kernel/linux.git/drivers/usb/host/bcma-hcd.c, branch v4.9.331

USB: bcma: drop Northstar PHY 2.0 initialization code

2016-09-27T10:20:17+00:00

This driver should initialize controller only, PHY initialization should be handled by separated PHY driver. We already have phy-bcm-ns-usb2 in place so let it makes its duty. Signed-off-by: Rafał Miłecki Signed-off-by: Greg Kroah-Hartman

USB: bcma: support old USB 2.0 controller on Northstar devices

2016-08-15T14:25:59+00:00

Currently bcma-hcd driver handles 3 different bcma cores: 1) BCMA_CORE_USB20_HOST (0x819) 2) BCMA_CORE_NS_USB20 (0x504) 3) BCMA_CORE_NS_USB30 (0x505) The first one was introduced years ago and so far was used on MIPS devices only. All Northstar (ARM) devices were using other two cores which allowed easy implementation of separated initialization paths. It seems however Broadcom decided to reuse this old USB 2.0 controller on some recently introduced cheaper Northstar BCM53573 SoCs. I noticed this on Tenda AC9 (based on BCM47189B0 belonging to BCM53573 family). There is no difference in this old controller core identification between MIPS and ARM devices: they share the same id and revision. We need different controller initialization procedure however. To handle this add a check for architecture and implement required initialization for ARM case. Signed-off-by: Rafał Miłecki Signed-off-by: Greg Kroah-Hartman

USB: bcma: initialize Northstar USB 3.0 controller

2016-08-09T13:59:35+00:00

It's a rather simple controller, we just need to make sure USB is powered (using GPIO pin) and reset bus core. Once this is done it's safe to register XHCI controller and let it init PHY and do its magic. Signed-off-by: Rafał Miłecki Signed-off-by: Greg Kroah-Hartman

USB: bcma: use simpler devm helper for getting vcc GPIO

2016-04-26T23:11:22+00:00

Thanks to switching to devm_gpiod_get: 1) We don't have to pass fwnode pointer 2) We can request initial GPIO value at getting call This was successfully tested on Netgear R6250 (BCM4708). Signed-off-by: Rafał Miłecki Signed-off-by: Greg Kroah-Hartman

USB: bcma: separate code initializing USB 2.0 core

2016-01-25T04:37:47+00:00

This splits one big probing function into two smaller ones. The main one is now responsible for the generic stuff: allocating memory & enabling power using GPIO. The new one contains code that is specific to the USB 2.0 bcma core. This will allow adding support for the USB 3.0 bcma core (handling XHCI) in the future. Signed-off-by: Rafał Miłecki Signed-off-by: Greg Kroah-Hartman

USB: bcma: make helper creating platform dev more generic

2016-01-25T04:37:47+00:00

Having "bool ohci" argument in bcma_hcd_create_pdev function limited it to support two cases only (OHCI and EHCI) and put too much logic in it. Lets make caller pass all required data. This adds few extra arguments to the function call but will allow us to reuse this code and handle more cases in the future (e.g. add XHCI support). Signed-off-by: Rafał Miłecki Signed-off-by: Greg Kroah-Hartman

USB: bcma: switch to GPIO descriptor for power control

2015-12-01T22:48:26+00:00

So far we were using simple (legacy) GPIO functions & some poor logic to control power. It got many drawbacks: we were ignoring OF flags (GPIO_ACTIVE_LOW), we were not setting direction to output and we were assuming gpio_request success all the time. Fix it by switching to gpiod functions and adding appropriate checks. Signed-off-by: Rafał Miłecki Acked-by: Hauke Mehrtens Signed-off-by: Greg Kroah-Hartman

USB: bcma: add support for controlling bus power through GPIO

2015-07-22T22:43:34+00:00

On some boards a GPIO is needed to activate USB controller. Make it possible to specify such a GPIO in device tree. Signed-off-by: Felix Fietkau Signed-off-by: Hauke Mehrtens Signed-off-by: Greg Kroah-Hartman

USB: bcma: add bcm53xx support

2015-07-22T22:43:34+00:00

The Broadcom ARM SoCs with this usb core need a different initialization and they have a different core id. This patch adds support for these USB 2.0 core. Signed-off-by: Felix Fietkau Signed-off-by: Hauke Mehrtens Signed-off-by: Greg Kroah-Hartman

USB: bcma: fix error handling in bcma_hcd_create_pdev()

2015-07-22T22:43:34+00:00

This patch makes bcma_hcd_create_pdev() not return NULL, but a prober error code in case of an error. Signed-off-by: Hauke Mehrtens Signed-off-by: Greg Kroah-Hartman