From: Tony Lindgren <tony@atomide.com>
To: linux-kernel@vger.kernel.org
Cc: Arnd Bergmann <arnd@arndb.de>,
Geert Uytterhoeven <geert+renesas@glider.be>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Rob Herring <robh+dt@kernel.org>,
linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
linux-omap@vger.kernel.org
Subject: [PATCHv2] drivers: bus: simple-pm-bus: Fix compatibility with simple-bus for auxdata
Date: Mon, 18 Jan 2021 09:33:40 +0200 [thread overview]
Message-ID: <20210118073340.62141-1-tony@atomide.com> (raw)
After converting am335x to probe devices with simple-pm-bus I noticed
that we are not passing auxdata for of_platform_populate() like we do
with simple-bus.
While device tree using SoCs should no longer need platform data, there
are still quite a few drivers that still need it as can be seen with
git grep OF_DEV_AUXDATA. We want to have simple-pm-bus be usable as a
replacement for simple-bus also for cases where OF_DEV_AUXDATA is still
needed.
Let's fix the issue by passing auxdata as platform data to simple-pm-bus.
That way the SoCs needing this can pass the auxdata with OF_DEV_AUXDATA.
And let's pass the auxdata for omaps to fix the issue for am335x.
As an alternative solution, adding simple-pm-bus handling directly to
drivers/of/platform.c was considered, but we would still need simple-pm-bus
device driver. So passing auxdata as platform data seems like the simplest
solution.
Fixes: 5a230524f879 ("ARM: dts: Use simple-pm-bus for genpd for am3 l4_wkup")
Signed-off-by: Tony Lindgren <tony@atomide.com>
---
Changes since v1: Updated description, added devicetree list to Cc
---
arch/arm/mach-omap2/pdata-quirks.c | 1 +
drivers/bus/simple-pm-bus.c | 3 ++-
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/arm/mach-omap2/pdata-quirks.c b/arch/arm/mach-omap2/pdata-quirks.c
--- a/arch/arm/mach-omap2/pdata-quirks.c
+++ b/arch/arm/mach-omap2/pdata-quirks.c
@@ -522,6 +522,7 @@ static struct of_dev_auxdata omap_auxdata_lookup[] = {
&dra7_ipu1_dsp_iommu_pdata),
#endif
/* Common auxdata */
+ OF_DEV_AUXDATA("simple-pm-bus", 0, NULL, omap_auxdata_lookup),
OF_DEV_AUXDATA("ti,sysc", 0, NULL, &ti_sysc_pdata),
OF_DEV_AUXDATA("pinctrl-single", 0, NULL, &pcs_pdata),
OF_DEV_AUXDATA("ti,omap-prm-inst", 0, NULL, &ti_prm_pdata),
diff --git a/drivers/bus/simple-pm-bus.c b/drivers/bus/simple-pm-bus.c
--- a/drivers/bus/simple-pm-bus.c
+++ b/drivers/bus/simple-pm-bus.c
@@ -16,6 +16,7 @@
static int simple_pm_bus_probe(struct platform_device *pdev)
{
+ const struct of_dev_auxdata *lookup = dev_get_platdata(&pdev->dev);
struct device_node *np = pdev->dev.of_node;
dev_dbg(&pdev->dev, "%s\n", __func__);
@@ -23,7 +24,7 @@ static int simple_pm_bus_probe(struct platform_device *pdev)
pm_runtime_enable(&pdev->dev);
if (np)
- of_platform_populate(np, NULL, NULL, &pdev->dev);
+ of_platform_populate(np, NULL, lookup, &pdev->dev);
return 0;
}
--
2.30.0
next reply other threads:[~2021-01-18 7:34 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-18 7:33 Tony Lindgren [this message]
2021-01-18 8:03 ` [PATCHv2] drivers: bus: simple-pm-bus: Fix compatibility with simple-bus for auxdata Geert Uytterhoeven
2021-01-18 8:30 ` Arnd Bergmann
2021-01-18 8:41 ` Tony Lindgren
2021-01-19 14:51 ` Rob Herring
2021-01-19 15:03 ` Tony Lindgren
2021-01-19 15:09 ` Rob Herring
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210118073340.62141-1-tony@atomide.com \
--to=tony@atomide.com \
--cc=arnd@arndb.de \
--cc=devicetree@vger.kernel.org \
--cc=geert+renesas@glider.be \
--cc=gregkh@linuxfoundation.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-omap@vger.kernel.org \
--cc=robh+dt@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).