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 /*
 156  * Video over HDMI
 157  */
 158 #if defined(CONFIG_VIDEO_IPUV3)
 159 static void enable_hdmi(struct display_info_t const *dev)
 160 {
 161         imx_enable_hdmi_phy();
 162 }
 163
 164 struct display_info_t const displays[] = {
 165         {
 166                 /* HDMI Output */
 167                 .bus    = -1,
 168                 .addr   = 0,
 169                 .pixfmt = IPU_PIX_FMT_RGB24,
 170                 .detect = detect_hdmi,
 171                 .enable = enable_hdmi,
 172                 .mode   = {
 173                         .name           = "HDMI",
 174                         .refresh        = 60,
 175                         .xres           = 1024,
 176                         .yres           = 768,
 177                         .pixclock       = 15385,
 178                         .left_margin    = 220,
 179                         .right_margin   = 40,
 180                         .upper_margin   = 21,
 181                         .lower_margin   = 7,
 182                         .hsync_len      = 60,
 183                         .vsync_len      = 10,
 184                         .sync           = FB_SYNC_EXT,
 185                         .vmode          = FB_VMODE_NONINTERLACED
 186                 }
 187         }
 188 };
 189
 190 size_t display_count = ARRAY_SIZE(displays);
 191
 192 static void setup_display(void)
 193 {
 194         struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
 195         struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
 196
 197         enable_ipu_clock();
 198         imx_setup_hdmi();
 199
 200         /* Turn on LDB0,IPU,IPU DI0 clocks */
 201         setbits_le32(&mxc_ccm->CCGR3, MXC_CCM_CCGR3_LDB_DI0_MASK);
 202
 203         /* set LDB0, LDB1 clk select to 011/011 */
 204         clrsetbits_le32(&mxc_ccm->cs2cdr,
 205                         MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_MASK |
 206                         MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_MASK,
 207                         (3 << MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_OFFSET) |
 208                         (3 << MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_OFFSET));
 209
 210         setbits_le32(&mxc_ccm->cscmr2, MXC_CCM_CSCMR2_LDB_DI0_IPU_DIV);
 211
 212         setbits_le32(&mxc_ccm->chsccdr, CHSCCDR_CLK_SEL_LDB_DI0 <<
 213                      MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_OFFSET);
 214
 215         writel(IOMUXC_GPR2_BGREF_RRMODE_EXTERNAL_RES |
 216                IOMUXC_GPR2_DI1_VS_POLARITY_ACTIVE_HIGH |
 217                IOMUXC_GPR2_DI0_VS_POLARITY_ACTIVE_LOW |
 218                IOMUXC_GPR2_BIT_MAPPING_CH1_SPWG |
 219                IOMUXC_GPR2_DATA_WIDTH_CH1_18BIT |
 220                IOMUXC_GPR2_BIT_MAPPING_CH0_SPWG |
 221                IOMUXC_GPR2_DATA_WIDTH_CH0_18BIT |
 222                IOMUXC_GPR2_LVDS_CH1_MODE_DISABLED |
 223                IOMUXC_GPR2_LVDS_CH0_MODE_ENABLED_DI0,
 224                &iomux->gpr[2]);
 225
 226         clrsetbits_le32(&iomux->gpr[3], IOMUXC_GPR3_LVDS0_MUX_CTL_MASK,
 227                         IOMUXC_GPR3_MUX_SRC_IPU1_DI0 <<
 228                         IOMUXC_GPR3_LVDS0_MUX_CTL_OFFSET);
 229 }
 230 #endif
 231
 232 int board_early_init_f(void)
 233 {
 234 #if defined(CONFIG_VIDEO_IPUV3)
 235         setup_display();
 236 #endif
 237
 238         return 0;
 239 }
 240
 241 int board_init(void)
 242 {
 243         /* address of boot parameters */
 244         gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
 245
 246 #ifdef CONFIG_CMD_SATA
 247         setup_sata();
 248 #endif
 249
 250         return 0;
 251 }
 252
 253 int checkboard(void)
 254 {
 255         puts("Board: Novena 4x\n");
 256         return 0;
 257 }
 258
 259 int dram_init(void)
 260 {
 261         gd->ram_size = imx_ddr_size();
 262         return 0;
 263 }
 264
 265 /* setup board specific PMIC */
 266 int power_init_board(void)
 267 {
 268         struct pmic *p;
 269         u32 reg;
 270         int ret;
 271
 272         power_pfuze100_init(1);
 273         p = pmic_get("PFUZE100");
 274         if (!p)
 275                 return -EINVAL;
 276
 277         ret = pmic_probe(p);
 278         if (ret)
 279                 return ret;
 280
 281         pmic_reg_read(p, PFUZE100_DEVICEID, &reg);
 282         printf("PMIC:  PFUZE100 ID=0x%02x\n", reg);
 283
 284         /* Set SWBST to 5.0V and enable (for USB) */
 285         pmic_reg_read(p, PFUZE100_SWBSTCON1, &reg);
 286         reg &= ~(SWBST_MODE_MASK | SWBST_VOL_MASK);
 287         reg |= (SWBST_5_00V | SWBST_MODE_AUTO);
 288         pmic_reg_write(p, PFUZE100_SWBSTCON1, reg);
 289
 290         return 0;
 291 }
 292
 293 /* EEPROM configuration data */
 294 struct novena_eeprom_data {
 295         uint8_t         signature[6];
 296         uint8_t         version;
 297         uint8_t         reserved;
 298         uint32_t        serial;
 299         uint8_t         mac[6];
 300         uint16_t        features;
 301 };
 302
 303 int misc_init_r(void)
 304 {
 305         struct novena_eeprom_data data;
 306         uchar *datap = (uchar *)&data;
 307         const char *signature = "Novena";
 308         int ret;
 309
 310         /* If 'ethaddr' is already set, do nothing. */
 311         if (getenv("ethaddr"))
 312                 return 0;
 313
 314         /* EEPROM is at bus 2. */
 315         ret = i2c_set_bus_num(2);
 316         if (ret) {
 317                 puts("Cannot select EEPROM I2C bus.\n");
 318                 return 0;
 319         }
 320
 321         /* EEPROM is at address 0x56. */
 322         ret = eeprom_read(0x56, 0, datap, sizeof(data));
 323         if (ret) {
 324                 puts("Cannot read I2C EEPROM.\n");
 325                 return 0;
 326         }
 327
 328         /* Check EEPROM signature. */
 329         if (memcmp(data.signature, signature, 6)) {
 330                 puts("Invalid I2C EEPROM signature.\n");
 331                 return 0;
 332         }
 333
 334         /* Set ethernet address from EEPROM. */
 335         eth_setenv_enetaddr("ethaddr", data.mac);
 336
 337         return ret;
 338 }