target/linux/ar71xx/files/arch/mips/ath79/mach-alfa-ap96.c

   1 /*
   2  *  ALFA Network AP96 board support
   3  *
   4  *  Copyright (C) 2012 Gabor Juhos <juhosg@openwrt.org>
   5  *
   6  *  This program is free software; you can redistribute it and/or modify it
   7  *  under the terms of the GNU General Public License version 2 as published
   8  *  by the Free Software Foundation.
   9  */
  10
  11 #include <linux/init.h>
  12 #include <linux/bitops.h>
  13 #include <linux/gpio.h>
  14 #include <linux/platform_device.h>
  15 #include <linux/mmc/host.h>
  16 #include <linux/spi/spi.h>
  17 #include <linux/spi/mmc_spi.h>
  18
  19 #include <asm/mach-ath79/ath79.h>
  20 #include <asm/mach-ath79/ar71xx_regs.h>
  21
  22 #include "common.h"
  23 #include "dev-eth.h"
  24 #include "dev-gpio-buttons.h"
  25 #include "dev-spi.h"
  26 #include "dev-usb.h"
  27 #include "machtypes.h"
  28 #include "pci.h"
  29
  30 #define ALFA_AP96_GPIO_PCIE_RESET       2
  31 #define ALFA_AP96_GPIO_SIM_DETECT       3
  32 #define ALFA_AP96_GPIO_MICROSD_CD       4
  33 #define ALFA_AP96_GPIO_PCIE_W_DISABLE   5
  34
  35 #define ALFA_AP96_GPIO_BUTTON_RESET     11
  36
  37 #define ALFA_AP96_KEYS_POLL_INTERVAL            20      /* msecs */
  38 #define ALFA_AP96_KEYS_DEBOUNCE_INTERVAL        (3 * ALFA_AP96_KEYS_POLL_INTERVAL)
  39
  40 static struct gpio_keys_button alfa_ap96_gpio_keys[] __initdata = {
  41         {
  42                 .desc           = "Reset button",
  43                 .type           = EV_KEY,
  44                 .code           = KEY_RESTART,
  45                 .debounce_interval = ALFA_AP96_KEYS_DEBOUNCE_INTERVAL,
  46                 .gpio           = ALFA_AP96_GPIO_BUTTON_RESET,
  47                 .active_low     = 1,
  48         }
  49 };
  50
  51 static int alfa_ap96_mmc_get_cd(struct device *dev)
  52 {
  53         return !gpio_get_value(ALFA_AP96_GPIO_MICROSD_CD);
  54 }
  55
  56 static struct mmc_spi_platform_data alfa_ap96_mmc_data = {
  57         .get_cd         = alfa_ap96_mmc_get_cd,
  58         .caps           = MMC_CAP_NEEDS_POLL,
  59         .ocr_mask       = MMC_VDD_32_33 | MMC_VDD_33_34,
  60 };
  61
  62 static struct ath79_spi_controller_data ap96_spi0_cdata = {
  63         .cs_type = ATH79_SPI_CS_TYPE_INTERNAL,
  64         .cs_line = 0,
  65 };
  66
  67 static struct ath79_spi_controller_data ap96_spi1_cdata = {
  68         .cs_type = ATH79_SPI_CS_TYPE_INTERNAL,
  69         .cs_line = 1,
  70 };
  71
  72 static struct ath79_spi_controller_data ap96_spi2_cdata = {
  73         .cs_type = ATH79_SPI_CS_TYPE_INTERNAL,
  74         .cs_line = 2,
  75 };
  76
  77 static struct spi_board_info alfa_ap96_spi_info[] = {
  78         {
  79                 .bus_num        = 0,
  80                 .chip_select    = 0,
  81                 .max_speed_hz   = 25000000,
  82                 .modalias       = "m25p80",
  83                 .controller_data = &ap96_spi0_cdata
  84         }, {
  85                 .bus_num        = 0,
  86                 .chip_select    = 1,
  87                 .max_speed_hz   = 25000000,
  88                 .modalias       = "mmc_spi",
  89                 .platform_data  = &alfa_ap96_mmc_data,
  90                 .controller_data = &ap96_spi1_cdata
  91         }, {
  92                 .bus_num        = 0,
  93                 .chip_select    = 2,
  94                 .max_speed_hz   = 6250000,
  95                 .modalias       = "rtc-pcf2123",
  96                 .controller_data = &ap96_spi2_cdata
  97         },
  98 };
  99
 100 static struct ath79_spi_platform_data alfa_ap96_spi_data = {
 101         .bus_num                = 0,
 102         .num_chipselect         = 3,
 103 };
 104
 105 static void __init alfa_ap96_gpio_setup(void)
 106 {
 107         ath79_gpio_function_enable(AR71XX_GPIO_FUNC_SPI_CS1_EN |
 108                                    AR71XX_GPIO_FUNC_SPI_CS2_EN);
 109
 110         gpio_request(ALFA_AP96_GPIO_MICROSD_CD, "microSD CD");
 111         gpio_direction_input(ALFA_AP96_GPIO_MICROSD_CD);
 112         gpio_request(ALFA_AP96_GPIO_PCIE_RESET, "PCIe reset");
 113         gpio_direction_output(ALFA_AP96_GPIO_PCIE_RESET, 1);
 114         gpio_request(ALFA_AP96_GPIO_PCIE_W_DISABLE, "PCIe write disable");
 115         gpio_direction_output(ALFA_AP96_GPIO_PCIE_W_DISABLE, 1);
 116 }
 117
 118 #define ALFA_AP96_WAN_PHYMASK   BIT(4)
 119 #define ALFA_AP96_LAN_PHYMASK   BIT(5)
 120 #define ALFA_AP96_MDIO_PHYMASK  (ALFA_AP96_LAN_PHYMASK | ALFA_AP96_WAN_PHYMASK)
 121
 122 static void __init alfa_ap96_init(void)
 123 {
 124         alfa_ap96_gpio_setup();
 125
 126         ath79_register_mdio(0, ~ALFA_AP96_MDIO_PHYMASK);
 127
 128         ath79_init_mac(ath79_eth0_data.mac_addr, ath79_mac_base, 0);
 129         ath79_eth0_data.phy_if_mode = PHY_INTERFACE_MODE_RGMII;
 130         ath79_eth0_data.phy_mask = ALFA_AP96_WAN_PHYMASK;
 131         ath79_eth1_pll_data.pll_1000 = 0x110000;
 132
 133         ath79_register_eth(0);
 134
 135         ath79_init_mac(ath79_eth1_data.mac_addr, ath79_mac_base, 1);
 136         ath79_eth1_data.phy_if_mode = PHY_INTERFACE_MODE_RGMII;
 137         ath79_eth1_data.phy_mask = ALFA_AP96_LAN_PHYMASK;
 138         ath79_eth1_pll_data.pll_1000 = 0x110000;
 139
 140         ath79_register_eth(1);
 141
 142         ath79_register_pci();
 143         ath79_register_spi(&alfa_ap96_spi_data, alfa_ap96_spi_info,
 144                            ARRAY_SIZE(alfa_ap96_spi_info));
 145
 146         ath79_register_gpio_keys_polled(-1, ALFA_AP96_KEYS_POLL_INTERVAL,
 147                                          ARRAY_SIZE(alfa_ap96_gpio_keys),
 148                                          alfa_ap96_gpio_keys);
 149         ath79_register_usb();
 150 }
 151
 152 MIPS_MACHINE(ATH79_MACH_ALFA_AP96, "ALFA-AP96", "ALFA Network AP96",
 153              alfa_ap96_init);