/* * linux/arch/arm/mach-integrator/integrator_cp.c * * Copyright (C) 2003 Deep Blue Solutions Ltd * * 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. */ #include <linux/types.h> #include <linux/kernel.h> #include <linux/init.h> #include <linux/list.h> #include <linux/platform_device.h> #include <linux/dma-mapping.h> #include <linux/slab.h> #include <linux/string.h> #include <linux/sysdev.h> #include <linux/amba/bus.h> #include <linux/amba/kmi.h> #include <linux/amba/clcd.h> #include <asm/hardware.h> #include <asm/io.h> #include <asm/irq.h> #include <asm/setup.h> #include <asm/mach-types.h> #include <asm/hardware/icst525.h> #include <asm/arch/cm.h> #include <asm/arch/lm.h> #include <asm/mach/arch.h> #include <asm/mach/flash.h> #include <asm/mach/irq.h> #include <asm/mach/mmc.h> #include <asm/mach/map.h> #include <asm/mach/time.h> #include "common.h" #include "clock.h" #define INTCP_PA_MMC_BASE 0x1c000000 #define INTCP_PA_AACI_BASE 0x1d000000 #define INTCP_PA_FLASH_BASE 0x24000000 #define INTCP_FLASH_SIZE SZ_32M #define INTCP_PA_CLCD_BASE 0xc0000000 #define INTCP_VA_CIC_BASE 0xf1000040 #define INTCP_VA_PIC_BASE 0xf1400000 #define INTCP_VA_SIC_BASE 0xfca00000 #define INTCP_PA_ETH_BASE 0xc8000000 #define INTCP_ETH_SIZE 0x10 #define INTCP_VA_CTRL_BASE 0xfcb00000 #define INTCP_FLASHPROG 0x04 #define CINTEGRATOR_FLASHPROG_FLVPPEN (1 << 0) #define CINTEGRATOR_FLASHPROG_FLWREN (1 << 1) /* * Logical Physical * f1000000 10000000 Core module registers * f1100000 11000000 System controller registers * f1200000 12000000 EBI registers * f1300000 13000000 Counter/Timer * f1400000 14000000 Interrupt controller * f1600000 16000000 UART 0 * f1700000 17000000 UART 1 * f1a00000 1a000000 Debug LEDs * f1b00000 1b000000 GPIO */ static struct map_desc intcp_io_desc[] __initdata = { { .virtual = IO_ADDRESS(INTEGRATOR_HDR_BASE), .pfn = __phys_to_pfn(INTEGRATOR_HDR_BASE), .length = SZ_4K, .type = MT_DEVICE }, { .virtual = IO_ADDRESS(INTEGRATOR_SC_BASE), .pfn = __phys_to_pfn(INTEGRATOR_SC_BASE), .length = SZ_4K, .type = MT_DEVICE }, { .virtual = IO_ADDRESS(INTEGRATOR_EBI_BASE), .pfn = __phys_to_pfn(INTEGRATOR_EBI_BASE), .length = SZ_4K, .type = MT_DEVICE }, { .virtual = IO_ADDRESS(INTEGRATOR_CT_BASE), .pfn = __phys_to_pfn(INTEGRATOR_CT_BASE), .length = SZ_4K, .type = MT_DEVICE }, { .virtual = IO_ADDRESS(INTEGRATOR_IC_BASE), .pfn = __phys_to_pfn(INTEGRATOR_IC_BASE), .length = SZ_4K, .type = MT_DEVICE }, { .virtual = IO_ADDRESS(INTEGRATOR_UART0_BASE), .pfn = __phys_to_pfn(INTEGRATOR_UART0_BASE), .length = SZ_4K, .type = MT_DEVICE }, { .virtual = IO_ADDRESS(INTEGRATOR_UART1_BASE), .pfn = __phys_to_pfn(INTEGRATOR_UART1_BASE), .length = SZ_4K, .type = MT_DEVICE }, { .virtual = IO_ADDRESS(INTEGRATOR_DBG_BASE), .pfn = __phys_to_pfn(INTEGRATOR_DBG_BASE), .length = SZ_4K, .type = MT_DEVICE }, { .virtual = IO_ADDRESS(INTEGRATOR_GPIO_BASE), .pfn = __phys_to_pfn(INTEGRATOR_GPIO_BASE), .length = SZ_4K, .type = MT_DEVICE }, { .virtual = 0xfca00000, .pfn = __phys_to_pfn(0xca000000), .length = SZ_4K, .type = MT_DEVICE }, { .virtual = 0xfcb00000, .pfn = __phys_to_pfn(0xcb000000), .length = SZ_4K, .type = MT_DEVICE } }; static void __init intcp_map_io(void) { iotable_init(intcp_io_desc, ARRAY_SIZE(intcp_io_desc)); } #define cic_writel __raw_writel #define cic_readl __raw_readl #define pic_writel __raw_writel #define pic_readl __raw_readl #define sic_writel __raw_writel #define sic_readl __raw_readl static void cic_mask_irq(unsigned int irq) { irq -= IRQ_CIC_START; cic_writel(1 << irq, INTCP_VA_CIC_BASE + IRQ_ENABLE_CLEAR); } static void cic_unmask_irq(unsigned int irq) { irq -= IRQ_CIC_START; cic_writel(1 << irq, INTCP_VA_CIC_BASE + IRQ_ENABLE_SET); } static struct irq_chip cic_chip = { .name = "CIC", .ack = cic_mask_irq, .mask = cic_mask_irq, .unmask = cic_unmask_irq, }; static void pic_mask_irq(unsigned int irq) { irq -= IRQ_PIC_START; pic_writel(1 << irq, INTCP_VA_PIC_BASE + IRQ_ENABLE_CLEAR); } static void pic_unmask_irq(unsigned int irq) { irq -= IRQ_PIC_START; pic_writel(1 << irq, INTCP_VA_PIC_BASE + IRQ_ENABLE_SET); } static struct irq_chip pic_chip = { .name = "PIC", .ack = pic_mask_irq, .mask = pic_mask_irq, .unmask = pic_unmask_irq, }; static void sic_mask_irq(unsigned int irq) { irq -= IRQ_SIC_START; sic_writel(1 << irq, INTCP_VA_SIC_BASE + IRQ_ENABLE_CLEAR); } static void sic_unmask_irq(unsigned int irq) { irq -= IRQ_SIC_START; sic_writel(1 << irq, INTCP_VA_SIC_BASE + IRQ_ENABLE_SET); } static struct irq_chip sic_chip = { .name = "SIC", .ack = sic_mask_irq, .mask = sic_mask_irq, .unmask = sic_unmask_irq, }; static void sic_handle_irq(unsigned int irq, struct irq_desc *desc) { unsigned long status = sic_readl(INTCP_VA_SIC_BASE + IRQ_STATUS); if (status == 0) { do_bad_IRQ(irq, desc); return; } do { irq = ffs(status) - 1; status &= ~(1 << irq); irq += IRQ_SIC_START; desc = irq_desc + irq; desc_handle_irq(irq, desc); } while (status); } static void __init intcp_init_irq(void) { unsigned int i; /* * Disable all interrupt sources */ pic_writel(0xffffffff, INTCP_VA_PIC_BASE + IRQ_ENABLE_CLEAR); pic_writel(0xffffffff, INTCP_VA_PIC_BASE + FIQ_ENABLE_CLEAR); for (i = IRQ_PIC_START; i <= IRQ_PIC_END; i++) { if (i == 11) i = 22; if (i == 29) break; set_irq_chip(i, &pic_chip); set_irq_handler(i, handle_level_irq); set_irq_flags(i, IRQF_VALID | IRQF_PROBE); } cic_writel(0xffffffff, INTCP_VA_CIC_BASE + IRQ_ENABLE_CLEAR); cic_writel(0xffffffff, INTCP_VA_CIC_BASE + FIQ_ENABLE_CLEAR); for (i = IRQ_CIC_START; i <= IRQ_CIC_END; i++) { set_irq_chip(i, &cic_chip); set_irq_handler(i, handle_level_irq); set_irq_flags(i, IRQF_VALID); } sic_writel(0x00000fff, INTCP_VA_SIC_BASE + IRQ_ENABLE_CLEAR); sic_writel(0x00000fff, INTCP_VA_SIC_BASE + FIQ_ENABLE_CLEAR); for (i = IRQ_SIC_START; i <= IRQ_SIC_END; i++) { set_irq_chip(i, &sic_chip); set_irq_handler(i, handle_level_irq); set_irq_flags(i, IRQF_VALID | IRQF_PROBE); } set_irq_chained_handler(IRQ_CP_CPPLDINT, sic_handle_irq); } /* * Clock handling */ #define CM_LOCK (IO_ADDRESS(INTEGRATOR_HDR_BASE)+INTEGRATOR_HDR_LOCK_OFFSET) #define CM_AUXOSC (IO_ADDRESS(INTEGRATOR_HDR_BASE)+0x1c) static const struct icst525_params cp_auxvco_params = { .ref = 24000, .vco_max = 320000, .vd_min = 8, .vd_max = 263, .rd_min = 3, .rd_max = 