^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) /* riowd.c - driver for hw watchdog inside Super I/O of RIO
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright (C) 2001, 2008 David S. Miller (davem@davemloft.net)
^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) #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/miscdevice.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/watchdog.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/of_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) /* RIO uses the NatSemi Super I/O power management logical device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) * as its' watchdog.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) * When the watchdog triggers, it asserts a line to the BBC (Boot Bus
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * Controller) of the machine. The BBC can only be configured to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * trigger a power-on reset when the signal is asserted. The BBC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * can be configured to ignore the signal entirely as well.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * The only Super I/O device register we care about is at index
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * 0x05 (WDTO_INDEX) which is the watchdog time-out in minutes (1-255).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) * If set to zero, this disables the watchdog. When set, the system
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) * must periodically (before watchdog expires) clear (set to zero) and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) * re-set the watchdog else it will trigger.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) * There are two other indexed watchdog registers inside this Super I/O
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) * logical device, but they are unused. The first, at index 0x06 is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) * the watchdog control and can be used to make the watchdog timer re-set
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) * when the PS/2 mouse or serial lines show activity. The second, at
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) * index 0x07 is merely a sampling of the line from the watchdog to the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) * BBC.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) * The watchdog device generates no interrupts.
^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) MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) MODULE_DESCRIPTION("Hardware watchdog driver for Sun RIO");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) MODULE_SUPPORTED_DEVICE("watchdog");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #define DRIVER_NAME "riowd"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #define PFX DRIVER_NAME ": "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) struct riowd {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) void __iomem *regs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) spinlock_t lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) static struct riowd *riowd_device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) #define WDTO_INDEX 0x05
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) static int riowd_timeout = 1; /* in minutes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) module_param(riowd_timeout, int, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) MODULE_PARM_DESC(riowd_timeout, "Watchdog timeout in minutes");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) static void riowd_writereg(struct riowd *p, u8 val, int index)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) spin_lock_irqsave(&p->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) writeb(index, p->regs + 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) writeb(val, p->regs + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) spin_unlock_irqrestore(&p->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) static int riowd_open(struct inode *inode, struct file *filp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) stream_open(inode, filp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) static int riowd_release(struct inode *inode, struct file *filp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) static long riowd_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) static const struct watchdog_info info = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) .options = WDIOF_SETTIMEOUT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) .firmware_version = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) .identity = DRIVER_NAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) void __user *argp = (void __user *)arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) struct riowd *p = riowd_device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) unsigned int options;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) int new_margin;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) switch (cmd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) case WDIOC_GETSUPPORT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) if (copy_to_user(argp, &info, sizeof(info)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) case WDIOC_GETSTATUS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) case WDIOC_GETBOOTSTATUS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) if (put_user(0, (int __user *)argp))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) case WDIOC_KEEPALIVE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) riowd_writereg(p, riowd_timeout, WDTO_INDEX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) case WDIOC_SETOPTIONS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) if (copy_from_user(&options, argp, sizeof(options)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) if (options & WDIOS_DISABLECARD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) riowd_writereg(p, 0, WDTO_INDEX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) else if (options & WDIOS_ENABLECARD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) riowd_writereg(p, riowd_timeout, WDTO_INDEX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) case WDIOC_SETTIMEOUT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) if (get_user(new_margin, (int __user *)argp))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) if ((new_margin < 60) || (new_margin > (255 * 60)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) riowd_timeout = (new_margin + 59) / 60;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) riowd_writereg(p, riowd_timeout, WDTO_INDEX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) case WDIOC_GETTIMEOUT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) return put_user(riowd_timeout * 60, (int __user *)argp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) static ssize_t riowd_write(struct file *file, const char __user *buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) size_t count, loff_t *ppos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) struct riowd *p = riowd_device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) if (count) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) riowd_writereg(p, riowd_timeout, WDTO_INDEX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) static const struct file_operations riowd_fops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) .llseek = no_llseek,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) .unlocked_ioctl = riowd_ioctl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) .compat_ioctl = compat_ptr_ioctl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) .open = riowd_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) .write = riowd_write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) .release = riowd_release,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) static struct miscdevice riowd_miscdev = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) .minor = WATCHDOG_MINOR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) .name = "watchdog",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) .fops = &riowd_fops
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) static int riowd_probe(struct platform_device *op)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) struct riowd *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) int err = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) if (riowd_device)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) err = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) p = devm_kzalloc(&op->dev, sizeof(*p), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) if (!p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) spin_lock_init(&p->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) p->regs = of_ioremap(&op->resource[0], 0, 2, DRIVER_NAME);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) if (!p->regs) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) pr_err("Cannot map registers\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) /* Make miscdev useable right away */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) riowd_device = p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) err = misc_register(&riowd_miscdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) pr_err("Cannot register watchdog misc device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) goto out_iounmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) pr_info("Hardware watchdog [%i minutes], regs at %p\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) riowd_timeout, p->regs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) platform_set_drvdata(op, p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) out_iounmap:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) riowd_device = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) of_iounmap(&op->resource[0], p->regs, 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) static int riowd_remove(struct platform_device *op)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) struct riowd *p = platform_get_drvdata(op);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) misc_deregister(&riowd_miscdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) of_iounmap(&op->resource[0], p->regs, 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) static const struct of_device_id riowd_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) .name = "pmc",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) {},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) MODULE_DEVICE_TABLE(of, riowd_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) static struct platform_driver riowd_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) .name = DRIVER_NAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) .of_match_table = riowd_match,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) .probe = riowd_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) .remove = riowd_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) module_platform_driver(riowd_driver);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
3 Commits
0 Branches
0 Tags