On 21/06/17 10:00, Jiancheng Xue wrote:
From: Pengcheng Li <lpc.li@xxxxxxxxxxxxx>
Add inno-usb2-phy driver for hi3798cv200 SoC.
Signed-off-by: Pengcheng Li <lpc.li@xxxxxxxxxxxxx>
Signed-off-by: Jiancheng Xue <xuejiancheng@xxxxxxxxxxxxx>
---
drivers/phy/Kconfig | 10 ++
drivers/phy/Makefile | 1 +
drivers/phy/phy-hisi-inno-usb2.c | 287 +++++++++++++++++++++++++++++++++++++++
3 files changed, 298 insertions(+)
create mode 100644 drivers/phy/phy-hisi-inno-usb2.c
...
diff --git a/drivers/phy/phy-hisi-inno-usb2.c b/drivers/phy/phy-hisi-inno-usb2.c
new file mode 100644
index 0000000..582c500
--- /dev/null
+++ b/drivers/phy/phy-hisi-inno-usb2.c
@@ -0,0 +1,287 @@
> ...> +static int hisi_inno_phy_of_get_ports(struct device *dev,
+ struct hisi_inno_phy_priv *priv)
+{
+ struct device_node *node = dev->of_node;
+ struct device_node *child;
+ int port = 0;
+ int ret;
+
+ priv->port_num = of_get_child_count(node);
+ if (priv->port_num > MAX_PORTS) {
+ dev_err(dev, "too many ports : %d (max = %d)\n",
+ priv->port_num, MAX_PORTS);
+ return -EINVAL;
+ }
+
+ priv->ports = devm_kcalloc(dev, priv->port_num,
+ sizeof(struct hisi_inno_phy_port), GFP_KERNEL);
+ if (!priv->ports)
+ return -ENOMEM;
+
+ for_each_child_of_node(node, child) {
+ struct hisi_inno_phy_port *phy_port = &priv->ports[port];
+
+ phy_port->utmi_clk = devm_get_clk_from_child(dev, child, NULL);
+ if (IS_ERR(phy_port->utmi_clk)) {
+ ret = PTR_ERR(phy_port->utmi_clk);
+ goto fail;
+ }
+
+ phy_port->port_rst = of_reset_control_get_exclusive(child, "port_rst"); > + if (IS_ERR(phy_port->port_rst)) {
+ ret = PTR_ERR(phy_port->port_rst);
+ goto fail;
+ }
+
+ phy_port->utmi_rst = of_reset_control_get_exclusive(child, "utmi_rst");
+ if (IS_ERR(phy_port->utmi_rst)) {
+ ret = PTR_ERR(phy_port->utmi_rst);
+ reset_control_put(phy_port->port_rst);
+ goto fail;
+ }
+ port++;
+ }
+
+ return 0;
+
+fail:
+ while (--port >= 0) {
+ struct hisi_inno_phy_port *phy_port = &priv->ports[port];
+
+ reset_control_put(phy_port->utmi_rst);
+ reset_control_put(phy_port->port_rst) > + clk_put(phy_port->utmi_clk);
clk_put() should not be needed here.
+ }
Do we also need clean up code like this in a remove callback?
Daniel.
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