Re: [PATCH] hwmon: corsair-psu: update supported devices

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On Mon, 30 Nov 2020 18:25:30 +0200
Backlund Thomas <tmb@xxxxxx> wrote:

> Den 30.11.2020 kl. 16:49, skrev Wilken Gottwalt:
> > On Mon, 30 Nov 2020 14:43:44 +0200
> > Thomas Backlund <tmb@xxxxxx> wrote:
> >
> >> Den 28.11.2020 kl. 12:35, skrev Wilken Gottwalt:
> >>> On Sat, 28 Nov 2020 02:37:38 -0300
> >>> Jonas Malaco <jonas@xxxxxxxxxxxx> wrote:
> >>>
> >>>> On Thu, Nov 26, 2020 at 8:43 AM Wilken Gottwalt
> >>>> <wilken.gottwalt@xxxxxxxxxx> wrote:
> >>>>> Adds support for another Corsair PSUs series: AX760i, AX860i, AX1200i,
> >>>>> AX1500i and AX1600i. The first 3 power supplies are supported through
> >>>>> the Corsair Link USB Dongle which is some kind of USB/Serial/TTL
> >>>>> converter especially made for the COM ports of these power supplies.
> >>>>> There are 3 known revisions of these adapters. The AX1500i power supply
> >>>>> has revision 3 built into the case and AX1600i is the only one in that
> >>>>> series, which has an unique usb hid id like the RM/RX series.
> >>>> Can I ask what AXi power supplies were tested?
> >>>>
> >>>> I ask because, based on the user-space implementations I am aware of,
> >>>> the AXi dongle protocol appears to be different from the RMi/HXi series.
> >>> I was not able to test this against the AX power supplies, they are really
> >>> hard to find (and are far to expensive). But I went through all these tools
> >>> and stuck to the most common commands, which all 3 series support. Not every
> >>> series supports all commands (there also seem to be different firmwares in
> >>> the micro-conrollers). But this is fine, some sensors will show up as N/A.
> >>> Even my HX850i does not support all commands covered in this driver.
> >>>
> >> What kind of tests do you want / need ?
> >>
> >> I have an AX860i here.
> > Oh nice. Lets start with an usb info dump. Can you give me the full dump of
> > lsusb -vd <device> of the Corsair USB dongle?
> 
> $ lsusb  -vd  1b1c:1c00
> 
> Bus 011 Device 005: ID 1b1c:1c00 Corsair Controller for Corsair Link
> Device Descriptor:
>    bLength                18
>    bDescriptorType         1
>    bcdUSB               1.10
>    bDeviceClass            0
>    bDeviceSubClass         0
>    bDeviceProtocol         0
>    bMaxPacketSize0        64
>    idVendor           0x1b1c Corsair
>    idProduct          0x1c00 Controller for Corsair Link
>    bcdDevice            1.00
>    iManufacturer           1 Silicon Labs
>    iProduct                2 Corsair Link TM USB Dongle
>    iSerial                 3 R7480347
>    bNumConfigurations      1
>    Configuration Descriptor:
>      bLength                 9
>      bDescriptorType         2
>      wTotalLength       0x0020
>      bNumInterfaces          1
>      bConfigurationValue     1
>      iConfiguration          0
>      bmAttributes         0x80
>        (Bus Powered)
>      MaxPower              100mA
>      Interface Descriptor:
>        bLength                 9
>        bDescriptorType         4
>        bInterfaceNumber        0
>        bAlternateSetting       0
>        bNumEndpoints           2
>        bInterfaceClass       255 Vendor Specific Class
>        bInterfaceSubClass      0
>        bInterfaceProtocol      0
>        iInterface              2 Corsair Link TM USB Dongle
>        Endpoint Descriptor:
>          bLength                 7
>          bDescriptorType         5
>          bEndpointAddress     0x81  EP 1 IN
>          bmAttributes            2
>            Transfer Type            Bulk
>            Synch Type               None
>            Usage Type               Data
>          wMaxPacketSize     0x0040  1x 64 bytes
>          bInterval               0
>        Endpoint Descriptor:
>          bLength                 7
>          bDescriptorType         5
>          bEndpointAddress     0x01  EP 1 OUT
>          bmAttributes            2
>            Transfer Type            Bulk
>            Synch Type               None
>            Usage Type               Data
>          wMaxPacketSize     0x0040  1x 64 bytes
>          bInterval               0
> can't get debug descriptor: Resource temporarily unavailable
> Device Status:     0x0000
>    (Bus Powered)

Thank you. Hmm yeah, this dongle has no usb hid part. So this driver will not
work with this dongle for sure. I already have an idea how to support all 3
series, though it involves a lot of testing. I would provide a github repo
with tools and test kernel modules if you are interested. But I don't know
yet how long it will take, I work on other stuff which has a higher prio.

greetings,
Wilken

> --
> 
> Thomas
> 
> 





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