alistair23-linux/arch/arm/mach-imx/mach-mx53_smd.c

/*
 * Copyright (C) 2011 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.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#include <linux/init.h>
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/gpio.h>

#include <mach/common.h>
#include <mach/hardware.h>
#include <mach/iomux-mx53.h>

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

#include "devices-imx53.h"

#define SMD_FEC_PHY_RST		IMX_GPIO_NR(7, 6)
#define MX53_SMD_SATA_PWR_EN    IMX_GPIO_NR(3, 3)

static iomux_v3_cfg_t mx53_smd_pads[] = {
	MX53_PAD_CSI0_DAT10__UART1_TXD_MUX,
	MX53_PAD_CSI0_DAT11__UART1_RXD_MUX,

	MX53_PAD_PATA_BUFFER_EN__UART2_RXD_MUX,
	MX53_PAD_PATA_DMARQ__UART2_TXD_MUX,

	MX53_PAD_PATA_CS_0__UART3_TXD_MUX,
	MX53_PAD_PATA_CS_1__UART3_RXD_MUX,
	MX53_PAD_PATA_DA_1__UART3_CTS,
	MX53_PAD_PATA_DA_2__UART3_RTS,
	/* I2C1 */
	MX53_PAD_CSI0_DAT8__I2C1_SDA,
	MX53_PAD_CSI0_DAT9__I2C1_SCL,
	/* SD1 */
	MX53_PAD_SD1_CMD__ESDHC1_CMD,
	MX53_PAD_SD1_CLK__ESDHC1_CLK,
	MX53_PAD_SD1_DATA0__ESDHC1_DAT0,
	MX53_PAD_SD1_DATA1__ESDHC1_DAT1,
	MX53_PAD_SD1_DATA2__ESDHC1_DAT2,
	MX53_PAD_SD1_DATA3__ESDHC1_DAT3,
	/* SD2 */
	MX53_PAD_SD2_CMD__ESDHC2_CMD,
	MX53_PAD_SD2_CLK__ESDHC2_CLK,
	MX53_PAD_SD2_DATA0__ESDHC2_DAT0,
	MX53_PAD_SD2_DATA1__ESDHC2_DAT1,
	MX53_PAD_SD2_DATA2__ESDHC2_DAT2,
	MX53_PAD_SD2_DATA3__ESDHC2_DAT3,
	/* SD3 */
	MX53_PAD_PATA_DATA8__ESDHC3_DAT0,
	MX53_PAD_PATA_DATA9__ESDHC3_DAT1,
	MX53_PAD_PATA_DATA10__ESDHC3_DAT2,
	MX53_PAD_PATA_DATA11__ESDHC3_DAT3,
	MX53_PAD_PATA_DATA0__ESDHC3_DAT4,
	MX53_PAD_PATA_DATA1__ESDHC3_DAT5,
	MX53_PAD_PATA_DATA2__ESDHC3_DAT6,
	MX53_PAD_PATA_DATA3__ESDHC3_DAT7,
	MX53_PAD_PATA_IORDY__ESDHC3_CLK,
	MX53_PAD_PATA_RESET_B__ESDHC3_CMD,
};

static const struct imxuart_platform_data mx53_smd_uart_data __initconst = {
	.flags = IMXUART_HAVE_RTSCTS,
};

static inline void mx53_smd_init_uart(void)
{
	imx53_add_imx_uart(0, NULL);
	imx53_add_imx_uart(1, NULL);
	imx53_add_imx_uart(2, &mx53_smd_uart_data);
}

static inline void mx53_smd_fec_reset(void)
{
	int ret;

	/* reset FEC PHY */
	ret = gpio_request(SMD_FEC_PHY_RST, "fec-phy-reset");
	if (ret) {
		printk(KERN_ERR"failed to get GPIO_FEC_PHY_RESET: %d\n", ret);
		return;
	}
	gpio_direction_output(SMD_FEC_PHY_RST, 0);
	msleep(1);
	gpio_set_value(SMD_FEC_PHY_RST, 1);
}

static const struct fec_platform_data mx53_smd_fec_data __initconst = {
	.phy = PHY_INTERFACE_MODE_RMII,
};

static const struct imxi2c_platform_data mx53_smd_i2c_data __initconst = {
	.bitrate = 100000,
};

static inline void mx53_smd_ahci_pwr_on(void)
{
	int ret;

	/* Enable SATA PWR */
	ret = gpio_request_one(MX53_SMD_SATA_PWR_EN,
			GPIOF_DIR_OUT | GPIOF_INIT_HIGH, "ahci-sata-pwr");
	if (ret) {
		pr_err("failed to enable SATA_PWR_EN: %d\n", ret);
		return;
	}
}

void __init imx53_smd_common_init(void)
{
	mxc_iomux_v3_setup_multiple_pads(mx53_smd_pads,
					 ARRAY_SIZE(mx53_smd_pads));
}

static void __init mx53_smd_board_init(void)
{
	imx53_soc_init();
	imx53_smd_common_init();

	mx53_smd_init_uart();
	mx53_smd_fec_reset();
	imx53_add_fec(&mx53_smd_fec_data);
	imx53_add_imx2_wdt(0, NULL);
	imx53_add_imx_i2c(0, &mx53_smd_i2c_data);
	imx53_add_sdhci_esdhc_imx(0, NULL);
	imx53_add_sdhci_esdhc_imx(1, NULL);
	imx53_add_sdhci_esdhc_imx(2, NULL);
	mx53_smd_ahci_pwr_on();
	imx53_add_ahci_imx();
}

static void __init mx53_smd_timer_init(void)
{
	mx53_clocks_init(32768, 24000000, 22579200, 0);
}

static struct sys_timer mx53_smd_timer = {
	.init	= mx53_smd_timer_init,
};

MACHINE_START(MX53_SMD, "Freescale MX53 SMD Board")
	.map_io = mx53_map_io,
	.init_early = imx53_init_early,
	.init_irq = mx53_init_irq,
	.handle_irq = imx53_handle_irq,
	.timer = &mx53_smd_timer,
	.init_machine = mx53_smd_board_init,
	.restart	= mxc_restart,
MACHINE_END