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    /*
     * MTX-1 platform devices registration (Au1500)
     *
     * Copyright (C) 2007-2009, 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.
     *
     * You should have received a copy of the GNU General Public License
     * along with this program; if not, write to the Free Software
     * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
     */
    
    #include <linux/init.h>
    #include <linux/interrupt.h>
    #include <linux/kernel.h>
    #include <linux/platform_device.h>
    #include <linux/leds.h>
    #include <linux/gpio.h>
    #include <linux/gpio_keys.h>
    #include <linux/input.h>
    #include <linux/mtd/partitions.h>
    #include <linux/mtd/physmap.h>
    #include <mtd/mtd-abi.h>
    #include <asm/bootinfo.h>
    #include <asm/reboot.h>
    
    #include <asm/setup.h>
    
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    #include <asm/mach-au1x00/au1000.h>
    
    #include <asm/mach-au1x00/gpio-au1000.h>
    
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    #include <asm/mach-au1x00/au1xxx_eth.h>
    #include <prom.h>
    
    const char *get_system_type(void)
    {
    	return "MTX-1";
    }
    
    void __init prom_init(void)
    {
    	unsigned char *memsize_str;
    	unsigned long memsize;
    
    	prom_argc = fw_arg0;
    	prom_argv = (char **)fw_arg1;
    	prom_envp = (char **)fw_arg2;
    
    	prom_init_cmdline();
    
    	memsize_str = prom_getenv("memsize");
    
    	if (!memsize_str || kstrtoul(memsize_str, 0, &memsize))
    
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    		memsize = 0x04000000;
    	add_memory_region(0, memsize, BOOT_MEM_RAM);
    }
    
    
    void prom_putchar(char c)
    
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    {
    	alchemy_uart_putchar(AU1000_UART0_PHYS_ADDR, c);
    }
    
    static void mtx1_reset(char *c)
    {
    	/* Jump to the reset vector */
    	__asm__ __volatile__("jr\t%0" : : "r"(0xbfc00000));
    }
    
    static void mtx1_power_off(void)
    {
    	while (1)
    		asm volatile (
    		"	.set	mips32					\n"
    		"	wait						\n"
    		"	.set	mips0					\n");
    }
    
    void __init board_setup(void)
    {
    
    #if IS_ENABLED(CONFIG_USB_OHCI_HCD)
    
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    	/* Enable USB power switch */
    	alchemy_gpio_direction_output(204, 0);
    
    #endif /* IS_ENABLED(CONFIG_USB_OHCI_HCD) */
    
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    	/* Initialize sys_pinfunc */
    
    	alchemy_wrsys(SYS_PF_NI2, AU1000_SYS_PINFUNC);
    
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    	/* Initialize GPIO */
    
    	alchemy_wrsys(~0, AU1000_SYS_TRIOUTCLR);
    
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    	alchemy_gpio_direction_output(0, 0);	/* Disable M66EN (PCI 66MHz) */
    	alchemy_gpio_direction_output(3, 1);	/* Disable PCI CLKRUN# */
    	alchemy_gpio_direction_output(1, 1);	/* Enable EXT_IO3 */
    	alchemy_gpio_direction_output(5, 0);	/* Disable eth PHY TX_ER */
    
    	/* Enable LED and set it to green */
    	alchemy_gpio_direction_output(211, 1);	/* green on */
    	alchemy_gpio_direction_output(212, 0);	/* red off */
    
    	pm_power_off = mtx1_power_off;
    	_machine_halt = mtx1_power_off;
    	_machine_restart = mtx1_reset;
    
    	printk(KERN_INFO "4G Systems MTX-1 Board\n");
    }
    
    /******************************************************************************/
    
    static struct gpio_keys_button mtx1_gpio_button[] = {
    	{
    		.gpio = 207,
    		.code = BTN_0,
    		.desc = "System button",
    	}
    };
    
    static struct gpio_keys_platform_data mtx1_buttons_data = {
    	.buttons = mtx1_gpio_button,
    	.nbuttons = ARRAY_SIZE(mtx1_gpio_button),
    };
    
