src/mainboard/lenovo/s230u/mainboard.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <device/device.h>
   4 #include <console/console.h>
   5 #include <drivers/intel/gma/int15.h>
   6 #include <ec/acpi/ec.h>
   7 #include <southbridge/intel/common/gpio.h>
   8 #include <string.h>
   9 #include <smbios.h>
  10 #include "ec.h"
  11
  12 #include <acpi/acpi.h>
  13
  14 static u8 mainboard_fill_ec_version(char *buf, u8 buf_len)
  15 {
  16         u8 i, c;
  17         char str[16 + 1]; /* 16 ASCII chars + \0 */
  18
  19         /* Build ID */
  20         for (i = 0; i < 8; i++) {
  21                 c = ec_mm_read(0xf0 + i);
  22                 if (c < 0x20 || c > 0x7f) {
  23                         i = snprintf(str, sizeof(str), "*INVALID");
  24                         break;
  25                 }
  26                 str[i] = c;
  27         }
  28
  29         i = MIN(buf_len, i);
  30         memcpy(buf, str, i);
  31
  32         return i;
  33 }
  34
  35 static void mainboard_smbios_strings(
  36         struct device *dev, struct smbios_type11 *t)
  37 {
  38         char tpec[] = "IBM ThinkPad Embedded Controller -[                 ]-";
  39         u16 fwvh, fwvl;
  40
  41         mainboard_fill_ec_version(tpec + 35, 17);
  42         t->count = smbios_add_string(t->eos, tpec);
  43
  44         /* Apparently byteswapped compared to H8 */
  45         fwvh = ec_mm_read(0xe8);
  46         fwvl = ec_mm_read(0xe9);
  47
  48         printk(BIOS_INFO, "EC Firmware ID %.54s, Version %d.%d%d%c\n", tpec,
  49                fwvh >> 4, fwvh & 0x0f, fwvl >> 4, 0x41 + (fwvl & 0xf));
  50 }
  51
  52 static void mainboard_enable(struct device *dev)
  53 {
  54         dev->ops->get_smbios_strings = mainboard_smbios_strings;
  55
  56         install_intel_vga_int15_handler(
  57                 GMA_INT15_ACTIVE_LFP_INT_LVDS,
  58                 GMA_INT15_PANEL_FIT_DEFAULT,
  59                 GMA_INT15_BOOT_DISPLAY_DEFAULT,
  60                 0);
  61
  62         if (!acpi_is_wakeup_s3())
  63                 lenovo_s230u_ec_init();
  64 }
  65
  66 struct chip_operations mainboard_ops = {
  67         .enable_dev = mainboard_enable,
  68 };