Initial import

1 files changed, 831 insertions, 0 deletions

diff --git a/drivers/staging/vt6656/baseband.c b/drivers/staging/vt6656/baseband.c
new file mode 100644
index 000000000..26b16772f
--- /dev/null
+++ b/drivers/staging/vt6656/baseband.c
@@ -0,0 +1,831 @@
+/*
+ * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ *
+ * File: baseband.c
+ *
+ * Purpose: Implement functions to access baseband
+ *
+ * Author: Jerry Chen
+ *
+ * Date: Jun. 5, 2002
+ *
+ * Functions:
+ *	vnt_get_frame_time	- Calculate data frame transmitting time
+ *	vnt_get_phy_field	- Calculate PhyLength, PhyService and Phy
+ *				  Signal parameter for baseband Tx
+ *	vnt_vt3184_init		- VIA VT3184 baseband chip init code
+ *
+ * Revision History:
+ *
+ *
+ */
+
+#include "mac.h"
+#include "baseband.h"
+#include "rf.h"
+#include "usbpipe.h"
+
+static u8 vnt_vt3184_agc[] = {
+	0x00, 0x00, 0x02, 0x02, 0x04, 0x04, 0x06, 0x06,
+	0x08, 0x08, 0x0a, 0x0a, 0x0c, 0x0c, 0x0e, 0x0e, /* 0x0f */
+	0x10, 0x10, 0x12, 0x12, 0x14, 0x14, 0x16, 0x16,
+	0x18, 0x18, 0x1a, 0x1a, 0x1c, 0x1c, 0x1e, 0x1e, /* 0x1f */
+	0x20, 0x20, 0x22, 0x22, 0x24, 0x24, 0x26, 0x26,
+	0x28, 0x28, 0x2a, 0x2a, 0x2c, 0x2c, 0x2e, 0x2e, /* 0x2f */
+	0x30, 0x30, 0x32, 0x32, 0x34, 0x34, 0x36, 0x36,
+	0x38, 0x38, 0x3a, 0x3a, 0x3c, 0x3c, 0x3e, 0x3e  /* 0x3f */
+};
+
+static u8 vnt_vt3184_al2230[] = {
+	0x31, 0x00, 0x00, 0x00, 0x00, 0x80, 0x00, 0x00,
+	0x70, 0x45, 0x2a, 0x76, 0x00, 0x00, 0x80, 0x00, /* 0x0f */
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x8e, 0x0a, 0x00, 0x00, 0x00, /* 0x1f */
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x4a, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x4a, 0x00, 0x0c, /* 0x2f */
+	0x26, 0x5b, 0x00, 0x00, 0x00, 0x00, 0xaa, 0xaa,
+	0xff, 0xff, 0x79, 0x00, 0x00, 0x0b, 0x48, 0x04, /* 0x3f */
+	0x00, 0x08, 0x00, 0x08, 0x08, 0x14, 0x05, 0x09,
+	0x00, 0x00, 0x00, 0x00, 0x09, 0x73, 0x00, 0xc5, /* 0x4f */
+	0x00, 0x19, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0xd0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x5f */
+	0xe4, 0x80, 0x00, 0x00, 0x00, 0x00, 0x98, 0x0a,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x01, 0x00, /* 0x6f */
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x7f */
+	0x8c, 0x01, 0x09, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x08, 0x00, 0x1f, 0xb7, 0x88, 0x47, 0xaa, 0x00, /* 0x8f */
+	0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xeb,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, /* 0x9f */
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00,
+	0x18, 0x00, 0x00, 0x00, 0x00, 0x15, 0x00, 0x18, /* 0xaf */
