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Backport SMBus PEC support rewrite from Linux 2.6:

Browse Source 
Discard I2C_FUNC_SMBUS_*_PEC defines. i2c clients are not supposed to
check for PEC support of i2c bus drivers on individual SMBus
transactions, and i2c bus drivers are not supposed to advertise them.


git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@3176 7894878c-1315-0410-8ee3-d5d059ff63e0
This commit is contained in:
Jean Delvare
2005-11-05 12:24:30 +00:00
parent f67127f5a7
commit c12c82c13d
4 changed files with 24 additions and 78 deletions
Download Patch File Download Diff File Expand all files Collapse all files

77
prog/dump/i2cdump.c
View File

@@ -183,74 +183,35 @@ int main(int argc, char *argv[])
switch(size) {
case I2C_SMBUS_BYTE:
if (pec) {
if (!(funcs & I2C_FUNC_SMBUS_BYTE_PEC)) {
fprintf(stderr, "Error: Adapter for i2c bus "
"%d does not have byte w/ PEC "
"capability\n", i2cbus);
exit(1);
}
} else {
if (!(funcs & I2C_FUNC_SMBUS_BYTE)) {
fprintf(stderr, "Error: Adapter for i2c bus "
"%d does not have byte capability\n",
i2cbus);
exit(1);
}
if (!((funcs & I2C_FUNC_SMBUS_BYTE) == I2C_FUNC_SMBUS_BYTE)) {
fprintf(stderr, "Error: Adapter for i2c bus %d does "
"not have byte capability\n", i2cbus);
exit(1);
}
break;
case I2C_SMBUS_BYTE_DATA:
if (pec) {
if (!(funcs & I2C_FUNC_SMBUS_READ_BYTE_DATA_PEC)) {
fprintf(stderr, "Error: Adapter for i2c bus "
"%d does not have byte read w/ PEC "
"capability\n", i2cbus);
exit(1);
}
} else {
if (!(funcs & I2C_FUNC_SMBUS_READ_BYTE_DATA)) {
fprintf(stderr, "Error: Adapter for i2c bus "
"%d does not have byte read "
"capability\n", i2cbus);
exit(1);
}
if (!(funcs & I2C_FUNC_SMBUS_READ_BYTE_DATA)) {
fprintf(stderr, "Error: Adapter for i2c bus %d does "
"not have byte read capability\n", i2cbus);
exit(1);
}
break;
case I2C_SMBUS_WORD_DATA:
if (pec) {
if (!(funcs & I2C_FUNC_SMBUS_READ_WORD_DATA_PEC)) {
fprintf(stderr, "Error: Adapter for i2c bus "
"%d does not have word read w/ PEC "
"capability\n", i2cbus);
exit(1);
}
} else {
if (!(funcs & I2C_FUNC_SMBUS_READ_WORD_DATA)) {
fprintf(stderr, "Error: Adapter for i2c bus "
"%d does not have word read "
"capability\n", i2cbus);
exit(1);
}
if (!(funcs & I2C_FUNC_SMBUS_READ_WORD_DATA)) {
fprintf(stderr, "Error: Adapter for i2c bus %d does "
"not have word read capability\n", i2cbus);
exit(1);
}
break;
case I2C_SMBUS_BLOCK_DATA:
if (pec) {
if (!(funcs & I2C_FUNC_SMBUS_READ_BLOCK_DATA_PEC)) {
fprintf(stderr, "Error: Adapter for i2c bus "
"%d does not have smbus block read "
"w/ PEC capability\n", i2cbus);
exit(1);
}
} else {
if (!(funcs & I2C_FUNC_SMBUS_READ_BLOCK_DATA)) {
fprintf(stderr, "Error: Adapter for i2c bus "
"%d does not have smbus block read "
"capability\n", i2cbus);
exit(1);
}
if (!(funcs & I2C_FUNC_SMBUS_READ_BLOCK_DATA)) {
fprintf(stderr, "Error: Adapter for i2c bus %d does "
"not have smbus block read capability\n",
i2cbus);
exit(1);
}
break;
@@ -278,6 +239,10 @@ int main(int argc, char *argv[])
strerror(errno));
exit(1);
}
if (!(funcs & (I2C_FUNC_SMBUS_HWPEC_CALC | I2C_FUNC_I2C))) {
fprintf(stderr, "Warning: Adapter for i2c bus %d does "
"not seem to actually support PEC\n", i2cbus);
}
}
if (!yes) {