kernel/linux.git/drivers/usb/chipidea/ci.h, branch linux-4.4.y

usb: chipidea: Only read/write OTGSC from one place

2017-05-14T11:32:56+00:00

commit f60f8ccd54e03c1afafb2b20ceb029a0eaf7a134 upstream. With the id and vbus detection done via extcon we need to make sure we poll the status of OTGSC properly by considering what the extcon is saying, and not just what the register is saying. Let's move this hw_wait_reg() function to the only place it's used and simplify it for polling the OTGSC register. Then we can make certain we only use the hw_read_otgsc() API to read OTGSC, which will make sure we properly handle extcon events. Acked-by: Peter Chen Cc: Greg Kroah-Hartman Cc: "Ivan T. Ivanov" Fixes: 3ecb3e09b042 ("usb: chipidea: Use extcon framework for VBUS and ID detect") Signed-off-by: Stephen Boyd Signed-off-by: Peter Chen Signed-off-by: Greg Kroah-Hartman

Merge tag 'usb-ci-v4.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb into usb-next

2015-08-14T23:43:09+00:00

Peter writes: USB: chipidea updates for v4.3-rc1 The main changes are adding several system interfaces for tuning performance, and each vendors can adjust them according to their design configurations. Others are tiny improvements, like more well siTD supports, USB_DEVICE_A_HNP_SUPPORT supports, etc.

usb: chipidea: add tx/rx burst size configuration interface

2015-08-14T02:03:58+00:00

The user can adjust it through dts or platform data Signed-off-by: Peter Chen

usb: chipidea: introduce ci_platform_configure

2015-08-14T01:13:11+00:00

It is used to configure controller parameters according to platform data, like speed, stream mode, etc, both host and device's initialization need it, most of code are the same for both roles, with this new interface, it can reduce the duplicated code and be easy to maintain in future. Signed-off-by: Peter Chen

usb: chipidea: add ttctrl.ttha control interface

2015-08-14T01:13:10+00:00

The register of ttctrl.ttha describes like below: - Internal TT Hub Address Representation - RW - Default = 0000000b This field is used to match against the Hub Address field in QH & siTD to determine if the packet is routed to the internal TT for directly attached FS/LS devices. If the Hub Address in the QH or siTD does not match this address then the packet will be broadcast on the High Speed ports destined for a downstream High Speed hub with the address in the QH/siTD. In silicon RTL, this entry only affects QH and siTD, and the hub.addr at both QH and siTD are 0 in ehci core for chipidea (with hcd->has_tt = 1). So, for QH, if the "usage_tt" flag at RTL is 0, set CI_HDRC_SET_NON_ZERO_TTHA will not affect QH (with non-hs device); for siTD, set this flag will change remaining space requirement for the last transaction from 1023 bytes to 188 bytes, it can increase the number of transactions within one frame, ehci periodic schedule code will not queue the packet if the frame space is full, so it is safe to set this flag for siTD. With this flag, it can fix the problem Alan Stern reported below: http://www.spinics.net/lists/linux-usb/msg123125.html And may fix Michael Tessier's problem too. http://www.spinics.net/lists/linux-usb/msg118679.html CC: stern@rowland.harvard.edu CC: michael.tessier@axiontech.ca Signed-off-by: Peter Chen

usb: chipidea: update ci_otg_is_fsm_mode conditions

2015-07-29T14:59:21+00:00

After introduce usb otg properties, update ci_otg_is_fsm_mode conditions to be depending on both usb hardware properties and usb driver config, also resolve a compile issue in debug.c after the API change. Acked-by: Peter Chen Signed-off-by: Li Jun Signed-off-by: Felipe Balbi

usb: chipidea: use hrtimer for otg fsm timers

2015-03-26T09:54:39+00:00

Current otg fsm timers are using controller 1ms irq and count it, this patch is to replace it with hrtimer solution, use one hrtimer for all otg timers. Signed-off-by: Li Jun Signed-off-by: Peter Chen Signed-off-by: Greg Kroah-Hartman

usb: chipidea: add chipidea revision information

2015-03-18T15:19:10+00:00

Define ci_get_revision API to know the controller revision information according to chipidea 1.1a, 2.0a and 2.5a spec. Besides, add one entry at struct ci_hdrc to indicate revision information, it can be used for adding different code for revisions, eg kinds of errata. Reviewed-by: Stefan Agner Signed-off-by: Peter Chen Signed-off-by: Greg Kroah-Hartman

usb: chipidea: add identification registers access APIs

2015-03-18T15:19:10+00:00

Using hw_write_id_reg and hw_read_id_reg to write and read identification registers contents, they can be used to get controller information, change some system configurations, and so on. Reviewed-by: Stefan Agner Signed-off-by: Peter Chen Signed-off-by: Greg Kroah-Hartman

usb: chipidea: add runtime power management support

2015-03-18T15:19:08+00:00

Add runtime power management support. Signed-off-by: Peter Chen Signed-off-by: Greg Kroah-Hartman