ath9k: Add RF kill support
RF kill support is enabled when CONFIG_RFKILL is set. Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Vasanthakumar Thiagarajan
John W. Linville
parent
8feceb6792
commit
500c064d3a
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@ -798,10 +798,11 @@ struct ath_hal {
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struct ath9k_channel *ah_curchan;
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u32 ah_nchan;
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u16 ah_rfsilent;
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bool ah_rfkillEnabled;
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bool ah_isPciExpress;
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u16 ah_txTrigLevel;
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u16 ah_rfsilent;
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u32 ah_rfkill_gpio;
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u32 ah_rfkill_polarity;
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#ifndef ATH_NF_PER_CHAN
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struct ath9k_nfcal_hist nfCalHist[NUM_NF_READINGS];
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@ -1003,4 +1004,6 @@ bool ath9k_get_channel_edges(struct ath_hal *ah,
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void ath9k_hw_cfg_output(struct ath_hal *ah, u32 gpio,
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u32 ah_signal_type);
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void ath9k_hw_set_gpio(struct ath_hal *ah, u32 gpio, u32 value);
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u32 ath9k_hw_gpio_get(struct ath_hal *ah, u32 gpio);
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void ath9k_hw_cfg_gpio_input(struct ath_hal *ah, u32 gpio);
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#endif
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@ -40,6 +40,7 @@
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#include <asm/page.h>
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#include <net/mac80211.h>
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#include <linux/leds.h>
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#include <linux/rfkill.h>
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#include "ath9k.h"
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#include "rc.h"
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@ -823,6 +824,15 @@ struct ath_led {
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bool registered;
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};
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/* Rfkill */
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#define ATH_RFKILL_POLL_INTERVAL 2000 /* msecs */
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struct ath_rfkill {
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struct rfkill *rfkill;
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struct delayed_work rfkill_poll;
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char rfkill_name[32];
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};
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/********************/
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/* Main driver core */
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/********************/
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@ -906,6 +916,9 @@ struct ath_ht_info {
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#define SC_OP_PROTECT_ENABLE BIT(8)
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#define SC_OP_RXFLUSH BIT(9)
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#define SC_OP_LED_ASSOCIATED BIT(10)
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#define SC_OP_RFKILL_REGISTERED BIT(11)
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#define SC_OP_RFKILL_SW_BLOCKED BIT(12)
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#define SC_OP_RFKILL_HW_BLOCKED BIT(13)
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struct ath_softc {
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struct ieee80211_hw *hw;
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@ -1015,6 +1028,9 @@ struct ath_softc {
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struct ath_led assoc_led;
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struct ath_led tx_led;
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struct ath_led rx_led;
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/* Rfkill */
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struct ath_rfkill rf_kill;
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};
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int ath_init(u16 devid, struct ath_softc *sc);
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@ -2821,7 +2821,38 @@ void ath9k_hw_set_gpio(struct ath_hal *ah, u32 gpio, u32 val)
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AR_GPIO_BIT(gpio));
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}
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static u32 ath9k_hw_gpio_get(struct ath_hal *ah, u32 gpio)
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/*
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* Configure GPIO Input lines
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*/
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void ath9k_hw_cfg_gpio_input(struct ath_hal *ah, u32 gpio)
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{
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u32 gpio_shift;
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ASSERT(gpio < ah->ah_caps.num_gpio_pins);
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gpio_shift = gpio << 1;
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REG_RMW(ah,
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AR_GPIO_OE_OUT,
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(AR_GPIO_OE_OUT_DRV_NO << gpio_shift),
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(AR_GPIO_OE_OUT_DRV << gpio_shift));
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}
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#ifdef CONFIG_RFKILL
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static void ath9k_enable_rfkill(struct ath_hal *ah)