    static struct platform_device mtx1_button = {
    	.name = "gpio-keys",
    	.id = -1,
    	.dev = {
    		.platform_data = &mtx1_buttons_data,
    	}
    };
    
    static struct resource mtx1_wdt_res[] = {
    	[0] = {
    		.start	= 215,
    		.end	= 215,
    		.name	= "mtx1-wdt-gpio",
    		.flags	= IORESOURCE_IRQ,
    	}
    };
    
    static struct platform_device mtx1_wdt = {
    	.name = "mtx1-wdt",
    	.id = 0,
    	.num_resources = ARRAY_SIZE(mtx1_wdt_res),
    	.resource = mtx1_wdt_res,
    };
    
    
    static const struct gpio_led default_leds[] = {
    
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    	{
    		.name	= "mtx1:green",
    		.gpio = 211,
    	}, {
    		.name = "mtx1:red",
    		.gpio = 212,
    	},
    };
    
    static struct gpio_led_platform_data mtx1_led_data = {
    	.num_leds = ARRAY_SIZE(default_leds),
    	.leds = default_leds,
    };
    
    static struct platform_device mtx1_gpio_leds = {
    	.name = "leds-gpio",
    	.id = -1,
    	.dev = {
    		.platform_data = &mtx1_led_data,
    	}
    };
    
    static struct mtd_partition mtx1_mtd_partitions[] = {
    	{
    		.name	= "filesystem",
    		.size	= 0x01C00000,
    
    		.offset = 0,
    
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    	},
    	{
    		.name	= "yamon",
    		.size	= 0x00100000,
    
    		.offset = MTDPART_OFS_APPEND,
    
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    		.mask_flags = MTD_WRITEABLE,
    	},
    	{
    		.name	= "kernel",
    		.size	= 0x002c0000,
    
    		.offset = MTDPART_OFS_APPEND,
    
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    	},
    	{
    		.name	= "yamon env",
    		.size	= 0x00040000,
    
    		.offset = MTDPART_OFS_APPEND,
    
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    	},
    };
    
    static struct physmap_flash_data mtx1_flash_data = {
    	.width		= 4,
    	.nr_parts	= 4,
    	.parts		= mtx1_mtd_partitions,
    };
    
    static struct resource mtx1_mtd_resource = {
    	.start	= 0x1e000000,
    	.end	= 0x1fffffff,
    	.flags	= IORESOURCE_MEM,
    };
    
    static struct platform_device mtx1_mtd = {
    	.name		= "physmap-flash",
    	.dev		= {
    		.platform_data	= &mtx1_flash_data,
    	},
    	.num_resources	= 1,
    	.resource	= &mtx1_mtd_resource,
    };
    
    static struct resource alchemy_pci_host_res[] = {
    	[0] = {
    		.start	= AU1500_PCI_PHYS_ADDR,
    		.end	= AU1500_PCI_PHYS_ADDR + 0xfff,
    		.flags	= IORESOURCE_MEM,
    	},
    };
    
    static int mtx1_pci_idsel(unsigned int devsel, int assert)
    {
    	/* This function is only necessary to support a proprietary Cardbus
    	 * adapter on the mtx-1 "singleboard" variant. It triggers a custom
    	 * logic chip connected to EXT_IO3 (GPIO1) to suppress IDSEL signals.
    	 */
    
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    	if (assert && devsel != 0)
    		/* Suppress signal to Cardbus */
    		alchemy_gpio_set_value(1, 0);	/* set EXT_IO3 OFF */
    	else
    		alchemy_gpio_set_value(1, 1);	/* set EXT_IO3 ON */
    
