src/ec/lenovo/h8/wwan.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <southbridge/intel/common/gpio.h>
   4 #include <console/console.h>
   5 #include <device/device.h>
   6 #include <ec/acpi/ec.h>
   7 #include <option.h>
   8 #include <types.h>
   9
  10 #include "h8.h"
  11 #include "chip.h"
  12
  13 /* Controls radio-off pin in WWAN MiniPCIe slot.  */
  14 void h8_wwan_enable(int on)
  15 {
  16         if (on)
  17                 ec_set_bit(0x3a, 6);
  18         else
  19                 ec_clr_bit(0x3a, 6);
  20 }
  21
  22 /*
  23  * Detect WWAN on supported MBs.
  24  */
  25 bool h8_has_wwan(const struct device *dev)
  26 {
  27         struct ec_lenovo_h8_config *conf = dev->chip_info;
  28
  29         if (!conf->has_wwan_detection) {
  30                 printk(BIOS_INFO, "H8: WWAN detection not implemented. "
  31                                   "Assuming WWAN installed\n");
  32                 return true;
  33         }
  34
  35         if (get_gpio(conf->wwan_gpio_num) == conf->wwan_gpio_lvl) {
  36                 printk(BIOS_INFO, "H8: WWAN installed\n");
  37                 return true;
  38         }
  39
  40         printk(BIOS_INFO, "H8: WWAN not installed\n");
  41         return false;
  42 }
  43
  44 /*
  45  * Return WWAN NVRAM setting.
  46  */
  47 bool h8_wwan_nv_enable(void)
  48 {
  49         return get_uint_option("wwan", true);
  50 }