Commit dff70f7f authored by Martin Kaiser's avatar Martin Kaiser Committed by Greg Kroah-Hartman
Browse files

staging: rtl8188eu: remove efuse write support 



This driver does not need write access to the rtl1888eu chip's efuses.
Remove the code to set the voltages for writing the efuses.

Signed-off-by: default avatarMartin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20210718173610.894-6-martin@kaiser.cx


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 264d3064

drivers/staging/rtl8188eu/core/rtw_efuse.c

+3 −29
Original line number Diff line number Diff line
@@ -16,18 +16,8 @@ 
#define REG_EFUSE_CTRL		0x0030

#define EFUSE_CTRL			REG_EFUSE_CTRL		/*  E-Fuse Control. */



enum{

		VOLTAGE_V25						= 0x03,

		LDOE25_SHIFT						= 28,

	};



/*

 * When we want to enable write operation, we should change to pwr on state.

 * When we stop write, we should switch to 500k mode and disable LDO 2.5V.

 */

static void efuse_power_switch(struct adapter *pAdapter, u8 write, u8 pwrstate)

static void efuse_power_switch(struct adapter *pAdapter, u8 pwrstate)

{

	u8 tempval;

	u16 tmpv16;



	if (pwrstate) {
@@ -52,22 +42,8 @@ static void efuse_power_switch(struct adapter *pAdapter, u8 write, u8 pwrstate) 
			tmpv16 |= (LOADER_CLK_EN | ANA8M);

			usb_write16(pAdapter, REG_SYS_CLKR, tmpv16);

		}



		if (write) {

			/*  Enable LDO 2.5V before read/write action */

			tempval = usb_read8(pAdapter, EFUSE_TEST + 3);

			tempval &= 0x0F;

			tempval |= (VOLTAGE_V25 << 4);

			usb_write8(pAdapter, EFUSE_TEST + 3, (tempval | 0x80));

		}

	} else {

		usb_write8(pAdapter, REG_EFUSE_ACCESS, EFUSE_ACCESS_OFF);



		if (write) {

			/*  Disable LDO 2.5V after read/write action */

			tempval = usb_read8(pAdapter, EFUSE_TEST + 3);

			usb_write8(pAdapter, EFUSE_TEST + 3, (tempval & 0x7F));

		}

	}

}
@@ -857,11 +833,9 @@ void efuse_WordEnableDataRead(u8 word_en, u8 *sourdata, u8 *targetdata) 
/* Read All Efuse content */

static void Efuse_ReadAllMap(struct adapter *pAdapter, u8 *Efuse)

{

	efuse_power_switch(pAdapter, false, true);



	efuse_power_switch(pAdapter, true);

	efuse_ReadEFuse(pAdapter, 0, EFUSE_MAP_LEN_88E, Efuse);



	efuse_power_switch(pAdapter, false, false);

	efuse_power_switch(pAdapter, false);

}



/* Transfer current EFUSE content to shadow init and modify map. */