/* * 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/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("Philips SAA7111 video decoder driver"); MODULE_AUTHOR("Dave Perks"); MODULE_LICENSE("GPL"); #define I2C_NAME(s) (s)->name static int debug; 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) /* ----------------------------------------------------------------------- */ #define SAA7111_NR_REG 0x18 struct saa7111 { unsigned char reg[SAA7111_NR_REG]; int norm; int input; int enable; }; #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 inline void saa7111_write_if_changed(struct i2c_client *client, u8 reg, u8 value) { struct saa7111 *decoder = i2c_get_clientdata(client); if (decoder->reg[reg] != value) { decoder->reg[reg] = value; 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); 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 = 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: break; 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 < SAA7111_NR_REG; i += 16) { int j; printk(KERN_DEBUG "%s: %03x", I2C_NAME(client), i); for (j = 0; j < 16 && i + j < SAA7111_NR_REG; ++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; /* We want 0 to 255 we get 0-65535 */ saa7111_write_if_changed(client, 0x0a, pic->brightness >> 8); /* We want 0 to 127 we get 0-65535 */ saa7111_write(client, 0x0b, pic->contrast >> 9); /* We want 0 to 127 we get 0-65535 */ saa7111_write(client, 0x0c, pic->colour >> 9); /* We want -128 to 127 we get 0-65535 */ saa7111_write(client, 0x0d, (pic->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 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_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 = kzalloc(sizeof(struct i2c_client), GFP_KERNEL); if (!client) return -ENOMEM; client->addr = address; client->adapter = adapter; client->driver = &i2c_driver_saa7111; strlcpy(I2C_NAME(client), "saa7111", sizeof(I2C_NAME(client))); decoder = kzalloc(sizeof(struct saa7111), GFP_KERNEL); if (decoder == NULL) { kfree(client); return -ENOMEM; } decoder->norm = VIDEO_MODE_NTSC; decoder->input = 0; decoder->enable = 1; 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 = { .driver = { .name = "saa7111", }, .id = I2C_DRIVERID_SAA7111A, .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);