diff options
author | RA-Jay Hung <Jay_Hung@ralinktech.com> | 2011-02-20 13:54:52 +0100 |
---|---|---|
committer | John W. Linville <linville@tuxdriver.com> | 2011-02-21 15:39:59 -0500 |
commit | d96aa640967ab10641a0a389a4a1569efa54ac72 (patch) | |
tree | 31933f3ada13116abea5b37f3c161d96b7132785 /drivers/net/wireless | |
parent | 9e0bc671873c96104b8f793b03661f443e1c4b5a (diff) | |
download | op-kernel-dev-d96aa640967ab10641a0a389a4a1569efa54ac72.zip op-kernel-dev-d96aa640967ab10641a0a389a4a1569efa54ac72.tar.gz |
rt2x00: Add antenna setting for RT3070/RT3090/RT3390 with RX antenna diversity support
For RT3070/RT3090/RT3390 with RX antenna diversity support, we must select
default antenna using gpio control way even if we do not turn on
antenna diversity feature.
Seperate the meaning of TX/RX chain and antenna. Some chips use
2x2 TX/RX chain but may have 3 RX antennas or 1x1 TX/RX chain
but may have 2 RX antennas to do antenna diversity.
Signed-off-by: RA-Jay Hung <jay_hung@ralinktech.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless')
-rw-r--r-- | drivers/net/wireless/rt2x00/rt2800.h | 3 | ||||
-rw-r--r-- | drivers/net/wireless/rt2x00/rt2800lib.c | 74 | ||||
-rw-r--r-- | drivers/net/wireless/rt2x00/rt2x00.h | 2 |
3 files changed, 70 insertions, 9 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2800.h b/drivers/net/wireless/rt2x00/rt2800.h index ec8159c..ef8f605 100644 --- a/drivers/net/wireless/rt2x00/rt2800.h +++ b/drivers/net/wireless/rt2x00/rt2800.h @@ -270,6 +270,7 @@ /* * GPIO_CTRL_CFG: + * GPIOD: GPIO direction, 0: Output, 1: Input */ #define GPIO_CTRL_CFG 0x0228 #define GPIO_CTRL_CFG_BIT0 FIELD32(0x00000001) @@ -281,6 +282,7 @@ #define GPIO_CTRL_CFG_BIT6 FIELD32(0x00000040) #define GPIO_CTRL_CFG_BIT7 FIELD32(0x00000080) #define GPIO_CTRL_CFG_BIT8 FIELD32(0x00000100) +#define GPIO_CTRL_CFG_GPIOD FIELD32(0x00000800) /* * MCU_CMD_CFG @@ -2068,6 +2070,7 @@ struct mac_iveiv_entry { #define MCU_LED_LED_POLARITY 0x54 #define MCU_RADAR 0x60 #define MCU_BOOT_SIGNAL 0x72 +#define MCU_ANT_SELECT 0X73 #define MCU_BBP_SIGNAL 0x80 #define MCU_POWER_SAVE 0x83 diff --git a/drivers/net/wireless/rt2x00/rt2800lib.c b/drivers/net/wireless/rt2x00/rt2800lib.c index 7a68a67..c62b4a5 100644 --- a/drivers/net/wireless/rt2x00/rt2800lib.c +++ b/drivers/net/wireless/rt2x00/rt2800lib.c @@ -1376,10 +1376,32 @@ void rt2800_config_erp(struct rt2x00_dev *rt2x00dev, struct rt2x00lib_erp *erp, } EXPORT_SYMBOL_GPL(rt2800_config_erp); +static void rt2800_set_ant_diversity(struct rt2x00_dev *rt2x00dev, + enum antenna ant) +{ + u32 reg; + u8 eesk_pin = (ant == ANTENNA_A) ? 1 : 0; + u8 gpio_bit3 = (ant == ANTENNA_A) ? 0 : 1; + + if (rt2x00_is_pci(rt2x00dev)) { + rt2800_register_read(rt2x00dev, E2PROM_CSR, ®); + rt2x00_set_field32(®, E2PROM_CSR_DATA_CLOCK, eesk_pin); + rt2800_register_write(rt2x00dev, E2PROM_CSR, reg); + } else if (rt2x00_is_usb(rt2x00dev)) + rt2800_mcu_request(rt2x00dev, MCU_ANT_SELECT, 0xff, + eesk_pin, 0); + + rt2800_register_read(rt2x00dev, GPIO_CTRL_CFG, ®); + rt2x00_set_field32(®, GPIO_CTRL_CFG_GPIOD, 0); + rt2x00_set_field32(®, GPIO_CTRL_CFG_BIT3, gpio_bit3); + rt2800_register_write(rt2x00dev, GPIO_CTRL_CFG, reg); +} + void rt2800_config_ant(struct rt2x00_dev *rt2x00dev, struct antenna_setup *ant) { u8 r1; u8 r3; + u16 eeprom; rt2800_bbp_read(rt2x00dev, 1, &r1); rt2800_bbp_read(rt2x00dev, 3, &r3); @@ -1387,7 +1409,7 @@ void rt2800_config_ant(struct rt2x00_dev *rt2x00dev, struct antenna_setup *ant) /* * Configure the TX antenna. */ - switch ((int)ant->tx) { + switch (ant->tx_chain_num) { case 1: rt2x00_set_field8(&r1, BBP1_TX_ANTENNA, 0); break; @@ -1402,8 +1424,18 @@ void rt2800_config_ant(struct rt2x00_dev *rt2x00dev, struct antenna_setup *ant) /* * Configure the RX antenna. */ - switch ((int)ant->rx) { + switch (ant->rx_chain_num) { case 1: + if (rt2x00_rt(rt2x00dev, RT3070) || + rt2x00_rt(rt2x00dev, RT3090) || + rt2x00_rt(rt2x00dev, RT3390)) { + rt2x00_eeprom_read(rt2x00dev, + EEPROM_NIC_CONF1, &eeprom); + if (rt2x00_get_field16(eeprom, + EEPROM_NIC_CONF1_ANT_DIVERSITY)) + rt2800_set_ant_diversity(rt2x00dev, + rt2x00dev->default_ant.rx); + } rt2x00_set_field8(&r3, BBP3_RX_ANTENNA, 0); break; case 2: @@ -1449,13 +1481,13 @@ static void rt2800_config_channel_rf2xxx(struct rt2x00_dev *rt2x00dev, { rt2x00_set_field32(&rf->rf4, RF4_FREQ_OFFSET, rt2x00dev->freq_offset); - if (rt2x00dev->default_ant.tx == 1) + if (rt2x00dev->default_ant.tx_chain_num == 1) rt2x00_set_field32(&rf->rf2, RF2_ANTENNA_TX1, 1); - if (rt2x00dev->default_ant.rx == 1) { + if (rt2x00dev->default_ant.rx_chain_num == 1) { rt2x00_set_field32(&rf->rf2, RF2_ANTENNA_RX1, 1); rt2x00_set_field32(&rf->rf2, RF2_ANTENNA_RX2, 1); - } else if (rt2x00dev->default_ant.rx == 2) + } else if (rt2x00dev->default_ant.rx_chain_num == 2) rt2x00_set_field32(&rf->rf2, RF2_ANTENNA_RX2, 1); if (rf->channel > 14) { @@ -1602,13 +1634,13 @@ static void rt2800_config_channel(struct rt2x00_dev *rt2x00dev, tx_pin = 0; /* Turn on unused PA or LNA when not using 1T or 1R */ - if (rt2x00dev->default_ant.tx != 1) { + if (rt2x00dev->default_ant.tx_chain_num == 2) { rt2x00_set_field32(&tx_pin, TX_PIN_CFG_PA_PE_A1_EN, 1); rt2x00_set_field32(&tx_pin, TX_PIN_CFG_PA_PE_G1_EN, 1); } /* Turn on unused PA or LNA when not using 1T or 1R */ - if (rt2x00dev->default_ant.rx != 1) { + if (rt2x00dev->default_ant.rx_chain_num == 2) { rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_A1_EN, 1); rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_G1_EN, 1); } @@ -3068,11 +3100,35 @@ int rt2800_init_eeprom(struct rt2x00_dev *rt2x00dev) /* * Identify default antenna configuration. */ - rt2x00dev->default_ant.tx = + rt2x00dev->default_ant.tx_chain_num = rt2x00_get_field16(eeprom, EEPROM_NIC_CONF0_TXPATH); - rt2x00dev->default_ant.rx = + rt2x00dev->default_ant.rx_chain_num = rt2x00_get_field16(eeprom, EEPROM_NIC_CONF0_RXPATH); + rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC_CONF1, &eeprom); + + if (rt2x00_rt(rt2x00dev, RT3070) || + rt2x00_rt(rt2x00dev, RT3090) || + rt2x00_rt(rt2x00dev, RT3390)) { + value = rt2x00_get_field16(eeprom, + EEPROM_NIC_CONF1_ANT_DIVERSITY); + switch (value) { + case 0: + case 1: + case 2: + rt2x00dev->default_ant.tx = ANTENNA_A; + rt2x00dev->default_ant.rx = ANTENNA_A; + break; + case 3: + rt2x00dev->default_ant.tx = ANTENNA_A; + rt2x00dev->default_ant.rx = ANTENNA_B; + break; + } + } else { + rt2x00dev->default_ant.tx = ANTENNA_A; + rt2x00dev->default_ant.rx = ANTENNA_A; + } + /* * Read frequency offset and RF programming sequence. */ diff --git a/drivers/net/wireless/rt2x00/rt2x00.h b/drivers/net/wireless/rt2x00/rt2x00.h index 39bc2fa..fd28836a 100644 --- a/drivers/net/wireless/rt2x00/rt2x00.h +++ b/drivers/net/wireless/rt2x00/rt2x00.h @@ -225,6 +225,8 @@ struct channel_info { struct antenna_setup { enum antenna rx; enum antenna tx; + u8 rx_chain_num; + u8 tx_chain_num; }; /* |