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Message-ID: <20170703120155.gqou6tpm2mlygpzu@dell>
Date: Mon, 3 Jul 2017 13:01:55 +0100
From: Lee Jones <lee.jones@...aro.org>
To: Guodong Xu <guodong.xu@...aro.org>
Cc: robh+dt@...nel.org, mark.rutland@....com, xuwei5@...ilicon.com,
catalin.marinas@....com, will.deacon@....com, lgirdwood@...il.com,
broonie@...nel.org, khilman@...libre.com, arnd@...db.de,
gregory.clement@...e-electrons.com, horms+renesas@...ge.net.au,
olof@...om.net, thomas.petazzoni@...e-electrons.com,
yamada.masahiro@...ionext.com, riku.voipio@...aro.org,
treding@...dia.com, krzk@...nel.org, eric@...olt.net,
damm+renesas@...nsource.se, ard.biesheuvel@...aro.org,
linus.walleij@...aro.org, geert+renesas@...der.be,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, hw.wangxiaoyin@...ilicon.com
Subject: Re: [PATCH v6 4/8] mfd: hi6421-pmic: add support for HiSilicon
Hi6421v530
On Mon, 03 Jul 2017, Lee Jones wrote:
> On Fri, 09 Jun 2017, Guodong Xu wrote:
>
> > Add support for HiSilicon Hi6421v530 PMIC. Hi6421v530 communicates with
> > main SoC via memory-mapped I/O.
> >
> > Hi6421v530 and Hi6421 are PMIC chips from the same vendor, HiSilicon,
> > but at different revisions. They share the same memory-mapped I/O
> > design. They differ in integrated devices, such as regulator details,
> > LDO voltage points.
> >
> > Signed-off-by: Wang Xiaoyin <hw.wangxiaoyin@...ilicon.com>
> > Signed-off-by: Guodong Xu <guodong.xu@...aro.org>
> > Acked-by: Arnd Bergmann <arnd@...db.de>
> > ---
> > drivers/mfd/hi6421-pmic-core.c | 70 ++++++++++++++++++++++++++++++-----------
> > include/linux/mfd/hi6421-pmic.h | 5 +++
> > 2 files changed, 57 insertions(+), 18 deletions(-)
>
> For my own reference:
> Acked-for-MFD-by: Lee Jones <lee.jones@...aro.org>
>
> Plan is to apply this set after the merge-window closes.
In order to make this process as easy as possible, can you rebase this
set on v4.13-rc1 and apply my Ack to this patch please?
> > diff --git a/drivers/mfd/hi6421-pmic-core.c b/drivers/mfd/hi6421-pmic-core.c
> > index b1139d4..6fb7ba2 100644
> > --- a/drivers/mfd/hi6421-pmic-core.c
> > +++ b/drivers/mfd/hi6421-pmic-core.c
> > @@ -1,9 +1,9 @@
> > /*
> > - * Device driver for Hi6421 IC
> > + * Device driver for Hi6421 PMIC
> > *
> > * Copyright (c) <2011-2014> HiSilicon Technologies Co., Ltd.
> > * http://www.hisilicon.com
> > - * Copyright (c) <2013-2014> Linaro Ltd.
> > + * Copyright (c) <2013-2017> Linaro Ltd.
