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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.c118
1 files changed, 102 insertions, 16 deletions
diff --git a/drivers/ata/sata_rcar.c b/drivers/ata/sata_rcar.c
index 1dae9a9009f7..2b25bd83fc9d 100644
--- a/drivers/ata/sata_rcar.c
+++ b/drivers/ata/sata_rcar.c
@@ -15,6 +15,7 @@
#include <linux/module.h>
#include <linux/ata.h>
#include <linux/libata.h>
+#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
#include <linux/err.h>
@@ -123,12 +124,37 @@
#define SATA_RCAR_DMA_BOUNDARY 0x1FFFFFFEUL
+/* Gen2 Physical Layer Control Registers */
+#define RCAR_GEN2_PHY_CTL1_REG 0x1704
+#define RCAR_GEN2_PHY_CTL1 0x34180002
+#define RCAR_GEN2_PHY_CTL1_SS 0xC180 /* Spread Spectrum */
+
+#define RCAR_GEN2_PHY_CTL2_REG 0x170C
+#define RCAR_GEN2_PHY_CTL2 0x00002303
+
+#define RCAR_GEN2_PHY_CTL3_REG 0x171C
+#define RCAR_GEN2_PHY_CTL3 0x000B0194
+
+#define RCAR_GEN2_PHY_CTL4_REG 0x1724
+#define RCAR_GEN2_PHY_CTL4 0x00030994
+
+#define RCAR_GEN2_PHY_CTL5_REG 0x1740
+#define RCAR_GEN2_PHY_CTL5 0x03004001
+#define RCAR_GEN2_PHY_CTL5_DC BIT(1) /* DC connection */
+#define RCAR_GEN2_PHY_CTL5_TR BIT(2) /* Termination Resistor */
+
+enum sata_rcar_type {
+ RCAR_GEN1_SATA,
+ RCAR_GEN2_SATA,
+};
+
struct sata_rcar_priv {
void __iomem *base;
struct clk *clk;
+ enum sata_rcar_type type;
};
-static void sata_rcar_phy_initialize(struct sata_rcar_priv *priv)
+static void sata_rcar_gen1_phy_preinit(struct sata_rcar_priv *priv)
{
void __iomem *base = priv->base;
@@ -141,8 +167,8 @@ static void sata_rcar_phy_initialize(struct sata_rcar_priv *priv)
iowrite32(0, base + SATAPHYRESET_REG);
}
-static void sata_rcar_phy_write(struct sata_rcar_priv *priv, u16 reg, u32 val,
- int group)
+static void sata_rcar_gen1_phy_write(struct sata_rcar_priv *priv, u16 reg,
+ u32 val, int group)
{
void __iomem *base = priv->base;
int timeout;
@@ -170,6 +196,29 @@ static void sata_rcar_phy_write(struct sata_rcar_priv *priv, u16 reg, u32 val,
iowrite32(0, base + SATAPHYADDR_REG);
}
+static void sata_rcar_gen1_phy_init(struct sata_rcar_priv *priv)
+{
+ sata_rcar_gen1_phy_preinit(priv);
+ sata_rcar_gen1_phy_write(priv, SATAPCTLR1_REG, 0x00200188, 0);
+ sata_rcar_gen1_phy_write(priv, SATAPCTLR1_REG, 0x00200188, 1);
+ sata_rcar_gen1_phy_write(priv, SATAPCTLR3_REG, 0x0000A061, 0);
+ sata_rcar_gen1_phy_write(priv, SATAPCTLR2_REG, 0x20000000, 0);
+ sata_rcar_gen1_phy_write(priv, SATAPCTLR2_REG, 0x20000000, 1);
+ sata_rcar_gen1_phy_write(priv, SATAPCTLR4_REG, 0x28E80000, 0);
+}
+
+static void sata_rcar_gen2_phy_init(struct sata_rcar_priv *priv)
+{
+ void __iomem *base = priv->base;
+
+ iowrite32(RCAR_GEN2_PHY_CTL1, base + RCAR_GEN2_PHY_CTL1_REG);
+ iowrite32(RCAR_GEN2_PHY_CTL2, base + RCAR_GEN2_PHY_CTL2_REG);
+ iowrite32(RCAR_GEN2_PHY_CTL3, base + RCAR_GEN2_PHY_CTL3_REG);
+ iowrite32(RCAR_GEN2_PHY_CTL4, base + RCAR_GEN2_PHY_CTL4_REG);
