v4.19.13 snapshot.
diff --git a/drivers/mfd/qcom-spmi-pmic.c b/drivers/mfd/qcom-spmi-pmic.c
new file mode 100644
index 0000000..e2e95de
--- /dev/null
+++ b/drivers/mfd/qcom-spmi-pmic.c
@@ -0,0 +1,157 @@
+/*
+ * Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/spmi.h>
+#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
+#define PM8998_SUBTYPE 0x14
+#define PMI8998_SUBTYPE 0x15
+#define PM8005_SUBTYPE 0x18
+
+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 },
+ { .compatible = "qcom,pm8998", .data = (void *)PM8998_SUBTYPE },
+ { .compatible = "qcom,pmi8998", .data = (void *)PMI8998_SUBTYPE },
+ { .compatible = "qcom,pm8005", .data = (void *)PM8005_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,
+ .max_register = 0xffff,
+ .fast_io = true,
+};
+
+static int pmic_spmi_probe(struct spmi_device *sdev)
+{
+ struct regmap *regmap;
+
+ regmap = devm_regmap_init_spmi_ext(sdev, &spmi_regmap_config);
+ if (IS_ERR(regmap))
+ return PTR_ERR(regmap);
+
+ /* Only the first slave id for a PMIC contains this information */
+ if (sdev->usid % 2 == 0)
+ pmic_spmi_show_revid(regmap, &sdev->dev);
+
+ return devm_of_platform_populate(&sdev->dev);
+}
+
+MODULE_DEVICE_TABLE(of, pmic_spmi_id_table);
+
+static struct spmi_driver pmic_spmi_driver = {
+ .probe = pmic_spmi_probe,
+ .driver = {
+ .name = "pmic-spmi",
+ .of_match_table = pmic_spmi_id_table,
+ },
+};
+module_spmi_driver(pmic_spmi_driver);
+
+MODULE_DESCRIPTION("Qualcomm SPMI PMIC driver");
+MODULE_ALIAS("spmi:spmi-pmic");
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Josh Cartwright <joshc@codeaurora.org>");
+MODULE_AUTHOR("Stanimir Varbanov <svarbanov@mm-sol.com>");