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ath5k: Update RF Buffer handling 

* Use the new way to modify rf buffer and put some rf buffer
   documentation on rfbufer.h

 * Merge all rf regs functions to one

 * Sync with legacy HAL and Sam's HAL

 * Set gain_F settings so that gain_F optimization engine works
   on RF5111/RF5112 (note that both HALs only use step 0 for RF5111
   and they don't use gain_F optimization for this chip, code is
   there but is never used)

  Signed-off-by: Nick Kossifidis <mickflemm@gmail.com>

Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Nick Kossifidis 2009-02-09 06:06:34 +02:00 committed by John W. Linville
parent 6f3b414aca
commit 8892e4ec62
5 changed files with 436 additions and 374 deletions
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11
drivers/net/wireless/ath5k/ath5k.h
View File

@ -165,9 +165,6 @@
#define AR5K_INI_VAL_XR 0
#define AR5K_INI_VAL_MAX 5
#define AR5K_RF5111_INI_RF_MAX_BANKS AR5K_MAX_RF_BANKS
#define AR5K_RF5112_INI_RF_MAX_BANKS AR5K_MAX_RF_BANKS
/* Used for BSSID etc manipulation */
#define AR5K_LOW_ID(_a)( \
(_a)[0] | (_a)[1] << 8 | (_a)[2] << 16 | (_a)[3] << 24 \
@ -342,6 +339,7 @@ struct ath5k_srev_name {
#define AR5K_SREV_PHY_5211 0x30
#define AR5K_SREV_PHY_5212 0x41
#define AR5K_SREV_PHY_5212A 0x42
#define AR5K_SREV_PHY_2112B 0x43
#define AR5K_SREV_PHY_2413 0x45
#define AR5K_SREV_PHY_5413 0x61
@ -1083,8 +1081,9 @@ struct ath5k_hw {
u32 ah_txq_isr;
u32 *ah_rf_banks;
size_t ah_rf_banks_size;
size_t ah_rf_regs_count;
struct ath5k_gain ah_gain;
u32 ah_offset[AR5K_MAX_RF_BANKS];
u8 ah_offset[AR5K_MAX_RF_BANKS];
struct {
u16 txp_pcdac[AR5K_EEPROM_POWER_TABLE_SIZE];
@ -1232,7 +1231,9 @@ extern int ath5k_hw_disable_pspoll(struct ath5k_hw *ah);
extern int ath5k_hw_write_initvals(struct ath5k_hw *ah, u8 mode, bool change_channel);
/* Initialize RF */
extern int ath5k_hw_rfregs(struct ath5k_hw *ah, struct ieee80211_channel *channel, unsigned int mode);
extern int ath5k_hw_rfregs_init(struct ath5k_hw *ah,
struct ieee80211_channel *channel,
unsigned int mode);
extern int ath5k_hw_rfgain_init(struct ath5k_hw *ah, unsigned int freq);
extern enum ath5k_rfgain ath5k_hw_gainf_calibrate(struct ath5k_hw *ah);
extern int ath5k_hw_rfgain_opt_init(struct ath5k_hw *ah);