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{
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REG_SET_BIT(ah, AR_GPIO_INPUT_EN_VAL,
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AR_GPIO_INPUT_EN_VAL_RFSILENT_BB);
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REG_CLR_BIT(ah, AR_GPIO_INPUT_MUX2,
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AR_GPIO_INPUT_MUX2_RFSILENT);
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ath9k_hw_cfg_gpio_input(ah, ah->ah_rfkill_gpio);
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REG_SET_BIT(ah, AR_PHY_TEST, RFSILENT_BB);
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}
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#endif
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u32 ath9k_hw_gpio_get(struct ath_hal *ah, u32 gpio)
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{
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if (gpio >= ah->ah_caps.num_gpio_pins)
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return 0xffffffff;
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@ -3034,17 +3065,17 @@ static bool ath9k_hw_fill_cap_info(struct ath_hal *ah)
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pCap->hw_caps |= ATH9K_HW_CAP_ENHANCEDPM;
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#ifdef CONFIG_RFKILL
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ah->ah_rfsilent = ath9k_hw_get_eeprom(ahp, EEP_RF_SILENT);
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if (ah->ah_rfsilent & EEP_RFSILENT_ENABLED) {
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ahp->ah_gpioSelect =
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ah->ah_rfkill_gpio =
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MS(ah->ah_rfsilent, EEP_RFSILENT_GPIO_SEL);
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ahp->ah_polarity =
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ah->ah_rfkill_polarity =
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MS(ah->ah_rfsilent, EEP_RFSILENT_POLARITY);
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ath9k_hw_setcapability(ah, ATH9K_CAP_RFSILENT, 1, true,
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NULL);
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pCap->hw_caps |= ATH9K_HW_CAP_RFSILENT;
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}
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#endif
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if ((ah->ah_macVersion == AR_SREV_VERSION_5416_PCI) ||
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(ah->ah_macVersion == AR_SREV_VERSION_5416_PCIE) ||
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@ -5961,6 +5992,10 @@ bool ath9k_hw_reset(struct ath_hal *ah,
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ath9k_hw_init_interrupt_masks(ah, ah->ah_opmode);
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ath9k_hw_init_qos(ah);
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#ifdef CONFIG_RFKILL
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if (ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
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ath9k_enable_rfkill(ah);
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#endif
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ath9k_hw_init_user_settings(ah);
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REG_WRITE(ah, AR_STA_ID1,
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@ -6490,31 +6525,6 @@ ath9k_hw_setbssidmask(struct ath_hal *ah, const u8 *mask)
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return true;
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}
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#ifdef CONFIG_ATH9K_RFKILL
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static void ath9k_enable_rfkill(struct ath_hal *ah)
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{
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struct ath_hal_5416 *ahp = AH5416(ah);
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REG_SET_BIT(ah, AR_GPIO_INPUT_EN_VAL,
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AR_GPIO_INPUT_EN_VAL_RFSILENT_BB);
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REG_CLR_BIT(ah, AR_GPIO_INPUT_MUX2,
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AR_GPIO_INPUT_MUX2_RFSILENT);
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ath9k_hw_cfg_gpio_input(ah, ahp->ah_gpioSelect);
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REG_SET_BIT(ah, AR_PHY_TEST, RFSILENT_BB);
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if (ahp->ah_gpioBit == ath9k_hw_gpio_get(ah, ahp->ah_gpioSelect)) {
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ath9k_hw_set_gpio_intr(ah, ahp->ah_gpioSelect,
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!ahp->ah_gpioBit);
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} else {
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ath9k_hw_set_gpio_intr(ah, ahp->ah_gpioSelect,
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ahp->ah_gpioBit);
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}
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}
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#endif
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void
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ath9k_hw_write_associd(struct ath_hal *ah, const u8 *bssid,
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u16 assocId)
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@ -672,6 +672,209 @@ fail:
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ath_deinit_leds(sc);
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}
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#ifdef CONFIG_RFKILL
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/*******************/
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/* Rfkill */
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/*******************/
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static void ath_radio_enable(struct ath_softc *sc)
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{
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struct ath_hal *ah = sc->sc_ah;
