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path: root/drivers/ata/sata_rcar.c
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Diffstat (limited to 'drivers/ata/sata_rcar.c')
-rw-r--r--drivers/ata/sata_rcar.c76
1 files changed, 39 insertions, 37 deletions
diff --git a/drivers/ata/sata_rcar.c b/drivers/ata/sata_rcar.c
index 6456e07db72a..10ecb232245d 100644
--- a/drivers/ata/sata_rcar.c
+++ b/drivers/ata/sata_rcar.c
@@ -17,7 +17,7 @@
#include <linux/libata.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
-#include <linux/clk.h>
+#include <linux/pm_runtime.h>
#include <linux/err.h>
#define DRV_NAME "sata_rcar"
@@ -109,6 +109,8 @@
#define SATAINTMASK_ERRMSK BIT(2)
#define SATAINTMASK_ERRCRTMSK BIT(1)
#define SATAINTMASK_ATAMSK BIT(0)
+#define SATAINTMASK_ALL_GEN1 0x7ff
+#define SATAINTMASK_ALL_GEN2 0xfff
#define SATA_RCAR_INT_MASK (SATAINTMASK_SERRMSK | \
SATAINTMASK_ATAMSK)
@@ -152,7 +154,7 @@ enum sata_rcar_type {
struct sata_rcar_priv {
void __iomem *base;
- struct clk *clk;
+ u32 sataint_mask;
enum sata_rcar_type type;
};
@@ -226,7 +228,7 @@ static void sata_rcar_freeze(struct ata_port *ap)
struct sata_rcar_priv *priv = ap->host->private_data;
/* mask */
- iowrite32(0x7ff, priv->base + SATAINTMASK_REG);
+ iowrite32(priv->sataint_mask, priv->base + SATAINTMASK_REG);
ata_sff_freeze(ap);
}
@@ -242,7 +244,7 @@ static void sata_rcar_thaw(struct ata_port *ap)
ata_sff_thaw(ap);
/* unmask */
- iowrite32(0x7ff & ~SATA_RCAR_INT_MASK, base + SATAINTMASK_REG);
+ iowrite32(priv->sataint_mask & ~SATA_RCAR_INT_MASK, base + SATAINTMASK_REG);
}
static void sata_rcar_ioread16_rep(void __iomem *reg, void *buffer, int count)
@@ -736,7 +738,7 @@ static irqreturn_t sata_rcar_interrupt(int irq, void *dev_instance)
if (!sataintstat)
goto done;
/* ack */
- iowrite32(~sataintstat & 0x7ff, base + SATAINTSTAT_REG);
+ iowrite32(~sataintstat & priv->sataint_mask, base + SATAINTSTAT_REG);
ap = host->ports[0];
@@ -809,7 +811,7 @@ static void sata_rcar_init_module(struct sata_rcar_priv *priv)
/* ack and mask */
iowrite32(0, base + SATAINTSTAT_REG);
- iowrite32(0x7ff, base + SATAINTMASK_REG);
+ iowrite32(priv->sataint_mask, base + SATAINTMASK_REG);
/* enable interrupts */
iowrite32(ATAPI_INT_ENABLE_SATAINT, base + ATAPI_INT_ENABLE_REG);
@@ -819,16 +821,20 @@ static void sata_rcar_init_controller(struct ata_host *host)
{
struct sata_rcar_priv *priv = host->private_data;
+ priv->sataint_mask = SATAINTMASK_ALL_GEN2;
+
/* reset and setup phy */
switch (priv->type) {
case RCAR_GEN1_SATA:
+ priv->sataint_mask = SATAINTMASK_ALL_GEN1;
sata_rcar_gen1_phy_init(priv);
break;
case RCAR_GEN2_SATA:
- case RCAR_GEN3_SATA:
case RCAR_R8A7790_ES1_SATA:
sata_rcar_gen2_phy_init(priv);
break;
+ case RCAR_GEN3_SATA:
+ break;
default:
dev_warn(host->dev, "SATA phy is not initialized\n");
break;
@@ -881,6 +887,7 @@ MODULE_DEVICE_TABLE(of, sata_rcar_match);
static int sata_rcar_probe(struct platform_device *pdev)
{
+ struct device *dev = &pdev->dev;
struct ata_host *host;
struct sata_rcar_priv *priv;
struct resource *mem;
@@ -891,36 +898,31 @@ static int sata_rcar_probe(struct platform_device *pdev)