685
drivers/net/wireless/ath5k/phy.c
View File

@ -32,48 +32,80 @@
/*
* Used to modify RF Banks before writing them to AR5K_RF_BUFFER
*/
static unsigned int ath5k_hw_rfregs_op(u32 *rf, u32 offset, u32 reg, u32 bits,
u32 first, u32 col, bool set)
static unsigned int ath5k_hw_rfb_op(struct ath5k_hw *ah,
const struct ath5k_rf_reg *rf_regs,
u32 val, u8 reg_id, bool set)
{
u32 mask, entry, last, data, shift, position;
s32 left;
const struct ath5k_rf_reg *rfreg = NULL;
u8 offset, bank, num_bits, col, position;
u16 entry;
u32 mask, data, last_bit, bits_shifted, first_bit;
u32 *rfb;
s32 bits_left;
int i;
data = 0;
rfb = ah->ah_rf_banks;
if (rf == NULL)
for (i = 0; i < ah->ah_rf_regs_count; i++) {
if (rf_regs[i].index == reg_id) {
rfreg = &rf_regs[i];
break;
}
}
if (rfb == NULL || rfreg == NULL) {
ATH5K_PRINTF("Rf register not found!\n");
/* should not happen */
return 0;
}
if (!(col <= 3 && bits <= 32 && first + bits <= 319)) {
bank = rfreg->bank;
num_bits = rfreg->field.len;
first_bit = rfreg->field.pos;
col = rfreg->field.col;
/* first_bit is an offset from bank's
* start. Since we have all banks on
* the same array, we use this offset
* to mark each bank's start */
offset = ah->ah_offset[bank];
/* Boundary check */
if (!(col <= 3 && num_bits <= 32 && first_bit + num_bits <= 319)) {
ATH5K_PRINTF("invalid values at offset %u\n", offset);
return 0;
}
entry = ((first - 1) / 8) + offset;
position = (first - 1) % 8;
entry = ((first_bit - 1) / 8) + offset;
position = (first_bit - 1) % 8;
if (set)
data = ath5k_hw_bitswap(reg, bits);
data = ath5k_hw_bitswap(val, num_bits);
for (i = shift = 0, left = bits; left > 0; position = 0, entry++, i++) {
last = (position + left > 8) ? 8 : position + left;
mask = (((1 << last) - 1) ^ ((1 << position) - 1)) << (col * 8);
for (bits_shifted = 0, bits_left = num_bits; bits_left > 0;
position = 0, entry++) {
last_bit = (position + bits_left > 8) ? 8 :
position + bits_left;
mask = (((1 << last_bit) - 1) ^ ((1 << position) - 1)) <<
(col * 8);
if (set) {
rf[entry] &= ~mask;
rf[entry] |= ((data << position) << (col * 8)) & mask;
rfb[entry] &= ~mask;
rfb[entry] |= ((data << position) << (col * 8)) & mask;
data >>= (8 - position);
} else {
data = (((rf[entry] & mask) >> (col * 8)) >> position)
<< shift;
shift += last - position;
data |= (((rfb[entry] & mask) >> (col * 8)) >> position)
<< bits_shifted;
bits_shifted += last_bit - position;
}
left -= 8 - position;
bits_left -= 8 - position;
}
data = set ? 1 : ath5k_hw_bitswap(data, bits);
data = set ? 1 : ath5k_hw_bitswap(data, num_bits);
return data;
}
@ -167,6 +199,7 @@ static u32 ath5k_hw_rf_gainf_corr(struct ath5k_hw *ah)
u32 *rf;
const struct ath5k_gain_opt *go;
const struct ath5k_gain_opt_step *g_step;
const struct ath5k_rf_reg *rf_regs;
/* Only RF5112 Rev. 2 supports it */
if ((ah->ah_radio != AR5K_RF5112) ||
@ -174,6 +207,8 @@ static u32 ath5k_hw_rf_gainf_corr(struct ath5k_hw *ah)
return 0;
go = &rfgain_opt_5112;
rf_regs = rf_regs_5112a;
ah->ah_rf_regs_count = ARRAY_SIZE(rf_regs_5112a);
g_step = &go->go_step[ah->ah_gain.g_step_idx];
@ -184,11 +219,11 @@ static u32 ath5k_hw_rf_gainf_corr(struct ath5k_hw *ah)
ah->ah_gain.g_f_corr = 0;
/* No VGA (Variable Gain Amplifier) override, skip */
if (ath5k_hw_rfregs_op(rf, ah->ah_offset[7], 0, 1, 36, 0, false) != 1)
if (ath5k_hw_rfb_op(ah, rf_regs, 0, AR5K_RF_MIXVGA_OVR, false) != 1)
return 0;
/* Mix gain stepping */
step = ath5k_hw_rfregs_op(rf, ah->ah_offset[7], 0, 4, 32, 0, false);
step = ath5k_hw_rfb_op(ah, rf_regs, 0, AR5K_RF_MIXGAIN_STEP, false);
/* Mix gain override */
mix = g_step->gos_param[0];
@ -217,6 +252,7 @@ static u32 ath5k_hw_rf_gainf_corr(struct ath5k_hw *ah)
* their detection window) so we must ignore it */
static bool ath5k_hw_rf_check_gainf_readback(struct ath5k_hw *ah)
{
const struct ath5k_rf_reg *rf_regs;
u32 step, mix_ovr, level[4];
u32 *rf;
@ -226,8 +262,13 @@ static bool ath5k_hw_rf_check_gainf_readback(struct ath5k_hw *ah)
