Index: kernel-source-rx-34-2.6.21.0/arch/arm/mach-omap2/board-n800-dvfs.c
===================================================================
--- kernel-source-rx-34-2.6.21.0.orig/arch/arm/mach-omap2/board-n800-dvfs.c	2008-03-01 14:24:49.000000000 +0100
+++ kernel-source-rx-34-2.6.21.0/arch/arm/mach-omap2/board-n800-dvfs.c	2008-03-01 14:39:24.000000000 +0100
@@ -41,11 +41,12 @@
 	OP_3,
 	NUM_OP,
 	DEFAULT_OP = OP_1,
-	OP_DSP_H   = OP_1,
 	OP_CPU_H   = OP_0,
 	OP_CPU_ONDEMAND = 255,
 };
 
+static unsigned int op_dsp_h = OP_1;
+
 static unsigned int op_list[NUM_OP][NUM_OP_PARMS] = {
 	[OP_0] = {
 		[_54M_SRC_CLK_KHZ]	=  54000,
@@ -177,9 +178,9 @@
 	}
 
 	if (op_policy.task)
-		new_op = OP_DSP_H;
+		new_op = op_dsp_h;
 	else if (op_policy.cam)
-		new_op = OP_DSP_H;
+		new_op = op_dsp_h;
 	else if (op_policy.path)
 		new_op = OP_CPU_H;
 	else
@@ -266,8 +267,47 @@
        .notifier_call = op_policy_notifier,
 };
 
+static ssize_t op_dsp_show(struct subsystem * subsys, char *buf)
+{
+	return sprintf(buf, "%u\n", op_dsp_h);
+}
+
+static ssize_t op_dsp_store(struct subsystem * subsys,
+			      const char * buf, size_t n)
+{
+	unsigned value;
+
+	if (sscanf(buf, "%u", &value) != 1 || (value > OP_1)) {
+		printk(KERN_ERR "OP: Invalid index\n");
+		return -EINVAL;
+	}
+
+	mutex_lock(&op_policy.lock);
+	if (op_policy.task) {
+		n = -EBUSY;
+	} else {
+		op_dsp_h = value;
+	}
+	mutex_unlock(&op_policy.lock);
+
+	return n;
+}
+
+static struct subsys_attribute op_dsp_attr = {
+	.attr   = {
+		.name = __stringify(op_dsp),
+		.mode = 0644,
+	},
+	.show   = op_dsp_show,
+	.store  = op_dsp_store,
+};
+
+extern struct subsystem power_subsys;
+
 int __init n800_dvfs_init(void)
 {
+	int ret;
+
 	mutex_init(&op_policy.lock);
 	op_policy.dvfs_wq = create_workqueue("dvfs");
 	INIT_WORK(&op_policy.update_policy_work, update_policy_work);
@@ -278,5 +318,10 @@
 			      NUM_OP, DEFAULT_OP);
 	cpufreq_register_notifier(&dsp_state_change_block,
 				  CPUFREQ_POLICY_NOTIFIER);
+
+	ret = subsys_create_file(&power_subsys, &op_dsp_attr);
+	if (ret)
+		printk(KERN_ERR "subsys_create_file failed: %d\n", ret);
+
 	return 0;
 }