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authorsfking@fdwdc.com <sfking@fdwdc.com>2009-06-19 18:11:01 -0700
committerGreg Ungerer <gerg@uclinux.org>2009-09-10 12:01:22 +1000
commitbc25b057fa0a0e4754b7e2524c509874649d11ae (patch)
tree40770e923309ff514def91e8e9adcd6d71c4f81b
parentaf39bb8b07af83b579c90c09ba3943123cdb4132 (diff)
generic GPIO support for the Freescale Coldfire 5206.
Add support for the 5206. Signed-off-by: Steven King <sfking@fdwdc.com> Signed-off-by: Greg Ungerer <gerg@uclinux.org>
-rw-r--r--arch/m68k/include/asm/m5206sim.h10
-rw-r--r--arch/m68knommu/platform/5206/Makefile2
-rw-r--r--arch/m68knommu/platform/5206/gpio.c49
3 files changed, 58 insertions, 3 deletions
diff --git a/arch/m68k/include/asm/m5206sim.h b/arch/m68k/include/asm/m5206sim.h
index 7e3594dea88..7be8a2d3e65 100644
--- a/arch/m68k/include/asm/m5206sim.h
+++ b/arch/m68k/include/asm/m5206sim.h
@@ -85,10 +85,16 @@
#define MCFSIM_PAR 0xcb /* Pin Assignment reg (r/w) */
#endif
-#define MCFSIM_PADDR 0x1c5 /* Parallel Direction (r/w) */
-#define MCFSIM_PADAT 0x1c9 /* Parallel Port Value (r/w) */
+#define MCFSIM_PADDR (MCF_MBAR + 0x1c5) /* Parallel Direction (r/w) */
+#define MCFSIM_PADAT (MCF_MBAR + 0x1c9) /* Parallel Port Value (r/w) */
/*
+ * Generic GPIO
+ */
+#define MCFGPIO_PIN_MAX 8
+#define MCFGPIO_IRQ_VECBASE -1
+#define MCFGPIO_IRQ_MAX -1
+/*
* Some symbol defines for the Parallel Port Pin Assignment Register
*/
#ifdef CONFIG_M5206e
diff --git a/arch/m68knommu/platform/5206/Makefile b/arch/m68knommu/platform/5206/Makefile
index a439d9ab3f2..113c3339006 100644
--- a/arch/m68knommu/platform/5206/Makefile
+++ b/arch/m68knommu/platform/5206/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/5206/gpio.c b/arch/m68knommu/platform/5206/gpio.c
new file mode 100644
index 00000000000..60f779ce165
--- /dev/null
+++ b/arch/m68knommu/platform/5206/gpio.c
@@ -0,0 +1,49 @@
+/*
+ * Coldfire generic GPIO support
+ *
+ * (C) Copyright 2009, Steven King <sfking@fdwdc.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 = 8,
+ },
+ .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);