rf = ah->ah_rf_banks;
if (ah->ah_radio == AR5K_RF5111) {
step = ath5k_hw_rfregs_op(rf, ah->ah_offset[7], 0, 6, 37, 0,
false);
rf_regs = rf_regs_5111;
ah->ah_rf_regs_count = ARRAY_SIZE(rf_regs_5111);
step = ath5k_hw_rfb_op(ah, rf_regs, 0, AR5K_RF_RFGAIN_STEP,
false);
level[0] = 0;
level[1] = (step == 63) ? 50 : step + 4;
level[2] = (step != 63) ? 64 : level[0];
@ -238,8 +279,13 @@ static bool ath5k_hw_rf_check_gainf_readback(struct ath5k_hw *ah)
ah->ah_gain.g_low = level[0] +
(step == 63 ? AR5K_GAIN_DYN_ADJUST_LO_MARGIN : 0);
} else {
mix_ovr = ath5k_hw_rfregs_op(rf, ah->ah_offset[7], 0, 1, 36, 0,
false);
rf_regs = rf_regs_5112;
ah->ah_rf_regs_count = ARRAY_SIZE(rf_regs_5112);
mix_ovr = ath5k_hw_rfb_op(ah, rf_regs, 0, AR5K_RF_MIXVGA_OVR,
false);
level[0] = level[2] = 0;
if (mix_ovr == 1) {
@ -451,341 +497,320 @@ int ath5k_hw_rfgain_init(struct ath5k_hw *ah, unsigned int freq)
* RF Registers setup *
\********************/
/*
* Read EEPROM Calibration data, modify RF Banks and Initialize RF5111
*/
static int ath5k_hw_rf5111_rfregs(struct ath5k_hw *ah,
struct ieee80211_channel *channel, unsigned int mode)
{
struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
u32 *rf;
const unsigned int rf_size = ARRAY_SIZE(rfb_5111);
unsigned int i;
int obdb = -1, bank = -1;
u32 ee_mode;
AR5K_ASSERT_ENTRY(mode, AR5K_MODE_MAX);
rf = ah->ah_rf_banks;
/* Copy values to modify them */
for (i = 0; i < rf_size; i++) {
if (rfb_5111[i].rfb_bank >= AR5K_RF5111_INI_RF_MAX_BANKS) {
ATH5K_ERR(ah->ah_sc, "invalid bank\n");
return -EINVAL;
}
if (bank != rfb_5111[i].rfb_bank) {
bank = rfb_5111[i].rfb_bank;
ah->ah_offset[bank] = i;
}
rf[i] = rfb_5111[i].rfb_mode_data[mode];
}
/* Modify bank 0 */
if (channel->hw_value & CHANNEL_2GHZ) {
if (channel->hw_value & CHANNEL_CCK)
ee_mode = AR5K_EEPROM_MODE_11B;
else
ee_mode = AR5K_EEPROM_MODE_11G;
obdb = 0;
if (!ath5k_hw_rfregs_op(rf, ah->ah_offset[0],
ee->ee_ob[ee_mode][obdb], 3, 119, 0, true))
return -EINVAL;
if (!ath5k_hw_rfregs_op(rf, ah->ah_offset[0],
ee->ee_ob[ee_mode][obdb], 3, 122, 0, true))
return -EINVAL;
obdb = 1;
/* Modify bank 6 */
} else {
/* For 11a, Turbo and XR */
ee_mode = AR5K_EEPROM_MODE_11A;
obdb = channel->center_freq >= 5725 ? 3 :
(channel->center_freq >= 5500 ? 2 :
(channel->center_freq >= 5260 ? 1 :
(channel->center_freq > 4000 ? 0 : -1)));
if (!ath5k_hw_rfregs_op(rf, ah->ah_offset[6],
ee->ee_pwd_84, 1, 51, 3, true))
return -EINVAL;
if (!ath5k_hw_rfregs_op(rf, ah->ah_offset[6],
ee->ee_pwd_90, 1, 45, 3, true))
return -EINVAL;
}
if (!ath5k_hw_rfregs_op(rf, ah->ah_offset[6],
!ee->ee_xpd[ee_mode], 1, 95, 0, true))
return -EINVAL;
if (!ath5k_hw_rfregs_op(rf, ah->ah_offset[6],
ee->ee_x_gain[ee_mode], 4, 96, 0, true))
return -EINVAL;
if (!ath5k_hw_rfregs_op(rf, ah->ah_offset[6], obdb >= 0 ?
ee->ee_ob[ee_mode][obdb] : 0, 3, 104, 0, true))
return -EINVAL;
if (!ath5k_hw_rfregs_op(rf, ah->ah_offset[6], obdb >= 0 ?
ee->ee_db[ee_mode][obdb] : 0, 3, 107, 0, true))
return -EINVAL;
/* Modify bank 7 */
if (!ath5k_hw_rfregs_op(rf, ah->ah_offset[7],
ee->ee_i_gain[ee_mode], 6, 29, 0, true))
return -EINVAL;
if (!ath5k_hw_rfregs_op(rf, ah->ah_offset[7],
ee->ee_xpd[ee_mode], 1, 4, 0, true))
return -EINVAL;
/* Write RF values */
for (i = 0; i < rf_size; i++) {
AR5K_REG_WAIT(i);
ath5k_hw_reg_write(ah, rf[i], rfb_5111[i].rfb_ctrl_register);
}
ah->ah_gain.g_state = AR5K_RFGAIN_ACTIVE;
return 0;
}
/*
* Read EEPROM Calibration data, modify RF Banks and Initialize RF5112
* Setup RF registers by writing rf buffer on hw
*/
static int ath5k_hw_rf5112_rfregs(struct ath5k_hw *ah,
struct ieee80211_channel *channel, unsigned int mode)
{
const struct ath5k_ini_rfbuffer *rf_ini;
struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
u32 *rf;
unsigned int rf_size, i;
int obdb = -1, bank = -1;
u32 ee_mode;
AR5K_ASSERT_ENTRY(mode, AR5K_MODE_MAX);
rf = ah->ah_rf_banks;
if (ah->ah_radio_5ghz_revision >= AR5K_SREV_RAD_5112A) {
rf_ini = rfb_5112a;
