diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/i2caux/dce110/i2c_hw_engine_dce110.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/i2caux/dce110/i2c_hw_engine_dce110.c | 26 |
1 files changed, 15 insertions, 11 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/i2caux/dce110/i2c_hw_engine_dce110.c b/drivers/gpu/drm/amd/display/dc/i2caux/dce110/i2c_hw_engine_dce110.c index b7256f595052..9cbe1a7a6bcb 100644 --- a/drivers/gpu/drm/amd/display/dc/i2caux/dce110/i2c_hw_engine_dce110.c +++ b/drivers/gpu/drm/amd/display/dc/i2caux/dce110/i2c_hw_engine_dce110.c @@ -62,12 +62,7 @@ enum dc_i2c_arbitration { DC_I2C_ARBITRATION__DC_I2C_SW_PRIORITY_HIGH }; -enum { - /* No timeout in HW - * (timeout implemented in SW by querying status) */ - I2C_SETUP_TIME_LIMIT = 255, - I2C_HW_BUFFER_SIZE = 538 -}; + /* * @brief @@ -152,6 +147,11 @@ static bool setup_engine( struct i2c_engine *i2c_engine) { struct i2c_hw_engine_dce110 *hw_engine = FROM_I2C_ENGINE(i2c_engine); + uint32_t i2c_setup_limit = I2C_SETUP_TIME_LIMIT_DCE; + uint32_t reset_length = 0; + + if (hw_engine->base.base.setup_limit != 0) + i2c_setup_limit = hw_engine->base.base.setup_limit; /* Program pin select */ REG_UPDATE_6( @@ -164,11 +164,15 @@ static bool setup_engine( DC_I2C_DDC_SELECT, hw_engine->engine_id); /* Program time limit */ - REG_UPDATE_N( - SETUP, 2, - FN(DC_I2C_DDC1_SETUP, DC_I2C_DDC1_TIME_LIMIT), I2C_SETUP_TIME_LIMIT, - FN(DC_I2C_DDC1_SETUP, DC_I2C_DDC1_ENABLE), 1); - + if (hw_engine->base.base.send_reset_length == 0) { + /*pre-dcn*/ + REG_UPDATE_N( + SETUP, 2, + FN(DC_I2C_DDC1_SETUP, DC_I2C_DDC1_TIME_LIMIT), i2c_setup_limit, + FN(DC_I2C_DDC1_SETUP, DC_I2C_DDC1_ENABLE), 1); + } else { + reset_length = hw_engine->base.base.send_reset_length; + } /* Program HW priority * set to High - interrupt software I2C at any time * Enable restart of SW I2C that was interrupted by HW |