Unverified Commit 9d535414 authored by Alain Volmat's avatar Alain Volmat Committed by Mark Brown
Browse files

spi: stm32: enable pm_runtime autosuspend 



This commit enables the pm_runtime autosuspend
and sets a 1ms autosuspend delay.

Signed-off-by: default avatarAlain 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: default avatarMark Brown <broonie@kernel.org>
parent da18edb1

drivers/spi/spi-stm32.c

+11 −0
Original line number Diff line number Diff line
@@ -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 @@ static int stm32_spi_probe(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);

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)