From patchwork Wed Nov 10 22:58:02 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lad Prabhakar X-Patchwork-Id: 1553655 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-gpio-owner@vger.kernel.org; receiver=) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by bilbo.ozlabs.org (Postfix) with ESMTP id 4HqKyS06bFz9sVc for ; Thu, 11 Nov 2021 09:58:24 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233982AbhKJXBK (ORCPT ); Wed, 10 Nov 2021 18:01:10 -0500 Received: from relmlor2.renesas.com ([210.160.252.172]:15510 "EHLO relmlie6.idc.renesas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S233848AbhKJXBK (ORCPT ); Wed, 10 Nov 2021 18:01:10 -0500 X-IronPort-AV: E=Sophos;i="5.87,225,1631545200"; d="scan'208";a="100143741" Received: from unknown (HELO relmlir5.idc.renesas.com) ([10.200.68.151]) by relmlie6.idc.renesas.com with ESMTP; 11 Nov 2021 07:58:21 +0900 Received: from localhost.localdomain (unknown [10.226.36.204]) by relmlir5.idc.renesas.com (Postfix) with ESMTP id 650834006CC7; Thu, 11 Nov 2021 07:58:18 +0900 (JST) From: Lad Prabhakar To: Marc Zyngier , Thomas Gleixner , Rob Herring , Linus Walleij , Geert Uytterhoeven , Magnus Damm , Bartosz Golaszewski , Philipp Zabel Cc: devicetree@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, Prabhakar , Biju Das , Lad Prabhakar Subject: [RFC PATCH v3 1/7] dt-bindings: interrupt-controller: Add Renesas RZ/G2L Interrupt Controller Date: Wed, 10 Nov 2021 22:58:02 +0000 Message-Id: <20211110225808.16388-2-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20211110225808.16388-1-prabhakar.mahadev-lad.rj@bp.renesas.com> References: <20211110225808.16388-1-prabhakar.mahadev-lad.rj@bp.renesas.com> Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org Add DT bindings for the Renesas RZ/G2L Interrupt Controller. Signed-off-by: Lad Prabhakar --- .../renesas,rzg2l-irqc.yaml | 137 ++++++++++++++++++ 1 file changed, 137 insertions(+) create mode 100644 Documentation/devicetree/bindings/interrupt-controller/renesas,rzg2l-irqc.yaml diff --git a/Documentation/devicetree/bindings/interrupt-controller/renesas,rzg2l-irqc.yaml b/Documentation/devicetree/bindings/interrupt-controller/renesas,rzg2l-irqc.yaml new file mode 100644 index 000000000000..ebe318fe336b --- /dev/null +++ b/Documentation/devicetree/bindings/interrupt-controller/renesas,rzg2l-irqc.yaml @@ -0,0 +1,137 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/interrupt-controller/renesas,rzg2l-irqc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Renesas RZ/G2L Interrupt Controller + +maintainers: + - Lad Prabhakar + - Geert Uytterhoeven + +description: | + The RZ/G2L Interrupt Controller is a front-end for the GIC found on Renesas RZ/G2L SoC's + - IRQ sense select for 8 external interrupts, mapped to 8 GIC SPI interrupts + - GPIO pins used as external interrupt input pins, mapped to 32 GIC SPI interrupts + - NMI edge select (NMI is not treated as NMI exception and supports fall edge and + stand-up edge detection interrupts) + +allOf: + - $ref: /schemas/interrupt-controller.yaml# + +properties: + compatible: + items: + - enum: + - renesas,r9a07g044-irqc # RZ/G2L + - const: renesas,rzg2l-irqc + + '#interrupt-cells': + const: 2 + + '#address-cells': + const: 0 + + interrupt-controller: true + + reg: + maxItems: 1 + + interrupt-map: + maxItems: 41 + description: Specifies the mapping from external interrupts to GIC interrupts. + + interrupt-map-mask: + items: + - const: 40 + - const: 0 + + clocks: + maxItems: 2 + + clock-names: + items: + - const: clk + - const: pclk + + power-domains: + maxItems: 1 + + resets: + maxItems: 1 + +required: + - compatible + - '#interrupt-cells' + - '#address-cells' + - interrupt-controller + - reg + - interrupt-map + - interrupt-map-mask + - clocks + - clock-names + - power-domains + - resets + +additionalProperties: false + +examples: + - | + #include + #include + + irqc: interrupt-controller@110a0000 { + compatible = "renesas,r9a07g044-irqc", "renesas,rzg2l-irqc"; + #interrupt-cells = <2>; + #address-cells = <0>; + interrupt-controller; + reg = <0x110a0000 0x10000>; + interrupt-map = <0 0 &gic GIC_SPI 0 IRQ_TYPE_LEVEL_HIGH>, + <1 0 &gic GIC_SPI 1 IRQ_TYPE_LEVEL_HIGH>, + <2 0 &gic GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>, + <3 0 &gic GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>, + <4 0 &gic GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>, + <5 0 &gic GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>, + <6 0 &gic GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>, + <7 0 &gic GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>, + <8 0 &gic GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>, + <9 0 &gic GIC_SPI 444 IRQ_TYPE_LEVEL_HIGH>, + <10 0 &gic GIC_SPI 445 IRQ_TYPE_LEVEL_HIGH>, + <11 0 &gic GIC_SPI 446 IRQ_TYPE_LEVEL_HIGH>, + <12 0 &gic GIC_SPI 447 IRQ_TYPE_LEVEL_HIGH>, + <13 0 &gic GIC_SPI 448 IRQ_TYPE_LEVEL_HIGH>, + <14 0 &gic GIC_SPI 449 IRQ_TYPE_LEVEL_HIGH>, + <15 0 &gic GIC_SPI 450 IRQ_TYPE_LEVEL_HIGH>, + <16 0 &gic GIC_SPI 451 IRQ_TYPE_LEVEL_HIGH>, + <17 0 &gic GIC_SPI 452 IRQ_TYPE_LEVEL_HIGH>, + <18 0 &gic GIC_SPI 453 IRQ_TYPE_LEVEL_HIGH>, + <19 0 &gic GIC_SPI 454 IRQ_TYPE_LEVEL_HIGH>, + <20 0 &gic GIC_SPI 455 IRQ_TYPE_LEVEL_HIGH>, + <21 0 &gic GIC_SPI 456 IRQ_TYPE_LEVEL_HIGH>, + <22 0 &gic GIC_SPI 457 IRQ_TYPE_LEVEL_HIGH>, + <23 0 &gic GIC_SPI 458 IRQ_TYPE_LEVEL_HIGH>, + <24 0 &gic GIC_SPI 459 IRQ_TYPE_LEVEL_HIGH>, + <25 0 &gic GIC_SPI 460 IRQ_TYPE_LEVEL_HIGH>, + <26 0 &gic GIC_SPI 461 IRQ_TYPE_LEVEL_HIGH>, + <27 0 &gic GIC_SPI 462 IRQ_TYPE_LEVEL_HIGH>, + <28 0 &gic