/* * Copyright STMicroelectronics, 2007. * * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "cpu-8815.h" /* The 8815 has 4 GPIO blocks, let's register them immediately */ static resource_size_t __initdata cpu8815_gpio_base[] = { NOMADIK_GPIO0_BASE, NOMADIK_GPIO1_BASE, NOMADIK_GPIO2_BASE, NOMADIK_GPIO3_BASE, }; static struct platform_device * cpu8815_add_gpio(int id, resource_size_t addr, int irq, struct nmk_gpio_platform_data *pdata) { struct resource resources[] = { { .start = addr, .end = addr + 127, .flags = IORESOURCE_MEM, }, { .start = irq, .end = irq, .flags = IORESOURCE_IRQ, } }; return platform_device_register_resndata(NULL, "gpio", id, resources, ARRAY_SIZE(resources), pdata, sizeof(*pdata)); } void cpu8815_add_gpios(resource_size_t *base, int num, int irq, struct nmk_gpio_platform_data *pdata) { int first = 0; int i; for (i = 0; i < num; i++, first += 32, irq++) { pdata->first_gpio = first; pdata->first_irq = NOMADIK_GPIO_TO_IRQ(first); pdata->num_gpio = 32; cpu8815_add_gpio(i, base[i], irq, pdata); } } static unsigned long out_low[] = { PIN_OUTPUT_LOW }; static unsigned long out_high[] = { PIN_OUTPUT_HIGH }; static unsigned long in_nopull[] = { PIN_INPUT_NOPULL }; static unsigned long in_pullup[] = { PIN_INPUT_PULLUP }; static struct pinctrl_map __initdata nhk8815_pinmap[] = { PIN_MAP_MUX_GROUP_DEFAULT("uart0", "pinctrl-stn8815", "u0_a_1", "u0"), PIN_MAP_MUX_GROUP_DEFAULT("uart1", "pinctrl-stn8815", "u1_a_1", "u1"), /* Hog in MMC/SD card mux */ PIN_MAP_MUX_GROUP_HOG_DEFAULT("pinctrl-stn8815", "mmcsd_a_1", "mmcsd"), /* MCCLK */ PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO8_B10", out_low), /* MCCMD */ PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO9_A10", in_pullup), /* MCCMDDIR */ PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO10_C11", out_high), /* MCDAT3-0 */ PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO11_B11", in_pullup), PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO12_A11", in_pullup), PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO13_C12", in_pullup), PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO14_B12", in_pullup), /* MCDAT0DIR */ PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO15_A12", out_high), /* MCDAT31DIR */ PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO16_C13", out_high), /* MCMSFBCLK */ PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO24_C15", in_pullup), /* CD input GPIO */ PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO111_H21", in_nopull), /* CD bias drive */ PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO112_J21", out_low), /* I2C0 */ PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO62_D3", in_pullup), PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO63_D2", in_pullup), /* I2C1 */ PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO53_L4", in_pullup), PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO54_L3", in_pullup), /* I2C2 */ PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO73_C21", in_pullup), PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO74_C20", in_pullup), }; static inline void cpu8815_add_pinctrl(struct device *parent, const char *name) { struct platform_device_info pdevinfo = { .parent = parent, .name = name, .id = -1, }; pinctrl_register_mappings(nhk8815_pinmap, ARRAY_SIZE(nhk8815_pinmap)); platform_device_register_full(&pdevinfo); } static int __init cpu8815_init(void) { struct nmk_gpio_platform_data pdata = { /* No custom data yet */ }; /* For e.g. device tree boots */ if (!machine_is_nomadik()) return 0; cpu8815_add_gpios(cpu8815_gpio_base, ARRAY_SIZE(cpu8815_gpio_base), IRQ_GPIO0, &pdata); cpu8815_add_pinctrl(NULL, "pinctrl-stn8815"); amba_apb_device_add(NULL, "rng", NOMADIK_RNG_BASE, SZ_4K, 0, 0, NULL, 0); amba_apb_device_add(NULL, "rtc-pl031", NOMADIK_RTC_BASE, SZ_4K, IRQ_RTC_RTT, 0, NULL, 0); return 0; } arch_initcall(cpu8815_init); /* All SoC devices live in the same area (see hardware.h) */ static struct map_desc nomadik_io_desc[] __initdata = { { .virtual = NOMADIK_IO_VIRTUAL, .pfn = __phys_to_pfn(NOMADIK_IO_PHYSICAL), .length = NOMADIK_IO_SIZE, .type = MT_DEVICE, } /* static ram and secured ram may be added later */ }; void __init