URL https://opencores.org/ocsvn/or1k/or1k/trunk

Subversion Repositories or1k

[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [drivers/] [media/] [video/] [bt856.c] - Blame information for rev 1275

Go to most recent revision | Details | Compare with Previous | View Log


/*
    bt856 - BT856A Digital Video Encoder (Rockwell Part)
 
    Copyright (C) 1999 Mike Bernson <mike@mlb.org>
    Copyright (C) 1998 Dave Perks <dperks@ibm.net>
 
    Modifications for LML33/DC10plus unified driver
    Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>
 
    This code was modify/ported from the saa7111 driver written
    by Dave Perks.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
 
#include <linux/module.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/kernel.h>
#include <linux/major.h>
#include <linux/slab.h>
#include <linux/mm.h>
#include <linux/pci.h>
#include <linux/signal.h>
#include <asm/io.h>
#include <asm/pgtable.h>
#include <asm/page.h>
#include <linux/sched.h>
#include <asm/segment.h>
#include <linux/types.h>
#include <linux/wrapper.h>
 
#include <linux/videodev.h>
#include <linux/version.h>
#include <asm/uaccess.h>
 
#include <linux/i2c-old.h>
#include <linux/video_encoder.h>
 
#define DEBUG(x)   x            /* Debug driver */
 
/* ----------------------------------------------------------------------- */
 
struct bt856 {
        struct i2c_bus *bus;
        int addr;
        unsigned char reg[128];
 
        int norm;
        int enable;
        int bright;
        int contrast;
        int hue;
        int sat;
};
 
#define   I2C_BT856        0x88
 
#define I2C_DELAY   10
 
/* ----------------------------------------------------------------------- */
 
static int bt856_write(struct bt856 *dev, unsigned char subaddr,
                       unsigned char data)
{
        int ack;
 
        LOCK_I2C_BUS(dev->bus);
 
        i2c_start(dev->bus);
        i2c_sendbyte(dev->bus, dev->addr, I2C_DELAY);
        i2c_sendbyte(dev->bus, subaddr, I2C_DELAY);
        ack = i2c_sendbyte(dev->bus, data, I2C_DELAY);
        dev->reg[subaddr] = data;
        i2c_stop(dev->bus);
        UNLOCK_I2C_BUS(dev->bus);
        return ack;
}
 
static int bt856_setbit(struct bt856 *dev, int subaddr, int bit, int data)
{
        return bt856_write(dev, subaddr,(dev->reg[subaddr] & ~(1 << bit)) | (data ? (1 << bit) : 0));
}
 
/* ----------------------------------------------------------------------- */
 
static int bt856_attach(struct i2c_device *device)
{
        struct bt856 *encoder;
 
        /* This chip is not on the buz card but at the same address saa7185 */
        //if (memcmp(device->bus->name, "buz", 3) == 0 || memcmp(device->bus->name, "zr36057", 6) == 0)
        //   return 1;
 
        MOD_INC_USE_COUNT;
        device->data = encoder = kmalloc(sizeof(struct bt856), GFP_KERNEL);
 
        if (encoder == NULL) {
                MOD_DEC_USE_COUNT;
                return -ENOMEM;
        }
 
 
        memset(encoder, 0, sizeof(struct bt856));
        strcpy(device->name, "bt856");
        encoder->bus = device->bus;
        encoder->addr = device->addr;
        encoder->norm = VIDEO_MODE_NTSC;
        encoder->enable = 1;
 
