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Message-Id: <20240726-amdgpu-edid-bios-v2-1-8a0326654253@weissschuh.net>
Date: Fri, 26 Jul 2024 15:40:15 +0200
From: Thomas Weißschuh <linux@...ssschuh.net>
To: Alex Deucher <alexander.deucher@....com>,
Christian König <christian.koenig@....com>,
David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>,
Xinhui Pan <Xinhui.Pan@....com>
Cc: amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
linux-kernel@...r.kernel.org,
Thomas Weißschuh <linux@...ssschuh.net>
Subject: [PATCH v2 1/2] drm/amdgpu: convert bios_hardcoded_edid to drm_edid
Instead of manually passing around 'struct edid *' and its size,
use 'struct drm_edid', which encapsulates a validated combination of
both.
As the drm_edid_ can handle NULL gracefully, the explicit checks can be
dropped.
Also save a few characters by transforming '&array[0]' to the equivalent
'array' and using 'max_t(int, ...)' instead of manual casts.
Signed-off-by: Thomas Weißschuh <linux@...ssschuh.net>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c | 6 +-----
drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h | 4 ++--
drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.c | 2 +-
drivers/gpu/drm/amd/amdgpu/atombios_encoders.c | 17 ++++++-----------
drivers/gpu/drm/amd/amdgpu/dce_v10_0.c | 2 +-
drivers/gpu/drm/amd/amdgpu/dce_v11_0.c | 2 +-
drivers/gpu/drm/amd/amdgpu/dce_v6_0.c | 2 +-
drivers/gpu/drm/amd/amdgpu/dce_v8_0.c | 2 +-
8 files changed, 14 insertions(+), 23 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
index bd0fbdc5f55d..344e0a9ee08a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
@@ -249,11 +249,7 @@ amdgpu_connector_find_encoder(struct drm_connector *connector,
static struct edid *
amdgpu_connector_get_hardcoded_edid(struct amdgpu_device *adev)
{
- if (adev->mode_info.bios_hardcoded_edid) {
- return kmemdup((unsigned char *)adev->mode_info.bios_hardcoded_edid,
- adev->mode_info.bios_hardcoded_edid_size, GFP_KERNEL);
- }
- return NULL;
+ return drm_edid_duplicate(drm_edid_raw(adev->mode_info.bios_hardcoded_edid));
}
static void amdgpu_connector_get_edid(struct drm_connector *connector)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
index d002b845d8ac..5e3faefc5510 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
@@ -51,6 +51,7 @@ struct amdgpu_encoder;
struct amdgpu_router;
struct amdgpu_hpd;
struct edid;
+struct drm_edid;
#define to_amdgpu_crtc(x) container_of(x, struct amdgpu_crtc, base)
#define to_amdgpu_connector(x) container_of(x, struct amdgpu_connector, base)
@@ -326,8 +327,7 @@ struct amdgpu_mode_info {
/* FMT dithering */
struct drm_property *dither_property;
/* hardcoded DFP edid from BIOS */
- struct edid *bios_hardcoded_edid;
- int bios_hardcoded_edid_size;
+ const struct drm_edid *bios_hardcoded_edid;
/* firmware flags */
u32 firmware_flags;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.c
index 6415d0d039e1..e5f508d34ed8 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.c
@@ -549,7 +549,7 @@ static int amdgpu_vkms_sw_fini(void *handle)
adev->mode_info.mode_config_initialized = false;
- kfree(adev->mode_info.bios_hardcoded_edid);
+ drm_edid_free(adev->mode_info.bios_hardcoded_edid);
kfree(adev->amdgpu_vkms_output);
return 0;
}
diff --git a/drivers/gpu/drm/amd/amdgpu/atombios_encoders.c b/drivers/gpu/drm/amd/amdgpu/atombios_encoders.c
index ebf83fee43bb..8defca3705d5 100644
--- a/drivers/gpu/drm/amd/amdgpu/atombios_encoders.c
+++ b/drivers/gpu/drm/amd/amdgpu/atombios_encoders.c
@@ -2064,23 +2064,18 @@ amdgpu_atombios_encoder_get_lcd_info(struct amdgpu_encoder *encoder)
case LCD_FAKE_EDID_PATCH_RECORD_TYPE:
fake_edid_record = (ATOM_FAKE_EDID_PATCH_RECORD *)record;
if (fake_edid_record->ucFakeEDIDLength) {
- struct edid *edid;
+ const struct drm_edid *edid;
int edid_size;
if (fake_edid_record->ucFakeEDIDLength == 128)
edid_size = fake_edid_record->ucFakeEDIDLength;
else
edid_size = fake_edid_record->ucFakeEDIDLength * 128;
- edid = kmemdup(&fake_edid_record->ucFakeEDIDString[0],
- edid_size, GFP_KERNEL);
- if (edid) {
- if (drm_edid_is_valid(edid)) {
- adev->mode_info.bios_hardcoded_edid = edid;
- adev->mode_info.bios_hardcoded_edid_size = edid_size;
- } else {
- kfree(edid);
- }
- }
+ edid = drm_edid_alloc(fake_edid_record->ucFakeEDIDString, edid_size);
+ if (drm_edid_valid(edid))
+ adev->mode_info.bios_hardcoded_edid = edid;
+ else
+ drm_edid_free(edid);
record += struct_size(fake_edid_record,
ucFakeEDIDString,
edid_size);
diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c
index dddb5fe16f2c..742adbc460c9 100644
--- a/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c
@@ -2846,7 +2846,7 @@ static int dce_v10_0_sw_fini(void *handle)
{
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
- kfree(adev->mode_info.bios_hardcoded_edid);
+ drm_edid_free(adev->mode_info.bios_hardcoded_edid);
drm_kms_helper_poll_fini(adev_to_drm(adev));
diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c
index 11780e4d7e9f..8d46ebadfa46 100644
--- a/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c
@@ -2973,7 +2973,7 @@ static int dce_v11_0_sw_fini(void *handle)
{
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
- kfree(adev->mode_info.bios_hardcoded_edid);
+ drm_edid_free(adev->mode_info.bios_hardcoded_edid);
drm_kms_helper_poll_fini(adev_to_drm(adev));
diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v6_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v6_0.c
index 05c0df97f01d..f08dc6a3886f 100644
--- a/drivers/gpu/drm/amd/amdgpu/dce_v6_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/dce_v6_0.c
@@ -2745,7 +2745,7 @@ static int dce_v6_0_sw_fini(void *handle)
{
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
- kfree(adev->mode_info.bios_hardcoded_edid);
+ drm_edid_free(adev->mode_info.bios_hardcoded_edid);
drm_kms_helper_poll_fini(adev_to_drm(adev));
diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c
index dc73e301d937..a6a3adf2ae13 100644
--- a/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c
@@ -2766,7 +2766,7 @@ static int dce_v8_0_sw_fini(void *handle)
{
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
- kfree(adev->mode_info.bios_hardcoded_edid);
+ drm_edid_free(adev->mode_info.bios_hardcoded_edid);
drm_kms_helper_poll_fini(adev_to_drm(adev));
--
2.45.2
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