mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-27 19:29:37 +00:00
spi: imx: fix runtime pm support for !CONFIG_PM
525c9e5a32
introduced pm_runtime support for the i.MX SPI driver. With this pm_runtime is used to bring up the clocks initially. When CONFIG_PM is disabled the clocks are no longer enabled and the driver doesn't work anymore. Fix this by enabling the clocks in the probe function and telling pm_runtime that the device is active using pm_runtime_set_active(). Fixes:525c9e5a32
spi: imx: enable runtime pm support Tested-by: Christian Eggers <ceggers@arri.de> [tested for !CONFIG_PM only] Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Link: https://lore.kernel.org/r/20201021104513.21560-1-s.hauer@pengutronix.de Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
parent
855a40cd8c
commit
43b6bf406c
1 changed files with 15 additions and 8 deletions
|
@ -1676,15 +1676,18 @@ static int spi_imx_probe(struct platform_device *pdev)
|
|||
goto out_master_put;
|
||||
}
|
||||
|
||||
pm_runtime_enable(spi_imx->dev);
|
||||
ret = clk_prepare_enable(spi_imx->clk_per);
|
||||
if (ret)
|
||||
goto out_master_put;
|
||||
|
||||
ret = clk_prepare_enable(spi_imx->clk_ipg);
|
||||
if (ret)
|
||||
goto out_put_per;
|
||||
|
||||
pm_runtime_set_autosuspend_delay(spi_imx->dev, MXC_RPM_TIMEOUT);
|
||||
pm_runtime_use_autosuspend(spi_imx->dev);
|
||||
|
||||
ret = pm_runtime_get_sync(spi_imx->dev);
|
||||
if (ret < 0) {
|
||||
dev_err(spi_imx->dev, "failed to enable clock\n");
|
||||
goto out_runtime_pm_put;
|
||||
}
|
||||
pm_runtime_set_active(spi_imx->dev);
|
||||
pm_runtime_enable(spi_imx->dev);
|
||||
|
||||
spi_imx->spi_clk = clk_get_rate(spi_imx->clk_per);
|
||||
/*
|
||||
|
@ -1719,8 +1722,12 @@ static int spi_imx_probe(struct platform_device *pdev)
|
|||
|
||||
out_runtime_pm_put:
|
||||
pm_runtime_dont_use_autosuspend(spi_imx->dev);
|
||||
pm_runtime_put_sync(spi_imx->dev);
|
||||
pm_runtime_set_suspended(&pdev->dev);
|
||||
pm_runtime_disable(spi_imx->dev);
|
||||
|
||||
clk_disable_unprepare(spi_imx->clk_ipg);
|
||||
out_put_per:
|
||||
clk_disable_unprepare(spi_imx->clk_per);
|
||||
out_master_put:
|
||||
spi_master_put(master);
|
||||
|
||||
|
|
Loading…
Reference in a new issue