Commit Graph

828 Commits

Author SHA1 Message Date
Aaro Koskinen
3c25a860d1 broadcom: fix PHY_ID_BCM5481 entry in the id table
Commit fcb26ec5b1 ("broadcom: move all PHY_ID's to header")
updated broadcom_tbl to use PHY_IDs, but incorrectly replaced 0x0143bca0
with PHY_ID_BCM5482 (making a duplicate entry, and completely omitting
the original). Fix that.

Fixes: fcb26ec5b1 ("broadcom: move all PHY_ID's to header")
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-23 23:29:27 -05:00
Andrew Lunn
321beec504 net: phy: Use interrupts when available in NOLINK state
The NOLINK state will poll the phy once a second to see if the link
has come up. If the phy has an interrupt line, this polling can be
skipped, since the phy should interrupt when the link returns.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-17 15:25:44 -05:00
Andrew Lunn
819ec8e1f3 phy: marvell: Add support for 88E1540 PHY
The 88E1540 can be found embedded in the Marvell 88E6352 switch.  It
is compatible with the 88E1510, so add support for it, using the
88E1510 specific functions.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-17 15:25:43 -05:00
Måns Rullgård
7729b05381 net: phy: vitesse: add support for VSC8601
This adds support for the Vitesse VSC8601 PHY. Generic functions are
used for everything except interrupt handling.

Signed-off-by: Mans Rullgard <mans@mansr.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-16 14:18:40 -05:00
Måns Rullgård
0eae5982a3 net: phy: at803x: support interrupt on 8030 and 8035
Commit 77a993942 "phy/at8031: enable at8031 to work on interrupt mode"
added interrupt support for the 8031 PHY but left out the other two
chips supported by this driver.

This patch sets the .ack_interrupt and .config_intr functions for the
8030 and 8035 drivers as well.

Signed-off-by: Mans Rullgard <mans@mansr.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-16 14:18:40 -05:00
Linus Torvalds
75f5db39ff spi: Updates for v4.4
Quite a lot of activity in SPI this cycle, almost all of it in drivers
 with a few minor improvements and tweaks in the core.
 
  - Updates to pxa2xx to support Intel Broxton and multiple chip selects.
  - Support for big endian in the bcm63xx driver.
  - Multiple slave support for the mt8173
  - New driver for the auxiliary SPI controller in bcm2835 SoCs.
  - Support for Layerscale SoCs in the Freescale DSPI driver.
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Merge tag 'spi-v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi updates from Mark Brown:
 "Quite a lot of activity in SPI this cycle, almost all of it in drivers
  with a few minor improvements and tweaks in the core.

   - Updates to pxa2xx to support Intel Broxton and multiple chip selects.
   - Support for big endian in the bcm63xx driver.
   - Multiple slave support for the mt8173
   - New driver for the auxiliary SPI controller in bcm2835 SoCs.
   - Support for Layerscale SoCs in the Freescale DSPI driver"

* tag 'spi-v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (87 commits)
  spi: pxa2xx: Rework self-initiated platform data creation for non-ACPI
  spi: pxa2xx: Add support for Intel Broxton
  spi: pxa2xx: Detect number of enabled Intel LPSS SPI chip select signals
  spi: pxa2xx: Add output control for multiple Intel LPSS chip selects
  spi: pxa2xx: Use LPSS prefix for defines that are Intel LPSS specific
  spi: Add DSPI support for layerscape family
  spi: ti-qspi: improve ->remove() callback
  spi/spi-xilinx: Fix race condition on last word read
  spi: Drop owner assignment from spi_drivers
  spi: Add THIS_MODULE to spi_driver in SPI core
  spi: Setup the master controller driver before setting the chipselect
  spi: dw: replace magic constant by DW_SPI_DR
  spi: mediatek: mt8173 spi multiple devices support
  spi: mediatek: handle controller_data in mtk_spi_setup
  spi: mediatek: remove mtk_spi_config
  spi: mediatek: Update document devicetree bindings to support multiple devices
  spi: fix kernel-doc warnings about missing return desc in spi.c
  spi: fix kernel-doc warnings about missing return desc in spi.h
  spi: pxa2xx: Align a few defines
  spi: pxa2xx: Save other reg_cs_ctrl bits when configuring chip select
  ...
2015-11-05 13:15:12 -08:00
Mark Brown
4c84518523 Merge remote-tracking branches 'spi/topic/omap-100k', 'spi/topic/omap-uwire', 'spi/topic/owner', 'spi/topic/pxa' and 'spi/topic/pxa2xx' into spi-next 2015-11-04 11:02:12 +00:00
David S. Miller
73186df8d7 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Minor overlapping changes in net/ipv4/ipmr.c, in 'net' we were
fixing the "BH-ness" of the counter bumps whilst in 'net-next'
the functions were modified to take an explicit 'net' parameter.

