diff options
| author | Mans Rullgard <mans@mansr.com> | 2016-04-26 11:03:11 +0200 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2016-05-10 18:29:19 +0200 |
| commit | 0f48debdb90601ec37cdcb81f796ca120aae60f4 (patch) | |
| tree | 7d29cae48fb40ee59a8ceb18c6072564074f14da /drivers/ata | |
| parent | ata: sata_dwc_460ex: use "dmas" DT property to find dma channel (diff) | |
| download | linux-0f48debdb90601ec37cdcb81f796ca120aae60f4.tar.xz linux-0f48debdb90601ec37cdcb81f796ca120aae60f4.zip | |
ata: sata_dwc_460ex: add phy support
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>
Diffstat (limited to 'drivers/ata')
| -rw-r--r-- | drivers/ata/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/ata/sata_dwc_460ex.c | 22 |
2 files changed, 23 insertions, 0 deletions
diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig index fec561957e16..3f9bbbf89941 100644 --- a/drivers/ata/Kconfig +++ b/drivers/ata/Kconfig @@ -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. diff --git a/drivers/ata/sata_dwc_460ex.c b/drivers/ata/sata_dwc_460ex.c index 200af36e8602..4b8eded09c06 100644 --- a/drivers/ata/sata_dwc_460ex.c +++ b/drivers/ata/sata_dwc_460ex.c @@ -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); |