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Subject[patch 2/5] 2.4.20-pre5 i2c updates
Hello Marcelo,
Attached are i2c patches that bring the kernel to the latest released and tested
version. Updates include:
o Support for SMBus 2.0 PEC Packet Error Checking
o New algorithm-i2c-algo-8xxx for MPC8XXX
o New algorithm-i2c-algo-ibm_ocp for IBM PPC 405
o New adapter-i2c-adap-ibm_ocp for IBM PPC 405
o New adapter-i2c-frodo for SA 1110 board
o New adapter-i2c-pcf-epp for PCF8584
o New adapter-i2c-pport for parallel port
o New adapter-i2c-rpx for embeded MPC8XX
o Updated documentation
Thanks,
Albert
--
ac9410@attbi.com

--
ac9410@attbi.com
--- linux/drivers/i2c/i2c-core.c.orig 2002-07-23 01:43:58.000000000 -0400
+++ linux/drivers/i2c/i2c-core.c 2002-08-27 01:45:22.000000000 -0400
@@ -18,9 +18,10 @@
/* ------------------------------------------------------------------------- */

/* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi>.
- All SMBus-related things are written by Frodo Looijaard <frodol@dds.nl> */
+ All SMBus-related things are written by Frodo Looijaard <frodol@dds.nl>
+ SMBus 2.0 support by Mark Studebaker <mdsxyz123@yahoo.com> */

-/* $Id: i2c-core.c,v 1.64 2001/08/13 01:35:56 mds Exp $ */
+/* $Id: i2c-core.c,v 1.83 2002/07/08 01:37:15 mds Exp $ */

#include <linux/module.h>
#include <linux/kernel.h>
@@ -28,7 +29,6 @@
#include <linux/slab.h>
#include <linux/proc_fs.h>
#include <linux/config.h>
-
#include <linux/i2c.h>

/* ----- compatibility stuff ----------------------------------------------- */
@@ -36,10 +36,6 @@
#include <linux/version.h>
#include <linux/init.h>

-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,3,1)
-#define init_MUTEX(s) do { *(s) = MUTEX; } while(0)
-#endif
-
#include <asm/uaccess.h>

/* ----- global defines ---------------------------------------------------- */
@@ -84,10 +80,6 @@
static int i2cproc_init(void);
static int i2cproc_cleanup(void);

-#if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,3,27))
-static void monitor_bus_i2c(struct inode *inode, int fill);
-#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,58)) */
-
static ssize_t i2cproc_bus_read(struct file * file, char * buf,size_t count,
loff_t *ppos);
static int read_bus_i2c(char *buf, char **start, off_t offset, int len,
@@ -99,12 +91,6 @@
read: i2cproc_bus_read,
};

-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,3,48))
-static struct inode_operations i2cproc_inode_operations = {
- &i2cproc_operations
-};
-#endif
-
static int i2cproc_initialized = 0;

#else /* undef CONFIG_PROC_FS */
@@ -158,22 +144,14 @@

proc_entry = create_proc_entry(name,0,proc_bus);
if (! proc_entry) {
- printk("i2c-core.o: Could not create /proc/bus/%s\n",
+ printk(KERN_ERR "i2c-core.o: Could not create /proc/bus/%s\n",
name);
res = -ENOENT;
goto ERROR1;
}

-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,48))
proc_entry->proc_fops = &i2cproc_operations;
-#else
- proc_entry->ops = &i2cproc_inode_operations;
-#endif
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,27))
proc_entry->owner = THIS_MODULE;
-#else
- proc_entry->fill_inode = &monitor_bus_i2c;
-#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,58)) */
adap->inode = proc_entry->low_ino;
}

@@ -188,7 +166,7 @@
drivers[j]->attach_adapter(adap);
DRV_UNLOCK();

- DEB(printk("i2c-core.o: adapter %s registered as adapter %d.\n",
+ DEB(printk(KERN_DEBUG "i2c-core.o: adapter %s registered as adapter %d.\n",
adap->name,i));

return 0;
@@ -214,7 +192,7 @@
if (adap == adapters[i])
break;
if (I2C_ADAP_MAX == i) {
- printk( "i2c-core.o: unregister_adapter adap [%s] not found.\n",
+ printk( KERN_WARNING "i2c-core.o: unregister_adapter adap [%s] not found.\n",
adap->name);
res = -ENODEV;
goto ERROR0;
@@ -229,7 +207,7 @@
for (j = 0; j < I2C_DRIVER_MAX; j++)
if (drivers[j] && (drivers[j]->flags & I2C_DF_DUMMY))
if ((res = drivers[j]->attach_adapter(adap))) {
- printk("i2c-core.o: can't detach adapter %s "
+ printk(KERN_WARNING "i2c-core.o: can't detach adapter %s "
"while detaching driver %s: driver not "
"detached!",adap->name,drivers[j]->name);
goto ERROR1;
@@ -247,7 +225,7 @@
* must be deleted, as this would cause invalid states.
*/
if ((res=client->driver->detach_client(client))) {
- printk("i2c-core.o: adapter %s not "
+ printk(KERN_ERR "i2c-core.o: adapter %s not "
"unregistered, because client at "
"address %02x can't be detached. ",
adap->name, client->addr);
@@ -266,7 +244,7 @@
adap_count--;

ADAP_UNLOCK();
- DEB(printk("i2c-core.o: adapter unregistered: %s\n",adap->name));
+ DEB(printk(KERN_DEBUG "i2c-core.o: adapter unregistered: %s\n",adap->name));
return 0;