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-03 13:41:45 -05:00
Stefan Sørensen
a1f8723f38 dp83640: Only wait for timestamps for packets with timestamping enabled.
In the packet timestamping function, check that the ptp version and
protocol of the packet matches what we have configured the hardware to
actually generate timestamps for, before looking/waiting for a timestamp.

Signed-off-by: Stefan Sørensen <stefan.sorensen@spectralink.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-03 11:08:22 -05:00
Stefan Sørensen
ccf6ee9a69 dp83640: Prune rx timestamp list before reading from it
The list of rx timestamps are currently only pruned of old entries when a
new entry is inserted. If no new entries are added, old timestamps may
survive beyond their lifetime, possible causing them to be attached to
packets with the same sequence number after a rollover.

Signed-off-by: Stefan Sørensen <stefan.sorensen@spectralink.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-03 11:08:21 -05:00
Stefan Sørensen
4b063258ab dp83640: Delay scheduled work.
Currently rx_timestamp_work reschedules itself as a regular workqueue item,
effectively causing it run constantly as long as there are packets left in
the queue. Fix by using delayed workqueue items, limiting it to run only
every two jiffies.

Signed-off-by: Stefan Sørensen <stefan.sorensen@spectralink.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-03 11:08:21 -05:00
Stefan Sørensen
539e44d268 dp83640: Include hash in timestamp/packet matching
Only using the message type and sequence id for matching timestamps
with packets is error prone, as multiple clients may very well be
sending packets with the same messagetype and timestamp at the same
time. Fix by extending the check to include the hash of bytes 20-29
(source id in PTPv2) that is provided with the timestamps.

Signed-off-by: Stefan Sørensen <stefan.sorensen@spectralink.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-03 11:08:21 -05:00
Shaohui Xie
5f6c99e0ab net: phy: fix a bug in get_phy_c45_ids
When probing devices-in-package for a c45 phy, device zero is the last
device to probe, however, if driver reads 0 from device zero,
c45_ids->devices_in_package is set to '0', the loop condition of probing
will be matched again, see codes below:

for (i = 1;i < num_ids && c45_ids->devices_in_package == 0;i++)

driver will run in a dead loop.

This patch restructures the bug and confusing loop, it provides a helper
function get_phy_c45_devs_in_pkg which to read devices-in-package registers
of a MMD, and rewrites the loop with using the helper function.

Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-02 23:45:20 -05:00
David S. Miller
b75ec3af27 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-11-01 00:15:30 -04:00
Andrew F. Davis
3821a065f5 spi: Drop owner assignment from spi_drivers
An spi_driver does not need to set an owner, it will be populated by the
driver core.

Signed-off-by: Andrew F. Davis <afd@ti.com>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-10-28 10:30:17 +09:00
Julia Lawall
0286234187 net: phy: mdio: add missing of_node_put
for_each_available_child_of_node performs an of_node_get on each iteration, so
a break out of the loop requires an of_node_put.

A simplified version of the semantic patch that fixes this problem is as
follows (http://coccinelle.lip6.fr):

// <smpl>
@@
expression root,e;
local idexpression child;
@@

 for_each_available_child_of_node(root, child) {
   ... when != of_node_put(child)
       when != e = child
(
   return child;
|
+  of_node_put(child);
?  return ...;
)
   ...
 }
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-26 22:08:12 -07:00
Julia Lawall
447ed73600 netdev/phy: add missing of_node_put
for_each_available_child_of_node performs an of_node_get on each iteration, so
a break out of the loop requires an of_node_put.

