From: John Li <chen-yang.li@xxxxxxxxxxxx> Signed-off-by: John Li <chen-yang.li@xxxxxxxxxxxx> --- drivers/net/wireless/rt2x00/rt2800.h | 8 +++ drivers/net/wireless/rt2x00/rt2800lib.c | 65 ++++++++++++++++++++++++++++ drivers/net/wireless/rt2x00/rt2800lib.h | 1 + drivers/net/wireless/rt2x00/rt2800pci.c | 1 + drivers/net/wireless/rt2x00/rt2800usb.c | 1 + drivers/net/wireless/rt2x00/rt2x00.h | 11 +++++ drivers/net/wireless/rt2x00/rt2x00config.c | 3 + drivers/net/wireless/rt2x00/rt2x00dev.c | 2 + drivers/net/wireless/rt2x00/rt2x00lib.h | 13 ++++++ drivers/net/wireless/rt2x00/rt2x00link.c | 38 ++++++++++++++++ 10 files changed, 143 insertions(+), 0 deletions(-) diff --git a/drivers/net/wireless/rt2x00/rt2800.h b/drivers/net/wireless/rt2x00/rt2800.h index 2571a2f..51069b8 100644 --- a/drivers/net/wireless/rt2x00/rt2800.h +++ b/drivers/net/wireless/rt2x00/rt2800.h @@ -985,6 +985,14 @@ #define TX_PIN_CFG_RFTR_POL FIELD32(0x00020000) #define TX_PIN_CFG_TRSW_EN FIELD32(0x00040000) #define TX_PIN_CFG_TRSW_POL FIELD32(0x00080000) +#define TX_PIN_CFG_PA_PE_A2_EN FIELD32(0x01000000) +#define TX_PIN_CFG_PA_PE_G2_EN FIELD32(0x02000000) +#define TX_PIN_CFG_PA_PE_A2_POL FIELD32(0x04000000) +#define TX_PIN_CFG_PA_PE_G2_POL FIELD32(0x08000000) +#define TX_PIN_CFG_LNA_PE_A2_EN FIELD32(0x10000000) +#define TX_PIN_CFG_LNA_PE_G2_EN FIELD32(0x20000000) +#define TX_PIN_CFG_LNA_PE_A2_POL FIELD32(0x40000000) +#define TX_PIN_CFG_LNA_PE_G2_POL FIELD32(0x80000000) /* * TX_BAND_CFG: 0x1 use upper 20MHz, 0x0 use lower 20MHz diff --git a/drivers/net/wireless/rt2x00/rt2800lib.c b/drivers/net/wireless/rt2x00/rt2800lib.c index 22a1a8f..2fbd762 100644 --- a/drivers/net/wireless/rt2x00/rt2800lib.c +++ b/drivers/net/wireless/rt2x00/rt2800lib.c @@ -2414,6 +2414,71 @@ void rt2800_gain_calibration(struct rt2x00_dev *rt2x00dev) } EXPORT_SYMBOL_GPL(rt2800_gain_calibration); +void rt2800_vco_calibration(struct rt2x00_dev *rt2x00dev) +{ + u32 tx_pin; + u8 rfcsr; + + /* + * A voltage-controlled oscillator(VCO) is an electronic oscillator designed to be controlled in oscillation frequency by a voltage input. + * Maybe the temperature will affect the frequency of oscillation to be shifted. + * The VCO calibration will be called periodically to adjust the frequency to be precision. + */ + + switch (rt2x00dev->chip.rf) { + case RF2020: + case RF3020: + case RF3021: + case RF3022: + case RF3320: + case RF3052: + rt2800_rfcsr_read(rt2x00dev, 7, &rfcsr); + rt2x00_set_field8(&rfcsr, RFCSR7_RF_TUNING, 1); + rt2800_rfcsr_write(rt2x00dev, 7, rfcsr); + break; + case RF5370: + case RF5372: + case RF5390: + rt2800_rfcsr_read(rt2x00dev, 3, &rfcsr); + rt2x00_set_field8(&rfcsr, RFCSR30_RF_CALIBRATION, 1); + rt2800_rfcsr_write(rt2x00dev, 3, rfcsr); + break; + default: + return; + } + + mdelay(1); + + rt2800_register_read(rt2x00dev, TX_PIN_CFG, &tx_pin); + if (rt2x00dev->rf_channel <= 14) + { + rt2x00_set_field32(&tx_pin, TX_PIN_CFG_PA_PE_G0_EN, 1); + if (rt2x00dev->default_ant.tx_chain_num >= 2) + { + rt2x00_set_field32(&tx_pin, TX_PIN_CFG_PA_PE_G1_EN, 1); + if (rt2x00dev->default_ant.tx_chain_num == 3) + { + rt2x00_set_field32(&tx_pin, TX_PIN_CFG_PA_PE_G2_EN, 1); + } + } + } + else + { + rt2x00_set_field32(&tx_pin, TX_PIN_CFG_PA_PE_A0_EN, 1); + if (rt2x00dev->default_ant.tx_chain_num >= 2) + { + rt2x00_set_field32(&tx_pin, TX_PIN_CFG_PA_PE_A1_EN, 1); + if (rt2x00dev->default_ant.tx_chain_num == 3) + { + rt2x00_set_field32(&tx_pin, TX_PIN_CFG_PA_PE_A2_EN, 1); + } + } + } + rt2800_register_write(rt2x00dev, TX_PIN_CFG, tx_pin); + +} +EXPORT_SYMBOL_GPL(rt2800_vco_calibration); + static void rt2800_config_retry_limit(struct rt2x00_dev *rt2x00dev, struct rt2x00lib_conf *libconf) { diff --git a/drivers/net/wireless/rt2x00/rt2800lib.h b/drivers/net/wireless/rt2x00/rt2800lib.h index 8c3c281..419e36c 100644 --- a/drivers/net/wireless/rt2x00/rt2800lib.h +++ b/drivers/net/wireless/rt2x00/rt2800lib.h @@ -184,6 +184,7 @@ void rt2800_reset_tuner(struct rt2x00_dev *rt2x00dev, struct link_qual *qual); void rt2800_link_tuner(struct rt2x00_dev *rt2x00dev, struct link_qual *qual, const u32 count); void rt2800_gain_calibration(struct rt2x00_dev *rt2x00dev); +void rt2800_vco_calibration(struct rt2x00_dev *rt2x00dev); int rt2800_enable_radio(struct rt2x00_dev *rt2x00dev); void rt2800_disable_radio(struct rt2x00_dev *rt2x00dev); diff --git a/drivers/net/wireless/rt2x00/rt2800pci.c b/drivers/net/wireless/rt2x00/rt2800pci.c index 837b460..25fd45c 100644 --- a/drivers/net/wireless/rt2x00/rt2800pci.c +++ b/drivers/net/wireless/rt2x00/rt2800pci.c @@ -1050,6 +1050,7 @@ static const struct rt2x00lib_ops rt2800pci_rt2x00_ops = { .reset_tuner = rt2800_reset_tuner, .link_tuner = rt2800_link_tuner, .gain_calibration = rt2800_gain_calibration, + .vco_calibration = rt2800_vco_calibration, .start_queue = rt2800pci_start_queue, .kick_queue = rt2800pci_kick_queue, .stop_queue = rt2800pci_stop_queue, diff --git a/drivers/net/wireless/rt2x00/rt2800usb.c b/drivers/net/wireless/rt2x00/rt2800usb.c index 7f21005..2fab90e 100644 --- a/drivers/net/wireless/rt2x00/rt2800usb.c +++ b/drivers/net/wireless/rt2x00/rt2800usb.c @@ -783,6 +783,7 @@ static const struct rt2x00lib_ops rt2800usb_rt2x00_ops = { .reset_tuner = rt2800_reset_tuner, .link_tuner = rt2800_link_tuner, .gain_calibration = rt2800_gain_calibration, + .vco_calibration = rt2800_vco_calibration, .watchdog = rt2800usb_watchdog, .start_queue = rt2800usb_start_queue, .kick_queue = rt2x00usb_kick_queue, diff --git a/drivers/net/wireless/rt2x00/rt2x00.h