diff options
author | Jianlong Huang <jianlong.huang@starfivetech.com> | 2023-02-09 22:37:01 +0800 |
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committer | Linus Walleij <linus.walleij@linaro.org> | 2023-02-10 23:44:07 +0100 |
commit | 447976ab62c5dd6016f06a2f24798407398b5c07 (patch) | |
tree | 4a33423e70d4ac6ed4c3750642d83278fefe6ad8 | |
parent | 716129d3b76d060bdfbdfa6cec7091a9fe7729d2 (diff) | |
download | linux-447976ab62c5dd6016f06a2f24798407398b5c07.tar.gz linux-447976ab62c5dd6016f06a2f24798407398b5c07.tar.bz2 linux-447976ab62c5dd6016f06a2f24798407398b5c07.zip |
pinctrl: starfive: Add StarFive JH7110 sys controller driver
Add pinctrl driver for StarFive JH7110 SoC sys pinctrl controller.
Co-developed-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Jianlong Huang <jianlong.huang@starfivetech.com>
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>
Link: https://lore.kernel.org/r/20230209143702.44408-4-hal.feng@starfivetech.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
-rw-r--r-- | MAINTAINERS | 2 | ||||
-rw-r--r-- | drivers/pinctrl/starfive/Kconfig | 21 | ||||
-rw-r--r-- | drivers/pinctrl/starfive/Makefile | 3 | ||||
-rw-r--r-- | drivers/pinctrl/starfive/pinctrl-starfive-jh7110-sys.c | 449 | ||||
-rw-r--r-- | drivers/pinctrl/starfive/pinctrl-starfive-jh7110.c | 982 | ||||
-rw-r--r-- | drivers/pinctrl/starfive/pinctrl-starfive-jh7110.h | 70 |
6 files changed, 1526 insertions, 1 deletions
diff --git a/MAINTAINERS b/MAINTAINERS index babd133cdc4b..8a851eb053ca 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -19896,7 +19896,7 @@ M: Jianlong Huang <jianlong.huang@starfivetech.com> L: linux-gpio@vger.kernel.org S: Maintained F: Documentation/devicetree/bindings/pinctrl/starfive,jh71*.yaml -F: drivers/pinctrl/starfive/ +F: drivers/pinctrl/starfive/pinctrl-starfive-jh71* F: include/dt-bindings/pinctrl/pinctrl-starfive-jh7100.h F: include/dt-bindings/pinctrl/starfive,jh7110-pinctrl.h diff --git a/drivers/pinctrl/starfive/Kconfig b/drivers/pinctrl/starfive/Kconfig index 55c514e622f9..453c8a0b3118 100644 --- a/drivers/pinctrl/starfive/Kconfig +++ b/drivers/pinctrl/starfive/Kconfig @@ -16,3 +16,24 @@ config PINCTRL_STARFIVE_JH7100 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_JH7110 + bool + select GENERIC_PINCTRL_GROUPS + select GENERIC_PINMUX_FUNCTIONS + select GENERIC_PINCONF + select GPIOLIB + select GPIOLIB_IRQCHIP + select OF_GPIO + +config PINCTRL_STARFIVE_JH7110_SYS + tristate "System pinctrl and GPIO driver for the StarFive JH7110 SoC" + depends on SOC_STARFIVE || COMPILE_TEST + depends on OF + select PINCTRL_STARFIVE_JH7110 + default SOC_STARFIVE + help + Say yes here to support system pin control on the StarFive JH7110 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 0293f26a0a99..dc2d1e392314 100644 --- a/drivers/pinctrl/starfive/Makefile +++ b/drivers/pinctrl/starfive/Makefile @@ -1,3 +1,6 @@ # SPDX-License-Identifier: GPL-2.0 obj-$(CONFIG_PINCTRL_STARFIVE_JH7100) += pinctrl-starfive-jh7100.o + +obj-$(CONFIG_PINCTRL_STARFIVE_JH7110) += pinctrl-starfive-jh7110.o +obj-$(CONFIG_PINCTRL_STARFIVE_JH7110_SYS) += pinctrl-starfive-jh7110-sys.o diff --git a/drivers/pinctrl/starfive/pinctrl-starfive-jh7110-sys.c b/drivers/pinctrl/starfive/pinctrl-starfive-jh7110-sys.c new file mode 100644 index 000000000000..bc279a39613f --- /dev/null +++ b/drivers/pinctrl/starfive/pinctrl-starfive-jh7110-sys.c @@ -0,0 +1,449 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Pinctrl / GPIO driver for StarFive JH7110 SoC sys controller + * + * Copyright (C) 2022 Emil Renner Berthing <kernel@esmil.dk> + * Copyright (C) 2022 StarFive Technology Co., Ltd. + */ + +#include <linux/bits.h> +#include <linux/clk.h> +#include <linux/gpio/driver.h> +#include <linux/io.h> +#include <linux/mod_devicetable.h> +#include <linux/module.h> +#include <linux/mutex.h> +#include <linux/of.h> +#include <linux/of_device.h> +#include <linux/platform_device.h> +#include <linux/reset.h> +#include <linux/spinlock.h> + +#include <linux/pinctrl/pinctrl.h> +#include <linux/pinctrl/pinmux.h> + +#include <dt-bindings/pinctrl/starfive,jh7110-pinctrl.h> + +#include "../core.h" +#include "../pinctrl-utils.h" +#include "../pinmux.h" +#include "../pinconf.h" +#include "pinctrl-starfive-jh7110.h" + +#define JH7110_SYS_NGPIO 64 +#define JH7110_SYS_GC_BASE 0 + +/* registers */ +#define JH7110_SYS_DOEN 0x000 +#define JH7110_SYS_DOUT 0x040 +#define JH7110_SYS_GPI 0x080 +#define JH7110_SYS_GPIOIN 0x118 + +#define JH7110_SYS_GPIOEN 0x0dc +#define JH7110_SYS_GPIOIS0 0x0e0 +#define JH7110_SYS_GPIOIS1 0x0e4 +#define JH7110_SYS_GPIOIC0 0x0e8 +#define JH7110_SYS_GPIOIC1 0x0ec +#define JH7110_SYS_GPIOIBE0 0x0f0 +#define JH7110_SYS_GPIOIBE1 0x0f4 +#define JH7110_SYS_GPIOIEV0 0x0f8 +#define JH7110_SYS_GPIOIEV1 0x0fc +#define JH7110_SYS_GPIOIE0 0x100 +#define JH7110_SYS_GPIOIE1 0x104 +#define JH7110_SYS_GPIORIS0 0x108 +#define JH7110_SYS_GPIORIS1 0x10c +#define JH7110_SYS_GPIOMIS0 0x110 +#define JH7110_SYS_GPIOMIS1 0x114 + +#define JH7110_SYS_GPO_PDA_0_74_CFG 0x120 +#define JH7110_SYS_GPO_PDA_89_94_CFG 0x284 + +static const struct pinctrl_pin_desc jh7110_sys_pins[] = { + PINCTRL_PIN(PAD_GPIO0, "GPIO0"), + PINCTRL_PIN(PAD_GPIO1, "GPIO1"), + PINCTRL_PIN(PAD_GPIO2, "GPIO2"), + PINCTRL_PIN(PAD_GPIO3, "GPIO3"), + PINCTRL_PIN(PAD_GPIO4, "GPIO4"), + PINCTRL_PIN(PAD_GPIO5, "GPIO5"), + PINCTRL_PIN(PAD_GPIO6, "GPIO6"), + PINCTRL_PIN(PAD_GPIO7, "GPIO7"), + PINCTRL_PIN(PAD_GPIO8, "GPIO8"), + PINCTRL_PIN(PAD_GPIO9, "GPIO9"), + PINCTRL_PIN(PAD_GPIO10, "GPIO10"), + PINCTRL_PIN(PAD_GPIO11, "GPIO11"), + PINCTRL_PIN(PAD_GPIO12, "GPIO12"), + PINCTRL_PIN(PAD_GPIO13, "GPIO13"), + PINCTRL_PIN(PAD_GPIO14, "GPIO14"), + PINCTRL_PIN(PAD_GPIO15, "GPIO15"), + PINCTRL_PIN(PAD_GPIO16, "GPIO16"), + PINCTRL_PIN(PAD_GPIO17, "GPIO17"), + PINCTRL_PIN(PAD_GPIO18, "GPIO18"), + PINCTRL_PIN(PAD_GPIO19, "GPIO19"), + PINCTRL_PIN(PAD_GPIO20, "GPIO20"), + PINCTRL_PIN(PAD_GPIO21, "GPIO21"), + PINCTRL_PIN(PAD_GPIO22, "GPIO22"), + PINCTRL_PIN(PAD_GPIO23, "GPIO23"), + PINCTRL_PIN(PAD_GPIO24, "GPIO24"), + PINCTRL_PIN(PAD_GPIO25, "GPIO25"), + PINCTRL_PIN(PAD_GPIO26, "GPIO26"), + PINCTRL_PIN(PAD_GPIO27, "GPIO27"), + PINCTRL_PIN(PAD_GPIO28, "GPIO28"), + PINCTRL_PIN(PAD_GPIO29, "GPIO29"), + PINCTRL_PIN(PAD_GPIO30, "GPIO30"), + PINCTRL_PIN(PAD_GPIO31, "GPIO31"), + PINCTRL_PIN(PAD_GPIO32, "GPIO32"), + PINCTRL_PIN(PAD_GPIO33, "GPIO33"), + PINCTRL_PIN(PAD_GPIO34, "GPIO34"), + PINCTRL_PIN(PAD_GPIO35, "GPIO35"), + PINCTRL_PIN(PAD_GPIO36, "GPIO36"), + PINCTRL_PIN(PAD_GPIO37, "GPIO37"), + PINCTRL_PIN(PAD_GPIO38, "GPIO38"), + PINCTRL_PIN(PAD_GPIO39, "GPIO39"), + PINCTRL_PIN(PAD_GPIO40, "GPIO40"), + PINCTRL_PIN(PAD_GPIO41, "GPIO41"), + PINCTRL_PIN(PAD_GPIO42, "GPIO42"), + PINCTRL_PIN(PAD_GPIO43, "GPIO43"), + PINCTRL_PIN(PAD_GPIO44, "GPIO44"), + PINCTRL_PIN(PAD_GPIO45, "GPIO45"), + PINCTRL_PIN(PAD_GPIO46, "GPIO46"), + PINCTRL_PIN(PAD_GPIO47, "GPIO47"), + PINCTRL_PIN(PAD_GPIO48, "GPIO48"), + PINCTRL_PIN(PAD_GPIO49, "GPIO49"), + PINCTRL_PIN(PAD_GPIO50, "GPIO50"), + PINCTRL_PIN(PAD_GPIO51, "GPIO51"), + PINCTRL_PIN(PAD_GPIO52, "GPIO52"), + PINCTRL_PIN(PAD_GPIO53, "GPIO53"), + PINCTRL_PIN(PAD_GPIO54, "GPIO54"), + PINCTRL_PIN(PAD_GPIO55, "GPIO55"), + PINCTRL_PIN(PAD_GPIO56, "GPIO56"), + PINCTRL_PIN(PAD_GPIO57, "GPIO57"), + PINCTRL_PIN(PAD_GPIO58, "GPIO58"), + PINCTRL_PIN(PAD_GPIO59, "GPIO59"), + PINCTRL_PIN(PAD_GPIO60, "GPIO60"), + PINCTRL_PIN(PAD_GPIO61, "GPIO61"), + PINCTRL_PIN(PAD_GPIO62, "GPIO62"), + PINCTRL_PIN(PAD_GPIO63, "GPIO63"), + PINCTRL_PIN(PAD_SD0_CLK, "SD0_CLK"), + PINCTRL_PIN(PAD_SD0_CMD, "SD0_CMD