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8821cu-20210916/platform/platform_hisilicon_hi3798_sdio.c

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2022-11-17 14:26:57 +00:00
/******************************************************************************
*
* Copyright(c) 2017 - 2018 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 <linux/delay.h> /* mdelay() */
#include <mach/hardware.h> /* __io_address(), readl(), writel() */
#include "platform_hisilicon_hi3798_sdio.h" /* HI_S32() and etc. */
typedef enum hi_GPIO_DIR_E {
HI_DIR_OUT = 0,
HI_DIR_IN = 1,
} HI_GPIO_DIR_E;
#define RTL_REG_ON_GPIO (4*8 + 3)
#define REG_BASE_CTRL __io_address(0xf8a20008)
int gpio_wlan_reg_on = RTL_REG_ON_GPIO;
#if 0
module_param(gpio_wlan_reg_on, uint, 0644);
MODULE_PARM_DESC(gpio_wlan_reg_on, "wlan reg_on gpio num (default:gpio4_3)");
#endif
static int hi_gpio_set_value(u32 gpio, u32 value)
{
HI_S32 s32Status;
s32Status = HI_DRV_GPIO_SetDirBit(gpio, HI_DIR_OUT);
if (s32Status != HI_SUCCESS) {
pr_err("gpio(%d) HI_DRV_GPIO_SetDirBit HI_DIR_OUT failed\n",
gpio);
return -1;
}
s32Status = HI_DRV_GPIO_WriteBit(gpio, value);
if (s32Status != HI_SUCCESS) {
pr_err("gpio(%d) HI_DRV_GPIO_WriteBit value(%d) failed\n",
gpio, value);
return -1;
}
return 0;
}
static int hisi_wlan_set_carddetect(bool present)
{
u32 regval;
u32 mask;
#ifndef CONFIG_HISI_SDIO_ID
return;
#endif
pr_info("SDIO ID=%d\n", CONFIG_HISI_SDIO_ID);
#if (CONFIG_HISI_SDIO_ID == 1)
mask = 1;
#elif (CONFIG_HISI_SDIO_ID == 0)
mask = 2;
#endif
regval = readl(REG_BASE_CTRL);
if (present) {
pr_info("====== Card detection to detect SDIO card! ======\n");
/* set card_detect low to detect card */
regval |= mask;
} else {
pr_info("====== Card detection to remove SDIO card! ======\n");
/* set card_detect high to remove card */
regval &= ~(mask);
}
writel(regval, REG_BASE_CTRL);
return 0;
}
/*
* Return:
* 0: power on successfully
* others: power on failed
*/
int platform_wifi_power_on(void)
{
int ret = 0;
hi_gpio_set_value(gpio_wlan_reg_on, 1);
mdelay(100);
hisi_wlan_set_carddetect(1);
mdelay(2000);
pr_info("======== set_carddetect delay 2s! ========\n");
return ret;
}
void platform_wifi_power_off(void)
{
hisi_wlan_set_carddetect(0);
mdelay(100);
hi_gpio_set_value(gpio_wlan_reg_on, 0);
}