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linux-next/arch/arm/mach-imx/mach-mx27ads.c
Shawn Guo b78d8e59a6 gpio/mxc: Change gpio-mxc into an upstanding gpio driver 
The patch makes necessary changes on gpio-mxc as below to turn it
into an upstanding gpio driver.

 * Add a list to save all mx2 ports references, so that
   mx2_gpio_irq_handler can walk through all interrupt status
   registers

 * Use readl/writel to replace mach-specific accessors
   __raw_readl/__raw_writel

 * Change mxc_gpio_init into mxc_gpio_probe function

 * Move "struct mxc_gpio_port" into gpio-mxc.c, as it needs not to
   be public at all, and also make some other cleanup on
   plat-mxc/include/mach/gpio.h at the same time

And the patch then migrates mach-imx and mach-mx5 to the updated
driver by adding corresponding platform devices.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Olof Johansson <olof@lixom.net>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-06 10:01:19 -06:00

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7.9 KiB
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/*
* 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.
*/
#include <linux/platform_device.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/map.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/physmap.h>
#include <linux/i2c.h>
#include <linux/irq.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/gpio.h>
#include <mach/iomux-mx27.h>
#include "devices-imx27.h"
/*
* Base address of PBC controller, CS4
*/
#define PBC_BASE_ADDRESS 0xf4300000
#define PBC_REG_ADDR(offset) (void __force __iomem *) \
(PBC_BASE_ADDRESS + (offset))
/* When the PBC address connection is fixed in h/w, defined as 1 */
#define PBC_ADDR_SH 0
/* Offsets for the PBC Controller register */
/*
* PBC Board version register offset
*/
#define PBC_VERSION_REG PBC_REG_ADDR(0x00000 >> PBC_ADDR_SH)
/*
* PBC Board control register 1 set address.
*/
#define PBC_BCTRL1_SET_REG PBC_REG_ADDR(0x00008 >> PBC_ADDR_SH)
/*
* PBC Board control register 1 clear address.
*/
#define PBC_BCTRL1_CLEAR_REG PBC_REG_ADDR(0x0000C >> PBC_ADDR_SH)
/* PBC Board Control Register 1 bit definitions */
#define PBC_BCTRL1_LCDON 0x0800 /* Enable the LCD */
/* to determine the correct external crystal reference */
#define CKIH_27MHZ_BIT_SET (1 << 3)
static const int mx27ads_pins[] __initconst = {
/* UART0 */
PE12_PF_UART1_TXD,
PE13_PF_UART1_RXD,
PE14_PF_UART1_CTS,
PE15_PF_UART1_RTS,
/* UART1 */
PE3_PF_UART2_CTS,
PE4_PF_UART2_RTS,
PE6_PF_UART2_TXD,
PE7_PF_UART2_RXD,
/* UART2 */
PE8_PF_UART3_TXD,
PE9_PF_UART3_RXD,
PE10_PF_UART3_CTS,
PE11_PF_UART3_RTS,
/* UART3 */
PB26_AF_UART4_RTS,
PB28_AF_UART4_TXD,
PB29_AF_UART4_CTS,
PB31_AF_UART4_RXD,
/* UART4 */
PB18_AF_UART5_TXD,
PB19_AF_UART5_RXD,
PB20_AF_UART5_CTS,
PB21_AF_UART5_RTS,
/* UART5 */
PB10_AF_UART6_TXD,
PB12_AF_UART6_CTS,
PB11_AF_UART6_RXD,
PB13_AF_UART6_RTS,
/* FEC */
PD0_AIN_FEC_TXD0,
PD1_AIN_FEC_TXD1,
PD2_AIN_FEC_TXD2,
PD3_AIN_FEC_TXD3,
PD4_AOUT_FEC_RX_ER,
PD5_AOUT_FEC_RXD1,
PD6_AOUT_FEC_RXD2,
PD7_AOUT_FEC_RXD3,
PD8_AF_FEC_MDIO,
PD9_AIN_FEC_MDC,
PD10_AOUT_FEC_CRS,
PD11_AOUT_FEC_TX_CLK,
PD12_AOUT_FEC_RXD0,
PD13_AOUT_FEC_RX_DV,
PD14_AOUT_FEC_RX_CLK,
PD15_AOUT_FEC_COL,
PD16_AIN_FEC_TX_ER,
PF23_AIN_FEC_TX_EN,
/* I2C2 */
PC5_PF_I2C2_SDA,
PC6_PF_I2C2_SCL,
/* FB */
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,
PA23_PF_LD17,
PA24_PF_REV,
PA25_PF_CLS,
PA26_PF_PS,
PA27_PF_SPL_SPR,
PA28_PF_HSYNC,
PA29_PF_VSYNC,
PA30_PF_CONTRAST,
PA31_PF_OE_ACD,
/* OWIRE */
PE16_AF_OWIRE,
/* SDHC1*/
PE18_PF_SD1_D0,
PE19_PF_SD1_D1,
PE20_PF_SD1_D2,
PE21_PF_SD1_D3,
PE22_PF_SD1_CMD,
PE23_PF_SD1_CLK,
/* SDHC2*/
PB4_PF_SD2_D0,
PB5_PF_SD2_D1,
PB6_PF_SD2_D2,
PB7_PF_SD2_D3,
PB8_PF_SD2_CMD,
PB9_PF_SD2_CLK,
};
static const struct mxc_nand_platform_data
mx27ads_nand_board_info __initconst = {
.width = 1,
.hw_ecc = 1,
};
/* ADS's NOR flash */
static struct physmap_flash_data mx27ads_flash_data = {
.width = 2,
};
static struct resource mx27ads_flash_resource = {
