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usb: musb: split davinci 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>
This commit is contained in:
Felipe Balbi 2010-12-02 09:16:55 +02:00
parent 18688fbeb0
commit 73b089b052
3 changed files with 86 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/arm/mach-davinci/usb.c
View File

@ -76,7 +76,7 @@ static struct resource usb_resources[] = {
static u64 usb_dmamask = DMA_BIT_MASK(32);
static struct platform_device usb_dev = {
.name = "musb-hdrc",
.name = "musb-davinci",
.id = -1,
.dev = {
.platform_data = &usb_data,

2
drivers/usb/musb/Makefile
View File

@ -14,13 +14,13 @@ musb_hdrc-$(CONFIG_DEBUG_FS) += musb_debugfs.o
# Hardware Glue Layer
musb_hdrc-$(CONFIG_USB_MUSB_DAVINCI) += davinci.o
musb_hdrc-$(CONFIG_USB_MUSB_DA8XX) += da8xx.o
musb_hdrc-$(CONFIG_USB_MUSB_BLACKFIN) += blackfin.o
obj-$(CONFIG_USB_MUSB_OMAP2PLUS) += omap2430.o
obj-$(CONFIG_USB_MUSB_AM35X) += am35x.o
obj-$(CONFIG_USB_MUSB_TUSB6010) += tusb6010.o
obj-$(CONFIG_USB_MUSB_DAVINCI) += davinci.o
# the kconfig must guarantee that only one of the
# possible I/O schemes will be enabled at a time ...

84
drivers/usb/musb/davinci.c
View File

@ -30,6 +30,8 @@
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/gpio.h>
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
#include <mach/hardware.h>
#include <mach/memory.h>
@ -514,3 +516,85 @@ const struct musb_platform_ops musb_ops = {
.set_vbus = davinci_musb_set_vbus,
};
static u64 davinci_dmamask = DMA_BIT_MASK(32);
static int __init davinci_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 = &davinci_dmamask;
musb->dev.coherent_dma_mask = davinci_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 davinci_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 davinci_driver = {
.remove = __exit_p(davinci_remove),
.driver = {
.name = "musb-davinci",
},
};
MODULE_DESCRIPTION("DaVinci MUSB Glue Layer");
MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
MODULE_LICENSE("GPL v2");
static int __init davinci_init(void)
{
return platform_driver_probe(&davinci_driver, davinci_probe);
}
subsys_initcall(davinci_init);
static void __exit davinci_exit(void)
{
platform_driver_unregister(&davinci_driver);
}
module_exit(davinci_exit);