"), + PINCTRL_PIN(PAD_SD0_DATA0, "SD0_DATA0"), + PINCTRL_PIN(PAD_SD0_DATA1, "SD0_DATA1"), + PINCTRL_PIN(PAD_SD0_DATA2, "SD0_DATA2"), + PINCTRL_PIN(PAD_SD0_DATA3, "SD0_DATA3"), + PINCTRL_PIN(PAD_SD0_DATA4, "SD0_DATA4"), + PINCTRL_PIN(PAD_SD0_DATA5, "SD0_DATA5"), + PINCTRL_PIN(PAD_SD0_DATA6, "SD0_DATA6"), + PINCTRL_PIN(PAD_SD0_DATA7, "SD0_DATA7"), + PINCTRL_PIN(PAD_SD0_STRB, "SD0_STRB"), + PINCTRL_PIN(PAD_GMAC1_MDC, "GMAC1_MDC"), + PINCTRL_PIN(PAD_GMAC1_MDIO, "GMAC1_MDIO"), + PINCTRL_PIN(PAD_GMAC1_RXD0, "GMAC1_RXD0"), + PINCTRL_PIN(PAD_GMAC1_RXD1, "GMAC1_RXD1"), + PINCTRL_PIN(PAD_GMAC1_RXD2, "GMAC1_RXD2"), + PINCTRL_PIN(PAD_GMAC1_RXD3, "GMAC1_RXD3"), + PINCTRL_PIN(PAD_GMAC1_RXDV, "GMAC1_RXDV"), + PINCTRL_PIN(PAD_GMAC1_RXC, "GMAC1_RXC"), + PINCTRL_PIN(PAD_GMAC1_TXD0, "GMAC1_TXD0"), + PINCTRL_PIN(PAD_GMAC1_TXD1, "GMAC1_TXD1"), + PINCTRL_PIN(PAD_GMAC1_TXD2, "GMAC1_TXD2"), + PINCTRL_PIN(PAD_GMAC1_TXD3, "GMAC1_TXD3"), + PINCTRL_PIN(PAD_GMAC1_TXEN, "GMAC1_TXEN"), + PINCTRL_PIN(PAD_GMAC1_TXC, "GMAC1_TXC"), + PINCTRL_PIN(PAD_QSPI_SCLK, "QSPI_SCLK"), + PINCTRL_PIN(PAD_QSPI_CS0, "QSPI_CS0"), + PINCTRL_PIN(PAD_QSPI_DATA0, "QSPI_DATA0"), + PINCTRL_PIN(PAD_QSPI_DATA1, "QSPI_DATA1"), + PINCTRL_PIN(PAD_QSPI_DATA2, "QSPI_DATA2"), + PINCTRL_PIN(PAD_QSPI_DATA3, "QSPI_DATA3"), +}; + +struct jh7110_func_sel { + u16 offset; + u8 shift; + u8 max; +}; + +static const struct jh7110_func_sel + jh7110_sys_func_sel[ARRAY_SIZE(jh7110_sys_pins)] = { + [PAD_GMAC1_RXC] = { 0x29c, 0, 1 }, + [PAD_GPIO10] = { 0x29c, 2, 3 }, + [PAD_GPIO11] = { 0x29c, 5, 3 }, + [PAD_GPIO12] = { 0x29c, 8, 3 }, + [PAD_GPIO13] = { 0x29c, 11, 3 }, + [PAD_GPIO14] = { 0x29c, 14, 3 }, + [PAD_GPIO15] = { 0x29c, 17, 3 }, + [PAD_GPIO16] = { 0x29c, 20, 3 }, + [PAD_GPIO17] = { 0x29c, 23, 3 }, + [PAD_GPIO18] = { 0x29c, 26, 3 }, + [PAD_GPIO19] = { 0x29c, 29, 3 }, + + [PAD_GPIO20] = { 0x2a0, 0, 3 }, + [PAD_GPIO21] = { 0x2a0, 3, 3 }, + [PAD_GPIO22] = { 0x2a0, 6, 3 }, + [PAD_GPIO23] = { 0x2a0, 9, 3 }, + [PAD_GPIO24] = { 0x2a0, 12, 3 }, + [PAD_GPIO25] = { 0x2a0, 15, 3 }, + [PAD_GPIO26] = { 0x2a0, 18, 3 }, + [PAD_GPIO27] = { 0x2a0, 21, 3 }, + [PAD_GPIO28] = { 0x2a0, 24, 3 }, + [PAD_GPIO29] = { 0x2a0, 27, 3 }, + + [PAD_GPIO30] = { 0x2a4, 0, 3 }, + [PAD_GPIO31] = { 0x2a4, 3, 3 }, + [PAD_GPIO32] = { 0x2a4, 6, 3 }, + [PAD_GPIO33] = { 0x2a4, 9, 3 }, + [PAD_GPIO34] = { 0x2a4, 12, 3 }, + [PAD_GPIO35] = { 0x2a4, 15, 3 }, + [PAD_GPIO36] = { 0x2a4, 17, 3 }, + [PAD_GPIO37] = { 0x2a4, 20, 3 }, + [PAD_GPIO38] = { 0x2a4, 23, 3 }, + [PAD_GPIO39] = { 0x2a4, 26, 3 }, + [PAD_GPIO40] = { 0x2a4, 29, 3 }, + + [PAD_GPIO41] = { 0x2a8, 0, 3 }, + [PAD_GPIO42] = { 0x2a8, 3, 3 }, + [PAD_GPIO43] = { 0x2a8, 6, 3 }, + [PAD_GPIO44] = { 0x2a8, 9, 3 }, + [PAD_GPIO45] = { 0x2a8, 12, 3 }, + [PAD_GPIO46] = { 0x2a8, 15, 3 }, + [PAD_GPIO47] = { 0x2a8, 18, 3 }, + [PAD_GPIO48] = { 0x2a8, 21, 3 }, + [PAD_GPIO49] = { 0x2a8, 24, 3 }, + [PAD_GPIO50] = { 0x2a8, 27, 3 }, + [PAD_GPIO51] = { 0x2a8, 30, 3 }, + + [PAD_GPIO52] = { 0x2ac, 0, 3 }, + [PAD_GPIO53] = { 0x2ac, 2, 3 }, + [PAD_GPIO54] = { 0x2ac, 4, 3 }, + [PAD_GPIO55] = { 0x2ac, 6, 3 }, + [PAD_GPIO56] = { 0x2ac, 9, 3 }, + [PAD_GPIO57] = { 0x2ac, 12, 3 }, + [PAD_GPIO58] = { 0x2ac, 15, 3 }, + [PAD_GPIO59] = { 0x2ac, 18, 3 }, + [PAD_GPIO60] = { 0x2ac, 21, 3 }, + [PAD_GPIO61] = { 0x2ac, 24, 3 }, + [PAD_GPIO62] = { 0x2ac, 27, 3 }, + [PAD_GPIO63] = { 0x2ac, 30, 3 }, + + [PAD_GPIO6] = { 0x2b0, 0, 3 }, + [PAD_GPIO7] = { 0x2b0, 2, 3 }, + [PAD_GPIO8] = { 0x2b0, 5, 3 }, + [PAD_GPIO9] = { 0x2b0, 8, 3 }, +}; + +struct jh7110_vin_group_sel { + u16 offset; + u8 shift; + u8 group; +}; + +static const struct jh7110_vin_group_sel + jh7110_sys_vin_group_sel[ARRAY_SIZE(jh7110_sys_pins)] = { + [PAD_GPIO6] = { 0x2b4, 21, 0 }, + [PAD_GPIO7] = { 0x2b4, 18, 0 }, + [PAD_GPIO8] = { 0x2b4, 15, 0 }, + [PAD_GPIO9] = { 0x2b0, 11, 0 }, + [PAD_GPIO10] = { 0x2b0, 20, 0 }, + [PAD_GPIO11] = { 0x2b0, 23, 0 }, + [PAD_GPIO12] = { 0x2b0, 26, 0 }, + [PAD_GPIO13] = { 0x2b0, 29, 0 }, + [PAD_GPIO14] = { 0x2b4, 0, 0 }, + [PAD_GPIO15] = { 0x2b4, 3, 0 }, + [PAD_GPIO16] = { 0x2b4, 6, 0 }, + [PAD_GPIO17] = { 0x2b4, 9, 0 }, + [PAD_GPIO18] = { 0x2b4, 12, 0 }, + [PAD_GPIO19] = { 0x2b0, 14, 0 }, + [PAD_GPIO20] = { 0x2b0, 17, 0 }, + + [PAD_GPIO21] = { 0x2b4, 21, 1 }, + [PAD_GPIO22] = { 0x2b4, 18, 1 }, + [PAD_GPIO23] = { 0x2b4, 15, 1 }, + [PAD_GPIO24] = { 0x2b0, 11, 1 }, + [PAD_GPIO25] = { 0x2b0, 20, 1 }, + [PAD_GPIO26] = { 0x2b0, 23, 1 }, + [PAD_GPIO27] = { 0x2b0, 26, 1 }, + [PAD_GPIO28] = { 0x2b0, 29, 1 }, + [PAD_GPIO29] = { 0x2b4, 0, 1 }, + [PAD_GPIO30] = { 0x2b4, 3, 1 }, + [PAD_GPIO31] = { 0x2b4, 6, 1 }, + [PAD_GPIO32] = { 0x2b4, 9, 1 }, + [PAD_GPIO33] = { 0x2b4, 12, 1 }, + [PAD_GPIO34] = { 0x2b0, 14, 1 }, + [PAD_GPIO35] = { 0x2b0, 17, 1 }, + + [PAD_GPIO36] = { 0x2b4, 21, 2 }, + [PAD_GPIO37] = { 0x2b4, 18, 2 }, + [PAD_GPIO38] = { 0x2b4, 15, 2 }, + [PAD_GPIO39] = { 0x2b0, 11, 2 }, + [PAD_GPIO40] = { 0x2b0, 20, 2 }, + [PAD_GPIO41] = { 0x2b0, 23, 2 }, + [PAD_GPIO42] = { 0x2b0, 26, 2 }, + [PAD_GPIO43] = { 0x2b0, 29, 2 }, + [PAD_GPIO44] = { 0x2b4, 0, 2 }, + [PAD_GPIO45] = { 0x2b4, 3, 2 }, + [PAD_GPIO46] = { 0x2b4, 6, 2 }, + [PAD_GPIO47] = { 0x2b4, 9, 2 }, + [PAD_GPIO48] = { 0x2b4, 12, 2 }, + [PAD_GPIO49] = { 0x2b0, 14, 2 }, + [PAD_GPIO50] = { 0x2b0, 17, 2 }, +}; + +static void jh7110_set_function(struct jh7110_pinctrl *sfp, + unsigned int pin, u32 func) +{ + const struct jh7110_func_sel *fs = &jh7110_sys_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 void jh7110_set_vin_group(struct jh7110_pinctrl *sfp, + unsigned int pin) +{ + const struct jh7110_vin_group_sel *gs = &jh7110_sys_vin_group_sel[pin]; + unsigned long flags; + void __iomem *reg; + u32 mask; + u32 grp; + + if (!gs->offset) + return; + + reg = sfp->base + gs->offset; + grp = gs->group << gs->shift; + mask = 0x3U << gs->shift; + + raw_spin_lock_irqsave(&sfp->lock, flags); + grp |= readl_relaxed(reg) & ~mask; + writel_relaxed(grp, reg); + raw_spin_unlock_irqrestore(&sfp->lock, flags); +} + +static int jh7110_sys_set_one_pin_mux(struct jh7110_pinctrl *sfp, + unsigned int pin, + unsigned int din, u32 dout, + u32 doen, u32 func) +{ + if (pin < sfp->gc.ngpio && func == 0) + jh7110_set_gpiomux(sfp, pin, din, dout, doen); + + jh7110_set_function(sfp, pin, func); + + if (pin < sfp->gc.ngpio && func == 2) + jh7110_set_vin_group(sfp, pin); + + return 0; +} + +static int jh7110_sys_get_padcfg_base(struct jh7110_pinctrl *sfp, + unsigned int pin) +{ + if (pin < PAD_GMAC1_MDC) + return JH7110_SYS_GPO_PDA_0_74_CFG; + else if (pin > PAD_GMAC1_TXC && pin <= PAD_QSPI_DATA3) + return JH7110_SYS_GPO_PDA_89_94_CFG; + else + return -1; +} + +static void jh7110_sys_irq_handler(struct irq_desc *desc) +{ + struct jh7110_pinctrl *sfp = jh7110_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 + JH7110_SYS_GPIOMIS0); + for_each_set_bit(pin, &mis, 32) + generic_handle_domain_irq(sfp->gc.irq.domain, pin); + + mis = readl_relaxed(sfp->base + JH7110_SYS_GPIOMIS1); + for_each_set_bit(pin, &mis, 32) + generic_handle_domain_irq(sfp->gc.irq.domain, pin + 32); + + chained_irq_exit(chip, desc); +} + +static int jh7110_sys_init_hw(struct gpio_chip *gc) +{ + struct jh7110_pinctrl *sfp = container_of(gc, + struct jh7110_pinctrl, gc); + + /* mask all GPIO interrupts */ + writel(0U, sfp->base + JH7110_SYS_GPIOIE0); + writel(0U, sfp->base + JH7110_SYS_GPIOIE1); + /* clear edge interrupt flags */ + writel(~0U, sfp->base + JH7110_SYS_GPIOIC0); + writel(~0U, sfp->base + JH7110_SYS_GPIOIC1); + /* enable GPIO interrupts */ + writel(1U, sfp->base + JH7110_SYS_GPIOEN); + return 0; +} + +static const struct