GIC_SPI 463 IRQ_TYPE_LEVEL_HIGH>, + <29 0 &gic GIC_SPI 464 IRQ_TYPE_LEVEL_HIGH>, + <30 0 &gic GIC_SPI 465 IRQ_TYPE_LEVEL_HIGH>, + <31 0 &gic GIC_SPI 466 IRQ_TYPE_LEVEL_HIGH>, + <32 0 &gic GIC_SPI 467 IRQ_TYPE_LEVEL_HIGH>, + <33 0 &gic GIC_SPI 468 IRQ_TYPE_LEVEL_HIGH>, + <34 0 &gic GIC_SPI 469 IRQ_TYPE_LEVEL_HIGH>, + <35 0 &gic GIC_SPI 470 IRQ_TYPE_LEVEL_HIGH>, + <36 0 &gic GIC_SPI 471 IRQ_TYPE_LEVEL_HIGH>, + <37 0 &gic GIC_SPI 472 IRQ_TYPE_LEVEL_HIGH>, + <38 0 &gic GIC_SPI 473 IRQ_TYPE_LEVEL_HIGH>, + <39 0 &gic GIC_SPI 474 IRQ_TYPE_LEVEL_HIGH>, + <40 0 &gic GIC_SPI 475 IRQ_TYPE_LEVEL_HIGH>; + interrupt-map-mask = <40 0>; + clocks = <&cpg CPG_MOD R9A07G044_IA55_CLK>, + <&cpg CPG_MOD R9A07G044_IA55_PCLK>; + clock-names = "clk", "pclk"; + power-domains = <&cpg>; + resets = <&cpg R9A07G044_IA55_RESETN>; + }; From patchwork Wed Nov 10 22:58:03 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lad Prabhakar X-Patchwork-Id: 1553656 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-gpio-owner@vger.kernel.org; receiver=) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by bilbo.ozlabs.org (Postfix) with ESMTP id 4HqKyd1DsRz9s1l for ; Thu, 11 Nov 2021 09:58:33 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234032AbhKJXBQ (ORCPT ); Wed, 10 Nov 2021 18:01:16 -0500 Received: from relmlor1.renesas.com ([210.160.252.171]:38670 "EHLO relmlie5.idc.renesas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S233848AbhKJXBO (ORCPT ); Wed, 10 Nov 2021 18:01:14 -0500 X-IronPort-AV: E=Sophos;i="5.87,225,1631545200"; d="scan'208";a="99834525" Received: from unknown (HELO relmlir5.idc.renesas.com) ([10.200.68.151]) by relmlie5.idc.renesas.com with ESMTP; 11 Nov 2021 07:58:24 +0900 Received: from localhost.localdomain (unknown [10.226.36.204]) by relmlir5.idc.renesas.com (Postfix) with ESMTP id BF8884006CC7; Thu, 11 Nov 2021 07:58:21 +0900 (JST) From: Lad Prabhakar To: Marc Zyngier , Thomas Gleixner , Rob Herring , Linus Walleij , Geert Uytterhoeven , Magnus Damm , Bartosz Golaszewski , Philipp Zabel Cc: devicetree@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, Prabhakar , Biju Das , Lad Prabhakar Subject: [RFC PATCH v3 2/7] irqchip: Add RZ/G2L IA55 Interrupt Controller driver Date: Wed, 10 Nov 2021 22:58:03 +0000 Message-Id: <20211110225808.16388-3-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20211110225808.16388-1-prabhakar.mahadev-lad.rj@bp.renesas.com> References: <20211110225808.16388-1-prabhakar.mahadev-lad.rj@bp.renesas.com> Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org Add a driver for the Renesas RZ/G2L Interrupt Controller. This supports external pins being used as interrupts. It supports one line for NMI, 8 external pins and 32 GPIO pins (out of 123) to be used as IRQ lines. Signed-off-by: Lad Prabhakar --- drivers/irqchip/Kconfig | 8 + drivers/irqchip/Makefile | 1 + drivers/irqchip/irq-renesas-rzg2l.c | 465 ++++++++++++++++++++++++++++ 3 files changed, 474 insertions(+) create mode 100644 drivers/irqchip/irq-renesas-rzg2l.c diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig index 4d5924e9f766..79b8c9274fd7 100644 --- a/drivers/irqchip/Kconfig +++ b/drivers/irqchip/Kconfig @@ -236,6 +236,14 @@ config RENESAS_RZA1_IRQC Enable support for the Renesas RZ/A1 Interrupt Controller, to use up to 8 external interrupts with configurable sense select. +config RENESAS_RZG2L_IRQC + bool "Renesas RZ/G2L IRQC support" if COMPILE_TEST + select GENERIC_IRQ_CHIP + select IRQ_DOMAIN_HIERARCHY + help + Enable support for the Renesas RZ/G2L Interrupt Controller for external + devices. + config SL28CPLD_INTC bool "Kontron sl28cpld IRQ controller" depends on MFD_SL28CPLD=y || COMPILE_TEST diff --git a/drivers/irqchip/Makefile b/drivers/irqchip/Makefile index f88cbf36a9d2..8017786fbdac 100644 --- a/drivers/irqchip/Makefile +++ b/drivers/irqchip/Makefile @@ -51,6 +51,7 @@ obj-$(CONFIG_RDA_INTC) += irq-rda-intc.o obj-$(CONFIG_RENESAS_INTC_IRQPIN) += irq-renesas-intc-irqpin.o obj-$(CONFIG_RENESAS_IRQC) += irq-renesas-irqc.o obj-$(CONFIG_RENESAS_RZA1_IRQC) += irq-renesas-rza1.o +obj-$(CONFIG_RENESAS_RZG2L_IRQC) += irq-renesas-rzg2l.o obj-$(CONFIG_VERSATILE_FPGA_IRQ) += irq-versatile-fpga.o obj-$(CONFIG_ARCH_NSPIRE) += irq-zevio.o obj-$(CONFIG_ARCH_VT8500) += irq-vt8500.o diff --git a/drivers/irqchip/irq-renesas-rzg2l.c b/drivers/irqchip/irq-renesas-rzg2l.c new file mode 100644 index 000000000000..4258b9752c3b --- /dev/null +++ b/drivers/irqchip/irq-renesas-rzg2l.c @@ -0,0 +1,465 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Renesas RZ/G2L IRQC Driver + * + * Copyright (C) 2021 Renesas Electronics Corporation. + * + * Author: Lad Prabhakar + */ + +#include +#include +#include +#include +#include +#include +#include + +#define IRQC_IRQ_START 1 +#define IRQC_IRQ_COUNT 8 +#define IRQC_TINT_START 9 +#define IRQC_TINT_COUNT 32 +#define IRQC_NUM_IRQ 41 + +#define ISCR 0x10 +#define IITSR 0x14 +#define TSCR 0x20 +#define TITSR0 0x24 +#define TITSR1 0x28 +#define TITSR0_MAX_INT 16 +#define TITSEL_WIDTH 0x2 +#define TSSR(n) (0x30 + ((n) * 4)) +#define TIEN BIT(7) +#define TSSEL_SHIFT(n) (8 * (n)) +#define TSSEL_MASK GENMASK(7, 0) +#define IRQ_MASK 0x3 + +#define TSSR_OFFSET(n) ((n) % 4) +#define TSSR_INDEX(n) ((n) / 4) + +#define TITSR_TITSEL_EDGE_RISING 0 +#define TITSR_TITSEL_EDGE_FALLING 1 +#define TITSR_TITSEL_LEVEL_HIGH 2 +#define TITSR_TITSEL_LEVEL_LOW 3 + +#define IITSR_IITSEL(n, sense) ((sense) << ((n) * 2)) +#define IITSR_IITSEL_LEVEL_LOW 0 +#define IITSR_IITSEL_EDGE_FALLING 1 +#define IITSR_IITSEL_EDGE_RISING 2 +#define IITSR_IITSEL_EDGE_BOTH 3 +#define