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* net: phy: Trigger state machine on state change and not polling.Andrew Lunn2016-10-131-2/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | The phy_start() is used to indicate the PHY is now ready to do its work. The state is changed, normally to PHY_UP which means that both the MAC and the PHY are ready. If the phy driver is using polling, when the next poll happens, the state machine notices the PHY is now in PHY_UP, and kicks off auto-negotiation, if needed. If however, the PHY is using interrupts, there is no polling. The phy is stuck in PHY_UP until the next interrupt comes along. And there is no reason for the PHY to interrupt. Have phy_start() schedule the state machine to run, which both speeds up the polling use case, and makes the interrupt use case actually work. This problems exists whenever there is a state change which will not cause an interrupt. Trigger the state machine in these cases, e.g. phy_error(). Signed-off-by: Andrew Lunn <andrew@lunn.ch> Cc: Kyle Roeschley <kyle.roeschley@ni.com> Tested-by: Kyle Roeschley <kyle.roeschley@ni.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* drivers: net: phy: Correct duplicate MDIO_XGENE entryLaura Abbott2016-10-071-7/+1
| | | | | | | | | | An extra entry for MDIO_XGENE got added during merging. Delete it. Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Laura Abbott <labbott@redhat.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: phy: Add Wake-on-LAN driver for Microsemi PHYs.Raju Lakkaraju2016-10-071-0/+128
| | | | | | | | | | | | | Wake-on-LAN (WoL) is an Ethernet networking standard that allows a computer/device to be turned on or awakened by a network message. VSC8531 PHY can support this feature configure by driver set function. WoL status get by driver get function. Tested on Beaglebone Black with VSC 8531 PHY. Signed-off-by: Raju Lakkaraju <Raju.Lakkaraju@microsemi.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* phy: micrel.c: Enable ksz9031 energy-detect power-down modeMike Looijmans2016-10-061-0/+21
| | | | | | | | | | | Set bit 0 in register 1C.23 to enable the EDPD feature of the KSZ9031 PHY. This reduces power consumption when the link is down. Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com Signed-off-by: David S. Miller <davem@davemloft.net>
* net: phy: Add Edge-rate driver for Microsemi PHYs.Raju Lakkaraju2016-10-041-0/+125
| | | | | | | | | | | | | | | | | | | | | | | | Edge-rate: As system and networking speeds increase, a signal's output transition, also know as the edge rate or slew rate (V/ns), takes on greater importance because high-speed signals come with a price. That price is an assortment of interference problems like ringing on the line, signal overshoot and undershoot, extended signal settling times, crosstalk noise, transmission line reflections, false signal detection by the receiving device and electromagnetic interference (EMI) -- all of which can negate the potential gains designers are seeking when they try to increase system speeds through the use of higher performance logic devices. The fact is, faster signaling edge rates can cause a higher level of electrical noise or other type of interference that can actually lead to slower line speeds and lower maximum system frequencies. This parameter allow the board designers to change the driving strange, and thereby change the EMI behavioral. Edge-rate parameters (vddmac, edge-slowdown) get from Device Tree. Tested on Beaglebone Black with VSC 8531 PHY. Signed-off-by: Raju Lakkaraju <Raju.Lakkaraju@microsemi.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2016-09-231-4/+2
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| * drivers: net: phy: xgene: Fix 'remove' functionChristophe Jaillet2016-09-131-4/+2
| | | | | | | | | | | | | | | | | | | | | | | | If 'IS_ERR(pdata->clk)' is true, then 'clk_disable_unprepare(pdata->clk)' will do nothing. It is likely that 'if (!IS_ERR(pdata->clk))' was expected here. In fact, the test can even be removed because 'clk_disable_unprepare' already handles such cases. Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net: phy: Add MAC-IF driver for Microsemi PHYs.Raju Lakkaraju2016-09-201-0/+51
| | | | | | | | | | | | | | | | | | | | | | | | | | | | All the review comments updated and resending for review. This is MAC interface feature. Microsemi PHY can support RGMII, RMII or GMII/MII interface between MAC and PHY. MAC-IF function program the right value based on Device tree configuration. Tested on Beaglebone Black with VSC 8531 PHY. Signed-off-by: Raju Lakkaraju <Raju.Lakkaraju@microsemi.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