jh7110_gpio_irq_reg jh7110_sys_irq_reg = { + .is_reg_base = JH7110_SYS_GPIOIS0, + .ic_reg_base = JH7110_SYS_GPIOIC0, + .ibe_reg_base = JH7110_SYS_GPIOIBE0, + .iev_reg_base = JH7110_SYS_GPIOIEV0, + .ie_reg_base = JH7110_SYS_GPIOIE0, + .ris_reg_base = JH7110_SYS_GPIORIS0, + .mis_reg_base = JH7110_SYS_GPIOMIS0, +}; + +static const struct jh7110_pinctrl_soc_info jh7110_sys_pinctrl_info = { + .pins = jh7110_sys_pins, + .npins = ARRAY_SIZE(jh7110_sys_pins), + .ngpios = JH7110_SYS_NGPIO, + .gc_base = JH7110_SYS_GC_BASE, + .dout_reg_base = JH7110_SYS_DOUT, + .dout_mask = GENMASK(6, 0), + .doen_reg_base = JH7110_SYS_DOEN, + .doen_mask = GENMASK(5, 0), + .gpi_reg_base = JH7110_SYS_GPI, + .gpi_mask = GENMASK(6, 0), + .gpioin_reg_base = JH7110_SYS_GPIOIN, + .irq_reg = &jh7110_sys_irq_reg, + .jh7110_set_one_pin_mux = jh7110_sys_set_one_pin_mux, + .jh7110_get_padcfg_base = jh7110_sys_get_padcfg_base, + .jh7110_gpio_irq_handler = jh7110_sys_irq_handler, + .jh7110_gpio_init_hw = jh7110_sys_init_hw, +}; + +static const struct of_device_id jh7110_sys_pinctrl_of_match[] = { + { + .compatible = "starfive,jh7110-sys-pinctrl", + .data = &jh7110_sys_pinctrl_info, + }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, jh7110_sys_pinctrl_of_match); + +static struct platform_driver jh7110_sys_pinctrl_driver = { + .probe = jh7110_pinctrl_probe, + .driver = { + .name = "starfive-jh7110-sys-pinctrl", + .of_match_table = jh7110_sys_pinctrl_of_match, + }, +}; +module_platform_driver(jh7110_sys_pinctrl_driver); + +MODULE_DESCRIPTION("Pinctrl driver for the StarFive JH7110 SoC sys controller"); +MODULE_AUTHOR("Emil Renner Berthing <kernel@esmil.dk>"); +MODULE_AUTHOR("Jianlong Huang <jianlong.huang@starfivetech.com>"); +MODULE_LICENSE("GPL"); diff --git a/drivers/pinctrl/starfive/pinctrl-starfive-jh7110.c b/drivers/pinctrl/starfive/pinctrl-starfive-jh7110.c new file mode 100644 index 000000000000..5fe729b4a03d --- /dev/null +++ b/drivers/pinctrl/starfive/pinctrl-starfive-jh7110.c @@ -0,0 +1,982 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Pinctrl / GPIO driver for StarFive JH7110 SoC + * + * Copyright (C) 2022 Emil Renner Berthing <kernel@esmil.dk> + * Copyright (C) 2022 StarFive Technology Co., Ltd. + */ + +#include <linux/bits.h> +#include <linux/clk.h> +#include <linux/gpio/driver.h> +#include <linux/io.h> +#include <linux/mod_devicetable.h> +#include <linux/module.h> +#include <linux/mutex.h> +#include <linux/of.h> +#include <linux/of_device.h> +#include <linux/platform_device.h> +#include <linux/reset.h> +#include <linux/seq_file.h> +#include <linux/spinlock.h> + +#include <linux/pinctrl/consumer.h> +#include <linux/pinctrl/pinconf.h> +#include <linux/pinctrl/pinctrl.h> +#include <linux/pinctrl/pinmux.h> + +#include <dt-bindings/pinctrl/starfive,jh7110-pinctrl.h> + +#include "../core.h" +#include "../pinctrl-utils.h" +#include "../pinmux.h" +#include "../pinconf.h" +#include "pinctrl-starfive-jh7110.h" + +/* pad control bits */ +#define JH7110_PADCFG_POS BIT(7) +#define JH7110_PADCFG_SMT BIT(6) +#define JH7110_PADCFG_SLEW BIT(5) +#define JH7110_PADCFG_PD BIT(4) +#define JH7110_PADCFG_PU BIT(3) +#define JH7110_PADCFG_BIAS (JH7110_PADCFG_PD | JH7110_PADCFG_PU) +#define JH7110_PADCFG_DS_MASK GENMASK(2, 1) +#define JH7110_PADCFG_DS_2MA (0U << 1) +#define JH7110_PADCFG_DS_4MA BIT(1) +#define JH7110_PADCFG_DS_8MA (2U << 1) +#define JH7110_PADCFG_DS_12MA (3U << 1) +#define JH7110_PADCFG_IE BIT(0) + +/* + * The packed pinmux values from the device tree look like this: + * + * | 31 - 24 | 23 - 16 | 15 - 10 | 9 - 8 | 7 - 0 | + * | din | dout | doen | function | pin | + */ +static unsigned int jh7110_pinmux_din(u32 v) +{ + return (v & GENMASK(31, 24)) >> 24; +} + +static u32 jh7110_pinmux_dout(u32 v) +{ + return (v & GENMASK(23, 16)) >> 16; +} + +static