Reset functions and helpers
\*****************************/
-#include <linux/pci.h>
+#include <linux/pci.h> /* To determine if a card is pci-e */
+#include <linux/bitops.h> /* For get_bitmask_order */
#include "ath5k.h"
#include "reg.h"
#include "base.h"
* @ah: the &struct ath5k_hw
* @channel: the currently set channel upon reset
*
- * Write the OFDM timings for the AR5212 upon reset. This is a helper for
- * ath5k_hw_reset(). This seems to tune the PLL a specified frequency
- * depending on the bandwidth of the channel.
+ * Write the delta slope coefficient (used on pilot tracking ?) for OFDM
+ * operation on the AR5212 upon reset. This is a helper for ath5k_hw_reset().
*
+ * Since delta slope is floating point we split it on its exponent and
+ * mantissa and provide these values on hw.
+ *
+ * For more infos i think this patent is related
+ * http://www.freepatentsonline.com/7184495.html
*/
static inline int ath5k_hw_write_ofdm_timings(struct ath5k_hw *ah,
struct ieee80211_channel *channel)
!(channel->hw_value & CHANNEL_OFDM))
BUG();
- /* Seems there are two PLLs, one for baseband sampling and one
- * for tuning. Tuning basebands are 40 MHz or 80MHz when in
- * turbo. */
- clock = channel->hw_value & CHANNEL_TURBO ? 80 : 40;
- coef_scaled = ((5 * (clock << 24)) / 2) /
- channel->center_freq;
+ /* Get coefficient
+ * ALGO: coef = (5 * clock * carrier_freq) / 2)
+ * we scale coef by shifting clock value by 24 for
+ * better precision since we use integers */
+ /* TODO: Half/quarter rate */
+ clock = ath5k_hw_htoclock(1, channel->hw_value & CHANNEL_TURBO);
- for (coef_exp = 31; coef_exp > 0; coef_exp--)
- if ((coef_scaled >> coef_exp) & 0x1)
- break;
+ coef_scaled = ((5 * (clock << 24)) / 2) / channel->center_freq;
+
+ /* Get exponent
+ * ALGO: coef_exp = 14 - highest set bit position */
+ coef_exp = get_bitmask_order(coef_scaled);
+ /* Doesn't make sense if it's zero*/
if (!coef_exp)
return -EINVAL;
+ /* Note: we've shifted coef_scaled by 24 */
coef_exp = 14 - (coef_exp - 24);
+
+
+ /* Get mantissa (significant digits)
+ * ALGO: coef_mant = floor(coef_scaled* 2^coef_exp+0.5) */
coef_man = coef_scaled +
(1 << (24 - coef_exp - 1));
+
+ /* Calculate delta slope coefficient exponent
+ * and mantissa (remove scaling) and set them on hw */
ds_coef_man = coef_man >> (24 - coef_exp);
ds_coef_exp = coef_exp - 16;
{ 0, 1, 1, 1, 4, 4, 6, 6, 8, 8, 8, 8 };
/**
- * ath5k_hw_write_rate_duration - set rate duration during hw resets
+ * ath5k_hw_write_rate_duration - fill rate code to duration table
*
* @ah: the &struct ath5k_hw
* @mode: one of enum ath5k_driver_mode
*
- * Write the rate duration table upon hw reset. This is a helper for
- * ath5k_hw_reset(). It seems all this is doing is setting an ACK timeout for
- * the hardware for the current mode for each rate. The rates which are capable
- * of short preamble (802.11b rates 2Mbps, 5.5Mbps, and 11Mbps) have another
- * register for the short preamble ACK timeout calculation.
+ * Write the rate code to duration table upon hw reset. This is a helper for
+ * ath5k_hw_reset(). It seems all this is doing is setting an ACK timeout on
+ * the hardware, based on current mode, for each rate. The rates which are
+ * capable of short preamble (802.11b rates 2Mbps, 5.5Mbps, and 11Mbps) have
+ * different rate code so we write their value twice (one for long preample
+ * and one for short).
+ *
+ * Note: Band doesn't matter here, if we set the values for OFDM it works
+ * on both a and g modes. So all we have to do is set values for all g rates
+ * that include all OFDM and CCK rates. If we operate in turbo or xr/half/
+ * quarter rate mode, we need to use another set of bitrates (that's why we
+ * need the mode parameter) but we don't handle these proprietary modes yet.
*/
static inline void ath5k_hw_write_rate_duration(struct ath5k_hw *ah,
unsigned int mode)
}
/*
- * Bring up MAC + PHY Chips
+ * Bring up MAC + PHY Chips and program PLL
+ * TODO: Half/Quarter rate support
*/
int ath5k_hw_nic_wakeup(struct ath5k_hw *ah, int flags, bool initial)
{
}
} else if (flags & CHANNEL_5GHZ) {
mode |= AR5K_PHY_MODE_FREQ_5GHZ;
- clock |= AR5K_PHY_PLL_40MHZ;
+
+ if (ah->ah_radio == AR5K_RF5413)
+ clock |= AR5K_PHY_PLL_40MHZ_5413;
+ else
+ clock |= AR5K_PHY_PLL_40MHZ;
if (flags & CHANNEL_OFDM)
mode |= AR5K_PHY_MODE_MOD_OFDM;
}
if (ah->ah_version != AR5K_AR5210) {
- /* ...set the PHY operating mode */
- ath5k_hw_reg_write(ah, clock, AR5K_PHY_PLL);
- udelay(300);
+ /* ...update PLL if needed */
+ if (ath5k_hw_reg_read(ah, AR5K_PHY_PLL) != clock) {
+ ath5k_hw_reg_write(ah, clock, AR5K_PHY_PLL);
+ udelay(300);
+ }
+
+ /* ...set the PHY operating mode */
ath5k_hw_reg_write(ah, mode, AR5K_PHY_MODE);
ath5k_hw_reg_write(ah, turbo, AR5K_PHY_TURBO);
}
return 0;
}
+/*
+ * If there is an external 32KHz crystal available, use it
+ * as ref. clock instead of 32/40MHz clock and baseband clocks
+ * to save power during sleep or restore normal 32/40MHz
+ * operation.
+ *
+ * XXX: When operating on 32KHz certain PHY registers (27 - 31,
+ * 123 - 127) require delay on access.
