1/*
  2 *  Atheros AR71XX/AR724X/AR913X common devices
  3 *
  4 *  Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
  5 *  Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
  6 *
  7 *  Parts of this file are based on Atheros' 2.6.15 BSP
  8 *
  9 *  This program is free software; you can redistribute it and/or modify it
 10 *  under the terms of the GNU General Public License version 2 as published
 11 *  by the Free Software Foundation.
 12 */
 13
 14#include <linux/kernel.h>
 15#include <linux/init.h>
 16#include <linux/platform_device.h>
 17#include <linux/platform_data/gpio-ath79.h>
 18#include <linux/serial_8250.h>
 19#include <linux/clk.h>
 20#include <linux/err.h>
 21
 22#include <asm/mach-ath79/ath79.h>
 23#include <asm/mach-ath79/ar71xx_regs.h>
 24#include "common.h"
 25#include "dev-common.h"
 26
 27static struct resource ath79_uart_resources[] = {
 28	{
 29		.start	= AR71XX_UART_BASE,
 30		.end	= AR71XX_UART_BASE + AR71XX_UART_SIZE - 1,
 31		.flags	= IORESOURCE_MEM,
 32	},
 33};
 34
 35#define AR71XX_UART_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP)
 36static struct plat_serial8250_port ath79_uart_data[] = {
 37	{
 38		.mapbase	= AR71XX_UART_BASE,
 39		.irq		= ATH79_MISC_IRQ(3),
 40		.flags		= AR71XX_UART_FLAGS,
 41		.iotype		= UPIO_MEM32,
 42		.regshift	= 2,
 43	}, {
 44		/* terminating entry */
 45	}
 46};
 47
 48static struct platform_device ath79_uart_device = {
 49	.name		= "serial8250",
 50	.id		= PLAT8250_DEV_PLATFORM,
 51	.resource	= ath79_uart_resources,
 52	.num_resources	= ARRAY_SIZE(ath79_uart_resources),
 53	.dev = {
 54		.platform_data	= ath79_uart_data
 55	},
 56};
 57
 58static struct resource ar933x_uart_resources[] = {
 59	{
 60		.start	= AR933X_UART_BASE,
 61		.end	= AR933X_UART_BASE + AR71XX_UART_SIZE - 1,
 62		.flags	= IORESOURCE_MEM,
 63	},
 64	{
 65		.start	= ATH79_MISC_IRQ(3),
 66		.end	= ATH79_MISC_IRQ(3),
 67		.flags	= IORESOURCE_IRQ,
 68	},
 69};
 70
 71static struct platform_device ar933x_uart_device = {
 72	.name		= "ar933x-uart",
 73	.id		= -1,
 74	.resource	= ar933x_uart_resources,
 75	.num_resources	= ARRAY_SIZE(ar933x_uart_resources),
 76};
 77
 78void __init ath79_register_uart(void)
 79{
 80	unsigned long uart_clk_rate;
 81
 82	uart_clk_rate = ath79_get_sys_clk_rate("uart");
 83
 84	if (soc_is_ar71xx() ||
 85	    soc_is_ar724x() ||
 86	    soc_is_ar913x() ||
 87	    soc_is_ar934x() ||
 88	    soc_is_qca955x()) {
 89		ath79_uart_data[0].uartclk = uart_clk_rate;
 90		platform_device_register(&ath79_uart_device);
 91	} else if (soc_is_ar933x()) {
 92		platform_device_register(&ar933x_uart_device);
 93	} else {
 94		BUG();
 95	}
 96}
 97
 98void __init ath79_register_wdt(void)
 99{
100	struct resource res;
101
102	memset(&res, 0, sizeof(res));
103
104	res.flags = IORESOURCE_MEM;
105	res.start = AR71XX_RESET_BASE + AR71XX_RESET_REG_WDOG_CTRL;
106	res.end = res.start + 0x8 - 1;
107
108	platform_device_register_simple("ath79-wdt", -1, &res, 1);
109}
110
111static struct ath79_gpio_platform_data ath79_gpio_pdata;
112
113static struct resource ath79_gpio_resources[] = {
114	{
115		.flags = IORESOURCE_MEM,
116		.start = AR71XX_GPIO_BASE,
117		.end = AR71XX_GPIO_BASE + AR71XX_GPIO_SIZE - 1,
118	},
119	{
120		.start	= ATH79_MISC_IRQ(2),
121		.end	= ATH79_MISC_IRQ(2),
122		.flags	= IORESOURCE_IRQ,
123	},
124};
125
126static struct platform_device ath79_gpio_device = {
127	.name		= "ath79-gpio",
128	.id		= -1,
129	.resource	= ath79_gpio_resources,
130	.num_resources	= ARRAY_SIZE(ath79_gpio_resources),
131	.dev = {
132		.platform_data	= &ath79_gpio_pdata
133	},
134};
135
136void __init ath79_gpio_init(void)
137{
138	if (soc_is_ar71xx()) {
139		ath79_gpio_pdata.ngpios = AR71XX_GPIO_COUNT;
140	} else if (soc_is_ar7240()) {
141		ath79_gpio_pdata.ngpios = AR7240_GPIO_COUNT;
142	} else if (soc_is_ar7241() || soc_is_ar7242()) {
143		ath79_gpio_pdata.ngpios = AR7241_GPIO_COUNT;
144	} else if (soc_is_ar913x()) {
145		ath79_gpio_pdata.ngpios = AR913X_GPIO_COUNT;
146	} else if (soc_is_ar933x()) {
147		ath79_gpio_pdata.ngpios = AR933X_GPIO_COUNT;
148	} else if (soc_is_ar934x()) {
149		ath79_gpio_pdata.ngpios = AR934X_GPIO_COUNT;
150		ath79_gpio_pdata.oe_inverted = 1;
151	} else if (soc_is_qca955x()) {
152		ath79_gpio_pdata.ngpios = QCA955X_GPIO_COUNT;
153		ath79_gpio_pdata.oe_inverted = 1;
154	} else {
155		BUG();
156	}
157
158	platform_device_register(&ath79_gpio_device);
159}