From patchwork Thu Dec 21 08:36:20 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alex Soo X-Patchwork-Id: 757293 Received: from ex01.ufhost.com (ex01.ufhost.com [61.152.239.75]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6BAF6208B9; Thu, 21 Dec 2023 08:36:59 +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 EXMBX166.cuchost.com (unknown [175.102.18.54]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "EXMBX166", Issuer "EXMBX166" (not verified)) by ex01.ufhost.com (Postfix) with ESMTP id D96D024E2A8; Thu, 21 Dec 2023 16:36:57 +0800 (CST) Received: from EXMBX066.cuchost.com (172.16.7.66) by EXMBX166.cuchost.com (172.16.6.76) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Thu, 21 Dec 2023 16:36:57 +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 16:36:51 +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 4/6] pinctrl: starfive: jh8100: add pinctrl driver for sys_gmac domain Date: Thu, 21 Dec 2023 16:36:20 +0800 Message-ID: <20231221083622.3445726-5-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: linux-gpio@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_gmac 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-gmac.c | 164 ++++++++++++++++++ .../starfive/pinctrl-starfive-jh8100.h | 2 + 4 files changed, 179 insertions(+) create mode 100644 drivers/pinctrl/starfive/pinctrl-starfive-jh8100-sys-gmac.c diff --git a/drivers/pinctrl/starfive/Kconfig b/drivers/pinctrl/starfive/Kconfig index d78f161a636c..bb1fb3788d5b 100644 --- a/drivers/pinctrl/starfive/Kconfig +++ b/drivers/pinctrl/starfive/Kconfig @@ -82,3 +82,15 @@ config PINCTRL_STARFIVE_JH8100_SYS_WEST 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_GMAC + tristate "StarFive JH8100 SoC System IOMUX-GMAC 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-gmac pin control on the StarFive JH8100 SoC. + This also provides a syscon interface to configure the GMAC1 voltage level for RGMII(1.8V + 2.5V), GMII(2.5V/3.3V), to configure the SDIO1 voltage level to support the 3.3/1.8V voltage + switching in high-speed mode, and configure the GMAC1 network interface and timing (slew rate). diff --git a/drivers/pinctrl/starfive/Makefile b/drivers/pinctrl/starfive/Makefile index 784465157ae2..236a693a8aef 100644 --- a/drivers/pinctrl/starfive/Makefile +++ b/drivers/pinctrl/starfive/Makefile @@ -9,3 +9,4 @@ 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 +obj-$(CONFIG_PINCTRL_STARFIVE_JH8100_SYS_GMAC) += pinctrl-starfive-jh8100-sys-gmac.o diff --git a/drivers/pinctrl/starfive/pinctrl-starfive-jh8100-sys-gmac.c b/drivers/pinctrl/starfive/pinctrl-starfive-jh8100-sys-gmac.c new file mode 100644 index 000000000000..dbbac86dd265 --- /dev/null +++ b/drivers/pinctrl/starfive/pinctrl-starfive-jh8100-sys-gmac.c @@ -0,0 +1,164 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Pinctrl / GPIO driver for StarFive JH8100 SoC sys gmac 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 "../core.h" +#include "../pinctrl-utils.h" +#include "../pinmux.h" +#include "../pinconf.h" +#include "pinctrl-starfive-jh8100.h" + +#define JH8100_SYS_G_NGPIO 0 +#define JH8100_SYS_G_GC_BASE 64 + +static const struct pinctrl_pin_desc