/* * Ralink RT3662/RT3883 SoC platform device registration * * Copyright (C) 2011-2012 Gabor Juhos <juhosg@openwrt.org> * * 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/platform_device.h> #include <linux/mtd/mtd.h> #include <linux/mtd/physmap.h> #include <linux/mtd/partitions.h> #include <linux/dma-mapping.h> #include <linux/delay.h> #include <linux/err.h> #include <linux/clk.h> #include <linux/rt2x00_platform.h> #include <asm/addrspace.h> #include <asm/mach-ralink/rt3883.h> #include <asm/mach-ralink/rt3883_regs.h> #include <asm/mach-ralink/rt3883_ehci_platform.h> #include <asm/mach-ralink/rt3883_ohci_platform.h> #include <asm/mach-ralink/ramips_nand_platform.h> #include "devices.h" #include <ramips_eth_platform.h> static struct resource rt3883_flash0_resources[] = { { .flags = IORESOURCE_MEM, .start = RT3883_BOOT_BASE, .end = RT3883_BOOT_BASE + RT3883_BOOT_SIZE - 1, }, }; struct physmap_flash_data rt3883_flash0_data; static struct platform_device rt3883_flash0_device = { .name = "physmap-flash", .resource = rt3883_flash0_resources, .num_resources = ARRAY_SIZE(rt3883_flash0_resources), .dev = { .platform_data = &rt3883_flash0_data, }, }; static struct resource rt3883_flash1_resources[] = { { .flags = IORESOURCE_MEM, .start = RT3883_SRAM_BASE, .end = RT3883_SRAM_BASE + RT3883_SRAM_SIZE - 1, }, }; struct physmap_flash_data rt3883_flash1_data; static struct platform_device rt3883_flash1_device = { .name = "physmap-flash", .resource = rt3883_flash1_resources, .num_resources = ARRAY_SIZE(rt3883_flash1_resources), .dev = { .platform_data = &rt3883_flash1_data, }, }; static int rt3883_flash_instance __initdata; void __init rt3883_register_pflash(unsigned int id) { struct platform_device *pdev; struct physmap_flash_data *pdata; void __iomem *fscc_base; u32 t; int reg; switch (id) { case 0: pdev = &rt3883_flash0_device; reg = RT3883_FSCC_REG_FLASH_CFG0; break; case 1: pdev = &rt3883_flash1_device; reg = RT3883_FSCC_REG_FLASH_CFG1; break; default: return; } pdata = pdev->dev.platform_data; fscc_base = ioremap(RT3883_FSCC_BASE, RT3883_FSCC_SIZE); if (!fscc_base) panic("RT3883: ioremap failed for FSCC"); t = __raw_readl(fscc_base + reg); iounmap(fscc_base); t = (t >> RT3883_FLASH_CFG_WIDTH_SHIFT) & RT3883_FLASH_CFG_WIDTH_MASK; switch (t) { case RT3883_FLASH_CFG_WIDTH_8BIT: pdata->width = 1; break; case RT3883_FLASH_CFG_WIDTH_16BIT: pdata->width = 2; break; case RT3883_FLASH_CFG_WIDTH_32BIT: if (id == 1) { pdata->width = 4; break; } /* fallthrough */ default: pr_warn("RT3883: flash bank%d: invalid width detected\n", id); return; } pdev->id = rt3883_flash_instance; platform_device_register(pdev); rt3883_flash_instance++; } static atomic_t rt3883_usb_use_count = ATOMIC_INIT(0); static void rt3883_usb_host_start(void) { u32 t; if (atomic_inc_return(&rt3883_usb_use_count) != 1) return; t = rt3883_sysc_rr(RT3883_SYSC_REG_USB_PS); #if 0 /* put