diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dcn32/dcn32_dio_link_encoder.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn32/dcn32_dio_link_encoder.c | 85 |
1 files changed, 66 insertions, 19 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_dio_link_encoder.c b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_dio_link_encoder.c index d761b0df2878..e224a028d68a 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_dio_link_encoder.c +++ b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_dio_link_encoder.c @@ -34,6 +34,7 @@ #include "dc_bios_types.h" #include "link_enc_cfg.h" +#include "dc_dmub_srv.h" #include "gpio_service_interface.h" #ifndef MIN @@ -61,6 +62,38 @@ #define AUX_REG_WRITE(reg_name, val) \ dm_write_reg(CTX, AUX_REG(reg_name), val) +static uint8_t phy_id_from_transmitter(enum transmitter t) +{ + uint8_t phy_id; + + switch (t) { + case TRANSMITTER_UNIPHY_A: + phy_id = 0; + break; + case TRANSMITTER_UNIPHY_B: + phy_id = 1; + break; + case TRANSMITTER_UNIPHY_C: + phy_id = 2; + break; + case TRANSMITTER_UNIPHY_D: + phy_id = 3; + break; + case TRANSMITTER_UNIPHY_E: + phy_id = 4; + break; + case TRANSMITTER_UNIPHY_F: + phy_id = 5; + break; + case TRANSMITTER_UNIPHY_G: + phy_id = 6; + break; + default: + phy_id = 0; + break; + } + return phy_id; +} void enc32_hw_init(struct link_encoder *enc) { @@ -117,38 +150,50 @@ void dcn32_link_encoder_enable_dp_output( } } -static bool dcn32_link_encoder_is_in_alt_mode(struct link_encoder *enc) +static bool query_dp_alt_from_dmub(struct link_encoder *enc, + union dmub_rb_cmd *cmd) { struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc); - uint32_t dp_alt_mode_disable = 0; - bool is_usb_c_alt_mode = false; - if (enc->features.flags.bits.DP_IS_USB_C) { - /* if value == 1 alt mode is disabled, otherwise it is enabled */ - REG_GET(RDPCSPIPE_PHY_CNTL6, RDPCS_PHY_DPALT_DISABLE, &dp_alt_mode_disable); - is_usb_c_alt_mode = (dp_alt_mode_disable == 0); - } + memset(cmd, 0, sizeof(*cmd)); + cmd->query_dp_alt.header.type = DMUB_CMD__VBIOS; + cmd->query_dp_alt.header.sub_type = + DMUB_CMD__VBIOS_TRANSMITTER_QUERY_DP_ALT; + cmd->query_dp_alt.header.payload_bytes = sizeof(cmd->query_dp_alt.data); + cmd->query_dp_alt.data.phy_id = phy_id_from_transmitter(enc10->base.transmitter); + + if (!dc_wake_and_execute_dmub_cmd(enc->ctx, cmd, DM_DMUB_WAIT_TYPE_WAIT_WITH_REPLY)) + return false; - return is_usb_c_alt_mode; + return true; } -static void dcn32_link_encoder_get_max_link_cap(struct link_encoder *enc, +bool dcn32_link_encoder_is_in_alt_mode(struct link_encoder *enc) +{ + union dmub_rb_cmd cmd; + + if (!query_dp_alt_from_dmub(enc, &cmd)) + return false; + + return (cmd.query_dp_alt.data.is_dp_alt_disable == 0); +} + +void dcn32_link_encoder_get_max_link_cap(struct link_encoder *enc, struct dc_link_settings *link_settings) { - struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc); - uint32_t is_in_usb_c_dp4_mode = 0; + union dmub_rb_cmd cmd; dcn10_link_encoder_get_max_link_cap(enc, link_settings); - /* in usb c dp2 mode, max lane count is 2 */ - if (enc->funcs->is_in_alt_mode && enc->funcs->is_in_alt_mode(enc)) { - REG_GET(RDPCSPIPE_PHY_CNTL6, RDPCS_PHY_DPALT_DP4, &is_in_usb_c_dp4_mode); - if (!is_in_usb_c_dp4_mode) - link_settings->lane_count = MIN(LANE_COUNT_TWO, link_settings->lane_count); - } + if (!query_dp_alt_from_dmub(enc, &cmd)) + return; + if (cmd.query_dp_alt.data.is_usb && + cmd.query_dp_alt.data.is_dp4 == 0) + link_settings->lane_count = MIN(LANE_COUNT_TWO, link_settings->lane_count); } + static const struct link_encoder_funcs dcn32_link_enc_funcs = { .read_state = link_enc2_read_state, .validate_output_with_stream = @@ -203,13 +248,15 @@ void dcn32_link_encoder_construct( enc10->base.hpd_source = init_data->hpd_source; enc10->base.connector = init_data->connector; - enc10->base.preferred_engine = ENGINE_ID_UNKNOWN; enc10->base.features = *enc_features; if (enc10->base.connector.id == CONNECTOR_ID_USBC) enc10->base.features.flags.bits.DP_IS_USB_C = 1; + if (enc10->base.connector.id == CONNECTOR_ID_USBC) + enc10->base.features.flags.bits.DP_IS_USB_C = 1; + enc10->base.transmitter = init_data->transmitter; /* set the flag to indicate whether driver poll the I2C data pin |