board/kosagi/novena/novena.c

   1 /*
   2  * Novena board support
   3  *
   4  * Copyright (C) 2014 Marek Vasut <marex@denx.de>
   5  *
   6  * SPDX-License-Identifier:     GPL-2.0+
   7  */
   8
   9 #include <common.h>
  10 #include <linux/errno.h>
  11 #include <asm/gpio.h>
  12 #include <asm/io.h>
  13 #include <asm/arch/clock.h>
  14 #include <asm/arch/crm_regs.h>
  15 #include <asm/arch/imx-regs.h>
  16 #include <asm/arch/iomux.h>
  17 #include <asm/arch/mxc_hdmi.h>
  18 #include <asm/arch/sys_proto.h>
  19 #include <asm/mach-imx/boot_mode.h>
  20 #include <asm/mach-imx/iomux-v3.h>
  21 #include <asm/mach-imx/mxc_i2c.h>
  22 #include <asm/mach-imx/sata.h>
  23 #include <asm/mach-imx/video.h>
  24 #include <fsl_esdhc.h>
  25 #include <i2c.h>
  26 #include <input.h>
  27 #include <ipu_pixfmt.h>
  28 #include <linux/fb.h>
  29 #include <linux/input.h>
  30 #include <malloc.h>
  31 #include <micrel.h>
  32 #include <miiphy.h>
  33 #include <mmc.h>
  34 #include <netdev.h>
  35 #include <power/pmic.h>
  36 #include <power/pfuze100_pmic.h>
  37 #include <stdio_dev.h>
  38
  39 #include "novena.h"
  40
  41 DECLARE_GLOBAL_DATA_PTR;
  42
  43 /*
  44  * GPIO button
  45  */
  46 #ifdef CONFIG_KEYBOARD
  47 static struct input_config button_input;
  48
  49 static int novena_gpio_button_read_keys(struct input_config *input)
  50 {
  51         int key = KEY_ENTER;
  52         if (gpio_get_value(NOVENA_BUTTON_GPIO))
  53                 return 0;
  54         input_send_keycodes(&button_input, &key, 1);
  55         return 1;
  56 }
  57
  58 static int novena_gpio_button_getc(struct stdio_dev *dev)
  59 {
  60         return input_getc(&button_input);
  61 }
  62
  63 static int novena_gpio_button_tstc(struct stdio_dev *dev)
  64 {
  65         return input_tstc(&button_input);
  66 }
  67
  68 static int novena_gpio_button_init(struct stdio_dev *dev)
  69 {
  70         gpio_direction_input(NOVENA_BUTTON_GPIO);
  71         input_set_delays(&button_input, 250, 250);
  72         return 0;
  73 }
  74
  75 int drv_keyboard_init(void)
  76 {
  77         int error;
  78         struct stdio_dev dev = {
  79                 .name   = "button",
  80                 .flags  = DEV_FLAGS_INPUT,
  81                 .start  = novena_gpio_button_init,
  82                 .getc   = novena_gpio_button_getc,
  83                 .tstc   = novena_gpio_button_tstc,
  84         };
  85
  86         error = input_init(&button_input, 0);
  87         if (error) {
  88                 debug("%s: Cannot set up input\n", __func__);
  89                 return -1;
  90         }
  91         input_add_tables(&button_input, false);
  92         button_input.read_keys = novena_gpio_button_read_keys;
  93
  94         error = input_stdio_register(&dev);
  95         if (error)
  96                 return error;
  97
  98         return 0;
  99 }
 100 #endif
 101
 102 /*
 103  * SDHC
 104  */
 105 #ifdef CONFIG_FSL_ESDHC
 106 static struct fsl_esdhc_cfg usdhc_cfg[] = {
 107         { USDHC3_BASE_ADDR, 0, 4 },     /* Micro SD */
 108         { USDHC2_BASE_ADDR, 0, 4 },     /* Big SD */
 109 };
 110
 111 int board_mmc_getcd(struct mmc *mmc)
 112 {
 113         struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
 114
 115         /* There is no CD for a microSD card, assume always present. */
 116         if (cfg->esdhc_base == USDHC3_BASE_ADDR)
 117                 return 1;
 118         else
 119                 return !gpio_get_value(NOVENA_SD_CD);
 120 }
 121
 122 int board_mmc_getwp(struct mmc *mmc)
 123 {
 124         struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
 125
 126         /* There is no WP for a microSD card, assume always read-write. */
 127         if (cfg->esdhc_base == USDHC3_BASE_ADDR)
 128                 return 0;
 129         else
 130                 return gpio_get_value(NOVENA_SD_WP);
 131 }
 132
 133
 134 int board_mmc_init(bd_t *bis)
 135 {
 136         s32 status = 0;
 137         int index;
 138
 139         usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
 140         usdhc_cfg[1].sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK);
 141
 142         /* Big SD write-protect and card-detect */
 143         gpio_direction_input(NOVENA_SD_WP);
 144         gpio_direction_input(NOVENA_SD_CD);
 145
 146         for (index = 0; index < ARRAY_SIZE(usdhc_cfg); index++) {
 147                 status = fsl_esdhc_initialize(bis, &usdhc_cfg[index]);
 148                 if (status)
 149                         return status;
 150         }
 151
 152         return status;
 153 }
 154 #endif
 155
 156 int board_early_init_f(void)
 157 {
 158 #if defined(CONFIG_VIDEO_IPUV3)
 159         setup_display_clock();
 160 #endif
 161
 162         return 0;
 163 }
 164
 165 int board_init(void)
 166 {
 167         /* address of boot parameters */
 168         gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
 169
 170 #ifdef CONFIG_SATA
 171         setup_sata();
 172 #endif
 173
 174         return 0;
 175 }
 176
 177 int board_late_init(void)
 178 {
 179 #if defined(CONFIG_VIDEO_IPUV3)
 180         setup_display_lvds();
 181 #endif
 182         return 0;
 183 }
 184
 185 int checkboard(void)
 186 {
 187         puts("Board: Novena 4x\n");
 188         return 0;
 189 }
 190
 191 int dram_init(void)
 192 {
 193         gd->ram_size = imx_ddr_size();
 194         return 0;
 195 }
 196
 197 /* setup board specific PMIC */
 198 int power_init_board(void)
 199 {
 200         struct pmic *p;
 201         u32 reg;
 202         int ret;
 203
 204         power_pfuze100_init(1);
 205         p = pmic_get("PFUZE100");
 206         if (!p)
 207                 return -EINVAL;
 208
 209         ret = pmic_probe(p);
 210         if (ret)
 211                 return ret;
 212
 213         pmic_reg_read(p, PFUZE100_DEVICEID, &reg);
 214         printf("PMIC:  PFUZE100 ID=0x%02x\n", reg);
 215
 216         /* Set SWBST to 5.0V and enable (for USB) */
 217         pmic_reg_read(p, PFUZE100_SWBSTCON1, &reg);
 218         reg &= ~(SWBST_MODE_MASK | SWBST_VOL_MASK);
 219         reg |= (SWBST_5_00V | (SWBST_MODE_AUTO << SWBST_MODE_SHIFT));
 220         pmic_reg_write(p, PFUZE100_SWBSTCON1, reg);
 221
 222         return 0;
 223 }
 224
 225 /* EEPROM configuration data */
 226 struct novena_eeprom_data {
 227         uint8_t         signature[6];
 228         uint8_t         version;
 229         uint8_t         reserved;
 230         uint32_t        serial;
 231         uint8_t         mac[6];
 232         uint16_t        features;
 233 };
 234
 235 int misc_init_r(void)
 236 {
 237         struct novena_eeprom_data data;
 238         uchar *datap = (uchar *)&data;
 239         const char *signature = "Novena";
 240         int ret;
 241
 242         /* If 'ethaddr' is already set, do nothing. */
 243         if (getenv("ethaddr"))
 244                 return 0;
 245
 246         /* EEPROM is at bus 2. */
 247         ret = i2c_set_bus_num(2);
 248         if (ret) {
 249                 puts("Cannot select EEPROM I2C bus.\n");
 250                 return 0;
 251         }
 252
 253         /* EEPROM is at address 0x56. */
 254         ret = eeprom_read(0x56, 0, datap, sizeof(data));
 255         if (ret) {
 256                 puts("Cannot read I2C EEPROM.\n");
 257                 return 0;
 258         }
 259
 260         /* Check EEPROM signature. */
 261         if (memcmp(data.signature, signature, 6)) {
 262                 puts("Invalid I2C EEPROM signature.\n");
 263                 return 0;
 264         }
 265
 266         /* Set ethernet address from EEPROM. */
 267         eth_setenv_enetaddr("ethaddr", data.mac);
 268
 269         return ret;
 270 }