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Subject[PATCH 1/3] usb: chipidea: add support for USB OTG controller on LSI Zevio SoCs
Date
From: Daniel Tang <dt.tangr@gmail.com>

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: Daniel Tang <dt.tangr@gmail.com>
---
drivers/usb/chipidea/Makefile | 1 +
drivers/usb/chipidea/ci_hdrc_zevio.c | 72 ++++++++++++++++++++++++++++++++++
2 files changed, 73 insertions(+)
create mode 100644 drivers/usb/chipidea/ci_hdrc_zevio.c

diff --git a/drivers/usb/chipidea/Makefile b/drivers/usb/chipidea/Makefile
index a99d980..7635407 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 0000000..3bf6489
--- /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");
--
1.7.10.4


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