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| author | Alessandro Rubini <rubini@gnudd.com> | 2014-02-22 09:11:12 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-02-28 15:12:08 -0800 |
| commit | 5c9a87367daf292244bd9bb3e67516dfa0027516 (patch) | |
| tree | c62996f9f46349aa3dfb86330ae7ec45ae2e0ad9 /drivers/fmc | |
| parent | dd97b2410e70d881a362e5b31b702f59c21e0da6 (diff) | |
| download | linux-rpi3-5c9a87367daf292244bd9bb3e67516dfa0027516.tar.gz linux-rpi3-5c9a87367daf292244bd9bb3e67516dfa0027516.tar.bz2 linux-rpi3-5c9a87367daf292244bd9bb3e67516dfa0027516.zip | |
FMC: make eeprom attribute writable
This allows easier modification to the eeprom than loading the
fmc-write-eeprom module. The carrier driver will refuse writing if
the FPGA is not running the golden gateware image, so writing in
practice is only available at manufacture/development time.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>
Acked-by: Juan David Gonzalez Cobas <dcobas@cern.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/fmc')
| -rw-r--r-- | drivers/fmc/fmc-core.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/drivers/fmc/fmc-core.c b/drivers/fmc/fmc-core.c index 5a5e616c6324..353fc546fb08 100644 --- a/drivers/fmc/fmc-core.c +++ b/drivers/fmc/fmc-core.c @@ -99,10 +99,23 @@ static ssize_t fmc_read_eeprom(struct file *file, struct kobject *kobj, return count; } +static ssize_t fmc_write_eeprom(struct file *file, struct kobject *kobj, + struct bin_attribute *bin_attr, + char *buf, loff_t off, size_t count) +{ + struct device *dev; + struct fmc_device *fmc; + + dev = container_of(kobj, struct device, kobj); + fmc = container_of(dev, struct fmc_device, dev); + return fmc->op->write_ee(fmc, off, buf, count); +} + static struct bin_attribute fmc_eeprom_attr = { - .attr = { .name = "eeprom", .mode = S_IRUGO, }, + .attr = { .name = "eeprom", .mode = S_IRUGO | S_IWUSR, }, .size = 8192, /* more or less standard */ .read = fmc_read_eeprom, + .write = fmc_write_eeprom, }; /* |