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usb: fotg210: Select subdriver by mode 

Check which mode the hardware is in, and selecte the peripheral
driver if the hardware is in explicit peripheral mode, otherwise
select host mode.

This should solve the immediate problem that both subdrivers
can get probed.

Cc: Fabian Vogt <fabian@ritter-vogt.de>
Cc: Yuan-Hsin Chen <yhchen@faraday-tech.com>
Cc: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20221023144708.3596563-3-linus.walleij@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Linus Walleij 2022-10-23 16:47:08 +02:00 committed by Greg Kroah-Hartman
parent aeffd2c3b0
commit 1fac1c4da8
1 changed files with 16 additions and 9 deletions
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25
drivers/usb/fotg210/fotg210-core.c
View File

@ -10,30 +10,37 @@
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/usb.h>
#include <linux/usb/otg.h>
#include "fotg210.h"
static int fotg210_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
enum usb_dr_mode mode;
int ret;
if (IS_ENABLED(CONFIG_USB_FOTG210_HCD)) {
ret = fotg210_hcd_probe(pdev);
if (ret)
return ret;
}
if (IS_ENABLED(CONFIG_USB_FOTG210_UDC))
mode = usb_get_dr_mode(dev);
if (mode == USB_DR_MODE_PERIPHERAL)
ret = fotg210_udc_probe(pdev);
else
ret = fotg210_hcd_probe(pdev);
return ret;
}
static int fotg210_remove(struct platform_device *pdev)
{
if (IS_ENABLED(CONFIG_USB_FOTG210_HCD))
fotg210_hcd_remove(pdev);
if (IS_ENABLED(CONFIG_USB_FOTG210_UDC))
struct device *dev = &pdev->dev;
enum usb_dr_mode mode;
mode = usb_get_dr_mode(dev);
if (mode == USB_DR_MODE_PERIPHERAL)
fotg210_udc_remove(pdev);
else
fotg210_hcd_remove(pdev);
return 0;
}