+ */
+static void ath5k_hw_set_sleep_clock(struct ath5k_hw *ah, bool enable)
+{
+ struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
+ u32 scal, spending, usec32;
+
+ /* Only set 32KHz settings if we have an external
+ * 32KHz crystal present */
+ if ((AR5K_EEPROM_HAS32KHZCRYSTAL(ee->ee_misc1) ||
+ AR5K_EEPROM_HAS32KHZCRYSTAL_OLD(ee->ee_misc1)) &&
+ enable) {
+
+ /* 1 usec/cycle */
+ AR5K_REG_WRITE_BITS(ah, AR5K_USEC_5211, AR5K_USEC_32, 1);
+ /* Set up tsf increment on each cycle */
+ AR5K_REG_WRITE_BITS(ah, AR5K_TSF_PARM, AR5K_TSF_PARM_INC, 61);
+
+ /* Set baseband sleep control registers
+ * and sleep control rate */
+ ath5k_hw_reg_write(ah, 0x1f, AR5K_PHY_SCR);
+
+ if ((ah->ah_radio == AR5K_RF5112) ||
+ (ah->ah_radio == AR5K_RF5413) ||
+ (ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4)))
+ spending = 0x14;
+ else
+ spending = 0x18;
+ ath5k_hw_reg_write(ah, spending, AR5K_PHY_SPENDING);
+
+ if ((ah->ah_radio == AR5K_RF5112) ||
+ (ah->ah_radio == AR5K_RF5413) ||
+ (ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4))) {
+ ath5k_hw_reg_write(ah, 0x26, AR5K_PHY_SLMT);
+ ath5k_hw_reg_write(ah, 0x0d, AR5K_PHY_SCAL);
+ ath5k_hw_reg_write(ah, 0x07, AR5K_PHY_SCLOCK);
+ ath5k_hw_reg_write(ah, 0x3f, AR5K_PHY_SDELAY);
+ AR5K_REG_WRITE_BITS(ah, AR5K_PCICFG,
+ AR5K_PCICFG_SLEEP_CLOCK_RATE, 0x02);
+ } else {
+ ath5k_hw_reg_write(ah, 0x0a, AR5K_PHY_SLMT);
+ ath5k_hw_reg_write(ah, 0x0c, AR5K_PHY_SCAL);
+ ath5k_hw_reg_write(ah, 0x03, AR5K_PHY_SCLOCK);
+ ath5k_hw_reg_write(ah, 0x20, AR5K_PHY_SDELAY);
+ AR5K_REG_WRITE_BITS(ah, AR5K_PCICFG,
+ AR5K_PCICFG_SLEEP_CLOCK_RATE, 0x03);
+ }
+
+ /* Enable sleep clock operation */
+ AR5K_REG_ENABLE_BITS(ah, AR5K_PCICFG,
+ AR5K_PCICFG_SLEEP_CLOCK_EN);
+
+ } else {
+
+ /* Disable sleep clock operation and
+ * restore default parameters */
+ AR5K_REG_DISABLE_BITS(ah, AR5K_PCICFG,
+ AR5K_PCICFG_SLEEP_CLOCK_EN);
+
+ AR5K_REG_WRITE_BITS(ah, AR5K_PCICFG,
+ AR5K_PCICFG_SLEEP_CLOCK_RATE, 0);
+
+ ath5k_hw_reg_write(ah, 0x1f, AR5K_PHY_SCR);
+ ath5k_hw_reg_write(ah, AR5K_PHY_SLMT_32MHZ, AR5K_PHY_SLMT);
+
+ if (ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4))
+ scal = AR5K_PHY_SCAL_32MHZ_2417;
+ else if (ath5k_eeprom_is_hb63(ah))
+ scal = AR5K_PHY_SCAL_32MHZ_HB63;
+ else
+ scal = AR5K_PHY_SCAL_32MHZ;
+ ath5k_hw_reg_write(ah, scal, AR5K_PHY_SCAL);
+
+ ath5k_hw_reg_write(ah, AR5K_PHY_SCLOCK_32MHZ, AR5K_PHY_SCLOCK);
+ ath5k_hw_reg_write(ah, AR5K_PHY_SDELAY_32MHZ, AR5K_PHY_SDELAY);
+
+ if ((ah->ah_radio == AR5K_RF5112) ||
+ (ah->ah_radio == AR5K_RF5413) ||
+ (ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4)))
+ spending = 0x14;
+ else
+ spending = 0x18;
+ ath5k_hw_reg_write(ah, spending, AR5K_PHY_SPENDING);
+
+ if ((ah->ah_radio == AR5K_RF5112) ||
+ (ah->ah_radio == AR5K_RF5413))
+ usec32 = 39;
+ else
+ usec32 = 31;
+ AR5K_REG_WRITE_BITS(ah, AR5K_USEC_5211, AR5K_USEC_32, usec32);
+
+ AR5K_REG_WRITE_BITS(ah, AR5K_TSF_PARM, AR5K_TSF_PARM_INC, 1);
+ }
+ return;
+}
+
+static bool ath5k_hw_chan_has_spur_noise(struct ath5k_hw *ah,
+ struct ieee80211_channel *channel)
+{
+ u8 refclk_freq;
+
+ if ((ah->ah_radio == AR5K_RF5112) ||
+ (ah->ah_radio == AR5K_RF5413) ||
+ (ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4)))
+ refclk_freq = 40;
+ else
+ refclk_freq = 32;
+
+ if ((channel->center_freq % refclk_freq != 0) &&
+ ((channel->center_freq % refclk_freq < 10) ||
+ (channel->center_freq % refclk_freq > 22)))
+ return true;
+ else
+ return false;
+}
+
+/* TODO: Half/Quarter rate */
+static void ath5k_hw_tweak_initval_settings(struct ath5k_hw *ah,
+ struct ieee80211_channel *channel)
+{
+ if (ah->ah_version == AR5K_AR5212 &&
+ ah->ah_phy_revision >= AR5K_SREV_PHY_5212A) {
+
+ /* Setup ADC control */
+ ath5k_hw_reg_write(ah,
+ (AR5K_REG_SM(2,
+ AR5K_PHY_ADC_CTL_INBUFGAIN_OFF) |
+ AR5K_REG_SM(2,
+ AR5K_PHY_ADC_CTL_INBUFGAIN_ON) |
+ AR5K_PHY_ADC_CTL_PWD_DAC_OFF |
+ AR5K_PHY_ADC_CTL_PWD_ADC_OFF),
+ AR5K_PHY_ADC_CTL);
+
+
+
+ /* Disable barker RSSI threshold */
+ AR5K_REG_DISABLE_BITS(ah, AR5K_PHY_DAG_CCK_CTL,
+ AR5K_PHY_DAG_CCK_CTL_EN_RSSI_THR);
