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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /arch/arm/mach-omap1/io.c | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/arm/mach-omap1/io.c')
-rw-r--r-- | arch/arm/mach-omap1/io.c | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/arch/arm/mach-omap1/io.c b/arch/arm/mach-omap1/io.c new file mode 100644 index 000000000..0074b011a --- /dev/null +++ b/arch/arm/mach-omap1/io.c @@ -0,0 +1,169 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * linux/arch/arm/mach-omap1/io.c + * + * OMAP1 I/O mapping code + */ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/io.h> +#include <linux/omap-dma.h> + +#include <asm/tlb.h> +#include <asm/mach/map.h> + +#include "tc.h" +#include "iomap.h" +#include "common.h" + +/* + * The machine specific code may provide the extra mapping besides the + * default mapping provided here. + */ +#if defined (CONFIG_ARCH_OMAP730) || defined (CONFIG_ARCH_OMAP850) +static struct map_desc omap7xx_io_desc[] __initdata = { + { + .virtual = OMAP1_IO_VIRT, + .pfn = __phys_to_pfn(OMAP1_IO_PHYS), + .length = OMAP1_IO_SIZE, + .type = MT_DEVICE + }, + { + .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 = OMAP1_IO_VIRT, + .pfn = __phys_to_pfn(OMAP1_IO_PHYS), + .length = OMAP1_IO_SIZE, + .type = MT_DEVICE + }, + { + .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 = OMAP1_IO_VIRT, + .pfn = __phys_to_pfn(OMAP1_IO_PHYS), + .length = OMAP1_IO_SIZE, + .type = MT_DEVICE + }, + { + .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 + +#if defined (CONFIG_ARCH_OMAP730) || defined (CONFIG_ARCH_OMAP850) +void __init omap7xx_map_io(void) +{ + iotable_init(omap7xx_io_desc, ARRAY_SIZE(omap7xx_io_desc)); +} +#endif + +#ifdef CONFIG_ARCH_OMAP15XX +void __init omap15xx_map_io(void) +{ + iotable_init(omap1510_io_desc, ARRAY_SIZE(omap1510_io_desc)); +} +#endif + +#if defined(CONFIG_ARCH_OMAP16XX) +void __init omap16xx_map_io(void) +{ + 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); +} + +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); |