This patch adds flow control support to Broadcom phys.
Signed-off-by: NMatt Carlson <mcarlson@broadcom.com>
Signed-off-by: NMichael Chan <mchan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The driver core now has this helper function, so might as well use it
instead of forcing the phy code to roll their own version.
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

This patch fixes the following build error caused by
commit ed94493f
(mv643xx_eth: convert to phylib):

<--  snip  -->

...
  Building modules, stage 2.
  MODPOST 1280 modules
ERROR: "genphy_restart_aneg" [drivers/net/mv643xx_eth.ko] undefined!
...
make[2]: *** [__modpost] Error 1

<--  snip  -->
Signed-off-by: NAdrian Bunk <bunk@kernel.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Fix kernel-doc warning, missing description:

Warning(lin2627-g3-kdocfixes//drivers/net/phy/mdio_bus.c:63): No description found for parameter 'd'
Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

1. arch/powerpc/platforms/pasemi/gpio_mdio.c also needs to be
   converted over to mdiobus_{alloc,free}().

2. drivers/net/phy/fixed.c used to embed a struct mii_bus into its
   struct fixed_mdio_bus and then use container_of() to go from the
   former to the latter.  Since mii bus structures are no longer
   embedded, we need to do something like use the mii bus private
   pointer to go from mii_bus to fixed_mdio_bus instead.
Signed-off-by: NLennert Buytenhek <buytenh@marvell.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add mdiobus_{read,write} routines to allow direct reading/writing
of registers on an mii bus without having to go through the PHY
abstraction, and make phy_{read,write} use these primitives.
Signed-off-by: NLennert Buytenhek <buytenh@marvell.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Introduce the mdio_bus class, and give each 'struct mii_bus' its own
'struct device', so that mii_bus objects are represented in the device
tree and can be found by querying the device tree.
Signed-off-by: NLennert Buytenhek <buytenh@marvell.com>
Acked-by: NAndy Fleming <afleming@freescale.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch introduces mdiobus_alloc() and mdiobus_free(), and
makes all mdio bus drivers use these functions to allocate their
struct mii_bus'es dynamically.
Signed-off-by: NLennert Buytenhek <buytenh@marvell.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
Acked-by: NAndy Fleming <afleming@freescale.com>

In preparation of giving mii_bus objects a device tree presence of
their own, rename struct mii_bus's ->dev argument to ->parent, since
having a 'struct device *dev' that points to our parent device
conflicts with introducing a 'struct device dev' representing our own
device.
Signed-off-by: NLennert Buytenhek <buytenh@marvell.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
Acked-by: NAndy Fleming <afleming@freescale.com>

This way the phy layer will respond to a change in phy state immediately,
instead of up to one second later when the state machine timer runs.
Signed-off-by: NTrent Piepho <tpiepho@freescale.com>
Acked-by: NAndy Fleming <afleming@freescale.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The PHY's aneg is configured and restarted whenever the link is brought up,
e.g. when DHCP is started after the kernel has booted.  This can take the
link down for several seconds while auto-negotiation is redone.

If the advertised features haven't changed, then it shouldn't be necessary
to bring down the link and start auto-negotiation over again.

genphy_config_advert() is enhanced to return 0 when the advertised features
haven't been changed and >0 when they have been.

genphy_config_aneg() then uses this information to not call
genphy_restart_aneg() if there has been no change.
Signed-off-by: NTrent Piepho <tpiepho@freescale.com>
Acked-by: NAndy Fleming <afleming@freescale.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Make the SIOCGMIIPHY case fall through properly (it is supposed
to not only return the ID of the default PHY but also to read from
that PHY), and make phy_mii_ioctl() return the same error code as
generic_mii_ioctl() in case of an unsupported operation.
Signed-off-by: NLennert Buytenhek <buytenh@marvell.com>
Acked-by: NAndy Fleming <afleming@freescale.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch splits the bus scanning code in mdiobus_register() off
into a separate function, and makes this function available for
calling from external code.  This allows incrementally scanning an
mii bus, e.g. as information about which addresses are 'safe' to
scan becomes available.
Signed-off-by: NLennert Buytenhek <buytenh@marvell.com>
Acked-by: NAndy Fleming <afleming@freescale.com>

MII_M1111_HWCFG_FIBER_COPPER_RES is a bit of MII_M1111_PHY_EXT_SR, not
MII_M1111_PHY_EXT_CR.
Signed-off-by: NWang Jian <lark@linux.net.cn>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>

The 27.15 bit (MII_M1111_HWCFG_FIBER_COPPER_AUTO) is disable bit. When
set to 1, copper/fiber auto selection is disabled. The current code
to enable but actually disable auto selection.
Signed-off-by: NWang Jian <lark@linux.net.cn>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>

{alloc,free}_mdio_bitbang() are not exported while they are used in
mdio-ofgpio driver.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>

This patch adds an MDIO bitbang driver that uses the GPIO library and its
OF bindings to access the bus I/Os.
Signed-off-by: NLaurent Pinchart <laurentp@cse-semaphore.com>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>

Commit cac1f3c8 factored out the code for get_phy_id so that it
could be reused in multiple places.  Turns out that some of the
users can be modular, so we need to export this symbol as well.
Signed-off-by: NPaul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>

 Add Broadcom PHYs supported missing from the description.
Signed-off-by: NMaciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>

