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authorDaniel Tang <dt.tangr@gmail.com>2014-03-11 09:47:39 +0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-03-12 23:32:21 +0400
commit7b92e1ddb17f37caf37d4477483a62a425ba428f (patch)
tree1cc640792b4e237aa31952b118d7b3f8192a0776 /drivers/usb/chipidea
parentc844d6c884f372dcde158c84b61c373ebc529519 (diff)
downloadlinux-7b92e1ddb17f37caf37d4477483a62a425ba428f.tar.xz
usb: chipidea: add support for USB OTG controller on LSI Zevio SoCs
The USB controller in TI-NSPIRE calculators (LSI Zevio SoC) are based off either Freescale's USB OTG controller or the USB controller found in the IMX233, both of which are Chipidea compatible. This patch adds a device tree binding for the controller. Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Daniel Tang <dt.tangr@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/chipidea')
-rw-r--r--drivers/usb/chipidea/Makefile1
-rw-r--r--drivers/usb/chipidea/ci_hdrc_zevio.c72
2 files changed, 73 insertions, 0 deletions
diff --git a/drivers/usb/chipidea/Makefile b/drivers/usb/chipidea/Makefile
index 7345d2115af2..480bd4d5710a 100644
--- a/drivers/usb/chipidea/Makefile
+++ b/drivers/usb/chipidea/Makefile
@@ -10,6 +10,7 @@ ci_hdrc-$(CONFIG_USB_CHIPIDEA_DEBUG) += debug.o
# Glue/Bridge layers go here
obj-$(CONFIG_USB_CHIPIDEA) += ci_hdrc_msm.o
+obj-$(CONFIG_USB_CHIPIDEA) += ci_hdrc_zevio.o
# PCI doesn't provide stubs, need to check
ifneq ($(CONFIG_PCI),)
diff --git a/drivers/usb/chipidea/ci_hdrc_zevio.c b/drivers/usb/chipidea/ci_hdrc_zevio.c
new file mode 100644
index 000000000000..3bf6489ef5ec
--- /dev/null
+++ b/drivers/usb/chipidea/ci_hdrc_zevio.c
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2013 Daniel Tang <tangrs@tangrs.id.au>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2, as
+ * published by the Free Software Foundation.
+ *
+ * Based off drivers/usb/chipidea/ci_hdrc_msm.c
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/usb/gadget.h>
+#include <linux/usb/chipidea.h>
+
+#include "ci.h"
+
+static struct ci_hdrc_platform_data ci_hdrc_zevio_platdata = {
+ .name = "ci_hdrc_zevio",
+ .flags = CI_HDRC_REGS_SHARED,
+ .capoffset = DEF_CAPOFFSET,
+};
+
+static int ci_hdrc_zevio_probe(struct platform_device *pdev)
+{
+ struct platform_device *ci_pdev;
+
+ dev_dbg(&pdev->dev, "ci_hdrc_zevio_probe\n");
+
+ ci_pdev = ci_hdrc_add_device(&pdev->dev,
+ pdev->resource, pdev->num_resources,
+ &ci_hdrc_zevio_platdata);
+
+ if (IS_ERR(ci_pdev)) {
+ dev_err(&pdev->dev, "ci_hdrc_add_device failed!\n");
+ return PTR_ERR(ci_pdev);
+ }
+
+ platform_set_drvdata(pdev, ci_pdev);
+
+ return 0;
+}
+
+static int ci_hdrc_zevio_remove(struct platform_device *pdev)
+{
+ struct platform_device *ci_pdev = platform_get_drvdata(pdev);
+
+ ci_hdrc_remove_device(ci_pdev);
+
+ return 0;
+}
+
+static const struct of_device_id ci_hdrc_zevio_dt_ids[] = {
+ { .compatible = "lsi,zevio-usb", },
+ { /* sentinel */ }
+};
+
+static struct platform_driver ci_hdrc_zevio_driver = {
+ .probe = ci_hdrc_zevio_probe,
+ .remove = ci_hdrc_zevio_remove,
+ .driver = {
+ .name = "zevio_usb",
+ .owner = THIS_MODULE,
+ .of_match_table = ci_hdrc_zevio_dt_ids,
+ },
+};
+
+MODULE_DEVICE_TABLE(of, ci_hdrc_zevio_dt_ids);
+module_platform_driver(ci_hdrc_zevio_driver);
+
+MODULE_LICENSE("GPL v2");