Message ID | 20230221152804.6061-3-marex@denx.de (mailing list archive) |
---|---|
State | New, archived |
Headers | show |
Series | [v3,1/4] dt-bindings: soc: imx8mp-media-blk-ctrl: Align block controller example name | expand |
Hi Marek, Am Dienstag, dem 21.02.2023 um 16:28 +0100 schrieb Marek Vasut: > This particular block can have DT subnodes describing the LVDS LDB > bridge. Instead of misusing simple-bus to scan for those nodes, do > the scan within the driver. > > Reviewed-by: Liu Ying <victor.liu@nxp.com> > Fixes: 94e6197dadc9 ("arm64: dts: imx8mp: Add LCDIF2 & LDB nodes") > Signed-off-by: Marek Vasut <marex@denx.de> > --- > Cc: Alexander Stein <alexander.stein@ew.tq-group.com> > Cc: Fabio Estevam <festevam@gmail.com> > Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org> > Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> > Cc: Lucas Stach <l.stach@pengutronix.de> > Cc: NXP Linux Team <linux-imx@nxp.com> > Cc: Paul Elder <paul.elder@ideasonboard.com> > Cc: Peng Fan <peng.fan@nxp.com> > Cc: Pengutronix Kernel Team <kernel@pengutronix.de> > Cc: Richard Cochran <richardcochran@gmail.com> > Cc: Richard Zhu <hongxing.zhu@nxp.com> > Cc: Rob Herring <robh+dt@kernel.org> > Cc: Sascha Hauer <s.hauer@pengutronix.de> > Cc: Shawn Guo <shawnguo@kernel.org> > Cc: devicetree@vger.kernel.org > Cc: linux-arm-kernel@lists.infradead.org > --- > V2: - Turn this into 3/4 > - Warn and continue in case of error > V3: Add RB from Liu > --- > drivers/soc/imx/imx8m-blk-ctrl.c | 9 +++++++++ > 1 file changed, 9 insertions(+) > > diff --git a/drivers/soc/imx/imx8m-blk-ctrl.c b/drivers/soc/imx/imx8m-blk-ctrl.c > index 399cb85105a18..4f5736e612fb0 100644 > --- a/drivers/soc/imx/imx8m-blk-ctrl.c > +++ b/drivers/soc/imx/imx8m-blk-ctrl.c > @@ -169,7 +169,9 @@ static int imx8m_blk_ctrl_probe(struct platform_device *pdev) > { > const struct imx8m_blk_ctrl_data *bc_data; > struct device *dev = &pdev->dev; > + struct platform_device *child; > struct imx8m_blk_ctrl *bc; > + struct device_node *np; > void __iomem *base; > int i, ret; > > @@ -310,6 +312,13 @@ static int imx8m_blk_ctrl_probe(struct platform_device *pdev) > > dev_set_drvdata(dev, bc); > > + for_each_child_of_node(dev->of_node, np) { > + child = of_platform_device_create(np, NULL, dev); > + if (child) > + continue; > + dev_warn(dev, "failed to create device for %pOF\n", np); > + } Any reason for not using devm_of_platform_populate() instead? Regards, Lucas > + > return 0; > > cleanup_provider:
On 2/21/23 18:09, Lucas Stach wrote: [...] >> @@ -310,6 +312,13 @@ static int imx8m_blk_ctrl_probe(struct platform_device *pdev) >> >> dev_set_drvdata(dev, bc); >> >> + for_each_child_of_node(dev->of_node, np) { >> + child = of_platform_device_create(np, NULL, dev); >> + if (child) >> + continue; >> + dev_warn(dev, "failed to create device for %pOF\n", np); >> + } > > Any reason for not using devm_of_platform_populate() instead? Yes, lack of awareness of that option. Do I read it right that this gets rid of the whole loop implementation here and replaces it with single function call ?
