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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:02:30 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:02:30 +0000
commit76cb841cb886eef6b3bee341a2266c76578724ad (patch)
treef5892e5ba6cc11949952a6ce4ecbe6d516d6ce58 /arch/arm/mach-omap1/io.c
parentInitial commit. (diff)
downloadlinux-76cb841cb886eef6b3bee341a2266c76578724ad.tar.xz
linux-76cb841cb886eef6b3bee341a2266c76578724ad.zip
Adding upstream version 4.19.249.upstream/4.19.249
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.c182
1 files changed, 182 insertions, 0 deletions
diff --git a/arch/arm/mach-omap1/io.c b/arch/arm/mach-omap1/io.c
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index 000000000..499b8accb
--- /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);