cpu8815_map_io(void) { iotable_init(nomadik_io_desc, ARRAY_SIZE(nomadik_io_desc)); } void __init cpu8815_init_irq(void) { /* This modified VIC cell has two register blocks, at 0 and 0x20 */ vic_init(io_p2v(NOMADIK_IC_BASE + 0x00), IRQ_VIC_START + 0, ~0, 0); vic_init(io_p2v(NOMADIK_IC_BASE + 0x20), IRQ_VIC_START + 32, ~0, 0); /* * Init clocks here so that they are available for system timer * initialization. */ nomadik_clk_init(); } /* * This function is called from the board init ("init_machine"). */ void __init cpu8815_platform_init(void) { #ifdef CONFIG_CACHE_L2X0 /* At full speed latency must be >=2, so 0x249 in low bits */ l2x0_init(io_p2v(NOMADIK_L2CC_BASE), 0x00730249, 0xfe000fff); #endif return; } void cpu8815_restart(char mode, const char *cmd) { void __iomem *src_rstsr = io_p2v(NOMADIK_SRC_BASE + 0x18); /* FIXME: use egpio when implemented */ /* Write anything to Reset status register */ writel(1, src_rstsr); } #ifdef CONFIG_OF /* Initial value for SRC control register: all timers use MXTAL/8 source */ #define SRC_CR_INIT_MASK 0x00007fff #define SRC_CR_INIT_VAL 0x2aaa8000 static void __init cpu8815_timer_init_of(void) { struct device_node *mtu; void __iomem *base; int irq; u32 src_cr; /* We need this to be up now */ nomadik_clk_init(); mtu = of_find_node_by_path("/mtu0"); if (!mtu) return; base = of_iomap(mtu, 0); if (WARN_ON(!base)) return; irq = irq_of_parse_and_map(mtu, 0); pr_info("Remapped MTU @ %p, irq: %d\n", base, irq); /* Configure timer sources in "system reset controller" ctrl reg */ src_cr = readl(base); src_cr &= SRC_CR_INIT_MASK; src_cr |= SRC_CR_INIT_VAL; writel(src_cr, base); nmdk_timer_init(base, irq); } static struct fsmc_nand_timings cpu8815_nand_timings = { .thiz = 0, .thold = 0x10, .twait = 0x0A, .tset = 0, }; static struct fsmc_nand_platform_data cpu8815_nand_data = { .nand_timings = &cpu8815_nand_timings, }; /* * The SMSC911x IRQ is connected to a GPIO pin, but the driver expects * to simply request an IRQ passed as a resource. So the GPIO pin needs * to be requested by this hog and set as input. */ static int __init cpu8815_eth_init(void) { struct device_node *eth; int gpio, irq, err; eth = of_find_node_by_path("/usb-s8815/ethernet-gpio"); if (!eth) { pr_info("could not find any ethernet GPIO\n"); return 0; } gpio = of_get_gpio(eth, 0); err = gpio_request(gpio, "eth_irq"); if (err) { pr_info("failed to request ethernet GPIO\n"); return -ENODEV; } err = gpio_direction_input(gpio); if (err) { pr_info("failed to set ethernet GPIO as input\n"); return -ENODEV; } irq = gpio_to_irq(gpio); pr_info("enabled USB-S8815 ethernet GPIO %d, IRQ %d\n", gpio, irq); return 0; } device_initcall(cpu8815_eth_init); /* These are mostly to get the right device names for the clock lookups */ static struct of_dev_auxdata cpu8815_auxdata_lookup[] __initdata = { OF_DEV_AUXDATA("st,nomadik-gpio", NOMADIK_GPIO0_BASE, "gpio.0", NULL), OF_DEV_AUXDATA("st,nomadik-gpio", NOMADIK_GPIO1_BASE, "gpio.1", NULL), OF_DEV_AUXDATA("st,nomadik-gpio", NOMADIK_GPIO2_BASE, "gpio.2", NULL), OF_DEV_AUXDATA("st,nomadik-gpio", NOMADIK_GPIO3_BASE, "gpio.3", NULL), OF_DEV_AUXDATA("stericsson,nmk-pinctrl-stn8815", 0, "pinctrl-stn8815", NULL), OF_DEV_AUXDATA("arm,primecell", NOMADIK_UART0_BASE, "uart0", NULL), OF_DEV_AUXDATA("arm,primecell", NOMADIK_UART1_BASE, "uart1", NULL), OF_DEV_AUXDATA("arm,primecell", NOMADIK_RNG_BASE, "rng", NULL), OF_DEV_AUXDATA("arm,primecell", NOMADIK_RTC_BASE, "rtc-pl031", NULL), OF_DEV_AUXDATA("stericsson,fsmc-nand", NOMADIK_FSMC_BASE, "fsmc-nand", &cpu8815_nand_data), { /* sentinel */ }, }; static void __init cpu8815_init_of(void) { #ifdef CONFIG_CACHE_L2X0 /* At full speed latency must be >=2, so 0x249 in low bits */ l2x0_of_init(0x00730249, 0xfe000fff); #endif pinctrl_register_mappings(nhk8815_pinmap, ARRAY_SIZE(nhk8815_pinmap)); of_platform_populate(NULL, of_default_bus_match_table, cpu8815_auxdata_lookup, NULL); } static const char * cpu8815_board_compat[] = { "calaosystems,usb-s8815", NULL, }; DT_MACHINE_START(NOMADIK_DT, "Nomadik STn8815") .map_io = cpu8815_map_io, .init_irq = irqchip_init, .init_time = cpu8815_timer_init_of, .init_machine = cpu8815_init_of, .restart = cpu8815_restart, .dt_compat = cpu8815_board_compat, MACHINE_END #endif