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[/] [test_project/] [trunk/] [linux_sd_driver/] [drivers/] [media/] [video/] [bt819.c] - Blame information for rev 62

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/*
 *  bt819 - BT819A VideoStream Decoder (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>
 *
 * Changes by Ronald Bultje <rbultje@ronald.bitfreak.net>
 *    - moved over to linux>=2.4.x i2c protocol (9/9/2002)
 *
 * 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/signal.h>
#include <linux/types.h>
#include <linux/i2c.h>
#include <asm/io.h>
#include <asm/pgtable.h>
#include <asm/page.h>
#include <asm/uaccess.h>
 
#include <linux/videodev.h>
#include <linux/video_decoder.h>
 
 
MODULE_DESCRIPTION("Brooktree-819 video decoder driver");
MODULE_AUTHOR("Mike Bernson & Dave Perks");
MODULE_LICENSE("GPL");
 
 
#define I2C_NAME(s) (s)->name
 
 
static int debug = 0;
module_param(debug, int, 0);
MODULE_PARM_DESC(debug, "Debug level (0-1)");
 
#define dprintk(num, format, args...) \
        do { \
                if (debug >= num) \
                        printk(format, ##args); \
        } while (0)
 
/* ----------------------------------------------------------------------- */
 
struct bt819 {
        unsigned char reg[32];
 
        int initialized;
        int norm;
        int input;
        int enable;
        int bright;
        int contrast;
        int hue;
        int sat;
};
 
struct timing {
        int hactive;
        int hdelay;
        int vactive;
        int vdelay;
        int hscale;
        int vscale;
};
 
/* for values, see the bt819 datasheet */
static struct timing timing_data[] = {
        {864 - 24, 20, 625 - 2, 1, 0x0504, 0x0000},
        {858 - 24, 20, 525 - 2, 1, 0x00f8, 0x0000},
};
 
#define   I2C_BT819        0x8a
 
/* ----------------------------------------------------------------------- */
 
static inline int
bt819_write (struct i2c_client *client,
             u8                 reg,
             u8                 value)
{
        struct bt819 *decoder = i2c_get_clientdata(client);
 
        decoder->reg[reg] = value;
        return i2c_smbus_write_byte_data(client, reg, value);
}
 
static inline int
bt819_setbit (struct i2c_client *client,
              u8                 reg,
              u8                 bit,
              u8                 value)
{
        struct bt819 *decoder = i2c_get_clientdata(client);
 
        return bt819_write(client, reg,
                           (decoder->
                            reg[reg] & ~(1 << bit)) |
                            (value ? (1 << bit) : 0));
}
 
static int
bt819_write_block (struct i2c_client *client,
                   const u8          *data,
                   unsigned int       len)
{
        int ret = -1;
        u8 reg;
 
        /* the bt819 has an autoincrement function, use it if
         * the adapter understands raw I2C */
        if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
                /* do raw I2C, not smbus compatible */
                struct bt819 *decoder = i2c_get_clientdata(client);
                u8 block_data[32];
                int block_len;
 
                while (len >= 2) {
                        block_len = 0;
                        block_data[block_len++] = reg = data[0];
                        do {
                                block_data[block_len++] =
                                    decoder->reg[reg++] = data[1];
                                len -= 2;
                                data += 2;
                        } while (len >= 2 && data[0] == reg &&
                                 block_len < 32);
                        if ((ret = i2c_master_send(client, block_data,
                                                   block_len)) < 0)
                                break;
                }
        } else {
                /* do some slow I2C emulation kind of thing */
                while (len >= 2) {
                        reg = *data++;
                        if ((ret = bt819_write(client, reg, *data++)) < 0)
                                break;
                        len -= 2;
                }
        }
 
        return ret;
}
 
static inline int
bt819_read (struct i2c_client *client,
            u8                 reg)
{
        return i2c_smbus_read_byte_data(client, reg);
}
 
static int
bt819_init (struct i2c_client *client)
{
        struct bt819 *decoder = i2c_get_clientdata(client);
 
        static unsigned char init[] = {
                //0x1f, 0x00,     /* Reset */
                0x01, 0x59,     /* 0x01 input format */
                0x02, 0x00,     /* 0x02 temporal decimation */
                0x03, 0x12,     /* 0x03 Cropping msb */
                0x04, 0x16,     /* 0x04 Vertical Delay, lsb */
                0x05, 0xe0,     /* 0x05 Vertical Active lsb */
                0x06, 0x80,     /* 0x06 Horizontal Delay lsb */
                0x07, 0xd0,     /* 0x07 Horizontal Active lsb */
                0x08, 0x00,     /* 0x08 Horizontal Scaling msb */
                0x09, 0xf8,     /* 0x09 Horizontal Scaling lsb */
                0x0a, 0x00,     /* 0x0a Brightness control */
                0x0b, 0x30,     /* 0x0b Miscellaneous control */
                0x0c, 0xd8,     /* 0x0c Luma Gain lsb */
                0x0d, 0xfe,     /* 0x0d Chroma Gain (U) lsb */
                0x0e, 0xb4,     /* 0x0e Chroma Gain (V) msb */
                0x0f, 0x00,     /* 0x0f Hue control */
                0x12, 0x04,     /* 0x12 Output Format */
                0x13, 0x20,     /* 0x13 Vertial Scaling msb 0x00
                                           chroma comb OFF, line drop scaling, interlace scaling
                                           BUG? Why does turning the chroma comb on fuck up color?
                                           Bug in the bt819 stepping on my board?
                                        */
                0x14, 0x00,     /* 0x14 Vertial Scaling lsb */
                0x16, 0x07,     /* 0x16 Video Timing Polarity
                                           ACTIVE=active low
                                           FIELD: high=odd,
                                           vreset=active high,
                                           hreset=active high */
                0x18, 0x68,     /* 0x18 AGC Delay */
                0x19, 0x5d,     /* 0x19 Burst Gate Delay */
                0x1a, 0x80,     /* 0x1a ADC Interface */
        };
 