        DEBUG(printk(KERN_INFO "%s-bt856: attach\n", encoder->bus->name));
 
        bt856_write(encoder, 0xdc, 0x18);
        bt856_write(encoder, 0xda, 0);
        bt856_write(encoder, 0xde, 0);
 
        bt856_setbit(encoder, 0xdc, 3, 1);
        //bt856_setbit(encoder, 0xdc, 6, 0);
        bt856_setbit(encoder, 0xdc, 4, 1);
 
        switch (encoder->norm) {
 
        case VIDEO_MODE_NTSC:
                bt856_setbit(encoder, 0xdc, 2, 0);
                break;
 
        case VIDEO_MODE_PAL:
                bt856_setbit(encoder, 0xdc, 2, 1);
                break;
        }
 
        bt856_setbit(encoder, 0xdc, 1, 1);
        bt856_setbit(encoder, 0xde, 4, 0);
        bt856_setbit(encoder, 0xde, 3, 1);
        return 0;
}
 
 
static int bt856_detach(struct i2c_device *device)
{
        kfree(device->data);
        MOD_DEC_USE_COUNT;
        return 0;
}
 
static int bt856_command(struct i2c_device *device, unsigned int cmd,
                         void *arg)
{
        struct bt856 *encoder = device->data;
 
        switch (cmd) {
 
        case ENCODER_GET_CAPABILITIES:
                {
                        struct video_encoder_capability *cap = arg;
 
                        DEBUG(printk
                              (KERN_INFO "%s-bt856: get capabilities\n",
                               encoder->bus->name));
 
                        cap->flags
                            = VIDEO_ENCODER_PAL
                            | VIDEO_ENCODER_NTSC | VIDEO_ENCODER_CCIR;
                        cap->inputs = 2;
                        cap->outputs = 1;
                }
                break;
 
        case ENCODER_SET_NORM:
                {
                        int *iarg = arg;
 
                        DEBUG(printk(KERN_INFO "%s-bt856: set norm %d\n",
                                     encoder->bus->name, *iarg));
 
                        switch (*iarg) {
 
                        case VIDEO_MODE_NTSC:
                                bt856_setbit(encoder, 0xdc, 2, 0);
                                break;
 
                        case VIDEO_MODE_PAL:
                                bt856_setbit(encoder, 0xdc, 2, 1);
                                bt856_setbit(encoder, 0xda, 0, 0);
                                //bt856_setbit(encoder, 0xda, 0, 1);
                                break;
 
                        default:
                                return -EINVAL;
 
                        }
                        encoder->norm = *iarg;
                }
                break;
 
        case ENCODER_SET_INPUT:
                {
                        int *iarg = arg;
 
                        DEBUG(printk(KERN_INFO "%s-bt856: set input %d\n",
                                     encoder->bus->name, *iarg));
 
                        /*     We only have video bus.
                           *iarg = 0: input is from bt819
                           *iarg = 1: input is from ZR36060 */
 
                        switch (*iarg) {
 
                        case 0:
                                bt856_setbit(encoder, 0xde, 4, 0);
                                bt856_setbit(encoder, 0xde, 3, 1);
                                bt856_setbit(encoder, 0xdc, 3, 1);
                                bt856_setbit(encoder, 0xdc, 6, 0);
                                break;
                        case 1:
                                bt856_setbit(encoder, 0xde, 4, 0);
                                bt856_setbit(encoder, 0xde, 3, 1);
                                bt856_setbit(encoder, 0xdc, 3, 1);
                                bt856_setbit(encoder, 0xdc, 6, 1);
                                break;
                        case 2: // Color bar
                                bt856_setbit(encoder, 0xdc, 3, 0);
                                bt856_setbit(encoder, 0xde, 4, 1);
                                break;
                        default:
                                return -EINVAL;
 
                        }
                }
                break;
 
        case ENCODER_SET_OUTPUT:
                {
                        int *iarg = arg;
 
                        DEBUG(printk(KERN_INFO "%s-bt856: set output %d\n",
                                     encoder->bus->name, *iarg));
 
                        /* not much choice of outputs */
                        if (*iarg != 0) {
                                return -EINVAL;
                        }
                }
                break;
 
        case ENCODER_ENABLE_OUTPUT:
                {
                        int *iarg = arg;
 
                        encoder->enable = !!*iarg;
 
