redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

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: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
hifive-unleashed-5.1
Felipe Balbi 2017-06-09 13:20:42 +03:00 committed by Kishon Vijay Abraham I
parent 82d9d5e0c0
commit 54fe308889
1 changed files with 35 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

35
drivers/phy/ti/phy-tusb1210.c
View File

@ -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,
};