On Tue, 2023-02-21 at 16:28 +0100, Marek Vasut wrote: > This particular block can have DT subnodes describing the LVDS LDB > bridge. Instead of misusing simple-bus to scan for those nodes, do > the scan within the driver. > > Reviewed-by: Liu Ying <victor.liu@nxp.com> > Fixes: 94e6197dadc9 ("arm64: dts: imx8mp: Add LCDIF2 & LDB nodes") > Signed-off-by: Marek Vasut <marex@denx.de> > --- > Cc: Alexander Stein <alexander.stein@ew.tq-group.com> > Cc: Fabio Estevam <festevam@gmail.com> > Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org> > Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> > Cc: Lucas Stach <l.stach@pengutronix.de> > Cc: NXP Linux Team <linux-imx@nxp.com> > Cc: Paul Elder <paul.elder@ideasonboard.com> > Cc: Peng Fan <peng.fan@nxp.com> > Cc: Pengutronix Kernel Team <kernel@pengutronix.de> > Cc: Richard Cochran <richardcochran@gmail.com> > Cc: Richard Zhu <hongxing.zhu@nxp.com> > Cc: Rob Herring <robh+dt@kernel.org> > Cc: Sascha Hauer <s.hauer@pengutronix.de> > Cc: Shawn Guo <shawnguo@kernel.org> > Cc: devicetree@vger.kernel.org > Cc: linux-arm-kernel@lists.infradead.org > --- > V2: - Turn this into 3/4 > - Warn and continue in case of error > V3: Add RB from Liu > --- > drivers/soc/imx/imx8m-blk-ctrl.c | 9 +++++++++ > 1 file changed, 9 insertions(+) > > diff --git a/drivers/soc/imx/imx8m-blk-ctrl.c b/drivers/soc/imx/imx8m-blk-ctrl.c > index 399cb85105a18..4f5736e612fb0 100644 > --- a/drivers/soc/imx/imx8m-blk-ctrl.c > +++ b/drivers/soc/imx/imx8m-blk-ctrl.c > @@ -169,7 +169,9 @@ static int imx8m_blk_ctrl_probe(struct platform_device *pdev) > { > const struct imx8m_blk_ctrl_data *bc_data; > struct device *dev = &pdev->dev; > + struct platform_device *child; > struct imx8m_blk_ctrl *bc; > + struct device_node *np; > void __iomem *base; > int i, ret; > > @@ -310,6 +312,13 @@ static int imx8m_blk_ctrl_probe(struct platform_device *pdev) > > dev_set_drvdata(dev, bc); > > + for_each_child_of_node(dev->of_node, np) { > + child = of_platform_device_create(np, NULL, dev); > + if (child) > + continue; > + dev_warn(dev, "failed to create device for %pOF\n", np); > + } I'm just aware of that it's necessary to call of_platform_device_destroy() for each created child device in imx8m_blk_ctrl_remove(). But, it doesn't seem to be easy. So, I'd like to retrieve my R-b tag, sorry. Regards, Liu Ying > + > return 0; > > cleanup_provider:
Am Dienstag, dem 21.02.2023 um 19:57 +0100 schrieb Marek Vasut: > On 2/21/23 18:09, Lucas Stach wrote: > > [...] > > > > @@ -310,6 +312,13 @@ static int imx8m_blk_ctrl_probe(struct platform_device *pdev) > > > > > > dev_set_drvdata(dev, bc); > > > > > > + for_each_child_of_node(dev->of_node, np) { > > > + child = of_platform_device_create(np, NULL, dev); > > > + if (child) > > > + continue; > > > + dev_warn(dev, "failed to create device for %pOF\n", np); > > > + } > > > > Any reason for not using devm_of_platform_populate() instead? > > Yes, lack of awareness of that option. > > Do I read it right that this gets rid of the whole loop implementation > here and replaces it with single function call ? That's right. And it will also do the necessary of_platform_device_destroy() to clean things up when the parent device is removed. Regards, Lucas
diff --git a/drivers/soc/imx/imx8m-blk-ctrl.c b/drivers/soc/imx/imx8m-blk-ctrl.c index 399cb85105a18..4f5736e612fb0 100644 --- a/drivers/soc/imx/imx8m-blk-ctrl.c +++ b/drivers/soc/imx/imx8m-blk-ctrl.c @@ -169,7 +169,9 @@ static int imx8m_blk_ctrl_probe(struct platform_device *pdev) { const struct imx8m_blk_ctrl_data *bc_data; struct device *dev = &pdev->dev; + struct platform_device *child; struct imx8m_blk_ctrl *bc; + struct device_node *np; void __iomem *base; int i, ret; @@ -310,6 +312,13 @@ static int imx8m_blk_ctrl_probe(struct platform_device *pdev) dev_set_drvdata(dev, bc); + for_each_child_of_node(dev->of_node, np) { + child = of_platform_device_create(np, NULL, dev); + if (child) + continue; + dev_warn(dev, "failed to create device for %pOF\n", np); + } + return 0; cleanup_provider: