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drm/radeon: convert bios_hardcoded_edid to drm_edid

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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@weissschuh.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Thomas Weißschuh 2024-07-26 15:40:16 +02:00 committed by Alex Deucher
parent aeb81b62c7
commit c6bb3acf1c
5 changed files with 16 additions and 37 deletions
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17
drivers/gpu/drm/radeon/radeon_atombios.c
View File

@ -1716,23 +1716,18 @@ struct radeon_encoder_atom_dig *radeon_atombios_get_lvds_info(struct
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)) {
rdev->mode_info.bios_hardcoded_edid = edid;
rdev->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))
rdev->mode_info.bios_hardcoded_edid = edid;
else
drm_edid_free(edid);
record += struct_size(fake_edid_record,
ucFakeEDIDString,
edid_size);

26
drivers/gpu/drm/radeon/radeon_combios.c
View File

@ -370,7 +370,7 @@ static uint16_t combios_get_table_offset(struct drm_device *dev,
bool radeon_combios_check_hardcoded_edid(struct radeon_device *rdev)
{
int edid_info, size;
struct edid *edid;
const struct drm_edid *edid;
unsigned char *raw;
edid_info = combios_get_table_offset(rdev_to_drm(rdev), COMBIOS_HARDCODED_EDID_TABLE);
if (!edid_info)
@ -378,19 +378,14 @@ bool radeon_combios_check_hardcoded_edid(struct radeon_device *rdev)
raw = rdev->bios + edid_info;
size = EDID_LENGTH * (raw[0x7e] + 1);
edid = kmalloc(size, GFP_KERNEL);
if (edid == NULL)
return false;
edid = drm_edid_alloc(raw, size);
memcpy((unsigned char *)edid, raw, size);
if (!drm_edid_is_valid(edid)) {
kfree(edid);
if (!drm_edid_valid(edid)) {
drm_edid_free(edid);
return false;
}
rdev->mode_info.bios_hardcoded_edid = edid;
rdev->mode_info.bios_hardcoded_edid_size = size;
return true;
}
@ -398,18 +393,7 @@ bool radeon_combios_check_hardcoded_edid(struct radeon_device *rdev)
struct edid *
radeon_bios_get_hardcoded_edid(struct radeon_device *rdev)
{
struct edid *edid;
if (rdev->mode_info.bios_hardcoded_edid) {
edid = kmalloc(rdev->mode_info.bios_hardcoded_edid_size, GFP_KERNEL);
if (edid) {
memcpy((unsigned char *)edid,
(unsigned char *)rdev->mode_info.bios_hardcoded_edid,
rdev->mode_info.bios_hardcoded_edid_size);
return edid;
}
}
return NULL;
return drm_edid_duplicate(drm_edid_raw(rdev->mode_info.bios_hardcoded_edid));
}
static struct radeon_i2c_bus_rec combios_setup_i2c_bus(struct radeon_device *rdev,

4
drivers/gpu/drm/radeon/radeon_connectors.c
View File

@ -1059,7 +1059,7 @@ radeon_vga_detect(struct drm_connector *connector, bool force)
*/
if ((!rdev->is_atom_bios) &&
(ret == connector_status_disconnected) &&
rdev->mode_info.bios_hardcoded_edid_size) {
rdev->mode_info.bios_hardcoded_edid) {
ret = connector_status_connected;
}
@ -1392,7 +1392,7 @@ radeon_dvi_detect(struct drm_connector *connector, bool force)
out:
if ((!rdev->is_atom_bios) &&
(ret == connector_status_disconnected) &&
rdev->mode_info.bios_hardcoded_edid_size) {
rdev->mode_info.bios_hardcoded_edid) {
radeon_connector->use_digital = true;
ret = connector_status_connected;
}

2
drivers/gpu/drm/radeon/radeon_display.c
View File

@ -1658,7 +1658,7 @@ void radeon_modeset_fini(struct radeon_device *rdev)
rdev->mode_info.mode_config_initialized = false;
}
kfree(rdev->mode_info.bios_hardcoded_edid);
drm_edid_free(rdev->mode_info.bios_hardcoded_edid);
/* free i2c buses */
radeon_i2c_fini(rdev);

4
drivers/gpu/drm/radeon/radeon_mode.h
View File

@ -39,6 +39,7 @@
#include <linux/i2c-algo-bit.h>
struct edid;
struct drm_edid;
struct radeon_bo;
struct radeon_device;
@ -262,8 +263,7 @@ struct radeon_mode_info {
/* Output CSC */
struct drm_property *output_csc_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 */
u16 firmware_flags;