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| author | Alain Volmat <alain.volmat@foss.st.com> | 2021-07-07 10:27:01 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2021-07-12 00:51:39 +0200 |
| commit | 9d5354145104cf392568a948c5ce2cb97f373fd7 (patch) | |
| tree | 870f1ab5d4aa87245b61ed92d9e78a9df4961186 /drivers/spi/spi-stm32.c | |
| parent | Merge existing fixes from spi/for-5.14 (diff) | |
| download | linux-9d5354145104cf392568a948c5ce2cb97f373fd7.tar.xz linux-9d5354145104cf392568a948c5ce2cb97f373fd7.zip | |
spi: stm32: enable pm_runtime autosuspend
This commit enables the pm_runtime autosuspend
and sets a 1ms autosuspend delay.
Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>
Link: https://lore.kernel.org/r/1625646426-5826-3-git-send-email-alain.volmat@foss.st.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spi-stm32.c')
| -rw-r--r-- | drivers/spi/spi-stm32.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/spi/spi-stm32.c b/drivers/spi/spi-stm32.c index 05618a618939..4dbd5cbe0c11 100644 --- a/drivers/spi/spi-stm32.c +++ b/drivers/spi/spi-stm32.c @@ -162,6 +162,8 @@ #define SPI_3WIRE_TX 3 #define SPI_3WIRE_RX 4 +#define STM32_SPI_AUTOSUSPEND_DELAY 1 /* 1 ms */ + /* * use PIO for small transfers, avoiding DMA setup/teardown overhead for drivers * without fifo buffers. @@ -1927,6 +1929,9 @@ static int stm32_spi_probe(struct platform_device *pdev) if (spi->dma_tx || spi->dma_rx) master->can_dma = stm32_spi_can_dma; + pm_runtime_set_autosuspend_delay(&pdev->dev, + STM32_SPI_AUTOSUSPEND_DELAY); + pm_runtime_use_autosuspend(&pdev->dev); pm_runtime_set_active(&pdev->dev); pm_runtime_get_noresume(&pdev->dev); pm_runtime_enable(&pdev->dev); @@ -1938,6 +1943,9 @@ static int stm32_spi_probe(struct platform_device *pdev) goto err_pm_disable; } + pm_runtime_mark_last_busy(&pdev->dev); + pm_runtime_put_autosuspend(&pdev->dev); + dev_info(&pdev->dev, "driver initialized\n"); return 0; @@ -1946,6 +1954,7 @@ err_pm_disable: pm_runtime_disable(&pdev->dev); pm_runtime_put_noidle(&pdev->dev); pm_runtime_set_suspended(&pdev->dev); + pm_runtime_dont_use_autosuspend(&pdev->dev); err_dma_release: if (spi->dma_tx) dma_release_channel(spi->dma_tx); @@ -1970,6 +1979,8 @@ static int stm32_spi_remove(struct platform_device *pdev) pm_runtime_disable(&pdev->dev); pm_runtime_put_noidle(&pdev->dev); pm_runtime_set_suspended(&pdev->dev); + pm_runtime_dont_use_autosuspend(&pdev->dev); + if (master->dma_tx) dma_release_channel(master->dma_tx); if (master->dma_rx) |