+
+ AR5K_REG_WRITE_BITS(ah, AR5K_PHY_DAG_CCK_CTL,
+ AR5K_PHY_DAG_CCK_CTL_RSSI_THR, 2);
+
+ /* Set the mute mask */
+ ath5k_hw_reg_write(ah, 0x0000000f, AR5K_SEQ_MASK);
+ }
+
+ /* Clear PHY_BLUETOOTH to allow RX_CLEAR line debug */
+ if (ah->ah_phy_revision >= AR5K_SREV_PHY_5212B)
+ ath5k_hw_reg_write(ah, 0, AR5K_PHY_BLUETOOTH);
+
+ /* Enable DCU double buffering */
+ if (ah->ah_phy_revision > AR5K_SREV_PHY_5212B)
+ AR5K_REG_DISABLE_BITS(ah, AR5K_TXCFG,
+ AR5K_TXCFG_DCU_DBL_BUF_DIS);
+
+ /* Set DAC/ADC delays */
+ if (ah->ah_version == AR5K_AR5212) {
+ u32 scal;
+ if (ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4))
+ scal = AR5K_PHY_SCAL_32MHZ_2417;
+ else if (ath5k_eeprom_is_hb63(ah))
+ scal = AR5K_PHY_SCAL_32MHZ_HB63;
+ else
+ scal = AR5K_PHY_SCAL_32MHZ;
+ ath5k_hw_reg_write(ah, scal, AR5K_PHY_SCAL);
+ }
+
+ /* Set fast ADC */
+ if ((ah->ah_radio == AR5K_RF5413) ||
+ (ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4))) {
+ u32 fast_adc = true;
+
+ if (channel->center_freq == 2462 ||
+ channel->center_freq == 2467)
+ fast_adc = 0;
+
+ /* Only update if needed */
+ if (ath5k_hw_reg_read(ah, AR5K_PHY_FAST_ADC) != fast_adc)
+ ath5k_hw_reg_write(ah, fast_adc,
+ AR5K_PHY_FAST_ADC);
+ }
+
+ /* Fix for first revision of the RF5112 RF chipset */
+ if (ah->ah_radio == AR5K_RF5112 &&
+ ah->ah_radio_5ghz_revision <
+ AR5K_SREV_RAD_5112A) {
+ u32 data;
+ ath5k_hw_reg_write(ah, AR5K_PHY_CCKTXCTL_WORLD,
+ AR5K_PHY_CCKTXCTL);
+ if (channel->hw_value & CHANNEL_5GHZ)
+ data = 0xffb81020;
+ else
+ data = 0xffb80d20;
+ ath5k_hw_reg_write(ah, data, AR5K_PHY_FRAME_CTL);
+ }
+
+ if (ah->ah_mac_srev < AR5K_SREV_AR5211) {
+ u32 usec_reg;
+ /* 5311 has different tx/rx latency masks
+ * from 5211, since we deal 5311 the same
+ * as 5211 when setting initvals, shift
+ * values here to their proper locations */
+ usec_reg = ath5k_hw_reg_read(ah, AR5K_USEC_5211);
+ ath5k_hw_reg_write(ah, usec_reg & (AR5K_USEC_1 |
+ AR5K_USEC_32 |
+ AR5K_USEC_TX_LATENCY_5211 |
+ AR5K_REG_SM(29,
+ AR5K_USEC_RX_LATENCY_5210)),
+ AR5K_USEC_5211);
+ /* Clear QCU/DCU clock gating register */
+ ath5k_hw_reg_write(ah, 0, AR5K_QCUDCU_CLKGT);
+ /* Set DAC/ADC delays */
+ ath5k_hw_reg_write(ah, 0x08, AR5K_PHY_SCAL);
+ /* Enable PCU FIFO corruption ECO */
+ AR5K_REG_ENABLE_BITS(ah, AR5K_DIAG_SW_5211,
+ AR5K_DIAG_SW_ECO_ENABLE);
+ }
+}
+
+static void ath5k_hw_commit_eeprom_settings(struct ath5k_hw *ah,
+ struct ieee80211_channel *channel, u8 *ant, u8 ee_mode)
+{
+ struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
+
+ /* Set CCK to OFDM power delta */
+ if (ah->ah_phy_revision >= AR5K_SREV_PHY_5212A) {
+ int16_t cck_ofdm_pwr_delta;
+
+ /* Adjust power delta for channel 14 */
+ if (channel->center_freq == 2484)
+ cck_ofdm_pwr_delta =
+ ((ee->ee_cck_ofdm_power_delta -
+ ee->ee_scaled_cck_delta) * 2) / 10;
+ else
+ cck_ofdm_pwr_delta =
+ (ee->ee_cck_ofdm_power_delta * 2) / 10;
+
+ if (channel->hw_value == CHANNEL_G)
+ ath5k_hw_reg_write(ah,
+ AR5K_REG_SM((ee->ee_cck_ofdm_power_delta * -1),
+ AR5K_PHY_TX_PWR_ADJ_CCK_GAIN_DELTA) |
+ AR5K_REG_SM((cck_ofdm_pwr_delta * -1),
+ AR5K_PHY_TX_PWR_ADJ_CCK_PCDAC_INDEX),
+ AR5K_PHY_TX_PWR_ADJ);
+ else
+ ath5k_hw_reg_write(ah, 0, AR5K_PHY_TX_PWR_ADJ);
+ }
+
+ /* Set antenna idle switch table */
+ AR5K_REG_WRITE_BITS(ah, AR5K_PHY_ANT_CTL,
+ AR5K_PHY_ANT_CTL_SWTABLE_IDLE,
+ (ah->ah_antenna[ee_mode][0] |
+ AR5K_PHY_ANT_CTL_TXRX_EN));
+
+ /* Set antenna switch table */
+ ath5k_hw_reg_write(ah, ah->ah_antenna[ee_mode][ant[0]],
+ AR5K_PHY_ANT_SWITCH_TABLE_0);
+ ath5k_hw_reg_write(ah, ah->ah_antenna[ee_mode][ant[1]],
+ AR5K_PHY_ANT_SWITCH_TABLE_1);
+
+ /* Noise floor threshold */
+ ath5k_hw_reg_write(ah,
+ AR5K_PHY_NF_SVAL(ee->ee_noise_floor_thr[ee_mode]),
+ AR5K_PHY_NFTHRES);
+
+ if ((channel->hw_value & CHANNEL_TURBO) &&
+ (ah->ah_ee_version >= AR5K_EEPROM_VERSION_5_0)) {
+ /* Switch settling time (Turbo) */
+ AR5K_REG_WRITE_BITS(ah, AR5K_PHY_SETTLING,
+ AR5K_PHY_SETTLING_SWITCH,
+ ee->ee_switch_settling_turbo[ee_mode]);
+
+ /* Tx/Rx attenuation (Turbo) */