                        DEBUG(printk
                              (KERN_INFO "%s-bt856: enable output %d\n",
                               encoder->bus->name, encoder->enable));
                }
                break;
 
        default:
                return -EINVAL;
        }
 
        return 0;
}
 
/* ----------------------------------------------------------------------- */
 
static struct i2c_driver i2c_driver_bt856 = {
        "bt856",                /* name */
        I2C_DRIVERID_VIDEOENCODER,      /* ID */
        I2C_BT856, I2C_BT856 + 1,
        bt856_attach,
        bt856_detach,
        bt856_command
};
 
EXPORT_NO_SYMBOLS;
 
static int bt856_init(void)
{
        return i2c_register_driver(&i2c_driver_bt856);
}
 
static void bt856_exit(void)
{
        i2c_unregister_driver(&i2c_driver_bt856);
}
 
module_init(bt856_init);
module_exit(bt856_exit);
MODULE_LICENSE("GPL");

Browse

Tools

Subversion Repositories or1k

[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [drivers/] [media/] [video/] [bt856.c] - Blame information for rev 1275

Line No.	Rev	Author	Line
1	1275	phoenix	`/*`
2			`bt856 - BT856A Digital Video Encoder (Rockwell Part)`
3
4			`Copyright (C) 1999 Mike Bernson <mike@mlb.org>`
5			`Copyright (C) 1998 Dave Perks <dperks@ibm.net>`
6
7			`Modifications for LML33/DC10plus unified driver`
8			`Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>`
9
10			`This code was modify/ported from the saa7111 driver written`
11			`by Dave Perks.`
12
13			`This program is free software; you can redistribute it and/or modify`
14			`it under the terms of the GNU General Public License as published by`
15			`the Free Software Foundation; either version 2 of the License, or`
16			`(at your option) any later version.`
17
18			`This program is distributed in the hope that it will be useful,`
19			`but WITHOUT ANY WARRANTY; without even the implied warranty of`
20			`MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the`
21			`GNU General Public License for more details.`
22
23			`You should have received a copy of the GNU General Public License`
24			`along with this program; if not, write to the Free Software`
25			`Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.`
26			`*/`
27
28			`#include <linux/module.h>`
29			`#include <linux/init.h>`
30			`#include <linux/delay.h>`
31			`#include <linux/errno.h>`
32			`#include <linux/fs.h>`
33			`#include <linux/kernel.h>`
34			`#include <linux/major.h>`
35			`#include <linux/slab.h>`
36			`#include <linux/mm.h>`
37			`#include <linux/pci.h>`
38			`#include <linux/signal.h>`
39			`#include <asm/io.h>`
40			`#include <asm/pgtable.h>`
41			`#include <asm/page.h>`
42			`#include <linux/sched.h>`
43			`#include <asm/segment.h>`
44			`#include <linux/types.h>`
45			`#include <linux/wrapper.h>`
46
47			`#include <linux/videodev.h>`
48			`#include <linux/version.h>`
49			`#include <asm/uaccess.h>`
50
51			`#include <linux/i2c-old.h>`
52			`#include <linux/video_encoder.h>`
53
54			`#define DEBUG(x) x /* Debug driver */`
55
56			`/* ----------------------------------------------------------------------- */`