* | phy: mark lan88xx_suspend() staticBaoyou Xie2016-09-201-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | We get 1 warning when building kernel with W=1: drivers/net/phy/microchip.c:58:5: warning: no previous prototype for 'lan88xx_suspend' [-Wmissing-prototypes] In fact, this function is only used in the file in which it is declared and don't need a declaration, but can be made static. so this patch marks this function with 'static'. Signed-off-by: Baoyou Xie <baoyou.xie@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2016-09-131-0/+7
|\| | | | | | | | | | | | | | | | | | | | | Conflicts: drivers/net/ethernet/mediatek/mtk_eth_soc.c drivers/net/ethernet/qlogic/qed/qed_dcbx.c drivers/net/phy/Kconfig All conflicts were cases of overlapping commits. Signed-off-by: David S. Miller <davem@davemloft.net>
| * drivers: net: phy: mdio-xgene: Add hardware dependencyJean Delvare2016-09-101-0/+1
| | | | | | | | | | | | | | | | | | | | The mdio-xgene driver is only useful on X-Gene SoC. Signed-off-by: Jean Delvare <jdelvare@suse.de> Cc: Iyappan Subramanian <isubramanian@apm.com> Cc: David S. Miller <davem@davemloft.net> Acked-by: Iyappan Subramanian <isubramanian@apm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net: phy: Fixed checkpatch errors for Microsemi PHYs.Raju Lakkaraju2016-09-102-92/+92
| | | | | | | | | | | | | | The existing VSC85xx PHY driver did not follow the coding style and caused "checkpatch" to complain. This commit fixes this. Signed-off-by: Raju Lakkaraju <Raju.Lakkaraju@microsemi.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2016-08-302-3/+5
|\| | | | | | | | | | | | | All three conflicts were cases of simple overlapping changes. Signed-off-by: David S. Miller <davem@davemloft.net>
| * Revert "phy: IRQ cannot be shared"Xander Huff2016-08-261-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts: commit 33c133cc7598 ("phy: IRQ cannot be shared") On hardware with multiple PHY devices hooked up to the same IRQ line, allow them to share it. Sergei Shtylyov says: "I'm not sure now what was the reason I concluded that the IRQ sharing was impossible... most probably I thought that the kernel IRQ handling code exited the loop over the IRQ actions once IRQ_HANDLED was returned -- which is obviously not so in reality..." Signed-off-by: Xander Huff <xander.huff@ni.com> Signed-off-by: Nathan Sullivan <nathan.sullivan@ni.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * phy: micrel: Reenable interrupts during resume for ksz9031Xander Huff2016-08-241-1/+1
| | | | | | | | | | | | | | | | | | | | | | Like the ksz8081, the ksz9031 has the behavior where it will clear the interrupt enable bits when leaving power down. This takes advantage of the solution provided by f5aba91. Signed-off-by: Xander Huff <xander.huff@ni.com> Signed-off-by: Nathan Sullivan <nathan.sullivan@ni.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net: phy: xgmiitorgmii: Fix non static symbol warningWei Yongjun2016-08-241-1/+1
| | | | | | | | | | | | | | | | | | | | Fixes the following sparse warning: drivers/net/phy/xilinx_gmii2rgmii.c:61:5: warning: symbol 'xgmiitorgmii_probe' was not declared. Should it be static? Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net: phy: Add missing of_node_put() in xgmiitorgmii_probe()Wei Yongjun2016-08-231-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | This node pointer is returned by of_parse_phandle() with refcount incremented in this function. of_node_put() on it before exitting this function. This is detected by Coccinelle semantic patch. Signed-off-by: Wei Yongjun <weiyj.lk@gmail.com> Reviewed-by: Kedareswara rao Appana <appanad@xilinx.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net: phy: Kconfig: Remove redundant "Support for"Andrew Lunn2016-08-201-35/+35
| | | | | | | | | | | | | | | | | | | | Remove the redundant "Support for" and "Drivers for" from the Kconfig short description. This makes the manufacture much more prominent in the list and makes the shortcut keys useful. 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>
* | net: phy: Sort Makefile and KconfigAndrew Lunn2016-08-202-250/+253
| | | | | | | | | | | | | | | | | | | | Sort the files to reduce merge conflicts and to make it easier to find drivers by name. Also separate the MDIO bus drivers from the PHY drivers, again to help find what you need. 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>
* | net: phy: Update copyright infoAppana Durga Kedareswara Rao2016-08-191-0/+2
| | | | | | | | | | | | | | | | | | | | | | For implementing this driver most of the inputs is provided by Andrew Lunn. Updating the driver with Andrew Copy right. Signed-off-by: Kedareswara rao Appana <appanad@xilinx.com> Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2016-08-181-8/+19
|\| | | | | | | | | | | | | | | | | Minor overlapping changes for both merge conflicts. Resolution work done by Stephen Rothwell was used as a reference. Signed-off-by: David S. Miller <davem@davemloft.net>
| * net: phy: micrel: Add specific suspendWenyou Yang2016-08-101-8/+19
