openwrtv4/package/mac80211/patches/308-rt2x00-DMA-fixes-new-chipset-support-rt2800pci.patch

From bfa282e0f525b074ec9a21372ab906156ce0aa20 Mon Sep 17 00:00:00 2001
From: Ivo van Doorn <IvDoorn@gmail.com>
Date: Mon, 16 Mar 2009 20:16:59 +0100
Subject: [PATCH] rt2x00: DMA fixes & new chipset support (rt2800pci)

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
---
 drivers/net/wireless/rt2x00/rt2800pci.c |  320 +++++++++++++++++++++++++++++--
 drivers/net/wireless/rt2x00/rt2800pci.h |   57 ++++++-
 2 files changed, 361 insertions(+), 16 deletions(-)

--- a/drivers/net/wireless/rt2x00/rt2800pci.c
+++ b/drivers/net/wireless/rt2x00/rt2800pci.c
@@ -66,6 +66,8 @@ MODULE_PARM_DESC(nohwcrypt, "Disable har
  */
 #define WAIT_FOR_BBP(__dev, __reg) \
 	rt2x00pci_regbusy_read((__dev), BBP_CSR_CFG, BBP_CSR_CFG_BUSY, (__reg))
+#define WAIT_FOR_RFCSR(__dev, __reg) \
+	rt2x00pci_regbusy_read((__dev), RF_CSR_CFG, RF_CSR_CFG_BUSY, (__reg))
 #define WAIT_FOR_RF(__dev, __reg) \
 	rt2x00pci_regbusy_read((__dev), RF_CSR_CFG0, RF_CSR_CFG0_BUSY, (__reg))
 #define WAIT_FOR_MCU(__dev, __reg) \
@@ -129,6 +131,61 @@ static void rt2800pci_bbp_read(struct rt
 	mutex_unlock(&rt2x00dev->csr_mutex);
 }
 
+static void rt2800pci_rfcsr_write(struct rt2x00_dev *rt2x00dev,
+				  const unsigned int word, const u8 value)
+{
+	u32 reg;
+
+	mutex_lock(&rt2x00dev->csr_mutex);
+
+	/*
+	 * Wait until the RFCSR becomes available, afterwards we
+	 * can safely write the new data into the register.
+	 */
+	if (WAIT_FOR_RFCSR(rt2x00dev, &reg)) {
+		reg = 0;
+		rt2x00_set_field32(&reg, RF_CSR_CFG_DATA, value);
+		rt2x00_set_field32(&reg, RF_CSR_CFG_REGNUM, word);
+		rt2x00_set_field32(&reg, RF_CSR_CFG_WRITE, 1);
+		rt2x00_set_field32(&reg, RF_CSR_CFG_BUSY, 1);
+
+		rt2x00pci_register_write(rt2x00dev, RF_CSR_CFG, reg);
+	}
+
+	mutex_unlock(&rt2x00dev->csr_mutex);
+}
+
+static void rt2800pci_rfcsr_read(struct rt2x00_dev *rt2x00dev,
+				 const unsigned int word, u8 *value)
+{
+	u32 reg;
+
+	mutex_lock(&rt2x00dev->csr_mutex);
+
+	/*
+	 * Wait until the RFCSR becomes available, afterwards we
+	 * can safely write the read request into the register.
+	 * After the data has been written, we wait until hardware
+	 * returns the correct value, if at any time the register
+	 * doesn't become available in time, reg will be 0xffffffff
+	 * which means we return 0xff to the caller.
+	 */
+	if (WAIT_FOR_RFCSR(rt2x00dev, &reg)) {
+		reg = 0;
+		rt2x00_set_field32(&reg, RF_CSR_CFG_REGNUM, word);
+		rt2x00_set_field32(&reg, RF_CSR_CFG_WRITE, 0);
+		rt2x00_set_field32(&reg, RF_CSR_CFG_BUSY, 1);
+
+		rt2x00pci_register_write(rt2x00dev, RF_CSR_CFG, reg);
+
+		WAIT_FOR_RFCSR(rt2x00dev, &reg);
+	}
+
+	*value = rt2x00_get_field32(reg, RF_CSR_CFG_DATA);
+
+	mutex_unlock(&rt2x00dev->csr_mutex);
+}
+
 static void rt2800pci_rf_write(struct rt2x00_dev *rt2x00dev,
 			       const unsigned int word, const u32 value)
 {
@@ -160,6 +217,13 @@ static void rt2800pci_mcu_request(struct
 {
 	u32 reg;
 
