/*
* Copyright 2007 Robert Schwebel <r.schwebel@pengutronix.de>, Pengutronix
* Copyright (C) 2009 Sascha Hauer (kernel@pengutronix.de)
*
* 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/platform_device.h>
#include <linux/io.h>
#include <linux/i2c.h>
#include <linux/i2c/at24.h>
#include <linux/dma-mapping.h>
#include <linux/spi/spi.h>
#include <linux/spi/eeprom.h>
#include <linux/irq.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/usb/otg.h>
#include <linux/usb/ulpi.h>
#include <linux/fsl_devices.h>
#include <asm/mach/arch.h>
#include <asm/mach-types.h>
#include <mach/common.h>
#include <mach/hardware.h>
#include <mach/iomux-mx27.h>
#include <mach/i2c.h>
#include <asm/mach/time.h>
#if defined(CONFIG_SPI_IMX) || defined(CONFIG_SPI_IMX_MODULE)
#include <mach/spi.h>
#endif
#include <mach/imx-uart.h>
#include <mach/audmux.h>
#include <mach/ssi.h>
#include <mach/mxc_nand.h>
#include <mach/irqs.h>
#include <mach/mmc.h>
#include <mach/mxc_ehci.h>
#include <mach/ulpi.h>
#include "devices.h"
#define OTG_PHY_CS_GPIO (GPIO_PORTB + 23)
#define USBH2_PHY_CS_GPIO (GPIO_PORTB + 24)
static int pca100_pins[] = {
/* UART1 */
PE12_PF_UART1_TXD,
PE13_PF_UART1_RXD,
PE14_PF_UART1_CTS,
PE15_PF_UART1_RTS,
/* SDHC */
PB4_PF_SD2_D0,
PB5_PF_SD2_D1,
PB6_PF_SD2_D2,
PB7_PF_SD2_D3,
PB8_PF_SD2_CMD,
PB9_PF_SD2_CLK,
/* 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,
/* SSI1 */
PC20_PF_SSI1_FS,
PC21_PF_SSI1_RXD,
PC22_PF_SSI1_TXD,
PC23_PF_SSI1_CLK,
/* onboard I2C */
PC5_PF_I2C2_SDA,
PC6_PF_I2C2_SCL,
/* external I2C */
PD17_PF_I2C_DATA,
PD18_PF_I2C_CLK,
/* SPI1 */
PD25_PF_CSPI1_RDY,
PD29_PF_CSPI1_SCLK,
PD30_PF_CSPI1_MISO,
PD31_PF_CSPI1_MOSI,
/* OTG */
OTG_PHY_CS_GPIO | GPIO_GPIO | GPIO_OUT,
PC7_PF_USBOTG_DATA5,
PC8_PF_USBOTG_DATA6,
PC9_PF_USBOTG_DATA0,
PC10_PF_USBOTG_DATA2,
PC11_PF_USBOTG_DATA1,
PC12_PF_USBOTG_DATA4,
PC13_PF_USBOTG_DATA3,
PE0_PF_USBOTG_NXT,
PE1_PF_USBOTG_STP,
PE2_PF_USBOTG_DIR,
PE24_PF_USBOTG_CLK,
PE25_PF_USBOTG_DATA7,
/* USBH2 */
USBH2_PHY_CS_GPIO | GPIO_GPIO | GPIO_OUT,
PA0_PF_USBH2_CLK,
PA1_PF_USBH2_DIR,
PA2_PF_USBH2_DATA7,
PA3_PF_USBH2_NXT,
PA4_PF_USBH2_STP,
PD19_AF_USBH2_DATA4,
PD20_AF_USBH2_DATA3,
PD21_AF_USBH2_DATA6,
PD22_AF_USBH2_DATA0,
PD23_AF_USBH2_DATA2,
PD24_AF_USBH2_DATA1,
PD26_AF_USBH2_DATA5,
};
static struct imxuart_platform_data uart_pdata = {
.flags = IMXUART_HAVE_RTSCTS,
};
static struct mxc_nand_platform_data pca100_nand_board_info = {
.width = 1,
.hw_ecc = 1,
};
static struct platform_device *platform_devices[] __initdata = {
&mxc_w1_master_device,
&mxc_fec_device,
&mxc_wdt,
};
static struct imxi2c_platform_data pca100_i2c_1_data = {
.bitrate = 100000,
};
static struct at24_platform_data board_eeprom = {
.byte_len = 4096,
.page_size = 32,
.flags = AT24_FLAG_ADDR16,
};
static struct i2c_board_info pca100_i2c_devices[] = {
{
I2C_BOARD_INFO("at24", 0x52), /* E0=0, E1=1, E2=0 */
.platform_data = &board_eeprom,
}, {
