Re: [RFC v5 net-next 07/13] mfd: ocelot: enable the external switch interface

Lee Jones
2021-12-29T15:24:49Z

On Sat, 18 Dec 2021, Colin Foster wrote:

> Add the ocelot-ext child device to the MFD. This will enable device-tree
> configuration of the MFD to include the external switch, if desired.
>
> Signed-off-by: Colin Foster <colin.foster@in-advantage.com>
> ---
> drivers/mfd/ocelot-core.c | 15 +++++++++++++--
> 1 file changed, 13 insertions(+), 2 deletions(-)

Please squash this into the driver creation patch.

> diff --git a/drivers/mfd/ocelot-core.c b/drivers/mfd/ocelot-core.c
> index 09132ea52760..52aa7b824d02 100644
> --- a/drivers/mfd/ocelot-core.c
> +++ b/drivers/mfd/ocelot-core.c
> @@ -6,6 +6,7 @@
> #include <asm/byteorder.h>
> #include <linux/spi/spi.h>
> #include <linux/kconfig.h>
> +#include <linux/mfd/core.h>
> #include <linux/module.h>
> #include <linux/regmap.h>
>
> @@ -103,6 +104,13 @@ struct regmap *ocelot_mfd_get_regmap_from_resource(struct device *dev,
> }
> EXPORT_SYMBOL(ocelot_mfd_get_regmap_from_resource);
>
> +static const struct mfd_cell vsc7512_devs[] = {
> + {
> + .name = "ocelot-ext-switch",
> + .of_compatible = "mscc,vsc7512-ext-switch",
> + },
> +};
> +
> int ocelot_mfd_init(struct ocelot_mfd_config *config)
> {
> struct device *dev = config->dev;
> @@ -139,7 +147,10 @@ int ocelot_mfd_init(struct ocelot_mfd_config *config)
> return ret;
> }
>
> - /* Create and loop over all child devices here */
> + ret = mfd_add_devices(dev, PLATFORM_DEVID_NONE, vsc7512_devs,
> + ARRAY_SIZE(vsc7512_devs), NULL, 0, NULL);
> +
> + dev_info(dev, "ocelot mfd core setup complete\n");
>
> return 0;
> }
> @@ -147,7 +158,7 @@ EXPORT_SYMBOL(ocelot_mfd_init);
>
> int ocelot_mfd_remove(struct ocelot_mfd_config *config)
> {
> - /* Loop over all children and remove them */
> + mfd_remove_devices(config->dev);
>
> return 0;
> }

--
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
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