diff mbox series

[37/37] drm/bridge/imx/Kconfig: Prevent imx-ldb-helper from appearing in 2 separate modules

Message ID 20230317081718.2650744-38-lee@kernel.org (mailing list archive)
State New, archived
Headers show
Series Rid W=1 warnings from GPU | expand

Commit Message

Lee Jones March 17, 2023, 8:17 a.m. UTC 
Fixes the following W=1 kernel build warning(s):

 scripts/Makefile.build:252: drivers/gpu/drm/bridge/imx/Makefile: imx-ldb-helper.o is added to multiple modules: imx8qm-ldb imx8qxp-ldb

Cc: Liu Ying <victor.liu@nxp.com>
Cc: Andrzej Hajda <andrzej.hajda@intel.com>
Cc: Neil Armstrong <neil.armstrong@linaro.org>
Cc: Robert Foss <rfoss@kernel.org>
Cc: Laurent Pinchart <Laurent.pinchart@ideasonboard.com>
Cc: Jonas Karlman <jonas@kwiboo.se>
Cc: Jernej Skrabec <jernej.skrabec@gmail.com>
Cc: David Airlie <airlied@gmail.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: NXP Linux Team <linux-imx@nxp.com>
Cc: dri-devel@lists.freedesktop.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Lee Jones <lee@kernel.org>
---
 drivers/gpu/drm/bridge/imx/Kconfig          |  7 +++++++
 drivers/gpu/drm/bridge/imx/Makefile         |  7 +++++--
 drivers/gpu/drm/bridge/imx/imx-ldb-helper.c | 13 +++++++++++++
 3 files changed, 25 insertions(+), 2 deletions(-)

Comments

Liu Ying March 17, 2023, 9:42 a.m. UTC | #1 
Hi Lee,

On Fri, 2023-03-17 at 08:17 +0000, Lee Jones wrote:
> Fixes the following W=1 kernel build warning(s):
> 
>  scripts/Makefile.build:252: drivers/gpu/drm/bridge/imx/Makefile: imx-ldb-helper.o is added to multiple modules: imx8qm-ldb imx8qxp-ldb
> 
> Cc: Liu Ying <victor.liu@nxp.com>
> Cc: Andrzej Hajda <andrzej.hajda@intel.com>
> Cc: Neil Armstrong <neil.armstrong@linaro.org>
> Cc: Robert Foss <rfoss@kernel.org>
> Cc: Laurent Pinchart <Laurent.pinchart@ideasonboard.com>
> Cc: Jonas Karlman <jonas@kwiboo.se>
> Cc: Jernej Skrabec <jernej.skrabec@gmail.com>
> Cc: David Airlie <airlied@gmail.com>
> Cc: Daniel Vetter <daniel@ffwll.ch>
> Cc: Shawn Guo <shawnguo@kernel.org>
> Cc: Sascha Hauer <s.hauer@pengutronix.de>
> Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
> Cc: Fabio Estevam <festevam@gmail.com>
> Cc: NXP Linux Team <linux-imx@nxp.com>
> Cc: dri-devel@lists.freedesktop.org
> Cc: linux-arm-kernel@lists.infradead.org
> Signed-off-by: Lee Jones <lee@kernel.org>

Thank you for the patch.

> ---
>  drivers/gpu/drm/bridge/imx/Kconfig          |  7 +++++++
>  drivers/gpu/drm/bridge/imx/Makefile         |  7 +++++--
>  drivers/gpu/drm/bridge/imx/imx-ldb-helper.c | 13 +++++++++++++
>  3 files changed, 25 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/bridge/imx/Kconfig b/drivers/gpu/drm/bridge/imx/Kconfig
> index 608f47f41bcd1..97018dcd078d0 100644
> --- a/drivers/gpu/drm/bridge/imx/Kconfig
> +++ b/drivers/gpu/drm/bridge/imx/Kconfig
> @@ -1,10 +1,16 @@
>  if ARCH_MXC || COMPILE_TEST
>  
> +config DRM_IMX8_LIB

I would limit this to i.MX LVDS Display Bridge(LDB) library, so I
suggest to use DRM_IMX_LDB_LIB.

> +	tristate
> +	help
> +	  Common helper functions used by some of the drivers below.

Considering to use DRM_IMX_LDB_LIB, help message can be a bit more
specific to LDB drivers, like:

Common helper functions used by i.MX LVDS display bridge drivers below.

