sh: heartbeat consolidation for banked LEDs.

This consolidates the various board heartbeat LED implementations,
used for strobing the load average across a LED bank. Those boards
not implementing a full bank can hook in via the LED class.

We leave the compat hook in the machvec for now until those non-banked
boards are able to migrate to the drivers/leds.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

3 files changed, 31 insertions, 57 deletions

diff --git a/arch/sh/boards/se/770x/Makefile b/arch/sh/boards/se/770x/Makefile
index 9a5035f80ec..8e624b06d5e 100644
--- a/arch/sh/boards/se/770x/Makefile
+++ b/arch/sh/boards/se/770x/Makefile
@@ -3,4 +3,3 @@
 #
 
 obj-y	 := setup.o io.o irq.o
-obj-$(CONFIG_HEARTBEAT) += led.o
diff --git a/arch/sh/boards/se/770x/led.c b/arch/sh/boards/se/770x/led.c
deleted file mode 100644
index d93dd831b2a..00000000000
--- a/arch/sh/boards/se/770x/led.c
+++ /dev/null
@@ -1,52 +0,0 @@
-/*
- * linux/arch/sh/boards/se/770x/led.c
- *
- * Copyright (C) 2000 Stuart Menefy <stuart.menefy@st.com>
- *
- * May be copied or modified under the terms of the GNU General Public
- * License.  See linux/COPYING for more information.
- *
- * This file contains Solution Engine specific LED code.
- */
-
-#include <linux/sched.h>
-#include <asm/se.h>
-
-/* Cycle the LED's in the clasic Knightrider/Sun pattern */
-void heartbeat_se(void)
-{
-	static unsigned int cnt = 0, period = 0;
-	volatile unsigned short* p = (volatile unsigned short*)PA_LED;
-	static unsigned bit = 0, up = 1;
-
-	cnt += 1;
-	if (cnt < period) {
-		return;
-	}
-
-	cnt = 0;
-
-	/* Go through the points (roughly!):
-	 * f(0)=10, f(1)=16, f(2)=20, f(5)=35,f(inf)->110
-	 */
-	period = 110 - ( (300<<FSHIFT)/
-			 ((avenrun[0]/5) + (3<<FSHIFT)) );
-
-	if (up) {
-		if (bit == 7) {
-			bit--;
-			up=0;
-		} else {
-			bit ++;
-		}
-	} else {
-		if (bit == 0) {
-			bit++;
-			up=1;
-		} else {
-			bit--;
-		}
-	}
-	*p = 1<<(bit+8);
-
-}
diff --git a/arch/sh/boards/se/770x/setup.c b/arch/sh/boards/se/770x/setup.c
index 84f2e4857c6..45cbc36b9fb 100644
--- a/arch/sh/boards/se/770x/setup.c
+++ b/arch/sh/boards/se/770x/setup.c
@@ -7,12 +7,12 @@
  *
  */
 #include <linux/init.h>
+#include <linux/platform_device.h>
 #include <asm/machvec.h>
 #include <asm/se.h>
 #include <asm/io.h>
 #include <asm/smc37c93x.h>
 
-void heartbeat_se(void);
 void init_se_IRQ(void);
 
 /*
@@ -63,6 +63,36 @@ static void __init smsc_setup(char **cmdline_p)
 	outb_p(CONFIG_EXIT, CONFIG_PORT);
 }
 
+static unsigned char heartbeat_bit_pos[] = { 8, 9, 10, 11, 12, 13, 14, 15 };
+
+static struct resource heartbeat_resources[] = {
+	[0] = {
+		.start	= PA_LED,
+		.end	= PA_LED + ARRAY_SIZE(heartbeat_bit_pos) - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+};
+
+static struct platform_device heartbeat_device = {
+	.name		= "heartbeat",
+	.id		= -1,
+	.dev	= {
+		.platform_data	= heartbeat_bit_pos,
+	},
+	.num_resources	= ARRAY_SIZE(heartbeat_resources),
+	.resource	= heartbeat_resources,
+};
+
+static struct platform_device *se_devices[] __initdata = {
+	&heartbeat_device,
+};
+
+static int __init se_devices_setup(void)
+{
+	return platform_add_devices(se_devices, ARRAY_SIZE(se_devices));
+}
+__initcall(se_devices_setup);
+
 /*
  * The Machine Vector
  */
@@ -101,8 +131,5 @@ struct sh_machine_vector mv_se __initmv = {
 	.mv_outsl		= se_outsl,
 
 	.mv_init_irq		= init_se_IRQ,
-#ifdef CONFIG_HEARTBEAT
-	.mv_heartbeat		= heartbeat_se,
-#endif
 };
 ALIAS_MV(se)