| | | | | | | | | | | | | | | | | | | | Disable all interrupts when suspend, they will be enabled when resume. Otherwise, the suspend/resume process will be blocked occasionally. Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net: phy: Fix return value check in xgmiitorgmii_probe()Wei Yongjun2016-08-161-1/+1
| | | | | | | | | | | | | | | | | | In case of error, the function of_parse_phandle() returns NULL pointer not ERR_PTR(). The IS_ERR() test in the return value check should be replaced with NULL test. Signed-off-by: Wei Yongjun <weiyj.lk@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net: phy: initialize rc to zero to avoid returning garbage valueColin Ian King2016-08-141-1/+1
| | | | | | | | | | | | | | | | | | In the case where phydev->interrupts is not PHY_INTERRUPT_ENABLED function vsc85xx_ack_interrupt is returning an uninitialized garbage value. Fix this by initializing rc to zero. Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net: phy: Add gmiitorgmii converter supportAppana Durga Kedareswara Rao2016-08-133-0/+117
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds support for gmiitorgmii converter. The GMII to RGMII IP core provides the Reduced Gigabit Media Independent Interface (RGMII) between Ethernet physical media Devices and the Gigabit Ethernet controller. This core can Switch dynamically between the three different speed modes of Operation by configuring the converter register through mdio write. MDIO interface is used to set operating speed of Ethernet MAC. This converter sits between the MAC and the external phy MAC <==> GMII2RGMII <==> RGMII_PHY Signed-off-by: Kedareswara rao Appana <appanad@xilinx.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | Microsemi VSC 8531/41 PHY DriverRaju Lakkaraju2016-08-093-0/+167
|/ | | | | | | | | | | | | | Hello, I added all review comments and re-sending for review. >From a5017f5878a92d2acec86a6a29b1498c457cb73a Mon Sep 17 00:00:00 2001 From: Nagaraju Lakkaraju <Raju.Lakkaraju@microsemi.com> Date: Wed, 3 Aug 2016 18:28:24 +0530 Subject: [PATCH v2] net: phy: Add drivers for Microsemi PHYs Signed-off-by: Nagaraju Lakkaraju <Raju.Lakkaraju@microsemi.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* phy/micrel: Change phy_id_mask for KSZ8721Alexander Stein2016-08-011-2/+2
| | | | | | | | | There are KSZ8721 PHYs with phy_id 0x00221619. In order to detect them as PHY_ID_KSZ8001 compatible while staying different to PHY_ID_KSZ9021 ignore the last two bits when matching PHY_ID Signed-off-by: Alexander Stein <alexanders83@web.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* drivers: net: phy: xgene: Remove redundant dev_err call in xgene_mdio_probe()Wei Yongjun2016-07-311-3/+1
| | | | | | | | | | There is a error message within devm_ioremap_resource already, so remove the dev_err call to avoid redundant error message. Signed-off-by: Wei Yongjun <weiyj.lk@gmail.com> Acked-By: Iyappan Subramanian <isubramanian@apm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* drivers: net: phy: xgene: Add MDIO driverIyappan Subramanian2016-07-264-0/+627
| | | | | | | | | | | | | | | Currently, SGMII based 1G rely on the hardware registers for link state and sometimes it's not reliable. To get most accurate link state, this interface has to use the MDIO bus to poll the PHY. In X-Gene SoC, MDIO bus is shared across RGMII and SGMII based 1G interfaces, so adding this driver to manage MDIO bus. This driver registers the mdio bus and registers the PHYs connected to it. Signed-off-by: Iyappan Subramanian <isubramanian@apm.com> Tested-by: Fushen Chen <fchen@apm.com> Tested-by: Toan Le <toanle@apm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Marvell phy: add functions to suspend and resume both interfaces: fiber and ↵Charles-Antoine Couret2016-07-201-2/+71
| | | | | | | | | | | copper links. These functions used standards registers in a different page for both interfaces: copper and fiber. Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Charles-Antoine Couret <charles-antoine.couret@nexvision.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
* Marvell phy: add configuration of autonegociation for fiber link.Charles-Antoine Couret2016-07-201-2/+109
| | | | | | | | | | To be correctly initilized, the fiber interface needs to be configured via autonegociation registers which use some customs options or registers. Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Charles-Antoine Couret <charles-antoine.couret@nexvision.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
* Marvell phy: add field to get errors from fiber link.Charles-Antoine Couret2016-07-201-2/+7
| | | | | | | | | | | Add support for the fiber receiver error counter in the statistics. Rename the current counter which is for copper errors to phy_receive_errors_copper, so it is easy to distinguish copper from fiber. Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Charles-Antoine Couret <charles-antoine.couret@nexvision.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