rf_size = ARRAY_SIZE(rfb_5112a);
} else {
rf_ini = rfb_5112;
rf_size = ARRAY_SIZE(rfb_5112);
}
/* Copy values to modify them */
for (i = 0; i < rf_size; i++) {
if (rf_ini[i].rfb_bank >= AR5K_RF5112_INI_RF_MAX_BANKS) {
ATH5K_ERR(ah->ah_sc, "invalid bank\n");
return -EINVAL;
}
if (bank != rf_ini[i].rfb_bank) {
bank = rf_ini[i].rfb_bank;
ah->ah_offset[bank] = i;
}
rf[i] = rf_ini[i].rfb_mode_data[mode];
}
/* Modify bank 6 */
if (channel->hw_value & CHANNEL_2GHZ) {
if (channel->hw_value & CHANNEL_OFDM)
ee_mode = AR5K_EEPROM_MODE_11G;
else
ee_mode = AR5K_EEPROM_MODE_11B;
obdb = 0;
if (!ath5k_hw_rfregs_op(rf, ah->ah_offset[6],
ee->ee_ob[ee_mode][obdb], 3, 287, 0, true))
return -EINVAL;
if (!ath5k_hw_rfregs_op(rf, ah->ah_offset[6],
ee->ee_ob[ee_mode][obdb], 3, 290, 0, true))
return -EINVAL;
} else {
/* For 11a, Turbo and XR */
ee_mode = AR5K_EEPROM_MODE_11A;
obdb = channel->center_freq >= 5725 ? 3 :
(channel->center_freq >= 5500 ? 2 :
(channel->center_freq >= 5260 ? 1 :
(channel->center_freq > 4000 ? 0 : -1)));
if (obdb == -1)
return -EINVAL;
if (!ath5k_hw_rfregs_op(rf, ah->ah_offset[6],
ee->ee_ob[ee_mode][obdb], 3, 279, 0, true))
return -EINVAL;
if (!ath5k_hw_rfregs_op(rf, ah->ah_offset[6],
ee->ee_ob[ee_mode][obdb], 3, 282, 0, true))
return -EINVAL;
}
ath5k_hw_rfregs_op(rf, ah->ah_offset[6],
ee->ee_x_gain[ee_mode], 2, 270, 0, true);
ath5k_hw_rfregs_op(rf, ah->ah_offset[6],
ee->ee_x_gain[ee_mode], 2, 257, 0, true);
if (!ath5k_hw_rfregs_op(rf, ah->ah_offset[6],
ee->ee_xpd[ee_mode], 1, 302, 0, true))
return -EINVAL;
/* Modify bank 7 */
if (!ath5k_hw_rfregs_op(rf, ah->ah_offset[7],
ee->ee_i_gain[ee_mode], 6, 14, 0, true))
return -EINVAL;
/* Write RF values */
for (i = 0; i < rf_size; i++)
ath5k_hw_reg_write(ah, rf[i], rf_ini[i].rfb_ctrl_register);
ah->ah_gain.g_state = AR5K_RFGAIN_ACTIVE;
return 0;
}
/*
* Initialize RF5413/5414 and future chips
* (until we come up with a better solution)
*/
static int ath5k_hw_rf5413_rfregs(struct ath5k_hw *ah,
struct ieee80211_channel *channel, unsigned int mode)
{
const struct ath5k_ini_rfbuffer *rf_ini;
u32 *rf;
unsigned int rf_size, i;
int bank = -1;
AR5K_ASSERT_ENTRY(mode, AR5K_MODE_MAX);
rf = ah->ah_rf_banks;
switch (ah->ah_radio) {
case AR5K_RF5413:
rf_ini = rfb_5413;
rf_size = ARRAY_SIZE(rfb_5413);
break;
case AR5K_RF2413:
rf_ini = rfb_2413;
rf_size = ARRAY_SIZE(rfb_2413);
if (mode < 2) {
ATH5K_ERR(ah->ah_sc,
"invalid channel mode: %i\n", mode);
return -EINVAL;
}
break;
case AR5K_RF2425:
rf_ini = rfb_2425;
rf_size = ARRAY_SIZE(rfb_2425);
if (mode < 2) {
ATH5K_ERR(ah->ah_sc,
"invalid channel mode: %i\n", mode);
return -EINVAL;
}
break;
default:
return -EINVAL;
}
/* Copy values to modify them */
for (i = 0; i < rf_size; i++) {
if (rf_ini[i].rfb_bank >= AR5K_RF5112_INI_RF_MAX_BANKS) {
ATH5K_ERR(ah->ah_sc, "invalid bank\n");
return -EINVAL;
}
if (bank != rf_ini[i].rfb_bank) {
bank = rf_ini[i].rfb_bank;
ah->ah_offset[bank] = i;
}
rf[i] = rf_ini[i].rfb_mode_data[mode];
}
/*
* After compairing dumps from different cards
* we get the same RF_BUFFER settings (diff returns
* 0 lines). It seems that RF_BUFFER settings are static
* and are written unmodified (no EEPROM stuff
* is used because calibration data would be
* different between different cards and would result
* different RF_BUFFER settings)
*/
/* Write RF values */
for (i = 0; i < rf_size; i++)
ath5k_hw_reg_write(ah, rf[i], rf_ini[i].rfb_ctrl_register);
return 0;
}
/*
* Initialize RF
*/
int ath5k_hw_rfregs(struct ath5k_hw *ah, struct ieee80211_channel *channel,
int ath5k_hw_rfregs_init(struct ath5k_hw *ah, struct ieee80211_channel *channel,
unsigned int mode)
{
int (*func)(struct ath5k_hw *, struct ieee80211_channel *, unsigned int);
int ret;
const struct ath5k_rf_reg *rf_regs;
const struct ath5k_ini_rfbuffer *ini_rfb;
const struct ath5k_gain_opt *go = NULL;
const struct ath5k_gain_opt_step *g_step;
struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
u8 ee_mode = 0;
