P4080/eLBC: Make Freescale elbc interrupt common to elbc devices

Move Freescale elbc interrupt from nand driver to elbc driver.
Then all elbc devices can use the interrupt instead of ONLY nand.

For former nand driver, it had the two functions:

1. detecting nand flash partitions;
2. registering elbc interrupt.

Now, second function is removed to fsl_lbc.c.

Signed-off-by: Lan Chunhe-B25806 <b25806@freescale.com>
Signed-off-by: Roy Zang <tie-fei.zang@freescale.com>
Reviewed-by: Anton Vorontsov <cbouatmailru@gmail.com>
Cc: Wood Scott-B07421 <B07421@freescale.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

1 files changed, 31 insertions, 2 deletions

diff --git a/arch/powerpc/include/asm/fsl_lbc.h b/arch/powerpc/include/asm/fsl_lbc.h
index 1b5a21041f9..06a11124dde 100644
--- a/arch/powerpc/include/asm/fsl_lbc.h
+++ b/arch/powerpc/include/asm/fsl_lbc.h
@@ -1,9 +1,10 @@
 /* Freescale Local Bus Controller
  *
- * Copyright (c) 2006-2007 Freescale Semiconductor
+ * Copyright © 2006-2007, 2010 Freescale Semiconductor
  *
  * Authors: Nick Spence <nick.spence@freescale.com>,
  *          Scott Wood <scottwood@freescale.com>
+ *          Jack Lan <jack.lan@freescale.com>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -26,6 +27,8 @@
 #include <linux/compiler.h>
 #include <linux/types.h>
 #include <linux/io.h>
+#include <linux/device.h>
+#include <linux/spinlock.h>
 
 struct fsl_lbc_bank {
         __be32 br;             /**< Base Register  */
@@ -125,13 +128,23 @@ struct fsl_lbc_regs {
 #define LTESR_ATMW 0x00800000
 #define LTESR_ATMR 0x00400000
 #define LTESR_CS   0x00080000
+#define LTESR_UPM  0x00000002
 #define LTESR_CC   0x00000001
 #define LTESR_NAND_MASK (LTESR_FCT | LTESR_PAR | LTESR_CC)
+#define LTESR_MASK      (LTESR_BM | LTESR_FCT | LTESR_PAR | LTESR_WP \
+                         | LTESR_ATMW | LTESR_ATMR | LTESR_CS | LTESR_UPM \
+                         | LTESR_CC)
+#define LTESR_CLEAR     0xFFFFFFFF
+#define LTECCR_CLEAR    0xFFFFFFFF
+#define LTESR_STATUS    LTESR_MASK
+#define LTEIR_ENABLE    LTESR_MASK
+#define LTEDR_ENABLE    0x00000000
         __be32 ltedr;           /**< Transfer Error Disable Register */
         __be32 lteir;           /**< Transfer Error Interrupt Register */
         __be32 lteatr;          /**< Transfer Error Attributes Register */
         __be32 ltear;           /**< Transfer Error Address Register */
-        u8 res6[0xC];
+        __be32 lteccr;          /**< Transfer Error ECC Register */
+        u8 res6[0x8];
         __be32 lbcr;            /**< Configuration Register */
 #define LBCR_LDIS  0x80000000
 #define LBCR_LDIS_SHIFT    31
@@ -265,7 +278,23 @@ static inline void fsl_upm_end_pattern(struct fsl_upm *upm)
                 cpu_relax();
 }
 
+/* overview of the fsl lbc controller */
+
+struct fsl_lbc_ctrl {
+        /* device info */
+        struct device                   *dev;
+        struct fsl_lbc_regs __iomem     *regs;
+        int                             irq;
+        wait_queue_head_t               irq_wait;
+        spinlock_t                      lock;
+        void                            *nand;
+
+        /* status read from LTESR by irq handler */
+        unsigned int                    irq_status;
+};
+
 extern int fsl_upm_run_pattern(struct fsl_upm *upm, void __iomem *io_base,
                                u32 mar);
+extern struct fsl_lbc_ctrl *fsl_lbc_ctrl_dev;
 
 #endif /* __ASM_FSL_LBC_H */