IITSR_IITSEL_MASK(n) IITSR_IITSEL((n), 3) + +#define TINT_EXTRACT_HWIRQ(x) ((x) & ~GENMASK(31, 16)) +#define TINT_EXTRACT_GPIOINT(x) ((x) >> 16) + +struct rzg2l_irqc_priv { + void __iomem *base; + struct of_phandle_args map[IRQC_NUM_IRQ]; +}; + +struct rzg2l_irqc_chip_data { + int tint; +}; + +static struct rzg2l_irqc_priv *irq_data_to_priv(struct irq_data *data) +{ + return data->domain->host_data; +} + +static void rzg2l_irq_eoi(struct irq_data *d) +{ + struct rzg2l_irqc_priv *priv = irq_data_to_priv(d); + unsigned int hw_irq = irqd_to_hwirq(d) - IRQC_IRQ_START; + u16 bit = BIT(hw_irq); + u32 reg; + + reg = readl_relaxed(priv->base + ISCR); + if (reg & bit) + writel_relaxed(GENMASK(IRQC_IRQ_COUNT - 1, 0) & ~bit, + priv->base + ISCR); + + irq_chip_eoi_parent(d); +} + +static void rzg2l_tint_eoi(struct irq_data *d) +{ + struct rzg2l_irqc_priv *priv = irq_data_to_priv(d); + unsigned int hw_irq = irqd_to_hwirq(d); + u32 bit = BIT(hw_irq - IRQC_TINT_START); + u32 reg; + + reg = readl_relaxed(priv->base + TSCR); + if (reg & bit) + writel_relaxed(GENMASK(IRQC_TINT_COUNT - 1, 0) & ~bit, + priv->base + TSCR); + + irq_chip_eoi_parent(d); +} + +static void rzg2l_irqc_eoi(struct irq_data *d) +{ + unsigned int hw_irq = irqd_to_hwirq(d); + + if (hw_irq >= IRQC_IRQ_START && hw_irq <= IRQC_IRQ_COUNT) + return rzg2l_irq_eoi(d); + else if (hw_irq >= IRQC_TINT_START && hw_irq <= IRQC_TINT_COUNT) + return rzg2l_tint_eoi(d); +} + +static void rzg2l_irqc_irq_disable(struct irq_data *d) +{ + unsigned int hw_irq = irqd_to_hwirq(d); + + if (hw_irq >= IRQC_TINT_START && hw_irq <= IRQC_TINT_COUNT) { + struct rzg2l_irqc_priv *priv = irq_data_to_priv(d); + u32 offset = hw_irq - IRQC_TINT_START; + u32 tssr_offset = TSSR_OFFSET(offset); + u8 tssr_index = TSSR_INDEX(offset); + u32 reg; + + reg = readl_relaxed(priv->base + TSSR(tssr_index)); + reg &= ~(TSSEL_MASK << tssr_offset); + writel_relaxed(reg, priv->base + TSSR(tssr_index)); + } + irq_chip_disable_parent(d); +} + +static void rzg2l_irqc_irq_enable(struct irq_data *d) +{ + unsigned int hw_irq = irqd_to_hwirq(d); + + if (hw_irq >= IRQC_TINT_START && hw_irq <= IRQC_TINT_COUNT) { + struct rzg2l_irqc_priv *priv = irq_data_to_priv(d); + struct rzg2l_irqc_chip_data *chip_data = d->chip_data; + u32 offset = hw_irq - IRQC_TINT_START; + u32 tssr_offset = TSSR_OFFSET(offset); + u8 tssr_index = TSSR_INDEX(offset); + u32 reg; + + reg = readl_relaxed(priv->base + TSSR(tssr_index)); + reg |= (TIEN | chip_data->tint) << TSSEL_SHIFT(tssr_offset); + writel_relaxed(reg, priv->base + TSSR(tssr_index)); + } + irq_chip_enable_parent(d); +} + +static int rzg2l_irq_set_type(struct irq_data *d, unsigned int type) +{ + struct rzg2l_irqc_priv *priv = irq_data_to_priv(d); + unsigned int hw_irq = irqd_to_hwirq(d) - IRQC_IRQ_START; + u16 sense, tmp; + + switch (type & IRQ_TYPE_SENSE_MASK) { + case IRQ_TYPE_LEVEL_LOW: + sense = IITSR_IITSEL_LEVEL_LOW; + break; + + case IRQ_TYPE_EDGE_FALLING: + sense = IITSR_IITSEL_EDGE_FALLING; + break; + + case IRQ_TYPE_EDGE_RISING: + sense = IITSR_IITSEL_EDGE_RISING; + break; + + case IRQ_TYPE_EDGE_BOTH: + sense = IITSR_IITSEL_EDGE_BOTH; + break; + + default: + return -EINVAL; + } + + tmp = readl_relaxed(priv->base + IITSR); + tmp &= ~IITSR_IITSEL_MASK(hw_irq); + tmp |= IITSR_IITSEL(hw_irq, sense); + writel_relaxed(tmp, priv->base + IITSR); + + return 0; +} + +static int rzg2l_tint_set_edge(struct irq_data *d, unsigned int type) +{ + struct rzg2l_irqc_priv *priv = irq_data_to_priv(d); + unsigned int hwirq = irqd_to_hwirq(d); + u32 titseln = hwirq - IRQC_TINT_START; + u8 sense; + u32 reg; + + switch (type & IRQ_TYPE_SENSE_MASK) { + case IRQ_TYPE_EDGE_RISING: + sense = TITSR_TITSEL_EDGE_RISING; + break; + + case IRQ_TYPE_EDGE_FALLING: + sense = TITSR_TITSEL_EDGE_FALLING; + break; + + default: + return -EINVAL; + } + + if (titseln < TITSR0_MAX_INT) { + reg = readl_relaxed(priv->base + TITSR0); + reg &= ~(IRQ_MASK << (titseln * TITSEL_WIDTH)); + reg |= sense << (titseln * TITSEL_WIDTH); + writel_relaxed(reg, priv->base + TITSR0); + } else { + titseln = titseln / TITSEL_WIDTH; + reg = readl_relaxed(priv->base + TITSR1); + reg &= ~(IRQ_MASK << (titseln * TITSEL_WIDTH)); + reg |= sense << (titseln * TITSEL_WIDTH); + writel_relaxed(reg, priv->base + TITSR1); + } + + return 0; +} + +static int rzg2l_irqc_set_type(struct irq_data *d, unsigned int type) +{ + unsigned int hw_irq = irqd_to_hwirq(d); + + if (hw_irq >= IRQC_IRQ_START && hw_irq <= IRQC_IRQ_COUNT) + return rzg2l_irq_set_type(d, type); + else if (hw_irq >= IRQC_TINT_START && hw_irq <= IRQC_TINT_COUNT) + return rzg2l_tint_set_edge(d, type); + + return -EINVAL; +} + +static struct irq_chip irqc_chip = { + .name = "rzg2l-irqc", + .irq_eoi = rzg2l_irqc_eoi, + .irq_mask = irq_chip_mask_parent, + .irq_unmask = irq_chip_unmask_parent, + .irq_disable = rzg2l_irqc_irq_disable, + .irq_enable = rzg2l_irqc_irq_enable, + .irq_get_irqchip_state = irq_chip_get_parent_state, + .irq_set_irqchip_state = irq_chip_set_parent_state, + .irq_retrigger = irq_chip_retrigger_hierarchy, + .irq_set_type = rzg2l_irqc_set_type, + .flags = IRQCHIP_MASK_ON_SUSPEND | + IRQCHIP_SET_TYPE_MASKED | + IRQCHIP_SKIP_SET_WAKE, +}; + +static int rzg2l_irqc_alloc(struct irq_domain *domain, unsigned int virq, + unsigned int nr_irqs, void *arg) +{ + struct rzg2l_irqc_priv *priv = domain->host_data; + struct rzg2l_irqc_chip_data *chip_data = NULL; + struct irq_fwspec spec; + irq_hw_number_t hwirq; + int tint = -EINVAL; + unsigned int type; + unsigned int i; + int ret; + + ret = irq_domain_translate_twocell(domain, arg, &hwirq, &type); + if (ret) + return