patch-2.4.10 linux/drivers/tc/lk201.c

• Lines: 238
• Date: Mon Aug 27 08:56:31 2001
• Orig file: v2.4.9/linux/drivers/tc/lk201.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.9/linux/drivers/tc/lk201.c linux/drivers/tc/lk201.c
@@ -0,0 +1,237 @@
+/*
+ *
+ * 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.
+ *
+ */
+#include <linux/errno.h>
+#include <linux/tty.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/kbd_ll.h>
+#include <asm/wbflush.h>
+#include <asm/dec/tc.h>
+#include <asm/dec/machtype.h>
+
+#include "zs.h"
+#include "lk201.h"
+
+/* Simple translation table for the SysRq keys */
+
+#ifdef CONFIG_MAGIC_SYSRQ
+/*
+ * Actually no translation at all, at least until we figure out
+ * how to define SysRq for LK201 and friends. --macro
+ */
+unsigned char lk201_sysrq_xlate[128];
+unsigned char *kbd_sysrq_xlate = lk201_sysrq_xlate;
+#endif
+
+#define KEYB_LINE	3
+
+static int __init lk201_init(struct dec_serial *);
+static void __init lk201_info(struct dec_serial *);
+static void lk201_kbd_rx_char(unsigned char, unsigned char);
+
+struct zs_hook lk201_kbdhook = {
+	init_channel:   lk201_init,
+	init_info:      lk201_info,
+	rx_char:        NULL,
+	poll_rx_char:   NULL,
+	poll_tx_char:   NULL,
+	cflags:         B4800 | CS8 | CSTOPB | CLOCAL
+};
+
+/*
+ * This is used during keyboard initialisation
+ */
+static unsigned char lk201_reset_string[] = {
+	LK_CMD_LEDS_ON, LK_PARAM_LED_MASK(0xf),	/* show we are resetting */
+	LK_CMD_SET_DEFAULTS,
+	LK_CMD_MODE(LK_MODE_RPT_DOWN, 1),
+	LK_CMD_MODE(LK_MODE_RPT_DOWN, 2),
+	LK_CMD_MODE(LK_MODE_RPT_DOWN, 3),
+	LK_CMD_MODE(LK_MODE_RPT_DOWN, 4),
+	LK_CMD_MODE(LK_MODE_DOWN_UP, 5),
+	LK_CMD_MODE(LK_MODE_DOWN_UP, 6),
+	LK_CMD_MODE(LK_MODE_RPT_DOWN, 7),
+	LK_CMD_MODE(LK_MODE_RPT_DOWN, 8),
+	LK_CMD_MODE(LK_MODE_RPT_DOWN, 9),
+	LK_CMD_MODE(LK_MODE_RPT_DOWN, 10),
+	LK_CMD_MODE(LK_MODE_RPT_DOWN, 11),
+	LK_CMD_MODE(LK_MODE_RPT_DOWN, 12),
+	LK_CMD_MODE(LK_MODE_DOWN, 13),
+	LK_CMD_MODE(LK_MODE_RPT_DOWN, 14),
+	LK_CMD_ENB_RPT,
+	LK_CMD_DIS_KEYCLK,
+	LK_CMD_RESUME,
+	LK_CMD_ENB_BELL, LK_PARAM_VOLUME(4),
+	LK_CMD_LEDS_OFF, LK_PARAM_LED_MASK(0xf)
+};
+
+static int __init lk201_reset(struct dec_serial *info)
+{
+	int i;
+
+	for (i = 0; i < sizeof(lk201_reset_string); i++)
+		if (info->hook->poll_tx_char(info, lk201_reset_string[i])) {
+			printk(__FUNCTION__" transmit timeout\n");
+			return -EIO;
+		}
+	return 0;
+}
+
+void kbd_leds(unsigned char leds)
+{
+	return;
+}
+
+int kbd_setkeycode(unsigned int scancode, unsigned int keycode)
+{
+	return -EINVAL;
+}
+
+int kbd_getkeycode(unsigned int scancode)
+{
+	return -EINVAL;
+}
+
+int kbd_translate(unsigned char scancode, unsigned char *keycode,
+		  char raw_mode)
+{
+	*keycode = scancode;
+	return 1;
+}
+
+char kbd_unexpected_up(unsigned char keycode)
+{
+	return 0x80;
+}
+
+static void lk201_kbd_rx_char(unsigned char ch, unsigned char stat)
+{
