ath9k: Use a separate TX gain table for WZR-HP-G450H
The Buffalo device WZR-HP-G450H uses the index 3 for TX gain,
which is set to the high_power table currently. Later variants
of the router use the same index, but instead refer to the
low_ob_db gain table. This is not handled in the driver since
there is no way to distinguish board revisions and the high_power
table is used (incorrectly) for the newer variants.
By default, devices based on AR9300 using the TX gain index 3 have
to use the high_power table. To make sure that WZR-HP-G450H is not
broken when the high_power table is updated, use a separate array
based on information obtained from the platform data.
The current situation where only the original variant of WZR-HP-G450H
works properly stays unchanged.
Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c
index 5a0b7e82..609b7e1 100644
--- a/drivers/net/wireless/ath/ath9k/init.c
+++ b/drivers/net/wireless/ath/ath9k/init.c
@@ -554,7 +554,7 @@
sc->spec_config.fft_period = 0xF;
}
-static void ath9k_init_platform(struct ath_softc *sc)
+static void ath9k_init_pcoem_platform(struct ath_softc *sc)
{
struct ath_hw *ah = sc->sc_ah;
struct ath9k_hw_capabilities *pCap = &ah->caps;
@@ -664,6 +664,27 @@
release_firmware(sc->sc_ah->eeprom_blob);
}
+static int ath9k_init_soc_platform(struct ath_softc *sc)
+{
+ struct ath9k_platform_data *pdata = sc->dev->platform_data;
+ struct ath_hw *ah = sc->sc_ah;
+ int ret = 0;
+
+ if (!pdata)
+ return 0;
+
+ if (pdata->eeprom_name) {
+ ret = ath9k_eeprom_request(sc, pdata->eeprom_name);
+ if (ret)
+ return ret;
+ }
+
+ if (pdata->tx_gain_buffalo)
+ ah->config.tx_gain_buffalo = true;
+
+ return ret;
+}
+
static int ath9k_init_softc(u16 devid, struct ath_softc *sc,
const struct ath_bus_ops *bus_ops)
{
@@ -717,7 +738,11 @@
/*
* Platform quirks.
*/
- ath9k_init_platform(sc);
+ ath9k_init_pcoem_platform(sc);
+
+ ret = ath9k_init_soc_platform(sc);
+ if (ret)
+ return ret;
/*
* Enable WLAN/BT RX Antenna diversity only when:
@@ -731,7 +756,6 @@
common->bt_ant_diversity = 1;
spin_lock_init(&common->cc_lock);
-
spin_lock_init(&sc->sc_serial_rw);
spin_lock_init(&sc->sc_pm_lock);
mutex_init(&sc->mutex);
@@ -753,12 +777,6 @@
ath_read_cachesize(common, &csz);
common->cachelsz = csz << 2; /* convert to bytes */
- if (pdata && pdata->eeprom_name) {
- ret = ath9k_eeprom_request(sc, pdata->eeprom_name);
- if (ret)
- return ret;
- }
-
/* Initializes the hardware for all supported chipsets */
ret = ath9k_hw_init(ah);
if (ret)