Regards,
Liu Ying
Lee Jones March 20, 2023, 8:21 a.m. UTC | #2 
On Fri, 17 Mar 2023, Liu Ying wrote:

> Hi Lee,
>
> On Fri, 2023-03-17 at 08:17 +0000, Lee Jones wrote:
> > Fixes the following W=1 kernel build warning(s):
> >
> >  scripts/Makefile.build:252: drivers/gpu/drm/bridge/imx/Makefile: imx-ldb-helper.o is added to multiple modules: imx8qm-ldb imx8qxp-ldb
> >
> > Cc: Liu Ying <victor.liu@nxp.com>
> > Cc: Andrzej Hajda <andrzej.hajda@intel.com>
> > Cc: Neil Armstrong <neil.armstrong@linaro.org>
> > Cc: Robert Foss <rfoss@kernel.org>
> > Cc: Laurent Pinchart <Laurent.pinchart@ideasonboard.com>
> > Cc: Jonas Karlman <jonas@kwiboo.se>
> > Cc: Jernej Skrabec <jernej.skrabec@gmail.com>
> > Cc: David Airlie <airlied@gmail.com>
> > Cc: Daniel Vetter <daniel@ffwll.ch>
> > Cc: Shawn Guo <shawnguo@kernel.org>
> > Cc: Sascha Hauer <s.hauer@pengutronix.de>
> > Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
> > Cc: Fabio Estevam <festevam@gmail.com>
> > Cc: NXP Linux Team <linux-imx@nxp.com>
> > Cc: dri-devel@lists.freedesktop.org
> > Cc: linux-arm-kernel@lists.infradead.org
> > Signed-off-by: Lee Jones <lee@kernel.org>
>
> Thank you for the patch.
>
> > ---
> >  drivers/gpu/drm/bridge/imx/Kconfig          |  7 +++++++
> >  drivers/gpu/drm/bridge/imx/Makefile         |  7 +++++--
> >  drivers/gpu/drm/bridge/imx/imx-ldb-helper.c | 13 +++++++++++++
> >  3 files changed, 25 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/bridge/imx/Kconfig b/drivers/gpu/drm/bridge/imx/Kconfig
> > index 608f47f41bcd1..97018dcd078d0 100644
> > --- a/drivers/gpu/drm/bridge/imx/Kconfig
> > +++ b/drivers/gpu/drm/bridge/imx/Kconfig
> > @@ -1,10 +1,16 @@
> >  if ARCH_MXC || COMPILE_TEST
> >
> > +config DRM_IMX8_LIB
>
> I would limit this to i.MX LVDS Display Bridge(LDB) library, so I
> suggest to use DRM_IMX_LDB_LIB.
>
> > +	tristate
> > +	help
> > +	  Common helper functions used by some of the drivers below.
>
> Considering to use DRM_IMX_LDB_LIB, help message can be a bit more
> specific to LDB drivers, like:
>
> Common helper functions used by i.MX LVDS display bridge drivers below.

Thanks for the help.  Leave it with me.

--
Lee Jones [李琼斯]
diff mbox series

Patch

diff --git a/drivers/gpu/drm/bridge/imx/Kconfig b/drivers/gpu/drm/bridge/imx/Kconfig
index 608f47f41bcd1..97018dcd078d0 100644
--- a/drivers/gpu/drm/bridge/imx/Kconfig
+++ b/drivers/gpu/drm/bridge/imx/Kconfig
@@ -1,10 +1,16 @@ 
 if ARCH_MXC || COMPILE_TEST
 
+config DRM_IMX8_LIB
+	tristate
+	help
+	  Common helper functions used by some of the drivers below.
+
 config DRM_IMX8QM_LDB
 	tristate "Freescale i.MX8QM LVDS display bridge"
 	depends on OF
 	depends on COMMON_CLK
 	select DRM_KMS_HELPER
+	select DRM_IMX8_LIB
 	help
 	  Choose this to enable the internal LVDS Display Bridge(LDB) found in
 	  Freescale i.MX8qm processor.  Official name of LDB is pixel mapper.
@@ -14,6 +20,7 @@  config DRM_IMX8QXP_LDB
 	depends on OF
 	depends on COMMON_CLK
 	select DRM_KMS_HELPER
+	select DRM_IMX8_LIB
 	help
 	  Choose this to enable the internal LVDS Display Bridge(LDB) found in
 	  Freescale i.MX8qxp processor.  Official name of LDB is pixel mapper.
diff --git a/drivers/gpu/drm/bridge/imx/Makefile b/drivers/gpu/drm/bridge/imx/Makefile
index aa90ec8d54336..e1146b0347014 100644
--- a/drivers/gpu/drm/bridge/imx/Makefile
+++ b/drivers/gpu/drm/bridge/imx/Makefile
@@ -1,7 +1,10 @@ 
-imx8qm-ldb-objs := imx-ldb-helper.o imx8qm-ldb-drv.o
+imx-ldb-lib-objs := imx-ldb-helper.o
+obj-$(CONFIG_DRM_IMX8_LIB) += imx-ldb-lib.o
+
+imx8qm-ldb-objs := imx8qm-ldb-drv.o
 obj-$(CONFIG_DRM_IMX8QM_LDB) += imx8qm-ldb.o
 
