diff options
Diffstat (limited to 'arch/mips/ath79/dev-common.c')
| -rw-r--r-- | arch/mips/ath79/dev-common.c | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/arch/mips/ath79/dev-common.c b/arch/mips/ath79/dev-common.c new file mode 100644 index 000000000..9d0172a4d --- /dev/null +++ b/arch/mips/ath79/dev-common.c @@ -0,0 +1,159 @@ +/* + * Atheros AR71XX/AR724X/AR913X common devices + * + * 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 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/kernel.h> +#include <linux/init.h> +#include <linux/platform_device.h> +#include <linux/platform_data/gpio-ath79.h> +#include <linux/serial_8250.h> +#include <linux/clk.h> +#include <linux/err.h> + +#include <asm/mach-ath79/ath79.h> +#include <asm/mach-ath79/ar71xx_regs.h> +#include "common.h" +#include "dev-common.h" + +static struct resource ath79_uart_resources[] = { + { + .start = AR71XX_UART_BASE, + .end = AR71XX_UART_BASE + AR71XX_UART_SIZE - 1, + .flags = IORESOURCE_MEM, + }, +}; + +#define AR71XX_UART_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP) +static struct plat_serial8250_port ath79_uart_data[] = { + { + .mapbase = AR71XX_UART_BASE, + .irq = ATH79_MISC_IRQ(3), + .flags = AR71XX_UART_FLAGS, + .iotype = UPIO_MEM32, + .regshift = 2, + }, { + /* terminating entry */ + } +}; + +static struct platform_device ath79_uart_device = { + .name = "serial8250", + .id = PLAT8250_DEV_PLATFORM, + .resource = ath79_uart_resources, + .num_resources = ARRAY_SIZE(ath79_uart_resources), + .dev = { + .platform_data = ath79_uart_data + }, +}; + +static struct resource ar933x_uart_resources[] = { + { + .start = AR933X_UART_BASE, + .end = AR933X_UART_BASE + AR71XX_UART_SIZE - 1, + .flags = IORESOURCE_MEM, + }, + { + .start = ATH79_MISC_IRQ(3), + .end = ATH79_MISC_IRQ(3), + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device ar933x_uart_device = { + .name = "ar933x-uart", + .id = -1, + .resource = ar933x_uart_resources, + .num_resources = ARRAY_SIZE(ar933x_uart_resources), +}; + +void __init ath79_register_uart(void) +{ + unsigned long uart_clk_rate; + + uart_clk_rate = ath79_get_sys_clk_rate("uart"); + + if (soc_is_ar71xx() || + soc_is_ar724x() || + soc_is_ar913x() || + soc_is_ar934x() || + soc_is_qca955x()) { + ath79_uart_data[0].uartclk = uart_clk_rate; + platform_device_register(&ath79_uart_device); + } else if (soc_is_ar933x()) { + platform_device_register(&ar933x_uart_device); + } else { + BUG(); + } +} + +void __init ath79_register_wdt(void) +{ + struct resource res; + + memset(&res, 0, sizeof(res)); + + res.flags = IORESOURCE_MEM; + res.start = AR71XX_RESET_BASE + AR71XX_RESET_REG_WDOG_CTRL; + res.end = res.start + 0x8 - 1; + + platform_device_register_simple("ath79-wdt", -1, &res, 1); +} + +static struct ath79_gpio_platform_data ath79_gpio_pdata; + +static struct resource ath79_gpio_resources[] = { + { + .flags = IORESOURCE_MEM, + .start = AR71XX_GPIO_BASE, + .end = AR71XX_GPIO_BASE + AR71XX_GPIO_SIZE - 1, + }, + { + .start = ATH79_MISC_IRQ(2), + .end = ATH79_MISC_IRQ(2), + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device ath79_gpio_device = { + .name = "ath79-gpio", + .id = -1, + .resource = ath79_gpio_resources, + .num_resources = ARRAY_SIZE(ath79_gpio_resources), + .dev = { + .platform_data = &ath79_gpio_pdata + }, +}; + +void __init ath79_gpio_init(void) +{ + if (soc_is_ar71xx()) { + ath79_gpio_pdata.ngpios = AR71XX_GPIO_COUNT; + } else if (soc_is_ar7240()) { + ath79_gpio_pdata.ngpios = AR7240_GPIO_COUNT; + } else if (soc_is_ar7241() || soc_is_ar7242()) { + ath79_gpio_pdata.ngpios = AR7241_GPIO_COUNT; + } else if (soc_is_ar913x()) { + ath79_gpio_pdata.ngpios = AR913X_GPIO_COUNT; + } else if (soc_is_ar933x()) { + ath79_gpio_pdata.ngpios = AR933X_GPIO_COUNT; + } else if (soc_is_ar934x()) { + ath79_gpio_pdata.ngpios = AR934X_GPIO_COUNT; + ath79_gpio_pdata.oe_inverted = 1; + } else if (soc_is_qca955x()) { + ath79_gpio_pdata.ngpios = QCA955X_GPIO_COUNT; + ath79_gpio_pdata.oe_inverted = 1; + } else { + BUG(); + } + + platform_device_register(&ath79_gpio_device); +} |