u32 *rfb;
int i, obdb = -1, bank = -1;
switch (ah->ah_radio) {
case AR5K_RF5111:
ah->ah_rf_banks_size = sizeof(rfb_5111);
func = ath5k_hw_rf5111_rfregs;
rf_regs = rf_regs_5111;
ah->ah_rf_regs_count = ARRAY_SIZE(rf_regs_5111);
ini_rfb = rfb_5111;
ah->ah_rf_banks_size = ARRAY_SIZE(rfb_5111);
go = &rfgain_opt_5111;
break;
case AR5K_RF5112:
if (ah->ah_radio_5ghz_revision >= AR5K_SREV_RAD_5112A)
ah->ah_rf_banks_size = sizeof(rfb_5112a);
else
ah->ah_rf_banks_size = sizeof(rfb_5112);
func = ath5k_hw_rf5112_rfregs;
break;
case AR5K_RF5413:
ah->ah_rf_banks_size = sizeof(rfb_5413);
func = ath5k_hw_rf5413_rfregs;
if (ah->ah_radio_5ghz_revision >= AR5K_SREV_RAD_5112A) {
rf_regs = rf_regs_5112a;
ah->ah_rf_regs_count = ARRAY_SIZE(rf_regs_5112a);
ini_rfb = rfb_5112a;
ah->ah_rf_banks_size = ARRAY_SIZE(rfb_5112a);
} else {
rf_regs = rf_regs_5112;
ah->ah_rf_regs_count = ARRAY_SIZE(rf_regs_5112);
ini_rfb = rfb_5112;
ah->ah_rf_banks_size = ARRAY_SIZE(rfb_5112);
}
go = &rfgain_opt_5112;
break;
case AR5K_RF2413:
ah->ah_rf_banks_size = sizeof(rfb_2413);
func = ath5k_hw_rf5413_rfregs;
rf_regs = rf_regs_2413;
ah->ah_rf_regs_count = ARRAY_SIZE(rf_regs_2413);
ini_rfb = rfb_2413;
ah->ah_rf_banks_size = ARRAY_SIZE(rfb_2413);
break;
case AR5K_RF2316:
rf_regs = rf_regs_2316;
ah->ah_rf_regs_count = ARRAY_SIZE(rf_regs_2316);
ini_rfb = rfb_2316;
ah->ah_rf_banks_size = ARRAY_SIZE(rfb_2316);
break;
case AR5K_RF5413:
rf_regs = rf_regs_5413;
ah->ah_rf_regs_count = ARRAY_SIZE(rf_regs_5413);
ini_rfb = rfb_5413;
ah->ah_rf_banks_size = ARRAY_SIZE(rfb_5413);
break;
case AR5K_RF2317:
rf_regs = rf_regs_2425;
ah->ah_rf_regs_count = ARRAY_SIZE(rf_regs_2425);
ini_rfb = rfb_2317;
ah->ah_rf_banks_size = ARRAY_SIZE(rfb_2317);
break;
case AR5K_RF2425:
ah->ah_rf_banks_size = sizeof(rfb_2425);
func = ath5k_hw_rf5413_rfregs;
rf_regs = rf_regs_2425;
ah->ah_rf_regs_count = ARRAY_SIZE(rf_regs_2425);
if (ah->ah_mac_srev < AR5K_SREV_AR2417) {
ini_rfb = rfb_2425;
ah->ah_rf_banks_size = ARRAY_SIZE(rfb_2425);
} else {
ini_rfb = rfb_2417;
ah->ah_rf_banks_size = ARRAY_SIZE(rfb_2417);
}
break;
default:
return -EINVAL;
}
/* If it's the first time we set rf buffer, allocate
* ah->ah_rf_banks based on ah->ah_rf_banks_size
* we set above */
if (ah->ah_rf_banks == NULL) {
/* XXX do extra checks? */
ah->ah_rf_banks = kmalloc(ah->ah_rf_banks_size, GFP_KERNEL);
ah->ah_rf_banks = kmalloc(sizeof(u32) * ah->ah_rf_banks_size,
GFP_KERNEL);
if (ah->ah_rf_banks == NULL) {
ATH5K_ERR(ah->ah_sc, "out of memory\n");
return -ENOMEM;
}
}
ret = func(ah, channel, mode);
/* Copy values to modify them */
rfb = ah->ah_rf_banks;
return ret;
for (i = 0; i < ah->ah_rf_banks_size; i++) {
if (ini_rfb[i].rfb_bank >= AR5K_MAX_RF_BANKS) {
ATH5K_ERR(ah->ah_sc, "invalid bank\n");
return -EINVAL;
}
/* Bank changed, write down the offset */
if (bank != ini_rfb[i].rfb_bank) {
bank = ini_rfb[i].rfb_bank;
ah->ah_offset[bank] = i;
}
rfb[i] = ini_rfb[i].rfb_mode_data[mode];
}
/* Set Output and Driver bias current (OB/DB) */
if (channel->hw_value & CHANNEL_2GHZ) {
if (channel->hw_value & CHANNEL_CCK)
ee_mode = AR5K_EEPROM_MODE_11B;
else
ee_mode = AR5K_EEPROM_MODE_11G;
/* For RF511X/RF211X combination we
* use b_OB and b_DB parameters stored
* in eeprom on ee->ee_ob[ee_mode][0]
*
* For all other chips we use OB/DB for 2Ghz
* stored in the b/g modal section just like
* 802.11a on ee->ee_ob[ee_mode][1] */
if ((ah->ah_radio == AR5K_RF5111) ||
(ah->ah_radio == AR5K_RF5112))
obdb = 0;
else
obdb = 1;
ath5k_hw_rfb_op(ah, rf_regs, ee->ee_ob[ee_mode][obdb],
AR5K_RF_OB_2GHZ, true);
ath5k_hw_rfb_op(ah, rf_regs, ee->ee_db[ee_mode][obdb],
AR5K_RF_DB_2GHZ, true);
/* RF5111 always needs OB/DB for 5GHz, even if we use 2GHz */
} else if ((channel->hw_value & CHANNEL_5GHZ) ||
(ah->ah_radio == AR5K_RF5111)) {
/* For 11a, Turbo and XR we need to choose
* OB/DB based on frequency range */
ee_mode = AR5K_EEPROM_MODE_11A;
obdb = channel->center_freq >= 5725 ? 3 :
(channel->center_freq >= 5500 ? 2 :