+	/*
+	 * RT2880 and RT3052 don't support MCU requests.
+	 */
+	if (rt2x00_rt(&rt2x00dev->chip, RT2880) ||
+	    rt2x00_rt(&rt2x00dev->chip, RT3052))
+		return;
+
 	mutex_lock(&rt2x00dev->csr_mutex);
 
 	/*
@@ -729,13 +793,11 @@ static void rt2800pci_config_lna_gain(st
 	rt2x00dev->lna_gain = lna_gain;
 }
 
-static void rt2800pci_config_channel(struct rt2x00_dev *rt2x00dev,
-				     struct ieee80211_conf *conf,
-				     struct rf_channel *rf,
-				     struct channel_info *info)
+static void rt2800pci_config_channel_rt2x(struct rt2x00_dev *rt2x00dev,
+					  struct ieee80211_conf *conf,
+					  struct rf_channel *rf,
+					  struct channel_info *info)
 {
-	u32 reg;
-	unsigned int tx_pin;
 	u16 eeprom;
 
 	rt2x00_set_field32(&rf->rf4, RF4_FREQ_OFFSET, rt2x00dev->freq_offset);
@@ -745,9 +807,8 @@ static void rt2800pci_config_channel(str
 	 */
 	rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &eeprom);
 
-	if (rt2x00_get_field16(eeprom, EEPROM_ANTENNA_TXPATH) == 1) {
+	if (rt2x00_get_field16(eeprom, EEPROM_ANTENNA_TXPATH) == 1)
 		rt2x00_set_field32(&rf->rf2, RF2_ANTENNA_TX1, 1);
-	}
 
 	if (rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RXPATH) == 1) {
 		rt2x00_set_field32(&rf->rf2, RF2_ANTENNA_RX1, 1);
@@ -806,6 +867,62 @@ static void rt2800pci_config_channel(str
 	rt2800pci_rf_write(rt2x00dev, 2, rf->rf2);
 	rt2800pci_rf_write(rt2x00dev, 3, rf->rf3 & ~0x00000004);
 	rt2800pci_rf_write(rt2x00dev, 4, rf->rf4);
+}
+
+static void rt2800pci_config_channel_rt3x(struct rt2x00_dev *rt2x00dev,
+					  struct ieee80211_conf *conf,
+					  struct rf_channel *rf,
+					  struct channel_info *info)
+{
+	u8 rfcsr;
+
+	rt2800pci_rfcsr_write(rt2x00dev, 2, rf->rf1);
+	rt2800pci_rfcsr_write(rt2x00dev, 2, rf->rf3);
+
+	rt2800pci_rfcsr_read(rt2x00dev, 6, &rfcsr);
+	rt2x00_set_field8(&rfcsr, RFCSR6_R, rf->rf2);
+	rt2800pci_rfcsr_write(rt2x00dev, 6, rfcsr);
+
+	rt2800pci_rfcsr_read(rt2x00dev, 12, &rfcsr);
+	rt2x00_set_field8(&rfcsr, RFCSR12_TX_POWER,
+			  TXPOWER_G_TO_DEV(info->tx_power1));
+	rt2800pci_rfcsr_write(rt2x00dev, 12, rfcsr);
+
+	rt2800pci_rfcsr_read(rt2x00dev, 23, &rfcsr);
+	rt2x00_set_field8(&rfcsr, RFCSR23_FREQ_OFFSET, rt2x00dev->freq_offset);
+	rt2800pci_rfcsr_write(rt2x00dev, 23, rfcsr);
+
+	if (conf_is_ht40(conf))
+		rt2800pci_rfcsr_write(rt2x00dev, 24,
+				      rt2x00dev->calibration_bw40);
+	else
+		rt2800pci_rfcsr_write(rt2x00dev, 24,
+				      rt2x00dev->calibration_bw20);
+
+	rt2800pci_rfcsr_read(rt2x00dev, 23, &rfcsr);
+	rt2x00_set_field8(&rfcsr, RFCSR7_RF_TUNING, 1);
+	rt2800pci_rfcsr_write(rt2x00dev, 23, rfcsr);
+}
+
+static void rt2800pci_config_channel(struct rt2x00_dev *rt2x00dev,
+				     struct ieee80211_conf *conf,
+				     struct rf_channel *rf,
+				     struct channel_info *info)
+{
+	u32 reg;
+	unsigned int tx_pin;
+	u16 eeprom;
+	u8 bbp;
+
+	/*
+	 * Determine antenna settings from EEPROM
+	 */
+	rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &eeprom);
+
+	if (rt2x00_rev(&rt2x00dev->chip) != RT3070_VERSION)
+		rt2800pci_config_channel_rt2x(rt2x00dev, conf, rf, info);
+	else
+		rt2800pci_config_channel_rt3x(rt2x00dev, conf, rf, info);
 
