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Message-Id: <20170526063518.21246-4-guodong.xu@linaro.org>
Date: Fri, 26 May 2017 14:35:15 +0800
From: Guodong Xu <guodong.xu@...aro.org>
To: lee.jones@...aro.org, robh+dt@...nel.org, mark.rutland@....com,
xuwei5@...ilicon.com, catalin.marinas@....com, will.deacon@....com,
lgirdwood@...il.com, broonie@...nel.org, khilman@...libre.com,
arnd@...db.de, gregory.clement@...e-electrons.com, olof@...om.net,
thomas.petazzoni@...e-electrons.com, yamada.masahiro@...ionext.com,
riku.voipio@...aro.org, treding@...dia.com, krzk@...nel.org,
eric@...olt.net, damm+renesas@...nsource.se,
ard.biesheuvel@...aro.org, linus.walleij@...aro.org,
geert+renesas@...der.be
Cc: devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, hw.wangxiaoyin@...ilicon.com,
Guodong Xu <guodong.xu@...aro.org>
Subject: [PATCH 3/6] mfd: hi6421v530: add support for HiSilicon Hi6421v530
Add support for HiSilicon Hi6421v530 PMIC. Hi6421v530 communicates with
main SoC via memory-mapped I/O.
Hi6421v530 and Hi6421 are PMIC chips from the same vendor, HiSilicon, but
at different revisions. They share the same memory-mapped I/O design. They
differ in regulator details, eg. LDO voltage points.
Signed-off-by: Guodong Xu <guodong.xu@...aro.org>
Signed-off-by: Wang Xiaoyin <hw.wangxiaoyin@...ilicon.com>
---
drivers/mfd/Kconfig | 9 +++++
drivers/mfd/Makefile | 1 +
drivers/mfd/hi6421v530-pmic.c | 92 +++++++++++++++++++++++++++++++++++++++++++
3 files changed, 102 insertions(+)
create mode 100644 drivers/mfd/hi6421v530-pmic.c
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 3eb5c93..bdc8304 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -388,6 +388,15 @@ config MFD_HI6421_PMIC
menus in order to enable them.
We communicate with the Hi6421 via memory-mapped I/O.
+config MFD_HI6421V530_PMIC
+ tristate "HiSilicon Hi6421v530 PMU/Codec IC"
+ depends on OF
+ select MFD_CORE
+ select REGMAP_MMIO
+ help
+ Add support for HiSilicon Hi6421v530 PMIC. Hi6421v530 communicates
+ with main SoC via memory-mapped I/O.
+
config MFD_HI655X_PMIC
tristate "HiSilicon Hi655X series PMU/Codec IC"
depends on ARCH_HISI || COMPILE_TEST
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index c16bf1e..cde62fc 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -206,6 +206,7 @@ obj-$(CONFIG_MFD_STW481X) += stw481x.o
obj-$(CONFIG_MFD_IPAQ_MICRO) += ipaq-micro.o
obj-$(CONFIG_MFD_MENF21BMC) += menf21bmc.o
obj-$(CONFIG_MFD_HI6421_PMIC) += hi6421-pmic-core.o
+obj-$(CONFIG_MFD_HI6421V530_PMIC) += hi6421v530-pmic.o
obj-$(CONFIG_MFD_HI655X_PMIC) += hi655x-pmic.o
obj-$(CONFIG_MFD_DLN2) += dln2.o
obj-$(CONFIG_MFD_RT5033) += rt5033.o
diff --git a/drivers/mfd/hi6421v530-pmic.c b/drivers/mfd/hi6421v530-pmic.c
new file mode 100644
index 0000000..651659a
--- /dev/null
+++ b/drivers/mfd/hi6421v530-pmic.c
@@ -0,0 +1,92 @@
+/*
+ * Device driver for Hi6421 IC
+ *
+ * Copyright (c) <2017> HiSilicon Technologies Co., Ltd.
+ * http://www.hisilicon.com
+ * Copyright (c) <2017> Linaro Ltd.
+ * http://www.linaro.org
+ *
+ * Author: Wang Xiaoyin <hw.wangxiaoyin@...ilicon.com>
+ * Guodong Xu <guodong.xu@...aro.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/mfd/core.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/mfd/hi6421-pmic.h>
+
+static const struct mfd_cell hi6421v530_devs[] = {
+ { .name = "hi6421v530-regulator", },
+};
+
+static int hi6421v530_pmic_probe(struct platform_device *pdev)
+{
+ struct hi6421_pmic *pmic;
+ struct resource *res;
+ void __iomem *base;
+ int ret;
+
+ pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL);
+ if (!pmic)
+ return -ENOMEM;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(base))
+ return PTR_ERR(base);
+
+ pmic->regmap = devm_regmap_init_mmio_clk(&pdev->dev, NULL, base,
+ &hi6421_regmap_config);
+ if (IS_ERR(pmic->regmap)) {
+ dev_err(&pdev->dev,
+ "regmap init failed: %ld\n", PTR_ERR(pmic->regmap));
+ return PTR_ERR(pmic->regmap);
+ }
+
+ platform_set_drvdata(pdev, pmic);
+
+ ret = devm_mfd_add_devices(&pdev->dev, 0, hi6421v530_devs,
+ ARRAY_SIZE(hi6421v530_devs), NULL, 0, NULL);
+ if (ret) {
+ dev_err(&pdev->dev, "add mfd devices failed: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static const struct of_device_id of_hi6421v530_pmic_match_tbl[] = {
+ { .compatible = "hisilicon,hi6421v530-pmic", },
+ { },
+};
+MODULE_DEVICE_TABLE(of, of_hi6421v530_pmic_match_tbl);
+
+static struct platform_driver hi6421v530_pmic_driver = {
+ .driver = {
+ .name = "hi6421v530_pmic",
+ .of_match_table = of_hi6421v530_pmic_match_tbl,
+ },
+ .probe = hi6421v530_pmic_probe,
+};
+module_platform_driver(hi6421v530_pmic_driver);
+
+MODULE_AUTHOR("Guodong Xu <guodong.xu@...aro.org>");
+MODULE_DESCRIPTION("Hi6421v530 PMIC driver");
+MODULE_LICENSE("GPL v2");
--
2.10.2
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