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Message-Id: <20170608220841.26531-5-guodong.xu@linaro.org>
Date: Fri, 9 Jun 2017 06:08:37 +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,
horms+renesas@...ge.net.au, 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 v6 4/8] mfd: hi6421-pmic: 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 integrated devices, such as regulator details,
LDO voltage points.
Signed-off-by: Wang Xiaoyin <hw.wangxiaoyin@...ilicon.com>
Signed-off-by: Guodong Xu <guodong.xu@...aro.org>
Acked-by: Arnd Bergmann <arnd@...db.de>
---
drivers/mfd/hi6421-pmic-core.c | 70 ++++++++++++++++++++++++++++++-----------
include/linux/mfd/hi6421-pmic.h | 5 +++
2 files changed, 57 insertions(+), 18 deletions(-)
diff --git a/drivers/mfd/hi6421-pmic-core.c b/drivers/mfd/hi6421-pmic-core.c
index b1139d4..6fb7ba2 100644
--- a/drivers/mfd/hi6421-pmic-core.c
+++ b/drivers/mfd/hi6421-pmic-core.c
@@ -1,9 +1,9 @@
/*
- * Device driver for Hi6421 IC
+ * Device driver for Hi6421 PMIC
*
* Copyright (c) <2011-2014> HiSilicon Technologies Co., Ltd.
* http://www.hisilicon.com
- * Copyright (c) <2013-2014> Linaro Ltd.
+ * Copyright (c) <2013-2017> Linaro Ltd.
* http://www.linaro.org
*
* Author: Guodong Xu <guodong.xu@...aro.org>
@@ -16,16 +16,20 @@
#include <linux/device.h>
#include <linux/err.h>
#include <linux/mfd/core.h>
+#include <linux/mfd/hi6421-pmic.h>
#include <linux/module.h>
-#include <linux/of.h>
+#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
-#include <linux/mfd/hi6421-pmic.h>
static const struct mfd_cell hi6421_devs[] = {
{ .name = "hi6421-regulator", },
};
+static const struct mfd_cell hi6421v530_devs[] = {
+ { .name = "hi6421v530-regulator", },
+};
+
static const struct regmap_config hi6421_regmap_config = {
.reg_bits = 32,
.reg_stride = 4,
@@ -33,12 +37,33 @@ static const struct regmap_config hi6421_regmap_config = {
.max_register = HI6421_REG_TO_BUS_ADDR(HI6421_REG_MAX),
};
+static const struct of_device_id of_hi6421_pmic_match[] = {
+ {
+ .compatible = "hisilicon,hi6421-pmic",
+ .data = (void *)HI6421
+ },
+ {
+ .compatible = "hisilicon,hi6421v530-pmic",
+ .data = (void *)HI6421_V530
+ },
+ { },
+};
+MODULE_DEVICE_TABLE(of, of_hi6421_pmic_match);
+
static int hi6421_pmic_probe(struct platform_device *pdev)
{
struct hi6421_pmic *pmic;
struct resource *res;
+ const struct of_device_id *id;
+ const struct mfd_cell *subdevs;
+ enum hi6421_type type;
void __iomem *base;
- int ret;
+ int n_subdevs, ret;
+
+ id = of_match_device(of_hi6421_pmic_match, &pdev->dev);
+ if (!id)
+ return -EINVAL;
+ type = (enum hi6421_type)id->data;
pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL);
if (!pmic)
@@ -57,18 +82,33 @@ static int hi6421_pmic_probe(struct platform_device *pdev)
return PTR_ERR(pmic->regmap);
}
- /* set over-current protection debounce 8ms */
- regmap_update_bits(pmic->regmap, HI6421_OCP_DEB_CTRL_REG,
+ platform_set_drvdata(pdev, pmic);
+
+ switch (type) {
+ case HI6421:
+ /* set over-current protection debounce 8ms */
+ regmap_update_bits(pmic->regmap, HI6421_OCP_DEB_CTRL_REG,
(HI6421_OCP_DEB_SEL_MASK
| HI6421_OCP_EN_DEBOUNCE_MASK
| HI6421_OCP_AUTO_STOP_MASK),
(HI6421_OCP_DEB_SEL_8MS
| HI6421_OCP_EN_DEBOUNCE_ENABLE));
- platform_set_drvdata(pdev, pmic);
+ subdevs = hi6421_devs;
+ n_subdevs = ARRAY_SIZE(hi6421_devs);
+ break;
+ case HI6421_V530:
+ subdevs = hi6421v530_devs;
+ n_subdevs = ARRAY_SIZE(hi6421v530_devs);
+ break;
+ default:
+ dev_err(&pdev->dev, "Unknown device type %d\n",
+ (unsigned int)type);
+ return -EINVAL;
+ }
- ret = devm_mfd_add_devices(&pdev->dev, 0, hi6421_devs,
- ARRAY_SIZE(hi6421_devs), NULL, 0, NULL);
+ ret = devm_mfd_add_devices(&pdev->dev, PLATFORM_DEVID_NONE,
+ subdevs, n_subdevs, NULL, 0, NULL);
if (ret) {
dev_err(&pdev->dev, "Failed to add child devices: %d\n", ret);
return ret;
@@ -77,16 +117,10 @@ static int hi6421_pmic_probe(struct platform_device *pdev)
return 0;
}
-static const struct of_device_id of_hi6421_pmic_match_tbl[] = {
- { .compatible = "hisilicon,hi6421-pmic", },
- { },
-};
-MODULE_DEVICE_TABLE(of, of_hi6421_pmic_match_tbl);
-
static struct platform_driver hi6421_pmic_driver = {
.driver = {
- .name = "hi6421_pmic",
- .of_match_table = of_hi6421_pmic_match_tbl,
+ .name = "hi6421_pmic",
+ .of_match_table = of_hi6421_pmic_match,
},
.probe = hi6421_pmic_probe,
};
diff --git a/include/linux/mfd/hi6421-pmic.h b/include/linux/mfd/hi6421-pmic.h
index 587273e..2580c08 100644
--- a/include/linux/mfd/hi6421-pmic.h
+++ b/include/linux/mfd/hi6421-pmic.h
@@ -38,4 +38,9 @@ struct hi6421_pmic {
struct regmap *regmap;
};
+enum hi6421_type {
+ HI6421 = 0,
+ HI6421_V530,
+};
+
#endif /* __HI6421_PMIC_H */
--
2.10.2
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