Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney...
[linux-2.6] / drivers / media / video / dpc7146.c
1 /*
2     dpc7146.c - v4l2 driver for the dpc7146 demonstration board
3
4     Copyright (C) 2000-2003 Michael Hunold <michael@mihu.de>
5
6     This program is free software; you can redistribute it and/or modify
7     it under the terms of the GNU General Public License as published by
8     the Free Software Foundation; either version 2 of the License, or
9     (at your option) any later version.
10
11     This program is distributed in the hope that it will be useful,
12     but WITHOUT ANY WARRANTY; without even the implied warranty of
13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14     GNU General Public License for more details.
15
16     You should have received a copy of the GNU General Public License
17     along with this program; if not, write to the Free Software
18     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 */
20
21 #define DEBUG_VARIABLE debug
22
23 #include <media/saa7146_vv.h>
24 #include <linux/video_decoder.h>        /* for saa7111a */
25
26 #define I2C_SAA7111A            0x24
27
28 /* All unused bytes are reserverd. */
29 #define SAA711X_CHIP_VERSION            0x00
30 #define SAA711X_ANALOG_INPUT_CONTROL_1  0x02
31 #define SAA711X_ANALOG_INPUT_CONTROL_2  0x03
32 #define SAA711X_ANALOG_INPUT_CONTROL_3  0x04
33 #define SAA711X_ANALOG_INPUT_CONTROL_4  0x05
34 #define SAA711X_HORIZONTAL_SYNC_START   0x06
35 #define SAA711X_HORIZONTAL_SYNC_STOP    0x07
36 #define SAA711X_SYNC_CONTROL            0x08
37 #define SAA711X_LUMINANCE_CONTROL       0x09
38 #define SAA711X_LUMINANCE_BRIGHTNESS    0x0A
39 #define SAA711X_LUMINANCE_CONTRAST      0x0B
40 #define SAA711X_CHROMA_SATURATION       0x0C
41 #define SAA711X_CHROMA_HUE_CONTROL      0x0D
42 #define SAA711X_CHROMA_CONTROL          0x0E
43 #define SAA711X_FORMAT_DELAY_CONTROL    0x10
44 #define SAA711X_OUTPUT_CONTROL_1        0x11
45 #define SAA711X_OUTPUT_CONTROL_2        0x12
46 #define SAA711X_OUTPUT_CONTROL_3        0x13
47 #define SAA711X_V_GATE_1_START          0x15
48 #define SAA711X_V_GATE_1_STOP           0x16
49 #define SAA711X_V_GATE_1_MSB            0x17
50 #define SAA711X_TEXT_SLICER_STATUS      0x1A
51 #define SAA711X_DECODED_BYTES_OF_TS_1   0x1B
52 #define SAA711X_DECODED_BYTES_OF_TS_2   0x1C
53 #define SAA711X_STATUS_BYTE             0x1F
54
55 #define DPC_BOARD_CAN_DO_VBI(dev)   (dev->revision != 0)
56
57 static int debug = 0;
58 module_param(debug, int, 0);
59 MODULE_PARM_DESC(debug, "debug verbosity");
60
61 static int dpc_num = 0;
62
63 #define DPC_INPUTS      2
64 static struct v4l2_input dpc_inputs[DPC_INPUTS] = {
65         { 0, "Port A",  V4L2_INPUT_TYPE_CAMERA, 2, 0, V4L2_STD_PAL_BG|V4L2_STD_NTSC_M, 0 },
66         { 1, "Port B",  V4L2_INPUT_TYPE_CAMERA, 2, 0, V4L2_STD_PAL_BG|V4L2_STD_NTSC_M, 0 },
67 };
68
69 #define DPC_AUDIOS      0
70
71 static struct saa7146_extension_ioctls ioctls[] = {
72         { VIDIOC_G_INPUT,       SAA7146_EXCLUSIVE },
73         { VIDIOC_S_INPUT,       SAA7146_EXCLUSIVE },
74         { VIDIOC_ENUMINPUT,     SAA7146_EXCLUSIVE },
75         { VIDIOC_S_STD,         SAA7146_AFTER },
76         { 0,                    0 }
77 };
78
79 struct dpc
80 {
81         struct video_device     *video_dev;
82         struct video_device     *vbi_dev;
83
84         struct i2c_adapter      i2c_adapter;
85         struct i2c_client       *saa7111a;
86
87         int cur_input;  /* current input */
88 };
89
90 /* fixme: add vbi stuff here */
91 static int dpc_probe(struct saa7146_dev* dev)
92 {
93         struct dpc* dpc = NULL;
94         struct i2c_client *client;
95
