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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-03-25 03:53:42 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-03-25 03:53:42 -0300
commit03dd4cb26d967f9588437b0fc9cc0e8353322bb7 (patch)
treefa581f6dc1c0596391690d1f67eceef3af8246dc /drivers/phy/phy-sun4i-usb.c
parentd4e493caf788ef44982e131ff9c786546904d934 (diff)
Linux-libre 4.5-gnu
Diffstat (limited to 'drivers/phy/phy-sun4i-usb.c')
-rw-r--r--drivers/phy/phy-sun4i-usb.c158
1 files changed, 109 insertions, 49 deletions
diff --git a/drivers/phy/phy-sun4i-usb.c b/drivers/phy/phy-sun4i-usb.c
index b12964b70..bae54f7a1 100644
--- a/drivers/phy/phy-sun4i-usb.c
+++ b/drivers/phy/phy-sun4i-usb.c
@@ -32,6 +32,7 @@
#include <linux/mutex.h>
#include <linux/of.h>
#include <linux/of_address.h>
+#include <linux/of_device.h>
#include <linux/of_gpio.h>
#include <linux/phy/phy.h>
#include <linux/phy/phy-sun4i-usb.h>
@@ -46,6 +47,9 @@
#define REG_PHYBIST 0x08
#define REG_PHYTUNE 0x0c
#define REG_PHYCTL_A33 0x10
+#define REG_PHY_UNK_H3 0x20
+
+#define REG_PMU_UNK_H3 0x10
#define PHYCTL_DATA BIT(7)
@@ -79,7 +83,7 @@
#define PHY_DISCON_TH_SEL 0x2a
#define PHY_SQUELCH_DETECT 0x3c
-#define MAX_PHYS 3
+#define MAX_PHYS 4
/*
* Note do not raise the debounce time, we must report Vusb high within 100ms
@@ -88,12 +92,24 @@
#define DEBOUNCE_TIME msecs_to_jiffies(50)
#define POLL_TIME msecs_to_jiffies(250)
+enum sun4i_usb_phy_type {
+ sun4i_a10_phy,
+ sun8i_a33_phy,
+ sun8i_h3_phy,
+};
+
+struct sun4i_usb_phy_cfg {
+ int num_phys;
+ enum sun4i_usb_phy_type type;
+ u32 disc_thresh;
+ u8 phyctl_offset;
+ bool dedicated_clocks;
+};
+
struct sun4i_usb_phy_data {
void __iomem *base;
+ const struct sun4i_usb_phy_cfg *cfg;
struct mutex mutex;
- int num_phys;
- u32 disc_thresh;
- bool has_a33_phyctl;
struct sun4i_usb_phy {
struct phy *phy;
void __iomem *pmu;
@@ -159,17 +175,14 @@ static void sun4i_usb_phy_write(struct sun4i_usb_phy *phy, u32 addr, u32 data,
{
struct sun4i_usb_phy_data *phy_data = to_sun4i_usb_phy_data(phy);
u32 temp, usbc_bit = BIT(phy->index * 2);
- void *phyctl;
+ void *phyctl = phy_data->base + phy_data->cfg->phyctl_offset;
int i;
mutex_lock(&phy_data->mutex);
- if (phy_data->has_a33_phyctl) {
- phyctl = phy_data->base + REG_PHYCTL_A33;
+ if (phy_data->cfg->type == sun8i_a33_phy) {
/* A33 needs us to set phyctl to 0 explicitly */
writel(0, phyctl);
- } else {
- phyctl = phy_data->base + REG_PHYCTL_A10;
}
for (i = 0; i < len; i++) {
@@ -230,6 +243,7 @@ static int sun4i_usb_phy_init(struct phy *_phy)
struct sun4i_usb_phy *phy = phy_get_drvdata(_phy);
struct sun4i_usb_phy_data *data = to_sun4i_usb_phy_data(phy);
int ret;
+ u32 val;
ret = clk_prepare_enable(phy->clk);
if (ret)
@@ -241,15 +255,26 @@ static int sun4i_usb_phy_init(struct phy *_phy)