(channel->center_freq >= 5260 ? 1 :
(channel->center_freq > 4000 ? 0 : -1)));
if (obdb < 0)
return -EINVAL;
ath5k_hw_rfb_op(ah, rf_regs, ee->ee_ob[ee_mode][obdb],
AR5K_RF_OB_5GHZ, true);
ath5k_hw_rfb_op(ah, rf_regs, ee->ee_db[ee_mode][obdb],
AR5K_RF_DB_5GHZ, true);
}
g_step = &go->go_step[ah->ah_gain.g_step_idx];
/* Bank Modifications (chip-specific) */
if (ah->ah_radio == AR5K_RF5111) {
/* Set gain_F settings according to current step */
if (channel->hw_value & CHANNEL_OFDM) {
AR5K_REG_WRITE_BITS(ah, AR5K_PHY_FRAME_CTL,
AR5K_PHY_FRAME_CTL_TX_CLIP,
g_step->gos_param[0]);
ath5k_hw_rfb_op(ah, rf_regs, g_step->gos_param[1],
AR5K_RF_PWD_90, true);
ath5k_hw_rfb_op(ah, rf_regs, g_step->gos_param[2],
AR5K_RF_PWD_84, true);
ath5k_hw_rfb_op(ah, rf_regs, g_step->gos_param[3],
AR5K_RF_RFGAIN_SEL, true);
/* We programmed gain_F parameters, switch back
* to active state */
ah->ah_gain.g_state = AR5K_RFGAIN_ACTIVE;
}
/* Bank 6/7 setup */
ath5k_hw_rfb_op(ah, rf_regs, !ee->ee_xpd[ee_mode],
AR5K_RF_PWD_XPD, true);
ath5k_hw_rfb_op(ah, rf_regs, ee->ee_x_gain[ee_mode],
AR5K_RF_XPD_GAIN, true);
ath5k_hw_rfb_op(ah, rf_regs, ee->ee_i_gain[ee_mode],
AR5K_RF_GAIN_I, true);
ath5k_hw_rfb_op(ah, rf_regs, ee->ee_xpd[ee_mode],
AR5K_RF_PLO_SEL, true);
/* TODO: Half/quarter channel support */
}
if (ah->ah_radio == AR5K_RF5112) {
/* Set gain_F settings according to current step */
if (channel->hw_value & CHANNEL_OFDM) {
ath5k_hw_rfb_op(ah, rf_regs, g_step->gos_param[0],
AR5K_RF_MIXGAIN_OVR, true);
ath5k_hw_rfb_op(ah, rf_regs, g_step->gos_param[1],
AR5K_RF_PWD_138, true);
ath5k_hw_rfb_op(ah, rf_regs, g_step->gos_param[2],
AR5K_RF_PWD_137, true);
ath5k_hw_rfb_op(ah, rf_regs, g_step->gos_param[3],
AR5K_RF_PWD_136, true);
ath5k_hw_rfb_op(ah, rf_regs, g_step->gos_param[4],
AR5K_RF_PWD_132, true);
ath5k_hw_rfb_op(ah, rf_regs, g_step->gos_param[5],
AR5K_RF_PWD_131, true);
ath5k_hw_rfb_op(ah, rf_regs, g_step->gos_param[6],
AR5K_RF_PWD_130, true);
/* We programmed gain_F parameters, switch back
* to active state */
ah->ah_gain.g_state = AR5K_RFGAIN_ACTIVE;
}
/* Bank 6/7 setup */
ath5k_hw_rfb_op(ah, rf_regs, ee->ee_xpd[ee_mode],
AR5K_RF_XPD_SEL, true);
if (ah->ah_radio_5ghz_revision < AR5K_SREV_RAD_5112A) {
/* Rev. 1 supports only one xpd */
ath5k_hw_rfb_op(ah, rf_regs,
ee->ee_x_gain[ee_mode],
AR5K_RF_XPD_GAIN, true);
} else {
/* TODO: Set high and low gain bits */
ath5k_hw_rfb_op(ah, rf_regs,
ee->ee_x_gain[ee_mode],
AR5K_RF_PD_GAIN_LO, true);
ath5k_hw_rfb_op(ah, rf_regs,
ee->ee_x_gain[ee_mode],
AR5K_RF_PD_GAIN_HI, true);
/* Lower synth voltage on Rev 2 */
ath5k_hw_rfb_op(ah, rf_regs, 2,
AR5K_RF_HIGH_VC_CP, true);
ath5k_hw_rfb_op(ah, rf_regs, 2,
AR5K_RF_MID_VC_CP, true);
ath5k_hw_rfb_op(ah, rf_regs, 2,
AR5K_RF_LOW_VC_CP, true);
ath5k_hw_rfb_op(ah, rf_regs, 2,
AR5K_RF_PUSH_UP, true);
/* Decrease power consumption on 5213+ BaseBand */
if (ah->ah_phy_revision >= AR5K_SREV_PHY_5212A) {
ath5k_hw_rfb_op(ah, rf_regs, 1,
AR5K_RF_PAD2GND, true);
ath5k_hw_rfb_op(ah, rf_regs, 1,
AR5K_RF_XB2_LVL, true);
ath5k_hw_rfb_op(ah, rf_regs, 1,
AR5K_RF_XB5_LVL, true);
ath5k_hw_rfb_op(ah, rf_regs, 1,
AR5K_RF_PWD_167, true);
ath5k_hw_rfb_op(ah, rf_regs, 1,
AR5K_RF_PWD_166, true);
}
}
ath5k_hw_rfb_op(ah, rf_regs, ee->ee_i_gain[ee_mode],
AR5K_RF_GAIN_I, true);
/* TODO: Half/quarter channel support */
}
if (ah->ah_radio == AR5K_RF5413 &&
channel->hw_value & CHANNEL_2GHZ) {
ath5k_hw_rfb_op(ah, rf_regs, 1, AR5K_RF_DERBY_CHAN_SEL_MODE,
true);
/* Set optimum value for early revisions (on pci-e chips) */
if (ah->ah_mac_srev >= AR5K_SREV_AR5424 &&
ah->ah_mac_srev < AR5K_SREV_AR5413)
ath5k_hw_rfb_op(ah, rf_regs, ath5k_hw_bitswap(6, 3),
AR5K_RF_PWD_ICLOBUF_2G, true);
}
/* Write RF banks on hw */
for (i = 0; i < ah->ah_rf_banks_size; i++) {
AR5K_REG_WAIT(i);
ath5k_hw_reg_write(ah, rfb[i], ini_rfb[i].rfb_ctrl_register);
}
return 0;
}
/**************************\
PHY/RF channel functions
\**************************/