+ AR5K_REG_WRITE_BITS(ah, AR5K_PHY_GAIN,
+ AR5K_PHY_GAIN_TXRX_ATTEN,
+ ee->ee_atn_tx_rx_turbo[ee_mode]);
+
+ /* ADC/PGA desired size (Turbo) */
+ AR5K_REG_WRITE_BITS(ah, AR5K_PHY_DESIRED_SIZE,
+ AR5K_PHY_DESIRED_SIZE_ADC,
+ ee->ee_adc_desired_size_turbo[ee_mode]);
+
+ AR5K_REG_WRITE_BITS(ah, AR5K_PHY_DESIRED_SIZE,
+ AR5K_PHY_DESIRED_SIZE_PGA,
+ ee->ee_pga_desired_size_turbo[ee_mode]);
+
+ /* Tx/Rx margin (Turbo) */
+ AR5K_REG_WRITE_BITS(ah, AR5K_PHY_GAIN_2GHZ,
+ AR5K_PHY_GAIN_2GHZ_MARGIN_TXRX,
+ ee->ee_margin_tx_rx_turbo[ee_mode]);
+
+ } else {
+ /* Switch settling time */
+ AR5K_REG_WRITE_BITS(ah, AR5K_PHY_SETTLING,
+ AR5K_PHY_SETTLING_SWITCH,
+ ee->ee_switch_settling[ee_mode]);
+
+ /* Tx/Rx attenuation */
+ AR5K_REG_WRITE_BITS(ah, AR5K_PHY_GAIN,
+ AR5K_PHY_GAIN_TXRX_ATTEN,
+ ee->ee_atn_tx_rx[ee_mode]);
+
+ /* ADC/PGA desired size */
+ AR5K_REG_WRITE_BITS(ah, AR5K_PHY_DESIRED_SIZE,
+ AR5K_PHY_DESIRED_SIZE_ADC,
+ ee->ee_adc_desired_size[ee_mode]);
+
+ AR5K_REG_WRITE_BITS(ah, AR5K_PHY_DESIRED_SIZE,
+ AR5K_PHY_DESIRED_SIZE_PGA,
+ ee->ee_pga_desired_size[ee_mode]);
+
+ /* Tx/Rx margin */
+ if (ah->ah_ee_version >= AR5K_EEPROM_VERSION_4_1)
+ AR5K_REG_WRITE_BITS(ah, AR5K_PHY_GAIN_2GHZ,
+ AR5K_PHY_GAIN_2GHZ_MARGIN_TXRX,
+ ee->ee_margin_tx_rx[ee_mode]);
+ }
+
+ /* XPA delays */
+ ath5k_hw_reg_write(ah,
+ (ee->ee_tx_end2xpa_disable[ee_mode] << 24) |
+ (ee->ee_tx_end2xpa_disable[ee_mode] << 16) |
+ (ee->ee_tx_frm2xpa_enable[ee_mode] << 8) |
+ (ee->ee_tx_frm2xpa_enable[ee_mode]), AR5K_PHY_RF_CTL4);
+
+ /* XLNA delay */
+ AR5K_REG_WRITE_BITS(ah, AR5K_PHY_RF_CTL3,
+ AR5K_PHY_RF_CTL3_TXE2XLNA_ON,
+ ee->ee_tx_end2xlna_enable[ee_mode]);
+
+ /* Thresh64 (ANI) */
+ AR5K_REG_WRITE_BITS(ah, AR5K_PHY_NF,
+ AR5K_PHY_NF_THRESH62,
+ ee->ee_thr_62[ee_mode]);
+
+
+ /* False detect backoff for channels
+ * that have spur noise. Write the new
+ * cyclic power RSSI threshold. */
+ if (ath5k_hw_chan_has_spur_noise(ah, channel))
+ AR5K_REG_WRITE_BITS(ah, AR5K_PHY_OFDM_SELFCORR,
+ AR5K_PHY_OFDM_SELFCORR_CYPWR_THR1,
+ AR5K_INIT_CYCRSSI_THR1 +
+ ee->ee_false_detect[ee_mode]);
+ else
+ AR5K_REG_WRITE_BITS(ah, AR5K_PHY_OFDM_SELFCORR,
+ AR5K_PHY_OFDM_SELFCORR_CYPWR_THR1,
+ AR5K_INIT_CYCRSSI_THR1);
+
+ /* I/Q correction
+ * TODO: Per channel i/q infos ? */
+ AR5K_REG_ENABLE_BITS(ah, AR5K_PHY_IQ,
+ AR5K_PHY_IQ_CORR_ENABLE |
+ (ee->ee_i_cal[ee_mode] << AR5K_PHY_IQ_CORR_Q_I_COFF_S) |
+ ee->ee_q_cal[ee_mode]);
+
+ /* Heavy clipping -disable for now */
+ if (ah->ah_ee_version >= AR5K_EEPROM_VERSION_5_1)
+ ath5k_hw_reg_write(ah, 0, AR5K_PHY_HEAVY_CLIP_ENABLE);
+
+ return;
+}
+
/*
* Main reset function
*/
int ath5k_hw_reset(struct ath5k_hw *ah, enum nl80211_iftype op_mode,
struct ieee80211_channel *channel, bool change_channel)
{
- struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
- struct pci_dev *pdev = ah->ah_sc->pdev;
- u32 data, s_seq, s_ant, s_led[3], dma_size;
- unsigned int i, mode, freq, ee_mode, ant[2];
- int ret;
+ u32 s_seq[10], s_ant, s_led[3], staid1_flags, tsf_up, tsf_lo;
+ u32 phy_tst1;
+ u8 mode, freq, ee_mode, ant[2];
+ int i, ret;
ATH5K_TRACE(ah->ah_sc);
- s_seq = 0;
s_ant = 0;
ee_mode = 0;
+ staid1_flags = 0;
+ tsf_up = 0;
+ tsf_lo = 0;
freq = 0;
mode = 0;
* Save some registers before a reset
*/
/*DCU/Antenna selection not available on 5210*/
- if (ah->ah_version != AR5K_AR5210) {
- if (change_channel) {
- /* Seq number for queue 0 -do this for all queues ? */
- s_seq = ath5k_hw_reg_read(ah,
- AR5K_QUEUE_DFS_SEQNUM(0));
- /*Default antenna*/
- s_ant = ath5k_hw_reg_read(ah, AR5K_DEFAULT_ANTENNA);
- }
- }
-
- /*GPIOs*/
- s_led[0] = ath5k_hw_reg_read(ah, AR5K_PCICFG) & AR5K_PCICFG_LEDSTATE;
- s_led[1] = ath5k_hw_reg_read(ah, AR5K_GPIOCR);
- s_led[2] = ath5k_hw_reg_read(ah, AR5K_GPIODO);
-
-
- /*Wakeup the device*/
- ret = ath5k_hw_nic_wakeup(ah, channel->hw_value, false);
- if (ret)
- return ret;
-
- /*
- * Initialize operating mode
- */
- ah->ah_op_mode = op_mode;
-
- /*
- * 5111/5112 Settings
- * 5210 only comes with RF5110
- */
if (ah->ah_version != AR5K_AR5210) {
