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
  13 #include <asm/mach/arch.h>
  14 #include <asm/mach-types.h>
  15
  16 #include <mach/gpio.h>
  17 #include <mach/pxa168.h>
  18 #include <mach/mfp-pxa168.h>
  19 #include <mach/mfp-gplugd.h>
  20
  21 #include "common.h"
  22
  23 static unsigned long gplugd_pin_config[] __initdata = {
  24         /* UART3 */
  25         GPIO8_UART3_SOUT,
  26         GPIO9_UART3_SIN,
  27         GPI1O_UART3_CTS,
  28         GPI11_UART3_RTS,
  29
  30         /* MMC2 */
  31         GPIO28_MMC2_CMD,
  32         GPIO29_MMC2_CLK,
  33         GPIO30_MMC2_DAT0,
  34         GPIO31_MMC2_DAT1,
  35         GPIO32_MMC2_DAT2,
  36         GPIO33_MMC2_DAT3,
  37
  38         /* LCD & HDMI clock selection GPIO: 0: 74.176MHz, 1: 74.25 MHz */
  39         GPIO35_GPIO,
  40         GPIO36_GPIO, /* CEC Interrupt */
  41
  42         /* MMC1 */
  43         GPIO43_MMC1_CLK,
  44         GPIO49_MMC1_CMD,
  45         GPIO41_MMC1_DAT0,
  46         GPIO40_MMC1_DAT1,
  47         GPIO52_MMC1_DAT2,
  48         GPIO51_MMC1_DAT3,
  49         GPIO53_MMC1_CD,
  50
  51         /* LCD */
  52         GPIO56_LCD_FCLK_RD,
  53         GPIO57_LCD_LCLK_A0,
  54         GPIO58_LCD_PCLK_WR,
  55         GPIO59_LCD_DENA_BIAS,
  56         GPIO60_LCD_DD0,
  57         GPIO61_LCD_DD1,
  58         GPIO62_LCD_DD2,
  59         GPIO63_LCD_DD3,
  60         GPIO64_LCD_DD4,
  61         GPIO65_LCD_DD5,
  62         GPIO66_LCD_DD6,
  63         GPIO67_LCD_DD7,
  64         GPIO68_LCD_DD8,
  65         GPIO69_LCD_DD9,
  66         GPIO70_LCD_DD10,
  67         GPIO71_LCD_DD11,
  68         GPIO72_LCD_DD12,
  69         GPIO73_LCD_DD13,
  70         GPIO74_LCD_DD14,
  71         GPIO75_LCD_DD15,
  72         GPIO76_LCD_DD16,
  73         GPIO77_LCD_DD17,
  74         GPIO78_LCD_DD18,
  75         GPIO79_LCD_DD19,
  76         GPIO80_LCD_DD20,
  77         GPIO81_LCD_DD21,
  78         GPIO82_LCD_DD22,
  79         GPIO83_LCD_DD23,
  80
  81         /* GPIO */
  82         GPIO84_GPIO,
  83         GPIO85_GPIO,
  84
  85         /* Fast-Ethernet*/
  86         GPIO86_TX_CLK,
  87         GPIO87_TX_EN,
  88         GPIO88_TX_DQ3,
  89         GPIO89_TX_DQ2,
  90         GPIO90_TX_DQ1,
  91         GPIO91_TX_DQ0,
  92         GPIO92_MII_CRS,
  93         GPIO93_MII_COL,
  94         GPIO94_RX_CLK,
  95         GPIO95_RX_ER,
  96         GPIO96_RX_DQ3,
  97         GPIO97_RX_DQ2,
  98         GPIO98_RX_DQ1,
  99         GPIO99_RX_DQ0,
 100         GPIO100_MII_MDC,
 101         GPIO101_MII_MDIO,
 102         GPIO103_RX_DV,
 103         GPIO104_GPIO,     /* Reset PHY */
 104
 105         /* RTC interrupt */
 106         GPIO102_GPIO,
 107
 108         /* I2C */
 109         GPIO105_CI2C_SDA,
 110         GPIO106_CI2C_SCL,
 111
 112         /* Select JTAG */
 113         GPIO109_GPIO,
 114
 115         /* I2S */
 116         GPIO114_I2S_FRM,
 117         GPIO115_I2S_BCLK,
 118         GPIO116_I2S_TXD
 119 };
 120
 121 static struct i2c_board_info gplugd_i2c_board_info[] = {
 122         {
 123                 .type = "isl1208",
 124                 .addr = 0x6F,
 125         }
 126 };
 127
 128 /* Bring PHY out of reset by setting GPIO 104 */
 129 static int gplugd_eth_init(void)
 130 {
 131         if (unlikely(gpio_request(104, "ETH_RESET_N"))) {
 132                 printk(KERN_ERR "Can't get hold of GPIO 104 to bring Ethernet "
 133                                 "PHY out of reset\n");
 134                 return -EIO;
 135         }
 136
 137         gpio_direction_output(104, 1);
 138         gpio_free(104);
 139         return 0;
 140 }
 141
 142 struct pxa168_eth_platform_data gplugd_eth_platform_data = {
 143         .port_number = 0,
 144         .phy_addr    = 0,
 145         .speed       = 0, /* Autonagotiation */
 146         .init        = gplugd_eth_init,
 147 };
 148
 149 static void __init select_disp_freq(void)
 150 {
 151         /* set GPIO 35 & clear GPIO 85 to set LCD External Clock to 74.25 MHz */
 152         if (unlikely(gpio_request(35, "DISP_FREQ_SEL"))) {
 153                 printk(KERN_ERR "Can't get hold of GPIO 35 to select display "
 154                                 "frequency\n");
 155         } else {
 156                 gpio_direction_output(35, 1);
 157                 gpio_free(104);
 158         }
 159
 160         if (unlikely(gpio_request(85, "DISP_FREQ_SEL_2"))) {
 161                 printk(KERN_ERR "Can't get hold of GPIO 85 to select display "
 162                                 "frequency\n");
 163         } else {
 164                 gpio_direction_output(85, 0);
 165                 gpio_free(104);
 166         }
 167 }
 168
 169 static void __init gplugd_init(void)
 170 {
 171         mfp_config(ARRAY_AND_SIZE(gplugd_pin_config));
 172
 173         select_disp_freq();
 174
 175         /* on-chip devices */
 176         pxa168_add_uart(3);
 177         pxa168_add_ssp(0);
 178         pxa168_add_twsi(0, NULL, ARRAY_AND_SIZE(gplugd_i2c_board_info));
 179
 180         pxa168_add_eth(&gplugd_eth_platform_data);
 181 }
 182
 183 MACHINE_START(SHEEVAD, "PXA168-based GuruPlug Display (gplugD) Platform")
 184         .map_io         = mmp_map_io,
 185         .nr_irqs        = IRQ_BOARD_START,
 186         .init_irq       = pxa168_init_irq,
 187         .timer          = &pxa168_timer,
 188         .init_machine   = gplugd_init,
 189 MACHINE_END