From 289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f Mon Sep 17 00:00:00 2001 From: Heikki Krogerus Date: Wed, 13 May 2015 15:26:42 +0300 Subject: usb: add bus type for USB ULPI UTMI+ Low Pin Interface (ULPI) is a commonly used PHY interface for USB 2.0. The ULPI specification describes a standard set of registers which the vendors can extend for their specific needs. ULPI PHYs provide often functions such as charger detection and ADP sensing and probing. There are two major issues that the bus type is meant to tackle: Firstly, ULPI registers are accessed from the controller. The bus provides convenient method for the controller drivers to share that access with the actual PHY drivers. Secondly, there are already platforms that assume ULPI PHYs are runtime detected, such as many Intel Baytrail based platforms. They do not provide any kind of hardware description for the ULPI PHYs like separate ACPI device object that could be used to enumerate a device from. Signed-off-by: Heikki Krogerus Acked-by: David Cohen Signed-off-by: Felipe Balbi --- scripts/mod/devicetable-offsets.c | 4 ++++ scripts/mod/file2alias.c | 13 +++++++++++++ 2 files changed, 17 insertions(+) (limited to 'scripts') diff --git a/scripts/mod/devicetable-offsets.c b/scripts/mod/devicetable-offsets.c index fce36d0..ada8417 100644 --- a/scripts/mod/devicetable-offsets.c +++ b/scripts/mod/devicetable-offsets.c @@ -189,5 +189,9 @@ int main(void) DEVID_FIELD(rio_device_id, asm_did); DEVID_FIELD(rio_device_id, asm_vid); + DEVID(ulpi_device_id); + DEVID_FIELD(ulpi_device_id, vendor); + DEVID_FIELD(ulpi_device_id, product); + return 0; } diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c index 78691d5..a7a8560 100644 --- a/scripts/mod/file2alias.c +++ b/scripts/mod/file2alias.c @@ -1192,6 +1192,19 @@ static int do_rio_entry(const char *filename, } ADD_TO_DEVTABLE("rapidio", rio_device_id, do_rio_entry); +/* Looks like: ulpi:vNpN */ +static int do_ulpi_entry(const char *filename, void *symval, + char *alias) +{ + DEF_FIELD(symval, ulpi_device_id, vendor); + DEF_FIELD(symval, ulpi_device_id, product); + + sprintf(alias, "ulpi:v%04xp%04x", vendor, product); + + return 1; +} +ADD_TO_DEVTABLE("ulpi", ulpi_device_id, do_ulpi_entry); + /* Does namelen bytes of name exactly match the symbol? */ static bool sym_is(const char *name, unsigned namelen, const char *symbol) { -- cgit v1.1