 	/*
 	 * Change BBP settings
@@ -861,6 +978,26 @@ static void rt2800pci_config_channel(str
 
 	rt2x00pci_register_write(rt2x00dev, TX_PIN_CFG, tx_pin);
 
+	rt2800pci_bbp_read(rt2x00dev, 4, &bbp);
+	rt2x00_set_field8(&bbp, BBP4_BANDWIDTH, 2 * conf_is_ht40(conf));
+	rt2800pci_bbp_write(rt2x00dev, 4, bbp);
+
+	rt2800pci_bbp_read(rt2x00dev, 3, &bbp);
+	rt2x00_set_field8(&bbp, BBP3_HT40_PLUS, conf_is_ht40_plus(conf));
+	rt2800pci_bbp_write(rt2x00dev, 3, bbp);
+
+	if (rt2x00_rev(&rt2x00dev->chip) == RT2860C_VERSION) {
+		if (conf_is_ht40(conf)) {
+			rt2800pci_bbp_write(rt2x00dev, 69, 0x1a);
+			rt2800pci_bbp_write(rt2x00dev, 70, 0x0a);
+			rt2800pci_bbp_write(rt2x00dev, 73, 0x16);
+		} else {
+			rt2800pci_bbp_write(rt2x00dev, 69, 0x16);
+			rt2800pci_bbp_write(rt2x00dev, 70, 0x08);
+			rt2800pci_bbp_write(rt2x00dev, 73, 0x11);
+		}
+	}
+
 	msleep(1);
 }
 
@@ -1265,7 +1402,7 @@ static int rt2800pci_init_queues(struct 
 	entry_priv = rt2x00dev->rx->entries[0].priv_data;
 	rt2x00pci_register_write(rt2x00dev, RX_BASE_PTR, entry_priv->desc_dma);
 	rt2x00pci_register_write(rt2x00dev, RX_MAX_CNT, rt2x00dev->rx[0].limit);
-	rt2x00pci_register_write(rt2x00dev, RX_CRX_IDX, 0);
+	rt2x00pci_register_write(rt2x00dev, RX_CRX_IDX, rt2x00dev->rx[0].limit - 1);
 	rt2x00pci_register_write(rt2x00dev, RX_DRX_IDX, 0);
 
 	/*
@@ -1613,7 +1750,7 @@ static int rt2800pci_init_bbp(struct rt2
 	rt2800pci_bbp_write(rt2x00dev, 91, 0x04);
 	rt2800pci_bbp_write(rt2x00dev, 92, 0x00);
 	rt2800pci_bbp_write(rt2x00dev, 103, 0x00);
-	rt2800pci_bbp_write(rt2x00dev, 105, 0x05);
+	rt2800pci_bbp_write(rt2x00dev, 105, 0x01);
 
 	if (rt2x00_rev(&rt2x00dev->chip) == RT2860C_VERSION) {
 		rt2800pci_bbp_write(rt2x00dev, 69, 0x16);
@@ -1623,6 +1760,12 @@ static int rt2800pci_init_bbp(struct rt2
 	if (rt2x00_rev(&rt2x00dev->chip) > RT2860D_VERSION)
 		rt2800pci_bbp_write(rt2x00dev, 84, 0x19);
 
+	if (rt2x00_rt(&rt2x00dev->chip, RT3052)) {
+		rt2800pci_bbp_write(rt2x00dev, 31, 0x08);
+		rt2800pci_bbp_write(rt2x00dev, 78, 0x0e);
+		rt2800pci_bbp_write(rt2x00dev, 80, 0x08);
+	}
+
 	for (i = 0; i < EEPROM_BBP_SIZE; i++) {
 		rt2x00_eeprom_read(rt2x00dev, EEPROM_BBP_START + i, &eeprom);
 
