From patchwork Thu Dec 21 08:36:19 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alex Soo X-Patchwork-Id: 757644 Received: from fd01.gateway.ufhost.com (fd01.gateway.ufhost.com [61.152.239.71]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7267F199B7; Thu, 21 Dec 2023 08:36:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=starfivetech.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=starfivetech.com Received: from EXMBX165.cuchost.com (unknown [175.102.18.54]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "EXMBX165", Issuer "EXMBX165" (not verified)) by fd01.gateway.ufhost.com (Postfix) with ESMTP id 625798068; Thu, 21 Dec 2023 16:36:51 +0800 (CST) Received: from EXMBX066.cuchost.com (172.16.7.66) by EXMBX165.cuchost.com (172.16.6.75) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Thu, 21 Dec 2023 16:36:51 +0800 Received: from localhost.localdomain (202.188.176.82) by EXMBX066.cuchost.com (172.16.6.66) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Thu, 21 Dec 2023 16:36:44 +0800 From: Alex Soo To: Linus Walleij , Bartosz Golaszewski , Hal Feng , "Ley Foon Tan" , Jianlong Huang , Emil Renner Berthing , Rob Herring , Krzysztof Kozlowski , Conor Dooley , "Drew Fustini" CC: , , , , "Paul Walmsley" , Palmer Dabbelt , Albert Ou , Alex Soo Subject: [RFC PATCH 3/6] pinctrl: starfive: jh8100: add pinctrl driver for sys_west domain Date: Thu, 21 Dec 2023 16:36:19 +0800 Message-ID: <20231221083622.3445726-4-yuklin.soo@starfivetech.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20231221083622.3445726-1-yuklin.soo@starfivetech.com> References: <20231221083622.3445726-1-yuklin.soo@starfivetech.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: EXCAS064.cuchost.com (172.16.6.24) To EXMBX066.cuchost.com (172.16.6.66) X-YovoleRuleAgent: yovoleflag Add pinctrl driver for sys_west domain. Signed-off-by: Alex Soo Reviewed-by: Ley Foon Tan --- drivers/pinctrl/starfive/Kconfig | 12 + drivers/pinctrl/starfive/Makefile | 1 + .../pinctrl-starfive-jh8100-sys-west.c | 264 ++++++++++++++++++ .../starfive/pinctrl-starfive-jh8100.h | 2 + 4 files changed, 279 insertions(+) create mode 100644 drivers/pinctrl/starfive/pinctrl-starfive-jh8100-sys-west.c diff --git a/drivers/pinctrl/starfive/Kconfig b/drivers/pinctrl/starfive/Kconfig index afcbf9d4dc8d..d78f161a636c 100644 --- a/drivers/pinctrl/starfive/Kconfig +++ b/drivers/pinctrl/starfive/Kconfig @@ -70,3 +70,15 @@ config PINCTRL_STARFIVE_JH8100_SYS_EAST This also provides an interface to the GPIO pins not used by other peripherals supporting inputs, outputs, configuring pull-up/pull-down and interrupts on input changes. + +config PINCTRL_STARFIVE_JH8100_SYS_WEST + tristate "StarFive JH8100 SoC System IOMUX-West pinctrl and GPIO driver" + depends on ARCH_STARFIVE || COMPILE_TEST + depends on OF + select PINCTRL_STARFIVE_JH8100 + default ARCH_STARFIVE + help + Say yes here to support system iomux-west pin