From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757149AbWK0QTk (ORCPT ); Mon, 27 Nov 2006 11:19:40 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758359AbWK0QTk (ORCPT ); Mon, 27 Nov 2006 11:19:40 -0500 Received: from outpipe-village-512-1.bc.nu ([81.2.110.250]:50570 "EHLO lxorguk.ukuu.org.uk") by vger.kernel.org with ESMTP id S1757149AbWK0QTj (ORCPT ); Mon, 27 Nov 2006 11:19:39 -0500 Date: Mon, 27 Nov 2006 16:24:15 +0000 From: Alan To: jgarzik@pobox.com, akpm@osdl.org, linux-kernel@vger.kernel.org Subject: [PATCH] hpt36x: Suspend/resume support Message-ID: <20061127162415.7e1f290c@localhost.localdomain> X-Mailer: Sylpheed-Claws 2.6.0 (GTK+ 2.8.20; x86_64-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Another chipset which needs some reconfiguration after a resume. All the chip setup is moved to a new function called in both setup and resume. Signed-off-by: Alan Cox diff -u --exclude-from /usr/src/exclude --new-file --recursive linux.vanilla-2.6.19-rc6-mm1/drivers/ata/pata_hpt366.c linux-2.6.19-rc6-mm1/drivers/ata/pata_hpt366.c --- linux.vanilla-2.6.19-rc6-mm1/drivers/ata/pata_hpt366.c 2006-11-24 13:58:28.000000000 +0000 +++ linux-2.6.19-rc6-mm1/drivers/ata/pata_hpt366.c 2006-11-24 14:35:06.000000000 +0000 @@ -27,7 +27,7 @@ #include #define DRV_NAME "pata_hpt366" -#define DRV_VERSION "0.5.1" +#define DRV_VERSION "0.5.3" struct hpt_clock { u8 xfer_speed; @@ -338,6 +338,8 @@ .dma_boundary = ATA_DMA_BOUNDARY, .slave_configure = ata_scsi_slave_config, .bios_param = ata_std_bios_param, + .resume = ata_scsi_device_resume, + .suspend = ata_scsi_device_suspend, }; /* @@ -380,6 +382,27 @@ }; /** + * hpt36x_init_chipset - common chip setup + * @dev: PCI device + * + * Perform the chip setup work that must be done at both init and + * resume time + */ + +static void hpt36x_init_chipset(struct pci_dev *dev) +{ + u8 drive_fast; + pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, (L1_CACHE_BYTES / 4)); + pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x78); + pci_write_config_byte(dev, PCI_MIN_GNT, 0x08); + pci_write_config_byte(dev, PCI_MAX_LAT, 0x08); + + pci_read_config_byte(dev, 0x51, &drive_fast); + if (drive_fast & 0x80) + pci_write_config_byte(dev, 0x51, drive_fast & ~0x80); +} + +/** * hpt36x_init_one - Initialise an HPT366/368 * @dev: PCI device * @id: Entry in match table @@ -414,7 +437,6 @@ u32 class_rev; u32 reg1; - u8 drive_fast; pci_read_config_dword(dev, PCI_CLASS_REVISION, &class_rev); class_rev &= 0xFF; @@ -424,14 +446,7 @@ if (class_rev > 2) return -ENODEV; - pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, (L1_CACHE_BYTES / 4)); - pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x78); - pci_write_config_byte(dev, PCI_MIN_GNT, 0x08); - pci_write_config_byte(dev, PCI_MAX_LAT, 0x08); - - pci_read_config_byte(dev, 0x51, &drive_fast); - if (drive_fast & 0x80) - pci_write_config_byte(dev, 0x51, drive_fast & ~0x80); + hpt36x_init_chipset(dev); pci_read_config_dword(dev, 0x40, ®1); @@ -452,9 +467,15 @@ return ata_pci_init_one(dev, port_info, 2); } +static int hpt36x_reinit_one(struct pci_dev *dev) +{ + hpt36x_init_chipset(dev); + return ata_pci_device_resume(dev); +} + + static const struct pci_device_id hpt36x[] = { { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT366), }, - { }, }; @@ -462,7 +483,9 @@ .name = DRV_NAME, .id_table = hpt36x, .probe = hpt36x_init_one, - .remove = ata_pci_remove_one + .remove = ata_pci_remove_one, + .suspend = ata_pci_device_suspend, + .resume = hpt36x_reinit_one, }; static int __init hpt36x_init(void) @@ -470,13 +493,11 @@ return pci_register_driver(&hpt36x_pci_driver); } - static void __exit hpt36x_exit(void) { pci_unregister_driver(&hpt36x_pci_driver); } - MODULE_AUTHOR("Alan Cox"); MODULE_DESCRIPTION("low-level driver for the Highpoint HPT366/368"); MODULE_LICENSE("GPL");