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 <asm/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/imx-common/boot_mode.h>
  20 #include <asm/imx-common/iomux-v3.h>
  21 #include <asm/imx-common/mxc_i2c.h>
  22 #include <asm/imx-common/sata.h>
  23 #include <asm/imx-common/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 | DEV_FLAGS_SYSTEM,
  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         button_input.read_keys = novena_gpio_button_read_keys;
  92
  93         error = input_stdio_register(&dev);
  94         if (error)
  95                 return error;
  96
  97         return 0;
  98 }
  99 #endif
 100
 101 /*
 102  * SDHC
 103  */
 104 #ifdef CONFIG_FSL_ESDHC
 105 static struct fsl_esdhc_cfg usdhc_cfg[] = {
 106         { USDHC3_BASE_ADDR, 0, 4 },     /* Micro SD */
 107         { USDHC2_BASE_ADDR, 0, 4 },     /* Big SD */
 108 };
 109
 110 int board_mmc_getcd(struct mmc *mmc)
 111 {
 112         struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
 113
 114         /* There is no CD for a microSD card, assume always present. */
 115         if (cfg->esdhc_base == USDHC3_BASE_ADDR)
 116                 return 1;
 117         else
 118                 return !gpio_get_value(NOVENA_SD_CD);
 119 }
 120
 121 int board_mmc_getwp(struct mmc *mmc)
 122 {
 123         struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
 124
 125         /* There is no WP for a microSD card, assume always read-write. */
 126         if (cfg->esdhc_base == USDHC3_BASE_ADDR)
 127                 return 0;
 128         else
 129                 return gpio_get_value(NOVENA_SD_WP);
 130 }
 131
 132
 133 int board_mmc_init(bd_t *bis)
 134 {
 135         s32 status = 0;
 136         int index;
 137
 138         usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
 139         usdhc_cfg[1].sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK);
 140
 141         /* Big SD write-protect and card-detect */
 142         gpio_direction_input(NOVENA_SD_WP);
 143         gpio_direction_input(NOVENA_SD_CD);
 144
 145         for (index = 0; index < ARRAY_SIZE(usdhc_cfg); index++) {
 146                 status = fsl_esdhc_initialize(bis, &usdhc_cfg[index]);
 147                 if (status)
 148                         return status;
 149         }
 150
 151         return status;
 152 }
 153 #endif
 154
 155 int board_early_init_f(void)
 156 {
 157 #if defined(CONFIG_VIDEO_IPUV3)
 158         setup_display_clock();
 159 #endif
 160
 161         return 0;
 162 }
 163
 164 int board_init(void)
 165 {
 166         /* address of boot parameters */
 167         gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
 168
 169 #ifdef CONFIG_CMD_SATA
 170         setup_sata();
 171 #endif
 172
 173         return 0;
 174 }
 175
 176 int board_late_init(void)
 177 {
 178 #if defined(CONFIG_VIDEO_IPUV3)
 179         setup_display_lvds();
 180 #endif
 181         return 0;
 182 }
 183
 184 int checkboard(void)
 185 {
 186         puts("Board: Novena 4x\n");
 187         return 0;
 188 }
 189
 190 int dram_init(void)
 191 {
 192         gd->ram_size = imx_ddr_size();
 193         return 0;
 194 }
 195
 196 /* setup board specific PMIC */
 197 int power_init_board(void)
 198 {
 199         struct pmic *p;
 200         u32 reg;
 201         int ret;
 202
 203         power_pfuze100_init(1);
 204         p = pmic_get("PFUZE100");
 205         if (!p)
 206                 return -EINVAL;
 207
 208         ret = pmic_probe(p);
 209         if (ret)
 210                 return ret;
 211
 212         pmic_reg_read(p, PFUZE100_DEVICEID, &reg);
 213         printf("PMIC:  PFUZE100 ID=0x%02x\n", reg);
 214
 215         /* Set SWBST to 5.0V and enable (for USB) */
 216         pmic_reg_read(p, PFUZE100_SWBSTCON1, &reg);
 217         reg &= ~(SWBST_MODE_MASK | SWBST_VOL_MASK);
 218         reg |= (SWBST_5_00V | SWBST_MODE_AUTO);
 219         pmic_reg_write(p, PFUZE100_SWBSTCON1, reg);
 220
 221         return 0;
 222 }
 223
 224 /* EEPROM configuration data */
 225 struct novena_eeprom_data {
 226         uint8_t         signature[6];
 227         uint8_t         version;
 228         uint8_t         reserved;
 229         uint32_t        serial;
 230         uint8_t         mac[6];
 231         uint16_t        features;
 232 };
 233
 234 int misc_init_r(void)
 235 {
 236         struct novena_eeprom_data data;
 237         uchar *datap = (uchar *)&data;
 238         const char *signature = "Novena";
 239         int ret;
 240
 241         /* If 'ethaddr' is already set, do nothing. */
 242         if (getenv("ethaddr"))
 243                 return 0;
 244
 245         /* EEPROM is at bus 2. */
 246         ret = i2c_set_bus_num(2);
 247         if (ret) {
 248                 puts("Cannot select EEPROM I2C bus.\n");
 249                 return 0;
 250         }
 251
 252         /* EEPROM is at address 0x56. */
 253         ret = eeprom_read(0x56, 0, datap, sizeof(data));
 254         if (ret) {
 255                 puts("Cannot read I2C EEPROM.\n");
 256                 return 0;
 257         }
 258
 259         /* Check EEPROM signature. */
 260         if (memcmp(data.signature, signature, 6)) {
 261                 puts("Invalid I2C EEPROM signature.\n");
 262                 return 0;
 263         }
 264
 265         /* Set ethernet address from EEPROM. */
 266         eth_setenv_enetaddr("ethaddr", data.mac);
 267
 268         return ret;
 269 }