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usb: common: of_usb_get_maximum_speed to usb_get_maximum_speed

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By using the unified device property interface, the function
can be made available for all platforms and not just the
ones using DT.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Heikki Krogerus
2015-09-21 11:14:32 +03:00
committed by Felipe Balbi
parent 58efd4b06d
commit 63863b988e
6 changed files with 32 additions and 36 deletions
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44
drivers/usb/common/common.c
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@@ -60,6 +60,24 @@ const char *usb_speed_string(enum usb_device_speed speed)
}
EXPORT_SYMBOL_GPL(usb_speed_string);
enum usb_device_speed usb_get_maximum_speed(struct device *dev)
{
const char *maximum_speed;
int err;
int i;
err = device_property_read_string(dev, "maximum-speed", &maximum_speed);
if (err < 0)
return USB_SPEED_UNKNOWN;
for (i = 0; i < ARRAY_SIZE(speed_names); i++)
if (strcmp(maximum_speed, speed_names[i]) == 0)
return i;
return USB_SPEED_UNKNOWN;
}
EXPORT_SYMBOL_GPL(usb_get_maximum_speed);
const char *usb_state_string(enum usb_device_state state)
{
static const char *const names[] = {
@@ -113,32 +131,6 @@ enum usb_dr_mode of_usb_get_dr_mode(struct device_node *np)
}
EXPORT_SYMBOL_GPL(of_usb_get_dr_mode);
/**
* of_usb_get_maximum_speed - Get maximum requested speed for a given USB
* controller.
* @np: Pointer to the given device_node
*
* The function gets the maximum speed string from property "maximum-speed",
* and returns the corresponding enum usb_device_speed.
*/
enum usb_device_speed of_usb_get_maximum_speed(struct device_node *np)
{
const char *maximum_speed;
int err;
int i;
err = of_property_read_string(np, "maximum-speed", &maximum_speed);
if (err < 0)
return USB_SPEED_UNKNOWN;
for (i = 0; i < ARRAY_SIZE(speed_names); i++)
if (strcmp(maximum_speed, speed_names[i]) == 0)
return i;
return USB_SPEED_UNKNOWN;
}
EXPORT_SYMBOL_GPL(of_usb_get_maximum_speed);
/**
* of_usb_host_tpl_support - to get if Targeted Peripheral List is supported
* for given targeted hosts (non-PC hosts)