From: Maxime Ripard Date: Thu, 3 Sep 2020 08:01:30 +0000 (+0200) Subject: drm/vc4: hdmi: Deal with multiple debugfs files X-Git-Tag: v5.10.7~1332^2~3^2~167 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=b2405c98260ad5ce08c1b33b82198812ba3e004e;p=platform%2Fkernel%2Flinux-rpi.git drm/vc4: hdmi: Deal with multiple debugfs files The HDMI driver was registering a single debugfs file so far with the name hdmi_regs. Obviously, this is not going to work anymore when 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 Tested-by: Chanwoo Choi Tested-by: Hoegeun Kwon Tested-by: Stefan Wahren Reviewed-by: Dave Stevenson Link: https://patchwork.freedesktop.org/patch/msgid/9505c1eb40b3ef3709277bf9e8af77917b249c32.1599120059.git-series.maxime@cerno.tech --- diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c index f6d18bd..4d0b44a 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi.c +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c @@ -1369,7 +1369,9 @@ static int vc4_hdmi_bind(struct device *dev, struct device *master, void *data) if (ret) goto err_destroy_encoder; - vc4_debugfs_add_file(drm, "hdmi_regs", vc4_hdmi_debugfs_regs, vc4_hdmi); + vc4_debugfs_add_file(drm, variant->debugfs_name, + vc4_hdmi_debugfs_regs, + vc4_hdmi); return 0; @@ -1447,6 +1449,7 @@ 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", .registers = vc4_hdmi_fields, .num_registers = ARRAY_SIZE(vc4_hdmi_fields), diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.h b/drivers/gpu/drm/vc4/vc4_hdmi.h index 0d529db..794216f 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; + /* Filename to expose the registers in debugfs */ + const char *debugfs_name; + /* List of the registers available on that variant */ const struct vc4_hdmi_register *registers;