| /* |
| * 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 <plat/mux.h> |
| #include <plat/tc.h> |
| |
| #include "clock.h" |
| |
| extern void omap_check_revision(void); |
| |
| /* |
| * 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 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(); |
| } |
| |
| /* |
| * 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); |