/* * linux/arch/arm/mach-versatile/core.c * * Copyright (C) 1999 - 2003 ARM Limited * Copyright (C) 2000 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, 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 #include #include #include #include #include #include "core.h" /* * All IO addresses are mapped onto VA 0xFFFx.xxxx, where x.xxxx * is the (PA >> 12). * * Setup a VA for the Versatile Vectored Interrupt Controller. */ #define VA_VIC_BASE __io_address(VERSATILE_VIC_BASE) #define VA_SIC_BASE __io_address(VERSATILE_SIC_BASE) static struct fpga_irq_data sic_irq = { .base = VA_SIC_BASE, .irq_start = IRQ_SIC_START, .chip.name = "SIC", }; #if 1 #define IRQ_MMCI0A IRQ_VICSOURCE22 #define IRQ_AACI IRQ_VICSOURCE24 #define IRQ_ETH IRQ_VICSOURCE25 #define PIC_MASK 0xFFD00000 #else #define IRQ_MMCI0A IRQ_SIC_MMCI0A #define IRQ_AACI IRQ_SIC_AACI #define IRQ_ETH IRQ_SIC_ETH #define PIC_MASK 0 #endif /* Lookup table for finding a DT node that represents the vic instance */ static const struct of_device_id vic_of_match[] __initconst = { { .compatible = "arm,versatile-vic", }, {} }; static const struct of_device_id sic_of_match[] __initconst = { { .compatible = "arm,versatile-sic", }, {} }; void __init versatile_init_irq(void) { struct device_node *np; np = of_find_matching_node_by_address(NULL, vic_of_match, VERSATILE_VIC_BASE); __vic_init(VA_VIC_BASE, IRQ_VIC_START, ~0, 0, np); writel(~0, VA_SIC_BASE + SIC_IRQ_ENABLE_CLEAR); fpga_irq_init(IRQ_VICSOURCE31, ~PIC_MASK, &sic_irq); irq_domain_generate_simple(sic_of_match, VERSATILE_SIC_BASE, IRQ_SIC_START); /* * Interrupts on secondary controller from 0 to 8 are routed to * source 31 on PIC. * Interrupts from 21 to 31 are routed directly to the VIC on * the corresponding number on primary controller. This is controlled * by setting PIC_ENABLEx. */ writel(PIC_MASK, VA_SIC_BASE + SIC_INT_PIC_ENABLE); } static struct map_desc versatile_io_desc[] __initdata = { { .virtual = IO_ADDRESS(VERSATILE_SYS_BASE), .pfn = __phys_to_pfn(VERSATILE_SYS_BASE), .length = SZ_4K, .type = MT_DEVICE }, { .virtual = IO_ADDRESS(VERSATILE_SIC_BASE), .pfn = __phys_to_pfn(VERSATILE_SIC_BASE), .length = SZ_4K, .type = MT_DEVICE }, { .virtual = IO_ADDRESS(VERSATILE_VIC_BASE), .pfn = __phys_to_pfn(VERSATILE_VIC_BASE), .length = SZ_4K, .type = MT_DEVICE }, { .virtual = IO_ADDRESS(VERSATILE_SCTL_BASE), .pfn = __phys_to_pfn(VERSATILE_SCTL_BASE), .length = SZ_4K * 9, .type = MT_DEVICE }, #ifdef CONFIG_MACH_VERSATILE_AB { .virtual = IO_ADDRESS(VERSATILE_IB2_BASE), .pfn = __phys_to_pfn(VERSATILE_IB2_BASE), .length = SZ_64M, .type = MT_DEVICE }, #endif #ifdef CONFIG_DEBUG_LL { .virtual = IO_ADDRESS(VERSATILE_UART0_BASE), .pfn = __phys_to_pfn(VERSATILE_UART0_BASE), .length = SZ_4K, .type = MT_DEVICE }, #endif #ifdef CONFIG_PCI { .virtual = IO_ADDRESS(VERSATILE_PCI_CORE_BASE), .pfn = __phys_to_pfn(VERSATILE_PCI_CORE_BASE), .length = SZ_4K, .type = MT_DEVICE }, { .virtual = (unsigned long)VERSATILE_PCI_VIRT_BASE, .pfn = __phys_to_pfn(VERSATILE_PCI_BASE), .length = VERSATILE_PCI_BASE_SIZE, .type = MT_DEVICE }, { .virtual = (unsigned long)VERSATILE_PCI_CFG_VIRT_BASE, .pfn = __phys_to_pfn(VERSATILE_PCI_CFG_BASE), .length = VERSATILE_PCI_CFG_BASE_SIZE, .type = MT_DEVICE }, #if 0 { .virtual = VERSATILE_PCI_VIRT_MEM_BASE0, .pfn = __phys_to_pfn(VERSATILE_PCI_MEM_BASE0), .length = SZ_16M, .type = MT_DEVICE }, { .virtual = VERSATILE_PCI_VIRT_MEM_BASE1, .pfn = __phys_to_pfn(VERSATILE_PCI_MEM_BASE1), .length = SZ_16M, .type = MT_DEVICE }, { .virtual = VERSATILE_PCI_VIRT_MEM_BASE2, .pfn = __phys_to_pfn(VERSATILE_PCI_MEM_BASE2), .length = SZ_16M, .type = MT_DEVICE }, #endif #endif }; void __init versatile_map_io(void) { iotable_init(versatile_io_desc, ARRAY_SIZE(versatile_io_desc)); } #define VERSATILE_FLASHCTRL (__io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_FLASH_OFFSET) static void versatile_flash_set_vpp(struct platform_device *pdev, int on) { u32 val; val = __raw_readl(VERSATILE_FLASHCTRL); if (on) val |= VERSATILE_FLASHPROG_FLVPPEN; else val &= ~VERSATILE_FLASHPROG_FLVPPEN; __raw_writel(val, VERSATILE_FLASHCTRL); } static struct physmap_flash_data versatile_flash_data = { .width = 4, .set_vpp = versatile_flash_set_vpp, }; static struct resource versatile_flash_resource = { .start = VERSATILE_FLASH_BASE, .end = VERSATILE_FLASH_BASE + VERSATILE_FLASH_SIZE - 1, .flags = IORESOURCE_MEM, }; static struct platform_device versatile_flash_device = { .name = "physmap-flash", .id = 0, .dev = { .platform_data = &versatile_flash_data, }, .num_resources = 1, .resource = &versatile_flash_resource, }; static struct resource smc91x_resources[] = { [0] = { .start = VERSATILE_ETH_BASE, .end = VERSATILE_ETH_BASE + SZ_64K - 1, .flags = IORESOURCE_MEM, }, [1] = { .start = IRQ_ETH, .end = IRQ_ETH, .flags = IORESOURCE_IRQ, }, }; static struct platform_device smc91x_device = { .name = "smc91x", .id = 0, .num_resources = ARRAY_SIZE(smc91x_resources), .resource = smc91x_resources, }; static struct resource versatile_i2c_resource = { .start = VERSATILE_I2C_BASE, .end = VERSATILE_I2C_BASE + SZ_4K - 1, .flags = IORESOURCE_MEM, }; static struct platform_device versatile_i2c_device = { .name = "versatile-i2c", .id = 0, .num_resources = 1, .resource = &versatile_i2c_resource, }; static struct i2c_board_info versatile_i2c_board_info[] = { { I2C_BOARD_INFO("ds1338", 0xd0 >> 1), }, }; static int __init versatile_i2c_init(void) { return i2c_register_board_info(0, versatile_i2c_board_info, ARRAY_SIZE(versatile_i2c_board_info)); } arch_initcall(versatile_i2c_init); #define VERSATILE_SYSMCI (__io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_MCI_OFFSET) unsigned int mmc_status(struct device *dev) { struct amba_device *adev = container_of(dev, struct amba_device, dev); u32 mask; if (adev->res.start == VERSATILE_MMCI0_BASE) mask = 1; else mask = 2; return readl(VERSATILE_SYSMCI) & mask; } static struct mmci_platform_data mmc0_plat_data = { .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34, .status = mmc_status, .gpio_wp = -1, .gpio_cd = -1, }; static struct resource char_lcd_resources[] = { { .start = VERSATILE_CHAR_LCD_BASE, .end = (VERSATILE_CHAR_LCD_BASE + SZ_4K - 1), .flags = IORESOURCE_MEM, }, }; static struct platform_device char_lcd_device = { .name = "arm-charlcd", .id = -1, .num_resources = ARRAY_SIZE(char_lcd_resources), .resource = char_lcd_resources, }; /* * Clock handling */ static const struct icst_params