Orange Pi5 kernel

^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)  *  linux/drivers/hil/hilkbd.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  *  Copyright (C) 1998 Philip Blundell <philb@gnu.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  *  Copyright (C) 1999 Matthew Wilcox <willy@infradead.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  *  Copyright (C) 1999-2007 Helge Deller <deller@gmx.de>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9)  *  Very basic HP Human Interface Loop (HIL) driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10)  *  This driver handles the keyboard on HP300 (m68k) and on some
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11)  *  HP700 (parisc) series machines.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/pci_ids.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/ioport.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <linux/input.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #include <linux/hil.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #include <linux/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #include <linux/spinlock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #include <asm/irq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) #ifdef CONFIG_HP300
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) #include <asm/hwtest.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) MODULE_AUTHOR("Philip Blundell, Matthew Wilcox, Helge Deller");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) MODULE_DESCRIPTION("HIL keyboard driver (basic functionality)");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) MODULE_LICENSE("GPL v2");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) #if defined(CONFIG_PARISC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38)  #include <asm/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39)  #include <asm/hardware.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40)  #include <asm/parisc-device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41)  static unsigned long hil_base;	/* HPA for the HIL device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42)  static unsigned int hil_irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43)  #define HILBASE		hil_base /* HPPA (parisc) port address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44)  #define HIL_DATA		0x800
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45)  #define HIL_CMD		0x801
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46)  #define HIL_IRQ		hil_irq
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47)  #define hil_readb(p)		gsc_readb(p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48)  #define hil_writeb(v,p)	gsc_writeb((v),(p))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) #elif defined(CONFIG_HP300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52)  #define HILBASE		0xf0428000UL /* HP300 (m68k) port address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53)  #define HIL_DATA		0x1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54)  #define HIL_CMD		0x3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55)  #define HIL_IRQ		2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56)  #define hil_readb(p)		readb((const volatile void __iomem *)(p))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57)  #define hil_writeb(v, p)	writeb((v), (volatile void __iomem *)(p))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) #error "HIL is not supported on this platform"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) /* HIL helper functions */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) #define hil_busy()              (hil_readb(HILBASE + HIL_CMD) & HIL_BUSY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) #define hil_data_available()    (hil_readb(HILBASE + HIL_CMD) & HIL_DATA_RDY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) #define hil_status()            (hil_readb(HILBASE + HIL_CMD))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) #define hil_command(x)          do { hil_writeb((x), HILBASE + HIL_CMD); } while (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) #define hil_read_data()         (hil_readb(HILBASE + HIL_DATA))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) #define hil_write_data(x)       do { hil_writeb((x), HILBASE + HIL_DATA); } while (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) /* HIL constants */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) #define	HIL_BUSY		0x02
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) #define	HIL_DATA_RDY		0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) #define	HIL_SETARD		0xA0		/* set auto-repeat delay */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) #define	HIL_SETARR		0xA2		/* set auto-repeat rate */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) #define	HIL_SETTONE		0xA3		/* set tone generator */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) #define	HIL_CNMT		0xB2		/* clear nmi */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) #define	HIL_INTON		0x5C		/* Turn on interrupts. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) #define	HIL_INTOFF		0x5D		/* Turn off interrupts. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) #define	HIL_READKBDSADR		0xF9
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) #define	HIL_WRITEKBDSADR	0xE9
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) static unsigned int hphilkeyb_keycode[HIL_KEYCODES_SET1_TBLSIZE] __read_mostly =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 	{ HIL_KEYCODES_SET1 };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) /* HIL structure */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) static struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	struct input_dev *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	unsigned int curdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	unsigned char s;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 	unsigned char c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	int valid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	unsigned char data[16];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	unsigned int ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	spinlock_t lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 	void *dev_id;	/* native bus device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) } hil_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) static void poll_finished(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	int down;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	int key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	unsigned char scode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	switch (hil_dev.data[0]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	case 0x40:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 		down = (hil_dev.data[1] & 1) == 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 		scode = hil_dev.data[1] >> 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 		key = hphilkeyb_keycode[scode];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 		input_report_key(hil_dev.dev, key, down);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	hil_dev.curdev = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) }
^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 inline void handle_status(unsigned char s, unsigned char c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 	if (c & 0x8) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 		/* End of block */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 		if (c & 0x10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 			poll_finished();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 		if (c & 0x10) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 			if (hil_dev.curdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 				poll_finished();  /* just in case */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 			hil_dev.curdev = c & 7;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 			hil_dev.ptr = 0;
^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) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) static inline void handle_data(unsigned char s, unsigned char c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	if (hil_dev.curdev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 		hil_dev.data[hil_dev.ptr++] = c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 		hil_dev.ptr &= 15;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) /* handle HIL interrupts */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) static irqreturn_t hil_interrupt(int irq, void *handle)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	unsigned char s, c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	s = hil_status();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	c = hil_read_data();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 	switch (s >> 4) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	case 0x5:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 		handle_status(s, c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	case 0x6:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 		handle_data(s, c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	case 0x4:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 		hil_dev.s = s;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 		hil_dev.c = c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 		mb();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 		hil_dev.valid = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) /* send a command to the HIL */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) static void hil_do(unsigned char cmd, unsigned char *data, unsigned int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 	spin_lock_irqsave(&hil_dev.lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	while (hil_busy())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 		/* wait */;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 	hil_command(cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	