Add support for the phy-rcar-gen2-usb driver to be probed from device tree.
Signed-off-by: Ben Dooks <ben.do...@codethink.co.uk>
Reviewed-by: Ian Molton <ian.mol...@codethink.co.uk>
---
Fixes from v1:
- use of_property_reasd-bool()
- remove unused of_id variable
Cc: linux-usb@vger.kernel.org
Cc: linux...@vger.kernel.org
Cc: Magnus Damm <magnus.d...@gmail.com>
Cc: Simon Horman <ho...@verge.net.au>
Cc: devicet...@vger.kernel.org
---
drivers/usb/phy/phy-rcar-gen2-usb.c | 31 ++++++++++++++++++++++++++-----
1 file changed, 26 insertions(+), 5 deletions(-)
diff --git a/drivers/usb/phy/phy-rcar-gen2-usb.c
b/drivers/usb/phy/phy-rcar-gen2-usb.c
index db3ab34..d146388 100644
--- a/drivers/usb/phy/phy-rcar-gen2-usb.c
+++ b/drivers/usb/phy/phy-rcar-gen2-usb.c
@@ -15,6 +15,7 @@
#include <linux/module.h>
#include <linux/platform_data/usb-rcar-gen2-phy.h>
#include <linux/platform_device.h>
+#include <linux/of_device.h>
#include <linux/spinlock.h>
#include <linux/usb/otg.h>
@@ -167,6 +168,12 @@ out:
spin_unlock_irqrestore(&priv->lock, flags);
}
+static struct of_device_id rcar_gen2_usb_phy_ofmatch[] = {
+ { .compatible = "renesas,usb-phy-r8a7790", },
+ { .compatible = "renesas,rcar-gen2-usb-phy", },
+ { },
+};
+
static int rcar_gen2_usb_phy_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
@@ -178,7 +185,7 @@ static int rcar_gen2_usb_phy_probe(struct platform_device
*pdev)
int retval;
pdata = dev_get_platdata(&pdev->dev);
- if (!pdata) {
+ if (!pdata && !dev->of_node) {
dev_err(dev, "No platform data\n");
return -EINVAL;
}
@@ -203,16 +210,29 @@ static int rcar_gen2_usb_phy_probe(struct platform_device
*pdev)
spin_lock_init(&priv->lock);
priv->clk = clk;
priv->base = base;
- priv->ugctrl2 = pdata->chan0_pci ?
- USBHS_UGCTRL2_USB0_PCI : USBHS_UGCTRL2_USB0_HS;
- priv->ugctrl2 |= pdata->chan2_pci ?
- USBHS_UGCTRL2_USB2_PCI : USBHS_UGCTRL2_USB2_SS;
priv->phy.dev = dev;
priv->phy.label = dev_name(dev);
priv->phy.init = rcar_gen2_usb_phy_init;
priv->phy.shutdown = rcar_gen2_usb_phy_shutdown;
priv->phy.set_suspend = rcar_gen2_usb_phy_set_suspend;
+ if (of_id) {
+ if (of_property_read_bool(dev->of_node, "renesas,usb0-hs"))
+ priv->ugctrl2 = USBHS_UGCTRL2_USB0_HS;
+ else
+ priv->ugctrl2 = USBHS_UGCTRL2_USB0_PCI;
+
+ if (of_property_read_bool(dev->of_node, "renesas,usb2-ss"))
+ priv->ugctrl2 |= USBHS_UGCTRL2_USB2_SS;
+ else
+ priv->ugctrl2 |= USBHS_UGCTRL2_USB2_PCI;
+ } else {
+ priv->ugctrl2 = pdata->chan0_pci ?
+ USBHS_UGCTRL2_USB0_PCI : USBHS_UGCTRL2_USB0_HS;
+ priv->ugctrl2 |= pdata->chan2_pci ?
+ USBHS_UGCTRL2_USB2_PCI : USBHS_UGCTRL2_USB2_SS;
+ }
+
retval = usb_add_phy(&priv->phy, USB_PHY_TYPE_USB2);
if (retval < 0) {
dev_err(dev, "Failed to add USB phy\n");
@@ -236,6 +256,7 @@ static int rcar_gen2_usb_phy_remove(struct platform_device
*pdev)
static struct platform_driver rcar_gen2_usb_phy_driver = {
.driver = {
.name = "usb_phy_rcar_gen2",
+ .of_match_table = rcar_gen2_usb_phy_ofmatch,
},
.probe = rcar_gen2_usb_phy_probe,
.remove = rcar_gen2_usb_phy_remove,
--
1.8.5.2
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