the HOST controller into reset */ t = rt3883_sysc_rr(RT3883_SYSC_REG_RSTCTRL); t |= RT3883_RSTCTRL_UHST; rt3883_sysc_wr(t, RT3883_SYSC_REG_RSTCTRL); #endif /* enable clock for port0's and port1's phys */ t = rt3883_sysc_rr(RT3883_SYSC_REG_CLKCFG1); t = t | RT3883_CLKCFG1_UPHY0_CLK_EN | RT3883_CLKCFG1_UPHY1_CLK_EN; rt3883_sysc_wr(t, RT3883_SYSC_REG_CLKCFG1); mdelay(500); /* pull USBHOST and USBDEV out from reset */ t = rt3883_sysc_rr(RT3883_SYSC_REG_RSTCTRL); t &= ~(RT3883_RSTCTRL_UHST | RT3883_RSTCTRL_UDEV); rt3883_sysc_wr(t, RT3883_SYSC_REG_RSTCTRL); mdelay(500); /* enable host mode */ t = rt3883_sysc_rr(RT3883_SYSC_REG_SYSCFG1); t |= RT3883_SYSCFG1_USB0_HOST_MODE; rt3883_sysc_wr(t, RT3883_SYSC_REG_SYSCFG1); t = rt3883_sysc_rr(RT3883_SYSC_REG_USB_PS); } static void rt3883_usb_host_stop(void) { u32 t; if (atomic_dec_return(&rt3883_usb_use_count) != 0) return; /* put USBHOST and USBDEV into reset */ t = rt3883_sysc_rr(RT3883_SYSC_REG_RSTCTRL); t |= RT3883_RSTCTRL_UHST | RT3883_RSTCTRL_UDEV; rt3883_sysc_wr(t, RT3883_SYSC_REG_RSTCTRL); udelay(10000); /* disable clock for port0's and port1's phys*/ t = rt3883_sysc_rr(RT3883_SYSC_REG_CLKCFG1); t &= ~(RT3883_CLKCFG1_UPHY0_CLK_EN | RT3883_CLKCFG1_UPHY1_CLK_EN); rt3883_sysc_wr(t, RT3883_SYSC_REG_CLKCFG1); udelay(10000); } static struct rt3883_ehci_platform_data rt3883_ehci_data = { .start_hw = rt3883_usb_host_start, .stop_hw = rt3883_usb_host_stop, }; static struct resource rt3883_ehci_resources[] = { { .start = RT3883_EHCI_BASE, .end = RT3883_EHCI_BASE + PAGE_SIZE - 1, .flags = IORESOURCE_MEM, }, { .start = RT3883_INTC_IRQ_UHST, .end = RT3883_INTC_IRQ_UHST, .flags = IORESOURCE_IRQ, }, }; static u64 rt3883_ehci_dmamask = DMA_BIT_MASK(32); static struct platform_device rt3883_ehci_device = { .name = "rt3883-ehci", .id = -1, .resource = rt3883_ehci_resources, .num_resources = ARRAY_SIZE(rt3883_ehci_resources), .dev = { .dma_mask = &rt3883_ehci_dmamask, .coherent_dma_mask = DMA_BIT_MASK(32), .platform_data = &rt3883_ehci_data, }, }; static struct resource rt3883_ohci_resources[] = { { .start = RT3883_OHCI_BASE, .end = RT3883_OHCI_BASE + PAGE_SIZE - 1, .flags = IORESOURCE_MEM, }, { .start = RT3883_INTC_IRQ_UHST, .end = RT3883_INTC_IRQ_UHST, .flags = IORESOURCE_IRQ, }, }; static struct rt3883_ohci_platform_data rt3883_ohci_data = { .start_hw = rt3883_usb_host_start, .stop_hw = rt3883_usb_host_stop, }; static u64 rt3883_ohci_dmamask = DMA_BIT_MASK(32); static struct platform_device rt3883_ohci_device = { .name = "rt3883-ohci", .id = -1, .resource = rt3883_ohci_resources, .num_resources = ARRAY_SIZE(rt3883_ohci_resources), .dev = { .dma_mask = &rt3883_ohci_dmamask, .coherent_dma_mask = DMA_BIT_MASK(32), .platform_data = &rt3883_ohci_data, }, }; void __init rt3883_register_usbhost(void) { platform_device_register(&rt3883_ehci_device); platform_device_register(&rt3883_ohci_device); } static void