b/drivers/net/wireless/rt2x00/rt2x00.h index b03b22c..b865e16 100644 --- a/drivers/net/wireless/rt2x00/rt2x00.h +++ b/drivers/net/wireless/rt2x00/rt2x00.h @@ -355,6 +355,11 @@ struct link { * Work structure for scheduling periodic AGC adjustments. */ struct delayed_work agc_work; + + /* + * Work structure for scheduling periodic VCO calibration. + */ + struct delayed_work vco_work; }; enum rt2x00_delayed_flags { @@ -579,6 +584,7 @@ struct rt2x00lib_ops { void (*link_tuner) (struct rt2x00_dev *rt2x00dev, struct link_qual *qual, const u32 count); void (*gain_calibration) (struct rt2x00_dev *rt2x00dev); + void (*vco_calibration) (struct rt2x00_dev *rt2x00dev); /* * Data queue handlers. @@ -979,6 +985,11 @@ struct rt2x00_dev { struct tasklet_struct autowake_tasklet; /* + * Used for VCO periodic calibration. + */ + int rf_channel; + + /* * Protect the interrupt mask register. */ spinlock_t irqmask_lock; diff --git a/drivers/net/wireless/rt2x00/rt2x00config.c b/drivers/net/wireless/rt2x00/rt2x00config.c index b704e5b..006b939 100644 --- a/drivers/net/wireless/rt2x00/rt2x00config.c +++ b/drivers/net/wireless/rt2x00/rt2x00config.c @@ -232,6 +232,9 @@ void rt2x00lib_config(struct rt2x00_dev *rt2x00dev, memcpy(&libconf.channel, &rt2x00dev->spec.channels_info[hw_value], sizeof(libconf.channel)); + + /* Used for VCO periodic calibration */ + rt2x00dev->rf_channel = libconf.rf.channel; } if (test_bit(REQUIRE_PS_AUTOWAKE, &rt2x00dev->cap_flags) && diff --git a/drivers/net/wireless/rt2x00/rt2x00dev.c b/drivers/net/wireless/rt2x00/rt2x00dev.c index c3e1aa7..f78266e 100644 --- a/drivers/net/wireless/rt2x00/rt2x00dev.c +++ b/drivers/net/wireless/rt2x00/rt2x00dev.c @@ -88,6 +88,7 @@ int rt2x00lib_enable_radio(struct rt2x00_dev *rt2x00dev) rt2x00queue_start_queues(rt2x00dev); rt2x00link_start_tuner(rt2x00dev); rt2x00link_start_agc(rt2x00dev); + rt2x00link_start_vcocal(rt2x00dev); /* * Start watchdog monitoring. @@ -111,6 +112,7 @@ void rt2x00lib_disable_radio(struct rt2x00_dev *rt2x00dev) * Stop all queues */ rt2x00link_stop_agc(rt2x00dev); + rt2x00link_stop_vcocal(rt2x00dev); rt2x00link_stop_tuner(rt2x00dev); rt2x00queue_stop_queues(rt2x00dev); rt2x00queue_flush_queues(rt2x00dev, true); diff --git a/drivers/net/wireless/rt2x00/rt2x00lib.h b/drivers/net/wireless/rt2x00/rt2x00lib.h index 4cdf247..78bd43b 100644 --- a/drivers/net/wireless/rt2x00/rt2x00lib.h +++ b/drivers/net/wireless/rt2x00/rt2x00lib.h @@ -33,6 +33,7 @@ #define WATCHDOG_INTERVAL round_jiffies_relative(HZ) #define LINK_TUNE_INTERVAL round_jiffies_relative(HZ) #define AGC_INTERVAL round_jiffies_relative(4 * HZ) +#define VCO_INTERVAL round_jiffies_relative(10 * HZ) /* 10 sec */ /* * rt2x00_rate: Per rate device information @@ -278,12 +279,24 @@ void