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cAVS: pm_runtime: change to use bool flag to denote the DSP target state 

Remove the usage of refcount dsp_d0_sref, and use bool flag dsp_d0 to
denote is the DSP target state is D0 or D0ix (Low power mode).

This will simplify the logic of use of LPS and clock switching.

Signed-off-by: Keyon Jie <yang.jie@linux.intel.com>
This commit is contained in:
Keyon Jie 2020-07-29 18:12:30 +08:00 committed by Janusz Jankowski
parent 1b49c6a05b
commit 21573f449a
2 changed files with 5 additions and 6 deletions
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2
src/platform/intel/cavs/include/cavs/lib/pm_runtime.h
View File

@ -20,7 +20,7 @@ struct pm_runtime_data;
/** \brief cAVS specific runtime power management data. */
struct cavs_pm_runtime_data {
int dsp_d0_sref; /**< simple ref counter, accessed by core 0 only */
bool dsp_d0; /**< dsp target D0(true) or D0ix(false) */
int host_dma_l1_sref; /**< ref counter for Host DMA accesses */
uint32_t sleep_core_mask; /**< represents cores in waiti state */
};

9
src/platform/intel/cavs/lib/pm_runtime.c
View File

@ -97,14 +97,14 @@ static inline void cavs_pm_runtime_enable_dsp(bool enable)
*/
irq_local_disable(flags);
enable ? --pprd->dsp_d0_sref : ++pprd->dsp_d0_sref;
pprd->dsp_d0 = !enable;
platform_shared_commit(prd, sizeof(*prd));
irq_local_enable(flags);
tr_info(&power_tr, "pm_runtime_enable_dsp dsp_d0_sref %d",
pprd->dsp_d0_sref);
pprd->dsp_d0);
platform_shared_commit(pprd, sizeof(*pprd));
@ -114,7 +114,7 @@ static inline void cavs_pm_runtime_enable_dsp(bool enable)
if (!clk_info)
return;
if (pprd->dsp_d0_sref > 0) {
if (pprd->dsp_d0) {
if (clk_info->current_freq_idx == CPU_LPRO_FREQ_IDX)
report_dsp_r_state(r1_r_state);
else
@ -129,12 +129,11 @@ static inline bool cavs_pm_runtime_is_active_dsp(void)
{
struct pm_runtime_data *prd = pm_runtime_data_get();
struct cavs_pm_runtime_data *pprd = prd->platform_data;
int is_active = pprd->dsp_d0_sref > 0;
platform_shared_commit(prd, sizeof(*prd));
platform_shared_commit(pprd, sizeof(*pprd));
return is_active;
return pprd->dsp_d0;
}
#if CONFIG_INTEL_SSP