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linux/drivers/pinctrl/starfive/pinctrl-starfive-jh7110-sys.c
Hal Feng 64061b6733 pinctrl: starfive: jh7110: Add system pm ops to save and restore context 
Add system pm ops to save and restore pinctrl registers
when suspending and resuming the driver, respectively.

Signed-off-by: Hal Feng <hal.feng@starfivetech.com>
Link: https://lore.kernel.org/r/20230905122105.117000-3-hal.feng@starfivetech.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2023-09-12 10:09:40 +02:00

452 lines
14 KiB
C
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// 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/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
#define JH7110_SYS_REGS_NUM 174
/* 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,
.nsaved_regs = JH7110_SYS_REGS_NUM,
.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,
.pm = pm_sleep_ptr(&jh7110_pinctrl_pm_ops),
},
};
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");
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