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int status;
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spin_lock_bh(&sc->sc_resetlock);
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if (!ath9k_hw_reset(ah, ah->ah_curchan,
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sc->sc_ht_info.tx_chan_width,
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sc->sc_tx_chainmask,
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sc->sc_rx_chainmask,
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sc->sc_ht_extprotspacing,
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false, &status)) {
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DPRINTF(sc, ATH_DBG_FATAL,
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"%s: unable to reset channel %u (%uMhz) "
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"flags 0x%x hal status %u\n", __func__,
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ath9k_hw_mhz2ieee(ah,
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ah->ah_curchan->channel,
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ah->ah_curchan->channelFlags),
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ah->ah_curchan->channel,
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ah->ah_curchan->channelFlags, status);
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}
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spin_unlock_bh(&sc->sc_resetlock);
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ath_update_txpow(sc);
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if (ath_startrecv(sc) != 0) {
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DPRINTF(sc, ATH_DBG_FATAL,
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"%s: unable to restart recv logic\n", __func__);
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return;
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}
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if (sc->sc_flags & SC_OP_BEACONS)
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ath_beacon_config(sc, ATH_IF_ID_ANY); /* restart beacons */
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/* Re-Enable interrupts */
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ath9k_hw_set_interrupts(ah, sc->sc_imask);
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/* Enable LED */
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ath9k_hw_cfg_output(ah, ATH_LED_PIN,
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AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
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ath9k_hw_set_gpio(ah, ATH_LED_PIN, 0);
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ieee80211_wake_queues(sc->hw);
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}
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static void ath_radio_disable(struct ath_softc *sc)
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{
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struct ath_hal *ah = sc->sc_ah;
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int status;
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ieee80211_stop_queues(sc->hw);
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/* Disable LED */
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ath9k_hw_set_gpio(ah, ATH_LED_PIN, 1);
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ath9k_hw_cfg_gpio_input(ah, ATH_LED_PIN);
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/* Disable interrupts */
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ath9k_hw_set_interrupts(ah, 0);
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ath_draintxq(sc, false); /* clear pending tx frames */
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ath_stoprecv(sc); /* turn off frame recv */
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ath_flushrecv(sc); /* flush recv queue */
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spin_lock_bh(&sc->sc_resetlock);
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if (!ath9k_hw_reset(ah, ah->ah_curchan,
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sc->sc_ht_info.tx_chan_width,
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sc->sc_tx_chainmask,
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sc->sc_rx_chainmask,
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sc->sc_ht_extprotspacing,
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false, &status)) {
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DPRINTF(sc, ATH_DBG_FATAL,
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"%s: unable to reset channel %u (%uMhz) "
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"flags 0x%x hal status %u\n", __func__,
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ath9k_hw_mhz2ieee(ah,
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ah->ah_curchan->channel,
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ah->ah_curchan->channelFlags),
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ah->ah_curchan->channel,
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ah->ah_curchan->channelFlags, status);
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}
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spin_unlock_bh(&sc->sc_resetlock);
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ath9k_hw_phy_disable(ah);
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ath9k_hw_setpower(ah, ATH9K_PM_FULL_SLEEP);
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}
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static bool ath_is_rfkill_set(struct ath_softc *sc)
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{
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struct ath_hal *ah = sc->sc_ah;
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return ath9k_hw_gpio_get(ah, ah->ah_rfkill_gpio) ==
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ah->ah_rfkill_polarity;
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}
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/* h/w rfkill poll function */
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static void ath_rfkill_poll(struct work_struct *work)
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{