u32 jh7110_pinmux_doen(u32 v) +{ + return (v & GENMASK(15, 10)) >> 10; +} + +static u32 jh7110_pinmux_function(u32 v) +{ + return (v & GENMASK(9, 8)) >> 8; +} + +static unsigned int jh7110_pinmux_pin(u32 v) +{ + return v & GENMASK(7, 0); +} + +static struct jh7110_pinctrl *jh7110_from_irq_data(struct irq_data *d) +{ + struct gpio_chip *gc = irq_data_get_irq_chip_data(d); + + return container_of(gc, struct jh7110_pinctrl, gc); +} + +struct jh7110_pinctrl *jh7110_from_irq_desc(struct irq_desc *desc) +{ + struct gpio_chip *gc = irq_desc_get_handler_data(desc); + + return container_of(gc, struct jh7110_pinctrl, gc); +} +EXPORT_SYMBOL_GPL(jh7110_from_irq_desc); + +#ifdef CONFIG_DEBUG_FS +static void jh7110_pin_dbg_show(struct pinctrl_dev *pctldev, + struct seq_file *s, unsigned int pin) +{ + struct jh7110_pinctrl *sfp = pinctrl_dev_get_drvdata(pctldev); + const struct jh7110_pinctrl_soc_info *info = sfp->info; + + seq_printf(s, "%s", dev_name(pctldev->dev)); + + if (pin < sfp->gc.ngpio) { + unsigned int offset = 4 * (pin / 4); + unsigned int shift = 8 * (pin % 4); + u32 dout = readl_relaxed(sfp->base + info->dout_reg_base + offset); + u32 doen = readl_relaxed(sfp->base + info->doen_reg_base + offset); + u32 gpi = readl_relaxed(sfp->base + info->gpi_reg_base + offset); + + dout = (dout >> shift) & info->dout_mask; + doen = (doen >> shift) & info->doen_mask; + gpi = ((gpi >> shift) - 2) & info->gpi_mask; + + seq_printf(s, " dout=%u doen=%u din=%u", dout, doen, gpi); + } +} +#else +#define jh7110_pin_dbg_show NULL +#endif + +static int jh7110_dt_node_to_map(struct pinctrl_dev *pctldev, + struct device_node *np, + struct pinctrl_map **maps, + unsigned int *num_maps) +{ + struct jh7110_pinctrl *sfp = pinctrl_dev_get_drvdata(pctldev); + struct device *dev = sfp->gc.parent; + struct device_node *child; + struct pinctrl_map *map; + const char **pgnames; + const char *grpname; + int ngroups; + int nmaps; + int ret; + + ngroups = 0; + for_each_child_of_node(np, child) + ngroups += 1; + nmaps = 2 * ngroups; + + pgnames = devm_kcalloc(dev, ngroups, sizeof(*pgnames), GFP_KERNEL); + if (!pgnames) + return -ENOMEM; + + map = kcalloc(nmaps, sizeof(*map), GFP_KERNEL); + if (!map) + return -ENOMEM; + + nmaps = 0; + ngroups = 0; + mutex_lock(&sfp->mutex); + for_each_child_of_node(np, child) { + int npins = of_property_count_u32_elems(child, "pinmux"); + int *pins; + u32 *pinmux; + int i; + + if (npins < 1) { + dev_err(dev, + "invalid pinctrl group %pOFn.%pOFn: pinmux not set\n", + np, child); + ret = -EINVAL; + goto put_child; + } + + grpname = devm_kasprintf(dev, GFP_KERNEL, "%pOFn.%pOFn", np, child); + if (!grpname) { + ret = -ENOMEM; + goto put_child; + } + + pgnames[ngroups++] = grpname; + + pins = devm_kcalloc(dev, npins, sizeof(*pins), GFP_KERNEL); + if (!pins) { + ret = -ENOMEM; + goto put_child; + } + + pinmux = devm_kcalloc(dev, npins, sizeof(*pinmux), GFP_KERNEL); + if (!pinmux) { + ret = -ENOMEM; + goto put_child; + } + + ret = of_property_read_u32_array(child, "pinmux", pinmux, npins); + if (ret) + goto put_child; + + for (i = 0; i < npins; i++) + pins[i] = jh7110_pinmux_pin(pinmux[i]); + + map[nmaps].type = PIN_MAP_TYPE_MUX_GROUP; + map[nmaps].data.mux.function = np->name; + map[nmaps].data.mux.group = grpname; + nmaps += 1; + + ret = pinctrl_generic_add_group(pctldev, grpname, + pins, npins, pinmux); + if (ret < 0) { + dev_err(dev, "error adding group %s: %d\n", grpname, ret); + goto put_child; + } + + ret = pinconf_generic_parse_dt_config(child, pctldev, + &map[nmaps].data.configs.configs, + &map[nmaps].data.configs.num_configs); + if (ret) { + dev_err(dev, "error parsing pin config of group %s: %d\n", + grpname, ret); + goto put_child; + } + + /* don't create a map if there are no pinconf settings */ + if (map[nmaps].data.configs.num_configs == 0) + continue; + + map[nmaps].type = PIN_MAP_TYPE_CONFIGS_GROUP; + map[nmaps].data.configs.group_or_pin = grpname; + nmaps += 1; + } + + ret = pinmux_generic_add_function(pctldev, np->name, + pgnames, ngroups, NULL); + if (ret < 0) { + dev_err(dev, "error adding function %s: %d\n", np->name, ret); + goto free_map; + } + mutex_unlock(&sfp->mutex); + + *maps = map; + *num_maps = nmaps; + return 0; + +put_child: + of_node_put(child); +free_map: + pinctrl_utils_free_map(pctldev, map, nmaps); + mutex_unlock(&sfp->mutex); + return ret; +} + +static const struct pinctrl_ops jh7110_pinctrl_ops = { + .get_groups_count = pinctrl_generic_get_group_count, + .get_group_name = pinctrl_generic_get_group_name, + .get_group_pins = pinctrl_generic_get_group_pins, + .pin_dbg_show = jh7110_pin_dbg_show, + .dt_node_to_map = jh7110_dt_node_to_map, + .dt_free_map = pinctrl_utils_free_map, +}; + +void jh7110_set_gpiomux(struct jh7110_pinctrl *sfp, unsigned int pin, + unsigned int din, u32 dout, u32 doen) +{ + const struct jh7110_pinctrl_soc_info *info = sfp->info; + + unsigned int offset = 4 * (pin / 4); + unsigned int shift = 8 * (pin % 4); + u32 dout_mask = info->dout_mask << shift; + u32 done_mask = info->doen_mask << shift; + u32 ival, imask; + void __iomem *reg_dout; + void __iomem *reg_doen; + void __iomem *reg_din; + unsigned long flags; + + reg_dout = sfp->base + info->dout_reg_base + offset; + reg_doen = sfp->base + info->doen_reg_base + offset; + dout <<= shift; + doen <<= shift; + if (din != GPI_NONE) { + unsigned int ioffset = 4 * (din / 4); + unsigned int ishift = 8 * (din % 4); + + reg_din = sfp->base + info->gpi_reg_base + ioffset; + ival = (pin + 2) << ishift; + imask = info->gpi_mask << ishift; + } else { + reg_din = NULL; + } + + raw_spin_lock_irqsave(&sfp->lock, flags); + dout |= readl_relaxed(reg_dout) & ~dout_mask; + writel_relaxed(dout, reg_dout); + doen |= readl_relaxed(reg_doen) & ~done_mask; + writel_relaxed(doen, reg_doen); + if (reg_din) { + ival |= readl_relaxed(reg_din) & ~imask; + writel_relaxed(ival, reg_din); + } + raw_spin_unlock_irqrestore(&sfp->lock, flags); +} +EXPORT_SYMBOL_GPL(jh7110_set_gpiomux); + +static int jh7110_set_mux(struct pinctrl_dev *pctldev, + unsigned int fsel, unsigned int gsel) +{ + struct jh7110_pinctrl *sfp = pinctrl_dev_get_drvdata(pctldev); + const struct jh7110_pinctrl_soc_info *info = sfp->info; + const struct group_desc *group; + const u32 *pinmux; + unsigned int i; + + group = pinctrl_generic_get_group(pctldev, gsel); + if (!group) + return -EINVAL; + + pinmux = group->data; + for (i = 0; i < group->num_pins; i++) { + u32 v = pinmux[i]; + + if (info->jh7110_set_one_pin_mux) + info->jh7110_set_one_pin_mux(sfp, + jh7110_pinmux_pin(v), + jh7110_pinmux_din(v), + jh7110_pinmux_dout(v), + jh7110_pinmux_doen(v), + jh7110_pinmux_function(v)); + } + + return 0; +} + +static const struct pinmux_ops jh7110_pinmux_ops = { + .get_functions_count = pinmux_generic_get_function_count, + .get_function_name = pinmux_generic_get_function_name, + .get_function_groups = pinmux_generic_get_function_groups, + .set_mux = jh7110_set_mux, + .strict = true, +}; + +static const u8 jh7110_drive_strength_mA[4] = { 2, 4, 8, 12 }; + +static u32 jh7110_padcfg_ds_to_mA(u32 padcfg) +{ + return jh7110_drive_strength_mA[(padcfg >> 1) & 3U]; +} + +static u32 jh7110_padcfg_ds_from_mA(u32 v) +{ + int i; + + for (i = 0; i < 3; i++) { + if (v <= jh7110_drive_strength_mA[i]) + break; + } + return i << 1; +} + +static void jh7110_padcfg_rmw(struct jh7110_pinctrl *sfp, + unsigned int pin, u32 mask, u32 value) +{ + const struct jh7110_pinctrl_soc_info *info = sfp->info; + void __iomem *reg; + unsigned long flags; + int padcfg_base; + + if (!info->jh7110_get_padcfg_base) + return; + + padcfg_base = info->jh7110_get_padcfg_base(sfp, pin); + if (padcfg_base < 0) + return; + + reg = sfp->base + padcfg_base + 4 * pin; + value &= mask; + + raw_spin_lock_irqsave(&sfp->lock, flags); + value |= readl_relaxed(reg) & ~mask; + writel_relaxed(value, reg); + raw_spin_unlock_irqrestore(&sfp->lock, flags); +} + +static int jh7110_pinconf_get(struct pinctrl_dev *pctldev, + unsigned int pin, unsigned long *config) +{ + struct jh7110_pinctrl *sfp = pinctrl_dev_get_drvdata(pctldev); + const struct jh7110_pinctrl_soc_info *info = sfp->info; + int param = pinconf_to_config_param(*config); + u32 padcfg, arg; + bool enabled; + int padcfg_base; + + if (!info->jh7110_get_padcfg_base) + return 0; + + padcfg_base = info->jh7110_get_padcfg_base(sfp, pin); + if (padcfg_base < 0) + return 0; + + padcfg = readl_relaxed(sfp->base + padcfg_base + 4 * pin); + switch (param) { + case PIN_CONFIG_BIAS_DISABLE: + enabled = !(padcfg & JH7110_PADCFG_BIAS); + arg = 0; + break; + case PIN_CONFIG_BIAS_PULL_DOWN: + enabled = padcfg & JH7110_PADCFG_PD; + arg = 1; + break; + case PIN_CONFIG_BIAS_PULL_UP: + enabled = padcfg & JH7110_PADCFG_PU; + arg = 1; + break; + case PIN_CONFIG_DRIVE_STRENGTH: + enabled = true; + arg = jh7110_padcfg_ds_to_mA(padcfg); + break; + case PIN_CONFIG_INPUT_ENABLE: + enabled = padcfg & JH7110_PADCFG_IE; + arg = enabled; + break; + case PIN_CONFIG_INPUT_SCHMITT_ENABLE: + enabled = padcfg & JH7110_PADCFG_SMT; + arg = enabled; + break; + case PIN_CONFIG_SLEW_RATE: + enabled = true; + arg = !!(padcfg & JH7110_PADCFG_SLEW); + break; + default: + return -ENOTSUPP; + } + + *config = pinconf_to_config_packed(param, arg); + return enabled ? 0 : -EINVAL; +} + +static int jh7110_pinconf_group_get(struct pinctrl_dev *pctldev, + unsigned int gsel, + unsigned long *config) +{ + const struct group_desc *group; + + group = pinctrl_generic_get_group(pctldev, gsel); + if (!group) + return -EINVAL; + + return jh7110_pinconf_get(pctldev, group->pins[0], config); +} + +static int jh7110_pinconf_group_set(struct pinctrl_dev *pctldev, + unsigned int gsel, + unsigned long *configs, + unsigned int num_configs) +{ + struct jh7110_pinctrl *sfp = pinctrl_dev_get_drvdata(pctldev); + const struct group_desc *group; + u16 mask, value; + int i; + + group = pinctrl_generic_get_group(pctldev, gsel); + if (!group) + return -EINVAL; + + mask = 0; + value = 0; + for (i = 0; i < num_configs; i++) { + int param = pinconf_to_config_param(configs[i]); + u32 arg = pinconf_to_config_argument(configs[i]); + + switch (param) { + case PIN_CONFIG_BIAS_DISABLE: + mask |= JH7110_PADCFG_BIAS; + value &= ~JH7110_PADCFG_BIAS; + break; + case PIN_CONFIG_BIAS_PULL_DOWN: + if (arg == 0) + return -ENOTSUPP; + mask |= JH7110_PADCFG_BIAS; + value = (value & ~JH7110_PADCFG_BIAS) | JH7110_PADCFG_PD; + break; + case PIN_CONFIG_BIAS_PULL_UP: + if (arg == 0) + return -ENOTSUPP; + mask |= JH7110_PADCFG_BIAS; + value = (value & ~JH7110_PADCFG_BIAS) | JH7110_PADCFG_PU; + break; + case PIN_CONFIG_DRIVE_STRENGTH: + mask |= JH7110_PADCFG_DS_MASK; + value = (value & ~JH7110_PADCFG_DS_MASK) | + jh7110_padcfg_ds_from_mA(arg); + break; + case PIN_CONFIG_INPUT_ENABLE: + mask |= JH7110_PADCFG_IE; + if (arg) + value |= JH7110_PADCFG_IE; + else + value &= ~JH7110_PADCFG_IE; + break; + case PIN_CONFIG_INPUT_SCHMITT_ENABLE: + mask |= JH7110_PADCFG_SMT; + if (arg) + value |= JH7110_PADCFG_SMT; + else + value &= ~JH7110_PADCFG_SMT; + break; + case PIN_CONFIG_SLEW_RATE: + mask |= JH7110_PADCFG_SLEW; + if (arg) + value |= JH7110_PADCFG_SLEW; + else + value &= ~JH7110_PADCFG_SLEW; + break; + default: + return -ENOTSUPP; + } + } + + for (i = 0; i < group->num_pins; i++) + jh7110_padcfg_rmw(sfp, group->pins[i], mask, value); + + return 0; +} + +#ifdef CONFIG_DEBUG_FS +static void jh7110_pinconf |