LXR linux/arch/arm/mach-mmp/gplugd.c

   1/*
   2 *  linux/arch/arm/mach-mmp/gplugd.c
   3 *
   4 *  Support for the Marvell PXA168-based GuruPlug Display (gplugD) Platform.
   5 *
   6 *  This program is free software; you can redistribute it and/or modify
   7 *  it under the terms of the GNU General Public License version 2 as
   8 *  publishhed by the Free Software Foundation.
   9 */
  10
  11#include <linux/init.h>
  12#include <linux/platform_device.h>
  13#include <linux/gpio.h>
  14#include <linux/gpio-pxa.h>
  15
  16#include <asm/mach/arch.h>
  17#include <asm/mach-types.h>
  18
  19#include "irqs.h"
  20#include "pxa168.h"
  21#include "mfp-pxa168.h"
  22
  23#include "common.h"
  24
  25static unsigned long gplugd_pin_config[] __initdata = {
  26        /* UART3 */
  27        GPIO8_UART3_TXD,
  28        GPIO9_UART3_RXD,
  29        GPIO1O_UART3_CTS,
  30        GPIO11_UART3_RTS,
  31
  32        /* USB OTG PEN */
  33        GPIO18_GPIO,
  34
  35        /* MMC2 */
  36        GPIO28_MMC2_CMD,
  37        GPIO29_MMC2_CLK,
  38        GPIO30_MMC2_DAT0,
  39        GPIO31_MMC2_DAT1,
  40        GPIO32_MMC2_DAT2,
  41        GPIO33_MMC2_DAT3,
  42
  43        /* LCD & HDMI clock selection GPIO: 0: 74.176MHz, 1: 74.25 MHz */
  44        GPIO35_GPIO,
  45        GPIO36_GPIO, /* CEC Interrupt */
  46
  47        /* MMC1 */
  48        GPIO43_MMC1_CLK,
  49        GPIO49_MMC1_CMD,
  50        GPIO41_MMC1_DAT0,
  51        GPIO40_MMC1_DAT1,
  52        GPIO52_MMC1_DAT2,
  53        GPIO51_MMC1_DAT3,
  54        GPIO53_MMC1_CD,
  55
  56        /* LCD */
  57        GPIO56_LCD_FCLK_RD,
  58        GPIO57_LCD_LCLK_A0,
  59        GPIO58_LCD_PCLK_WR,
  60        GPIO59_LCD_DENA_BIAS,
  61        GPIO60_LCD_DD0,
  62        GPIO61_LCD_DD1,
  63        GPIO62_LCD_DD2,
  64        GPIO63_LCD_DD3,
  65        GPIO64_LCD_DD4,
  66        GPIO65_LCD_DD5,
  67        GPIO66_LCD_DD6,
  68        GPIO67_LCD_DD7,
  69        GPIO68_LCD_DD8,
  70        GPIO69_LCD_DD9,
  71        GPIO70_LCD_DD10,
  72        GPIO71_LCD_DD11,
  73        GPIO72_LCD_DD12,
  74        GPIO73_LCD_DD13,
  75        GPIO74_LCD_DD14,
  76        GPIO75_LCD_DD15,
  77        GPIO76_LCD_DD16,
  78        GPIO77_LCD_DD17,
  79        GPIO78_LCD_DD18,
  80        GPIO79_LCD_DD19,
  81        GPIO80_LCD_DD20,
  82        GPIO81_LCD_DD21,
  83        GPIO82_LCD_DD22,
  84        GPIO83_LCD_DD23,
  85
  86        /* GPIO */
  87        GPIO84_GPIO,
  88        GPIO85_GPIO,
  89
  90        /* Fast-Ethernet*/
  91        GPIO86_TX_CLK,
  92        GPIO87_TX_EN,
  93        GPIO88_TX_DQ3,
  94        GPIO89_TX_DQ2,
  95        GPIO90_TX_DQ1,
  96        GPIO91_TX_DQ0,
  97        GPIO92_MII_CRS,
  98        GPIO93_MII_COL,
  99        GPIO94_RX_CLK,
 100        GPIO95_RX_ER,
 101        GPIO96_RX_DQ3,
 102        GPIO97_RX_DQ2,
 103        GPIO98_RX_DQ1,
 104        GPIO99_RX_DQ0,
 105        GPIO100_MII_MDC,
 106        GPIO101_MII_MDIO,
 107        GPIO103_RX_DV,
 108        GPIO104_GPIO,     /* Reset PHY */
 109
 110        /* RTC interrupt */
 111        GPIO102_GPIO,
 112
 113        /* I2C */
 114        GPIO105_CI2C_SDA,
 115        GPIO106_CI2C_SCL,