+	0x38, 0x30, 0x00, 0x00, 0xff, 0x0f, 0xe4, 0xe2,
+	0x00, 0x00, 0x00, 0x03, 0x01, 0x00, 0x00, 0x00, /* 0xbf */
+	0x18, 0x20, 0x07, 0x18, 0xff, 0xff, 0x0e, 0x0a,
+	0x0e, 0x00, 0x82, 0xa7, 0x3c, 0x10, 0x30, 0x05, /* 0xcf */
+	0x40, 0x12, 0x00, 0x00, 0x10, 0x28, 0x80, 0x2a,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xdf */
+	0x00, 0xf3, 0x00, 0x00, 0x00, 0x10, 0x00, 0x12,
+	0x00, 0xf4, 0x00, 0xff, 0x79, 0x20, 0x30, 0x05, /* 0xef */
+	0x00, 0x3e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00  /* 0xff */
+};
+
+/* {{RobertYu:20060515, new BB setting for VT3226D0 */
+static u8 vnt_vt3184_vt3226d0[] = {
+	0x31, 0x00, 0x00, 0x00, 0x00, 0x80, 0x00, 0x00,
+	0x70, 0x45, 0x2a, 0x76, 0x00, 0x00, 0x80, 0x00, /* 0x0f */
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x8e, 0x0a, 0x00, 0x00, 0x00, /* 0x1f */
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x4a, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x4a, 0x00, 0x0c, /* 0x2f */
+	0x26, 0x5b, 0x00, 0x00, 0x00, 0x00, 0xaa, 0xaa,
+	0xff, 0xff, 0x79, 0x00, 0x00, 0x0b, 0x48, 0x04, /* 0x3f */
+	0x00, 0x08, 0x00, 0x08, 0x08, 0x14, 0x05, 0x09,
+	0x00, 0x00, 0x00, 0x00, 0x09, 0x73, 0x00, 0xc5, /* 0x4f */
+	0x00, 0x19, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0xd0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x5f */
+	0xe4, 0x80, 0x00, 0x00, 0x00, 0x00, 0x98, 0x0a,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x01, 0x00, /* 0x6f */
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x7f */
+	0x8c, 0x01, 0x09, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x08, 0x00, 0x1f, 0xb7, 0x88, 0x47, 0xaa, 0x00, /* 0x8f */
+	0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xeb,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, /* 0x9f */
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00,
+	0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, /* 0xaf */
+	0x38, 0x30, 0x00, 0x00, 0xff, 0x0f, 0xe4, 0xe2,
+	0x00, 0x00, 0x00, 0x03, 0x01, 0x00, 0x00, 0x00, /* 0xbf */
+	0x18, 0x20, 0x07, 0x18, 0xff, 0xff, 0x10, 0x0a,
+	0x0e, 0x00, 0x84, 0xa7, 0x3c, 0x10, 0x24, 0x05, /* 0xcf */
+	0x40, 0x12, 0x00, 0x00, 0x10, 0x28, 0x80, 0x2a,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xdf */
+	0x00, 0xf3, 0x00, 0x00, 0x00, 0x10, 0x00, 0x10,
+	0x00, 0xf4, 0x00, 0xff, 0x79, 0x20, 0x30, 0x08, /* 0xef */
+	0x00, 0x3e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00  /* 0xff */
+};
+
+static const u16 vnt_frame_time[MAX_RATE] = {
+	10, 20, 55, 110, 24, 36, 48, 72, 96, 144, 192, 216
+};
+
+/*
+ * Description: Calculate data frame transmitting time
+ *
+ * Parameters:
+ *  In:
+ *	preamble_type	- Preamble Type
+ *	pkt_type	- PK_TYPE_11A, PK_TYPE_11B, PK_TYPE_11GB, PK_TYPE_11GA
+ *	frame_length	- Baseband Type
+ *	tx_rate		- Tx Rate
+ *  Out:
+ *
+ * Return Value: FrameTime
+ *
+ */
+unsigned int vnt_get_frame_time(u8 preamble_type, u8 pkt_type,
+	unsigned int frame_length, u16 tx_rate)
+{
+	unsigned int frame_time;
+	unsigned int preamble;
+	unsigned int tmp;
+	unsigned int rate = 0;
+
+	if (tx_rate > RATE_54M)
+		return 0;
+
+	rate = (unsigned int)vnt_frame_time[tx_rate];
+
+	if (tx_rate <= 3) {
+		if (preamble_type == 1)
+			preamble = 96;
+		else
+			preamble = 192;
+
+		frame_time = (frame_length * 80) / rate;
+		tmp = (frame_time * rate) / 80;
+
+		if (frame_length != tmp)
+			frame_time++;
+
+		return preamble + frame_time;
+	}
+	frame_time = (frame_length * 8 + 22) / rate;
+	tmp = ((frame_time * rate) - 22) / 8;
+
+	if (frame_length != tmp)
+		frame_time++;
+
+	frame_time = frame_time * 4;
+
+	if (pkt_type != PK_TYPE_11A)
+		frame_time += 6;
+	return 20 + frame_time;
+}
+
+/*
+ * Description: Calculate Length, Service, and Signal fields of Phy for Tx
+ *
+ * Parameters:
+ *  In:
+ *      priv         - Device Structure
+ *      frame_length   - Tx Frame Length
+ *      tx_rate           - Tx Rate
+ *  Out:
+ *	struct vnt_phy_field *phy
+ *		- pointer to Phy Length field
+ *		- pointer to Phy Service field
+ *		- pointer to Phy Signal field
+ *
+ * Return Value: none
+ *
+ */
+void vnt_get_phy_field(struct vnt_private *priv, u32 frame_length,
+	u16 tx_rate, u8 pkt_type, struct vnt_phy_field *phy)
+{
+	u32 bit_count;
+	u32 count = 0;
+	u32 tmp;
+	int ext_bit;
+	u8 preamble_type = priv->preamble_type;
+
+	bit_count = frame_length * 8;
+	ext_bit = false;
+
+	switch (tx_rate) {
+	case RATE_1M:
+		count = bit_count;
+
+		phy->signal = 0x00;
+
+		break;
+	case RATE_2M:
+		count = bit_count / 2;
+
+		if (preamble_type == 1)
+			phy->signal = 0x09;
+		else
+			phy->signal = 0x01;
+
+		break;
+	case RATE_5M:
+		count = (bit_count * 10) / 55;
+		tmp = (count * 55) / 10;
+
+		if (tmp != bit_count)
+			count++;
+
+		if (preamble_type == 1)
+			phy->signal = 0x0a;
+		else
+			phy->signal = 0x02;
+
+		break;
+	case RATE_11M:
+		count = bit_count / 11;
+		tmp = count * 11;
+
+		if (tmp != bit_count) {
+			count++;
+
+			if ((bit_count - tmp) <= 3)
+				ext_bit = true;
+		}
+
+		if (preamble_type == 1)
+			phy->signal = 0x0b;
+		else
+			phy->signal = 0x03;
+
+		break;
+	case RATE_6M:
+		if (pkt_type == PK_TYPE_11A)
+			phy->signal = 0x9b;
+		else
+			phy->signal = 0x8b;
+
+		break;
+	case RATE_9M:
+		if (pkt_type == PK_TYPE_11A)
+			phy->signal = 0x9f;
+		else
+			phy->signal = 0x8f;
+
+		break;
+	case RATE_12M:
+		if (pkt_type == PK_TYPE_11A)
+			phy->signal = 0x9a;
+		else
+			phy->signal = 0x8a;
+
+		break;
+	case RATE_18M:
+		if (pkt_type == PK_TYPE_11A)
+			phy->signal = 0x9e;
+		else
+			phy->signal = 0x8e;
+
+		break;
+	case RATE_24M:
+		if (pkt_type == PK_TYPE_11A)
+			phy->signal = 0x99;
+		else
+			phy->signal = 0x89;
+
+		break;
+	case RATE_36M:
+		if (pkt_type == PK_TYPE_11A)
+			phy->signal = 0x9d;
+		else
+			phy->signal = 0x8d;
+
+		break;
+	case RATE_48M:
+		if (pkt_type == PK_TYPE_11A)
+			phy->signal = 0x98;
+		else
+			phy->signal = 0x88;
+
+		break;
+	case RATE_54M:
+		if (pkt_type == PK_TYPE_11A)
+			phy->signal = 0x9c;
+		else
+			phy->signal = 0x8c;
+		break;
+	default:
+		if (pkt_type == PK_TYPE_11A)
+			phy->signal = 0x9c;
+		else
+			phy->signal = 0x8c;
+		break;
+	}
+
+	if (pkt_type == PK_TYPE_11B) {
+		phy->service = 0x00;
+		if (ext_bit)
+			phy->service |= 0x80;
+		phy->len = cpu_to_le16((u16)count);
+	} else {
+		phy->service = 0x00;
+		phy->len = cpu_to_le16((u16)frame_length);
+	}
+}
+
+/*
+ * Description: Set Antenna mode
+ *
+ * Parameters:
+ *  In:
+ *	priv		- Device Structure
+ *	antenna_mode	- Antenna Mode
+ *  Out:
+ *      none
+ *
+ * Return Value: none
+ *
+ */
+void vnt_set_antenna_mode(struct vnt_private *priv, u8 antenna_mode)
+{
+	switch (antenna_mode) {
+	case ANT_TXA:
+	case ANT_TXB:
+		break;
+	case ANT_RXA:
+		priv->bb_rx_conf &= 0xFC;
+		break;
+	case ANT_RXB:
+		priv->bb_rx_conf &= 0xFE;
+		priv->bb_rx_conf |= 0x02;
+		break;
+	}
+
+	vnt_control_out(priv, MESSAGE_TYPE_SET_ANTMD,
+		(u16)antenna_mode, 0, 0, NULL);
+}
+
+/*
+ * Description: Set Antenna mode
+ *
+ * Parameters:
+ *  In:
+ *      pDevice          - Device Structure
+ *      byAntennaMode    - Antenna Mode
+ *  Out:
+ *      none
+ *
+ * Return Value: none
+ *
+ */
+
+int vnt_vt3184_init(struct vnt_private *priv)
+{
+	int status;
+	u16 length;
+	u8 *addr;
+	u8 *agc;
+	u16 length_agc;
+	u8 array[256];
+	u8 data;
+
+	status = vnt_control_in(priv, MESSAGE_TYPE_READ, 0,
+		MESSAGE_REQUEST_EEPROM, EEP_MAX_CONTEXT_SIZE,
+						priv->eeprom);
+	if (status != STATUS_SUCCESS)
+		return false;
+
+	priv->rf_type = priv->eeprom[EEP_OFS_RFTYPE];
+
+	dev_dbg(&priv->usb->dev, "RF Type %d\n", priv->rf_type);
+
+	if ((priv->rf_type == RF_AL2230) ||
+				(priv->rf_type == RF_AL2230S)) {
+		priv->bb_rx_conf = vnt_vt3184_al2230[10];
+		length = sizeof(vnt_vt3184_al2230);
+		addr = vnt_vt3184_al2230;
+		agc = vnt_vt3184_agc;
+		length_agc = sizeof(vnt_vt3184_agc);
+
+		priv->bb_vga[0] = 0x1C;
+		priv->bb_vga[1] = 0x10;
+		priv->bb_vga[2] = 0x0;
+		priv->bb_vga[3] = 0x0;
+
+	} else if (priv->rf_type == RF_AIROHA7230) {
+		priv->bb_rx_conf = vnt_vt3184_al2230[10];
+		length = sizeof(vnt_vt3184_al2230);
+		addr = vnt_vt3184_al2230;
+		agc = vnt_vt3184_agc;
+		length_agc = sizeof(vnt_vt3184_agc);
+
+		addr[0xd7] = 0x06;
+
+		priv->bb_vga[0] = 0x1c;
+		priv->bb_vga[1] = 0x10;
+		priv->bb_vga[2] = 0x0;
+		priv->bb_vga[3] = 0x0;
+
+	} else if ((priv->rf_type == RF_VT3226) ||
+			(priv->rf_type == RF_VT3226D0)) {
+		priv->bb_rx_conf = vnt_vt3184_vt3226d0[10];
+		length = sizeof(vnt_vt3184_vt3226d0);
+		addr = vnt_vt3184_vt3226d0;
+		agc = vnt_vt3184_agc;
+		length_agc = sizeof(vnt_vt3184_agc);
+
+		priv->bb_vga[0] = 0x20;
+		priv->bb_vga[1] = 0x10;
+		priv->bb_vga[2] = 0x0;
+		priv->bb_vga[3] = 0x0;
+
+		/* Fix VT3226 DFC system timing issue */
+		vnt_mac_reg_bits_on(priv, MAC_REG_SOFTPWRCTL2,
+				    SOFTPWRCTL_RFLEOPT);
+	} else if (priv->rf_type == RF_VT3342A0) {
+		priv->bb_rx_conf = vnt_vt3184_vt3226d0[10];
+		length = sizeof(vnt_vt3184_vt3226d0);
+		addr = vnt_vt3184_vt3226d0;
+		agc = vnt_vt3184_agc;
+		length_agc = sizeof(vnt_vt3184_agc);
+
+		priv->bb_vga[0] = 0x20;
+		priv->bb_vga[1] = 0x10;
+		priv->bb_vga[2] = 0x0;
+		priv->bb_vga[3] = 0x0;
+
+		/* Fix VT3226 DFC system timing issue */
+		vnt_mac_reg_bits_on(priv, MAC_REG_SOFTPWRCTL2,
+				    SOFTPWRCTL_RFLEOPT);
+	} else {
+		return true;
+	}
+
+	memcpy(array, addr, length);
+
+	vnt_control_out(priv, MESSAGE_TYPE_WRITE, 0,
+		MESSAGE_REQUEST_BBREG, length, array);
+
+	memcpy(array, agc, length_agc);
+
+	vnt_control_out(priv, MESSAGE_TYPE_WRITE, 0,
+		MESSAGE_REQUEST_BBAGC, length_agc, array);
+
+	if ((priv->rf_type == RF_VT3226) ||
+		(priv->rf_type == RF_VT3342A0)) {
+		vnt_control_out_u8(priv, MESSAGE_REQUEST_MACREG,
+						MAC_REG_ITRTMSET, 0x23);
+		vnt_mac_reg_bits_on(priv, MAC_REG_PAPEDELAY, 0x01);
+	} else if (priv->rf_type == RF_VT3226D0) {
+		vnt_control_out_u8(priv, MESSAGE_REQUEST_MACREG,
+						MAC_REG_ITRTMSET, 0x11);
+		vnt_mac_reg_bits_on(priv, MAC_REG_PAPEDELAY, 0x01);
+	}
+
+	vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0x04, 0x7f);
+	vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0x0d, 0x01);
+
+	vnt_rf_table_download(priv);
+
+	/* Fix for TX USB resets from vendors driver */
+	vnt_control_in(priv, MESSAGE_TYPE_READ, USB_REG4,
+		MESSAGE_REQUEST_MEM, sizeof(data), &data);
+
+	data |= 0x2;
+
+	vnt_control_out(priv, MESSAGE_TYPE_WRITE, USB_REG4,
+		MESSAGE_REQUEST_MEM, sizeof(data), &data);
+
+	return true;
+}
+
+/*
+ * Description: Set ShortSlotTime mode
+ *
+ * Parameters:
+ *  In:
+ *	priv	- Device Structure
+ *  Out:
+ *      none
+ *
+ * Return Value: none
+ *
+ */
+void vnt_set_short_slot_time(struct vnt_private *priv)
+{
+	u8 bb_vga = 0;
+
+	if (priv->short_slot_time)
+		priv->bb_rx_conf &= 0xdf;
+	else
+		priv->bb_rx_conf |= 0x20;
+
+	vnt_control_in_u8(priv, MESSAGE_REQUEST_BBREG, 0xe7, &bb_vga);
+
+	if (bb_vga == priv->bb_vga[0])
+		priv->bb_rx_conf |= 0x20;
+
+	vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0x0a, priv->bb_rx_conf);
+}
+
+void vnt_set_vga_gain_offset(struct vnt_private *priv, u8 data)
+{
+
+	vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0xE7, data);
+
+	/* patch for 3253B0 Baseband with Cardbus module */
+	if (priv->short_slot_time)
+		priv->bb_rx_conf &= 0xdf; /* 1101 1111 */
+	else
+		priv->bb_rx_conf |= 0x20; /* 0010 0000 */
+
+	vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0x0a, priv->bb_rx_conf);
+}
+
+/*
+ * Description: vnt_set_deep_sleep
+ *
+ * Parameters:
+ *  In:
+ *	priv	- Device Structure
+ *  Out:
+ *      none
+ *
+ * Return Value: none
+ *
+ */
+void vnt_set_deep_sleep(struct vnt_private *priv)
+{
+	vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0x0c, 0x17);/* CR12 */
+	vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0x0d, 0xB9);/* CR13 */
+}
+
+void vnt_exit_deep_sleep(struct vnt_private *priv)
+{
+	vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0x0c, 0x00);/* CR12 */
+	vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0x0d, 0x01);/* CR13 */
+}
+
+void vnt_update_pre_ed_threshold(struct vnt_private *priv, int scanning)
+{
+	u8 cr_201 = 0x0, cr_206 = 0x0;
+	u8 ed_inx = priv->bb_pre_ed_index;
+
+	switch (priv->rf_type) {
+	case RF_AL2230:
+	case RF_AL2230S:
+	case RF_AIROHA7230:
+		if (scanning) { /* Max sensitivity */
+			ed_inx = 0;
+			cr_206 = 0x30;
+			break;
+		}
+
+		if (priv->bb_pre_ed_rssi <= 45) {
+			ed_inx = 20;
+			cr_201 = 0xff;
+		} else if (priv->bb_pre_ed_rssi <= 46) {
+			ed_inx = 19;
+			cr_201 = 0x1a;
+		} else if (priv->bb_pre_ed_rssi <= 47) {
+			ed_inx = 18;
+			cr_201 = 0x15;
+		} else if (priv->bb_pre_ed_rssi <= 49) {
+			ed_inx = 17;
+			cr_201 = 0xe;
+		} else if (priv->bb_pre_ed_rssi <= 51) {
+			ed_inx = 16;
+			cr_201 = 0x9;
+		} else if (priv->bb_pre_ed_rssi <= 53) {
+			ed_inx = 15;
+			cr_201 = 0x6;
+		} else if (priv->bb_pre_ed_rssi <= 55) {
+			ed_inx = 14;
+			cr_201 = 0x3;
+		} else if (priv->bb_pre_ed_rssi <= 56) {
+			ed_inx = 13;
+			cr_201 = 0x2;
+			cr_206 = 0xa0;
+		} else if (priv->bb_pre_ed_rssi <= 57) {
+			ed_inx = 12;
+			cr_201 = 0x2;
+			cr_206 = 0x20;
+		} else if (priv->bb_pre_ed_rssi <= 58) {
+			ed_inx = 11;
+			cr_201 = 0x1;
+			cr_206 = 0xa0;
+		} else if (priv->bb_pre_ed_rssi <= 59) {
+			ed_inx = 10;
+			cr_201 = 0x1;
+			cr_206 = 0x54;
+		} else if (priv->bb_pre_ed_rssi <= 60) {
+			ed_inx = 9;
+			cr_201 = 0x1;
+			cr_206 = 0x18;
+		} else if (priv->bb_pre_ed_rssi <= 61) {
+			ed_inx = 8;
+			cr_206 = 0xe3;
+		} else if (priv->bb_pre_ed_rssi <= 62) {
+			ed_inx = 7;
+			cr_206 = 0xb9;
+		} else if (priv->bb_pre_ed_rssi <= 63) {
+			ed_inx = 6;
+			cr_206 = 0x93;
+		} else if (priv->bb_pre_ed_rssi <= 64) {
+			ed_inx = 5;
+			cr_206 = 0x79;
+		} else if (priv->bb_pre_ed_rssi <= 65) {
+			ed_inx = 4;
+			cr_206 = 0x62;
+		} else if (priv->bb_pre_ed_rssi <= 66) {
+			ed_inx = 3;
+			cr_206 = 0x51;
+		} else if (priv->bb_pre_ed_rssi <= 67) {
+			ed_inx = 2;
+			cr_206 = 0x43;
+		} else if (priv->bb_pre_ed_rssi <= 68) {
+			ed_inx = 1;
+			cr_206 = 0x36;
+		} else {
+			ed_inx = 0;
+			cr_206 = 0x30;
+		}
+		break;
+
+	case RF_VT3226:
+	case RF_VT3226D0:
+		if (scanning)	{ /* Max sensitivity */
+			ed_inx = 0;
+			cr_206 = 0x24;
+			break;
+		}
+
+		if (priv->bb_pre_ed_rssi <= 41) {
+			ed_inx = 22;
+			cr_201 = 0xff;
+		} else if (priv->bb_pre_ed_rssi <= 42) {
+			ed_inx = 21;
+			cr_201 = 0x36;
+		} else if (priv->bb_pre_ed_rssi <= 43) {
+			ed_inx = 20;
+			cr_201 = 0x26;
+		} else if (priv->bb_pre_ed_rssi <= 45) {
+			ed_inx = 19;
+			cr_201 = 0x18;
+		} else if (priv->bb_pre_ed_rssi <= 47) {
+			ed_inx = 18;
+			cr_201 = 0x11;
+		} else if (priv->bb_pre_ed_rssi <= 49) {
+			ed_inx = 17;
+			cr_201 = 0xa;
+		} else if (priv->bb_pre_ed_rssi <= 51) {
+			ed_inx = 16;
+			cr_201 = 0x7;
+		} else if (priv->bb_pre_ed_rssi <= 53) {
+			ed_inx = 15;
+			cr_201 = 0x4;
+		} else if (priv->bb_pre_ed_rssi <= 55) {
+			ed_inx = 14;
+			cr_201 = 0x2;
+			cr_206 = 0xc0;
+		} else if (priv->bb_pre_ed_rssi <= 56) {
+			ed_inx = 13;
+			cr_201 = 0x2;
+			cr_206 = 0x30;
+		} else if (priv->bb_pre_ed_rssi <= 57) {
+			ed_inx = 12;
+			cr_201 = 0x1;
+			cr_206 = 0xb0;
+		} else if (priv->bb_pre_ed_rssi <= 58) {
+			ed_inx = 11;
+			cr_201 = 0x1;
+			cr_206 = 0x70;
+		} else if (priv->bb_pre_ed_rssi <= 59) {
+			ed_inx = 10;
+			cr_201 = 0x1;
+			cr_206 = 0x30;
+		} else if (priv->bb_pre_ed_rssi <= 60) {
+			ed_inx = 9;
+			cr_206 = 0xea;
+		} else if (priv->bb_pre_ed_rssi <= 61) {
+			ed_inx = 8;
+			cr_206 = 0xc0;
+		} else if (priv->bb_pre_ed_rssi <= 62) {
+			ed_inx = 7;
+			cr_206 = 0x9c;
+		} else if (priv->bb_pre_ed_rssi <= 63) {
+			ed_inx = 6;
+			cr_206 = 0x80;
+		} else if (priv->bb_pre_ed_rssi <= 64) {
+			ed_inx = 5;
+			cr_206 = 0x68;
+		} else if (priv->bb_pre_ed_rssi <= 65) {
+			ed_inx = 4;
+			cr_206 = 0x52;
+		} else if (priv->bb_pre_ed_rssi <= 66) {
+			ed_inx = 3;
+			cr_206 = 0x43;
+		} else if (priv->bb_pre_ed_rssi <= 67) {
+			ed_inx = 2;
+			cr_206 = 0x36;
+		} else if (priv->bb_pre_ed_rssi <= 68) {
+			ed_inx = 1;
+			cr_206 = 0x2d;
+		} else {
+			ed_inx = 0;
+			cr_206 = 0x24;
+		}
+		break;
+
+	case RF_VT3342A0:
+		if (scanning) { /* need Max sensitivity */
+			ed_inx = 0;
+			cr_206 = 0x38;
+			break;
+		}
+
+		if (priv->bb_pre_ed_rssi <= 41) {
+			ed_inx = 20;
+			cr_201 = 0xff;
+		} else if (priv->bb_pre_ed_rssi <= 42) {
+			ed_inx = 19;
+			cr_201 = 0x36;
+		} else if (priv->bb_pre_ed_rssi <= 43) {
+			ed_inx = 18;
+			cr_201 = 0x26;
+		} else if (priv->bb_pre_ed_rssi <= 45) {
+			ed_inx = 17;
+			cr_201 = 0x18;
+		} else if (priv->bb_pre_ed_rssi <= 47) {
+			ed_inx = 16;
+			cr_201 = 0x11;
+		} else if (priv->bb_pre_ed_rssi <= 49) {
+			ed_inx = 15;
+			cr_201 = 0xa;
+		} else if (priv->bb_pre_ed_rssi <= 51) {
+			ed_inx = 14;
+			cr_201 = 0x7;
+		} else if (priv->bb_pre_ed_rssi <= 53) {
+			ed_inx = 13;
+			cr_201 = 0x4;
+		} else if (priv->bb_pre_ed_rssi <= 55) {
+			ed_inx = 12;
+			cr_201 = 0x2;
+			cr_206 = 0xc0;
+		} else if (priv->bb_pre_ed_rssi <= 56) {
+			ed_inx = 11;
+			cr_201 = 0x2;
+			cr_206 = 0x30;
+		} else if (priv->bb_pre_ed_rssi <= 57) {
+			ed_inx = 10;
+			cr_201 = 0x1;
+			cr_206 = 0xb0;
+		} else if (priv->bb_pre_ed_rssi <= 58) {
+			ed_inx = 9;
+			cr_201 = 0x1;
+			cr_206 = 0x70;
+		} else if (priv->bb_pre_ed_rssi <= 59) {
+			ed_inx = 8;
+			cr_201 = 0x1;
+			cr_206 = 0x30;
+		} else if (priv->bb_pre_ed_rssi <= 60) {
+			ed_inx = 7;
+			cr_206 = 0xea;
+		} else if (priv->bb_pre_ed_rssi <= 61) {
+			ed_inx = 6;
+			cr_206 = 0xc0;
+		} else if (priv->bb_pre_ed_rssi <= 62) {
+			ed_inx = 5;
+			cr_206 = 0x9c;
+		} else if (priv->bb_pre_ed_rssi <= 63) {
+			ed_inx = 4;
+			cr_206 = 0x80;
+		} else if (priv->bb_pre_ed_rssi <= 64) {
+			ed_inx = 3;
+			cr_206 = 0x68;
+		} else if (priv->bb_pre_ed_rssi <= 65) {
+			ed_inx = 2;
+			cr_206 = 0x52;
+		} else if (priv->bb_pre_ed_rssi <= 66) {
+			ed_inx = 1;
+			cr_206 = 0x43;
+		} else {
+			ed_inx = 0;
+			cr_206 = 0x38;
+		}
+		break;
+
+	}
+
+	if (ed_inx == priv->bb_pre_ed_index && !scanning)
+		return;
+
+	priv->bb_pre_ed_index = ed_inx;
+
+	dev_dbg(&priv->usb->dev, "%s bb_pre_ed_rssi %d\n",
+					__func__, priv->bb_pre_ed_rssi);
+
+	if (!cr_201 && !cr_206)
+		return;
+
+	vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0xc9, cr_201);
+	vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0xce, cr_206);
+}
+