I2C_BOARD_INFO("rtc-pcf8563", 0x51),
.type = "pcf8563"
}, {
I2C_BOARD_INFO("lm75", 0x4a),
.type = "lm75"
}
};
#if defined(CONFIG_SPI_IMX) || defined(CONFIG_SPI_IMX_MODULE)
static struct spi_eeprom at25320 = {
.name = "at25320an",
.byte_len = 4096,
.page_size = 32,
.flags = EE_ADDR2,
};
static struct spi_board_info pca100_spi_board_info[] __initdata = {
{
.modalias = "at25",
.max_speed_hz = 30000,
.bus_num = 0,
.chip_select = 1,
.platform_data = &at25320,
},
};
static int pca100_spi_cs[] = {GPIO_PORTD + 28, GPIO_PORTD + 27};
static struct spi_imx_master pca100_spi_0_data = {
.chipselect = pca100_spi_cs,
.num_chipselect = ARRAY_SIZE(pca100_spi_cs),
};
#endif
static void pca100_ac97_warm_reset(struct snd_ac97 *ac97)
{
mxc_gpio_mode(GPIO_PORTC | 20 | GPIO_GPIO | GPIO_OUT);
gpio_set_value(GPIO_PORTC + 20, 1);
udelay(2);
gpio_set_value(GPIO_PORTC + 20, 0);
mxc_gpio_mode(PC20_PF_SSI1_FS);
msleep(2);
}
static void pca100_ac97_cold_reset(struct snd_ac97 *ac97)
{
mxc_gpio_mode(GPIO_PORTC | 20 | GPIO_GPIO | GPIO_OUT); /* FS */
gpio_set_value(GPIO_PORTC + 20, 0);
mxc_gpio_mode(GPIO_PORTC | 22 | GPIO_GPIO | GPIO_OUT); /* TX */
gpio_set_value(GPIO_PORTC + 22, 0);
mxc_gpio_mode(GPIO_PORTC | 28 | GPIO_GPIO | GPIO_OUT); /* reset */
gpio_set_value(GPIO_PORTC + 28, 0);
udelay(10);
gpio_set_value(GPIO_PORTC + 28, 1);
mxc_gpio_mode(PC20_PF_SSI1_FS);
mxc_gpio_mode(PC22_PF_SSI1_TXD);
msleep(2);
}
static struct imx_ssi_platform_data pca100_ssi_pdata = {
.ac97_reset = pca100_ac97_cold_reset,
.ac97_warm_reset = pca100_ac97_warm_reset,
.flags = IMX_SSI_USE_AC97,
};
static int pca100_sdhc2_init(struct device *dev, irq_handler_t detect_irq,
void *data)
{
int ret;
ret = request_irq(IRQ_GPIOC(29), detect_irq,
IRQF_DISABLED | IRQF_TRIGGER_FALLING,
"imx-mmc-detect", data);
if (ret)
printk(KERN_ERR
"pca100: Failed to reuest irq for sd/mmc detection\n");
return ret;
}
static void pca100_sdhc2_exit(struct device *dev, void *data)
{
free_irq(IRQ_GPIOC(29), data);
}
static struct imxmmc_platform_data sdhc_pdata = {
.init = pca100_sdhc2_init,
.exit = pca100_sdhc2_exit,
};
static int otg_phy_init(struct platform_device *pdev)
{
gpio_set_value(OTG_PHY_CS_GPIO, 0);
return 0;
}
static struct mxc_usbh_platform_data otg_pdata = {
.init = otg_phy_init,
.portsc = MXC_EHCI_MODE_ULPI,
.flags = MXC_EHCI_INTERFACE_DIFF_UNI,
};
static int usbh2_phy_init(struct platform_device *pdev)
{
gpio_set_value(USBH2_PHY_CS_GPIO, 0);
return 0;
}
static struct mxc_usbh_platform_data usbh2_pdata = {
.init = usbh2_phy_init,
.portsc = MXC_EHCI_MODE_ULPI,
.flags = MXC_EHCI_INTERFACE_DIFF_UNI,
};
static struct fsl_usb2_platform_data otg_device_pdata = {
.operating_mode = FSL_USB2_DR_DEVICE,
.phy_mode = FSL_USB2_PHY_ULPI,
};
static int otg_mode_host;
static int __init pca100_otg_mode(char *options)
{
if (!strcmp(options, "host"))
otg_mode_host = 1;
else if (!strcmp(options, "device"))
otg_mode_host = 0;
