diff options
Diffstat (limited to 'drivers/media/video/bt819.c')
| -rw-r--r-- | drivers/media/video/bt819.c | 660 |
1 files changed, 660 insertions, 0 deletions
diff --git a/drivers/media/video/bt819.c b/drivers/media/video/bt819.c new file mode 100644 index 000000000000..cf0db2554a80 --- /dev/null +++ b/drivers/media/video/bt819.c @@ -0,0 +1,660 @@ +/* + * 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/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/videodev.h> +#include <asm/uaccess.h> + +MODULE_DESCRIPTION("Brooktree-819 video decoder driver"); +MODULE_AUTHOR("Mike Bernson & Dave Perks"); +MODULE_LICENSE("GPL"); + +#include <linux/i2c.h> +#include <linux/i2c-dev.h> + +#define I2C_NAME(s) (s)->name + +#include <linux/video_decoder.h> + +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); + struct i2c_msg msg; + u8 block_data[32]; + + msg.addr = client->addr; + msg.flags = 0; + while (len >= 2) { + msg.buf = (char *) block_data; + msg.len = 0; + block_data[msg.len++] = reg = data[0]; + do { + block_data[msg.len++] = + decoder->reg[reg++] = data[1]; + len -= 2; + data += 2; + } while (len >= 2 && data[0] == reg && + msg.len < 32); + if ((ret = i2c_transfer(client->adapter, + &msg, 1)) < 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 normal_i2c_range[] = { I2C_CLIENT_END }; + +static unsigned short probe[2] = { I2C_CLIENT_END, I2C_CLIENT_END }; +static unsigned short probe_range[2] = { I2C_CLIENT_END, I2C_CLIENT_END }; +static unsigned short ignore[2] = { I2C_CLIENT_END, I2C_CLIENT_END }; +static unsigned short ignore_range[2] = { I2C_CLIENT_END, I2C_CLIENT_END }; +static unsigned short force[2] = { I2C_CLIENT_END , I2C_CLIENT_END }; + +static struct i2c_client_address_data addr_data = { + .normal_i2c = normal_i2c, + .normal_i2c_range = normal_i2c_range, + .probe = probe, + .probe_range = probe_range, + .ignore = ignore, + .ignore_range = ignore_range, + .force = force +}; + +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 = kmalloc(sizeof(struct i2c_client), GFP_KERNEL); + if (client == 0) + return -ENOMEM; + memset(client, 0, sizeof(struct i2c_client)); + client->addr = address; + client->adapter = adapter; + client->driver = &i2c_driver_bt819; + client->flags = I2C_CLIENT_ALLOW_USE; + + decoder = kmalloc(sizeof(struct bt819), GFP_KERNEL); + if (decoder == NULL) { + kfree(client); + return -ENOMEM; + } + + memset(decoder, 0, sizeof(struct bt819)); + 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 = { + .owner = THIS_MODULE, + .name = "bt819", + + .id = I2C_DRIVERID_BT819, + .flags = I2C_DF_NOTIFY, + + .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); |