@@ -1636,6 +1779,144 @@ static int rt2800pci_init_bbp(struct rt2
 	return 0;
 }
 
+static u8 rt2800pci_init_rx_filter(struct rt2x00_dev *rt2x00dev,
+				   bool bw40, u8 rfcsr24, u8 filter_target)
+{
+	unsigned int i;
+	u8 bbp;
+	u8 rfcsr;
+	u8 passband;
+	u8 stopband;
+	u8 overtuned = 0;
+
+	rt2800pci_rfcsr_write(rt2x00dev, 24, rfcsr24);
+
+	rt2800pci_bbp_read(rt2x00dev, 4, &bbp);
+	rt2x00_set_field8(&bbp, BBP4_BANDWIDTH, 2 * bw40);
+	rt2800pci_bbp_write(rt2x00dev, 4, bbp);
+
+	rt2800pci_rfcsr_read(rt2x00dev, 22, &rfcsr);
+	rt2x00_set_field8(&rfcsr, RFCSR22_BASEBAND_LOOPBACK, 1);
+	rt2800pci_rfcsr_write(rt2x00dev, 22, rfcsr);
+
+	/*
+	 * Set power & frequency of passband test tone
+	 */
+	rt2800pci_bbp_write(rt2x00dev, 24, 0);
+
+	for (i = 0; i < 100; i++) {
+		rt2800pci_bbp_write(rt2x00dev, 25, 0x90);
+		msleep(1);
+
+		rt2800pci_bbp_read(rt2x00dev, 55, &passband);
+		if (passband)
+			break;
+	}
+
+	/*
+	 * Set power & frequency of stopband test tone
+	 */
+	rt2800pci_bbp_write(rt2x00dev, 24, 0x06);
+
+	for (i = 0; i < 100; i++) {
+		rt2800pci_bbp_write(rt2x00dev, 25, 0x90);
+		msleep(1);
+
+		rt2800pci_bbp_read(rt2x00dev, 55, &stopband);
+
+		if ((passband - stopband) <= filter_target) {
+			rfcsr24++;
+			overtuned += ((passband - stopband) == filter_target);
+		} else
+			break;
+
+		rt2800pci_rfcsr_write(rt2x00dev, 24, rfcsr24);
+	}
+
+	rfcsr24 -= !!overtuned;
+
+	rt2800pci_rfcsr_write(rt2x00dev, 24, rfcsr24);
+	return rfcsr24;
+}
+
+static int rt2800pci_init_rfcsr(struct rt2x00_dev *rt2x00dev)
+{
+	u8 rfcsr;
+	u8 bbp;
+	
+	if (!rt2x00_rf(&rt2x00dev->chip, RF3020) &&
+	    !rt2x00_rf(&rt2x00dev->chip, RF3021) &&
+	    !rt2x00_rf(&rt2x00dev->chip, RF3022))
+		return 0;
+
+	/*
+	 * Init RF calibration.
+	 */
+	rt2800pci_rfcsr_read(rt2x00dev, 30, &rfcsr);
+	rt2x00_set_field8(&rfcsr, RFCSR30_RF_CALIBRATION, 1);
+	rt2800pci_rfcsr_write(rt2x00dev, 30, rfcsr);
+	msleep(1);
+	rt2x00_set_field8(&rfcsr, RFCSR30_RF_CALIBRATION, 0);
+	rt2800pci_rfcsr_write(rt2x00dev, 30, rfcsr);
+
+	rt2800pci_rfcsr_write(rt2x00dev, 0, 0x50);
+	rt2800pci_rfcsr_write(rt2x00dev, 1, 0x01);
+	rt2800pci_rfcsr_write(rt2x00dev, 2, 0xf7);
+	rt2800pci_rfcsr_write(rt2x00dev, 3, 0x75);
+	rt2800pci_rfcsr_write(rt2x00dev, 4, 0x40);
+	rt2800pci_rfcsr_write(rt2x00dev, 5, 0x03);
+	rt2800pci_rfcsr_write(rt2x00dev, 6, 0x02);
+	rt2800pci_rfcsr_write(rt2x00dev, 7, 0x50);
+	rt2800pci_rfcsr_write(rt2x00dev, 8, 0x39);
+	rt2800pci_rfcsr_write(rt2x00dev, 9, 0x0f);
+	rt2800pci_rfcsr_write(rt2x00dev, 10, 0x60);
+	rt2800pci_rfcsr_write(rt2x00dev, 11, 0x21);
+	rt2800pci_rfcsr_write(rt2x00dev, 12, 0x75);
+	rt2800pci_rfcsr_write(rt2x00dev, 13, 0x75);
+	rt2800pci_rfcsr_write(rt2x00dev, 14, 0x90);
+	rt2800pci_rfcsr_write(rt2x00dev, 15, 0x58);
+	rt2800pci_rfcsr_write(rt2x00dev, 16, 0xb3);
+	rt2800pci_rfcsr_write(rt2x00dev, 17, 0x92);
+	rt2800pci_rfcsr_write(rt2x00dev, 18, 0x2c);
+	rt2800pci_rfcsr_write(rt2x00dev, 19, 0x02);
+	rt2800pci_rfcsr_write(rt2x00dev, 20, 0xba);
+	rt2800pci_rfcsr_write(rt2x00dev, 21, 0xdb);
+	rt2800pci_rfcsr_write(rt2x00dev, 22, 0x00);
+	rt2800pci_rfcsr_write(rt2x00dev, 23, 0x31);
+	rt2800pci_rfcsr_write(rt2x00dev, 24, 0x08);
+	rt2800pci_rfcsr_write(rt2x00dev, 25, 0x01);
+	rt2800pci_rfcsr_write(rt2x00dev, 26, 0x25);
+	rt2800pci_rfcsr_write(rt2x00dev, 27, 0x23);
+	rt2800pci_rfcsr_write(rt2x00dev, 28, 0x13);
+	rt2800pci_rfcsr_write(rt2x00dev, 29, 0x83);
+
+	/*
+	 * Set RX Filter calibration for 20MHz and 40MHz
+	 */
+	rt2x00dev->calibration_bw20 =
+	    rt2800pci_init_rx_filter(rt2x00dev, false, 0x07, 0x16);
+	rt2x00dev->calibration_bw40 =
+	    rt2800pci_init_rx_filter(rt2x00dev, true, 0x27, 0x19);
+
+	/*
+	 * Set back to initial state
+	 */
+	rt2800pci_bbp_write(rt2x00dev, 24, 0);
+
+	rt2800pci_rfcsr_read(rt2x00dev, 22, &rfcsr);
+	rt2x00_set_field8(&rfcsr, RFCSR22_BASEBAND_LOOPBACK, 0);
+	rt2800pci_rfcsr_write(rt2x00dev, 22, rfcsr);
+
+	/*
+	 * set BBP back to BW20
+	 */
+	rt2800pci_bbp_read(rt2x00dev, 4, &bbp);
+	rt2x00_set_field8(&bbp, BBP4_BANDWIDTH, 0);
+	rt2800pci_bbp_write(rt2x00dev, 4, bbp);
+
+	return 0;
+}
+
 /*
  * Device state switch handlers.
  */
@@ -1718,7 +1999,8 @@ static int rt2800pci_enable_radio(struct
 		     rt2800pci_init_queues(rt2x00dev) ||
 		     rt2800pci_init_registers(rt2x00dev) ||
 		     rt2800pci_wait_wpdma_ready(rt2x00dev) ||
-		     rt2800pci_init_bbp(rt2x00dev)))
+		     rt2800pci_init_bbp(rt2x00dev) ||
+		     rt2800pci_init_rfcsr(rt2x00dev)))
 		return -EIO;
 
