ide: move ide_pio_cycle_time() to ide-timings.c

All ide_pio_cycle_time() users already select CONFIG_IDE_TIMINGS
so move the function from ide-lib.c to ide-timings.c.

While at it:

- convert ide_pio_cycle_time() to use ide_timing_find_mode()

- cleanup ide_pio_cycle_time() a bit

There should be no functional changes caused by this patch.

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

3 files changed, 23 insertions, 24 deletions

diff --git a/drivers/ide/ide-lib.c b/drivers/ide/ide-lib.c
index 7e053d217732..efa5bfa64d01 100644
--- a/drivers/ide/ide-lib.c
+++ b/drivers/ide/ide-lib.c
@@ -188,29 +188,6 @@ static int ide_scan_pio_blacklist (char *model)
         return -1;
 }
 
-unsigned int ide_pio_cycle_time(ide_drive_t *drive, u8 pio)
-{
-        struct hd_driveid *id = drive->id;
-        int cycle_time = 0;
-
-        if (id->field_valid & 2) {
-                if (id->capability & 8)
-                        cycle_time = id->eide_pio_iordy;
-                else
-                        cycle_time = id->eide_pio;
-        }
-
-        /* conservative "downgrade" for all pre-ATA2 drives */
-        if (pio < 3) {
-                if (cycle_time && cycle_time < ide_pio_timings[pio].cycle_time)
-                        cycle_time = 0; /* use standard timing */
-        }
-
-        return cycle_time ? cycle_time : ide_pio_timings[pio].cycle_time;
-}
-
-EXPORT_SYMBOL_GPL(ide_pio_cycle_time);
-
 /**
  *      ide_get_best_pio_mode   -       get PIO mode from drive
  *      @drive: drive to consider
diff --git a/drivers/ide/ide-timings.c b/drivers/ide/ide-timings.c
index ebef6d4e3f63..8c2f8327f487 100644
--- a/drivers/ide/ide-timings.c
+++ b/drivers/ide/ide-timings.c
@@ -1,5 +1,6 @@
 /*
  *  Copyright (c) 1999-2001 Vojtech Pavlik
+ *  Copyright (c) 2007-2008 Bartlomiej Zolnierkiewicz
  *
  * 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
@@ -75,6 +76,27 @@ struct ide_timing *ide_timing_find_mode(u8 speed)
 }
 EXPORT_SYMBOL_GPL(ide_timing_find_mode);
 
+u16 ide_pio_cycle_time(ide_drive_t *drive, u8 pio)
+{
+        struct hd_driveid *id = drive->id;
+        struct ide_timing *t = ide_timing_find_mode(XFER_PIO_0 + pio);
+        u16 cycle = 0;
+
+        if (id->field_valid & 2) {
+                if (id->capability & 8)
+                        cycle = id->eide_pio_iordy;
+                else
+                        cycle = id->eide_pio;
+
+                /* conservative "downgrade" for all pre-ATA2 drives */
+                if (pio < 3 && cycle < t->cycle)
+                        cycle = 0; /* use standard timing */
+        }
+
+        return cycle ? cycle : t->cycle;
+}
+EXPORT_SYMBOL_GPL(ide_pio_cycle_time);
+
 #define ENOUGH(v, unit)         (((v) - 1) / (unit) + 1)
 #define EZ(v, unit)             ((v) ? ENOUGH(v, unit) : 0)
 
diff --git a/include/linux/ide.h b/include/linux/ide.h
index 057001f6b1dc..3899c761b302 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -1300,6 +1300,7 @@ enum {
 };
 
 struct ide_timing *ide_timing_find_mode(u8);
+u16 ide_pio_cycle_time(ide_drive_t *, u8);
 void ide_timing_merge(struct ide_timing *, struct ide_timing *,
                       struct ide_timing *, unsigned int);
 int ide_timing_compute(ide_drive_t *, u8, struct ide_timing *, int, int);
@@ -1311,7 +1312,6 @@ typedef struct ide_pio_timings_s {
                                 /* active + recovery (+ setup for some chips) */
 } ide_pio_timings_t;
 
-unsigned int ide_pio_cycle_time(ide_drive_t *, u8);
 u8 ide_get_best_pio_mode(ide_drive_t *, u8, u8);
 extern const ide_pio_timings_t ide_pio_timings[6];