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Commit 54fe3088 authored by Felipe Balbi's avatar Felipe Balbi Committed by Kishon Vijay Abraham I
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phy: tusb1210: implement ->set_mode() 



->set_mode() can be used to tell PHY to prepare itself to enter USB
Host/Peripheral mode and that's very important for DRD
configurations.

Signed-off-by: default avatarFelipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: default avatarKishon Vijay Abraham I <kishon@ti.com>
parent 82d9d5e0

drivers/phy/ti/phy-tusb1210.c

+35 −0
Original line number Diff line number Diff line
@@ -11,6 +11,7 @@ 
 */

#include <linux/module.h>

#include <linux/ulpi/driver.h>

#include <linux/ulpi/regs.h>

#include <linux/gpio/consumer.h>

#include <linux/phy/ulpi_phy.h>
@@ -52,9 +53,43 @@ static int tusb1210_power_off(struct phy *phy) 
	return 0;

}



static int tusb1210_set_mode(struct phy *phy, enum phy_mode mode)

{

	struct tusb1210 *tusb = phy_get_drvdata(phy);

	int ret;



	ret = ulpi_read(tusb->ulpi, ULPI_OTG_CTRL);

	if (ret < 0)

		return ret;



	switch (mode) {

	case PHY_MODE_USB_HOST:

		ret |= (ULPI_OTG_CTRL_DRVVBUS_EXT

			| ULPI_OTG_CTRL_ID_PULLUP

			| ULPI_OTG_CTRL_DP_PULLDOWN

			| ULPI_OTG_CTRL_DM_PULLDOWN);

		ulpi_write(tusb->ulpi, ULPI_OTG_CTRL, ret);

		ret |= ULPI_OTG_CTRL_DRVVBUS;

		break;

	case PHY_MODE_USB_DEVICE:

		ret &= ~(ULPI_OTG_CTRL_DRVVBUS

			 | ULPI_OTG_CTRL_DP_PULLDOWN

			 | ULPI_OTG_CTRL_DM_PULLDOWN);

		ulpi_write(tusb->ulpi, ULPI_OTG_CTRL, ret);

		ret &= ~ULPI_OTG_CTRL_DRVVBUS_EXT;

		break;

	default:

		/* nothing */

		return 0;

	}



	return ulpi_write(tusb->ulpi, ULPI_OTG_CTRL, ret);

}



static const struct phy_ops phy_ops = {

	.power_on = tusb1210_power_on,

	.power_off = tusb1210_power_off,

	.set_mode = tusb1210_set_mode,

	.owner = THIS_MODULE,

};