2 * linux/arch/sh/kernel/led_microdev.c
4 * Copyright (C) 2002 Stuart Menefy <stuart.menefy@st.com>
5 * Copyright (C) 2003 Richard Curnow (Richard.Curnow@superh.com)
7 * May be copied or modified under the terms of the GNU General Public
8 * License. See linux/COPYING for more information.
12 #include <linux/config.h>
15 #define LED_REGISTER 0xa6104d20
17 static void mach_led_d9(int value)
20 reg = ctrl_inl(LED_REGISTER);
23 ctrl_outl(reg, LED_REGISTER);
27 static void mach_led_d10(int value)
30 reg = ctrl_inl(LED_REGISTER);
32 reg |= ((value & 1) << 1);
33 ctrl_outl(reg, LED_REGISTER);
38 #ifdef CONFIG_HEARTBEAT
39 #include <linux/sched.h>
41 static unsigned char banner_table[] = {
42 0x11, 0x01, 0x11, 0x01, 0x11, 0x03,
43 0x11, 0x01, 0x11, 0x01, 0x13, 0x03,
44 0x11, 0x01, 0x13, 0x01, 0x13, 0x01, 0x11, 0x03,
46 0x11, 0x01, 0x13, 0x01, 0x11, 0x03,
47 0x11, 0x01, 0x11, 0x01, 0x11, 0x01, 0x11, 0x07,
48 0x13, 0x01, 0x13, 0x03,
49 0x11, 0x01, 0x11, 0x03,
50 0x13, 0x01, 0x11, 0x01, 0x13, 0x01, 0x11, 0x03,
51 0x11, 0x01, 0x13, 0x01, 0x11, 0x03,
52 0x13, 0x01, 0x13, 0x01, 0x13, 0x03,
53 0x13, 0x01, 0x11, 0x01, 0x11, 0x03,
55 0x11, 0x01, 0x11, 0x01, 0x11, 0x01, 0x13, 0x07,
59 static void banner(void)
67 int val = banner_table[pos];
70 val = banner_table[pos];
73 mach_led_d10((val >> 4) & 1);
74 count = 10 * (val & 0xf);
78 /* From heartbeat_harp in the stboards directory */
79 /* acts like an actual heart beat -- ie thump-thump-pause... */
80 void microdev_heartbeat(void)
82 static unsigned cnt = 0, period = 0, dist = 0;
84 if (cnt == 0 || cnt == dist)
86 else if (cnt == 7 || cnt == dist+7)
91 /* The hyperbolic function below modifies the heartbeat period
92 * length in dependency of the current (5min) load. It goes
93 * through the points f(0)=126, f(1)=86, f(5)=51,
95 period = ((672<<FSHIFT)/(5*avenrun[0]+(7<<FSHIFT))) + 30;