Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Mon, 12 Aug 2002 09:54:09 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Mon, 12 Aug 2002 09:54:09 -0400 Received: from rwcrmhc51.attbi.com ([204.127.198.38]:39583 "EHLO rwcrmhc51.attbi.com") by vger.kernel.org with ESMTP id ; Mon, 12 Aug 2002 09:53:48 -0400 Message-ID: <3D57BECB.4EF2F0DE@attbi.com> Date: Mon, 12 Aug 2002 09:57:31 -0400 From: Albert Cranford X-Mailer: Mozilla 4.79 [en] (X11; U; Linux 2.5.31 i686) X-Accept-Language: en MIME-Version: 1.0 To: Linus Torvalds , Linux Kernel List Subject: [patch 2/4] 2.5.31 i2c updates Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 29683 Lines: 725 Hello Linus, Please apply the following four tested patches that update 2.5.31 with these I2C changes: o Support for SMBus 2.0 PEC Packet Error Checking o New adapter-i2c-frodo for SA 1110 board o New adapter-i2c-rpx for embeded MPC8XX o Replace depreciated cli()&sti() with spin_{un}lock_irq() o Updated documentation Thanks, Albert --- linux/drivers/i2c/i2c-core.c.orig 2002-07-05 19:42:07.000000000 -0400 +++ linux/drivers/i2c/i2c-core.c 2002-07-07 21:37:15.000000000 -0400 @@ -18,9 +18,10 @@ /* ------------------------------------------------------------------------- */ /* With some changes from Ky?sti M?lkki . - All SMBus-related things are written by Frodo Looijaard */ + All SMBus-related things are written by Frodo Looijaard + SMBus 2.0 support by Mark Studebaker */ -/* $Id: i2c-core.c,v 1.73 2002/03/03 17:37:44 mds Exp $ */ +/* $Id: i2c-core.c,v 1.83 2002/07/08 01:37:15 mds Exp $ */ #include #include @@ -71,7 +72,7 @@ static int driver_count; /**** debug level */ -static int i2c_debug=1; +static int i2c_debug=1; /* --------------------------------------------------- * /proc entry declarations @@ -371,7 +372,7 @@ struct i2c_client *client = adap->clients[j]; if (client != NULL && client->driver == driver) { - DEB2(printk("i2c-core.o: " + DEB2(printk(KERN_DEBUG "i2c-core.o: " "detaching client %s:\n", client->name)); if ((res = driver-> @@ -1002,6 +1001,123 @@ /* The SMBus parts */ +#define POLY (0x1070U << 3) +static u8 +crc8(u16 data) +{ + int i; + + for(i = 0; i < 8; i++) { + if (data & 0x8000) + data = data ^ POLY; + data = data << 1; + } + return (u8)(data >> 8); +} + +/* CRC over count bytes in the first array plus the bytes in the rest + array if it is non-null. rest[0] is the (length of rest) - 1 + and is included. */ +u8 i2c_smbus_partial_pec(u8 crc, int count, u8 *first, u8 *rest) +{ + int i; + + for(i = 0; i < count; i++) + crc = crc8((crc ^ first[i]) << 8); + if(rest != NULL) + for(i = 0; i <= rest[0]; i++) + crc = crc8((crc ^ rest[i]) << 8); + return crc; +} + +u8 i2c_smbus_pec(int count, u8 *first, u8 *rest) +{ + return i2c_smbus_partial_pec(0, count, first, rest); +} + +/* Returns