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path: root/drivers/ata/ahci_imx.c
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Diffstat (limited to 'drivers/ata/ahci_imx.c')
-rw-r--r--drivers/ata/ahci_imx.c180
1 files changed, 122 insertions, 58 deletions
diff --git a/drivers/ata/ahci_imx.c b/drivers/ata/ahci_imx.c
index 6214411349de..8cb89655cf06 100644
--- a/drivers/ata/ahci_imx.c
+++ b/drivers/ata/ahci_imx.c
@@ -34,10 +34,21 @@ enum {
HOST_TIMER1MS = 0xe0, /* Timer 1-ms */
};
+enum ahci_imx_type {
+ AHCI_IMX53,
+ AHCI_IMX6Q,
+};
+
struct imx_ahci_priv {
struct platform_device *ahci_pdev;
+ enum ahci_imx_type type;
+
+ /* i.MX53 clock */
+ struct clk *sata_gate_clk;
+ /* Common clock */
struct clk *sata_ref_clk;
struct clk *ahb_clk;
+
struct regmap *gpr;
bool no_device;
bool first_time;
@@ -52,29 +63,52 @@ static int imx_sata_clock_enable(struct device *dev)
struct imx_ahci_priv *imxpriv = dev_get_drvdata(dev->parent);
int ret;
+ if (imxpriv->type == AHCI_IMX53) {
+ ret = clk_prepare_enable(imxpriv->sata_gate_clk);
+ if (ret < 0) {
+ dev_err(dev, "prepare-enable sata_gate clock err:%d\n",
+ ret);
+ return ret;
+ }
+ }
+
ret = clk_prepare_enable(imxpriv->sata_ref_clk);
if (ret < 0) {
- dev_err(dev, "prepare-enable sata_ref clock err:%d\n", ret);
- return ret;
+ dev_err(dev, "prepare-enable sata_ref clock err:%d\n",
+ ret);
+ goto clk_err;
}
- regmap_update_bits(imxpriv->gpr, IOMUXC_GPR13,
- IMX6Q_GPR13_SATA_MPLL_CLK_EN,
- IMX6Q_GPR13_SATA_MPLL_CLK_EN);
+ if (imxpriv->type == AHCI_IMX6Q) {
+ regmap_update_bits(imxpriv->gpr, IOMUXC_GPR13,
+ IMX6Q_GPR13_SATA_MPLL_CLK_EN,
+ IMX6Q_GPR13_SATA_MPLL_CLK_EN);
+ }
usleep_range(1000, 2000);
return 0;
+
+clk_err:
+ if (imxpriv->type == AHCI_IMX53)
+ clk_disable_unprepare(imxpriv->sata_gate_clk);
+ return ret;
}
static void imx_sata_clock_disable(struct device *dev)
{
struct imx_ahci_priv *imxpriv = dev_get_drvdata(dev->parent);
- regmap_update_bits(imxpriv->gpr, IOMUXC_GPR13,
- IMX6Q_GPR13_SATA_MPLL_CLK_EN,
- !IMX6Q_GPR13_SATA_MPLL_CLK_EN);
+ if (imxpriv->type == AHCI_IMX6Q) {
+ regmap_update_bits(imxpriv->gpr, IOMUXC_GPR13,
+ IMX6Q_GPR13_SATA_MPLL_CLK_EN,
+ !IMX6Q_GPR13_SATA_MPLL_CLK_EN);
+ }
+
clk_disable_unprepare(imxpriv->sata_ref_clk);
+
+ if (imxpriv->type == AHCI_IMX53)
+ clk_disable_unprepare(imxpriv->sata_gate_clk);
}
static void ahci_imx_error_handler(struct ata_port *ap)
@@ -106,9 +140,25 @@ static void ahci_imx_error_handler(struct ata_port *ap)
imxpriv->no_device = true;
}
+int ahci_imx_softreset(struct ata_link *link, unsigned int *class,
+ unsigned long deadline)
+{
+ struct ata_port *ap = link->ap;
+ struct imx_ahci_priv *imxpriv = dev_get_drvdata(ap->dev->parent);
+ int ret = -EIO;
+
+ if (imxpriv->type == AHCI_IMX53)
+ ret = ahci_pmp_retry_srst_ops.softreset(link, class, deadline);
+ else if (imxpriv->type == AHCI_IMX6Q)
+ ret = ahci_ops.softreset(link, class, deadline);
+
+ return ret;
+}
+
static struct ata_port_operations ahci_imx_ops = {
.inherits = &ahci_platform_ops,
.error_handler = ahci_imx_error_handler,
+ .softreset = ahci_imx_softreset,
};
static const struct ata_port_info ahci_imx_port_info = {
@@ -118,7 +168,7 @@ static const struct ata_port_info ahci_imx_port_info = {
.port_ops = &ahci_imx_ops,
};
-static int imx6q_sata_init(struct device *dev, void __iomem *mmio)
+static int imx_sata_init(struct device *dev, void __iomem *mmio)
{
int ret = 0;
unsigned int reg_val;
@@ -152,7 +202,7 @@ static int imx6q_sata_init(struct device *dev, void __iomem *mmio)
return 0;
}
