1/*
  2 *  Atheros AR913X/AR933X SoC built-in WMAC device support
  3 *
  4 *  Copyright (C) 2010-2011 Jaiganesh Narayanan <jnarayanan@atheros.com>
  5 *  Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
  6 *  Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
  7 *
  8 *  Parts of this file are based on Atheros 2.6.15/2.6.31 BSP
  9 *
 10 *  This program is free software; you can redistribute it and/or modify it
 11 *  under the terms of the GNU General Public License version 2 as published
 12 *  by the Free Software Foundation.
 13 */
 14
 15#include <linux/init.h>
 16#include <linux/delay.h>
 17#include <linux/irq.h>
 18#include <linux/platform_device.h>
 19#include <linux/ath9k_platform.h>
 20
 21#include <asm/mach-ath79/ath79.h>
 22#include <asm/mach-ath79/ar71xx_regs.h>
 23#include "dev-wmac.h"
 24
 25static struct ath9k_platform_data ath79_wmac_data;
 26
 27static struct resource ath79_wmac_resources[] = {
 28	{
 29		/* .start and .end fields are filled dynamically */
 30		.flags	= IORESOURCE_MEM,
 31	}, {
 32		/* .start and .end fields are filled dynamically */
 33		.flags	= IORESOURCE_IRQ,
 34	},
 35};
 36
 37static struct platform_device ath79_wmac_device = {
 38	.name		= "ath9k",
 39	.id		= -1,
 40	.resource	= ath79_wmac_resources,
 41	.num_resources	= ARRAY_SIZE(ath79_wmac_resources),
 42	.dev = {
 43		.platform_data = &ath79_wmac_data,
 44	},
 45};
 46
 47static void __init ar913x_wmac_setup(void)
 48{
 49	/* reset the WMAC */
 50	ath79_device_reset_set(AR913X_RESET_AMBA2WMAC);
 51	mdelay(10);
 52
 53	ath79_device_reset_clear(AR913X_RESET_AMBA2WMAC);
 54	mdelay(10);
 55
 56	ath79_wmac_resources[0].start = AR913X_WMAC_BASE;
 57	ath79_wmac_resources[0].end = AR913X_WMAC_BASE + AR913X_WMAC_SIZE - 1;
 58	ath79_wmac_resources[1].start = ATH79_CPU_IRQ(2);
 59	ath79_wmac_resources[1].end = ATH79_CPU_IRQ(2);
 60}
 61
 62
 63static int ar933x_wmac_reset(void)
 64{
 65	ath79_device_reset_set(AR933X_RESET_WMAC);
 66	ath79_device_reset_clear(AR933X_RESET_WMAC);
 67
 68	return 0;
 69}
 70
 71static int ar933x_r1_get_wmac_revision(void)
 72{
 73	return ath79_soc_rev;
 74}
 75
 76static void __init ar933x_wmac_setup(void)
 77{
 78	u32 t;
 79
 80	ar933x_wmac_reset();
 81
 82	ath79_wmac_device.name = "ar933x_wmac";
 83
 84	ath79_wmac_resources[0].start = AR933X_WMAC_BASE;
 85	ath79_wmac_resources[0].end = AR933X_WMAC_BASE + AR933X_WMAC_SIZE - 1;
 86	ath79_wmac_resources[1].start = ATH79_CPU_IRQ(2);
 87	ath79_wmac_resources[1].end = ATH79_CPU_IRQ(2);
 88
 89	t = ath79_reset_rr(AR933X_RESET_REG_BOOTSTRAP);
 90	if (t & AR933X_BOOTSTRAP_REF_CLK_40)
 91		ath79_wmac_data.is_clk_25mhz = false;
 92	else
 93		ath79_wmac_data.is_clk_25mhz = true;
 94
 95	if (ath79_soc_rev == 1)
 96		ath79_wmac_data.get_mac_revision = ar933x_r1_get_wmac_revision;
 97
 98	ath79_wmac_data.external_reset = ar933x_wmac_reset;
 99}
100
101static void ar934x_wmac_setup(void)
102{
103	u32 t;
104
105	ath79_wmac_device.name = "ar934x_wmac";
106
107	ath79_wmac_resources[0].start = AR934X_WMAC_BASE;
108	ath79_wmac_resources[0].end = AR934X_WMAC_BASE + AR934X_WMAC_SIZE - 1;
109	ath79_wmac_resources[1].start = ATH79_IP2_IRQ(1);
110	ath79_wmac_resources[1].end = ATH79_IP2_IRQ(1);
111
112	t = ath79_reset_rr(AR934X_RESET_REG_BOOTSTRAP);
113	if (t & AR934X_BOOTSTRAP_REF_CLK_40)
114		ath79_wmac_data.is_clk_25mhz = false;
115	else
116		ath79_wmac_data.is_clk_25mhz = true;
117}
118
119static void qca955x_wmac_setup(void)
120{
121	u32 t;
122
123	ath79_wmac_device.name = "qca955x_wmac";
124
125	ath79_wmac_resources[0].start = QCA955X_WMAC_BASE;
126	ath79_wmac_resources[0].end = QCA955X_WMAC_BASE + QCA955X_WMAC_SIZE - 1;
127	ath79_wmac_resources[1].start = ATH79_IP2_IRQ(1);
128	ath79_wmac_resources[1].end = ATH79_IP2_IRQ(1);
129
130	t = ath79_reset_rr(QCA955X_RESET_REG_BOOTSTRAP);
131	if (t & QCA955X_BOOTSTRAP_REF_CLK_40)
132		ath79_wmac_data.is_clk_25mhz = false;
133	else
134		ath79_wmac_data.is_clk_25mhz = true;
135}
136
137void __init ath79_register_wmac(u8 *cal_data)
138{
139	if (soc_is_ar913x())
140		ar913x_wmac_setup();
141	else if (soc_is_ar933x())
142		ar933x_wmac_setup();
143	else if (soc_is_ar934x())
144		ar934x_wmac_setup();
145	else if (soc_is_qca955x())
146		qca955x_wmac_setup();
147	else
148		BUG();
149
150	if (cal_data)
151		memcpy(ath79_wmac_data.eeprom_data, cal_data,
152		       sizeof(ath79_wmac_data.eeprom_data));
153
154	platform_device_register(&ath79_wmac_device);
155}