generic GPIO support for the Freescale Coldfire 523x.

Add support for the 523x.

Signed-off-by: Steven King <sfking@fdwdc.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>

3 files changed, 361 insertions, 1 deletions

diff --git a/arch/m68k/include/asm/m523xsim.h b/arch/m68k/include/asm/m523xsim.h
index 55183b5d..a34894c 100644
--- a/arch/m68k/include/asm/m523xsim.h
+++ b/arch/m68k/include/asm/m523xsim.h
@@ -50,5 +50,82 @@
 #define	MCF_RCR_SWRESET		0x80		/* Software reset bit */
 #define	MCF_RCR_FRCSTOUT	0x40		/* Force external reset */
 
+#define MCFGPIO_PODR_ADDR	(MCF_IPSBAR + 0x100000)
+#define MCFGPIO_PODR_DATAH	(MCF_IPSBAR + 0x100001)
+#define MCFGPIO_PODR_DATAL	(MCF_IPSBAR + 0x100002)
+#define MCFGPIO_PODR_BUSCTL	(MCF_IPSBAR + 0x100003)
+#define MCFGPIO_PODR_BS		(MCF_IPSBAR + 0x100004)
+#define MCFGPIO_PODR_CS		(MCF_IPSBAR + 0x100005)
+#define MCFGPIO_PODR_SDRAM	(MCF_IPSBAR + 0x100006)
+#define MCFGPIO_PODR_FECI2C	(MCF_IPSBAR + 0x100007)
+#define MCFGPIO_PODR_UARTH	(MCF_IPSBAR + 0x100008)
+#define MCFGPIO_PODR_UARTL	(MCF_IPSBAR + 0x100009)
+#define MCFGPIO_PODR_QSPI	(MCF_IPSBAR + 0x10000A)
+#define MCFGPIO_PODR_TIMER	(MCF_IPSBAR + 0x10000B)
+#define MCFGPIO_PODR_ETPU	(MCF_IPSBAR + 0x10000C)
+
+#define MCFGPIO_PDDR_ADDR	(MCF_IPSBAR + 0x100010)
+#define MCFGPIO_PDDR_DATAH	(MCF_IPSBAR + 0x100011)
+#define MCFGPIO_PDDR_DATAL	(MCF_IPSBAR + 0x100012)
+#define MCFGPIO_PDDR_BUSCTL	(MCF_IPSBAR + 0x100013)
+#define MCFGPIO_PDDR_BS		(MCF_IPSBAR + 0x100014)
+#define MCFGPIO_PDDR_CS		(MCF_IPSBAR + 0x100015)
+#define MCFGPIO_PDDR_SDRAM	(MCF_IPSBAR + 0x100016)
+#define MCFGPIO_PDDR_FECI2C	(MCF_IPSBAR + 0x100017)
+#define MCFGPIO_PDDR_UARTH	(MCF_IPSBAR + 0x100018)
+#define MCFGPIO_PDDR_UARTL	(MCF_IPSBAR + 0x100019)
+#define MCFGPIO_PDDR_QSPI	(MCF_IPSBAR + 0x10001A)
+#define MCFGPIO_PDDR_TIMER	(MCF_IPSBAR + 0x10001B)
+#define MCFGPIO_PDDR_ETPU	(MCF_IPSBAR + 0x10001C)
+
+#define MCFGPIO_PPDSDR_ADDR	(MCF_IPSBAR + 0x100020)
+#define MCFGPIO_PPDSDR_DATAH	(MCF_IPSBAR + 0x100021)
+#define MCFGPIO_PPDSDR_DATAL	(MCF_IPSBAR + 0x100022)
+#define MCFGPIO_PPDSDR_BUSCTL	(MCF_IPSBAR + 0x100023)
+#define MCFGPIO_PPDSDR_BS	(MCF_IPSBAR + 0x100024)
+#define MCFGPIO_PPDSDR_CS	(MCF_IPSBAR + 0x100025)
+#define MCFGPIO_PPDSDR_SDRAM	(MCF_IPSBAR + 0x100026)
+#define MCFGPIO_PPDSDR_FECI2C	(MCF_IPSBAR + 0x100027)
+#define MCFGPIO_PPDSDR_UARTH	(MCF_IPSBAR + 0x100028)
+#define MCFGPIO_PPDSDR_UARTL	(MCF_IPSBAR + 0x100029)
+#define MCFGPIO_PPDSDR_QSPI	(MCF_IPSBAR + 0x10002A)
+#define MCFGPIO_PPDSDR_TIMER	(MCF_IPSBAR + 0x10002B)
+#define MCFGPIO_PPDSDR_ETPU	(MCF_IPSBAR + 0x10002C)
+
+#define MCFGPIO_PCLRR_ADDR	(MCF_IPSBAR + 0x100030)
+#define MCFGPIO_PCLRR_DATAH	(MCF_IPSBAR + 0x100031)
+#define MCFGPIO_PCLRR_DATAL	(MCF_IPSBAR + 0x100032)
+#define MCFGPIO_PCLRR_BUSCTL	(MCF_IPSBAR + 0x100033)
+#define MCFGPIO_PCLRR_BS	(MCF_IPSBAR + 0x100034)
+#define MCFGPIO_PCLRR_CS	(MCF_IPSBAR + 0x100035)
+#define MCFGPIO_PCLRR_SDRAM	(MCF_IPSBAR + 0x100036)
+#define MCFGPIO_PCLRR_FECI2C	(MCF_IPSBAR + 0x100037)
+#define MCFGPIO_PCLRR_UARTH	(MCF_IPSBAR + 0x100038)
+#define MCFGPIO_PCLRR_UARTL	(MCF_IPSBAR + 0x100039)
+#define MCFGPIO_PCLRR_QSPI	(MCF_IPSBAR + 0x10003A)
+#define MCFGPIO_PCLRR_TIMER	(MCF_IPSBAR + 0x10003B)
+#define MCFGPIO_PCLRR_ETPU	(MCF_IPSBAR + 0x10003C)
+
+/*
+ * EPort
+ */
+
+#define MCFEPORT_EPDDR		(MCF_IPSBAR + 0x130002)
+#define MCFEPORT_EPDR		(MCF_IPSBAR + 0x130004)
+#define MCFEPORT_EPPDR		(MCF_IPSBAR + 0x130005)
+
+/*
+ * Generic GPIO support
+ */
+#define MCFGPIO_PODR			MCFGPIO_PODR_ADDR
+#define MCFGPIO_PDDR			MCFGPIO_PDDR_ADDR
+#define MCFGPIO_PPDR			MCFGPIO_PPDSDR_ADDR
+#define MCFGPIO_SETR			MCFGPIO_PPDSDR_ADDR
+#define MCFGPIO_CLRR			MCFGPIO_PCLRR_ADDR
+
+#define MCFGPIO_PIN_MAX			107
+#define MCFGPIO_IRQ_MAX			8
+#define MCFGPIO_IRQ_VECBASE		MCFINT_VECBASE
+
 /****************************************************************************/
 #endif	/* m523xsim_h */
diff --git a/arch/m68knommu/platform/523x/Makefile b/arch/m68knommu/platform/523x/Makefile
index 5694d593..b8f9b45 100644
--- a/arch/m68knommu/platform/523x/Makefile
+++ b/arch/m68knommu/platform/523x/Makefile
@@ -14,4 +14,4 @@
 