rt2x00link_stop_watchdog(struct rt2x00_dev *rt2x00dev); void rt2x00link_start_agc(struct rt2x00_dev *rt2x00dev); /** + * rt2x00link_start_vcocal - Start periodic VCO calibration + * @rt2x00dev: Pointer to &struct rt2x00_dev. + */ +void rt2x00link_start_vcocal(struct rt2x00_dev *rt2x00dev); + +/** * rt2x00link_stop_agc - Stop periodic gain calibration * @rt2x00dev: Pointer to &struct rt2x00_dev. */ void rt2x00link_stop_agc(struct rt2x00_dev *rt2x00dev); /** + * rt2x00link_stop_vcocal - Stop periodic VCO calibration + * @rt2x00dev: Pointer to &struct rt2x00_dev. + */ +void rt2x00link_stop_vcocal(struct rt2x00_dev *rt2x00dev); + +/** * rt2x00link_register - Initialize link tuning & watchdog functionality * @rt2x00dev: Pointer to &struct rt2x00_dev. * diff --git a/drivers/net/wireless/rt2x00/rt2x00link.c b/drivers/net/wireless/rt2x00/rt2x00link.c index ea10b00..5da1dab 100644 --- a/drivers/net/wireless/rt2x00/rt2x00link.c +++ b/drivers/net/wireless/rt2x00/rt2x00link.c @@ -447,11 +447,27 @@ void rt2x00link_start_agc(struct rt2x00_dev *rt2x00dev) AGC_INTERVAL); } +void rt2x00link_start_vcocal(struct rt2x00_dev *rt2x00dev) +{ + struct link *link = &rt2x00dev->link; + + if (test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) && + rt2x00dev->ops->lib->vco_calibration) + ieee80211_queue_delayed_work(rt2x00dev->hw, + &link->vco_work, + VCO_INTERVAL); +} + void rt2x00link_stop_agc(struct rt2x00_dev *rt2x00dev) { cancel_delayed_work_sync(&rt2x00dev->link.agc_work); } +void rt2x00link_stop_vcocal(struct rt2x00_dev *rt2x00dev) +{ + cancel_delayed_work_sync(&rt2x00dev->link.vco_work); +} + static void rt2x00link_agc(struct work_struct *work) { struct rt2x00_dev *rt2x00dev = @@ -473,9 +489,31 @@ static void rt2x00link_agc(struct work_struct *work) AGC_INTERVAL); } +static void rt2x00link_vcocal(struct work_struct *work) +{ + struct rt2x00_dev *rt2x00dev = + container_of(work, struct rt2x00_dev, link.vco_work.work); + struct link *link = &rt2x00dev->link; + + /* + * When the radio is shutting down we should + * immediately cease the VCO calibration. + */ + if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) + return; + + rt2x00dev->ops->lib->vco_calibration(rt2x00dev); + + if (test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) + ieee80211_queue_delayed_work(rt2x00dev->hw, + &link->vco_work, + VCO_INTERVAL); +} + void rt2x00link_register(struct rt2x00_dev *rt2x00dev) { INIT_DELAYED_WORK(&rt2x00dev->link.agc_work, rt2x00link_agc); + INIT_DELAYED_WORK(&rt2x00dev->link.vco_work, rt2x00link_vcocal); INIT_DELAYED_WORK(&rt2x00dev->link.watchdog_work, rt2x00link_watchdog); INIT_DELAYED_WORK(&rt2x00dev->link.work, rt2x00link_tuner); } -- 1.7.6.5 -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html