I want to see if Stephen B is now happy with this. Not CC'ing him as a previous review is bad form IMO.
> Some of the PMIC's could have specific regmap configuration > tables in future, so add specific compatible strings for known > PMIC's. Also print runtime detected chip revision information. > > Signed-off-by: Ivan T. Ivanov <[email protected]> > --- > > Changes since v2 > > * Fixed error checks from regmap_reads's. > * Reorganized pmic_spmi_id_table. > * Lower device info print level. > > .../devicetree/bindings/mfd/qcom,spmi-pmic.txt | 19 +++- > drivers/mfd/qcom-spmi-pmic.c | 103 > +++++++++++++++++++-- > 2 files changed, 111 insertions(+), 11 deletions(-) > > diff --git a/Documentation/devicetree/bindings/mfd/qcom,spmi-pmic.txt > b/Documentation/devicetree/bindings/mfd/qcom,spmi-pmic.txt > index 7182b88..6ac06c1 100644 > --- a/Documentation/devicetree/bindings/mfd/qcom,spmi-pmic.txt > +++ b/Documentation/devicetree/bindings/mfd/qcom,spmi-pmic.txt > @@ -15,10 +15,21 @@ each. A function can consume one or more of these > fixed-size register regions. > > Required properties: > - compatible: Should contain one of: > - "qcom,pm8941" > - "qcom,pm8841" > - "qcom,pma8084" > - or generalized "qcom,spmi-pmic". > + "qcom,pm8941", > + "qcom,pm8841", > + "qcom,pma8084", > + "qcom,pm8019", > + "qcom,pm8226", > + "qcom,pm8110", > + "qcom,pma8084", > + "qcom,pmi8962", > + "qcom,pmd9635", > + "qcom,pm8994", > + "qcom,pmi8994", > + "qcom,pm8916", > + "qcom,pm8004", > + "qcom,pm8909", > + or generalized "qcom,spmi-pmic". > - reg: Specifies the SPMI USID slave address for this device. > For more information see: > Documentation/devicetree/bindings/spmi/spmi.txt > diff --git a/drivers/mfd/qcom-spmi-pmic.c b/drivers/mfd/qcom-spmi-pmic.c > index 4b8beb2..af6ac1c 100644 > --- a/drivers/mfd/qcom-spmi-pmic.c > +++ b/drivers/mfd/qcom-spmi-pmic.c > @@ -17,6 +17,100 @@ > #include <linux/regmap.h> > #include <linux/of_platform.h> > > +#define PMIC_REV2 0x101 > +#define PMIC_REV3 0x102 > +#define PMIC_REV4 0x103 > +#define PMIC_TYPE 0x104 > +#define PMIC_SUBTYPE 0x105 > + > +#define PMIC_TYPE_VALUE 0x51 > + > +#define COMMON_SUBTYPE 0x00 > +#define PM8941_SUBTYPE 0x01 > +#define PM8841_SUBTYPE 0x02 > +#define PM8019_SUBTYPE 0x03 > +#define PM8226_SUBTYPE 0x04 > +#define PM8110_SUBTYPE 0x05 > +#define PMA8084_SUBTYPE 0x06 > +#define PMI8962_SUBTYPE 0x07 > +#define PMD9635_SUBTYPE 0x08 > +#define PM8994_SUBTYPE 0x09 > +#define PMI8994_SUBTYPE 0x0a > +#define PM8916_SUBTYPE 0x0b > +#define PM8004_SUBTYPE 0x0c > +#define PM8909_SUBTYPE 0x0d > + > +static const struct of_device_id pmic_spmi_id_table[] = { > + { .compatible = "qcom,spmi-pmic", .data = (void *)COMMON_SUBTYPE }, > + { .compatible = "qcom,pm8941", .data = (void *)PM8941_SUBTYPE }, > + { .compatible = "qcom,pm8841", .data = (void *)PM8841_SUBTYPE }, > + { .compatible = "qcom,pm8019", .data = (void *)PM8019_SUBTYPE }, > + { .compatible = "qcom,pm8226", .data = (void *)PM8226_SUBTYPE }, > + { .compatible = "qcom,pm8110", .data = (void *)PM8110_SUBTYPE }, > + { .compatible = "qcom,pma8084", .data = (void *)PMA8084_SUBTYPE }, > + { .compatible = "qcom,pmi8962", .data = (void *)PMI8962_SUBTYPE }, > + { .compatible = "qcom,pmd9635", .data = (void *)PMD9635_SUBTYPE }, > + { .compatible = "qcom,pm8994", .data = (void *)PM8994_SUBTYPE }, > + { .compatible = "qcom,pmi8994", .data = (void *)PMI8994_SUBTYPE }, > + { .compatible = "qcom,pm8916", .data = (void *)PM8916_SUBTYPE }, > + { .compatible = "qcom,pm8004", .data = (void *)PM8004_SUBTYPE }, > + { .compatible = "qcom,pm8909", .data = (void *)PM8909_SUBTYPE }, > + { } > +}; > + > +static void pmic_spmi_show_revid(struct regmap *map, struct device *dev) > +{ > + unsigned int rev2, minor, major, type, subtype; > + const char *name = "unknown"; > + int ret, i; > + > + ret = regmap_read(map, PMIC_TYPE, &type); > + if (ret < 0) > + return; > + > + if (type != PMIC_TYPE_VALUE) > + return; > + > + ret = regmap_read(map, PMIC_SUBTYPE, &subtype); > + if (ret < 0) > + return; > + > + for (i = 0; i < ARRAY_SIZE(pmic_spmi_id_table); i++) { > + if (subtype == (unsigned long)pmic_spmi_id_table[i].data) > + break; > + } > + > + if (i != ARRAY_SIZE(pmic_spmi_id_table)) > + name = pmic_spmi_id_table[i].compatible; > + > + ret = regmap_read(map, PMIC_REV2, &rev2); > + if (ret < 0) > + return; > + > + ret = regmap_read(map, PMIC_REV3, &minor); > + if (ret < 0) > + return; > + > + ret = regmap_read(map, PMIC_REV4, &major); > + if (ret < 0) > + return; > + > + /* > + * In early versions of PM8941 and PM8226, the major revision number > + * started incrementing from 0 (eg 0 = v1.0, 1 = v2.0). > + * Increment the major revision number here if the chip is an early > + * version of PM8941 or PM8226. > + */ > + if ((subtype == PM8941_SUBTYPE || subtype == PM8226_SUBTYPE) && > + major < 0x02) > + major++; > + > + if (subtype == PM8110_SUBTYPE) > + minor = rev2; > + > + dev_dbg(dev, "%x: %s v%d.%d\n", subtype, name, major, minor); > +} > + > static const struct regmap_config spmi_regmap_config = { > .reg_bits = 16, > .val_bits = 8, > @@ -33,6 +127,8 @@ static int pmic_spmi_probe(struct spmi_device *sdev) > if (IS_ERR(regmap)) > return PTR_ERR(regmap); > > + pmic_spmi_show_revid(regmap, &sdev->dev); > + > return of_platform_populate(root, NULL, NULL, &sdev->dev); > } > > @@ -41,13 +137,6 @@ static void pmic_spmi_remove(struct spmi_device *sdev) > of_platform_depopulate(&sdev->dev); > } > > -static const struct of_device_id pmic_spmi_id_table[] = { > - { .compatible = "qcom,spmi-pmic" }, > - { .compatible = "qcom,pm8941" }, > - { .compatible = "qcom,pm8841" }, > - { .compatible = "qcom,pma8084" }, > - { } > -}; > MODULE_DEVICE_TABLE(of, pmic_spmi_id_table); > > static struct spmi_driver pmic_spmi_driver = { -- Lee Jones Linaro STMicroelectronics Landing Team Lead Linaro.org │ Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
