This codes connects the CI13xxx driver with the core found inside of
the Freescale i.MX244/i.MX28 CPU.
Signed-off-by: Marek Vasut <marex@xxxxxxx>
Cc: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
Cc: Detlev Zundel <dzu@xxxxxxx>
CC: Dong Aisheng <b29396@xxxxxxxxxxxxx>
CC: Fabio Estevam <fabio.estevam@xxxxxxxxxxxxx>
Cc: Felipe Balbi <balbi@xxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Linux ARM kernel <linux-arm-kernel@xxxxxxxxxxxxxxxxxxx>
Cc: linux-i2c@xxxxxxxxxxxxxxx
CC: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
CC: Shawn Guo <shawn.guo@xxxxxxxxxx>
Cc: Stefano Babic <sbabic@xxxxxxx>
CC: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>
Cc: Wolfgang Denk <wd@xxxxxxx>
Cc: Wolfram Sang <w.sang@xxxxxxxxxxxxxx>
---
drivers/usb/chipidea/Makefile | 4 +
drivers/usb/chipidea/ci13xxx_mxs.c | 201 ++++++++++++++++++++++++++++++++++++
2 files changed, 205 insertions(+)
create mode 100644 drivers/usb/chipidea/ci13xxx_mxs.c
diff --git a/drivers/usb/chipidea/Makefile b/drivers/usb/chipidea/Makefile
index cc34937..266d57d 100644
--- a/drivers/usb/chipidea/Makefile
+++ b/drivers/usb/chipidea/Makefile
@@ -12,3 +12,7 @@ endif
ifneq ($(CONFIG_ARCH_MSM),)
obj-$(CONFIG_USB_CHIPIDEA) += ci13xxx_msm.o
endif
+
+ifneq ($(CONFIG_ARCH_MXS),)
+ obj-$(CONFIG_USB_CHIPIDEA) += ci13xxx_mxs.o
+endif
diff --git a/drivers/usb/chipidea/ci13xxx_mxs.c b/drivers/usb/chipidea/ci13xxx_mxs.c
new file mode 100644
index 0000000..fcca90b
--- /dev/null
+++ b/drivers/usb/chipidea/ci13xxx_mxs.c
@@ -0,0 +1,201 @@
+/*
+ * drivers/usb/chipidea/ci13xxx_mxs.c
+ *
+ * Freescale i.MX233/i.MX28 USB glue driver to CI13xxx core.
+ *
+ * Copyright (C) 2012 Marek Vasut <marex@xxxxxxx>
+ * on behalf of DENX Software Engineering GmbH
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/clk.h>
+#include <linux/dma-mapping.h>
+
+#include <linux/usb.h>
+#include <linux/usb/chipidea.h>
+#include <linux/usb/ch9.h>
+#include <linux/usb/otg.h>
+#include <linux/usb/gadget.h>
+#include <linux/usb/hcd.h>
+#include <linux/usb/ehci_def.h>
+
+#include <linux/usb/mxs-usb.h>
+
+#include "ci.h"
+
+static void ci13xxx_mxs_notify(struct ci13xxx *ci, unsigned event)
+{
+ uint32_t status;
+ struct usb_phy *phy;
+ struct mxs_ci13xxx_phy_notify notify;
+
+ phy = usb_get_transceiver();
+ if (!phy)
+ return;
+
+ if (event != CI13XXX_CONTROLLER_HOST_IRQ_EVENT)
+ return;
+
+ status = hw_read(ci, OP_USBSTS, ~0);
+
+ notify.discon = status & STS_PCD;
+
+ usb_phy_notify(phy, ¬ify);
+}
+
+static struct ci13xxx_udc_driver ci13xxx_mxs_udc_driver = {
+ .name = "ci13xxx_mxs",
+ .flags = /*CI13XXX_REGS_SHARED |*/
+ CI13XXX_REQUIRE_TRANSCEIVER |
+ CI13XXX_PULLUP_ON_VBUS |
+ CI13XXX_DISABLE_STREAMING,
+ .capoffset = 0x100,
+ .notify_event = ci13xxx_mxs_notify,
+};
+
+struct ci13xxx_mxs_data {
+ struct clk *clk;
+ struct platform_device *pdev;
+};
+
+static int __devinit ci13xxx_mxs_probe(struct platform_device *pdev)
+{
