81 lines
2.4 KiB
Diff
81 lines
2.4 KiB
Diff
From: Felix Fietkau <nbd@openwrt.org>
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Date: Sat, 18 Oct 2014 18:27:23 +0200
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Subject: [PATCH] ath9k: allow disabling bands via platform data
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Some devices have multiple bands enables in the EEPROM data, even though
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they are only calibrated for one. Allow platform data to disable
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unsupported bands.
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Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
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Signed-off-by: Felix Fietkau <nbd@openwrt.org>
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---
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--- a/drivers/net/wireless/ath/ath9k/hw.c
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+++ b/drivers/net/wireless/ath/ath9k/hw.c
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@@ -2344,17 +2344,25 @@ int ath9k_hw_fill_cap_info(struct ath_hw
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}
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eeval = ah->eep_ops->get_eeprom(ah, EEP_OP_MODE);
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- if ((eeval & (AR5416_OPFLAGS_11G | AR5416_OPFLAGS_11A)) == 0) {
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- ath_err(common,
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- "no band has been marked as supported in EEPROM\n");
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- return -EINVAL;
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+
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+ if (eeval & AR5416_OPFLAGS_11A) {
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+ if (ah->disable_5ghz)
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+ ath_warn(common, "disabling 5GHz band\n");
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+ else
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+ pCap->hw_caps |= ATH9K_HW_CAP_5GHZ;
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}
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- if (eeval & AR5416_OPFLAGS_11A)
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- pCap->hw_caps |= ATH9K_HW_CAP_5GHZ;
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+ if (eeval & AR5416_OPFLAGS_11G) {
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+ if (ah->disable_2ghz)
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+ ath_warn(common, "disabling 2GHz band\n");
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+ else
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+ pCap->hw_caps |= ATH9K_HW_CAP_2GHZ;
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+ }
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- if (eeval & AR5416_OPFLAGS_11G)
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- pCap->hw_caps |= ATH9K_HW_CAP_2GHZ;
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+ if ((pCap->hw_caps & (ATH9K_HW_CAP_2GHZ | ATH9K_HW_CAP_5GHZ)) == 0) {
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+ ath_err(common, "both bands are disabled\n");
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+ return -EINVAL;
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+ }
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if (AR_SREV_9485(ah) ||
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AR_SREV_9285(ah) ||
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--- a/drivers/net/wireless/ath/ath9k/hw.h
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+++ b/drivers/net/wireless/ath/ath9k/hw.h
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@@ -930,6 +930,8 @@ struct ath_hw {
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bool is_clk_25mhz;
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int (*get_mac_revision)(void);
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int (*external_reset)(void);
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+ bool disable_2ghz;
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+ bool disable_5ghz;
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const struct firmware *eeprom_blob;
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--- a/drivers/net/wireless/ath/ath9k/init.c
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+++ b/drivers/net/wireless/ath/ath9k/init.c
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@@ -531,6 +531,8 @@ static int ath9k_init_softc(u16 devid, s
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ah->is_clk_25mhz = pdata->is_clk_25mhz;
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ah->get_mac_revision = pdata->get_mac_revision;
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ah->external_reset = pdata->external_reset;
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+ ah->disable_2ghz = pdata->disable_2ghz;
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+ ah->disable_5ghz = pdata->disable_5ghz;
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if (!pdata->endian_check)
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ah->ah_flags |= AH_NO_EEP_SWAP;
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}
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--- a/include/linux/ath9k_platform.h
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+++ b/include/linux/ath9k_platform.h
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@@ -34,6 +34,8 @@ struct ath9k_platform_data {
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bool endian_check;
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bool is_clk_25mhz;
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bool tx_gain_buffalo;
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+ bool disable_2ghz;
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+ bool disable_5ghz;
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int (*get_mac_revision)(void);
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int (*external_reset)(void);
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