Configure the BCM5482S secondary SerDes for 1000Base-X mode when the
appropriate dev_flags are passed in to phy_connect().  This is
needed when the PHY is used for fiber and backplane connections.
Signed-off-by: NNate Case <ncase@xes-inc.com>
Signed-off-by: NMaciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>

 PHYLIB was first marked as BROKEN on S390, then the enclosing menu marked
as non-S390, then the two dependencies merged with the conversion to
menuconfig.  Reduce to non-S390.
Signed-off-by: NMaciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>

Declared some things static, declared some things in the header.
Signed-off-by: NAndy Fleming <afleming@freescale.com>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>

Add support for two additional SMSC PHY models with identical interrupt
source and mask registers to the LAN83C185
Signed-off-by: NSteve Glendinning <steve.glendinning@smsc.com>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>

Several models of SMSC PHY have the same interrupt status and mask
registers as the LAN83C185, so these functions can service multiple
different PHY drivers.
Signed-off-by: NSteve Glendinning <steve.glendinning@smsc.com>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>

Fix kernel-doc warning:
Warning(linux-2.6.25-git11//drivers/net/phy/phy_device.c:275): No
description found for parameter 'bus_id'
Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>

Sometimes the specific interaction between the platform and the PHY
requires special handling.  For instance, to change where the PHY's
clock input is, or to add a delay to account for latency issues in the
data path.  We add a mechanism for registering a callback with the PHY
Lib to be called on matching PHYs when they are brought up, or reset.
Signed-off-by: NAndy Fleming <afleming@freescale.com>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>

We were already doing what amounts to a get_phy_id from within
get_phy_device, and rather than duplicate this for the TBIPA
probing, we might as well just factor it out and make it available
instead.
Signed-off-by: NPaul Gortmaker <paul.gortmaker@windriver.com>
Acked-by: NAndy Fleming <afleming@freescale.com>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>

The BCM5464 can be used with the current broadcom PHY driver
by just adding the appropriate chip ID and using the existing
support within.
Signed-off-by: NPaul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>

Having the id field be an int was making more complex bus topologies
excessively difficult.  For now, just convert it to a string, and
change all instances of "bus->id = val" to
snprintf(id, MII_BUS_ID_LEN, "%x", val).
Signed-off-by: NAndy Fleming <afleming@freescale.com>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>

The other if blocks don't redeclare temp, remove the redeclaration in
the final if() block.

drivers/net/phy/marvell.c:214:7: warning: symbol 'temp' shadows an earlier one
drivers/net/phy/marvell.c:160:6: originally declared here
Signed-off-by: NHarvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

This patch adds support for BCM5481 PHY. Unfortunately it's hard to
get specifications for this PHY, so its special register 0x18 isn't
annotated properly (but we know it's used to set up the delays).

I've kept the magic numbers, so we'll not forget to fix it at the
first opportunity, and will name that register and its bits correctly.

p.s. also fixed the line with broken indention, introduced by
commit 03157ac3
    PHYLIB: Add BCM5482 PHY support
Signed-off-by: NAnton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Signed-off-by: NJeff Garzik <jgarzik@redhat.com>

Marvell PHY m88e1111 (not sure about other models, but think they too)
works in two modes: fiber and copper. In Marvell PHY driver (that we
have in current community kernels) code supported only copper mode,
and this is not configurable, bits for copper mode are simply written
in registers during PHY initialization.

This patch adds support for both modes.
Signed-off-by: NAlexandr Smirnov <asmirnov@ru.mvista.com>
Acked-by: NAndy Fleming <afleming@freescale.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

This patch fixes the following build error introduced by commit
a79d8e93 and reported by Olaf Hering:

<--  snip  -->

...
  LD      .tmp_vmlinux1
arch/powerpc/sysdev/built-in.o: In function `of_add_fixed_phys':
fsl_soc.c:(.init.text+0xd34): undefined reference to `fixed_phy_add'
make: *** [.tmp_vmlinux1] Error 1

<--   snip  -->
Signed-off-by: NAdrian Bunk <adrian.bunk@movial.fi>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Signed-off-by: NFrederic Rodo <f.rodo@til-technologies.fr>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

This patch fixes a check-after-use spotted by the Coverity checker.
Signed-off-by: NAdrian Bunk <bunk@kernel.org>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

This patch fixes a use-after-free introduced by
commit a79d8e93 and spotted by the
Coverity checker.
Signed-off-by: NAdrian Bunk <bunk@kernel.org>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

this PHY present on the MPC8315E and MPC837xE RDB boards.
Signed-off-by: NJohnson Leung <r58129@freescale.com>
Signed-off-by: NKevin Lam <r43770@freescale.com>
Signed-off-by: NJoe D'Abbraccio <ljd015@freescale.com>
Signed-off-by: NKim Phillips <kim.phillips@freescale.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

PHY read/write functions can potentially sleep (e.g., a PHY accessed
via I2C).  The following changes were made to account for this:

    * Change spin locks to mutex locks
    * Add a BUG_ON() to phy_read() phy_write() to warn against
      calling them from an interrupt context.
    * Use work queue for PHY state machine handling since
      it can potentially sleep
    * Change phydev lock from spinlock to mutex
Signed-off-by: NNate Case <ncase@xes-inc.com>
Acked-by: NAndy Fleming <afleming@freescale.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This Broadcom PHY is similar to other bcm54xx devices.
Signed-off-by: NNate Case <ncase@xes-inc.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>