usb: dwc2: set parameter values in probe function

So the parameters can be used in both host and gadget modes.
Also consolidate param functions in the core.h
Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/dwc2/core.c

@@ -3044,6 +3044,7 @@ void dwc2_set_parameters(struct dwc2_hsotg *hsotg,
 	dwc2_set_param_uframe_sched(hsotg, params->uframe_sched);
 	dwc2_set_param_external_id_pin_ctl(hsotg, params->external_id_pin_ctl);
 }
+EXPORT_SYMBOL_GPL(dwc2_set_parameters);
 
 /**
  * During device initialization, read various hardware configuration
@@ -3210,6 +3211,24 @@ int dwc2_get_hwparams(struct dwc2_hsotg *hsotg)
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(dwc2_get_hwparams);
+
+/*
+ * Sets all parameters to the given value.
+ *
+ * Assumes that the dwc2_core_params struct contains only integers.
+ */
+void dwc2_set_all_params(struct dwc2_core_params *params, int value)
+{
+	int *p = (int *)params;
+	size_t size = sizeof(*params) / sizeof(*p);
+	int i;
+
+	for (i = 0; i < size; i++)
+		p[i] = value;
+}
+EXPORT_SYMBOL_GPL(dwc2_set_all_params);
+
 
 u16 dwc2_get_otg_version(struct dwc2_hsotg *hsotg)
 {

drivers/usb/dwc2/core.h

@@ -1071,6 +1071,15 @@ extern void dwc2_set_param_ahbcfg(struct dwc2_hsotg *hsotg, int val);
 
 extern void dwc2_set_param_otg_ver(struct dwc2_hsotg *hsotg, int val);
 
+extern void dwc2_set_parameters(struct dwc2_hsotg *hsotg,
+				const struct dwc2_core_params *params);
+
+extern void dwc2_set_all_params(struct dwc2_core_params *params, int value);
+
+extern int dwc2_get_hwparams(struct dwc2_hsotg *hsotg);
+
+
+
 /*
  * Dump core registers and SPRAM
  */
@@ -1119,14 +1128,12 @@ extern int dwc2_hcd_get_frame_number(struct dwc2_hsotg *hsotg);
 extern void dwc2_hcd_disconnect(struct dwc2_hsotg *hsotg);
 extern void dwc2_hcd_start(struct dwc2_hsotg *hsotg);
 #else
-static inline void dwc2_set_all_params(struct dwc2_core_params *params, int value) {}
 static inline int dwc2_hcd_get_frame_number(struct dwc2_hsotg *hsotg)
 { return 0; }
 static inline void dwc2_hcd_disconnect(struct dwc2_hsotg *hsotg) {}
 static inline void dwc2_hcd_start(struct dwc2_hsotg *hsotg) {}
 static inline void dwc2_hcd_remove(struct dwc2_hsotg *hsotg) {}
-static inline int dwc2_hcd_init(struct dwc2_hsotg *hsotg, int irq,
-				const struct dwc2_core_params *params)
+static inline int dwc2_hcd_init(struct dwc2_hsotg *hsotg, int irq)
 { return 0; }
 #endif
 

drivers/usb/dwc2/hcd.c

@@ -2748,8 +2748,6 @@ static void dwc2_hcd_free(struct dwc2_hsotg *hsotg)
 		destroy_workqueue(hsotg->wq_otg);
 	}
 
-	kfree(hsotg->core_params);
-	hsotg->core_params = NULL;
 	del_timer(&hsotg->wkp_timer);
 }
 
@@ -2761,30 +2759,13 @@ static void dwc2_hcd_release(struct dwc2_hsotg *hsotg)
 	dwc2_hcd_free(hsotg);
 }
 
