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drivers: gpdma: enable clock gating

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This patch is adding function enabling DMA clock gating.

Signed-off-by: Tomasz Leman <tomasz.m.leman@intel.com>
This commit is contained in:
Tomasz Leman 2023-02-06 15:40:46 +01:00 • committed by Carles Cufí
commit 8575a6037b
1 changed files with 16 additions and 0 deletions
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16
drivers/dma/dma_intel_adsp_gpdma.c
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@ -255,6 +255,19 @@ static void intel_adsp_gpdma_clock_enable(const struct device *dev)
sys_write32(val, reg);
}
#ifdef CONFIG_PM_DEVICE
static void intel_adsp_gpdma_clock_disable(const struct device *dev)
{
#ifdef CONFIG_SOC_SERIES_INTEL_ACE
const struct intel_adsp_gpdma_cfg *const dev_cfg = dev->config;
uint32_t reg = dev_cfg->shim + GPDMA_CTL_OFFSET;
uint32_t val = sys_read32(reg) & ~GPDMA_CTL_DGCD;
sys_write32(val, reg);
#endif
}
#endif
static void intel_adsp_gpdma_claim_ownership(const struct device *dev)
{
#ifdef CONFIG_DMA_INTEL_ADSP_GPDMA_NEED_CONTROLLER_OWNERSHIP
@ -361,6 +374,9 @@ static int intel_adsp_gpdma_power_off(const struct device *dev)
{
LOG_INF("%s: dma %s power off", __func__,
dev->name);
/* Enabling dynamic clock gating */
intel_adsp_gpdma_clock_disable(dev);
/* Relesing DMA ownership*/
intel_adsp_gpdma_release_ownership(dev);
#ifdef CONFIG_SOC_SERIES_INTEL_ACE