 116
 117        /* SPI NOR Flash on SSP2 */
 118        GPIO107_SSP2_RXD,
 119        GPIO108_SSP2_TXD,
 120        GPIO110_GPIO,     /* SPI_CSn */
 121        GPIO111_SSP2_CLK,
 122
 123        /* Select JTAG */
 124        GPIO109_GPIO,
 125
 126        /* I2S */
 127        GPIO114_I2S_FRM,
 128        GPIO115_I2S_BCLK,
 129        GPIO116_I2S_TXD
 130};
 131
 132static struct pxa_gpio_platform_data pxa168_gpio_pdata = {
 133        .irq_base       = MMP_GPIO_TO_IRQ(0),
 134};
 135
 136static struct i2c_board_info gplugd_i2c_board_info[] = {
 137        {
 138                .type = "isl1208",
 139                .addr = 0x6F,
 140        }
 141};
 142
 143/* Bring PHY out of reset by setting GPIO 104 */
 144static int gplugd_eth_init(void)
 145{
 146        if (unlikely(gpio_request(104, "ETH_RESET_N"))) {
 147                printk(KERN_ERR "Can't get hold of GPIO 104 to bring Ethernet "
 148                                "PHY out of reset\n");
 149                return -EIO;
 150        }
 151
 152        gpio_direction_output(104, 1);
 153        gpio_free(104);
 154        return 0;
 155}
 156
 157struct pxa168_eth_platform_data gplugd_eth_platform_data = {
 158        .port_number = 0,
 159        .phy_addr    = 0,
 160        .speed       = 0, /* Autonagotiation */
 161        .intf        = PHY_INTERFACE_MODE_RMII,
 162        .init        = gplugd_eth_init,
 163};
 164
 165static void __init select_disp_freq(void)
 166{
 167        /* set GPIO 35 & clear GPIO 85 to set LCD External Clock to 74.25 MHz */
 168        if (unlikely(gpio_request(35, "DISP_FREQ_SEL"))) {
 169                printk(KERN_ERR "Can't get hold of GPIO 35 to select display "
 170                                "frequency\n");
 171        } else {
 172                gpio_direction_output(35, 1);
 173                gpio_free(35);
 174        }
 175
 176        if (unlikely(gpio_request(85, "DISP_FREQ_SEL_2"))) {
 177                printk(KERN_ERR "Can't get hold of GPIO 85 to select display "
 178                                "frequency\n");
 179        } else {
 180                gpio_direction_output(85, 0);
 181                gpio_free(85);
 182        }
 183}
 184
 185static void __init gplugd_init(void)
 186{
 187        mfp_config(ARRAY_AND_SIZE(gplugd_pin_config));
 188
 189        select_disp_freq();
 190
 191        /* on-chip devices */
 192        pxa168_add_uart(3);
 193        pxa168_add_ssp(1);
 194        pxa168_add_twsi(0, NULL, ARRAY_AND_SIZE(gplugd_i2c_board_info));
 195        platform_device_add_data(&pxa168_device_gpio, &pxa168_gpio_pdata,
 196                                 sizeof(struct pxa_gpio_platform_data));
 197        platform_device_register(&pxa168_device_gpio);
 198
 199        pxa168_add_eth(&gplugd_eth_platform_data);
 200}
 201
 202MACHINE_START(GPLUGD, "PXA168-based GuruPlug Display (gplugD) Platform")
 203        .map_io         = mmp_map_io,
 204        .nr_irqs        = MMP_NR_IRQS,
 205        .init_irq       = pxa168_init_irq,
 206        .init_time      = pxa168_timer_init,
 207        .init_machine   = gplugd_init,
 208        .restart        = pxa168_restart,
 209MACHINE_END
 210