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/slab.h>
30 #include <linux/ioctl.h>
31 #include <asm/uaccess.h>
32 #include <linux/i2c.h>
33 #include <linux/i2c-id.h>
34 #include <linux/videodev2.h>
35 #include <media/v4l2-device.h>
36 #include <media/v4l2-chip-ident.h>
37 #include <media/v4l2-i2c-drv.h>
39 MODULE_DESCRIPTION("Philips SAA7185 video encoder driver");
40 MODULE_AUTHOR("Dave Perks");
41 MODULE_LICENSE("GPL");
44 module_param(debug
, int, 0);
45 MODULE_PARM_DESC(debug
, "Debug level (0-1)");
48 /* ----------------------------------------------------------------------- */
51 struct v4l2_subdev sd
;
52 unsigned char reg
[128];
57 static inline struct saa7185
*to_saa7185(struct v4l2_subdev
*sd
)
59 return container_of(sd
, struct saa7185
, sd
);
62 /* ----------------------------------------------------------------------- */
64 static inline int saa7185_read(struct v4l2_subdev
*sd
)
66 struct i2c_client
*client
= v4l2_get_subdevdata(sd
);
68 return i2c_smbus_read_byte(client
);
71 static int saa7185_write(struct v4l2_subdev
*sd
, u8 reg
, u8 value
)
73 struct i2c_client
*client
= v4l2_get_subdevdata(sd
);
74 struct saa7185
*encoder
= to_saa7185(sd
);
76 v4l2_dbg(1, debug
, sd
, "%02x set to %02x\n", reg
, value
);
77 encoder
->reg
[reg
] = value
;
78 return i2c_smbus_write_byte_data(client
, reg
, value
);
81 static int saa7185_write_block(struct v4l2_subdev
*sd
,
82 const u8
*data
, unsigned int len
)
84 struct i2c_client
*client
= v4l2_get_subdevdata(sd
);
85 struct saa7185
*encoder
= to_saa7185(sd
);
89 /* the adv7175 has an autoincrement function, use it if
90 * the adapter understands raw I2C */
91 if (i2c_check_functionality(client
->adapter
, I2C_FUNC_I2C
)) {
92 /* do raw I2C, not smbus compatible */
98 block_data
[block_len
++] = reg
= data
[0];
100 block_data
[block_len
++] =
101 encoder
->reg
[reg
++] = data
[1];
104 } while (len
>= 2 && data
[0] == reg
&& block_len
< 32);
105 ret
= i2c_master_send(client
, block_data
, block_len
);
110 /* do some slow I2C emulation kind of thing */
113 ret
= saa7185_write(sd
, reg
, *data
++);
123 /* ----------------------------------------------------------------------- */
125 static const unsigned char init_common
[] = {
126 0x3a, 0x0f, /* CBENB=0, V656=0, VY2C=1,
127 * YUV2C=1, MY2C=1, MUV2C=1 */
129 0x42, 0x6b, /* OVLY0=107 */
130 0x43, 0x00, /* OVLU0=0 white */
131 0x44, 0x00, /* OVLV0=0 */
132 0x45, 0x22, /* OVLY1=34 */
133 0x46, 0xac, /* OVLU1=172 yellow */
134 0x47, 0x0e, /* OVLV1=14 */
135 0x48, 0x03, /* OVLY2=3 */
136 0x49, 0x1d, /* OVLU2=29 cyan */
137 0x4a, 0xac, /* OVLV2=172 */
138 0x4b, 0xf0, /* OVLY3=240 */
139 0x4c, 0xc8, /* OVLU3=200 green */
140 0x4d, 0xb9, /* OVLV3=185 */
141 0x4e, 0xd4, /* OVLY4=212 */
142 0x4f, 0x38, /* OVLU4=56 magenta */
143 0x50, 0x47, /* OVLV4=71 */
144 0x51, 0xc1, /* OVLY5=193 */
145 0x52, 0xe3, /* OVLU5=227 red */
146 0x53, 0x54, /* OVLV5=84 */
147 0x54, 0xa3, /* OVLY6=163 */
