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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>
This commit is contained in:
Alain Volmat 2021-07-07 10:27:01 +02:00 committed by Mark Brown
parent da18edb11c
commit 9d53541451
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 11 additions and 0 deletions
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11
drivers/spi/spi-stm32.c
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@ -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)