switch (channel->hw_value & CHANNEL_MODES) {
freq = AR5K_INI_RFGAIN_5GHZ;
ee_mode = AR5K_EEPROM_MODE_11A;
break;
- /*Is this ok on 5211 too ?*/
case CHANNEL_TG:
+ if (ah->ah_version == AR5K_AR5211) {
+ ATH5K_ERR(ah->ah_sc,
+ "TurboG mode not available on 5211");
+ return -EINVAL;
+ }
mode = AR5K_MODE_11G_TURBO;
freq = AR5K_INI_RFGAIN_2GHZ;
ee_mode = AR5K_EEPROM_MODE_11G;
return -EINVAL;
}
+ if (change_channel) {
+ /*
+ * Save frame sequence count
+ * For revs. after Oahu, only save
+ * seq num for DCU 0 (Global seq num)
+ */
+ if (ah->ah_mac_srev < AR5K_SREV_AR5211) {
+
+ for (i = 0; i < 10; i++)
+ s_seq[i] = ath5k_hw_reg_read(ah,
+ AR5K_QUEUE_DCU_SEQNUM(i));
+
+ } else {
+ s_seq[0] = ath5k_hw_reg_read(ah,
+ AR5K_QUEUE_DCU_SEQNUM(0));
+ }
+
+ /* TSF accelerates on AR5211 durring reset
+ * As a workaround save it here and restore
+ * it later so that it's back in time after
+ * reset. This way it'll get re-synced on the
+ * next beacon without breaking ad-hoc.
+ *
+ * On AR5212 TSF is almost preserved across a
+ * reset so it stays back in time anyway and
+ * we don't have to save/restore it.
+ *
+ * XXX: Since this breaks power saving we have
+ * to disable power saving until we receive the
+ * next beacon, so we can resync beacon timers */
+ if (ah->ah_version == AR5K_AR5211) {
+ tsf_up = ath5k_hw_reg_read(ah, AR5K_TSF_U32);
+ tsf_lo = ath5k_hw_reg_read(ah, AR5K_TSF_L32);
+ }
+ }
+
+ /* Save default antenna */
+ s_ant = ath5k_hw_reg_read(ah, AR5K_DEFAULT_ANTENNA);
+
+ if (ah->ah_version == AR5K_AR5212) {
+ /* Restore normal 32/40MHz clock operation
+ * to avoid register access delay on certain
+ * PHY registers */
+ ath5k_hw_set_sleep_clock(ah, false);
+
+ /* Since we are going to write rf buffer
+ * check if we have any pending gain_F
+ * optimization settings */
+ if (change_channel && ah->ah_rf_banks != NULL)
+ ath5k_hw_gainf_calibrate(ah);
+ }
}
+ /*GPIOs*/
+ s_led[0] = ath5k_hw_reg_read(ah, AR5K_PCICFG) &
+ AR5K_PCICFG_LEDSTATE;
+ s_led[1] = ath5k_hw_reg_read(ah, AR5K_GPIOCR);
+ s_led[2] = ath5k_hw_reg_read(ah, AR5K_GPIODO);
+
+ /* AR5K_STA_ID1 flags, only preserve antenna
+ * settings and ack/cts rate mode */
+ staid1_flags = ath5k_hw_reg_read(ah, AR5K_STA_ID1) &
+ (AR5K_STA_ID1_DEFAULT_ANTENNA |
+ AR5K_STA_ID1_DESC_ANTENNA |
+ AR5K_STA_ID1_RTS_DEF_ANTENNA |
+ AR5K_STA_ID1_ACKCTS_6MB |
+ AR5K_STA_ID1_BASE_RATE_11B |
+ AR5K_STA_ID1_SELFGEN_DEF_ANT);
+
+ /* Wakeup the device */
+ ret = ath5k_hw_nic_wakeup(ah, channel->hw_value, false);
+ if (ret)
+ return ret;
+
+ /*
+ * Initialize operating mode
+ */
+ ah->ah_op_mode = op_mode;
+
/* PHY access enable */
- ath5k_hw_reg_write(ah, AR5K_PHY_SHIFT_5GHZ, AR5K_PHY(0));
+ if (ah->ah_mac_srev >= AR5K_SREV_AR5211)
+ ath5k_hw_reg_write(ah, AR5K_PHY_SHIFT_5GHZ, AR5K_PHY(0));
+ else
+ ath5k_hw_reg_write(ah, AR5K_PHY_SHIFT_5GHZ | 0x40,
+ AR5K_PHY(0));
+ /* Write initial settings */
ret = ath5k_hw_write_initvals(ah, mode, change_channel);
if (ret)
return ret;
* 5211/5212 Specific
*/
if (ah->ah_version != AR5K_AR5210) {
+
/*
* Write initial RF gain settings
* This should work for both 5111/5112
mdelay(1);
/*
- * Write some more initial register settings for revised chips
+ * Tweak initval settings for revised
+ * chipsets and add some more config
+ * bits
*/
- if (ah->ah_version == AR5K_AR5212 &&
- ah->ah_phy_revision > 0x41) {
- ath5k_hw_reg_write(ah, 0x0002a002, 0x982c);
-
- if (channel->hw_value == CHANNEL_G)
- if (ah->ah_mac_srev < AR5K_SREV_AR2413)
- ath5k_hw_reg_write(ah, 0x00f80d80,
- 0x994c);
- else if (ah->ah_mac_srev < AR5K_SREV_AR5424)
- ath5k_hw_reg_write(ah, 0x00380140,
- 0x994c);
- else if (ah->ah_mac_srev < AR5K_SREV_AR2425)
- ath5k_hw_reg_write(ah, 0x00fc0ec0,
- 0x994c);
- else /* 2425 */
- ath5k_hw_reg_write(ah, 0x00fc0fc0,
- 0x994c);
- else
- ath5k_hw_reg_write(ah, 0x00000000, 0x994c);
-
- /* Got this from legacy-hal */
- AR5K_REG_DISABLE_BITS(ah, 0xa228, 0x200);
-
- AR5K_REG_MASKED_BITS(ah, 0xa228, 0x800, 0xfffe03ff);
-
- /* Just write 0x9b5 ? */
- /* ath5k_hw_reg_write(ah, 0x000009b5, 0xa228); */
