summaryrefslogtreecommitdiffstats
path: root/drivers/ide/pci/alim15x3.c
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@woody.linux-foundation.org>2007-03-04 13:31:00 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-03-04 13:31:00 -0800
commit20b0f65d35ae45d43f363ace3744a775a752d265 (patch)
tree6085d058cb5ce12bc07368ed897c3689f5239389 /drivers/ide/pci/alim15x3.c
parent70077f2fab35ed3d73631fc47d8c572b560ecabd (diff)
parent849138827c962589ac50496fa7feeb2a2d51b467 (diff)
Merge master.kernel.org:/pub/scm/linux/kernel/git/bart/ide-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/bart/ide-2.6: ide: make legacy IDE VLB modules check for the "probe" kernel params (v2) ide: remove some obsoleted kernel params (v2) ide/pci/delkin_cb.c: pci_module_init to pci_register_driver scc_pata: bugfix for checking DMA IRQ status ide: remove a ton of pointless #undef REALLY_SLOW_IO siimage: DRAC4 note adjust legacy IDE resource setting (v2) ide: fix pmac breakage ide-cs: Update device table ide: ide_get_best_pio_mode() returns incorrect IORDY setting (take 2) piix/slc90e66: more tuneproc() fixing (take 2) ide: fix drive side 80c cable check, take 2 cmd64x: fix PIO mode setup (take 3) alim15x3: fix PIO mode setup
Diffstat (limited to 'drivers/ide/pci/alim15x3.c')
-rw-r--r--drivers/ide/pci/alim15x3.c35
1 files changed, 27 insertions, 8 deletions
diff --git a/drivers/ide/pci/alim15x3.c b/drivers/ide/pci/alim15x3.c
index 4debd18d52f..83e0aa65a43 100644
--- a/drivers/ide/pci/alim15x3.c
+++ b/drivers/ide/pci/alim15x3.c
@@ -1,5 +1,5 @@
/*
- * linux/drivers/ide/pci/alim15x3.c Version 0.17 2003/01/02
+ * linux/drivers/ide/pci/alim15x3.c Version 0.21 2007/02/03
*
* Copyright (C) 1998-2000 Michel Aubry, Maintainer
* Copyright (C) 1998-2000 Andrzej Krzysztofowicz, Maintainer
@@ -9,6 +9,7 @@
* May be copied or modified under the terms of the GNU General Public License
* Copyright (C) 2002 Alan Cox <alan@redhat.com>
* ALi (now ULi M5228) support by Clear Zhang <Clear.Zhang@ali.com.tw>
+ * Copyright (C) 2007 MontaVista Software, Inc. <source@mvista.com>
*
* (U)DMA capable version of ali 1533/1543(C), 1535(D)
*
@@ -280,15 +281,17 @@ static int ali_get_info (char *buffer, char **addr, off_t offset, int count)
#endif /* defined(DISPLAY_ALI_TIMINGS) && defined(CONFIG_PROC_FS) */
/**
- * ali15x3_tune_drive - set up a drive
+ * ali15x3_tune_pio - set up chipset for PIO mode
* @drive: drive to tune
- * @pio: unused
+ * @pio: desired mode
*
- * Select the best PIO timing for the drive in question. Then
- * program the controller for this drive set up
+ * Select the best PIO mode for the drive in question.
+ * Then program the controller for this mode.
+ *
+ * Returns the PIO mode programmed.
*/
-static void ali15x3_tune_drive (ide_drive_t *drive, u8 pio)
+static u8 ali15x3_tune_pio (ide_drive_t *drive, u8 pio)
{
ide_pio_data_t d;
ide_hwif_t *hwif = HWIF(drive);
@@ -356,6 +359,22 @@ static void ali15x3_tune_drive (ide_drive_t *drive, u8 pio)
* { 20, 50, 30 } PIO Mode 5 with IORDY (nonstandard)
*/
+ return pio;
+}
+
+/**
+ * ali15x3_tune_drive - set up drive for PIO mode
+ * @drive: drive to tune
+ * @pio: desired mode
+ *
+ * Program the controller with the best PIO timing for the given drive.
+ * Then set up the drive itself.
+ */
+
+static void ali15x3_tune_drive (ide_drive_t *drive, u8 pio)
+{
+ pio = ali15x3_tune_pio(drive, pio);
+ (void) ide_config_drive_speed(drive, XFER_PIO_0 + pio);
}
/**
@@ -430,7 +449,7 @@ static u8 ali15x3_ratemask (ide_drive_t *drive)
}
/**
- * ali15x3_tune_chipset - set up chiset for new speed
+ * ali15x3_tune_chipset - set up chipset/drive for new speed
* @drive: drive to configure for
* @xferspeed: desired speed
*
@@ -461,7 +480,7 @@ static int ali15x3_tune_chipset (ide_drive_t *drive, u8 xferspeed)
pci_write_config_byte(dev, m5229_udma, tmpbyte);
if (speed < XFER_SW_DMA_0)
- ali15x3_tune_drive(drive, speed);
+ (void) ali15x3_tune_pio(drive, speed - XFER_PIO_0);
} else {
pci_read_config_byte(dev, m5229_udma, &tmpbyte);
tmpbyte &= (0x0f << ((1-unit) << 2));