if (irq <= 0)
return -EINVAL;
- priv = devm_kzalloc(&pdev->dev, sizeof(struct sata_rcar_priv),
- GFP_KERNEL);
+ priv = devm_kzalloc(dev, sizeof(struct sata_rcar_priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
- priv->type = (enum sata_rcar_type)of_device_get_match_data(&pdev->dev);
- priv->clk = devm_clk_get(&pdev->dev, NULL);
- if (IS_ERR(priv->clk)) {
- dev_err(&pdev->dev, "failed to get access to sata clock\n");
- return PTR_ERR(priv->clk);
- }
+ priv->type = (enum sata_rcar_type)of_device_get_match_data(dev);
- ret = clk_prepare_enable(priv->clk);
- if (ret)
- return ret;
+ pm_runtime_enable(dev);
+ ret = pm_runtime_get_sync(dev);
+ if (ret < 0)
+ goto err_pm_disable;
- host = ata_host_alloc(&pdev->dev, 1);
+ host = ata_host_alloc(dev, 1);
if (!host) {
- dev_err(&pdev->dev, "ata_host_alloc failed\n");
+ dev_err(dev, "ata_host_alloc failed\n");
ret = -ENOMEM;
- goto cleanup;
+ goto err_pm_put;
}
host->private_data = priv;
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- priv->base = devm_ioremap_resource(&pdev->dev, mem);
+ priv->base = devm_ioremap_resource(dev, mem);
if (IS_ERR(priv->base)) {
ret = PTR_ERR(priv->base);
- goto cleanup;
+ goto err_pm_put;
}
/* setup port */
@@ -934,9 +936,10 @@ static int sata_rcar_probe(struct platform_device *pdev)
if (!ret)
return 0;
-cleanup:
- clk_disable_unprepare(priv->clk);
-
+err_pm_put:
+ pm_runtime_put(dev);
+err_pm_disable:
+ pm_runtime_disable(dev);
return ret;
}
@@ -952,9 +955,10 @@ static int sata_rcar_remove(struct platform_device *pdev)
iowrite32(0, base + ATAPI_INT_ENABLE_REG);
/* ack and mask */
iowrite32(0, base + SATAINTSTAT_REG);
- iowrite32(0x7ff, base + SATAINTMASK_REG);
+ iowrite32(priv->sataint_mask, base + SATAINTMASK_REG);
- clk_disable_unprepare(priv->clk);
+ pm_runtime_put(&pdev->dev);
+ pm_runtime_disable(&pdev->dev);
return 0;
}
@@ -972,9 +976,9 @@ static int sata_rcar_suspend(struct device *dev)
/* disable interrupts */
iowrite32(0, base + ATAPI_INT_ENABLE_REG);
/* mask */
- iowrite32(0x7ff, base + SATAINTMASK_REG);
+ iowrite32(priv->sataint_mask, base + SATAINTMASK_REG);
- clk_disable_unprepare(priv->clk);
+ pm_runtime_put(dev);
}
return ret;
@@ -987,17 +991,16 @@ static int sata_rcar_resume(struct device *dev)
void __iomem *base = priv->base;
int ret;
- ret = clk_prepare_enable(priv->clk);
- if (ret)
+ ret = pm_runtime_get_sync(dev);
+ if (ret < 0)
return ret;
if (priv->type == RCAR_GEN3_SATA) {
- sata_rcar_gen2_phy_init(priv);
sata_rcar_init_module(priv);
} else {
/* ack and mask */
iowrite32(0, base + SATAINTSTAT_REG);
- iowrite32(0x7ff, base + SATAINTMASK_REG);
+ iowrite32(priv->sataint_mask, base + SATAINTMASK_REG);
/* enable interrupts */
iowrite32(ATAPI_INT_ENABLE_SATAINT,
@@ -1012,11 +1015,10 @@ static int sata_rcar_resume(struct device *dev)
static int sata_rcar_restore(struct device *dev)
{
struct ata_host *host = dev_get_drvdata(dev);
- struct sata_rcar_priv *priv = host->private_data;
int ret;
- ret = clk_prepare_enable(priv->clk);
- if (ret)
+ ret = pm_runtime_get_sync(dev);
+ if (ret < 0)
return ret;
sata_rcar_setup_port(host);