-static void imx6q_sata_exit(struct device *dev)
+static void imx_sata_exit(struct device *dev)
{
imx_sata_clock_disable(dev);
}
@@ -182,16 +232,18 @@ static int imx_ahci_resume(struct device *dev)
return ret;
}
-static struct ahci_platform_data imx6q_sata_pdata = {
- .init = imx6q_sata_init,
- .exit = imx6q_sata_exit,
- .ata_port_info = &ahci_imx_port_info,
- .suspend = imx_ahci_suspend,
- .resume = imx_ahci_resume,
+static struct ahci_platform_data imx_sata_pdata = {
+ .init = imx_sata_init,
+ .exit = imx_sata_exit,
+ .ata_port_info = &ahci_imx_port_info,
+ .suspend = imx_ahci_suspend,
+ .resume = imx_ahci_resume,
+
};
static const struct of_device_id imx_ahci_of_match[] = {
- { .compatible = "fsl,imx6q-ahci", .data = &imx6q_sata_pdata},
+ { .compatible = "fsl,imx53-ahci", .data = (void *)AHCI_IMX53 },
+ { .compatible = "fsl,imx6q-ahci", .data = (void *)AHCI_IMX6Q },
{},
};
MODULE_DEVICE_TABLE(of, imx_ahci_of_match);
@@ -201,12 +253,20 @@ static int imx_ahci_probe(struct platform_device *pdev)
struct device *dev = &pdev->dev;
struct resource *mem, *irq, res[2];
const struct of_device_id *of_id;
+ enum ahci_imx_type type;
const struct ahci_platform_data *pdata = NULL;
struct imx_ahci_priv *imxpriv;
struct device *ahci_dev;
struct platform_device *ahci_pdev;
int ret;
+ of_id = of_match_device(imx_ahci_of_match, dev);
+ if (!of_id)
+ return -EINVAL;
+
+ type = (enum ahci_imx_type)of_id->data;
+ pdata = &imx_sata_pdata;
+
imxpriv = devm_kzalloc(dev, sizeof(*imxpriv), GFP_KERNEL);
if (!imxpriv) {
dev_err(dev, "can't alloc ahci_host_priv\n");
@@ -222,6 +282,8 @@ static int imx_ahci_probe(struct platform_device *pdev)
imxpriv->no_device = false;
imxpriv->first_time = true;
+ imxpriv->type = type;
+
imxpriv->ahb_clk = devm_clk_get(dev, "ahb");
if (IS_ERR(imxpriv->ahb_clk)) {
dev_err(dev, "can't get ahb clock.\n");
@@ -229,6 +291,15 @@ static int imx_ahci_probe(struct platform_device *pdev)
goto err_out;
}
+ if (type == AHCI_IMX53) {
+ imxpriv->sata_gate_clk = devm_clk_get(dev, "sata_gate");
+ if (IS_ERR(imxpriv->sata_gate_clk)) {
+ dev_err(dev, "can't get sata_gate clock.\n");
+ ret = PTR_ERR(imxpriv->sata_gate_clk);
+ goto err_out;
+ }
+ }
+
imxpriv->sata_ref_clk = devm_clk_get(dev, "sata_ref");
if (IS_ERR(imxpriv->sata_ref_clk)) {
dev_err(dev, "can't get sata_ref clock.\n");
@@ -239,14 +310,6 @@ static int imx_ahci_probe(struct platform_device *pdev)
imxpriv->ahci_pdev = ahci_pdev;
platform_set_drvdata(pdev, imxpriv);
- of_id = of_match_device(imx_ahci_of_match, dev);
- if (of_id) {
- pdata = of_id->data;
- } else {
- ret = -EINVAL;
- goto err_out;
- }
-
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
if (!mem || !irq) {
@@ -262,41 +325,42 @@ static int imx_ahci_probe(struct platform_device *pdev)
ahci_dev->dma_mask = &ahci_dev->coherent_dma_mask;
ahci_dev->of_node = dev->of_node;
- imxpriv->gpr =
- syscon_regmap_lookup_by_compatible("fsl,imx6q-iomuxc-gpr");
-
- if (IS_ERR(imxpriv->gpr)) {
- dev_err(dev, "failed to find fsl,imx6q-iomux-gpr regmap\n");
- ret = PTR_ERR(imxpriv->gpr);
- goto err_out;
+ if (type == AHCI_IMX6Q) {
+ imxpriv->gpr = syscon_regmap_lookup_by_compatible(
+ "fsl,imx6q-iomuxc-gpr");
+ if (IS_ERR(imxpriv->gpr)) {
+ dev_err(dev,
+ "failed to find fsl,imx6q-iomux-gpr regmap\n");
+ return PTR_ERR(imxpriv->gpr);
+ }
+
+ /*
+ * Set PHY Paremeters, two steps to configure the GPR13,
+ * one write for rest of parameters, mask of first write
+ * is 0x07fffffe, and the other one write for setting
+ * the mpll_clk_en happens in imx_sata_clock_enable().
