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spi: spi-qcom-qspi: Support pinctrl sleep states

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It's fairly common practice for drivers to switch to a "sleep" pinctrl
state at the end of its runtime_suspend function and then back to
"default" at the beginning of runtime_resume. Let's do that for
spi-qcom-qspi.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/20230323102605.5.I79544b9486033bd7b27f2be55adda6d36f62a366@changeid
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Douglas Anderson 2023-03-23 10:30:09 -07:00 committed by Mark Brown
parent 5936e77c20
commit 0098c52745
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1 changed files with 5 additions and 0 deletions
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5
drivers/spi/spi-qcom-qspi.c
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@ -8,6 +8,7 @@
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_platform.h>
#include <linux/pinctrl/consumer.h>
#include <linux/pm_runtime.h>
#include <linux/pm_opp.h>
#include <linux/spi/spi.h>
@ -579,6 +580,8 @@ static int __maybe_unused qcom_qspi_runtime_suspend(struct device *dev)
return ret;
}
pinctrl_pm_select_sleep_state(dev);
return 0;
}
@ -588,6 +591,8 @@ static int __maybe_unused qcom_qspi_runtime_resume(struct device *dev)
struct qcom_qspi *ctrl = spi_master_get_devdata(master);
int ret;
pinctrl_pm_select_default_state(dev);
ret = icc_enable(ctrl->icc_path_cpu_to_qspi);
if (ret) {
dev_err_ratelimited(ctrl->dev, "%s: ICC enable failed for cpu: %d\n",