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usb: ehci-omap: add support for TLL mode on OMAP4

Message ID 1297851194-26264-1-git-send-email-gadiyar@ti.com (mailing list archive)
State New, archived
Delegated to: Felipe Balbi
Headers show

Commit Message

Anand Gadiyar Feb. 16, 2011, 10:13 a.m. UTC
None
diff mbox

Patch

Index: linux-omap-usb/drivers/usb/host/ehci-omap.c
===================================================================
--- linux-omap-usb.orig/drivers/usb/host/ehci-omap.c
+++ linux-omap-usb/drivers/usb/host/ehci-omap.c
@@ -195,7 +195,11 @@  struct ehci_hcd_omap {
 	struct clk		*xclk60mhsp1_ck;
 	struct clk		*xclk60mhsp2_ck;
 	struct clk		*utmi_p1_fck;
+	struct clk		*usbhost_p1_fck;
+	struct clk		*usbtll_p1_fck;
 	struct clk		*utmi_p2_fck;
+	struct clk		*usbhost_p2_fck;
+	struct clk		*usbtll_p2_fck;
 
 	/* FIXME the following two workarounds are
 	 * board specific not silicon-specific so these
@@ -410,6 +414,50 @@  static int omap_start_ehc(struct ehci_hc
 			}
 			break;
 		case EHCI_HCD_OMAP_MODE_TLL:
+			omap->xclk60mhsp1_ck = clk_get(omap->dev,
+							"init_60m_fclk");
+			if (IS_ERR(omap->xclk60mhsp1_ck)) {
+				ret = PTR_ERR(omap->xclk60mhsp1_ck);
+				dev_err(omap->dev,
+					"Unable to get Port1 ULPI clock\n");
+			}
+
+			omap->utmi_p1_fck = clk_get(omap->dev,
+							"utmi_p1_gfclk");
+			if (IS_ERR(omap->utmi_p1_fck)) {
+				ret = PTR_ERR(omap->utmi_p1_fck);
+				dev_err(omap->dev,
+					"Unable to get utmi_p1_fck\n");
+			}
+
+			ret = clk_set_parent(omap->utmi_p1_fck,
+						omap->xclk60mhsp1_ck);
+			if (ret != 0) {
+				dev_err(omap->dev,
+					"Unable to set P1 f-clock\n");
+			}
+
+			omap->usbhost_p1_fck = clk_get(omap->dev,
+						"usb_host_hs_utmi_p1_clk");
+			if (IS_ERR(omap->usbhost_p1_fck)) {
+				ret = PTR_ERR(omap->usbhost_p1_fck);
+				dev_err(omap->dev,
+					"Unable to get HOST PORT 1 clk\n");
+			} else {
+				clk_enable(omap->usbhost_p1_fck);
+			}
+
+			omap->usbtll_p1_fck = clk_get(omap->dev,
+						"usb_tll_hs_usb_ch0_clk");
+
+			if (IS_ERR(omap->usbtll_p1_fck)) {
+				ret = PTR_ERR(omap->usbtll_p1_fck);
+				dev_err(omap->dev,
+					"Unable to get TLL CH0 clk\n");
+			} else {
+				clk_enable(omap->usbtll_p1_fck);
+			}
+			break;
 			/* TODO */
 		default:
 			break;
@@ -440,6 +488,50 @@  static int omap_start_ehc(struct ehci_hc
 			}
 			break;
 		case EHCI_HCD_OMAP_MODE_TLL:
+			omap->xclk60mhsp2_ck = clk_get(omap->dev,
+							"init_60m_fclk");
+			if (IS_ERR(omap->xclk60mhsp2_ck)) {
+				ret = PTR_ERR(omap->xclk60mhsp2_ck);
+				dev_err(omap->dev,
+					"Unable to get Port2 ULPI clock\n");
+			}
+
+			omap->utmi_p2_fck = clk_get(omap->dev,
+							"utmi_p2_gfclk");
+			if (IS_ERR(omap->utmi_p2_fck)) {
+				ret = PTR_ERR(omap->utmi_p2_fck);
+				dev_err(omap->dev,
+					"Unable to get utmi_p2_fck\n");
+			}
+
+			ret = clk_set_parent(omap->utmi_p2_fck,
+						omap->xclk60mhsp2_ck);
+			if (ret != 0) {
+				dev_err(omap->dev,
+					"Unable to set P2 f-clock\n");
+			}
+
+			omap->usbhost_p2_fck = clk_get(omap->dev,
+						"usb_host_hs_utmi_p2_clk");
+			if (IS_ERR(omap->usbhost_p2_fck)) {
+				ret = PTR_ERR(omap->usbhost_p2_fck);
+				dev_err(omap->dev,
+					"Unable to get HOST PORT 2 clk\n");
+			} else {
+				clk_enable(omap->usbhost_p2_fck);
+			}
+
+			omap->usbtll_p2_fck = clk_get(omap->dev,
+						"usb_tll_hs_usb_ch1_clk");
+
+			if (IS_ERR(omap->usbtll_p2_fck)) {
+				ret = PTR_ERR(omap->usbtll_p2_fck);
+				dev_err(omap->dev,
+					"Unable to get TLL CH1 clk\n");
+			} else {
+				clk_enable(omap->usbtll_p2_fck);
+			}
+			break;
 			/* TODO */
 		default:
 			break;
@@ -602,6 +694,24 @@  static int omap_start_ehc(struct ehci_hc
 	return 0;
 
 err_sys_status:
+
+	if (omap->usbtll_p2_fck != NULL) {
+		clk_disable(omap->usbtll_p2_fck);
+		clk_put(omap->usbtll_p2_fck);
+	}
+	if (omap->usbhost_p2_fck != NULL) {
+		clk_disable(omap->usbhost_p2_fck);
+		clk_put(omap->usbhost_p2_fck);
+	}
+	if (omap->usbtll_p1_fck != NULL) {
+		clk_disable(omap->usbtll_p1_fck);
+		clk_put(omap->usbtll_p1_fck);
+	}
+	if (omap->usbhost_p1_fck != NULL) {
+		clk_disable(omap->usbhost_p1_fck);
+		clk_put(omap->usbhost_p1_fck);
+	}
+
 	clk_disable(omap->utmi_p2_fck);
 	clk_put(omap->utmi_p2_fck);
 	clk_disable(omap->xclk60mhsp2_ck);
@@ -740,6 +850,30 @@  static void omap_stop_ehc(struct ehci_hc
 			clk_put(omap->utmi_p2_fck);
 			omap->utmi_p2_fck = NULL;
 		}
+
+		if (omap->usbtll_p2_fck != NULL) {
+			clk_disable(omap->usbtll_p2_fck);
+			clk_put(omap->usbtll_p2_fck);
+			omap->usbtll_p2_fck = NULL;
+		}
+
+		if (omap->usbhost_p2_fck != NULL) {
+			clk_disable(omap->usbhost_p2_fck);
+			clk_put(omap->usbhost_p2_fck);
+			omap->usbhost_p2_fck = NULL;
+		}
+
+		if (omap->usbtll_p1_fck != NULL) {
+			clk_disable(omap->usbtll_p1_fck);
+			clk_put(omap->usbtll_p1_fck);
+			omap->usbtll_p1_fck = NULL;
+		}
+
+		if (omap->usbhost_p1_fck != NULL) {
+			clk_disable(omap->usbhost_p1_fck);
+			clk_put(omap->usbhost_p1_fck);
+			omap->usbhost_p1_fck = NULL;
+		}
 	}
 
 	if (omap->phy_reset) {