        struct timing *timing = &timing_data[decoder->norm];
 
        init[0x03 * 2 - 1] =
            (((timing->vdelay >> 8) & 0x03) << 6) | (((timing->
                                                       vactive >> 8) &
                                                      0x03) << 4) |
            (((timing->hdelay >> 8) & 0x03) << 2) | ((timing->
                                                      hactive >> 8) &
                                                     0x03);
        init[0x04 * 2 - 1] = timing->vdelay & 0xff;
        init[0x05 * 2 - 1] = timing->vactive & 0xff;
        init[0x06 * 2 - 1] = timing->hdelay & 0xff;
        init[0x07 * 2 - 1] = timing->hactive & 0xff;
        init[0x08 * 2 - 1] = timing->hscale >> 8;
        init[0x09 * 2 - 1] = timing->hscale & 0xff;
        /* 0x15 in array is address 0x19 */
        init[0x15 * 2 - 1] = (decoder->norm == 0) ? 115 : 93;    /* Chroma burst delay */
        /* reset */
        bt819_write(client, 0x1f, 0x00);
        mdelay(1);
 
        /* init */
        return bt819_write_block(client, init, sizeof(init));
 
}
 
/* ----------------------------------------------------------------------- */
 
static int
bt819_command (struct i2c_client *client,
               unsigned int       cmd,
               void              *arg)
{
        int temp;
 
        struct bt819 *decoder = i2c_get_clientdata(client);
 
        if (!decoder->initialized) {    // First call to bt819_init could be
                bt819_init(client);     // without #FRST = 0
                decoder->initialized = 1;
        }
 
        switch (cmd) {
 
        case 0:
                /* This is just for testing!!! */
                bt819_init(client);
                break;
 
        case DECODER_GET_CAPABILITIES:
        {
                struct video_decoder_capability *cap = arg;
 
                cap->flags = VIDEO_DECODER_PAL |
                             VIDEO_DECODER_NTSC |
                             VIDEO_DECODER_AUTO |
                             VIDEO_DECODER_CCIR;
                cap->inputs = 8;
                cap->outputs = 1;
        }
                break;
 
        case DECODER_GET_STATUS:
        {
                int *iarg = arg;
                int status;
                int res;
 
                status = bt819_read(client, 0x00);
                res = 0;
                if ((status & 0x80)) {
                        res |= DECODER_STATUS_GOOD;
                }
                switch (decoder->norm) {
                case VIDEO_MODE_NTSC:
                        res |= DECODER_STATUS_NTSC;
                        break;
                case VIDEO_MODE_PAL:
                        res |= DECODER_STATUS_PAL;
                        break;
                default:
                case VIDEO_MODE_AUTO:
                        if ((status & 0x10)) {
                                res |= DECODER_STATUS_PAL;
                        } else {
                                res |= DECODER_STATUS_NTSC;
                        }
                        break;
                }
                res |= DECODER_STATUS_COLOR;
                *iarg = res;
 
                dprintk(1, KERN_INFO "%s: get status %x\n", I2C_NAME(client),
                        *iarg);
        }
                break;
 
        case DECODER_SET_NORM:
        {
                int *iarg = arg;
                struct timing *timing = NULL;
 
                dprintk(1, KERN_INFO "%s: set norm %x\n", I2C_NAME(client),
                        *iarg);
 
                switch (*iarg) {
                case VIDEO_MODE_NTSC:
                        bt819_setbit(client, 0x01, 0, 1);
                        bt819_setbit(client, 0x01, 1, 0);
                        bt819_setbit(client, 0x01, 5, 0);
                        bt819_write(client, 0x18, 0x68);
                        bt819_write(client, 0x19, 0x5d);
                        //bt819_setbit(client, 0x1a,  5, 1);
                        timing = &timing_data[VIDEO_MODE_NTSC];
                        break;
                case VIDEO_MODE_PAL:
                        bt819_setbit(client, 0x01, 0, 1);
                        bt819_setbit(client, 0x01, 1, 1);
                        bt819_setbit(client, 0x01, 5, 1);
                        bt819_write(client, 0x18, 0x7f);
                        bt819_write(client, 0x19, 0x72);
                        //bt819_setbit(client, 0x1a,  5, 0);
                        timing = &timing_data[VIDEO_MODE_PAL];
                        break;
                case VIDEO_MODE_AUTO:
                        bt819_setbit(client, 0x01, 0, 0);
                        bt819_setbit(client, 0x01, 1, 0);
                        break;
                default:
                        dprintk(1,
                                KERN_ERR
                                "%s: unsupported norm %d\n",
                                I2C_NAME(client), *iarg);
                        return -EINVAL;
                }
 
