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-rw-r--r--drivers/mfd/bcm2835-pm.c74
-rw-r--r--drivers/mfd/intel-m10-bmc.c2
-rw-r--r--drivers/mfd/mfd-core.c31
-rw-r--r--drivers/mfd/qcom-spmi-pmic.c272
4 files changed, 261 insertions, 118 deletions
diff --git a/drivers/mfd/bcm2835-pm.c b/drivers/mfd/bcm2835-pm.c
index 42fe67f1538e..49cd1f03884a 100644
--- a/drivers/mfd/bcm2835-pm.c
+++ b/drivers/mfd/bcm2835-pm.c
@@ -25,9 +25,52 @@ static const struct mfd_cell bcm2835_power_devs[] = {
{ .name = "bcm2835-power" },
};
+static int bcm2835_pm_get_pdata(struct platform_device *pdev,
+ struct bcm2835_pm *pm)
+{
+ if (of_find_property(pm->dev->of_node, "reg-names", NULL)) {
+ struct resource *res;
+
+ pm->base = devm_platform_ioremap_resource_byname(pdev, "pm");
+ if (IS_ERR(pm->base))
+ return PTR_ERR(pm->base);
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "asb");
+ if (res) {
+ pm->asb = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(pm->asb))
+ pm->asb = NULL;
+ }
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
+ "rpivid_asb");
+ if (res) {
+ pm->rpivid_asb = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(pm->rpivid_asb))
+ pm->rpivid_asb = NULL;
+ }
+
+ return 0;
+ }
+
+ /* If no 'reg-names' property is found we can assume we're using old DTB. */
+ pm->base = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(pm->base))
+ return PTR_ERR(pm->base);
+
+ pm->asb = devm_platform_ioremap_resource(pdev, 1);
+ if (IS_ERR(pm->asb))
+ pm->asb = NULL;
+
+ pm->rpivid_asb = devm_platform_ioremap_resource(pdev, 2);
+ if (IS_ERR(pm->rpivid_asb))
+ pm->rpivid_asb = NULL;
+
+ return 0;
+}
+
static int bcm2835_pm_probe(struct platform_device *pdev)
{
- struct resource *res;
struct device *dev = &pdev->dev;
struct bcm2835_pm *pm;
int ret;
@@ -39,10 +82,9 @@ static int bcm2835_pm_probe(struct platform_device *pdev)
pm->dev = dev;
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- pm->base = devm_ioremap_resource(dev, res);
- if (IS_ERR(pm->base))
- return PTR_ERR(pm->base);
+ ret = bcm2835_pm_get_pdata(pdev, pm);
+ if (ret)
+ return ret;
ret = devm_mfd_add_devices(dev, -1,
bcm2835_pm_devs, ARRAY_SIZE(bcm2835_pm_devs),
@@ -50,30 +92,22 @@ static int bcm2835_pm_probe(struct platform_device *pdev)
if (ret)
return ret;
- /* We'll use the presence of the AXI ASB regs in the
+ /*
+ * We'll use the presence of the AXI ASB regs in the
* bcm2835-pm binding as the key for whether we can reference
* the full PM register range and support power domains.
