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| author | Thomas Petazzoni <thomas.petazzoni@free-electrons.com> | 2015-06-17 14:11:01 +0200 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2015-06-17 14:25:53 -0400 |
| commit | d6ecf158148883be1588859c46d6d424513e2e0d (patch) | |
| tree | 83428d4d11b732c65c3c98dc82705c9180b8edca /drivers/ata | |
| parent | 34c56932ce5278b8bbae13936f9df05cd59e3193 (diff) | |
| download | linux-d6ecf158148883be1588859c46d6d424513e2e0d.tar.bz2 | |
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: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'drivers/ata')
| -rw-r--r-- | drivers/ata/ahci_mvebu.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/ata/ahci_mvebu.c b/drivers/ata/ahci_mvebu.c index 23716dd8a7ec..8cbbedebadbb 100644 --- a/drivers/ata/ahci_mvebu.c +++ b/drivers/ata/ahci_mvebu.c @@ -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, |