Hi Geert,
Thanks for the feedback.
> Subject: Re: [PATCH v2 2/4] rtc: pcf85363: Add support for NXP pcf85263 rtc
>
> Hi Biju,
>
> On Thu, Nov 29, 2018 at 6:03 PM Biju Das <biju.das@xxxxxxxxxxxxxx> wrote:
> > Add support for NXP pcf85263 real-time clock. pcf85263 rtc is
> > compatible with pcf85363,except that pcf85363 has additional 64 bytes of
> RAM.
> >
> > 1 byte of nvmem is supported and exposed in sysfs (# is the instance
> > number,starting with 0): /sys/bus/nvmem/devices/pcf85x63-#/nvmem
> >
> > Signed-off-by: Biju Das <biju.das@xxxxxxxxxxxxxx>
> > ---
> > V1-->V2 Incorporated Alexandre and Geert's review comment.
>
> Thanks for the update!
>
> > --- a/drivers/rtc/rtc-pcf85363.c
> > +++ b/drivers/rtc/rtc-pcf85363.c
>
> > @@ -321,15 +344,25 @@ static int pcf85363_probe(struct i2c_client *client,
> > const struct i2c_device_id *id) {
> > struct pcf85363 *pcf85363;
> > - struct nvmem_config nvmem_cfg = {
> > - .name = "pcf85363-",
> > - .word_size = 1,
> > - .stride = 1,
> > - .size = NVRAM_SIZE,
> > - .reg_read = pcf85363_nvram_read,
> > - .reg_write = pcf85363_nvram_write,
> > + const struct regmap_config *regmap_config =
> &pcf_85363_regmap_config;
> > + struct nvmem_config nvmem_cfg[] = {
>
> static?
>
> Although the nvmem_config is copied, and thus static is not needed, I guess
> using static will decrease kernel size.
>
> > + {
> > + .name = "pcf85x63-",
> > + .word_size = 1,
> > + .stride = 1,
> > + .size = 1,
> > + .reg_read = pcf85x63_nvram_read,
> > + .reg_write = pcf85x63_nvram_write,
> > + }, {
> > + .name = "pcf85363-",
> > + .word_size = 1,
> > + .stride = 1,
> > + .size = NVRAM_SIZE,
> > + .reg_read = pcf85363_nvram_read,
> > + .reg_write = pcf85363_nvram_write,
> > + },
> > };
> > - int ret;
> > + int ret, i, num_nvmem = 2;
> >
> > if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
> > return -ENODEV;
> > @@ -339,7 +372,13 @@ static int pcf85363_probe(struct i2c_client *client,
> > if (!pcf85363)
> > return -ENOMEM;
> >
> > - pcf85363->regmap = devm_regmap_init_i2c(client, ®map_config);
> > + if (of_device_get_match_data(&client->dev) ==
> > + &pcf_85263_regmap_config) {
> > + regmap_config = &pcf_85263_regmap_config;
> > + num_nvmem = 1;
>
> I think it's cleaner if you store the full config (regmap_config + num_nvmem)
> in of_device_id.data, instead of just the regmap_config, using
>
> struct pcf85x63_config {
> struct regmap_config regmap;
> unsigned int num_nvram;
> };
>
> static const struct pcf85x63_config pcf85263_config = { ... };
> static const struct pcf85x63_config pcf85363_config = { ... };
>
> static const struct of_device_id dev_ids[] = {
> { .compatible = "nxp,pcf85263", .data = &pcf_85263_config },
> { .compatible = "nxp,pcf85363", .data = &pcf_85363_config },
> { /* sentinel */ }
> };
>
> Then you can just do
>
> struct pcf85x63_config *config = &pcf85363_config; /* default for non-DT
> */
> void *data = of_device_get_match_data(&client->dev);
> if (data)
> config = data;
>
> > + }
Will send V3 with above changes.
Regards,
Biju
[https://www2.renesas.eu/media/email/unicef.jpg]
This Christmas, instead of sending out cards, Renesas Electronics Europe have decided to support Unicef with a donation. For further details click here<https://www.unicef.org/> to find out about the valuable work they do, helping children all over the world.
We would like to take this opportunity to wish you a Merry Christmas and a prosperous New Year.
Renesas Electronics Europe Ltd, Dukes Meadow, Millboard Road, Bourne End, Buckinghamshire, SL8 5FH, UK. Registered in England & Wales under Registered No. 04586709.
