[U-Boot] [PATCH 4/5] usb: s3c-otg: Allow custom gusbcfg

[Marek Vasut]

Allow passing in a custom configuration of the gusbcfg register
via platform data.

Signed-off-by: Marek Vasut <marex at denx.de>
Cc: Chin Liang See <clsee at altera.com>
Cc: Dinh Nguyen <dinguyen at opensource.altera.com>
Cc: Vince Bridgers <vbridger at altera.com>
Cc: Pavel Machek <pavel at denx.de>
Cc: Stefan Roese <sr at denx.de>
Cc: Lukasz Majewski <l.majewski at samsung.com>
---
 drivers/usb/gadget/s3c_udc_otg.c          | 18 ++++++++++++------
 drivers/usb/gadget/s3c_udc_otg_xfer_dma.c |  2 +-
 include/usb/s3c_udc.h                     |  1 +
 3 files changed, 14 insertions(+), 7 deletions(-)

diff --git a/drivers/usb/gadget/s3c_udc_otg.c b/drivers/usb/gadget/s3c_udc_otg.c
index b910053..7653f03 100644
--- a/drivers/usb/gadget/s3c_udc_otg.c
+++ b/drivers/usb/gadget/s3c_udc_otg.c
@@ -104,7 +104,7 @@ static void stop_activity(struct s3c_udc *dev,
 			  struct usb_gadget_driver *driver);
 static int udc_enable(struct s3c_udc *dev);
 static void udc_set_address(struct s3c_udc *dev, unsigned char address);
-static void reconfig_usbd(void);
+static void reconfig_usbd(struct s3c_udc *dev);
 static void set_max_pktsize(struct s3c_udc *dev, enum usb_device_speed speed);
 static void nuke(struct s3c_ep *ep, int status);
 static int s3c_udc_set_halt(struct usb_ep *_ep, int value);
@@ -215,7 +215,7 @@ static int udc_enable(struct s3c_udc *dev)
 	debug_cond(DEBUG_SETUP != 0, "%s: %p\n", __func__, dev);
 
 	otg_phy_init(dev);
-	reconfig_usbd();
+	reconfig_usbd(dev);
 
 	debug_cond(DEBUG_SETUP != 0,
 		   "S3C USB 2.0 OTG Controller Core Initialized : 0x%x\n",
@@ -396,15 +396,17 @@ static void stop_activity(struct s3c_udc *dev,
 	udc_reinit(dev);
 }
 
-static void reconfig_usbd(void)
+static void reconfig_usbd(struct s3c_udc *dev)
 {
 	/* 2. Soft-reset OTG Core and then unreset again. */
 	int i;
 	unsigned int uTemp = writel(CORE_SOFT_RESET, &reg->grstctl);
+	uint32_t dflt_gusbcfg;
 
 	debug("Reseting OTG controller\n");
 
-	writel(0<<15		/* PHY Low Power Clock sel*/
+	dflt_gusbcfg =
+		0<<15		/* PHY Low Power Clock sel*/
 		|1<<14		/* Non-Periodic TxFIFO Rewind Enable*/
 		|0x5<<10	/* Turnaround time*/
 		|0<<9 | 0<<8	/* [0:HNP disable,1:HNP enable][ 0:SRP disable*/
@@ -413,8 +415,12 @@ static void reconfig_usbd(void)
 		|0<<6		/* 0: high speed utmi+, 1: full speed serial*/
 		|0<<4		/* 0: utmi+, 1:ulpi*/
 		|1<<3		/* phy i/f  0:8bit, 1:16bit*/
-		|0x7<<0,	/* HS/FS Timeout**/
-		&reg->gusbcfg);
+		|0x7<<0;	/* HS/FS Timeout**/
+
+	if (dev->pdata->usb_gusbcfg)
+		dflt_gusbcfg = dev->pdata->usb_gusbcfg;
+
+	writel(dflt_gusbcfg, &reg->gusbcfg);
 
 	/* 3. Put the OTG device core in the disconnected state.*/
 	uTemp = readl(&reg->dctl);
diff --git a/drivers/usb/gadget/s3c_udc_otg_xfer_dma.c b/drivers/usb/gadget/s3c_udc_otg_xfer_dma.c
index 4f69b22..9c54b46 100644
--- a/drivers/usb/gadget/s3c_udc_otg_xfer_dma.c
+++ b/drivers/usb/gadget/s3c_udc_otg_xfer_dma.c
@@ -551,7 +551,7 @@ static int s3c_udc_irq(int irq, void *_dev)
 				debug_cond(DEBUG_ISR,
 					"\t\tOTG core got reset (%d)!!\n",
 					reset_available);
-				reconfig_usbd();
+				reconfig_usbd(dev);
 				dev->ep0state = WAIT_FOR_SETUP;
 				reset_available = 0;
 				s3c_udc_pre_setup();
diff --git a/include/usb/s3c_udc.h b/include/usb/s3c_udc.h
index 70e48f8..7f49a4e 100644
--- a/include/usb/s3c_udc.h
+++ b/include/usb/s3c_udc.h
@@ -108,5 +108,6 @@ struct s3c_plat_otg_data {
 	unsigned int	regs_otg;
 	unsigned int    usb_phy_ctrl;
 	unsigned int    usb_flags;
+	unsigned int	usb_gusbcfg;
 };
 #endif
-- 
2.0.0