Add support for the RTD1319 platform. Reported-by: kernel test robot <lkp@xxxxxxxxx> Closes: https://lore.kernel.org/oe-kbuild-all/202311061208.hJmxGqym-lkp@xxxxxxxxx/ CC: Thomas Gleixner <tglx@xxxxxxxxxxxxx> CC: Marc Zyngier <maz@xxxxxxxxxx> CC: linux-kernel@xxxxxxxxxxxxxxx Signed-off-by: James Tai <james.tai@xxxxxxxxxxx> --- v1 to v2 change: - Resolved kernel test robot build warnings - Replaced magic number with macro - Fixed code style issues drivers/irqchip/Kconfig | 6 + drivers/irqchip/Makefile | 1 + drivers/irqchip/irq-realtek-rtd1319.c | 218 ++++++++++++++++++++++++++ 3 files changed, 225 insertions(+) create mode 100644 drivers/irqchip/irq-realtek-rtd1319.c diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig index 267c3429b48d..05856ce885fa 100644 --- a/drivers/irqchip/Kconfig +++ b/drivers/irqchip/Kconfig @@ -222,6 +222,12 @@ config REALTEK_DHC_INTC tristate select IRQ_DOMAIN +config REALTEK_RTD1319_INTC + tristate "Realtek RTD1319 interrupt controller" + select REALTEK_DHC_INTC + help + Support for Realtek RTD1319 Interrupt Controller. + config RENESAS_INTC_IRQPIN bool "Renesas INTC External IRQ Pin Support" if COMPILE_TEST select IRQ_DOMAIN diff --git a/drivers/irqchip/Makefile b/drivers/irqchip/Makefile index f6774af7fde2..6a2650b0a924 100644 --- a/drivers/irqchip/Makefile +++ b/drivers/irqchip/Makefile @@ -48,6 +48,7 @@ obj-$(CONFIG_IXP4XX_IRQ) += irq-ixp4xx.o obj-$(CONFIG_JCORE_AIC) += irq-jcore-aic.o obj-$(CONFIG_RDA_INTC) += irq-rda-intc.o obj-$(CONFIG_REALTEK_DHC_INTC) += irq-realtek-intc-common.o +obj-$(CONFIG_REALTEK_RTD1319_INTC) += irq-realtek-rtd1319.o obj-$(CONFIG_RENESAS_INTC_IRQPIN) += irq-renesas-intc-irqpin.o obj-$(CONFIG_RENESAS_IRQC) += irq-renesas-irqc.o obj-$(CONFIG_RENESAS_RZA1_IRQC) += irq-renesas-rza1.o diff --git a/drivers/irqchip/irq-realtek-rtd1319.c b/drivers/irqchip/irq-realtek-rtd1319.c new file mode 100644 index 000000000000..23c13c218b04 --- /dev/null +++ b/drivers/irqchip/irq-realtek-rtd1319.c @@ -0,0 +1,218 @@ +// SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-2-Clause) +/* + * Realtek RTD1319 interrupt controller driver + * + * Copyright (c) 2023 Realtek Semiconductor Corporation + */ + +#include <linux/init.h> +#include <linux/io.h> +#include <linux/irqchip.h> +#include <linux/of_device.h> +#include <linux/platform_device.h> + +#include "irq-realtek-intc-common.h" + +#define ISO_NORMAL_MASK 0xffffcffe +#define ISO_RTC_MASK 0x00003001 +#define MISC_NMI_WDT_MASK 0x00000004 +#define MISC_NORMAL_MASK 0xffffc0d2 +#define MISC_UART1_MASK 0x00000028 +#define MISC_UART2_MASK 0x00002100 + +#define ISO_ISR_EN_OFFSET 0x40 +#define ISO_ISR_OFFSET 0 +#define ISO_ISR_UMSK_OFFSET 0x4 +#define MISC_ISR_EN_OFFSET 0x80 +#define MISC_ISR_OFFSET 0xc +#define MISC_ISR_UMSK_OFFSET 0x8 + +enum rtd1319_iso_isr_bits { + RTD1319_ISO_ISR_TC3_SHIFT = 1, + RTD1319_ISO_ISR_UR0_SHIFT = 2, + RTD1319_ISO_ISR_LSADC0_SHIFT = 3, + RTD1319_ISO_ISR_IRDA_SHIFT = 5, + RTD1319_ISO_ISR_SPI1_SHIFT = 6, + RTD1319_ISO_ISR_WDOG_NMI_SHIFT = 7, + RTD1319_ISO_ISR_I2C0_SHIFT = 8, + RTD1319_ISO_ISR_TC4_SHIFT = 9, + RTD1319_ISO_ISR_TC7_SHIFT = 10, + RTD1319_ISO_ISR_I2C1_SHIFT = 11, + RTD1319_ISO_ISR_RTC_HSEC_SHIFT = 12, + RTD1319_ISO_ISR_RTC_ALARM_SHIFT = 13, + RTD1319_ISO_ISR_GPIOA_SHIFT = 19, + RTD1319_ISO_ISR_GPIODA_SHIFT = 20, + RTD1319_ISO_ISR_ISO_MISC_SHIFT = 21, + RTD1319_ISO_ISR_CBUS_SHIFT = 22, + RTD1319_ISO_ISR_ETN_SHIFT = 23, + RTD1319_ISO_ISR_USB_HOST_SHIFT = 24, + RTD1319_ISO_ISR_USB_U3_DRD_SHIFT = 25, + RTD1319_ISO_ISR_USB_U2_DRD_SHIFT = 26, + RTD1319_ISO_ISR_PORB_HV_SHIFT = 28, + RTD1319_ISO_ISR_PORB_DV_SHIFT = 29, + RTD1319_ISO_ISR_PORB_AV_SHIFT = 30, + RTD1319_ISO_ISR_I2C1_REQ_SHIFT = 31, +}; + +static const u32 rtd1319_iso_isr_to_scpu_int_en_mask[32] = { + [RTD1319_ISO_ISR_SPI1_SHIFT] = BIT(1), + [RTD1319_ISO_ISR_UR0_SHIFT] = BIT(2), + [RTD1319_ISO_ISR_LSADC0_SHIFT] = BIT(3), + [RTD1319_ISO_ISR_IRDA_SHIFT] = BIT(5), + [RTD1319_ISO_ISR_I2C0_SHIFT] = BIT(8), + [RTD1319_ISO_ISR_I2C1_SHIFT] = BIT(11), + [RTD1319_ISO_ISR_RTC_HSEC_SHIFT] = BIT(12), + [RTD1319_ISO_ISR_RTC_ALARM_SHIFT] = BIT(13), + [RTD1319_ISO_ISR_GPIOA_SHIFT] = BIT(19), + [RTD1319_ISO_ISR_GPIODA_SHIFT] = BIT(20), + [RTD1319_ISO_ISR_PORB_HV_SHIFT] = BIT(28), + [RTD1319_ISO_ISR_PORB_DV_SHIFT] = BIT(29), + [RTD1319_ISO_ISR_PORB_AV_SHIFT] = BIT(30), + [RTD1319_ISO_ISR_I2C1_REQ_SHIFT] = BIT(31), +}; + +enum rtd1319_misc_isr_bits { + RTD1319_ISR_WDOG_NMI_SHIFT = 2, + RTD1319_ISR_UR1_SHIFT = 3, + RTD1319_ISR_TC5_SHIFT = 4, + RTD1319_ISR_UR1_TO_SHIFT = 5, + RTD1319_ISR_TC0_SHIFT = 6, + RTD1319_ISR_TC1_SHIFT = 7, + RTD1319_ISR_UR2_SHIFT = 8, + RTD1319_ISR_RTC_HSEC_SHIFT = 9, + RTD1319_ISR_RTC_MIN_SHIFT = 10, + RTD1319_ISR_RTC_HOUR_SHIFT = 11, + RTD1319_ISR_RTC_DATE_SHIFT = 12, + RTD1319_ISR_UR2_TO_SHIFT = 13, + RTD1319_ISR_I2C5_SHIFT = 14, + RTD1319_ISR_I2C3_SHIFT = 23, + RTD1319_ISR_SC0_SHIFT = 24, + RTD1319_ISR_SC1_SHIFT = 25, + RTD1319_ISR_SPI_SHIFT = 27, + RTD1319_ISR_FAN_SHIFT = 29, +}; + +static const u32 rtd1319_misc_isr_to_scpu_int_en_mask[32] = { + [RTD1319_ISR_UR1_SHIFT] = BIT(3), + [RTD1319_ISR_UR1_TO_SHIFT] = BIT(5), + [RTD1319_ISR_UR2_TO_SHIFT] = BIT(6), + [RTD1319_ISR_UR2_SHIFT] = BIT(7), + [RTD1319_ISR_RTC_MIN_SHIFT] = BIT(10), + [RTD1319_ISR_RTC_HOUR_SHIFT] = BIT(11), + [RTD1319_ISR_RTC_DATE_SHIFT] = BIT(12), + [RTD1319_ISR_I2C5_SHIFT] = BIT(14), + [RTD1319_ISR_SC0_SHIFT] = BIT(24), + [RTD1319_ISR_SC1_SHIFT] = BIT(25), + [RTD1319_ISR_SPI_SHIFT] = BIT(27), + [RTD1319_ISR_I2C3_SHIFT] = BIT(28), + [RTD1319_ISR_FAN_SHIFT] = BIT(29), + [RTD1319_ISR_WDOG_NMI_SHIFT] = IRQ_ALWAYS_ENABLED, +}; + +static struct realtek_intc_subset_cfg rtd1319_intc_iso_cfgs[] = { + { ISO_NORMAL_MASK, }, + { ISO_RTC_MASK, }, +}; + +static const struct realtek_intc_info rtd1319_intc_iso_info = { + .isr_offset = ISO_ISR_OFFSET, + .umsk_isr_offset = ISO_ISR_UMSK_OFFSET, + .scpu_int_en_offset = ISO_ISR_EN_OFFSET, + .isr_to_scpu_int_en_mask = rtd1319_iso_isr_to_scpu_int_en_mask, + .cfg = rtd1319_intc_iso_cfgs, + .cfg_num = ARRAY_SIZE(rtd1319_intc_iso_cfgs), +}; + +static struct realtek_intc_subset_cfg rtd1319_intc_misc_cfgs[] = { + { MISC_NORMAL_MASK, }, + { MISC_NMI_WDT_MASK, }, + { MISC_UART1_MASK, }, + { MISC_UART2_MASK, }, +}; + +static const struct realtek_intc_info rtd1319_intc_misc_info = { + .isr_offset = MISC_ISR_OFFSET, + .umsk_isr_offset = MISC_ISR_UMSK_OFFSET, + .scpu_int_en_offset = MISC_ISR_EN_OFFSET, + .isr_to_scpu_int_en_mask = rtd1319_misc_isr_to_scpu_int_en_mask, + .cfg = rtd1319_intc_misc_cfgs, + .cfg_num = ARRAY_SIZE(rtd1319_intc_misc_cfgs), +}; + +static const struct of_device_id realtek_intc_rtd1319_dt_matches[] = { + { + .compatible = "realtek,rtd1319-intc-iso", + .data = &rtd1319_intc_iso_info, + }, { + .compatible = "realtek,rtd1319-intc-misc", + .data = &rtd1319_intc_misc_info, + }, + { /* sentinel */ } +}; + +static int realtek_intc_rtd1319_suspend(struct device *dev) +{ + struct realtek_intc_data *data = dev_get_drvdata(dev); + const struct realtek_intc_info *info = data->info; + + data->saved_en = readl(data->base + info->scpu_int_en_offset); + + writel(DISABLE_INTC, data->base + info->scpu_int_en_offset); + writel(CLEAN_INTC_STATUS, data->base + info->umsk_isr_offset); + writel(CLEAN_INTC_STATUS, data->base + info->isr_offset); + + return 0; +} + +static int realtek_intc_rtd1319_resume(struct device *dev) +{ + struct realtek_intc_data *data = dev_get_drvdata(dev); + const struct realtek_intc_info *info = data->info; + + writel(CLEAN_INTC_STATUS, data->base + info->umsk_isr_offset); + writel(CLEAN_INTC_STATUS, data->base + info->isr_offset); + writel(data->saved_en, data->base + info->scpu_int_en_offset); + + return 0; +} + +static const struct dev_pm_ops realtek_intc_rtd1319_pm_ops = { + .suspend_noirq = realtek_intc_rtd1319_suspend, + .resume_noirq = realtek_intc_rtd1319_resume, +}; + +static int rtd1319_intc_probe(struct platform_device *pdev) +{ + const struct realtek_intc_info *info; + + info = of_device_get_match_data(&pdev->dev); + if (!info) + return -EINVAL; + + return realtek_intc_probe(pdev, info); +} + +static struct platform_driver realtek_intc_rtd1319_driver = { + .probe = rtd1319_intc_probe, + .driver = { + .name = "realtek_intc_rtd1319", + .of_match_table = realtek_intc_rtd1319_dt_matches, + .suppress_bind_attrs = true, + .pm = &realtek_intc_rtd1319_pm_ops, + }, +}; + +static int __init realtek_intc_rtd1319_init(void) +{ + return platform_driver_register(&realtek_intc_rtd1319_driver); +} +core_initcall(realtek_intc_rtd1319_init); + +static void __exit realtek_intc_rtd1319_exit(void) +{ + platform_driver_unregister(&realtek_intc_rtd1319_driver); +} +module_exit(realtek_intc_rtd1319_exit); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("Realtek RTD1319 Interrupt Controller Driver"); -- 2.25.1
