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nu11secur1ty
GitHub Repository: nu11secur1ty/Kali-Linux
 Path: blob/master/ALFA-W1F1/RTL8814AU/platform/platform_hisilicon_hi3798_sdio.c
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/******************************************************************************

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 *

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 * Copyright(c) 2017 - 2018 Realtek Corporation.

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 *

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 * This program is free software; you can redistribute it and/or modify it

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 * under the terms of version 2 of the GNU General Public License as

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 * published by the Free Software Foundation.

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 *

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 * This program is distributed in the hope that it will be useful, but WITHOUT

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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

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 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for

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 * more details.

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 *

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 *****************************************************************************/

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#include <linux/delay.h>		/* mdelay() */

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#include <mach/hardware.h>		/* __io_address(), readl(), writel() */

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#include "platform_hisilicon_hi3798_sdio.h"	/* HI_S32() and etc. */

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typedef enum hi_GPIO_DIR_E {

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	HI_DIR_OUT = 0,

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	HI_DIR_IN  = 1,

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} HI_GPIO_DIR_E;

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#define RTL_REG_ON_GPIO		(4*8 + 3)

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#define REG_BASE_CTRL		__io_address(0xf8a20008)

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int gpio_wlan_reg_on = RTL_REG_ON_GPIO;

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#if 0

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module_param(gpio_wlan_reg_on, uint, 0644);

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MODULE_PARM_DESC(gpio_wlan_reg_on, "wlan reg_on gpio num (default:gpio4_3)");

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#endif

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static int hi_gpio_set_value(u32 gpio, u32 value)

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{

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	HI_S32 s32Status;

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	s32Status = HI_DRV_GPIO_SetDirBit(gpio, HI_DIR_OUT);

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	if (s32Status != HI_SUCCESS) {

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		pr_err("gpio(%d) HI_DRV_GPIO_SetDirBit HI_DIR_OUT failed\n",

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			gpio);

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		return -1;

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	}

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	s32Status = HI_DRV_GPIO_WriteBit(gpio, value);

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	if (s32Status != HI_SUCCESS) {

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		pr_err("gpio(%d) HI_DRV_GPIO_WriteBit value(%d) failed\n",

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			gpio, value);

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		return -1;

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	}

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	return 0;

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}

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static int hisi_wlan_set_carddetect(bool present)

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{

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	u32 regval;

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	u32 mask;

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#ifndef CONFIG_HISI_SDIO_ID

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	return;

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#endif

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	pr_info("SDIO ID=%d\n", CONFIG_HISI_SDIO_ID);

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#if (CONFIG_HISI_SDIO_ID == 1)

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	mask = 1;

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#elif (CONFIG_HISI_SDIO_ID == 0)

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	mask = 2;

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#endif

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	regval = readl(REG_BASE_CTRL);

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	if (present) {

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		pr_info("====== Card detection to detect SDIO card! ======\n");

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		/* set card_detect low to detect card */

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		regval |= mask;

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	} else {

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		pr_info("====== Card detection to remove SDIO card! ======\n");

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		/* set card_detect high to remove card */

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		regval &= ~(mask);

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	}

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	writel(regval, REG_BASE_CTRL);

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	return 0;

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}

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/*

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 * Return:

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 *	0:	power on successfully

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 *	others: power on failed

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 */

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int platform_wifi_power_on(void)

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{

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	int ret = 0;

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	hi_gpio_set_value(gpio_wlan_reg_on, 1);

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	mdelay(100);

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	hisi_wlan_set_carddetect(1);

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	mdelay(2000);

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	pr_info("======== set_carddetect delay 2s! ========\n");

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	return ret;

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}

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void platform_wifi_power_off(void)

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{

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	hisi_wlan_set_carddetect(0);

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	mdelay(100);

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	hi_gpio_set_value(gpio_wlan_reg_on, 0);

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}

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