Re: [PATCH V3 2/2] nvmem: add generic driver for devices with MMIO access
From: Randy Dunlap
Date: Mon Feb 20 2023 - 14:56:15 EST
Hi,
On 2/20/23 09:49, Rafał Miłecki wrote:
> +static int mmio_nvmem_write(void *context, unsigned int offset, void *val, size_t bytes)
> +{
> + struct mmio_nvmem *priv = context;
> +
> + switch (priv->io_width) {
> + case 1:
> + case 2:
> + case 4:
> + return -EOPNOTSUPP;
I'm just curious: (since read supports those cases)
what size writes are typically used here?
And what value for priv->io_width?
Thanks.
> + default:
> + memcpy_toio(priv->base + offset, val, bytes);
> + }
> +
> + return 0;
> +}
--
~Randy