                if (timing) {
                        bt819_write(client, 0x03,
                                    (((timing->vdelay >> 8) & 0x03) << 6) |
                                    (((timing->vactive >> 8) & 0x03) << 4) |
                                    (((timing->hdelay >> 8) & 0x03) << 2) |
                                     ((timing->hactive >> 8) & 0x03) );
                        bt819_write(client, 0x04, timing->vdelay & 0xff);
                        bt819_write(client, 0x05, timing->vactive & 0xff);
                        bt819_write(client, 0x06, timing->hdelay & 0xff);
                        bt819_write(client, 0x07, timing->hactive & 0xff);
                        bt819_write(client, 0x08, (timing->hscale >> 8) & 0xff);
                        bt819_write(client, 0x09, timing->hscale & 0xff);
                }
 
                decoder->norm = *iarg;
        }
                break;
 
        case DECODER_SET_INPUT:
        {
                int *iarg = arg;
 
                dprintk(1, KERN_INFO "%s: set input %x\n", I2C_NAME(client),
                        *iarg);
 
                if (*iarg < 0 || *iarg > 7) {
                        return -EINVAL;
                }
 
                if (decoder->input != *iarg) {
                        decoder->input = *iarg;
                        /* select mode */
                        if (decoder->input == 0) {
                                bt819_setbit(client, 0x0b, 6, 0);
                                bt819_setbit(client, 0x1a, 1, 1);
                        } else {
                                bt819_setbit(client, 0x0b, 6, 1);
                                bt819_setbit(client, 0x1a, 1, 0);
                        }
                }
        }
                break;
 
        case DECODER_SET_OUTPUT:
        {
                int *iarg = arg;
 
                dprintk(1, KERN_INFO "%s: set output %x\n", I2C_NAME(client),
                        *iarg);
 
                /* not much choice of outputs */
                if (*iarg != 0) {
                        return -EINVAL;
                }
        }
                break;
 
        case DECODER_ENABLE_OUTPUT:
        {
                int *iarg = arg;
                int enable = (*iarg != 0);
 
                dprintk(1, KERN_INFO "%s: enable output %x\n",
                        I2C_NAME(client), *iarg);
 
                if (decoder->enable != enable) {
                        decoder->enable = enable;
 
                        if (decoder->enable) {
                                bt819_setbit(client, 0x16, 7, 0);
                        } else {
                                bt819_setbit(client, 0x16, 7, 1);
                        }
                }
        }
                break;
 
        case DECODER_SET_PICTURE:
        {
                struct video_picture *pic = arg;
 
                dprintk(1,
                        KERN_INFO
                        "%s: set picture brightness %d contrast %d colour %d\n",
                        I2C_NAME(client), pic->brightness, pic->contrast,
                        pic->colour);
 
 
                if (decoder->bright != pic->brightness) {
                        /* We want -128 to 127 we get 0-65535 */
                        decoder->bright = pic->brightness;
                        bt819_write(client, 0x0a,
                                    (decoder->bright >> 8) - 128);
                }
 
                if (decoder->contrast != pic->contrast) {
                        /* We want 0 to 511 we get 0-65535 */
                        decoder->contrast = pic->contrast;
                        bt819_write(client, 0x0c,
                                    (decoder->contrast >> 7) & 0xff);
                        bt819_setbit(client, 0x0b, 2,
                                     ((decoder->contrast >> 15) & 0x01));
                }
 
                if (decoder->sat != pic->colour) {
                        /* We want 0 to 511 we get 0-65535 */
                        decoder->sat = pic->colour;
                        bt819_write(client, 0x0d,
                                    (decoder->sat >> 7) & 0xff);
                        bt819_setbit(client, 0x0b, 1,
                                     ((decoder->sat >> 15) & 0x01));
 
                        temp = (decoder->sat * 201) / 237;
                        bt819_write(client, 0x0e, (temp >> 7) & 0xff);
                        bt819_setbit(client, 0x0b, 0, (temp >> 15) & 0x01);
                }
 
                if (decoder->hue != pic->hue) {
                        /* We want -128 to 127 we get 0-65535 */
                        decoder->hue = pic->hue;
                        bt819_write(client, 0x0f,
                                    128 - (decoder->hue >> 8));
                }
        }
                break;
 
        default:
                return -EINVAL;
        }
 
        return 0;
}
 
/* ----------------------------------------------------------------------- */
 
/*
 * Generic i2c probe
 * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
 */
static unsigned short normal_i2c[] = {
        I2C_BT819 >> 1,
        I2C_CLIENT_END,
};
 
static unsigned short ignore = I2C_CLIENT_END;
 
static struct i2c_client_address_data addr_data = {
        .normal_i2c             = normal_i2c,
        .probe                  = &ignore,
        .ignore                 = &ignore,
};
 
static struct i2c_driver i2c_driver_bt819;
 
static int
bt819_detect_client (struct i2c_adapter *adapter,
                     int                 address,
                     int                 kind)
{
        int i, id;
        struct bt819 *decoder;
        struct i2c_client *client;
 
        dprintk(1,
                KERN_INFO
                "saa7111.c: detecting bt819 client on address 0x%x\n",
                address << 1);
 