65, }; static void cp_auxvco_set(struct clk *clk, struct icst525_vco vco) { u32 val; val = readl(CM_AUXOSC) & ~0x7ffff; val |= vco.v | (vco.r << 9) | (vco.s << 16); writel(0xa05f, CM_LOCK); writel(val, CM_AUXOSC); writel(0, CM_LOCK); } static struct clk cp_clcd_clk = { .name = "CLCDCLK", .params = &cp_auxvco_params, .setvco = cp_auxvco_set, }; static struct clk cp_mmci_clk = { .name = "MCLK", .rate = 14745600, }; /* * Flash handling. */ static int intcp_flash_init(void) { u32 val; val = readl(INTCP_VA_CTRL_BASE + INTCP_FLASHPROG); val |= CINTEGRATOR_FLASHPROG_FLWREN; writel(val, INTCP_VA_CTRL_BASE + INTCP_FLASHPROG); return 0; } static void intcp_flash_exit(void) { u32 val; val = readl(INTCP_VA_CTRL_BASE + INTCP_FLASHPROG); val &= ~(CINTEGRATOR_FLASHPROG_FLVPPEN|CINTEGRATOR_FLASHPROG_FLWREN); writel(val, INTCP_VA_CTRL_BASE + INTCP_FLASHPROG); } static void intcp_flash_set_vpp(int on) { u32 val; val = readl(INTCP_VA_CTRL_BASE + INTCP_FLASHPROG); if (on) val |= CINTEGRATOR_FLASHPROG_FLVPPEN; else val &= ~CINTEGRATOR_FLASHPROG_FLVPPEN; writel(val, INTCP_VA_CTRL_BASE + INTCP_FLASHPROG); } static struct flash_platform_data intcp_flash_data = { .map_name = "cfi_probe", .width = 4, .init = intcp_flash_init, .exit = intcp_flash_exit, .set_vpp = intcp_flash_set_vpp, }; static struct resource intcp_flash_resource = { .start = INTCP_PA_FLASH_BASE, .end = INTCP_PA_FLASH_BASE + INTCP_FLASH_SIZE - 1, .flags = IORESOURCE_MEM, }; static struct platform_device intcp_flash_device = { .name = "armflash", .id = 0, .dev = { .platform_data = &intcp_flash_data, }, .num_resources = 1, .resource = &intcp_flash_resource, }; static struct resource smc91x_resources[] = { [0] = { .start = INTCP_PA_ETH_BASE, .end = INTCP_PA_ETH_BASE + INTCP_ETH_SIZE - 1, .flags = IORESOURCE_MEM, }, [1] = { .start = IRQ_CP_ETHINT, .end = IRQ_CP_ETHINT, .flags = IORESOURCE_IRQ, }, }; static struct platform_device smc91x_device = { .name = "smc91x", .id = 0, .num_resources = ARRAY_SIZE(smc91x_resources), .resource = smc91x_resources, }; static struct platform_device *intcp_devs[] __initdata = { &intcp_flash_device, &smc91x_device, }; /* * It seems that the card insertion interrupt remains active after * we've acknowledged it. We therefore ignore the interrupt, and * rely on reading it from the SIC. This also means that we must * clear the latched interrupt. */ static unsigned int mmc_status(struct device *dev) { unsigned int status = readl(0xfca00004); writel(8, 0xfcb00008); return status & 8; } static struct mmc_platform_data mmc_data = { .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34, .status = mmc_status, }; static struct amba_device mmc_device = { .dev = { .bus_id = "mb:1c", .platform_data = &mmc_data, }, .res = { .start = INTCP_PA_MMC_BASE, .end = INTCP_PA_MMC_BASE + SZ_4K - 1, .flags = IORESOURCE_MEM, }, .irq = { IRQ_CP_MMCIINT0, IRQ_CP_MMCIINT1 }, .periphid = 0, }; static struct amba_device aaci_device = { .dev = { .bus_id = "mb:1d", }, .res = { .start = INTCP_PA_AACI_BASE, .end = INTCP_PA_AACI_BASE + SZ_4K - 1, .flags = IORESOURCE_MEM, }, .irq = { IRQ_CP_AACIINT, NO_IRQ }, .periphid = 0, }; /* * CLCD