tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
57static int debug = 0;
58module_param(debug, int, 0);
59MODULE_PARM_DESC(debug, "debug verbosity");
60
61static int dpc_num = 0;
62
63#define DPC_INPUTS 2
64static 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
71static 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
79struct 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 */
91static int dpc_probe(struct saa7146_dev* dev)
92{
93 struct dpc* dpc = NULL;
94 struct i2c_client *client;
95 struct list_head *item;
96
97 dpc = kzalloc(sizeof(struct dpc), GFP_KERNEL);
98 if( NULL == dpc ) {
99 printk("dpc_v4l2.o: dpc_probe: not enough kernel memory.\n");
100 return -ENOMEM;
101 }
102
103 /* FIXME: enable i2c-port pins, video-port-pins
104 video port pins should be enabled here ?! */
105 saa7146_write(dev, MC1, (MASK_08 | MASK_24 | MASK_10 | MASK_26));
106
107 dpc->i2c_adapter = (struct i2c_adapter) {
108 .class = I2C_CLASS_TV_ANALOG,
109 .name = "dpc7146",
110 };
111 saa7146_i2c_adapter_prepare(dev, &dpc->i2c_adapter, SAA7146_I2C_BUS_BIT_RATE_480);
112 if(i2c_add_adapter(&dpc->i2c_adapter) < 0) {
113 DEB_S(("cannot register i2c-device. skipping.\n"));
114 kfree(dpc);
115 return -EFAULT;
116 }
117
118 /* loop through all i2c-devices on the bus and look who is there */
119 list_for_each(item,&dpc->i2c_adapter.clients) {
120 client = list_entry(item, struct i2c_client, list);
121 if( I2C_SAA7111A == client->addr )
122 dpc->saa7111a = client;
123 }
124
125 /* check if all devices are present */
126 if( 0 == dpc->saa7111a ) {
127 DEB_D(("dpc_v4l2.o: dpc_attach failed for this device.\n"));
128 i2c_del_adapter(&dpc->i2c_adapter);
129 kfree(dpc);
130 return -ENODEV;
131 }
132
133 /* all devices are present, probe was successful */
134 DEB_D(("dpc_v4l2.o: dpc_probe succeeded for this device.\n"));
135
136 /* we store the pointer in our private data field */
137 dev->ext_priv = dpc;
138
139 return 0;
140}
141
142/* bring hardware to a sane state. this has to be done, just in case someone
143 wants to capture from this device before it has been properly initialized.
144 the capture engine would badly fail, because no valid signal arrives on the
145 saa7146, thus leading to timeouts and stuff. */
146static int dpc_init_done(struct saa7146_dev* dev)
147{
148 struct dpc* dpc = (struct dpc*)dev->ext_priv;
149
150 DEB_D(("dpc_v4l2.o: dpc_init_done called.\n"));
151
152 /* initialize the helper ics to useful values */
153 i2c_smbus_write_byte_data(dpc->saa7111a, 0x00, 0x11);
154
155 i2c_smbus_write_byte_data(dpc->saa7111a, 0x02, 0xc0);
156 i2c_smbus_write_byte_data(dpc->saa7111a, 0x03, 0x30);
157 i2c_smbus_write_byte_data(dpc->saa7111a, 0x04, 0x00);
158 i2c_smbus_write_byte_data(dpc->saa7111a, 0x05, 0x00);
159 i2c_smbus_write_byte_data(dpc->saa7111a, 0x06, 0xde);
160 i2c_smbus_write_byte_data(dpc->saa7111a, 0x07, 0xad);
161 i2c_smbus_write_byte_data(dpc->saa7111a, 0x08, 0xa8);
162 i2c_smbus_write_byte_data(dpc->saa7111a, 0x09, 0x00);
163 i2c_smbus_write_byte_data(dpc->saa7111a, 0x0a, 0x80);
164 i2c_smbus_write_byte_data(dpc->saa7111a, 0x0b, 0x47);