A simplified version of the semantic patch that fixes this problem is as
follows (http://coccinelle.lip6.fr):

// <smpl>
@@
local idexpression r.n;
expression r,e;
@@

 for_each_available_child_of_node(r,n) {
   ...
(
   of_node_put(n);
|
   e = n
|
+  of_node_put(n);
?  break;
)
   ...
 }
... when != n
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-26 22:08:11 -07:00
David S. Miller
ba3e2084f2 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
	net/ipv6/xfrm6_output.c
	net/openvswitch/flow_netlink.c
	net/openvswitch/vport-gre.c
	net/openvswitch/vport-vxlan.c
	net/openvswitch/vport.c
	net/openvswitch/vport.h

The openvswitch conflicts were overlapping changes.  One was
the egress tunnel info fix in 'net' and the other was the
vport ->send() op simplification in 'net-next'.

The xfrm6_output.c conflicts was also a simplification
overlapping a bug fix.

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-24 06:54:12 -07:00
Neil Armstrong
21dd19fed3 net: phy: Add nested variants of mdiobus read/write
Since nested variants of mdiobus_read/write are used in multiple
drivers, add nested variants in the mdiobus core.

Suggested-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-23 05:57:43 -07:00
Nathan Sullivan
d2fd719bcb net/phy: micrel: Add workaround for bad autoneg
Very rarely, the KSZ9031 will appear to complete autonegotiation, but
will drop all traffic afterwards.  When this happens, the idle error
count will read 0xFF after autonegotiation completes.  Reset the PHY
when in that state.

Signed-off-by: Nathan Sullivan <nathan.sullivan@ni.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-23 02:57:26 -07:00
Andrew F. Davis
34e45ad937 net: phy: dp83848: Add TI DP83848 Ethernet PHY
Add support for the TI DP83848 Ethernet PHY device.

The DP83848 is a highly reliable, feature rich, IEEE 802.3 compliant
single port 10/100 Mb/s Ethernet Physical Layer Transceiver supporting
the MII and RMII interfaces.

Signed-off-by: Andrew F. Davis <afd@ti.com>
Signed-off-by: Dan Murphy <dmurphy@ti.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Dan Murphy <dmurphy@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-22 06:37:19 -07:00
Vivien Didelot
e2aacd963a net: mdio-gpio: move platform data header
This header file only contains the platform data structure definition,
so move it to the include/linux/platform_data/ directory.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-21 19:50:44 -07:00
Heiko Schocher
d88ecb373b net: phy: smsc: disable energy detect mode
On some boards the energy enable detect mode leads in
trouble with some switches, so make the enabling of
this mode configurable through DT.

Signed-off-by: Heiko Schocher <hs@denx.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-21 06:41:44 -07:00
David S. Miller
26440c835f Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
	drivers/net/usb/asix_common.c
	net/ipv4/inet_connection_sock.c
	net/switchdev/switchdev.c

In the inet_connection_sock.c case the request socket hashing scheme
is completely different in net-next.

The other two conflicts were overlapping changes.

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-20 06:08:27 -07:00
Arun Parameswaran
b89eb1fcf2 net: phy: bcm-phy-lib: Fix module license issue
The 'bcm-phy-lib.c', added as a part of the commit
"net: phy: Add Broadcom phy library for common interfaces"
was missing the module license. This was causing an issue
when the library is built as a module; "module license
'unspecified' taints kernel".

This patch fixes the issue by adding the module license,
author and description to the bcm-phy-lib.c file.

Fixes: a1cba5613e ("net: phy: Add Broadcom phy library for
common interfaces")
Signed-off-by: Arun Parameswaran <arunp@broadcom.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-18 19:35:10 -07:00
Axel Lin
fb0801dcc1 net: phy: aquantia/teranetics: Convert to use module_phy_driver macro
Use module_phy_driver macro to simplify the code a bit.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-14 19:01:16 -07:00
Jean Delvare
9d3a6386c8 net: mdio-octeon: Drop obsolete Kconfig advice
"Y" was the right answer for MDIO_OCTEON when this option was only
available on CAVIUM_OCTEON_SOC. But now that the option is visible on
all (64-bit) systems, this piece of advice no longer makes sense. This
helper module is selected automatically by drivers which need it
anyway.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Fixes: a6d6786452 ("net: mdio-octeon: Modify driver to work on both ThunderX and Octeon")
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Sunil Goutham <sgoutham@cavium.com>
Cc: Radha Mohan Chintakuntla <rchintakuntla@cavium.com>
Cc: David Daney <david.daney@cavium.com>
Cc: David S. Miller <davem@davemloft.net>
Acked-by: David Daney <david.daney@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-08 05:12:16 -07:00
Arun Parameswaran
9200c27a1c net: phy: bcm7xxx: Modified to use global core register defines
Modified the bcm7xxx phy driver to remove local core register
defines and use the common ones from "include/linux/brcmphy.h"

Signed-off-by: Arun Parameswaran <arunp@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-08 04:45:53 -07:00
Arun Parameswaran
8e185d6997 net: phy: Broadcom Cygnus internal Etherent PHY driver
Add support for the Broadcom Cygnus SoCs internal PHY's.
The PHYs are 1000M/100M/10M capable with support for 'EEE'
and 'APD' (Auto Power Down).

