Latest NVIDIA GPU cards have a Cypress CCGx Type-C controller
over I2C interface.
This UCSI I2C driver uses I2C bus driver interface for communicating
with Type-C controller.
Signed-off-by: Ajay Gupta
---
Changes from v1 -> v2
Fixed identation in drivers/usb/typec/ucsi/Kconfig
Changes
Latest NVIDIA GPU card has USB Type-C interface. There is a
Type-C controller which can be accessed over I2C.
This driver adds I2C bus driver to communicate with Type-C controller.
I2C client driver will be part of USB Type-C UCSI driver.
Signed-off-by: Ajay Gupta
---
Changes from v1 -> v2
Hi Heikki and Wolfram,
These two changes add support for USB Type-C interface on latest NVIDIA GPU
card.
The Type-C controller used is Cypress CCGx and is over I2C interface.
I2C host controller has known limitation of sending STOP after every read. Since
each read can be of 4 byte maximum
Hi Peter and Andy,
> Shouldn't you return -ETIMEDOUT if count == 0?
> >>> Yes. Good catch. Does the below fix looks ok?
> >>>
> >>> do {
> >>> status = ccg_write(uc, CCGX_RAB_INTR_REG, ,
> sizeof(data));
> >>> if (status < 0)
> >>>
On Fri, 19 Oct 2018, Breno Leitao wrote:
> uref->usage_index can be indirectly controlled by userspace, hence leading
> to a potential exploitation of the Spectre variant 1 vulnerability.
>
> This field is used as an array index by the hiddev_ioctl_usage() function,
> when 'cmd' is either
>From 04fbf78e4e569bf872f1ffcb0a6f9b89569dc913 Mon Sep 17 00:00:00 2001
From: Hal Emmerich
Date: Thu, 19 Jul 2018 21:48:08 -0500
Subject: [PATCH] usb: dwc2: disable power_down on rockchip devices
The bug would let the usb controller enter partial power down,
which was formally known as
On Fri, 26 Oct 2018, Mathias Nyman wrote:
> On 25.10.2018 20:28, Alan Stern wrote:
> > On Thu, 25 Oct 2018, Mathias Nyman wrote:
> >
> >> On 25.10.2018 12:52, Hao Wei Tee wrote:
> >>> On 25/10/18 4:45 PM, Mathias Nyman wrote:
> Reproducing the issue with a recent kernel with xhci traces
On 25.10.2018 20:28, Alan Stern wrote:
On Thu, 25 Oct 2018, Mathias Nyman wrote:
On 25.10.2018 12:52, Hao Wei Tee wrote:
On 25/10/18 4:45 PM, Mathias Nyman wrote:
Reproducing the issue with a recent kernel with xhci traces enabled should show
the reason for EPROTO error.
Add xhci traces
On Thu, Oct 25, 2018 at 03:33:53PM -0700, aj...@nvidia.com wrote:
> Latest NVIDIA GPU cards have a Cypress CCGx Type-C controller
> over I2C interface.
>
> This UCSI I2C driver uses I2C bus driver interface for communicating
> with Type-C controller.
> + /*
> + * Flush CCGx RESPONSE
On Thu, Oct 25, 2018 at 09:55:47PM +, Ajay Gupta wrote:
> Hi Heikki and Andy
> [...]
> > > > Shouldn't you return -ETIMEDOUT if count == 0?
> > > Yes. Good catch. Does the below fix looks ok?
> > >
> > > do {
> > > status = ccg_write(uc, CCGX_RAB_INTR_REG, ,
> > >
On 2018-10-25 23:55, Ajay Gupta wrote:
> Hi Heikki and Andy
> [...]
Shouldn't you return -ETIMEDOUT if count == 0?
>>> Yes. Good catch. Does the below fix looks ok?
>>>
>>> do {
>>> status = ccg_write(uc, CCGX_RAB_INTR_REG, ,
>>> sizeof(data));
>>> if
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