From c9d6c1a2379373219bb3271bdcbdc0ab2edf349d Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Wed, 16 Jul 2008 20:33:39 +0200 Subject: 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 Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide-timings.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) (limited to 'drivers/ide/ide-timings.c') 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) -- cgit v1.2.3-59-g8ed1b