ERROR0:
@@ -305,7 +283,7 @@

DRV_UNLOCK(); /* driver was successfully added */

- DEB(printk("i2c-core.o: driver %s registered.\n",driver->name));
+ DEB(printk(KERN_DEBUG "i2c-core.o: driver %s registered.\n",driver->name));

ADAP_LOCK();

@@ -340,7 +318,7 @@
* attached. If so, detach them to be able to kill the driver
* afterwards.
*/
- DEB2(printk("i2c-core.o: unregister_driver - looking for clients.\n"));
+ DEB2(printk(KERN_DEBUG "i2c-core.o: unregister_driver - looking for clients.\n"));
/* removing clients does not depend on the notify flag, else
* invalid operation might (will!) result, when using stale client
* pointers.
@@ -350,7 +328,7 @@
struct i2c_adapter *adap = adapters[k];
if (adap == NULL) /* skip empty entries. */
continue;
- DEB2(printk("i2c-core.o: examining adapter %s:\n",
+ DEB2(printk(KERN_DEBUG "i2c-core.o: examining adapter %s:\n",
adap->name));
if (driver->flags & I2C_DF_DUMMY) {
/* DUMMY drivers do not register their clients, so we have to
@@ -359,7 +337,7 @@
* this or hell will break loose...
*/
if ((res = driver->attach_adapter(adap))) {
- printk("i2c-core.o: while unregistering "
+ printk(KERN_WARNING "i2c-core.o: while unregistering "
"dummy driver %s, adapter %s could "
"not be detached properly; driver "
"not unloaded!",driver->name,
@@ -372,19 +350,17 @@
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->
detach_client(client)))
{
- printk("i2c-core.o: while "
+ printk(KERN_ERR "i2c-core.o: while "
"unregistering driver "
"`%s', the client at "
- "address %02x of "
- "adapter `%s' could not"
- "be detached; driver"
- "not unloaded!",
+ "address %02x of adapter `%s' could not be "
+ "detached; driver not unloaded!",
driver->name,
client->addr,
adap->name);
@@ -400,7 +376,7 @@
driver_count--;
DRV_UNLOCK();

- DEB(printk("i2c-core.o: driver unregistered: %s\n",driver->name));
+ DEB(printk(KERN_DEBUG "i2c-core.o: driver unregistered: %s\n",driver->name));
return 0;
}

@@ -436,10 +412,10 @@

if (adapter->client_register)
if (adapter->client_register(client))
- printk("i2c-core.o: warning: client_register seems "
+ printk(KERN_DEBUG "i2c-core.o: warning: client_register seems "
"to have failed for client %02x at adapter %s\n",
client->addr,adapter->name);
- DEB(printk("i2c-core.o: client [%s] registered to adapter [%s](pos. %d).\n",
+ DEB(printk(KERN_DEBUG "i2c-core.o: client [%s] registered to adapter [%s](pos. %d).\n",
client->name, adapter->name,i));

if(client->flags & I2C_CLIENT_ALLOW_USE)
@@ -470,7 +446,7 @@

if (adapter->client_unregister != NULL)
if ((res = adapter->client_unregister(client))) {
- printk("i2c-core.o: client_unregister [%s] failed, "
+ printk(KERN_ERR "i2c-core.o: client_unregister [%s] failed, "
"client not detached",client->name);
return res;
}
@@ -478,7 +454,7 @@
adapter->clients[i] = NULL;
adapter->client_count--;

- DEB(printk("i2c-core.o: client [%s] unregistered.\n",client->name));
+ DEB(printk(KERN_DEBUG "i2c-core.o: client [%s] unregistered.\n",client->name));
return 0;
}

@@ -611,18 +587,6 @@

#ifdef CONFIG_PROC_FS

-#if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,3,27))
-/* Monitor access to /proc/bus/i2c*; make unloading i2c-proc impossible
- if some process still uses it or some file in it */
-void monitor_bus_i2c(struct inode *inode, int fill)
-{
- if (fill)
- MOD_INC_USE_COUNT;
- else
- MOD_DEC_USE_COUNT;
-}
-#endif /* (LINUX_VERSION_CODE <= KERNEL_VERSION(2,3,37)) */
-
/* This function generates the output for /proc/bus/i2c */
int read_bus_i2c(char *buf, char **start, off_t offset, int len, int *eof,
void *private)
@@ -659,12 +623,12 @@
int i,j,k,order_nr,len=0,len_total;
int order[I2C_CLIENT_MAX];

- if (count > 4000)
+ if (count > 4096)
return -EINVAL;
len_total = file->f_pos + count;
/* Too bad if this gets longer (unlikely) */
- if (len_total > 4000)
- len_total = 4000;
+ if (len_total > 4096)
+ len_total = 4096;
for (i = 0; i < I2C_ADAP_MAX; i++)
if (adapters[i]->inode == inode->i_ino) {
/* We need a bit of slack in the kernel buffer; this makes the
@@ -720,22 +684,18 @@
i2cproc_initialized = 0;

if (! proc_bus) {
- printk("i2c-core.o: /proc/bus/ does not exist");
+ printk(KERN_ERR "i2c-core.o: /proc/bus/ does not exist");
i2cproc_cleanup();
return -ENOENT;
}
proc_bus_i2c = create_proc_entry("i2c",0,proc_bus);
if (!proc_bus_i2c) {
- printk("i2c-core.o: Could not create /proc/bus/i2c");
+ printk(KERN_ERR "i2c-core.o: Could not create /proc/bus/i2c");
i2cproc_cleanup();
return -ENOENT;
}
proc_bus_i2c->read_proc = &read_bus_i2c;
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,27))
proc_bus_i2c->owner = THIS_MODULE;
-#else
- proc_bus_i2c->fill_inode = &monitor_bus_i2c;
-#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,27)) */
i2cproc_initialized += 2;
return 0;
}
@@ -765,7 +725,7 @@
conditional_schedule();

if (adap->algo->master_xfer) {
- DEB2(printk("i2c-core.o: master_xfer: %s with %d msgs.\n",
+ DEB2(printk(KERN_DEBUG "i2c-core.o: master_xfer: %s with %d msgs.\n",
adap->name,num));

