Felix Fietkau <nbd@xxxxxxxxxxx> writes:
> This will be used by drivers for MT76x2e, MT7603e and MT7628
>
> Signed-off-by: Felix Fietkau <nbd@xxxxxxxxxxx>
[...]
> +static int
> +mt76_get_of_eeprom(struct mt76_dev *dev, int len)
> +{
> +#ifdef CONFIG_OF
> + struct device_node *np = dev->dev->of_node;
> + struct mtd_info *mtd;
> + const __be32 *list;
> + const char *part;
> + phandle phandle;
> + int offset = 0;
> + int size;
> + size_t retlen;
> + int ret;
> +
> + if (!np)
> + return -ENOENT;
> +
> + list = of_get_property(np, "mediatek,mtd-eeprom", &size);
> + if (!list)
> + return -ENOENT;
> +
> + phandle = be32_to_cpup(list++);
> + if (!phandle)
> + return -ENOENT;
> +
> + np = of_find_node_by_phandle(phandle);
> + if (!np)
> + return -EINVAL;
> +
> + part = of_get_property(np, "label", NULL);
> + if (!part)
> + part = np->name;
> +
> + mtd = get_mtd_device_nm(part);
> + if (IS_ERR(mtd))
> + return PTR_ERR(mtd);
> +
> + if (size <= sizeof(*list))
> + return -EINVAL;
> +
> + offset = be32_to_cpup(list);
> + ret = mtd_read(mtd, offset, len, &retlen, dev->eeprom.data);
> + put_mtd_device(mtd);
> + if (ret)
> + return ret;
> +
> + if (retlen < len)
> + return -EINVAL;
> +
> + return 0;
> +#else
> + return -ENOENT;
> +#endif
> +}
> +
> +void
> +mt76_eeprom_override(struct mt76_dev *dev)
> +{
> +#ifdef CONFIG_OF
> + struct device_node *np = dev->dev->of_node;
> + const __be32 *val;
> + const u8 *mac;
> + int size;
> +
> + if (!np)
> + return;
> +
> + val = of_get_property(np, "mediatek,2ghz", &size);
> + if (val)
> + dev->cap.has_2ghz = be32_to_cpup(val);
> +
> + val = of_get_property(np, "mediatek,5ghz", &size);
> + if (val)
> + dev->cap.has_5ghz = be32_to_cpup(val);
> +
> + mac = of_get_mac_address(np);
> + if (mac)
> + memcpy(dev->macaddr, mac, ETH_ALEN);
> +#endif
All device tree properties need a binding document in
Documentation/devicetree/bindings/ which will be reviewed by the device
tree maintainers.
> +MODULE_LICENSE("GPL");
"GPL v2"?
--
Kalle Valo
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