* Marvell phy: check link status in case of fiber link.Charles-Antoine Couret2016-07-201-12/+141
| | | | | | | | | | | | | | | For concerned phy, the fiber link is checked before the copper link. According to datasheet, the link which is up is enabled. If both links are down, copper link would be used. To detect fiber link status, we used the real time status because of troubles with the copper method. Tested with Marvell 88E1512. Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Charles-Antoine Couret <charles-antoine.couret@nexvision.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: Add MDIO bus driver for the Hisilicon FEMACDongpo Li2016-07-173-0/+174
| | | | | | | | | | | This patch adds a separate driver for the MDIO interface of the Hisilicon Fast Ethernet MAC. Signed-off-by: Dongpo Li <lidongpo@hisilicon.com> Reviewed-by: Jiancheng Xue <xuejiancheng@hisilicon.com> Acked-by: Rob Herring <robh@kernel.org> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: phy: micrel: Add KSZ8041FTL fiber mode supportPhilipp Zabel2016-07-151-2/+32
| | | | | | | | | | We can't detect the FXEN (fiber mode) bootstrap pin, so configure it via a boolean device tree property "micrel,fiber-mode". If it is enabled, auto-negotiation is not supported. The only available modes are 100base-fx (full duplex and half duplex). Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2016-07-061-4/+9
|\ | | | | | | | | | | | | | | | | | | | | Conflicts: drivers/net/ethernet/mellanox/mlx5/core/en.h drivers/net/ethernet/mellanox/mlx5/core/en_main.c drivers/net/usb/r8152.c All three conflicts were overlapping changes. Signed-off-by: David S. Miller <davem@davemloft.net>
| * net: phy: dp83867: Fix initialization of PHYCR registerStefan Hauser2016-07-021-4/+9
| | | | | | | | | | | | | | | | | | | | | | | | When initializing the PHY control register, the FIFO depth bits are written without reading the previous register value, i.e. all other bits are overwritten with zero. This disables automatic MDI-X configuration, which is enabled by default. Fix initialization by doing a read/modify/write operation. Signed-off-by: Stefan Hauser <stefan@shauser.net> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2016-06-303-37/+84
|\| | | | | | | | | | | | | | | Several cases of overlapping changes, except the packet scheduler conflicts which deal with the addition of the free list parameter to qdisc_enqueue(). Signed-off-by: David S. Miller <davem@davemloft.net>
| * net: marvell: Add separate config ANEG function for Marvell 88E1111Harini Katakam2016-06-291-1/+43
| | | | | | | | | | | | | | | | | | | | | | Marvell 88E1111 currently uses the generic marvell config ANEG function. This function has a sequence accessing Page 5 and Register 31, both of which are not defined or reserved for this PHY. Hence this patch adds a new config ANEG function for Marvell 88E1111 without these erroneous accesses. Signed-off-by: Harini Katakam <harinik@xilinx.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * net: phy: Manage fixed PHY address space using IDAFlorian Fainelli2016-06-291-11/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If we have a system which uses fixed PHY devices and calls fixed_phy_register() then fixed_phy_unregister() we can exhaust the number of fixed PHYs available after a while, since we keep incrementing the variable phy_fixed_addr, but we never decrement it. This patch fixes that by converting the fixed PHY allocation to using IDA, which takes care of the allocation/dealloaction of the PHY addresses for us. Fixes: a75951217472 ("net: phy: extend fixed driver with fixed_phy_register()") Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * phy: marvell: fix LED configuration via marvell,reg-initClemens Gruber2016-06-141-12/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Configuring the PHY LED registers for the Marvell 88E1510 and others is not possible, because regardless of the values in marvell,reg-init, it is later overridden in m88e1121_config_aneg with a non-standard default. This patch moves that default configuration to .config_init to allow setting the LED configuration through marvell,reg-init in the device tree, which should override said default if it exists. Signed-off-by: Clemens Gruber <clemens.gruber@pqgruber.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