ret; + + /* + * For TINIT interrupts ie where pinctrl driver is child of irqc domain + * the hwirq and TINT are encoded in fwspec->param[0]. + * hwirq for TINIT range from 9-40, hwirq is embedded 0-15 bits and TINT + * from 16-31 bits. TINIT from the pinctrl drivers needs to be programmed + * in IRQC registers to enable a given gpio pin as interrupt. + */ + if (hwirq > IRQC_IRQ_COUNT) { + tint = TINT_EXTRACT_GPIOINT(hwirq); + hwirq = TINT_EXTRACT_HWIRQ(hwirq); + } + + if (hwirq > (IRQC_NUM_IRQ - 1)) + return -EINVAL; + + if (tint != -EINVAL && (hwirq < IRQC_TINT_START || hwirq > (IRQC_NUM_IRQ - 1))) + return -EINVAL; + + chip_data = kzalloc(sizeof(*chip_data), GFP_KERNEL); + if (!chip_data) + return -ENOMEM; + chip_data->tint = tint; + + ret = irq_domain_set_hwirq_and_chip(domain, virq, hwirq, &irqc_chip, + chip_data); + if (ret) { + kfree(chip_data); + return ret; + } + + spec.fwnode = domain->parent->fwnode; + spec.param_count = priv->map[hwirq].args_count; + for (i = 0; i < spec.param_count; i++) + spec.param[i] = priv->map[hwirq].args[i]; + + ret = irq_domain_alloc_irqs_parent(domain, virq, nr_irqs, &spec); + if (ret) + kfree(chip_data); + + return ret; +} + +static void rzg2l_irqc_domain_free(struct irq_domain *domain, unsigned int virq, + unsigned int nr_irqs) +{ + struct irq_data *d; + + d = irq_domain_get_irq_data(domain, virq); + if (d) { + struct rzg2l_irqc_chip_data *chip_data = d->chip_data; + + kfree(chip_data); + } + irq_domain_free_irqs_common(domain, virq, nr_irqs); +} + +static const struct irq_domain_ops rzg2l_irqc_domain_ops = { + .alloc = rzg2l_irqc_alloc, + .free = rzg2l_irqc_domain_free, + .translate = irq_domain_translate_twocell, +}; + +static int rzg2l_irqc_parse_map(struct rzg2l_irqc_priv *priv, + struct device_node *np, + struct device_node *parent) +{ + unsigned int imaplen, i, j, ret; + struct device_node *ipar; + const __be32 *imap; + u32 intsize; + + imap = of_get_property(np, "interrupt-map", &imaplen); + if (!imap) + return -EINVAL; + + for (i = 0; i < IRQC_NUM_IRQ; i++) { + if (imaplen < 3) + return -EINVAL; + + /* Check interrupt number, ignore sense */ + if (be32_to_cpup(imap) != i) + return -EINVAL; + + ipar = of_find_node_by_phandle(be32_to_cpup(imap + 2)); + if (ipar != parent) { + of_node_put(ipar); + return -EINVAL; + } + + imap += 3; + imaplen -= 3; + + ret = of_property_read_u32(ipar, "#interrupt-cells", &intsize); + of_node_put(ipar); + if (ret) + return ret; + + if (imaplen < intsize) + return -EINVAL; + + priv->map[i].args_count = intsize; + for (j = 0; j < intsize; j++) + priv->map[i].args[j] = be32_to_cpup(imap++); + + imaplen -= intsize; + } + + return 0; +} + +static int rzg2l_irqc_init(struct device_node *node, struct device_node *parent) +{ + struct irq_domain *irq_domain, *parent_domain; + struct reset_control *resetn; + struct rzg2l_irqc_priv *priv; + struct clk *clk; + struct clk *pclk; + int ret; + + priv = kzalloc(sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->base = of_iomap(node, 0); + if (!priv->base) { + ret = -ENXIO; + goto free_priv; + } + + clk = of_clk_get_by_name(node, "clk"); + if (IS_ERR(clk)) { + ret = IS_ERR(clk); + goto iounmap_base; + } + + pclk = of_clk_get_by_name(node, "pclk"); + if (IS_ERR(pclk)) { + ret = IS_ERR(pclk); + goto iounmap_base; + } + + resetn = of_reset_control_get_exclusive_by_index(node, 0); + if (IS_ERR(resetn)) { + ret = IS_ERR(resetn); + goto iounmap_base; + } + + parent_domain = irq_find_host(parent); + if (!parent_domain) { + pr_err("%pOF: cannot find parent domain\n", node); + ret = -ENODEV; + goto iounmap_base; + } + + ret = rzg2l_irqc_parse_map(priv, node, parent); + if (ret) { + pr_err("%pOF: cannot parse interrupt-map: %d\n", node, ret); + goto iounmap_base; + } + + ret = reset_control_deassert(resetn); + if (ret) { + pr_err("%pOF: failed to deassert resetn pin, %d\n", node, ret); + goto iounmap_base; + } + + ret = clk_prepare_enable(clk); + if (ret) + goto assert_reset; + + ret = clk_prepare_enable(pclk); + if (ret) + goto disable_clk; + + irq_domain = irq_domain_add_hierarchy(parent_domain, 0, IRQC_NUM_IRQ, + node, &rzg2l_irqc_domain_ops, + priv); + if (!irq_domain) { + pr_err("%pOF: cannot initialize irq domain\n", node); + ret = -ENOMEM; + goto fail_irq_domain; + } + + return 0; + +fail_irq_domain: + clk_disable_unprepare(pclk); +disable_clk: + clk_disable_unprepare(clk); +assert_reset: + reset_control_assert(resetn); +iounmap_base: + iounmap(priv->base); +free_priv: + kfree(priv); + return ret; +} + +IRQCHIP_PLATFORM_DRIVER_BEGIN(rzg2l_irqc) +IRQCHIP_MATCH("renesas,rzg2l-irqc", rzg2l_irqc_init) +IRQCHIP_PLATFORM_DRIVER_END(rzg2l_irqc) +MODULE_AUTHOR("Lad Prabhakar "); +MODULE_DESCRIPTION("Renesas RZ/G2L IRQC Driver"); +MODULE_LICENSE("GPL v2"); From patchwork Wed Nov 10 22:58:04 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lad Prabhakar X-Patchwork-Id: 1553657 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-gpio-owner@vger.kernel.org; receiver=) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by bilbo.ozlabs.org (Postfix) with ESMTP id 4HqKyd4W8nz9sVc for ; Thu, 11 Nov 2021 09:58:33 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234023AbhKJXBS (ORCPT ); Wed, 10 Nov 2021 18:01:18 -0500 Received: from relmlor1.renesas.com ([210.160.252.171]:38670 "EHLO relmlie5.idc.renesas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S234031AbhKJXBR (ORCPT ); Wed, 10 Nov 2021 18:01:17 -0500 X-IronPort-AV: E=Sophos;i="5.87,225,1631545200"; d="scan'208";a="99834529" Received: from unknown (HELO relmlir5.idc.renesas.com) ([10.200.68.151]) by relmlie5.idc.renesas.com