| Message ID | 20170720073242.1758-4-guodong.xu@linaro.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Thu, 20 Jul 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@hisilicon.com> > Signed-off-by: Guodong Xu <guodong.xu@linaro.org> > Acked-by: Arnd Bergmann <arnd@arndb.de> > --- > drivers/mfd/hi6421-pmic-core.c | 70 ++++++++++++++++++++++++++++++----------- > include/linux/mfd/hi6421-pmic.h | 5 +++ > 2 files changed, 57 insertions(+), 18 deletions(-) Applied, thanks. > 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@linaro.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 */
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@linaro.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 */