versatile_oscvco_params = { .ref = 24000000, .vco_max = ICST307_VCO_MAX, .vco_min = ICST307_VCO_MIN, .vd_min = 4 + 8, .vd_max = 511 + 8, .rd_min = 1 + 2, .rd_max = 127 + 2, .s2div = icst307_s2div, .idx2s = icst307_idx2s, }; static void versatile_oscvco_set(struct clk *clk, struct icst_vco vco) { void __iomem *sys_lock = __io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_LOCK_OFFSET; u32 val; val = readl(clk->vcoreg) & ~0x7ffff; val |= vco.v | (vco.r << 9) | (vco.s << 16); writel(0xa05f, sys_lock); writel(val, clk->vcoreg); writel(0, sys_lock); } static const struct clk_ops osc4_clk_ops = { .round = icst_clk_round, .set = icst_clk_set, .setvco = versatile_oscvco_set, }; static struct clk osc4_clk = { .ops = &osc4_clk_ops, .params = &versatile_oscvco_params, }; /* * These are fixed clocks. */ static struct clk ref24_clk = { .rate = 24000000, }; static struct clk sp804_clk = { .rate = 1000000, }; static struct clk dummy_apb_pclk; static struct clk_lookup lookups[] = { { /* AMBA bus clock */ .con_id = "apb_pclk", .clk = &dummy_apb_pclk, }, { /* UART0 */ .dev_id = "dev:f1", .clk = &ref24_clk, }, { /* UART1 */ .dev_id = "dev:f2", .clk = &ref24_clk, }, { /* UART2 */ .dev_id = "dev:f3", .clk = &ref24_clk, }, { /* UART3 */ .dev_id = "fpga:09", .clk = &ref24_clk, }, { /* KMI0 */ .dev_id = "fpga:06", .clk = &ref24_clk, }, { /* KMI1 */ .dev_id = "fpga:07", .clk = &ref24_clk, }, { /* MMC0 */ .dev_id = "fpga:05", .clk = &ref24_clk, }, { /* MMC1 */ .dev_id = "fpga:0b", .clk = &ref24_clk, }, { /* SSP */ .dev_id = "dev:f4", .clk = &ref24_clk, }, { /* CLCD */ .dev_id = "dev:20", .clk = &osc4_clk, }, { /* SP804 timers */ .dev_id = "sp804", .clk = &sp804_clk, }, }; /* * CLCD support. */ #define SYS_CLCD_MODE_MASK (3 << 0) #define SYS_CLCD_MODE_888 (0 << 0) #define SYS_CLCD_MODE_5551 (1 << 0) #define SYS_CLCD_MODE_565_RLSB (2 << 0) #define SYS_CLCD_MODE_565_BLSB (3 << 0) #define SYS_CLCD_NLCDIOON (1 << 2) #define SYS_CLCD_VDDPOSSWITCH (1 << 3) #define SYS_CLCD_PWR3V5SWITCH (1 << 4) #define SYS_CLCD_ID_MASK (0x1f << 8) #define SYS_CLCD_ID_SANYO_3_8 (0x00 << 8) #define SYS_CLCD_ID_UNKNOWN_8_4 (0x01 << 8) #define SYS_CLCD_ID_EPSON_2_2 (0x02 << 8) #define SYS_CLCD_ID_SANYO_2_5 (0x07 << 8) #define SYS_CLCD_ID_VGA (0x1f << 8) static bool is_sanyo_2_5_lcd; /* * Disable all display connectors on the interface module. */ static void versatile_clcd_disable(struct clcd_fb *fb) { void __iomem *sys_clcd = __io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_CLCD_OFFSET; u32 val; val = readl(sys_clcd); val &= ~SYS_CLCD_NLCDIOON | SYS_CLCD_PWR3V5SWITCH; writel(val, sys_clcd); #ifdef CONFIG_MACH_VERSATILE_AB /* * If the LCD is Sanyo 2x5 in on the IB2 board, turn the back-light off */ if (machine_is_versatile_ab() && is_sanyo_2_5_lcd) { void __iomem *versatile_ib2_ctrl = __io_address(VERSATILE_IB2_CTRL); unsigned long ctrl; ctrl = readl(versatile_ib2_ctrl); ctrl &= ~0x01; writel(ctrl, versatile_ib2_ctrl); } #endif } /* * Enable the relevant connector on the interface module. */ static void versatile_clcd_enable(struct clcd_fb *fb) { struct fb_var_screeninfo *var = &fb->fb.var; void __iomem *sys_clcd = __io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_CLCD_OFFSET; u32 val; val = readl(sys_clcd); val &= ~SYS_CLCD_MODE_MASK; switch (var->green.length) { case 5: val |= SYS_CLCD_MODE_5551; break; case 6: if (var->red.offset == 0) val |= SYS_CLCD_MODE_565_RLSB; else val |= SYS_CLCD_MODE_565_BLSB; break; case 8: val |= SYS_CLCD_MODE_888; break; } /* * Set the MUX */ writel(val, sys_clcd); /* * And now enable the PSUs */ val |= SYS_CLCD_NLCDIOON | SYS_CLCD_PWR3V5SWITCH; writel(val, sys_clcd); #ifdef CONFIG_MACH_VERSATILE_AB /* * If the LCD is Sanyo 2x5 in on the IB2 board, turn the back-light on */ if (machine_is_versatile_ab() && is_sanyo_2_5_lcd) { void __iomem *versatile_ib2_ctrl = __io_address(VERSATILE_IB2_CTRL); unsigned long ctrl; ctrl = readl(versatile_ib2_ctrl); ctrl |= 0x01; writel(ctrl, versatile_ib2_ctrl); } #endif } /* * Detect which LCD panel is connected, and return the appropriate * clcd_panel structure. Note: we do not have any information on * the required timings for the 8.4in panel, so we presently assume * VGA timings. */ static int versatile_clcd_setup(struct clcd_fb *fb) { void __iomem *sys_clcd = __io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_CLCD_OFFSET; const char *panel_name; u32 val; is_sanyo_2_5_lcd = false; val = readl(sys_clcd) & SYS_CLCD_ID_MASK; if (val == SYS_CLCD_ID_SANYO_3_8) panel_name = "Sanyo TM38QV67A02A"; else if (val == SYS_CLCD_ID_SANYO_2_5) { panel_name = "Sanyo QVGA Portrait"; is_sanyo_2_5_lcd = true; } else if (val == SYS_CLCD_ID_EPSON_2_2) panel_name = "Epson L2F50113T00"; else if (val == SYS_CLCD_ID_VGA) panel_name = "VGA"; else { printk(KERN_ERR "CLCD: unknown LCD panel ID 0x%08x, using VGA\n", val); panel_name = "VGA"; } fb->panel = versatile_clcd_get_panel(panel_name); if (!fb->panel) return -EINVAL; return versatile_clcd_setup_dma(fb, SZ_1M); } static void versatile_clcd_decode(struct clcd_fb *fb, struct clcd_regs *regs) { clcdfb_decode(fb, regs); /* Always clear BGR for RGB565: we do the routing externally */ if (fb->fb.var.green.length == 6) regs->cntl &= ~CNTL_BGR; } static struct clcd_board clcd_plat_data = { .name = "Versatile", .caps = CLCD_CAP_5551 | CLCD_CAP_565 | CLCD_CAP_888, .check = clcdfb_check, .decode = versatile_clcd_decode, .disable = versatile_clcd_disable, .enable = versatile_clcd_enable, .setup = versatile_clcd_setup, .mmap = versatile_clcd_mmap_dma, .remove = versatile_clcd_remove_dma, }; static struct pl061_platform_data gpio0_plat_data = { .gpio_base = 0, .irq_base = IRQ_GPIO0_START, }; static struct pl061_platform_data gpio1_plat_data = { .gpio_base = 8, .irq_base = IRQ_GPIO1_START, }; static struct pl022_ssp_controller ssp0_plat_data = { .bus_id = 0, .enable_dma = 0, .num_chipselect = 1, }; #define AACI_IRQ { IRQ_AACI } #define MMCI0_IRQ { IRQ_MMCI0A,IRQ_SIC_MMCI0B } #define KMI0_IRQ { IRQ_SIC_KMI0 } #define KMI1_IRQ { IRQ_SIC_KMI1 } /* * These devices are connected directly to the multi-layer AHB switch */ #define SMC_IRQ { } #define MPMC_IRQ { } #define CLCD_IRQ { IRQ_CLCDINT } #define DMAC_IRQ { IRQ_DMAINT } /* * These devices are connected via the core APB bridge */ #define SCTL_IRQ { } #define WATCHDOG_IRQ { IRQ_WDOGINT } #define GPIO0_IRQ { IRQ_GPIOINT0 } #define GPIO1_IRQ { IRQ_GPIOINT1 } #define RTC_IRQ { IRQ_RTCINT } /* * These devices are