control on the StarFive JH8100 SoC. + This also provides an interface to the GPIO pins not used by other + peripherals supporting inputs, outputs, configuring pull-up/pull-down + and interrupts on input changes. diff --git a/drivers/pinctrl/starfive/Makefile b/drivers/pinctrl/starfive/Makefile index 45698c502b48..784465157ae2 100644 --- a/drivers/pinctrl/starfive/Makefile +++ b/drivers/pinctrl/starfive/Makefile @@ -8,3 +8,4 @@ obj-$(CONFIG_PINCTRL_STARFIVE_JH7110_AON) += pinctrl-starfive-jh7110-aon.o obj-$(CONFIG_PINCTRL_STARFIVE_JH8100) += pinctrl-starfive-jh8100.o obj-$(CONFIG_PINCTRL_STARFIVE_JH8100_SYS_EAST) += pinctrl-starfive-jh8100-sys-east.o +obj-$(CONFIG_PINCTRL_STARFIVE_JH8100_SYS_WEST) += pinctrl-starfive-jh8100-sys-west.o diff --git a/drivers/pinctrl/starfive/pinctrl-starfive-jh8100-sys-west.c b/drivers/pinctrl/starfive/pinctrl-starfive-jh8100-sys-west.c new file mode 100644 index 000000000000..398821fc1f78 --- /dev/null +++ b/drivers/pinctrl/starfive/pinctrl-starfive-jh8100-sys-west.c @@ -0,0 +1,264 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Pinctrl / GPIO driver for StarFive JH8100 SoC sys west controller + * + * Copyright (C) 2023 StarFive Technology Co., Ltd. + * Author: Alex Soo + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include + +#include "../core.h" +#include "../pinctrl-utils.h" +#include "../pinmux.h" +#include "../pinconf.h" +#include "pinctrl-starfive-jh8100.h" + +#define JH8100_SYS_W_NGPIO 16 +#define JH8100_SYS_W_GC_BASE 0 + +/* registers */ +#define JH8100_SYS_W_DOEN 0x000 +#define JH8100_SYS_W_DOUT 0x010 +#define JH8100_SYS_W_GPI 0x020 +#define JH8100_SYS_W_GPIOIN 0x068 + +#define JH8100_SYS_W_GPIOEN 0x048 +#define JH8100_SYS_W_GPIOIS0 0x04c +#define JH8100_SYS_W_GPIOIC0 0x050 +#define JH8100_SYS_W_GPIOIBE0 0x054 +#define JH8100_SYS_W_GPIOIEV0 0x058 +#define JH8100_SYS_W_GPIOIE0 0x05c +#define JH8100_SYS_W_GPIORIS0 0x060 +#define JH8100_SYS_W_GPIOMIS0 0x064 + +#define JH8100_SYS_W_GPO_PDA_00_15_CFG 0x074 + +static const struct pinctrl_pin_desc jh8100_sys_w_pins[] = { + PINCTRL_PIN(PAD_GPIO0_W, "SYS_W_GPIO0"), + PINCTRL_PIN(PAD_GPIO1_W, "SYS_W_GPIO1"), + PINCTRL_PIN(PAD_GPIO2_W, "SYS_W_GPIO2"), + PINCTRL_PIN(PAD_GPIO3_W, "SYS_W_GPIO3"), + PINCTRL_PIN(PAD_GPIO4_W, "SYS_W_GPIO4"), + PINCTRL_PIN(PAD_GPIO5_W, "SYS_W_GPIO5"), + PINCTRL_PIN(PAD_GPIO6_W, "SYS_W_GPIO6"), + PINCTRL_PIN(PAD_GPIO7_W, "SYS_W_GPIO7"), + PINCTRL_PIN(PAD_GPIO8_W, "SYS_W_GPIO8"), + PINCTRL_PIN(PAD_GPIO9_W, "SYS_W_GPIO9"), + PINCTRL_PIN(PAD_GPIO10_W, "SYS_W_GPIO10"), + PINCTRL_PIN(PAD_GPIO11_W, "SYS_W_GPIO11"), + PINCTRL_PIN(PAD_GPIO12_W, "SYS_W_GPIO12"), + PINCTRL_PIN(PAD_GPIO13_W, "SYS_W_GPIO13"), + PINCTRL_PIN(PAD_GPIO14_W, "SYS_W_GPIO14"), + PINCTRL_PIN(PAD_GPIO15_W, "SYS_W_GPIO15"), +}; + +struct jh8100_sys_w_func_sel { + u16 offset; + u8 shift; + u8 max; +}; + +static const struct jh8100_sys_w_func_sel + jh8100_sys_w_func_sel[ARRAY_SIZE(jh8100_sys_w_pins)] = { + [PAD_GPIO0_W] = { 