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msm: vidc: Handoff regulators after firmware loading is complete

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Regulator handoff causes the GDSC to turn off momentarily and resets
internal registers. As a result, TZ is unable to program secure
registers during Secure PIL load fails. Moving the handoff after
PIL load allows proper secure register programming and enables
secure sessions.

CRs-Fixed: 2450296
Change-Id: I32c7bf8726b51fdfa73b40819e8fdccdbbc0abe3
Signed-off-by: Chinmay Sawarkar <chinmays@codeaurora.org>
This commit is contained in:
Chinmay Sawarkar 2019-05-10 12:27:11 -07:00
commit 1277141e60
1 changed files with 18 additions and 9 deletions
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27
msm/vidc/hfi_common.c
View file

@ -4431,15 +4431,6 @@ static int __venus_power_on(struct venus_hfi_device *device)
device->intr_status = 0;
enable_irq(device->hal_data->irq);
/*
* Hand off control of regulators to h/w _after_ enabling clocks.
* Note that the GDSC will turn off when switching from normal
* (s/w triggered) to fast (HW triggered) unless the h/w vote is
* present. Since Venus isn't up yet, the GDSC will be off briefly.
*/
if (__enable_hw_power_collapse(device))
dprintk(VIDC_ERR, "Failed to enabled inter-frame PC\n");
return rc;
fail_enable_clks:
@ -4535,6 +4526,15 @@ static inline int __resume(struct venus_hfi_device *device)
goto err_set_video_state;
}
/*
* Hand off control of regulators to h/w _after_ loading fw.
* Note that the GDSC will turn off when switching from normal
* (s/w triggered) to fast (HW triggered) unless the h/w vote is
* present.
*/
if (__enable_hw_power_collapse(device))
dprintk(VIDC_ERR, "Failed to enabled inter-frame PC\n");
call_venus_op(device, setup_ucregion_memmap, device);
/* Wait for boot completion */
@ -4621,6 +4621,15 @@ static int __load_fw(struct venus_hfi_device *device)
goto fail_protect_mem;
}
}
/*
* Hand off control of regulators to h/w _after_ loading fw.
* Note that the GDSC will turn off when switching from normal
* (s/w triggered) to fast (HW triggered) unless the h/w vote is
* present.
*/
if (__enable_hw_power_collapse(device))
dprintk(VIDC_ERR, "Failed to enabled inter-frame PC\n");
trace_msm_v4l2_vidc_fw_load_end("msm_v4l2_vidc venus_fw load end");
return rc;
fail_protect_mem: