drivers/net/wireless/realtek/rtl818x/rtl8180/sa2400.c

Source file repositories/reference/linux-study-clean/drivers/net/wireless/realtek/rtl818x/rtl8180/sa2400.c

File Facts

System
Linux kernel
Corpus path
drivers/net/wireless/realtek/rtl818x/rtl8180/sa2400.c
Extension
.c
Size
5828 bytes
Lines
226
Domain
Driver Families
Bucket
drivers/net
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0-only

/*
 * Radio tuning for Philips SA2400 on RTL8180
 *
 * Copyright 2007 Andrea Merello <andrea.merello@gmail.com>
 *
 * Code from the BSD driver and the rtl8181 project have been
 * very useful to understand certain things
 *
 * I want to thanks the Authors of such projects and the Ndiswrapper
 * project Authors.
 *
 * A special Big Thanks also is for all people who donated me cards,
 * making possible the creation of the original rtl8180 driver
 * from which this code is derived!
 */

#include <linux/pci.h>
#include <linux/delay.h>
#include <net/mac80211.h>

#include "rtl8180.h"
#include "sa2400.h"

static const u32 sa2400_chan[] = {
	0x00096c, /* ch1 */
	0x080970,
	0x100974,
	0x180978,
	0x000980,
	0x080984,
	0x100988,
	0x18098c,
	0x000994,
	0x080998,
	0x10099c,
	0x1809a0,
	0x0009a8,
	0x0009b4, /* ch 14 */
};

static void write_sa2400(struct ieee80211_hw *dev, u8 addr, u32 data)
{
	struct rtl8180_priv *priv = dev->priv;
	u32 phy_config;

	/* MAC will bang bits to the sa2400. sw 3-wire is NOT used */
	phy_config = 0xb0000000;

	phy_config |= ((u32)(addr & 0xf)) << 24;
	phy_config |= data & 0xffffff;

	rtl818x_iowrite32(priv,
		(__le32 __iomem *) &priv->map->RFPinsOutput, phy_config);

	msleep(3);
}

static void sa2400_write_phy_antenna(struct ieee80211_hw *dev, short chan)
{
	struct rtl8180_priv *priv = dev->priv;
	u8 ant = SA2400_ANTENNA;

	if (priv->rfparam & RF_PARAM_ANTBDEFAULT)
		ant |= BB_ANTENNA_B;

	if (chan == 14)
		ant |= BB_ANTATTEN_CHAN14;

	rtl8180_write_phy(dev, 0x10, ant);

}

static u8 sa2400_rf_rssi_map[] = {
	0x64, 0x64, 0x63, 0x62, 0x61, 0x60, 0x5f, 0x5e,
	0x5d, 0x5c, 0x5b, 0x5a, 0x57, 0x54, 0x52, 0x50,
	0x4e, 0x4c, 0x4a, 0x48, 0x46, 0x44, 0x41, 0x3f,
	0x3c, 0x3a, 0x37, 0x36, 0x36, 0x1c, 0x1c, 0x1b,
	0x1b, 0x1a, 0x1a, 0x19, 0x19, 0x18, 0x18, 0x17,
	0x17, 0x16, 0x16, 0x15, 0x15, 0x14, 0x14, 0x13,
	0x13, 0x12, 0x12, 0x11, 0x11, 0x10, 0x10, 0x0f,
	0x0f, 0x0e, 0x0e, 0x0d, 0x0d, 0x0c, 0x0c, 0x0b,
	0x0b, 0x0a, 0x0a, 0x09, 0x09, 0x08, 0x08, 0x07,
	0x07, 0x06, 0x06, 0x05, 0x04, 0x03, 0x02,
};

static u8 sa2400_rf_calc_rssi(u8 agc, u8 sq)
{
	if (sq == 0x80)

Annotation

Implementation Notes