new "size" (transaction type) + Note that we convert byte to byte_data and byte_data to word_data + rather than invent new xxx_PEC transactions. */ +int i2c_smbus_add_pec(u16 addr, u8 command, int size, + union i2c_smbus_data *data) +{ + u8 buf[3]; + + buf[0] = addr << 1; + buf[1] = command; + switch(size) { + case I2C_SMBUS_BYTE: + data->byte = i2c_smbus_pec(2, buf, NULL); + size = I2C_SMBUS_BYTE_DATA; + break; + case I2C_SMBUS_BYTE_DATA: + buf[2] = data->byte; + data->word = buf[2] || + (i2c_smbus_pec(3, buf, NULL) << 8); + size = I2C_SMBUS_WORD_DATA; + break; + case I2C_SMBUS_WORD_DATA: + /* unsupported */ + break; + case I2C_SMBUS_BLOCK_DATA: + data->block[data->block[0] + 1] = + i2c_smbus_pec(2, buf, data->block); + size = I2C_SMBUS_BLOCK_DATA_PEC; + break; + } + return size; +} + +int i2c_smbus_check_pec(u16 addr, u8 command, int size, u8 partial, + union i2c_smbus_data *data) +{ + u8 buf[3], rpec, cpec; + + buf[1] = command; + switch(size) { + case I2C_SMBUS_BYTE_DATA: + buf[0] = (addr << 1) | 1; + cpec = i2c_smbus_pec(2, buf, NULL); + rpec = data->byte; + break; + case I2C_SMBUS_WORD_DATA: + buf[0] = (addr << 1) | 1; + buf[2] = data->word & 0xff; + cpec = i2c_smbus_pec(3, buf, NULL); + rpec = data->word >> 8; + break; + case I2C_SMBUS_WORD_DATA_PEC: + /* unsupported */ + cpec = rpec = 0; + break; + case I2C_SMBUS_PROC_CALL_PEC: + /* unsupported */ + cpec = rpec = 0; + break; + case I2C_SMBUS_BLOCK_DATA_PEC: + buf[0] = (addr << 1); + buf[2] = (addr << 1) | 1; + cpec = i2c_smbus_pec(3, buf, data->block); + rpec = data->block[data->block[0] + 1]; + break; + case I2C_SMBUS_BLOCK_PROC_CALL_PEC: + buf[0] = (addr << 1) | 1; + rpec = i2c_smbus_partial_pec(partial, 1, + buf, data->block); + cpec = data->block[data->block[0] + 1]; + break; + default: + cpec = rpec = 0; + break; + } + if(rpec != cpec) { + DEB(printk(KERN_DEBUG "i2c-core.o: Bad PEC 0x%02x vs. 0x%02x\n", + rpec, cpec)); + return -1; + } + return 0; +} + extern s32 i2c_smbus_write_quick(struct i2c_client * client, u8 value) { return i2c_smbus_xfer(client->adapter,client->addr,client->flags, @@ -1020,8 +1136,9 @@ extern s32 i2c_smbus_write_byte(struct i2c_client * client, u8 value) { + union i2c_smbus_data data; /* only for PEC */ return i2c_smbus_xfer(client->adapter,client->addr,client->flags, - I2C_SMBUS_WRITE,value, I2C_SMBUS_BYTE,NULL); + I2C_SMBUS_WRITE,value, I2C_SMBUS_BYTE,&data); } extern s32 i2c_smbus_read_byte_data(struct i2c_client * client, u8 command) @@ -1099,8 +1216,8 @@ { union i2c_smbus_data data; int i; - if (length > 32) - length = 32; + if (length > I2C_SMBUS_BLOCK_MAX) + length = I2C_SMBUS_BLOCK_MAX; for (i = 1; i <= length; i++) data.block[i] = values[i-1]; data.block[0] = length; @@ -1110,6 +1227,26 @@ } /* Returns