linux-kernel - [PATCH v2 1/3] ata: ahci: Add new board low_power_no_debounce

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Message-Id: <20220321212431.13717-1-pmenzel@molgen.mpg.de>
Date:   Mon, 21 Mar 2022 22:24:30 +0100
From:   Paul Menzel <pmenzel@...gen.mpg.de>
To:     Damien Le Moal <damien.lemoal@...nsource.wdc.com>
Cc:     Paul Menzel <pmenzel@...gen.mpg.de>,
        Hans de Goede <hdegoede@...hat.com>,
        Mario Limonciello <mario.limonciello@....com>,
        linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 1/3] ata: ahci: Add new board low_power_no_debounce_delay

Some adapters do not require the default 200 ms debounce delay in
`sata_link_resume()`. So, create the new board
`board_ahci_low_power_no_debounce_delay` with the link flag
`ATA_LFLAG_NO_DEBOUNCE_DELAY`.

Signed-off-by: Paul Menzel <pmenzel@...gen.mpg.de>
Cc: Hans de Goede <hdegoede@...hat.com>
Cc: Mario Limonciello <mario.limonciello@....com>
---
v2: Resend

 drivers/ata/ahci.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 84456c05e8452..0fc09b86a5590 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -51,6 +51,7 @@ enum board_ids {
 	board_ahci,
 	board_ahci_ign_iferr,
 	board_ahci_low_power,
+	board_ahci_low_power_no_debounce_delay,
 	board_ahci_no_debounce_delay,
 	board_ahci_nomsi,
 	board_ahci_noncq,
@@ -142,6 +143,14 @@ static const struct ata_port_info ahci_port_info[] = {
 		.udma_mask	= ATA_UDMA6,
 		.port_ops	= &ahci_ops,
 	},
+	[board_ahci_low_power_no_debounce_delay] = {
+		AHCI_HFLAGS	(AHCI_HFLAG_USE_LPM_POLICY),
+		.flags		= AHCI_FLAG_COMMON,
+		.link_flags	= ATA_LFLAG_NO_DEBOUNCE_DELAY,
+		.pio_mask	= ATA_PIO4,
+		.udma_mask	= ATA_UDMA6,
+		.port_ops	= &ahci_ops,
+	},
 	[board_ahci_no_debounce_delay] = {
 		.flags		= AHCI_FLAG_COMMON,
 		.link_flags	= ATA_LFLAG_NO_DEBOUNCE_DELAY,
-- 
2.30.2