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drm/amdgpu: rework i2c init and fini

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No functional change.  Rework the code to allow for
adding some additional i2c buses in conjunction with DC
in the future.

Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher
2024-12-19 12:50:43 -05:00
parent ba7f8eb7e4
commit 1c0b144bf7
3 changed files with 11 additions and 4 deletions
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6
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
View File

@@ -4465,8 +4465,7 @@ int amdgpu_device_init(struct amdgpu_device *adev,
goto failed;
}
/* init i2c buses */
if (!amdgpu_device_has_dc_support(adev))
amdgpu_atombios_i2c_init(adev);
amdgpu_i2c_init(adev);
}
}
@@ -4735,8 +4734,7 @@ void amdgpu_device_fini_sw(struct amdgpu_device *adev)
amdgpu_reset_fini(adev);
/* free i2c buses */
if (!amdgpu_device_has_dc_support(adev))
amdgpu_i2c_fini(adev);
amdgpu_i2c_fini(adev);
if (amdgpu_emu_mode != 1)
amdgpu_atombios_fini(adev);

8
drivers/gpu/drm/amd/amdgpu/amdgpu_i2c.c
View File

@@ -225,6 +225,14 @@ void amdgpu_i2c_destroy(struct amdgpu_i2c_chan *i2c)
kfree(i2c);
}
void amdgpu_i2c_init(struct amdgpu_device *adev)
{
if (!adev->is_atom_fw) {
if (!amdgpu_device_has_dc_support(adev))
amdgpu_atombios_i2c_init(adev);
}
}
/* remove all the buses */
void amdgpu_i2c_fini(struct amdgpu_device *adev)
{

1
drivers/gpu/drm/amd/amdgpu/amdgpu_i2c.h
View File

@@ -28,6 +28,7 @@ struct amdgpu_i2c_chan *amdgpu_i2c_create(struct drm_device *dev,
const struct amdgpu_i2c_bus_rec *rec,
const char *name);
void amdgpu_i2c_destroy(struct amdgpu_i2c_chan *i2c);
void amdgpu_i2c_init(struct amdgpu_device *adev);
void amdgpu_i2c_fini(struct amdgpu_device *adev);
struct amdgpu_i2c_chan *
amdgpu_i2c_lookup(struct amdgpu_device *adev,