Mirrors/u-boot
2
0
Fork 0
mirror of https://github.com/AsahiLinux/u-boot synced 2024-11-25 06:00:43 +00:00
Code Issues Projects Releases Packages Wiki Activity

usb: host: dwc2: add phy support

Browse source 
Use generic phy to initialize the PHY associated to the
DWC2 device and available in the device tree.

This patch don't added dependency because when CONFIG_PHY
is not activated, the generic PHY function are stubbed.

Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
This commit is contained in:
Patrick Delaunay 2020-04-27 15:29:58 +02:00 committed by Marek Vasut
parent 6f7917472e
commit e17a4bf198
1 changed files with 66 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

66
drivers/usb/host/dwc2.c
View file

@ -8,6 +8,7 @@
#include <cpu_func.h>
#include <dm.h>
#include <errno.h>
#include <generic-phy.h>
#include <usb.h>
#include <malloc.h>
#include <memalign.h>
@ -37,6 +38,7 @@ struct dwc2_priv {
#ifdef CONFIG_DM_REGULATOR
struct udevice *vbus_supply;
#endif
struct phy phy;
#else
uint8_t *aligned_buffer;
uint8_t *status_buffer;
@ -1322,13 +1324,71 @@ static int dwc2_usb_ofdata_to_platdata(struct udevice *dev)
return 0;
}
static int dwc2_setup_phy(struct udevice *dev)
{
struct dwc2_priv *priv = dev_get_priv(dev);
int ret;
ret = generic_phy_get_by_index(dev, 0, &priv->phy);
if (ret) {
if (ret == -ENOENT)
return 0; /* no PHY, nothing to do */
dev_err(dev, "Failed to get USB PHY: %d.\n", ret);
return ret;
}
ret = generic_phy_init(&priv->phy);
if (ret) {
dev_dbg(dev, "Failed to init USB PHY: %d.\n", ret);
return ret;
}
ret = generic_phy_power_on(&priv->phy);
if (ret) {
dev_dbg(dev, "Failed to power on USB PHY: %d.\n", ret);
generic_phy_exit(&priv->phy);
return ret;
}
return 0;
}
static int dwc2_shutdown_phy(struct udevice *dev)
{
struct dwc2_priv *priv = dev_get_priv(dev);
int ret;
/* PHY is not valid when generic_phy_get_by_index() = -ENOENT */
if (!generic_phy_valid(&priv->phy))
return 0; /* no PHY, nothing to do */
ret = generic_phy_power_off(&priv->phy);
if (ret) {
dev_dbg(dev, "Failed to power off USB PHY: %d.\n", ret);
return ret;
}
ret = generic_phy_exit(&priv->phy);
if (ret) {
dev_dbg(dev, "Failed to power off USB PHY: %d.\n", ret);
return ret;
}
return 0;
}
static int dwc2_usb_probe(struct udevice *dev)
{
struct dwc2_priv *priv = dev_get_priv(dev);
struct usb_bus_priv *bus_priv = dev_get_uclass_priv(dev);
int ret;
bus_priv->desc_before_addr = true;
ret = dwc2_setup_phy(dev);
if (ret)
return ret;
return dwc2_init_common(dev, priv);
}
@ -1341,6 +1401,12 @@ static int dwc2_usb_remove(struct udevice *dev)
if (ret)
return ret;
ret = dwc2_shutdown_phy(dev);
if (ret) {
dev_dbg(dev, "Failed to shutdown USB PHY: %d.\n", ret);
return ret;
}
dwc2_uninit_common(priv->regs);
reset_release_bulk(&priv->resets);