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Commit 7a0a670f authored by Rajesh Bharathwaj's avatar Rajesh Bharathwaj
Browse files

tusb1064: handlle cc1/cc2 direction 



Added code to program TUSB1064 chip to handle CC1/CC2 cable insertions.

Change-Id: I19e15e88a75811b67ca69cfb27577bdf15bda9d6
Signed-off-by: default avatarRajesh Bharathwaj <rajeshbharathwaj@codeaurora.org>
parent 60ae8e45

drivers/misc/tusb1064.c

+11 −21
Original line number Diff line number Diff line
@@ -23,6 +23,7 @@ 
#include <linux/kernel.h>

#include <linux/gpio.h>

#include <linux/delay.h>

#include "tusb1064.h"



struct tusb1064 {

	struct device *dev;
@@ -80,21 +81,23 @@ static int tusb1064_write(struct i2c_client *client, u8 reg, u8 val) 
	return 0;

}



void tusb1064_flip(bool flip)

void tusb1064_usb_event(bool flip)

{

	if (pdata) {

		if (flip) {

			pr_debug("%s flipping the switch\n", __func__);

			/*AUXn->SBU2, AUXp->SBU1*/

			tusb1064_write(pdata->i2c_client, 0x13, 0x2F);

			if (standalone_mode)

				tusb1064_write(pdata->i2c_client, 0x0A, 0x05);

			else

				tusb1064_write(pdata->i2c_client, 0x0A, 0x06);

		} else {

			pr_debug("%s not flipping the switch\n", __func__);

			/*AUXn->SBU2, AUXp->SBU1*/

			tusb1064_write(pdata->i2c_client, 0x13, 0x1F);

			if (standalone_mode)

				tusb1064_write(pdata->i2c_client, 0x0A, 0x01);

			else

				tusb1064_write(pdata->i2c_client, 0x0A, 0x02);

		}

	}

}

EXPORT_SYMBOL(tusb1064_flip);

EXPORT_SYMBOL(tusb1064_usb_event);



static int tusb1064_probe(struct i2c_client *client,

	const struct i2c_device_id *id)
@@ -140,19 +143,6 @@ static int tusb1064_probe(struct i2c_client *client, 
			goto fail;



		pr_debug("%s setting SBU1 to AUXN, SBU2 to AUXP\n", __func__);

		/*AUXn->SBU2, AUXp->SBU1 */

		if (tusb1064_write(pdata->i2c_client, 0x13, 0x1F) < 0)

			goto fail;

		//tusb1064_write(pdata, 0x13, 0x01);//AUXn->SBU1, AUXp->SBU2



		/*Enable 4-lane DP */

		if (tusb1064_write(pdata->i2c_client, 0x10, 0x55) < 0)

			goto fail;

		/*Enable 4-lane DP */

		if (tusb1064_write(pdata->i2c_client, 0x11, 0x55) < 0)

			goto fail;

		//pr_err("setting SBU1 to AUXp and SBU2 to AUXN\n");

		//tusb1064_write(pdata, 0x13, 0x8F);//Enable 4-lane DP

	}

	tusb1064_read(pdata->i2c_client, 0x0A, buf, 2);

	tusb1064_read(pdata->i2c_client, 0x13, buf, 2);

drivers/misc/tusb1064.h

0 → 100644
+18 −0
Original line number Diff line number Diff line 
/* Copyright (c) 2020 The Linux Foundation. All rights reserved.

 *

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

 * it under the terms of the GNU General Public License version 2 and

 * only version 2 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.

 */



#ifndef __TUSB1064_H_

#define __TUSB1064_H_



void tusb1064_usb_event(bool flip);



#endif /* __TUSB1064_H_ */