148 0x55, 0x54, /* OVLU6=84 blue */
149 0x56, 0xf2, /* OVLV6=242 */
150 0x57, 0x90, /* OVLY7=144 */
151 0x58, 0x00, /* OVLU7=0 black */
152 0x59, 0x00, /* OVLV7=0 */
154 0x5a, 0x00, /* CHPS=0 */
155 0x5b, 0x76, /* GAINU=118 */
156 0x5c, 0xa5, /* GAINV=165 */
157 0x5d, 0x3c, /* BLCKL=60 */
158 0x5e, 0x3a, /* BLNNL=58 */
159 0x5f, 0x3a, /* CCRS=0, BLNVB=58 */
160 0x60, 0x00, /* NULL */
162 /* 0x61 - 0x66 set according to norm */
164 0x67, 0x00, /* 0 : caption 1st byte odd field */
165 0x68, 0x00, /* 0 : caption 2nd byte odd field */
166 0x69, 0x00, /* 0 : caption 1st byte even field */
167 0x6a, 0x00, /* 0 : caption 2nd byte even field */
169 0x6b, 0x91, /* MODIN=2, PCREF=0, SCCLN=17 */
170 0x6c, 0x20, /* SRCV1=0, TRCV2=1, ORCV1=0, PRCV1=0,
171 * CBLF=0, ORCV2=0, PRCV2=0 */
172 0x6d, 0x00, /* SRCM1=0, CCEN=0 */
174 0x6e, 0x0e, /* HTRIG=0x005, approx. centered, at
176 0x6f, 0x00, /* HTRIG upper bits */
177 0x70, 0x20, /* PHRES=0, SBLN=1, VTRIG=0 */
179 /* The following should not be needed */
181 0x71, 0x15, /* BMRQ=0x115 */
182 0x72, 0x90, /* EMRQ=0x690 */
183 0x73, 0x61, /* EMRQ=0x690, BMRQ=0x115 */
184 0x74, 0x00, /* NULL */
185 0x75, 0x00, /* NULL */
186 0x76, 0x00, /* NULL */
187 0x77, 0x15, /* BRCV=0x115 */
188 0x78, 0x90, /* ERCV=0x690 */
189 0x79, 0x61, /* ERCV=0x690, BRCV=0x115 */
191 /* Field length controls */
193 0x7a, 0x70, /* FLC=0 */
195 /* The following should not be needed if SBLN = 1 */
197 0x7b, 0x16, /* FAL=22 */
198 0x7c, 0x35, /* LAL=244 */
199 0x7d, 0x20, /* LAL=244, FAL=22 */
202 static const unsigned char init_pal
[] = {
203 0x61, 0x1e, /* FISE=0, PAL=1, SCBW=1, RTCE=1,
204 * YGS=1, INPI=0, DOWN=0 */
205 0x62, 0xc8, /* DECTYP=1, BSTA=72 */
206 0x63, 0xcb, /* FSC0 */
207 0x64, 0x8a, /* FSC1 */
208 0x65, 0x09, /* FSC2 */
209 0x66, 0x2a, /* FSC3 */
212 static const unsigned char init_ntsc
[] = {
213 0x61, 0x1d, /* FISE=1, PAL=0, SCBW=1, RTCE=1,
214 * YGS=1, INPI=0, DOWN=0 */
215 0x62, 0xe6, /* DECTYP=1, BSTA=102 */
216 0x63, 0x1f, /* FSC0 */
217 0x64, 0x7c, /* FSC1 */
218 0x65, 0xf0, /* FSC2 */
219 0x66, 0x21, /* FSC3 */
223 static int saa7185_init(struct v4l2_subdev
*sd
, u32 val
)
225 struct saa7185
*encoder
= to_saa7185(sd
);
227 saa7185_write_block(sd
, init_common
, sizeof(init_common
));
228 if (encoder
->norm
& V4L2_STD_NTSC
)
229 saa7185_write_block(sd
, init_ntsc
, sizeof(init_ntsc
));
231 saa7185_write_block(sd
, init_pal
, sizeof(init_pal
));
235 static int saa7185_s_std_output(struct v4l2_subdev
*sd
, v4l2_std_id std
)
237 struct saa7185
*encoder
= to_saa7185(sd
);
239 if (std
& V4L2_STD_NTSC
)
240 saa7185_write_block(sd
, init_ntsc
, sizeof(init_ntsc
));
241 else if (std
& V4L2_STD_PAL
)
242 saa7185_write_block(sd
, init_pal
, sizeof(init_pal
));
249 static int saa7185_s_routing(struct v4l2_subdev
*sd
,
250 u32 input
, u32 output
, u32 config
)
252 struct saa7185
*encoder
= to_saa7185(sd
);
254 /* RJ: input = 0: input is from SA7111