        /* Check if the adapter supports the needed features */
        if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
                return 0;
 
        client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
        if (client == 0)
                return -ENOMEM;
        client->addr = address;
        client->adapter = adapter;
        client->driver = &i2c_driver_bt819;
 
        decoder = kzalloc(sizeof(struct bt819), GFP_KERNEL);
        if (decoder == NULL) {
                kfree(client);
                return -ENOMEM;
        }
        decoder->norm = VIDEO_MODE_NTSC;
        decoder->input = 0;
        decoder->enable = 1;
        decoder->bright = 32768;
        decoder->contrast = 32768;
        decoder->hue = 32768;
        decoder->sat = 32768;
        decoder->initialized = 0;
        i2c_set_clientdata(client, decoder);
 
        id = bt819_read(client, 0x17);
        switch (id & 0xf0) {
        case 0x70:
                strlcpy(I2C_NAME(client), "bt819a", sizeof(I2C_NAME(client)));
                break;
        case 0x60:
                strlcpy(I2C_NAME(client), "bt817a", sizeof(I2C_NAME(client)));
                break;
        case 0x20:
                strlcpy(I2C_NAME(client), "bt815a", sizeof(I2C_NAME(client)));
                break;
        default:
                dprintk(1,
                        KERN_ERR
                        "bt819: unknown chip version 0x%x (ver 0x%x)\n",
                        id & 0xf0, id & 0x0f);
                kfree(decoder);
                kfree(client);
                return 0;
        }
 
        i = i2c_attach_client(client);
        if (i) {
                kfree(client);
                kfree(decoder);
                return i;
        }
 
        i = bt819_init(client);
        if (i < 0) {
                dprintk(1, KERN_ERR "%s_attach: init status %d\n",
                        I2C_NAME(client), i);
        } else {
                dprintk(1,
                        KERN_INFO
                        "%s_attach: chip version 0x%x at address 0x%x\n",
                        I2C_NAME(client), id & 0x0f,
                        client->addr << 1);
        }
 
        return 0;
}
 
static int
bt819_attach_adapter (struct i2c_adapter *adapter)
{
        return i2c_probe(adapter, &addr_data, &bt819_detect_client);
}
 
static int
bt819_detach_client (struct i2c_client *client)
{
        struct bt819 *decoder = i2c_get_clientdata(client);
        int err;
 
        err = i2c_detach_client(client);
        if (err) {
                return err;
        }
 
        kfree(decoder);
        kfree(client);
 
        return 0;
}
 
/* ----------------------------------------------------------------------- */
 
static struct i2c_driver i2c_driver_bt819 = {
        .driver = {
                .name = "bt819",
        },
 
        .id = I2C_DRIVERID_BT819,
 
        .attach_adapter = bt819_attach_adapter,
        .detach_client = bt819_detach_client,
        .command = bt819_command,
};
 
static int __init
bt819_init_module (void)
{
        return i2c_add_driver(&i2c_driver_bt819);
}
 
static void __exit
bt819_exit (void)
{
        i2c_del_driver(&i2c_driver_bt819);
}
 
module_init(bt819_init_module);
module_exit(bt819_exit);

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[/] [test_project/] [trunk/] [linux_sd_driver/] [drivers/] [media/] [video/] [bt819.c] - Blame information for rev 62

