diff options
| author | Lewis Huang | 2020-01-14 11:08:34 +0800 |
|---|---|---|
| committer | Alex Deucher | 2020-01-22 16:55:28 -0500 |
| commit | 09f6dd6e6d4305cf199443bb7d099f4f64dc374b (patch) | |
| tree | f1f595c62f705409e0f3741084e6c4e7bfa17fb6 /drivers/gpu | |
| parent | 947daab2a2d1813a8d973c59551545e44bdf1549 (diff) | |
drm/amd/display: init hw i2c speed
[Why]
Driver didn't init hw i2c speed cause hdcp hw cannot
send command, because the default value of speed register
is 0x2.
[How]
Restore the default speed when release i2c engine
Signed-off-by: Lewis Huang <Lewis.Huang@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dce/dce_i2c_hw.c | 9 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dce/dce_i2c_hw.h | 1 |
2 files changed, 1 insertions, 9 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_i2c_hw.c b/drivers/gpu/drm/amd/display/dc/dce/dce_i2c_hw.c index 49d490214060..066188ba7949 100644 --- a/drivers/gpu/drm/amd/display/dc/dce/dce_i2c_hw.c +++ b/drivers/gpu/drm/amd/display/dc/dce/dce_i2c_hw.c @@ -339,7 +339,7 @@ static void release_engine( bool safe_to_reset; /* Restore original HW engine speed */ - REG_WRITE(SPEED, dce_i2c_hw->original_speed); + set_speed(dce_i2c_hw, dce_i2c_hw->default_speed); /* Reset HW engine */ { @@ -371,7 +371,6 @@ struct dce_i2c_hw *acquire_i2c_hw_engine( { uint32_t counter = 0; enum gpio_result result; - uint32_t current_speed; struct dce_i2c_hw *dce_i2c_hw = NULL; if (!ddc) @@ -409,11 +408,6 @@ struct dce_i2c_hw *acquire_i2c_hw_engine( dce_i2c_hw->ddc = ddc; - current_speed = REG_READ(SPEED); - - if (current_speed) - dce_i2c_hw->original_speed = current_speed; - if (!setup_engine(dce_i2c_hw)) { release_engine(dce_i2c_hw); return NULL; @@ -613,7 +607,6 @@ void dce_i2c_hw_construct( dce_i2c_hw->buffer_used_bytes = 0; dce_i2c_hw->transaction_count = 0; dce_i2c_hw->engine_keep_power_up_count = 1; - dce_i2c_hw->original_speed = DEFAULT_I2C_HW_SPEED; dce_i2c_hw->default_speed = DEFAULT_I2C_HW_SPEED; dce_i2c_hw->send_reset_length = 0; dce_i2c_hw->setup_limit = I2C_SETUP_TIME_LIMIT_DCE; diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_i2c_hw.h b/drivers/gpu/drm/amd/display/dc/dce/dce_i2c_hw.h index d4b2037f7d74..fb055e6883c0 100644 --- a/drivers/gpu/drm/amd/display/dc/dce/dce_i2c_hw.h +++ b/drivers/gpu/drm/amd/display/dc/dce/dce_i2c_hw.h @@ -256,7 +256,6 @@ struct i2c_request_transaction_data { struct dce_i2c_hw { struct ddc *ddc; - uint32_t original_speed; uint32_t engine_keep_power_up_count; uint32_t transaction_count; uint32_t buffer_used_bytes; |