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thunderbolt: Read switch uid from EEPROM

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Add eeprom access code and read the uid during switch initialization.
The UID will be used to check device identity after suspend.

Signed-off-by: Andreas Noever <andreas.noever@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Andreas Noever
2014-06-03 22:04:11 +02:00
committed by Greg Kroah-Hartman
parent 1df5172c5c
commit c90553b3c4
4 changed files with 198 additions and 1 deletions
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3
drivers/thunderbolt/tb.h
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@@ -19,6 +19,7 @@ struct tb_switch {
struct tb_regs_switch_header config;
struct tb_port *ports;
struct tb *tb;
u64 uid;
int cap_plug_events; /* offset, zero if not found */
bool is_unplugged; /* unplugged, will go away */
};
@@ -231,6 +232,8 @@ int tb_path_activate(struct tb_path *path);
void tb_path_deactivate(struct tb_path *path);
bool tb_path_is_invalid(struct tb_path *path);
int tb_eeprom_read_uid(struct tb_switch *sw, u64 *uid);
static inline int tb_route_length(u64 route)
{