[PATCH 02/37] drm/xlnx/zynqmp_disp: Use correct kerneldoc formatting in zynqmp_disp

[PATCH 02/37] drm/xlnx/zynqmp_disp: Use correct kerneldoc formatting in zynqmp_disp

[Lee Jones]

Fixes the following W=1 kernel build warning(s):

 drivers/gpu/drm/xlnx/zynqmp_disp.c:151: warning: Function parameter or member 'blend' not described in 'zynqmp_disp'
 drivers/gpu/drm/xlnx/zynqmp_disp.c:151: warning: Function parameter or member 'avbuf' not described in 'zynqmp_disp'
 drivers/gpu/drm/xlnx/zynqmp_disp.c:151: warning: Function parameter or member 'audio' not described in 'zynqmp_disp'

Cc: Hyun Kwon <hyun.kwon@xilinx.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: David Airlie <airlied@gmail.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Michal Simek <michal.simek@xilinx.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/xlnx/zynqmp_disp.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/xlnx/zynqmp_disp.c b/drivers/gpu/drm/xlnx/zynqmp_disp.c
index 3b87eebddc979..63358f4898625 100644
--- a/drivers/gpu/drm/xlnx/zynqmp_disp.c
+++ b/drivers/gpu/drm/xlnx/zynqmp_disp.c
@@ -128,9 +128,9 @@ struct zynqmp_disp_layer {
  * struct zynqmp_disp - Display controller
  * @dev: Device structure
  * @dpsub: Display subsystem
- * @blend.base: Register I/O base address for the blender
- * @avbuf.base: Register I/O base address for the audio/video buffer manager
- * @audio.base: Registers I/O base address for the audio mixer
+ * @blend: .base: Register I/O base address for the blender
+ * @avbuf: .base: Register I/O base address for the audio/video buffer manager
+ * @audio: .base: Registers I/O base address for the audio mixer
  * @layers: Layers (planes)
  */
 struct zynqmp_disp {
-- 
2.40.0.rc1.284.g88254d51c5-goog


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[PATCH 04/37] drm/xlnx/zynqmp_dp: Fix function name zynqmp_dp_link_train() -> zynqmp_dp_train()

[Lee Jones]

Fixes the following W=1 kernel build warning(s):

 drivers/gpu/drm/xlnx/zynqmp_dp.c:793: warning: expecting prototype for zynqmp_dp_link_train(). Prototype was for zynqmp_dp_train() instead

Cc: Hyun Kwon <hyun.kwon@xilinx.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: David Airlie <airlied@gmail.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: Philipp Zabel <p.zabel@pengutronix.de>
Cc: dri-devel@lists.freedesktop.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Lee Jones <lee@kernel.org>
---
 drivers/gpu/drm/xlnx/zynqmp_dp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/xlnx/zynqmp_dp.c b/drivers/gpu/drm/xlnx/zynqmp_dp.c
index 0a7b466446fb6..a0606fab0e22c 100644
--- a/drivers/gpu/drm/xlnx/zynqmp_dp.c
+++ b/drivers/gpu/drm/xlnx/zynqmp_dp.c
@@ -784,7 +784,7 @@ static int zynqmp_dp_link_train_ce(struct zynqmp_dp *dp)
 }
 
 /**
- * zynqmp_dp_link_train - Train the link
+ * zynqmp_dp_train - Train the link
  * @dp: DisplayPort IP core structure
  *
  * Return: 0 if all trains are done successfully, or corresponding error code.
-- 
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[PATCH 07/37] drm/mediatek/mtk_disp_aal: Remove half completed incorrect struct header

[Lee Jones]

Fixes the following W=1 kernel build warning(s):

 drivers/gpu/drm/mediatek/mtk_disp_aal.c:39: warning: Function parameter or member 'clk' not described in 'mtk_disp_aal'
 drivers/gpu/drm/mediatek/mtk_disp_aal.c:39: warning: Function parameter or member 'regs' not described in 'mtk_disp_aal'
 drivers/gpu/drm/mediatek/mtk_disp_aal.c:39: warning: Function parameter or member 'cmdq_reg' not described in 'mtk_disp_aal'
 drivers/gpu/drm/mediatek/mtk_disp_aal.c:39: warning: Function parameter or member 'data' not described in 'mtk_disp_aal'