*/
- res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
- if (res) {
- pm->asb = devm_ioremap_resource(dev, res);
- if (IS_ERR(pm->asb))
- return PTR_ERR(pm->asb);
-
- ret = devm_mfd_add_devices(dev, -1,
- bcm2835_power_devs,
- ARRAY_SIZE(bcm2835_power_devs),
- NULL, 0, NULL);
- if (ret)
- return ret;
- }
-
+ if (pm->asb)
+ return devm_mfd_add_devices(dev, -1, bcm2835_power_devs,
+ ARRAY_SIZE(bcm2835_power_devs),
+ NULL, 0, NULL);
return 0;
}
static const struct of_device_id bcm2835_pm_of_match[] = {
{ .compatible = "brcm,bcm2835-pm-wdt", },
{ .compatible = "brcm,bcm2835-pm", },
+ { .compatible = "brcm,bcm2711-pm", },
{},
};
MODULE_DEVICE_TABLE(of, bcm2835_pm_of_match);
diff --git a/drivers/mfd/intel-m10-bmc.c b/drivers/mfd/intel-m10-bmc.c
index 8db3bcf5fccc..f4d0d72573c8 100644
--- a/drivers/mfd/intel-m10-bmc.c
+++ b/drivers/mfd/intel-m10-bmc.c
@@ -26,7 +26,7 @@ static struct mfd_cell m10bmc_d5005_subdevs[] = {
static struct mfd_cell m10bmc_pacn3000_subdevs[] = {
{ .name = "n3000bmc-hwmon" },
{ .name = "n3000bmc-retimer" },
- { .name = "n3000bmc-secure" },
+ { .name = "n3000bmc-sec-update" },
};
static struct mfd_cell m10bmc_n5010_subdevs[] = {
diff --git a/drivers/mfd/mfd-core.c b/drivers/mfd/mfd-core.c
index 684a011a6396..8b058200d5ad 100644
--- a/drivers/mfd/mfd-core.c
+++ b/drivers/mfd/mfd-core.c
@@ -60,12 +60,29 @@ int mfd_cell_disable(struct platform_device *pdev)
EXPORT_SYMBOL(mfd_cell_disable);
#if IS_ENABLED(CONFIG_ACPI)
+struct match_ids_walk_data {
+ struct acpi_device_id *ids;
+ struct acpi_device *adev;
+};
+
+static int match_device_ids(struct acpi_device *adev, void *data)
+{
+ struct match_ids_walk_data *wd = data;
+
+ if (!acpi_match_device_ids(adev, wd->ids)) {
+ wd->adev = adev;
+ return 1;
+ }
+
+ return 0;
+}
+
static void mfd_acpi_add_device(const struct mfd_cell *cell,
struct platform_device *pdev)
{
const struct mfd_cell_acpi_match *match = cell->acpi_match;
- struct acpi_device *parent, *child;
struct acpi_device *adev = NULL;
+ struct acpi_device *parent;
parent = ACPI_COMPANION(pdev->dev.parent);
if (!parent)
@@ -83,14 +100,14 @@ static void mfd_acpi_add_device(const struct mfd_cell *cell,
if (match) {
if (match->pnpid) {
struct acpi_device_id ids[2] = {};
+ struct match_ids_walk_data wd = {
+ .adev = NULL,
+ .ids = ids,
+ };
strlcpy(ids[0].id, match->pnpid, sizeof(ids[0].id));
- list_for_each_entry(child, &parent->children, node) {
- if (!acpi_match_device_ids(child, ids)) {
- adev = child;
- break;
- }
- }
+ acpi_dev_for_each_child(parent, match_device_ids, &wd);
+ adev = wd.adev;
} else {
adev = acpi_find_child_device(parent, match->adr, false);
}
diff --git a/drivers/mfd/qcom-spmi-pmic.c b/drivers/mfd/qcom-spmi-pmic.c
index 1cacc00aa6c9..00003a868d28 100644
--- a/drivers/mfd/qcom-spmi-pmic.c
+++ b/drivers/mfd/qcom-spmi-pmic.c
@@ -3,120 +3,166 @@
* 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
#define PMIC_REV4 0x103
#define PMIC_TYPE 0x104
#define PMIC_SUBTYPE 0x105
+#define PMIC_FAB_ID 0x1f2
#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;
+
+ pmic->name = of_match_device(pmic_spmi_id_table, dev)->compatible;
- ret = regmap_read(map, PMIC_REV2, &rev2);
+ 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;
+
+ if (pmic->subtype == PMI8998_SUBTYPE || pmic->subtype == PM660_SUBTYPE) {
+ ret = regmap_read(map, PMIC_FAB_ID, &pmic->fab_id);
+ if (ret < 0)
+ return ret;
+ }
/*
* In early versions of PM8941 and PM8226, the major revision number
@@ -124,16 +170,50 @@ static void pmic_spmi_show_revid(struct regmap *map, struct device *dev)
* 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;
- if (subtype == PM8110_SUBTYPE)
- minor = rev2;
+ dev_dbg(dev, "%x: %s v%d.%d\n",
+ pmic->subtype, pmic->name, pmic->major, pmic->minor);
- dev_dbg(dev, "%x: %s v%d.%d\n", subtype, name, major, 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 (IS_ERR(sdev))
+ return ERR_CAST(sdev);
+
+ 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,
.val_bits = 8,
@@ -144,14 +224,26 @@ static const struct regmap_config spmi_regmap_config = {
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);
}
generated by cgit v1.2.3 (git 2.39.0) at 2025-01-08 13:09:34 +0300