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Subject[PATCH 3/5] usb: exynos: add support for getting PHYs from the standard dt array
Date
Add the code for getting generic PHYs from standard device tree array
from the main controller device node. This is a first step in resolving
the conflict between Exynos EHCI/OHCI sub-nodes and generic USB device
bindings. Later the sub-nodes currently used for assigning PHYs to root
ports of the controller will be removed making a place for the generic
USB device bindings nodes.

Suggested-by: Måns Rullgård <mans@mansr.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
---
drivers/usb/host/ehci-exynos.c | 14 +++++++++++++-
drivers/usb/host/ohci-exynos.c | 14 +++++++++++++-
2 files changed, 26 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/host/ehci-exynos.c b/drivers/usb/host/ehci-exynos.c
index 3a29a1a8519c..2a551a807ec0 100644
--- a/drivers/usb/host/ehci-exynos.c
+++ b/drivers/usb/host/ehci-exynos.c
@@ -50,10 +50,22 @@ static int exynos_ehci_get_phy(struct device *dev,
{
struct device_node *child;
struct phy *phy;
- int phy_number;
+ int phy_number, num_phys;
int ret;

/* Get PHYs for the controller */
+ num_phys = of_count_phandle_with_args(dev->of_node, "phys",
+ "#phy-cells");
+ for (phy_number = 0; phy_number < num_phys; phy_number++) {
+ phy = devm_of_phy_get_by_index(dev, dev->of_node, phy_number);
+ if (IS_ERR(phy))
+ return PTR_ERR(phy);
+ exynos_ehci->phy[phy_number] = phy;
+ }
+ if (num_phys)
+ return 0;
+
+ /* Get PHYs using legacy bindings */
for_each_available_child_of_node(dev->of_node, child) {
ret = of_property_read_u32(child, "reg", &phy_number);
if (ret) {
diff --git a/drivers/usb/host/ohci-exynos.c b/drivers/usb/host/ohci-exynos.c
index 905c6317e0c3..195ea5fa021e 100644
--- a/drivers/usb/host/ohci-exynos.c
+++ b/drivers/usb/host/ohci-exynos.c
@@ -39,10 +39,22 @@ static int exynos_ohci_get_phy(struct device *dev,
{
struct device_node *child;
struct phy *phy;
- int phy_number;
+ int phy_number, num_phys;
int ret;

/* Get PHYs for the controller */
+ num_phys = of_count_phandle_with_args(dev->of_node, "phys",
+ "#phy-cells");
+ for (phy_number = 0; phy_number < num_phys; phy_number++) {
+ phy = devm_of_phy_get_by_index(dev, dev->of_node, phy_number);
+ if (IS_ERR(phy))
+ return PTR_ERR(phy);
+ exynos_ohci->phy[phy_number] = phy;
+ }
+ if (num_phys)
+ return 0;
+
+ /* Get PHYs using legacy bindings */
for_each_available_child_of_node(dev->of_node, child) {
ret = of_property_read_u32(child, "reg", &phy_number);
if (ret) {
--
2.17.1
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