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usb: usb251xb: Add max power/current dts property support 

This parameters may be varied in accordance with hardware specifics.
So lets add the corresponding settings to the usb251xb driver dts
specification.

Signed-off-by: Serge Semin <fancer.lancer@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Serge Semin 2017-10-22 23:38:11 +03:00 committed by Greg Kroah-Hartman
parent 287c2bb6e1
commit 4ed466ae69
1 changed files with 20 additions and 4 deletions
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24
drivers/usb/misc/usb251xb.c
View File

@ -499,6 +499,26 @@ static int usb251xb_get_ofdata(struct usb251xb *hub,
}
}
hub->max_power_sp = USB251XB_DEF_MAX_POWER_SELF;
if (!of_property_read_u32(np, "sp-max-total-current-microamp",
&property_u32))
hub->max_power_sp = min_t(u8, property_u32 / 2000, 50);
hub->max_power_bp = USB251XB_DEF_MAX_POWER_BUS;
if (!of_property_read_u32(np, "bp-max-total-current-microamp",
&property_u32))
hub->max_power_bp = min_t(u8, property_u32 / 2000, 255);
hub->max_current_sp = USB251XB_DEF_MAX_CURRENT_SELF;
if (!of_property_read_u32(np, "sp-max-removable-current-microamp",
&property_u32))
hub->max_current_sp = min_t(u8, property_u32 / 2000, 50);
hub->max_current_bp = USB251XB_DEF_MAX_CURRENT_BUS;
if (!of_property_read_u32(np, "bp-max-removable-current-microamp",
&property_u32))
hub->max_current_bp = min_t(u8, property_u32 / 2000, 255);
hub->power_on_time = USB251XB_DEF_POWER_ON_TIME;
if (!of_property_read_u32(np, "power-on-time-ms", &property_u32))
hub->power_on_time = min_t(u8, property_u32 / 2, 255);
@ -538,10 +558,6 @@ static int usb251xb_get_ofdata(struct usb251xb *hub,
/* The following parameters are currently not exposed to devicetree, but
* may be as soon as needed.
*/
hub->max_power_sp = USB251XB_DEF_MAX_POWER_SELF;
hub->max_power_bp = USB251XB_DEF_MAX_POWER_BUS;
hub->max_current_sp = USB251XB_DEF_MAX_CURRENT_SELF;
hub->max_current_bp = USB251XB_DEF_MAX_CURRENT_BUS;
hub->bat_charge_en = USB251XB_DEF_BATTERY_CHARGING_ENABLE;
hub->boost_up = USB251XB_DEF_BOOST_UP;
hub->boost_57 = USB251XB_DEF_BOOST_57;