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| author | Bartosz Golaszewski <bgolaszewski@baylibre.com> | 2019-02-05 14:18:25 +0100 |
|---|---|---|
| committer | Bartosz Golaszewski <bgolaszewski@baylibre.com> | 2019-02-14 09:32:35 +0100 |
| commit | 950bcbbe31548636d24e49b3abaf3780204f7fe8 (patch) | |
| tree | b4eef914d250efd1b45ec0246ea8c99ea947110c /drivers/misc/eeprom | |
| parent | e7224a116f0dac593233143849f25bc095f8d2cc (diff) | |
| download | blackbird-op-linux-950bcbbe31548636d24e49b3abaf3780204f7fe8.tar.gz blackbird-op-linux-950bcbbe31548636d24e49b3abaf3780204f7fe8.zip | |
eeprom: at24: implement support for 'num-addresses' property
If the device node defines 'num-addresses', let it override the default
behavior.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Diffstat (limited to 'drivers/misc/eeprom')
| -rw-r--r-- | drivers/misc/eeprom/at24.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/misc/eeprom/at24.c b/drivers/misc/eeprom/at24.c index b806a403ca46..63aa541c9608 100644 --- a/drivers/misc/eeprom/at24.c +++ b/drivers/misc/eeprom/at24.c @@ -641,11 +641,14 @@ static int at24_probe(struct i2c_client *client) if (!is_power_of_2(page_size)) dev_warn(dev, "page_size looks suspicious (no power of 2)!\n"); - if (flags & AT24_FLAG_TAKE8ADDR) - num_addresses = 8; - else - num_addresses = DIV_ROUND_UP(byte_len, - (flags & AT24_FLAG_ADDR16) ? 65536 : 256); + err = device_property_read_u32(dev, "num-addresses", &num_addresses); + if (err) { + if (flags & AT24_FLAG_TAKE8ADDR) + num_addresses = 8; + else + num_addresses = DIV_ROUND_UP(byte_len, + (flags & AT24_FLAG_ADDR16) ? 65536 : 256); + } if ((flags & AT24_FLAG_SERIAL) && (flags & AT24_FLAG_MAC)) { dev_err(dev, |
