openwrtv4/target/linux/mvebu/patches-3.10/0038-bus-mvebu-mbus-Add-new-API-for-window-creation.patch

From 93b6bd1bf81cffd3e5739478c4434bf25458ec7d Mon Sep 17 00:00:00 2001
From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Date: Fri, 5 Jul 2013 14:54:16 +0200
Subject: [PATCH 038/203] bus: mvebu-mbus: Add new API for window creation

We add an API to create MBus address decoding windows from the target
ID and attribute. This function will be used later and deprecate the
current name based scheme.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Tested-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
---
 drivers/bus/mvebu-mbus.c | 33 +++++++++++++++++++++++++--------
 include/linux/mbus.h     |  6 ++++++
 2 files changed, 31 insertions(+), 8 deletions(-)

--- a/drivers/bus/mvebu-mbus.c
+++ b/drivers/bus/mvebu-mbus.c
@@ -748,6 +748,22 @@ static const struct of_device_id of_mveb
 /*
  * Public API of the driver
  */
+int mvebu_mbus_add_window_remap_by_id(unsigned int target,
+				      unsigned int attribute,
+				      phys_addr_t base, size_t size,
+				      phys_addr_t remap)
+{
+	struct mvebu_mbus_state *s = &mbus_state;
+
+	if (!mvebu_mbus_window_conflicts(s, base, size, target, attribute)) {
+		pr_err("cannot add window '%x:%x', conflicts with another window\n",
+		       target, attribute);
+		return -EINVAL;
+	}
+
+	return mvebu_mbus_alloc_window(s, base, size, remap, target, attribute);
+}
+
 int mvebu_mbus_add_window_remap_flags(const char *devname, phys_addr_t base,
 				      size_t size, phys_addr_t remap,
 				      unsigned int flags)
@@ -776,14 +792,8 @@ int mvebu_mbus_add_window_remap_flags(co
 	else if (flags == MVEBU_MBUS_PCI_WA)
 		attr |= 0x28;
 
-	if (!mvebu_mbus_window_conflicts(s, base, size, target, attr)) {
-		pr_err("cannot add window '%s', conflicts with another window\n",
-		       devname);
-		return -EINVAL;
-	}
-
-	return mvebu_mbus_alloc_window(s, base, size, remap, target, attr);
-
+	return mvebu_mbus_add_window_remap_by_id(target, attr, base,
+						 size, remap);
 }
 
 int mvebu_mbus_add_window(const char *devname, phys_addr_t base, size_t size)
@@ -792,6 +802,13 @@ int mvebu_mbus_add_window(const char *de
 						 MVEBU_MBUS_NO_REMAP, 0);
 }
 
+int mvebu_mbus_add_window_by_id(unsigned int target, unsigned int attribute,
+				phys_addr_t base, size_t size)
+{
+	return mvebu_mbus_add_window_remap_by_id(target, attribute, base,
+						 size, MVEBU_MBUS_NO_REMAP);
+}
+
 int mvebu_mbus_del_window(phys_addr_t base, size_t size)
 {
 	int win;
--- a/include/linux/mbus.h
+++ b/include/linux/mbus.h
@@ -62,8 +62,14 @@ static inline const struct mbus_dram_tar
 int mvebu_mbus_add_window_remap_flags(const char *devname, phys_addr_t base,
 				      size_t size, phys_addr_t remap,
 				      unsigned int flags);
+int mvebu_mbus_add_window_remap_by_id(unsigned int target,
+				      unsigned int attribute,
+				      phys_addr_t base, size_t size,
+				      phys_addr_t remap);
 int mvebu_mbus_add_window(const char *devname, phys_addr_t base,
 			  size_t size);
+int mvebu_mbus_add_window_by_id(unsigned int target, unsigned int attribute,
+				phys_addr_t base, size_t size);
 int mvebu_mbus_del_window(phys_addr_t base, size_t size);
 int mvebu_mbus_init(const char *soc, phys_addr_t mbus_phys_base,
 		    size_t mbus_size, phys_addr_t sdram_phys_base,