165 i2c_smbus_write_byte_data(dpc->saa7111a, 0x0c, 0x40);
166 i2c_smbus_write_byte_data(dpc->saa7111a, 0x0d, 0x00);
167 i2c_smbus_write_byte_data(dpc->saa7111a, 0x0e, 0x03);
168
169 i2c_smbus_write_byte_data(dpc->saa7111a, 0x10, 0xd0);
170 i2c_smbus_write_byte_data(dpc->saa7111a, 0x11, 0x1c);
171 i2c_smbus_write_byte_data(dpc->saa7111a, 0x12, 0xc1);
172 i2c_smbus_write_byte_data(dpc->saa7111a, 0x13, 0x30);
173
174 i2c_smbus_write_byte_data(dpc->saa7111a, 0x1f, 0x81);
175
176 return 0;
177}
178
179static struct saa7146_ext_vv vv_data;
180
181/* this function only gets called when the probing was successful */
182static int dpc_attach(struct saa7146_dev* dev, struct saa7146_pci_extension_data *info)
183{
184 struct dpc* dpc = (struct dpc*)dev->ext_priv;
185
186 DEB_D(("dpc_v4l2.o: dpc_attach called.\n"));
187
188 /* checking for i2c-devices can be omitted here, because we
189 already did this in "dpc_vl42_probe" */
190
191 saa7146_vv_init(dev,&vv_data);
192 if( 0 != saa7146_register_device(&dpc->video_dev, dev, "dpc", VFL_TYPE_GRABBER)) {
193 ERR(("cannot register capture v4l2 device. skipping.\n"));
194 return -1;
195 }
196
197 /* initialization stuff (vbi) (only for revision > 0 and for extensions which want it)*/
198 if( 0 != DPC_BOARD_CAN_DO_VBI(dev)) {
199 if( 0 != saa7146_register_device(&dpc->vbi_dev, dev, "dpc", VFL_TYPE_VBI)) {
200 ERR(("cannot register vbi v4l2 device. skipping.\n"));
201 }
202 }
203
204 i2c_use_client(dpc->saa7111a);
205
206 printk("dpc: found 'dpc7146 demonstration board'-%d.\n",dpc_num);
207 dpc_num++;
208
209 /* the rest */
210 dpc->cur_input = 0;
211 dpc_init_done(dev);
212
213 return 0;
214}
215
216static int dpc_detach(struct saa7146_dev* dev)
217{
218 struct dpc* dpc = (struct dpc*)dev->ext_priv;
219
220 DEB_EE(("dev:%p\n",dev));
221
222 i2c_release_client(dpc->saa7111a);
223
224 saa7146_unregister_device(&dpc->video_dev,dev);
225 if( 0 != DPC_BOARD_CAN_DO_VBI(dev)) {
226 saa7146_unregister_device(&dpc->vbi_dev,dev);
227 }
228 saa7146_vv_release(dev);
229
230 dpc_num--;
231
232 i2c_del_adapter(&dpc->i2c_adapter);
233 kfree(dpc);
234 return 0;
235}
236
237#ifdef axa
238int dpc_vbi_bypass(struct saa7146_dev* dev)
239{
240 struct dpc* dpc = (struct dpc*)dev->ext_priv;
241
242 int i = 1;
243
244 /* switch bypass in saa7111a */
245 if ( 0 != dpc->saa7111a->driver->command(dpc->saa7111a,SAA711X_VBI_BYPASS, &i)) {
246 printk("dpc_v4l2.o: VBI_BYPASS: could not address saa7111a.\n");
247 return -1;
248 }
249
250 return 0;
251}
252#endif
253
254static int dpc_ioctl(struct saa7146_fh *fh, unsigned int cmd, void *arg)
255{
256 struct saa7146_dev *dev = fh->dev;
257 struct dpc* dpc = (struct dpc*)dev->ext_priv;
258/*
259 struct saa7146_vv *vv = dev->vv_data;
260*/
261 switch(cmd)
262 {
263 case VIDIOC_ENUMINPUT:
264 {
265 struct v4l2_input *i = arg;
266 DEB_EE(("VIDIOC_ENUMINPUT %d.\n",i->index));
267
268 if( i->index < 0 || i->index >= DPC_INPUTS) {
269 return -EINVAL;
270 }
271
272 memcpy(i, &dpc_inputs[i->index], sizeof(struct v4l2_input));
273
274 DEB_D(("dpc_v4l2.o: v4l2_ioctl: VIDIOC_ENUMINPUT %d.\n",i->index));
