From 5c28fa75cd788ef8d6cf60da12ebce5c42f37cbc Mon Sep 17 00:00:00 2001
From: mb <mb@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Wed, 9 Mar 2011 18:26:03 +0000
Subject: omap24xx: Split up tahvo usb fixes

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@25979 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
 .../patches-2.6.38/596-cbus-tahvo-usb-clk.patch    | 78 ++++++++++++++++++++++
 1 file changed, 78 insertions(+)
 create mode 100644 target/linux/omap24xx/patches-2.6.38/596-cbus-tahvo-usb-clk.patch

(limited to 'target/linux/omap24xx/patches-2.6.38/596-cbus-tahvo-usb-clk.patch')

diff --git a/target/linux/omap24xx/patches-2.6.38/596-cbus-tahvo-usb-clk.patch b/target/linux/omap24xx/patches-2.6.38/596-cbus-tahvo-usb-clk.patch
new file mode 100644
index 000000000..34279b428
--- /dev/null
+++ b/target/linux/omap24xx/patches-2.6.38/596-cbus-tahvo-usb-clk.patch
@@ -0,0 +1,78 @@
+Index: linux-2.6.38-rc7/drivers/cbus/tahvo-usb.c
+===================================================================
+--- linux-2.6.38-rc7.orig/drivers/cbus/tahvo-usb.c	2011-03-09 18:55:47.177917578 +0100
++++ linux-2.6.38-rc7/drivers/cbus/tahvo-usb.c	2011-03-09 18:58:35.869996276 +0100
+@@ -98,6 +98,7 @@ struct tahvo_usb {
+ #ifdef CONFIG_USB_OTG
+ 	int tahvo_mode;
+ #endif
++	struct clk *ick;
+ };
+ static struct tahvo_usb *tahvo_usb_device;
+ 
+@@ -673,6 +674,14 @@ static int __init tahvo_usb_probe(struct
+ 	INIT_WORK(&tu->irq_work, tahvo_usb_irq_work);
+ 	mutex_init(&tu->serialize);
+ 
++	tu->ick = clk_get(NULL, "usb_l4_ick");
++	if (IS_ERR(tu->ick)) {
++		dev_err(dev, "Failed to get usb_l4_ick\n");
++		ret = PTR_ERR(tu->ick);
++		goto err_free_tu;
++	}
++	clk_enable(tu->ick);
++
+ 	/* Set initial state, so that we generate kevents only on
+ 	 * state changes */
+ 	tu->vbus_state = tahvo_read_reg(TAHVO_REG_IDSR) & 0x01;
+@@ -681,10 +690,8 @@ static int __init tahvo_usb_probe(struct
+ 	ret = tahvo_request_irq(TAHVO_INT_VBUSON, tahvo_usb_vbus_interrupt,
+ 				(unsigned long) tu, "vbus_interrupt");
+ 	if (ret != 0) {
+-		kfree(tu);
+-		tahvo_usb_device = NULL;
+ 		printk(KERN_ERR "Could not register Tahvo interrupt for VBUS\n");
+-		return ret;
++		goto err_release_clk;
+ 	}
+ 
+ 	/* Attributes */
+@@ -709,10 +716,7 @@ static int __init tahvo_usb_probe(struct
+ 	ret = otg_set_transceiver(&tu->otg);
+ 	if (ret < 0) {
+ 		printk(KERN_ERR "Cannot register USB transceiver\n");
+-		tahvo_usb_device = NULL;
+-		kfree(tu);
+-		tahvo_free_irq(TAHVO_INT_VBUSON);
+-		return ret;
++		goto err_free_irq;
+ 	}
+ 
+ 	dev_set_drvdata(dev, tu);
+@@ -721,6 +725,17 @@ static int __init tahvo_usb_probe(struct
+ 	 * may not be generated in addition to this. */
+ 	schedule_work(&tu->irq_work);
+ 	return 0;
++
++err_free_irq:
++	tahvo_free_irq(TAHVO_INT_VBUSON);
++err_release_clk:
++	clk_disable(tu->ick);
++	clk_put(tu->ick);
++err_free_tu:
++	kfree(tu);
++	tahvo_usb_device = NULL;
++
++	return ret;
+ }
+ 
+ static int __exit tahvo_usb_remove(struct platform_device *pdev)
+@@ -736,6 +751,8 @@ static int __exit tahvo_usb_remove(struc
+ #ifdef CONFIG_USB_OTG
+ 	device_remove_file(&pdev->dev, &dev_attr_otg_mode);
+ #endif
++	clk_disable(tu->ick);
++	clk_put(tu->ick);
+ 
+ 	kfree(tu);
+ 	tahvo_usb_device = NULL;
-- 
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