From 5d266b55ed4c4c4efe2e150b8b2326bb13bb6fb0 Mon Sep 17 00:00:00 2001 From: Coia Prant Date: Mon, 17 Feb 2025 14:22:59 +0800 Subject: [PATCH] mac80211: rt2x00: load the eeprom data from devicetree embedded data on Ralink SoCs It will allow loading eeprom from eeprom-data embedded in device tree. Ported from mediatek mt76 wireless driver (drivers/net/wireless/mediatek/mt76/eeprom.c) Signed-off-by: Coia Prant Link: https://github.com/openwrt/openwrt/pull/17472 Signed-off-by: Hauke Mehrtens --- ...EEPROM-from-devicetree-embedded-data.patch | 76 +++++++++++++++++++ 1 file changed, 76 insertions(+) create mode 100644 package/kernel/mac80211/patches/rt2x00/603-wifi-rt2x00-Add-support-for-loading-EEPROM-from-devicetree-embedded-data.patch diff --git a/package/kernel/mac80211/patches/rt2x00/603-wifi-rt2x00-Add-support-for-loading-EEPROM-from-devicetree-embedded-data.patch b/package/kernel/mac80211/patches/rt2x00/603-wifi-rt2x00-Add-support-for-loading-EEPROM-from-devicetree-embedded-data.patch new file mode 100644 index 0000000000..0ef946a6cb --- /dev/null +++ b/package/kernel/mac80211/patches/rt2x00/603-wifi-rt2x00-Add-support-for-loading-EEPROM-from-devicetree-embedded-data.patch @@ -0,0 +1,76 @@ +From adf957124a115bdf3e4728e1ea8c70a632648cf0 Mon Sep 17 00:00:00 2001 +From: Coia Prant +Date: Fri, 14 Feb 2025 15:49:55 +0800 +Subject: [PATCH] wifi: rt2x00: Add support for loading EEPROM from devicetree + embedded data + +This patch allows rt2x00 to load eeprom from devicetree embedded data. + +Example: + +/* load eeprom from embedded data 'eeprom-data' */ +&wmac { + ralink,eeprom-data = <0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff + 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff + 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff + 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff + 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff + 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff + 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff + 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff + 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff + 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff + 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff + 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff + 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff + 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff + 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff + 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff 0xffffffff>; +}; + +Signed-off-by: Coia Prant +--- + .../net/wireless/ralink/rt2x00/rt2x00eeprom.c | 25 +++++++++++++++++++ + 1 file changed, 25 insertions(+) + +--- a/drivers/net/wireless/ralink/rt2x00/rt2x00eeprom.c ++++ b/drivers/net/wireless/ralink/rt2x00/rt2x00eeprom.c +@@ -33,6 +33,27 @@ static void rt2800lib_eeprom_swap(struct + rt2x00dev->eeprom[i] = swab16(rt2x00dev->eeprom[i]); + } + ++static int rt2800lib_read_eeprom_data(struct rt2x00_dev *rt2x00dev) ++{ ++ struct device_node *np = rt2x00dev->dev->of_node; ++ unsigned int len = rt2x00dev->ops->eeprom_size; ++ const void *data; ++ int size; ++ ++ data = of_get_property(np, "ralink,eeprom-data", &size); ++ if (!data) ++ return -ENOENT; ++ ++ if (size != len) { ++ dev_err(rt2x00dev->dev, "invalid eeprom size, required: 0x%04x\n", len); ++ return -EINVAL; ++ } ++ ++ memcpy(rt2x00dev->eeprom, data, size); ++ ++ return 0; ++} ++ + #if IS_ENABLED(CONFIG_MTD) + static int rt2800lib_read_eeprom_mtd(struct rt2x00_dev *rt2x00dev) + { +@@ -193,6 +214,10 @@ int rt2x00lib_read_eeprom(struct rt2x00_ + { + int ret; + ++ ret = rt2800lib_read_eeprom_data(rt2x00dev); ++ if (!ret) ++ return 0; ++ + #if IS_ENABLED(CONFIG_MTD) + ret = rt2800lib_read_eeprom_mtd(rt2x00dev); + if (!ret) -- 2.30.2