| * net: phy: smsc: reintroduced unconditional soft resetManfred Schlaegl2016-06-111-13/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We detected some problems using the smsc lan8720a in combination with i.MX28 and tracked this down to commit 21009686662f ("net: phy: smsc: move smsc_phy_config_init reset part in a soft_reset function") With 2100968666 the generic soft reset is replaced by a specific function which handles power down state correctly. But additionally the soft reset itself got conditional and is therefore also only performed if the phy is in power down state. This patch keeps the conditional wake up from power down, but re-introduces the unconditional soft reset using the generic soft reset function. It was tested on linux-4.1.25 and linux-4.7.0-rc2. Signed-off-by: Manfred Schlaegl <manfred.schlaegl@ginzinger.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | phy: improve safety of fixed-phy MII register readingRussell King2016-06-271-7/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is no prevention of a concurrent call to both fixed_mdio_read() and fixed_phy_update_state(), which can result in the state being modified while it's being inspected. Fix this by using a seqcount to detect modifications, and memcpy()ing the state. We remain slightly naughty here, calling link_update() and updating the link status within the read-side loop - which would need rework of the design to change. Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
* | phy: generate swphy registers on the flyRussell King2016-06-273-40/+40
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Generate software phy registers as and when requested, rather than duplicating the state in fixed_phy. This allows us to eliminate the duplicate storage of of the same data, which is only different in format. As fixed_phy_update_regs() no longer updates register state, rename it to fixed_phy_update(). Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
* | phy: separate swphy state validation from register generationRussell King2016-06-273-16/+35
| | | | | | | | | | | | | | | | | | | | Separate out the generation of MII registers from the state validation. This allows us to simplify the error handing in fixed_phy() by allowing earlier error detection. Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
* | phy: convert swphy register generation to tabular formRussell King2016-06-271-65/+78
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Convert the swphy register generation to tabular form which allows us to eliminate multiple switch() statements. This results in a smaller object code size, more efficient, and easier to add support for faster speeds. Before: Idx Name Size VMA LMA File off Algn 0 .text 00000164 00000000 00000000 00000034 2**2 text data bss dec hex filename 388 0 0 388 184 swphy.o After: Idx Name Size VMA LMA File off Algn 0 .text 000000fc 00000000 00000000 00000034 2**2 5 .rodata 00000028 00000000 00000000 00000138 2**2 text data bss dec hex filename 324 0 0 324 144 swphy.o Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
* | phy: move fixed_phy MII register generation to a libraryRussell King2016-06-275-93/+143
| | | | | | | | | | | | | | | | | | Move the fixed_phy MII register generation to a library to allow other software phy implementations to use this code. Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
* | mdio: mux: avoid 'maybe-uninitialized' warningArnd Bergmann2016-06-161-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The latest changes to the MDIO code introduced a false-positive warning with gcc-6 (possibly others): drivers/net/phy/mdio-mux.c: In function 'mdio_mux_init': drivers/net/phy/mdio-mux.c:188:3: error: 'parent_bus_node' may be used uninitialized in this function [-Werror=maybe-uninitialized] It's easy to avoid the warning by making sure the parent_bus_node is initialized in both cases at the start of the function, since the later 'of_node_put()' call is also valid for a NULL pointer argument. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Fixes: f20e6657a875 ("mdio: mux: Enhanced MDIO mux framework for integrated multiplexers") Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net: mdio-mux: Add MDIO mux driver for iProc SoCsPramod Kumar2016-06-113-0/+260
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | iProc based SoCs supports the integrated mdio multiplexer which has the bus selection as well as mdio transaction generation logic inside. This multiplexer has child buses for PCIe, SATA, USB and ETH. These buses could be internal or external to SOC where PHYs are attached. These buses could use C-45 or C-22 mdio transaction. Signed-off-by: Pramod Kumar <pramod.kumar@broadcom.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | mdio: mux: Enhanced MDIO mux framework for integrated multiplexersPramod Kumar2016-06-113-12/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | An integrated multiplexer uses same address space for "muxed bus selection" and "generation of mdio transaction" hence its good to register parent bus from mux driver. Hence added a mechanism where mux driver could register a parent bus and pass it down to framework via mdio_mux_init api. Signed-off-by: Pramod Kumar <pramod.kumar@broadcom.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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