| Message ID | 87io4q97s7.wl%kuninori.morimoto.gx@renesas.com (mailing list archive) |
|---|---|
| State | Not Applicable |
| Delegated to: | Geert Uytterhoeven |
| Headers | show |
Morimoto-san, On Wed, Nov 25, 2015 at 01:45:14AM +0000, Kuninori Morimoto wrote: > > From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> > > Current rcar thermal driver is using 90 degrees as trip temp, but it > should be based on each SoC / platform. > This patch enables to set trip temp via DT. (It uses db8500-thermal > style for it) > It will use 90 degrees as default trip temp if DT doesn't have it. > > Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> > --- > .../devicetree/bindings/thermal/rcar-thermal.txt | 2 ++ > drivers/thermal/rcar_thermal.c | 34 ++++++++++++++++++++-- > 2 files changed, 33 insertions(+), 3 deletions(-) > > diff --git a/Documentation/devicetree/bindings/thermal/rcar-thermal.txt b/Documentation/devicetree/bindings/thermal/rcar-thermal.txt > index 332e625..6c57f7e 100644 > --- a/Documentation/devicetree/bindings/thermal/rcar-thermal.txt > +++ b/Documentation/devicetree/bindings/thermal/rcar-thermal.txt > @@ -18,6 +18,8 @@ Required properties: > Option properties: > > - interrupts : use interrupt > +- tripN-temp : temperature of trip point N. it will use 90000 as default > + if DT doesn't have tripN-temp First of all, you are creating an entry with is specific to your driver. That requires it to use proper prefixing. Besides, your property is already covered by of-thermal. Please convert your driver to use of-thermal, this way it will give you the flexibility to configure thermal data in DT. BR, -- To unsubscribe from this list: send the line "unsubscribe linux-sh" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Hi Eduardo Thank you for your feedback > > From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> > > > > Current rcar thermal driver is using 90 degrees as trip temp, but it > > should be based on each SoC / platform. > > This patch enables to set trip temp via DT. (It uses db8500-thermal > > style for it) > > It will use 90 degrees as default trip temp if DT doesn't have it. > > > > Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> > > --- > > .../devicetree/bindings/thermal/rcar-thermal.txt | 2 ++ > > drivers/thermal/rcar_thermal.c | 34 ++++++++++++++++++++-- > > 2 files changed, 33 insertions(+), 3 deletions(-) > > > > diff --git a/Documentation/devicetree/bindings/thermal/rcar-thermal.txt b/Documentation/devicetree/bindings/thermal/rcar-thermal.txt > > index 332e625..6c57f7e 100644 > > --- a/Documentation/devicetree/bindings/thermal/rcar-thermal.txt > > +++ b/Documentation/devicetree/bindings/thermal/rcar-thermal.txt > > @@ -18,6 +18,8 @@ Required properties: > > Option properties: > > > > - interrupts : use interrupt > > +- tripN-temp : temperature of trip point N. it will use 90000 as default > > + if DT doesn't have tripN-temp > > First of all, you are creating an entry with is specific to your driver. > That requires it to use proper prefixing. > > Besides, your property is already covered by of-thermal. Please convert > your driver to use of-thermal, this way it will give you the flexibility > to configure thermal data in DT. I see, but we need to keep compatibility for non-DT SoC. (This driver is used from both DT, non-DT SoC) Then, I noticed we can use .set_trip_temp, and it is very enough for us. -- To unsubscribe from this list: send the line "unsubscribe linux-sh" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Hi Morimoto-san, On Wed, Nov 25, 2015 at 6:23 AM, Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> wrote: >> Besides, your property is already covered by of-thermal. Please convert >> your driver to use of-thermal, this way it will give you the flexibility >> to configure thermal data in DT. > > I see, but we need to keep compatibility for non-DT SoC. > (This driver is used from both DT, non-DT SoC) Which SoCs with non-DT support use this driver in mainline? Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds -- To unsubscribe from this list: send the line "unsubscribe linux-sh" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Hi Geert > <kuninori.morimoto.gx@renesas.com> wrote: > >> Besides, your property is already covered by of-thermal. Please convert > >> your driver to use of-thermal, this way it will give you the flexibility > >> to configure thermal data in DT. > > > > I see, but we need to keep compatibility for non-DT SoC. > > (This driver is used from both DT, non-DT SoC) > > Which SoCs with non-DT support use this driver in mainline? Oops, my bad. I thought that this driver was used from SH too, but it didn't. -- To unsubscribe from this list: send the line "unsubscribe linux-sh" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/Documentation/devicetree/bindings/thermal/rcar-thermal.txt b/Documentation/devicetree/bindings/thermal/rcar-thermal.txt index 332e625..6c57f7e 100644 --- a/Documentation/devicetree/bindings/thermal/rcar-thermal.txt +++ b/Documentation/devicetree/bindings/thermal/rcar-thermal.txt @@ -18,6 +18,8 @@ Required properties: Option properties: - interrupts : use interrupt +- tripN-temp : temperature of trip point N. it will use 90000 as default + if DT doesn't have tripN-temp Example (non interrupt support): diff --git a/drivers/thermal/rcar_thermal.c b/drivers/thermal/rcar_thermal.c index 5d4ae7d..d1d0b58 100644 --- a/drivers/thermal/rcar_thermal.c +++ b/drivers/thermal/rcar_thermal.c @@ -63,6 +63,7 @@ struct rcar_thermal_priv { struct mutex lock; struct list_head list; int id; + int trip_temp; u32 ctemp; }; @@ -222,7 +223,7 @@ static int rcar_thermal_get_trip_type(struct thermal_zone_device *zone, /* see rcar_thermal_get_temp() */ switch (trip) { - case 0: /* +90 <= temp */ + case 0: *type = THERMAL_TRIP_CRITICAL; break; default: @@ -241,8 +242,8 @@ static int rcar_thermal_get_trip_temp(struct thermal_zone_device *zone, /* see rcar_thermal_get_temp() */ switch (trip) { - case 0: /* +90 <= temp */ - *temp = MCELSIUS(90); + case 0: + *temp = priv->trip_temp; break; default: dev_err(dev, "rcar driver trip error\n"); @@ -361,6 +362,30 @@ static irqreturn_t rcar_thermal_irq(int irq, void *data) /* * platform functions */ +static void rcar_thermal_of_parse(struct rcar_thermal_priv *priv) +{ + struct device *dev = rcar_priv_to_dev(priv); + struct device_node *np = dev->of_node; + char prop_name[32]; + s32 val; + + /* + * let's use db8500 thermal style + */ + sprintf(prop_name, "trip%d-temp", priv->id); + if (of_property_read_s32(np, prop_name, &val)) + return; + + if (val < -45000 || + val > 125000) { + dev_err(dev, "unsupported trip temp, use default\n"); + return; + } + + /* overwrite trip temp */ + priv->trip_temp = val; +} + static int rcar_thermal_probe(struct platform_device *pdev) { struct rcar_thermal_common *common; @@ -418,11 +443,14 @@ static int rcar_thermal_probe(struct platform_device *pdev) priv->common = common; priv->id = i; + priv->trip_temp = MCELSIUS(90); /* default*/ mutex_init(&priv->lock); INIT_LIST_HEAD(&priv->list); INIT_DELAYED_WORK(&priv->work, rcar_thermal_work); rcar_thermal_update_temp(priv); + rcar_thermal_of_parse(priv); + priv->zone = thermal_zone_device_register("rcar_thermal", 1, 0, priv, &rcar_thermal_zone_ops, NULL, 0,