[PATCH 5/7] ath9k: of: Use the clk API to get the reference clock rate
From: Alban <albeu@free.fr>
Date: 2017-03-13 21:08:42
Also in:
linux-wireless, lkml
Subsystem:
atheros ath generic utilities, qualcomm atheros ath9k wireless driver, the rest · Maintainers:
Jeff Johnson, Toke Høiland-Jørgensen, Linus Torvalds
If a clock named "ref" exists use it to get the reference clock rate. Signed-off-by: Alban <albeu@free.fr> --- drivers/net/wireless/ath/ath9k/init.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c
index 36b51a5..5cb9c61 100644
--- a/drivers/net/wireless/ath/ath9k/init.c
+++ b/drivers/net/wireless/ath/ath9k/init.c@@ -24,6 +24,7 @@ #include <linux/of_net.h> #include <linux/nvmem-consumer.h> #include <linux/relay.h> +#include <linux/clk.h> #include <net/ieee80211_radiotap.h> #include "ath9k.h"
@@ -564,6 +565,7 @@ static int ath9k_of_init(struct ath_softc *sc) struct ath_hw *ah = sc->sc_ah; struct ath_common *common = ath9k_hw_common(ah); enum ath_bus_type bus_type = common->bus_ops->ath_bus_type; + struct clk *clk; const char *mac; char eeprom_name[100]; int ret;
@@ -573,6 +575,12 @@ static int ath9k_of_init(struct ath_softc *sc) ath_dbg(common, CONFIG, "parsing configuration from OF node\n"); + clk = clk_get(sc->dev, "ref"); + if (!IS_ERR(clk)) { + ah->is_clk_25mhz = (clk_get_rate(clk) == 25000000); + clk_put(clk); + } + if (of_property_read_bool(np, "qca,no-eeprom")) { /* ath9k-eeprom-<bus>-<id>.bin */ scnprintf(eeprom_name, sizeof(eeprom_name),
--
2.7.4