mirror of https://gitee.com/openkylin/linux.git
334 lines
7.7 KiB
C
334 lines
7.7 KiB
C
/*
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* RouterBoard 500 Platform devices
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*
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* Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
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* Copyright (C) 2007 Florian Fainelli <florian@openwrt.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/kernel.h>
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#include <linux/export.h>
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#include <linux/init.h>
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#include <linux/ctype.h>
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#include <linux/string.h>
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#include <linux/platform_device.h>
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#include <linux/mtd/platnand.h>
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#include <linux/mtd/mtd.h>
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#include <linux/gpio.h>
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#include <linux/gpio/machine.h>
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#include <linux/gpio_keys.h>
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#include <linux/input.h>
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#include <linux/serial_8250.h>
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#include <asm/bootinfo.h>
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#include <asm/mach-rc32434/rc32434.h>
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#include <asm/mach-rc32434/dma.h>
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#include <asm/mach-rc32434/dma_v.h>
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#include <asm/mach-rc32434/eth.h>
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#include <asm/mach-rc32434/rb.h>
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#include <asm/mach-rc32434/integ.h>
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#include <asm/mach-rc32434/gpio.h>
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#include <asm/mach-rc32434/irq.h>
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#define ETH0_RX_DMA_ADDR (DMA0_BASE_ADDR + 0 * DMA_CHAN_OFFSET)
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#define ETH0_TX_DMA_ADDR (DMA0_BASE_ADDR + 1 * DMA_CHAN_OFFSET)
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extern unsigned int idt_cpu_freq;
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static struct mpmc_device dev3;
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void set_latch_u5(unsigned char or_mask, unsigned char nand_mask)
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{
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unsigned long flags;
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spin_lock_irqsave(&dev3.lock, flags);
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dev3.state = (dev3.state | or_mask) & ~nand_mask;
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writeb(dev3.state, dev3.base);
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spin_unlock_irqrestore(&dev3.lock, flags);
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}
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EXPORT_SYMBOL(set_latch_u5);
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unsigned char get_latch_u5(void)
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{
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return dev3.state;
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}
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EXPORT_SYMBOL(get_latch_u5);
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static struct resource korina_dev0_res[] = {
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{
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.name = "korina_regs",
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.start = ETH0_BASE_ADDR,
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.end = ETH0_BASE_ADDR + sizeof(struct eth_regs),
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.flags = IORESOURCE_MEM,
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}, {
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.name = "korina_rx",
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.start = ETH0_DMA_RX_IRQ,
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.end = ETH0_DMA_RX_IRQ,
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.flags = IORESOURCE_IRQ
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}, {
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.name = "korina_tx",
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.start = ETH0_DMA_TX_IRQ,
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.end = ETH0_DMA_TX_IRQ,
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.flags = IORESOURCE_IRQ
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}, {
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.name = "korina_ovr",
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.start = ETH0_RX_OVR_IRQ,
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.end = ETH0_RX_OVR_IRQ,
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.flags = IORESOURCE_IRQ
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}, {
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.name = "korina_und",
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.start = ETH0_TX_UND_IRQ,
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.end = ETH0_TX_UND_IRQ,
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.flags = IORESOURCE_IRQ
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}, {
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.name = "korina_dma_rx",
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.start = ETH0_RX_DMA_ADDR,
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.end = ETH0_RX_DMA_ADDR + DMA_CHAN_OFFSET - 1,
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.flags = IORESOURCE_MEM,
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}, {
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.name = "korina_dma_tx",
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.start = ETH0_TX_DMA_ADDR,
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.end = ETH0_TX_DMA_ADDR + DMA_CHAN_OFFSET - 1,
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.flags = IORESOURCE_MEM,
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}
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};
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static struct korina_device korina_dev0_data = {
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.name = "korina0",
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.mac = {0xde, 0xca, 0xff, 0xc0, 0xff, 0xee}
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};
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static struct platform_device korina_dev0 = {
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.id = -1,
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.name = "korina",
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.resource = korina_dev0_res,
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.num_resources = ARRAY_SIZE(korina_dev0_res),
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};
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static struct resource cf_slot0_res[] = {
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{
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.name = "cf_membase",
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.flags = IORESOURCE_MEM
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}, {
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.name = "cf_irq",
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.start = (8 + 4 * 32 + CF_GPIO_NUM), /* 149 */
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.end = (8 + 4 * 32 + CF_GPIO_NUM),
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.flags = IORESOURCE_IRQ
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}
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};
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static struct gpiod_lookup_table cf_slot0_gpio_table = {
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.dev_id = "pata-rb532-cf",
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.table = {
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GPIO_LOOKUP("gpio0", CF_GPIO_NUM,
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NULL, GPIO_ACTIVE_HIGH),
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{ },
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},
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};
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static struct platform_device cf_slot0 = {
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.id = -1,
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.name = "pata-rb532-cf",
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.resource = cf_slot0_res,
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.num_resources = ARRAY_SIZE(cf_slot0_res),
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};
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/* Resources and device for NAND */
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static int rb532_dev_ready(struct nand_chip *chip)
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{
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return gpio_get_value(GPIO_RDY);
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}
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static void rb532_cmd_ctrl(struct nand_chip *chip, int cmd, unsigned int ctrl)
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{
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unsigned char orbits, nandbits;
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if (ctrl & NAND_CTRL_CHANGE) {
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orbits = (ctrl & NAND_CLE) << 1;
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orbits |= (ctrl & NAND_ALE) >> 1;
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nandbits = (~ctrl & NAND_CLE) << 1;
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nandbits |= (~ctrl & NAND_ALE) >> 1;
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set_latch_u5(orbits, nandbits);
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}
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if (cmd != NAND_CMD_NONE)
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writeb(cmd, chip->legacy.IO_ADDR_W);
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}
