| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Helge Deller | 1404 | 92.07% | 5 | 31.25% |
| Cyrill V. Gorcunov | 86 | 5.64% | 1 | 6.25% |
| Al Viro | 14 | 0.92% | 1 | 6.25% |
| Matthew Wilcox | 6 | 0.39% | 3 | 18.75% |
| Jiri Slaby | 5 | 0.33% | 1 | 6.25% |
| Geert Uytterhoeven | 4 | 0.26% | 2 | 12.50% |
| Alexey Dobriyan | 3 | 0.20% | 1 | 6.25% |
| Thomas Gleixner | 2 | 0.13% | 1 | 6.25% |
| Uwe Kleine-König | 1 | 0.07% | 1 | 6.25% |
| Total | 1525 | 16 |
// SPDX-License-Identifier: GPL-2.0-only /* * linux/drivers/hil/hilkbd.c * * Copyright (C) 1998 Philip Blundell <philb@gnu.org> * Copyright (C) 1999 Matthew Wilcox <willy@infradead.org> * Copyright (C) 1999-2007 Helge Deller <deller@gmx.de> * * Very basic HP Human Interface Loop (HIL) driver. * This driver handles the keyboard on HP300 (m68k) and on some * HP700 (parisc) series machines. */ #include <linux/pci_ids.h> #include <linux/ioport.h> #include <linux/module.h> #include <linux/errno.h> #include <linux/input.h> #include <linux/init.h> #include <linux/interrupt.h> #include <linux/hil.h> #include <linux/io.h> #include <linux/sched.h> #include <linux/spinlock.h> #include <asm/irq.h> #ifdef CONFIG_HP300 #include <asm/hwtest.h> #endif MODULE_AUTHOR("Philip Blundell, Matthew Wilcox, Helge Deller"); MODULE_DESCRIPTION("HIL keyboard driver (basic functionality)"); MODULE_LICENSE("GPL v2"); #if defined(CONFIG_PARISC) #include <asm/io.h> #include <asm/hardware.h> #include <asm/parisc-device.h> static unsigned long hil_base; /* HPA for the HIL device */ static unsigned int hil_irq; #define HILBASE hil_base /* HPPA (parisc) port address */ #define HIL_DATA 0x800 #define HIL_CMD 0x801 #define HIL_IRQ hil_irq #define hil_readb(p) gsc_readb(p) #define hil_writeb(v,p) gsc_writeb((v),(p)) #elif defined(CONFIG_HP300) #define HILBASE 0xf0428000UL /* HP300 (m68k) port address */ #define HIL_DATA 0x1 #define HIL_CMD 0x3 #define HIL_IRQ 2 #define hil_readb(p) readb((const volatile void __iomem *)(p)) #define hil_writeb(v, p) writeb((v), (volatile void __iomem *)(p)) #else #error "HIL is not supported on this platform" #endif /* HIL helper functions */ #define hil_busy() (hil_readb(HILBASE + HIL_CMD) & HIL_BUSY) #define hil_data_available() (hil_readb(HILBASE + HIL_CMD) & HIL_DATA_RDY) #define hil_status() (hil_readb(HILBASE + HIL_CMD)) #define hil_command(x) do { hil_writeb((x), HILBASE + HIL_CMD); } while (0) #define hil_read_data() (hil_readb(HILBASE + HIL_DATA)) #define hil_write_data(x) do { hil_writeb((x), HILBASE + HIL_DATA); } while (0) /* HIL constants */ #define HIL_BUSY 0x02 #define HIL_DATA_RDY 0x01 #define HIL_SETARD 0xA0 /* set auto-repeat delay */ #define HIL_SETARR 0xA2 /* set auto-repeat rate */ #define HIL_SETTONE 0xA3 /* set tone generator */ #define HIL_CNMT 0xB2 /* clear nmi */ #define HIL_INTON 0x5C /* Turn on interrupts. */ #define HIL_INTOFF 0x5D /* Turn off interrupts. */ #define HIL_READKBDSADR 0xF9 #define