/* * FILE NAME * drivers/char/vr41xx_keyb.c * * BRIEF MODULE DESCRIPTION * Keyboard driver for NEC VR4100 series Keyboard Interface Unit. * * Copyright (C) 1999 Bradley D. LaRonde * Copyright (C) 1999 Hiroshi Kawashima * Copyright (C) 2000 Michael Klar * Copyright (C) 2002,2003 Yoichi Yuasa * * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. */ /* * Changes: * version 1.0 * Yoichi Yuasa Mon, 25 Mar 2002 * - Rewrote extensively because of 2.4.18. * * version 1.1 * Yoichi Yuasa Wed, 9 Sep 200 * - Added NEC VRC4173 KIU support. */ #include #include #include #include #ifdef CONFIG_PCI #include #endif #include #include #include #include #include #include #ifdef CONFIG_VRC4173 #include #endif #define KIU_BASE KSEG1ADDR(0x0b000180) #define MKIUINTREG KSEG1ADDR(0x0b000092) #define VRC4173_KIU_OFFSET 0x100 #define VRC4173_MKIUINTREG_OFFSET 0x072 #define KIUDAT0 0x00 #define KIUDAT1 0x02 #define KIUDAT2 0x04 #define KIUDAT3 0x06 #define KIUDAT4 0x08 #define KIUDAT5 0x0a #define KIUDAT6 0x0c #define KIUDAT7 0x0e #define KIUSCANREP 0x10 #define KIUSCANREP_KEYEN 0x8000 #define KIUSCANREP_STPREP(x) ((x) << 4) #define KIUSCANREP_SCANSTP 0x0008 #define KIUSCANREP_SCANSTART 0x0004 #define KIUSCANREP_ATSTP 0x0002 #define KIUSCANREP_ATSCAN 0x0001 #define KIUSCANS 0x12 #define KIUSCANS_SCANNING 0x0003 #define KIUSCANS_INTERVAL 0x0002 #define KIUSCANS_WAITKEYIN 0x0001 #define KIUSCANS_STOPPED 0x0000 #define KIUWKS 0x14 #define KIUWKS_T3CNT 0x7c00 #define KIUWKS_T3CNT_SHIFT 10 #define KIUWKS_T2CNT 0x03e0 #define KIUWKS_T2CNT_SHIFT 5 #define KIUWKS_T1CNT 0x001f #define KIUWKS_T1CNT_SHIFT 0 #define KIUWKS_CNT_USEC(x) (((x) / 30) - 1) #define KIUWKI 0x16 #define KIUWKI_INTERVAL_USEC(x) ((x) / 30) #define KIUINT 0x18 #define KIUINT_KDATLOST 0x0004 #define KIUINT_KDATRDY 0x0002 #define KIUINT_SCANINT 0x0001 #define KIURST 0x1a #define KIURST_KIURST 0x0001 #define KIUGPEN 0x1c #define KIUGPEN_KGPEN(x) ((uint16_t)1 << (x)) #define SCANLINE 0x1e #define SCANLINE_DONTUSE 0x0003 #define SCANLINE_8LINES 0x0002 #define SCANLINE_10LINES 0x0001 #define SCANLINE_12LINES 0x0000 static unsigned long kiu_base; static unsigned long mkiuintreg; #ifdef CONFIG_VRC4173 #define kiu_readw(offset) vrc4173_inw(kiu_base + (offset)) #define kiu_writew(val, offset) vrc4173_outw(val, kiu_base + (offset)) #define mkiuintreg_writew(val) vrc4173_outw((val), mkiuintreg) #else #define kiu_readw(offset) readw(kiu_base + (offset)) #define kiu_writew(val, offset) writew(val, kiu_base + (offset)) #define mkiuintreg_writew(val) writew((val), mkiuintreg) #endif #define KIU_CLOCK 0x0008 #ifdef CONFIG_VRC4173 #define KIU_IRQ VRC4173_KIU_IRQ #else #define KIU_IRQ SYSINT1_IRQ(7) #endif #define KEY_UP 0 #define KEY_DOWN 1 #define DEFAULT_KIUDAT_REGS 6 #define DEFAULT_DATA_NOT_REVERSED 0 #define DEFAULT_T3CNT KIUWKS_CNT_USEC(200) #define DEFAULT_T2CNT KIUWKS_CNT_USEC(200) #define DEFAULT_T1CNT KIUWKS_CNT_USEC(200) #define DEFAULT_SCAN_INTERVAL KIUWKI_INTERVAL_USEC(30000) #define DEFAULT_REPEAT_DELAY HZ/4 #define DEFAULT_REPEAT_RATE HZ/25 static char *kiu_driver_name = "Keyboard driver"; static char *kiu_driver_version = "1.1"; static char *kiu_driver_revdate = "2003-09-09"; static char *kiu_driver_device_name = "NEC VR4100 series KIU"; static unsigned char