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/arch/arm/mach-ixp4xx/gtwx5715-setup.c

https://github.com/AICP/kernel_google_msm
C | 179 lines | 101 code | 25 blank | 53 comment | 0 complexity | c49e82331de617e0ad5fab2bb9a632b6 MD5 | raw file
  1/*
  2 * arch/arm/mach-ixp4xx/gtwx5715-setup.c
  3 *
  4 * Gemtek GTWX5715 (Linksys WRV54G) board setup
  5 *
  6 * Copyright (C) 2004 George T. Joseph
  7 * Derived from Coyote
  8 *
  9 * This program is free software; you can redistribute it and/or
 10 * modify it under the terms of the GNU General Public License
 11 * as published by the Free Software Foundation; either version 2
 12 * of the License, or (at your option) any later version.
 13 *
 14 * This program is distributed in the hope that it will be useful,
 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 17 * GNU General Public License for more details.
 18 *
 19 * You should have received a copy of the GNU General Public License
 20 * along with this program; if not, write to the Free Software
 21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 22 *
 23 */
 24
 25#include <linux/init.h>
 26#include <linux/device.h>
 27#include <linux/serial.h>
 28#include <linux/tty.h>
 29#include <linux/serial_8250.h>
 30#include <asm/types.h>
 31#include <asm/setup.h>
 32#include <asm/memory.h>
 33#include <mach/hardware.h>
 34#include <asm/irq.h>
 35#include <asm/mach-types.h>
 36#include <asm/mach/arch.h>
 37#include <asm/mach/flash.h>
 38
 39/* GPIO 5,6,7 and 12 are hard wired to the Kendin KS8995M Switch
 40   and operate as an SPI type interface.  The details of the interface
 41   are available on Kendin/Micrel's web site. */
 42
 43#define GTWX5715_KSSPI_SELECT	5
 44#define GTWX5715_KSSPI_TXD	6
 45#define GTWX5715_KSSPI_CLOCK	7
 46#define GTWX5715_KSSPI_RXD	12
 47
 48/* The "reset" button is wired to GPIO 3.
 49   The GPIO is brought "low" when the button is pushed. */
 50
 51#define GTWX5715_BUTTON_GPIO	3
 52
 53/* Board Label      Front Label
 54   LED1             Power
 55   LED2             Wireless-G
 56   LED3             not populated but could be
 57   LED4             Internet
 58   LED5 - LED8      Controlled by KS8995M Switch
 59   LED9             DMZ */
 60
 61#define GTWX5715_LED1_GPIO	2
 62#define GTWX5715_LED2_GPIO	9
 63#define GTWX5715_LED3_GPIO	8
 64#define GTWX5715_LED4_GPIO	1
 65#define GTWX5715_LED9_GPIO	4
 66
 67/*
 68 * Xscale UART registers are 32 bits wide with only the least
 69 * significant 8 bits having any meaning.  From a configuration
 70 * perspective, this means 2 things...
 71 *
 72 *   Setting .regshift = 2 so that the standard 16550 registers
 73 *   line up on every 4th byte.
 74 *
 75 *   Shifting the register start virtual address +3 bytes when
 76 *   compiled big-endian.  Since register writes are done on a
 77 *   single byte basis, if the shift isn't done the driver will
 78 *   write the value into the most significant byte of the register,
 79 *   which is ignored, instead of the least significant.
 80 */
 81
 82#ifdef	__ARMEB__
 83#define	REG_OFFSET	3
 84#else
 85#define	REG_OFFSET	0
 86#endif
 87
 88/*
 89 * Only the second or "console" uart is connected on the gtwx5715.
 90 */
 91
 92static struct resource gtwx5715_uart_resources[] = {
 93	{
 94		.start	= IXP4XX_UART2_BASE_PHYS,
 95		.end	= IXP4XX_UART2_BASE_PHYS + 0x0fff,
 96		.flags	= IORESOURCE_MEM,
 97	},
 98	{
 99		.start	= IRQ_IXP4XX_UART2,
100		.end	= IRQ_IXP4XX_UART2,
101		.flags	= IORESOURCE_IRQ,
102	},
103	{ },
104};
105
106
107static struct plat_serial8250_port gtwx5715_uart_platform_data[] = {
108	{
109	.mapbase	= IXP4XX_UART2_BASE_PHYS,
110	.membase	= (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
111	.irq		= IRQ_IXP4XX_UART2,
112	.flags		= UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
113	.iotype		= UPIO_MEM,
114	.regshift	= 2,
115	.uartclk	= IXP4XX_UART_XTAL,
116	},
117	{ },
118};
119
120static struct platform_device gtwx5715_uart_device = {
121	.name		= "serial8250",
122	.id		= PLAT8250_DEV_PLATFORM,
123	.dev			= {
124		.platform_data	= gtwx5715_uart_platform_data,
125	},
126	.num_resources	= 2,
127	.resource	= gtwx5715_uart_resources,
128};
129
130static struct flash_platform_data gtwx5715_flash_data = {
131	.map_name	= "cfi_probe",
132	.width		= 2,
133};
134
135static struct resource gtwx5715_flash_resource = {
136	.flags		= IORESOURCE_MEM,
137};
138
139static struct platform_device gtwx5715_flash = {
140	.name		= "IXP4XX-Flash",
141	.id		= 0,
142	.dev		= {
143		.platform_data = &gtwx5715_flash_data,
144	},
145	.num_resources	= 1,
146	.resource	= &gtwx5715_flash_resource,
147};
148
149static struct platform_device *gtwx5715_devices[] __initdata = {
150	&gtwx5715_uart_device,
151	&gtwx5715_flash,
152};
153
154static void __init gtwx5715_init(void)
155{
156	ixp4xx_sys_init();
157
158	gtwx5715_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
159	gtwx5715_flash_resource.end = IXP4XX_EXP_BUS_BASE(0) + SZ_8M - 1;
160
161	platform_add_devices(gtwx5715_devices, ARRAY_SIZE(gtwx5715_devices));
162}
163
164
165MACHINE_START(GTWX5715, "Gemtek GTWX5715 (Linksys WRV54G)")
166	/* Maintainer: George Joseph */
167	.map_io		= ixp4xx_map_io,
168	.init_early	= ixp4xx_init_early,
169	.init_irq	= ixp4xx_init_irq,
170	.timer		= &ixp4xx_timer,
171	.atag_offset	= 0x100,
172	.init_machine	= gtwx5715_init,
173#if defined(CONFIG_PCI)
174	.dma_zone_size	= SZ_64M,
175#endif
176	.restart	= ixp4xx_restart,
177MACHINE_END
178
179