From: Luigi 'Comio' Mantellini <luigi.mantell...@idf-hit.com>
This patch rewrites the miiphybb ( Bit-banged MII bus driver ) in order to
support an arbitrary number of buses. This feature is useful when your board
uses different mii buses for different phys and all (or a part) of these buses
are implemented via bit-banging mode.
The driver requires that the following macros should be defined into the board
configuration file:
CONFIG_BITBANGMII - Enable the miiphybb driver
CONFIG_BITBANGMII_MULTI - Enable the multi bus support
If the CONFIG_BITBANGMII_MULTI is not defined, the board's config file needs to
define
the following macros:
MII_INIT - Generic cod to enable the MII bus (like gpios setup)
MDIO_DECLARE - Declaration needed to access to the MDIO pin
MDIO_ACTIVE - Activate the MDIO pin as out pin
MDIO_TRISTATE - Activate the MDIO pin as input/tristate pin
MDIO_READ - Read the MDIO pin
MDIO(v) - Write v on the MDIO pin
MDC_DECLARE - Declaration needed to access to the MDC pin
MDC(v) - Write v on the MDC pin
The previous macros make the driver compatible with the previous version
(that didn't support the multi-bus).
When the CONFIG_BITBANGMII_MULTI is defined, the board code needs to fill the
bbmiibusses[] array with a record for each required bus.
The record (struct bbmiibus) has the following fields/callbacks (see miiphy.h
for
details):
char name[] - The symbolic name that must be equal to the MII bus
registered
name
int (*init)() - Initialization function called at startup time (just
before the
Ethernet initialization)
int (*mdio_active)() - Activate the MDIO pin as output
int (*mdio_tristate)() - Activate the MDIO pin as input/tristate pin
int (*set_mdio)() - Write the MDIO pin
int (*get_mdio)() - Read the MDIO pin
int (*set_mdc)() - Write the MDC pin
int (*delay)() - Delay function
void *priv - Private data used by board specific code
The board code will look like:
struct bbmiibus bbmiibusses[] = {
{ .name = "miibus#1", .init = b1_init, .mdio_active = b1_mdio_active, ... },
{ .name = "miibus#2", .init = b2_init, .mdio_active = b2_mdio_active, ... },
...
};
Patch Changelog:
v1 -- First (broken) release
v2 -- Fix some typos and disable callbacks pointers relacation (if
CONFIG_RELOC_FIXUP_WORKS is not defined)
v3 -- Do not relocate NULL pointers
Luigi 'Comio' Mantellini (3):
Bit-banged MII driver with multi-bus support.
Add bb_miiphy_init call before any ethernet bring-up code.
Update all board to support new bbmiiphy driver (with multibus
support)
drivers/net/phy/miiphybb.c | 324 +++++++++++++++++++++++++++++-------------
include/configs/ISPAN.h | 3 +
include/configs/MPC8260ADS.h | 2 +
include/configs/MPC8266ADS.h | 3 +
include/configs/MPC8560ADS.h | 3 +
include/configs/Rattler.h | 3 +
include/configs/SBC8540.h | 3 +
include/configs/TQM8272.h | 2 +
include/configs/VoVPN-GW.h | 3 +
include/configs/ZPC1900.h | 3 +
include/configs/ep8248.h | 3 +
include/configs/ep82xxm.h | 3 +
include/configs/gw8260.h | 3 +
include/configs/hymod.h | 9 ++
include/configs/muas3001.h | 3 +
include/configs/ppmc8260.h | 3 +
include/configs/sacsng.h | 3 +
include/configs/sbc8260.h | 3 +
include/configs/sbc8560.h | 3 +
include/miiphy.h | 22 +++
lib_arm/board.c | 3 +
lib_avr32/board.c | 3 +
lib_blackfin/board.c | 3 +
lib_i386/board.c | 3 +
lib_m68k/board.c | 3 +
lib_mips/board.c | 3 +
lib_ppc/board.c | 4 +-
lib_sh/board.c | 3 +
lib_sparc/board.c | 3 +
29 files changed, 335 insertions(+), 97 deletions(-)
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