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/gpio.h>
  13
  14 #include <asm/mach/arch.h>
  15 #include <asm/mach-types.h>
  16
  17 #include <mach/pxa168.h>
  18 #include <mach/mfp-pxa168.h>
  19
  20 #include "common.h"
  21
  22 static unsigned long gplugd_pin_config[] __initdata = {
  23         /* UART3 */
  24         GPIO8_UART3_TXD,
  25         GPIO9_UART3_RXD,
  26         GPIO1O_UART3_CTS,
  27         GPIO11_UART3_RTS,
  28
  29         /* USB OTG PEN */
  30         GPIO18_GPIO,
  31
  32         /* MMC2 */
  33         GPIO28_MMC2_CMD,
  34         GPIO29_MMC2_CLK,
  35         GPIO30_MMC2_DAT0,
  36         GPIO31_MMC2_DAT1,
  37         GPIO32_MMC2_DAT2,
  38         GPIO33_MMC2_DAT3,
  39
  40         /* LCD & HDMI clock selection GPIO: 0: 74.176MHz, 1: 74.25 MHz */
  41         GPIO35_GPIO,
  42         GPIO36_GPIO, /* CEC Interrupt */
  43
  44         /* MMC1 */
  45         GPIO43_MMC1_CLK,
  46         GPIO49_MMC1_CMD,
  47         GPIO41_MMC1_DAT0,
  48         GPIO40_MMC1_DAT1,
  49         GPIO52_MMC1_DAT2,
  50         GPIO51_MMC1_DAT3,
  51         GPIO53_MMC1_CD,
  52
  53         /* LCD */
  54         GPIO56_LCD_FCLK_RD,
  55         GPIO57_LCD_LCLK_A0,
  56         GPIO58_LCD_PCLK_WR,
  57         GPIO59_LCD_DENA_BIAS,
  58         GPIO60_LCD_DD0,
  59         GPIO61_LCD_DD1,
  60         GPIO62_LCD_DD2,
  61         GPIO63_LCD_DD3,
  62         GPIO64_LCD_DD4,
  63         GPIO65_LCD_DD5,
  64         GPIO66_LCD_DD6,
  65         GPIO67_LCD_DD7,
  66         GPIO68_LCD_DD8,
  67         GPIO69_LCD_DD9,
  68         GPIO70_LCD_DD10,
  69         GPIO71_LCD_DD11,
  70         GPIO72_LCD_DD12,
  71         GPIO73_LCD_DD13,
  72         GPIO74_LCD_DD14,
  73         GPIO75_LCD_DD15,
  74         GPIO76_LCD_DD16,
  75         GPIO77_LCD_DD17,
  76         GPIO78_LCD_DD18,
  77         GPIO79_LCD_DD19,
  78         GPIO80_LCD_DD20,
  79         GPIO81_LCD_DD21,
  80         GPIO82_LCD_DD22,
  81         GPIO83_LCD_DD23,
  82
  83         /* GPIO */
  84         GPIO84_GPIO,
  85         GPIO85_GPIO,
  86
  87         /* Fast-Ethernet*/
  88         GPIO86_TX_CLK,
  89         GPIO87_TX_EN,
  90         GPIO88_TX_DQ3,
  91         GPIO89_TX_DQ2,
  92         GPIO90_TX_DQ1,
  93         GPIO91_TX_DQ0,
  94         GPIO92_MII_CRS,
  95         GPIO93_MII_COL,
  96         GPIO94_RX_CLK,
  97         GPIO95_RX_ER,
  98         GPIO96_RX_DQ3,
  99         GPIO97_RX_DQ2,
 100         GPIO98_RX_DQ1,
 101         GPIO99_RX_DQ0,
 102         GPIO100_MII_MDC,
 103         GPIO101_MII_MDIO,
 104         GPIO103_RX_DV,
 105         GPIO104_GPIO,     /* Reset PHY */
 106
 107         /* RTC interrupt */
 108         GPIO102_GPIO,
 109
 110         /* I2C */
 111         GPIO105_CI2C_SDA,
 112         GPIO106_CI2C_SCL,
 113
 114         /* SPI NOR Flash on SSP2 */
 115         GPIO107_SSP2_RXD,
 116         GPIO108_SSP2_TXD,
 117         GPIO110_GPIO,     /* SPI_CSn */
 118         GPIO111_SSP2_CLK,
 119
 120         /* Select JTAG */
 121         GPIO109_GPIO,
 122
 123         /* I2S */
 124         GPIO114_I2S_FRM,
 125         GPIO115_I2S_BCLK,
 126         GPIO116_I2S_TXD
 127 };
 128
 129 static struct i2c_board_info gplugd_i2c_board_info[] = {
 130         {
 131                 .type = "isl1208",
 132                 .addr = 0x6F,
 133         }
 134 };
 135
 136 /* Bring PHY out of reset by setting GPIO 104 */
 137 static int gplugd_eth_init(void)
 138 {
 139         if (unlikely(gpio_request(104, "ETH_RESET_N"))) {
 140                 printk(KERN_ERR "Can't get hold of GPIO 104 to bring Ethernet "
 141                                 "PHY out of reset\n");
 142                 return -EIO;
 143         }
 144
 145         gpio_direction_output(104, 1);
 146         gpio_free(104);
 147         return 0;
 148 }
 149
 150 struct pxa168_eth_platform_data gplugd_eth_platform_data = {
 151         .port_number = 0,
 152         .phy_addr    = 0,
 153         .speed       = 0, /* Autonagotiation */
 154         .init        = gplugd_eth_init,
 155 };
 156
 157 static void __init select_disp_freq(void)
 158 {
 159         /* set GPIO 35 & clear GPIO 85 to set LCD External Clock to 74.25 MHz */
 160         if (unlikely(gpio_request(35, "DISP_FREQ_SEL"))) {
 161                 printk(KERN_ERR "Can't get hold of GPIO 35 to select display "
 162                                 "frequency\n");
 163         } else {
 164                 gpio_direction_output(35, 1);
 165                 gpio_free(35);
 166         }
 167
 168         if (unlikely(gpio_request(85, "DISP_FREQ_SEL_2"))) {
 169                 printk(KERN_ERR "Can't get hold of GPIO 85 to select display "
 170                                 "frequency\n");
 171         } else {
 172                 gpio_direction_output(85, 0);
 173                 gpio_free(85);
 174         }
 175 }
 176
 177 static void __init gplugd_init(void)
 178 {
 179         mfp_config(ARRAY_AND_SIZE(gplugd_pin_config));
 180
 181         select_disp_freq();
 182
 183         /* on-chip devices */
 184         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         pxa168_add_eth(&gplugd_eth_platform_data);
 190 }
 191
 192 MACHINE_START(GPLUGD, "PXA168-based GuruPlug Display (gplugD) Platform")
 193         .map_io         = mmp_map_io,
 194         .nr_irqs        = IRQ_BOARD_START,
 195         .init_irq       = pxa168_init_irq,
 196         .timer          = &pxa168_timer,
 197         .init_machine   = gplugd_init,
 198         .restart        = pxa168_restart,
 199 MACHINE_END