255 input = 1: input is from ZR36060 */
259 /* turn off colorbar */
260 saa7185_write(sd
, 0x3a, 0x0f);
261 /* Switch RTCE to 1 */
262 saa7185_write(sd
, 0x61, (encoder
->reg
[0x61] & 0xf7) | 0x08);
263 saa7185_write(sd
, 0x6e, 0x01);
267 /* turn off colorbar */
268 saa7185_write(sd
, 0x3a, 0x0f);
269 /* Switch RTCE to 0 */
270 saa7185_write(sd
, 0x61, (encoder
->reg
[0x61] & 0xf7) | 0x00);
271 /* SW: a slight sync problem... */
272 saa7185_write(sd
, 0x6e, 0x00);
276 /* turn on colorbar */
277 saa7185_write(sd
, 0x3a, 0x8f);
278 /* Switch RTCE to 0 */
279 saa7185_write(sd
, 0x61, (encoder
->reg
[0x61] & 0xf7) | 0x08);
280 /* SW: a slight sync problem... */
281 saa7185_write(sd
, 0x6e, 0x01);
290 static int saa7185_g_chip_ident(struct v4l2_subdev
*sd
, struct v4l2_dbg_chip_ident
*chip
)
292 struct i2c_client
*client
= v4l2_get_subdevdata(sd
);
294 return v4l2_chip_ident_i2c_client(client
, chip
, V4L2_IDENT_SAA7185
, 0);
297 /* ----------------------------------------------------------------------- */
299 static const struct v4l2_subdev_core_ops saa7185_core_ops
= {
300 .g_chip_ident
= saa7185_g_chip_ident
,
301 .init
= saa7185_init
,
304 static const struct v4l2_subdev_video_ops saa7185_video_ops
= {
305 .s_std_output
= saa7185_s_std_output
,
306 .s_routing
= saa7185_s_routing
,
309 static const struct v4l2_subdev_ops saa7185_ops
= {
310 .core
= &saa7185_core_ops
,
311 .video
= &saa7185_video_ops
,
315 /* ----------------------------------------------------------------------- */
317 static int saa7185_probe(struct i2c_client
*client
,
318 const struct i2c_device_id
*id
)
321 struct saa7185
*encoder
;
322 struct v4l2_subdev
*sd
;
324 /* Check if the adapter supports the needed features */
325 if (!i2c_check_functionality(client
->adapter
, I2C_FUNC_SMBUS_BYTE_DATA
))
328 v4l_info(client
, "chip found @ 0x%x (%s)\n",
329 client
->addr
<< 1, client
->adapter
->name
);
331 encoder
= kzalloc(sizeof(struct saa7185
), GFP_KERNEL
);
334 encoder
->norm
= V4L2_STD_NTSC
;
336 v4l2_i2c_subdev_init(sd
, client
, &saa7185_ops
);
338 i
= saa7185_write_block(sd
, init_common
, sizeof(init_common
));
340 i
= saa7185_write_block(sd
, init_ntsc
, sizeof(init_ntsc
));
342 v4l2_dbg(1, debug
, sd
, "init error %d\n", i
);
344 v4l2_dbg(1, debug
, sd
, "revision 0x%x\n",
345 saa7185_read(sd
) >> 5);
349 static int saa7185_remove(struct i2c_client
*client
)
351 struct v4l2_subdev
*sd
= i2c_get_clientdata(client
);
352 struct saa7185
*encoder
= to_saa7185(sd
);
354 v4l2_device_unregister_subdev(sd
);
355 /* SW: output off is active */
356 saa7185_write(sd
, 0x61, (encoder
->reg
[0x61]) | 0x40);
361 /* ----------------------------------------------------------------------- */
363 static const struct i2c_device_id saa7185_id
[] = {
367 MODULE_DEVICE_TABLE(i2c
, saa7185_id
);
369 static struct v4l2_i2c_driver_data v4l2_i2c_data
= {
371 .probe
= saa7185_probe
,
372 .remove
= saa7185_remove
,
373 .id_table
= saa7185_id
,