/* * linux/arch/arm/mach-omap1/io.c * * OMAP1 I/O mapping code * * 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/module.h> #include <linux/kernel.h> #include <linux/init.h> #include <linux/io.h> #include <asm/tlb.h> #include <asm/mach/map.h> #include <mach/mux.h> #include <mach/tc.h> #include <linux/omap-dma.h> #include "iomap.h" #include "common.h" #include "clock.h" /* * The machine specific code may provide the extra mapping besides the * default mapping provided here. */ static struct map_desc omap_io_desc[] __initdata = { { .virtual = OMAP1_IO_VIRT, .pfn = __phys_to_pfn(OMAP1_IO_PHYS), .length = OMAP1_IO_SIZE, .type = MT_DEVICE } }; #if defined (CONFIG_ARCH_OMAP730) || defined (CONFIG_ARCH_OMAP850) static struct map_desc omap7xx_io_desc[] __initdata = { { .virtual = OMAP7XX_DSP_BASE, .pfn = __phys_to_pfn(OMAP7XX_DSP_START), .length = OMAP7XX_DSP_SIZE, .type = MT_DEVICE }, { .virtual = OMAP7XX_DSPREG_BASE, .pfn = __phys_to_pfn(OMAP7XX_DSPREG_START), .length = OMAP7XX_DSPREG_SIZE, .type = MT_DEVICE } }; #endif #ifdef CONFIG_ARCH_OMAP15XX static struct map_desc omap1510_io_desc[] __initdata = { { .virtual = OMAP1510_DSP_BASE, .pfn = __phys_to_pfn(OMAP1510_DSP_START), .length = OMAP1510_DSP_SIZE, .type = MT_DEVICE }, { .virtual = OMAP1510_DSPREG_BASE, .pfn = __phys_to_pfn(OMAP1510_DSPREG_START), .length = OMAP1510_DSPREG_SIZE, .type = MT_DEVICE } }; #endif #if defined(CONFIG_ARCH_OMAP16XX) static struct map_desc omap16xx_io_desc[] __initdata = { { .virtual = OMAP16XX_DSP_BASE, .pfn = __phys_to_pfn(OMAP16XX_DSP_START), .length = OMAP16XX_DSP_SIZE, .type = MT_DEVICE }, { .virtual = OMAP16XX_DSPREG_BASE, .pfn = __phys_to_pfn(OMAP16XX_DSPREG_START), .length = OMAP16XX_DSPREG_SIZE, .type = MT_DEVICE } }; #endif /* * Maps common IO regions for omap1 */ static void __init omap1_map_common_io(void) { iotable_init(omap_io_desc, ARRAY_SIZE(omap_io_desc)); } #if defined (CONFIG_ARCH_OMAP730) || defined (CONFIG_ARCH_OMAP850) void __init omap7xx_map_io(void) { omap1_map_common_io(); iotable_init(omap7xx_io_desc, ARRAY_SIZE(omap7xx_io_desc)); } #endif #ifdef CONFIG_ARCH_OMAP15XX void __init omap15xx_map_io(void) { omap1_map_common_io(); iotable_init(omap1510_io_desc, ARRAY_SIZE(omap1510_io_desc)); } #endif #if defined(CONFIG_ARCH_OMAP16XX) void __init omap16xx_map_io(void) { omap1_map_common_io(); iotable_init(omap16xx_io_desc, ARRAY_SIZE(omap16xx_io_desc)); } #endif /* * Common low-level hardware init for omap1. */ void __init omap1_init_early(void) { omap_check_revision(); /* REVISIT: Refer to OMAP5910 Errata, Advisory SYS_1: "Timeout Abort * on a Posted Write in the TIPB Bridge". */ omap_writew(0x0, MPU_PUBLIC_TIPB_CNTL); omap_writew(0x0, MPU_PRIVATE_TIPB_CNTL); /* Must init clocks early to assure that timer interrupt works */ omap1_clk_init(); omap1_mux_init(); } void __init omap1_init_late(void) { omap_serial_wakeup_init(); } /* * NOTE: Please use ioremap + __raw_read/write where possible instead of these */ u8 omap_readb(u32 pa) { return __raw_readb(OMAP1_IO_ADDRESS(pa)); } EXPORT_SYMBOL(omap_readb); u16 omap_readw(u32 pa) { return __raw_readw(OMAP1_IO_ADDRESS(pa)); } EXPORT_SYMBOL(omap_readw); u32 omap_readl(u32 pa) { return __raw_readl(OMAP1_IO_ADDRESS(pa)); } EXPORT_SYMBOL(omap_readl); void omap_writeb(u8 v, u32 pa) { __raw_writeb(v, OMAP1_IO_ADDRESS(pa)); } EXPORT_SYMBOL(omap_writeb); void omap_writew(u16 v, u32 pa) { __raw_writew(v, OMAP1_IO_ADDRESS(pa)); } EXPORT_SYMBOL(omap_writew); void omap_writel(u32 v, u32 pa) { __raw_writel(v, OMAP1_IO_ADDRESS(pa)); } EXPORT_SYMBOL(omap_writel);