HIL_WRITEKBDSADR 0xE9 static unsigned int hphilkeyb_keycode[HIL_KEYCODES_SET1_TBLSIZE] __read_mostly = { HIL_KEYCODES_SET1 }; /* HIL structure */ static struct { struct input_dev *dev; unsigned int curdev; unsigned char s; unsigned char c; int valid; unsigned char data[16]; unsigned int ptr; spinlock_t lock; void *dev_id; /* native bus device */ } hil_dev; static void poll_finished(void) { int down; int key; unsigned char scode; switch (hil_dev.data[0]) { case 0x40: down = (hil_dev.data[1] & 1) == 0; scode = hil_dev.data[1] >> 1; key = hphilkeyb_keycode[scode]; input_report_key(hil_dev.dev, key, down); break; } hil_dev.curdev = 0; } static inline void handle_status(unsigned char s, unsigned char c) { if (c & 0x8) { /* End of block */ if (c & 0x10) poll_finished(); } else { if (c & 0x10) { if (hil_dev.curdev) poll_finished(); /* just in case */ hil_dev.curdev = c & 7; hil_dev.ptr = 0; } } } static inline void handle_data(unsigned char s, unsigned char c) { if (hil_dev.curdev) { hil_dev.data[hil_dev.ptr++] = c; hil_dev.ptr &= 15; } } /* handle HIL interrupts */ static irqreturn_t hil_interrupt(int irq, void *handle) { unsigned char s, c; s = hil_status(); c = hil_read_data(); switch (s >> 4) { case 0x5: handle_status(s, c); break; case 0x6: handle_data(s, c); break; case 0x4: hil_dev.s = s; hil_dev.c = c; mb(); hil_dev.valid = 1; break; } return IRQ_HANDLED; } /* send a command to the HIL */ static void hil_do(unsigned char cmd, unsigned char *data, unsigned int len) { unsigned long flags; spin_lock_irqsave(&hil_dev.lock, flags); while (hil_busy()) /* wait */; hil_command(cmd); while (len--) { while (hil_busy()) /* wait */; hil_write_data(*(data++)); } spin_unlock_irqrestore(&hil_dev.lock, flags); } /* initialize HIL */ static int hil_keyb_init(void) { unsigned char c; unsigned int i, kbid; wait_queue_head_t hil_wait; int err; if (hil_dev.dev) return -ENODEV; /* already initialized */ init_waitqueue_head(&hil_wait); spin_lock_init(&hil_dev.lock); hil_dev.dev = input_allocate_device(); if (!hil_dev.dev) return -ENOMEM; err = request_irq(HIL_IRQ, hil_interrupt, 0, "hil", hil_dev.dev_id); if (err) { printk(KERN_ERR "HIL: Can't get IRQ\n"); goto err1; } /* Turn on interrupts */ hil_do(HIL_INTON, NULL, 0); /* Look for keyboards */ hil_dev.valid = 0; /* clear any pending data */ hil_do(HIL_READKBDSADR, NULL, 0); wait_event_interruptible_timeout(hil_wait, hil_dev.valid, 3 * HZ); if (!hil_dev.valid) printk(KERN_WARNING "HIL: timed out, assuming no keyboard present\n"); c = hil_dev.c; hil_dev.valid = 0; if (c == 0) { kbid = -1; printk(KERN_WARNING "HIL: no keyboard present\n"); } else { kbid = ffz(~c); printk(KERN_INFO "HIL: keyboard found at id %d\n", kbid); } /* set it to raw mode */ c = 0; hil_do(HIL_WRITEKBDSADR, &c, 1); for (i = 0; i < HIL_KEYCODES_SET1_TBLSIZE; i++) if (hphilkeyb_keycode[i] != KEY_RESERVED) __set_bit(hphilkeyb_keycode[i], hil_dev.dev->keybit); hil_dev.dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP); hil_dev.dev->ledbit[0] = BIT_MASK(LED_NUML) | BIT_MASK(LED_CAPSL) | BIT_MASK(LED_SCROLLL); hil_dev.dev->keycodemax = HIL_KEYCODES_SET1_TBLSIZE; hil_dev.dev->keycodesize= sizeof(hphilkeyb_keycode[0]); hil_dev.dev->keycode = hphilkeyb_keycode; hil_dev.dev->name = "HIL keyboard"; hil_dev.dev->phys = "hpkbd/input0"; hil_dev.dev->id.bustype = BUS_HIL; hil_dev.dev->id.vendor = PCI_VENDOR_ID_HP; hil_dev.dev->id.product = 0x0001; hil_dev.dev->id.version = 0x0010; err = input_register_device(hil_dev.dev); if (err) { printk(KERN_ERR "HIL: Can't register device\n"); goto err2; } printk(KERN_INFO "input: %s, ID %d at 0x%08lx (irq %d) found and attached\n", hil_dev.dev->name, kbid, HILBASE, HIL_IRQ); return 0; err2: hil_do(HIL_INTOFF, NULL, 0); free_irq(HIL_IRQ, hil_dev.dev_id); err1: input_free_device(hil_dev.dev); hil_dev.dev = NULL; return err; } static void hil_keyb_exit(void) { if (HIL_IRQ) free_irq(HIL_IRQ, hil_dev.dev_id); /* Turn off interrupts */ hil_do(HIL_INTOFF, NULL, 0); input_unregister_device(hil_dev.dev); hil_dev.dev = NULL; } #if defined(CONFIG_PARISC) static int __init hil_probe_chip(struct parisc_device *dev) { /* Only allow one HIL keyboard */ if (hil_dev.dev) return -ENODEV; if (!dev->irq) { printk(KERN_WARNING "HIL: IRQ not found for HIL bus at 0x%p\n", (void *)dev->hpa.start); return -ENODEV; } hil_base = dev->hpa.start; hil_irq = dev->irq; hil_dev.dev_id = dev; printk(KERN_INFO "Found HIL bus at 0x%08lx, IRQ %d\n", hil_base, hil_irq); return hil_keyb_init(); } static void __exit hil_remove_chip(struct parisc_device *dev) { hil_keyb_exit(); } static const struct parisc_device_id hil_tbl[] __initconst = { { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x00073 }, { 0, } }; #if 0 /* Disabled to avoid conflicts with the HP SDC HIL drivers */ MODULE_DEVICE_TABLE(parisc, hil_tbl); #endif static struct parisc_driver hil_driver __refdata = { .name = "hil", .id_table = hil_tbl, .probe = hil_probe_chip, .remove = __exit_p(hil_remove_chip), }; static int __init hil_init(void) { return register_parisc_driver(&hil_driver); } static void __exit hil_exit(void) { unregister_parisc_driver(&hil_driver); } #else /* !CONFIG_PARISC */ static int __init hil_init(void) { int error; /* Only allow one HIL keyboard */ if (hil_dev.dev) return -EBUSY; if (!MACH_IS_HP300) return -ENODEV; if (!hwreg_present((void *)(HILBASE + HIL_DATA))) { printk(KERN_ERR "HIL: hardware register was not found\n"); return -ENODEV; } if (!request_region(HILBASE + HIL_DATA, 2, "hil")) { printk(KERN_ERR "HIL: IOPORT region already used\n"); return -EIO; } error = hil_keyb_init(); if (error) { release_region(HILBASE + HIL_DATA, 2); return error; } return 0; } static void __exit hil_exit(void) { hil_keyb_exit(); release_region(HILBASE + HIL_DATA, 2); } #endif /* CONFIG_PARISC */ module_init(hil_init); module_exit(hil_exit);
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