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dwc3: add support for Amlogic A1 family

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Now the driver supports also A1 phy layer.

Signed-off-by: Alexey Romanov <avromanov@salutedevices.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20231005085434.74755-8-avromanov@salutedevices.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
This commit is contained in:
Alexey Romanov 2023-10-05 11:54:28 +03:00 • committed by Neil Armstrong
parent 7db7cce356
commit 3ba8ea4b46
1 changed files with 69 additions and 10 deletions
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79
drivers/usb/dwc3/dwc3-meson-g12a.c
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@ -29,6 +29,7 @@
#include <linux/bitfield.h>
#include <linux/bitops.h>
#include <linux/compat.h>
#include <dt-bindings/clock/amlogic,a1-peripherals-clkc.h>
/* USB2 Ports Control Registers */
@ -103,10 +104,22 @@ enum {
PHY_COUNT,
};
static const char *phy_names[PHY_COUNT] = {
static const char *const dwc3_meson_g12a_phy_names[] = {
"usb2-phy0", "usb2-phy1", "usb3-phy0",
};
static const char *const dwc3_meson_a1_phy_names[] = {
"usb2-phy0", "usb2-phy1"
};
struct dwc3_meson_g12a;
struct dwc3_meson_g12a_drvdata {
const char *const *phy_names;
unsigned int phy_cnt;
int (*clk_init)(struct dwc3_meson_g12a *priv);
};
struct dwc3_meson_g12a {
struct udevice *dev;
struct regmap *regmap;
@ -120,6 +133,7 @@ struct dwc3_meson_g12a {
#if CONFIG_IS_ENABLED(DM_REGULATOR)
struct udevice *vbus_supply;
#endif
struct dwc3_meson_g12a_drvdata *drvdata;
};
#define U2P_REG_SIZE 0x20
@ -294,10 +308,11 @@ int dwc3_meson_g12a_force_mode(struct udevice *dev, enum usb_dr_mode mode)
static int dwc3_meson_g12a_get_phys(struct dwc3_meson_g12a *priv)
{
struct dwc3_meson_g12a_drvdata *data = priv->drvdata;
int i, ret;
for (i = 0 ; i < PHY_COUNT ; ++i) {
ret = generic_phy_get_by_name(priv->dev, phy_names[i],
for (i = 0 ; i < data->phy_cnt; ++i) {
ret = generic_phy_get_by_name(priv->dev, data->phy_names[i],
&priv->phys[i]);
if (ret == -ENOENT || ret == -ENODATA)
continue;
@ -355,18 +370,36 @@ static int dwc3_meson_g12a_clk_init(struct dwc3_meson_g12a *priv)
return 0;
}
static int dwc3_meson_a1_clk_init(struct dwc3_meson_g12a *priv)
{
int ret;
ret = clk_get_by_name(priv->dev, "usb_bus", &priv->clk);
if (ret)
return ret;
ret = clk_enable(&priv->clk);
if (ret)
return ret;
return 0;
}
static int dwc3_meson_g12a_probe(struct udevice *dev)
{
struct dwc3_meson_g12a *priv = dev_get_plat(dev);
struct dwc3_meson_g12a_drvdata *data =
(struct dwc3_meson_g12a_drvdata *)dev_get_driver_data(dev);
int ret, i;
priv->drvdata = data;
priv->dev = dev;
ret = regmap_init_mem(dev_ofnode(dev), &priv->regmap);
if (ret)
return ret;
ret = dwc3_meson_g12a_clk_init(priv);
ret = data->clk_init(priv);
if (ret)
return ret;
@ -399,7 +432,7 @@ static int dwc3_meson_g12a_probe(struct udevice *dev)
if (ret)
return ret;
for (i = 0 ; i < PHY_COUNT ; ++i) {
for (i = 0 ; i < data->phy_cnt; ++i) {
if (!priv->phys[i].dev)
continue;
@ -408,7 +441,7 @@ static int dwc3_meson_g12a_probe(struct udevice *dev)
goto err_phy_init;
}
for (i = 0; i < PHY_COUNT; ++i) {
for (i = 0; i < data->phy_cnt; ++i) {
if (!priv->phys[i].dev)
continue;
@ -420,7 +453,7 @@ static int dwc3_meson_g12a_probe(struct udevice *dev)
return 0;
err_phy_init:
for (i = 0 ; i < PHY_COUNT ; ++i) {
for (i = 0 ; i < data->phy_cnt ; ++i) {
if (!priv->phys[i].dev)
continue;
@ -433,20 +466,21 @@ err_phy_init:
static int dwc3_meson_g12a_remove(struct udevice *dev)
{
struct dwc3_meson_g12a *priv = dev_get_plat(dev);
struct dwc3_meson_g12a_drvdata *data = priv->drvdata;
int i;
reset_release_all(&priv->reset, 1);
clk_release_all(&priv->clk, 1);
for (i = 0; i < PHY_COUNT; ++i) {
for (i = 0; i < data->phy_cnt; ++i) {
if (!priv->phys[i].dev)
continue;
generic_phy_power_off(&priv->phys[i]);
}
for (i = 0 ; i < PHY_COUNT ; ++i) {
for (i = 0 ; i < data->phy_cnt; ++i) {
if (!priv->phys[i].dev)
continue;
@ -456,11 +490,26 @@ static int dwc3_meson_g12a_remove(struct udevice *dev)
return dm_scan_fdt_dev(dev);
}
static const struct dwc3_meson_g12a_drvdata meson_g12a_drvdata = {
.phy_names = dwc3_meson_g12a_phy_names,
.phy_cnt = ARRAY_SIZE(dwc3_meson_g12a_phy_names),
.clk_init = dwc3_meson_g12a_clk_init,
};
static const struct dwc3_meson_g12a_drvdata meson_a1_drvdata = {
.phy_names = dwc3_meson_a1_phy_names,
.phy_cnt = ARRAY_SIZE(dwc3_meson_a1_phy_names),
.clk_init = dwc3_meson_a1_clk_init,
};
static int dwc3_meson_g12a_child_pre_probe(struct udevice *dev)
{
if (ofnode_device_is_compatible(dev_ofnode(dev), "amlogic,meson-g12a-usb"))
return dwc3_meson_g12a_force_mode(dev->parent, USB_DR_MODE_PERIPHERAL);
if (ofnode_device_is_compatible(dev_ofnode(dev), "amlogic,meson-a1-usb"))
return dwc3_meson_g12a_force_mode(dev->parent, USB_DR_MODE_PERIPHERAL);
return 0;
}
@ -469,11 +518,21 @@ static int dwc3_meson_g12a_child_post_remove(struct udevice *dev)
if (ofnode_device_is_compatible(dev_ofnode(dev), "amlogic,meson-g12a-usb"))
return dwc3_meson_g12a_force_mode(dev->parent, USB_DR_MODE_HOST);
if (ofnode_device_is_compatible(dev_ofnode(dev), "amlogic,meson-a1-usb"))
return dwc3_meson_g12a_force_mode(dev->parent, USB_DR_MODE_HOST);
return 0;
}
static const struct udevice_id dwc3_meson_g12a_ids[] = {
{ .compatible = "amlogic,meson-g12a-usb-ctrl" },
{
.compatible = "amlogic,meson-g12a-usb-ctrl",
.data = (ulong)&meson_g12a_drvdata,
},
{
.compatible = "amlogic,meson-a1-usb-ctrl",
.data = (ulong)&meson_a1_drvdata,
},
{ }
};