- ath5k_hw_reg_write(ah, 0x0000000f, AR5K_SEQ_MASK);
- ath5k_hw_reg_write(ah, 0x00000000, 0xa254);
- ath5k_hw_reg_write(ah, 0x0000000e, AR5K_PHY_SCAL);
- }
-
- /* Fix for first revision of the RF5112 RF chipset */
- if (ah->ah_radio >= AR5K_RF5112 &&
- ah->ah_radio_5ghz_revision <
- AR5K_SREV_RAD_5112A) {
- ath5k_hw_reg_write(ah, AR5K_PHY_CCKTXCTL_WORLD,
- AR5K_PHY_CCKTXCTL);
- if (channel->hw_value & CHANNEL_5GHZ)
- data = 0xffb81020;
- else
- data = 0xffb80d20;
- ath5k_hw_reg_write(ah, data, AR5K_PHY_FRAME_CTL);
- data = 0;
- }
+ ath5k_hw_tweak_initval_settings(ah, channel);
/*
* Set TX power (FIXME)
ath5k_hw_write_rate_duration(ah, mode);
/*
- * Write RF registers
+ * Write RF buffer
*/
ret = ath5k_hw_rfregs_init(ah, channel, mode);
if (ret)
return ret;
- /*
- * Configure additional registers
- */
/* Write OFDM timings on 5212*/
if (ah->ah_version == AR5K_AR5212 &&
AR5K_TXCFG_B_MODE);
}
- /*
- * Set channel and calibrate the PHY
- */
- ret = ath5k_hw_channel(ah, channel);
- if (ret)
- return ret;
-
- /* Set antenna mode */
- AR5K_REG_MASKED_BITS(ah, AR5K_PHY_ANT_CTL,
- ah->ah_antenna[ee_mode][0], 0xfffffc06);
-
/*
* In case a fixed antenna was set as default
* write the same settings on both AR5K_PHY_ANT_SWITCH_TABLE
ant[1] = AR5K_ANT_FIXED_B;
}
- ath5k_hw_reg_write(ah, ah->ah_antenna[ee_mode][ant[0]],
- AR5K_PHY_ANT_SWITCH_TABLE_0);
- ath5k_hw_reg_write(ah, ah->ah_antenna[ee_mode][ant[1]],
- AR5K_PHY_ANT_SWITCH_TABLE_1);
-
/* Commit values from EEPROM */
- if (ah->ah_radio == AR5K_RF5111)
- AR5K_REG_WRITE_BITS(ah, AR5K_PHY_FRAME_CTL,
- AR5K_PHY_FRAME_CTL_TX_CLIP, ee->ee_tx_clip);
-
- ath5k_hw_reg_write(ah,
- AR5K_PHY_NF_SVAL(ee->ee_noise_floor_thr[ee_mode]),
- AR5K_PHY_NFTHRES);
-
- AR5K_REG_MASKED_BITS(ah, AR5K_PHY_SETTLING,
- (ee->ee_switch_settling[ee_mode] << 7) & 0x3f80,
- 0xffffc07f);
- AR5K_REG_MASKED_BITS(ah, AR5K_PHY_GAIN,
- (ee->ee_atn_tx_rx[ee_mode] << 12) & 0x3f000,
- 0xfffc0fff);
- AR5K_REG_MASKED_BITS(ah, AR5K_PHY_DESIRED_SIZE,
- (ee->ee_adc_desired_size[ee_mode] & 0x00ff) |
- ((ee->ee_pga_desired_size[ee_mode] << 8) & 0xff00),
- 0xffff0000);
-
- ath5k_hw_reg_write(ah,
- (ee->ee_tx_end2xpa_disable[ee_mode] << 24) |
- (ee->ee_tx_end2xpa_disable[ee_mode] << 16) |
- (ee->ee_tx_frm2xpa_enable[ee_mode] << 8) |
- (ee->ee_tx_frm2xpa_enable[ee_mode]), AR5K_PHY_RF_CTL4);
-
- AR5K_REG_MASKED_BITS(ah, AR5K_PHY_RF_CTL3,
- ee->ee_tx_end2xlna_enable[ee_mode] << 8, 0xffff00ff);
- AR5K_REG_MASKED_BITS(ah, AR5K_PHY_NF,
- (ee->ee_thr_62[ee_mode] << 12) & 0x7f000, 0xfff80fff);
- AR5K_REG_MASKED_BITS(ah, AR5K_PHY_OFDM_SELFCORR, 4, 0xffffff01);
-
- AR5K_REG_ENABLE_BITS(ah, AR5K_PHY_IQ,
- AR5K_PHY_IQ_CORR_ENABLE |
- (ee->ee_i_cal[ee_mode] << AR5K_PHY_IQ_CORR_Q_I_COFF_S) |
- ee->ee_q_cal[ee_mode]);
-
- if (ah->ah_ee_version >= AR5K_EEPROM_VERSION_4_1)
- AR5K_REG_WRITE_BITS(ah, AR5K_PHY_GAIN_2GHZ,
- AR5K_PHY_GAIN_2GHZ_MARGIN_TXRX,
- ee->ee_margin_tx_rx[ee_mode]);
+ ath5k_hw_commit_eeprom_settings(ah, channel, ant, ee_mode);
} else {
+ /*
+ * For 5210 we do all initialization using
+ * initvals, so we don't have to modify
+ * any settings (5210 also only supports
+ * a/aturbo modes)
+ */
mdelay(1);
/* Disable phy and wait */
ath5k_hw_reg_write(ah, AR5K_PHY_ACT_DISABLE, AR5K_PHY_ACT);
/*
* Restore saved values
*/
+
/*DCU/Antenna selection not available on 5210*/
if (ah->ah_version != AR5K_AR5210) {
- ath5k_hw_reg_write(ah, s_seq, AR5K_QUEUE_DFS_SEQNUM(0));
+
+ if (change_channel) {
+ if (ah->ah_mac_srev < AR5K_SREV_AR5211) {
+ for (i = 0; i < 10; i++)
+ ath5k_hw_reg_write(ah, s_seq[i],
+ AR5K_QUEUE_DCU_SEQNUM(i));
+ } else {
+ ath5k_hw_reg_write(ah, s_seq[0],
+ AR5K_QUEUE_DCU_SEQNUM(0));
+ }
+
+
+ if (ah->ah_version == AR5K_AR5211) {
+ ath5k_hw_reg_write(ah, tsf_up, AR5K_TSF_U32);
+ ath5k_hw_reg_write(ah, tsf_lo, AR5K_TSF_L32);
+ }
+ }
+
ath5k_hw_reg_write(ah, s_ant, AR5K_DEFAULT_ANTENNA);
}
+
+ /* Ledstate */
AR5K_REG_ENABLE_BITS(ah, AR5K_PCICFG, s_led[0]);
+
+ /* Gpio settings */
ath5k_hw_reg_write(ah, s_led[1], AR5K_GPIOCR);
ath5k_hw_reg_write(ah, s_led[2], AR5K_GPIODO);