Cc: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Cc: Philipp Zabel <p.zabel@pengutronix.de>
Cc: David Airlie <airlied@gmail.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Cc: dri-devel@lists.freedesktop.org
Cc: linux-mediatek@lists.infradead.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Lee Jones <lee@kernel.org>
---
 drivers/gpu/drm/mediatek/mtk_disp_aal.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_disp_aal.c b/drivers/gpu/drm/mediatek/mtk_disp_aal.c
index 434e8a9ce8ab7..d4e831c6f03cf 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_aal.c
+++ b/drivers/gpu/drm/mediatek/mtk_disp_aal.c
@@ -26,11 +26,6 @@ struct mtk_disp_aal_data {
 	bool has_gamma;
 };
 
-/**
- * struct mtk_disp_aal - DISP_AAL driver structure
- * @ddp_comp - structure containing type enum and hardware resources
- * @crtc - associated crtc to report irq events to
- */
 struct mtk_disp_aal {
 	struct clk *clk;
 	void __iomem *regs;
-- 
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[PATCH 08/37] drm/mediatek/mtk_disp_ccorr: Remove half completed incorrect struct header

[Lee Jones]

Fixes the following W=1 kernel build warning(s):

 drivers/gpu/drm/mediatek/mtk_disp_ccorr.c:47: warning: Function parameter or member 'clk' not described in 'mtk_disp_ccorr'
 drivers/gpu/drm/mediatek/mtk_disp_ccorr.c:47: warning: Function parameter or member 'regs' not described in 'mtk_disp_ccorr'
 drivers/gpu/drm/mediatek/mtk_disp_ccorr.c:47: warning: Function parameter or member 'cmdq_reg' not described in 'mtk_disp_ccorr'
 drivers/gpu/drm/mediatek/mtk_disp_ccorr.c:47: warning: Function parameter or member 'data' not described in 'mtk_disp_ccorr'

Cc: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Cc: Philipp Zabel <p.zabel@pengutronix.de>
Cc: David Airlie <airlied@gmail.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Cc: dri-devel@lists.freedesktop.org
Cc: linux-mediatek@lists.infradead.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Lee Jones <lee@kernel.org>
---
 drivers/gpu/drm/mediatek/mtk_disp_ccorr.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ccorr.c b/drivers/gpu/drm/mediatek/mtk_disp_ccorr.c
index 1773379b24398..720f3c7ef7b4f 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_ccorr.c
+++ b/drivers/gpu/drm/mediatek/mtk_disp_ccorr.c
@@ -34,11 +34,6 @@ struct mtk_disp_ccorr_data {
 	u32 matrix_bits;
 };
 
-/**
- * struct mtk_disp_ccorr - DISP_CCORR driver structure
- * @ddp_comp - structure containing type enum and hardware resources
- * @crtc - associated crtc to report irq events to
- */
 struct mtk_disp_ccorr {
 	struct clk *clk;
 	void __iomem *regs;
-- 
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[PATCH 37/37] drm/bridge/imx/Kconfig: Prevent imx-ldb-helper from appearing in 2 separate modules

[Lee Jones]

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(-)

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");
-- 
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Re: [PATCH 07/37] drm/mediatek/mtk_disp_aal: Remove half completed incorrect struct header

[AngeloGioacchino Del Regno]

Il 17/03/23 09:16, Lee Jones ha scritto:
> Fixes the following W=1 kernel build warning(s):
> 
>   drivers/gpu/drm/mediatek/mtk_disp_aal.c:39: warning: Function parameter or member 'clk' not described in 'mtk_disp_aal'
>   drivers/gpu/drm/mediatek/mtk_disp_aal.c:39: warning: Function parameter or member 'regs' not described in 'mtk_disp_aal'
>   drivers/gpu/drm/mediatek/mtk_disp_aal.c:39: warning: Function parameter or member 'cmdq_reg' not described in 'mtk_disp_aal'
>   drivers/gpu/drm/mediatek/mtk_disp_aal.c:39: warning: Function parameter or member 'data' not described in 'mtk_disp_aal'
> 
> Cc: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> Cc: Philipp Zabel <p.zabel@pengutronix.de>
> Cc: David Airlie <airlied@gmail.com>
> Cc: Daniel Vetter <daniel@ffwll.ch>
> Cc: Matthias Brugger <matthias.bgg@gmail.com>
> Cc: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
> Cc: dri-devel@lists.freedesktop.org
> Cc: linux-mediatek@lists.infradead.org
> Cc: linux-arm-kernel@lists.infradead.org
> Signed-off-by: Lee Jones <lee@kernel.org>

I'd add the missing documentation instead.

Please give some time, either me or someone else will do that ASAP.

Thanks,
Angelo


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

[Liu Ying]

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


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Re: [PATCH 04/37] drm/xlnx/zynqmp_dp: Fix function name zynqmp_dp_link_train() -> zynqmp_dp_train()

[Laurent Pinchart]

Hi Lee,

Thank you for the patch.

On Fri, Mar 17, 2023 at 08:16:45AM +0000, Lee Jones wrote:
> Fixes the following W=1 kernel build warning(s):
> 
>  drivers/gpu/drm/xlnx/zynqmp_dp.c:793: warning: expecting prototype for zynqmp_dp_link_train(). Prototype was for zynqmp_dp_train() instead
> 
> Cc: Hyun Kwon <hyun.kwon@xilinx.com>
> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> Cc: David Airlie <airlied@gmail.com>
> Cc: Daniel Vetter <daniel@ffwll.ch>
> Cc: Michal Simek <michal.simek@xilinx.com>
> Cc: Philipp Zabel <p.zabel@pengutronix.de>
> Cc: dri-devel@lists.freedesktop.org
> Cc: linux-arm-kernel@lists.infradead.org
> Signed-off-by: Lee Jones <lee@kernel.org>

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

> ---
>  drivers/gpu/drm/xlnx/zynqmp_dp.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/xlnx/zynqmp_dp.c b/drivers/gpu/drm/xlnx/zynqmp_dp.c
> index 0a7b466446fb6..a0606fab0e22c 100644
> --- a/drivers/gpu/drm/xlnx/zynqmp_dp.c
> +++ b/drivers/gpu/drm/xlnx/zynqmp_dp.c
> @@ -784,7 +784,7 @@ static int zynqmp_dp_link_train_ce(struct zynqmp_dp *dp)
>  }
>  
>  /**
> - * zynqmp_dp_link_train - Train the link
> + * zynqmp_dp_train - Train the link
>   * @dp: DisplayPort IP core structure
>   *
>   * Return: 0 if all trains are done successfully, or corresponding error code.

-- 
Regards,

Laurent Pinchart

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Re: [PATCH 02/37] drm/xlnx/zynqmp_disp: Use correct kerneldoc formatting in zynqmp_disp

[Laurent Pinchart]

Hi Lee,

Thank you for the patch.

On Fri, Mar 17, 2023 at 08:16:43AM +0000, Lee Jones wrote:
> Fixes the following W=1 kernel build warning(s):
> 
>  drivers/gpu/drm/xlnx/zynqmp_disp.c:151: warning: Function parameter or member 'blend' not described in 'zynqmp_disp'
>  drivers/gpu/drm/xlnx/zynqmp_disp.c:151: warning: Function parameter or member 'avbuf' not described in 'zynqmp_disp'
>  drivers/gpu/drm/xlnx/zynqmp_disp.c:151: warning: Function parameter or member 'audio' not described in 'zynqmp_disp'
> 
> Cc: Hyun Kwon <hyun.kwon@xilinx.com>
> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> Cc: David Airlie <airlied@gmail.com>
> Cc: Daniel Vetter <daniel@ffwll.ch>
> Cc: Michal Simek <michal.simek@xilinx.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/xlnx/zynqmp_disp.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/gpu/drm/xlnx/zynqmp_disp.c b/drivers/gpu/drm/xlnx/zynqmp_disp.c
> index 3b87eebddc979..63358f4898625 100644
> --- a/drivers/gpu/drm/xlnx/zynqmp_disp.c
> +++ b/drivers/gpu/drm/xlnx/zynqmp_disp.c
> @@ -128,9 +128,9 @@ struct zynqmp_disp_layer {
>   * struct zynqmp_disp - Display controller
>   * @dev: Device structure
>   * @dpsub: Display subsystem
> - * @blend.base: Register I/O base address for the blender
> - * @avbuf.base: Register I/O base address for the audio/video buffer manager
> - * @audio.base: Registers I/O base address for the audio mixer
> + * @blend: .base: Register I/O base address for the blender
> + * @avbuf: .base: Register I/O base address for the audio/video buffer manager
> + * @audio: .base: Registers I/O base address for the audio mixer

This is a hack, it won't work properly if the nested structures get
extended with more fields.