96         dpc = kzalloc(sizeof(struct dpc), GFP_KERNEL);
97         if( NULL == dpc ) {
98                 printk("dpc_v4l2.o: dpc_probe: not enough kernel memory.\n");
99                 return -ENOMEM;
100         }
101
102         /* FIXME: enable i2c-port pins, video-port-pins
103            video port pins should be enabled here ?! */
104         saa7146_write(dev, MC1, (MASK_08 | MASK_24 | MASK_10 | MASK_26));
105
106         dpc->i2c_adapter = (struct i2c_adapter) {
107                 .class = I2C_CLASS_TV_ANALOG,
108                 .name = "dpc7146",
109         };
110         saa7146_i2c_adapter_prepare(dev, &dpc->i2c_adapter, SAA7146_I2C_BUS_BIT_RATE_480);
111         if(i2c_add_adapter(&dpc->i2c_adapter) < 0) {
112                 DEB_S(("cannot register i2c-device. skipping.\n"));
113                 kfree(dpc);
114                 return -EFAULT;
115         }
116
117         /* loop through all i2c-devices on the bus and look who is there */
118         list_for_each_entry(client, &dpc->i2c_adapter.clients, list)
119                 if( I2C_SAA7111A == client->addr )
120                         dpc->saa7111a = client;
121
122         /* check if all devices are present */
123         if( 0 == dpc->saa7111a ) {
124                 DEB_D(("dpc_v4l2.o: dpc_attach failed for this device.\n"));
125                 i2c_del_adapter(&dpc->i2c_adapter);
126                 kfree(dpc);
127                 return -ENODEV;
128         }
129
130         /* all devices are present, probe was successful */
131         DEB_D(("dpc_v4l2.o: dpc_probe succeeded for this device.\n"));
132
133         /* we store the pointer in our private data field */
134         dev->ext_priv = dpc;
135
136         return 0;
137 }
138
139 /* bring hardware to a sane state. this has to be done, just in case someone
140    wants to capture from this device before it has been properly initialized.
141    the capture engine would badly fail, because no valid signal arrives on the
142    saa7146, thus leading to timeouts and stuff. */
143 static int dpc_init_done(struct saa7146_dev* dev)
144 {
145         struct dpc* dpc = (struct dpc*)dev->ext_priv;
146
147         DEB_D(("dpc_v4l2.o: dpc_init_done called.\n"));
148
149         /* initialize the helper ics to useful values */
150         i2c_smbus_write_byte_data(dpc->saa7111a, 0x00, 0x11);
151
152         i2c_smbus_write_byte_data(dpc->saa7111a, 0x02, 0xc0);
153         i2c_smbus_write_byte_data(dpc->saa7111a, 0x03, 0x30);
154         i2c_smbus_write_byte_data(dpc->saa7111a, 0x04, 0x00);
155         i2c_smbus_write_byte_data(dpc->saa7111a, 0x05, 0x00);
156         i2c_smbus_write_byte_data(dpc->saa7111a, 0x06, 0xde);
157         i2c_smbus_write_byte_data(dpc->saa7111a, 0x07, 0xad);
158         i2c_smbus_write_byte_data(dpc->saa7111a, 0x08, 0xa8);
159         i2c_smbus_write_byte_data(dpc->saa7111a, 0x09, 0x00);
160         i2c_smbus_write_byte_data(dpc->saa7111a, 0x0a, 0x80);
161         i2c_smbus_write_byte_data(dpc->saa7111a, 0x0b, 0x47);
162         i2c_smbus_write_byte_data(dpc->saa7111a, 0x0c, 0x40);
163         i2c_smbus_write_byte_data(dpc->saa7111a, 0x0d, 0x00);
164         i2c_smbus_write_byte_data(dpc->saa7111a, 0x0e, 0x03);
165
166         i2c_smbus_write_byte_data(dpc->saa7111a, 0x10, 0xd0);
167         i2c_smbus_write_byte_data(dpc->saa7111a, 0x11, 0x1c);
168         i2c_smbus_write_byte_data(dpc->saa7111a, 0x12, 0xc1);
169         i2c_smbus_write_byte_data(dpc->saa7111a, 0x13, 0x30);
170
171         i2c_smbus_write_byte_data(dpc->saa7111a, 0x1f, 0x81);
172
173         return 0;
174 }
175
176 static struct saa7146_ext_vv vv_data;
177
178 /* this function only gets called when the probing was successful */
