kernel/linux.git/drivers/net/dsa/microchip, branch v5.4.50

net: dsa: microchip: enable module autoprobe

2020-02-11T12:35:49+00:00

[ Upstream commit f8c2afa66d5397b0b9293c4347dac6dabb327685 ] This matches /sys/devices/.../spi1.0/modalias content. Fixes: 9b2d9f05cddf ("net: dsa: microchip: add ksz9567 to ksz9477 driver") Fixes: d9033ae95cf4 ("net: dsa: microchip: add KSZ8563 compatibility string") Fixes: 8c29bebb1f8a ("net: dsa: microchip: add KSZ9893 switch support") Fixes: 45316818371d ("net: dsa: add support for ksz9897 ethernet switch") Fixes: b987e98e50ab ("dsa: add DSA switch driver for Microchip KSZ9477") Signed-off-by: Razvan Stefanescu Signed-off-by: Codrin Ciubotariu Reviewed-by: Andrew Lunn Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman

net: dsa: microchip: Add shared regmap mutex

2019-10-17T19:38:46+00:00

The KSZ driver uses one regmap per register width (8/16/32), each with it's own lock, but accessing the same set of registers. In theory, it is possible to create a race condition between these regmaps, although the underlying bus (SPI or I2C) locking should assure nothing bad will really happen and the accesses would be correct. To make the driver do the right thing, add one single shared mutex for all the regmaps used by the driver instead. This assures that even if some future hardware is on a bus which does not serialize the accesses the same way SPI or I2C does, nothing bad will happen. Note that the status_mutex was unused and only initied, hence it was renamed and repurposed as the regmap mutex. Signed-off-by: Marek Vasut Cc: Andrew Lunn Cc: David S. Miller Cc: Florian Fainelli Cc: George McCollister Cc: Tristram Ha Cc: Woojung Huh Reviewed-by: Andrew Lunn Signed-off-by: David S. Miller

net: dsa: microchip: Do not reinit mutexes on KSZ87xx

2019-10-17T19:38:46+00:00

The KSZ87xx driver calls mutex_init() on mutexes already inited in ksz_common.c ksz_switch_register(). Do not do it twice, drop the reinitialization. Signed-off-by: Marek Vasut Cc: Andrew Lunn Cc: David S. Miller Cc: Florian Fainelli Cc: George McCollister Cc: Tristram Ha Cc: Woojung Huh Reviewed-by: Andrew Lunn Signed-off-by: David S. Miller

net: dsa: microchip: Use the correct style for SPDX License Identifier

2019-10-15T21:59:58+00:00

This patch corrects the SPDX License Identifier style in header files related to Distributed Switch Architecture drivers for Microchip KSZ series switch support. For C header files Documentation/process/license-rules.rst mandates C-like comments (opposed to C source files where C++ style should be used) Changes made by using a script provided by Joe Perches here: https://lkml.org/lkml/2019/2/7/46. Suggested-by: Joe Perches Signed-off-by: Nishad Kamdar Signed-off-by: David S. Miller

net: dsa: microchip: Always set regmap stride to 1

2019-09-27T18:21:07+00:00

The regmap stride is set to 1 for regmap describing 8bit registers already. However, for 16/32/64bit registers, the stride is 2/4/8 respectively. This is not correct, as the switch protocol supports unaligned register reads and writes and the KSZ87xx even uses such unaligned register accesses to read e.g. MIB counter. This patch fixes MIB counter access on KSZ87xx. Signed-off-by: Marek Vasut Cc: Andrew Lunn Cc: David S. Miller Cc: Florian Fainelli Cc: George McCollister Cc: Tristram Ha Cc: Vivien Didelot Cc: Woojung Huh Fixes: 46558d601cb6 ("net: dsa: microchip: Initial SPI regmap support") Fixes: 255b59ad0db2 ("net: dsa: microchip: Factor out regmap config generation into common header") Reviewed-by: George McCollister Tested-by: George McCollister Signed-off-by: David S. Miller

net: dsa: microchip: add ksz9567 to ksz9477 driver

2019-09-12T10:36:12+00:00

Add support for the KSZ9567 7-Port Gigabit Ethernet Switch to the ksz9477 driver. The KSZ9567 supports both SPI and I2C. Oddly the ksz9567 is already in the device tree binding documentation. Signed-off-by: George McCollister Reviewed-by: Marek Vasut Reviewed-by: Andrew Lunn Reviewed-by: Florian Fainelli Signed-off-by: David S. Miller

net: dsa: microchip: add KSZ9477 I2C driver

2019-09-12T10:36:12+00:00

Add KSZ9477 I2C driver support. The code ksz9477.c and ksz_common.c are used together to generate the I2C driver. Signed-off-by: Tristram Ha [george.mccollister@gmail.com: bring up to date, use ksz_common regmap macros] Signed-off-by: George McCollister Signed-off-by: David S. Miller

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2019-09-02T18:20:17+00:00

r8152 conflicts are the NAPI fixes in 'net' overlapping with some tasklet stuff in net-next Signed-off-by: David S. Miller

net: dsa: microchip: add KSZ8563 compatibility string

2019-09-01T06:36:37+00:00

It is a 3-Port 10/100 Ethernet Switch with 1588v2 PTP. Signed-off-by: Razvan Stefanescu Signed-off-by: David S. Miller

net: dsa: microchip: fill regmap_config name

2019-08-31T20:19:07+00:00

Use the register value width as the regmap_config name to prevent the following error when the second and third regmap_configs are initialized. "debugfs: Directory '${bus-id}' with parent 'regmap' already present!" Signed-off-by: George McCollister Reviewed-by: Marek Vasut Signed-off-by: David S. Miller