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ata: sata_dwc_460ex: add phy support

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This adds support for powering on an optional PHY when activating the
device.

Tested-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Mans Rullgard 2016-04-26 12:03:11 +03:00 committed by Tejun Heo
parent 50b433753d
commit 0f48debdb9
2 changed files with 23 additions and 0 deletions
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1
drivers/ata/Kconfig
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@ -305,6 +305,7 @@ config ATA_PIIX
config SATA_DWC
tristate "DesignWare Cores SATA support"
select GENERIC_PHY
help
This option enables support for the on-chip SATA controller of the
AppliedMicro processor 460EX.

22
drivers/ata/sata_dwc_460ex.c
View File

@ -35,6 +35,7 @@
#include <linux/of_irq.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/phy/phy.h>
#include <linux/libata.h>
#include <linux/slab.h>
@ -145,6 +146,7 @@ struct sata_dwc_device {
struct ata_host *host;
u8 __iomem *reg_base;
struct sata_dwc_regs *sata_dwc_regs; /* DW Synopsys SATA specific */
struct phy *phy;
#ifdef CONFIG_SATA_DWC_OLD_DMA
struct dw_dma_chip *dma;
#endif
@ -948,6 +950,10 @@ static int sata_dwc_port_start(struct ata_port *ap)
if (err)
goto CLEANUP_ALLOC;
err = phy_power_on(hsdev->phy);
if (err)
goto CLEANUP_ALLOC;
for (i = 0; i < SATA_DWC_QCMD_MAX; i++)
hsdevp->cmd_issued[i] = SATA_DWC_CMD_ISSUED_NOT;
@ -983,11 +989,13 @@ CLEANUP:
static void sata_dwc_port_stop(struct ata_port *ap)
{
struct sata_dwc_device_port *hsdevp = HSDEVP_FROM_AP(ap);
struct sata_dwc_device *hsdev = HSDEV_FROM_AP(ap);
dev_dbg(ap->dev, "%s: ap->id = %d\n", __func__, ap->print_id);
dmaengine_terminate_all(hsdevp->chan);
dma_release_channel(hsdevp->chan);
phy_power_off(hsdev->phy);
kfree(hsdevp);
ap->private_data = NULL;
@ -1321,6 +1329,17 @@ static int sata_dwc_probe(struct platform_device *ofdev)
}
#endif
hsdev->phy = devm_phy_optional_get(hsdev->dev, "sata-phy");
if (IS_ERR(hsdev->phy)) {
err = PTR_ERR(hsdev->phy);
hsdev->phy = NULL;
goto error_out;
}
err = phy_init(hsdev->phy);
if (err)
goto error_out;
/*
* Now, register with libATA core, this will also initiate the
* device discovery process, invoking our port_start() handler &
@ -1334,6 +1353,7 @@ static int sata_dwc_probe(struct platform_device *ofdev)
return 0;
error_out:
phy_exit(hsdev->phy);
iounmap(base);
return err;
}
@ -1346,6 +1366,8 @@ static int sata_dwc_remove(struct platform_device *ofdev)
ata_host_detach(host);
phy_exit(hsdev->phy);
#ifdef CONFIG_SATA_DWC_OLD_DMA
/* Free SATA DMA resources */
sata_dwc_dma_exit_old(hsdev);