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path: root/drivers/usb/dwc3/dwc3-omap.c
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Diffstat (limited to 'drivers/usb/dwc3/dwc3-omap.c')
-rw-r--r--drivers/usb/dwc3/dwc3-omap.c172
1 files changed, 86 insertions, 86 deletions
diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c
index 07a736acd0f2..ef4936ff626c 100644
--- a/drivers/usb/dwc3/dwc3-omap.c
+++ b/drivers/usb/dwc3/dwc3-omap.c
@@ -77,10 +77,6 @@
#define USBOTGSS_DEV_EBC_EN 0x0110
#define USBOTGSS_DEBUG_OFFSET 0x0600
-/* REVISION REGISTER */
-#define USBOTGSS_REVISION_XMAJOR(reg) ((reg >> 8) & 0x7)
-#define USBOTGSS_REVISION_XMAJOR1 1
-#define USBOTGSS_REVISION_XMAJOR2 2
/* SYSCONFIG REGISTER */
#define USBOTGSS_SYSCONFIG_DMADISABLE (1 << 16)
@@ -129,7 +125,6 @@ struct dwc3_omap {
u32 irq_eoi_offset;
u32 debug_offset;
u32 irq0_offset;
- u32 revision;
u32 dma_status:1;
@@ -383,6 +378,87 @@ static int dwc3_omap_vbus_notifier(struct notifier_block *nb,
return NOTIFY_DONE;
}
+static void dwc3_omap_map_offset(struct dwc3_omap *omap)
+{
+ struct device_node *node = omap->dev->of_node;
+
+ /*
+ * Differentiate between OMAP5 and AM437x.
+ *
+ * For OMAP5(ES2.0) and AM437x wrapper revision is same, even
+ * though there are changes in wrapper register offsets.
+ *
+ * Using dt compatible to differentiate AM437x.
+ */
+ if (of_device_is_compatible(node, "ti,am437x-dwc3")) {
+ omap->irq_eoi_offset = USBOTGSS_EOI_OFFSET;
+ omap->irq0_offset = USBOTGSS_IRQ0_OFFSET;
+ omap->irqmisc_offset = USBOTGSS_IRQMISC_OFFSET;
+ omap->utmi_otg_offset = USBOTGSS_UTMI_OTG_OFFSET;
+ omap->debug_offset = USBOTGSS_DEBUG_OFFSET;
+ }
+}
+
+static void dwc3_omap_set_utmi_mode(struct dwc3_omap *omap)
+{
+ u32 reg;
+ struct device_node *node = omap->dev->of_node;
+ int utmi_mode = 0;
+
+ reg = dwc3_omap_read_utmi_status(omap);
+
+ of_property_read_u32(node, "utmi-mode", &utmi_mode);
+
+ switch (utmi_mode) {
+ case DWC3_OMAP_UTMI_MODE_SW:
+ reg |= USBOTGSS_UTMI_OTG_STATUS_SW_MODE;
+ break;
+ case DWC3_OMAP_UTMI_MODE_HW:
+ reg &= ~USBOTGSS_UTMI_OTG_STATUS_SW_MODE;
+ break;
+ default:
+ dev_dbg(omap->dev, "UNKNOWN utmi mode %d\n", utmi_mode);
+ }
+
+ dwc3_omap_write_utmi_status(omap, reg);
+}
+
+static int dwc3_omap_extcon_register(struct dwc3_omap *omap)
+{
+ u32 ret;
+ struct device_node *node = omap->dev->of_node;
+ struct extcon_dev *edev;
+
+ if (of_property_read_bool(node, "extcon")) {
+ edev = extcon_get_edev_by_phandle(omap->dev, 0);
+ if (IS_ERR(edev)) {
+ dev_vdbg(omap->dev, "couldn't get extcon device\n");
+ return -EPROBE_DEFER;
+ }
+
+ omap->vbus_nb.notifier_call = dwc3_omap_vbus_notifier;
+ ret = extcon_register_interest(&omap->extcon_vbus_dev,
+ edev->name, "USB",
+ &omap->vbus_nb);
+ if (ret < 0)
+ dev_vdbg(omap->dev, "failed to register notifier for USB\n");
+
+ omap->id_nb.notifier_call = dwc3_omap_id_notifier;
+ ret = extcon_register_interest(&omap->extcon_id_dev,
+ edev->name, "USB-HOST",
+ &omap->id_nb);
+ if (ret < 0)
+ dev_vdbg(omap->dev, "failed to register notifier for USB-HOST\n");
+
+ if (extcon_get_cable_state(edev, "USB") == true)
+ dwc3_omap_set_mailbox(omap, OMAP_DWC3_VBUS_VALID);
+ if (extcon_get_cable_state(edev, "USB-HOST") == true)
+ dwc3_omap_set_mailbox(omap, OMAP_DWC3_ID_GROUND);
+ }
+
+ return 0;
+}
+
static int dwc3_omap_probe(struct platform_device *pdev)