kiudat_regs = DEFAULT_KIUDAT_REGS; static unsigned char data_reverse = DEFAULT_DATA_NOT_REVERSED; static uint16_t scanlines = SCANLINE_12LINES; static uint16_t t3cnt = DEFAULT_T3CNT; static uint16_t t2cnt = DEFAULT_T2CNT; static uint16_t t1cnt = DEFAULT_T1CNT; static uint16_t scan_interval = DEFAULT_SCAN_INTERVAL; static unsigned long repeat_delay = DEFAULT_REPEAT_DELAY; static unsigned long repeat_rate = DEFAULT_REPEAT_RATE; static int repeat_scancode = -1; static unsigned long next_handle_time; struct kiudat_t { uint32_t reg; uint16_t data; }; static struct kiudat_t kiudat [8] = { {KIUDAT0, 0}, {KIUDAT1, 0}, {KIUDAT2, 0}, {KIUDAT3, 0}, {KIUDAT4, 0}, {KIUDAT5, 0}, {KIUDAT6, 0}, {KIUDAT7, 0}, }; int kbd_setkeycode(unsigned int scancode, unsigned int keycode) { return (scancode == keycode) ? 0 : -EINVAL; } int kbd_getkeycode(unsigned int scancode) { return scancode; } int kbd_translate(unsigned char scancode, unsigned char *keycode, char raw_mode) { *keycode = scancode; return 1; } char kbd_unexpected_up(unsigned char keycode) { printk(KERN_WARNING "vr41xx_keyb: unexpected up, keycode 0x%02x\n", keycode); return 0x80; } void kbd_leds(unsigned char leds) { return; } static inline void handle_kiudat(uint16_t data, uint16_t cmp_data, int scancode) { uint16_t mask; int down, candidate_scancode = 0; for (mask = 0x0001; mask ; mask <<= 1) { if (cmp_data & mask) { down = data & mask ? KEY_DOWN : KEY_UP; if (down == KEY_DOWN) { repeat_scancode = scancode; next_handle_time = jiffies + repeat_delay; } else { if (repeat_scancode == scancode) repeat_scancode = -1; } handle_scancode(scancode, down); } if (data & mask) { candidate_scancode = scancode; } scancode++; } if ((repeat_scancode < 0) && (candidate_scancode > 0)) { repeat_scancode = candidate_scancode; next_handle_time = jiffies + repeat_delay; } } static inline void handle_kiu_event(void) { struct kiudat_t *kiu = kiudat; uint16_t data, last_data, cmp_data; int i; for (i = 0; i < kiudat_regs; i++) { last_data = kiu->data; data = kiu_readw(kiu->reg); if (data_reverse) data = ~data; kiu->data = data; cmp_data = data ^ last_data; handle_kiudat(data, cmp_data, i * 16); kiu++; } if ((repeat_scancode >= 0) && (time_after_eq(jiffies, next_handle_time))) { handle_scancode(repeat_scancode, KEY_DOWN); next_handle_time = jiffies + repeat_rate; } } static void kiu_interrupt(int irq, void *dev_id, struct pt_regs *regs) { uint16_t status; mkiuintreg_writew(0); status = kiu_readw(KIUINT); kiu_writew(KIUINT_KDATLOST | KIUINT_KDATRDY | KIUINT_SCANINT, KIUINT); if (status & KIUINT_KDATRDY) handle_kiu_event(); mkiuintreg_writew(KIUINT_KDATLOST | KIUINT_KDATRDY); } #ifdef CONFIG_PM static int pm_kiu_request(struct pm_dev *dev, pm_request_t rqst, void *data) { switch (rqst) { case PM_SUSPEND: mkiuintreg_writew(KIUINT_SCANINT); break; case PM_RESUME: kiu_writew(KIUINT_KDATLOST | KIUINT_KDATRDY | KIUINT_SCANINT, KIUINT); mkiuintreg_writew(KIUINT_KDATLOST | KIUINT_KDATRDY, MKIUINTREG); break; } return 0; } #endif void __devinit kbd_init_hw(void) { uint16_t kiugpen = 0; int i; if (current_cpu_data.cputype == CPU_VR4111 || current_cpu_data.cputype == CPU_VR4121) { kiu_base = KIU_BASE; mkiuintreg = MKIUINTREG; #if defined(CONFIG_PCI) && defined(CONFIG_VRC4173) } else if (current_cpu_data.cputype == CPU_VR4122 || current_cpu_data.cputype == CPU_VR4131) { struct pci_dev *dev; int found = 0; dev = pci_find_device(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_VRC4173, NULL); if (dev != NULL) { switch (scanlines) { case SCANLINE_8LINES: vrc4173_select_function(KIU8_SELECT); found = 1; break; case SCANLINE_10LINES: vrc4173_select_function(KIU10_SELECT); found = 1; break; case SCANLINE_12LINES: vrc4173_select_function(KIU12_SELECT); found = 1; break; default: break; } if (found != 0) { kiu_base = VRC4173_KIU_OFFSET; mkiuintreg = VRC4173_MKIUINTREG_OFFSET; vrc4173_clock_supply(VRC4173_KIU_CLOCK); } } #endif } if (kiu_base == 0 || mkiuintreg == 0) return; printk(KERN_INFO "%s version %s (%s) for %s\n", kiu_driver_name, kiu_driver_version, kiu_driver_revdate, kiu_driver_device_name); mkiuintreg_writew(0); if (current_cpu_data.cputype == CPU_VR4111 || current_cpu_data.cputype == CPU_VR4121) vr41xx_clock_supply(KIU_CLOCK); kiu_writew(KIURST_KIURST, KIURST); for (i = 0; i < scanlines; i++) kiugpen &= ~(0x0001 << i); kiu_writew(kiugpen, KIUGPEN); kiu_writew(scanlines, SCANLINE); kiu_writew((t3cnt << KIUWKS_T3CNT_SHIFT) | (t2cnt << KIUWKS_T2CNT_SHIFT) | (t1cnt << KIUWKS_T1CNT_SHIFT), KIUWKS); kiu_writew(scan_interval, KIUWKI); kiu_writew(KIUINT_KDATLOST | KIUINT_KDATRDY | KIUINT_SCANINT, KIUINT); request_irq(KIU_IRQ, kiu_interrupt, 0, "keyboard", NULL); mkiuintreg_writew(KIUINT_KDATLOST | KIUINT_KDATRDY); kiu_writew(KIUSCANREP_KEYEN | KIUSCANREP_STPREP(1) | KIUSCANREP_ATSTP | KIUSCANREP_ATSCAN, KIUSCANREP); #ifdef CONFIG_PM pm_register(PM_SYS_DEV, PM_SYS_KBC, pm_kiu_request); #endif } static int __devinit vr41xx_kbd_setup(char *options) { char *this_opt; int num; if (!options || !*options) return 1; for (this_opt = strtok(options, ","); this_opt; this_opt = strtok(NULL, ",")) { if (!strncmp(this_opt, "regs:", 5)) { num = simple_strtoul(this_opt+5, NULL, 0); if (num == 6 || num == 8) kiudat_regs = num; } else if (!strncmp(this_opt, "lines:", 6)) { num = simple_strtoul(this_opt+6, NULL, 0); if (num == 8) scanlines = SCANLINE_8LINES; else if (num == 10) scanlines = SCANLINE_10LINES; else if (num == 12) scanlines = SCANLINE_12LINES; } else if (!strncmp(this_opt, "reverse:", 8)) { num = simple_strtoul(this_opt+8, NULL, 0); if (num == 0 || num == 1) data_reverse = num; } else if (!strncmp(this_opt, "t3cnt:", 6)) { num = simple_strtoul(this_opt+6, NULL, 0); if (num >= 60 && num <= 960) t3cnt = KIUWKS_CNT_USEC(num); } else if (!strncmp(this_opt, "t2cnt:", 6)) { num = simple_strtoul(this_opt+6, NULL, 0); if (num >= 60 && num <= 960) t2cnt = KIUWKS_CNT_USEC(num); } else if (!strncmp(this_opt, "t1cnt:", 6)) { num = simple_strtoul(this_opt+6, NULL, 0); if (num >= 60 && num <= 960) t1cnt = KIUWKS_CNT_USEC(num); } else if (!strncmp(this_opt, "interval:", 9)) { num = simple_strtoul(this_opt+9, NULL, 0); if (num >= 30 && num <= 30690) scan_interval = KIUWKI_INTERVAL_USEC(num); } else if (!strncmp(this_opt, "delay:", 6)) { num = simple_strtoul(this_opt+6, NULL, 0); if (num > 0 && num <= HZ) repeat_delay = num; } else if (!strncmp(this_opt, "rate:", 5)) { num = simple_strtoul(this_opt+5, NULL, 0); if (num > 0 && num <= HZ) repeat_rate = num; } } return 1; } __setup("vr41xx_kbd=", vr41xx_kbd_setup);