 	/*
@@ -2114,6 +2396,12 @@ static void rt2800pci_fill_rxdone(struct
 	rxdesc->size = rt2x00_get_field32(rxwi0, RXWI_W0_MPDU_TOTAL_BYTE_COUNT);
 
 	/*
+	 * Set RX IDX in register to inform hardware that we have handled
+	 * this entry and it is available for reuse again.
+	 */
+	rt2x00pci_register_write(rt2x00dev, RX_CRX_IDX, entry->entry_idx);
+
+	/*
 	 * Remove TXWI descriptor from start of buffer.
 	 */
 	skb_pull(entry->skb, RXWI_DESC_SIZE);
@@ -2380,7 +2668,8 @@ static int rt2800pci_init_eeprom(struct 
 	    !rt2x00_rf(&rt2x00dev->chip, RF2750) &&
 	    !rt2x00_rf(&rt2x00dev->chip, RF3020) &&
 	    !rt2x00_rf(&rt2x00dev->chip, RF2020) &&
-	    !rt2x00_rf(&rt2x00dev->chip, RF3052)) {
+	    !rt2x00_rf(&rt2x00dev->chip, RF3021) &&
+	    !rt2x00_rf(&rt2x00dev->chip, RF3022)) {
 		ERROR(rt2x00dev, "Invalid RF chipset detected.\n");
 		return -ENODEV;
 	}
@@ -2528,7 +2817,8 @@ static int rt2800pci_probe_hw_mode(struc
 
