--- zzzz-none-000/linux-3.10.107/drivers/i2c/busses/i2c-designware-platdrv.c	2017-06-27 09:49:32.000000000 +0000
+++ vr9-7490-729/linux-3.10.107/drivers/i2c/busses/i2c-designware-platdrv.c	2021-11-10 11:53:55.000000000 +0000
@@ -25,6 +25,13 @@
  * ----------------------------------------------------------------------------
  *
  */
+ 
+/**
+ * Some part of this file is modified by Ikanos Communications. 
+ *
+ * Copyright (C) 2013-2014 Ikanos Communications.
+ */ 
+ 
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/delay.h>
@@ -43,6 +50,11 @@
 #include <linux/acpi.h>
 #include "i2c-designware-core.h"
 
+#if defined(CONFIG_FUSIV_VX585) && defined(CONFIG_CPU_MIPSR2_IRQ_VI)
+#include <asm/mach-fusiv/vx185_int.h>
+fusiv_irq_params_t      i2c_fusiv_irq;
+#endif
+
 static struct i2c_algorithm i2c_dw_algo = {
 	.master_xfer	= i2c_dw_xfer,
 	.functionality	= i2c_dw_func,
@@ -103,10 +115,11 @@
 	dev = devm_kzalloc(&pdev->dev, sizeof(struct dw_i2c_dev), GFP_KERNEL);
 	if (!dev)
 		return -ENOMEM;
-
+#ifndef CONFIG_FUSIV_VX585
 	dev->base = devm_ioremap_resource(&pdev->dev, mem);
 	if (IS_ERR(dev->base))
 		return PTR_ERR(dev->base);
+#endif
 
 	init_completion(&dev->cmd_complete);
 	mutex_init(&dev->lock);
@@ -114,13 +127,14 @@
 	dev->irq = irq;
 	platform_set_drvdata(pdev, dev);
 
+#ifndef CONFIG_FUSIV_VX585
 	dev->clk = devm_clk_get(&pdev->dev, NULL);
 	dev->get_clk_rate_khz = i2c_dw_get_clk_rate_khz;
 
 	if (IS_ERR(dev->clk))
 		return PTR_ERR(dev->clk);
 	clk_prepare_enable(dev->clk);
-
+#endif
 	dev->functionality =
 		I2C_FUNC_I2C |
 		I2C_FUNC_10BIT_ADDR |
@@ -145,8 +159,19 @@
 		return r;
 
 	i2c_dw_disable_int(dev);
+/* 
+#if defined(CONFIG_FUSIV_VX585) && defined(CONFIG_CPU_MIPSR2_IRQ_VI)
+	i2c_fusiv_irq.ipc_src	=  I2C_INT;
+	i2c_fusiv_irq.priv	=  (void *)dev;
+	r = devm_request_irq(&pdev->dev, dev->irq, i2c_dw_isr, IRQF_SHARED,
+			pdev->name, &i2c_fusiv_irq);
+*/
+#if defined(CONFIG_FUSIV_VX585)
+	r = request_irq(86, i2c_dw_isr, IRQF_SHARED, pdev->name, dev);
+#else
 	r = devm_request_irq(&pdev->dev, dev->irq, i2c_dw_isr, IRQF_SHARED,
 			pdev->name, dev);
+#endif
 	if (r) {
 		dev_err(&pdev->dev, "failure requesting irq %i\n", dev->irq);
 		return r;