[PATCH] ARM: 2801/1: OMAP update 6/11: Split OMAP1 common code into id, io and serial

Patch from Tony Lindgren

This patch by Juha Yrjölä and other OMAP developers splits
OMAP1 specific common code into OMAP1 id, io, and serial
code in mach-omap1 directory.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 116 insertions, 0 deletions

diff --git a/arch/arm/mach-omap1/io.c b/arch/arm/mach-omap1/io.c
new file mode 100644
index 000000000000..8587b339884f
--- /dev/null
+++ b/arch/arm/mach-omap1/io.c
@@ -0,0 +1,116 @@
+/*
+ * 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/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+
+#include <asm/mach/map.h>
+#include <asm/io.h>
+#include <asm/arch/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 = {
+ { IO_VIRT,             IO_PHYS,             IO_SIZE,              MT_DEVICE },
+};
+
+#ifdef CONFIG_ARCH_OMAP730
+static struct map_desc omap730_io_desc[] __initdata = {
+ { OMAP730_DSP_BASE,    OMAP730_DSP_START,    OMAP730_DSP_SIZE,    MT_DEVICE },
+ { OMAP730_DSPREG_BASE, OMAP730_DSPREG_START, OMAP730_DSPREG_SIZE, MT_DEVICE },
+ { OMAP730_SRAM_BASE,   OMAP730_SRAM_START,   OMAP730_SRAM_SIZE,   MT_DEVICE }
+};
+#endif
+
+#ifdef CONFIG_ARCH_OMAP1510
+static struct map_desc omap1510_io_desc[] __initdata = {
+ { OMAP1510_DSP_BASE,    OMAP1510_DSP_START,    OMAP1510_DSP_SIZE,    MT_DEVICE },
+ { OMAP1510_DSPREG_BASE, OMAP1510_DSPREG_START, OMAP1510_DSPREG_SIZE, MT_DEVICE },
+ { OMAP1510_SRAM_BASE,   OMAP1510_SRAM_START,   OMAP1510_SRAM_SIZE,   MT_DEVICE }
+};
+#endif
+
+#if defined(CONFIG_ARCH_OMAP16XX)
+static struct map_desc omap1610_io_desc[] __initdata = {
+ { OMAP16XX_DSP_BASE,    OMAP16XX_DSP_START,    OMAP16XX_DSP_SIZE,    MT_DEVICE },
+ { OMAP16XX_DSPREG_BASE, OMAP16XX_DSPREG_START, OMAP16XX_DSPREG_SIZE, MT_DEVICE },
+ { OMAP16XX_SRAM_BASE,   OMAP16XX_SRAM_START,   OMAP1610_SRAM_SIZE,   MT_DEVICE }
+};
+
+static struct map_desc omap5912_io_desc[] __initdata = {
+ { OMAP16XX_DSP_BASE,    OMAP16XX_DSP_START,    OMAP16XX_DSP_SIZE,    MT_DEVICE },
+ { OMAP16XX_DSPREG_BASE, OMAP16XX_DSPREG_START, OMAP16XX_DSPREG_SIZE, MT_DEVICE },
+/*
+ * The OMAP5912 has 250kByte internal SRAM. Because the mapping is baseed on page
+ * size (4kByte), it seems that the last 2kByte (=0x800) of the 250kByte are not mapped.
+ * Add additional 2kByte (0x800) so that the last page is mapped and the last 2kByte
+ * can be used.
+ */
+ { OMAP16XX_SRAM_BASE,   OMAP16XX_SRAM_START,   OMAP5912_SRAM_SIZE + 0x800,   MT_DEVICE }
+};
+#endif
+
+static int initialized = 0;
+
+static void __init _omap_map_io(void)
+{
+        initialized = 1;
+
+        /* We have to initialize the IO space mapping before we can run
+         * cpu_is_omapxxx() macros. */
+        iotable_init(omap_io_desc, ARRAY_SIZE(omap_io_desc));
+        omap_check_revision();
+
+#ifdef CONFIG_ARCH_OMAP730
+        if (cpu_is_omap730()) {
+                iotable_init(omap730_io_desc, ARRAY_SIZE(omap730_io_desc));
+        }
+#endif
+#ifdef CONFIG_ARCH_OMAP1510
+        if (cpu_is_omap1510()) {
+                iotable_init(omap1510_io_desc, ARRAY_SIZE(omap1510_io_desc));
+        }
+#endif
+#if defined(CONFIG_ARCH_OMAP16XX)
+        if (cpu_is_omap1610() || cpu_is_omap1710()) {
+                iotable_init(omap1610_io_desc, ARRAY_SIZE(omap1610_io_desc));
+        }
+        if (cpu_is_omap5912()) {
+                iotable_init(omap5912_io_desc, ARRAY_SIZE(omap5912_io_desc));
+        }
+#endif
+
+        /* 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
+         */
+        clk_init();
+}
+
+/*
+ * This should only get called from board specific init
+ */
+void omap_map_common_io(void)
+{
+        if (!initialized)
+                _omap_map_io();
+}