linux-kernel - Re: [PATCH v4 0/3] Migrate the PCIe-IDIO-24 and WS16C48 GPIO drivers to the regmap API

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Date:   Mon, 6 Mar 2023 16:25:31 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     William Breathitt Gray <william.gray@...aro.org>
Cc:     linus.walleij@...aro.org, brgl@...ev.pl,
        linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        broonie@...nel.org, techsupport@...systems.com,
        pdemetrotion@...systems.com, quarium@...il.com,
        jhentges@...esio.com, jay.dolan@...esio.com
Subject: Re: [PATCH v4 0/3] Migrate the PCIe-IDIO-24 and WS16C48 GPIO drivers
 to the regmap API

On Mon, Mar 06, 2023 at 07:59:50AM -0500, William Breathitt Gray wrote:
> Changes in v4:
>  - Allocate idio24gpio before using it in idio_24_probe()
> Changes in v3:
>  - Drop map from set_type_config() parameter list; regmap can be passed
>    by irq_drv_data instead
>  - Adjust idio_24_set_type_config() for parameter list
>  - Add mutex to prevent clobbering the COS_ENABLE register when masking
>    IRQ and setting their type configuration
> Changes in v2:
>  - Simplify PCIe-IDIO-24 register offset defines to remove superfluous
>    arithmetic
>  - Check for NULL pointer after chip->irq_drv_data allocation
>  - Set gpio_regmap drvdata and use gpio_regmap_get_drvdata() to get the
>    regmap in idio_24_reg_map_xlate()
> 
> The regmap API supports IO port accessors so we can take advantage of
> regmap abstractions rather than handling access to the device registers
> directly in the driver.
> 
> A patch to pass irq_drv_data as a parameter for struct regmap_irq_chip
> set_type_config() is included. This is needed by the
> idio_24_set_type_config() and ws16c48_set_type_config() callbacks in
> order to update the type configuration on their respective devices.
> 
> A patch to migrate the WS16C48 GPIO driver to the regmap API is included
> in this series due to its dependence on the struct regmap_irq_chip
> set_type_config() change.

I have found nothing WRT lock type changes.
Can you shed a light on what's going on here?

-- 
With Best Regards,
Andy Shevchenko