.start = 0xc0000000,
.end = 0xc0000000 + 0x02000000 - 1,
.flags = IORESOURCE_MEM,
};
static struct platform_device mx27ads_nor_mtd_device = {
.name = "physmap-flash",
.id = 0,
.dev = {
.platform_data = &mx27ads_flash_data,
},
.num_resources = 1,
.resource = &mx27ads_flash_resource,
};
static const struct imxi2c_platform_data mx27ads_i2c1_data __initconst = {
.bitrate = 100000,
};
static struct i2c_board_info mx27ads_i2c_devices[] = {
};
void lcd_power(int on)
{
if (on)
__raw_writew(PBC_BCTRL1_LCDON, PBC_BCTRL1_SET_REG);
else
__raw_writew(PBC_BCTRL1_LCDON, PBC_BCTRL1_CLEAR_REG);
}
static struct imx_fb_videomode mx27ads_modes[] = {
{
.mode = {
.name = "Sharp-LQ035Q7",
.refresh = 60,
.xres = 240,
.yres = 320,
.pixclock = 188679, /* in ps (5.3MHz) */
.hsync_len = 1,
.left_margin = 9,
.right_margin = 16,
.vsync_len = 1,
.upper_margin = 7,
.lower_margin = 9,
},
.bpp = 16,
.pcr = 0xFB008BC0,
},
};
static const struct imx_fb_platform_data mx27ads_fb_data __initconst = {
.mode = mx27ads_modes,
.num_modes = ARRAY_SIZE(mx27ads_modes),
/*
* - HSYNC active high
* - VSYNC active high
* - clk notenabled while idle
* - clock inverted
* - data not inverted
* - data enable low active
* - enable sharp mode
*/
.pwmr = 0x00A903FF,
.lscr1 = 0x00120300,
.dmacr = 0x00020010,
.lcd_power = lcd_power,
};
static int mx27ads_sdhc1_init(struct device *dev, irq_handler_t detect_irq,
void *data)
{
return request_irq(IRQ_GPIOE(21), detect_irq, IRQF_TRIGGER_RISING,
"sdhc1-card-detect", data);
}
static int mx27ads_sdhc2_init(struct device *dev, irq_handler_t detect_irq,
void *data)
{
return request_irq(IRQ_GPIOB(7), detect_irq, IRQF_TRIGGER_RISING,
"sdhc2-card-detect", data);
}
static void mx27ads_sdhc1_exit(struct device *dev, void *data)
{
free_irq(IRQ_GPIOE(21), data);
}
static void mx27ads_sdhc2_exit(struct device *dev, void *data)
{
free_irq(IRQ_GPIOB(7), data);
}
static const struct imxmmc_platform_data sdhc1_pdata __initconst = {
.init = mx27ads_sdhc1_init,
.exit = mx27ads_sdhc1_exit,
};
static const struct imxmmc_platform_data sdhc2_pdata __initconst = {
.init = mx27ads_sdhc2_init,
.exit = mx27ads_sdhc2_exit,
};
static struct platform_device *platform_devices[] __initdata = {
&mx27ads_nor_mtd_device,
};
static const struct imxuart_platform_data uart_pdata __initconst = {
.flags = IMXUART_HAVE_RTSCTS,
};
static void __init mx27ads_board_init(void)
{
imx27_soc_init();
mxc_gpio_setup_multiple_pins(mx27ads_pins, ARRAY_SIZE(mx27ads_pins),
"mx27ads");
imx27_add_imx_uart0(&uart_pdata);
imx27_add_imx_uart1(&uart_pdata);
imx27_add_imx_uart2(&uart_pdata);
imx27_add_imx_uart3(&uart_pdata);
imx27_add_imx_uart4(&uart_pdata);
imx27_add_imx_uart5(&uart_pdata);
imx27_add_mxc_nand(&mx27ads_nand_board_info);
/* only the i2c master 1 is used on this CPU card */
i2c_register_board_info(1, mx27ads_i2c_devices,
ARRAY_SIZE(mx27ads_i2c_devices));
imx27_add_imx_i2c(1, &mx27ads_i2c1_data);
imx27_add_imx_fb(&mx27ads_fb_data);
imx27_add_mxc_mmc(0, &sdhc1_pdata);
imx27_add_mxc_mmc(1, &sdhc2_pdata);
imx27_add_fec(NULL);
platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
imx27_add_mxc_w1(NULL);
}
static void __init mx27ads_timer_init(void)
{
unsigned long fref = 26000000;
if ((__raw_readw(PBC_VERSION_REG) & CKIH_27MHZ_BIT_SET) == 0)
fref = 27000000;
mx27_clocks_init(fref);
}
static struct sys_timer mx27ads_timer = {
.init = mx27ads_timer_init,
};
static struct map_desc mx27ads_io_desc[] __initdata = {
{
.virtual = PBC_BASE_ADDRESS,
.pfn = __phys_to_pfn(MX27_CS4_BASE_ADDR),
.length = SZ_1M,
.type = MT_DEVICE,
},
};
static void __init mx27ads_map_io(void)
{
mx27_map_io();
iotable_init(mx27ads_io_desc, ARRAY_SIZE(mx27ads_io_desc));
}
MACHINE_START(MX27ADS, "Freescale i.MX27ADS")
/* maintainer: Freescale Semiconductor, Inc. */
.boot_params = MX27_PHYS_OFFSET + 0x100,
.map_io = mx27ads_map_io,
.init_early = imx27_init_early,
.init_irq = mx27_init_irq,
.timer = &mx27ads_timer,
.init_machine = mx27ads_board_init,
MACHINE_END
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