Line No.	Rev	Author	Line
1	62	marcus.erl	`/*`
2			`* bt819 - BT819A VideoStream Decoder (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			`* Changes by Ronald Bultje <rbultje@ronald.bitfreak.net>`
11			`* - moved over to linux>=2.4.x i2c protocol (9/9/2002)`
12			`*`
13			`* This code was modify/ported from the saa7111 driver written`
14			`* by Dave Perks.`
15			`*`
16			`* This program is free software; you can redistribute it and/or modify`
17			`* it under the terms of the GNU General Public License as published by`
18			`* the Free Software Foundation; either version 2 of the License, or`
19			`* (at your option) any later version.`
20			`*`
21			`* This program is distributed in the hope that it will be useful,`
22			`* but WITHOUT ANY WARRANTY; without even the implied warranty of`
23			`* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the`
24			`* GNU General Public License for more details.`
25			`*`
26			`* You should have received a copy of the GNU General Public License`
27			`* along with this program; if not, write to the Free Software`
28			`* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.`
29			`*/`
30
31			`#include <linux/module.h>`
32			`#include <linux/init.h>`
33			`#include <linux/delay.h>`
34			`#include <linux/errno.h>`
35			`#include <linux/fs.h>`
36			`#include <linux/kernel.h>`
37			`#include <linux/major.h>`
38			`#include <linux/slab.h>`
39			`#include <linux/mm.h>`
40			`#include <linux/signal.h>`
41			`#include <linux/types.h>`
42			`#include <linux/i2c.h>`
43			`#include <asm/io.h>`
44			`#include <asm/pgtable.h>`
45			`#include <asm/page.h>`
46			`#include <asm/uaccess.h>`
47
48			`#include <linux/videodev.h>`
49			`#include <linux/video_decoder.h>`
50
51
52			`MODULE_DESCRIPTION("Brooktree-819 video decoder driver");`
53			`MODULE_AUTHOR("Mike Bernson & Dave Perks");`
54			`MODULE_LICENSE("GPL");`
55
56
57			`#define I2C_NAME(s) (s)->name`
58
59
60			`static int debug = 0;`
61			`module_param(debug, int, 0);`
62			`MODULE_PARM_DESC(debug, "Debug level (0-1)");`
63
64			`#define dprintk(num, format, args...) \`
65			`do { \`
66			`if (debug >= num) \`
67			`printk(format, ##args); \`
68			`} while (0)`
69
70			`/* ----------------------------------------------------------------------- */`
71
72			`struct bt819 {`
73			`unsigned char reg[32];`
74
75			`int initialized;`
76			`int norm;`
77			`int input;`
78			`int enable;`
79			`int bright;`
80			`int contrast;`
81			`int hue;`
82			`int sat;`
83			`};`
84
85			`struct timing {`
86			`int hactive;`
87			`int hdelay;`
88			`int vactive;`
89			`int vdelay;`
90			`int hscale;`
91			`int vscale;`
92			`};`
93
94			`/* for values, see the bt819 datasheet */`
95			`static struct timing timing_data[] = {`
96			`{864 - 24, 20, 625 - 2, 1, 0x0504, 0x0000},`
97			`{858 - 24, 20, 525 - 2, 1, 0x00f8, 0x0000},`
98			`};`
99
100			`#define I2C_BT819 0x8a`
101
102			`/* ----------------------------------------------------------------------- */`
103
104			`static inline int`
105			`bt819_write (struct i2c_client *client,`
106			`u8 reg,`
107			`u8 value)`
108			`{`
109			`struct bt819 *decoder = i2c_get_clientdata(client);`
110
111			`decoder->reg[reg] = value;`
112			`return i2c_smbus_write_byte_data(client, reg, value);`
113			`}`
114
115			`static inline int`
116			`bt819_setbit (struct i2c_client *client,`
117			`u8 reg,`
118			`u8 bit,`
119			`u8 value)`
120			`{`
121			`struct bt819 *decoder = i2c_get_clientdata(client);`
122
123			`return bt819_write(client, reg,`
124			`(decoder->`
125			`reg[reg] & ~(1 << bit)) \|`
126			`(value ? (1 << bit) : 0));`
127			`}`
128
129			`static int`
130			`bt819_write_block (struct i2c_client *client,`
131			`const u8 *data,`
132			`unsigned int len)`
133			`{`
134			`int ret = -1;`
135			`u8 reg;`
136
137			`/* the bt819 has an autoincrement function, use it if`
138			`* the adapter understands raw I2C */`
139			`if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {`
140			`/* do raw I2C, not smbus compatible */`
141			`struct bt819 *decoder = i2c_get_clientdata(client);`
142			`u8 block_data[32];`
143			`int block_len;`
144
145			`while (len >= 2) {`
146			`block_len = 0;`
147			`block_data[block_len++] = reg = data[0];`
148			`do {`
149			`block_data[block_len++] =`
150			`decoder->reg[reg++] = data[1];`
151			`len -= 2;`
152			`data += 2;`
153			`} while (len >= 2 && data[0] == reg &&`
154			`block_len < 32);`
155			`if ((ret = i2c_master_send(client, block_data,`
156			`block_len)) < 0)`
157			`break;`
158			`}`
159			`} else {`