jh8100_sys_gmac_pins[] = { + PINCTRL_PIN(PAD_GMAC1_MDC, "SYS_G_GMAC1_MDC"), + PINCTRL_PIN(PAD_GMAC1_MDIO, "SYS_G_GMAC1_MDIO"), + PINCTRL_PIN(PAD_GMAC1_RXD0, "SYS_G_GMAC1_RXD0"), + PINCTRL_PIN(PAD_GMAC1_RXD1, "SYS_G_GMAC1_RXD1"), + PINCTRL_PIN(PAD_GMAC1_RXD2, "SYS_G_GMAC1_RXD2"), + PINCTRL_PIN(PAD_GMAC1_RXD3, "SYS_G_GMAC1_RXD3"), + PINCTRL_PIN(PAD_GMAC1_RXDV, "SYS_G_GMAC1_RXDV"), + PINCTRL_PIN(PAD_GMAC1_RXC, "SYS_G_GMAC1_RXC"), + PINCTRL_PIN(PAD_GMAC1_TXD0, "SYS_G_GMAC1_TXD0"), + PINCTRL_PIN(PAD_GMAC1_TXD1, "SYS_G_GMAC1_TXD1"), + PINCTRL_PIN(PAD_GMAC1_TXD2, "SYS_G_GMAC1_TXD2"), + PINCTRL_PIN(PAD_GMAC1_TXD3, "SYS_G_GMAC1_TXD3"), + PINCTRL_PIN(PAD_GMAC1_TXEN, "SYS_G_GMAC1_TXEN"), + PINCTRL_PIN(PAD_GMAC1_TXC, "SYS_G_GMAC1_TXC") +}; + +struct jh8100_sys_gmac_func_sel { + u16 offset; + u8 shift; + u8 max; +}; + +static const struct jh8100_sys_gmac_func_sel + jh8100_sys_gmac_func_sel[ARRAY_SIZE(jh8100_sys_gmac_pins)] = { + [PAD_GMAC1_RXC] = { 0x048, 0, 2 }, +}; + +static void jh8100_sys_gmac_set_function(struct jh8100_pinctrl *sfp, + unsigned int pin, u32 func) +{ + const struct jh8100_sys_gmac_func_sel *fs = &jh8100_sys_gmac_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_gmac_set_one_pin_mux(struct jh8100_pinctrl *sfp, + unsigned int pin, + unsigned int din, u32 dout, + u32 doen, u32 func) +{ + jh8100_sys_gmac_set_function(sfp, pin, func); + + return 0; +} + +#ifdef CONFIG_PM_SLEEP +static int jh8100_sys_gmac_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_GMAC_REG_NUM; i++) + sfp->jh8100_sys_gmac_regs[i] = readl_relaxed(sfp->base + (i * 4)); + + return pinctrl_force_sleep(sfp->pctl); +} + +static int jh8100_sys_gmac_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_GMAC_REG_NUM; i++) + writel_relaxed(sfp->jh8100_sys_gmac_regs[i], sfp->base + (i * 4)); + + return pinctrl_force_default(sfp->pctl); +} +#endif + +static SIMPLE_DEV_PM_OPS(jh8100_sys_gmac_pinctrl_dev_pm_ops, + jh8100_sys_gmac_pinctrl_suspend, + jh8100_sys_gmac_pinctrl_resume); + +static const struct jh8100_pinctrl_soc_info jh8100_sys_gmac_pinctrl_info = { + .pins = jh8100_sys_gmac_pins, + .npins = ARRAY_SIZE(jh8100_sys_gmac_pins), + .ngpios = JH8100_SYS_G_NGPIO, + .gc_base = JH8100_SYS_G_GC_BASE, + .jh8100_set_one_pin_mux = jh8100_sys_gmac_set_one_pin_mux, +}; + +static const struct of_device_id jh8100_sys_gmac_pinctrl_of_match[] = { + { + .compatible = "starfive,jh8100-sys-pinctrl-gmac", + .data = &jh8100_sys_gmac_pinctrl_info, + }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, jh8100_sys_gmac_pinctrl_of_match); + +static struct platform_driver jh8100_sys_gmac_pinctrl_driver = { + .probe = jh8100_pinctrl_probe, + .driver = { + .name = "starfive-jh8100-sys-pinctrl-gmac", +#ifdef CONFIG_PM_SLEEP + .pm = &jh8100_sys_gmac_pinctrl_dev_pm_ops, +#endif + .of_match_table = jh8100_sys_gmac_pinctrl_of_match, + }, +}; +module_platform_driver(jh8100_sys_gmac_pinctrl_driver); + +MODULE_DESCRIPTION("Pinctrl driver for the StarFive JH8100 SoC sys gmac 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 6264931ddb82..43b62609fa3e 100644 --- a/drivers/pinctrl/starfive/pinctrl-starfive-jh8100.h +++ b/drivers/pinctrl/starfive/pinctrl-starfive-jh8100.h @@ -15,6 +15,7 @@ #define JH8100_SYS_WEST_REG_NUM 44 #define JH8100_SYS_EAST_REG_NUM 116 +#define JH8100_SYS_GMAC_REG_NUM 19 struct jh8100_pinctrl { struct device *dev; @@ -28,6 +29,7 @@ struct jh8100_pinctrl { 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]; + unsigned int jh8100_sys_gmac_regs[JH8100_SYS_GMAC_REG_NUM]; /* wakeup */ int wakeup_gpio; int wakeup_irq;