X-Git-Url: http://plrg.eecs.uci.edu/git/?p=firefly-linux-kernel-4.4.55.git;a=blobdiff_plain;f=drivers%2Fusb%2Fdwc_otg_310%2Fusbdev_rk3368.c;h=3272e4e99c5fcdd604c1c7f9be0d9e40f1cef616;hp=c7521a9cf9c65d3dc87949f914a900aa0a16f1ea;hb=9a47b6de548a83d198e2a92b53fe735c62832515;hpb=03b9f4949fd4c2f8813b1e8ab4546c5ff54edac5

diff --git a/drivers/usb/dwc_otg_310/usbdev_rk3368.c b/drivers/usb/dwc_otg_310/usbdev_rk3368.c
index c7521a9cf9c6..3272e4e99c5f 100644
--- a/drivers/usb/dwc_otg_310/usbdev_rk3368.c
+++ b/drivers/usb/dwc_otg_310/usbdev_rk3368.c
@@ -1,3 +1,4 @@
+#ifdef CONFIG_ARM64
 #include "usbdev_rk.h"
 #include "dwc_otg_regs.h"
 
@@ -22,6 +23,9 @@ static void usb20otg_hw_init(void)
 	/* Turn off differential receiver in suspend mode */
 	uoc_write(UOC_HIWORD_UPDATE(0, 1, 2), 0x798);
 
+	/* Set disconnect detection trigger point to 625mv */
+	uoc_write(UOC_HIWORD_UPDATE(0x9, 0xf, 11), 0x79c);
+
 	/* other haredware init,include:
 	 * DRV_VBUS GPIO init */
 	if (gpio_is_valid(control_usb->otg_gpios->gpio))
@@ -31,10 +35,9 @@ static void usb20otg_hw_init(void)
 static void usb20otg_phy_suspend(void *pdata, int suspend)
 {
 	struct dwc_otg_platform_data *usbpdata = pdata;
-
 	if (suspend) {
 		/* enable soft control */
-		uoc_write(UOC_HIWORD_UPDATE(0x55, 0x7f, 0), 0x700);
+		uoc_write(UOC_HIWORD_UPDATE(0x1d5, 0x1ff, 0), 0x700);
 		usbpdata->phy_status = 1;
 	} else {
 		/* exit suspend */
@@ -76,7 +79,16 @@ static void usb20otg_soft_reset(void *pdata, enum rkusb_rst_flag rst_type)
 		reset_control_deassert(rst_otg_c);
 		reset_control_deassert(rst_otg_h);
 		break;
-
+	case RST_CHN_HALT:
+		/* PHY reset */
+		uoc_write(UOC_HIWORD_UPDATE(0x1, 0x3, 0), 0x700);
+		reset_control_assert(rst_otg_p);
+		udelay(15);
+		uoc_write(UOC_HIWORD_UPDATE(0x2, 0x3, 0), 0x700);
+		udelay(1500);
+		reset_control_deassert(rst_otg_p);
+		udelay(2);
+		break;
 	default:
 		break;
 	}
@@ -87,15 +99,15 @@ static void usb20otg_clock_init(void *pdata)
 	struct dwc_otg_platform_data *usbpdata = pdata;
 	struct clk *ahbclk, *phyclk;
 
-	ahbclk = devm_clk_get(usbpdata->dev, "hclk_otg");
+	ahbclk = devm_clk_get(usbpdata->dev, "otg");
 	if (IS_ERR(ahbclk)) {
-		dev_err(usbpdata->dev, "Failed to get hclk_usb0\n");
+		dev_err(usbpdata->dev, "Failed to get otg clk\n");
 		return;
 	}
 
-	phyclk = devm_clk_get(usbpdata->dev, "clk_usbphy0");
+	phyclk = devm_clk_get(usbpdata->dev, "sclk_otgphy0");
 	if (IS_ERR(phyclk)) {
-		dev_err(usbpdata->dev, "Failed to get clk_usbphy0\n");
+		dev_err(usbpdata->dev, "Failed to get sclk_otgphy0\n");
 		return;
 	}
 