This driver supports the following Broadcom Cygnus SoCs:
 - BCM583XX (BCM58300, BCM58302, BCM58303, BCM58305)
 - BCM113XX (BCM11300, BCM11320, BCM11350, BCM11360)

The PHY's on these SoC's require some workarounds for
stable operation, both during configuration time and
during suspend/resume. This driver handles the
application of the workarounds.

Signed-off-by: Arun Parameswaran <arunp@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-08 04:45:52 -07:00
Arun Parameswaran
a1cba5613e net: phy: Add Broadcom phy library for common interfaces
This patch adds the Broadcom phy library to consolidate common
interfaces shared by Broadcom phy's.

Moved the common interfaces to the 'bcm-phy-lib.c' and updated
the Broadcom PHY drivers to use the new APIs.

Signed-off-by: Arun Parameswaran <arunp@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-08 04:45:46 -07:00
Arun Parameswaran
ddc24ae1fd net: phy: Broadcom iProc MDIO bus driver
This patch adds support for the Broadcom iProc MDIO bus interface.
The MDIO interface can be found in the Broadcom iProc family Soc's.

The MDIO bus is accessed using a combination of command and data
registers. This MDIO driver provides access to the Etherent GPHY's
connected to the MDIO bus.

Signed-off-by: Arun Parameswaran <arunp@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-08 04:44:46 -07:00
Simon Horman
f3a6bd393c phylib: Add phy_set_max_speed helper
Add a helper to allow ethernet drivers to limit the speed of a phy
(that they are attached to).

This mainly involves factoring out the business-end of
of_set_phy_supported() and exporting a new symbol.

This code seems to be open coded in several places, in several different
variants.

It is is envisaged that this will be used in situations where setting the
"max-speed" property in DT is not appropriate, e.g. because the maximum
speed is not a property of the phy hardware.

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-03 05:05:18 -07:00
Russell King
59f069789c net: update docbook comment for __mdiobus_register()
Update the docbook comment for __mdiobus_register() to include the new
module owner argument.  This resolves a warning found by the 0-day
builder.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-25 21:37:19 -07:00
Russell King
357cd64c18 phy: marvell: add link partner advertised modes
Read the standard link partner advertisment registers and store it in
phydev->lp_advertising, so ethtool can report this information to
userspace via ethtool.  Zero it as per genphy if autonegotiation is
disabled.  Tested with a Marvell 88E1512 PHY.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-25 12:23:47 -07:00
Russell King
38737e490d phy: add phy_device_remove()
Add a phy_device_remove() function to complement phy_device_register(),
which undoes the effects of phy_device_register() by removing the phy
device from visibility, but not freeing it.

This allows these details to be moved out of the mdio bus code into
the phy code where this action belongs.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-24 23:04:53 -07:00
Russell King
d618bf2bfd phy: fixed-phy: properly validate phy in fixed_phy_update_state()
Validate that the phy_device passed into fixed_phy_update_state() is a
fixed-phy device before walking the list of phys for a fixed phy at the
same address.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-24 23:04:53 -07:00
Russell King
7322967bc1 phy: add proper phy struct device refcounting
Take a refcount on the phy struct device when the phy device is attached
to a network device, and drop it after it's detached.  This ensures that
a refcount is held on the phy device while the device is being used by
a network device, thereby preventing the phy_device from being
unexpectedly kfree()'d by phy_device_release().

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-24 23:04:52 -07:00
Russell King
3e3aaf6494 phy: fix mdiobus module safety
Re-implement the mdiobus module refcounting to ensure that we actually
ensure that the mdiobus module code does not go away while we might call
into it.

The old scheme using bus->dev.driver was buggy, because bus->dev is a
class device which never has a struct device_driver associated with it,
and hence the associated code trying to obtain a refcount did nothing
useful.

