[PATCH 04/13] generic GPIO support for the Freescale Coldfire 520x.
From: sfking
Date: Fri Jun 19 2009 - 21:19:15 EST
Add support for the 520x.
Signed-off-by: Steven King <sfking@xxxxxxxxx>
---
arch/m68k/include/asm/m520xsim.h | 56 +++++++++
arch/m68knommu/platform/520x/Makefile | 2 +-
arch/m68knommu/platform/520x/gpio.c | 211 +++++++++++++++++++++++++++++++++
3 files changed, 268 insertions(+), 1 deletions(-)
create mode 100644 arch/m68knommu/platform/520x/gpio.c
diff --git a/arch/m68k/include/asm/m520xsim.h b/arch/m68k/include/asm/m520xsim.h
index 49d016e..efdff3b 100644
--- a/arch/m68k/include/asm/m520xsim.h
+++ b/arch/m68k/include/asm/m520xsim.h
@@ -41,6 +41,62 @@
#define MCFSIM_SDCS0 0x000a8110 /* SDRAM Chip Select 0 Configuration */
#define MCFSIM_SDCS1 0x000a8114 /* SDRAM Chip Select 1 Configuration */
+#define MCFEPORT_EPDDR 0xFC088002
+#define MCFEPORT_EPDR 0xFC088004
+#define MCFEPORT_EPPDR 0xFC088005
+
+#define MCFGPIO_PODR_BUSCTL 0xFC0A4000
+#define MCFGPIO_PODR_BE 0xFC0A4001
+#define MCFGPIO_PODR_CS 0xFC0A4002
+#define MCFGPIO_PODR_FECI2C 0xFC0A4003
+#define MCFGPIO_PODR_QSPI 0xFC0A4004
+#define MCFGPIO_PODR_TIMER 0xFC0A4005
+#define MCFGPIO_PODR_UART 0xFC0A4006
+#define MCFGPIO_PODR_FECH 0xFC0A4007
+#define MCFGPIO_PODR_FECL 0xFC0A4008
+
+#define MCFGPIO_PDDR_BUSCTL 0xFC0A400C
+#define MCFGPIO_PDDR_BE 0xFC0A400D
+#define MCFGPIO_PDDR_CS 0xFC0A400E
+#define MCFGPIO_PDDR_FECI2C 0xFC0A400F
+#define MCFGPIO_PDDR_QSPI 0xFC0A4010
+#define MCFGPIO_PDDR_TIMER 0xFC0A4011
+#define MCFGPIO_PDDR_UART 0xFC0A4012
+#define MCFGPIO_PDDR_FECH 0xFC0A4013
+#define MCFGPIO_PDDR_FECL 0xFC0A4014
+
+#define MCFGPIO_PPDSDR_BUSCTL 0xFC0A401A
+#define MCFGPIO_PPDSDR_BE 0xFC0A401B
+#define MCFGPIO_PPDSDR_CS 0xFC0A401C
+#define MCFGPIO_PPDSDR_FECI2C 0xFC0A401D
+#define MCFGPIO_PPDSDR_QSPI 0xFC0A401E
+#define MCFGPIO_PPDSDR_TIMER 0xFC0A401F
+#define MCFGPIO_PPDSDR_UART 0xFC0A4021
+#define MCFGPIO_PPDSDR_FECH 0xFC0A4021
+#define MCFGPIO_PPDSDR_FECL 0xFC0A4022
+
+#define MCFGPIO_PCLRR_BUSCTL 0xFC0A4024
+#define MCFGPIO_PCLRR_BE 0xFC0A4025
+#define MCFGPIO_PCLRR_CS 0xFC0A4026
+#define MCFGPIO_PCLRR_FECI2C 0xFC0A4027
+#define MCFGPIO_PCLRR_QSPI 0xFC0A4028
+#define MCFGPIO_PCLRR_TIMER 0xFC0A4029
+#define MCFGPIO_PCLRR_UART 0xFC0A402A
+#define MCFGPIO_PCLRR_FECH 0xFC0A402B
+#define MCFGPIO_PCLRR_FECL 0xFC0A402C
+/*
+ * Generic GPIO support
+ */
+#define MCFGPIO_PODR MCFGPIO_PODR_BUSCTL
+#define MCFGPIO_PDDR MCFGPIO_PDDR_BUSCTL
+#define MCFGPIO_PPDR MCFGPIO_PPDSDR_BUSCTL
+#define MCFGPIO_SETR MCFGPIO_PPDSDR_BUSCTL
+#define MCFGPIO_CLRR MCFGPIO_PCLRR_BUSCTL
+
+#define MCFGPIO_PIN_MAX 80
+#define MCFGPIO_IRQ_MAX 8
+#define MCFGPIO_IRQ_VECBASE MCFINT_VECBASE
