From 3cf87e67b2bcb206a964211b08dd4e268d5e9455 Mon Sep 17 00:00:00 2001
From: John Crispin <john@openwrt.org>
Date: Thu, 19 Feb 2015 09:06:56 +0000
Subject: at91: USB gadget subsystem cleanup and driver fix.

Signed-off-by: Owen Kirby <osk@exegin.com>

SVN-Revision: 44491
---
 .../100-ARM-at91-build-dtb-for-LMU5000.patch       |  2 +-
 .../200-ARM-at91-udc-clockfix-backport.patch       | 82 ++++++++++++++++++++++
 2 files changed, 83 insertions(+), 1 deletion(-)
 create mode 100644 target/linux/at91/patches/200-ARM-at91-udc-clockfix-backport.patch

(limited to 'target/linux/at91/patches')

diff --git a/target/linux/at91/patches/100-ARM-at91-build-dtb-for-LMU5000.patch b/target/linux/at91/patches/100-ARM-at91-build-dtb-for-LMU5000.patch
index e8cc68d13d..8852b6a4f0 100644
--- a/target/linux/at91/patches/100-ARM-at91-build-dtb-for-LMU5000.patch
+++ b/target/linux/at91/patches/100-ARM-at91-build-dtb-for-LMU5000.patch
@@ -1,6 +1,6 @@
 --- a/arch/arm/boot/dts/Makefile
 +++ b/arch/arm/boot/dts/Makefile
-@@ -26,6 +26,7 @@ dtb-$(CONFIG_ARCH_AT91) += usb_a9g20.dtb
+@@ -28,6 +28,7 @@ dtb-$(CONFIG_ARCH_AT91) += usb_a9g20.dtb
  dtb-$(CONFIG_ARCH_AT91) += usb_a9g20_lpw.dtb
  # sam9g45
  dtb-$(CONFIG_ARCH_AT91) += at91sam9m10g45ek.dtb
diff --git a/target/linux/at91/patches/200-ARM-at91-udc-clockfix-backport.patch b/target/linux/at91/patches/200-ARM-at91-udc-clockfix-backport.patch
new file mode 100644
index 0000000000..1aec3d00b8
--- /dev/null
+++ b/target/linux/at91/patches/200-ARM-at91-udc-clockfix-backport.patch
@@ -0,0 +1,82 @@
+--- a/drivers/usb/gadget/udc/at91_udc.c
++++ b/drivers/usb/gadget/udc/at91_udc.c
+@@ -870,8 +870,6 @@
+ 		return;
+ 	udc->clocked = 1;
+ 
+-	if (IS_ENABLED(CONFIG_COMMON_CLK))
+-		clk_enable(udc->uclk);
+ 	clk_enable(udc->iclk);
+ 	clk_enable(udc->fclk);
+ }
+@@ -884,8 +882,6 @@
+ 	udc->gadget.speed = USB_SPEED_UNKNOWN;
+ 	clk_disable(udc->fclk);
+ 	clk_disable(udc->iclk);
+-	if (IS_ENABLED(CONFIG_COMMON_CLK))
+-		clk_disable(udc->uclk);
+ }
+ 
+ /*
+@@ -1766,27 +1762,18 @@
+ 	udc_reinit(udc);
+ 
+ 	/* get interface and function clocks */
+-	udc->iclk = clk_get(dev, "udc_clk");
+-	udc->fclk = clk_get(dev, "udpck");
+-	if (IS_ENABLED(CONFIG_COMMON_CLK))
+-		udc->uclk = clk_get(dev, "usb_clk");
+-	if (IS_ERR(udc->iclk) || IS_ERR(udc->fclk) ||
+-	    (IS_ENABLED(CONFIG_COMMON_CLK) && IS_ERR(udc->uclk))) {
++	udc->iclk = clk_get(dev, "pclk");
++	udc->fclk = clk_get(dev, "hclk");
++	if (IS_ERR(udc->iclk) || IS_ERR(udc->fclk)) {
+ 		DBG("clocks missing\n");
+ 		retval = -ENODEV;
+ 		goto fail1;
+ 	}
+ 
+-	/* don't do anything until we have both gadget driver and VBUS */
+-	if (IS_ENABLED(CONFIG_COMMON_CLK)) {
+-		clk_set_rate(udc->uclk, 48000000);
+-		retval = clk_prepare(udc->uclk);
+-		if (retval)
+-			goto fail1;
+-	}
++	clk_set_rate(udc->fclk, 48000000);
+ 	retval = clk_prepare(udc->fclk);
+ 	if (retval)
+-		goto fail1a;
++		goto fail1;
+ 
+ 	retval = clk_prepare_enable(udc->iclk);
+ 	if (retval)
+@@ -1860,12 +1847,7 @@
+ 	clk_unprepare(udc->iclk);
+ fail1b:
+ 	clk_unprepare(udc->fclk);
+-fail1a:
+-	if (IS_ENABLED(CONFIG_COMMON_CLK))
+-		clk_unprepare(udc->uclk);
+ fail1:
+-	if (IS_ENABLED(CONFIG_COMMON_CLK) && !IS_ERR(udc->uclk))
+-		clk_put(udc->uclk);
+ 	if (!IS_ERR(udc->fclk))
+ 		clk_put(udc->fclk);
+ 	if (!IS_ERR(udc->iclk))
+@@ -1911,15 +1893,11 @@
+ 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ 	release_mem_region(res->start, resource_size(res));
+ 
+-	if (IS_ENABLED(CONFIG_COMMON_CLK))
+-		clk_unprepare(udc->uclk);
+ 	clk_unprepare(udc->fclk);
+ 	clk_unprepare(udc->iclk);
+ 
+ 	clk_put(udc->iclk);
+ 	clk_put(udc->fclk);
+-	if (IS_ENABLED(CONFIG_COMMON_CLK))
+-		clk_put(udc->uclk);
+ 
+ 	return 0;
+ }
-- 
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