diff options
| author |   Jun Lei <Jun.Lei@amd.com> | 2019-08-02 17:22:57 -0400 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2019-11-13 15:29:43 -0500 |
| commit | d9a07577b8a3131c90c187fb2b89662bee535cfd (patch) | |
| tree | 43b6d3ac6b245e908a54948b27a1a5aab19b7683 /drivers/gpu/drm/amd/display/dc/bios | |
| parent | drm/amd/display: Add some hardware status in DTN log debugfs (diff) | |
| download | linux-dev-d9a07577b8a3131c90c187fb2b89662bee535cfd.tar.xz linux-dev-d9a07577b8a3131c90c187fb2b89662bee535cfd.zip | |
drm/amd/display: add oem i2c implemenation in dc
[why]
Need it for some OEM I2C devices in Nv10
[how]
Link up code to parse OEM table and expose DC interface
to access the pins
Signed-off-by: Jun Lei <Jun.Lei@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/bios')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c | 63 |
1 files changed, 39 insertions, 24 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c b/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c index 7873abea4112..05be2c0c25d1 100644 --- a/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c +++ b/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c @@ -294,11 +294,21 @@ static enum bp_result bios_parser_get_i2c_info(struct dc_bios *dcb, struct atom_display_object_path_v2 *object; struct atom_common_record_header *header; struct atom_i2c_record *record; + struct atom_i2c_record dummy_record = {0}; struct bios_parser *bp = BP_FROM_DCB(dcb); if (!info) return BP_RESULT_BADINPUT; + if (id.type == OBJECT_TYPE_GENERIC) { + dummy_record.i2c_id = id.id; + + if (get_gpio_i2c_info(bp, &dummy_record, info) == BP_RESULT_OK) + return BP_RESULT_OK; + else + return BP_RESULT_NORECORD; + } + object = get_bios_object(bp, id); if (!object) @@ -341,6 +351,7 @@ static enum bp_result get_gpio_i2c_info( struct atom_gpio_pin_lut_v2_1 *header; uint32_t count = 0; unsigned int table_index = 0; + bool find_valid = false; if (!info) return BP_RESULT_BADINPUT; @@ -368,33 +379,28 @@ static enum bp_result get_gpio_i2c_info( - sizeof(struct atom_common_table_header)) / sizeof(struct atom_gpio_pin_assignment); - table_index = record->i2c_id & I2C_HW_LANE_MUX; - - if (count < table_index) { - bool find_valid = false; - - for (table_index = 0; table_index < count; table_index++) { - if (((record->i2c_id & I2C_HW_CAP) == ( - header->gpio_pin[table_index].gpio_id & - I2C_HW_CAP)) && - ((record->i2c_id & I2C_HW_ENGINE_ID_MASK) == - (header->gpio_pin[table_index].gpio_id & - I2C_HW_ENGINE_ID_MASK)) && - ((record->i2c_id & I2C_HW_LANE_MUX) == - (header->gpio_pin[table_index].gpio_id & - I2C_HW_LANE_MUX))) { - /* still valid */ - find_valid = true; - break; - } + for (table_index = 0; table_index < count; table_index++) { + if (((record->i2c_id & I2C_HW_CAP) == ( + header->gpio_pin[table_index].gpio_id & + I2C_HW_CAP)) && + ((record->i2c_id & I2C_HW_ENGINE_ID_MASK) == + (header->gpio_pin[table_index].gpio_id & + I2C_HW_ENGINE_ID_MASK)) && + ((record->i2c_id & I2C_HW_LANE_MUX) == + (header->gpio_pin[table_index].gpio_id & + I2C_HW_LANE_MUX))) { + /* still valid */ + find_valid = true; + break; } - /* If we don't find the entry that we are looking for then - * we will return BP_Result_BadBiosTable. - */ - if (find_valid == false) - return BP_RESULT_BADBIOSTABLE; } + /* If we don't find the entry that we are looking for then + * we will return BP_Result_BadBiosTable. + */ + if (find_valid == false) + return BP_RESULT_BADBIOSTABLE; + /* get the GPIO_I2C_INFO */ info->i2c_hw_assist = (record->i2c_id & I2C_HW_CAP) ? true : false; info->i2c_line = record->i2c_id & I2C_HW_LANE_MUX; @@ -1205,6 +1211,8 @@ static enum bp_result get_firmware_info_v3_1( bp->cmd_tbl.get_smu_clock_info(bp, SMU9_SYSPLL0_ID) * 10; } + info->oem_i2c_present = false; + return BP_RESULT_OK; } @@ -1283,6 +1291,13 @@ static enum bp_result get_firmware_info_v3_2( bp->cmd_tbl.get_smu_clock_info(bp, SMU11_SYSPLL3_0_ID) * 10; } + if (firmware_info->board_i2c_feature_id == 0x2) { + info->oem_i2c_present = true; + info->oem_i2c_obj_id = firmware_info->board_i2c_feature_gpio_id; + } else { + info->oem_i2c_present = false; + } + return BP_RESULT_OK; } |