+ /* Restore sta_id flags and preserve our mac address*/
+ ath5k_hw_reg_write(ah, AR5K_LOW_ID(ah->ah_sta_id),
+ AR5K_STA_ID0);
+ ath5k_hw_reg_write(ah, staid1_flags | AR5K_HIGH_ID(ah->ah_sta_id),
+ AR5K_STA_ID1);
+
+
/*
- * Misc
+ * Configure PCU
*/
+
+ /* Restore bssid and bssid mask */
/* XXX: add ah->aid once mac80211 gives this to us */
ath5k_hw_set_associd(ah, ah->ah_bssid, 0);
+ /* Set PCU config */
ath5k_hw_set_opmode(ah);
- /*PISR/SISR Not available on 5210*/
- if (ah->ah_version != AR5K_AR5210) {
+
+ /* Clear any pending interrupts
+ * PISR/SISR Not available on 5210 */
+ if (ah->ah_version != AR5K_AR5210)
ath5k_hw_reg_write(ah, 0xffffffff, AR5K_PISR);
- /* If we later allow tuning for this, store into sc structure */
- data = AR5K_TUNE_RSSI_THRES |
- AR5K_TUNE_BMISS_THRES << AR5K_RSSI_THR_BMISS_S;
- ath5k_hw_reg_write(ah, data, AR5K_RSSI_THR);
+
+ /* Set RSSI/BRSSI thresholds
+ *
+ * Note: If we decide to set this value
+ * dynamicaly, have in mind that when AR5K_RSSI_THR
+ * register is read it might return 0x40 if we haven't
+ * wrote anything to it plus BMISS RSSI threshold is zeroed.
+ * So doing a save/restore procedure here isn't the right
+ * choice. Instead store it on ath5k_hw */
+ ath5k_hw_reg_write(ah, (AR5K_TUNE_RSSI_THRES |
+ AR5K_TUNE_BMISS_THRES <<
+ AR5K_RSSI_THR_BMISS_S),
+ AR5K_RSSI_THR);
+
+ /* MIC QoS support */
+ if (ah->ah_mac_srev >= AR5K_SREV_AR2413) {
+ ath5k_hw_reg_write(ah, 0x000100aa, AR5K_MIC_QOS_CTL);
+ ath5k_hw_reg_write(ah, 0x00003210, AR5K_MIC_QOS_SEL);
+ }
+
+ /* QoS NOACK Policy */
+ if (ah->ah_version == AR5K_AR5212) {
+ ath5k_hw_reg_write(ah,
+ AR5K_REG_SM(2, AR5K_QOS_NOACK_2BIT_VALUES) |
+ AR5K_REG_SM(5, AR5K_QOS_NOACK_BIT_OFFSET) |
+ AR5K_REG_SM(0, AR5K_QOS_NOACK_BYTE_OFFSET),
+ AR5K_QOS_NOACK);
}
+
/*
- * Set Rx/Tx DMA Configuration
- *
- * Set maximum DMA size (512) except for PCI-E cards since
- * it causes rx overruns and tx errors (tested on 5424 but since
- * rx overruns also occur on 5416/5418 with madwifi we set 128
- * for all PCI-E cards to be safe).
- *
- * In dumps this is 128 for allchips.
- *
- * XXX: need to check 5210 for this
- * TODO: Check out tx triger level, it's always 64 on dumps but I
- * guess we can tweak it and see how it goes ;-)
+ * Configure PHY
*/
- dma_size = (pdev->is_pcie) ? AR5K_DMASIZE_128B : AR5K_DMASIZE_512B;
- if (ah->ah_version != AR5K_AR5210) {
- AR5K_REG_WRITE_BITS(ah, AR5K_TXCFG,
- AR5K_TXCFG_SDMAMR, dma_size);
- AR5K_REG_WRITE_BITS(ah, AR5K_RXCFG,
- AR5K_RXCFG_SDMAMW, dma_size);
- }
+
+ /* Set channel on PHY */
+ ret = ath5k_hw_channel(ah, channel);
+ if (ret)
+ return ret;
/*
* Enable the PHY and wait until completion
+ * This includes BaseBand and Synthesizer
+ * activation.
*/
ath5k_hw_reg_write(ah, AR5K_PHY_ACT_ENABLE, AR5K_PHY_ACT);
/*
* On 5211+ read activation -> rx delay
* and use it.
+ *
+ * TODO: Half/quarter rate support
*/
if (ah->ah_version != AR5K_AR5210) {
- data = ath5k_hw_reg_read(ah, AR5K_PHY_RX_DELAY) &
+ u32 delay;
+ delay = ath5k_hw_reg_read(ah, AR5K_PHY_RX_DELAY) &
AR5K_PHY_RX_DELAY_M;
- data = (channel->hw_value & CHANNEL_CCK) ?
- ((data << 2) / 22) : (data / 10);
+ delay = (channel->hw_value & CHANNEL_CCK) ?
+ ((delay << 2) / 22) : (delay / 10);
- udelay(100 + (2 * data));
- data = 0;
+ udelay(100 + (2 * delay));
} else {
mdelay(1);
}
/*
- * Perform ADC test (?)
+ * Perform ADC test to see if baseband is ready
+ * Set tx hold and check adc test register
*/
- data = ath5k_hw_reg_read(ah, AR5K_PHY_TST1);
+ phy_tst1 = ath5k_hw_reg_read(ah, AR5K_PHY_TST1);
ath5k_hw_reg_write(ah, AR5K_PHY_TST1_TXHOLD, AR5K_PHY_TST1);
for (i = 0; i <= 20; i++) {
if (!(ath5k_hw_reg_read(ah, AR5K_PHY_ADC_TEST) & 0x10))
break;
udelay(200);
}
- ath5k_hw_reg_write(ah, data, AR5K_PHY_TST1);
- data = 0;
+ ath5k_hw_reg_write(ah, phy_tst1, AR5K_PHY_TST1);
/*
- * Start automatic gain calibration
+ * Start automatic gain control calibration
*
* During AGC calibration RX path is re-routed to
- * a signal detector so we don't receive anything.
+ * a power detector so we don't receive anything.