I2C_LOCK(adap);
@@ -774,7 +734,7 @@

return ret;
} else {
- printk("i2c-core.o: I2C adapter %04x: I2C level transfers not supported\n",
+ printk(KERN_ERR "i2c-core.o: I2C adapter %04x: I2C level transfers not supported\n",
adap->id);
return -ENOSYS;
}
@@ -794,7 +754,7 @@
msg.len = count;
(const char *)msg.buf = buf;

- DEB2(printk("i2c-core.o: master_send: writing %d bytes on %s.\n",
+ DEB2(printk(KERN_DEBUG "i2c-core.o: master_send: writing %d bytes on %s.\n",
count,client->adapter->name));

I2C_LOCK(adap);
@@ -806,7 +766,7 @@
*/
return (ret == 1 )? count : ret;
} else {
- printk("i2c-core.o: I2C adapter %04x: I2C level transfers not supported\n",
+ printk(KERN_ERR "i2c-core.o: I2C adapter %04x: I2C level transfers not supported\n",
client->adapter->id);
return -ENOSYS;
}
@@ -827,14 +787,14 @@
msg.len = count;
msg.buf = buf;

- DEB2(printk("i2c-core.o: master_recv: reading %d bytes on %s.\n",
+ DEB2(printk(KERN_DEBUG "i2c-core.o: master_recv: reading %d bytes on %s.\n",
count,client->adapter->name));

I2C_LOCK(adap);
ret = adap->algo->master_xfer(adap,&msg,1);
I2C_UNLOCK(adap);

- DEB2(printk("i2c-core.o: master_recv: return:%d (count:%d, addr:0x%02x)\n",
+ DEB2(printk(KERN_DEBUG "i2c-core.o: master_recv: return:%d (count:%d, addr:0x%02x)\n",
ret, count, client->addr));

/* if everything went ok (i.e. 1 msg transmitted), return #bytes
@@ -842,7 +802,7 @@
*/
return (ret == 1 )? count : ret;
} else {
- printk("i2c-core.o: I2C adapter %04x: I2C level transfers not supported\n",
+ printk(KERN_DEBUG "i2c-core.o: I2C adapter %04x: I2C level transfers not supported\n",
client->adapter->id);
return -ENOSYS;
}
@@ -855,7 +815,7 @@
int ret = 0;
struct i2c_adapter *adap = client->adapter;

- DEB2(printk("i2c-core.o: i2c ioctl, cmd: 0x%x, arg: %#lx\n", cmd, arg));
+ DEB2(printk(KERN_DEBUG "i2c-core.o: i2c ioctl, cmd: 0x%x, arg: %#lx\n", cmd, arg));
switch ( cmd ) {
case I2C_RETRIES:
adap->retries = arg;
@@ -900,7 +860,7 @@
if (((adap_id == address_data->force[i]) ||
(address_data->force[i] == ANY_I2C_BUS)) &&
(addr == address_data->force[i+1])) {
- DEB2(printk("i2c-core.o: found force parameter for adapter %d, addr %04x\n",
+ DEB2(printk(KERN_DEBUG "i2c-core.o: found force parameter for adapter %d, addr %04x\n",
adap_id,addr));
if ((err = found_proc(adapter,addr,0,0)))
return err;
@@ -918,7 +878,7 @@
if (((adap_id == address_data->ignore[i]) ||
((address_data->ignore[i] == ANY_I2C_BUS))) &&
(addr == address_data->ignore[i+1])) {
- DEB2(printk("i2c-core.o: found ignore parameter for adapter %d, "
+ DEB2(printk(KERN_DEBUG "i2c-core.o: found ignore parameter for adapter %d, "
"addr %04x\n", adap_id ,addr));
found = 1;
}
@@ -930,7 +890,7 @@
((address_data->ignore_range[i]==ANY_I2C_BUS))) &&
(addr >= address_data->ignore_range[i+1]) &&
(addr <= address_data->ignore_range[i+2])) {
- DEB2(printk("i2c-core.o: found ignore_range parameter for adapter %d, "
+ DEB2(printk(KERN_DEBUG "i2c-core.o: found ignore_range parameter for adapter %d, "
"addr %04x\n", adap_id,addr));
found = 1;
}
@@ -945,7 +905,7 @@
i += 1) {
if (addr == address_data->normal_i2c[i]) {
found = 1;
- DEB2(printk("i2c-core.o: found normal i2c entry for adapter %d, "
+ DEB2(printk(KERN_DEBUG "i2c-core.o: found normal i2c entry for adapter %d, "
"addr %02x", adap_id,addr));
}
}
@@ -956,7 +916,7 @@
if ((addr >= address_data->normal_i2c_range[i]) &&
(addr <= address_data->normal_i2c_range[i+1])) {
found = 1;
- DEB2(printk("i2c-core.o: found normal i2c_range entry for adapter %d, "
+ DEB2(printk(KERN_DEBUG "i2c-core.o: found normal i2c_range entry for adapter %d, "
"addr %04x\n", adap_id,addr));
}
}
@@ -968,7 +928,7 @@
((address_data->probe[i] == ANY_I2C_BUS))) &&
(addr == address_data->probe[i+1])) {
found = 1;
- DEB2(printk("i2c-core.o: found probe parameter for adapter %d, "
+ DEB2(printk(KERN_DEBUG "i2c-core.o: found probe parameter for adapter %d, "
"addr %04x\n", adap_id,addr));
}
}
@@ -980,7 +940,7 @@
(addr >= address_data->probe_range[i+1]) &&
(addr <= address_data->probe_range[i+2])) {
found = 1;
- DEB2(printk("i2c-core.o: found probe_range parameter for adapter %d, "
+ DEB2(printk(KERN_DEBUG "i2c-core.o: found probe_range parameter for adapter %d, "
"addr %04x\n", adap_id,addr));
}
}
@@ -1010,6 +970,123 @@