Instead, take the approach that other subsystems do: pass the module
when calling mdiobus_register(), and record that in the mii_bus struct.
When we need to increment the module use count in the phy code, use
this stored pointer.  When the phy is deteched, drop the module
refcount, remembering that the phy device might go away at that point.

This doesn't stop the mii_bus going away while there are in-use phys -
it merely stops the underlying code vanishing.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-24 23:04:52 -07:00
Russell King
a136442131 phy: fix of_mdio_find_bus() device refcount leak
of_mdio_find_bus() leaks a struct device refcount, caused by using
class_find_device() and not realising that the device reference has
its refcount incremented:

 * Note, you will need to drop the reference with put_device() after use.
...
        while ((dev = class_dev_iter_next(&iter))) {
                if (match(dev, data)) {
                        get_device(dev);
                        break;
                }

Update the comment, and arrange for the phy code to drop this refcount
when disposing of a reference to it.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-24 23:04:52 -07:00
Luis de Bethencourt
1ccb141e31 net: phy: mdio-gpio: Fix module autoload for OF platform driver
This platform driver has a OF device ID table but the OF module
alias information is not created so module autoloading won't work.

Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-21 16:11:20 -07:00
Luis de Bethencourt
2f90a30706 net: phy: mdio-bcm-unimac: Fix module autoload for OF platform driver
This platform driver has a OF device ID table but the OF module
alias information is not created so module autoloading won't work.

Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-21 16:11:20 -07:00
Kevin Hao
aab0c0e62e Revert "net/phy: Add Vitesse 8641 phy ID"
This reverts commit 1298267b54.

That commit claim that the Vitesse VSC8641 is compatible with Vitesse
82xx. But this is not true. It seems that all the registers used
in Vitesse phy driver are not compatible between 8641 and 82xx.
It does cause malfunction of the Ethernet on p1010rdb-pa board.
So we definitely need a rework in order to support the 8641 phy
in this driver.

Signed-off-by: Kevin Hao <haokexin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-20 22:29:34 -07:00
Woojung.Huh@microchip.com
792aec47d5 add microchip LAN88xx phy driver
Add Microchip LAN88XX phy driver for phylib.

Signed-off-by: Woojung Huh <woojung.huh@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-09 17:19:14 -07:00
Sergei Shtylyov
bd1a05ee98 fixed_phy: pass 'irq' to fixed_phy_add()
I've noticed  that fixed_phy_register() ignores its 'irq' parameter instead of
passing it to fixed_phy_add(). Luckily, fixed_phy_register()  seems to  always
be  called with PHY_POLL  for 'irq'... :-)

Fixes: a759512174 ("net: phy: extend fixed driver with fixed_phy_register()")
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-06 23:49:33 -07:00
Mark Salter
b6c6aedcbc phylib: fix device deletion order in mdiobus_unregister()
commit 8b63ec1837 ("phylib: Make PHYs children of their MDIO bus, not
the bus' parent.") uncovered a problem in mdiobus_unregister() which
leads to this warning when I reboot an APM Mustang (arm64) platform:

  WARNING: CPU: 7 PID: 4239 at fs/sysfs/group.c:224 sysfs_remove_group+0xa0/0xa4()
  sysfs group fffffe0000e07a10 not found for kobject 'xgene-mii-eth0:03'
  ...
  CPU: 7 PID: 4239 Comm: reboot Tainted: G            E   4.2.0-0.18.el7.test15.aarch64 #1
  Hardware name: AppliedMicro Mustang/Mustang, BIOS 1.1.0 Aug 26 2015
  Call Trace:
  [<fffffe000009739c>] dump_backtrace+0x0/0x170
  [<fffffe000009752c>] show_stack+0x20/0x2c
  [<fffffe00007436f0>] dump_stack+0x78/0x9c
  [<fffffe00000c2cb4>] warn_slowpath_common+0xa0/0xd8
  [<fffffe00000c2d60>] warn_slowpath_fmt+0x74/0x88
  [<fffffe0000293d3c>] sysfs_remove_group+0x9c/0xa4
  [<fffffe00004a8bac>] dpm_sysfs_remove+0x5c/0x70
  [<fffffe000049b388>] device_del+0x44/0x208
  [<fffffe000049b578>] device_unregister+0x2c/0x7c
  [<fffffe000050dc68>] mdiobus_unregister+0x48/0x94
  [<fffffe000052afd0>] xgene_enet_mdio_remove+0x28/0x44
  [<fffffe000052d3f0>] xgene_enet_remove+0xd0/0xd8
  [<fffffe000052d424>] xgene_enet_shutdown+0x2c/0x3c
  [<fffffe00004a204c>] platform_drv_shutdown+0x24/0x40
  [<fffffe000049d4f4>] device_shutdown+0xf0/0x1b4
  [<fffffe00000e31ec>] kernel_restart_prepare+0x40/0x4c
  [<fffffe00000e32f8>] kernel_restart+0x1c/0x80
  [<fffffe00000e3670>] SyS_reboot+0x17c/0x250

