diff options
| author | Kalyan Thota <kalyant@codeaurora.org> | 2017-01-14 12:21:29 +0530 |
|---|---|---|
| committer | Kalyan Thota <kalyant@codeaurora.org> | 2017-02-07 10:51:12 +0530 |
| commit | e8b77a585bea4073792b43a349c721c1e8ea77cc (patch) | |
| tree | 063a2e5e8184b290ffdd274d08eb06ac54024248 /include/linux | |
| parent | 741fc8ee90d3c1da6fd8b92c5d3e8857d145b4a2 (diff) | |
msm: mdss: share MDP smmu device mappings with other mdss clients
Rotator and MDP share same stream ID on sdm600 target,
hence share the smmu device with rotator device to map/unmap
its buffers.
The change will also handle different secure usecase concurrencies
like, mdp running in secure and rotator in non-secure and vice versa.
Change-Id: I3ff118baed3984d63e9a9fe94289d99523c7b3e9
Signed-off-by: Kalyan Thota <kalyant@codeaurora.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/mdss_smmu_ext.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/include/linux/mdss_smmu_ext.h b/include/linux/mdss_smmu_ext.h new file mode 100644 index 000000000000..414ab055595a --- /dev/null +++ b/include/linux/mdss_smmu_ext.h @@ -0,0 +1,49 @@ +/* Copyright (c) 2017, The Linux Foundation. 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 + * only version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef MDSS_SMMU_EXT_H +#define MDSS_SMMU_EXT_H + +/** + * struct msm_smmu:interface exposed to the clients which use smmu driver. + * @dev: smmu device for attach/dettach + * @domain: domain for the context bank. + * @is_secure: bool variable to check for secure domain. + * @iommu_ctrl: iommu ctrl function for enable/disable attach. + * @secure_session_ctrl: ctrl function for enable/disable session. + * @wait_for_transition:function to wait till secure transtion is complete. + */ +struct mdss_smmu_intf { + struct device *dev; + int domain; + bool is_secure; + int (*iommu_ctrl)(int); + int (*secure_session_ctrl)(int); + int (*wait_for_transition)(int state, int request); +}; + +typedef void (*msm_smmu_handler_t) (struct mdss_smmu_intf *smmu); + +/** + * mdss_smmu_request_mappings: function to request smmu mappings. + * Client driver can request smmu dev via this API. + * dev will be returned in the same call context + * if probe is not finished then dev will be + * returned once it is completed. + * @callback: callback function that is called to return smmu + * dev + */ + +int mdss_smmu_request_mappings(msm_smmu_handler_t callback); + +#endif /* MDSS_SMMU_EXT_H */ |