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8821cu-20210916/platform/platform_ARM_WMT_sdio.c

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2022-11-17 14:26:57 +00:00
/******************************************************************************
*
* Copyright(c) 2013 - 2017 Realtek Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
*****************************************************************************/
#include <drv_types.h>
#include <mach/wmt_iomux.h>
#include <linux/gpio.h>
extern void wmt_detect_sdio2(void);
extern void force_remove_sdio2(void);
int platform_wifi_power_on(void)
{
int err = 0;
err = gpio_request(WMT_PIN_GP62_SUSGPIO1, "wifi_chip_en");
if (err < 0) {
printk("request gpio for rtl8188eu failed!\n");
return err;
}
gpio_direction_output(WMT_PIN_GP62_SUSGPIO1, 0);/* pull sus_gpio1 to 0 to open vcc_wifi. */
printk("power on rtl8189.\n");
msleep(500);
wmt_detect_sdio2();
printk("[rtl8189es] %s: new card, power on.\n", __FUNCTION__);
return err;
}
void platform_wifi_power_off(void)
{
force_remove_sdio2();
gpio_direction_output(WMT_PIN_GP62_SUSGPIO1, 1);/* pull sus_gpio1 to 1 to close vcc_wifi. */
printk("power off rtl8189.\n");
gpio_free(WMT_PIN_GP62_SUSGPIO1);
printk("[rtl8189es] %s: remove card, power off.\n", __FUNCTION__);
}