The problem is that mdiobus_unregister() deletes the bus device before
unregistering the phy devices on the bus. This wasn't a problem before
because the phys were not children of the bus:

  /sys/devices/platform/APMC0D05:00/net/eth0/xgene-mii-eth0:03
  /sys/devices/platform/APMC0D05:00/net/eth0/xgene-mii-eth0

But now that they are:

  /sys/devices/platform/APMC0D05:00/net/eth0/xgene-mii-eth0/xgene-mii-eth0:03

when mdiobus_unregister deletes the bus device, the phy subdirs are
removed from sysfs also. So when the phys are unregistered afterward,
we get the warning. This patch changes the order so that phys are
unregistered before the bus device is deleted.

Fixes: 8b63ec1837 ("phylib: Make PHYs children of their MDIO bus, not the bus' parent.")
Signed-off-by: Mark Salter <msalter@redhat.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Tested-by: Mark Langsdorf <mlangsdo@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-01 15:02:36 -07:00
Andrew Lunn
bc0f4a87fc net: phy: fixed_phy: Set phy capabilities even when link down.
What features a phy supports is masked in genphy_config_init() by
looking at the PHYs BMSR register.

If the link is down, fixed_phy_update_regs() will only set the auto-
negotiation capable bit in BMSR. Thus genphy_config_init() comes to
the conclusion the PHY can only perform 10/Half, and masks out the
higher speed features. If however the link it up, BMSR is set to
indicate the speed the PHY is capable of auto-negotiating, and
genphy_config_init() does not mask out the high speed features.

To fix this, when the link is down, have fixed_phy_update_regs() leave
the link status, auto-negotiation complete, and link partner
capabilities unset, but set all the local capabilities depending on
the fixed phy speed.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-31 14:48:03 -07:00
Andrew Lunn
a5597008db phy: fixed_phy: Add gpio to determine link up/down.
An SFP module may have a link up/down status pin which can be
connection to a GPIO line of the host. Add support for reading such an
GPIO in the fixed_phy driver.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-31 14:48:02 -07:00
Andrew Lunn
34b31da486 phy: fixed_phy: Set supported speed in phydev
Set the supported field of the phydev to indicate the speed features
of the phy. If the phy is never attached to a netdev, but used in an
adjust_link() function, the speed will be incorrectly evaluated to
10/half rather than the correct speed/duplex.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-31 14:48:02 -07:00
Florian Fainelli
5a11dd7d96 net: phy: Allow PHY devices to identify themselves as Ethernet switches, etc.
Some Ethernet MAC drivers using the PHY library require the hardcoding
of link parameters when interfaced to a switch device, SFP module,
switch to switch port, etc. This has typically lead to various ad-hoc
implementations looking like this:

- using a "fixed PHY" emulated device, which will provide link
  indication towards the Ethernet MAC driver and hardware

- pretend there is no PHY and hardcode link parameters, ala mv643x_eth

Based on that, it is desireable to have the PHY drivers advertise the
correct link parameters, just like regular Ethernet PHYs towards their
CPU Ethernet MAC drivers, however, Ethernet MAC drivers should be able
to tell whether this link should be monitored or not. In the context
of an Ethernet switch, SFP module, switch to switch link, we do not
need to monitor this link since it should be always up.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-31 14:48:01 -07:00
Sergei Shtylyov
ef899c0778 phylib: simplify NULL checks
Fix scripts/checkpatch.pl's messages like:

CHECK: Comparison to NULL could be written "!phydrv->read_mmd_indirect"

BTW, it doesn't detect the reversed comparisons (which I've fixed as well).

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-28 14:15:25 -07:00