From 5eab3aba1ec24db2da6b575a54da33c691818321 Mon Sep 17 00:00:00 2001
From: Maxime Ripard <maxime@cerno.tech>
Date: Thu, 3 Sep 2020 10:01:41 +0200
Subject: drm/vc4: hdmi: Deal with multiple ALSA cards
Git-commit: 9be43a5a6de5e89bbb7fa137a2348735e48d85f0
Patch-mainline: v5.10-rc1
References: jsc#SLE-15318
The HDMI driver was registering a single ALSA card so far with the name
vc4-hdmi.
Obviously, this is not going to work anymore when we will have multiple
HDMI controllers since we will end up trying to register two files with the
same name.
Let's use the variant to avoid that name conflict.
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Tested-by: Chanwoo Choi <cw00.choi@samsung.com>
Tested-by: Hoegeun Kwon <hoegeun.kwon@samsung.com>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Link: https://patchwork.freedesktop.org/patch/msgid/e60a37444e848a384a45707a21d6df8883115f86.1599120059.git-series.maxime@cerno.tech
Signed-off-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/vc4/vc4_hdmi.c | 3 ++-
drivers/gpu/drm/vc4/vc4_hdmi.h | 3 +++
2 files changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
index 67b61d58b14f..40464ae2f937 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -1043,7 +1043,7 @@ static int vc4_hdmi_audio_init(struct vc4_hdmi *vc4_hdmi)
card->dai_link = dai_link;
card->num_links = 1;
- card->name = "vc4-hdmi";
+ card->name = vc4_hdmi->variant->card_name;
card->dev = dev;
card->owner = THIS_MODULE;
@@ -1503,6 +1503,7 @@ static int vc4_hdmi_dev_remove(struct platform_device *pdev)
static const struct vc4_hdmi_variant bcm2835_variant = {
.encoder_type = VC4_ENCODER_TYPE_HDMI0,
.debugfs_name = "hdmi_regs",
+ .card_name = "vc4-hdmi",
.max_pixel_clock = 162000000,
.cec_available = true,
.registers = vc4_hdmi_fields,
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.h b/drivers/gpu/drm/vc4/vc4_hdmi.h
index 4aea5ee8a91d..34138e0dd4a6 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.h
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.h
@@ -30,6 +30,9 @@ struct vc4_hdmi_variant {
/* Encoder Type for that controller */
enum vc4_encoder_type encoder_type;
+ /* ALSA card name */
+ const char *card_name;
+
/* Filename to expose the registers in debugfs */
const char *debugfs_name;
--
2.29.2