diff options
Diffstat (limited to 'kernel/arch/mips/rb532/devices.c')
| -rw-r--r-- | kernel/arch/mips/rb532/devices.c | 324 |
1 files changed, 324 insertions, 0 deletions
diff --git a/kernel/arch/mips/rb532/devices.c b/kernel/arch/mips/rb532/devices.c new file mode 100644 index 000000000..e31e8cdcb --- /dev/null +++ b/kernel/arch/mips/rb532/devices.c @@ -0,0 +1,324 @@ +/* + * RouterBoard 500 Platform devices + * + * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org> + * Copyright (C) 2007 Florian Fainelli <florian@openwrt.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ +#include <linux/kernel.h> +#include <linux/export.h> +#include <linux/init.h> +#include <linux/ctype.h> +#include <linux/string.h> +#include <linux/platform_device.h> +#include <linux/mtd/nand.h> +#include <linux/mtd/mtd.h> +#include <linux/mtd/partitions.h> +#include <linux/gpio_keys.h> +#include <linux/input.h> +#include <linux/serial_8250.h> + +#include <asm/bootinfo.h> + +#include <asm/mach-rc32434/rc32434.h> +#include <asm/mach-rc32434/dma.h> +#include <asm/mach-rc32434/dma_v.h> +#include <asm/mach-rc32434/eth.h> +#include <asm/mach-rc32434/rb.h> +#include <asm/mach-rc32434/integ.h> +#include <asm/mach-rc32434/gpio.h> +#include <asm/mach-rc32434/irq.h> + +#define ETH0_RX_DMA_ADDR (DMA0_BASE_ADDR + 0 * DMA_CHAN_OFFSET) +#define ETH0_TX_DMA_ADDR (DMA0_BASE_ADDR + 1 * DMA_CHAN_OFFSET) + +extern unsigned int idt_cpu_freq; + +static struct mpmc_device dev3; + +void set_latch_u5(unsigned char or_mask, unsigned char nand_mask) +{ + unsigned long flags; + + spin_lock_irqsave(&dev3.lock, flags); + + dev3.state = (dev3.state | or_mask) & ~nand_mask; + writeb(dev3.state, dev3.base); + + spin_unlock_irqrestore(&dev3.lock, flags); +} +EXPORT_SYMBOL(set_latch_u5); + +unsigned char get_latch_u5(void) +{ + return dev3.state; +} +EXPORT_SYMBOL(get_latch_u5); + +static struct resource korina_dev0_res[] = { + { + .name = "korina_regs", + .start = ETH0_BASE_ADDR, + .end = ETH0_BASE_ADDR + sizeof(struct eth_regs), + .flags = IORESOURCE_MEM, + }, { + .name = "korina_rx", + .start = ETH0_DMA_RX_IRQ, + .end = ETH0_DMA_RX_IRQ, + .flags = IORESOURCE_IRQ + }, { + .name = "korina_tx", + .start = ETH0_DMA_TX_IRQ, + .end = ETH0_DMA_TX_IRQ, + .flags = IORESOURCE_IRQ + }, { + .name = "korina_ovr", + .start = ETH0_RX_OVR_IRQ, + .end = ETH0_RX_OVR_IRQ, + .flags = IORESOURCE_IRQ + }, { + .name = "korina_und", + .start = ETH0_TX_UND_IRQ, + .end = ETH0_TX_UND_IRQ, + .flags = IORESOURCE_IRQ + }, { + .name = "korina_dma_rx", + .start = ETH0_RX_DMA_ADDR, + .end = ETH0_RX_DMA_ADDR + DMA_CHAN_OFFSET - 1, + .flags = IORESOURCE_MEM, + }, { + .name = "korina_dma_tx", + .start = ETH0_TX_DMA_ADDR, + .end = ETH0_TX_DMA_ADDR + DMA_CHAN_OFFSET - 1, + .flags = IORESOURCE_MEM, + } +}; + +static struct korina_device korina_dev0_data = { + .name = "korina0", + .mac = {0xde, 0xca, 0xff, 0xc0, 0xff, 0xee} +}; + +static struct platform_device korina_dev0 = { + .id = -1, + .name = "korina", + .resource = korina_dev0_res, + .num_resources = ARRAY_SIZE(korina_dev0_res), +}; + +static struct resource cf_slot0_res[] = { + { + .name = "cf_membase", + .flags = IORESOURCE_MEM + }, { + .name = "cf_irq", + .start = (8 + 4 * 32 + CF_GPIO_NUM), /* 149 */ + .end = (8 + 4 * 32 + CF_GPIO_NUM), + .flags = IORESOURCE_IRQ + } +}; + +static struct cf_device cf_slot0_data = { + .gpio_pin = CF_GPIO_NUM +}; + +static struct platform_device cf_slot0 = { + .id = -1, + .name = "pata-rb532-cf", + .dev.platform_data = &cf_slot0_data, + .resource = cf_slot0_res, + .num_resources = ARRAY_SIZE(cf_slot0_res), +}; + +/* Resources and device for NAND */ +static int rb532_dev_ready(struct mtd_info *mtd) +{ + return gpio_get_value(GPIO_RDY); +} + +static void rb532_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl) +{ + struct nand_chip *chip = mtd->priv; + unsigned char orbits, nandbits; + + if (ctrl & NAND_CTRL_CHANGE) { + orbits = (ctrl & NAND_CLE) << 1; + orbits |= (ctrl & NAND_ALE) >> 1; + + nandbits = (~ctrl & NAND_CLE) << 1; + nandbits |= (~ctrl & NAND_ALE) >> 1; + + set_latch_u5(orbits, nandbits); + } + if (cmd != NAND_CMD_NONE) + writeb(cmd, chip->IO_ADDR_W); +} + +static struct resource nand_slot0_res[] = { + [0] = { + .name = "nand_membase", + .flags = IORESOURCE_MEM + } +}; + +static struct platform_nand_data rb532_nand_data = { + .ctrl.dev_ready = rb532_dev_ready, + .ctrl.cmd_ctrl = rb532_cmd_ctrl, +}; + +static struct platform_device nand_slot0 = { + .name = "gen_nand", + .id = -1, + .resource = nand_slot0_res, + .num_resources = ARRAY_SIZE(nand_slot0_res), + .dev.platform_data = &rb532_nand_data, +}; + +static struct mtd_partition rb532_partition_info[] = { + { + .name = "Routerboard NAND boot", + .offset = 0, + .size = 4 * 1024 * 1024, + }, { + .name = "rootfs", + .offset = MTDPART_OFS_NXTBLK, + .size = MTDPART_SIZ_FULL, + } +}; + +static struct platform_device rb532_led = { + .name = "rb532-led", + .id = -1, +}; + +static struct platform_device rb532_button = { + .name = "rb532-button", + .id = -1, +}; + +static struct resource rb532_wdt_res[] = { + { + .name = "rb532_wdt_res", + .start = INTEG0_BASE_ADDR, + .end = INTEG0_BASE_ADDR + sizeof(struct integ), + .flags = IORESOURCE_MEM, + } +}; + +static struct platform_device rb532_wdt = { + .name = "rc32434_wdt", + .id = -1, + .resource = rb532_wdt_res, + .num_resources = ARRAY_SIZE(rb532_wdt_res), +}; + +static struct plat_serial8250_port rb532_uart_res[] = { + { + .type = PORT_16550A, + .membase = (char *)KSEG1ADDR(REGBASE + UART0BASE), + .irq = UART0_IRQ, + .regshift = 2, + .iotype = UPIO_MEM, + .flags = UPF_BOOT_AUTOCONF, + }, + { + .flags = 0, + } +}; + +static struct platform_device rb532_uart = { + .name = "serial8250", + .id = PLAT8250_DEV_PLATFORM, + .dev.platform_data = &rb532_uart_res, +}; + +static struct platform_device *rb532_devs[] = { + &korina_dev0, + &nand_slot0, + &cf_slot0, + &rb532_led, + &rb532_button, + &rb532_uart, + &rb532_wdt +}; + +/* NAND definitions */ +#define NAND_CHIP_DELAY 25 + +static void __init rb532_nand_setup(void) +{ + switch (mips_machtype) { + case MACH_MIKROTIK_RB532A: + set_latch_u5(LO_FOFF | LO_CEX, + LO_ULED | LO_ALE | LO_CLE | LO_WPX); + break; + default: + set_latch_u5(LO_WPX | LO_FOFF | LO_CEX, + LO_ULED | LO_ALE | LO_CLE); + break; + } + + /* Setup NAND specific settings */ + rb532_nand_data.chip.nr_chips = 1; + rb532_nand_data.chip.nr_partitions = ARRAY_SIZE(rb532_partition_info); + rb532_nand_data.chip.partitions = rb532_partition_info; + rb532_nand_data.chip.chip_delay = NAND_CHIP_DELAY; +} + + +static int __init plat_setup_devices(void) +{ + /* Look for the CF card reader */ + if (!readl(IDT434_REG_BASE + DEV1MASK)) + rb532_devs[2] = NULL; /* disable cf_slot0 at index 2 */ + else { + cf_slot0_res[0].start = + readl(IDT434_REG_BASE + DEV1BASE); + cf_slot0_res[0].end = cf_slot0_res[0].start + 0x1000; + } + + /* Read the NAND resources from the device controller */ + nand_slot0_res[0].start = readl(IDT434_REG_BASE + DEV2BASE); + nand_slot0_res[0].end = nand_slot0_res[0].start + 0x1000; + + /* Read and map device controller 3 */ + dev3.base = ioremap_nocache(readl(IDT434_REG_BASE + DEV3BASE), 1); + + if (!dev3.base) { + printk(KERN_ERR "rb532: cannot remap device controller 3\n"); + return -ENXIO; + } + + /* Initialise the NAND device */ + rb532_nand_setup(); + + /* set the uart clock to the current cpu frequency */ + rb532_uart_res[0].uartclk = idt_cpu_freq; + + dev_set_drvdata(&korina_dev0.dev, &korina_dev0_data); + + return platform_add_devices(rb532_devs, ARRAY_SIZE(rb532_devs)); +} + +static int __init setup_kmac(char *s) +{ + printk(KERN_INFO "korina mac = %s\n", s); + if (!mac_pton(s, korina_dev0_data.mac)) { + printk(KERN_ERR "Invalid mac\n"); + return -EINVAL; + } + return 0; +} + +__setup("kmac=", setup_kmac); + +arch_initcall(plat_setup_devices); |