the number of read bytes */ +extern s32 i2c_smbus_block_process_call(struct i2c_client * client, + u8 command, u8 length, u8 *values) +{ + union i2c_smbus_data data; + int i; + if (length > I2C_SMBUS_BLOCK_MAX - 1) + return -1; + data.block[0] = length; + for (i = 1; i <= length; i++) + data.block[i] = values[i-1]; + if(i2c_smbus_xfer(client->adapter,client->addr,client->flags, + I2C_SMBUS_WRITE, command, + I2C_SMBUS_BLOCK_PROC_CALL, &data)) + return -1; + for (i = 1; i <= data.block[0]; i++) + values[i-1] = data.block[i]; + return data.block[0]; +} + +/* Returns the number of read bytes */ extern s32 i2c_smbus_read_i2c_block_data(struct i2c_client * client, u8 command, u8 *values) { @@ -1131,8 +1268,8 @@ { union i2c_smbus_data data; int i; - if (length > 32) - length = 32; + if (length > I2C_SMBUS_I2C_BLOCK_MAX) + length = I2C_SMBUS_I2C_BLOCK_MAX; for (i = 1; i <= length; i++) data.block[i] = values[i-1]; data.block[0] = length; @@ -1194,34 +1331,43 @@ break; case I2C_SMBUS_PROC_CALL: num = 2; /* Special case */ + read_write = I2C_SMBUS_READ; msg[0].len = 3; msg[1].len = 2; msgbuf0[1] = data->word & 0xff; msgbuf0[2] = (data->word >> 8) & 0xff; break; case I2C_SMBUS_BLOCK_DATA: + case I2C_SMBUS_BLOCK_DATA_PEC: if (read_write == I2C_SMBUS_READ) { - printk(KERN_ERR "i2c-core.o: Block read not supported under " - "I2C emulation!\n"); - return -1; + printk(KERN_ERR "i2c-core.o: Block read not supported " + "under I2C emulation!\n"); + return -1; } else { msg[0].len = data->block[0] + 2; - if (msg[0].len > 34) { + if (msg[0].len > I2C_SMBUS_BLOCK_MAX + 2) { printk(KERN_ERR "i2c-core.o: smbus_access called with " "invalid block write size (%d)\n", data->block[0]); return -1; } + if(size == I2C_SMBUS_BLOCK_DATA_PEC) + (msg[0].len)++; for (i = 1; i <= msg[0].len; i++) msgbuf0[i] = data->block[i-1]; } break; + case I2C_SMBUS_BLOCK_PROC_CALL: + case I2C_SMBUS_BLOCK_PROC_CALL_PEC: + printk(KERN_ERR "i2c-core.o: Block process call not supported " + "under I2C emulation!\n"); + return -1; case I2C_SMBUS_I2C_BLOCK_DATA: if (read_write == I2C_SMBUS_READ) { - msg[1].len = 32; + msg[1].len = I2C_SMBUS_I2C_BLOCK_MAX; } else { msg[0].len = data->block[0] + 2; - if (msg[0].len > 34) { + if (msg[0].len > I2C_SMBUS_I2C_BLOCK_MAX + 2) { printk("i2c-core.o: i2c_smbus_xfer_emulated called with " "invalid block write size (%d)\n", data->block[0]); @@ -1254,8 +1400,8 @@ break; case I2C_SMBUS_I2C_BLOCK_DATA: /* fixed at 32 for now */ - data->block[0] = 32; - for (i = 0; i < 32; i++) + data->block[0] = I2C_SMBUS_I2C_BLOCK_MAX; + for (i = 0; i < I2C_SMBUS_I2C_BLOCK_MAX; i++) data->block[i+1] = msgbuf1[i]; break; } @@ -1268,7 +1414,29 @@ union i2c_smbus_data * data) { s32 res; - flags = flags & I2C_M_TEN; + int swpec = 0; + u8 partial = 0; + + flags &= I2C_M_TEN | I2C_CLIENT_PEC; + if((flags & I2C_CLIENT_PEC) && + !