+ */
+ regmap_update_bits(imxpriv->gpr, IOMUXC_GPR13,
+ IMX6Q_GPR13_SATA_RX_EQ_VAL_MASK |
+ IMX6Q_GPR13_SATA_RX_LOS_LVL_MASK |
+ IMX6Q_GPR13_SATA_RX_DPLL_MODE_MASK |
+ IMX6Q_GPR13_SATA_SPD_MODE_MASK |
+ IMX6Q_GPR13_SATA_MPLL_SS_EN |
+ IMX6Q_GPR13_SATA_TX_ATTEN_MASK |
+ IMX6Q_GPR13_SATA_TX_BOOST_MASK |
+ IMX6Q_GPR13_SATA_TX_LVL_MASK |
+ IMX6Q_GPR13_SATA_MPLL_CLK_EN |
+ IMX6Q_GPR13_SATA_TX_EDGE_RATE,
+ IMX6Q_GPR13_SATA_RX_EQ_VAL_3_0_DB |
+ IMX6Q_GPR13_SATA_RX_LOS_LVL_SATA2M |
+ IMX6Q_GPR13_SATA_RX_DPLL_MODE_2P_4F |
+ IMX6Q_GPR13_SATA_SPD_MODE_3P0G |
+ IMX6Q_GPR13_SATA_MPLL_SS_EN |
+ IMX6Q_GPR13_SATA_TX_ATTEN_9_16 |
+ IMX6Q_GPR13_SATA_TX_BOOST_3_33_DB |
+ IMX6Q_GPR13_SATA_TX_LVL_1_025_V);
}
- /*
- * Set PHY Paremeters, two steps to configure the GPR13,
- * one write for rest of parameters, mask of first write
- * is 0x07ffffff, and the other one write for setting
- * the mpll_clk_en happens in imx_sata_clock_enable().
- */
- regmap_update_bits(imxpriv->gpr, IOMUXC_GPR13,
- IMX6Q_GPR13_SATA_RX_EQ_VAL_MASK |
- IMX6Q_GPR13_SATA_RX_LOS_LVL_MASK |
- IMX6Q_GPR13_SATA_RX_DPLL_MODE_MASK |
- IMX6Q_GPR13_SATA_SPD_MODE_MASK |
- IMX6Q_GPR13_SATA_MPLL_SS_EN |
- IMX6Q_GPR13_SATA_TX_ATTEN_MASK |
- IMX6Q_GPR13_SATA_TX_BOOST_MASK |
- IMX6Q_GPR13_SATA_TX_LVL_MASK |
- IMX6Q_GPR13_SATA_MPLL_CLK_EN |
- IMX6Q_GPR13_SATA_TX_EDGE_RATE,
- IMX6Q_GPR13_SATA_RX_EQ_VAL_3_0_DB |
- IMX6Q_GPR13_SATA_RX_LOS_LVL_SATA2M |
- IMX6Q_GPR13_SATA_RX_DPLL_MODE_2P_4F |
- IMX6Q_GPR13_SATA_SPD_MODE_3P0G |
- IMX6Q_GPR13_SATA_MPLL_SS_EN |
- IMX6Q_GPR13_SATA_TX_ATTEN_9_16 |
- IMX6Q_GPR13_SATA_TX_BOOST_3_33_DB |
- IMX6Q_GPR13_SATA_TX_LVL_1_025_V);
-
ret = platform_device_add_resources(ahci_pdev, res, 2);
if (ret)
goto err_out;
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-23 14:19:21 +0000