Is there a correct kerneldoc syntax for this code construct ?

>   * @layers: Layers (planes)
>   */
>  struct zynqmp_disp {

-- 
Regards,

Laurent Pinchart

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Re: [PATCH 02/37] drm/xlnx/zynqmp_disp: Use correct kerneldoc formatting in zynqmp_disp

[Lee Jones]

On Sun, 19 Mar 2023, Laurent Pinchart wrote:

> Hi Lee,
>
> Thank you for the patch.
>
> On Fri, Mar 17, 2023 at 08:16:43AM +0000, Lee Jones wrote:
> > Fixes the following W=1 kernel build warning(s):
> >
> >  drivers/gpu/drm/xlnx/zynqmp_disp.c:151: warning: Function parameter or member 'blend' not described in 'zynqmp_disp'
> >  drivers/gpu/drm/xlnx/zynqmp_disp.c:151: warning: Function parameter or member 'avbuf' not described in 'zynqmp_disp'
> >  drivers/gpu/drm/xlnx/zynqmp_disp.c:151: warning: Function parameter or member 'audio' not described in 'zynqmp_disp'
> >
> > Cc: Hyun Kwon <hyun.kwon@xilinx.com>
> > Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> > Cc: David Airlie <airlied@gmail.com>
> > Cc: Daniel Vetter <daniel@ffwll.ch>
> > Cc: Michal Simek <michal.simek@xilinx.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/xlnx/zynqmp_disp.c | 6 +++---
> >  1 file changed, 3 insertions(+), 3 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/xlnx/zynqmp_disp.c b/drivers/gpu/drm/xlnx/zynqmp_disp.c
> > index 3b87eebddc979..63358f4898625 100644
> > --- a/drivers/gpu/drm/xlnx/zynqmp_disp.c
> > +++ b/drivers/gpu/drm/xlnx/zynqmp_disp.c
> > @@ -128,9 +128,9 @@ struct zynqmp_disp_layer {
> >   * struct zynqmp_disp - Display controller
> >   * @dev: Device structure
> >   * @dpsub: Display subsystem
> > - * @blend.base: Register I/O base address for the blender
> > - * @avbuf.base: Register I/O base address for the audio/video buffer manager
> > - * @audio.base: Registers I/O base address for the audio mixer
> > + * @blend: .base: Register I/O base address for the blender
> > + * @avbuf: .base: Register I/O base address for the audio/video buffer manager
> > + * @audio: .base: Registers I/O base address for the audio mixer
>
> This is a hack, it won't work properly if the nested structures get
> extended with more fields.

The original doc is a hack, for it is not recognised kerneldoc format.  :)

> Is there a correct kerneldoc syntax for this code construct ?

Not that I'm aware of.

Unless it's been added since my last round of this stuff.

> >   * @layers: Layers (planes)
> >   */
> >  struct zynqmp_disp {
>
> --
> Regards,
>
> Laurent Pinchart

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

[Lee Jones]

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.

--
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Re: [PATCH 07/37] drm/mediatek/mtk_disp_aal: Remove half completed incorrect struct header

[Lee Jones]

On Fri, 17 Mar 2023, AngeloGioacchino Del Regno wrote:

> Il 17/03/23 09:16, Lee Jones ha scritto:
> > Fixes the following W=1 kernel build warning(s):
> >
> >   drivers/gpu/drm/mediatek/mtk_disp_aal.c:39: warning: Function parameter or member 'clk' not described in 'mtk_disp_aal'
> >   drivers/gpu/drm/mediatek/mtk_disp_aal.c:39: warning: Function parameter or member 'regs' not described in 'mtk_disp_aal'
> >   drivers/gpu/drm/mediatek/mtk_disp_aal.c:39: warning: Function parameter or member 'cmdq_reg' not described in 'mtk_disp_aal'
> >   drivers/gpu/drm/mediatek/mtk_disp_aal.c:39: warning: Function parameter or member 'data' not described in 'mtk_disp_aal'
> >
> > Cc: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> > Cc: Philipp Zabel <p.zabel@pengutronix.de>
> > Cc: David Airlie <airlied@gmail.com>
> > Cc: Daniel Vetter <daniel@ffwll.ch>
> > Cc: Matthias Brugger <matthias.bgg@gmail.com>
> > Cc: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
> > Cc: dri-devel@lists.freedesktop.org
> > Cc: linux-mediatek@lists.infradead.org
> > Cc: linux-arm-kernel@lists.infradead.org
> > Signed-off-by: Lee Jones <lee@kernel.org>
>
> I'd add the missing documentation instead.
>
> Please give some time, either me or someone else will do that ASAP.

