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Message-Id: <1245460272-4329-13-git-send-email-sfking@fdwdc.com>
Date: Fri, 19 Jun 2009 18:11:11 -0700
From: sfking@...dc.com
To: linux-kernel@...r.kernel.org
Cc: uclinux-dev@...inux.org, linux-m68k@...r.kernel.org,
gerg@...pgear.com, Steven King <sfking@...dc.com>
Subject: [PATCH 12/13] generic GPIO support for the Freescale Coldfire 5407.
Add support for the 5407.
Signed-off-by: Steven King <sfking@...dc.com>
---
arch/m68k/include/asm/m5407sim.h | 10 +++++-
arch/m68knommu/platform/5407/Makefile | 2 +-
arch/m68knommu/platform/5407/gpio.c | 49 +++++++++++++++++++++++++++++++++
3 files changed, 58 insertions(+), 3 deletions(-)
create mode 100644 arch/m68knommu/platform/5407/gpio.c
diff --git a/arch/m68k/include/asm/m5407sim.h b/arch/m68k/include/asm/m5407sim.h
index cc22c4a..2519475 100644
--- a/arch/m68k/include/asm/m5407sim.h
+++ b/arch/m68k/include/asm/m5407sim.h
@@ -73,9 +73,15 @@
#define MCFSIM_DACR1 0x110 /* DRAM 1 Addr and Ctrl (r/w) */
#define MCFSIM_DMR1 0x114 /* DRAM 1 Mask reg (r/w) */
-#define MCFSIM_PADDR 0x244 /* Parallel Direction (r/w) */
-#define MCFSIM_PADAT 0x248 /* Parallel Data (r/w) */
+#define MCFSIM_PADDR (MCF_MBAR + 0x244)
+#define MCFSIM_PADAT (MCF_MBAR + 0x248)
+/*
+ * Generic GPIO support
+ */
+#define MCFGPIO_PIN_MAX 16
+#define MCFGPIO_IRQ_MAX -1
+#define MCFGPIO_IRQ_VECBASE -1
/*
* Some symbol defines for the above...
diff --git a/arch/m68knommu/platform/5407/Makefile b/arch/m68knommu/platform/5407/Makefile
index e6035e7..dee62c5 100644
--- a/arch/m68knommu/platform/5407/Makefile
+++ b/arch/m68knommu/platform/5407/Makefile
@@ -14,5 +14,5 @@
asflags-$(CONFIG_FULLDEBUG) := -DDEBUGGER_COMPATIBLE_CACHE=1
-obj-y := config.o
+obj-y := config.o gpio.o
diff --git a/arch/m68knommu/platform/5407/gpio.c b/arch/m68knommu/platform/5407/gpio.c
new file mode 100644
index 0000000..7511068
--- /dev/null
+++ b/arch/m68knommu/platform/5407/gpio.c
@@ -0,0 +1,49 @@
+/*
+ * Coldfire generic GPIO support
+ *
+ * (C) Copyright 2009, Steven King <sfking@...dc.com>
+ *
+ * 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; version 2 of the License.
+ *
+ * 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.
+*/
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+
+#include <asm/coldfire.h>
+#include <asm/mcfsim.h>
+#include <asm/mcfgpio.h>
+
+static struct mcf_gpio_chip mcf_gpio_chips[] = {
+ {
+ .gpio_chip = {
+ .label = "PP",
+ .request = mcf_gpio_request,
+ .free = mcf_gpio_free,
+ .direction_input = mcf_gpio_direction_input,
+ .direction_output = mcf_gpio_direction_output,
+ .get = mcf_gpio_get_value,
+ .set = mcf_gpio_set_value,
+ .ngpio = 16,
+ },
+ .pddr = MCFSIM_PADDR,
+ .podr = MCFSIM_PADAT,
+ .ppdr = MCFSIM_PADAT,
+ },
+};
+
+static int __init mcf_gpio_init(void)
+{
+ unsigned i = 0;
+ while (i < ARRAY_SIZE(mcf_gpio_chips))
+ (void)gpiochip_add((struct gpio_chip *)&mcf_gpio_chips[i++]);
+ return 0;
+}
+
+core_initcall(mcf_gpio_init);
--
1.5.6.5
--
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