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authorStepan Moskovchenko <stepanm@codeaurora.org>2011-02-24 18:00:39 -0800
committerDavid Brown <davidb@codeaurora.org>2011-03-08 14:40:58 -0800
commit41f3f5138a5ea71ee603f3d556953fce9aba3074 (patch)
tree7fe712ddf9b29098b527dbdf9766d4d155dc00d8 /arch/arm/mach-msm/include/mach
parent8bec99b586e2aa285076c2057e72b70ab5c43175 (diff)
msm: iommu: Clock control for the IOMMU driver
Add clock control to the IOMMU driver. The IOMMU bus clock (and potentially an AXI clock) need to be on to gain access to IOMMU registers. Actively control these clocks when needed instead of leaving them on. Signed-off-by: Stepan Moskovchenko <stepanm@codeaurora.org> Signed-off-by: David Brown <davidb@codeaurora.org>
Diffstat (limited to 'arch/arm/mach-msm/include/mach')
-rw-r--r--arch/arm/mach-msm/include/mach/iommu.h9
1 files changed, 7 insertions, 2 deletions
diff --git a/arch/arm/mach-msm/include/mach/iommu.h b/arch/arm/mach-msm/include/mach/iommu.h
index 296c0f10f23..8738a445558 100644
--- a/arch/arm/mach-msm/include/mach/iommu.h
+++ b/arch/arm/mach-msm/include/mach/iommu.h
@@ -1,4 +1,4 @@
-/* Copyright (c) 2010, Code Aurora Forum. All rights reserved.
+/* Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
@@ -19,6 +19,7 @@
#define MSM_IOMMU_H
#include <linux/interrupt.h>
+#include <linux/clk.h>
/* Sharability attributes of MSM IOMMU mappings */
#define MSM_IOMMU_ATTR_NON_SH 0x0
@@ -74,13 +75,17 @@ struct msm_iommu_ctx_dev {
* struct msm_iommu_drvdata - A single IOMMU hardware instance
* @base: IOMMU config port base address (VA)
* @irq: Interrupt number
- *
+ * @clk: The bus clock for this IOMMU hardware instance
+ * @pclk: The clock for the IOMMU bus interconnect
+ *
* A msm_iommu_drvdata holds the global driver data about a single piece
* of an IOMMU hardware instance.
*/
struct msm_iommu_drvdata {
void __iomem *base;
int irq;
+ struct clk *clk;
+ struct clk *pclk;
};
/**