Re: [PATCH 04/10] input: iqs5xx: Expose firmware revision to user space
From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Date: 2021-01-25 04:22:49
From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Date: 2021-01-25 04:22:49
Hi Jeff, On Mon, Jan 18, 2021 at 02:43:40PM -0600, Jeff LaBundy wrote:
The device's firmware accommodates a revision field that customers can assign when firmware is exported from the vendor's development tool. Having the ability to read this field from user space can be useful during development. As such, promote the fw_file attribute from W/O to R/W. Writing to the attribute pushes firmware to the device as normal, but reading from it will now return the customer-assigned revision field as an unsigned integer (e.g. 256 = 1.0, 257 = 1.1 and so on).
No, let's not overload this attribute and instead create a dedicated fw_version or similar read-only attribute to expose active firmware version to userspace. Thanks. -- Dmitry