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struct ath_softc *sc = container_of(work, struct ath_softc,
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rf_kill.rfkill_poll.work);
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bool radio_on;
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if (sc->sc_flags & SC_OP_INVALID)
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return;
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radio_on = !ath_is_rfkill_set(sc);
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/*
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* enable/disable radio only when there is a
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* state change in RF switch
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*/
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if (radio_on == !!(sc->sc_flags & SC_OP_RFKILL_HW_BLOCKED)) {
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enum rfkill_state state;
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if (sc->sc_flags & SC_OP_RFKILL_SW_BLOCKED) {
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state = radio_on ? RFKILL_STATE_SOFT_BLOCKED
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: RFKILL_STATE_HARD_BLOCKED;
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} else if (radio_on) {
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ath_radio_enable(sc);
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state = RFKILL_STATE_UNBLOCKED;
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} else {
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ath_radio_disable(sc);
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state = RFKILL_STATE_HARD_BLOCKED;
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}
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if (state == RFKILL_STATE_HARD_BLOCKED)
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sc->sc_flags |= SC_OP_RFKILL_HW_BLOCKED;
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else
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sc->sc_flags &= ~SC_OP_RFKILL_HW_BLOCKED;
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rfkill_force_state(sc->rf_kill.rfkill, state);
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}
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queue_delayed_work(sc->hw->workqueue, &sc->rf_kill.rfkill_poll,
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msecs_to_jiffies(ATH_RFKILL_POLL_INTERVAL));
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}
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/* s/w rfkill handler */
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static int ath_sw_toggle_radio(void *data, enum rfkill_state state)
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{
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struct ath_softc *sc = data;
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switch (state) {
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case RFKILL_STATE_SOFT_BLOCKED:
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if (!(sc->sc_flags & (SC_OP_RFKILL_HW_BLOCKED |
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SC_OP_RFKILL_SW_BLOCKED)))
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ath_radio_disable(sc);
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sc->sc_flags |= SC_OP_RFKILL_SW_BLOCKED;
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return 0;
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case RFKILL_STATE_UNBLOCKED:
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if ((sc->sc_flags & SC_OP_RFKILL_SW_BLOCKED)) {
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sc->sc_flags &= ~SC_OP_RFKILL_SW_BLOCKED;
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if (sc->sc_flags & SC_OP_RFKILL_HW_BLOCKED) {
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DPRINTF(sc, ATH_DBG_FATAL, "Can't turn on the"
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"radio as it is disabled by h/w \n");
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return -EPERM;
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}
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ath_radio_enable(sc);
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}
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return 0;
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default:
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return -EINVAL;
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}
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}
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/* Init s/w rfkill */
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static int ath_init_sw_rfkill(struct ath_softc *sc)
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{
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sc->rf_kill.rfkill = rfkill_allocate(wiphy_dev(sc->hw->wiphy),
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RFKILL_TYPE_WLAN);
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if (!sc->rf_kill.rfkill) {
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DPRINTF(sc, ATH_DBG_FATAL, "Failed to allocate rfkill\n");
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return -ENOMEM;
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}
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snprintf(sc->rf_kill.rfkill_name, sizeof(sc->rf_kill.rfkill_name),
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"ath9k-%s:rfkill", wiphy_name(sc->hw->wiphy));
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sc->rf_kill.rfkill->name = sc->rf_kill.rfkill_name;
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sc->rf_kill.rfkill->data = sc;
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sc->rf_kill.rfkill->toggle_radio = ath_sw_toggle_radio;
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sc->rf_kill.rfkill->state = RFKILL_STATE_UNBLOCKED;
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sc->rf_kill.rfkill->user_claim_unsupported = 1;
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return 0;
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}
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/* Deinitialize rfkill */