+ iowrite32(RCAR_GEN2_PHY_CTL5 | RCAR_GEN2_PHY_CTL5_DC |
+ RCAR_GEN2_PHY_CTL5_TR, base + RCAR_GEN2_PHY_CTL5_REG);
+}
+
static void sata_rcar_freeze(struct ata_port *ap)
{
struct sata_rcar_priv *priv = ap->host->private_data;
@@ -738,13 +787,17 @@ static void sata_rcar_init_controller(struct ata_host *host)
u32 val;
/* reset and setup phy */
- sata_rcar_phy_initialize(priv);
- sata_rcar_phy_write(priv, SATAPCTLR1_REG, 0x00200188, 0);
- sata_rcar_phy_write(priv, SATAPCTLR1_REG, 0x00200188, 1);
- sata_rcar_phy_write(priv, SATAPCTLR3_REG, 0x0000A061, 0);
- sata_rcar_phy_write(priv, SATAPCTLR2_REG, 0x20000000, 0);
- sata_rcar_phy_write(priv, SATAPCTLR2_REG, 0x20000000, 1);
- sata_rcar_phy_write(priv, SATAPCTLR4_REG, 0x28E80000, 0);
+ switch (priv->type) {
+ case RCAR_GEN1_SATA:
+ sata_rcar_gen1_phy_init(priv);
+ break;
+ case RCAR_GEN2_SATA:
+ sata_rcar_gen2_phy_init(priv);
+ break;
+ default:
+ dev_warn(host->dev, "SATA phy is not initialized\n");
+ break;
+ }
/* SATA-IP reset state */
val = ioread32(base + ATAPI_CONTROL1_REG);
@@ -770,8 +823,40 @@ static void sata_rcar_init_controller(struct ata_host *host)
iowrite32(ATAPI_INT_ENABLE_SATAINT, base + ATAPI_INT_ENABLE_REG);
}
+static struct of_device_id sata_rcar_match[] = {
+ {
+ /* Deprecated by "renesas,sata-r8a7779" */
+ .compatible = "renesas,rcar-sata",
+ .data = (void *)RCAR_GEN1_SATA,
+ },
+ {
+ .compatible = "renesas,sata-r8a7779",
+ .data = (void *)RCAR_GEN1_SATA,
+ },
+ {
+ .compatible = "renesas,sata-r8a7790",
+ .data = (void *)RCAR_GEN2_SATA
+ },
+ {
+ .compatible = "renesas,sata-r8a7791",
+ .data = (void *)RCAR_GEN2_SATA
+ },
+ { },
+};
+MODULE_DEVICE_TABLE(of, sata_rcar_match);
+
+static const struct platform_device_id sata_rcar_id_table[] = {
+ { "sata_rcar", RCAR_GEN1_SATA }, /* Deprecated by "sata-r8a7779" */
+ { "sata-r8a7779", RCAR_GEN1_SATA },
+ { "sata-r8a7790", RCAR_GEN2_SATA },
+ { "sata-r8a7791", RCAR_GEN2_SATA },
+ { },
+};
+MODULE_DEVICE_TABLE(platform, sata_rcar_id_table);
+
static int sata_rcar_probe(struct platform_device *pdev)
{
+ const struct of_device_id *of_id;
struct ata_host *host;
struct sata_rcar_priv *priv;
struct resource *mem;
@@ -787,6 +872,12 @@ static int sata_rcar_probe(struct platform_device *pdev)
if (!priv)
return -ENOMEM;
+ of_id = of_match_device(sata_rcar_match, &pdev->dev);
+ if (of_id)
+ priv->type = (enum sata_rcar_type)of_id->data;
+ else
+ priv->type = platform_get_device_id(pdev)->driver_data;
+
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");
@@ -892,15 +983,10 @@ static const struct dev_pm_ops sata_rcar_pm_ops = {
};
#endif
-static struct of_device_id sata_rcar_match[] = {
- { .compatible = "renesas,rcar-sata", },
- {},
-};
-MODULE_DEVICE_TABLE(of, sata_rcar_match);
-
static struct platform_driver sata_rcar_driver = {
.probe = sata_rcar_probe,
.remove = sata_rcar_remove,
+ .id_table = sata_rcar_id_table,
.driver = {
.name = DRV_NAME,
.owner = THIS_MODULE,