wwan.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <southbridge/intel/common/gpio.h>
#include <console/console.h>
#include <device/device.h>
#include <ec/acpi/ec.h>
#include <option.h>
#include <types.h>
 
#include "h8.h"
#include "chip.h"
 
/* Controls radio-off pin in WWAN MiniPCIe slot.  */
void h8_wwan_enable(int on)
{
        if (on)
                ec_set_bit(0x3a, 6);
        else
                ec_clr_bit(0x3a, 6);
}
 
/*
 * Detect WWAN on supported MBs.
 */
bool h8_has_wwan(const struct device *dev)
{
        struct ec_lenovo_h8_config *conf = dev->chip_info;
 
        if (!conf->has_wwan_detection) {
                printk(BIOS_INFO, "H8: WWAN detection not implemented. "
                                  "Assuming WWAN installed\n");
                return true;
        }
 
        if (get_gpio(conf->wwan_gpio_num) == conf->wwan_gpio_lvl) {
                printk(BIOS_INFO, "H8: WWAN installed\n");
                return true;
        }
 
        printk(BIOS_INFO, "H8: WWAN not installed\n");
        return false;
}
 
/*
 * Return WWAN NVRAM setting.
 */
bool h8_wwan_nv_enable(void)
{
        return get_uint_option("wwan", true);
}