AA: generic: allow to disable [25]GHz support in ath9k via platform data

Backport of r33954.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/branches/attitude_adjustment@33975 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 70 insertions, 0 deletions

diff --git a/package/mac80211/patches/b01-ath9k-allow-to-disable-bands-via-platform-data.patch b/package/mac80211/patches/b01-ath9k-allow-to-disable-bands-via-platform-data.patch
new file mode 100644
index 000000000..0a071ffcc
--- /dev/null
+++ b/package/mac80211/patches/b01-ath9k-allow-to-disable-bands-via-platform-data.patch
@@ -0,0 +1,70 @@
+--- a/include/linux/ath9k_platform.h
++++ b/include/linux/ath9k_platform.h
+@@ -31,6 +31,9 @@ struct ath9k_platform_data {
+ 
+ 	bool endian_check;
+ 	bool is_clk_25mhz;
++	bool disable_2ghz;
++	bool disable_5ghz;
++
+ 	int (*get_mac_revision)(void);
+ 	int (*external_reset)(void);
+ 
+--- a/drivers/net/wireless/ath/ath9k/hw.c
++++ b/drivers/net/wireless/ath/ath9k/hw.c
+@@ -2413,17 +2413,25 @@ int ath9k_hw_fill_cap_info(struct ath_hw
+ 	}
+ 
+ 	eeval = ah->eep_ops->get_eeprom(ah, EEP_OP_MODE);
+-	if ((eeval & (AR5416_OPFLAGS_11G | AR5416_OPFLAGS_11A)) == 0) {
+-		ath_err(common,
+-			"no band has been marked as supported in EEPROM\n");
+-		return -EINVAL;
++
++	if (eeval & AR5416_OPFLAGS_11A) {
++		if (ah->disable_5ghz)
++			ath_warn(common, "disabling 5GHz band\n");
++		else
++			pCap->hw_caps |= ATH9K_HW_CAP_5GHZ;
+ 	}
+ 
+-	if (eeval & AR5416_OPFLAGS_11A)
+-		pCap->hw_caps |= ATH9K_HW_CAP_5GHZ;
++	if (eeval & AR5416_OPFLAGS_11G) {
++		if (ah->disable_2ghz)
++			ath_warn(common, "disabling 2GHz band\n");
++		else
++			pCap->hw_caps |= ATH9K_HW_CAP_2GHZ;
++	}
+ 
+-	if (eeval & AR5416_OPFLAGS_11G)
+-		pCap->hw_caps |= ATH9K_HW_CAP_2GHZ;
++	if ((pCap->hw_caps & (ATH9K_HW_CAP_2GHZ | ATH9K_HW_CAP_5GHZ)) == 0) {
++		ath_err(common, "both bands are disabled\n");
++		return -EINVAL;
++	}
+ 
+ 	if (AR_SREV_9485(ah) || AR_SREV_9285(ah) || AR_SREV_9330(ah))
+ 		chip_chainmask = 1;
+--- a/drivers/net/wireless/ath/ath9k/hw.h
++++ b/drivers/net/wireless/ath/ath9k/hw.h
+@@ -927,6 +927,8 @@ struct ath_hw {
+ 	bool is_clk_25mhz;
+ 	int (*get_mac_revision)(void);
+ 	int (*external_reset)(void);
++	bool disable_2ghz;
++	bool disable_5ghz;
+ };
+ 
+ struct ath_bus_ops {
+--- a/drivers/net/wireless/ath/ath9k/init.c
++++ b/drivers/net/wireless/ath/ath9k/init.c
+@@ -537,6 +537,8 @@ static int ath9k_init_softc(u16 devid, s
+ 		ah->is_clk_25mhz = pdata->is_clk_25mhz;
+ 		ah->get_mac_revision = pdata->get_mac_revision;
+ 		ah->external_reset = pdata->external_reset;
++		ah->disable_2ghz = pdata->disable_2ghz;
++		ah->disable_5ghz = pdata->disable_5ghz;
+ 		if (!pdata->endian_check)
+ 			ah->ah_flags |= AH_NO_EEP_SWAP;
+ 	}