else
pr_info("otg_mode neither \"host\" nor \"device\". "
"Defaulting to device\n");
return 0;
}
__setup("otg_mode=", pca100_otg_mode);
static void __init pca100_init(void)
{
int ret;
/* SSI unit */
mxc_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0,
MXC_AUDMUX_V1_PCR_SYN | /* 4wire mode */
MXC_AUDMUX_V1_PCR_TFCSEL(3) |
MXC_AUDMUX_V1_PCR_TCLKDIR | /* clock is output */
MXC_AUDMUX_V1_PCR_RXDSEL(3));
mxc_audmux_v1_configure_port(3,
MXC_AUDMUX_V1_PCR_SYN | /* 4wire mode */
MXC_AUDMUX_V1_PCR_TFCSEL(0) |
MXC_AUDMUX_V1_PCR_TFSDIR |
MXC_AUDMUX_V1_PCR_RXDSEL(0));
ret = mxc_gpio_setup_multiple_pins(pca100_pins,
ARRAY_SIZE(pca100_pins), "PCA100");
if (ret)
printk(KERN_ERR "pca100: Failed to setup pins (%d)\n", ret);
mxc_register_device(&imx_ssi_device0, &pca100_ssi_pdata);
mxc_register_device(&mxc_uart_device0, &uart_pdata);
mxc_gpio_mode(GPIO_PORTC | 29 | GPIO_GPIO | GPIO_IN);
mxc_register_device(&mxc_sdhc_device1, &sdhc_pdata);
mxc_register_device(&imx27_nand_device, &pca100_nand_board_info);
/* only the i2c master 1 is used on this CPU card */
i2c_register_board_info(1, pca100_i2c_devices,
ARRAY_SIZE(pca100_i2c_devices));
mxc_register_device(&mxc_i2c_device1, &pca100_i2c_1_data);
mxc_gpio_mode(GPIO_PORTD | 28 | GPIO_GPIO | GPIO_OUT);
mxc_gpio_mode(GPIO_PORTD | 27 | GPIO_GPIO | GPIO_OUT);
/* GPIO0_IRQ */
mxc_gpio_mode(GPIO_PORTC | 31 | GPIO_GPIO | GPIO_IN);
/* GPIO1_IRQ */
mxc_gpio_mode(GPIO_PORTC | 25 | GPIO_GPIO | GPIO_IN);
/* GPIO2_IRQ */
mxc_gpio_mode(GPIO_PORTE | 5 | GPIO_GPIO | GPIO_IN);
#if defined(CONFIG_SPI_IMX) || defined(CONFIG_SPI_IMX_MODULE)
spi_register_board_info(pca100_spi_board_info,
ARRAY_SIZE(pca100_spi_board_info));
mxc_register_device(&mxc_spi_device0, &pca100_spi_0_data);
#endif
gpio_request(OTG_PHY_CS_GPIO, "usb-otg-cs");
gpio_direction_output(OTG_PHY_CS_GPIO, 1);
gpio_request(USBH2_PHY_CS_GPIO, "usb-host2-cs");
gpio_direction_output(USBH2_PHY_CS_GPIO, 1);
#if defined(CONFIG_USB_ULPI)
if (otg_mode_host) {
otg_pdata.otg = otg_ulpi_create(&mxc_ulpi_access_ops,
USB_OTG_DRV_VBUS | USB_OTG_DRV_VBUS_EXT);
mxc_register_device(&mxc_otg_host, &otg_pdata);
}
usbh2_pdata.otg = otg_ulpi_create(&mxc_ulpi_access_ops,
USB_OTG_DRV_VBUS | USB_OTG_DRV_VBUS_EXT);
mxc_register_device(&mxc_usbh2, &usbh2_pdata);
#endif
if (!otg_mode_host) {
gpio_set_value(OTG_PHY_CS_GPIO, 0);
mxc_register_device(&mxc_otg_udc_device, &otg_device_pdata);
}
platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
}
static void __init pca100_timer_init(void)
{
mx27_clocks_init(26000000);
}
static struct sys_timer pca100_timer = {
.init = pca100_timer_init,
};
MACHINE_START(PCA100, "phyCARD-i.MX27")
.phys_io = MX27_AIPI_BASE_ADDR,
.io_pg_offst = ((MX27_AIPI_BASE_ADDR_VIRT) >> 18) & 0xfffc,
.boot_params = MX27_PHYS_OFFSET + 0x100,
.map_io = mx27_map_io,
.init_irq = mx27_init_irq,
.init_machine = pca100_init,
.timer = &pca100_timer,
MACHINE_END
