kernel/drivers/net/wireless/mediatek/mt76/eeprom.c, branch linux-6.2.y

mediatek: mt76: eeprom: fix missing of_node_put() in mt76_find_power_limits_node()

2022-07-11T11:40:03Z

We should use of_node_put() for the reference 'np' returned by of_get_child_by_name() which will increase the refcount. Fixes: 22b980badc0f ("mt76: add functions for parsing rate power limits from DT") Signed-off-by: Liang He Signed-off-by: Felix Fietkau

mt76: eeprom: tolerate corrected bit-flips

2021-12-19T14:24:01Z

mtd_read() returns -EUCLEAN in case of corrected bit-flips. As data was read, don't error out in this case. Signed-off-by: Daniel Golle Acked-by: Hauke Mehrtens Signed-off-by: Felix Fietkau

mt76: Print error message when reading EEPROM from mtd failed

2021-10-23T11:23:45Z

When the EEPROM data is stored on a MTD partition print an error message when reading this MTD partition failed. This is currently happening often in OpenWrt because the initial data was written with using a flash driver which ignores the error detection data and now OpenWrt uses a driver which checks it. With this patch a better error message is shown: [ 8.986988] mt7915e 0000:01:00.0: WA Firmware Version: DEV_000000, Build Time: 20201105222323 [ 9.100508] mt7915e 0000:01:00.0: reading EEPROM from mtd factory failed: -117 [ 9.144289] mt7915e: probe of 0000:01:00.0 failed with error -22 mt7915 does not work without an EEPROM, MT7922 still works. Signed-off-by: Hauke Mehrtens Signed-off-by: Felix Fietkau

mt76: support reading EEPROM data embedded in fdt

2021-10-20T08:36:48Z

Some platforms boot from SD card and don't come with calibration data stored anywhere on the board. As EEPROM data is rather small it can be embedded into the device tree to be loaded from there by the mt76. Signed-off-by: Daniel Golle Signed-off-by: Felix Fietkau

mt76: connac: set 6G phymode in single-sku support

2021-10-20T08:36:45Z

Configure tx rate power for 6GHz channels. This is a preliminary patch to enable 6GHz band for mt7921 devices. Tested-by: Deren Wu Signed-off-by: Lorenzo Bianconi Signed-off-by: Felix Fietkau

mt76: mt7915: add support for applying pre-calibration data

2021-04-21T09:42:22Z

When the EEPROM data is read from flash, it can contain pre-calibration data, which can save calibration time. Note that group_cal can save 30% bootup calibration time, and dpd_cal can save 75% channel switching time. Tested-by: Bo Jiao Signed-off-by: Ryder Lee Signed-off-by: Felix Fietkau

mt76: extend DT rate power limits to support 11ax devices

2021-04-21T09:42:21Z

Enable parsing per-rate txpower limits from DT for 11ax chipsets. Co-developed-by: Felix Fietkau Signed-off-by: Felix Fietkau Tested-by: Evelyn Tsai Signed-off-by: Shayne Chen Signed-off-by: Lorenzo Bianconi Signed-off-by: Felix Fietkau

mt76: add functions for parsing rate power limits from DT

2021-04-21T09:42:21Z

This subnode can be used to set per-rate tx power limits either per country code / regdomain or globally. These limits are typically provided by the device manufacturers and are used to limit sideband emissions and stay within regulatory limits Signed-off-by: Felix Fietkau Signed-off-by: Lorenzo Bianconi Signed-off-by: Felix Fietkau

of: net: pass the dst buffer to of_get_mac_address()

2021-04-13T21:35:02Z

of_get_mac_address() returns a "const void*" pointer to a MAC address. Lately, support to fetch the MAC address by an NVMEM provider was added. But this will only work with platform devices. It will not work with PCI devices (e.g. of an integrated root complex) and esp. not with DSA ports. There is an of_* variant of the nvmem binding which works without devices. The returned data of a nvmem_cell_read() has to be freed after use. On the other hand the return of_get_mac_address() points to some static data without a lifetime. The trick for now, was to allocate a device resource managed buffer which is then returned. This will only work if we have an actual device. Change it, so that the caller of of_get_mac_address() has to supply a buffer where the MAC address is written to. Unfortunately, this will touch all drivers which use the of_get_mac_address(). Usually the code looks like: const char *addr; addr = of_get_mac_address(np); if (!IS_ERR(addr)) ether_addr_copy(ndev->dev_addr, addr); This can then be simply rewritten as: of_get_mac_address(np, ndev->dev_addr); Sometimes is_valid_ether_addr() is used to test the MAC address. of_get_mac_address() already makes sure, it just returns a valid MAC address. Thus we can just test its return code. But we have to be careful if there are still other sources for the MAC address before the of_get_mac_address(). In this case we have to keep the is_valid_ether_addr() call. The following coccinelle patch was used to convert common cases to the new style. Afterwards, I've manually gone over the drivers and fixed the return code variable: either used a new one or if one was already available use that. Mansour Moufid, thanks for that coccinelle patch! @a@ identifier x; expression y, z; @@ - x = of_get_mac_address(y); + x = of_get_mac_address(y, z); <... - ether_addr_copy(z, x); ...> @@ identifier a.x; @@ - if (<+... x ...+>) {} @@ identifier a.x; @@ if (<+... x ...+>) { ... } - else {} @@ identifier a.x; expression e; @@ - if (<+... x ...+>@e) - {} - else + if (!(e)) {...} @@ expression x, y, z; @@ - x = of_get_mac_address(y, z); + of_get_mac_address(y, z); ... when != x All drivers, except drivers/net/ethernet/aeroflex/greth.c, were compile-time tested. Suggested-by: Andrew Lunn Signed-off-by: Michael Walle Reviewed-by: Andrew Lunn Signed-off-by: David S. Miller

mt76: testmode: move mtd part to mt76_dev

2021-01-26T19:07:47Z

Move testmode mtd variables to mt76_dev, since they are the same on each phy. Signed-off-by: Shayne Chen Acked-by: Ryder Lee Signed-off-by: Felix Fietkau