24
drivers/net/wireless/ath5k/reg.h
View File

@ -2101,34 +2101,10 @@
/*
* RF Buffer register
*
* There are some special control registers on the RF chip
* that hold various operation settings related mostly to
* the analog parts (channel, gain adjustment etc).
*
* We don't write on those registers directly but
* we send a data packet on the buffer register and
* then write on another special register to notify hw
* to apply the settings. This is done so that control registers
* can be dynamicaly programmed during operation and the settings
* are applied faster on the hw.
*
* We sent such data packets during rf initialization and channel change
* through ath5k_hw_rf*_rfregs and ath5k_hw_rf*_channel functions.
*
* The data packets we send during initializadion are inside ath5k_ini_rf
* struct (see ath5k_hw.h) and each one is related to an "rf register bank".
* We use *rfregs functions to modify them acording to current operation
* mode and eeprom values and pass them all together to the chip.
*
* It's obvious from the code that 0x989c is the buffer register but
* for the other special registers that we write to after sending each
* packet, i have no idea. So i'll name them BUFFER_CONTROL_X registers
* for now. It's interesting that they are also used for some other operations.
*
* Also check out hw.h and U.S. Patent 6677779 B1 (about buffer
* registers and control registers):
*
* http://www.google.com/patents?id=qNURAAAAEBAJ
*/
#define AR5K_RF_BUFFER 0x989c

2
drivers/net/wireless/ath5k/reset.c
View File

@ -600,7 +600,7 @@ int ath5k_hw_reset(struct ath5k_hw *ah, enum nl80211_iftype op_mode,
/*
* Write RF registers
*/
ret = ath5k_hw_rfregs(ah, channel, mode);
ret = ath5k_hw_rfregs_init(ah, channel, mode);
if (ret)
return ret;

