Commit 49e54187 authored by Miquel Raynal's avatar Miquel Raynal Committed by Jens Axboe

ata: libahci_platform: comply to PHY framework

Current implementation of the libahci does not take into account the
new PHY framework. Correct the situation by adding a call to
phy_set_mode() before phy_power_on().

PHYs should also be handled at suspend/resume time. For this, call
ahci_platform_enable/disable_phys() at suspend/resume_host() time. These
calls are guarded by a HFLAG (AHCI_HFLAG_SUSPEND_PHYS) that the user of
the libahci driver must set manually in hpriv->flags at probe time. This
is to avoid breaking users that have not been tested with this change.
Reviewed-by: default avatarHans de Goede <hdegoede@redhat.com>
Suggested-by: default avatarGrzegorz Jaszczyk <jaz@semihalf.com>
Signed-off-by: default avatarMiquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent a39c330d
......@@ -254,6 +254,8 @@ enum {
AHCI_HFLAG_IS_MOBILE = (1 << 25), /* mobile chipset, use
SATA_MOBILE_LPM_POLICY
as default lpm_policy */
AHCI_HFLAG_SUSPEND_PHYS = (1 << 26), /* handle PHYs during
suspend/resume */
/* ap->flags bits */
......
......@@ -56,6 +56,12 @@ static int ahci_platform_enable_phys(struct ahci_host_priv *hpriv)
if (rc)
goto disable_phys;
rc = phy_set_mode(hpriv->phys[i], PHY_MODE_SATA);
if (rc) {
phy_exit(hpriv->phys[i]);
goto disable_phys;
}
rc = phy_power_on(hpriv->phys[i]);
if (rc) {
phy_exit(hpriv->phys[i]);
......@@ -738,6 +744,9 @@ int ahci_platform_suspend_host(struct device *dev)
writel(ctl, mmio + HOST_CTL);
readl(mmio + HOST_CTL); /* flush */
if (hpriv->flags & AHCI_HFLAG_SUSPEND_PHYS)
ahci_platform_disable_phys(hpriv);
return ata_host_suspend(host, PMSG_SUSPEND);
}
EXPORT_SYMBOL_GPL(ahci_platform_suspend_host);
......@@ -756,6 +765,7 @@ EXPORT_SYMBOL_GPL(ahci_platform_suspend_host);
int ahci_platform_resume_host(struct device *dev)
{
struct ata_host *host = dev_get_drvdata(dev);
struct ahci_host_priv *hpriv = host->private_data;
int rc;
if (dev->power.power_state.event == PM_EVENT_SUSPEND) {
......@@ -766,6 +776,9 @@ int ahci_platform_resume_host(struct device *dev)
ahci_init_controller(host);
}
if (hpriv->flags & AHCI_HFLAG_SUSPEND_PHYS)
ahci_platform_enable_phys(hpriv);
ata_host_resume(host);
return 0;
......
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