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