diff options
Diffstat (limited to 'target/linux/ipq807x/patches-5.15/0058-v6.0-mfd-qcom-spmi-pmic-expose-the-PMIC-revid-information.patch')
| -rw-r--r-- | target/linux/ipq807x/patches-5.15/0058-v6.0-mfd-qcom-spmi-pmic-expose-the-PMIC-revid-information.patch | 417 |
1 files changed, 417 insertions, 0 deletions
diff --git a/target/linux/ipq807x/patches-5.15/0058-v6.0-mfd-qcom-spmi-pmic-expose-the-PMIC-revid-information.patch b/target/linux/ipq807x/patches-5.15/0058-v6.0-mfd-qcom-spmi-pmic-expose-the-PMIC-revid-information.patch new file mode 100644 index 0000000000..35e0cc6725 --- /dev/null +++ b/target/linux/ipq807x/patches-5.15/0058-v6.0-mfd-qcom-spmi-pmic-expose-the-PMIC-revid-information.patch @@ -0,0 +1,417 @@ +From 231f6a9f24a5e9b6e7af801ca2377970474cdf59 Mon Sep 17 00:00:00 2001 +From: Caleb Connolly <caleb.connolly@linaro.org> +Date: Fri, 29 Apr 2022 23:08:57 +0100 +Subject: [PATCH] mfd: qcom-spmi-pmic: expose the PMIC revid information to + clients + +Some PMIC functions such as the RRADC need to be aware of the PMIC +chip revision information to implement errata or otherwise adjust +behaviour, export the PMIC information to enable this. + +This is specifically required to enable the RRADC to adjust +coefficients based on which chip fab the PMIC was produced in, +this can vary per unique device and therefore has to be read at +runtime. + +Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org> +Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> +Tested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> +Acked-by: Lee Jones <lee.jones@linaro.org> +Link: https://lore.kernel.org/r/20220429220904.137297-3-caleb.connolly@linaro.org +Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> +--- + drivers/mfd/qcom-spmi-pmic.c | 265 ++++++++++++++++++++---------- + include/soc/qcom/qcom-spmi-pmic.h | 60 +++++++ + 2 files changed, 235 insertions(+), 90 deletions(-) + create mode 100644 include/soc/qcom/qcom-spmi-pmic.h + +--- a/drivers/mfd/qcom-spmi-pmic.c ++++ b/drivers/mfd/qcom-spmi-pmic.c +@@ -3,11 +3,16 @@ + * Copyright (c) 2014, The Linux Foundation. All rights reserved. + */ + ++#include <linux/device.h> ++#include <linux/errno.h> ++#include <linux/gfp.h> + #include <linux/kernel.h> + #include <linux/module.h> + #include <linux/spmi.h> ++#include <linux/types.h> + #include <linux/regmap.h> + #include <linux/of_platform.h> ++#include <soc/qcom/qcom-spmi-pmic.h> + + #define PMIC_REV2 0x101 + #define PMIC_REV3 0x102 +@@ -17,106 +22,140 @@ + + #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 +-#define PM8028_SUBTYPE 0x0e +-#define PM8901_SUBTYPE 0x0f +-#define PM8950_SUBTYPE 0x10 +-#define PMI8950_SUBTYPE 0x11 +-#define PM8998_SUBTYPE 0x14 +-#define PMI8998_SUBTYPE 0x15 +-#define PM8005_SUBTYPE 0x18 +-#define PM660L_SUBTYPE 0x1A +-#define PM660_SUBTYPE 0x1B +-#define PM8150_SUBTYPE 0x1E +-#define PM8150L_SUBTYPE 0x1f +-#define PM8150B_SUBTYPE 0x20 +-#define PMK8002_SUBTYPE 0x21 +-#define PM8009_SUBTYPE 0x24 +-#define PM8150C_SUBTYPE 0x26 +-#define SMB2351_SUBTYPE 0x29 ++#define PMIC_REV4_V2 0x02 ++ ++struct qcom_spmi_dev { ++ int num_usids; ++ struct qcom_spmi_pmic pmic; ++}; ++ ++#define N_USIDS(n) ((void *)n) + + static const struct of_device_id pmic_spmi_id_table[] = { +- { .compatible = "qcom,pm660", .data = (void *)PM660_SUBTYPE }, +- { .compatible = "qcom,pm660l", .data = (void *)PM660L_SUBTYPE }, +- { .compatible = "qcom,pm8004", .data = (void *)PM8004_SUBTYPE }, +- { .compatible = "qcom,pm8005", .data = (void *)PM8005_SUBTYPE }, +- { .compatible = "qcom,pm8019", .data = (void *)PM8019_SUBTYPE }, +- { .compatible = "qcom,pm8028", .data = (void *)PM8028_SUBTYPE }, +- { .compatible = "qcom,pm8110", .data = (void *)PM8110_SUBTYPE }, +- { .compatible = "qcom,pm8150", .data = (void *)PM8150_SUBTYPE }, +- { .compatible = "qcom,pm8150b", .data = (void *)PM8150B_SUBTYPE }, +- { .compatible = "qcom,pm8150c", .data = (void *)PM8150C_SUBTYPE }, +- { .compatible = "qcom,pm8150l", .data = (void *)PM8150L_SUBTYPE }, +- { .compatible = "qcom,pm8226", .data = (void *)PM8226_SUBTYPE }, +- { .compatible = "qcom,pm8841", .data = (void *)PM8841_SUBTYPE }, +- { .compatible = "qcom,pm8901", .data = (void *)PM8901_SUBTYPE }, +- { .compatible = "qcom,pm8909", .data = (void *)PM8909_SUBTYPE }, +- { .compatible = "qcom,pm8916", .data = (void *)PM8916_SUBTYPE }, +- { .compatible = "qcom,pm8941", .data = (void *)PM8941_SUBTYPE }, +- { .compatible = "qcom,pm8950", .data = (void *)PM8950_SUBTYPE }, +- { .compatible = "qcom,pm8994", .data = (void *)PM8994_SUBTYPE }, +- { .compatible = "qcom,pm8998", .data = (void *)PM8998_SUBTYPE }, +- { .compatible = "qcom,pma8084", .data = (void *)PMA8084_SUBTYPE }, +- { .compatible = "qcom,pmd9635", .data = (void *)PMD9635_SUBTYPE }, +- { .compatible = "qcom,pmi8950", .data = (void *)PMI8950_SUBTYPE }, +- { .compatible = "qcom,pmi8962", .data = (void *)PMI8962_SUBTYPE }, +- { .compatible = "qcom,pmi8994", .data = (void *)PMI8994_SUBTYPE }, +- { .compatible = "qcom,pmi8998", .data = (void *)PMI8998_SUBTYPE }, +- { .compatible = "qcom,pmk8002", .data = (void *)PMK8002_SUBTYPE }, +- { .compatible = "qcom,smb2351", .data = (void *)SMB2351_SUBTYPE }, +- { .compatible = "qcom,spmi-pmic", .data = (void *)COMMON_SUBTYPE }, ++ { .compatible = "qcom,pm660", .data = N_USIDS(2) }, ++ { .compatible = "qcom,pm660l", .data = N_USIDS(2) }, ++ { .compatible = "qcom,pm8004", .data = N_USIDS(2) }, ++ { .compatible = "qcom,pm8005", .data = N_USIDS(2) }, ++ { .compatible = "qcom,pm8019", .data = N_USIDS(2) }, ++ { .compatible = "qcom,pm8028", .data = N_USIDS(2) }, ++ { .compatible = "qcom,pm8110", .data = N_USIDS(2) }, ++ { .compatible = "qcom,pm8150", .data = N_USIDS(2) }, ++ { .compatible = "qcom,pm8150b", .data = N_USIDS(2) }, ++ { .compatible = "qcom,pm8150c", .data = N_USIDS(2) }, ++ { .compatible = "qcom,pm8150l", .data = N_USIDS(2) }, ++ { .compatible = "qcom,pm8226", .data = N_USIDS(2) }, ++ { .compatible = "qcom,pm8841", .data = N_USIDS(2) }, ++ { .compatible = "qcom,pm8901", .data = N_USIDS(2) }, ++ { .compatible = "qcom,pm8909", .data = N_USIDS(2) }, ++ { .compatible = "qcom,pm8916", .data = N_USIDS(2) }, ++ { .compatible = "qcom,pm8941", .data = N_USIDS(2) }, ++ { .compatible = "qcom,pm8950", .data = N_USIDS(2) }, ++ { .compatible = "qcom,pm8994", .data = N_USIDS(2) }, ++ { .compatible = "qcom,pm8998", .data = N_USIDS(2) }, ++ { .compatible = "qcom,pma8084", .data = N_USIDS(2) }, ++ { .compatible = "qcom,pmd9635", .data = N_USIDS(2) }, ++ { .compatible = "qcom,pmi8950", .data = N_USIDS(2) }, ++ { .compatible = "qcom,pmi8962", .data = N_USIDS(2) }, ++ { .compatible = "qcom,pmi8994", .data = N_USIDS(2) }, ++ { .compatible = "qcom,pmi8998", .data = N_USIDS(2) }, ++ { .compatible = "qcom,pmk8002", .data = N_USIDS(2) }, ++ { .compatible = "qcom,smb2351", .data = N_USIDS(2) }, ++ { .compatible = "qcom,spmi-pmic", .data = N_USIDS(1) }, + { } + }; + +-static void pmic_spmi_show_revid(struct regmap *map, struct device *dev) ++/* ++ * A PMIC can be represented by multiple SPMI devices, but ++ * only the base PMIC device will contain a reference to ++ * the revision information. ++ * ++ * This function takes a pointer to a pmic device and ++ * returns a pointer to the base PMIC device. ++ * ++ * This only supports PMICs with 1 or 2 USIDs. ++ */ ++static struct spmi_device *qcom_pmic_get_base_usid(struct device *dev) + { +- unsigned int rev2, minor, major, type, subtype; +- const char *name = "unknown"; +- int ret, i; ++ struct spmi_device *sdev; ++ struct qcom_spmi_dev *ctx; ++ struct device_node *spmi_bus; ++ struct device_node *other_usid = NULL; ++ int function_parent_usid, ret; ++ u32 pmic_addr; + +- ret = regmap_read(map, PMIC_TYPE, &type); +- if (ret < 0) +- return; ++ sdev = to_spmi_device(dev); ++ ctx = dev_get_drvdata(&sdev->dev); + +- if (type != PMIC_TYPE_VALUE) +- return; ++ /* ++ * Quick return if the function device is already in the base ++ * USID. This will always be hit for PMICs with only 1 USID. ++ */ ++ if (sdev->usid % ctx->num_usids == 0) ++ return sdev; + +- ret = regmap_read(map, PMIC_SUBTYPE, &subtype); ++ function_parent_usid = sdev->usid; ++ ++ /* ++ * Walk through the list of PMICs until we find the sibling USID. ++ * The goal is to find the first USID which is less than the ++ * number of USIDs in the PMIC array, e.g. for a PMIC with 2 USIDs ++ * where the function device is under USID 3, we want to find the ++ * device for USID 2. ++ */ ++ spmi_bus = of_get_parent(sdev->dev.of_node); ++ do { ++ other_usid = of_get_next_child(spmi_bus, other_usid); ++ ++ ret = of_property_read_u32_index(other_usid, "reg", 0, &pmic_addr); ++ if (ret) ++ return ERR_PTR(ret); ++ ++ sdev = spmi_device_from_of(other_usid); ++ if (pmic_addr == function_parent_usid - (ctx->num_usids - 1)) { ++ if (!sdev) ++ /* ++ * If the base USID for this PMIC hasn't probed yet ++ * but the secondary USID has, then we need to defer ++ * the function driver so that it will attempt to ++ * probe again when the base USID is ready. ++ */ ++ return ERR_PTR(-EPROBE_DEFER); ++ return sdev; ++ } ++ } while (other_usid->sibling); ++ ++ return ERR_PTR(-ENODATA); ++} ++ ++static int pmic_spmi_load_revid(struct regmap *map, struct device *dev, ++ struct qcom_spmi_pmic *pmic) ++{ ++ int ret; ++ ++ ret = regmap_read(map, PMIC_TYPE, &pmic->type); + if (ret < 0) +- return; ++ return ret; + +- for (i = 0; i < ARRAY_SIZE(pmic_spmi_id_table); i++) { +- if (subtype == (unsigned long)pmic_spmi_id_table[i].data) +- break; +- } ++ if (pmic->type != PMIC_TYPE_VALUE) ++ return ret; + +- if (i != ARRAY_SIZE(pmic_spmi_id_table)) +- name = pmic_spmi_id_table[i].compatible; ++ ret = regmap_read(map, PMIC_SUBTYPE, &pmic->subtype); ++ if (ret < 0) ++ return ret; + +- ret = regmap_read(map, PMIC_REV2, &rev2); ++ pmic->name = of_match_device(pmic_spmi_id_table, dev)->compatible; ++ ++ ret = regmap_read(map, PMIC_REV2, &pmic->rev2); + if (ret < 0) +- return; ++ return ret; + +- ret = regmap_read(map, PMIC_REV3, &minor); ++ ret = regmap_read(map, PMIC_REV3, &pmic->minor); + if (ret < 0) +- return; ++ return ret; + +- ret = regmap_read(map, PMIC_REV4, &major); ++ ret = regmap_read(map, PMIC_REV4, &pmic->major); + if (ret < 0) +- return; ++ return ret; + + /* + * In early versions of PM8941 and PM8226, the major revision number +@@ -124,15 +163,49 @@ static void pmic_spmi_show_revid(struct + * 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 ((pmic->subtype == PM8941_SUBTYPE || pmic->subtype == PM8226_SUBTYPE) && ++ pmic->major < PMIC_REV4_V2) ++ pmic->major++; ++ ++ if (pmic->subtype == PM8110_SUBTYPE) ++ pmic->minor = pmic->rev2; ++ ++ dev_dbg(dev, "%x: %s v%d.