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static struct resource nand_slot0_res[] = {
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[0] = {
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.name = "nand_membase",
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.flags = IORESOURCE_MEM
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}
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};
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static struct platform_nand_data rb532_nand_data = {
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.ctrl.dev_ready = rb532_dev_ready,
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.ctrl.cmd_ctrl = rb532_cmd_ctrl,
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};
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static struct platform_device nand_slot0 = {
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.name = "gen_nand",
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.id = -1,
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.resource = nand_slot0_res,
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.num_resources = ARRAY_SIZE(nand_slot0_res),
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.dev.platform_data = &rb532_nand_data,
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};
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static struct mtd_partition rb532_partition_info[] = {
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{
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.name = "Routerboard NAND boot",
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.offset = 0,
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.size = 4 * 1024 * 1024,
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}, {
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.name = "rootfs",
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.offset = MTDPART_OFS_NXTBLK,
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.size = MTDPART_SIZ_FULL,
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}
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};
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static struct platform_device rb532_led = {
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.name = "rb532-led",
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.id = -1,
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};
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static struct platform_device rb532_button = {
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.name = "rb532-button",
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.id = -1,
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};
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static struct resource rb532_wdt_res[] = {
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{
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.name = "rb532_wdt_res",
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.start = INTEG0_BASE_ADDR,
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.end = INTEG0_BASE_ADDR + sizeof(struct integ),
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.flags = IORESOURCE_MEM,
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}
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};
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static struct platform_device rb532_wdt = {
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.name = "rc32434_wdt",
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.id = -1,
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.resource = rb532_wdt_res,
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.num_resources = ARRAY_SIZE(rb532_wdt_res),
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};
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static struct plat_serial8250_port rb532_uart_res[] = {
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{
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.type = PORT_16550A,
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.membase = (char *)KSEG1ADDR(REGBASE + UART0BASE),
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.irq = UART0_IRQ,
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.regshift = 2,
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.iotype = UPIO_MEM,
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.flags = UPF_BOOT_AUTOCONF,
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},
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{
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.flags = 0,
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}
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};
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static struct platform_device rb532_uart = {
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.name = "serial8250",
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.id = PLAT8250_DEV_PLATFORM,
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.dev.platform_data = &rb532_uart_res,
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};
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static struct platform_device *rb532_devs[] = {
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&korina_dev0,
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&nand_slot0,
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&cf_slot0,
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&rb532_led,
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&rb532_button,
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&rb532_uart,
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&rb532_wdt
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};
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/* NAND definitions */
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#define NAND_CHIP_DELAY 25
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static void __init rb532_nand_setup(void)
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{
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switch (mips_machtype) {
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case MACH_MIKROTIK_RB532A:
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set_latch_u5(LO_FOFF | LO_CEX,
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LO_ULED | LO_ALE | LO_CLE | LO_WPX);
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break;
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default:
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set_latch_u5(LO_WPX | LO_FOFF | LO_CEX,
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LO_ULED | LO_ALE | LO_CLE);
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break;
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}
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/* Setup NAND specific settings */
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rb532_nand_data.chip.nr_chips = 1;
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rb532_nand_data.chip.nr_partitions = ARRAY_SIZE(rb532_partition_info);
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rb532_nand_data.chip.partitions = rb532_partition_info;
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rb532_nand_data.chip.chip_delay = NAND_CHIP_DELAY;
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}
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static int __init plat_setup_devices(void)
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{
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/* Look for the CF card reader */
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if (!readl(IDT434_REG_BASE + DEV1MASK))
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rb532_devs[2] = NULL; /* disable cf_slot0 at index 2 */
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else {
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cf_slot0_res[0].start =
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readl(IDT434_REG_BASE + DEV1BASE);
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cf_slot0_res[0].end = cf_slot0_res[0].start + 0x1000;
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}
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/* Read the NAND resources from the device controller */
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nand_slot0_res[0].start = readl(IDT434_REG_BASE + DEV2BASE);
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nand_slot0_res[0].end = nand_slot0_res[0].start + 0x1000;
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/* Read and map device controller 3 */
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dev3.base = ioremap_nocache(readl(IDT434_REG_BASE + DEV3BASE), 1);
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if (!dev3.base) {
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printk(KERN_ERR "rb532: cannot remap device controller 3\n");
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return -ENXIO;
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}
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/* Initialise the NAND device */
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rb532_nand_setup();
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/* set the uart clock to the current cpu frequency */
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rb532_uart_res[0].uartclk = idt_cpu_freq;
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dev_set_drvdata(&korina_dev0.dev, &korina_dev0_data);
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gpiod_add_lookup_table(&cf_slot0_gpio_table);
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return platform_add_devices(rb532_devs, ARRAY_SIZE(rb532_devs));
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}
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#ifdef CONFIG_NET
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static int __init setup_kmac(char *s)
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{
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printk(KERN_INFO "korina mac = %s\n", s);
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if (!mac_pton(s, korina_dev0_data.mac)) {
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printk(KERN_ERR "Invalid mac\n");
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return -EINVAL;
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}
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return 0;
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}
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__setup("kmac=", setup_kmac);
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#endif /* CONFIG_NET */
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arch_initcall(plat_setup_devices);
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