-/*
- * Sets all parameters to the given value.
- *
- * Assumes that the dwc2_core_params struct contains only integers.
- */
-void dwc2_set_all_params(struct dwc2_core_params *params, int value)
-{
-	int *p = (int *)params;
-	size_t size = sizeof(*params) / sizeof(*p);
-	int i;
-
-	for (i = 0; i < size; i++)
-		p[i] = value;
-}
-EXPORT_SYMBOL_GPL(dwc2_set_all_params);
-
 /*
  * Initializes the HCD. This function allocates memory for and initializes the
  * static parts of the usb_hcd and dwc2_hsotg structures. It also registers the
  * USB bus with the core and calls the hc_driver->start() function. It returns
  * a negative error on failure.
  */
-int dwc2_hcd_init(struct dwc2_hsotg *hsotg, int irq,
-		  const struct dwc2_core_params *params)
+int dwc2_hcd_init(struct dwc2_hsotg *hsotg, int irq)
 {
 	struct usb_hcd *hcd;
 	struct dwc2_host_chan *channel;
@@ -2797,12 +2778,6 @@ int dwc2_hcd_init(struct dwc2_hsotg *hsotg, int irq,
 
 	dev_dbg(hsotg->dev, "DWC OTG HCD INIT\n");
 
-	/* Detect config values from hardware */
-	retval = dwc2_get_hwparams(hsotg);
-
-	if (retval)
-		return retval;
-
 	retval = -ENOMEM;
 
 	hcfg = readl(hsotg->regs + HCFG);
@@ -2821,15 +2796,6 @@ int dwc2_hcd_init(struct dwc2_hsotg *hsotg, int irq,
 	hsotg->last_frame_num = HFNUM_MAX_FRNUM;
 #endif
 
-	hsotg->core_params = kzalloc(sizeof(*hsotg->core_params), GFP_KERNEL);
-	if (!hsotg->core_params)
-		goto error1;
-
-	dwc2_set_all_params(hsotg->core_params, -1);
-
-	/* Validate parameter values */
-	dwc2_set_parameters(hsotg, params);
-
 	/* Check if the bus driver or platform code has setup a dma_mask */
 	if (hsotg->core_params->dma_enable > 0 &&
 	    hsotg->dev->dma_mask == NULL) {

drivers/usb/dwc2/hcd.h

@@ -451,13 +451,8 @@ static inline u8 dwc2_hcd_is_pipe_out(struct dwc2_hcd_pipe_info *pipe)
 	return !dwc2_hcd_is_pipe_in(pipe);
 }
 
-extern int dwc2_hcd_init(struct dwc2_hsotg *hsotg, int irq,
-			 const struct dwc2_core_params *params);
+extern int dwc2_hcd_init(struct dwc2_hsotg *hsotg, int irq);
 extern void dwc2_hcd_remove(struct dwc2_hsotg *hsotg);
-extern void dwc2_set_parameters(struct dwc2_hsotg *hsotg,
-				const struct dwc2_core_params *params);
-extern void dwc2_set_all_params(struct dwc2_core_params *params, int value);
-extern int dwc2_get_hwparams(struct dwc2_hsotg *hsotg);
 
 /* Transaction Execution Functions */
 extern enum dwc2_transaction_type dwc2_hcd_select_transactions(

drivers/usb/dwc2/platform.c

@@ -241,6 +241,21 @@ static int dwc2_driver_probe(struct platform_device *dev)
 	spin_lock_init(&hsotg->lock);
 	mutex_init(&hsotg->init_mutex);
 
+	/* Detect config values from hardware */
+	retval = dwc2_get_hwparams(hsotg);
+	if (retval)
+		return retval;
+
+	hsotg->core_params = devm_kzalloc(&dev->dev,
+				sizeof(*hsotg->core_params), GFP_KERNEL);
+	if (!hsotg->core_params)
+		return -ENOMEM;
+
+	dwc2_set_all_params(hsotg->core_params, -1);
+
+	/* Validate parameter values */
+	dwc2_set_parameters(hsotg, params);
+
 	if (hsotg->dr_mode != USB_DR_MODE_HOST) {
 		retval = dwc2_gadget_init(hsotg, irq);
 		if (retval)
@@ -249,7 +264,7 @@ static int dwc2_driver_probe(struct platform_device *dev)
 	}
 
 	if (hsotg->dr_mode != USB_DR_MODE_PERIPHERAL) {
-		retval = dwc2_hcd_init(hsotg, irq, params);
+		retval = dwc2_hcd_init(hsotg, irq);
 		if (retval) {
 			if (hsotg->gadget_enabled)
 				s3c_hsotg_remove(hsotg);