linux-kernel - [PATCH 1/2] ahci: Add Green Sardine vendor ID as board_ahci

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Message-ID: <20211112201539.17377-1-mario.limonciello@amd.com>
Date:   Fri, 12 Nov 2021 14:15:38 -0600
From:   Mario Limonciello <mario.limonciello@....com>
To:     Damien Le Moal <damien.lemoal@...nsource.wdc.com>
CC:     "open list:LIBATA SUBSYSTEM (Serial and Parallel ATA drivers)" 
        <linux-ide@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>,
        "Mario Limonciello" <mario.limonciello@....com>,
        Nehal-bakulchandra Shah <Nehal-bakulchandra.Shah@....com>
Subject: [PATCH 1/2] ahci: Add Green Sardine vendor ID as board_ahci_mobile

AMD requires that the SATA controller be configured for devsleep in order
for S0i3 entry to work properly.

commit b1a9585cc396 ("ata: ahci: Enable DEVSLP by default on x86 with
SLP_S0") sets up a kernel policy to enable devsleep on Intel mobile
platforms that are using s0ix.  Add the PCI ID for the SATA controller in
Green Sardine platforms to extend this policy by default for AMD based
systems using s0i3 as well.

Cc: Nehal-bakulchandra Shah <Nehal-bakulchandra.Shah@....com>
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=214091
Signed-off-by: Mario Limonciello <mario.limonciello@....com>
---
 drivers/ata/ahci.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index d60f34718b5d..1e1167e725a4 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -438,6 +438,7 @@ static const struct pci_device_id ahci_pci_tbl[] = {
 	/* AMD */
 	{ PCI_VDEVICE(AMD, 0x7800), board_ahci }, /* AMD Hudson-2 */
 	{ PCI_VDEVICE(AMD, 0x7900), board_ahci }, /* AMD CZ */
+	{ PCI_VDEVICE(AMD, 0x7901), board_ahci_mobile }, /* AMD Green Sardine */
 	/* AMD is using RAID class only for ahci controllers */
 	{ PCI_VENDOR_ID_AMD, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
 	  PCI_CLASS_STORAGE_RAID << 8, 0xffffff, board_ahci },
-- 
2.25.1