diff options
Diffstat (limited to 'drivers/media/video/saa7111.c')
-rw-r--r-- | drivers/media/video/saa7111.c | 627 |
1 files changed, 627 insertions, 0 deletions
diff --git a/drivers/media/video/saa7111.c b/drivers/media/video/saa7111.c new file mode 100644 index 000000000000..0a873112ae23 --- /dev/null +++ b/drivers/media/video/saa7111.c @@ -0,0 +1,627 @@ +/* + * saa7111 - Philips SAA7111A video decoder driver version 0.0.3 + * + * Copyright (C) 1998 Dave Perks <dperks@ibm.net> + * + * Slight changes for video timing and attachment output by + * Wolfgang Scherr <scherr@net4you.net> + * + * Changes by Ronald Bultje <rbultje@ronald.bitfreak.net> + * - moved over to linux>=2.4.x i2c protocol (1/1/2003) + * + * Changes by Michael Hunold <michael@mihu.de> + * - implemented DECODER_SET_GPIO, DECODER_INIT, DECODER_SET_VBI_BYPASS + * + * 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("Philips SAA7111 video decoder driver"); +MODULE_AUTHOR("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, 0644); +MODULE_PARM_DESC(debug, "Debug level (0-1)"); + +#define dprintk(num, format, args...) \ + do { \ + if (debug >= num) \ + printk(format, ##args); \ + } while (0) + +/* ----------------------------------------------------------------------- */ + +struct saa7111 { + unsigned char reg[32]; + + int norm; + int input; + int enable; + int bright; + int contrast; + int hue; + int sat; +}; + +#define I2C_SAA7111 0x48 + +/* ----------------------------------------------------------------------- */ + +static inline int +saa7111_write (struct i2c_client *client, + u8 reg, + u8 value) +{ + struct saa7111 *decoder = i2c_get_clientdata(client); + + decoder->reg[reg] = value; + return i2c_smbus_write_byte_data(client, reg, value); +} + +static int +saa7111_write_block (struct i2c_client *client, + const u8 *data, + unsigned int len) +{ + int ret = -1; + u8 reg; + + /* the saa7111 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 saa7111 *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 = saa7111_write(client, reg, + *data++)) < 0) + break; + len -= 2; + } + } + + return ret; +} + +static int +saa7111_init_decoder (struct i2c_client *client, + struct video_decoder_init *init) +{ + return saa7111_write_block(client, init->data, init->len); +} + +static inline int +saa7111_read (struct i2c_client *client, + u8 reg) +{ + return i2c_smbus_read_byte_data(client, reg); +} + +/* ----------------------------------------------------------------------- */ + +static const unsigned char saa7111_i2c_init[] = { + 0x00, 0x00, /* 00 - ID byte */ + 0x01, 0x00, /* 01 - reserved */ + + /*front end */ + 0x02, 0xd0, /* 02 - FUSE=3, GUDL=2, MODE=0 */ + 0x03, 0x23, /* 03 - HLNRS=0, VBSL=1, WPOFF=0, + * HOLDG=0, GAFIX=0, GAI1=256, GAI2=256 */ + 0x04, 0x00, /* 04 - GAI1=256 */ + 0x05, 0x00, /* 05 - GAI2=256 */ + + /* decoder */ + 0x06, 0xf3, /* 06 - HSB at 13(50Hz) / 17(60Hz) + * pixels after end of last line */ + /*0x07, 0x13, * 07 - HSS at 113(50Hz) / 117(60Hz) pixels + * after end of last line */ + 0x07, 0xe8, /* 07 - HSS seems to be needed to + * work with NTSC, too */ + 0x08, 0xc8, /* 08 - AUFD=1, FSEL=1, EXFIL=0, + * VTRC=1, HPLL=0, VNOI=0 */ + 0x09, 0x01, /* 09 - BYPS=0, PREF=0, BPSS=0, + * VBLB=0, UPTCV=0, APER=1 */ + 0x0a, 0x80, /* 0a - BRIG=128 */ + 0x0b, 0x47, /* 0b - CONT=1.109 */ + 0x0c, 0x40, /* 0c - SATN=1.0 */ + 0x0d, 0x00, /* 0d - HUE=0 */ + 0x0e, 0x01, /* 0e - CDTO=0, CSTD=0, DCCF=0, + * FCTC=0, CHBW=1 */ + 0x0f, 0x00, /* 0f - reserved */ + 0x10, 0x48, /* 10 - OFTS=1, HDEL=0, VRLN=1, YDEL=0 */ + 0x11, 0x1c, /* 11 - GPSW=0, CM99=0, FECO=0, COMPO=1, + * OEYC=1, OEHV=1, VIPB=0, COLO=0 */ + 0x12, 0x00, /* 12 - output control 2 */ + 0x13, 0x00, /* 13 - output control 