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| author | Alan <alan@lxorguk.ukuu.org.uk> | 2006-11-27 16:21:24 +0000 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2006-12-01 22:46:56 -0500 |
| commit | c304193a005b5262671c1389b1cae96d7afc952a (patch) | |
| tree | 7477058dbe52a631315ef62657bf0300772a49d1 /drivers/ata/pata_amd.c | |
| parent | f535d53f3f8bc8243ad2167d7127f6efba9b46cb (diff) | |
| download | lwn-c304193a005b5262671c1389b1cae96d7afc952a.tar.gz lwn-c304193a005b5262671c1389b1cae96d7afc952a.zip | |
[PATCH] pata_amd: suspend/resume
Early AMD chips require FIFO and/or simplex flag clearing work on resume
from RAM. Most devices need no help
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/ata/pata_amd.c')
| -rw-r--r-- | drivers/ata/pata_amd.c | 25 |
1 files changed, 23 insertions, 2 deletions
diff --git a/drivers/ata/pata_amd.c b/drivers/ata/pata_amd.c index 8be46a63af74..d9571206e580 100644 --- a/drivers/ata/pata_amd.c +++ b/drivers/ata/pata_amd.c @@ -25,7 +25,7 @@ #include <linux/libata.h> #define DRV_NAME "pata_amd" -#define DRV_VERSION "0.2.4" +#define DRV_VERSION "0.2.7" /** * timing_setup - shared timing computation and load @@ -335,6 +335,8 @@ static struct scsi_host_template amd_sht = { .slave_configure = ata_scsi_slave_config, .slave_destroy = ata_scsi_slave_destroy, .bios_param = ata_std_bios_param, + .resume = ata_scsi_device_resume, + .suspend = ata_scsi_device_suspend, }; static struct ata_port_operations amd33_port_ops = { @@ -662,6 +664,23 @@ static int amd_init_one(struct pci_dev *pdev, const struct pci_device_id *id) return ata_pci_init_one(pdev, port_info, 2); } +static int amd_reinit_one(struct pci_dev *pdev) +{ + if (pdev->vendor == PCI_VENDOR_ID_AMD) { + u8 fifo; + pci_read_config_byte(pdev, 0x41, &fifo); + if (pdev->device == PCI_DEVICE_ID_AMD_VIPER_7411) + /* FIFO is broken */ + pci_write_config_byte(pdev, 0x41, fifo & 0x0F); + else + pci_write_config_byte(pdev, 0x41, fifo | 0xF0); + if (pdev->device == PCI_DEVICE_ID_AMD_VIPER_7409 || + pdev->device == PCI_DEVICE_ID_AMD_COBRA_7401) + ata_pci_clear_simplex(pdev); + } + return ata_pci_device_resume(pdev); +} + static const struct pci_device_id amd[] = { { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_COBRA_7401), 0 }, { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_VIPER_7409), 1 }, @@ -689,7 +708,9 @@ static struct pci_driver amd_pci_driver = { .name = DRV_NAME, .id_table = amd, .probe = amd_init_one, - .remove = ata_pci_remove_one + .remove = ata_pci_remove_one, + .suspend = ata_pci_device_suspend, + .resume = amd_reinit_one, }; static int __init amd_init(void) |