/* 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,
@@ -1028,8 +1105,9 @@

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)
@@ -1107,8 +1185,8 @@
{
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;
@@ -1117,13 +1195,50 @@
I2C_SMBUS_BLOCK_DATA,&data);
}

+/* 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)
+{
+ union i2c_smbus_data data;
+ int i;
+ if (i2c_smbus_xfer(client->adapter,client->addr,client->flags,
+ I2C_SMBUS_READ,command,
+ I2C_SMBUS_I2C_BLOCK_DATA,&data))
+ return -1;
+ else {
+ for (i = 1; i <= data.block[0]; i++)
+ values[i-1] = data.block[i];
+ return data.block[0];
+ }
+}
+
extern s32 i2c_smbus_write_i2c_block_data(struct i2c_client * client,
u8 command, u8 length, u8 *values)
{
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;
@@ -1185,30 +1300,54 @@
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("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) {
- printk("i2c-core.o: smbus_access called with "
+ 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",
- msg[0].len);
+ 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 = I2C_SMBUS_I2C_BLOCK_MAX;
+ } else {
+ msg[0].len = data->block[0] + 2;
+ 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]);
+ return -1;
+ }
+ for (i = 0; i < data->block[0]; i++)
+ msgbuf0[i] = data->block[i+1];
+ }
+ break;
default:
- printk("i2c-core.o: smbus_access called with invalid size (%d)\n",
+ printk(KERN_ERR "i2c-core.o: smbus_access called with invalid size (%d)\n",
size);
return -1;
}
@@ -1228,6 +1367,12 @@
case I2C_SMBUS_PROC_CALL:
data->word = msgbuf1[0] | (msgbuf1[1] << 8);
break;
+ case I2C_SMBUS_I2C_BLOCK_DATA:
+ /* fixed at 32 for now */
+ 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;
}
return 0;
}
@@ -1238,7 +1383,29 @@
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,
@@ -1247,6 +1414,14 @@
} 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;
}

@@ -1270,7 +1445,7 @@

static int __init i2c_init(void)
{
- printk("i2c-core.o: i2c core module\n");
+ printk(KERN_INFO "i2c-core.o: i2c core module version %s (%s)\n", I2C_VERSION, I2C_DATE);
memset(adapters,0,sizeof(adapters));
memset(drivers,0,sizeof(drivers));
adap_count=0;
@@ -1408,6 +1583,8 @@
EXPORT_SYMBOL(i2c_smbus_process_call);
EXPORT_SYMBOL(i2c_smbus_read_block_data);
EXPORT_SYMBOL(i2c_smbus_write_block_data);
+EXPORT_SYMBOL(i2c_smbus_read_i2c_block_data);
+EXPORT_SYMBOL(i2c_smbus_write_i2c_block_data);

EXPORT_SYMBOL(i2c_get_functionality);
EXPORT_SYMBOL(i2c_check_functionality);
--- linux/drivers/i2c/i2c-dev.c.orig 2001-10-11 11:05:47.000000000 -0400
+++ linux/drivers/i2c/i2c-dev.c 2002-07-23 09:01:28.000000000 -0400
@@ -28,7 +28,7 @@
/* The devfs code is contributed by Philipp Matthias Hahn
<pmhahn@titan.lahn.de> */

-/* $Id: i2c-dev.c,v 1.40 2001/08/25 01:28:01 mds Exp $ */
+/* $Id: i2c-dev.c,v 1.46 2002/07/06 02:07:39 mds Exp $ */

#include <linux/config.h>
#include <linux/kernel.h>
@@ -36,9 +36,7 @@
#include <linux/fs.h>
#include <linux/slab.h>
#include <linux/version.h>
-#if LINUX_KERNEL_VERSION >= KERNEL_VERSION(2,4,0)
#include <linux/smp_lock.h>
-#endif /* LINUX_KERNEL_VERSION >= KERNEL_VERSION(2,4,0) */
#ifdef CONFIG_DEVFS_FS
#include <linux/devfs_fs_kernel.h>
#endif
@@ -49,7 +47,6 @@

#include <linux/init.h>
#include <asm/uaccess.h>
-
#include <linux/i2c.h>
#include <linux/i2c-dev.h>

@@ -60,9 +57,6 @@

/* struct file_operations changed too often in the 2.1 series for nice code */

-#if LINUX_KERNEL_VERSION < KERNEL_VERSION(2,4,9)
-static loff_t i2cdev_lseek (struct file *file, loff_t offset, int origin);
-#endif
static ssize_t i2cdev_read (struct file *file, char *buf, size_t count,
loff_t *offset);
static ssize_t i2cdev_write (struct file *file, const char *buf, size_t count,
@@ -88,14 +82,8 @@
static int i2cdev_cleanup(void);

static struct file_operations i2cdev_fops = {
-#if LINUX_KERNEL_VERSION >= KERNEL_VERSION(2,4,0)
owner: THIS_MODULE,
-#endif /* LINUX_KERNEL_VERSION >= KERNEL_VERSION(2,4,0) */
-#if LINUX_KERNEL_VERSION < KERNEL_VERSION(2,4,9)
- llseek: i2cdev_lseek,
-#else
llseek: no_llseek,
-#endif
read: i2cdev_read,
write: i2cdev_write,
ioctl: i2cdev_ioctl,
@@ -133,20 +121,6 @@

static int i2cdev_initialized;

