ENGR00218771 mx6 USB:USB disconnect issue verification on MX6QTO1.2/MX6DLTO1.1

- for Rigel1.1/Arik1.2, bit 17 of HW_USBPHY_IP will be set, it will fix the
  issue that no wakeup between SUSP/PHCD. And the usb_platform_rh_suspend/
  usb_platform_rh_resume do not need do complex software workaround, only
  need set/clear the workaround bit.
- for Megrez , bit 17 and bit 18 of HW_USBPHY_IP will be set, it will fix the
  issue that no wakeup between SUSP/PHCD and disconnect after resume. No need
  do any software workaround.

Signed-off-by: make shi <b15407@freescale.com>

3 files changed, 60 insertions, 16 deletions

diff --git a/arch/arm/mach-mx6/usb_dr.c b/arch/arm/mach-mx6/usb_dr.c
index dbd1e67b3fc5..1efac33aa7fc 100644
--- a/arch/arm/mach-mx6/usb_dr.c
+++ b/arch/arm/mach-mx6/usb_dr.c
@@ -164,8 +164,9 @@ static int usb_phy_enable(struct fsl_usb2_platform_data *pdata)
 	}
 
 	if (!usb_icbug_swfix_need())
-		__raw_writel(((1 << 17) | (1 << 18)),
-				phy_reg + HW_USBPHY_IP_SET);
+		__raw_writel((1 << 17), phy_reg + HW_USBPHY_IP_SET);
+	if (cpu_is_mx6sl())
+		__raw_writel((1 << 18), phy_reg + HW_USBPHY_IP_SET);
 	return 0;
 }
 /* Notes: configure USB clock*/
@@ -380,7 +381,7 @@ static void usbotg_wakeup_event_clear(void)
 
 #ifdef CONFIG_USB_EHCI_ARC_OTG
 /* Beginning of host related operation for DR port */
-static void _host_platform_rh_suspend(struct fsl_usb2_platform_data *pdata)
+static void _host_platform_rh_suspend_swfix(struct fsl_usb2_platform_data *pdata)
 {
 	void __iomem *phy_reg = MX6_IO_ADDRESS(USB_PHY0_BASE_ADDR);
 	u32 tmp;
@@ -419,7 +420,7 @@ static void _host_platform_rh_suspend(struct fsl_usb2_platform_data *pdata)
 	fsl_platform_otg_set_usb_phy_dis(pdata, 0);
 }
 
-static void _host_platform_rh_resume(struct fsl_usb2_platform_data *pdata)
+static void _host_platform_rh_resume_swfix(struct fsl_usb2_platform_data *pdata)
 {
 	u32 index = 0;
 
@@ -438,6 +439,25 @@ static void _host_platform_rh_resume(struct fsl_usb2_platform_data *pdata)
 	udelay(500);
 	fsl_platform_otg_set_usb_phy_dis(pdata, 1);
 }
+static void _host_platform_rh_suspend(struct fsl_usb2_platform_data *pdata)
+{
+	/*for mx6sl ,we do not need any sw fix*/
+	if (cpu_is_mx6sl())
+		return ;
+	__raw_writel(BM_USBPHY_CTRL_ENHOSTDISCONDETECT,
+		MX6_IO_ADDRESS(pdata->phy_regs)
+		+ HW_USBPHY_CTRL_CLR);
+}
+
+static void _host_platform_rh_resume(struct fsl_usb2_platform_data *pdata)
+{
+	/*for mx6sl ,we do not need any sw fix*/
+	if (cpu_is_mx6sl())
+		return ;
+	__raw_writel(BM_USBPHY_CTRL_ENHOSTDISCONDETECT,
+		MX6_IO_ADDRESS(pdata->phy_regs)
+		+ HW_USBPHY_CTRL_SET);
+}
 
 static void _host_phy_lowpower_suspend(struct fsl_usb2_platform_data *pdata, bool enable)
 {
@@ -579,11 +599,11 @@ void __init mx6_usb_dr_init(void)
 	dr_utmi_config.operating_mode = DR_HOST_MODE;
 	dr_utmi_config.wake_up_enable = _host_wakeup_enable;
 	if (usb_icbug_swfix_need()) {
+		dr_utmi_config.platform_rh_suspend = _host_platform_rh_suspend_swfix;
+		dr_utmi_config.platform_rh_resume  = _host_platform_rh_resume_swfix;
+	} else {
 		dr_utmi_config.platform_rh_suspend = _host_platform_rh_suspend;
 		dr_utmi_config.platform_rh_resume  = _host_platform_rh_resume;
-	} else {
-		dr_utmi_config.platform_rh_suspend = NULL;
-		dr_utmi_config.platform_rh_resume  = NULL;
 	}
 	dr_utmi_config.platform_set_disconnect_det = fsl_platform_otg_set_usb_phy_dis;
 	dr_utmi_config.phy_lowpower_suspend = _host_phy_lowpower_suspend;
diff --git a/arch/arm/mach-mx6/usb_h1.c b/arch/arm/mach-mx6/usb_h1.c
index 01b3ed8b78d6..92ef0ec3c3f5 100644
--- a/arch/arm/mach-mx6/usb_h1.c
+++ b/arch/arm/mach-mx6/usb_h1.c
@@ -125,8 +125,9 @@ static int usb_phy_enable(struct fsl_usb2_platform_data *pdata)
 	__raw_writel(tmp, phy_reg + HW_USBPHY_CTRL);
 
 	if (!usb_icbug_swfix_need())
-		__raw_writel(((1 << 17) | (1 << 18)),
-				phy_reg + HW_USBPHY_IP_SET);
+		__raw_writel((1 << 17), phy_reg + HW_USBPHY_IP_SET);
+	if (cpu_is_mx6sl())
+		__raw_writel((1 << 18), phy_reg + HW_USBPHY_IP_SET);
 	return 0;
 }
 static int fsl_usb_host_init_ext(struct platform_device *pdev)
@@ -193,7 +194,7 @@ static void _wake_up_enable(struct fsl_usb2_platform_data *pdata, bool enable)
 	}
 }
 
-static void usbh1_platform_rh_suspend(struct fsl_usb2_platform_data *pdata)
+static void usbh1_platform_rh_suspend_swfix(struct fsl_usb2_platform_data *pdata)
 {
 	void __iomem *phy_reg = MX6_IO_ADDRESS(USB_PHY1_BASE_ADDR);
 	u32 tmp;
@@ -232,7 +233,7 @@ static void usbh1_platform_rh_suspend(struct fsl_usb2_platform_data *pdata)
 	fsl_platform_h1_set_usb_phy_dis(pdata, 0);
 }
 
-static void usbh1_platform_rh_resume(struct fsl_usb2_platform_data *pdata)
+static void usbh1_platform_rh_resume_swfix(struct fsl_usb2_platform_data *pdata)
 {
 	u32 index = 0;
 
@@ -252,6 +253,26 @@ static void usbh1_platform_rh_resume(struct fsl_usb2_platform_data *pdata)
 	fsl_platform_h1_set_usb_phy_dis(pdata, 1);
 }
 
+static void usbh1_platform_rh_suspend(struct fsl_usb2_platform_data *pdata)
+{
+	/*for mx6sl ,we do not need any sw fix*/
+	if (cpu_is_mx6sl())
+		return ;
+	__raw_writel(BM_USBPHY_CTRL_ENHOSTDISCONDETECT,
+		MX6_IO_ADDRESS(pdata->phy_regs)
+		+ HW_USBPHY_CTRL_CLR);
+}
+
+static void usbh1_platform_rh_resume(struct fsl_usb2_platform_data *pdata)
+{
+	/*for mx6sl ,we do not need any sw fix*/
+	if (cpu_is_mx6sl())
+		return ;
+	__raw_writel(BM_USBPHY_CTRL_ENHOSTDISCONDETECT,
+		MX6_IO_ADDRESS(pdata->phy_regs)
+		+ HW_USBPHY_CTRL_SET);
+}
+
 static void _phy_lowpower_suspend(struct fsl_usb2_platform_data *pdata, bool enable)
 {
 	u32 tmp;
@@ -379,11 +400,11 @@ static int  __init mx6_usb_h1_init(void)
 
 	usbh1_config.wakeup_pdata = &usbh1_wakeup_config;
 	if (usb_icbug_swfix_need()) {
+		usbh1_config.platform_rh_suspend = usbh1_platform_rh_suspend_swfix;
+		usbh1_config.platform_rh_resume  = usbh1_platform_rh_resume_swfix;
+	} else {
 		usbh1_config.platform_rh_suspend = usbh1_platform_rh_suspend;
 		usbh1_config.platform_rh_resume  = usbh1_platform_rh_resume;
-	} else {
-		usbh1_config.platform_rh_suspend = NULL;
-		usbh1_config.platform_rh_resume  = NULL;
 	}
 	if (cpu_is_mx6sl())
 		pdev = imx6sl_add_fsl_ehci_hs(1, &usbh1_config);
diff --git a/arch/arm/plat-mxc/usb_common.c b/arch/arm/plat-mxc/usb_common.c
index 168808e77a18..97d963a54a54 100755
--- a/arch/arm/plat-mxc/usb_common.c
+++ b/arch/arm/plat-mxc/usb_common.c
@@ -63,8 +63,11 @@ bool usb_icbug_swfix_need(void)
 {
 	if (cpu_is_mx6sl())
 		return false;
-	else
-		return true;
+	else if ((mx6q_revision() > IMX_CHIP_REVISION_1_1))
+		return false;
+	else if ((mx6dl_revision() > IMX_CHIP_REVISION_1_0))
+		return false;
+	return true;
 }
 EXPORT_SYMBOL(usb_icbug_swfix_need);