summaryrefslogtreecommitdiffstats
path: root/kernel/arch/arm/mach-omap1/gpio15xx.c
diff options
context:
space:
mode:
Diffstat (limited to 'kernel/arch/arm/mach-omap1/gpio15xx.c')
-rw-r--r--kernel/arch/arm/mach-omap1/gpio15xx.c123
1 files changed, 123 insertions, 0 deletions
diff --git a/kernel/arch/arm/mach-omap1/gpio15xx.c b/kernel/arch/arm/mach-omap1/gpio15xx.c
new file mode 100644
index 000000000..312a0924d
--- /dev/null
+++ b/kernel/arch/arm/mach-omap1/gpio15xx.c
@@ -0,0 +1,123 @@
+/*
+ * OMAP15xx specific gpio init
+ *
+ * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * Author:
+ * Charulatha V <charu@ti.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.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/gpio.h>
+#include <linux/platform_data/gpio-omap.h>
+
+#include <mach/irqs.h>
+
+#define OMAP1_MPUIO_VBASE OMAP1_MPUIO_BASE
+#define OMAP1510_GPIO_BASE 0xFFFCE000
+
+/* gpio1 */
+static struct resource omap15xx_mpu_gpio_resources[] = {
+ {
+ .start = OMAP1_MPUIO_VBASE,
+ .end = OMAP1_MPUIO_VBASE + SZ_2K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = INT_MPUIO,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct omap_gpio_reg_offs omap15xx_mpuio_regs = {
+ .revision = USHRT_MAX,
+ .direction = OMAP_MPUIO_IO_CNTL,
+ .datain = OMAP_MPUIO_INPUT_LATCH,
+ .dataout = OMAP_MPUIO_OUTPUT,
+ .irqstatus = OMAP_MPUIO_GPIO_INT,
+ .irqenable = OMAP_MPUIO_GPIO_MASKIT,
+ .irqenable_inv = true,
+ .irqctrl = OMAP_MPUIO_GPIO_INT_EDGE,
+};
+
+static struct omap_gpio_platform_data omap15xx_mpu_gpio_config = {
+ .is_mpuio = true,
+ .bank_width = 16,
+ .bank_stride = 1,
+ .regs = &omap15xx_mpuio_regs,
+};
+
+static struct platform_device omap15xx_mpu_gpio = {
+ .name = "omap_gpio",
+ .id = 0,
+ .dev = {
+ .platform_data = &omap15xx_mpu_gpio_config,
+ },
+ .num_resources = ARRAY_SIZE(omap15xx_mpu_gpio_resources),
+ .resource = omap15xx_mpu_gpio_resources,
+};
+
+/* gpio2 */
+static struct resource omap15xx_gpio_resources[] = {
+ {
+ .start = OMAP1510_GPIO_BASE,
+ .end = OMAP1510_GPIO_BASE + SZ_2K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = INT_GPIO_BANK1,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct omap_gpio_reg_offs omap15xx_gpio_regs = {
+ .revision = USHRT_MAX,
+ .direction = OMAP1510_GPIO_DIR_CONTROL,
+ .datain = OMAP1510_GPIO_DATA_INPUT,
+ .dataout = OMAP1510_GPIO_DATA_OUTPUT,
+ .irqstatus = OMAP1510_GPIO_INT_STATUS,
+ .irqenable = OMAP1510_GPIO_INT_MASK,
+ .irqenable_inv = true,
+ .irqctrl = OMAP1510_GPIO_INT_CONTROL,
+ .pinctrl = OMAP1510_GPIO_PIN_CONTROL,
+};
+
+static struct omap_gpio_platform_data omap15xx_gpio_config = {
+ .bank_width = 16,
+ .regs = &omap15xx_gpio_regs,
+};
+
+static struct platform_device omap15xx_gpio = {
+ .name = "omap_gpio",
+ .id = 1,
+ .dev = {
+ .platform_data = &omap15xx_gpio_config,
+ },
+ .num_resources = ARRAY_SIZE(omap15xx_gpio_resources),
+ .resource = omap15xx_gpio_resources,
+};
+
+/*
+ * omap15xx_gpio_init needs to be done before
+ * machine_init functions access gpio APIs.
+ * Hence omap15xx_gpio_init is a postcore_initcall.
+ */
+static int __init omap15xx_gpio_init(void)
+{
+ if (!cpu_is_omap15xx())
+ return -EINVAL;
+
+ platform_device_register(&omap15xx_mpu_gpio);
+ platform_device_register(&omap15xx_gpio);
+
+ return 0;
+}
+postcore_initcall(omap15xx_gpio_init);