Even better.  Thank you.

--
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Re: [PATCH 02/37] drm/xlnx/zynqmp_disp: Use correct kerneldoc formatting in zynqmp_disp

[Laurent Pinchart]

Hi Lee,

(CC'ing Jon and Mauro)

On Mon, Mar 20, 2023 at 08:17:00AM +0000, Lee Jones wrote:
> On Sun, 19 Mar 2023, Laurent Pinchart wrote:
> > Thank you for the patch.
> >
> > On Fri, Mar 17, 2023 at 08:16:43AM +0000, Lee Jones wrote:
> > > Fixes the following W=1 kernel build warning(s):
> > >
> > >  drivers/gpu/drm/xlnx/zynqmp_disp.c:151: warning: Function parameter or member 'blend' not described in 'zynqmp_disp'
> > >  drivers/gpu/drm/xlnx/zynqmp_disp.c:151: warning: Function parameter or member 'avbuf' not described in 'zynqmp_disp'
> > >  drivers/gpu/drm/xlnx/zynqmp_disp.c:151: warning: Function parameter or member 'audio' not described in 'zynqmp_disp'
> > >
> > > Cc: Hyun Kwon <hyun.kwon@xilinx.com>
> > > Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> > > Cc: David Airlie <airlied@gmail.com>
> > > Cc: Daniel Vetter <daniel@ffwll.ch>
> > > Cc: Michal Simek <michal.simek@xilinx.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/xlnx/zynqmp_disp.c | 6 +++---
> > >  1 file changed, 3 insertions(+), 3 deletions(-)
> > >
> > > diff --git a/drivers/gpu/drm/xlnx/zynqmp_disp.c b/drivers/gpu/drm/xlnx/zynqmp_disp.c
> > > index 3b87eebddc979..63358f4898625 100644
> > > --- a/drivers/gpu/drm/xlnx/zynqmp_disp.c
> > > +++ b/drivers/gpu/drm/xlnx/zynqmp_disp.c
> > > @@ -128,9 +128,9 @@ struct zynqmp_disp_layer {
> > >   * struct zynqmp_disp - Display controller
> > >   * @dev: Device structure
> > >   * @dpsub: Display subsystem
> > > - * @blend.base: Register I/O base address for the blender
> > > - * @avbuf.base: Register I/O base address for the audio/video buffer manager
> > > - * @audio.base: Registers I/O base address for the audio mixer
> > > + * @blend: .base: Register I/O base address for the blender
> > > + * @avbuf: .base: Register I/O base address for the audio/video buffer manager
> > > + * @audio: .base: Registers I/O base address for the audio mixer
> >
> > This is a hack, it won't work properly if the nested structures get
> > extended with more fields.
> 
> The original doc is a hack, for it is not recognised kerneldoc format.  :)

I'll claim it's a bug, not a hack :-D

> > Is there a correct kerneldoc syntax for this code construct ?
> 
> Not that I'm aware of.
> 
> Unless it's been added since my last round of this stuff.

I haven't seen anything either. I tried moving the documentation inline,
and the scripts/kernel-doc script ignores the comment blocks for the
inner fields.

Mauro, Jon, is this a known issue ? If so, are there plans to fix it ?
What's the recommended way to proceed here ?

