linux/arch/mips/ath79/dev-wmac.c
Gabor Juhos e9c0d0aaa3 MIPS: ath79: add WMAC registration code for the QCA955X SoCs
The SoC has a built-in wireless MAC. Register a platform
device for that to make it usable with the ath9k driver.

Cc: Rodriguez, Luis <rodrigue@qca.qualcomm.com>
Cc: Giori, Kathy <kgiori@qca.qualcomm.com>
Cc: QCA Linux Team <qca-linux-team@qca.qualcomm.com>
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/4956/
Signed-off-by: John Crispin <blogic@openwrt.org>
2013-02-19 09:36:30 +01:00

156 lines
3.9 KiB
C

/*
* Atheros AR913X/AR933X SoC built-in WMAC device support
*
* Copyright (C) 2010-2011 Jaiganesh Narayanan <jnarayanan@atheros.com>
* Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
*
* Parts of this file are based on Atheros 2.6.15/2.6.31 BSP
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*/
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/irq.h>
#include <linux/platform_device.h>
#include <linux/ath9k_platform.h>
#include <asm/mach-ath79/ath79.h>
#include <asm/mach-ath79/ar71xx_regs.h>
#include "dev-wmac.h"
static struct ath9k_platform_data ath79_wmac_data;
static struct resource ath79_wmac_resources[] = {
{
/* .start and .end fields are filled dynamically */
.flags = IORESOURCE_MEM,
}, {
/* .start and .end fields are filled dynamically */
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device ath79_wmac_device = {
.name = "ath9k",
.id = -1,
.resource = ath79_wmac_resources,
.num_resources = ARRAY_SIZE(ath79_wmac_resources),
.dev = {
.platform_data = &ath79_wmac_data,
},
};
static void __init ar913x_wmac_setup(void)
{
/* reset the WMAC */
ath79_device_reset_set(AR913X_RESET_AMBA2WMAC);
mdelay(10);
ath79_device_reset_clear(AR913X_RESET_AMBA2WMAC);
mdelay(10);
ath79_wmac_resources[0].start = AR913X_WMAC_BASE;
ath79_wmac_resources[0].end = AR913X_WMAC_BASE + AR913X_WMAC_SIZE - 1;
ath79_wmac_resources[1].start = ATH79_CPU_IRQ(2);
ath79_wmac_resources[1].end = ATH79_CPU_IRQ(2);
}
static int ar933x_wmac_reset(void)
{
ath79_device_reset_set(AR933X_RESET_WMAC);
ath79_device_reset_clear(AR933X_RESET_WMAC);
return 0;
}
static int ar933x_r1_get_wmac_revision(void)
{
return ath79_soc_rev;
}
static void __init ar933x_wmac_setup(void)
{
u32 t;
ar933x_wmac_reset();
ath79_wmac_device.name = "ar933x_wmac";
ath79_wmac_resources[0].start = AR933X_WMAC_BASE;
ath79_wmac_resources[0].end = AR933X_WMAC_BASE + AR933X_WMAC_SIZE - 1;
ath79_wmac_resources[1].start = ATH79_CPU_IRQ(2);
ath79_wmac_resources[1].end = ATH79_CPU_IRQ(2);
t = ath79_reset_rr(AR933X_RESET_REG_BOOTSTRAP);
if (t & AR933X_BOOTSTRAP_REF_CLK_40)
ath79_wmac_data.is_clk_25mhz = false;
else
ath79_wmac_data.is_clk_25mhz = true;
if (ath79_soc_rev == 1)
ath79_wmac_data.get_mac_revision = ar933x_r1_get_wmac_revision;
ath79_wmac_data.external_reset = ar933x_wmac_reset;
}
static void ar934x_wmac_setup(void)
{
u32 t;
ath79_wmac_device.name = "ar934x_wmac";
ath79_wmac_resources[0].start = AR934X_WMAC_BASE;
ath79_wmac_resources[0].end = AR934X_WMAC_BASE + AR934X_WMAC_SIZE - 1;
ath79_wmac_resources[1].start = ATH79_IP2_IRQ(1);
ath79_wmac_resources[1].end = ATH79_IP2_IRQ(1);
t = ath79_reset_rr(AR934X_RESET_REG_BOOTSTRAP);
if (t & AR934X_BOOTSTRAP_REF_CLK_40)
ath79_wmac_data.is_clk_25mhz = false;
else
ath79_wmac_data.is_clk_25mhz = true;
}
static void qca955x_wmac_setup(void)
{
u32 t;
ath79_wmac_device.name = "qca955x_wmac";
ath79_wmac_resources[0].start = QCA955X_WMAC_BASE;
ath79_wmac_resources[0].end = QCA955X_WMAC_BASE + QCA955X_WMAC_SIZE - 1;
ath79_wmac_resources[1].start = ATH79_IP2_IRQ(1);
ath79_wmac_resources[1].end = ATH79_IP2_IRQ(1);
t = ath79_reset_rr(QCA955X_RESET_REG_BOOTSTRAP);
if (t & QCA955X_BOOTSTRAP_REF_CLK_40)
ath79_wmac_data.is_clk_25mhz = false;
else
ath79_wmac_data.is_clk_25mhz = true;
}
void __init ath79_register_wmac(u8 *cal_data)
{
if (soc_is_ar913x())
ar913x_wmac_setup();
else if (soc_is_ar933x())
ar933x_wmac_setup();
else if (soc_is_ar934x())
ar934x_wmac_setup();
else if (soc_is_qca955x())
qca955x_wmac_setup();
else
BUG();
if (cal_data)
memcpy(ath79_wmac_data.eeprom_data, cal_data,
sizeof(ath79_wmac_data.eeprom_data));
platform_device_register(&ath79_wmac_device);
}