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greybus: interface: add Ara serial-number support 

Add support for reading the Ara serial-number attributes.

Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This commit is contained in:
Johan Hovold 2016-03-29 18:56:12 -04:00 committed by Greg Kroah-Hartman
parent 50ad4163a5
commit a7be84613a
1 changed files with 12 additions and 2 deletions
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14
drivers/staging/greybus/interface.c
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@ -24,6 +24,8 @@
#define DME_TOSHIBA_ARA_VID 0x6000
#define DME_TOSHIBA_ARA_PID 0x6001
#define DME_TOSHIBA_ARA_SN0 0x6002
#define DME_TOSHIBA_ARA_SN1 0x6003
#define DME_TOSHIBA_ARA_INIT_STATUS 0x6101
/* DDBL1 Manufacturer and Product ids */
@ -42,6 +44,7 @@ static int gb_interface_dme_attr_get(struct gb_interface *intf,
static int gb_interface_read_ara_dme(struct gb_interface *intf)
{
u32 sn0, sn1;
int ret;
/*
@ -64,8 +67,15 @@ static int gb_interface_read_ara_dme(struct gb_interface *intf)
if (ret)
return ret;
/* FIXME: serial number not implemented */
intf->serial_number = 0;
ret = gb_interface_dme_attr_get(intf, DME_TOSHIBA_ARA_SN0, &sn0);
if (ret)
return ret;
ret = gb_interface_dme_attr_get(intf, DME_TOSHIBA_ARA_SN1, &sn1);
if (ret)
return ret;
intf->serial_number = (u64)sn1 << 32 | sn0;
return 0;
}