 	if (rt2x00_rf(&rt2x00dev->chip, RF2820) ||
 	    rt2x00_rf(&rt2x00dev->chip, RF2720) ||
-	    rt2x00_rf(&rt2x00dev->chip, RF3052)) {
+	    rt2x00_rf(&rt2x00dev->chip, RF3021) ||
+	    rt2x00_rf(&rt2x00dev->chip, RF3022)) {
 		spec->num_channels = 14;
 		spec->channels = rf_vals;
 	} else if (rt2x00_rf(&rt2x00dev->chip, RF2850) ||
@@ -2624,7 +2914,9 @@ static int rt2800pci_probe_hw(struct rt2
 	/*
 	 * This device requires firmware.
 	 */
-	__set_bit(DRIVER_REQUIRE_FIRMWARE, &rt2x00dev->flags);
+	if (!rt2x00_rt(&rt2x00dev->chip, RT2880) &&
+	    !rt2x00_rt(&rt2x00dev->chip, RT3052))
+		__set_bit(DRIVER_REQUIRE_FIRMWARE, &rt2x00dev->flags);
 	if (!modparam_nohwcrypt)
 		__set_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags);
 
--- a/drivers/net/wireless/rt2x00/rt2800pci.h
+++ b/drivers/net/wireless/rt2x00/rt2800pci.h
@@ -36,7 +36,8 @@
  * RF2750 2.4G/5G 1T2R
  * RF3020 2.4G 1T1R
  * RF2020 2.4G B/G
- * RF3052 2.4G 2T2R
+ * RF3021 2.4G 1T2R
+ * RF3022 2.4G 2T2R
  */
 #define RF2820				0x0001
 #define RF2850				0x0002
@@ -44,7 +45,8 @@
 #define RF2750				0x0004
 #define RF3020				0x0005
 #define RF2020				0x0006
-#define RF3052				0x0008
+#define RF3021				0x0007
+#define RF3022				0x0008
 
 /*
  * RT2860 version
@@ -373,6 +375,15 @@
 #define PBF_DBG				0x043c
 
 /*
+ * RF registers
+ */
+#define	RF_CSR_CFG			0x0500
+#define RF_CSR_CFG_DATA			FIELD32(0x000000ff)
+#define RF_CSR_CFG_REGNUM		FIELD32(0x00001f00)
+#define RF_CSR_CFG_WRITE		FIELD32(0x00010000)
+#define RF_CSR_CFG_BUSY			FIELD32(0x00020000)
+
+/*
  * MAC Control/Status Registers(CSR).
  * Some values are set in TU, whereas 1 TU == 1024 us.
  */
@@ -1465,6 +1476,48 @@ struct mac_iveiv_entry {
  * BBP 3: RX Antenna
  */
 #define BBP3_RX_ANTENNA			FIELD8(0x18)
+#define BBP3_HT40_PLUS			FIELD8(0x20)
+
+/*
+ * BBP 4: Bandwidth
+ */
+#define BBP4_TX_BF			FIELD8(0x01)
+#define BBP4_BANDWIDTH			FIELD8(0x18)
+
+/*
+ * RFCSR registers
+ * The wordsize of the RFCSR is 8 bits.
+ */
+
+/*
+ * RFCSR 6:
+ */
+#define RFCSR6_R			FIELD8(0x03)
+
+/*
+ * RFCSR 7:
+ */
+#define RFCSR7_RF_TUNING		FIELD8(0x01)
+
+/*
+ * RFCSR 12:
+ */
+#define RFCSR12_TX_POWER		FIELD8(0x1f)
+
+/*
+ * RFCSR 22:
+ */
+#define RFCSR22_BASEBAND_LOOPBACK	FIELD8(0x01)
+
+/*
+ * RFCSR 23:
+ */
+#define RFCSR23_FREQ_OFFSET		FIELD8(0x7f)
+
+/*
+ * RFCSR 30:
+ */
+#define RFCSR30_RF_CALIBRATION		FIELD8(0x80)
 
 /*
  * RF registers