From: Christian Marangi <ansuelsmth@xxxxxxxxx>
Support for Airoha EN7581 Multi Function Device that
expose PINCTRL functionality and PWM functionality.
Signed-off-by: Christian Marangi <ansuelsmth@xxxxxxxxx>
---
drivers/mfd/Kconfig | 8 ++++
drivers/mfd/Makefile | 2 +
drivers/mfd/airoha-en7581-gpio-mfd.c | 72 +++++++++++++++++++++++++++++++++++
include/linux/mfd/airoha-en7581-mfd.h | 9 +++++
4 files changed, 91 insertions(+)
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index f9325bcce1b9..eca221351ab7 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -32,6 +32,14 @@ config MFD_ADP5585
the core APIs _only_, you have to select individual components like
the GPIO and PWM functions under the corresponding menus.
+config MFD_AIROHA_EN7581
+ bool "Airoha EN7581 Multi Function Device"
+ depends on (ARCH_AIROHA || COMPILE_TEST) && OF
+ select MFD_CORE
+ help
+ Support for Airoha EN7581 Multi Function Device that
+ expose PINCTRL functionality and PWM functionality.
+
config MFD_ALTERA_A10SR
bool "Altera Arria10 DevKit System Resource chip"
depends on ARCH_INTEL_SOCFPGA && SPI_MASTER=y && OF
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index 2a9f91e81af8..be8448e81a5b 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -257,6 +257,8 @@ obj-$(CONFIG_INTEL_SOC_PMIC_CHTWC) += intel_soc_pmic_chtwc.o
obj-$(CONFIG_INTEL_SOC_PMIC_CHTDC_TI) += intel_soc_pmic_chtdc_ti.o
obj-$(CONFIG_INTEL_SOC_PMIC_MRFLD) += intel_soc_pmic_mrfld.o
+obj-$(CONFIG_MFD_AIROHA_EN7581) += airoha-en7581-gpio-mfd.o
+
obj-$(CONFIG_MFD_ALTERA_A10SR) += altera-a10sr.o
obj-$(CONFIG_MFD_ALTERA_SYSMGR) += altera-sysmgr.o
obj-$(CONFIG_MFD_STPMIC1) += stpmic1.o
diff --git a/drivers/mfd/airoha-en7581-gpio-mfd.c b/drivers/mfd/airoha-en7581-gpio-mfd.c
new file mode 100644
index 000000000000..88407ce5747e
--- /dev/null
+++ b/drivers/mfd/airoha-en7581-gpio-mfd.c
@@ -0,0 +1,72 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * MFD driver for Airoha EN7581
+ */
+
+#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/mfd/airoha-en7581-mfd.h>
+#include <linux/mfd/core.h>
+#include <linux/module.h>
+
+static struct resource airoha_mfd_pinctrl_intr[] = {
+ {
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static const struct mfd_cell airoha_mfd_devs[] = {
+ {
+ .name = "pinctrl-airoha",
+ .resources = airoha_mfd_pinctrl_intr,
+ .num_resources = ARRAY_SIZE(airoha_mfd_pinctrl_intr),
+ }, {
+ .name = "pwm-airoha",
+ },
+};
+
+static int airoha_mfd_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct airoha_mfd *mfd;
+ int irq;
+
+ mfd = devm_kzalloc(dev, sizeof(*mfd), GFP_KERNEL);
+ if (!mfd)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, mfd);
+
+ mfd->base = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(mfd->base))
+ return PTR_ERR(mfd->base);
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0)
+ return irq;
+
+ airoha_mfd_pinctrl_intr[0].start = irq;
+ airoha_mfd_pinctrl_intr[0].end = irq;
+
+ return devm_mfd_add_devices(dev, PLATFORM_DEVID_AUTO, airoha_mfd_devs,
+ ARRAY_SIZE(airoha_mfd_devs), NULL, 0,
+ NULL);
+}
+
+static const struct of_device_id airoha_mfd_of_match[] = {
+ { .compatible = "airoha,en7581-gpio-sysctl" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, airoha_mfd_of_match);
+
+static struct platform_driver airoha_mfd_driver = {
+ .probe = airoha_mfd_probe,
+ .driver = {
+ .name = KBUILD_MODNAME,
+ .of_match_table = airoha_mfd_of_match,
+ },
+};
+module_platform_driver(airoha_mfd_driver);
+
+MODULE_AUTHOR("Christian Marangi <ansuelsmth@xxxxxxxxx>");
+MODULE_DESCRIPTION("Driver for Airoha EN7581 MFD");
diff --git a/include/linux/mfd/airoha-en7581-mfd.h b/include/linux/mfd/airoha-en7581-mfd.h
new file mode 100644
index 000000000000..25e73952a777
--- /dev/null
+++ b/include/linux/mfd/airoha-en7581-mfd.h
@@ -0,0 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_INCLUDE_MFD_AIROHA_EN7581_MFD_H_
+#define _LINUX_INCLUDE_MFD_AIROHA_EN7581_MFD_H_
+
+struct airoha_mfd {
+ void __iomem *base;
+};
+
+#endif /* _LINUX_INCLUDE_MFD_AIROHA_EN7581_MFD_H_ */
--
2.46.2
