powerpc/mpc5200: Document and tidy irq driver

This patch adds documentation to the mpc5200 interrupt controller
driver and cleans up some minor coding conventions.  It also moves the
contents of mpc52xx_pic.h into the driver proper (except for a small
common bit that is moved to the common mpc52xx.h) because the
information encoded there is not required by any other part of kernel
code.  Finally for code readability sake, the L2_OFFSET shift value
is removed because the code using it resolves to a noop.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

arch/powerpc/include/asm/mpc52xx.h

@@ -239,6 +239,25 @@ struct mpc52xx_cdm {
 	u16 mclken_div_psc6;	/* CDM + 0x36  reg13 byte2,3 */
 };
 
+/* Interrupt controller Register set */
+struct mpc52xx_intr {
+	u32 per_mask;		/* INTR + 0x00 */
+	u32 per_pri1;		/* INTR + 0x04 */
+	u32 per_pri2;		/* INTR + 0x08 */
+	u32 per_pri3;		/* INTR + 0x0c */
+	u32 ctrl;		/* INTR + 0x10 */
+	u32 main_mask;		/* INTR + 0x14 */
+	u32 main_pri1;		/* INTR + 0x18 */
+	u32 main_pri2;		/* INTR + 0x1c */
+	u32 reserved1;		/* INTR + 0x20 */
+	u32 enc_status;		/* INTR + 0x24 */
+	u32 crit_status;	/* INTR + 0x28 */
+	u32 main_status;	/* INTR + 0x2c */
+	u32 per_status;		/* INTR + 0x30 */
+	u32 reserved2;		/* INTR + 0x34 */
+	u32 per_error;		/* INTR + 0x38 */
+};
+
 #endif /* __ASSEMBLY__ */
 
 

arch/powerpc/platforms/52xx/lite5200_pm.c

@@ -3,7 +3,6 @@
 #include <asm/io.h>
 #include <asm/time.h>
 #include <asm/mpc52xx.h>
-#include "mpc52xx_pic.h"
 
 /* defined in lite5200_sleep.S and only used here */
 extern void lite5200_low_power(void __iomem *sram, void __iomem *mbar);

arch/powerpc/platforms/52xx/mpc52xx_pic.h

-/*
- * Header file for Freescale MPC52xx Interrupt controller
- *
- * Copyright (C) 2004-2005 Sylvain Munaut <tnt@246tNt.com>
- * Copyright (C) 2003 MontaVista, Software, Inc.
- *
- * This file is licensed under the terms of the GNU General Public License
- * version 2. This program is licensed "as is" without any warranty of any
- * kind, whether express or implied.
- */
-
-#ifndef __POWERPC_SYSDEV_MPC52xx_PIC_H__
-#define __POWERPC_SYSDEV_MPC52xx_PIC_H__
-
-#include <asm/types.h>
-
-
-/* HW IRQ mapping */
-#define MPC52xx_IRQ_L1_CRIT	(0)
-#define MPC52xx_IRQ_L1_MAIN	(1)
-#define MPC52xx_IRQ_L1_PERP	(2)
-#define MPC52xx_IRQ_L1_SDMA	(3)
-
-#define MPC52xx_IRQ_L1_OFFSET   (6)
-#define MPC52xx_IRQ_L1_MASK     (0x00c0)
-
-#define MPC52xx_IRQ_L2_OFFSET   (0)
-#define MPC52xx_IRQ_L2_MASK     (0x003f)
-
-#define MPC52xx_IRQ_HIGHTESTHWIRQ (0xd0)
-
-
-/* Interrupt controller Register set */
-struct mpc52xx_intr {
-	u32 per_mask;		/* INTR + 0x00 */
-	u32 per_pri1;		/* INTR + 0x04 */
-	u32 per_pri2;		/* INTR + 0x08 */
-	u32 per_pri3;		/* INTR + 0x0c */
-	u32 ctrl;		/* INTR + 0x10 */
-	u32 main_mask;		/* INTR + 0x14 */
-	u32 main_pri1;		/* INTR + 0x18 */
-	u32 main_pri2;		/* INTR + 0x1c */
-	u32 reserved1;		/* INTR + 0x20 */
-	u32 enc_status;		/* INTR + 0x24 */
-	u32 crit_status;	/* INTR + 0x28 */
-	u32 main_status;	/* INTR + 0x2c */
-	u32 per_status;		/* INTR + 0x30 */
-	u32 reserved2;		/* INTR + 0x34 */
-	u32 per_error;		/* INTR + 0x38 */
-};
-
-#endif /* __POWERPC_SYSDEV_MPC52xx_PIC_H__ */
-

arch/powerpc/platforms/52xx/mpc52xx_pm.c

@@ -5,9 +5,6 @@
 #include <asm/cacheflush.h>
 #include <asm/mpc52xx.h>
 
-#include "mpc52xx_pic.h"
-
-
 /* these are defined in mpc52xx_sleep.S, and only used here */
 extern void mpc52xx_deep_sleep(void __iomem *sram, void __iomem *sdram_regs,
 		struct mpc52xx_cdm __iomem *, struct mpc52xx_intr __iomem*);