usb: musb: split tusb6010 to its own platform_driver

Just adding its own platform_driver, not really
using it yet.

When all HW glue layers are converted, more patches
will come to split power management code from musb_core
and move it completely to HW glue layer.

Signed-off-by: Felipe Balbi <balbi@ti.com>

3 files changed, 85 insertions, 2 deletions

diff --git a/arch/arm/mach-omap2/usb-tusb6010.c b/arch/arm/mach-omap2/usb-tusb6010.c
index 42389213b470..7cb3c18a5e20 100644
--- a/arch/arm/mach-omap2/usb-tusb6010.c
+++ b/arch/arm/mach-omap2/usb-tusb6010.c
@@ -223,7 +223,7 @@ static struct resource tusb_resources[] = {
 static u64 tusb_dmamask = ~(u32)0;
 
 static struct platform_device tusb_device = {
-        .name           = "musb-hdrc",
+        .name           = "musb-tusb",
         .id             = -1,
         .dev = {
                 .dma_mask               = &tusb_dmamask,
diff --git a/drivers/usb/musb/Makefile b/drivers/usb/musb/Makefile
index a48c86d9b4d0..8e0c9ad85531 100644
--- a/drivers/usb/musb/Makefile
+++ b/drivers/usb/musb/Makefile
@@ -16,11 +16,11 @@ musb_hdrc-$(CONFIG_DEBUG_FS)			+= musb_debugfs.o
 
 musb_hdrc-$(CONFIG_USB_MUSB_DAVINCI)            += davinci.o
 musb_hdrc-$(CONFIG_USB_MUSB_DA8XX)              += da8xx.o
-musb_hdrc-$(CONFIG_USB_MUSB_TUSB6010)           += tusb6010.o
 musb_hdrc-$(CONFIG_USB_MUSB_BLACKFIN)           += blackfin.o
 
 obj-$(CONFIG_USB_MUSB_OMAP2PLUS)                += omap2430.o
 obj-$(CONFIG_USB_MUSB_AM35X)                    += am35x.o
+obj-$(CONFIG_USB_MUSB_TUSB6010)                 += tusb6010.o
 
 # the kconfig must guarantee that only one of the
 # possible I/O schemes will be enabled at a time ...
diff --git a/drivers/usb/musb/tusb6010.c b/drivers/usb/musb/tusb6010.c
index 60abd52b2c51..a8e26a0f2ad4 100644
--- a/drivers/usb/musb/tusb6010.c
+++ b/drivers/usb/musb/tusb6010.c
@@ -21,6 +21,7 @@
 #include <linux/usb.h>
 #include <linux/irq.h>
 #include <linux/platform_device.h>
+#include <linux/dma-mapping.h>
 
 #include "musb_core.h"
 
@@ -1185,3 +1186,85 @@ const struct musb_platform_ops musb_ops = {
         .vbus_status    = tusb_musb_vbus_status,
         .set_vbus       = tusb_musb_set_vbus,
 };
+
+static u64 tusb_dmamask = DMA_BIT_MASK(32);
+
+static int __init tusb_probe(struct platform_device *pdev)
+{
+        struct musb_hdrc_platform_data  *pdata = pdev->dev.platform_data;
+        struct platform_device          *musb;
+
+        int                             ret = -ENOMEM;
+
+        musb = platform_device_alloc("musb-hdrc", -1);
+        if (!musb) {
+                dev_err(&pdev->dev, "failed to allocate musb device\n");
+                goto err0;
+        }
+
+        musb->dev.parent                = &pdev->dev;
+        musb->dev.dma_mask              = &tusb_dmamask;
+        musb->dev.coherent_dma_mask     = tusb_dmamask;
+
+        platform_set_drvdata(pdev, musb);
+
+        ret = platform_device_add_resources(musb, pdev->resource,
+                        pdev->num_resources);
+        if (ret) {
+                dev_err(&pdev->dev, "failed to add resources\n");
+                goto err1;
+        }
+
+        ret = platform_device_add_data(musb, pdata, sizeof(*pdata));
+        if (ret) {
+                dev_err(&pdev->dev, "failed to add platform_data\n");
+                goto err1;
+        }
+
+        ret = platform_device_add(musb);
+        if (ret) {
+                dev_err(&pdev->dev, "failed to register musb device\n");
+                goto err1;
+        }
+
+        return 0;
+
+err1:
+        platform_device_put(musb);
+
+err0:
+        return ret;
+}
+
+static int __exit tusb_remove(struct platform_device *pdev)
+{
+        struct platform_device          *musb = platform_get_drvdata(pdev);
+
+        platform_device_del(musb);
+        platform_device_put(musb);
+
+        return 0;
+}
+
+static struct platform_driver tusb_driver = {
+        .remove         = __exit_p(tusb_remove),
+        .driver         = {
+                .name   = "musb-tusb",
+        },
+};
+
+MODULE_DESCRIPTION("TUSB6010 MUSB Glue Layer");
+MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
+MODULE_LICENSE("GPL v2");
+
+static int __init tusb_init(void)
+{
+        return platform_driver_probe(&tusb_driver, tusb_probe);
+}
+subsys_initcall(tusb_init);
+
+static void __exit tusb_exit(void)
+{
+        platform_driver_unregister(&tusb_driver);
+}
+module_exit(tusb_exit);