-#if LINUX_KERNEL_VERSION < KERNEL_VERSION(2,4,9)
-/* Note that the lseek function is called llseek in 2.1 kernels. But things
- are complicated enough as is. */
-loff_t i2cdev_lseek (struct file *file, loff_t offset, int origin)
-{
-#ifdef DEBUG
- struct inode *inode = file->f_dentry->d_inode;
- printk("i2c-dev.o: i2c-%d lseek to %ld bytes relative to %d.\n",
- MINOR(inode->i_rdev),(long) offset,origin);
-#endif /* DEBUG */
- return -ESPIPE;
-}
-#endif
-
static ssize_t i2cdev_read (struct file *file, char *buf, size_t count,
loff_t *offset)
{
@@ -165,7 +139,7 @@
return -ENOMEM;

#ifdef DEBUG
- printk("i2c-dev.o: i2c-%d reading %d bytes.\n",MINOR(inode->i_rdev),
+ printk(KERN_DEBUG "i2c-dev.o: i2c-%d reading %d bytes.\n",MINOR(inode->i_rdev),
count);
#endif

@@ -197,7 +171,7 @@
}

#ifdef DEBUG
- printk("i2c-dev.o: i2c-%d writing %d bytes.\n",MINOR(inode->i_rdev),
+ printk(KERN_DEBUG "i2c-dev.o: i2c-%d writing %d bytes.\n",MINOR(inode->i_rdev),
count);
#endif
ret = i2c_master_send(client,tmp,count);
@@ -217,7 +191,7 @@
unsigned long funcs;

#ifdef DEBUG
- printk("i2c-dev.o: i2c-%d ioctl, cmd: 0x%x, arg: %lx.\n",
+ printk(KERN_DEBUG "i2c-dev.o: i2c-%d ioctl, cmd: 0x%x, arg: %lx.\n",
MINOR(inode->i_rdev),cmd, arg);
#endif /* DEBUG */

@@ -237,6 +211,12 @@
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,
@@ -313,9 +293,10 @@
(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("i2c-dev.o: size out of range (%x) in ioctl I2C_SMBUS.\n",
+ printk(KERN_DEBUG "i2c-dev.o: size out of range (%x) in ioctl I2C_SMBUS.\n",
data_arg.size);
#endif
return -EINVAL;
@@ -325,7 +306,7 @@
if ((data_arg.read_write != I2C_SMBUS_READ) &&
(data_arg.read_write != I2C_SMBUS_WRITE)) {
#ifdef DEBUG
- printk("i2c-dev.o: read_write out of range (%x) in ioctl I2C_SMBUS.\n",
+ printk(KERN_DEBUG "i2c-dev.o: read_write out of range (%x) in ioctl I2C_SMBUS.\n",
data_arg.read_write);
#endif
return -EINVAL;
@@ -345,7 +326,7 @@

if (data_arg.data == NULL) {
#ifdef DEBUG
- printk("i2c-dev.o: data is NULL pointer in ioctl I2C_SMBUS.\n");
+ printk(KERN_DEBUG "i2c-dev.o: data is NULL pointer in ioctl I2C_SMBUS.\n");
#endif
return -EINVAL;
}
@@ -356,10 +337,11 @@
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;
@@ -368,6 +350,7 @@
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;
@@ -387,7 +370,7 @@

if ((minor >= I2CDEV_ADAPS_MAX) || ! (i2cdev_adaps[minor])) {
#ifdef DEBUG
- printk("i2c-dev.o: Trying to open unattached adapter i2c-%d\n",
+ printk(KERN_DEBUG "i2c-dev.o: Trying to open unattached adapter i2c-%d\n",
minor);
#endif
return -ENODEV;
@@ -403,12 +386,8 @@

if (i2cdev_adaps[minor]->inc_use)
i2cdev_adaps[minor]->inc_use(i2cdev_adaps[minor]);
-#if LINUX_KERNEL_VERSION < KERNEL_VERSION(2,4,0)
- MOD_INC_USE_COUNT;
-#endif /* LINUX_KERNEL_VERSION < KERNEL_VERSION(2,4,0) */
-
#ifdef DEBUG
- printk("i2c-dev.o: opened i2c-%d\n",minor);
+ printk(KERN_DEBUG "i2c-dev.o: opened i2c-%d\n",minor);
#endif
return 0;
}
@@ -419,18 +398,12 @@
kfree(file->private_data);
file->private_data=NULL;
#ifdef DEBUG
- printk("i2c-dev.o: Closed: i2c-%d\n", minor);
+ printk(KERN_DEBUG "i2c-dev.o: Closed: i2c-%d\n", minor);
#endif
-#if LINUX_KERNEL_VERSION < KERNEL_VERSION(2,4,0)
- MOD_DEC_USE_COUNT;
-#else /* LINUX_KERNEL_VERSION >= KERNEL_VERSION(2,4,0) */
lock_kernel();
-#endif /* LINUX_KERNEL_VERSION < KERNEL_VERSION(2,4,0) */
if (i2cdev_adaps[minor]->dec_use)
i2cdev_adaps[minor]->dec_use(i2cdev_adaps[minor]);
-#if LINUX_KERNEL_VERSION >= KERNEL_VERSION(2,4,0)
unlock_kernel();
-#endif /* LINUX_KERNEL_VERSION >= KERNEL_VERSION(2,4,0) */
return 0;
}