0xb4, 0, 2 }, + [PAD_GPIO1_W] = { 0xb4, 12, 2 }, + [PAD_GPIO2_W] = { 0xb4, 14, 2 }, + [PAD_GPIO3_W] = { 0xb4, 16, 2 }, + [PAD_GPIO4_W] = { 0xb4, 18, 2 }, + [PAD_GPIO5_W] = { 0xb4, 20, 2 }, + [PAD_GPIO6_W] = { 0xb4, 22, 2 }, + [PAD_GPIO7_W] = { 0xb4, 24, 2 }, + [PAD_GPIO8_W] = { 0xb4, 26, 2 }, + [PAD_GPIO9_W] = { 0xb4, 28, 2 }, + [PAD_GPIO10_W] = { 0xb4, 2, 2 }, + [PAD_GPIO11_W] = { 0xb4, 4, 2 }, + [PAD_GPIO12_W] = { 0xb4, 6, 2 }, + [PAD_GPIO13_W] = { 0xb4, 8, 2 }, + [PAD_GPIO14_W] = { 0xb4, 10, 2 }, +}; + +static void jh8100_sys_w_set_function(struct jh8100_pinctrl *sfp, + unsigned int pin, u32 func) +{ + const struct jh8100_sys_w_func_sel *fs = &jh8100_sys_w_func_sel[pin]; + unsigned long flags; + void __iomem *reg; + u32 mask; + + if (!fs->offset) + return; + + if (func > fs->max) + return; + + reg = sfp->base + fs->offset; + func = func << fs->shift; + mask = 0x3U << fs->shift; + + raw_spin_lock_irqsave(&sfp->lock, flags); + func |= readl_relaxed(reg) & ~mask; + writel_relaxed(func, reg); + raw_spin_unlock_irqrestore(&sfp->lock, flags); +} + +static int jh8100_sys_w_set_one_pin_mux(struct jh8100_pinctrl *sfp, + unsigned int pin, + unsigned int din, u32 dout, + u32 doen, u32 func) +{ + if (pin < sfp->gc.ngpio - 1 && func == 0) + jh8100_set_gpiomux(sfp, pin, din, dout, doen); + + if (pin < sfp->gc.ngpio - 1 && func == 2) + jh8100_sys_w_set_function(sfp, pin, func); + + return 0; +} + +static int jh8100_sys_w_get_padcfg_base(struct jh8100_pinctrl *sfp, + unsigned int pin) +{ + if (pin <= PAD_GPIO15_W) + return JH8100_SYS_W_GPO_PDA_00_15_CFG; + else + return -1; +} + +static void jh8100_sys_w_irq_handler(struct irq_desc *desc) +{ + struct jh8100_pinctrl *sfp = jh8100_from_irq_desc(desc); + struct irq_chip *chip = irq_desc_get_chip(desc); + unsigned long mis; + unsigned int pin; + + chained_irq_enter(chip, desc); + + mis = readl_relaxed(sfp->base + JH8100_SYS_W_GPIOMIS0); + for_each_set_bit(pin, &mis, 16) + generic_handle_domain_irq(sfp->gc.irq.domain, pin); + + chained_irq_exit(chip, desc); +} + +static int jh8100_sys_w_init_hw(struct gpio_chip *gc) +{ + struct jh8100_pinctrl *sfp = container_of(gc, + struct jh8100_pinctrl, gc); + + /* mask all GPIO interrupts */ + writel(0U, sfp->base + JH8100_SYS_W_GPIOIE0); + /* clear edge interrupt flags */ + writel(0U, sfp->base + JH8100_SYS_W_GPIOIC0); + writel(~0U, sfp->base + JH8100_SYS_W_GPIOIC0); + /* enable GPIO interrupts */ + writel(1U, sfp->base + JH8100_SYS_W_GPIOEN); + + return 0; +} + +#ifdef CONFIG_PM_SLEEP +static int jh8100_sys_w_pinctrl_suspend(struct device *dev) +{ + struct jh8100_pinctrl *sfp; + int i; + + sfp = dev_get_drvdata(dev); + if (!sfp) + return -EINVAL; + + for (i = 0; i < JH8100_SYS_WEST_REG_NUM; i++) + sfp->jh8100_sys_west_regs[i] = readl_relaxed(sfp->base + (i * 4)); + + return pinctrl_force_sleep(sfp->pctl); +} + +static int jh8100_sys_w_pinctrl_resume(struct device *dev) +{ + struct jh8100_pinctrl *sfp; + int i; + + sfp = dev_get_drvdata(dev); + if (!sfp) + return -EINVAL; + + for (i = 0; i < JH8100_SYS_WEST_REG_NUM; i++) + writel_relaxed(sfp->jh8100_sys_west_regs[i], sfp->base + (i * 4)); + + return pinctrl_force_default(sfp->pctl); +} +#endif + +static SIMPLE_DEV_PM_OPS(jh8100_sys_w_pinctrl_dev_pm_ops, + jh8100_sys_w_pinctrl_suspend, + jh8100_sys_w_pinctrl_resume); + +static const struct jh8100_gpio_irq_reg jh8100_sys_w_irq_reg = { + .is_reg_base = JH8100_SYS_W_GPIOIS0, + .ic_reg_base = JH8100_SYS_W_GPIOIC0, + .ibe_reg_base = JH8100_SYS_W_GPIOIBE0, + .iev_reg_base = JH8100_SYS_W_GPIOIEV0, + .ie_reg_base = JH8100_SYS_W_GPIOIE0, + .ris_reg_base = JH8100_SYS_W_GPIORIS0, + .mis_reg_base = JH8100_SYS_W_GPIOMIS0, +}; + +static const struct jh8100_pinctrl_soc_info jh8100_sys_w_pinctrl_info = { + .pins = jh8100_sys_w_pins, + .npins = ARRAY_SIZE(jh8100_sys_w_pins), + .ngpios = JH8100_SYS_W_NGPIO, + .gc_base = JH8100_SYS_W_GC_BASE, + .dout_reg_base = JH8100_SYS_W_DOUT, + .dout_mask = GENMASK(5, 0), + .doen_reg_base = JH8100_SYS_W_DOEN, + .doen_mask = GENMASK(4, 0), + .gpi_reg_base = JH8100_SYS_W_GPI, + .gpi_mask = GENMASK(4, 0), + .gpioin_reg_base = JH8100_SYS_W_GPIOIN, + .irq_reg = &jh8100_sys_w_irq_reg, + .jh8100_set_one_pin_mux = jh8100_sys_w_set_one_pin_mux, + .jh8100_get_padcfg_base = jh8100_sys_w_get_padcfg_base, + .jh8100_gpio_irq_handler = jh8100_sys_w_irq_handler, + .jh8100_gpio_init_hw = jh8100_sys_w_init_hw, +}; + +static const struct of_device_id jh8100_sys_w_pinctrl_of_match[] = { + { + .compatible = "starfive,jh8100-sys-pinctrl-west", + .data = &jh8100_sys_w_pinctrl_info, + }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, jh8100_sys_w_pinctrl_of_match); + +static struct platform_driver jh8100_sys_w_pinctrl_driver = { + .probe = jh8100_pinctrl_probe, + .driver = { + .name = "starfive-jh8100-sys-pinctrl-west", +#ifdef CONFIG_PM_SLEEP + .pm = &jh8100_sys_w_pinctrl_dev_pm_ops, +#endif + .of_match_table = jh8100_sys_w_pinctrl_of_match, + }, +}; +module_platform_driver(jh8100_sys_w_pinctrl_driver); + +MODULE_DESCRIPTION("Pinctrl driver for the StarFive JH8100 SoC sys west controller"); +MODULE_AUTHOR("Alex Soo "); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/pinctrl/starfive/pinctrl-starfive-jh8100.h b/drivers/pinctrl/starfive/pinctrl-starfive-jh8100.h index d84b88c0568d..6264931ddb82 100644 --- a/drivers/pinctrl/starfive/pinctrl-starfive-jh8100.h +++ b/drivers/pinctrl/starfive/pinctrl-starfive-jh8100.h @@ -13,6 +13,7 @@ #include #include +#define JH8100_SYS_WEST_REG_NUM 44 #define JH8100_SYS_EAST_REG_NUM 116 struct jh8100_pinctrl { @@ -25,6 +26,7 @@ struct jh8100_pinctrl { /* register read/write mutex */ struct mutex mutex; const struct jh8100_pinctrl_soc_info *info; + unsigned int jh8100_sys_west_regs[JH8100_SYS_WEST_REG_NUM]; unsigned int jh8100_sys_east_regs[JH8100_SYS_EAST_REG_NUM]; /* wakeup */ int wakeup_gpio;