1 files changed, 95 insertions, 0 deletions

diff --git a/include/asm-arm/arch-pxa/hardware.h b/include/asm-arm/arch-pxa/hardware.h
new file mode 100644
index 000000000000..72b04d846a23
--- /dev/null
+++ b/include/asm-arm/arch-pxa/hardware.h
@@ -0,0 +1,95 @@
+/*
+ *  linux/include/asm-arm/arch-pxa/hardware.h
+ *
+ *  Author:     Nicolas Pitre
+ *  Created:    Jun 15, 2001
+ *  Copyright:  MontaVista Software Inc.
+ *
+ * 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.
+ */
+
+#ifndef __ASM_ARCH_HARDWARE_H
+#define __ASM_ARCH_HARDWARE_H
+
+/*
+ * We requires absolute addresses.
+ */
+#define PCIO_BASE               0
+
+/*
+ * Workarounds for at least 2 errata so far require this.
+ * The mapping is set in mach-pxa/generic.c.
+ */
+#define UNCACHED_PHYS_0         0xff000000
+#define UNCACHED_ADDR           UNCACHED_PHYS_0
+
+/*
+ * Intel PXA2xx internal register mapping:
+ *
+ * 0x40000000 - 0x41ffffff <--> 0xf2000000 - 0xf3ffffff
+ * 0x44000000 - 0x45ffffff <--> 0xf4000000 - 0xf5ffffff
+ * 0x48000000 - 0x49ffffff <--> 0xf6000000 - 0xf7ffffff
+ * 0x4c000000 - 0x4dffffff <--> 0xf8000000 - 0xf9ffffff
+ * 0x50000000 - 0x51ffffff <--> 0xfa000000 - 0xfbffffff
+ * 0x54000000 - 0x55ffffff <--> 0xfc000000 - 0xfdffffff
+ * 0x58000000 - 0x59ffffff <--> 0xfe000000 - 0xffffffff
+ *
+ * Note that not all PXA2xx chips implement all those addresses, and the
+ * kernel only maps the minimum needed range of this mapping.
+ */
+#define io_p2v(x) (0xf2000000 + ((x) & 0x01ffffff) + (((x) & 0x1c000000) >> 1))
+#define io_v2p(x) (0x3c000000 + ((x) & 0x01ffffff) + (((x) & 0x0e000000) << 1))
+
+#ifndef __ASSEMBLY__
+
+#if 0
+# define __REG(x)       (*((volatile u32 *)io_p2v(x)))
+#else
+/*
+ * This __REG() version gives the same results as the one above,  except
+ * that we are fooling gcc somehow so it generates far better and smaller
+ * assembly code for access to contigous registers.  It's a shame that gcc
+ * doesn't guess this by itself.
+ */
+#include <asm/types.h>
+typedef struct { volatile u32 offset[4096]; } __regbase;
+# define __REGP(x)      ((__regbase *)((x)&~4095))->offset[((x)&4095)>>2]
+# define __REG(x)       __REGP(io_p2v(x))
+#endif
+
+/* With indexed regs we don't want to feed the index through io_p2v()
+   especially if it is a variable, otherwise horrible code will result. */
+# define __REG2(x,y)     (*(volatile u32 *)((u32)&__REG(x) + (y)))
+
+# define __PREG(x)      (io_v2p((u32)&(x)))
+
+#else
+
+# define __REG(x)       io_p2v(x)
+# define __PREG(x)      io_v2p(x)
+
+#endif
+
+#ifndef __ASSEMBLY__
+
+/*
+ * Handy routine to set GPIO alternate functions
+ */
+extern void pxa_gpio_mode( int gpio_mode );
+
+/*
+ * Routine to enable or disable CKEN
+ */
+extern void pxa_set_cken(int clock, int enable);
+
+/*
+ * return current memory and LCD clock frequency in units of 10kHz
+ */
+extern unsigned int get_memclk_frequency_10khz(void);
+extern unsigned int get_lcdclk_frequency_10khz(void);
+
+#endif
+
+#endif  /* _ASM_ARCH_HARDWARE_H */