ARM: OMAP3: Add support for the Gumstix Overo board (rev 3) (eba2645a) · Commits · e / devices / android_kernel_teracube_2e

arch/arm/mach-omap2/Kconfig

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		@@ -48,3 +48,6 @@ config MACH_OMAP3_BEAGLE
		bool "OMAP3 BEAGLE board"
		depends on ARCH_OMAP3 && ARCH_OMAP34XX

		config MACH_OVERO
		bool "Gumstix Overo board"
		depends on ARCH_OMAP3 && ARCH_OMAP34XX

arch/arm/mach-omap2/Makefile

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		@@ -30,4 +30,5 @@ obj-$(CONFIG_MACH_OMAP_H4) += board-h4.o
		obj-$(CONFIG_MACH_OMAP_2430SDP) += board-2430sdp.o
		obj-$(CONFIG_MACH_OMAP_APOLLON) += board-apollon.o
		obj-$(CONFIG_MACH_OMAP3_BEAGLE) += board-omap3beagle.o
		obj-$(CONFIG_MACH_OVERO) += board-overo.o

arch/arm/mach-omap2/board-overo.c

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		/*
		* board-overo.c (Gumstix Overo)
		*
		* Initial code: Steve Sakoman <steve@sakoman.com>
		*
		* This program is free software; you can redistribute it and/or
		* modify it under the terms of the GNU General Public License
		* version 2 as published by the Free Software Foundation.
		*
		* 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.
		*
		* You should have received a copy of the GNU General Public License
		* along with this program; if not, write to the Free Software
		* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
		* 02110-1301 USA
		*
		*/

		#include <linux/clk.h>
		#include <linux/delay.h>
		#include <linux/err.h>
		#include <linux/init.h>
		#include <linux/io.h>
		#include <linux/kernel.h>
		#include <linux/platform_device.h>

		#include <linux/mtd/mtd.h>
		#include <linux/mtd/nand.h>
		#include <linux/mtd/partitions.h>

		#include <asm/mach-types.h>
		#include <asm/mach/arch.h>
		#include <asm/mach/flash.h>
		#include <asm/mach/map.h>

		#include <mach/board-overo.h>
		#include <mach/board.h>
		#include <mach/common.h>
		#include <mach/gpio.h>
		#include <mach/gpmc.h>
		#include <mach/hardware.h>
		#include <mach/nand.h>

		#define NAND_BLOCK_SIZE SZ_128K
		#define GPMC_CS0_BASE 0x60
		#define GPMC_CS_SIZE 0x30

		static struct mtd_partition overo_nand_partitions[] = {
		{
		.name = "xloader",
		.offset = 0, /* Offset = 0x00000 */
		.size = 4 * NAND_BLOCK_SIZE,
		.mask_flags = MTD_WRITEABLE
		},
		{
		.name = "uboot",
		.offset = MTDPART_OFS_APPEND, /* Offset = 0x80000 */
		.size = 14 * NAND_BLOCK_SIZE,
		},
		{
		.name = "uboot environment",
		.offset = MTDPART_OFS_APPEND, /* Offset = 0x240000 */
		.size = 2 * NAND_BLOCK_SIZE,
		},
		{
		.name = "linux",
		.offset = MTDPART_OFS_APPEND, /* Offset = 0x280000 */
		.size = 32 * NAND_BLOCK_SIZE,
		},
		{
		.name = "rootfs",
		.offset = MTDPART_OFS_APPEND, /* Offset = 0x680000 */
		.size = MTDPART_SIZ_FULL,
		},
		};

		static struct omap_nand_platform_data overo_nand_data = {
		.parts = overo_nand_partitions,
		.nr_parts = ARRAY_SIZE(overo_nand_partitions),
		.dma_channel = -1, /* disable DMA in OMAP NAND driver */
		};

		static struct resource overo_nand_resource = {
		.flags = IORESOURCE_MEM,
		};

		static struct platform_device overo_nand_device = {
		.name = "omap2-nand",
		.id = -1,
		.dev = {
		.platform_data = &overo_nand_data,
		},
		.num_resources = 1,
		.resource = &overo_nand_resource,
		};


		static void __init overo_flash_init(void)
		{
		u8 cs = 0;
		u8 nandcs = GPMC_CS_NUM + 1;

		u32 gpmc_base_add = OMAP34XX_GPMC_VIRT;

		/* find out the chip-select on which NAND exists */
		while (cs < GPMC_CS_NUM) {
		u32 ret = 0;
		ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);

		if ((ret & 0xC00) == 0x800) {
		printk(KERN_INFO "Found NAND on CS%d\n", cs);
		if (nandcs > GPMC_CS_NUM)
		nandcs = cs;
		}
		cs++;
		}

		if (nandcs > GPMC_CS_NUM) {
		printk(KERN_INFO "NAND: Unable to find configuration "
		"in GPMC\n ");
		return;
		}

		if (nandcs < GPMC_CS_NUM) {
		overo_nand_data.cs = nandcs;
		overo_nand_data.gpmc_cs_baseaddr = (void *)
		(gpmc_base_add + GPMC_CS0_BASE + nandcs * GPMC_CS_SIZE);
		overo_nand_data.gpmc_baseaddr = (void *) (gpmc_base_add);

		printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
		if (platform_device_register(&overo_nand_device) < 0)
		printk(KERN_ERR "Unable to register NAND device\n");
		}
		}
		static struct omap_uart_config overo_uart_config __initdata = {
		.enabled_uarts = ((1 << 0) \| (1 << 1) \| (1 << 2)),
		};

		static int __init overo_i2c_init(void)
		{
		/* i2c2 pins are used for gpio */
		omap_register_i2c_bus(3, 400, NULL, 0);
		return 0;
		}

		static void __init overo_init_irq(void)
		{
		omap2_init_common_hw();
		omap_init_irq();
		omap_gpio_init();
		}

		static struct platform_device overo_lcd_device = {
		.name = "overo_lcd",
		.id = -1,
		};

		static struct omap_lcd_config overo_lcd_config __initdata = {
		.ctrl_name = "internal",
		};

		static struct omap_board_config_kernel overo_config[] __initdata = {
		{ OMAP_TAG_UART, &overo_uart_config },
		{ OMAP_TAG_LCD, &overo_lcd_config },
		};

		static struct platform_device *overo_devices[] __initdata = {
		&overo_lcd_device,
		};

		static void __init overo_init(void)
		{
		overo_i2c_init();
		platform_add_devices(overo_devices, ARRAY_SIZE(overo_devices));
		omap_board_config = overo_config;
		omap_board_config_size = ARRAY_SIZE(overo_config);
		omap_serial_init();
		overo_flash_init();

		if ((gpio_request(OVERO_GPIO_W2W_NRESET,
		"OVERO_GPIO_W2W_NRESET") == 0) &&
		(gpio_direction_output(OVERO_GPIO_W2W_NRESET, 1) == 0)) {
		gpio_export(OVERO_GPIO_W2W_NRESET, 0);
		gpio_set_value(OVERO_GPIO_W2W_NRESET, 0);
		udelay(10);
		gpio_set_value(OVERO_GPIO_W2W_NRESET, 1);
		} else {
		printk(KERN_ERR "could not obtain gpio for "
		"OVERO_GPIO_W2W_NRESET\n");
		}

		if ((gpio_request(OVERO_GPIO_BT_XGATE, "OVERO_GPIO_BT_XGATE") == 0) &&
		(gpio_direction_output(OVERO_GPIO_BT_XGATE, 0) == 0))
		gpio_export(OVERO_GPIO_BT_XGATE, 0);
		else
		printk(KERN_ERR "could not obtain gpio for OVERO_GPIO_BT_XGATE\n");

		if ((gpio_request(OVERO_GPIO_BT_NRESET, "OVERO_GPIO_BT_NRESET") == 0) &&
		(gpio_direction_output(OVERO_GPIO_BT_NRESET, 1) == 0)) {
		gpio_export(OVERO_GPIO_BT_NRESET, 0);
		gpio_set_value(OVERO_GPIO_BT_NRESET, 0);
		mdelay(6);
		gpio_set_value(OVERO_GPIO_BT_NRESET, 1);
		} else {
		printk(KERN_ERR "could not obtain gpio for "
		"OVERO_GPIO_BT_NRESET\n");
		}

		if ((gpio_request(OVERO_GPIO_USBH_CPEN, "OVERO_GPIO_USBH_CPEN") == 0) &&
		(gpio_direction_output(OVERO_GPIO_USBH_CPEN, 1) == 0))
		gpio_export(OVERO_GPIO_USBH_CPEN, 0);
		else
		printk(KERN_ERR "could not obtain gpio for "
		"OVERO_GPIO_USBH_CPEN\n");

		if ((gpio_request(OVERO_GPIO_USBH_NRESET,
		"OVERO_GPIO_USBH_NRESET") == 0) &&
		(gpio_direction_output(OVERO_GPIO_USBH_NRESET, 1) == 0))
		gpio_export(OVERO_GPIO_USBH_NRESET, 0);
		else
		printk(KERN_ERR "could not obtain gpio for "
		"OVERO_GPIO_USBH_NRESET\n");
		}

		static void __init overo_map_io(void)
		{
		omap2_set_globals_343x();
		omap2_map_common_io();
		}

		MACHINE_START(OVERO, "Gumstix Overo")
		.phys_io = 0x48000000,
		.io_pg_offst = ((0xd8000000) >> 18) & 0xfffc,
		.boot_params = 0x80000100,
		.map_io = overo_map_io,
		.init_irq = overo_init_irq,
		.init_machine = overo_init,
		.timer = &omap_timer,
		MACHINE_END

arch/arm/plat-omap/include/mach/board-overo.h

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		/*
		* board-overo.h (Gumstix Overo)
		*
		* Initial code: Steve Sakoman <steve@sakoman.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; either version 2 of the License, or (at your
		* option) any later version.
		*
		* You should have received a copy of the GNU General Public License along
		* with this program; if not, write to the Free Software Foundation, Inc.,
		* 675 Mass Ave, Cambridge, MA 02139, USA.
		*/

		#ifndef __ASM_ARCH_OVERO_H
		#define __ASM_ARCH_OVERO_H

		#define OVERO_GPIO_BT_XGATE 15
		#define OVERO_GPIO_W2W_NRESET 16
		#define OVERO_GPIO_BT_NRESET 164
		#define OVERO_GPIO_USBH_CPEN 168
		#define OVERO_GPIO_USBH_NRESET 183

		#endif /* ____ASM_ARCH_OVERO_H */