diff options
Diffstat (limited to 'target/linux/ramips/files/arch/mips/ralink/rt288x/rt288x.c')
| -rw-r--r-- | target/linux/ramips/files/arch/mips/ralink/rt288x/rt288x.c | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/target/linux/ramips/files/arch/mips/ralink/rt288x/rt288x.c b/target/linux/ramips/files/arch/mips/ralink/rt288x/rt288x.c new file mode 100644 index 000000000..c51ad98b3 --- /dev/null +++ b/target/linux/ramips/files/arch/mips/ralink/rt288x/rt288x.c @@ -0,0 +1,153 @@ +/* + * Ralink RT288x SoC specific setup + * + * Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org> + * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org> + * + * Parts of this file are based on Ralink's 2.6.21 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/module.h> + +#include <asm/mach-ralink/common.h> +#include <asm/mach-ralink/ramips_gpio.h> +#include <asm/mach-ralink/rt288x.h> +#include <asm/mach-ralink/rt288x_regs.h> + +void __iomem * rt288x_sysc_base; +void __iomem * rt288x_memc_base; + +void __init ramips_soc_prom_init(void) +{ + void __iomem *sysc = (void __iomem *) KSEG1ADDR(RT2880_SYSC_BASE); + u32 n0; + u32 n1; + u32 id; + + n0 = __raw_readl(sysc + SYSC_REG_CHIP_NAME0); + n1 = __raw_readl(sysc + SYSC_REG_CHIP_NAME1); + id = __raw_readl(sysc + SYSC_REG_CHIP_ID); + + snprintf(ramips_sys_type, RAMIPS_SYS_TYPE_LEN, + "Ralink %c%c%c%c%c%c%c%c id:%u rev:%u", + (char) (n0 & 0xff), (char) ((n0 >> 8) & 0xff), + (char) ((n0 >> 16) & 0xff), (char) ((n0 >> 24) & 0xff), + (char) (n1 & 0xff), (char) ((n1 >> 8) & 0xff), + (char) ((n1 >> 16) & 0xff), (char) ((n1 >> 24) & 0xff), + (id >> CHIP_ID_ID_SHIFT) & CHIP_ID_ID_MASK, + (id & CHIP_ID_REV_MASK)); + + ramips_mem_base = RT2880_SDRAM_BASE; + ramips_mem_size_min = RT288X_MEM_SIZE_MIN; + ramips_mem_size_max = RT288X_MEM_SIZE_MAX; +} + +static struct ramips_gpio_chip rt288x_gpio_chips[] = { + { + .chip = { + .label = "RT288X-GPIO0", + .base = 0, + .ngpio = 24, + }, + .regs = { + [RAMIPS_GPIO_REG_INT] = 0x00, + [RAMIPS_GPIO_REG_EDGE] = 0x04, + [RAMIPS_GPIO_REG_RENA] = 0x08, + [RAMIPS_GPIO_REG_FENA] = 0x0c, + [RAMIPS_GPIO_REG_DATA] = 0x20, + [RAMIPS_GPIO_REG_DIR] = 0x24, + [RAMIPS_GPIO_REG_POL] = 0x28, + [RAMIPS_GPIO_REG_SET] = 0x2c, + [RAMIPS_GPIO_REG_RESET] = 0x30, + [RAMIPS_GPIO_REG_TOGGLE] = 0x34, + }, + .map_base = RT2880_PIO_BASE, + .map_size = RT2880_PIO_SIZE, + }, + { + .chip = { + .label = "RT288X-GPIO1", + .base = 24, + .ngpio = 16, + }, + .regs = { + [RAMIPS_GPIO_REG_INT] = 0x38, + [RAMIPS_GPIO_REG_EDGE] = 0x3c, + [RAMIPS_GPIO_REG_RENA] = 0x40, + [RAMIPS_GPIO_REG_FENA] = 0x44, + [RAMIPS_GPIO_REG_DATA] = 0x48, + [RAMIPS_GPIO_REG_DIR] = 0x4c, + [RAMIPS_GPIO_REG_POL] = 0x50, + [RAMIPS_GPIO_REG_SET] = 0x54, + [RAMIPS_GPIO_REG_RESET] = 0x58, + [RAMIPS_GPIO_REG_TOGGLE] = 0x5c, + }, + .map_base = RT2880_PIO_BASE, + .map_size = RT2880_PIO_SIZE, + }, + { + .chip = { + .label = "RT288X-GPIO2", + .base = 40, + .ngpio = 32, + }, + .regs = { + [RAMIPS_GPIO_REG_INT] = 0x60, + [RAMIPS_GPIO_REG_EDGE] = 0x64, + [RAMIPS_GPIO_REG_RENA] = 0x68, + [RAMIPS_GPIO_REG_FENA] = 0x6c, + [RAMIPS_GPIO_REG_DATA] = 0x70, + [RAMIPS_GPIO_REG_DIR] = 0x74, + [RAMIPS_GPIO_REG_POL] = 0x78, + [RAMIPS_GPIO_REG_SET] = 0x7c, + [RAMIPS_GPIO_REG_RESET] = 0x80, + [RAMIPS_GPIO_REG_TOGGLE] = 0x84, + }, + .map_base = RT2880_PIO_BASE, + .map_size = RT2880_PIO_SIZE, + }, +}; + +static struct ramips_gpio_data rt288x_gpio_data = { + .chips = rt288x_gpio_chips, + .num_chips = ARRAY_SIZE(rt288x_gpio_chips), +}; + +static void rt288x_gpio_reserve(int first, int last) +{ + for (; first <= last; first++) + gpio_request(first, "reserved"); +} + +void __init rt288x_gpio_init(u32 mode) +{ + rt288x_sysc_wr(mode, SYSC_REG_GPIO_MODE); + + ramips_gpio_init(&rt288x_gpio_data); + if ((mode & RT2880_GPIO_MODE_I2C) == 0) + rt288x_gpio_reserve(1, 2); + + if ((mode & RT2880_GPIO_MODE_SPI) == 0) + rt288x_gpio_reserve(3, 6); + + if ((mode & RT2880_GPIO_MODE_UART0) == 0) + rt288x_gpio_reserve(7, 14); + + if ((mode & RT2880_GPIO_MODE_JTAG) == 0) + rt288x_gpio_reserve(17, 21); + + if ((mode & RT2880_GPIO_MODE_MDIO) == 0) + rt288x_gpio_reserve(22, 23); + + if ((mode & RT2880_GPIO_MODE_SDRAM) == 0) + rt288x_gpio_reserve(24, 39); + + if ((mode & RT2880_GPIO_MODE_PCI) == 0) + rt288x_gpio_reserve(40, 71); +} |