 asflags-$(CONFIG_FULLDEBUG) := -DDEBUGGER_COMPATIBLE_CACHE=1
 
-obj-y := config.o
+obj-y := config.o gpio.o
diff --git a/arch/m68knommu/platform/523x/gpio.c b/arch/m68knommu/platform/523x/gpio.c
new file mode 100644
index 0000000..f02840d
--- /dev/null
+++ b/arch/m68knommu/platform/523x/gpio.c
@@ -0,0 +1,283 @@
+/*
+ * 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			= "PIRQ",
+			.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				= MCFEPORT_EPDDR,
+		.podr				= MCFEPORT_EPDR,
+		.ppdr				= MCFEPORT_EPPDR,
+	},
+	{
+		.gpio_chip			= {
+			.label			= "ADDR",
+			.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_fast,
+			.base			= 13,
+			.ngpio			= 3,
+		},
+		.pddr				= MCFGPIO_PDDR_ADDR,
+		.podr				= MCFGPIO_PODR_ADDR,
+		.ppdr				= MCFGPIO_PPDSDR_ADDR,
+		.setr				= MCFGPIO_PPDSDR_ADDR,
+		.clrr				= MCFGPIO_PCLRR_ADDR,
+	},
+	{
+		.gpio_chip			= {
+			.label			= "DATAH",
+			.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_fast,
+			.base			= 16,
+			.ngpio			= 8,
+		},
+		.pddr				= MCFGPIO_PDDR_DATAH,
+		.podr				= MCFGPIO_PODR_DATAH,
+		.ppdr				= MCFGPIO_PPDSDR_DATAH,
+		.setr				= MCFGPIO_PPDSDR_DATAH,
+		.clrr				= MCFGPIO_PCLRR_DATAH,
+	},
+	{
+		.gpio_chip			= {
+			.label			= "DATAL",
+			.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_fast,
+			.base			= 24,
+			.ngpio			= 8,
+		},
+		.pddr				= MCFGPIO_PDDR_DATAL,
+		.podr				= MCFGPIO_PODR_DATAL,
+		.ppdr				= MCFGPIO_PPDSDR_DATAL,
+		.setr				= MCFGPIO_PPDSDR_DATAL,
+		.clrr				= MCFGPIO_PCLRR_DATAL,
+	},
+	{
+		.gpio_chip			= {
+			.label			= "BUSCTL",
+			.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_fast,
+			.base			= 32,
+			.ngpio			= 8,
+		},
+		.pddr				= MCFGPIO_PDDR_BUSCTL,
+		.podr				= MCFGPIO_PODR_BUSCTL,
+		.ppdr				= MCFGPIO_PPDSDR_BUSCTL,
+		.setr				= MCFGPIO_PPDSDR_BUSCTL,
+		.clrr				= MCFGPIO_PCLRR_BUSCTL,
+	},
+	{
+		.gpio_chip			= {
+			.label			= "BS",
+			.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_fast,
+			.base			= 40,
+			.ngpio			= 4,
+		},
+		.pddr				= MCFGPIO_PDDR_BS,
+		.podr				= MCFGPIO_PODR_BS,
+		.ppdr				= MCFGPIO_PPDSDR_BS,
+		.setr				= MCFGPIO_PPDSDR_BS,
+		.clrr				= MCFGPIO_PCLRR_BS,
+	},
+	{
+		.gpio_chip			= {
+			.label			= "CS",
+			.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_fast,
+			.base			= 49,
+			.ngpio			= 7,
+		},
+		.pddr				= MCFGPIO_PDDR_CS,
+		.podr				= MCFGPIO_PODR_CS,
+		.ppdr				= MCFGPIO_PPDSDR_CS,
+		.setr				= MCFGPIO_PPDSDR_CS,
