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Commit d6ecf158 authored by Thomas Petazzoni's avatar Thomas Petazzoni Committed by Tejun Heo
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ata: ahci_mvebu: add suspend/resume support 



This commit adds suspend/resume support to the ahci_mvebu driver. The
suspend hook doesn't do anything special despite calling the generic
ahci_platform_suspend_host() function. However, the resume hook has to
restore the MBus windows configuration, as well as the regret option.

Tested on Marvell Armada 388 GP.

Signed-off-by: default avatarThomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: default avatarTejun Heo <tj@kernel.org>
parent 34c56932

drivers/ata/ahci_mvebu.c

+22 −0
Original line number Diff line number Diff line
@@ -62,6 +62,26 @@ static void ahci_mvebu_regret_option(struct ahci_host_priv *hpriv) 
	writel(0x80, hpriv->mmio + AHCI_VENDOR_SPECIFIC_0_DATA);

}



static int ahci_mvebu_suspend(struct platform_device *pdev, pm_message_t state)

{

	return ahci_platform_suspend_host(&pdev->dev);

}



static int ahci_mvebu_resume(struct platform_device *pdev)

{

	struct ata_host *host = platform_get_drvdata(pdev);

	struct ahci_host_priv *hpriv = host->private_data;

	const struct mbus_dram_target_info *dram;



	dram = mv_mbus_dram_info();

	if (dram)

		ahci_mvebu_mbus_config(hpriv, dram);



	ahci_mvebu_regret_option(hpriv);



	return ahci_platform_resume_host(&pdev->dev);

}



static const struct ata_port_info ahci_mvebu_port_info = {

	.flags	   = AHCI_FLAG_COMMON,

	.pio_mask  = ATA_PIO4,
@@ -120,6 +140,8 @@ MODULE_DEVICE_TABLE(of, ahci_mvebu_of_match); 
static struct platform_driver ahci_mvebu_driver = {

	.probe = ahci_mvebu_probe,

	.remove = ata_platform_remove_one,

	.suspend = ahci_mvebu_suspend,

	.resume = ahci_mvebu_resume,

	.driver = {

		.name = DRV_NAME,

		.of_match_table = ahci_mvebu_of_match,