rt3883_fe_reset(void) { u32 t; t = rt3883_sysc_rr(RT3883_SYSC_REG_RSTCTRL); t |= RT3883_RSTCTRL_FE; rt3883_sysc_wr(t , RT3883_SYSC_REG_RSTCTRL); t &= ~RT3883_RSTCTRL_FE; rt3883_sysc_wr(t, RT3883_SYSC_REG_RSTCTRL); } static struct resource rt3883_eth_resources[] = { { .start = RT3883_FE_BASE, .end = RT3883_FE_BASE + PAGE_SIZE - 1, .flags = IORESOURCE_MEM, }, { .start = RT3883_CPU_IRQ_FE, .end = RT3883_CPU_IRQ_FE, .flags = IORESOURCE_IRQ, }, }; struct ramips_eth_platform_data rt3883_eth_data = { .mac = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55 }, .reset_fe = rt3883_fe_reset, .min_pkt_len = 64, }; static struct platform_device rt3883_eth_device = { .name = "ramips_eth", .resource = rt3883_eth_resources, .num_resources = ARRAY_SIZE(rt3883_eth_resources), .dev = { .platform_data = &rt3883_eth_data, } }; void __init rt3883_register_ethernet(void) { struct clk *clk; clk = clk_get(NULL, "sys"); if (IS_ERR(clk)) panic("unable to get SYS clock, err=%ld", PTR_ERR(clk)); rt3883_eth_data.sys_freq = clk_get_rate(clk); platform_device_register(&rt3883_eth_device); } static struct resource rt3883_wlan_resources[] = { { .start = RT3883_WLAN_BASE, .end = RT3883_WLAN_BASE + 0x3FFFF, .flags = IORESOURCE_MEM, }, { .start = RT3883_CPU_IRQ_WLAN, .end = RT3883_CPU_IRQ_WLAN, .flags = IORESOURCE_IRQ, }, }; struct rt2x00_platform_data rt3883_wlan_data; static struct platform_device rt3883_wlan_device = { .name = "rt2800_wmac", .resource = rt3883_wlan_resources, .num_resources = ARRAY_SIZE(rt3883_wlan_resources), .dev = { .platform_data = &rt3883_wlan_data, } }; void __init rt3883_register_wlan(void) { rt3883_wlan_data.eeprom_file_name = "RT3883.eeprom", platform_device_register(&rt3883_wlan_device); } static struct resource rt3883_wdt_resources[] = { { .start = RT3883_TIMER_BASE, .end = RT3883_TIMER_BASE + RT3883_TIMER_SIZE - 1, .flags = IORESOURCE_MEM, }, }; static struct platform_device rt3883_wdt_device = { .name = "ramips-wdt", .id = -1, .resource = rt3883_wdt_resources, .num_resources = ARRAY_SIZE(rt3883_wdt_resources), }; void __init rt3883_register_wdt(bool enable_reset) { if (enable_reset) { u32 t; /* enable WDT reset output on GPIO 2 */ t = rt3883_sysc_rr(RT3883_SYSC_REG_SYSCFG1); t |= RT3883_SYSCFG1_GPIO2_AS_WDT_OUT; rt3883_sysc_wr(t, RT3883_SYSC_REG_SYSCFG1); } platform_device_register(&rt3883_wdt_device); } static struct resource rt3883_nand_resources[] = { { .flags = IORESOURCE_MEM, .start = RT3883_NANDC_BASE, .end = RT3883_NANDC_BASE + RT3883_NANDC_SIZE - 1, }, }; struct ramips_nand_platform_data rt3883_nand_data; static struct platform_device rt3883_nand_device = { .name = RAMIPS_NAND_DRIVER_NAME, .id = -1, .resource = rt3883_nand_resources, .num_resources = ARRAY_SIZE(rt3883_nand_resources), .dev = { .platform_data = &rt3883_nand_data, }, }; void __init rt3883_register_nand(void) { platform_device_register(&rt3883_nand_device); }