gplugd.c
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/*
* linux/arch/arm/mach-mmp/gplugd.c
*
* Support for the Marvell PXA168-based GuruPlug Display (gplugD) Platform.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* publishhed by the Free Software Foundation.
*/
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <linux/gpio-pxa.h>
#include <asm/mach/arch.h>
#include <asm/mach-types.h>
#include <mach/irqs.h>
#include <mach/pxa168.h>
#include <mach/mfp-pxa168.h>
#include "common.h"
static unsigned long gplugd_pin_config[] __initdata = {
/* UART3 */
GPIO8_UART3_TXD,
GPIO9_UART3_RXD,
GPIO1O_UART3_CTS,
GPIO11_UART3_RTS,
/* USB OTG PEN */
GPIO18_GPIO,
/* MMC2 */
GPIO28_MMC2_CMD,
GPIO29_MMC2_CLK,
GPIO30_MMC2_DAT0,
GPIO31_MMC2_DAT1,
GPIO32_MMC2_DAT2,
GPIO33_MMC2_DAT3,
/* LCD & HDMI clock selection GPIO: 0: 74.176MHz, 1: 74.25 MHz */
GPIO35_GPIO,
GPIO36_GPIO, /* CEC Interrupt */
/* MMC1 */
GPIO43_MMC1_CLK,
GPIO49_MMC1_CMD,
GPIO41_MMC1_DAT0,
GPIO40_MMC1_DAT1,
GPIO52_MMC1_DAT2,
GPIO51_MMC1_DAT3,
GPIO53_MMC1_CD,
/* LCD */
GPIO56_LCD_FCLK_RD,
GPIO57_LCD_LCLK_A0,
GPIO58_LCD_PCLK_WR,
GPIO59_LCD_DENA_BIAS,
GPIO60_LCD_DD0,
GPIO61_LCD_DD1,
GPIO62_LCD_DD2,
GPIO63_LCD_DD3,
GPIO64_LCD_DD4,
GPIO65_LCD_DD5,
GPIO66_LCD_DD6,
GPIO67_LCD_DD7,
GPIO68_LCD_DD8,
GPIO69_LCD_DD9,
GPIO70_LCD_DD10,
GPIO71_LCD_DD11,
GPIO72_LCD_DD12,
GPIO73_LCD_DD13,
GPIO74_LCD_DD14,
GPIO75_LCD_DD15,
GPIO76_LCD_DD16,
GPIO77_LCD_DD17,
GPIO78_LCD_DD18,
GPIO79_LCD_DD19,
GPIO80_LCD_DD20,
GPIO81_LCD_DD21,
GPIO82_LCD_DD22,
GPIO83_LCD_DD23,
/* GPIO */
GPIO84_GPIO,
GPIO85_GPIO,
/* Fast-Ethernet*/
GPIO86_TX_CLK,
GPIO87_TX_EN,
GPIO88_TX_DQ3,
GPIO89_TX_DQ2,
GPIO90_TX_DQ1,
GPIO91_TX_DQ0,
GPIO92_MII_CRS,
GPIO93_MII_COL,
GPIO94_RX_CLK,
GPIO95_RX_ER,
GPIO96_RX_DQ3,
GPIO97_RX_DQ2,
GPIO98_RX_DQ1,
GPIO99_RX_DQ0,
GPIO100_MII_MDC,
GPIO101_MII_MDIO,
GPIO103_RX_DV,
GPIO104_GPIO, /* Reset PHY */
/* RTC interrupt */
GPIO102_GPIO,
/* I2C */
GPIO105_CI2C_SDA,
GPIO106_CI2C_SCL,
/* SPI NOR Flash on SSP2 */
GPIO107_SSP2_RXD,
GPIO108_SSP2_TXD,
GPIO110_GPIO, /* SPI_CSn */
GPIO111_SSP2_CLK,
/* Select JTAG */
GPIO109_GPIO,
/* I2S */
GPIO114_I2S_FRM,
GPIO115_I2S_BCLK,
GPIO116_I2S_TXD
};
static struct pxa_gpio_platform_data pxa168_gpio_pdata = {
.irq_base = MMP_GPIO_TO_IRQ(0),
};
static struct i2c_board_info gplugd_i2c_board_info[] = {
{
.type = "isl1208",
.addr = 0x6F,
}
};
/* Bring PHY out of reset by setting GPIO 104 */
static int gplugd_eth_init(void)
{
if (unlikely(gpio_request(104, "ETH_RESET_N"))) {
printk(KERN_ERR "Can't get hold of GPIO 104 to bring Ethernet "
"PHY out of reset\n");
return -EIO;
}
gpio_direction_output(104, 1);
gpio_free(104);
return 0;
}
struct pxa168_eth_platform_data gplugd_eth_platform_data = {
.port_number = 0,
.phy_addr = 0,
.speed = 0, /* Autonagotiation */
.init = gplugd_eth_init,
};
static void __init select_disp_freq(void)
{
/* set GPIO 35 & clear GPIO 85 to set LCD External Clock to 74.25 MHz */
if (unlikely(gpio_request(35, "DISP_FREQ_SEL"))) {
printk(KERN_ERR "Can't get hold of GPIO 35 to select display "
"frequency\n");
} else {
gpio_direction_output(35, 1);
gpio_free(35);
}
if (unlikely(gpio_request(85, "DISP_FREQ_SEL_2"))) {
printk(KERN_ERR "Can't get hold of GPIO 85 to select display "
"frequency\n");
} else {
gpio_direction_output(85, 0);
gpio_free(85);
}
}
static void __init gplugd_init(void)
{
mfp_config(ARRAY_AND_SIZE(gplugd_pin_config));
select_disp_freq();
/* on-chip devices */
pxa168_add_uart(3);
pxa168_add_ssp(1);
pxa168_add_twsi(0, NULL, ARRAY_AND_SIZE(gplugd_i2c_board_info));
platform_device_add_data(&pxa168_device_gpio, &pxa168_gpio_pdata,
sizeof(struct pxa_gpio_platform_data));
platform_device_register(&pxa168_device_gpio);
pxa168_add_eth(&gplugd_eth_platform_data);
}
MACHINE_START(GPLUGD, "PXA168-based GuruPlug Display (gplugD) Platform")
.map_io = mmp_map_io,
.nr_irqs = MMP_NR_IRQS,
.init_irq = pxa168_init_irq,
.init_time = pxa168_timer_init,
.init_machine = gplugd_init,
.restart = pxa168_restart,
MACHINE_END