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Commit 00b57acb authored by Rajesh Bharathwaj's avatar Rajesh Bharathwaj
Browse files

tusb1064: enable usb3.1 mode 



This change enables USB3.1 mode or DP mode based on the display mode
command line parameter.

Change-Id: I6fb140e1c0311e4b6ce386c5b725bb59c901651d
Signed-off-by: default avatarRajesh Bharathwaj <rajeshbharathwaj@codeaurora.org>
parent eee689c2

drivers/misc/tusb1064.c

+47 −19
Original line number Diff line number Diff line
@@ -34,6 +34,7 @@ struct tusb1064 { 
};



static struct tusb1064 *pdata;

static bool standalone_mode;



static int tusb1064_read(struct i2c_client *client, u8 reg, char *buf, u32 size)

{
@@ -129,11 +130,16 @@ static int tusb1064_probe(struct i2c_client *client, 
	/*written usb sideEnable 4-lane DP with FLip and enable EQ_OVERRIDe */

	/*tusb1064_write(pdata, 0x0A, 0x12); */



	/*Enable 4-lane DP with FLip and enable EQ_OVERRIDe */

	if (standalone_mode) {

		/*Enable 3.1 USB, no DP */

		if (tusb1064_write(pdata->i2c_client, 0x0A, 0x01) < 0)

			goto fail;

	} else {

		/*Enable 4-lane DP with Flip and enable EQ_OVERRIDe */

		if (tusb1064_write(pdata->i2c_client, 0x0A, 0x02) < 0)

			goto fail;



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

		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;
@@ -147,7 +153,7 @@ static int tusb1064_probe(struct i2c_client *client, 
			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);

	tusb1064_read(pdata->i2c_client, 0x10, buf, 2);
@@ -203,6 +209,28 @@ static struct i2c_driver tusb1064_i2c_driver = { 
	},

	.id_table = tusb1064_id_table,

};



static int __init tusb1064_init(void)

{

	char *cmdline;



	cmdline = strnstr(boot_command_line,

			"msm_drm.dsi_display0=dsi_sim_vid_display",

				strlen(boot_command_line));

	if (cmdline) {

		pr_debug("%s tethered mode cmdline:%s\n",

				__func__, cmdline);

		standalone_mode = false;

	} else {

		pr_debug("%s standalone mode cmdline:%s\n",

				__func__, cmdline);

		standalone_mode = true;

	}



	return 0;

}



device_initcall(tusb1064_init);

module_i2c_driver(tusb1064_i2c_driver);

MODULE_DEVICE_TABLE(i2c, tusb1064_id_table);

MODULE_DESCRIPTION("TUSB1064 USB Bridge");