@@ -440,11 +413,11 @@
char name[8];

if ((i = i2c_adapter_id(adap)) < 0) {
- printk("i2c-dev.o: Unknown adapter ?!?\n");
+ printk(KERN_DEBUG "i2c-dev.o: Unknown adapter ?!?\n");
return -ENODEV;
}
if (i >= I2CDEV_ADAPS_MAX) {
- printk("i2c-dev.o: Adapter number too large?!? (%d)\n",i);
+ printk(KERN_DEBUG "i2c-dev.o: Adapter number too large?!? (%d)\n",i);
return -ENODEV;
}

@@ -457,7 +430,7 @@
S_IFCHR | S_IRUSR | S_IWUSR,
&i2cdev_fops, NULL);
#endif
- printk("i2c-dev.o: Registered '%s' as minor %d\n",adap->name,i);
+ printk(KERN_DEBUG "i2c-dev.o: Registered '%s' as minor %d\n",adap->name,i);
} else {
/* This is actually a detach_adapter call! */
#ifdef CONFIG_DEVFS_FS
@@ -465,7 +438,7 @@
#endif
i2cdev_adaps[i] = NULL;
#ifdef DEBUG
- printk("i2c-dev.o: Adapter unregistered: %s\n",adap->name);
+ printk(KERN_DEBUG "i2c-dev.o: Adapter unregistered: %s\n",adap->name);
#endif
}

@@ -487,7 +460,7 @@
{
int res;

- printk("i2c-dev.o: i2c /dev entries driver module\n");
+ printk(KERN_INFO "i2c-dev.o: i2c /dev entries driver module version %s (%s)\n", I2C_VERSION, I2C_DATE);

i2cdev_initialized = 0;
#ifdef CONFIG_DEVFS_FS
@@ -495,7 +468,7 @@
#else
if (register_chrdev(I2C_MAJOR,"i2c",&i2cdev_fops)) {
#endif
- printk("i2c-dev.o: unable to get major %d for i2c bus\n",
+ printk(KERN_ERR "i2c-dev.o: unable to get major %d for i2c bus\n",
I2C_MAJOR);
return -EIO;
}
@@ -505,7 +478,7 @@
i2cdev_initialized ++;

if ((res = i2c_add_driver(&i2cdev_driver))) {
- printk("i2c-dev.o: Driver registration failed, module not inserted.\n");
+ printk(KERN_ERR "i2c-dev.o: Driver registration failed, module not inserted.\n");
i2cdev_cleanup();
return res;
}
@@ -519,7 +492,7 @@

if (i2cdev_initialized >= 2) {
if ((res = i2c_del_driver(&i2cdev_driver))) {
- printk("i2c-dev.o: Driver deregistration failed, "
+ printk(KERN_ERR "i2c-dev.o: Driver deregistration failed, "
"module not removed.\n");
return res;
}
@@ -533,7 +506,7 @@
#else
if ((res = unregister_chrdev(I2C_MAJOR,"i2c"))) {
#endif
- printk("i2c-dev.o: unable to release major %d for i2c bus\n",
+ printk(KERN_ERR "i2c-dev.o: unable to release major %d for i2c bus\n",
I2C_MAJOR);
return res;
}
--- linux/include/linux/i2c-dev.h.orig 2001-10-11 11:05:47.000000000 -0400
+++ linux/include/linux/i2c-dev.h 2002-07-23 01:54:44.000000000 -0400
@@ -19,7 +19,7 @@
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

-/* $Id: i2c-dev.h,v 1.9 2001/08/15 03:04:58 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];
}
}

@@ -162,6 +162,22 @@
I2C_SMBUS_BLOCK_DATA, &data);
}

+/* Returns the number of read bytes */
+static inline __s32 i2c_smbus_read_i2c_block_data(int file, __u8 command,
+ __u8 *values)
+{
+ union i2c_smbus_data data;
+ int i;
+ if (i2c_smbus_access(file,I2C_SMBUS_READ,command,
+ I2C_SMBUS_I2C_BLOCK_DATA,&data))
+ return -1;
+ else {
+ for (i = 1; i <= data.block[0]; i++)
+ values[i-1] = data.block[i];
+ return data.block[0];
+ }
+}
+
static inline __s32 i2c_smbus_write_i2c_block_data(int file, __u8 command,
__u8 length, __u8 *values)
{
@@ -176,6 +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 2001-10-11 11:05:47.000000000 -0400
+++ linux/include/linux/i2c-id.h 2002-07-23 01:45:21.000000000 -0400
@@ -20,7 +20,7 @@
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
/* ------------------------------------------------------------------------- */

-/* $Id: i2c-id.h,v 1.35 2001/08/12 17:22:20 mds Exp $ */
+/* $Id: i2c-id.h,v 1.52 2002/07/10 13:28:44 abz Exp $ */

#ifndef I2C_ID_H
#define I2C_ID_H
@@ -90,6 +90,14 @@
#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_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 */
+
+

#define I2C_DRIVERID_EXP0 0xF0 /* experimental use id's */
#define I2C_DRIVERID_EXP1 0xF1
@@ -98,6 +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 */
@@ -127,6 +137,12 @@
#define I2C_DRIVERID_ADM1024 1025
#define I2C_DRIVERID_IT87 1026
#define I2C_DRIVERID_CH700X 1027 /* single driver for CH7003-7009 digital pc to tv encoders */
+#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 ----------------------------------------------------
@@ -143,10 +159,12 @@
#define I2C_ALGO_ISA 0x050000 /* lm_sensors ISA pseudo-adapter */
#define I2C_ALGO_SAA7146 0x060000 /* SAA 7146 video decoder bus */
#define I2C_ALGO_ACB 0x070000 /* ACCESS.bus algorithm */
-
+#define I2C_ALGO_IIC 0x080000 /* ITE IIC bus */
+#define I2C_ALGO_SAA7134 0x090000
#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 */