return ret;
}
- /* Enable USB 45 Ohm resistor calibration */
- if (phy->index == 0)
- sun4i_usb_phy_write(phy, PHY_RES45_CAL_EN, 0x01, 1);
+ if (data->cfg->type == sun8i_h3_phy) {
+ if (phy->index == 0) {
+ val = readl(data->base + REG_PHY_UNK_H3);
+ writel(val & ~1, data->base + REG_PHY_UNK_H3);
+ }
- /* Adjust PHY's magnitude and rate */
- sun4i_usb_phy_write(phy, PHY_TX_AMPLITUDE_TUNE, 0x14, 5);
+ val = readl(phy->pmu + REG_PMU_UNK_H3);
+ writel(val & ~2, phy->pmu + REG_PMU_UNK_H3);
+ } else {
+ /* Enable USB 45 Ohm resistor calibration */
+ if (phy->index == 0)
+ sun4i_usb_phy_write(phy, PHY_RES45_CAL_EN, 0x01, 1);
- /* Disconnect threshold adjustment */
- sun4i_usb_phy_write(phy, PHY_DISCON_TH_SEL, data->disc_thresh, 2);
+ /* Adjust PHY's magnitude and rate */
+ sun4i_usb_phy_write(phy, PHY_TX_AMPLITUDE_TUNE, 0x14, 5);
+
+ /* Disconnect threshold adjustment */
+ sun4i_usb_phy_write(phy, PHY_DISCON_TH_SEL,
+ data->cfg->disc_thresh, 2);
+ }
sun4i_usb_phy_passby(phy, 1);
@@ -476,7 +501,7 @@ static struct phy *sun4i_usb_phy_xlate(struct device *dev,
{
struct sun4i_usb_phy_data *data = dev_get_drvdata(dev);
- if (args->args[0] >= data->num_phys)
+ if (args->args[0] >= data->cfg->num_phys)
return ERR_PTR(-ENODEV);
return data->phys[args->args[0]].phy;
@@ -511,7 +536,6 @@ static int sun4i_usb_phy_probe(struct platform_device *pdev)
struct device *dev = &pdev->dev;
struct device_node *np = dev->of_node;
struct phy_provider *phy_provider;
- bool dedicated_clocks;
struct resource *res;
int i, ret;
@@ -522,29 +546,9 @@ static int sun4i_usb_phy_probe(struct platform_device *pdev)
mutex_init(&data->mutex);
INIT_DELAYED_WORK(&data->detect, sun4i_usb_phy0_id_vbus_det_scan);
dev_set_drvdata(dev, data);
-
- if (of_device_is_compatible(np, "allwinner,sun5i-a13-usb-phy") ||
- of_device_is_compatible(np, "allwinner,sun8i-a23-usb-phy") ||
- of_device_is_compatible(np, "allwinner,sun8i-a33-usb-phy"))
- data->num_phys = 2;
- else
- data->num_phys = 3;
-
- if (of_device_is_compatible(np, "allwinner,sun5i-a13-usb-phy") ||
- of_device_is_compatible(np, "allwinner,sun7i-a20-usb-phy"))
- data->disc_thresh = 2;
- else
- data->disc_thresh = 3;
-
- if (of_device_is_compatible(np, "allwinner,sun6i-a31-usb-phy") ||
- of_device_is_compatible(np, "allwinner,sun8i-a23-usb-phy") ||
- of_device_is_compatible(np, "allwinner,sun8i-a33-usb-phy"))
- dedicated_clocks = true;
- else
- dedicated_clocks = false;
-
- if (of_device_is_compatible(np, "allwinner,sun8i-a33-usb-phy"))
- data->has_a33_phyctl = true;
+ data->cfg = of_device_get_match_data(dev);
+ if (!data->cfg)
+ return -EINVAL;
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "phy_ctrl");
data->base = devm_ioremap_resource(dev, res);
