[PATCH 06/11] MXS: Add small registration glue for ci13xxx_udc

[Marek Vasut]

This patch adds small registration glue for the ci13xxx_udc that is compatible
with the imx-otg driver.

Signed-off-by: Marek Vasut <marex at denx.de>
Cc: Chen Peter-B29397 <B29397 at freescale.com>
Cc: Detlev Zundel <dzu at denx.de>
Cc: Fabio Estevam <festevam at gmail.com>
Cc: Li Frank-B20596 <B20596 at freescale.com>
Cc: Lin Tony-B19295 <B19295 at freescale.com>
Cc: Linux USB <linux-usb at vger.kernel.org>
Cc: Sascha Hauer <s.hauer at pengutronix.de>
Cc: Shawn Guo <shawn.guo at freescale.com>
Cc: Shawn Guo <shawn.guo at linaro.org>
Cc: Stefano Babic <sbabic at denx.de>
Cc: Subodh Nijsure <snijsure at grid-net.com>
Cc: Tony Lin <tony.lin at freescale.com>
Cc: Wolfgang Denk <wd at denx.de>
---
 drivers/usb/gadget/Kconfig       |   17 ++++++++++
 drivers/usb/gadget/Makefile      |    1 +
 drivers/usb/gadget/ci13xxx_mxs.c |   67 ++++++++++++++++++++++++++++++++++++++
 3 files changed, 85 insertions(+)
 create mode 100644 drivers/usb/gadget/ci13xxx_mxs.c

diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index 2633f75..1fa6b0d 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -494,6 +494,23 @@ config USB_CI13XXX_MSM
 	  dynamically linked module called "ci13xxx_msm" and force all
 	  gadget drivers to also be dynamically linked.
 
+config USB_CI13XXX_MXS
+	tristate "MIPS USB CI13xxx for i.MX23/28"
+	depends on ARCH_MXS
+	select USB_GADGET_DUALSPEED
+	select USB_IMX_COMPOSITE
+	help
+	  i.MX SoC has chipidea USB controller.  This driver uses
+	  ci13xxx_udc core.
+	  This driver depends on OTG driver for PHY initialization,
+	  clock management, powering up VBUS, and power management.
+	  This driver is not supported on boards like trout which
+	  has an external PHY.
+
+	  Say "y" to link the driver statically, or "m" to build a
+	  dynamically linked module called "ci13xxx_mxs" and force all
+	  gadget drivers to also be dynamically linked.
+
 #
 # LAST -- dummy/emulated controller
 #
diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile
index b7f6eef..1f159a9 100644
--- a/drivers/usb/gadget/Makefile
+++ b/drivers/usb/gadget/Makefile
@@ -30,6 +30,7 @@ obj-$(CONFIG_USB_EG20T)		+= pch_udc.o
 obj-$(CONFIG_USB_MV_UDC)	+= mv_udc.o
 mv_udc-y			:= mv_udc_core.o
 obj-$(CONFIG_USB_CI13XXX_MSM)	+= ci13xxx_msm.o
+obj-$(CONFIG_USB_CI13XXX_MXS)	+= ci13xxx_mxs.o
 obj-$(CONFIG_USB_FUSB300)	+= fusb300_udc.o
 
 #
diff --git a/drivers/usb/gadget/ci13xxx_mxs.c b/drivers/usb/gadget/ci13xxx_mxs.c
new file mode 100644
index 0000000..2d99336
--- /dev/null
+++ b/drivers/usb/gadget/ci13xxx_mxs.c
@@ -0,0 +1,67 @@
+/* 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.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/usb/ulpi.h>
+#include <linux/usb/mxs-usb.h>
+
+#include "ci13xxx_udc.c"
+
+#define MSM_USB_BASE	(udc->regs)
+
+static irqreturn_t mxs_udc_irq(int irq, void *data)
+{
+	return udc_irq();
+}
+
+static struct ci13xxx_udc_driver ci13xxx_mxs_udc_driver = {
+	.name			= "ci13xxx-mxs",
+	.flags			= CI13XXX_REQUIRE_TRANSCEIVER |
+				  CI13XXX_DISABLE_STREAMING |
+				  CI13XXX_DONT_REGISTER_GADGET,
+};
+
+static int ci13xxx_mxs_probe(struct platform_device *pdev)
+{
+	struct imx_otg *data = pdev->dev.platform_data;
+	int ret;
+
+	ret = devm_request_irq(&pdev->dev, data->irq, mxs_udc_irq,
+				IRQF_SHARED, pdev->name, pdev);
+	if (ret < 0) {
+		dev_err(&pdev->dev, "Failed to request IRQ!\n");
+		return ret;
+	}
+
+	ret = udc_probe(&ci13xxx_mxs_udc_driver, &pdev->dev, data->mem);
+	if (ret < 0)
+		dev_err(&pdev->dev, "Failed to probe CI13xxx-mxs!\n");
+
+	pm_runtime_no_callbacks(&pdev->dev);
+	pm_runtime_enable(&pdev->dev);
+
+	return ret;
+}
+
+static struct platform_driver ci13xxx_mxs_driver = {
+	.probe		= ci13xxx_mxs_probe,
+	.driver		= {
+		.name	= "ci13xxx-mxs",
+	},
+};
+
+static int __init ci13xxx_mxs_init(void)
+{
+	return platform_driver_register(&ci13xxx_mxs_driver);
+}
+
+module_init(ci13xxx_mxs_init);
+
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:ci13xxx-mxs");
-- 
1.7.10