* [PATCH] mfd: motorola-cpcap: Disable interrupt for suspend
@ 2020-07-06 18:39 Tony Lindgren
2020-07-16 14:57 ` Lee Jones
0 siblings, 1 reply; 2+ messages in thread
From: Tony Lindgren @ 2020-07-06 18:39 UTC (permalink / raw)
To: Lee Jones; +Cc: linux-kernel, Merlijn Wajer, Pavel Machek, Sebastian Reichel
Otherwise we get spammed with errors on resume after rtcwake:
cpcap-core spi0.0: Failed to read IRQ status: -108
Note that rtcwake is still capable of waking up the system with
this patch.
Cc: Merlijn Wajer <merlijn@wizzup.org>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
---
This has always been broken so can be merged whenever.
---
drivers/mfd/motorola-cpcap.c | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
diff --git a/drivers/mfd/motorola-cpcap.c b/drivers/mfd/motorola-cpcap.c
--- a/drivers/mfd/motorola-cpcap.c
+++ b/drivers/mfd/motorola-cpcap.c
@@ -214,6 +214,28 @@ static const struct regmap_config cpcap_regmap_config = {
.val_format_endian = REGMAP_ENDIAN_LITTLE,
};
+#ifdef CONFIG_PM_SLEEP
+static int cpcap_suspend(struct device *dev)
+{
+ struct spi_device *spi = to_spi_device(dev);
+
+ disable_irq(spi->irq);
+
+ return 0;
+}
+
+static int cpcap_resume(struct device *dev)
+{
+ struct spi_device *spi = to_spi_device(dev);
+
+ enable_irq(spi->irq);
+
+ return 0;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(cpcap_pm, cpcap_suspend, cpcap_resume);
+
static const struct mfd_cell cpcap_mfd_devices[] = {
{
.name = "cpcap_adc",
@@ -313,6 +335,7 @@ static struct spi_driver cpcap_driver = {
.driver = {
.name = "cpcap-core",
.of_match_table = cpcap_of_match,
+ .pm = &cpcap_pm,
},
.probe = cpcap_probe,
};
--
2.27.0
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH] mfd: motorola-cpcap: Disable interrupt for suspend
2020-07-06 18:39 [PATCH] mfd: motorola-cpcap: Disable interrupt for suspend Tony Lindgren
@ 2020-07-16 14:57 ` Lee Jones
0 siblings, 0 replies; 2+ messages in thread
From: Lee Jones @ 2020-07-16 14:57 UTC (permalink / raw)
To: Tony Lindgren
Cc: linux-kernel, Merlijn Wajer, Pavel Machek, Sebastian Reichel
On Mon, 06 Jul 2020, Tony Lindgren wrote:
> Otherwise we get spammed with errors on resume after rtcwake:
>
> cpcap-core spi0.0: Failed to read IRQ status: -108
>
> Note that rtcwake is still capable of waking up the system with
> this patch.
>
> Cc: Merlijn Wajer <merlijn@wizzup.org>
> Cc: Pavel Machek <pavel@ucw.cz>
> Cc: Sebastian Reichel <sebastian.reichel@collabora.com>
> Signed-off-by: Tony Lindgren <tony@atomide.com>
> ---
>
> This has always been broken so can be merged whenever.
>
> ---
> drivers/mfd/motorola-cpcap.c | 23 +++++++++++++++++++++++
> 1 file changed, 23 insertions(+)
Applied, thanks.
--
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
Follow Linaro: Facebook | Twitter | Blog
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