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path: root/drivers/firmware/qcom_scm.c
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2015-05-28firmware: qcom: scm: Add HDCP Supportjilai wang
HDCP driver needs to check if secure environment supports HDCP. If it's supported, then it requires to program some registers through SCM. Add qcom_scm_hdcp_available and qcom_scm_hdcp_req to support these requirements. Signed-off-by: Jilai Wang <jilaiw@codeaurora.org> Signed-off-by: Kumar Gala <galak@codeaurora.org>
2015-04-28firmware: qcom: scm: Split out 32-bit specific SCM codeKumar Gala
Split out the 32-bit SCM implementation into its own file to prep for supporting a 64-bit/ARM64 implementation as well. We create a simple shim to ensure both versions conform to the same interface. Signed-off-by: Kumar Gala <galak@codeaurora.org>
2015-03-11firmware: qcom: scm: Support cpu power down through SCMLina Iyer
Support powering down the calling cpu, by trapping into SCM. This termination function triggers the ARM cpu to execute WFI instruction, causing the power controller to safely power the cpu down. Caches may be flushed before powering down the cpu. If cache controller is set to turn off when the cpu is powered down, then the flags argument indicates to the secure mode to flush its cache lines before executing WFI.The warm boot reset address for the cpu should be set before the calling into this function for the cpu to resume. The original code for the qcom_scm_call_atomic1() comes from a patch by Stephen Boyd [1]. The function scm_call_atomic1() has been cherry picked and renamed to match the convention used in this file. Since there are no users of scm_call_atomic2(), the function is not included. [1]. https://lkml.org/lkml/2014/8/4/765 Signed-off-by: Stephen Boyd <sboyd@codeauraro.org> Signed-off-by: Lina Iyer <lina.iyer@linaro.org> Signed-off-by: Kumar Gala <galak@codeaurora.org>
2015-03-11firmware: qcom: scm: Add qcom_scm_set_warm_boot_addr functionLina Iyer
A core can be powered down for cpuidle or when it is hotplugged off. In either case, the warmboot return address would be different. Allow setting the warmboot address for a specific cpu, optimize and write to the firmware, if the address is different than the previously set address. Export qcom_scm_set_warm_boot_addr function move the warm boot flags to implementation. Signed-off-by: Lina Iyer <lina.iyer@linaro.org> Signed-off-by: Kumar Gala <galak@codeaurora.org>
2015-03-11firmware: qcom: scm: Clean cold boot entry to export only the APILina Iyer
We dont need to export the SCM specific cold boot flags to the platform code. Export only a function to set the cold boot address. Signed-off-by: Lina Iyer <lina.iyer@linaro.org> Signed-off-by: Kumar Gala <galak@codeaurora.org>
2015-03-11firmware: qcom: scm: Move the scm driver to drivers/firmwareKumar Gala
Architectural changes in the ARM Linux kernel tree mandate the eventual removal of the mach-* directories. Move the scm driver to drivers/firmware and the scm header to include/linux to support that removal. Signed-off-by: Kumar Gala <galak@codeaurora.org>