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 bc8be2e593b6..c690378066ac 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -20,6 +20,14 @@ config MFD_CS5535 This is the core driver for CS5535/CS5536 MFD functions. This is necessary for using the board's GPIO and MFGPT functionality. +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 02b651cd7535..075dbff618e0 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -256,6 +256,8 @@ 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_ */ -- 2.46.0