usb: gadget: lpc32xx_udc: Fix compatibility with STOTG04

The STOTG04 is an replacement for ISP1301.

Most of the registers on STOTG04 are the same as on ISP1301, but the
register ISP1301_I2C_OTG_CONTROL_2 (address 0x10) doesn't exist on the
ST part.

This is a work around for this by using the interrupt source register that
should behave the same on both parts and has the needed information.

Tested-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: Alexandre Pereira da Silva <aletes.xgr@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/usb/gadget/lpc32xx_udc.c b/drivers/usb/gadget/lpc32xx_udc.c
index f696fb9b136d..21a9861dabf0 100644
--- a/drivers/usb/gadget/lpc32xx_udc.c
+++ b/drivers/usb/gadget/lpc32xx_udc.c
@@ -2930,10 +2930,10 @@ static void vbus_work(struct work_struct *work)
 
                 /* Get the VBUS status from the transceiver */
                 value = i2c_smbus_read_byte_data(udc->isp1301_i2c_client,
-                                                 ISP1301_I2C_OTG_CONTROL_2);
+                                                 ISP1301_I2C_INTERRUPT_SOURCE);
 
                 /* VBUS on or off? */
-                if (value & OTG_B_SESS_VLD)
+                if (value & INT_SESS_VLD)
                         udc->vbus = 1;
                 else
                         udc->vbus = 0;