On Saturday, November 17, 2012, Joerg Roedel <[email protected]> wrote: > 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 <[email protected]> >> --- >> 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. >
Thank you for review. I am splitting the fourth patch and will post it by tomorrow. The current driver does not be probed with the first 3 patches. I want them to be in 3,8 together. Cho KyongHo
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