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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/arm/mach-integrator/leds.c
downloadlinux-stericsson-2.6.12-rc2.tar.gz
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/arm/mach-integrator/leds.c')
-rw-r--r--arch/arm/mach-integrator/leds.c88
1 files changed, 88 insertions, 0 deletions
diff --git a/arch/arm/mach-integrator/leds.c b/arch/arm/mach-integrator/leds.c
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+/*
+ * linux/arch/arm/mach-integrator/leds.c
+ *
+ * Integrator/AP and Integrator/CP LED control routines
+ *
+ * Copyright (C) 1999 ARM Limited
+ * Copyright (C) 2000 Deep Blue Solutions Ltd
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#include <linux/kernel.h>
+#include <linux/init.h>
+
+#include <asm/hardware.h>
+#include <asm/io.h>
+#include <asm/leds.h>
+#include <asm/system.h>
+#include <asm/mach-types.h>
+#include <asm/arch/cm.h>
+
+static int saved_leds;
+
+static void integrator_leds_event(led_event_t ledevt)
+{
+ unsigned long flags;
+ const unsigned int dbg_base = IO_ADDRESS(INTEGRATOR_DBG_BASE);
+ unsigned int update_alpha_leds;
+
+ // yup, change the LEDs
+ local_irq_save(flags);
+ update_alpha_leds = 0;
+
+ switch(ledevt) {
+ case led_idle_start:
+ cm_control(CM_CTRL_LED, 0);
+ break;
+
+ case led_idle_end:
+ cm_control(CM_CTRL_LED, CM_CTRL_LED);
+ break;
+
+ case led_timer:
+ saved_leds ^= GREEN_LED;
+ update_alpha_leds = 1;
+ break;
+
+ case led_red_on:
+ saved_leds |= RED_LED;
+ update_alpha_leds = 1;
+ break;
+
+ case led_red_off:
+ saved_leds &= ~RED_LED;
+ update_alpha_leds = 1;
+ break;
+
+ default:
+ break;
+ }
+
+ if (update_alpha_leds) {
+ while (__raw_readl(dbg_base + INTEGRATOR_DBG_ALPHA_OFFSET) & 1);
+ __raw_writel(saved_leds, dbg_base + INTEGRATOR_DBG_LEDS_OFFSET);
+ }
+ local_irq_restore(flags);
+}
+
+static int __init leds_init(void)
+{
+ if (machine_is_integrator() || machine_is_cintegrator())
+ leds_event = integrator_leds_event;
+
+ return 0;
+}
+
+__initcall(leds_init);