while (len--) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 		while (hil_busy())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 			/* wait */;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 		hil_write_data(*(data++));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	spin_unlock_irqrestore(&hil_dev.lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) /* initialize HIL */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) static int hil_keyb_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 	unsigned char c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	unsigned int i, kbid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 	wait_queue_head_t hil_wait;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 	if (hil_dev.dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 		return -ENODEV; /* already initialized */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	init_waitqueue_head(&hil_wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	spin_lock_init(&hil_dev.lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	hil_dev.dev = input_allocate_device();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	if (!hil_dev.dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	err = request_irq(HIL_IRQ, hil_interrupt, 0, "hil", hil_dev.dev_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 		printk(KERN_ERR "HIL: Can't get IRQ\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 		goto err1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 	/* Turn on interrupts */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 	hil_do(HIL_INTON, NULL, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 	/* Look for keyboards */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 	hil_dev.valid = 0;	/* clear any pending data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 	hil_do(HIL_READKBDSADR, NULL, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 	wait_event_interruptible_timeout(hil_wait, hil_dev.valid, 3 * HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	if (!hil_dev.valid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 		printk(KERN_WARNING "HIL: timed out, assuming no keyboard present\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	c = hil_dev.c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 	hil_dev.valid = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 	if (c == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 		kbid = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 		printk(KERN_WARNING "HIL: no keyboard present\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 		kbid = ffz(~c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 		printk(KERN_INFO "HIL: keyboard found at id %d\n", kbid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 	/* set it to raw mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 	c = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 	hil_do(HIL_WRITEKBDSADR, &c, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 	for (i = 0; i < HIL_KEYCODES_SET1_TBLSIZE; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 		if (hphilkeyb_keycode[i] != KEY_RESERVED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 			__set_bit(hphilkeyb_keycode[i], hil_dev.dev->keybit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 	hil_dev.dev->evbit[0]	= BIT_MASK(EV_KEY) | BIT_MASK(EV_REP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 	hil_dev.dev->ledbit[0]	= BIT_MASK(LED_NUML) | BIT_MASK(LED_CAPSL) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 		BIT_MASK(LED_SCROLLL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 	hil_dev.dev->keycodemax	= HIL_KEYCODES_SET1_TBLSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 	hil_dev.dev->keycodesize= sizeof(hphilkeyb_keycode[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 	hil_dev.dev->keycode	= hphilkeyb_keycode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 	hil_dev.dev->name	= "HIL keyboard";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 	hil_dev.dev->phys	= "hpkbd/input0";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 	hil_dev.dev->id.bustype	= BUS_HIL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 	hil_dev.dev->id.vendor	= PCI_VENDOR_ID_HP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 	hil_dev.dev->id.product	= 0x0001;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 	hil_dev.dev->id.version	= 0x0010;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 	err = input_register_device(hil_dev.dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 	if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 		printk(KERN_ERR "HIL: Can't register device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 		goto err2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 	printk(KERN_INFO "input: %s, ID %d at 0x%08lx (irq %d) found and attached\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 	       hil_dev.dev->name, kbid, HILBASE, HIL_IRQ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) err2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 	hil_do(HIL_INTOFF, NULL, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 	free_irq(HIL_IRQ, hil_dev.dev_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) err1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 	input_free_device(hil_dev.dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 	hil_dev.dev = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) static void hil_keyb_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 	if (HIL_IRQ)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 		free_irq(HIL_IRQ, hil_dev.dev_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 	/* Turn off interrupts */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 	hil_do(HIL_INTOFF, NULL, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 	input_unregister_device(hil_dev.dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 	hil_dev.dev = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) #if defined(CONFIG_PARISC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) static int __init hil_probe_chip(struct parisc_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 	/* Only allow one HIL keyboard */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 	if (hil_dev.dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 	if (!dev->irq) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 		printk(KERN_WARNING "HIL: IRQ not found for HIL bus at 0x%p\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 			(void *)dev->hpa.start);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 	hil_base = dev->hpa.start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 	hil_irq  = dev->irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 	hil_dev.dev_id = dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 	printk(KERN_INFO "Found HIL bus at 0x%08lx, IRQ %d\n", hil_base, hil_irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 	return hil_keyb_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) static int __exit hil_remove_chip(struct parisc_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 	hil_keyb_exit();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) static const struct parisc_device_id hil_tbl[] __initconst = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) 	{ HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x00073 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) 	{ 0, }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) #if 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) /* Disabled to avoid conflicts with the HP SDC HIL drivers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) MODULE_DEVICE_TABLE(parisc, hil_tbl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) static struct parisc_driver hil_driver __refdata = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 	.name		= "hil",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) 	.id_table	= hil_tbl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) 	.probe		= hil_probe_chip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) 	.remove		= __exit_p(hil_remove_chip),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) static int __init hil_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) 	return register_parisc_driver(&hil_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) static void __exit hil_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) 	unregister_parisc_driver(&hil_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) #else /* !CONFIG_PARISC */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) static int __init hil_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) 	int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) 	/* Only allow one HIL keyboard */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) 	if (hil_dev.dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) 		return -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) 	if (!MACH_IS_HP300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) 	if (!hwreg_present((void *)(HILBASE + HIL_DATA))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) 		printk(KERN_ERR "HIL: hardware register was not found\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) 	if (!request_region(HILBASE + HIL_DATA, 2, "hil")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) 		printk(KERN_ERR "HIL: IOPORT region already used\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) 		return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) 	error = hil_keyb_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) 	if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) 		release_region(HILBASE + HIL_DATA, 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) 		return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) static void __exit hil_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) 	hil_keyb_exit();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) 	release_region(HILBASE + HIL_DATA, 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) #endif /* CONFIG_PARISC */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) module_init(hil_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) module_exit(hil_exit);