board/amazon/kc1/kc1.c

   1 /*
   2  * Amazon Kindle Fire (first generation) codename kc1 config
   3  *
   4  * Copyright (C) 2016 Paul Kocialkowski <contact@paulk.fr>
   5  *
   6  * SPDX-License-Identifier:     GPL-2.0+
   7  */
   8
   9 #include <config.h>
  10 #include <common.h>
  11 #include <linux/ctype.h>
  12 #include <linux/usb/musb.h>
  13 #include <asm/omap_musb.h>
  14 #include <asm/arch/sys_proto.h>
  15 #include <asm/arch/mmc_host_def.h>
  16 #include <asm/gpio.h>
  17 #include <asm/emif.h>
  18 #include <twl6030.h>
  19 #include "kc1.h"
  20 #include <asm/mach-types.h>
  21
  22 DECLARE_GLOBAL_DATA_PTR;
  23
  24 const struct omap_sysinfo sysinfo = {
  25         .board_string = "kc1"
  26 };
  27
  28 static struct musb_hdrc_config musb_config = {
  29         .multipoint = 1,
  30         .dyn_fifo = 1,
  31         .num_eps = 16,
  32         .ram_bits = 12
  33 };
  34
  35 static struct omap_musb_board_data musb_board_data = {
  36         .interface_type = MUSB_INTERFACE_UTMI,
  37 };
  38
  39 static struct musb_hdrc_platform_data musb_platform_data = {
  40         .mode = MUSB_PERIPHERAL,
  41         .config = &musb_config,
  42         .power = 100,
  43         .platform_ops = &omap2430_ops,
  44         .board_data = &musb_board_data,
  45 };
  46
  47
  48 void set_muxconf_regs(void)
  49 {
  50         do_set_mux((*ctrl)->control_padconf_core_base, core_padconf_array,
  51                 sizeof(core_padconf_array) / sizeof(struct pad_conf_entry));
  52 }
  53
  54 struct lpddr2_device_details *emif_get_device_details(u32 emif_nr, u8 cs,
  55         struct lpddr2_device_details *lpddr2_dev_details)
  56 {
  57         if (cs == CS1)
  58                 return NULL;
  59
  60         *lpddr2_dev_details = elpida_2G_S4_details;
  61
  62         return lpddr2_dev_details;
  63 }
  64
  65 void emif_get_device_timings(u32 emif_nr,
  66         const struct lpddr2_device_timings **cs0_device_timings,
  67         const struct lpddr2_device_timings **cs1_device_timings)
  68 {
  69         *cs0_device_timings = &elpida_2G_S4_timings;
  70         *cs1_device_timings = NULL;
  71 }
  72
  73 int board_init(void)
  74 {
  75         /* GPMC init */
  76         gpmc_init();
  77
  78         /* MACH number */
  79         gd->bd->bi_arch_number = MACH_TYPE_OMAP_4430SDP;
  80
  81         /* ATAGs location */
  82         gd->bd->bi_boot_params = OMAP44XX_DRAM_ADDR_SPACE_START + 0x100;
  83
  84         return 0;
  85 }
  86
  87 int misc_init_r(void)
  88 {
  89         char reboot_mode[2] = { 0 };
  90         u32 data = 0;
  91         u32 value;
  92         int rc;
  93
  94         /* Reboot mode */
  95
  96         rc = omap_reboot_mode(reboot_mode, sizeof(reboot_mode));
  97
  98         /* USB ID pin pull-up indicates factory (fastboot) cable detection. */
  99         gpio_request(KC1_GPIO_USB_ID, "USB_ID");
 100         gpio_direction_input(KC1_GPIO_USB_ID);
 101         value = gpio_get_value(KC1_GPIO_USB_ID);
 102
 103         if (value)
 104                 reboot_mode[0] = 'b';
 105
 106         if (rc < 0 || reboot_mode[0] == 'o') {
 107                 /*
 108                  * When not rebooting, valid power on reasons are either the
 109                  * power button, charger plug or USB plug.
 110                  */
 111
 112                 data |= twl6030_input_power_button();
 113                 data |= twl6030_input_charger();
 114                 data |= twl6030_input_usb();
 115
 116                 if (!data)
 117                         twl6030_power_off();
 118         }
 119
 120         if (reboot_mode[0] > 0 && isascii(reboot_mode[0])) {
 121                 if (!getenv("reboot-mode"))
 122                         env_set("reboot-mode", (char *)reboot_mode);
 123         }
 124
 125         omap_reboot_mode_clear();
 126
 127         /* Serial number */
 128
 129         omap_die_id_serial();
 130
 131         /* MUSB */
 132
 133         musb_register(&musb_platform_data, &musb_board_data, (void *)MUSB_BASE);
 134
 135         return 0;
 136 }
 137
 138 u32 get_board_rev(void)
 139 {
 140         u32 value = 0;
 141
 142         gpio_request(KC1_GPIO_MBID0, "MBID0");
 143         gpio_request(KC1_GPIO_MBID1, "MBID1");
 144         gpio_request(KC1_GPIO_MBID2, "MBID2");
 145         gpio_request(KC1_GPIO_MBID3, "MBID3");
 146
 147         gpio_direction_input(KC1_GPIO_MBID0);
 148         gpio_direction_input(KC1_GPIO_MBID1);
 149         gpio_direction_input(KC1_GPIO_MBID2);
 150         gpio_direction_input(KC1_GPIO_MBID3);
 151
 152         value |= (gpio_get_value(KC1_GPIO_MBID0) << 0);
 153         value |= (gpio_get_value(KC1_GPIO_MBID1) << 1);
 154         value |= (gpio_get_value(KC1_GPIO_MBID2) << 2);
 155         value |= (gpio_get_value(KC1_GPIO_MBID3) << 3);
 156
 157         return value;
 158 }
 159
 160 void get_board_serial(struct tag_serialnr *serialnr)
 161 {
 162         omap_die_id_get_board_serial(serialnr);
 163 }
 164
 165 int fb_set_reboot_flag(void)
 166 {
 167         return omap_reboot_mode_store("b");
 168 }
 169
 170 int board_mmc_init(bd_t *bis)
 171 {
 172         return omap_mmc_init(1, 0, 0, -1, -1);
 173 }
 174
 175 void board_mmc_power_init(void)
 176 {
 177         twl6030_power_mmc_init(1);
 178 }