3 */ + 0x14, 0x00, /* 14 - reserved */ + 0x15, 0x00, /* 15 - VBI */ + 0x16, 0x00, /* 16 - VBI */ + 0x17, 0x00, /* 17 - VBI */ +}; + +static int +saa7111_command (struct i2c_client *client, + unsigned int cmd, + void *arg) +{ + struct saa7111 *decoder = i2c_get_clientdata(client); + + switch (cmd) { + + case 0: + case DECODER_INIT: + { + struct video_decoder_init *init = arg; + if (NULL != init) + return saa7111_init_decoder(client, init); + else { + struct video_decoder_init vdi; + vdi.data = saa7111_i2c_init; + vdi.len = sizeof(saa7111_i2c_init); + return saa7111_init_decoder(client, &vdi); + } + } + + case DECODER_DUMP: + { + int i; + + for (i = 0; i < 32; i += 16) { + int j; + + printk(KERN_DEBUG "%s: %03x", I2C_NAME(client), i); + for (j = 0; j < 16; ++j) { + printk(" %02x", + saa7111_read(client, i + j)); + } + printk("\n"); + } + } + break; + + case DECODER_GET_CAPABILITIES: + { + struct video_decoder_capability *cap = arg; + + cap->flags = VIDEO_DECODER_PAL | + VIDEO_DECODER_NTSC | + VIDEO_DECODER_SECAM | + 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 = saa7111_read(client, 0x1f); + dprintk(1, KERN_DEBUG "%s status: 0x%02x\n", I2C_NAME(client), + status); + res = 0; + if ((status & (1 << 6)) == 0) { + 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; + case VIDEO_MODE_SECAM: + res |= DECODER_STATUS_SECAM; + break; + default: + case VIDEO_MODE_AUTO: + if ((status & (1 << 5)) != 0) { + res |= DECODER_STATUS_NTSC; + } else { + res |= DECODER_STATUS_PAL; + } + break; + } + if ((status & (1 << 0)) != 0) { + res |= DECODER_STATUS_COLOR; + } + *iarg = res; + } + break; + + case DECODER_SET_GPIO: + { + int *iarg = arg; + if (0 != *iarg) { + saa7111_write(client, 0x11, + (decoder->reg[0x11] | 0x80)); + } else { + saa7111_write(client, 0x11, + (decoder->reg[0x11] & 0x7f)); + } + break; + } + + case DECODER_SET_VBI_BYPASS: + { + int *iarg = arg; + if (0 != *iarg) { + saa7111_write(client, 0x13, + (decoder->reg[0x13] & 0xf0) | 0x0a); + } else { + saa7111_write(client, 0x13, + (decoder->reg[0x13] & 0xf0)); + } + break; + } + + case DECODER_SET_NORM: + { + int *iarg = arg; + + switch (*iarg) { + + case VIDEO_MODE_NTSC: + saa7111_write(client, 0x08, + (decoder->reg[0x08] & 0x3f) | 0x40); + saa7111_write(client, 0x0e, + (decoder->reg[0x0e] & 0x8f)); + break; + + case VIDEO_MODE_PAL: + saa7111_write(client, 0x08, + (decoder->reg[0x08] & 0x3f) | 0x00); + saa7111_write(client, 0x0e, + (decoder->reg[0x0e] & 0x8f)); + break; + + case VIDEO_MODE_SECAM: + saa7111_write(client, 0x08, + (decoder->reg[0x08] & 0x3f) | 0x00); + saa7111_write(client, 0x0e, + (decoder->reg[0x0e] & 0x8f) | 0x50); + break; + + case VIDEO_MODE_AUTO: + saa7111_write(client, 0x08, + (decoder->reg[0x08] & 0x3f) | 0x80); + saa7111_write(client, 0x0e, + (decoder->reg[0x0e] & 0x8f)); + break; + + default: + return -EINVAL; + + } + decoder->norm = *iarg; + } + break; + + case DECODER_SET_INPUT: + { + int *iarg = arg; + + if (*iarg < 0 || *iarg > 7) { + return -EINVAL; + } + + if (decoder->input != *iarg) { + decoder->input = *iarg; + /* select mode */ + saa7111_write(client, 0x02, + (decoder-> + reg[0x02] & 0xf8) | decoder->input); + /* bypass chrominance trap for modes 4..7 */ + saa7111_write(client, 0x09, + (decoder-> + reg[0x09] & 0x7f) | ((decoder-> + input > + 3) ? 