275 return 0;
276 }
277 case VIDIOC_G_INPUT:
278 {
279 int *input = (int *)arg;
280 *input = dpc->cur_input;
281
282 DEB_D(("dpc_v4l2.o: VIDIOC_G_INPUT: %d\n",*input));
283 return 0;
284 }
285 case VIDIOC_S_INPUT:
286 {
287 int input = *(int *)arg;
288
289 if (input < 0 || input >= DPC_INPUTS) {
290 return -EINVAL;
291 }
292
293 dpc->cur_input = input;
294
295 /* fixme: switch input here, switch audio, too! */
296// saa7146_set_hps_source_and_sync(dev, input_port_selection[input].hps_source, input_port_selection[input].hps_sync);
297 printk("dpc_v4l2.o: VIDIOC_S_INPUT: fixme switch input.\n");
298
299 return 0;
300 }
301 default:
302/*
303 DEB_D(("dpc_v4l2.o: v4l2_ioctl does not handle this ioctl.\n"));
304*/
305 return -ENOIOCTLCMD;
306 }
307 return 0;
308}
309
310static int std_callback(struct saa7146_dev* dev, struct saa7146_standard *std)
311{
312 return 0;
313}
314
315static struct saa7146_standard standard[] = {
316 {
317 .name = "PAL", .id = V4L2_STD_PAL,
318 .v_offset = 0x17, .v_field = 288,
319 .h_offset = 0x14, .h_pixels = 680,
320 .v_max_out = 576, .h_max_out = 768,
321 }, {
322 .name = "NTSC", .id = V4L2_STD_NTSC,
323 .v_offset = 0x16, .v_field = 240,
324 .h_offset = 0x06, .h_pixels = 708,
325 .v_max_out = 480, .h_max_out = 640,
326 }, {
327 .name = "SECAM", .id = V4L2_STD_SECAM,
328 .v_offset = 0x14, .v_field = 288,
329 .h_offset = 0x14, .h_pixels = 720,
330 .v_max_out = 576, .h_max_out = 768,
331 }
332};
333
334static struct saa7146_extension extension;
335
336static struct saa7146_pci_extension_data dpc = {
337 .ext_priv = "Multimedia eXtension Board",
338 .ext = &extension,
339};
340
341static struct pci_device_id pci_tbl[] = {
342 {
343 .vendor = PCI_VENDOR_ID_PHILIPS,
344 .device = PCI_DEVICE_ID_PHILIPS_SAA7146,
345 .subvendor = 0x0000,
346 .subdevice = 0x0000,
347 .driver_data = (unsigned long)&dpc,
348 }, {
349 .vendor = 0,
350 }
351};
352
353MODULE_DEVICE_TABLE(pci, pci_tbl);
354
355static struct saa7146_ext_vv vv_data = {
356 .inputs = DPC_INPUTS,
357 .capabilities = V4L2_CAP_VBI_CAPTURE,
358 .stds = &standard[0],
359 .num_stds = sizeof(standard)/sizeof(struct saa7146_standard),
360 .std_callback = &std_callback,
361 .ioctls = &ioctls[0],
362 .ioctl = dpc_ioctl,
363};
364
365static struct saa7146_extension extension = {
366 .name = "dpc7146 demonstration board",
367 .flags = SAA7146_USE_I2C_IRQ,
368
369 .pci_tbl = &pci_tbl[0],
370 .module = THIS_MODULE,
371
372 .probe = dpc_probe,
373 .attach = dpc_attach,
374 .detach = dpc_detach,
375
376 .irq_mask = 0,
377 .irq_func = NULL,
378};
379
380static int __init dpc_init_module(void)
381{
382 if( 0 != saa7146_register_extension(&extension)) {
383 DEB_S(("failed to register extension.\n"));
384 return -ENODEV;
385 }
386
387 return 0;
388}
389
390static void __exit dpc_cleanup_module(void)
391{
392 saa7146_unregister_extension(&extension);
393}
394
395module_init(dpc_init_module);
396module_exit(dpc_cleanup_module);
397
398MODULE_DESCRIPTION("video4linux-2 driver for the 'dpc7146 demonstration board'");
399MODULE_AUTHOR("Michael Hunold <michael@mihu.de>");
400MODULE_LICENSE("GPL");