+	static int shift_state = 0;
+	static int prev_scancode;
+	unsigned char c = scancodeRemap[ch];
+
+	if (!stat || stat == 4) {
+		switch (ch) {
+		case LK_KEY_ACK:
+			break;
+		case LK_KEY_LOCK:
+			shift_state ^= LK_LOCK;
+			handle_scancode(c, shift_state && LK_LOCK ? 1 : 0);
+			break;
+		case LK_KEY_SHIFT:
+			shift_state ^= LK_SHIFT;
+			handle_scancode(c, shift_state && LK_SHIFT ? 1 : 0);
+			break;
+		case LK_KEY_CTRL:
+			shift_state ^= LK_CTRL;
+			handle_scancode(c, shift_state && LK_CTRL ? 1 : 0);
+			break;
+		case LK_KEY_COMP:
+			shift_state ^= LK_COMP;
+			handle_scancode(c, shift_state && LK_COMP ? 1 : 0);
+			break;
+		case LK_KEY_RELEASE:
+			if (shift_state & LK_SHIFT)
+				handle_scancode(scancodeRemap[LK_KEY_SHIFT], 0);
+			if (shift_state & LK_CTRL)
+				handle_scancode(scancodeRemap[LK_KEY_CTRL], 0);
+			if (shift_state & LK_COMP)
+				handle_scancode(scancodeRemap[LK_KEY_COMP], 0);
+			if (shift_state & LK_LOCK)
+				handle_scancode(scancodeRemap[LK_KEY_LOCK], 0);
+			shift_state = 0;
+			break;
+		case LK_KEY_REPEAT:
+			handle_scancode(prev_scancode, 1);
+			break;
+		default:
+			prev_scancode = c;
+			handle_scancode(c, 1);
+			break;
+		}
+	} else
+		printk("Error reading LKx01 keyboard: 0x%02x\n", stat);
+}
+
+static void __init lk201_info(struct dec_serial *info)
+{
+}
+
+static int __init lk201_init(struct dec_serial *info)
+{
+	unsigned int ch, id = 0;
+	int result;
+
+	printk("DECstation LK keyboard driver v0.04... ");
+
+	result = lk201_reset(info);
+	if (result)
+		return result;
+	mdelay(10);
+
+	/*
+	 * Detect whether there is an LK201 or an LK401
+	 * The LK401 has ALT keys...
+	 */
+	info->hook->poll_tx_char(info, LK_CMD_REQ_ID);
+	while ((ch = info->hook->poll_rx_char(info)) > 0)
+		id = ch;
+
+	switch (id) {
+	case 1:
+		printk("LK201 detected\n");
+		break;
+	case 2:
+		printk("LK401 detected\n");
+		break;
+	default:
+		printk("unknown keyboard, ID %d,\n", id);
+		printk("... please report to <linux-mips@oss.sgi.com>\n");
+	}
+
+	/*
+	 * now we're ready
+	 */
+	info->hook->rx_char = lk201_kbd_rx_char;
+
+	return 0;
+}
+
+void __init kbd_init_hw(void)
+{
+	extern int register_zs_hook(unsigned int, struct zs_hook *);
+	extern int unregister_zs_hook(unsigned int);
+
+	if (TURBOCHANNEL) {
+		if (mips_machtype != MACH_DS5000_XX) {
+			/*
+			 * This is not a MAXINE, so:
+			 *
+			 * kbd_init_hw() is being called before
+			 * rs_init() so just register the kbd hook
+			 * and let zs_init do the rest :-)
+			 */
+			if (mips_machtype == MACH_DS5000_200)
+				printk("LK201 Support for DS5000/200 not yet ready ...\n");
+			else
+				if(!register_zs_hook(KEYB_LINE, &lk201_kbdhook))
+					unregister_zs_hook(KEYB_LINE);
+		}
+	} else {
+		/*
+		 * TODO: modify dz.c to allow similar hooks
+		 * for LK201 handling on DS2100, DS3100, and DS5000/200
+		 */
+		printk("LK201 Support for DS3100 not yet ready ...\n");
+	}
+}
+
+
+
+