| Message ID | 57CFD031.7020500@sigmadesigns.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Wednesday, September 7, 2016 10:30:41 AM CEST Marc Gonzalez wrote: > When this platform is suspended, firmware powers the entire SoC down, > except a few hardware blocks waiting for wakeup events. There is no > context to save for this particular block. > > Therefore, there is nothing useful for the driver to do on suspend; > so we define a NULL suspend hook. On resume, the driver initializes > the block exactly as is done in the probe callback. > > Reviewed-by: Kevin Hilman <khilman@baylibre.com> > Signed-off-by: Marc Gonzalez <marc_gonzalez@sigmadesigns.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de>
On 07/09/2016 10:55, Arnd Bergmann wrote: > On Wednesday, September 7, 2016 10:30:41 AM CEST Marc Gonzalez wrote: > >> When this platform is suspended, firmware powers the entire SoC down, >> except a few hardware blocks waiting for wakeup events. There is no >> context to save for this particular block. >> >> Therefore, there is nothing useful for the driver to do on suspend; >> so we define a NULL suspend hook. On resume, the driver initializes >> the block exactly as is done in the probe callback. >> >> Reviewed-by: Kevin Hilman <khilman@baylibre.com> >> Signed-off-by: Marc Gonzalez <marc_gonzalez@sigmadesigns.com> > > Reviewed-by: Arnd Bergmann <arnd@arndb.de> Hello Rui, Eduardo, The present patch has been reviewed by both Kevin Hilman and Arnd Bergmann, two arm-soc maintainers. Can you pick it up in time for inclusion in v4.9? Regards.
On 三, 2016-09-14 at 17:35 +0200, Marc Gonzalez wrote: > On 07/09/2016 10:55, Arnd Bergmann wrote: > > > > > On Wednesday, September 7, 2016 10:30:41 AM CEST Marc Gonzalez > > wrote: > > > > > > > > When this platform is suspended, firmware powers the entire SoC > > > down, > > > except a few hardware blocks waiting for wakeup events. There is > > > no > > > context to save for this particular block. > > > > > > Therefore, there is nothing useful for the driver to do on > > > suspend; > > > so we define a NULL suspend hook. On resume, the driver > > > initializes > > > the block exactly as is done in the probe callback. > > > > > > Reviewed-by: Kevin Hilman <khilman@baylibre.com> > > > Signed-off-by: Marc Gonzalez <marc_gonzalez@sigmadesigns.com> > > Reviewed-by: Arnd Bergmann <arnd@arndb.de> > Hello Rui, Eduardo, > > The present patch has been reviewed by both Kevin Hilman and Arnd > Bergmann, > two arm-soc maintainers. Can you pick it up in time for inclusion in > v4.9? It has already been in thermal -release branch for a while, and queued for 4.9. thanks, rui > > Regards. > > -- > To unsubscribe from this list: send the line "unsubscribe linux-pm" > in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html
On 18/09/2016 03:58, Zhang Rui wrote: > On 2016-09-14 at 17:35 +0200, Marc Gonzalez wrote: > >> Hello Rui, Eduardo, >> >> The present patch has been reviewed by both Kevin Hilman and Arnd Bergmann, >> two arm-soc maintainers. Can you pick it up in time for inclusion in v4.9? > > It has already been in thermal -release branch for a while, and queued > for 4.9. Sorry, I was expecting an ACK on the list. It never occurred to me to check your tree. Thanks for taking the patch. https://git.kernel.org/cgit/linux/kernel/git/rzhang/linux.git/commit/?h=release&id=186e2aa3954c3201583e5ec3149faa6caa67d2b9 Regards.
diff --git a/drivers/thermal/tango_thermal.c b/drivers/thermal/tango_thermal.c index 70e0d9f406e9..201304aeafeb 100644 --- a/drivers/thermal/tango_thermal.c +++ b/drivers/thermal/tango_thermal.c @@ -64,6 +64,12 @@ static const struct thermal_zone_of_device_ops ops = { .get_temp = tango_get_temp, }; +static void tango_thermal_init(struct tango_thermal_priv *priv) +{ + writel(0, priv->base + TEMPSI_CFG); + writel(CMD_ON, priv->base + TEMPSI_CMD); +} + static int tango_thermal_probe(struct platform_device *pdev) { struct resource *res; @@ -79,14 +85,22 @@ static int tango_thermal_probe(struct platform_device *pdev) if (IS_ERR(priv->base)) return PTR_ERR(priv->base); + platform_set_drvdata(pdev, priv); priv->thresh_idx = IDX_MIN; - writel(0, priv->base + TEMPSI_CFG); - writel(CMD_ON, priv->base + TEMPSI_CMD); + tango_thermal_init(priv); tzdev = devm_thermal_zone_of_sensor_register(&pdev->dev, 0, priv, &ops); return PTR_ERR_OR_ZERO(tzdev); } +static int __maybe_unused tango_thermal_resume(struct device *dev) +{ + tango_thermal_init(dev_get_drvdata(dev)); + return 0; +} + +static SIMPLE_DEV_PM_OPS(tango_thermal_pm, NULL, tango_thermal_resume); + static const struct of_device_id tango_sensor_ids[] = { { .compatible = "sigma,smp8758-thermal", @@ -99,6 +113,7 @@ static struct platform_driver tango_thermal_driver = { .driver = { .name = "tango-thermal", .of_match_table = tango_sensor_ids, + .pm = &tango_thermal_pm, }, };