179 static int dpc_attach(struct saa7146_dev* dev, struct saa7146_pci_extension_data *info)
180 {
181         struct dpc* dpc = (struct dpc*)dev->ext_priv;
182
183         DEB_D(("dpc_v4l2.o: dpc_attach called.\n"));
184
185         /* checking for i2c-devices can be omitted here, because we
186            already did this in "dpc_vl42_probe" */
187
188         saa7146_vv_init(dev,&vv_data);
189         if( 0 != saa7146_register_device(&dpc->video_dev, dev, "dpc", VFL_TYPE_GRABBER)) {
190                 ERR(("cannot register capture v4l2 device. skipping.\n"));
191                 return -1;
192         }
193
194         /* initialization stuff (vbi) (only for revision > 0 and for extensions which want it)*/
195         if( 0 != DPC_BOARD_CAN_DO_VBI(dev)) {
196                 if( 0 != saa7146_register_device(&dpc->vbi_dev, dev, "dpc", VFL_TYPE_VBI)) {
197                         ERR(("cannot register vbi v4l2 device. skipping.\n"));
198                 }
199         }
200
201         i2c_use_client(dpc->saa7111a);
202
203         printk("dpc: found 'dpc7146 demonstration board'-%d.\n",dpc_num);
204         dpc_num++;
205
206         /* the rest */
207         dpc->cur_input = 0;
208         dpc_init_done(dev);
209
210         return 0;
211 }
212
213 static int dpc_detach(struct saa7146_dev* dev)
214 {
215         struct dpc* dpc = (struct dpc*)dev->ext_priv;
216
217         DEB_EE(("dev:%p\n",dev));
218
219         i2c_release_client(dpc->saa7111a);
220
221         saa7146_unregister_device(&dpc->video_dev,dev);
222         if( 0 != DPC_BOARD_CAN_DO_VBI(dev)) {
223                 saa7146_unregister_device(&dpc->vbi_dev,dev);
224         }
225         saa7146_vv_release(dev);
226
227         dpc_num--;
228
229         i2c_del_adapter(&dpc->i2c_adapter);
230         kfree(dpc);
231         return 0;
232 }
233
234 #ifdef axa
235 int dpc_vbi_bypass(struct saa7146_dev* dev)
236 {
237         struct dpc* dpc = (struct dpc*)dev->ext_priv;
238
239         int i = 1;
240
241         /* switch bypass in saa7111a */
242         if ( 0 != dpc->saa7111a->driver->command(dpc->saa7111a,SAA711X_VBI_BYPASS, &i)) {
243                 printk("dpc_v4l2.o: VBI_BYPASS: could not address saa7111a.\n");
244                 return -1;
245         }
246
247         return 0;
248 }
249 #endif
250
251 static int dpc_ioctl(struct saa7146_fh *fh, unsigned int cmd, void *arg)
252 {
253         struct saa7146_dev *dev = fh->dev;
254         struct dpc* dpc = (struct dpc*)dev->ext_priv;
255 /*
256         struct saa7146_vv *vv = dev->vv_data;
257 */
258         switch(cmd)
259         {
260         case VIDIOC_ENUMINPUT:
261         {
262                 struct v4l2_input *i = arg;
263                 DEB_EE(("VIDIOC_ENUMINPUT %d.\n",i->index));
264
265                 if( i->index < 0 || i->index >= DPC_INPUTS) {
266                         return -EINVAL;
267                 }
268
269                 memcpy(i, &dpc_inputs[i->index], sizeof(struct v4l2_input));
270
271                 DEB_D(("dpc_v4l2.o: v4l2_ioctl: VIDIOC_ENUMINPUT %d.\n",i->index));
272                 return 0;
273         }
274         case VIDIOC_G_INPUT:
275         {
276                 int *input = (int *)arg;
277                 *input = dpc->cur_input;
278
279                 DEB_D(("dpc_v4l2.o: VIDIOC_G_INPUT: %d\n",*input));
280                 return 0;
281         }
282         case VIDIOC_S_INPUT:
283         {
284                 int     input = *(int *)arg;
285
286                 if (input < 0 || input >= DPC_INPUTS) {
287                         return -EINVAL;
288                 }
289
290                 dpc->cur_input = input;
291