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static void ath_deinit_rfkill(struct ath_softc *sc)
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{
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if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
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cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll);
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if (sc->sc_flags & SC_OP_RFKILL_REGISTERED) {
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rfkill_unregister(sc->rf_kill.rfkill);
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sc->sc_flags &= ~SC_OP_RFKILL_REGISTERED;
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sc->rf_kill.rfkill = NULL;
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}
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}
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#endif /* CONFIG_RFKILL */
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static int ath_detach(struct ath_softc *sc)
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{
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struct ieee80211_hw *hw = sc->hw;
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@ -681,6 +884,11 @@ static int ath_detach(struct ath_softc *sc)
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/* Deinit LED control */
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ath_deinit_leds(sc);
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#ifdef CONFIG_RFKILL
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/* deinit rfkill */
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ath_deinit_rfkill(sc);
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#endif
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/* Unregister hw */
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ieee80211_unregister_hw(hw);
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@ -777,6 +985,16 @@ static int ath_attach(u16 devid,
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/* Initialize LED control */
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ath_init_leds(sc);
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#ifdef CONFIG_RFKILL
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/* Initialze h/w Rfkill */
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if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
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INIT_DELAYED_WORK(&sc->rf_kill.rfkill_poll, ath_rfkill_poll);
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/* Initialize s/w rfkill */
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if (ath_init_sw_rfkill(sc))
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goto detach;
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#endif
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/* initialize tx/rx engine */
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error = ath_tx_init(sc, ATH_TXBUF);
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@ -822,6 +1040,33 @@ static int ath9k_start(struct ieee80211_hw *hw)
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return error;
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}
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#ifdef CONFIG_RFKILL
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/* Start rfkill polling */
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if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
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queue_delayed_work(sc->hw->workqueue,
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&sc->rf_kill.rfkill_poll, 0);
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if (!(sc->sc_flags & SC_OP_RFKILL_REGISTERED)) {
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if (rfkill_register(sc->rf_kill.rfkill)) {
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DPRINTF(sc, ATH_DBG_FATAL,
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"Unable to register rfkill\n");
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rfkill_free(sc->rf_kill.rfkill);
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/* Deinitialize the device */
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if (sc->pdev->irq)
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free_irq(sc->pdev->irq, sc);
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ath_detach(sc);
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||||
pci_iounmap(sc->pdev, sc->mem);
|
||||
pci_release_region(sc->pdev, 0);
|
||||
pci_disable_device(sc->pdev);
|
||||
ieee80211_free_hw(hw);
|
||||
return -EIO;
|
||||
} else {
|
||||
sc->sc_flags |= SC_OP_RFKILL_REGISTERED;
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
ieee80211_wake_queues(hw);
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -883,6 +1128,11 @@ static void ath9k_stop(struct ieee80211_hw *hw)
|
|||
"%s: Device is no longer present\n", __func__);
|
||||
|
||||
ieee80211_stop_queues(hw);
|
||||
|
||||
#ifdef CONFIG_RFKILL
|
||||
if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
|
||||
cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll);
|
||||
#endif
|
||||
}
|
||||
|
||||
static int ath9k_add_interface(struct ieee80211_hw *hw,
|
||||
|
|
@ -1554,6 +1804,12 @@ static int ath_pci_suspend(struct pci_dev *pdev, pm_message_t state)
|
|||
struct ath_softc *sc = hw->priv;
|
||||
|
||||
ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
|
||||
|
||||
#ifdef CONFIG_RFKILL
|
||||
if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
|
||||
cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll);
|
||||
#endif
|
||||
|
||||
pci_save_state(pdev);
|
||||
pci_disable_device(pdev);
|
||||
pci_set_power_state(pdev, 3);
|
||||
|
|
@ -1586,6 +1842,16 @@ static int ath_pci_resume(struct pci_dev *pdev)
|
|||
AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
|
||||
ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
|
||||
|
||||
#ifdef CONFIG_RFKILL
|
||||
/*
|
||||
* check the h/w rfkill state on resume
|
||||
* and start the rfkill poll timer
|
||||
*/
|
||||
if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
|
||||
queue_delayed_work(sc->hw->workqueue,
|
||||
&sc->rf_kill.rfkill_poll, 0);
|
||||
#endif
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue