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FMC: make eeprom attribute writable

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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>
This commit is contained in:
Alessandro Rubini
2014-02-22 09:11:12 +01:00
committed by Greg Kroah-Hartman
parent dd97b2410e
commit 5c9a87367d
2 changed files with 36 additions and 50 deletions
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15
drivers/fmc/fmc-core.c
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@@ -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,
};
/*