linux-kernel - [PATCH RFC v2 10/18] drm/vkms: Introduce config for encoder name

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Message-Id: <20241122-google-remove-crtc-index-from-parameter-v2-10-81540742535a@bootlin.com>
Date: Fri, 22 Nov 2024 18:20:14 +0100
From: Louis Chauvet <louis.chauvet@...tlin.com>
To: Maíra Canal <mairacanal@...eup.net>, 
 Haneen Mohammed <hamohammed.sa@...il.com>, Simona Vetter <simona@...ll.ch>, 
 Melissa Wen <melissa.srw@...il.com>, 
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, 
 David Airlie <airlied@...il.com>
Cc: arthurgrillo@...eup.net, jeremie.dautheribes@...tlin.com, 
 miquel.raynal@...tlin.com, thomas.petazzoni@...tlin.com, 
 seanpaul@...gle.com, nicolejadeyee@...gle.com, linux-kernel@...r.kernel.org, 
 dri-devel@...ts.freedesktop.org, Louis Chauvet <louis.chauvet@...tlin.com>
Subject: [PATCH RFC v2 10/18] drm/vkms: Introduce config for encoder name

As an encoder will be a directory in ConfigFS, add the configuration for
encoder name so we will be able to reflect the configfs directory name in
the drm name.

Signed-off-by: Louis Chauvet <louis.chauvet@...tlin.com>
---
 drivers/gpu/drm/vkms/vkms_config.c | 6 ++++++
 drivers/gpu/drm/vkms/vkms_config.h | 2 ++
 drivers/gpu/drm/vkms/vkms_output.c | 2 +-
 3 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/vkms/vkms_config.c b/drivers/gpu/drm/vkms/vkms_config.c
index e44ed904cefb97b8b6ab8fc27623e315397e0106..a2539fb56b602569b75748fdf9c4784f104b0bff 100644
--- a/drivers/gpu/drm/vkms/vkms_config.c
+++ b/drivers/gpu/drm/vkms/vkms_config.c
@@ -41,6 +41,10 @@ struct vkms_config *vkms_config_alloc_default(bool enable_writeback, bool enable
 	encoder = vkms_config_create_encoder(vkms_config);
 	if (!encoder)
 		goto err_alloc;
+	encoder->name = kzalloc(sizeof("Main Encoder"), GFP_KERNEL);
+	if (!encoder->name)
+		goto err_alloc;
+	sprintf(encoder->name, "Main Encoder");
 
 	if (vkms_config_encoder_attach_crtc(encoder, crtc))
 		goto err_alloc;
@@ -238,6 +242,7 @@ void vkms_config_delete_encoder(struct vkms_config_encoder *vkms_config_encoder,
 		}
 	}
 
+	kfree(vkms_config_encoder->name);
 	kfree(vkms_config_encoder);
 }
 
@@ -403,6 +408,7 @@ static int vkms_config_show(struct seq_file *m, void *data)
 
 	list_for_each_entry(config_encoder, &vkmsdev->config->encoders, link) {
 		seq_puts(m, "encoder:\n");
+		seq_printf(m, "\tname: %s\n", config_encoder->name);
 	}
 
 	list_for_each_entry(config_crtc, &vkmsdev->config->crtcs, link) {
diff --git a/drivers/gpu/drm/vkms/vkms_config.h b/drivers/gpu/drm/vkms/vkms_config.h
index 8f247fc09373fb2c8145e83be05c6afec1ffac1c..4223edd94ec270915dd658c0b5efd489554d33a5 100644
--- a/drivers/gpu/drm/vkms/vkms_config.h
+++ b/drivers/gpu/drm/vkms/vkms_config.h
@@ -50,6 +50,7 @@ struct vkms_config_crtc {
  * struct vkms_config_encoder
  *
  * @link: Link to the others encoders
+ * @name: Name of the encoder
  * @possible_crtcs: List of CRTC that can be used with this encoder
  * @encoder: Internal usage. This pointer should never be considered as valid. It can be used to
  *         store a temporary reference to a vkms encoder during device creation. This pointer is
@@ -58,6 +59,7 @@ struct vkms_config_crtc {
 struct vkms_config_encoder {
 	struct list_head link;
 
+	char *name;
 	struct xarray possible_crtcs;
 
 	/* Internal usage */
diff --git a/drivers/gpu/drm/vkms/vkms_output.c b/drivers/gpu/drm/vkms/vkms_output.c
index 03498a20d78dd8a66f9fc66b360c5ea57fc48d88..6277ad72fdd476d1eff52ad037389bdb1a254f5e 100644
--- a/drivers/gpu/drm/vkms/vkms_output.c
+++ b/drivers/gpu/drm/vkms/vkms_output.c
@@ -92,7 +92,7 @@ int vkms_output_init(struct vkms_device *vkmsdev)
 		if (!config_encoder->encoder)
 			return -ENOMEM;
 		ret = drmm_encoder_init(dev, config_encoder->encoder, NULL,
-					DRM_MODE_ENCODER_VIRTUAL, NULL);
+					DRM_MODE_ENCODER_VIRTUAL, config_encoder->name);
 		if (ret) {
 			DRM_ERROR("Failed to init encoder\n");
 			return ret;

-- 
2.47.0