File-copy from v4.4.100
This is the result of 'cp' from a linux-stable tree with the 'v4.4.100'
tag checked out (commit 26d6298789e695c9f627ce49a7bbd2286405798a) on
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Please refer to that tree for all history prior to this point.
Change-Id: I8a9ee2aea93cd29c52c847d0ce33091a73ae6afe
diff --git a/arch/arm/mach-omap1/io.c b/arch/arm/mach-omap1/io.c
new file mode 100644
index 0000000..499b8ac
--- /dev/null
+++ b/arch/arm/mach-omap1/io.c
@@ -0,0 +1,182 @@
+/*
+ * 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);