+ struct ci13xxx_mxs_data *data;
+ int ret;
+ struct usb_phy *phy;
+
+ phy = usb_get_transceiver();
+ if (!phy)
+ return -EPROBE_DEFER;
+
+ data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
+ if (!data) {
+ dev_err(&pdev->dev, "Failed to allocate CI13xxx-MXS data!\n");
+ return -ENOMEM;
+ }
+
+ ret = usb_phy_init(phy);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to initialize PHY!\n");
+ return -EINVAL;
+ }
+
+ data->pdev = platform_device_alloc("ci_hdrc", -1);
+ if (!data->pdev) {
+ dev_err(&pdev->dev,
+ "Failed to allocate ci_hdrc platform device!\n");
+ ret = -ENOMEM;
+ goto put_phy;
+ }
+
+ /* Add DMA mask */
+ data->pdev->dev.dma_mask = devm_kzalloc(&pdev->dev,
+ sizeof(*data->pdev->dev.dma_mask),
+ GFP_KERNEL);
+ if (!data->pdev->dev.dma_mask) {
+ ret = -ENOMEM;
+ goto put_platform;
+ }
+
+ *data->pdev->dev.dma_mask = DMA_BIT_MASK(32);
+ data->pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
+
+ ret = platform_device_add_resources(data->pdev, pdev->resource,
+ pdev->num_resources);
+ if (ret) {
+ dev_err(&pdev->dev,
+ "Failed to add resources to platform device!\n");
+ goto put_platform;
+ }
+
+ ret = platform_device_add_data(data->pdev, &ci13xxx_mxs_udc_driver,
+ sizeof(ci13xxx_mxs_udc_driver));
+ if (ret) {
+ dev_err(&pdev->dev,
+ "Failed to add platform data to platform device!\n");
+ goto put_platform;
+ }
+
+ /* Claim the Host clock. */
+ data->clk = clk_get(&pdev->dev, "usb");
+ if (IS_ERR(data->clk)) {
+ dev_err(&pdev->dev, "Failed to claim clock for USB Host\n");
+ ret = PTR_ERR(data->clk);
+ goto put_platform;
+ }
+
+ /* Prepare Host clock. */
+ ret = clk_prepare_enable(data->clk);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to enable clock for USB Host.\n");
+ goto put_clk;
+ }
+
+ ret = platform_device_add(data->pdev);
+ if (ret)
+ goto put_clk;
+
+ dev_set_drvdata(&pdev->dev, data);
+
+ pm_runtime_no_callbacks(&pdev->dev);
+ pm_runtime_enable(&pdev->dev);
+
+ return 0;
+
+put_clk:
+ clk_put(data->clk);
+put_platform:
+ platform_device_put(data->pdev);
+put_phy:
+ usb_phy_shutdown(phy);
+ return ret;
+}
+
+static int __devexit ci13xxx_mxs_remove(struct platform_device *pdev)
+{
+ struct ci13xxx_mxs_data *data = dev_get_drvdata(&pdev->dev);
+ struct usb_phy *phy = usb_get_transceiver();
+
+ clk_disable_unprepare(data->clk);
+ clk_put(data->clk);
+
+ if (phy)
+ usb_phy_shutdown(phy);
+
+ platform_device_del(data->pdev);
+ platform_device_put(data->pdev);
+
+ return 0;
+}
+
+static struct platform_driver ci13xxx_mxs_driver = {
+ .probe = ci13xxx_mxs_probe,
+ .remove = __devexit_p(ci13xxx_mxs_remove),
+ .driver = {
+ .name = "mxs-usb",
+ .owner = THIS_MODULE,
+ },
+};
+
+module_platform_driver(ci13xxx_mxs_driver);
+
+MODULE_ALIAS("platform:mxs-usb");
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("CI13xxx MXS USB binding");
+MODULE_AUTHOR("Marek Vasut <marex@xxxxxxx>");
--
1.7.10
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