[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>
diff --git a/drivers/ata/pata_amd.c b/drivers/ata/pata_amd.c
index 8be46a6..d957120 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 @@
.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 @@
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 @@
.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)