, /* OVLY6=163 */
147 0x55, 0x54, /* OVLU6=84 blue */
148 0x56, 0xf2, /* OVLV6=242 */
149 0x57, 0x90, /* OVLY7=144 */
150 0x58, 0x00, /* OVLU7=0 black */
151 0x59, 0x00, /* OVLV7=0 */
153 0x5a, 0x00, /* CHPS=0 */
154 0x5b, 0x76, /* GAINU=118 */
155 0x5c, 0xa5, /* GAINV=165 */
156 0x5d, 0x3c, /* BLCKL=60 */
157 0x5e, 0x3a, /* BLNNL=58 */
158 0x5f, 0x3a, /* CCRS=0, BLNVB=58 */
159 0x60, 0x00, /* NULL */
161 /* 0x61 - 0x66 set according to norm */
163 0x67, 0x00, /* 0 : caption 1st byte odd field */
164 0x68, 0x00, /* 0 : caption 2nd byte odd field */
165 0x69, 0x00, /* 0 : caption 1st byte even field */
166 0x6a, 0x00, /* 0 : caption 2nd byte even field */
168 0x6b, 0x91, /* MODIN=2, PCREF=0, SCCLN=17 */
169 0x6c, 0x20, /* SRCV1=0, TRCV2=1, ORCV1=0, PRCV1=0,
170 * CBLF=0, ORCV2=0, PRCV2=0 */
171 0x6d, 0x00, /* SRCM1=0, CCEN=0 */
173 0x6e, 0x0e, /* HTRIG=0x005, approx. centered, at
175 0x6f, 0x00, /* HTRIG upper bits */
176 0x70, 0x20, /* PHRES=0, SBLN=1, VTRIG=0 */
178 /* The following should not be needed */
180 0x71, 0x15, /* BMRQ=0x115 */
181 0x72, 0x90, /* EMRQ=0x690 */
182 0x73, 0x61, /* EMRQ=0x690, BMRQ=0x115 */
183 0x74, 0x00, /* NULL */
184 0x75, 0x00, /* NULL */
185 0x76, 0x00, /* NULL */
186 0x77, 0x15, /* BRCV=0x115 */
187 0x78, 0x90, /* ERCV=0x690 */
188 0x79, 0x61, /* ERCV=0x690, BRCV=0x115 */
190 /* Field length controls */
192 0x7a, 0x70, /* FLC=0 */
194 /* The following should not be needed if SBLN = 1 */
196 0x7b, 0x16, /* FAL=22 */
197 0x7c, 0x35, /* LAL=244 */
198 0x7d, 0x20, /* LAL=244, FAL=22 */
201 static const unsigned char init_pal
[] = {
202 0x61, 0x1e, /* FISE=0, PAL=1, SCBW=1, RTCE=1,
203 * YGS=1, INPI=0, DOWN=0 */
204 0x62, 0xc8, /* DECTYP=1, BSTA=72 */
205 0x63, 0xcb, /* FSC0 */
206 0x64, 0x8a, /* FSC1 */
207 0x65, 0x09, /* FSC2 */
208 0x66, 0x2a, /* FSC3 */
211 static const unsigned char init_ntsc
[] = {
212 0x61, 0x1d, /* FISE=1, PAL=0, SCBW=1, RTCE=1,
213 * YGS=1, INPI=0, DOWN=0 */
214 0x62, 0xe6, /* DECTYP=1, BSTA=102 */
215 0x63, 0x1f, /* FSC0 */
216 0x64, 0x7c, /* FSC1 */
217 0x65, 0xf0, /* FSC2 */
218 0x66, 0x21, /* FSC3 */
222 static int saa7185_init(struct v4l2_subdev
*sd
, u32 val
)
224 struct saa7185
*encoder
= to_saa7185(sd
);
226 saa7185_write_block(sd
, init_common
, sizeof(init_common
));
227 if (encoder
->norm
& V4L2_STD_NTSC
)
228 saa7185_write_block(sd
, init_ntsc
, sizeof(init_ntsc
));
230 saa7185_write_block(sd
, init_pal
, sizeof(init_pal
));
234 static int saa7185_s_std_output(struct v4l2_subdev
*sd
, v4l2_std_id std
)
236 struct saa7185
*encoder
= to_saa7185(sd
);
238 if (std
& V4L2_STD_NTSC
)
239 saa7185_write_block(sd
, init_ntsc
, sizeof(init_ntsc
));
240 else if (std
& V4L2_STD_PAL
)
241 saa7185_write_block(sd
, init_pal
, sizeof(init_pal
));
248 static int saa7185_s_routing(struct v4l2_subdev
*sd
, const struct v4l2_routing
*route
)
250 struct saa7185
*encoder
= to_saa7185(sd
);
252 /* RJ: route->input = 0: input is from SA7111
