1 From cea03be5a848823cb8052e2e7b93cb2249d5f60c Mon Sep 17 00:00:00 2001
2 From: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
3 Date: Sun, 16 Oct 2016 22:59:07 +0200
4 Subject: [PATCH 3/3] ath9k: parse the device configuration from an OF node
6 This allows setting the MAC address and specifying that the firmware
7 will be requested from userspace (because there might not be a hardware
8 EEPROM connected to the chip) for ath9k based PCI devices using
11 There is some out-of-tree code to "convert devicetree to
12 ath9k_platform_data" (for example in OpenWrt and LEDE) which becomes
13 obsolete with this patch.
15 Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
16 Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
18 drivers/net/wireless/ath/ath9k/init.c | 42 +++++++++++++++++++++++++++++++++++
19 1 file changed, 42 insertions(+)
21 --- a/drivers/net/wireless/ath/ath9k/init.c
22 +++ b/drivers/net/wireless/ath/ath9k/init.c
24 #include <linux/slab.h>
25 #include <linux/ath9k_platform.h>
26 #include <linux/module.h>
27 +#include <linux/of.h>
28 +#include <linux/of_net.h>
29 #include <linux/relay.h>
30 #include <net/ieee80211_radiotap.h>
32 @@ -554,6 +556,42 @@ static int ath9k_init_platform(struct at
36 +static int ath9k_of_init(struct ath_softc *sc)
38 + struct device_node *np = sc->dev->of_node;
39 + struct ath_hw *ah = sc->sc_ah;
40 + struct ath_common *common = ath9k_hw_common(ah);
41 + enum ath_bus_type bus_type = common->bus_ops->ath_bus_type;
43 + char eeprom_name[100];
46 + if (!of_device_is_available(np))
49 + ath_dbg(common, CONFIG, "parsing configuration from OF node\n");
51 + if (of_property_read_bool(np, "qca,no-eeprom")) {
52 + /* ath9k-eeprom-<bus>-<id>.bin */
53 + scnprintf(eeprom_name, sizeof(eeprom_name),
54 + "ath9k-eeprom-%s-%s.bin",
55 + ath_bus_type_to_string(bus_type), dev_name(ah->dev));
57 + ret = ath9k_eeprom_request(sc, eeprom_name);
62 + mac = of_get_mac_address(np);
64 + ether_addr_copy(common->macaddr, mac);
66 + ah->ah_flags &= ~AH_USE_EEPROM;
67 + ah->ah_flags |= AH_NO_EEP_SWAP;
72 static int ath9k_init_softc(u16 devid, struct ath_softc *sc,
73 const struct ath_bus_ops *bus_ops)
75 @@ -610,6 +648,10 @@ static int ath9k_init_softc(u16 devid, s
79 + ret = ath9k_of_init(sc);
83 if (ath9k_led_active_high != -1)
84 ah->config.led_active_high = ath9k_led_active_high == 1;