160			`/* do some slow I2C emulation kind of thing */`
161			`while (len >= 2) {`
162			`reg = *data++;`
163			`if ((ret = bt819_write(client, reg, *data++)) < 0)`
164			`break;`
165			`len -= 2;`
166			`}`
167			`}`
168
169			`return ret;`
170			`}`
171
172			`static inline int`
173			`bt819_read (struct i2c_client *client,`
174			`u8 reg)`
175			`{`
176			`return i2c_smbus_read_byte_data(client, reg);`
177			`}`
178
179			`static int`
180			`bt819_init (struct i2c_client *client)`
181			`{`
182			`struct bt819 *decoder = i2c_get_clientdata(client);`
183
184			`static unsigned char init[] = {`
185			`//0x1f, 0x00, /* Reset */`
186			`0x01, 0x59, /* 0x01 input format */`
187			`0x02, 0x00, /* 0x02 temporal decimation */`
188			`0x03, 0x12, /* 0x03 Cropping msb */`
189			`0x04, 0x16, /* 0x04 Vertical Delay, lsb */`
190			`0x05, 0xe0, /* 0x05 Vertical Active lsb */`
191			`0x06, 0x80, /* 0x06 Horizontal Delay lsb */`
192			`0x07, 0xd0, /* 0x07 Horizontal Active lsb */`
193			`0x08, 0x00, /* 0x08 Horizontal Scaling msb */`
194			`0x09, 0xf8, /* 0x09 Horizontal Scaling lsb */`
195			`0x0a, 0x00, /* 0x0a Brightness control */`
196			`0x0b, 0x30, /* 0x0b Miscellaneous control */`
197			`0x0c, 0xd8, /* 0x0c Luma Gain lsb */`
198			`0x0d, 0xfe, /* 0x0d Chroma Gain (U) lsb */`
199			`0x0e, 0xb4, /* 0x0e Chroma Gain (V) msb */`
200			`0x0f, 0x00, /* 0x0f Hue control */`
201			`0x12, 0x04, /* 0x12 Output Format */`
202			`0x13, 0x20, /* 0x13 Vertial Scaling msb 0x00`
203			`chroma comb OFF, line drop scaling, interlace scaling`
204			`BUG? Why does turning the chroma comb on fuck up color?`
205			`Bug in the bt819 stepping on my board?`
206			`*/`
207			`0x14, 0x00, /* 0x14 Vertial Scaling lsb */`
208			`0x16, 0x07, /* 0x16 Video Timing Polarity`
209			`ACTIVE=active low`
210			`FIELD: high=odd,`
211			`vreset=active high,`
212			`hreset=active high */`
213			`0x18, 0x68, /* 0x18 AGC Delay */`
214			`0x19, 0x5d, /* 0x19 Burst Gate Delay */`
215			`0x1a, 0x80, /* 0x1a ADC Interface */`
216			`};`
217
218			`struct timing *timing = &timing_data[decoder->norm];`
219
220			`init[0x03 * 2 - 1] =`
221			`(((timing->vdelay >> 8) & 0x03) << 6) \| (((timing->`
222			`vactive >> 8) &`
223			`0x03) << 4) \|`
224			`(((timing->hdelay >> 8) & 0x03) << 2) \| ((timing->`
225			`hactive >> 8) &`
226			`0x03);`
227			`init[0x04 * 2 - 1] = timing->vdelay & 0xff;`
228			`init[0x05 * 2 - 1] = timing->vactive & 0xff;`
229			`init[0x06 * 2 - 1] = timing->hdelay & 0xff;`
230			`init[0x07 * 2 - 1] = timing->hactive & 0xff;`
231			`init[0x08 * 2 - 1] = timing->hscale >> 8;`
232			`init[0x09 * 2 - 1] = timing->hscale & 0xff;`
233			`/* 0x15 in array is address 0x19 */`
234			`init[0x15 * 2 - 1] = (decoder->norm == 0) ? 115 : 93; /* Chroma burst delay */`
235			`/* reset */`
236			`bt819_write(client, 0x1f, 0x00);`
237			`mdelay(1);`
238
239			`/* init */`
240			`return bt819_write_block(client, init, sizeof(init));`
241
242			`}`
243
244			`/* ----------------------------------------------------------------------- */`
245
246			`static int`
247			`bt819_command (struct i2c_client *client,`
248			`unsigned int cmd,`
249			`void *arg)`
250			`{`
251			`int temp;`
252
253			`struct bt819 *decoder = i2c_get_clientdata(client);`
254
255			`if (!decoder->initialized) { // First call to bt819_init could be`
256			`bt819_init(client); // without #FRST = 0`
257			`decoder->initialized = 1;`
258			`}`
259
260			`switch (cmd) {`
261
262			`case 0:`
263			`/* This is just for testing!!! */`
264			`bt819_init(client);`
265			`break;`
266
267			`case DECODER_GET_CAPABILITIES:`
268			`{`
269			`struct video_decoder_capability *cap = arg;`
270
271			`cap->flags = VIDEO_DECODER_PAL \|`
272			`VIDEO_DECODER_NTSC \|`
273			`VIDEO_DECODER_AUTO \|`
274			`VIDEO_DECODER_CCIR;`
275			`cap->inputs = 8;`
276			`cap->outputs = 1;`
277			`}`
278			`break;`
279
280			`case DECODER_GET_STATUS:`
281			`{`
282			`int *iarg = arg;`
283			`int status;`
284			`int res;`
285
286			`status = bt819_read(client, 0x00);`
287			`res = 0;`
288			`if ((status & 0x80)) {`
289			`res \|= DECODER_STATUS_GOOD;`
290			`}`
291			`switch (decoder->norm) {`
292			`case VIDEO_MODE_NTSC:`
293			`res \|= DECODER_STATUS_NTSC;`
294			`break;`
295			`case VIDEO_MODE_PAL:`
296			`res \|= DECODER_STATUS_PAL;`
297			`break;`
298			`default:`
299			`case VIDEO_MODE_AUTO:`
300			`if ((status & 0x10)) {`
301			`res \|= DECODER_STATUS_PAL;`
302			`} else {`
303			`res \|= DECODER_STATUS_NTSC;`
304			`}`
305			`break;`
306			`}`
307			`res \|= DECODER_STATUS_COLOR;`