+/****************************************************************************/
#define MCF_GPIO_PAR_UART (0xA4036)
#define MCF_GPIO_PAR_FECI2C (0xA4033)
diff --git a/arch/m68knommu/platform/520x/Makefile b/arch/m68knommu/platform/520x/Makefile
index a50e76a..435ab34 100644
--- a/arch/m68knommu/platform/520x/Makefile
+++ b/arch/m68knommu/platform/520x/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/520x/gpio.c b/arch/m68knommu/platform/520x/gpio.c
new file mode 100644
index 0000000..76fd4f9
--- /dev/null
+++ b/arch/m68knommu/platform/520x/gpio.c
@@ -0,0 +1,211 @@
+/*
+ * Coldfire generic GPIO support
+ *
+ * (C) Copyright 2009, Steven King <sfking@xxxxxxxxx>
+ *
+ * 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 = "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 = 8,
+ .ngpio = 4,
+ },
+ .pddr = MCFGPIO_PDDR_BUSCTL,
+ .podr = MCFGPIO_PODR_BUSCTL,
+ .ppdr = MCFGPIO_PPDSDR_BUSCTL,
+ .setr = MCFGPIO_PPDSDR_BUSCTL,
+ .clrr = MCFGPIO_PCLRR_BUSCTL,
+ },
+ {
+ .gpio_chip = {
+ .label = "BE",
+ .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 = 4,
+ },
+ .pddr = MCFGPIO_PDDR_BE,
+ .podr = MCFGPIO_PODR_BE,
+ .ppdr = MCFGPIO_PPDSDR_BE,
+ .setr = MCFGPIO_PPDSDR_BE,
+ .clrr = MCFGPIO_PCLRR_BE,
+ },
+ {
+ .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 = 25,
+ .ngpio = 3,
+ },
+ .pddr = MCFGPIO_PDDR_CS,
+ .podr = MCFGPIO_PODR_CS,
+ .ppdr = MCFGPIO_PPDSDR_CS,
+ .setr = MCFGPIO_PPDSDR_CS,
+ .clrr = MCFGPIO_PCLRR_CS,
+ },
+ {
+ .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 = 32,
+ .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 = "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 = 40,
+ .ngpio = 4,
+ },
+ .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 = 48,
+ .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 = "UART",
+ .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 = 8,
+ },
+ .pddr = MCFGPIO_PDDR_UART,
+ .podr = MCFGPIO_PODR_UART,
+ .ppdr = MCFGPIO_PPDSDR_UART,
+ .setr = MCFGPIO_PPDSDR_UART,
+ .clrr = MCFGPIO_PCLRR_UART,
+ },
+ {
+ .gpio_chip = {
+ .label = "FECH",
+ .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 = 8,
+ },
+ .pddr = MCFGPIO_PDDR_FECH,
+ .podr = MCFGPIO_PODR_FECH,
+ .ppdr = MCFGPIO_PPDSDR_FECH,
+ .setr = MCFGPIO_PPDSDR_FECH,
+ .clrr = MCFGPIO_PCLRR_FECH,
+ },
+ {
+ .gpio_chip = {
+ .label = "FECL",
+ .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 = 8,
+ },
+ .pddr = MCFGPIO_PDDR_FECL,
+ .podr = MCFGPIO_PODR_FECL,
+ .ppdr = MCFGPIO_PPDSDR_FECL,
+ .setr = MCFGPIO_PPDSDR_FECL,
+ .clrr = MCFGPIO_PCLRR_FECL,
+ },
+};
+
+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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