On Wed, Nov 14, 2012 at 05:51:12PM +0900, Cho KyongHo wrote: > This commit enhances power management of System MMU and its client > devices with the following changes: > - Each System MMU device becomes the parent device of its client > device while probe(). Thus, exynos-iommu driver must be initialized > before client devices. > - System MMU driver does not pm_runtime_get/put() by itself and runtime > power gating is performed by client devices. > - System is safe when suspend/resume without any care by client device > drivers. > > In addition, System MMUs can be seperate into several groups that are > belongs to a single client device like FIMC-IS block. If such blocks are > controlled by a single device descriptor, all System MMUs in the blocks > must be enabled/disabled by a single device descriptor. The problem is > that clock gating and power gating may be not the same among all System > MMUs in the blocks. Thus, System MMUs are grouped by clock gating and > power gating and they are chained by parent-child relationships. > > exynos-iommu driver now also supports debugfs to identify the state of > each System MMU. > > The last big change is to support DT. The desription of the properties > of DT nodes are described in the source file. > > Signed-off-by: KyongHo Cho <pullip.cho@xxxxxxxxxxx> > --- > drivers/iommu/Kconfig | 17 +- > drivers/iommu/exynos-iommu.c | 1420 +++++++++++++++++++++++++++++++----------- > 2 files changed, 1077 insertions(+), 360 deletions(-) This patch does multiple things and is quite large. Please split it down into reasonable chunks and resubmit. Patches 1-3 look good to me and I do not mind taking them for 3.8. Please let me know if you prefer these patches standalone in 3.8 or together with this patch split up. Joerg -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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