evie/android_kernel_oneplus_msm8998
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Merge "msm: vidc: retain clock rate across power suspend/resume"

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Linux Build Service Account 2017-07-25 15:29:49 -07:00 • committed by Gerrit - the friendly Code Review server
commit 16708b0614
2 changed files with 42 additions and 0 deletions
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1
drivers/media/platform/msm/vidc/msm_vidc_resources.h
View file

@ -106,6 +106,7 @@ struct clock_info {
u32 count;
bool has_scaling;
bool has_mem_retention;
unsigned long rate_on_enable;
};
struct clock_set {

41
drivers/media/platform/msm/vidc/venus_hfi.c
View file

@ -1574,6 +1574,7 @@ static int __scale_clocks(struct venus_hfi_device *device,
return rc;
}
static int venus_hfi_scale_clocks(void *dev, int load,
struct vidc_clk_scale_data *data,
unsigned long instant_bitrate)
@ -1600,6 +1601,41 @@ exit:
return rc;
}
static void __save_clock_rate(struct venus_hfi_device *device, bool reset)
{
struct clock_info *cl;
venus_hfi_for_each_clock(device, cl) {
if (cl->has_scaling) {
cl->rate_on_enable =
reset ? 0 : clk_get_rate(cl->clk);
dprintk(VIDC_PROF, "Saved clock %s rate %lu\n",
cl->name, cl->rate_on_enable);
}
}
}
static void __restore_clock_rate(struct venus_hfi_device *device)
{
struct clock_info *cl;
venus_hfi_for_each_clock(device, cl) {
if (cl->has_scaling && cl->rate_on_enable) {
int rc;
rc = __set_clk_rate(device, cl, cl->rate_on_enable);
if (rc)
dprintk(VIDC_ERR,
"Failed to restore clock %s rate %lu\n",
cl->name, cl->rate_on_enable);
else
dprintk(VIDC_DBG,
"Restored clock %s rate %lu\n",
cl->name, cl->rate_on_enable);
}
}
}
/* Writes into cmdq without raising an interrupt */
static int __iface_cmdq_write_relaxed(struct venus_hfi_device *device,
void *pkt, bool *requires_interrupt)
@ -4316,6 +4352,7 @@ static inline int __suspend(struct venus_hfi_device *device)
goto err_tzbsp_suspend;
}
__save_clock_rate(device, false);
__venus_power_off(device, true);
dprintk(VIDC_PROF, "Venus power collapsed\n");
return rc;
@ -4345,6 +4382,7 @@ static inline int __resume(struct venus_hfi_device *device)
dprintk(VIDC_ERR, "Failed to power on venus\n");
goto err_venus_power_on;
}
__restore_clock_rate(device);
/* Reboot the firmware */
rc = __tzbsp_set_video_state(TZBSP_VIDEO_STATE_RESUME);
@ -4382,6 +4420,7 @@ exit:
err_reset_core:
__tzbsp_set_video_state(TZBSP_VIDEO_STATE_SUSPEND);
err_set_video_state:
__save_clock_rate(device, true);
__venus_power_off(device, true);
err_venus_power_on:
dprintk(VIDC_ERR, "Failed to resume from power collapse\n");
@ -4440,6 +4479,7 @@ fail_protect_mem:
subsystem_put(device->resources.fw.cookie);
device->resources.fw.cookie = NULL;
fail_load_fw:
__save_clock_rate(device, true);
__venus_power_off(device, true);
fail_venus_power_on:
fail_init_pkt:
@ -4461,6 +4501,7 @@ static void __unload_fw(struct venus_hfi_device *device)
__vote_buses(device, NULL, 0);
subsystem_put(device->resources.fw.cookie);
__interface_queues_release(device);
__save_clock_rate(device, true);
__venus_power_off(device, false);
device->resources.fw.cookie = NULL;
__deinit_resources(device);