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Add basic infrastructure for SPMI front end driver. Frontend driver
communicates with backend to service SPMI request from clients.
Change-Id: Icff567a2f224fb49f370bf760287d9d3615a3325
Signed-off-by: Yimin Peng <yiminp@codeaurora.org>
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Do not keep the channel reserved for debug port in the
ppid to apid mapping table. This is to avoid accessing
that particular channel during the read/write/irq operations.
Change-Id: I8f49d1d87978a5b68ea711d3e30606d72fd09f73
Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>
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The system crashes due to bad access when reading from an non configured
peripheral and when writing to peripheral which is not owned by current
ee. This patch verifies ownership to avoid crashing on
write.
For reads, since the forward mapping table, data_channel->ppid, is
towards the end of the block, we use the core size to figure the
max number of ppids supported. The table starts at an offset of 0x800
within the block, so size - 0x800 will give us the area used by the
table. Since each table is 4 bytes long (core_size - 0x800) / 4 will
gives us the number of data_channel supported.
This new protection is functional on hw v2.
Change-Id: I74e3452963a7dda9a8c8aaef76de3117cabc454b
Signed-off-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>
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Qualcomm PMIC Arbiter version-2 changes from version-1 are:
- Some different register offsets.
- New channel register space, one per PMIC peripheral (ppid).
All tx traffic uses these channels.
- New observer register space. All rx trafic uses this space.
- Different command format for spmi command registers.
Reviewed-by: Sagar Dharia <sdharia@codeaurora.org>
Signed-off-by: Gilad Avidov <gavidov@codeaurora.org>
Tested-by: Ivan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The generic SPMI example was missing an equal sign in the assignment
of the #size-cells property.
Signed-off-by: Josh Cartwright <joshc@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Signed-off-by: Josh Cartwright <joshc@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Signed-off-by: Josh Cartwright <joshc@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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