+		.clrr				= MCFGPIO_PCLRR_CS,
+	},
+	{
+		.gpio_chip			= {
+			.label			= "SDRAM",
+			.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_fast,
+			.base			= 56,
+			.ngpio			= 6,
+		},
+		.pddr				= MCFGPIO_PDDR_SDRAM,
+		.podr				= MCFGPIO_PODR_SDRAM,
+		.ppdr				= MCFGPIO_PPDSDR_SDRAM,
+		.setr				= MCFGPIO_PPDSDR_SDRAM,
+		.clrr				= MCFGPIO_PCLRR_SDRAM,
+	},
+	{
+		.gpio_chip			= {
+			.label			= "FECI2C",
+			.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_fast,
+			.base			= 64,
+			.ngpio			= 4,
+		},
+		.pddr				= MCFGPIO_PDDR_FECI2C,
+		.podr				= MCFGPIO_PODR_FECI2C,
+		.ppdr				= MCFGPIO_PPDSDR_FECI2C,
+		.setr				= MCFGPIO_PPDSDR_FECI2C,
+		.clrr				= MCFGPIO_PCLRR_FECI2C,
+	},
+	{
+		.gpio_chip			= {
+			.label			= "UARTH",
+			.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_fast,
+			.base			= 72,
+			.ngpio			= 2,
+		},
+		.pddr				= MCFGPIO_PDDR_UARTH,
+		.podr				= MCFGPIO_PODR_UARTH,
+		.ppdr				= MCFGPIO_PPDSDR_UARTH,
+		.setr				= MCFGPIO_PPDSDR_UARTH,
+		.clrr				= MCFGPIO_PCLRR_UARTH,
+	},
+	{
+		.gpio_chip			= {
+			.label			= "UARTL",
+			.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_fast,
+			.base			= 80,
+			.ngpio			= 8,
+		},
+		.pddr				= MCFGPIO_PDDR_UARTL,
+		.podr				= MCFGPIO_PODR_UARTL,
+		.ppdr				= MCFGPIO_PPDSDR_UARTL,
+		.setr				= MCFGPIO_PPDSDR_UARTL,
+		.clrr				= MCFGPIO_PCLRR_UARTL,
+	},
+	{
+		.gpio_chip			= {
+			.label			= "QSPI",
+			.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_fast,
+			.base			= 88,
+			.ngpio			= 5,
+		},
+		.pddr				= MCFGPIO_PDDR_QSPI,
+		.podr				= MCFGPIO_PODR_QSPI,
+		.ppdr				= MCFGPIO_PPDSDR_QSPI,
+		.setr				= MCFGPIO_PPDSDR_QSPI,
+		.clrr				= MCFGPIO_PCLRR_QSPI,
+	},
+	{
+		.gpio_chip			= {
+			.label			= "TIMER",
+			.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_fast,
+			.base			= 96,
+			.ngpio			= 4,
+		},
+		.pddr				= MCFGPIO_PDDR_TIMER,
+		.podr				= MCFGPIO_PODR_TIMER,
+		.ppdr				= MCFGPIO_PPDSDR_TIMER,
+		.setr				= MCFGPIO_PPDSDR_TIMER,
+		.clrr				= MCFGPIO_PCLRR_TIMER,
+	},
+	{
+		.gpio_chip			= {
+			.label			= "ETPU",
+			.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_fast,
+			.base			= 104,
+			.ngpio			= 3,
+		},
+		.pddr				= MCFGPIO_PDDR_ETPU,
+		.podr				= MCFGPIO_PODR_ETPU,
+		.ppdr				= MCFGPIO_PPDSDR_ETPU,
+		.setr				= MCFGPIO_PPDSDR_ETPU,
+		.clrr				= MCFGPIO_PCLRR_ETPU,
+	},
+};
+
+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);