57
58			`struct bt856 {`
59			`struct i2c_bus *bus;`
60			`int addr;`
61			`unsigned char reg[128];`
62
63			`int norm;`
64			`int enable;`
65			`int bright;`
66			`int contrast;`
67			`int hue;`
68			`int sat;`
69			`};`
70
71			`#define I2C_BT856 0x88`
72
73			`#define I2C_DELAY 10`
74
75			`/* ----------------------------------------------------------------------- */`
76
77			`static int bt856_write(struct bt856 *dev, unsigned char subaddr,`
78			`unsigned char data)`
79			`{`
80			`int ack;`
81
82			`LOCK_I2C_BUS(dev->bus);`
83
84			`i2c_start(dev->bus);`
85			`i2c_sendbyte(dev->bus, dev->addr, I2C_DELAY);`
86			`i2c_sendbyte(dev->bus, subaddr, I2C_DELAY);`
87			`ack = i2c_sendbyte(dev->bus, data, I2C_DELAY);`
88			`dev->reg[subaddr] = data;`
89			`i2c_stop(dev->bus);`
90			`UNLOCK_I2C_BUS(dev->bus);`
91			`return ack;`
92			`}`
93
94			`static int bt856_setbit(struct bt856 *dev, int subaddr, int bit, int data)`
95			`{`
96			`return bt856_write(dev, subaddr,(dev->reg[subaddr] & ~(1 << bit)) \| (data ? (1 << bit) : 0));`
97			`}`
98
99			`/* ----------------------------------------------------------------------- */`
100
101			`static int bt856_attach(struct i2c_device *device)`
102			`{`
103			`struct bt856 *encoder;`
104
105			`/* This chip is not on the buz card but at the same address saa7185 */`
106			`//if (memcmp(device->bus->name, "buz", 3) == 0 \|\| memcmp(device->bus->name, "zr36057", 6) == 0)`
107			`// return 1;`
108
109			`MOD_INC_USE_COUNT;`
110			`device->data = encoder = kmalloc(sizeof(struct bt856), GFP_KERNEL);`
111
112			`if (encoder == NULL) {`
113			`MOD_DEC_USE_COUNT;`
114			`return -ENOMEM;`
115			`}`
116
117
118			`memset(encoder, 0, sizeof(struct bt856));`
119			`strcpy(device->name, "bt856");`
120			`encoder->bus = device->bus;`
121			`encoder->addr = device->addr;`
122			`encoder->norm = VIDEO_MODE_NTSC;`
123			`encoder->enable = 1;`
124
125			`DEBUG(printk(KERN_INFO "%s-bt856: attach\n", encoder->bus->name));`
126
127			`bt856_write(encoder, 0xdc, 0x18);`
128			`bt856_write(encoder, 0xda, 0);`
129			`bt856_write(encoder, 0xde, 0);`
130
131			`bt856_setbit(encoder, 0xdc, 3, 1);`
132			`//bt856_setbit(encoder, 0xdc, 6, 0);`
133			`bt856_setbit(encoder, 0xdc, 4, 1);`
134
135			`switch (encoder->norm) {`
136
137			`case VIDEO_MODE_NTSC:`
138			`bt856_setbit(encoder, 0xdc, 2, 0);`
139			`break;`
140
141			`case VIDEO_MODE_PAL:`
142			`bt856_setbit(encoder, 0xdc, 2, 1);`
143			`break;`
144			`}`
145
146			`bt856_setbit(encoder, 0xdc, 1, 1);`
147			`bt856_setbit(encoder, 0xde, 4, 0);`
148			`bt856_setbit(encoder, 0xde, 3, 1);`
149			`return 0;`
150			`}`
151
152
153			`static int bt856_detach(struct i2c_device *device)`
154			`{`
155			`kfree(device->data);`
156			`MOD_DEC_USE_COUNT;`
157			`return 0;`
158			`}`
159
160			`static int bt856_command(struct i2c_device *device, unsigned int cmd,`
161			`void *arg)`
162			`{`
163			`struct bt856 *encoder = device->data;`
164
165			`switch (cmd) {`
166
167			`case ENCODER_GET_CAPABILITIES:`
168			`{`
169			`struct video_encoder_capability *cap = arg;`
170
171			`DEBUG(printk`
