arch/mips/rb532/devices.c - linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0-or-later
 /*
  *  RouterBoard 500 Platform devices
  *
  *  Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
  *  Copyright (C) 2007 Florian Fainelli <florian@openwrt.org>
  */
 #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/platnand.h>
 #include <linux/mtd/mtd.h>
 #include <linux/gpio.h>
 #include <linux/gpio/machine.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 = "emac",
 		.start = ETH0_BASE_ADDR,
 		.end = ETH0_BASE_ADDR + sizeof(struct eth_regs),
 		.flags = IORESOURCE_MEM,
 	 }, {
 		.name = "rx",
 		.start = ETH0_DMA_RX_IRQ,
 		.end = ETH0_DMA_RX_IRQ,
 		.flags = IORESOURCE_IRQ
 	}, {
 		.name = "tx",
 		.start = ETH0_DMA_TX_IRQ,
 		.end = ETH0_DMA_TX_IRQ,
 		.flags = IORESOURCE_IRQ
 	}, {
 		.name = "dma_rx",
 		.start = ETH0_RX_DMA_ADDR,
 		.end = ETH0_RX_DMA_ADDR + DMA_CHAN_OFFSET - 1,
 		.flags = IORESOURCE_MEM,
 	 }, {
 		.name = "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),
 	.dev = {
 		.platform_data = &korina_dev0_data.mac,
 	}
 };

 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 gpiod_lookup_table cf_slot0_gpio_table = {
 	.dev_id = "pata-rb532-cf",
 	.table = {
 		GPIO_LOOKUP("gpio0", CF_GPIO_NUM,
 			    NULL, GPIO_ACTIVE_HIGH),
 		{ },
 	},
 };

 static struct platform_device cf_slot0 = {
 	.id = -1,
 	.name = "pata-rb532-cf",
 	.resource = cf_slot0_res,
 	.num_resources = ARRAY_SIZE(cf_slot0_res),
 };

 /* Resources and device for NAND */
 static int rb532_dev_ready(struct nand_chip *chip)
 {
 	return gpio_get_value(GPIO_RDY);
 }

 static void rb532_cmd_ctrl(struct nand_chip *chip, int cmd, unsigned int ctrl)
 {
 	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->legacy.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(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;

 	gpiod_add_lookup_table(&cf_slot0_gpio_table);
 	return platform_add_devices(rb532_devs, ARRAY_SIZE(rb532_devs));
 }

 #ifdef CONFIG_NET

 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 1;
 }

 __setup("kmac=", setup_kmac);

 #endif /* CONFIG_NET */

 arch_initcall(plat_setup_devices);
	// SPDX-License-Identifier: GPL-2.0-or-later
	/*
	* RouterBoard 500 Platform devices
	*
	* Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
	* Copyright (C) 2007 Florian Fainelli <florian@openwrt.org>
	*/
	#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/platnand.h>
	#include <linux/mtd/mtd.h>
	#include <linux/gpio.h>
	#include <linux/gpio/machine.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 = "emac",
	.start = ETH0_BASE_ADDR,
	.end = ETH0_BASE_ADDR + sizeof(struct eth_regs),
	.flags = IORESOURCE_MEM,
	}, {
	.name = "rx",
	.start = ETH0_DMA_RX_IRQ,
	.end = ETH0_DMA_RX_IRQ,
	.flags = IORESOURCE_IRQ
	}, {
	.name = "tx",
	.start = ETH0_DMA_TX_IRQ,
	.end = ETH0_DMA_TX_IRQ,
	.flags = IORESOURCE_IRQ
	}, {
	.name = "dma_rx",
	.start = ETH0_RX_DMA_ADDR,
	.end = ETH0_RX_DMA_ADDR + DMA_CHAN_OFFSET - 1,
	.flags = IORESOURCE_MEM,
	}, {
	.name = "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),
	.dev = {
	.platform_data = &korina_dev0_data.mac,
	}
	};

	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 gpiod_lookup_table cf_slot0_gpio_table = {
	.dev_id = "pata-rb532-cf",
	.table = {
	GPIO_LOOKUP("gpio0", CF_GPIO_NUM,
	NULL, GPIO_ACTIVE_HIGH),
	{ },
	},
	};

	static struct platform_device cf_slot0 = {
	.id = -1,
	.name = "pata-rb532-cf",
	.resource = cf_slot0_res,
	.num_resources = ARRAY_SIZE(cf_slot0_res),
	};

	/* Resources and device for NAND */
	static int rb532_dev_ready(struct nand_chip *chip)
	{
	return gpio_get_value(GPIO_RDY);
	}

	static void rb532_cmd_ctrl(struct nand_chip *chip, int cmd, unsigned int ctrl)
	{
	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->legacy.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(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;

	gpiod_add_lookup_table(&cf_slot0_gpio_table);
	return platform_add_devices(rb532_devs, ARRAY_SIZE(rb532_devs));
	}

	#ifdef CONFIG_NET

	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 1;
	}

	__setup("kmac=", setup_kmac);

	#endif /* CONFIG_NET */

	arch_initcall(plat_setup_devices);