with ESMTP; 11 Nov 2021 07:58:28 +0900 Received: from localhost.localdomain (unknown [10.226.36.204]) by relmlir5.idc.renesas.com (Postfix) with ESMTP id 27846400754F; Thu, 11 Nov 2021 07:58:24 +0900 (JST) From: Lad Prabhakar To: Marc Zyngier , Thomas Gleixner , Rob Herring , Linus Walleij , Geert Uytterhoeven , Magnus Damm , Bartosz Golaszewski , Philipp Zabel Cc: devicetree@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, Prabhakar , Biju Das , Lad Prabhakar Subject: [RFC PATCH v3 3/7] soc: renesas: Enable IRQC driver for RZ/G2L Date: Wed, 10 Nov 2021 22:58:04 +0000 Message-Id: <20211110225808.16388-4-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20211110225808.16388-1-prabhakar.mahadev-lad.rj@bp.renesas.com> References: <20211110225808.16388-1-prabhakar.mahadev-lad.rj@bp.renesas.com> Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org Select RENESAS_RZG2L_IRQC if ARCH_R9A07G044 is enabled. Signed-off-by: Lad Prabhakar --- drivers/soc/renesas/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/soc/renesas/Kconfig b/drivers/soc/renesas/Kconfig index ce16ef5c939c..fec93883c3b8 100644 --- a/drivers/soc/renesas/Kconfig +++ b/drivers/soc/renesas/Kconfig @@ -286,6 +286,7 @@ config ARCH_R8A774B1 config ARCH_R9A07G044 bool "ARM64 Platform support for RZ/G2L" + select RENESAS_RZG2L_IRQC help This enables support for the Renesas RZ/G2L SoC variants. From patchwork Wed Nov 10 22:58:05 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lad Prabhakar X-Patchwork-Id: 1553658 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-gpio-owner@vger.kernel.org; receiver=) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by bilbo.ozlabs.org (Postfix) with ESMTP id 4HqKyg4T8tz9s1l for ; Thu, 11 Nov 2021 09:58:35 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234073AbhKJXBW (ORCPT ); Wed, 10 Nov 2021 18:01:22 -0500 Received: from relmlor1.renesas.com ([210.160.252.171]:51486 "EHLO relmlie5.idc.renesas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S234018AbhKJXBU (ORCPT ); Wed, 10 Nov 2021 18:01:20 -0500 X-IronPort-AV: E=Sophos;i="5.87,225,1631545200"; d="scan'208";a="99834537" Received: from unknown (HELO relmlir5.idc.renesas.com) ([10.200.68.151]) by relmlie5.idc.renesas.com with ESMTP; 11 Nov 2021 07:58:31 +0900 Received: from localhost.localdomain (unknown [10.226.36.204]) by relmlir5.idc.renesas.com (Postfix) with ESMTP id 7F8F4400492A; Thu, 11 Nov 2021 07:58:28 +0900 (JST) From: Lad Prabhakar To: Marc Zyngier , Thomas Gleixner , Rob Herring , Linus Walleij , Geert Uytterhoeven , Magnus Damm , Bartosz Golaszewski , Philipp Zabel Cc: devicetree@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, Prabhakar , Biju Das , Lad Prabhakar Subject: [RFC PATCH v3 4/7] gpio: gpiolib: Allow free() callback to be overridden Date: Wed, 10 Nov 2021 22:58:05 +0000 Message-Id: <20211110225808.16388-5-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20211110225808.16388-1-prabhakar.mahadev-lad.rj@bp.renesas.com> References: <20211110225808.16388-1-prabhakar.mahadev-lad.rj@bp.renesas.com> Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org Allow free() callback to be overridden from irq_domain_ops for hierarchical chips. This allows drivers freeing up resources which are allocated during callbacks for example populate_parent_alloc_arg. Signed-off-by: Lad Prabhakar --- drivers/gpio/gpiolib.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index d1b9b721218f..30aabef37468 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -1151,15 +1151,18 @@ static void gpiochip_hierarchy_setup_domain_ops(struct irq_domain_ops *ops) ops->activate = gpiochip_irq_domain_activate; ops->deactivate = gpiochip_irq_domain_deactivate; ops->alloc = gpiochip_hierarchy_irq_domain_alloc; - ops->free = irq_domain_free_irqs_common; /* - * We only allow overriding the translate() function for + * We only allow overriding the translate() and free() function for * hierarchical chips, and this should only be done if the user - * really need something other than 1:1 translation. + * really need something other than 1:1 translation for translate() + * callback and free if user wants to free up any resources which + * were allocated during callbacks for example populate_parent_alloc_arg. */ if (!ops->translate) ops->translate = gpiochip_hierarchy_irq_domain_translate; + if (!ops->free) + ops->free = irq_domain_free_irqs_common; } static int gpiochip_hierarchy_add_domain(struct gpio_chip *gc) From patchwork Wed Nov 10 22:58:06 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lad Prabhakar X-Patchwork-Id: 1553659 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-gpio-owner@vger.kernel.org; receiver=) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by bilbo.ozlabs.org (Postfix) with ESMTP id 4HqKyp7175z9s1l for ; Thu, 11 Nov 2021 09:58:42 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234074AbhKJXB2 (ORCPT ); Wed, 10 Nov 2021 18:01:28 -0500 Received: from relmlor1.renesas.com ([210.160.252.171]:51486 "EHLO relmlie5.idc.renesas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S234064AbhKJXBX (ORCPT ); Wed, 10 Nov 2021 18:01:23 -0500 X-IronPort-AV: E=Sophos;i="5.87,225,1631545200"; d="scan'208";a="99834541" Received: from unknown (HELO relmlir5.idc.renesas.com) ([10.200.68.151]) by relmlie5.idc.renesas.com with ESMTP; 11 Nov 2021 07:58:34 +0900 Received: from localhost.localdomain (unknown [10.226.36.204]) by relmlir5.idc.renesas.com (Postfix) with ESMTP id E400F400492A; Thu, 11 Nov 2021 07:58:31 +0900 (JST) From: Lad Prabhakar To: Marc Zyngier , Thomas Gleixner , Rob Herring , Linus