172			`(KERN_INFO "%s-bt856: get capabilities\n",`
173			`encoder->bus->name));`
174
175			`cap->flags`
176			`= VIDEO_ENCODER_PAL`
177			`\| VIDEO_ENCODER_NTSC \| VIDEO_ENCODER_CCIR;`
178			`cap->inputs = 2;`
179			`cap->outputs = 1;`
180			`}`
181			`break;`
182
183			`case ENCODER_SET_NORM:`
184			`{`
185			`int *iarg = arg;`
186
187			`DEBUG(printk(KERN_INFO "%s-bt856: set norm %d\n",`
188			`encoder->bus->name, *iarg));`
189
190			`switch (*iarg) {`
191
192			`case VIDEO_MODE_NTSC:`
193			`bt856_setbit(encoder, 0xdc, 2, 0);`
194			`break;`
195
196			`case VIDEO_MODE_PAL:`
197			`bt856_setbit(encoder, 0xdc, 2, 1);`
198			`bt856_setbit(encoder, 0xda, 0, 0);`
199			`//bt856_setbit(encoder, 0xda, 0, 1);`
200			`break;`
201
202			`default:`
203			`return -EINVAL;`
204
205			`}`
206			`encoder->norm = *iarg;`
207			`}`
208			`break;`
209
210			`case ENCODER_SET_INPUT:`
211			`{`
212			`int *iarg = arg;`
213
214			`DEBUG(printk(KERN_INFO "%s-bt856: set input %d\n",`
215			`encoder->bus->name, *iarg));`
216
217			`/* We only have video bus.`
218			`*iarg = 0: input is from bt819`
219			`iarg = 1: input is from ZR36060 /`
220
221			`switch (*iarg) {`
222
223			`case 0:`
224			`bt856_setbit(encoder, 0xde, 4, 0);`
225			`bt856_setbit(encoder, 0xde, 3, 1);`
226			`bt856_setbit(encoder, 0xdc, 3, 1);`
227			`bt856_setbit(encoder, 0xdc, 6, 0);`
228			`break;`
229			`case 1:`
230			`bt856_setbit(encoder, 0xde, 4, 0);`
231			`bt856_setbit(encoder, 0xde, 3, 1);`
232			`bt856_setbit(encoder, 0xdc, 3, 1);`
233			`bt856_setbit(encoder, 0xdc, 6, 1);`
234			`break;`
235			`case 2: // Color bar`
236			`bt856_setbit(encoder, 0xdc, 3, 0);`
237			`bt856_setbit(encoder, 0xde, 4, 1);`
238			`break;`
239			`default:`
240			`return -EINVAL;`
241
242			`}`
243			`}`
244			`break;`
245
246			`case ENCODER_SET_OUTPUT:`
247			`{`
248			`int *iarg = arg;`
249
250			`DEBUG(printk(KERN_INFO "%s-bt856: set output %d\n",`
251			`encoder->bus->name, *iarg));`
252
253			`/* not much choice of outputs */`
254			`if (*iarg != 0) {`
255			`return -EINVAL;`
256			`}`
257			`}`
258			`break;`
259
260			`case ENCODER_ENABLE_OUTPUT:`
261			`{`
262			`int *iarg = arg;`
263
264			`encoder->enable = !!*iarg;`
265
266			`DEBUG(printk`
267			`(KERN_INFO "%s-bt856: enable output %d\n",`
268			`encoder->bus->name, encoder->enable));`
269			`}`
270			`break;`
271
272			`default:`
273			`return -EINVAL;`
274			`}`
275
276			`return 0;`
277			`}`
278
279			`/* ----------------------------------------------------------------------- */`
280
281			`static struct i2c_driver i2c_driver_bt856 = {`
282			`"bt856", /* name */`
283			`I2C_DRIVERID_VIDEOENCODER, /* ID */`
284			`I2C_BT856, I2C_BT856 + 1,`
285			`bt856_attach,`
286			`bt856_detach,`
287			`bt856_command`
288			`};`
289
290			`EXPORT_NO_SYMBOLS;`
291
292			`static int bt856_init(void)`
293			`{`
294			`return i2c_register_driver(&i2c_driver_bt856);`
295			`}`
296
297			`static void bt856_exit(void)`
298			`{`
299			`i2c_unregister_driver(&i2c_driver_bt856);`
300			`}`
301
302			`module_init(bt856_init);`
303			`module_exit(bt856_exit);`
304			`MODULE_LICENSE("GPL");`