connected via the DMA APB bridge */ #define SCI_IRQ { IRQ_SCIINT } #define UART0_IRQ { IRQ_UARTINT0 } #define UART1_IRQ { IRQ_UARTINT1 } #define UART2_IRQ { IRQ_UARTINT2 } #define SSP_IRQ { IRQ_SSPINT } /* FPGA Primecells */ APB_DEVICE(aaci, "fpga:04", AACI, NULL); APB_DEVICE(mmc0, "fpga:05", MMCI0, &mmc0_plat_data); APB_DEVICE(kmi0, "fpga:06", KMI0, NULL); APB_DEVICE(kmi1, "fpga:07", KMI1, NULL); /* DevChip Primecells */ AHB_DEVICE(smc, "dev:00", SMC, NULL); AHB_DEVICE(mpmc, "dev:10", MPMC, NULL); AHB_DEVICE(clcd, "dev:20", CLCD, &clcd_plat_data); AHB_DEVICE(dmac, "dev:30", DMAC, NULL); APB_DEVICE(sctl, "dev:e0", SCTL, NULL); APB_DEVICE(wdog, "dev:e1", WATCHDOG, NULL); APB_DEVICE(gpio0, "dev:e4", GPIO0, &gpio0_plat_data); APB_DEVICE(gpio1, "dev:e5", GPIO1, &gpio1_plat_data); APB_DEVICE(rtc, "dev:e8", RTC, NULL); APB_DEVICE(sci0, "dev:f0", SCI, NULL); APB_DEVICE(uart0, "dev:f1", UART0, NULL); APB_DEVICE(uart1, "dev:f2", UART1, NULL); APB_DEVICE(uart2, "dev:f3", UART2, NULL); APB_DEVICE(ssp0, "dev:f4", SSP, &ssp0_plat_data); static struct amba_device *amba_devs[] __initdata = { &dmac_device, &uart0_device, &uart1_device, &uart2_device, &smc_device, &mpmc_device, &clcd_device, &sctl_device, &wdog_device, &gpio0_device, &gpio1_device, &rtc_device, &sci0_device, &ssp0_device, &aaci_device, &mmc0_device, &kmi0_device, &kmi1_device, }; #ifdef CONFIG_OF /* * Lookup table for attaching a specific name and platform_data pointer to * devices as they get created by of_platform_populate(). Ideally this table * would not exist, but the current clock implementation depends on some devices * having a specific name. */ struct of_dev_auxdata versatile_auxdata_lookup[] __initdata = { OF_DEV_AUXDATA("arm,primecell", VERSATILE_MMCI0_BASE, "fpga:05", NULL), OF_DEV_AUXDATA("arm,primecell", VERSATILE_KMI0_BASE, "fpga:06", NULL), OF_DEV_AUXDATA("arm,primecell", VERSATILE_KMI1_BASE, "fpga:07", NULL), OF_DEV_AUXDATA("arm,primecell", VERSATILE_UART3_BASE, "fpga:09", NULL), OF_DEV_AUXDATA("arm,primecell", VERSATILE_MMCI1_BASE, "fpga:0b", NULL), OF_DEV_AUXDATA("arm,primecell", VERSATILE_CLCD_BASE, "dev:20", &clcd_plat_data), OF_DEV_AUXDATA("arm,primecell", VERSATILE_UART0_BASE, "dev:f1", NULL), OF_DEV_AUXDATA("arm,primecell", VERSATILE_UART1_BASE, "dev:f2", NULL), OF_DEV_AUXDATA("arm,primecell", VERSATILE_UART2_BASE, "dev:f3", NULL), OF_DEV_AUXDATA("arm,primecell", VERSATILE_SSP_BASE, "dev:f4", NULL), #if 0 /* * These entries are unnecessary because no clocks referencing * them. I've left them in for now as place holders in case * any of them need to be added back, but they should be * removed before actually committing this patch. --gcl */ OF_DEV_AUXDATA("arm,primecell", VERSATILE_AACI_BASE, "fpga:04", NULL), OF_DEV_AUXDATA("arm,primecell", VERSATILE_SCI1_BASE, "fpga:0a", NULL), OF_DEV_AUXDATA("arm,primecell", VERSATILE_SMC_BASE, "dev:00", NULL), OF_DEV_AUXDATA("arm,primecell", VERSATILE_MPMC_BASE, "dev:10", NULL), OF_DEV_AUXDATA("arm,primecell", VERSATILE_DMAC_BASE, "dev:30", NULL), OF_DEV_AUXDATA("arm,primecell", VERSATILE_SCTL_BASE, "dev:e0", NULL), OF_DEV_AUXDATA("arm,primecell", VERSATILE_WATCHDOG_BASE, "dev:e1", NULL), OF_DEV_AUXDATA("arm,primecell", VERSATILE_GPIO0_BASE, "dev:e4", NULL), OF_DEV_AUXDATA("arm,primecell", VERSATILE_GPIO1_BASE, "dev:e5", NULL), OF_DEV_AUXDATA("arm,primecell", VERSATILE_GPIO2_BASE, "dev:e6", NULL), OF_DEV_AUXDATA("arm,primecell", VERSATILE_GPIO3_BASE, "dev:e7", NULL), OF_DEV_AUXDATA("arm,primecell", VERSATILE_RTC_BASE, "dev:e8", NULL), OF_DEV_AUXDATA("arm,primecell", VERSATILE_SCI_BASE, "dev:f0", NULL), #endif {} }; #endif #ifdef CONFIG_LEDS #define VA_LEDS_BASE (__io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_LED_OFFSET) static void versatile_leds_event(led_event_t ledevt) { unsigned long flags; u32 val; local_irq_save(flags); val = readl(VA_LEDS_BASE); switch (ledevt) { case led_idle_start: val = val & ~VERSATILE_SYS_LED0; break; case led_idle_end: val = val | VERSATILE_SYS_LED0; break; case led_timer: val = val ^ VERSATILE_SYS_LED1; break; case led_halted: val = 0; break; default: break; } writel(val, VA_LEDS_BASE); local_irq_restore(flags); } #endif /* CONFIG_LEDS */ void versatile_restart(char mode, const char *cmd) { void __iomem *sys = __io_address(VERSATILE_SYS_BASE); u32 val; val = __raw_readl(sys + VERSATILE_SYS_RESETCTL_OFFSET); val |= 0x105; __raw_writel(0xa05f, sys + VERSATILE_SYS_LOCK_OFFSET); __raw_writel(val, sys + VERSATILE_SYS_RESETCTL_OFFSET); __raw_writel(0, sys + VERSATILE_SYS_LOCK_OFFSET); } /* Early initializations */ void __init versatile_init_early(void) { void __iomem *sys = __io_address(VERSATILE_SYS_BASE); osc4_clk.vcoreg = sys + VERSATILE_SYS_OSCCLCD_OFFSET; clkdev_add_table(lookups, ARRAY_SIZE(lookups)); versatile_sched_clock_init(sys + VERSATILE_SYS_24MHz_OFFSET, 24000000); } void __init versatile_init(void) { int i; platform_device_register(&versatile_flash_device); platform_device_register(&versatile_i2c_device); platform_device_register(&smc91x_device); platform_device_register(&char_lcd_device); for (i = 0; i < ARRAY_SIZE(amba_devs); i++) { struct amba_device *d = amba_devs[i]; amba_device_register(d, &iomem_resource); } #ifdef CONFIG_LEDS leds_event = versatile_leds_event; #endif } /* * Where is the timer (VA)? */ #define TIMER0_VA_BASE __io_address(VERSATILE_TIMER0_1_BASE) #define TIMER1_VA_BASE (__io_address(VERSATILE_TIMER0_1_BASE) + 0x20) #define TIMER2_VA_BASE __io_address(VERSATILE_TIMER2_3_BASE) #define TIMER3_VA_BASE (__io_address(VERSATILE_TIMER2_3_BASE) + 0x20) /* * Set up timer interrupt, and return the current time in seconds. */ static void __init versatile_timer_init(void) { u32 val; /* * set clock frequency: * VERSATILE_REFCLK is 32KHz * VERSATILE_TIMCLK is 1MHz */ val = readl(__io_address(VERSATILE_SCTL_BASE)); writel((VERSATILE_TIMCLK << VERSATILE_TIMER1_EnSel) | (VERSATILE_TIMCLK << VERSATILE_TIMER2_EnSel) | (VERSATILE_TIMCLK << VERSATILE_TIMER3_EnSel) | (VERSATILE_TIMCLK << VERSATILE_TIMER4_EnSel) | val, __io_address(VERSATILE_SCTL_BASE)); /* * Initialise to a known state (all timers off) */ writel(0, TIMER0_VA_BASE + TIMER_CTRL); writel(0, TIMER1_VA_BASE + TIMER_CTRL); writel(0, TIMER2_VA_BASE + TIMER_CTRL); writel(0, TIMER3_VA_BASE + TIMER_CTRL); sp804_clocksource_init(TIMER3_VA_BASE, "timer3"); sp804_clockevents_init(TIMER0_VA_BASE, IRQ_TIMERINT0_1, "timer0"); } struct sys_timer versatile_timer = { .init = versatile_timer_init, };