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Commit c304193a authored by Alan Cox's avatar Alan Cox Committed by Jeff Garzik
Browse files

[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: default avatarAlan Cox <alan@redhat.com>
Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
parent f535d53f

drivers/ata/pata_amd.c

+23 −2
Original line number Diff line number Diff line
@@ -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)