0x80 : + 0)); + } + } + break; + + case DECODER_SET_OUTPUT: + { + int *iarg = arg; + + /* not much choice of outputs */ + if (*iarg != 0) { + return -EINVAL; + } + } + break; + + case DECODER_ENABLE_OUTPUT: + { + int *iarg = arg; + int enable = (*iarg != 0); + + if (decoder->enable != enable) { + decoder->enable = enable; + + /* RJ: If output should be disabled (for + * playing videos), we also need a open PLL. + * The input is set to 0 (where no input + * source is connected), although this + * is not necessary. + * + * If output should be enabled, we have to + * reverse the above. + */ + + if (decoder->enable) { + saa7111_write(client, 0x02, + (decoder-> + reg[0x02] & 0xf8) | + decoder->input); + saa7111_write(client, 0x08, + (decoder->reg[0x08] & 0xfb)); + saa7111_write(client, 0x11, + (decoder-> + reg[0x11] & 0xf3) | 0x0c); + } else { + saa7111_write(client, 0x02, + (decoder->reg[0x02] & 0xf8)); + saa7111_write(client, 0x08, + (decoder-> + reg[0x08] & 0xfb) | 0x04); + saa7111_write(client, 0x11, + (decoder->reg[0x11] & 0xf3)); + } + } + } + break; + + case DECODER_SET_PICTURE: + { + struct video_picture *pic = arg; + + if (decoder->bright != pic->brightness) { + /* We want 0 to 255 we get 0-65535 */ + decoder->bright = pic->brightness; + saa7111_write(client, 0x0a, decoder->bright >> 8); + } + if (decoder->contrast != pic->contrast) { + /* We want 0 to 127 we get 0-65535 */ + decoder->contrast = pic->contrast; + saa7111_write(client, 0x0b, + decoder->contrast >> 9); + } + if (decoder->sat != pic->colour) { + /* We want 0 to 127 we get 0-65535 */ + decoder->sat = pic->colour; + saa7111_write(client, 0x0c, decoder->sat >> 9); + } + if (decoder->hue != pic->hue) { + /* We want -128 to 127 we get 0-65535 */ + decoder->hue = pic->hue; + saa7111_write(client, 0x0d, + (decoder->hue - 32768) >> 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_SAA7111 >> 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_saa7111; + +static int +saa7111_detect_client (struct i2c_adapter *adapter, + int address, + int kind) +{ + int i; + struct i2c_client *client; + struct saa7111 *decoder; + struct video_decoder_init vdi; + + dprintk(1, + KERN_INFO + "saa7111.c: detecting saa7111 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_saa7111; + client->flags = I2C_CLIENT_ALLOW_USE; + strlcpy(I2C_NAME(client), "saa7111", sizeof(I2C_NAME(client))); + + decoder = kmalloc(sizeof(struct saa7111), GFP_KERNEL); + if (decoder == NULL) { + kfree(client); + return -ENOMEM; + } + memset(decoder, 0, sizeof(struct saa7111)); + decoder->norm = VIDEO_MODE_NTSC; + decoder->input = 0; + decoder->enable = 1; + decoder->bright = 32768; + decoder->contrast = 32768; + decoder->hue = 32768; + decoder->sat = 32768; + i2c_set_clientdata(client, decoder); + + i = i2c_attach_client(client); + if (i) { + kfree(client); + kfree(decoder); + return i; + } + + vdi.data = saa7111_i2c_init; + vdi.len = sizeof(saa7111_i2c_init); + i = saa7111_init_decoder(client, &vdi); + if (i < 0) { + dprintk(1, KERN_ERR "%s_attach error: init status %d\n", + I2C_NAME(client), i); + } else { + dprintk(1, + KERN_INFO + "%s_attach: chip version %x at address 0x%x\n", + I2C_NAME(client), saa7111_read(client, 0x00) >> 4, + client->addr << 1); + } + + return 0; +} + +static int +saa7111_attach_adapter (struct i2c_adapter *adapter) +{ + dprintk(1, + KERN_INFO + "saa7111.c: starting probe for adapter %s (0x%x)\n", + I2C_NAME(adapter), adapter->id); + return i2c_probe(adapter, &addr_data, &saa7111_detect_client); +} + +static int +saa7111_detach_client (struct i2c_client *client) +{ + struct saa7111 *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_saa7111 = { + .owner = THIS_MODULE, + .name = "saa7111", + + .id = I2C_DRIVERID_SAA7111A, + .flags = I2C_DF_NOTIFY, + + .attach_adapter = saa7111_attach_adapter, + .detach_client = saa7111_detach_client, + .command = saa7111_command, +}; + +static int __init +saa7111_init (void) +{ + return i2c_add_driver(&i2c_driver_saa7111); +} + +static void __exit +saa7111_exit (void) +{ + i2c_del_driver(&i2c_driver_saa7111); +} + +module_init(saa7111_init); +module_exit(saa7111_exit); |