diff options
Diffstat (limited to 'target/linux/ramips/files-3.7/arch/mips/ralink/rt3883/devices.c')
-rw-r--r-- | target/linux/ramips/files-3.7/arch/mips/ralink/rt3883/devices.c | 398 |
1 files changed, 398 insertions, 0 deletions
diff --git a/target/linux/ramips/files-3.7/arch/mips/ralink/rt3883/devices.c b/target/linux/ramips/files-3.7/arch/mips/ralink/rt3883/devices.c new file mode 100644 index 0000000..6077e97 --- /dev/null +++ b/target/linux/ramips/files-3.7/arch/mips/ralink/rt3883/devices.c @@ -0,0 +1,398 @@ +/* + * 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/spi/spi.h> +#include <linux/delay.h> +#include <linux/err.h> +#include <linux/clk.h> +#include <linux/rt2x00_platform.h> +#include <linux/usb/ehci_pdriver.h> +#include <linux/usb/ohci_pdriver.h> + +#include <asm/addrspace.h> + +#include <asm/mach-ralink/rt3883.h> +#include <asm/mach-ralink/rt3883_regs.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_pwr_ref = ATOMIC_INIT(0); + +static int rt3883_usb_power_on(struct platform_device *pdev) +{ + + if (atomic_inc_return(&rt3883_usb_pwr_ref) == 1) { + u32 t; + + t = rt3883_sysc_rr(RT3883_SYSC_REG_USB_PS); + + /* enable 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); + 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); + } + + return 0; +} + +static void rt3883_usb_power_off(struct platform_device *pdev) +{ + if (atomic_dec_return(&rt3883_usb_pwr_ref) == 0) { + u32 t; + + /* 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 usb_ehci_pdata rt3883_ehci_data = { + .power_on = rt3883_usb_power_on, + .power_off = rt3883_usb_power_off, +}; + +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 = "ehci-platform", + .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 usb_ohci_pdata rt3883_ohci_data = { + .power_on = rt3883_usb_power_on, + .power_off = rt3883_usb_power_off, +}; + +static u64 rt3883_ohci_dmamask = DMA_BIT_MASK(32); +static struct platform_device rt3883_ohci_device = { + .name = "ohci-platform", + .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 = "soc_wmac.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); +} + +static struct resource rt3883_spi_resources[] = { + { + .flags = IORESOURCE_MEM, + .start = RT3883_SPI_BASE, + .end = RT3883_SPI_BASE + RT3883_SPI_SIZE - 1, + }, +}; + +static struct platform_device rt3883_spi_device = { + .name = "ramips-spi", + .id = 0, + .resource = rt3883_spi_resources, + .num_resources = ARRAY_SIZE(rt3883_spi_resources), +}; + +void __init rt3883_register_spi(struct spi_board_info *info, int n) +{ + spi_register_board_info(info, n); + platform_device_register(&rt3883_spi_device); +} + |