308			`*iarg = res;`
309
310			`dprintk(1, KERN_INFO "%s: get status %x\n", I2C_NAME(client),`
311			`*iarg);`
312			`}`
313			`break;`
314
315			`case DECODER_SET_NORM:`
316			`{`
317			`int *iarg = arg;`
318			`struct timing *timing = NULL;`
319
320			`dprintk(1, KERN_INFO "%s: set norm %x\n", I2C_NAME(client),`
321			`*iarg);`
322
323			`switch (*iarg) {`
324			`case VIDEO_MODE_NTSC:`
325			`bt819_setbit(client, 0x01, 0, 1);`
326			`bt819_setbit(client, 0x01, 1, 0);`
327			`bt819_setbit(client, 0x01, 5, 0);`
328			`bt819_write(client, 0x18, 0x68);`
329			`bt819_write(client, 0x19, 0x5d);`
330			`//bt819_setbit(client, 0x1a, 5, 1);`
331			`timing = &timing_data[VIDEO_MODE_NTSC];`
332			`break;`
333			`case VIDEO_MODE_PAL:`
334			`bt819_setbit(client, 0x01, 0, 1);`
335			`bt819_setbit(client, 0x01, 1, 1);`
336			`bt819_setbit(client, 0x01, 5, 1);`
337			`bt819_write(client, 0x18, 0x7f);`
338			`bt819_write(client, 0x19, 0x72);`
339			`//bt819_setbit(client, 0x1a, 5, 0);`
340			`timing = &timing_data[VIDEO_MODE_PAL];`
341			`break;`
342			`case VIDEO_MODE_AUTO:`
343			`bt819_setbit(client, 0x01, 0, 0);`
344			`bt819_setbit(client, 0x01, 1, 0);`
345			`break;`
346			`default:`
347			`dprintk(1,`
348			`KERN_ERR`
349			`"%s: unsupported norm %d\n",`
350			`I2C_NAME(client), *iarg);`
351			`return -EINVAL;`
352			`}`
353
354			`if (timing) {`
355			`bt819_write(client, 0x03,`
356			`(((timing->vdelay >> 8) & 0x03) << 6) \|`
357			`(((timing->vactive >> 8) & 0x03) << 4) \|`
358			`(((timing->hdelay >> 8) & 0x03) << 2) \|`
359			`((timing->hactive >> 8) & 0x03) );`
360			`bt819_write(client, 0x04, timing->vdelay & 0xff);`
361			`bt819_write(client, 0x05, timing->vactive & 0xff);`
362			`bt819_write(client, 0x06, timing->hdelay & 0xff);`
363			`bt819_write(client, 0x07, timing->hactive & 0xff);`
364			`bt819_write(client, 0x08, (timing->hscale >> 8) & 0xff);`
365			`bt819_write(client, 0x09, timing->hscale & 0xff);`
366			`}`
367
368			`decoder->norm = *iarg;`
369			`}`
370			`break;`
371
372			`case DECODER_SET_INPUT:`
373			`{`
374			`int *iarg = arg;`
375
376			`dprintk(1, KERN_INFO "%s: set input %x\n", I2C_NAME(client),`
377			`*iarg);`
378
379			`if (iarg < 0 \|\| iarg > 7) {`
380			`return -EINVAL;`
381			`}`
382
383			`if (decoder->input != *iarg) {`
384			`decoder->input = *iarg;`
385			`/* select mode */`
386			`if (decoder->input == 0) {`
387			`bt819_setbit(client, 0x0b, 6, 0);`
388			`bt819_setbit(client, 0x1a, 1, 1);`
389			`} else {`
390			`bt819_setbit(client, 0x0b, 6, 1);`
391			`bt819_setbit(client, 0x1a, 1, 0);`
392			`}`
393			`}`
394			`}`
395			`break;`
396
397			`case DECODER_SET_OUTPUT:`
398			`{`
399			`int *iarg = arg;`
400
401			`dprintk(1, KERN_INFO "%s: set output %x\n", I2C_NAME(client),`
402			`*iarg);`
403
404			`/* not much choice of outputs */`
405			`if (*iarg != 0) {`
406			`return -EINVAL;`
407			`}`
408			`}`
409			`break;`
410
411			`case DECODER_ENABLE_OUTPUT:`
412			`{`
413			`int *iarg = arg;`
414			`int enable = (*iarg != 0);`
415
416			`dprintk(1, KERN_INFO "%s: enable output %x\n",`
417			`I2C_NAME(client), *iarg);`
418
419			`if (decoder->enable != enable) {`
420			`decoder->enable = enable;`
421
422			`if (decoder->enable) {`
423			`bt819_setbit(client, 0x16, 7, 0);`
424			`} else {`
425			`bt819_setbit(client, 0x16, 7, 1);`
426			`}`
427			`}`
428			`}`
429			`break;`
430
431			`case DECODER_SET_PICTURE:`
432			`{`
433			`struct video_picture *pic = arg;`
434
435			`dprintk(1,`
436			`KERN_INFO`
437			`"%s: set picture brightness %d contrast %d colour %d\n",`
438			`I2C_NAME(client), pic->brightness, pic->contrast,`
439			`pic->colour);`
440
441
442			`if (decoder->bright != pic->brightness) {`
443			`/* We want -128 to 127 we get 0-65535 */`
444			`decoder->bright = pic->brightness;`
445			`bt819_write(client, 0x0a,`
446			`(decoder->bright >> 8) - 128);`
447			`}`
448
449			`if (decoder->contrast != pic->contrast) {`
450			`/* We want 0 to 511 we get 0-65535 */`
451			`decoder->contrast = pic->contrast;`
452			`bt819_write(client, 0x0c,`
453			`(decoder->contrast >> 7) & 0xff);`
454			`bt819_setbit(client, 0x0b, 2,`
455			`((decoder->contrast >> 15) & 0x01));`
456			`}`
457
458			`if (decoder->sat != pic->colour) {`
459			`/* We want 0 to 511 we get 0-65535 */`
460			`decoder->sat = pic->colour;`
461			`bt819_write(client, 0x0d,`
462			`(decoder->sat >> 7) & 0xff);`
463			`bt819_setbit(client, 0x0b, 1,`
464			`((decoder->sat >> 15) & 0x01));`
465
466			`temp = (decoder->sat * 201) / 237;`