*
* This method is used to calibrate some static offsets
* used together with on-the fly I/Q calibration (the
* one performed via ath5k_hw_phy_calibrate), that doesn't
* interrupt rx path.
*
+ * While rx path is re-routed to the power detector we also
+ * start a noise floor calibration, to measure the
+ * card's noise floor (the noise we measure when we are not
+ * transmiting or receiving anything).
+ *
* If we are in a noisy environment AGC calibration may time
- * out.
+ * out and/or noise floor calibration might timeout.
*/
AR5K_REG_ENABLE_BITS(ah, AR5K_PHY_AGCCTL,
AR5K_PHY_AGCCTL_CAL);
AR5K_PHY_AGCCTL_CAL, 0, false)) {
ATH5K_ERR(ah->ah_sc, "gain calibration timeout (%uMHz)\n",
channel->center_freq);
- return -EAGAIN;
}
/*
- * Start noise floor calibration
- *
* If we run NF calibration before AGC, it always times out.
* Binary HAL starts NF and AGC calibration at the same time
- * and only waits for AGC to finish. I believe that's wrong because
- * during NF calibration, rx path is also routed to a detector, so if
- * it doesn't finish we won't have RX.
- *
- * XXX: Find an interval that's OK for all cards...
+ * and only waits for AGC to finish. Also if AGC or NF cal.
+ * times out, reset doesn't fail on binary HAL. I believe
+ * that's wrong because since rx path is routed to a detector,
+ * if cal. doesn't finish we won't have RX. Sam's HAL for AR5210/5211
+ * enables noise floor calibration after offset calibration and if noise
+ * floor calibration fails, reset fails. I believe that's
+ * a better approach, we just need to find a polling interval
+ * that suits best, even if reset continues we need to make
+ * sure that rx path is ready.
*/
ath5k_hw_noise_floor_calibration(ah, channel->center_freq);
+
+ /*
+ * Configure QCUs/DCUs
+ */
+
+ /* TODO: HW Compression support for data queues */
+ /* TODO: Burst prefetch for data queues */
+
/*
* Reset queues and start beacon timers at the end of the reset routine
+ * This also sets QCU mask on each DCU for 1:1 qcu to dcu mapping
+ * Note: If we want we can assign multiple qcus on one dcu.
*/
for (i = 0; i < ah->ah_capabilities.cap_queues.q_tx_num; i++) {
- /*No QCU on 5210*/
- if (ah->ah_version != AR5K_AR5210)
- AR5K_REG_WRITE_Q(ah, AR5K_QUEUE_QCUMASK(i), i);
-
ret = ath5k_hw_reset_tx_queue(ah, i);
if (ret) {
ATH5K_ERR(ah->ah_sc,
}
}
+
+ /*
+ * Configure DMA/Interrupts
+ */
+
+ /*
+ * Set Rx/Tx DMA Configuration
+ *
+ * Set standard DMA size (128). Note that
+ * a DMA size of 512 causes rx overruns and tx errors
+ * on pci-e cards (tested on 5424 but since rx overruns
+ * also occur on 5416/5418 with madwifi we set 128
+ * for all PCI-E cards to be safe).
+ *
+ * XXX: need to check 5210 for this
+ * TODO: Check out tx triger level, it's always 64 on dumps but I
+ * guess we can tweak it and see how it goes ;-)
+ */
+ if (ah->ah_version != AR5K_AR5210) {
+ AR5K_REG_WRITE_BITS(ah, AR5K_TXCFG,
+ AR5K_TXCFG_SDMAMR, AR5K_DMASIZE_128B);
+ AR5K_REG_WRITE_BITS(ah, AR5K_RXCFG,
+ AR5K_RXCFG_SDMAMW, AR5K_DMASIZE_128B);
+ }
+
/* Pre-enable interrupts on 5211/5212*/
if (ah->ah_version != AR5K_AR5210)
ath5k_hw_set_imr(ah, ah->ah_imr);
/*
- * Set RF kill flags if supported by the device (read from the EEPROM)
- * Disable gpio_intr for now since it results system hang.
- * TODO: Handle this in ath5k_intr
+ * Setup RFKill interrupt if rfkill flag is set on eeprom.
+ * TODO: Use gpio pin and polarity infos from eeprom
+ * TODO: Handle this in ath5k_intr because it'll result
+ * a nasty interrupt storm.
*/
#if 0
if (AR5K_EEPROM_HDR_RFKILL(ah->ah_capabilities.cap_eeprom.ee_header)) {
}
#endif
- /*
- * Set the 32MHz reference clock on 5212 phy clock sleep register
- *
- * TODO: Find out how to switch to external 32Khz clock to save power
- */
- if (ah->ah_version == AR5K_AR5212) {
- ath5k_hw_reg_write(ah, AR5K_PHY_SCR_32MHZ, AR5K_PHY_SCR);
- ath5k_hw_reg_write(ah, AR5K_PHY_SLMT_32MHZ, AR5K_PHY_SLMT);
- ath5k_hw_reg_write(ah, AR5K_PHY_SCAL_32MHZ, AR5K_PHY_SCAL);
- ath5k_hw_reg_write(ah, AR5K_PHY_SCLOCK_32MHZ, AR5K_PHY_SCLOCK);
- ath5k_hw_reg_write(ah, AR5K_PHY_SDELAY_32MHZ, AR5K_PHY_SDELAY);
- ath5k_hw_reg_write(ah, ah->ah_phy_spending, AR5K_PHY_SPENDING);
-
- data = ath5k_hw_reg_read(ah, AR5K_USEC_5211) & 0xffffc07f ;
- data |= (ah->ah_phy_spending == AR5K_PHY_SPENDING_18) ?
- 0x00000f80 : 0x00001380 ;
- ath5k_hw_reg_write(ah, data, AR5K_USEC_5211);
- data = 0;
- }
-
- if (ah->ah_version == AR5K_AR5212) {
- ath5k_hw_reg_write(ah, 0x000100aa, 0x8118);
- ath5k_hw_reg_write(ah, 0x00003210, 0x811c);
- ath5k_hw_reg_write(ah, 0x00000052, 0x8108);
- if (ah->ah_mac_srev >= AR5K_SREV_AR2413)
- ath5k_hw_reg_write(ah, 0x00000004, 0x8120);
- }
+ /* Enable 32KHz clock function for AR5212+ chips
+ * Set clocks to 32KHz operation and use an
+ * external 32KHz crystal when sleeping if one
+ * exists */
+ if (ah->ah_version == AR5K_AR5212)
+ ath5k_hw_set_sleep_clock(ah, true);
/*
* Disable beacons and reset the register
projects / linux-2.6-omap-h63xx.git / commitdiff