Walleij , Geert Uytterhoeven , Magnus Damm , Bartosz Golaszewski , Philipp Zabel Cc: devicetree@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, Prabhakar , Biju Das , Lad Prabhakar Subject: [RFC PATCH v3 5/7] gpio: gpiolib: Add ngirq member to struct gpio_irq_chip Date: Wed, 10 Nov 2021 22:58:06 +0000 Message-Id: <20211110225808.16388-6-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20211110225808.16388-1-prabhakar.mahadev-lad.rj@bp.renesas.com> References: <20211110225808.16388-1-prabhakar.mahadev-lad.rj@bp.renesas.com> Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org Number of GPIO IRQ's supported by the chip is not always equal to the number of GPIO pins. For example on Renesas RZ/G2L SoC where it has GPIO0-122 pins but at a give point a maximum of only 32 GPIO pins can be used as IRQ lines in the IRQC domain. This patch adds ngirq member to struct gpio_irq_chip and passes this as a size to irq_domain_create_hierarchy()/irq_domain_create_simple() if it is being set in the driver otherwise fallbacks to using ngpio. Signed-off-by: Lad Prabhakar --- drivers/gpio/gpiolib.c | 4 ++-- include/linux/gpio/driver.h | 8 ++++++++ 2 files changed, 10 insertions(+), 2 deletions(-) diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 30aabef37468..36a8eefe91b9 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -1185,7 +1185,7 @@ static int gpiochip_hierarchy_add_domain(struct gpio_chip *gc) gc->irq.domain = irq_domain_create_hierarchy( gc->irq.parent_domain, 0, - gc->ngpio, + gc->irq.ngirq ? gc->irq.ngirq : gc->ngpio, gc->irq.fwnode, &gc->irq.child_irq_domain_ops, gc); @@ -1528,7 +1528,7 @@ static int gpiochip_add_irqchip(struct gpio_chip *gc, } else { /* Some drivers provide custom irqdomain ops */ gc->irq.domain = irq_domain_create_simple(fwnode, - gc->ngpio, + gc->irq.ngirq ? gc->irq.ngirq : gc->ngpio, gc->irq.first, gc->irq.domain_ops ?: &gpiochip_domain_ops, gc); diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h index a0f9901dcae6..129945bfe3e7 100644 --- a/include/linux/gpio/driver.h +++ b/include/linux/gpio/driver.h @@ -51,6 +51,14 @@ struct gpio_irq_chip { */ const struct irq_domain_ops *domain_ops; + /** + * @ngirq: + * + * The number of GPIO IRQ's handled by this IRQ domain; usually is + * equal to ngpio + */ + u16 ngirq; + #ifdef CONFIG_IRQ_DOMAIN_HIERARCHY /** * @fwnode: From patchwork Wed Nov 10 22:58:07 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lad Prabhakar X-Patchwork-Id: 1553660 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-gpio-owner@vger.kernel.org; receiver=) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by bilbo.ozlabs.org (Postfix) with ESMTP id 4HqKyr1Hzkz9s1l for ; Thu, 11 Nov 2021 09:58:44 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234133AbhKJXBa (ORCPT ); Wed, 10 Nov 2021 18:01:30 -0500 Received: from relmlor1.renesas.com ([210.160.252.171]:13475 "EHLO relmlie5.idc.renesas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S234116AbhKJXB1 (ORCPT ); Wed, 10 Nov 2021 18:01:27 -0500 X-IronPort-AV: E=Sophos;i="5.87,225,1631545200"; d="scan'208";a="99834544" Received: from unknown (HELO relmlir5.idc.renesas.com) ([10.200.68.151]) by relmlie5.idc.renesas.com with ESMTP; 11 Nov 2021 07:58:38 +0900 Received: from localhost.localdomain (unknown [10.226.36.204]) by relmlir5.idc.renesas.com (Postfix) with ESMTP id 4E3A2400754F; Thu, 11 Nov 2021 07:58:35 +0900 (JST) From: Lad Prabhakar To: Marc Zyngier , Thomas Gleixner , Rob Herring , Linus Walleij , Geert Uytterhoeven , Magnus Damm , Bartosz Golaszewski , Philipp Zabel Cc: devicetree@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, Prabhakar , Biju Das , Lad Prabhakar Subject: [RFC PATCH v3 6/7] pinctrl: renesas: pinctrl-rzg2l: Add IRQ domain to handle GPIO interrupt Date: Wed, 10 Nov 2021 22:58:07 +0000 Message-Id: <20211110225808.16388-7-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20211110225808.16388-1-prabhakar.mahadev-lad.rj@bp.renesas.com> References: <20211110225808.16388-1-prabhakar.mahadev-lad.rj@bp.renesas.com> Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org Add IRQ domian to RZ/G2L pinctrl driver to handle GPIO interrupt. GPIO0-GPIO122 pins can be used as IRQ lines but only 32 pins can be used as IRQ lines at given time. Selection of pins as IRQ lines is handled by IA55 (which is the IRQC block) which sits in between the GPIO and GIC. Signed-off-by: Lad Prabhakar --- drivers/pinctrl/renesas/pinctrl-rzg2l.c | 197 ++++++++++++++++++++++++ 1 file changed, 197 insertions(+) diff --git a/drivers/pinctrl/renesas/pinctrl-rzg2l.c b/drivers/pinctrl/renesas/pinctrl-rzg2l.c index a589efa46e7d..d69a928ad81e 100644 --- a/drivers/pinctrl/renesas/pinctrl-rzg2l.c +++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c @@ -9,8 +9,10 @@ #include #include #include +#include #include #include +#include #include #include #include @@ -89,6 +91,7 @@ #define PIN(n) (0x0800 + 0x10 + (n)) #define IOLH(n) (0x1000 + (n) * 8) #define IEN(n) (0x1800 + (n) * 8) +#define ISEL(n) (0x2C80 + (n) * 8) #define PWPR (0x3014) #define SD_CH(n) (0x3000 + (n) * 4) #define QSPI (0x3008) @@ -112,6 +115,10 @@ #define RZG2L_PIN_ID_TO_PORT_OFFSET(id) (RZG2L_PIN_ID_TO_PORT(id) + 0x10) #define RZG2L_PIN_ID_TO_PIN(id) ((id) % RZG2L_PINS_PER_PORT) +#define RZG2L_TINT_MAX_INTERRUPT 32 +#define RZG2L_TINT_IRQ_START_INDEX 9 +#define RZG2L_PACK_HWIRQ(t, i) (((t) << 16) | (i)) + struct rzg2l_dedicated_configs { const char *name; u32 config; @@ -137,6 +144,8 @@ struct rzg2l_pinctrl { struct gpio_chip gpio_chip; struct pinctrl_gpio_range gpio_range; + DECLARE_BITMAP(tint_slot, RZG2L_TINT_MAX_INTERRUPT); + unsigned