[PATCH 5/7] ath9k: of: Use the clk API to get the reference clock rate

Alban
2017-03-13T21:07:09Z

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