> > >   * @layers: Layers (planes)
> > >   */
> > >  struct zynqmp_disp {

-- 
Regards,

Laurent Pinchart

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Re: [PATCH 02/37] drm/xlnx/zynqmp_disp: Use correct kerneldoc formatting in zynqmp_disp

[Laurent Pinchart]

Jon, Mauro, would you have any feedback on this ?
On Tue, Mar 21, 2023 at 01:15:51AM +0200, Laurent Pinchart wrote:
> Hi Lee,
> 
> (CC'ing Jon and Mauro)
> 
> On Mon, Mar 20, 2023 at 08:17:00AM +0000, Lee Jones wrote:
> > On Sun, 19 Mar 2023, Laurent Pinchart wrote:
> > > Thank you for the patch.
> > >
> > > On Fri, Mar 17, 2023 at 08:16:43AM +0000, Lee Jones wrote:
> > > > Fixes the following W=1 kernel build warning(s):
> > > >
> > > >  drivers/gpu/drm/xlnx/zynqmp_disp.c:151: warning: Function parameter or member 'blend' not described in 'zynqmp_disp'
> > > >  drivers/gpu/drm/xlnx/zynqmp_disp.c:151: warning: Function parameter or member 'avbuf' not described in 'zynqmp_disp'
> > > >  drivers/gpu/drm/xlnx/zynqmp_disp.c:151: warning: Function parameter or member 'audio' not described in 'zynqmp_disp'
> > > >
> > > > Cc: Hyun Kwon <hyun.kwon@xilinx.com>
> > > > Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> > > > Cc: David Airlie <airlied@gmail.com>
> > > > Cc: Daniel Vetter <daniel@ffwll.ch>
> > > > Cc: Michal Simek <michal.simek@xilinx.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/xlnx/zynqmp_disp.c | 6 +++---
> > > >  1 file changed, 3 insertions(+), 3 deletions(-)
> > > >
> > > > diff --git a/drivers/gpu/drm/xlnx/zynqmp_disp.c b/drivers/gpu/drm/xlnx/zynqmp_disp.c
> > > > index 3b87eebddc979..63358f4898625 100644
> > > > --- a/drivers/gpu/drm/xlnx/zynqmp_disp.c
> > > > +++ b/drivers/gpu/drm/xlnx/zynqmp_disp.c
> > > > @@ -128,9 +128,9 @@ struct zynqmp_disp_layer {
> > > >   * struct zynqmp_disp - Display controller
> > > >   * @dev: Device structure
> > > >   * @dpsub: Display subsystem
> > > > - * @blend.base: Register I/O base address for the blender
> > > > - * @avbuf.base: Register I/O base address for the audio/video buffer manager
> > > > - * @audio.base: Registers I/O base address for the audio mixer
> > > > + * @blend: .base: Register I/O base address for the blender
> > > > + * @avbuf: .base: Register I/O base address for the audio/video buffer manager
> > > > + * @audio: .base: Registers I/O base address for the audio mixer
> > >
> > > This is a hack, it won't work properly if the nested structures get
> > > extended with more fields.
> > 
> > The original doc is a hack, for it is not recognised kerneldoc format.  :)
> 
> I'll claim it's a bug, not a hack :-D
> 
> > > Is there a correct kerneldoc syntax for this code construct ?
> > 
> > Not that I'm aware of.
> > 
> > Unless it's been added since my last round of this stuff.
> 
> I haven't seen anything either. I tried moving the documentation inline,
> and the scripts/kernel-doc script ignores the comment blocks for the
> inner fields.
> 
> Mauro, Jon, is this a known issue ? If so, are there plans to fix it ?
> What's the recommended way to proceed here ?
> 
> > > >   * @layers: Layers (planes)
> > > >   */
> > > >  struct zynqmp_disp {

-- 
Regards,

Laurent Pinchart

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Re: [PATCH 02/37] drm/xlnx/zynqmp_disp: Use correct kerneldoc formatting in zynqmp_disp

[Jonathan Corbet]

Laurent Pinchart <laurent.pinchart@ideasonboard.com> writes:

> I haven't seen anything either. I tried moving the documentation inline,
> and the scripts/kernel-doc script ignores the comment blocks for the
> inner fields.
>
> Mauro, Jon, is this a known issue ? If so, are there plans to fix it ?
> What's the recommended way to proceed here ?

As far as I can recall, nobody has ever complained about problems with
nested structure definitions like that; kernel-doc certainly isn't set
up to handle such a thing.  It could certainly be added, but it would
require somebody diving into that delightful code to do that work.  I
can't promise to be able to do that in the near future.

Sorry,

jon

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