> > * http://www.linaro.org
> > *
> > * Author: Guodong Xu <guodong.xu@...aro.org>
> > @@ -16,16 +16,20 @@
> > #include <linux/device.h>
> > #include <linux/err.h>
> > #include <linux/mfd/core.h>
> > +#include <linux/mfd/hi6421-pmic.h>
> > #include <linux/module.h>
> > -#include <linux/of.h>
> > +#include <linux/of_device.h>
> > #include <linux/platform_device.h>
> > #include <linux/regmap.h>
> > -#include <linux/mfd/hi6421-pmic.h>
> >
> > static const struct mfd_cell hi6421_devs[] = {
> > { .name = "hi6421-regulator", },
> > };
> >
> > +static const struct mfd_cell hi6421v530_devs[] = {
> > + { .name = "hi6421v530-regulator", },
> > +};
> > +
> > static const struct regmap_config hi6421_regmap_config = {
> > .reg_bits = 32,
> > .reg_stride = 4,
> > @@ -33,12 +37,33 @@ static const struct regmap_config hi6421_regmap_config = {
> > .max_register = HI6421_REG_TO_BUS_ADDR(HI6421_REG_MAX),
> > };
> >
> > +static const struct of_device_id of_hi6421_pmic_match[] = {
> > + {
> > + .compatible = "hisilicon,hi6421-pmic",
> > + .data = (void *)HI6421
> > + },
> > + {
> > + .compatible = "hisilicon,hi6421v530-pmic",
> > + .data = (void *)HI6421_V530
> > + },
> > + { },
> > +};
> > +MODULE_DEVICE_TABLE(of, of_hi6421_pmic_match);
> > +
> > static int hi6421_pmic_probe(struct platform_device *pdev)
> > {
> > struct hi6421_pmic *pmic;
> > struct resource *res;
> > + const struct of_device_id *id;
> > + const struct mfd_cell *subdevs;
> > + enum hi6421_type type;
> > void __iomem *base;
> > - int ret;
> > + int n_subdevs, ret;
> > +
> > + id = of_match_device(of_hi6421_pmic_match, &pdev->dev);
> > + if (!id)
> > + return -EINVAL;
> > + type = (enum hi6421_type)id->data;
> >
> > pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL);
> > if (!pmic)
> > @@ -57,18 +82,33 @@ static int hi6421_pmic_probe(struct platform_device *pdev)
> > return PTR_ERR(pmic->regmap);
> > }
> >
> > - /* set over-current protection debounce 8ms */
> > - regmap_update_bits(pmic->regmap, HI6421_OCP_DEB_CTRL_REG,
> > + platform_set_drvdata(pdev, pmic);
> > +
> > + switch (type) {
> > + case HI6421:
> > + /* set over-current protection debounce 8ms */
> > + regmap_update_bits(pmic->regmap, HI6421_OCP_DEB_CTRL_REG,
> > (HI6421_OCP_DEB_SEL_MASK
> > | HI6421_OCP_EN_DEBOUNCE_MASK
> > | HI6421_OCP_AUTO_STOP_MASK),
> > (HI6421_OCP_DEB_SEL_8MS
> > | HI6421_OCP_EN_DEBOUNCE_ENABLE));
> >
> > - platform_set_drvdata(pdev, pmic);
> > + subdevs = hi6421_devs;
> > + n_subdevs = ARRAY_SIZE(hi6421_devs);
> > + break;
> > + case HI6421_V530:
> > + subdevs = hi6421v530_devs;
> > + n_subdevs = ARRAY_SIZE(hi6421v530_devs);
> > + break;
> > + default:
> > + dev_err(&pdev->dev, "Unknown device type %d\n",
> > + (unsigned int)type);
> > + return -EINVAL;
> > + }
> >
> > - ret = devm_mfd_add_devices(&pdev->dev, 0, hi6421_devs,
> > - ARRAY_SIZE(hi6421_devs), NULL, 0, NULL);
> > + ret = devm_mfd_add_devices(&pdev->dev, PLATFORM_DEVID_NONE,
> > + subdevs, n_subdevs, NULL, 0, NULL);
> > if (ret) {
> > dev_err(&pdev->dev, "Failed to add child devices: %d\n", ret);
> > return ret;
> > @@ -77,16 +117,10 @@ static int hi6421_pmic_probe(struct platform_device *pdev)
> > return 0;
> > }
> >
> > -static const struct of_device_id of_hi6421_pmic_match_tbl[] = {
> > - { .compatible = "hisilicon,hi6421-pmic", },
> > - { },
> > -};
> > -MODULE_DEVICE_TABLE(of, of_hi6421_pmic_match_tbl);
> > -
> > static struct platform_driver hi6421_pmic_driver = {
> > .driver = {
> > - .name = "hi6421_pmic",
> > - .of_match_table = of_hi6421_pmic_match_tbl,
> > + .name = "hi6421_pmic",
> > + .of_match_table = of_hi6421_pmic_match,
> > },
> > .probe = hi6421_pmic_probe,
> > };
> > diff --git a/include/linux/mfd/hi6421-pmic.h b/include/linux/mfd/hi6421-pmic.h
> > index 587273e..2580c08 100644
> > --- a/include/linux/mfd/hi6421-pmic.h
> > +++ b/include/linux/mfd/hi6421-pmic.h
> > @@ -38,4 +38,9 @@ struct hi6421_pmic {
> > struct regmap *regmap;
> > };
> >
> > +enum hi6421_type {
> > + HI6421 = 0,
> > + HI6421_V530,
> > +};
> > +
> > #endif /* __HI6421_PMIC_H */
>
--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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