Re: [PATCH v5 05/11] nvmem: Add nvmem_device based consumer apis.

[Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx>]

On 16/06/15 23:49, Stephen Boyd wrote:
> On 05/21/2015 09:43 AM, Srinivas Kandagatla wrote:
> > diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
> > index 8a4b358..68ee8d1 100644
> > --- a/drivers/nvmem/core.c
> > +++ b/drivers/nvmem/core.c
> > @@ -436,6 +436,51 @@ static int __nvmem_device_put(struct nvmem_device *nvmem)
> >   	return 0;
> >   }
> >
> > +static int nvmem_match(struct device *dev, const void *data)
> > +{
> > +	return !strcmp(dev_name(dev), (const char *)data);
>
> Unnecessary cast.
Sure, will fix it.
> > +}
> > +
> > +static struct nvmem_device *nvmem_find(const char *name)
> > +{
> > +	struct device *d;
> > +
> > +	d = class_find_device(&nvmem_class, NULL, (void *)name, nvmem_match);
>
> Unnecessary cast
Will fix it.
> > +
> > +	return d ? to_nvmem_device(d) : NULL;
> > +}
>
> [...]
> > +
> > +void nvmem_device_put(struct nvmem_device *nvmem)
> > +{
> > +	__nvmem_device_put(nvmem);
> > +}
> > +EXPORT_SYMBOL_GPL(nvmem_device_put);
> >
> > +int nvmem_device_cell_read(struct nvmem_device *nvmem,
> > +			   struct nvmem_cell_info *info, void *buf)
> > +{
> > +}
> > +EXPORT_SYMBOL_GPL(nvmem_device_cell_read);
> > +
> > +int nvmem_device_cell_write(struct nvmem_device *nvmem,
> > +			    struct nvmem_cell_info *info, void *buf)
> > +{
> > +}
> > +EXPORT_SYMBOL_GPL(nvmem_device_cell_write);
> > +
> > +int nvmem_device_read(struct nvmem_device *nvmem,
> > +		      unsigned int offset,
> > +		      size_t bytes, void *buf)
> > +{
> > +}
> > +EXPORT_SYMBOL_GPL(nvmem_device_read);
> > +
> > +int nvmem_device_write(struct nvmem_device *nvmem,
> > +		       unsigned int offset,
> > +		       size_t bytes, void *buf)
> > +{
> > +}
> > +EXPORT_SYMBOL_GPL(nvmem_device_write);
>
> Can you please add kernel-doc on these exported APIs?
Thanks for spotting, I will add them.

> > +
> >   static int nvmem_init(void)
> >   {
> >   	return class_register(&nvmem_class);
> > diff --git a/include/linux/nvmem-consumer.h b/include/linux/nvmem-consumer.h
> > index c3fa8c7..66c67ba 100644
> > --- a/include/linux/nvmem-consumer.h
> > +++ b/include/linux/nvmem-consumer.h
> > @@ -23,6 +32,18 @@ void nvmem_cell_put(struct nvmem_cell *cell);
> >   void *nvmem_cell_read(struct nvmem_cell *cell, ssize_t *len);
> >   int nvmem_cell_write(struct nvmem_cell *cell, void *buf, ssize_t len);
> >
> > +/* direct nvmem device read/write interface */
> > +struct nvmem_device *nvmem_device_get(struct device *dev, const char *name);
> > +void nvmem_device_put(struct nvmem_device *nvmem);
> > +int nvmem_device_read(struct nvmem_device *nvmem, unsigned int offset,
> > +		      size_t bytes, void *buf);
> > +int nvmem_device_write(struct nvmem_device *nvmem, unsigned int offset,
> > +		       size_t bytes, void *buf);
> > +int nvmem_device_cell_read(struct nvmem_device *nvmem,
> > +			   struct nvmem_cell_info *info, void *buf);
> > +int nvmem_device_cell_write(struct nvmem_device *nvmem,
> > +			    struct nvmem_cell_info *info, void *buf);
> > +
>
> Can we also have devm_nvmem_*_get() APIs please?
Sure, I will spin it in next version.
> > diff --git a/include/linux/nvmem-provider.h b/include/linux/nvmem-provider.h
> > index 4908b37..7a982cd 100644
> > --- a/include/linux/nvmem-provider.h
> > +++ b/include/linux/nvmem-provider.h
> > @@ -12,15 +12,9 @@
> >   #ifndef _LINUX_NVMEM_PROVIDER_H
> >   #define _LINUX_NVMEM_PROVIDER_H
> >
> > -struct nvmem_device;
> > +#include <linux/nvmem-consumer.h>
> >
> > -struct nvmem_cell_info {
> > -	const char		*name;
> > -	int			offset;
> > -	int			bytes;
> > -	int			bit_offset;
> > -	int			nbits;
> > -};
> > +struct nvmem_device;
>
> Should this diff be part of an earlier patch?
Possibly, something wrong with this diff, I will fix it.
>
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