Linux-2.6.33.2/arch/arm/mach-mx2/mx21ads.c
/*
* Copyright (C) 2000 Deep Blue Solutions Ltd
* Copyright (C) 2002 Shane Nay (shane@minirl.com)
* Copyright 2006-2007 Freescale Semiconductor, Inc. All Rights Reserved.
*
* 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.
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/platform_device.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/physmap.h>
#include <linux/gpio.h>
#include <mach/common.h>
#include <mach/hardware.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/time.h>
#include <asm/mach/map.h>
#include <mach/imx-uart.h>
#include <mach/imxfb.h>
#include <mach/iomux.h>
#include <mach/mxc_nand.h>
#include <mach/mmc.h>
#include <mach/board-mx21ads.h>
#include "devices.h"
static unsigned int mx21ads_pins[] = {
/* CS8900A */
(GPIO_PORTE | GPIO_GPIO | GPIO_IN | 11),
/* UART1 */
PE12_PF_UART1_TXD,
PE13_PF_UART1_RXD,
PE14_PF_UART1_CTS,
PE15_PF_UART1_RTS,
/* UART3 (IrDA) - only TXD and RXD */
PE8_PF_UART3_TXD,
PE9_PF_UART3_RXD,
/* UART4 */
PB26_AF_UART4_RTS,
PB28_AF_UART4_TXD,
PB29_AF_UART4_CTS,
PB31_AF_UART4_RXD,
/* LCDC */
PA5_PF_LSCLK,
PA6_PF_LD0,
PA7_PF_LD1,
PA8_PF_LD2,
PA9_PF_LD3,
PA10_PF_LD4,
PA11_PF_LD5,
PA12_PF_LD6,
PA13_PF_LD7,
PA14_PF_LD8,
PA15_PF_LD9,
PA16_PF_LD10,
PA17_PF_LD11,
PA18_PF_LD12,
PA19_PF_LD13,
PA20_PF_LD14,
PA21_PF_LD15,
PA22_PF_LD16,
PA24_PF_REV, /* Sharp panel dedicated signal */
PA25_PF_CLS, /* Sharp panel dedicated signal */
PA26_PF_PS, /* Sharp panel dedicated signal */
PA27_PF_SPL_SPR, /* Sharp panel dedicated signal */
PA28_PF_HSYNC,
PA29_PF_VSYNC,
PA30_PF_CONTRAST,
PA31_PF_OE_ACD,
/* MMC/SDHC */
PE18_PF_SD1_D0,
PE19_PF_SD1_D1,
PE20_PF_SD1_D2,
PE21_PF_SD1_D3,
PE22_PF_SD1_CMD,
PE23_PF_SD1_CLK,
/* NFC */
PF0_PF_NRFB,
PF1_PF_NFCE,
PF2_PF_NFWP,
PF3_PF_NFCLE,
PF4_PF_NFALE,
PF5_PF_NFRE,
PF6_PF_NFWE,
PF7_PF_NFIO0,
PF8_PF_NFIO1,
PF9_PF_NFIO2,
PF10_PF_NFIO3,
PF11_PF_NFIO4,
PF12_PF_NFIO5,
PF13_PF_NFIO6,
PF14_PF_NFIO7,
};
/* ADS's NOR flash: 2x AM29BDS128HE9VKI on 32-bit bus */
static struct physmap_flash_data mx21ads_flash_data = {
.width = 4,
};
static struct resource mx21ads_flash_resource = {
.start = CS0_BASE_ADDR,
.end = CS0_BASE_ADDR + 0x02000000 - 1,
.flags = IORESOURCE_MEM,
};
static struct platform_device mx21ads_nor_mtd_device = {
.name = "physmap-flash",
.id = 0,
.dev = {
.platform_data = &mx21ads_flash_data,
},
.num_resources = 1,
.resource = &mx21ads_flash_resource,
};
static struct imxuart_platform_data uart_pdata = {
.flags = IMXUART_HAVE_RTSCTS,
};
static struct imxuart_platform_data uart_norts_pdata = {
};
static int mx21ads_fb_init(struct platform_device *pdev)
{
u16 tmp;
tmp = __raw_readw(MX21ADS_IO_REG);
tmp |= MX21ADS_IO_LCDON;
__raw_writew(tmp, MX21ADS_IO_REG);
return 0;
}
static void mx21ads_fb_exit(struct platform_device *pdev)
{
u16 tmp;
tmp = __raw_readw(MX21ADS_IO_REG);
tmp &= ~MX21ADS_IO_LCDON;
__raw_writew(tmp, MX21ADS_IO_REG);
}
/*
* Connected is a portrait Sharp-QVGA display
* of type: LQ035Q7DB02
*/
static struct imx_fb_videomode mx21ads_modes[] = {
{
.mode = {
.name = "Sharp-LQ035Q7",
.refresh = 60,
.xres = 240,
.yres = 320,
.pixclock = 188679, /* in ps (5.3MHz) */
.hsync_len = 2,
.left_margin = 6,
.right_margin = 16,
.vsync_len = 1,
.upper_margin = 8,
.lower_margin = 10,
},
.pcr = 0xfb108bc7,
.bpp = 16,
},
};
static struct imx_fb_platform_data mx21ads_fb_data = {
.mode = mx21ads_modes,
.num_modes = ARRAY_SIZE(mx21ads_modes),
.pwmr = 0x00a903ff,
.lscr1 = 0x00120300,
.dmacr = 0x00020008,
.init = mx21ads_fb_init,
.exit = mx21ads_fb_exit,
};
static int mx21ads_sdhc_get_ro(struct device *dev)
{
return (__raw_readw(MX21ADS_IO_REG) & MX21ADS_IO_SD_WP) ? 1 : 0;
}
static int mx21ads_sdhc_init(struct device *dev, irq_handler_t detect_irq,
void *data)
{
int ret;
ret = request_irq(IRQ_GPIOD(25), detect_irq,
IRQF_TRIGGER_FALLING, "mmc-detect", data);
if (ret)
goto out;
return 0;
out:
return ret;
}
static void mx21ads_sdhc_exit(struct device *dev, void *data)
{
free_irq(IRQ_GPIOD(25), data);
}
static struct imxmmc_platform_data mx21ads_sdhc_pdata = {
.ocr_avail = MMC_VDD_29_30 | MMC_VDD_30_31, /* 3.0V */
.get_ro = mx21ads_sdhc_get_ro,
.init = mx21ads_sdhc_init,
.exit = mx21ads_sdhc_exit,
};
static struct mxc_nand_platform_data mx21ads_nand_board_info = {
.width = 1,
.hw_ecc = 1,
};
static struct map_desc mx21ads_io_desc[] __initdata = {
/*
* Memory-mapped I/O on MX21ADS Base board:
* - CS8900A Ethernet controller
* - ST16C2552CJ UART
* - CPU and Base board version
* - Base board I/O register
*/
{
.virtual = MX21ADS_MMIO_BASE_ADDR,
.pfn = __phys_to_pfn(CS1_BASE_ADDR),
.length = MX21ADS_MMIO_SIZE,
.type = MT_DEVICE,
},
};
static void __init mx21ads_map_io(void)
{
mx21_map_io();
iotable_init(mx21ads_io_desc, ARRAY_SIZE(mx21ads_io_desc));
}
static struct platform_device *platform_devices[] __initdata = {
&mx21ads_nor_mtd_device,
};
static void __init mx21ads_board_init(void)
{
mxc_gpio_setup_multiple_pins(mx21ads_pins, ARRAY_SIZE(mx21ads_pins),
"mx21ads");
mxc_register_device(&mxc_uart_device0, &uart_pdata);
mxc_register_device(&mxc_uart_device2, &uart_norts_pdata);
mxc_register_device(&mxc_uart_device3, &uart_pdata);
mxc_register_device(&mxc_fb_device, &mx21ads_fb_data);
mxc_register_device(&mxc_sdhc_device0, &mx21ads_sdhc_pdata);
mxc_register_device(&mxc_nand_device, &mx21ads_nand_board_info);
platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
}
static void __init mx21ads_timer_init(void)
{
mx21_clocks_init(32768, 26000000);
}
static struct sys_timer mx21ads_timer = {
.init = mx21ads_timer_init,
};
MACHINE_START(MX21ADS, "Freescale i.MX21ADS")
/* maintainer: Freescale Semiconductor, Inc. */
.phys_io = AIPI_BASE_ADDR,
.io_pg_offst = ((AIPI_BASE_ADDR_VIRT) >> 18) & 0xfffc,
.boot_params = PHYS_OFFSET + 0x100,
.map_io = mx21ads_map_io,
.init_irq = mx21_init_irq,
.init_machine = mx21ads_board_init,
.timer = &mx21ads_timer,
MACHINE_END