@@ -590,7 +594,7 @@ static int sun4i_usb_phy_probe(struct platform_device *pdev)
}
}
- for (i = 0; i < data->num_phys; i++) {
+ for (i = 0; i < data->cfg->num_phys; i++) {
struct sun4i_usb_phy *phy = data->phys + i;
char name[16];
@@ -602,7 +606,7 @@ static int sun4i_usb_phy_probe(struct platform_device *pdev)
phy->vbus = NULL;
}
- if (dedicated_clocks)
+ if (data->cfg->dedicated_clocks)
snprintf(name, sizeof(name), "usb%d_phy", i);
else
strlcpy(name, "usb_phy", sizeof(name));
@@ -689,13 +693,69 @@ static int sun4i_usb_phy_probe(struct platform_device *pdev)
return 0;
}
+static const struct sun4i_usb_phy_cfg sun4i_a10_cfg = {
+ .num_phys = 3,
+ .type = sun4i_a10_phy,
+ .disc_thresh = 3,
+ .phyctl_offset = REG_PHYCTL_A10,
+ .dedicated_clocks = false,
+};
+
+static const struct sun4i_usb_phy_cfg sun5i_a13_cfg = {
+ .num_phys = 2,
+ .type = sun4i_a10_phy,
+ .disc_thresh = 2,
+ .phyctl_offset = REG_PHYCTL_A10,
+ .dedicated_clocks = false,
+};
+
+static const struct sun4i_usb_phy_cfg sun6i_a31_cfg = {
+ .num_phys = 3,
+ .type = sun4i_a10_phy,
+ .disc_thresh = 3,
+ .phyctl_offset = REG_PHYCTL_A10,
+ .dedicated_clocks = true,
+};
+
+static const struct sun4i_usb_phy_cfg sun7i_a20_cfg = {
+ .num_phys = 3,
+ .type = sun4i_a10_phy,
+ .disc_thresh = 2,
+ .phyctl_offset = REG_PHYCTL_A10,
+ .dedicated_clocks = false,
+};
+
+static const struct sun4i_usb_phy_cfg sun8i_a23_cfg = {
+ .num_phys = 2,
+ .type = sun4i_a10_phy,
+ .disc_thresh = 3,
+ .phyctl_offset = REG_PHYCTL_A10,
+ .dedicated_clocks = true,
+};
+
+static const struct sun4i_usb_phy_cfg sun8i_a33_cfg = {
+ .num_phys = 2,
+ .type = sun8i_a33_phy,
+ .disc_thresh = 3,
+ .phyctl_offset = REG_PHYCTL_A33,
+ .dedicated_clocks = true,
+};
+
+static const struct sun4i_usb_phy_cfg sun8i_h3_cfg = {
+ .num_phys = 4,
+ .type = sun8i_h3_phy,
+ .disc_thresh = 3,
+ .dedicated_clocks = true,
+};
+
static const struct of_device_id sun4i_usb_phy_of_match[] = {
- { .compatible = "allwinner,sun4i-a10-usb-phy" },
- { .compatible = "allwinner,sun5i-a13-usb-phy" },
- { .compatible = "allwinner,sun6i-a31-usb-phy" },
- { .compatible = "allwinner,sun7i-a20-usb-phy" },
- { .compatible = "allwinner,sun8i-a23-usb-phy" },
- { .compatible = "allwinner,sun8i-a33-usb-phy" },
+ { .compatible = "allwinner,sun4i-a10-usb-phy", .data = &sun4i_a10_cfg },
+ { .compatible = "allwinner,sun5i-a13-usb-phy", .data = &sun5i_a13_cfg },
+ { .compatible = "allwinner,sun6i-a31-usb-phy", .data = &sun6i_a31_cfg },
+ { .compatible = "allwinner,sun7i-a20-usb-phy", .data = &sun7i_a20_cfg },
+ { .compatible = "allwinner,sun8i-a23-usb-phy", .data = &sun8i_a23_cfg },
+ { .compatible = "allwinner,sun8i-a33-usb-phy", .data = &sun8i_a33_cfg },
+ { .compatible = "allwinner,sun8i-h3-usb-phy", .data = &sun8i_h3_cfg },
{ },
};
MODULE_DEVICE_TABLE(of, sun4i_usb_phy_of_match);