(i2c_check_functionality(adapter, I2C_FUNC_SMBUS_HWPEC_CALC))) { + swpec = 1; + if(read_write == I2C_SMBUS_READ && + size == I2C_SMBUS_BLOCK_DATA) + size = I2C_SMBUS_BLOCK_DATA_PEC; + else if(size == I2C_SMBUS_PROC_CALL) + size = I2C_SMBUS_PROC_CALL_PEC; + else if(size == I2C_SMBUS_BLOCK_PROC_CALL) { + i2c_smbus_add_pec(addr, command, + I2C_SMBUS_BLOCK_DATA, data); + partial = data->block[data->block[0] + 1]; + size = I2C_SMBUS_BLOCK_PROC_CALL_PEC; + } else if(read_write == I2C_SMBUS_WRITE && + size != I2C_SMBUS_QUICK && + size != I2C_SMBUS_I2C_BLOCK_DATA) + size = i2c_smbus_add_pec(addr, command, size, data); + } + if (adapter->algo->smbus_xfer) { I2C_LOCK(adapter); res = adapter->algo->smbus_xfer(adapter,addr,flags,read_write, @@ -1277,6 +1445,14 @@ } else res = i2c_smbus_xfer_emulated(adapter,addr,flags,read_write, command,size,data); + + if(res >= 0 && swpec && + size != I2C_SMBUS_QUICK && size != I2C_SMBUS_I2C_BLOCK_DATA && + (read_write == I2C_SMBUS_READ || size == I2C_SMBUS_PROC_CALL_PEC || + size == I2C_SMBUS_BLOCK_PROC_CALL_PEC)) { + if(i2c_smbus_check_pec(addr, command, size, partial, data)) + return -1; + } return res; } --- linux/drivers/i2c/i2c-dev.c.orig 2002-07-05 19:42:33.000000000 -0400 +++ linux/drivers/i2c/i2c-dev.c 2002-07-05 22:07:39.000000000 -0400 @@ -28,7 +28,7 @@ /* The devfs code is contributed by Philipp Matthias Hahn */ -/* $Id: i2c-dev.c,v 1.44 2001/11/19 18:45:02 mds Exp $ */ +/* $Id: i2c-dev.c,v 1.46 2002/07/06 02:07:39 mds Exp $ */ #include #include @@ -236,6 +236,12 @@ else client->flags &= ~I2C_M_TEN; return 0; + case I2C_PEC: + if (arg) + client->flags |= I2C_CLIENT_PEC; + else + client->flags &= ~I2C_CLIENT_PEC; + return 0; case I2C_FUNCS: funcs = i2c_get_functionality(client->adapter); return (copy_to_user((unsigned long *)arg,&funcs, @@ -312,7 +318,8 @@ (data_arg.size != I2C_SMBUS_WORD_DATA) && (data_arg.size != I2C_SMBUS_PROC_CALL) && (data_arg.size != I2C_SMBUS_BLOCK_DATA) && - (data_arg.size != I2C_SMBUS_I2C_BLOCK_DATA)) { + (data_arg.size != I2C_SMBUS_I2C_BLOCK_DATA) && + (data_arg.size != I2C_SMBUS_BLOCK_PROC_CALL)) { #ifdef DEBUG printk(KERN_DEBUG "i2c-dev.o: size out of range (%x) in ioctl I2C_SMBUS.\n", data_arg.size); @@ -355,10 +362,11 @@ else if ((data_arg.size == I2C_SMBUS_WORD_DATA) || (data_arg.size == I2C_SMBUS_PROC_CALL)) datasize = sizeof(data_arg.data->word); - else /* size == I2C_SMBUS_BLOCK_DATA */ + else /* size == smbus block, i2c block, or block proc. call */ datasize = sizeof(data_arg.data->block); if ((data_arg.size == I2C_SMBUS_PROC_CALL) || + (data_arg.size == I2C_SMBUS_BLOCK_PROC_CALL) || (data_arg.read_write == I2C_SMBUS_WRITE)) { if (copy_from_user(&temp, data_arg.data, datasize)) return -EFAULT; @@ -367,6 +375,7 @@ data_arg.read_write, data_arg.command,data_arg.size,&temp); if (! res && ((data_arg.size == I2C_SMBUS_PROC_CALL) || + (data_arg.size == I2C_SMBUS_BLOCK_PROC_CALL) || (data_arg.read_write == I2C_SMBUS_READ))) { if (copy_to_user(data_arg.data, &temp, datasize)) return -EFAULT; @@ -535,6 +544,8 @@ return 0; } +EXPORT_NO_SYMBOLS; + #ifdef MODULE MODULE_AUTHOR("Frodo Looijaard and Simon G. Vogl "); --- linux/include/linux/i2c-dev.h.orig 2002-07-05 19:42:19.000000000 -0400 +++ linux/include/linux/i2c-dev.h 2002-07-07 11:42:47.000000000 -0400 @@ -19,7 +19,7 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ -/* $Id: i2c-dev.h,v 1.10 2001/11/19 19:01:46 mds Exp $ */ +/* $Id: i2c-dev.h,v 1.11 2002/07/07 15:42:47 mds Exp $ */ #ifndef I2C_DEV_H #define I2C_DEV_H @@ -144,7 +144,7 @@ else { for (i = 1; i <= data.block[0]; i++) values[i-1] = data.block[i]; - return data.block[0]; + return data.block[0]; } } @@ -192,6 +192,27 @@ I2C_SMBUS_I2C_BLOCK_DATA, &data); } +/* Returns the number of read bytes */ +static inline __s32 i2c_smbus_block_process_call(int file, __u8 command, + __u8 length, __u8 *values) +{ + union i2c_smbus_data data; + int i; + if (length > 32) + length = 32; + for (i = 1; i <= length; i++) + data.block[i] = values[i-1]; + data.block[0] = length; + if (i2c_smbus_access(file,I2C_SMBUS_WRITE,command, + I2C_SMBUS_BLOCK_PROC_CALL,&data)) + return -1; + else { + for (i = 1; i <= data.block[0]; i++) + values[i-1] = data.block[i]; + return data.block[0]; + } +} + #endif /* ndef __KERNEL__ */ #endif --- linux/include/linux/i2c-id.h.orig 2002-07-05 19:42:03.000000000 -0400 +++ linux/include/linux/i2c-id.h 2002-07-10 09:28:44.000000000 -0400 @@ -20,7 +20,7 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ /* ------------------------------------------------------------------------- */ -/* $Id: i2c-id.h,v 1.41 2002/03/11 07:18:55 simon Exp $ */ +/* $Id: i2c-id.h,v 1.52 2002/07/10 13:28:44 abz Exp $ */ #ifndef I2C_ID_H #define I2C_ID_H @@ -90,8 +90,12 @@ #define I2C_DRIVERID_DRP3510 43 /* ADR decoder (Astra Radio) */ #define I2C_DRIVERID_SP5055 44 /* Satellite tuner */ #define I2C_DRIVERID_STV0030 45 /* Multipurpose switch */ -#define I2C_DRIVERID_SAA7108 46 /* video decoder, image scaler */ - +#define I2C_DRIVERID_SAA7108 46 /* video decoder, image scaler */ +#define I2C_DRIVERID_DS1307 47 /* DS1307 real time clock */ +#define I2C_DRIVERID_ADV717x 48 /* ADV 7175/7176 video encoder */ +#define I2C_DRIVERID_ZR36067 49 /* Zoran 36067 video encoder */ +#define I2C_DRIVERID_ZR36120 50 /* Zoran 36120 video encoder */ +#define I2C_DRIVERID_24LC32A 51 /* Microchip 24LC32A 32k EEPROM */ @@ -102,6 +106,8 @@ #define I2C_DRIVERID_I2CDEV 900 #define I2C_DRIVERID_I2CPROC 901 +#define I2C_DRIVERID_ARP 902 /* SMBus