88
drivers/net/wireless/ath5k/rfbuffer.h
View File

@ -17,6 +17,33 @@
*
*/
/*
* There are some special registers on the RF chip
* that control various operation settings related mostly to
* the analog parts (channel, gain adjustment etc).
*
* We don't write on those registers directly but
* we send a data packet on the chip, using a special register,
* that holds all the settings we need. After we 've sent the
* data packet, we write on another special register to notify hw
* to apply the settings. This is done so that control registers
* can be dynamicaly programmed during operation and the settings
* are applied faster on the hw.
*
* We call each data packet an "RF Bank" and all the data we write
* (all RF Banks) "RF Buffer". This file holds initial RF Buffer
* data for the different RF chips, and various info to match RF
* Buffer offsets with specific RF registers so that we can access
* them. We tweak these settings on rfregs_init function.
*
* Also check out reg.h and U.S. Patent 6677779 B1 (about buffer
* registers and control registers):
*
* http://www.google.com/patents?id=qNURAAAAEBAJ
*/
/*
* Struct to hold default mode specific RF
* register values (RF Banks)
@ -72,15 +99,28 @@ enum ath5k_rf_regs_idx {
AR5K_RF_XB2_LVL,
AR5K_RF_XB5_LVL,
AR5K_RF_PWD_ICLOBUF_2G,
AR5K_RF_PWD_84,
AR5K_RF_PWD_90,
AR5K_RF_PWD_130,
AR5K_RF_PWD_131,
AR5K_RF_PWD_132,
AR5K_RF_PWD_136,
AR5K_RF_PWD_137,
AR5K_RF_PWD_138,
AR5K_RF_PWD_166,
AR5K_RF_PWD_167,
AR5K_RF_DERBY_CHAN_SEL_MODE,
/* BANK 7 */
AR5K_RF_GAIN_I,
AR5K_RF_PLO_SEL,
AR5K_RF_RFGAIN_SEL,
AR5K_RF_RFGAIN_STEP,
AR5K_RF_WAIT_S,
AR5K_RF_WAIT_I,
AR5K_RF_MAX_TIME,
AR5K_RF_MIXVGA_OVR,
AR5K_RF_MIXGAIN_OVR,
AR5K_RF_MIXGAIN_STEP,
AR5K_RF_PD_DELAY_A,
AR5K_RF_PD_DELAY_B,
AR5K_RF_PD_DELAY_XR,
@ -118,19 +158,21 @@ enum ath5k_rf_regs_idx {
#define AR5K_RF5111_MAX_TIME { 2, 49, 0 }
static const struct ath5k_rf_reg rf_regs_5111[] = {
{6, AR5K_RF_OB_2GHZ, AR5K_RF5111_OB_2GHZ},
{6, AR5K_RF_DB_2GHZ, AR5K_RF5111_DB_2GHZ},
{6, AR5K_RF_OB_5GHZ, AR5K_RF5111_OB_5GHZ},
{6, AR5K_RF_DB_5GHZ, AR5K_RF5111_DB_5GHZ},
{6, AR5K_RF_PWD_XPD, AR5K_RF5111_PWD_XPD},
{6, AR5K_RF_XPD_GAIN, AR5K_RF5111_XPD_GAIN},
{7, AR5K_RF_GAIN_I, AR5K_RF5111_GAIN_I},
{7, AR5K_RF_PLO_SEL, AR5K_RF5111_PLO_SEL},
{7, AR5K_RF_RFGAIN_SEL, AR5K_RF5111_RFGAIN_SEL},
{7, AR5K_RF_WAIT_S, AR5K_RF5111_WAIT_S},
{7, AR5K_RF_WAIT_I, AR5K_RF5111_WAIT_I},
{7, AR5K_RF_MAX_TIME, AR5K_RF5111_MAX_TIME}
{6, AR5K_RF_OB_2GHZ, AR5K_RF5111_OB_2GHZ},
{6, AR5K_RF_DB_2GHZ, AR5K_RF5111_DB_2GHZ},
{6, AR5K_RF_OB_5GHZ, AR5K_RF5111_OB_5GHZ},
{6, AR5K_RF_DB_5GHZ, AR5K_RF5111_DB_5GHZ},
{6, AR5K_RF_PWD_XPD, AR5K_RF5111_PWD_XPD},
{6, AR5K_RF_XPD_GAIN, AR5K_RF5111_XPD_GAIN},
{6, AR5K_RF_PWD_84, AR5K_RF5111_PWD(84)},
{6, AR5K_RF_PWD_90, AR5K_RF5111_PWD(90)},
{7, AR5K_RF_GAIN_I, AR5K_RF5111_GAIN_I},
{7, AR5K_RF_PLO_SEL, AR5K_RF5111_PLO_SEL},
{7, AR5K_RF_RFGAIN_SEL, AR5K_RF5111_RFGAIN_SEL},
{7, AR5K_RF_RFGAIN_STEP, AR5K_RF5111_RFGAIN_STEP},
{7, AR5K_RF_WAIT_S, AR5K_RF5111_WAIT_S},
{7, AR5K_RF_WAIT_I, AR5K_RF5111_WAIT_I},
{7, AR5K_RF_MAX_TIME, AR5K_RF5111_MAX_TIME}
};
/* Default mode specific settings */
@ -273,8 +315,16 @@ static const struct ath5k_rf_reg rf_regs_5112[] = {
{6, AR5K_RF_FIXED_BIAS_B, AR5K_RF5112_FIXED_BIAS_B},
{6, AR5K_RF_XPD_SEL, AR5K_RF5112_XPD_SEL},
{6, AR5K_RF_XPD_GAIN, AR5K_RF5112_XPD_GAIN},
{6, AR5K_RF_PWD_130, AR5K_RF5112_PWD(130)},
{6, AR5K_RF_PWD_131, AR5K_RF5112_PWD(131)},
{6, AR5K_RF_PWD_132, AR5K_RF5112_PWD(132)},
{6, AR5K_RF_PWD_136, AR5K_RF5112_PWD(136)},
{6, AR5K_RF_PWD_137, AR5K_RF5112_PWD(137)},
{6, AR5K_RF_PWD_138, AR5K_RF5112_PWD(138)},
{7, AR5K_RF_GAIN_I, AR5K_RF5112X_GAIN_I},
{7, AR5K_RF_MIXVGA_OVR, AR5K_RF5112X_MIXVGA_OVR},
{7, AR5K_RF_MIXGAIN_OVR, AR5K_RF5112X_MIXGAIN_OVR},
{7, AR5K_RF_MIXGAIN_STEP, AR5K_RF5112X_MIXGAIN_STEP},
{7, AR5K_RF_PD_DELAY_A, AR5K_RF5112X_PD_DELAY_A},
{7, AR5K_RF_PD_DELAY_B, AR5K_RF5112X_PD_DELAY_B},
{7, AR5K_RF_PD_DELAY_XR, AR5K_RF5112X_PD_DELAY_XR},
@ -419,7 +469,7 @@ static const struct ath5k_ini_rfbuffer rfb_5112[] = {
#define AR5K_RF5112A_HIGH_VC_CP { 2, 90, 2 }
#define AR5K_RF5112A_MID_VC_CP { 2, 92, 2 }
#define AR5K_RF5112A_LOW_VC_CP { 2, 94, 2 }
#define AR5K_RF5112A_PUSH_UP { 2, 94, 2 }
#define AR5K_RF5112A_PUSH_UP { 1, 254, 2 }
/* Power consumption */
#define AR5K_RF5112A_PAD2GND { 1, 281, 1 }
@ -436,6 +486,14 @@ static const struct ath5k_rf_reg rf_regs_5112a[] = {
{6, AR5K_RF_XPD_SEL, AR5K_RF5112A_XPD_SEL},
{6, AR5K_RF_PD_GAIN_LO, AR5K_RF5112A_PDGAINLO},
{6, AR5K_RF_PD_GAIN_HI, AR5K_RF5112A_PDGAINHI},
{6, AR5K_RF_PWD_130, AR5K_RF5112A_PWD(130)},
{6, AR5K_RF_PWD_131, AR5K_RF5112A_PWD(131)},
{6, AR5K_RF_PWD_132, AR5K_RF5112A_PWD(132)},
{6, AR5K_RF_PWD_136, AR5K_RF5112A_PWD(136)},
{6, AR5K_RF_PWD_137, AR5K_RF5112A_PWD(137)},
{6, AR5K_RF_PWD_138, AR5K_RF5112A_PWD(138)},
{6, AR5K_RF_PWD_166, AR5K_RF5112A_PWD(166)},
{6, AR5K_RF_PWD_167, AR5K_RF5112A_PWD(167)},
{6, AR5K_RF_HIGH_VC_CP, AR5K_RF5112A_HIGH_VC_CP},
{6, AR5K_RF_MID_VC_CP, AR5K_RF5112A_MID_VC_CP},
{6, AR5K_RF_LOW_VC_CP, AR5K_RF5112A_LOW_VC_CP},
@ -444,7 +502,9 @@ static const struct ath5k_rf_reg rf_regs_5112a[] = {
{6, AR5K_RF_XB2_LVL, AR5K_RF5112A_XB2_LVL},
{6, AR5K_RF_XB5_LVL, AR5K_RF5112A_XB5_LVL},
{7, AR5K_RF_GAIN_I, AR5K_RF5112X_GAIN_I},
{7, AR5K_RF_MIXVGA_OVR, AR5K_RF5112X_MIXVGA_OVR},
{7, AR5K_RF_MIXGAIN_OVR, AR5K_RF5112X_MIXGAIN_OVR},
{7, AR5K_RF_MIXGAIN_STEP, AR5K_RF5112X_MIXGAIN_STEP},
{7, AR5K_RF_PD_DELAY_A, AR5K_RF5112X_PD_DELAY_A},
{7, AR5K_RF_PD_DELAY_B, AR5K_RF5112X_PD_DELAY_B},
{7, AR5K_RF_PD_DELAY_XR, AR5K_RF5112X_PD_DELAY_XR},