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Message-Id: <1406903450-27283-2-git-send-email-svarbanov@mm-sol.com>
Date: Fri, 1 Aug 2014 17:30:48 +0300
From: Stanimir Varbanov <svarbanov@...sol.com>
To: Ian Campbell <ijc+devicetree@...lion.org.uk>,
Pawel Moll <pawel.moll@....com>,
Rob Herring <robh+dt@...nel.org>,
Kumar Gala <galak@...eaurora.org>,
Mark Rutland <mark.rutland@....com>,
Grant Likely <grant.likely@...aro.org>,
Lee Jones <lee.jones@...aro.org>,
Samuel Ortiz <sameo@...ux.intel.com>
Cc: linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
Courtney Cavin <courtney.cavin@...ymobile.com>,
Bjorn Andersson <bjorn.andersson@...ymobile.com>,
Josh Cartwright <joshc@...eaurora.org>,
Stephen Boyd <sboyd@...eaurora.org>,
David Collins <collinsd@...eaurora.org>,
Stanimir Varbanov <svarbanov@...sol.com>
Subject: [PATCH v4 1/3] mfd: add support for Qualcomm SPMI PMICs
From: Josh Cartwright <joshc@...eaurora.org>
The Qualcomm SPMI PMIC chips are components used with the
Snapdragon 800 series SoC family. This driver exists
largely as a glue mfd component, it exists to be an owner
of an SPMI regmap for children devices described in
device tree.
Signed-off-by: Josh Cartwright <joshc@...eaurora.org>
Signed-off-by: Stanimir Varbanov <svarbanov@...sol.com>
Acked-by: Lee Jones <lee.jones@...aro.org>
---
drivers/mfd/Kconfig | 15 +++++++++
drivers/mfd/Makefile | 1 +
drivers/mfd/qcom-spmi-pmic.c | 67 ++++++++++++++++++++++++++++++++++++++++++
3 files changed, 83 insertions(+), 0 deletions(-)
create mode 100644 drivers/mfd/qcom-spmi-pmic.c
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 6cc4b6a..abfe12a 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -524,6 +524,21 @@ config MFD_PM8921_CORE
Say M here if you want to include support for PM8921 chip as a module.
This will build a module called "pm8921-core".
+config MFD_SPMI_PMIC
+ tristate "Qualcomm SPMI PMICs"
+ depends on ARCH_QCOM || COMPILE_TEST
+ depends on OF
+ depends on SPMI
+ select REGMAP_SPMI
+ help
+ This enables support for the Qualcomm SPMI PMICs.
+ These PMICs are currently used with the Snapdragon 800 series of
+ SoCs. Note, that this will only be useful paired with descriptions
+ of the independent functions as children nodes in the device tree.
+
+ Say M here if you want to include support for the SPMI PMIC
+ series as a module. The module will be called "qcom-spmi-pmic".
+
config MFD_RDC321X
tristate "RDC R-321x southbridge"
select MFD_CORE
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index 8afedba..0e7f32e 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -153,6 +153,7 @@ obj-$(CONFIG_MFD_SI476X_CORE) += si476x-core.o
obj-$(CONFIG_MFD_CS5535) += cs5535-mfd.o
obj-$(CONFIG_MFD_OMAP_USB_HOST) += omap-usb-host.o omap-usb-tll.o
obj-$(CONFIG_MFD_PM8921_CORE) += pm8921-core.o ssbi.o
+obj-$(CONFIG_MFD_SPMI_PMIC) += qcom-spmi-pmic.o
obj-$(CONFIG_TPS65911_COMPARATOR) += tps65911-comparator.o
obj-$(CONFIG_MFD_TPS65090) += tps65090.o
obj-$(CONFIG_MFD_AAT2870_CORE) += aat2870-core.o
diff --git a/drivers/mfd/qcom-spmi-pmic.c b/drivers/mfd/qcom-spmi-pmic.c
new file mode 100644
index 0000000..4b8beb2
--- /dev/null
+++ b/drivers/mfd/qcom-spmi-pmic.c
@@ -0,0 +1,67 @@
+/*
+ * 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>
+
+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 device_node *root = sdev->dev.of_node;
+ struct regmap *regmap;
+
+ regmap = devm_regmap_init_spmi_ext(sdev, &spmi_regmap_config);
+ if (IS_ERR(regmap))
+ return PTR_ERR(regmap);
+
+ return of_platform_populate(root, NULL, NULL, &sdev->dev);
+}
+
+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 = {
+ .probe = pmic_spmi_probe,
+ .remove = pmic_spmi_remove,
+ .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@...eaurora.org>");
+MODULE_AUTHOR("Stanimir Varbanov <svarbanov@...sol.com>");
--
1.7.0.4
--
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