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drm/amd/display: Fix incorrect DSC instance for MST

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commit 892b41b16f upstream.

[Why] DSC debugfs, such as dp_dsc_clock_en_read,
use aconnector->dc_link to find pipe_ctx for display.
Displays connected to MST hub share the same dc_link.
DSC instance is from pipe_ctx. This causes incorrect
DSC instance for display connected to MST hub.

[How] Add aconnector->sink check to find pipe_ctx.

CC: stable@vger.kernel.org
Reviewed-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Hersen Wu <hersenxs.wu@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Hersen Wu 2024-02-13 14:26:06 -05:00 committed by Greg Kroah-Hartman
parent eb93f6f304
commit a841b00295
1 changed files with 36 additions and 12 deletions
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48
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
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@ -1495,7 +1495,9 @@ static ssize_t dp_dsc_clock_en_read(struct file *f, char __user *buf,
for (i = 0; i < MAX_PIPES; i++) {
pipe_ctx = &aconnector->dc_link->dc->current_state->res_ctx.pipe_ctx[i];
if (pipe_ctx->stream &&
pipe_ctx->stream->link == aconnector->dc_link)
pipe_ctx->stream->link == aconnector->dc_link &&
pipe_ctx->stream->sink &&
pipe_ctx->stream->sink == aconnector->dc_sink)
break;
}
@ -1596,7 +1598,9 @@ static ssize_t dp_dsc_clock_en_write(struct file *f, const char __user *buf,
for (i = 0; i < MAX_PIPES; i++) {
pipe_ctx = &aconnector->dc_link->dc->current_state->res_ctx.pipe_ctx[i];
if (pipe_ctx->stream &&
pipe_ctx->stream->link == aconnector->dc_link)
pipe_ctx->stream->link == aconnector->dc_link &&
pipe_ctx->stream->sink &&
pipe_ctx->stream->sink == aconnector->dc_sink)
break;
}
@ -1681,7 +1685,9 @@ static ssize_t dp_dsc_slice_width_read(struct file *f, char __user *buf,
for (i = 0; i < MAX_PIPES; i++) {
pipe_ctx = &aconnector->dc_link->dc->current_state->res_ctx.pipe_ctx[i];
if (pipe_ctx->stream &&
pipe_ctx->stream->link == aconnector->dc_link)
pipe_ctx->stream->link == aconnector->dc_link &&
pipe_ctx->stream->sink &&
pipe_ctx->stream->sink == aconnector->dc_sink)
break;
}
@ -1780,7 +1786,9 @@ static ssize_t dp_dsc_slice_width_write(struct file *f, const char __user *buf,
for (i = 0; i < MAX_PIPES; i++) {
pipe_ctx = &aconnector->dc_link->dc->current_state->res_ctx.pipe_ctx[i];
if (pipe_ctx->stream &&
pipe_ctx->stream->link == aconnector->dc_link)
pipe_ctx->stream->link == aconnector->dc_link &&
pipe_ctx->stream->sink &&
pipe_ctx->stream->sink == aconnector->dc_sink)
break;
}
@ -1865,7 +1873,9 @@ static ssize_t dp_dsc_slice_height_read(struct file *f, char __user *buf,
for (i = 0; i < MAX_PIPES; i++) {
pipe_ctx = &aconnector->dc_link->dc->current_state->res_ctx.pipe_ctx[i];
if (pipe_ctx->stream &&
pipe_ctx->stream->link == aconnector->dc_link)
pipe_ctx->stream->link == aconnector->dc_link &&
pipe_ctx->stream->sink &&
pipe_ctx->stream->sink == aconnector->dc_sink)
break;
}
@ -1964,7 +1974,9 @@ static ssize_t dp_dsc_slice_height_write(struct file *f, const char __user *buf,
for (i = 0; i < MAX_PIPES; i++) {
pipe_ctx = &aconnector->dc_link->dc->current_state->res_ctx.pipe_ctx[i];
if (pipe_ctx->stream &&
pipe_ctx->stream->link == aconnector->dc_link)
pipe_ctx->stream->link == aconnector->dc_link &&
pipe_ctx->stream->sink &&
pipe_ctx->stream->sink == aconnector->dc_sink)
break;
}
@ -2045,7 +2057,9 @@ static ssize_t dp_dsc_bits_per_pixel_read(struct file *f, char __user *buf,
for (i = 0; i < MAX_PIPES; i++) {
pipe_ctx = &aconnector->dc_link->dc->current_state->res_ctx.pipe_ctx[i];
if (pipe_ctx->stream &&
pipe_ctx->stream->link == aconnector->dc_link)
pipe_ctx->stream->link == aconnector->dc_link &&
pipe_ctx->stream->sink &&
pipe_ctx->stream->sink == aconnector->dc_sink)
break;
}
@ -2141,7 +2155,9 @@ static ssize_t dp_dsc_bits_per_pixel_write(struct file *f, const char __user *bu
for (i = 0; i < MAX_PIPES; i++) {
pipe_ctx = &aconnector->dc_link->dc->current_state->res_ctx.pipe_ctx[i];
if (pipe_ctx->stream &&
pipe_ctx->stream->link == aconnector->dc_link)
pipe_ctx->stream->link == aconnector->dc_link &&
pipe_ctx->stream->sink &&
pipe_ctx->stream->sink == aconnector->dc_sink)
break;
}
@ -2220,7 +2236,9 @@ static ssize_t dp_dsc_pic_width_read(struct file *f, char __user *buf,
for (i = 0; i < MAX_PIPES; i++) {
pipe_ctx = &aconnector->dc_link->dc->current_state->res_ctx.pipe_ctx[i];
if (pipe_ctx->stream &&
pipe_ctx->stream->link == aconnector->dc_link)
pipe_ctx->stream->link == aconnector->dc_link &&
pipe_ctx->stream->sink &&
pipe_ctx->stream->sink == aconnector->dc_sink)
break;
}
@ -2276,7 +2294,9 @@ static ssize_t dp_dsc_pic_height_read(struct file *f, char __user *buf,
for (i = 0; i < MAX_PIPES; i++) {
pipe_ctx = &aconnector->dc_link->dc->current_state->res_ctx.pipe_ctx[i];
if (pipe_ctx->stream &&
pipe_ctx->stream->link == aconnector->dc_link)
pipe_ctx->stream->link == aconnector->dc_link &&
pipe_ctx->stream->sink &&
pipe_ctx->stream->sink == aconnector->dc_sink)
break;
}
@ -2347,7 +2367,9 @@ static ssize_t dp_dsc_chunk_size_read(struct file *f, char __user *buf,
for (i = 0; i < MAX_PIPES; i++) {
pipe_ctx = &aconnector->dc_link->dc->current_state->res_ctx.pipe_ctx[i];
if (pipe_ctx->stream &&
pipe_ctx->stream->link == aconnector->dc_link)
pipe_ctx->stream->link == aconnector->dc_link &&
pipe_ctx->stream->sink &&
pipe_ctx->stream->sink == aconnector->dc_sink)
break;
}
@ -2418,7 +2440,9 @@ static ssize_t dp_dsc_slice_bpg_offset_read(struct file *f, char __user *buf,
for (i = 0; i < MAX_PIPES; i++) {
pipe_ctx = &aconnector->dc_link->dc->current_state->res_ctx.pipe_ctx[i];
if (pipe_ctx->stream &&
pipe_ctx->stream->link == aconnector->dc_link)
pipe_ctx->stream->link == aconnector->dc_link &&
pipe_ctx->stream->sink &&
pipe_ctx->stream->sink == aconnector->dc_sink)
break;
}