summaryrefslogtreecommitdiff
path: root/drivers/usb/gadget/ci13xxx_msm.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/usb/gadget/ci13xxx_msm.c')
-rw-r--r--drivers/usb/gadget/ci13xxx_msm.c134
1 files changed, 134 insertions, 0 deletions
diff --git a/drivers/usb/gadget/ci13xxx_msm.c b/drivers/usb/gadget/ci13xxx_msm.c
new file mode 100644
index 000000000000..139ac9419597
--- /dev/null
+++ b/drivers/usb/gadget/ci13xxx_msm.c
@@ -0,0 +1,134 @@
+/* Copyright (c) 2010, Code Aurora Forum. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/usb/msm_hsusb_hw.h>
+#include <linux/usb/ulpi.h>
+
+#include "ci13xxx_udc.c"
+
+#define MSM_USB_BASE (udc->regs)
+
+static irqreturn_t msm_udc_irq(int irq, void *data)
+{
+ return udc_irq();
+}
+
+static void ci13xxx_msm_notify_event(struct ci13xxx *udc, unsigned event)
+{
+ struct device *dev = udc->gadget.dev.parent;
+ int val;
+
+ switch (event) {
+ case CI13XXX_CONTROLLER_RESET_EVENT:
+ dev_dbg(dev, "CI13XXX_CONTROLLER_RESET_EVENT received\n");
+ writel(0, USB_AHBBURST);
+ writel(0, USB_AHBMODE);
+ break;
+ case CI13XXX_CONTROLLER_STOPPED_EVENT:
+ dev_dbg(dev, "CI13XXX_CONTROLLER_STOPPED_EVENT received\n");
+ /*
+ * Put the transceiver in non-driving mode. Otherwise host
+ * may not detect soft-disconnection.
+ */
+ val = otg_io_read(udc->transceiver, ULPI_FUNC_CTRL);
+ val &= ~ULPI_FUNC_CTRL_OPMODE_MASK;
+ val |= ULPI_FUNC_CTRL_OPMODE_NONDRIVING;
+ otg_io_write(udc->transceiver, val, ULPI_FUNC_CTRL);
+ break;
+ default:
+ dev_dbg(dev, "unknown ci13xxx_udc event\n");
+ break;
+ }
+}
+
+static struct ci13xxx_udc_driver ci13xxx_msm_udc_driver = {
+ .name = "ci13xxx_msm",
+ .flags = CI13XXX_REGS_SHARED |
+ CI13XXX_REQUIRE_TRANSCEIVER |
+ CI13XXX_PULLUP_ON_VBUS |
+ CI13XXX_DISABLE_STREAMING,
+
+ .notify_event = ci13xxx_msm_notify_event,
+};
+
+static int ci13xxx_msm_probe(struct platform_device *pdev)
+{
+ struct resource *res;
+ void __iomem *regs;
+ int irq;
+ int ret;
+
+ dev_dbg(&pdev->dev, "ci13xxx_msm_probe\n");
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ dev_err(&pdev->dev, "failed to get platform resource mem\n");
+ return -ENXIO;
+ }
+
+ regs = ioremap(res->start, resource_size(res));
+ if (!regs) {
+ dev_err(&pdev->dev, "ioremap failed\n");
+ return -ENOMEM;
+ }
+
+ ret = udc_probe(&ci13xxx_msm_udc_driver, &pdev->dev, regs);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "udc_probe failed\n");
+ goto iounmap;
+ }
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0) {
+ dev_err(&pdev->dev, "IRQ not found\n");
+ ret = -ENXIO;
+ goto udc_remove;
+ }
+
+ ret = request_irq(irq, msm_udc_irq, IRQF_SHARED, pdev->name, pdev);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "request_irq failed\n");
+ goto udc_remove;
+ }
+
+ pm_runtime_no_callbacks(&pdev->dev);
+ pm_runtime_enable(&pdev->dev);
+
+ return 0;
+
+udc_remove:
+ udc_remove();
+iounmap:
+ iounmap(regs);
+
+ return ret;
+}
+
+static struct platform_driver ci13xxx_msm_driver = {
+ .probe = ci13xxx_msm_probe,
+ .driver = { .name = "msm_hsusb", },
+};
+
+static int __init ci13xxx_msm_init(void)
+{
+ return platform_driver_register(&ci13xxx_msm_driver);
+}
+module_init(ci13xxx_msm_init);