@@ -174,9 +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 */
@@ -189,6 +209,13 @@
/* --- MPC8xx PowerPC adapters */
#define I2C_HW_MPC8XX_EPON 0x00 /* Eponymous MPC8xx I2C adapter */

+/* --- 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 2002-02-25 14:37:57.000000000 -0500
+++ linux/drivers/i2c/i2c-proc.c 2002-07-23 09:14:57.000000000 -0400
@@ -32,16 +32,10 @@
#include <linux/proc_fs.h>
#include <linux/ioport.h>
#include <asm/uaccess.h>
-
#include <linux/i2c.h>
#include <linux/i2c-proc.h>
-
#include <linux/init.h>

-/* FIXME need i2c versioning */
-#define LM_DATE "20010825"
-#define LM_VERSION "2.6.1"
-
#ifndef THIS_MODULE
#define THIS_MODULE NULL
#endif
@@ -67,10 +61,6 @@

static struct i2c_client *i2c_clients[SENSORS_ENTRY_MAX];
static unsigned short i2c_inodes[SENSORS_ENTRY_MAX];
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,3,1)
-static void i2c_fill_inode(struct inode *inode, int fill);
-static void i2c_dir_fill_inode(struct inode *inode, int fill);
-#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2,3,1) */

static ctl_table sysctl_table[] = {
{CTL_DEV, "dev", NULL, 0, 0555},
@@ -180,9 +170,10 @@
new_table[i].extra2 = client;

if (!(new_header = register_sysctl_table(new_table, 0))) {
+ 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;
@@ -194,18 +185,13 @@
!new_header->ctl_table->child->child ||
!new_header->ctl_table->child->child->de) {
printk
- ("i2c-proc.o: NULL pointer when trying to install fill_inode fix!\n");
+ (KERN_ERR "i2c-proc.o: NULL pointer when trying to install fill_inode fix!\n");
return id;
}
#endif /* DEBUG */
i2c_inodes[id - 256] =
new_header->ctl_table->child->child->de->low_ino;
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,27))
new_header->ctl_table->child->child->de->owner = controlling_mod;
-#else
- new_header->ctl_table->child->child->de->fill_inode =
- &i2c_dir_fill_inode;
-#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,27)) */

return id;
}
@@ -247,7 +233,7 @@

#ifdef DEBUG
if (!inode) {
- printk("i2c-proc.o: Warning: inode NULL in fill_inode()\n");
+ printk(KERN_ERR "i2c-proc.o: Warning: inode NULL in fill_inode()\n");
return;
}
#endif /* def DEBUG */
@@ -258,7 +244,7 @@
#ifdef DEBUG
if (i == SENSORS_ENTRY_MAX) {
printk
- ("i2c-proc.o: Warning: inode (%ld) not found in fill_inode()\n",
+ (KERN_ERR "i2c-proc.o: Warning: inode (%ld) not found in fill_inode()\n",
inode->i_ino);
return;
}
@@ -684,7 +670,7 @@
&& (addr == this_force->force[j + 1])) {
#ifdef DEBUG
printk
- ("i2c-proc.o: found force parameter for adapter %d, addr %04x\n",
+ (KERN_DEBUG "i2c-proc.o: found force parameter for adapter %d, addr %04x\n",
adapter_id, addr);
#endif
if (
@@ -714,7 +700,7 @@
&& (addr == address_data->ignore[i + 1])) {
#ifdef DEBUG
printk
- ("i2c-proc.o: found ignore parameter for adapter %d, "
+ (KERN_DEBUG "i2c-proc.o: found ignore parameter for adapter %d, "
"addr %04x\n", adapter_id, addr);
#endif
found = 1;
@@ -734,7 +720,7 @@
&& (addr <= address_data->ignore_range[i + 2])) {
#ifdef DEBUG
printk
- ("i2c-proc.o: found ignore_range parameter for adapter %d, "
+ (KERN_DEBUG "i2c-proc.o: found ignore_range parameter for adapter %d, "
"addr %04x\n", adapter_id, addr);
#endif
found = 1;
@@ -753,7 +739,7 @@
if (addr == address_data->normal_isa[i]) {
#ifdef DEBUG
printk
- ("i2c-proc.o: found normal isa entry for adapter %d, "
+ (KERN_DEBUG "i2c-proc.o: found normal isa entry for adapter %d, "
"addr %04x\n", adapter_id,
addr);
#endif
@@ -775,7 +761,7 @@
0)) {
#ifdef DEBUG
printk
- ("i2c-proc.o: found normal isa_range entry for adapter %d, "
+ (KERN_DEBUG "i2c-proc.o: found normal isa_range entry for adapter %d, "
"addr %04x", adapter_id, addr);
#endif
found = 1;
@@ -789,7 +775,7 @@
found = 1;
#ifdef DEBUG
printk
- ("i2c-proc.o: found normal i2c entry for adapter %d, "
+ (KERN_DEBUG "i2c-proc.o: found normal i2c entry for adapter %d, "
"addr %02x", adapter_id, addr);
#endif
}
@@ -805,7 +791,7 @@
{
#ifdef DEBUG
printk
- ("i2c-proc.o: found normal i2c_range entry for adapter %d, "
+ (KERN_DEBUG "i2c-proc.o: found normal i2c_range entry for adapter %d, "
"addr %04x\n", adapter_id, addr);
#endif
found = 1;
@@ -822,7 +808,7 @@
&& (addr == address_data->probe[i + 1])) {
#ifdef DEBUG
printk
- ("i2c-proc.o: found probe parameter for adapter %d, "
+ (KERN_DEBUG "i2c-proc.o: found probe parameter for adapter %d, "
"addr %04x\n", adapter_id, addr);
#endif
found = 1;
@@ -841,7 +827,7 @@
found = 1;
#ifdef DEBUG
printk
- ("i2c-proc.o: found probe_range parameter for adapter %d, "
+ (KERN_DEBUG "i2c-proc.o: found probe_range parameter for adapter %d, "
"addr %04x\n", adapter_id, addr);
#endif
}
@@ -862,17 +848,15 @@

