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Tue, 20 Feb 2024 06:43:07 +0000 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: linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-riscv@lists.infradead.org, Paul Walmsley , Palmer Dabbelt , Albert Ou , Alex Soo Subject: [RFC PATCH v2 3/6] pinctrl: starfive: jh8100: add pinctrl driver for sys_west domain Date: Tue, 20 Feb 2024 14:42:43 +0800 Message-ID: <20240220064246.467216-4-yuklin.soo@starfivetech.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240220064246.467216-1-yuklin.soo@starfivetech.com> References: <20240220064246.467216-1-yuklin.soo@starfivetech.com> X-ClientProxiedBy: BJXPR01CA0055.CHNPR01.prod.partner.outlook.cn (2406:e500:c211:12::22) To ZQ0PR01MB1302.CHNPR01.prod.partner.outlook.cn (2406:e500:c550:1b::9) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: ZQ0PR01MB1302:EE_|ZQ0PR01MB1239:EE_ X-MS-Office365-Filtering-Correlation-Id: d11f398d-35b5-49b2-b758-08dc31df3280 X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; 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Signed-off-by: Alex Soo --- drivers/pinctrl/starfive/Kconfig | 12 ++ drivers/pinctrl/starfive/Makefile | 1 + .../pinctrl-starfive-jh8100-sys-west.c | 168 ++++++++++++++++++ .../starfive/pinctrl-starfive-jh8100.h | 4 + 4 files changed, 185 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..0aebb30596af --- /dev/null +++ b/drivers/pinctrl/starfive/pinctrl-starfive-jh8100-sys-west.c @@ -0,0 +1,168 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Pinctrl / GPIO driver for StarFive JH8100 SoC sys west controller + * + * Copyright (C) 2023-2024 StarFive Technology Co., Ltd. + * Author: Alex Soo + * + */ + +#include +#include +#include +#include +#include + +#include + +#include "../core.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 + +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"), +}; + +static const struct jh8100_gpio_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 }, +}; + +#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 < sfp->info->nregs; 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 < sfp->info->nregs; 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, + .ien_reg_base = JH8100_SYS_W_GPIOEN, +}; + +static const struct jh8100_pinctrl_domain_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, + .name = JH8100_SYS_W_DOMAIN_NAME, + .nregs = JH8100_SYS_W_REG_NUM, + .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, + .func_sel = jh8100_sys_w_func_sel, + .irq_reg = &jh8100_sys_w_irq_reg, + .mis_pin_num = JH8100_SYS_W_NGPIO, +}; + +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 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 920cdd8b6376..92d3b5d6de40 100644 --- a/drivers/pinctrl/starfive/pinctrl-starfive-jh8100.h +++ b/drivers/pinctrl/starfive/pinctrl-starfive-jh8100.h @@ -13,10 +13,13 @@ #include #include +#define JH8100_SYS_W_DOMAIN_NAME "jh8100-sys-west" #define JH8100_SYS_E_DOMAIN_NAME "jh8100-sys-east" +#define JH8100_SYS_W_REG_NUM 44 #define JH8100_SYS_E_REG_NUM 116 +#define JH8100_SYS_W_GPO_PDA_00_15_CFG 0x074 #define JH8100_SYS_E_GPO_PDA_00_47_CFG 0x114 struct jh8100_pinctrl { @@ -29,6 +32,7 @@ struct jh8100_pinctrl { /* register read/write mutex */ struct mutex mutex; const struct jh8100_pinctrl_domain_info *info; + unsigned int jh8100_sys_west_regs[JH8100_SYS_W_REG_NUM]; unsigned int jh8100_sys_east_regs[JH8100_SYS_E_REG_NUM]; /* wakeup */ int wakeup_gpio;