ARP Client */ +#define I2C_DRIVERID_ALERT 903 /* SMBus Alert Responder Client */ /* IDs -- Use DRIVERIDs 1000-1999 for sensors. These were originally in sensors.h in the lm_sensors package */ @@ -134,6 +140,9 @@ #define I2C_DRIVERID_FSCPOS 1028 #define I2C_DRIVERID_FSCSCY 1029 #define I2C_DRIVERID_PCF8591 1030 +#define I2C_DRIVERID_SMSC47M1 1031 +#define I2C_DRIVERID_VT1211 1032 +#define I2C_DRIVERID_LM92 1033 /* * ---- Adapter types ---------------------------------------------------- @@ -155,6 +164,7 @@ #define I2C_ALGO_EC 0x100000 /* ACPI embedded controller */ #define I2C_ALGO_MPC8XX 0x110000 /* MPC8xx PowerPC I2C algorithm */ +#define I2C_ALGO_OCP 0x120000 /* IBM or otherwise On-chip I2C algorithm */ #define I2C_ALGO_EXP 0x800000 /* experimental */ @@ -182,9 +192,11 @@ #define I2C_HW_B_I810 0x0a /* Intel I810 */ #define I2C_HW_B_VOO 0x0b /* 3dfx Voodoo 3 / Banshee */ #define I2C_HW_B_PPORT 0x0c /* Primitive parallel port adapter */ +#define I2C_HW_B_SAVG 0x0d /* Savage 4 */ #define I2C_HW_B_RIVA 0x10 /* Riva based graphics cards */ #define I2C_HW_B_IOC 0x11 /* IOC bit-wiggling */ #define I2C_HW_B_TSUNA 0x12 /* DEC Tsunami chipset */ +#define I2C_HW_B_FRODO 0x13 /* 2d3D, Inc. SA-1110 Development Board */ /* --- PCF 8584 based algorithms */ #define I2C_HW_P_LP 0x00 /* Parallel port interface */ @@ -200,6 +212,10 @@ /* --- ITE based algorithms */ #define I2C_HW_I_IIC 0x00 /* controller on the ITE */ +/* --- PowerPC on-chip adapters */ +#define I2C_HW_OCP 0x00 /* IBM on-chip I2C adapter */ + + /* --- SMBus only adapters */ #define I2C_HW_SMBUS_PIIX4 0x00 #define I2C_HW_SMBUS_ALI15X3 0x01 --- linux/drivers/i2c/i2c-proc.c.orig 2002-07-05 19:42:28.000000000 -0400 +++ linux/drivers/i2c/i2c-proc.c 2002-04-22 19:21:49.000000000 -0400 @@ -60,6 +68,7 @@ static struct ctl_table_header *i2c_entries[SENSORS_ENTRY_MAX]; static struct i2c_client *i2c_clients[SENSORS_ENTRY_MAX]; +static unsigned short i2c_inodes[SENSORS_ENTRY_MAX]; static ctl_table sysctl_table[] = { {CTL_DEV, "dev", NULL, 0, 0555}, @@ -172,7 +185,7 @@ printk(KERN_ERR "i2c-proc.o: error: sysctl interface not supported by kernel!\n"); kfree(new_table); kfree(name); - return -ENOMEM; + return -EPERM; } i2c_entries[id - 256] = new_header; @@ -188,6 +201,8 @@ return id; } #endif /* DEBUG */ + i2c_inodes[id - 256] = + new_header->ctl_table->child->child->de->low_ino; new_header->ctl_table->child->child->de->owner = controlling_mod; return id; @@ -210,6 +230,49 @@ } } +/* Monitor access for /proc/sys/dev/sensors; make unloading i2c-proc.o + impossible if some process still uses it or some file in it */ +void i2c_fill_inode(struct inode *inode, int fill) +{ + if (fill) + MOD_INC_USE_COUNT; + else + MOD_DEC_USE_COUNT; +} + +/* Monitor access for /proc/sys/dev/sensors/ directories; make unloading + the corresponding module impossible if some process still uses it or + some file in it */ +void i2c_dir_fill_inode(struct inode *inode, int fill) +{ + int i; + struct i2c_client *client; + +#ifdef DEBUG + if (!inode) { + printk(KERN_ERR "i2c-proc.o: Warning: inode NULL in fill_inode()\n"); + return; + } +#endif /* def DEBUG */ + + for (i = 0; i < SENSORS_ENTRY_MAX; i++) + if (i2c_clients[i] + && (i2c_inodes[i] == inode->i_ino)) break; +#ifdef DEBUG + if (i == SENSORS_ENTRY_MAX) { + printk + (KERN_ERR "i2c-proc.o: Warning: inode (%ld) not found in fill_inode()\n", + inode->i_ino); + return; + } +#endif /* def DEBUG */ + client = i2c_clients[i]; + if (fill) + client->driver->inc_use(client); + else + client->driver->dec_use(client); +} + int i2c_proc_chips(ctl_table * ctl, int write, struct file *filp, void *buffer, size_t * lenp) { --- linux/include/linux/i2c.h.orig 2002-07-05 19:42:14.000000000 -0400 +++ linux/include/linux/i2c.h 2002-07-19 16:53:45.000000000 -0400 @@ -23,15 +23,15 @@ /* With some changes from Ky?sti M?lkki and Frodo Looijaard */ -/* $Id: i2c.h,v 1.50 2002/03/23 00:53:38 phil Exp $ */ +/* $Id: i2c.h,v 1.59 2002/07/19 20:53:45 phil Exp $ */ #ifndef I2C_H #define I2C_H -#define I2C_DATE "20020322" -#define I2C_VERSION "2.6.3" +#define I2C_DATE "20020719" +#define I2C_VERSION "2.6.4" -#include /* id values of adapters et. al. */ +#include /* id values of adapters et. al. */ #include @@ -280,6 +283,9 @@ #define I2C_CLIENT_ALLOW_USE 0x01 /* Client allows access */ #define I2C_CLIENT_ALLOW_MULTIPLE_USE 0x02 /* Allow multiple access-locks */ /* on an i2c_client */ +#define I2C_CLIENT_PEC 0x04 /* Use Packet Error Checking */ +#define I2C_CLIENT_TEN 0x10 /* we have a ten bit chip address */ + /* Must equal I2C_M_TEN below */ /* i2c_client_address_data is the struct for holding default client * addresses for a driver and for the parameters supplied on the @@ -395,6 +401,12 @@ #define I2C_FUNC_I2C 0x00000001 #define I2C_FUNC_10BIT_ADDR 0x00000002 #define I2C_FUNC_PROTOCOL_MANGLING 0x00000004 /* I2C_M_{REV_DIR_ADDR,NOSTART} */ +#define I2C_FUNC_SMBUS_HWPEC_CALC 0x00000008 /* SMBus 2.0 */ +#define I2C_FUNC_SMBUS_READ_WORD_DATA_PEC 0x00000800 /* SMBus 2.0 */ +#define I2C_FUNC_SMBUS_WRITE_WORD_DATA_PEC 0x00001000 /* SMBus 2.0 */ +#define I2C_FUNC_SMBUS_PROC_CALL_PEC 0x00002000 /* SMBus 2.0 */ +#define I2C_FUNC_SMBUS_BLOCK_PROC_CALL_PEC 0x00004000 /* SMBus 2.0 */ +#define I2C_FUNC_SMBUS_BLOCK_PROC_CALL 0x00008000 /* SMBus 2.0 */ #define I2C_FUNC_SMBUS_QUICK 0x00010000 #define I2C_FUNC_SMBUS_READ_BYTE 0x00020000 #define I2C_FUNC_SMBUS_WRITE_BYTE 0x00040000 @@ -409,6 +421,8 @@ #define I2C_FUNC_SMBUS_WRITE_I2C_BLOCK 0x08000000 /* w/ 1-byte reg. addr. */ #define I2C_FUNC_SMBUS_READ_I2C_BLOCK_2 0x10000000 /* I2C-like block xfer */ #define I2C_FUNC_SMBUS_WRITE_I2C_BLOCK_2 0x20000000 /* w/ 2-byte reg. addr. */ +#define I2C_FUNC_SMBUS_READ_BLOCK_DATA_PEC 0x40000000 /* SMBus 2.0 */ +#define I2C_FUNC_SMBUS_WRITE_BLOCK_DATA_PEC 0x80000000 /* SMBus 2.0 */ #define I2C_FUNC_SMBUS_BYTE I2C_FUNC_SMBUS_READ_BYTE | \ I2C_FUNC_SMBUS_WRITE_BYTE @@ -422,6 +436,17 @@ I2C_FUNC_SMBUS_WRITE_I2C_BLOCK #define I2C_FUNC_SMBUS_I2C_BLOCK_2 I2C_FUNC_SMBUS_READ_I2C_BLOCK_2 | \ I2C_FUNC_SMBUS_WRITE_I2C_BLOCK_2 +#define I2C_FUNC_SMBUS_BLOCK_DATA_PEC I2C_FUNC_SMBUS_READ_BLOCK_DATA_PEC | \ + I2C_FUNC_SMBUS_WRITE_BLOCK_DATA_PEC +#define I2C_FUNC_SMBUS_WORD_DATA_PEC I2C_FUNC_SMBUS_READ_WORD_DATA_PEC | \ + I2C_FUNC_SMBUS_WRITE_WORD_DATA_PEC + +#define I2C_FUNC_SMBUS_READ_BYTE_PEC I2C_FUNC_SMBUS_READ_BYTE_DATA +#define I2C_FUNC_SMBUS_WRITE_BYTE_PEC I2C_FUNC_SMBUS_WRITE_BYTE_DATA +#define I2C_FUNC_SMBUS_READ_BYTE_DATA_PEC I2C_FUNC_SMBUS_READ_WORD_DATA +#define I2C_FUNC_SMBUS_WRITE_BYTE_DATA_PEC I2C_FUNC_SMBUS_WRITE_WORD_DATA +#define I2C_FUNC_SMBUS_BYTE_PEC I2C_FUNC_SMBUS_BYTE_DATA +#define I2C_FUNC_SMBUS_BYTE_DATA_PEC I2C_FUNC_SMBUS_WORD_DATA #define I2C_FUNC_SMBUS_EMUL I2C_FUNC_SMBUS_QUICK | \ I2C_FUNC_SMBUS_BYTE | \ @@ -429,16 +454,20 @@ I2C_FUNC_SMBUS_WORD_DATA | \ I2C_FUNC_SMBUS_PROC_CALL | \ I2C_FUNC_SMBUS_WRITE_BLOCK_DATA | \ - I2C_FUNC_SMBUS_I2C_BLOCK | \ - I2C_FUNC_SMBUS_I2C_BLOCK_2 + I2C_FUNC_SMBUS_WRITE_BLOCK_DATA_PEC | \ + I2C_FUNC_SMBUS_I2C_BLOCK /* * Data for SMBus Messages */ +#define I2C_SMBUS_BLOCK_MAX 32 /* As specified in SMBus standard */ +#define I2C_SMBUS_I2C_BLOCK_MAX 32 /* Not specified but we use same structure */ union i2c_smbus_data { __u8 byte; __u16 word; - __u8 block[33]; /* block[0] is used for length */ + __u8 block[I2C_SMBUS_BLOCK_MAX + 3]; /* block[0] is used for length */ + /* one more for read length in block process call */ + /* and one more for PEC */ }; /* smbus_access read or write markers */ @@ -454,6 +483,11 @@ #define I2C_SMBUS_PROC_CALL 4 #define I2C_SMBUS_BLOCK_DATA 5 #define I2C_SMBUS_I2C_BLOCK_DATA 6 +#define I2C_SMBUS_BLOCK_PROC_CALL 7 /* SMBus 2.0 */ +#define I2C_SMBUS_BLOCK_DATA_PEC 8 /* SMBus 2.0 */ +#define I2C_SMBUS_PROC_CALL_PEC 9 /* SMBus 2.0 */ +#define I2C_SMBUS_BLOCK_PROC_CALL_PEC 10 /* SMBus 2.0 */ +#define I2C_SMBUS_WORD_DATA_PEC 11 /* SMBus 2.0 */ /* ----- commands for the ioctl like i2c_command call: @@ -479,6 +513,7 @@ #define I2C_FUNCS 0x0705 /* Get the adapter functionality */ #define I2C_RDWR 0x0707 /* Combined R/W transfer (one stop only)*/ +#define I2C_PEC 0x0708 /* != 0 for SMBus PEC */ #if 0 #define I2C_ACK_TEST 0x0710 /* See if a slave is at a specific address */ #endif -- Albert Cranford Deerfield Beach FL USA ac9410@bellsouth.net - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/