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Date: Fri, 19 Jun 2009 18:11:07 -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 08/13] generic GPIO support for the Freescale Coldfire 5272.
Add support for the 5272.
Signed-off-by: Steven King <sfking@...dc.com>
---
arch/m68k/include/asm/m5272sim.h | 24 ++++++----
arch/m68knommu/platform/5272/Makefile | 2 +-
arch/m68knommu/platform/5272/gpio.c | 81 +++++++++++++++++++++++++++++++++
3 files changed, 97 insertions(+), 10 deletions(-)
create mode 100644 arch/m68knommu/platform/5272/gpio.c
diff --git a/arch/m68k/include/asm/m5272sim.h b/arch/m68k/include/asm/m5272sim.h
index 6217edc..0665ba1 100644
--- a/arch/m68k/include/asm/m5272sim.h
+++ b/arch/m68k/include/asm/m5272sim.h
@@ -63,16 +63,22 @@
#define MCFSIM_DCMR1 0x5c /* DRAM 1 Mask reg (r/w) */
#define MCFSIM_DCCR1 0x63 /* DRAM 1 Control reg (r/w) */
-#define MCFSIM_PACNT 0x80 /* Port A Control (r/w) */
-#define MCFSIM_PADDR 0x84 /* Port A Direction (r/w) */
-#define MCFSIM_PADAT 0x86 /* Port A Data (r/w) */
-#define MCFSIM_PBCNT 0x88 /* Port B Control (r/w) */
-#define MCFSIM_PBDDR 0x8c /* Port B Direction (r/w) */
-#define MCFSIM_PBDAT 0x8e /* Port B Data (r/w) */
-#define MCFSIM_PCDDR 0x94 /* Port C Direction (r/w) */
-#define MCFSIM_PCDAT 0x96 /* Port C Data (r/w) */
-#define MCFSIM_PDCNT 0x98 /* Port D Control (r/w) */
+#define MCFSIM_PACNT (MCF_MBAR + 0x80) /* Port A Control (r/w) */
+#define MCFSIM_PADDR (MCF_MBAR + 0x84) /* Port A Direction (r/w) */
+#define MCFSIM_PADAT (MCF_MBAR + 0x86) /* Port A Data (r/w) */
+#define MCFSIM_PBCNT (MCF_MBAR + 0x88) /* Port B Control (r/w) */
+#define MCFSIM_PBDDR (MCF_MBAR + 0x8c) /* Port B Direction (r/w) */
+#define MCFSIM_PBDAT (MCF_MBAR + 0x8e) /* Port B Data (r/w) */
+#define MCFSIM_PCDDR (MCF_MBAR + 0x94) /* Port C Direction (r/w) */
+#define MCFSIM_PCDAT (MCF_MBAR + 0x96) /* Port C Data (r/w) */
+#define MCFSIM_PDCNT (MCF_MBAR + 0x98) /* Port D Control (r/w) */
+/*
+ * Generic GPIO support
+ */
+#define MCFGPIO_PIN_MAX 48
+#define MCFGPIO_IRQ_MAX -1
+#define MCFGPIO_IRQ_VECBASE -1
/****************************************************************************/
#endif /* m5272sim_h */
diff --git a/arch/m68knommu/platform/5272/Makefile b/arch/m68knommu/platform/5272/Makefile
index 26135d9..3d90e6d 100644
--- a/arch/m68knommu/platform/5272/Makefile
+++ b/arch/m68knommu/platform/5272/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/5272/gpio.c b/arch/m68knommu/platform/5272/gpio.c
new file mode 100644
index 0000000..1542dd5
--- /dev/null
+++ b/arch/m68knommu/platform/5272/gpio.c
@@ -0,0 +1,81 @@
+/*
+ * 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 = "PA",
+ .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,
+ },
+ {
+ .gpio_chip = {
+ .label = "PB",
+ .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,
+ .base = 16,
+ .ngpio = 16,
+ },
+ .pddr = MCFSIM_PBDDR,
+ .podr = MCFSIM_PBDAT,
+ .ppdr = MCFSIM_PBDAT,
+ },
+ {
+ .gpio_chip = {
+ .label = "PC",
+ .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,
+ .base = 32,
+ .ngpio = 16,
+ },
+ .pddr = MCFSIM_PCDDR,
+ .podr = MCFSIM_PCDAT,
+ .ppdr = MCFSIM_PCDAT,
+ },
+};
+
+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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