support */ static struct clcd_panel vga = { .mode = { .name = "VGA", .refresh = 60, .xres = 640, .yres = 480, .pixclock = 39721, .left_margin = 40, .right_margin = 24, .upper_margin = 32, .lower_margin = 11, .hsync_len = 96, .vsync_len = 2, .sync = 0, .vmode = FB_VMODE_NONINTERLACED, }, .width = -1, .height = -1, .tim2 = TIM2_BCD | TIM2_IPC, .cntl = CNTL_LCDTFT | CNTL_LCDVCOMP(1), .bpp = 16, .grayscale = 0, }; /* * Ensure VGA is selected. */ static void cp_clcd_enable(struct clcd_fb *fb) { u32 val; if (fb->fb.var.bits_per_pixel <= 8) val = CM_CTRL_LCDMUXSEL_VGA_8421BPP; else if (fb->fb.var.bits_per_pixel <= 16) val = CM_CTRL_LCDMUXSEL_VGA_16BPP | CM_CTRL_LCDEN0 | CM_CTRL_LCDEN1 | CM_CTRL_STATIC1 | CM_CTRL_STATIC2; else val = 0; /* no idea for this, don't trust the docs */ cm_control(CM_CTRL_LCDMUXSEL_MASK| CM_CTRL_LCDEN0| CM_CTRL_LCDEN1| CM_CTRL_STATIC1| CM_CTRL_STATIC2| CM_CTRL_STATIC| CM_CTRL_n24BITEN, val); } static unsigned long framesize = SZ_1M; static int cp_clcd_setup(struct clcd_fb *fb) { dma_addr_t dma; fb->panel = &vga; fb->fb.screen_base = dma_alloc_writecombine(&fb->dev->dev, framesize, &dma, GFP_KERNEL); if (!fb->fb.screen_base) { printk(KERN_ERR "CLCD: unable to map framebuffer\n"); return -ENOMEM; } fb->fb.fix.smem_start = dma; fb->fb.fix.smem_len = framesize; return 0; } static int cp_clcd_mmap(struct clcd_fb *fb, struct vm_area_struct *vma) { return dma_mmap_writecombine(&fb->dev->dev, vma, fb->fb.screen_base, fb->fb.fix.smem_start, fb->fb.fix.smem_len); } static void cp_clcd_remove(struct clcd_fb *fb) { dma_free_writecombine(&fb->dev->dev, fb->fb.fix.smem_len, fb->fb.screen_base, fb->fb.fix.smem_start); } static struct clcd_board clcd_data = { .name = "Integrator/CP", .check = clcdfb_check, .decode = clcdfb_decode, .enable = cp_clcd_enable, .setup = cp_clcd_setup, .mmap = cp_clcd_mmap, .remove = cp_clcd_remove, }; static struct amba_device clcd_device = { .dev = { .bus_id = "mb:c0", .coherent_dma_mask = ~0, .platform_data = &clcd_data, }, .res = { .start = INTCP_PA_CLCD_BASE, .end = INTCP_PA_CLCD_BASE + SZ_4K - 1, .flags = IORESOURCE_MEM, }, .dma_mask = ~0, .irq = { IRQ_CP_CLCDCINT, NO_IRQ }, .periphid = 0, }; static struct amba_device *amba_devs[] __initdata = { &mmc_device, &aaci_device, &clcd_device, }; static void __init intcp_init(void) { int i; clk_register(&cp_clcd_clk); clk_register(&cp_mmci_clk); platform_add_devices(intcp_devs, ARRAY_SIZE(intcp_devs)); for (i = 0; i < ARRAY_SIZE(amba_devs); i++) { struct amba_device *d = amba_devs[i]; amba_device_register(d, &iomem_resource); } } #define TIMER_CTRL_IE (1 << 5) /* Interrupt Enable */ static void __init intcp_timer_init(void) { integrator_time_init(1000000 / HZ, TIMER_CTRL_IE); } static struct sys_timer cp_timer = { .init = intcp_timer_init, .offset = integrator_gettimeoffset, }; MACHINE_START(CINTEGRATOR, "ARM-IntegratorCP") /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */ .phys_io = 0x16000000, .io_pg_offst = ((0xf1600000) >> 18) & 0xfffc, .boot_params = 0x00000100, .map_io = intcp_map_io, .init_irq = intcp_init_irq, .timer = &cp_timer, .init_machine = intcp_init, MACHINE_END