@@ -119,7 +131,7 @@ static void usb20otg_clock_enable(void *pdata, int enable)
 static int usb20otg_get_status(int id)
 {
 	int ret = -1;
-	u32 soc_status15 = uoc_read(0x4bc);
+	u32 soc_status15 = uoc_read(control_usb->grf_otg_st_offset);
 
 	switch (id) {
 	case USB_STATUS_BVABLID:
@@ -177,10 +189,15 @@ static void usb20otg_power_enable(int enable)
 		/* disable otg_drv power */
 		if (gpio_is_valid(control_usb->otg_gpios->gpio))
 			gpio_set_value(control_usb->otg_gpios->gpio, 0);
+
+		rk_battery_charger_detect_cb(USB_OTG_POWER_OFF);
 	} else if (1 == enable) {
 		/* enable otg_drv power */
 		if (gpio_is_valid(control_usb->otg_gpios->gpio))
 			gpio_set_value(control_usb->otg_gpios->gpio, 1);
+
+		if (!usb20otg_get_status(USB_STATUS_BVABLID))
+			rk_battery_charger_detect_cb(USB_OTG_POWER_ON);
 	}
 }
 
@@ -206,8 +223,8 @@ static void usb20ehci_hw_init(void)
 {
 	/* Turn off differential receiver in suspend mode */
 	uoc_write(UOC_HIWORD_UPDATE(0, 1, 2), 0x7b8);
-	/* Set disconnect detection trigger point to 600mv */
-	uoc_write(UOC_HIWORD_UPDATE(1, 0xf, 11), 0x7bc);
+	/* Set disconnect detection trigger point to 625mv */
+	uoc_write(UOC_HIWORD_UPDATE(0x9, 0xf, 11), 0x7bc);
 
 	/* other haredware init,include:
 	 * DRV_VBUS GPIO init */
@@ -388,6 +405,7 @@ static int dwc_otg_control_usb_probe(struct platform_device *pdev)
 	struct clk *hclk_usb_peri;
 	struct regmap *grf;
 	int gpio, ret = 0;
+	u32 offset;
 
 	control_usb = devm_kzalloc(dev, sizeof(*control_usb), GFP_KERNEL);
 	if (!control_usb) {
@@ -403,6 +421,14 @@ static int dwc_otg_control_usb_probe(struct platform_device *pdev)
 	}
 	control_usb->grf = grf;
 
+	/* get the reg offset of GRF_SOC_STATUS for USB2.0 OTG */
+	if (of_property_read_u32(np, "grf-offset", &offset)) {
+		dev_err(&pdev->dev, "missing reg property in node %s\n",
+			np->name);
+		return -EINVAL;
+	}
+	control_usb->grf_otg_st_offset = offset;
+
 	/* Init Vbus-drv GPIOs */
 	control_usb->host_gpios =
 	    devm_kzalloc(&pdev->dev, sizeof(struct gpio), GFP_KERNEL);
@@ -452,8 +478,8 @@ static int dwc_otg_control_usb_probe(struct platform_device *pdev)
 	/* Init hclk_usb_peri */
 	hclk_usb_peri = devm_clk_get(&pdev->dev, "hclk_usb_peri");
 	if (IS_ERR(hclk_usb_peri)) {
-		dev_err(&pdev->dev, "Failed to get hclk_usb_peri\n");
-		return PTR_ERR(hclk_usb_peri);
+		dev_info(&pdev->dev, "no hclk_usb_peri clk specified\n");
+		hclk_usb_peri = NULL;
 	}
 	control_usb->hclk_usb_peri = hclk_usb_peri;
 	clk_prepare_enable(hclk_usb_peri);
@@ -514,3 +540,4 @@ MODULE_ALIAS("platform: dwc_control_usb");
 MODULE_AUTHOR("RockChip Inc.");
 MODULE_DESCRIPTION("RockChip Control Module USB Driver");
 MODULE_LICENSE("GPL v2");
+#endif