292                 /* fixme: switch input here, switch audio, too! */
293 //              saa7146_set_hps_source_and_sync(dev, input_port_selection[input].hps_source, input_port_selection[input].hps_sync);
294                 printk("dpc_v4l2.o: VIDIOC_S_INPUT: fixme switch input.\n");
295
296                 return 0;
297         }
298         default:
299 /*
300                 DEB_D(("dpc_v4l2.o: v4l2_ioctl does not handle this ioctl.\n"));
301 */
302                 return -ENOIOCTLCMD;
303         }
304         return 0;
305 }
306
307 static int std_callback(struct saa7146_dev* dev, struct saa7146_standard *std)
308 {
309         return 0;
310 }
311
312 static struct saa7146_standard standard[] = {
313         {
314                 .name   = "PAL",        .id     = V4L2_STD_PAL,
315                 .v_offset       = 0x17, .v_field        = 288,
316                 .h_offset       = 0x14, .h_pixels       = 680,
317                 .v_max_out      = 576,  .h_max_out      = 768,
318         }, {
319                 .name   = "NTSC",       .id     = V4L2_STD_NTSC,
320                 .v_offset       = 0x16, .v_field        = 240,
321                 .h_offset       = 0x06, .h_pixels       = 708,
322                 .v_max_out      = 480,  .h_max_out      = 640,
323         }, {
324                 .name   = "SECAM",      .id     = V4L2_STD_SECAM,
325                 .v_offset       = 0x14, .v_field        = 288,
326                 .h_offset       = 0x14, .h_pixels       = 720,
327                 .v_max_out      = 576,  .h_max_out      = 768,
328         }
329 };
330
331 static struct saa7146_extension extension;
332
333 static struct saa7146_pci_extension_data dpc = {
334         .ext_priv = "Multimedia eXtension Board",
335         .ext = &extension,
336 };
337
338 static struct pci_device_id pci_tbl[] = {
339         {
340                 .vendor    = PCI_VENDOR_ID_PHILIPS,
341                 .device    = PCI_DEVICE_ID_PHILIPS_SAA7146,
342                 .subvendor = 0x0000,
343                 .subdevice = 0x0000,
344                 .driver_data = (unsigned long)&dpc,
345         }, {
346                 .vendor = 0,
347         }
348 };
349
350 MODULE_DEVICE_TABLE(pci, pci_tbl);
351
352 static struct saa7146_ext_vv vv_data = {
353         .inputs         = DPC_INPUTS,
354         .capabilities   = V4L2_CAP_VBI_CAPTURE,
355         .stds           = &standard[0],
356         .num_stds       = sizeof(standard)/sizeof(struct saa7146_standard),
357         .std_callback   = &std_callback,
358         .ioctls         = &ioctls[0],
359         .ioctl          = dpc_ioctl,
360 };
361
362 static struct saa7146_extension extension = {
363         .name           = "dpc7146 demonstration board",
364         .flags          = SAA7146_USE_I2C_IRQ,
365
366         .pci_tbl        = &pci_tbl[0],
367         .module         = THIS_MODULE,
368
369         .probe          = dpc_probe,
370         .attach         = dpc_attach,
371         .detach         = dpc_detach,
372
373         .irq_mask       = 0,
374         .irq_func       = NULL,
375 };
376
377 static int __init dpc_init_module(void)
378 {
379         if( 0 != saa7146_register_extension(&extension)) {
380                 DEB_S(("failed to register extension.\n"));
381                 return -ENODEV;
382         }
383
384         return 0;
385 }
386
387 static void __exit dpc_cleanup_module(void)
388 {
389         saa7146_unregister_extension(&extension);
390 }
391
392 module_init(dpc_init_module);
393 module_exit(dpc_cleanup_module);
394
395 MODULE_DESCRIPTION("video4linux-2 driver for the 'dpc7146 demonstration board'");
396 MODULE_AUTHOR("Michael Hunold <michael@mihu.de>");
397 MODULE_LICENSE("GPL");