int __init sensors_init(void)
{
- printk("i2c-proc.o version %s (%s)\n", LM_VERSION, LM_DATE);
+ printk(KERN_INFO "i2c-proc.o version %s (%s)\n", I2C_VERSION, I2C_DATE);
i2c_initialized = 0;
if (!
(i2c_proc_header =
- register_sysctl_table(i2c_proc, 0))) return -ENOMEM;
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,1))
+ register_sysctl_table(i2c_proc, 0))) {
+ printk(KERN_ERR "i2c-proc.o: error: sysctl interface not supported by kernel!\n");
+ return -EPERM;
+ }
i2c_proc_header->ctl_table->child->de->owner = THIS_MODULE;
-#else
- i2c_proc_header->ctl_table->child->de->fill_inode =
- &i2c_fill_inode;
-#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,1)) */
i2c_initialized++;
return 0;
}
@@ -907,4 +891,5 @@
{
return i2c_cleanup();
}
+
#endif /* MODULE */
--- linux/include/linux/i2c-proc.h.orig 2001-10-11 11:05:47.000000000 -0400
+++ linux/include/linux/i2c-proc.h 2002-07-23 01:45:21.000000000 -0400
@@ -1,6 +1,7 @@
/*
- sensors.h - Part of lm_sensors, Linux kernel modules for hardware
- monitoring
+ i2c-proc.h - Part of the i2c package
+ was originally sensors.h - Part of lm_sensors, Linux kernel modules
+ for hardware monitoring
Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl>

This program is free software; you can redistribute it and/or modify
--- linux/include/linux/i2c.h.orig 2001-10-11 11:05:47.000000000 -0400
+++ linux/include/linux/i2c.h 2002-08-13 00:21:05.000000000 -0400
@@ -23,13 +23,13 @@
/* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and
Frodo Looijaard <frodol@dds.nl> */

-/* $Id: i2c.h,v 1.46 2001/08/31 00:04:07 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 "20010830"
-#define I2C_VERSION "2.6.1"
+#define I2C_DATE "20020719"
+#define I2C_VERSION "2.6.4"

#include <linux/i2c-id.h> /* id values of adapters et. al. */
#include <linux/types.h>
@@ -48,11 +48,8 @@
#endif

#include <asm/page.h> /* for 2.2.xx */
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,0,25)
#include <linux/sched.h>
-#else
#include <asm/semaphore.h>
-#endif
#include <linux/config.h>

/* --- General options ------------------------------------------------ */
@@ -123,6 +120,8 @@
extern s32 i2c_smbus_write_block_data(struct i2c_client * client,
u8 command, u8 length,
u8 *values);
+extern s32 i2c_smbus_read_i2c_block_data(struct i2c_client * client,
+ u8 command, u8 *values);
extern s32 i2c_smbus_write_i2c_block_data(struct i2c_client * client,
u8 command, u8 length,
u8 *values);
@@ -226,10 +225,6 @@
u32 (*functionality) (struct i2c_adapter *);
};

-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,1,29)
-struct proc_dir_entry;
-#endif
-
/*
* i2c_adapter is the structure used to identify a physical i2c bus along
* with the access algorithms necessary to access it.
@@ -267,9 +262,6 @@
#ifdef CONFIG_PROC_FS
/* No need to set this when you initialize the adapter */
int inode;
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,1,29)
- struct proc_dir_entry *proc_entry;
-#endif
#endif /* def CONFIG_PROC_FS */
};

@@ -281,6 +273,9 @@
#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
@@ -396,6 +391,12 @@
#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
@@ -406,8 +407,12 @@
#define I2C_FUNC_SMBUS_PROC_CALL 0x00800000
#define I2C_FUNC_SMBUS_READ_BLOCK_DATA 0x01000000
#define I2C_FUNC_SMBUS_WRITE_BLOCK_DATA 0x02000000
-#define I2C_FUNC_SMBUS_READ_I2C_BLOCK 0x04000000 /* New I2C-like block */
-#define I2C_FUNC_SMBUS_WRITE_I2C_BLOCK 0x08000000 /* transfer */
+#define I2C_FUNC_SMBUS_READ_I2C_BLOCK 0x04000000 /* I2C-like block xfer */
+#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
@@ -419,21 +424,40 @@
I2C_FUNC_SMBUS_WRITE_BLOCK_DATA
#define I2C_FUNC_SMBUS_I2C_BLOCK I2C_FUNC_SMBUS_READ_I2C_BLOCK | \
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 | \
I2C_FUNC_SMBUS_BYTE_DATA | \
I2C_FUNC_SMBUS_WORD_DATA | \
I2C_FUNC_SMBUS_PROC_CALL | \
- I2C_FUNC_SMBUS_WRITE_BLOCK_DATA
+ I2C_FUNC_SMBUS_WRITE_BLOCK_DATA | \
+ 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 */
@@ -449,6 +473,11 @@
#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:
@@ -474,6 +503,7 @@

#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
\
 
 \ /
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