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Date: Wed, 10 Jun 2020 10:00:13 -0700 From: Sowjanya Komatineni <skomatineni@...dia.com> To: Dmitry Osipenko <digetx@...il.com>, <thierry.reding@...il.com>, <jonathanh@...dia.com>, <frankc@...dia.com>, <hverkuil@...all.nl>, <sakari.ailus@....fi>, <robh+dt@...nel.org>, <helen.koike@...labora.com> CC: <sboyd@...nel.org>, <gregkh@...uxfoundation.org>, <linux-media@...r.kernel.org>, <devicetree@...r.kernel.org>, <linux-tegra@...r.kernel.org>, <linux-kernel@...r.kernel.org>, <linux-i2c@...r.kernel.org> Subject: Re: [RFC PATCH v1 13/18] gpu: host1x: mipi: Add of_tegra_mipi_request() API On 6/10/20 6:33 AM, Dmitry Osipenko wrote: > 10.06.2020 09:02, Sowjanya Komatineni пишет: >> This patch adds an API of_tegra_mipi_request() to allow creating >> mipi device for specific device node rather than a device so Tegra >> CSI driver can use it for calibrating MIPI pads for each stream >> independently. >> >> Signed-off-by: Sowjanya Komatineni <skomatineni@...dia.com> >> --- >> drivers/gpu/host1x/mipi.c | 10 ++++++++-- >> include/linux/host1x.h | 2 ++ >> 2 files changed, 10 insertions(+), 2 deletions(-) >> >> diff --git a/drivers/gpu/host1x/mipi.c b/drivers/gpu/host1x/mipi.c >> index e00809d..f51fe69 100644 >> --- a/drivers/gpu/host1x/mipi.c >> +++ b/drivers/gpu/host1x/mipi.c >> @@ -206,9 +206,9 @@ static int tegra_mipi_power_down(struct tegra_mipi *mipi) >> return 0; >> } >> >> -struct tegra_mipi_device *tegra_mipi_request(struct device *device) >> +struct tegra_mipi_device *of_tegra_mipi_request(struct device *device, >> + struct device_node *np) >> { >> - struct device_node *np = device->of_node; >> struct tegra_mipi_device *dev; >> struct of_phandle_args args; >> int err; >> @@ -252,6 +252,12 @@ struct tegra_mipi_device *tegra_mipi_request(struct device *device) >> of_node_put(args.np); >> return ERR_PTR(err); >> } >> +EXPORT_SYMBOL(of_tegra_mipi_request); >> + >> +struct tegra_mipi_device *tegra_mipi_request(struct device *device) >> +{ >> + return of_tegra_mipi_request(device, device->of_node); >> +} >> EXPORT_SYMBOL(tegra_mipi_request); >> >> void tegra_mipi_free(struct tegra_mipi_device *device) >> diff --git a/include/linux/host1x.h b/include/linux/host1x.h >> index c230b4e..a61ca52 100644 >> --- a/include/linux/host1x.h >> +++ b/include/linux/host1x.h >> @@ -325,6 +325,8 @@ int host1x_client_resume(struct host1x_client *client); >> >> struct tegra_mipi_device; >> >> +struct tegra_mipi_device *of_tegra_mipi_request(struct device *device, >> + struct device_node *np); > Looks like adding a new function here is a bit of overkill. What about > to change tegra_mipi_request() to take the node argument? thought to avoid changes to existing usage of that function in other drivers. Will update in v2.
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