{
struct device_node *node = pdev->dev.of_node;
@@ -390,15 +466,11 @@ static int dwc3_omap_probe(struct platform_device *pdev)
struct dwc3_omap *omap;
struct resource *res;
struct device *dev = &pdev->dev;
- struct extcon_dev *edev;
struct regulator *vbus_reg = NULL;
int ret;
int irq;
- int utmi_mode = 0;
- int x_major;
-
u32 reg;
void __iomem *base;
@@ -448,58 +520,8 @@ static int dwc3_omap_probe(struct platform_device *pdev)
goto err0;
}
- reg = dwc3_omap_readl(omap->base, USBOTGSS_REVISION);
- omap->revision = reg;
- x_major = USBOTGSS_REVISION_XMAJOR(reg);
-
- /* Differentiate between OMAP5 and AM437x */
- switch (x_major) {
- case USBOTGSS_REVISION_XMAJOR1:
- case USBOTGSS_REVISION_XMAJOR2:
- omap->irq_eoi_offset = 0;
- omap->irq0_offset = 0;
- omap->irqmisc_offset = 0;
- omap->utmi_otg_offset = 0;
- omap->debug_offset = 0;
- break;
- default:
- /* Default to the latest revision */
- omap->irq_eoi_offset = USBOTGSS_EOI_OFFSET;
- omap->irq0_offset = USBOTGSS_IRQ0_OFFSET;
- omap->irqmisc_offset = USBOTGSS_IRQMISC_OFFSET;
- omap->utmi_otg_offset = USBOTGSS_UTMI_OTG_OFFSET;
- omap->debug_offset = USBOTGSS_DEBUG_OFFSET;
- break;
- }
-
- /* For OMAP5(ES2.0) and AM437x x_major is 2 even though there are
- * changes in wrapper registers, Using dt compatible for aegis
- */
-
- if (of_device_is_compatible(node, "ti,am437x-dwc3")) {
- omap->irq_eoi_offset = USBOTGSS_EOI_OFFSET;
- omap->irq0_offset = USBOTGSS_IRQ0_OFFSET;
- omap->irqmisc_offset = USBOTGSS_IRQMISC_OFFSET;
- omap->utmi_otg_offset = USBOTGSS_UTMI_OTG_OFFSET;
- omap->debug_offset = USBOTGSS_DEBUG_OFFSET;
- }
-
- reg = dwc3_omap_read_utmi_status(omap);
-
- of_property_read_u32(node, "utmi-mode", &utmi_mode);
-
- switch (utmi_mode) {
- case DWC3_OMAP_UTMI_MODE_SW:
- reg |= USBOTGSS_UTMI_OTG_STATUS_SW_MODE;
- break;
- case DWC3_OMAP_UTMI_MODE_HW:
- reg &= ~USBOTGSS_UTMI_OTG_STATUS_SW_MODE;
- break;
- default:
- dev_dbg(dev, "UNKNOWN utmi mode %d\n", utmi_mode);
- }
-
- dwc3_omap_write_utmi_status(omap, reg);
+ dwc3_omap_map_offset(omap);
+ dwc3_omap_set_utmi_mode(omap);
/* check the DMA Status */
reg = dwc3_omap_readl(omap->base, USBOTGSS_SYSCONFIG);
@@ -515,31 +537,9 @@ static int dwc3_omap_probe(struct platform_device *pdev)
dwc3_omap_enable_irqs(omap);
- if (of_property_read_bool(node, "extcon")) {
- edev = extcon_get_edev_by_phandle(dev, 0);
- if (IS_ERR(edev)) {
- dev_vdbg(dev, "couldn't get extcon device\n");
- ret = -EPROBE_DEFER;
- goto err2;
- }
-
- omap->vbus_nb.notifier_call = dwc3_omap_vbus_notifier;
- ret = extcon_register_interest(&omap->extcon_vbus_dev,
- edev->name, "USB", &omap->vbus_nb);
- if (ret < 0)
- dev_vdbg(dev, "failed to register notifier for USB\n");
- omap->id_nb.notifier_call = dwc3_omap_id_notifier;
- ret = extcon_register_interest(&omap->extcon_id_dev, edev->name,
- "USB-HOST", &omap->id_nb);
- if (ret < 0)
- dev_vdbg(dev,
- "failed to register notifier for USB-HOST\n");
-
- if (extcon_get_cable_state(edev, "USB") == true)
- dwc3_omap_set_mailbox(omap, OMAP_DWC3_VBUS_VALID);
- if (extcon_get_cable_state(edev, "USB-HOST") == true)
- dwc3_omap_set_mailbox(omap, OMAP_DWC3_ID_GROUND);
- }
+ ret = dwc3_omap_extcon_register(omap);
+ if (ret < 0)
+ goto err2;
ret = of_platform_populate(node, NULL, NULL, dev);
if (ret) {
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-02 04:18:00 +0300