ARM: OMAP: abstract debug card setup (smc, leds)

Additional cleanup for debug boards on H2/P2/H3/H4:  move the init
code that's not board-specific into a new file where it can be easily
shared between all the different boards (avoiding code duplication,
and making it easier to support more devices).  Make H4 use that.

This should be easy to drop in to the OMAP1 boards using these debug
cards; the only difference seems to be that the p2 does an extra reset
of the smc using the fpga (probably all boards could do that, if it's
necessary) and doesn't use the gpio mux or request APIs.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>

3 files changed, 94 insertions, 2 deletions

diff --git a/arch/arm/plat-omap/Kconfig b/arch/arm/plat-omap/Kconfig
index cfc69f3842fd..c1f7e5a819a3 100644
--- a/arch/arm/plat-omap/Kconfig
+++ b/arch/arm/plat-omap/Kconfig
@@ -20,10 +20,15 @@ endchoice
 
 comment "OMAP Feature Selections"
 
-config OMAP_DEBUG_LEDS
+config OMAP_DEBUG_DEVICES
         bool
         help
-          For debug card leds on TI reference boards.
+          For debug cards on TI reference boards.
+
+config OMAP_DEBUG_LEDS
+        bool
+        depends on OMAP_DEBUG_DEVICES
+        default y if LEDS || LEDS_OMAP_DEBUG
 
 config OMAP_RESET_CLOCKS
         bool "Reset unused clocks during boot"
diff --git a/arch/arm/plat-omap/Makefile b/arch/arm/plat-omap/Makefile
index 41a3c1cf3bd4..2549129aabc6 100644
--- a/arch/arm/plat-omap/Makefile
+++ b/arch/arm/plat-omap/Makefile
@@ -17,4 +17,5 @@ obj-$(CONFIG_ARCH_OMAP16XX) += ocpi.o
 
 obj-$(CONFIG_CPU_FREQ) += cpu-omap.o
 obj-$(CONFIG_OMAP_DM_TIMER) += dmtimer.o
+obj-$(CONFIG_OMAP_DEBUG_DEVICES) += debug-devices.o
 obj-$(CONFIG_OMAP_DEBUG_LEDS) += debug-leds.o
diff --git a/arch/arm/plat-omap/debug-devices.c b/arch/arm/plat-omap/debug-devices.c
new file mode 100644
index 000000000000..83a5f8b91857
--- /dev/null
+++ b/arch/arm/plat-omap/debug-devices.c
@@ -0,0 +1,86 @@
+/*
+ * linux/arch/arm/plat-omap/debug-devices.c
+ *
+ * Copyright (C) 2005 Nokia Corporation
+ * Modified from mach-omap2/board-h4.c
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+
+#include <asm/hardware.h>
+#include <asm/io.h>
+
+#include <asm/arch/board.h>
+#include <asm/arch/gpio.h>
+
+
+/* Many OMAP development platforms reuse the same "debug board"; these
+ * platforms include H2, H3, H4, and Perseus2.
+ */
+
+static struct resource smc91x_resources[] = {
+        [0] = {
+                .flags  = IORESOURCE_MEM,
+        },
+        [1] = {
+                .flags  = IORESOURCE_IRQ,
+        },
+};
+
+static struct platform_device smc91x_device = {
+        .name           = "smc91x",
+        .id             = -1,
+        .num_resources  = ARRAY_SIZE(smc91x_resources),
+        .resource       = smc91x_resources,
+};
+
+static struct resource led_resources[] = {
+        [0] = {
+                .flags  = IORESOURCE_MEM,
+        },
+};
+
+static struct platform_device led_device = {
+        .name           = "omap_dbg_led",
+        .id             = -1,
+        .num_resources  = ARRAY_SIZE(led_resources),
+        .resource       = led_resources,
+};
+
+static struct platform_device *debug_devices[] __initdata = {
+        &smc91x_device,
+        &led_device,
+        /* ps2 kbd + mouse ports */
+        /* 4 extra uarts */
+        /* 6 input dip switches */
+        /* 8 output pins */
+};
+
+int __init debug_card_init(u32 addr, unsigned gpio)
+{
+        int     status;
+
+        smc91x_resources[0].start = addr + 0x300;
+        smc91x_resources[0].end   = addr + 0x30f;
+
+        smc91x_resources[1].start = OMAP_GPIO_IRQ(gpio);
+        smc91x_resources[1].end   = OMAP_GPIO_IRQ(gpio);
+
+        status = omap_request_gpio(gpio);
+        if (status < 0) {
+                printk(KERN_ERR "GPIO%d unavailable for smc91x IRQ\n", gpio);
+                return status;
+        }
+        omap_set_gpio_direction(gpio, 1);
+
+        led_resources[0].start = addr;
+        led_resources[0].end   = addr + SZ_4K - 1;
+
+        return platform_add_devices(debug_devices, ARRAY_SIZE(debug_devices));
+}