    	udelay(1);
    	return 1;
    }
    
    static const char mtx1_irqtab[][5] = {
    	[0] = { -1, AU1500_PCI_INTA, AU1500_PCI_INTA, 0xff, 0xff }, /* IDSEL 00 - AdapterA-Slot0 (top) */
    	[1] = { -1, AU1500_PCI_INTB, AU1500_PCI_INTA, 0xff, 0xff }, /* IDSEL 01 - AdapterA-Slot1 (bottom) */
    	[2] = { -1, AU1500_PCI_INTC, AU1500_PCI_INTD, 0xff, 0xff }, /* IDSEL 02 - AdapterB-Slot0 (top) */
    	[3] = { -1, AU1500_PCI_INTD, AU1500_PCI_INTC, 0xff, 0xff }, /* IDSEL 03 - AdapterB-Slot1 (bottom) */
    	[4] = { -1, AU1500_PCI_INTA, AU1500_PCI_INTB, 0xff, 0xff }, /* IDSEL 04 - AdapterC-Slot0 (top) */
    	[5] = { -1, AU1500_PCI_INTB, AU1500_PCI_INTA, 0xff, 0xff }, /* IDSEL 05 - AdapterC-Slot1 (bottom) */
    	[6] = { -1, AU1500_PCI_INTC, AU1500_PCI_INTD, 0xff, 0xff }, /* IDSEL 06 - AdapterD-Slot0 (top) */
    	[7] = { -1, AU1500_PCI_INTD, AU1500_PCI_INTC, 0xff, 0xff }, /* IDSEL 07 - AdapterD-Slot1 (bottom) */
    };
    
    static int mtx1_map_pci_irq(const struct pci_dev *d, u8 slot, u8 pin)
    {
    	return mtx1_irqtab[slot][pin];
    }
    
    static struct alchemy_pci_platdata mtx1_pci_pd = {
    	.board_map_irq	 = mtx1_map_pci_irq,
    	.board_pci_idsel = mtx1_pci_idsel,
    	.pci_cfg_set	 = PCI_CONFIG_AEN | PCI_CONFIG_R2H | PCI_CONFIG_R1H |
    			   PCI_CONFIG_CH |
    #if defined(__MIPSEB__)
    			   PCI_CONFIG_SIC_HWA_DAT | PCI_CONFIG_SM,
    #else
    			   0,
    #endif
    };
    
    static struct platform_device mtx1_pci_host = {
    	.dev.platform_data = &mtx1_pci_pd,
    	.name		= "alchemy-pci",
    	.id		= 0,
    	.num_resources	= ARRAY_SIZE(alchemy_pci_host_res),
    	.resource	= alchemy_pci_host_res,
    };
    
    
    static struct platform_device *mtx1_devs[] __initdata = {
    
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    	&mtx1_pci_host,
    	&mtx1_gpio_leds,
    	&mtx1_wdt,
    	&mtx1_button,
    	&mtx1_mtd,
    };
    
    static struct au1000_eth_platform_data mtx1_au1000_eth0_pdata = {
    	.phy_search_highest_addr	= 1,
    	.phy1_search_mac0		= 1,
    };
    
    static int __init mtx1_register_devices(void)
    {
    	int rc;
    
    	irq_set_irq_type(AU1500_GPIO204_INT, IRQ_TYPE_LEVEL_HIGH);
    	irq_set_irq_type(AU1500_GPIO201_INT, IRQ_TYPE_LEVEL_LOW);
    	irq_set_irq_type(AU1500_GPIO202_INT, IRQ_TYPE_LEVEL_LOW);
    	irq_set_irq_type(AU1500_GPIO203_INT, IRQ_TYPE_LEVEL_LOW);
    	irq_set_irq_type(AU1500_GPIO205_INT, IRQ_TYPE_LEVEL_LOW);
    
    	au1xxx_override_eth_cfg(0, &mtx1_au1000_eth0_pdata);
    
    	rc = gpio_request(mtx1_gpio_button[0].gpio,
    					mtx1_gpio_button[0].desc);
    	if (rc < 0) {
    		printk(KERN_INFO "mtx1: failed to request %d\n",
    					mtx1_gpio_button[0].gpio);
    		goto out;
    	}
    	gpio_direction_input(mtx1_gpio_button[0].gpio);
    out:
    	return platform_add_devices(mtx1_devs, ARRAY_SIZE(mtx1_devs));
    }
    arch_initcall(mtx1_register_devices);