^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright (C) 2012 ARM Limited
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/gpio/driver.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/mfd/core.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/of_platform.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/platform_data/syscon.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/stat.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #define SYS_ID 0x000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #define SYS_SW 0x004
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define SYS_LED 0x008
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define SYS_100HZ 0x024
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define SYS_FLAGSSET 0x030
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define SYS_FLAGSCLR 0x034
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define SYS_NVFLAGS 0x038
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define SYS_NVFLAGSSET 0x038
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define SYS_NVFLAGSCLR 0x03c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #define SYS_MCI 0x048
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #define SYS_FLASH 0x04c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #define SYS_CFGSW 0x058
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #define SYS_24MHZ 0x05c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define SYS_MISC 0x060
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define SYS_DMA 0x064
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define SYS_PROCID0 0x084
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #define SYS_PROCID1 0x088
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define SYS_CFGDATA 0x0a0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define SYS_CFGCTRL 0x0a4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #define SYS_CFGSTAT 0x0a8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) /* The sysreg block is just a random collection of various functions... */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) static struct bgpio_pdata vexpress_sysreg_sys_led_pdata = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) .label = "sys_led",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) .base = -1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) .ngpio = 8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) static struct bgpio_pdata vexpress_sysreg_sys_mci_pdata = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) .label = "sys_mci",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) .base = -1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) .ngpio = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) static struct bgpio_pdata vexpress_sysreg_sys_flash_pdata = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) .label = "sys_flash",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) .base = -1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) .ngpio = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) static struct mfd_cell vexpress_sysreg_cells[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) .name = "basic-mmio-gpio",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) .of_compatible = "arm,vexpress-sysreg,sys_led",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) .num_resources = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) .resources = (struct resource []) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) DEFINE_RES_MEM_NAMED(SYS_LED, 0x4, "dat"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) .platform_data = &vexpress_sysreg_sys_led_pdata,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) .pdata_size = sizeof(vexpress_sysreg_sys_led_pdata),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) }, {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) .name = "basic-mmio-gpio",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) .of_compatible = "arm,vexpress-sysreg,sys_mci",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) .num_resources = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) .resources = (struct resource []) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) DEFINE_RES_MEM_NAMED(SYS_MCI, 0x4, "dat"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) .platform_data = &vexpress_sysreg_sys_mci_pdata,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) .pdata_size = sizeof(vexpress_sysreg_sys_mci_pdata),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) }, {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) .name = "basic-mmio-gpio",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) .of_compatible = "arm,vexpress-sysreg,sys_flash",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) .num_resources = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) .resources = (struct resource []) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) DEFINE_RES_MEM_NAMED(SYS_FLASH, 0x4, "dat"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) .platform_data = &vexpress_sysreg_sys_flash_pdata,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) .pdata_size = sizeof(vexpress_sysreg_sys_flash_pdata),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) }, {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) .name = "vexpress-syscfg",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) .num_resources = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) .resources = (struct resource []) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) DEFINE_RES_MEM(SYS_MISC, 0x4c),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) static int vexpress_sysreg_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) struct resource *mem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) void __iomem *base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) struct gpio_chip *mmc_gpio_chip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) if (!mem)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) base = devm_ioremap(&pdev->dev, mem->start, resource_size(mem));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) if (!base)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) * Duplicated SYS_MCI pseudo-GPIO controller for compatibility with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) * older trees using sysreg node for MMC control lines.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) mmc_gpio_chip = devm_kzalloc(&pdev->dev, sizeof(*mmc_gpio_chip),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) if (!mmc_gpio_chip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) bgpio_init(mmc_gpio_chip, &pdev->dev, 0x4, base + SYS_MCI,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) NULL, NULL, NULL, NULL, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) mmc_gpio_chip->ngpio = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) devm_gpiochip_add_data(&pdev->dev, mmc_gpio_chip, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) return devm_mfd_add_devices(&pdev->dev, PLATFORM_DEVID_AUTO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) vexpress_sysreg_cells,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) ARRAY_SIZE(vexpress_sysreg_cells), mem, 0, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) static const struct of_device_id vexpress_sysreg_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) { .compatible = "arm,vexpress-sysreg", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) {},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) MODULE_DEVICE_TABLE(of, vexpress_sysreg_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) static struct platform_driver vexpress_sysreg_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) .name = "vexpress-sysreg",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) .of_match_table = vexpress_sysreg_match,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) .probe = vexpress_sysreg_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) module_platform_driver(vexpress_sysreg_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) MODULE_LICENSE("GPL v2");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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