On Fri, Jun 09, 2017 at 10:35:15AM +0100, Srinivas Kandagatla wrote:
>
> Few more nit picks!!
>
> On 08/06/17 17:51, Oleksij Rempel wrote:
> > This is a driver for Low Power General Purpose Register (LPGPR)
> > available on i.MX6 SoCs in Secure Non-Volatile Storage (SNVS)
> > of this chip.
> >
> > It is a 32-bit read/write register located in the low power domain.
> > Since LPGPR is located in the battery-backed power domain, LPGPR can
> > be used by any application for retaining data during an SoC power-down
.....
> > --- a/drivers/nvmem/Kconfig
> > +++ b/drivers/nvmem/Kconfig
> > @@ -144,4 +144,14 @@ config MESON_EFUSE
> > This driver can also be built as a module. If so, the module
> > will be called nvmem_meson_efuse.
> > +config NVMEM_SNVS_LPGPR
> > + tristate "Support for Low Power General Purpose Register"
> > + depends on SOC_IMX6 || COMPILE_TEST
>
> shouldn't you either "select MFD_SYSCON" or "depends on MFD_SYSCON"
> here.
according to Documentation/kbuild/kconfig-language.txt
"In general use select only for non-visible symbols
(no prompts anywhere) and for symbols with no dependencies."
this is why I removed select.
And SOC_IMX6 is already doing "select MFD_SYSCON", so I assume it should
be enough to depend on it.
Or do I miss some thing?
> > + help
> > + This is a driver for Low Power General Purpose Register (LPGPR) available on
> > + i.MX6 SoCs in Secure Non-Volatile Storage (SNVS) of this chip.
> > +
> > + This driver can also be built as a module. If so, the module
> > + will be called nvmem-snvs-lpgpr.
> > +
> > endif
....
> > diff --git a/drivers/nvmem/Makefile b/drivers/nvmem/Makefile
> > index 173140658693..4c589184acee 100644
> > --- a/drivers/nvmem/Makefile
> > +++ b/drivers/nvmem/Makefile
> > +
> > +struct snvs_lpgpr_priv {
> > + struct device_d *dev;
> > + struct regmap *regmap;
> > + int offset;
>
> why do you need offset here, you already have access to cfg which has the
> offset member.
yes, you right. I'll update it.
>
> > + struct nvmem_config cfg;
> > +};
> > +
> > +struct snvs_lpgpr_cfg {
> > + int offset;
> > +};
> > +
> > +static const struct snvs_lpgpr_cfg snvs_lpgpr_cfg_imx6q = {
> > + .offset = 0x68,
> > +};
> > +
....
> > +
> > + return 0;
> > +}
> > +
> > +static int snvs_lpgpr_read(void *context, unsigned int offset, void *_val,
> > + size_t bytes)
> > +{
> > +
> > +static struct platform_driver snvs_lpgpr_driver = {
> > + .probe = snvs_lpgpr_probe,
> > + .remove = snvs_lpgpr_remove,
> > + .driver = {
> > + .name = "snvs_lpgpr",
> > + .of_match_table = snvs_lpgpr_dt_ids,
> > + },
> > +};
> > +module_platform_driver(snvs_lpgpr_driver);
> > +
> > +MODULE_AUTHOR("Oleksij Rempel <o.rempel@xxxxxxxxxxxxxx>");
> > +MODULE_DESCRIPTION("Low Power General Purpose Register in i.MX6 Secure Non-Volatile Storage");
> > +MODULE_LICENSE("GPL v2");
> >
>
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