%d\n", ++ pmic->subtype, pmic->name, pmic->major, pmic->minor); ++ ++ return 0; ++} ++ ++/** ++ * qcom_pmic_get() - Get a pointer to the base PMIC device ++ * ++ * This function takes a struct device for a driver which is a child of a PMIC. ++ * And locates the PMIC revision information for it. ++ * ++ * @dev: the pmic function device ++ * @return: the struct qcom_spmi_pmic* pointer associated with the function device ++ */ ++const struct qcom_spmi_pmic *qcom_pmic_get(struct device *dev) ++{ ++ struct spmi_device *sdev; ++ struct qcom_spmi_dev *spmi; ++ ++ /* ++ * Make sure the device is actually a child of a PMIC ++ */ ++ if (!of_match_device(pmic_spmi_id_table, dev->parent)) ++ return ERR_PTR(-EINVAL); ++ ++ sdev = qcom_pmic_get_base_usid(dev->parent); + +- if (subtype == PM8110_SUBTYPE) +- minor = rev2; ++ if (IS_ERR(sdev)) ++ return ERR_CAST(sdev); + +- dev_dbg(dev, "%x: %s v%d.%d\n", subtype, name, major, minor); ++ spmi = dev_get_drvdata(&sdev->dev); ++ ++ return &spmi->pmic; + } ++EXPORT_SYMBOL(qcom_pmic_get); + + static const struct regmap_config spmi_regmap_config = { + .reg_bits = 16, +@@ -144,14 +217,26 @@ static const struct regmap_config spmi_r + static int pmic_spmi_probe(struct spmi_device *sdev) + { + struct regmap *regmap; ++ struct qcom_spmi_dev *ctx; ++ int ret; + + regmap = devm_regmap_init_spmi_ext(sdev, &spmi_regmap_config); + if (IS_ERR(regmap)) + return PTR_ERR(regmap); + ++ ctx = devm_kzalloc(&sdev->dev, sizeof(*ctx), GFP_KERNEL); ++ if (!ctx) ++ return -ENOMEM; ++ ++ ctx->num_usids = (uintptr_t)of_device_get_match_data(&sdev->dev); ++ + /* Only the first slave id for a PMIC contains this information */ +- if (sdev->usid % 2 == 0) +- pmic_spmi_show_revid(regmap, &sdev->dev); ++ if (sdev->usid % ctx->num_usids == 0) { ++ ret = pmic_spmi_load_revid(regmap, &sdev->dev, &ctx->pmic); ++ if (ret < 0) ++ return ret; ++ } ++ spmi_device_set_drvdata(sdev, ctx); + + return devm_of_platform_populate(&sdev->dev); + } +--- /dev/null ++++ b/include/soc/qcom/qcom-spmi-pmic.h +@@ -0,0 +1,60 @@ ++/* SPDX-License-Identifier: GPL-2.0-only */ ++/* Copyright (c) 2022 Linaro. All rights reserved. ++ * Author: Caleb Connolly <caleb.connolly@linaro.org> ++ */ ++ ++#ifndef __QCOM_SPMI_PMIC_H__ ++#define __QCOM_SPMI_PMIC_H__ ++ ++#include <linux/device.h> ++ ++#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 ++#define PM8028_SUBTYPE 0x0e ++#define PM8901_SUBTYPE 0x0f ++#define PM8950_SUBTYPE 0x10 ++#define PMI8950_SUBTYPE 0x11 ++#define PM8998_SUBTYPE 0x14 ++#define PMI8998_SUBTYPE 0x15 ++#define PM8005_SUBTYPE 0x18 ++#define PM660L_SUBTYPE 0x1A ++#define PM660_SUBTYPE 0x1B ++#define PM8150_SUBTYPE 0x1E ++#define PM8150L_SUBTYPE 0x1f ++#define PM8150B_SUBTYPE 0x20 ++#define PMK8002_SUBTYPE 0x21 ++#define PM8009_SUBTYPE 0x24 ++#define PM8150C_SUBTYPE 0x26 ++#define SMB2351_SUBTYPE 0x29 ++ ++#define PMI8998_FAB_ID_SMIC 0x11 ++#define PMI8998_FAB_ID_GF 0x30 ++ ++#define PM660_FAB_ID_GF 0x0 ++#define PM660_FAB_ID_TSMC 0x2 ++#define PM660_FAB_ID_MX 0x3 ++ ++struct qcom_spmi_pmic { ++ unsigned int type; ++ unsigned int subtype; ++ unsigned int major; ++ unsigned int minor; ++ unsigned int rev2; ++ const char *name; ++}; ++ ++const struct qcom_spmi_pmic *qcom_pmic_get(struct device *dev); ++ ++#endif /* __QCOM_SPMI_PMIC_H__ */ |