gplugd.c 3.9 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11
/*
 *  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>
12
#include <linux/gpio.h>
13 14 15 16 17 18 19 20 21 22 23

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

#include <mach/pxa168.h>
#include <mach/mfp-pxa168.h>

#include "common.h"

static unsigned long gplugd_pin_config[] __initdata = {
	/* UART3 */
24 25 26 27 28 29 30
	GPIO8_UART3_TXD,
	GPIO9_UART3_RXD,
	GPIO1O_UART3_CTS,
	GPIO11_UART3_RTS,

	/* USB OTG PEN */
	GPIO18_GPIO,
31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113

	/* 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,

114 115 116 117 118 119
	/* SPI NOR Flash on SSP2 */
	GPIO107_SSP2_RXD,
	GPIO108_SSP2_TXD,
	GPIO110_GPIO,     /* SPI_CSn */
	GPIO111_SSP2_CLK,

120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164
	/* Select JTAG */
	GPIO109_GPIO,

	/* I2S */
	GPIO114_I2S_FRM,
	GPIO115_I2S_BCLK,
	GPIO116_I2S_TXD
};

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);
165
		gpio_free(35);
166 167 168 169 170 171 172
	}

	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);
173
		gpio_free(85);
174 175 176 177 178 179 180 181 182 183 184
	}
}

static void __init gplugd_init(void)
{
	mfp_config(ARRAY_AND_SIZE(gplugd_pin_config));

	select_disp_freq();

	/* on-chip devices */
	pxa168_add_uart(3);
185
	pxa168_add_ssp(1);
186
	pxa168_add_twsi(0, NULL, ARRAY_AND_SIZE(gplugd_i2c_board_info));
187
	platform_device_register(&pxa168_device_gpio);
188 189 190 191

	pxa168_add_eth(&gplugd_eth_platform_data);
}

E
Eric Miao 已提交
192
MACHINE_START(GPLUGD, "PXA168-based GuruPlug Display (gplugD) Platform")
193
	.map_io		= mmp_map_io,
R
Rob Herring 已提交
194
	.nr_irqs	= MMP_NR_IRQS,
195 196 197
	.init_irq       = pxa168_init_irq,
	.timer          = &pxa168_timer,
	.init_machine   = gplugd_init,
198
	.restart	= pxa168_restart,
199
MACHINE_END