-imx8qxp-ldb-objs := imx-ldb-helper.o imx8qxp-ldb-drv.o
+imx8qxp-ldb-objs := imx8qxp-ldb-drv.o
 obj-$(CONFIG_DRM_IMX8QXP_LDB) += imx8qxp-ldb.o
 
 obj-$(CONFIG_DRM_IMX8QXP_PIXEL_COMBINER) += imx8qxp-pixel-combiner.o
diff --git a/drivers/gpu/drm/bridge/imx/imx-ldb-helper.c b/drivers/gpu/drm/bridge/imx/imx-ldb-helper.c
index 7338b84bc83d2..4cd570947b093 100644
--- a/drivers/gpu/drm/bridge/imx/imx-ldb-helper.c
+++ b/drivers/gpu/drm/bridge/imx/imx-ldb-helper.c
@@ -19,12 +19,14 @@  bool ldb_channel_is_single_link(struct ldb_channel *ldb_ch)
 {
 	return ldb_ch->link_type == LDB_CH_SINGLE_LINK;
 }
+EXPORT_SYMBOL_GPL(ldb_channel_is_single_link);
 
 bool ldb_channel_is_split_link(struct ldb_channel *ldb_ch)
 {
 	return ldb_ch->link_type == LDB_CH_DUAL_LINK_EVEN_ODD_PIXELS ||
 	       ldb_ch->link_type == LDB_CH_DUAL_LINK_ODD_EVEN_PIXELS;
 }
+EXPORT_SYMBOL_GPL(ldb_channel_is_split_link);
 
 int ldb_bridge_atomic_check_helper(struct drm_bridge *bridge,
 				   struct drm_bridge_state *bridge_state,
@@ -38,6 +40,7 @@  int ldb_bridge_atomic_check_helper(struct drm_bridge *bridge,
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(ldb_bridge_atomic_check_helper);
 
 void ldb_bridge_mode_set_helper(struct drm_bridge *bridge,
 				const struct drm_display_mode *mode,
@@ -69,6 +72,7 @@  void ldb_bridge_mode_set_helper(struct drm_bridge *bridge,
 		break;
 	}
 }
+EXPORT_SYMBOL_GPL(ldb_bridge_mode_set_helper);
 
 void ldb_bridge_enable_helper(struct drm_bridge *bridge)
 {
@@ -81,6 +85,7 @@  void ldb_bridge_enable_helper(struct drm_bridge *bridge)
 	 */
 	regmap_write(ldb->regmap, ldb->ctrl_reg, ldb->ldb_ctrl);
 }
+EXPORT_SYMBOL_GPL(ldb_bridge_enable_helper);
 
 void ldb_bridge_disable_helper(struct drm_bridge *bridge)
 {
@@ -95,6 +100,7 @@  void ldb_bridge_disable_helper(struct drm_bridge *bridge)
 
 	regmap_write(ldb->regmap, ldb->ctrl_reg, ldb->ldb_ctrl);
 }
+EXPORT_SYMBOL_GPL(ldb_bridge_disable_helper);
 
 int ldb_bridge_attach_helper(struct drm_bridge *bridge,
 			     enum drm_bridge_attach_flags flags)
@@ -117,6 +123,7 @@  int ldb_bridge_attach_helper(struct drm_bridge *bridge,
 				ldb_ch->next_bridge, bridge,
 				DRM_BRIDGE_ATTACH_NO_CONNECTOR);
 }
+EXPORT_SYMBOL_GPL(ldb_bridge_attach_helper);
 
 int ldb_init_helper(struct ldb *ldb)
 {
@@ -157,6 +164,7 @@  int ldb_init_helper(struct ldb *ldb)
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(ldb_init_helper);
 
 int ldb_find_next_bridge_helper(struct ldb *ldb)
 {
@@ -184,6 +192,7 @@  int ldb_find_next_bridge_helper(struct ldb *ldb)
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(ldb_find_next_bridge_helper);
 
 void ldb_add_bridge_helper(struct ldb *ldb,
 			   const struct drm_bridge_funcs *bridge_funcs)
@@ -204,6 +213,7 @@  void ldb_add_bridge_helper(struct ldb *ldb,
 		drm_bridge_add(&ldb_ch->bridge);
 	}
 }
+EXPORT_SYMBOL_GPL(ldb_add_bridge_helper);
 
 void ldb_remove_bridge_helper(struct ldb *ldb)
 {
@@ -219,3 +229,6 @@  void ldb_remove_bridge_helper(struct ldb *ldb)
 		drm_bridge_remove(&ldb_ch->bridge);
 	}
 }
+EXPORT_SYMBOL_GPL(ldb_remove_bridge_helper);
+
+MODULE_LICENSE("GPL v2");