int hwirq[RZG2L_TINT_MAX_INTERRUPT]; spinlock_t lock; }; @@ -880,6 +889,8 @@ static int rzg2l_gpio_get(struct gpio_chip *chip, unsigned int offset) static void rzg2l_gpio_free(struct gpio_chip *chip, unsigned int offset) { + unsigned int virq; + pinctrl_gpio_free(chip->base + offset); /* @@ -887,6 +898,10 @@ static void rzg2l_gpio_free(struct gpio_chip *chip, unsigned int offset) * drive the GPIO pin as an output. */ rzg2l_gpio_direction_input(chip, offset); + + virq = irq_find_mapping(chip->irq.domain, offset); + if (virq) + irq_dispose_mapping(virq); } static const char * const rzg2l_gpio_names[] = { @@ -1072,14 +1087,187 @@ static struct rzg2l_dedicated_configs rzg2l_dedicated_pins[] = { { "RIIC1_SCL", RZG2L_SINGLE_PIN_PACK(0xe, 3, PIN_CFG_IEN) }, }; +static int rzg2l_gpio_get_gpioint(unsigned int virq) +{ + unsigned int gpioint = 0; + unsigned int i = 0; + u32 port, bit; + + port = virq / 8; + bit = virq % 8; + + if (port >= ARRAY_SIZE(rzg2l_gpio_configs)) + return -EINVAL; + + for (i = 0; i < port; i++) + gpioint += RZG2L_GPIO_PORT_GET_PINCNT(rzg2l_gpio_configs[i]); + + if (bit >= RZG2L_GPIO_PORT_GET_PINCNT(rzg2l_gpio_configs[i])) + return -EINVAL; + + gpioint += bit; + + return gpioint; +} + +static void rzg2l_gpio_irq_domain_free(struct irq_domain *domain, unsigned int virq, + unsigned int nr_irqs) +{ + struct irq_data *d; + + d = irq_domain_get_irq_data(domain, virq); + if (d) { + struct gpio_chip *gc = irq_data_get_irq_chip_data(d); + struct rzg2l_pinctrl *pctrl = container_of(gc, struct rzg2l_pinctrl, gpio_chip); + irq_hw_number_t hwirq = irqd_to_hwirq(d); + unsigned int i; + + for (i = 0; i < RZG2L_TINT_MAX_INTERRUPT; i++) { + if (pctrl->hwirq[i] == hwirq) { + bitmap_release_region(pctrl->tint_slot, i, get_order(1)); + pctrl->hwirq[i] = 0; + break; + } + } + } + irq_domain_free_irqs_common(domain, virq, nr_irqs); +} + +static void rzg2l_gpio_irq_disable(struct irq_data *d) +{ + struct gpio_chip *gc = irq_data_get_irq_chip_data(d); + struct rzg2l_pinctrl *pctrl = container_of(gc, struct rzg2l_pinctrl, gpio_chip); + unsigned int hwirq = irqd_to_hwirq(d); + unsigned long flags; + void __iomem *addr; + u32 port; + u8 bit; + + port = RZG2L_PIN_ID_TO_PORT(hwirq); + bit = RZG2L_PIN_ID_TO_PIN(hwirq); + + addr = pctrl->base + ISEL(port); + if (bit >= 4) { + bit -= 4; + addr += 4; + } + + spin_lock_irqsave(&pctrl->lock, flags); + writel(readl(addr) & ~BIT(bit * 8), addr); + spin_unlock_irqrestore(&pctrl->lock, flags); + + irq_chip_disable_parent(d); +} + +static void rzg2l_gpio_irq_enable(struct irq_data *d) +{ + struct gpio_chip *gc = irq_data_get_irq_chip_data(d); + struct rzg2l_pinctrl *pctrl = container_of(gc, struct rzg2l_pinctrl, gpio_chip); + unsigned int hwirq = irqd_to_hwirq(d); + unsigned long flags; + void __iomem *addr; + u32 port; + u8 bit; + + port = RZG2L_PIN_ID_TO_PORT(hwirq); + bit = RZG2L_PIN_ID_TO_PIN(hwirq); + + addr = pctrl->base + ISEL(port); + if (bit >= 4) { + bit -= 4; + addr += 4; + } + + spin_lock_irqsave(&pctrl->lock, flags); + writel(readl(addr) | BIT(bit * 8), addr); + spin_unlock_irqrestore(&pctrl->lock, flags); + + irq_chip_enable_parent(d); +} + +static int rzg2l_gpio_irq_set_type(struct irq_data *d, unsigned int type) +{ + return irq_chip_set_type_parent(d, type); +} + +static void rzg2l_gpio_irqc_eoi(struct irq_data *d) +{ + irq_chip_eoi_parent(d); +} + +static struct irq_chip rzg2l_gpio_irqchip = { + .name = "rzg2l-gpio", + .irq_disable = rzg2l_gpio_irq_disable, + .irq_enable = rzg2l_gpio_irq_enable, + .irq_mask = irq_chip_mask_parent, + .irq_unmask = irq_chip_unmask_parent, + .irq_set_type = rzg2l_gpio_irq_set_type, + .irq_eoi = rzg2l_gpio_irqc_eoi, +}; + +static int rzg2l_gpio_child_to_parent_hwirq(struct gpio_chip *gc, + unsigned int child, + unsigned int child_type, + unsigned int *parent, + unsigned int *parent_type) +{ + struct rzg2l_pinctrl *pctrl = gpiochip_get_data(gc); + int gpioint, irq; + + gpioint = rzg2l_gpio_get_gpioint(child); + if (gpioint < 0) + return gpioint; + + irq = bitmap_find_free_region(pctrl->tint_slot, RZG2L_TINT_MAX_INTERRUPT, get_order(1)); + if (irq < 0) + return -ENOSPC; + pctrl->hwirq[irq] = child; + irq += RZG2L_TINT_IRQ_START_INDEX; + + /* All these interrupts are level high in the CPU */ + *parent_type = IRQ_TYPE_LEVEL_HIGH; + *parent = RZG2L_PACK_HWIRQ(gpioint, irq); + return 0; +} + +static void *rzg2l_gpio_populate_parent_fwspec(struct gpio_chip *chip, + unsigned int parent_hwirq, + unsigned int parent_type) +{ + struct irq_fwspec *fwspec; + + fwspec = kzalloc(sizeof(*fwspec), GFP_KERNEL); + if (!fwspec) + return NULL; + + fwspec->fwnode = chip->irq.parent_domain->fwnode; + fwspec->param_count = 2; + fwspec->param[0] = parent_hwirq; + fwspec->param[1] = parent_type; + + return fwspec; +} + static int rzg2l_gpio_register(struct rzg2l_pinctrl *pctrl) { struct device_node *np = pctrl->dev->of_node; struct gpio_chip *chip = &pctrl->gpio_chip; const char *name = dev_name(pctrl->dev); + struct irq_domain *parent_domain; struct of_phandle_args of_args; + struct device_node *parent_np; + struct gpio_irq_chip *girq; int ret; + parent_np = of_irq_find_parent(np); + if (!parent_np) + return -ENXIO; + + parent_domain = irq_find_host(parent_np); + of_node_put(parent_np); + if (!parent_domain) + return -EPROBE_DEFER; + ret = of_parse_phandle_with_fixed_args(np, "gpio-ranges", 3, 0, &of_args); if (ret) { dev_err(pctrl->dev, "Unable to parse gpio-ranges\n"); @@ -1106,6 +1294,15 @@ static int rzg2l_gpio_register(struct rzg2l_pinctrl *pctrl) chip->base = -1; chip->ngpio = of_args.args[2]; + girq = &chip->irq; + girq->chip = &rzg2l_gpio_irqchip; + girq->fwnode = of_node_to_fwnode(np); + girq->parent_domain = parent_domain; + girq->child_to_parent_hwirq = rzg2l_gpio_child_to_parent_hwirq; + girq->populate_parent_alloc_arg = rzg2l_gpio_populate_parent_fwspec; + girq->child_irq_domain_ops.free = rzg2l_gpio_irq_domain_free; + girq->ngirq = RZG2L_TINT_MAX_INTERRUPT; + pctrl->gpio_range.id = 0; pctrl->gpio_range.pin_base = 0; pctrl->gpio_range.base = 0; From patchwork Wed Nov 10 22:58:08 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lad Prabhakar X-Patchwork-Id: 1553661 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-gpio-owner@vger.kernel.org; receiver=) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by bilbo.ozlabs.org (Postfix) with ESMTP id 4HqKyx3ZhCz9s1l for ; Thu, 11 Nov 2021 09:58:49 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234128AbhKJXBf (ORCPT ); Wed, 10 Nov 2021 18:01:35 -0500 Received: from relmlor2.renesas.com ([210.160.252.172]:20993 "EHLO relmlie6.idc.renesas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S234159AbhKJXBa (ORCPT ); Wed, 10 Nov 2021 18:01:30 -0500 X-IronPort-AV: E=Sophos;i="5.87,225,1631545200"; d="scan'208";a="100143755" Received: from unknown (HELO relmlir5.idc.renesas.com) ([10.200.68.151]) by relmlie6.idc.renesas.com with ESMTP; 11 Nov 2021 07:58:41 +0900 Received: from localhost.localdomain (unknown [10.226.36.204]) by relmlir5.idc.renesas.com (Postfix) with ESMTP id B709F400754F; Thu, 11 Nov 2021 07:58:38 +0900 (JST) From: Lad Prabhakar To: Marc Zyngier , Thomas Gleixner , Rob Herring , Linus Walleij , Geert Uytterhoeven , Magnus Damm , Bartosz Golaszewski , Philipp Zabel Cc: devicetree@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, Prabhakar , Biju Das , Lad Prabhakar Subject: [RFC PATCH v3 7/7] arm64: dts: renesas: r9a07g044: Add IRQC node to SoC DTSI Date: Wed, 10 Nov 2021 22:58:08 +0000 Message-Id: <20211110225808.16388-8-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20211110225808.16388-1-prabhakar.mahadev-lad.rj@bp.renesas.com> References: <20211110225808.16388-1-prabhakar.mahadev-lad.rj@bp.renesas.com> Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org Add IRQC node to R9A07G044 (RZ/G2L) SoC DTSI. Signed-off-by: Lad Prabhakar --- arch/arm64/boot/dts/renesas/r9a07g044.dtsi | 60 ++++++++++++++++++++++ 1 file changed, 60 insertions(+) diff --git a/arch/arm64/boot/dts/renesas/r9a07g044.dtsi b/arch/arm64/boot/dts/renesas/r9a07g044.dtsi index 358db254c4ea..c42ff2ed3144 100644 --- a/arch/arm64/boot/dts/renesas/r9a07g044.dtsi +++ b/arch/arm64/boot/dts/renesas/r9a07g044.dtsi @@ -504,6 +504,10 @@ reg = <0 0x11030000 0 0x10000>; gpio-controller; #gpio-cells = <2>; + #address-cells = <2>; + #interrupt-cells = <2>; + interrupt-parent = <&irqc>; + interrupt-controller; gpio-ranges = <&pinctrl 0 0 392>; clocks = <&cpg CPG_MOD R9A07G044_GPIO_HCLK>; power-domains = <&cpg>; @@ -512,6 +516,62 @@ <&cpg R9A07G044_GPIO_SPARE_RESETN>; }; + irqc: interrupt-controller@110a0000 { + compatible = "renesas,r9a07g044-irqc", + "renesas,rzg2l-irqc"; + #interrupt-cells = <2>; + #address-cells = <0>; + interrupt-controller; + reg = <0 0x110a0000 0 0x10000>; + interrupt-map = <0 0 &gic GIC_SPI 0 IRQ_TYPE_LEVEL_HIGH>, + <1 0 &gic GIC_SPI 1 IRQ_TYPE_LEVEL_HIGH>, + <2 0 &gic GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>, + <3 0 &gic GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>, + <4 0 &gic GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>, + <5 0 &gic GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>, + <6 0 &gic GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>, + <7 0 &gic GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>, + <8 0 &gic GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>, + <9 0 &gic GIC_SPI 444 IRQ_TYPE_LEVEL_HIGH>, + <10 0 &gic GIC_SPI 445 IRQ_TYPE_LEVEL_HIGH>, + <11 0 &gic GIC_SPI 446 IRQ_TYPE_LEVEL_HIGH>, + <12 0 &gic GIC_SPI 447 IRQ_TYPE_LEVEL_HIGH>, + <13 0 &gic GIC_SPI 448 IRQ_TYPE_LEVEL_HIGH>, + <14 0 &gic GIC_SPI 449 IRQ_TYPE_LEVEL_HIGH>, + <15 0 &gic GIC_SPI 450 IRQ_TYPE_LEVEL_HIGH>, + <16 0 &gic GIC_SPI 451 IRQ_TYPE_LEVEL_HIGH>, + <17 0 &gic GIC_SPI 452 IRQ_TYPE_LEVEL_HIGH>, + <18 0 &gic GIC_SPI 453 IRQ_TYPE_LEVEL_HIGH>, + <19 0 &gic GIC_SPI 454 IRQ_TYPE_LEVEL_HIGH>, + <20 0 &gic GIC_SPI 455 IRQ_TYPE_LEVEL_HIGH>, + <21 0 &gic GIC_SPI 456 IRQ_TYPE_LEVEL_HIGH>, + <22 0 &gic GIC_SPI 457 IRQ_TYPE_LEVEL_HIGH>, + <23 0 &gic GIC_SPI 458 IRQ_TYPE_LEVEL_HIGH>, + <24 0 &gic GIC_SPI 459 IRQ_TYPE_LEVEL_HIGH>, + <25 0 &gic GIC_SPI 460 IRQ_TYPE_LEVEL_HIGH>, + <26 0 &gic GIC_SPI 461 IRQ_TYPE_LEVEL_HIGH>, + <27 0 &gic GIC_SPI 462 IRQ_TYPE_LEVEL_HIGH>, + <28 0 &gic GIC_SPI 463 IRQ_TYPE_LEVEL_HIGH>, + <29 0 &gic GIC_SPI 464 IRQ_TYPE_LEVEL_HIGH>, + <30 0 &gic GIC_SPI 465 IRQ_TYPE_LEVEL_HIGH>, + <31 0 &gic GIC_SPI 466 IRQ_TYPE_LEVEL_HIGH>, + <32 0 &gic GIC_SPI 467 IRQ_TYPE_LEVEL_HIGH>, + <33 0 &gic GIC_SPI 468 IRQ_TYPE_LEVEL_HIGH>, + <34 0 &gic GIC_SPI 469 IRQ_TYPE_LEVEL_HIGH>, + <35 0 &gic GIC_SPI 470 IRQ_TYPE_LEVEL_HIGH>, + <36 0 &gic GIC_SPI 471 IRQ_TYPE_LEVEL_HIGH>, + <37 0 &gic GIC_SPI 472 IRQ_TYPE_LEVEL_HIGH>, + <38 0 &gic GIC_SPI 473 IRQ_TYPE_LEVEL_HIGH>, + <39 0 &gic GIC_SPI 474 IRQ_TYPE_LEVEL_HIGH>, + <40 0 &gic GIC_SPI 475 IRQ_TYPE_LEVEL_HIGH>; + interrupt-map-mask = <40 0>; + clocks = <&cpg CPG_MOD R9A07G044_IA55_CLK>, + <&cpg CPG_MOD R9A07G044_IA55_PCLK>; + clock-names = "clk", "pclk"; + power-domains = <&cpg>; + resets = <&cpg R9A07G044_IA55_RESETN>; + }; + dmac: dma-controller@11820000 { compatible = "renesas,r9a07g044-dmac", "renesas,rz-dmac";