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Sat, 17 Oct 2026 05:25:50 +0000 From: Changhuang Liang To: Linus Walleij , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: Arnd Bergmann , Bartosz Golaszewski , linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Lianfeng Ouyang , Changhuang Liang Subject: [PATCH v1 8/8] pinctrl: starfive: Add StarFive JHB100 vga controller driver Date: Fri, 16 Oct 2026 22:25:34 -0700 Message-Id: <20261017052534.115203-9-changhuang.liang@starfivetech.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20261017052534.115203-1-changhuang.liang@starfivetech.com> References: <20261017052534.115203-1-changhuang.liang@starfivetech.com> Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: NT0PR01CA0031.CHNPR01.prod.partner.outlook.cn (2406:e500:c510:c::14) To ZQ4PR01MB1202.CHNPR01.prod.partner.outlook.cn (2406:e500:c550:17::6) 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: ZQ4PR01MB1202:EE_|ZQ4PR01MB1220:EE_ X-MS-Office365-Filtering-Correlation-Id: 1c6e4d69-3947-4094-622a-08df2c0f1b33 X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0;ARA:13230040|23010399003|1800799024|366016|52116014|376014|38350700014|56012099006|5023799004|261009223027099003|10067099003|18002099003|22082099003|6133799003|3023799007; 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Co-developed-by: Lianfeng Ouyang Signed-off-by: Lianfeng Ouyang Signed-off-by: Alex Soo Signed-off-by: Changhuang Liang --- drivers/pinctrl/starfive/Kconfig | 11 +++ drivers/pinctrl/starfive/Makefile | 1 + .../starfive/pinctrl-starfive-jhb100-vga.c | 86 +++++++++++++++++++ 3 files changed, 98 insertions(+) create mode 100644 drivers/pinctrl/starfive/pinctrl-starfive-jhb100-vga.c diff --git a/drivers/pinctrl/starfive/Kconfig b/drivers/pinctrl/starfive/Kconfig index 76f2d59e8a8d..5b10b0a22078 100644 --- a/drivers/pinctrl/starfive/Kconfig +++ b/drivers/pinctrl/starfive/Kconfig @@ -185,3 +185,14 @@ config PINCTRL_STARFIVE_JHB100_SYS2 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_JHB100_VGA + tristate "StarFive JHB100 SoC VGA pinctrl and GPIO driver" + depends on ARCH_STARFIVE || COMPILE_TEST + select PINCTRL_STARFIVE_JHB100 + default m if ARCH_STARFIVE + help + Say yes here to support VGA pin control on the StarFive JHB100 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 d570b192b260..170b24a7f29f 100644 --- a/drivers/pinctrl/starfive/Makefile +++ b/drivers/pinctrl/starfive/Makefile @@ -19,3 +19,4 @@ obj-$(CONFIG_PINCTRL_STARFIVE_JHB100_SYS0) += pinctrl-starfive-jhb100-sys0.o obj-$(CONFIG_PINCTRL_STARFIVE_JHB100_SYS0H) += pinctrl-starfive-jhb100-sys0h.o obj-$(CONFIG_PINCTRL_STARFIVE_JHB100_SYS1) += pinctrl-starfive-jhb100-sys1.o obj-$(CONFIG_PINCTRL_STARFIVE_JHB100_SYS2) += pinctrl-starfive-jhb100-sys2.o +obj-$(CONFIG_PINCTRL_STARFIVE_JHB100_VGA) += pinctrl-starfive-jhb100-vga.o diff --git a/drivers/pinctrl/starfive/pinctrl-starfive-jhb100-vga.c b/drivers/pinctrl/starfive/pinctrl-starfive-jhb100-vga.c new file mode 100644 index 000000000000..8cdabd91016f --- /dev/null +++ b/drivers/pinctrl/starfive/pinctrl-starfive-jhb100-vga.c @@ -0,0 +1,86 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Pinctrl / GPIO driver for StarFive JHB100 SoC VGA domain + * + * Copyright (C) 2024 StarFive Technology Co., Ltd. + * Author: Alex Soo + * + */ + +#include + +#include "pinctrl-starfive-jhb100.h" + +static const struct jhb100_pin_layout_desc jhb100_vga_pl_desc[] = { + { .pin_start = 0, .pin_cnt = 1, .name = "hsync", .gpio_func_sel = 1 }, + { .pin_start = 1, .pin_cnt = 1, .name = "vsync", .gpio_func_sel = 1 }, + { .pin_start = 2, .pin_cnt = 1, .name = "ddcclk", .gpio_func_sel = 1 }, + { .pin_start = 3, .pin_cnt = 1, .name = "ddcdat", .gpio_func_sel = 1 }, + { 0xff }, +}; + +static const struct config_reg_layout_desc jhb100_vga_pinctrl_crl_desc[] = { + { + .pin_start = 0, + .pin_cnt = 4, + .fields[PAD_CFG_DRIVE_STRENGTH_3BIT] = { .shift = 0, .width = 3 }, + .fields[PAD_CFG_INPUT_ENABLE] = { .shift = 3, .width = 1 }, + .fields[PAD_CFG_PULL_DOWN] = { .shift = 4, .width = 1 }, + .fields[PAD_CFG_PULL_UP] = { .shift = 5, .width = 1 }, + .fields[PAD_CFG_SLEW_RATE] = { .shift = 6, .width = 1 }, + .fields[PAD_CFG_SCHMITT_TRIGGER_SELECT] = { .shift = 7, .width = 1 }, + .fields[PAD_CFG_DEBOUNCE_WIDTH] = { .shift = 15, .width = 17 }, + }, + { 0xff }, +}; + +static const struct starfive_pinctrl_regs jhb100_vga_pinctrl_regs = { + .func_sel = { .reg = 0x1c, .width_per_pin = 2 }, + .config = 0x00, + .output = 0x10, + .output_en = 0x14, + .gpio_status = 0x18, + .irq_en = 0x20, + .irq_status = 0x24, + .irq_clr = 0x28, + .irq_trigger = 0x2c, + .irq_level = 0x30, + .irq_both_edge = 0x34, + .irq_edge = 0x38, +}; + +static const struct jhb100_pinctrl_func_maps jhb100_func_maps_vga[] = { + { .func = "gpio", .val = 1 }, + { .func = "vga", .val = 0 }, +}; + +static const struct jhb100_pinctrl_domain_info jhb100_vga_pinctrl_info = { + .name = "jhb100-vga", + .pl_desc = jhb100_vga_pl_desc, + .crl_desc = jhb100_vga_pinctrl_crl_desc, + .regs = &jhb100_vga_pinctrl_regs, + .fmaps = jhb100_func_maps_vga, + .num_maps = ARRAY_SIZE(jhb100_func_maps_vga), +}; + +static const struct of_device_id jhb100_vga_pinctrl_of_match[] = { + { + .compatible = "starfive,jhb100-vga-pinctrl", + .data = &jhb100_vga_pinctrl_info, + }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, jhb100_vga_pinctrl_of_match); + +static struct platform_driver jhb100_vga_pinctrl_driver = { + .probe = jhb100_pinctrl_probe, + .driver = { + .name = "starfive-jhb100-vga-pinctrl", + .of_match_table = jhb100_vga_pinctrl_of_match, + }, +}; +module_platform_driver(jhb100_vga_pinctrl_driver); + +MODULE_DESCRIPTION("Pinctrl driver for StarFive JHB100 SoC VGA domain"); +MODULE_AUTHOR("Alex Soo "); +MODULE_LICENSE("GPL"); -- 2.25.1