253 route->input = 1: input is from ZR36060 */
255 switch (route
->input
) {
257 /* turn off colorbar */
258 saa7185_write(sd
, 0x3a, 0x0f);
259 /* Switch RTCE to 1 */
260 saa7185_write(sd
, 0x61, (encoder
->reg
[0x61] & 0xf7) | 0x08);
261 saa7185_write(sd
, 0x6e, 0x01);
265 /* turn off colorbar */
266 saa7185_write(sd
, 0x3a, 0x0f);
267 /* Switch RTCE to 0 */
268 saa7185_write(sd
, 0x61, (encoder
->reg
[0x61] & 0xf7) | 0x00);
269 /* SW: a slight sync problem... */
270 saa7185_write(sd
, 0x6e, 0x00);
274 /* turn on colorbar */
275 saa7185_write(sd
, 0x3a, 0x8f);
276 /* Switch RTCE to 0 */
277 saa7185_write(sd
, 0x61, (encoder
->reg
[0x61] & 0xf7) | 0x08);
278 /* SW: a slight sync problem... */
279 saa7185_write(sd
, 0x6e, 0x01);
288 static int saa7185_g_chip_ident(struct v4l2_subdev
*sd
, struct v4l2_dbg_chip_ident
*chip
)
290 struct i2c_client
*client
= v4l2_get_subdevdata(sd
);
292 return v4l2_chip_ident_i2c_client(client
, chip
, V4L2_IDENT_SAA7185
, 0);
295 /* ----------------------------------------------------------------------- */
297 static const struct v4l2_subdev_core_ops saa7185_core_ops
= {
298 .g_chip_ident
= saa7185_g_chip_ident
,
299 .init
= saa7185_init
,
302 static const struct v4l2_subdev_video_ops saa7185_video_ops
= {
303 .s_std_output
= saa7185_s_std_output
,
304 .s_routing
= saa7185_s_routing
,
307 static const struct v4l2_subdev_ops saa7185_ops
= {
308 .core
= &saa7185_core_ops
,
309 .video
= &saa7185_video_ops
,
313 /* ----------------------------------------------------------------------- */
315 static int saa7185_probe(struct i2c_client
*client
,
316 const struct i2c_device_id
*id
)
319 struct saa7185
*encoder
;
320 struct v4l2_subdev
*sd
;
322 /* Check if the adapter supports the needed features */
323 if (!i2c_check_functionality(client
->adapter
, I2C_FUNC_SMBUS_BYTE_DATA
))
326 v4l_info(client
, "chip found @ 0x%x (%s)\n",
327 client
->addr
<< 1, client
->adapter
->name
);
329 encoder
= kzalloc(sizeof(struct saa7185
), GFP_KERNEL
);
332 encoder
->norm
= V4L2_STD_NTSC
;
334 v4l2_i2c_subdev_init(sd
, client
, &saa7185_ops
);
336 i
= saa7185_write_block(sd
, init_common
, sizeof(init_common
));
338 i
= saa7185_write_block(sd
, init_ntsc
, sizeof(init_ntsc
));
340 v4l2_dbg(1, debug
, sd
, "init error %d\n", i
);
342 v4l2_dbg(1, debug
, sd
, "revision 0x%x\n",
343 saa7185_read(sd
) >> 5);
347 static int saa7185_remove(struct i2c_client
*client
)
349 struct v4l2_subdev
*sd
= i2c_get_clientdata(client
);
350 struct saa7185
*encoder
= to_saa7185(sd
);
352 v4l2_device_unregister_subdev(sd
);
353 /* SW: output off is active */
354 saa7185_write(sd
, 0x61, (encoder
->reg
[0x61]) | 0x40);
359 /* ----------------------------------------------------------------------- */
361 static const struct i2c_device_id saa7185_id
[] = {
365 MODULE_DEVICE_TABLE(i2c
, saa7185_id
);
367 static struct v4l2_i2c_driver_data v4l2_i2c_data
= {
369 .probe
= saa7185_probe
,
370 .remove
= saa7185_remove
,
371 .id_table
= saa7185_id
,