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authorUlrich Hecht <ulrich.hecht@gmail.com>2014-07-10 09:53:59 +0200
committerFelipe Balbi <balbi@ti.com>2014-07-16 10:06:32 -0500
commit8ecef00fe1f33658ee36e902dba6850b51312073 (patch)
tree208ab3f29e228e55fabac17423413d528152f7fa /drivers/usb/renesas_usbhs/rcar2.c
parentf2267089ea17fa97b796b1b4247e3f8957655df3 (diff)
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usb: renesas_usbhs: add R-Car Gen. 2 init and power control
In preparation for DT conversion to reduce reliance on platform device callbacks. Signed-off-by: Ulrich Hecht <ulrich.hecht+renesas@gmail.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/renesas_usbhs/rcar2.c')
-rw-r--r--drivers/usb/renesas_usbhs/rcar2.c77
1 files changed, 77 insertions, 0 deletions
diff --git a/drivers/usb/renesas_usbhs/rcar2.c b/drivers/usb/renesas_usbhs/rcar2.c
new file mode 100644
index 000000000000..e6b9dcc1c289
--- /dev/null
+++ b/drivers/usb/renesas_usbhs/rcar2.c
@@ -0,0 +1,77 @@
+/*
+ * Renesas USB driver R-Car Gen. 2 initialization and power control
+ *
+ * Copyright (C) 2014 Ulrich Hecht
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <linux/gpio.h>
+#include <linux/of_gpio.h>
+#include <linux/platform_data/gpio-rcar.h>
+#include <linux/usb/phy.h>
+#include "common.h"
+#include "rcar2.h"
+
+static int usbhs_rcar2_hardware_init(struct platform_device *pdev)
+{
+ struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
+ struct usb_phy *phy;
+
+ phy = usb_get_phy_dev(&pdev->dev, 0);
+ if (IS_ERR(phy))
+ return PTR_ERR(phy);
+
+ priv->phy = phy;
+ return 0;
+}
+
+static int usbhs_rcar2_hardware_exit(struct platform_device *pdev)
+{
+ struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
+
+ if (!priv->phy)
+ return 0;
+
+ usb_put_phy(priv->phy);
+ priv->phy = NULL;
+
+ return 0;
+}
+
+static int usbhs_rcar2_power_ctrl(struct platform_device *pdev,
+ void __iomem *base, int enable)
+{
+ struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
+
+ if (!priv->phy)
+ return -ENODEV;
+
+ if (enable) {
+ int retval = usb_phy_init(priv->phy);
+
+ if (!retval)
+ retval = usb_phy_set_suspend(priv->phy, 0);
+ return retval;
+ }
+
+ usb_phy_set_suspend(priv->phy, 1);
+ usb_phy_shutdown(priv->phy);
+ return 0;
+}
+
+static int usbhs_rcar2_get_id(struct platform_device *pdev)
+{
+ return USBHS_GADGET;
+}
+
+const struct renesas_usbhs_platform_callback usbhs_rcar2_ops = {
+ .hardware_init = usbhs_rcar2_hardware_init,
+ .hardware_exit = usbhs_rcar2_hardware_exit,
+ .power_ctrl = usbhs_rcar2_power_ctrl,
+ .get_id = usbhs_rcar2_get_id,
+};