467			`bt819_write(client, 0x0e, (temp >> 7) & 0xff);`
468			`bt819_setbit(client, 0x0b, 0, (temp >> 15) & 0x01);`
469			`}`
470
471			`if (decoder->hue != pic->hue) {`
472			`/* We want -128 to 127 we get 0-65535 */`
473			`decoder->hue = pic->hue;`
474			`bt819_write(client, 0x0f,`
475			`128 - (decoder->hue >> 8));`
476			`}`
477			`}`
478			`break;`
479
480			`default:`
481			`return -EINVAL;`
482			`}`
483
484			`return 0;`
485			`}`
486
487			`/* ----------------------------------------------------------------------- */`
488
489			`/*`
490			`* Generic i2c probe`
491			`* concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'`
492			`*/`
493			`static unsigned short normal_i2c[] = {`
494			`I2C_BT819 >> 1,`
495			`I2C_CLIENT_END,`
496			`};`
497
498			`static unsigned short ignore = I2C_CLIENT_END;`
499
500			`static struct i2c_client_address_data addr_data = {`
501			`.normal_i2c = normal_i2c,`
502			`.probe = &ignore,`
503			`.ignore = &ignore,`
504			`};`
505
506			`static struct i2c_driver i2c_driver_bt819;`
507
508			`static int`
509			`bt819_detect_client (struct i2c_adapter *adapter,`
510			`int address,`
511			`int kind)`
512			`{`
513			`int i, id;`
514			`struct bt819 *decoder;`
515			`struct i2c_client *client;`
516
517			`dprintk(1,`
518			`KERN_INFO`
519			`"saa7111.c: detecting bt819 client on address 0x%x\n",`
520			`address << 1);`
521
522			`/* Check if the adapter supports the needed features */`
523			`if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))`
524			`return 0;`
525
526			`client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);`
527			`if (client == 0)`
528			`return -ENOMEM;`
529			`client->addr = address;`
530			`client->adapter = adapter;`
531			`client->driver = &i2c_driver_bt819;`
532
533			`decoder = kzalloc(sizeof(struct bt819), GFP_KERNEL);`
534			`if (decoder == NULL) {`
535			`kfree(client);`
536			`return -ENOMEM;`
537			`}`
538			`decoder->norm = VIDEO_MODE_NTSC;`
539			`decoder->input = 0;`
540			`decoder->enable = 1;`
541			`decoder->bright = 32768;`
542			`decoder->contrast = 32768;`
543			`decoder->hue = 32768;`
544			`decoder->sat = 32768;`
545			`decoder->initialized = 0;`
546			`i2c_set_clientdata(client, decoder);`
547
548			`id = bt819_read(client, 0x17);`
549			`switch (id & 0xf0) {`
550			`case 0x70:`
551			`strlcpy(I2C_NAME(client), "bt819a", sizeof(I2C_NAME(client)));`
552			`break;`
553			`case 0x60:`
554			`strlcpy(I2C_NAME(client), "bt817a", sizeof(I2C_NAME(client)));`
555			`break;`
556			`case 0x20:`
557			`strlcpy(I2C_NAME(client), "bt815a", sizeof(I2C_NAME(client)));`
558			`break;`
559			`default:`
560			`dprintk(1,`
561			`KERN_ERR`
562			`"bt819: unknown chip version 0x%x (ver 0x%x)\n",`
563			`id & 0xf0, id & 0x0f);`
564			`kfree(decoder);`
565			`kfree(client);`
566			`return 0;`
567			`}`
568
569			`i = i2c_attach_client(client);`
570			`if (i) {`
571			`kfree(client);`
572			`kfree(decoder);`
573			`return i;`
574			`}`
575
576			`i = bt819_init(client);`
577			`if (i < 0) {`
578			`dprintk(1, KERN_ERR "%s_attach: init status %d\n",`
579			`I2C_NAME(client), i);`
580			`} else {`
581			`dprintk(1,`
582			`KERN_INFO`
583			`"%s_attach: chip version 0x%x at address 0x%x\n",`
584			`I2C_NAME(client), id & 0x0f,`
585			`client->addr << 1);`
586			`}`
587
588			`return 0;`
589			`}`
590
591			`static int`
592			`bt819_attach_adapter (struct i2c_adapter *adapter)`
593			`{`
594			`return i2c_probe(adapter, &addr_data, &bt819_detect_client);`
595			`}`
596
597			`static int`
598			`bt819_detach_client (struct i2c_client *client)`
599			`{`
600			`struct bt819 *decoder = i2c_get_clientdata(client);`
601			`int err;`
602
603			`err = i2c_detach_client(client);`
604			`if (err) {`
605			`return err;`
606			`}`
607
608			`kfree(decoder);`
609			`kfree(client);`
610
611			`return 0;`
612			`}`
613
614			`/* ----------------------------------------------------------------------- */`
615
616			`static struct i2c_driver i2c_driver_bt819 = {`
617			`.driver = {`
618			`.name = "bt819",`
619			`},`
620
621			`.id = I2C_DRIVERID_BT819,`
622
623			`.attach_adapter = bt819_attach_adapter,`
624			`.detach_client = bt819_detach_client,`
625			`.command = bt819_command,`
626			`};`
627
628			`static int __init`
629			`bt819_init_module (void)`
630			`{`
631			`return i2c_add_driver(&i2c_driver_bt819);`
632			`}`
633
634			`static void __exit`
635			`bt819_exit (void)`
636			`{`
637			`i2c_del_driver(&i2c_driver_bt819);`
638			`}`
639
640			`module_init(bt819_init_module);`
641			`module_exit(bt819_exit);`