diff options
author | abdoulaye berthe <abdoulaye.berthe@amd.com> | 2019-09-19 15:51:00 -0400 |
---|---|---|
committer | Alex Deucher <alexander.deucher@amd.com> | 2019-11-13 15:29:43 -0500 |
commit | 9bffd0806d80de9c189b8cf69b3022783e5c8f2a (patch) | |
tree | 0da81489def3dee616dd53557445f2bdf2334d0c /drivers/gpu | |
parent | 64c12b733fe7eaffa9207e6f30b313595c6e6597 (diff) | |
download | linux-9bffd0806d80de9c189b8cf69b3022783e5c8f2a.tar.bz2 |
drm/amd/display: use previous aux timeout val if no repeater.
[Why]
The aux timeout value is not default before reading link cap.
Setting it to default when lttpr is not enabled causes some monitor
not to light up.
[How]
Read the aux engine timeout value before setting it to extended.
Set the aux engine timeout to its previous value if no lttpr.
Signed-off-by: abdoulaye berthe <abdoulaye.berthe@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@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/core/dc_link_ddc.c | 13 | ||||
-rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 9 | ||||
-rw-r--r-- | drivers/gpu/drm/amd/display/dc/dce/dce_aux.c | 46 | ||||
-rw-r--r-- | drivers/gpu/drm/amd/display/dc/dce/dce_aux.h | 2 | ||||
-rw-r--r-- | drivers/gpu/drm/amd/display/dc/inc/dc_link_ddc.h | 2 | ||||
-rw-r--r-- | drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h | 2 |
6 files changed, 52 insertions, 22 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c index a2e6adacaff6..c8037af93e0a 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c @@ -650,17 +650,16 @@ bool dc_link_aux_transfer_with_retries(struct ddc_service *ddc, } -enum dc_status dc_link_aux_configure_timeout(struct ddc_service *ddc, +uint32_t dc_link_aux_configure_timeout(struct ddc_service *ddc, uint32_t timeout) { - enum dc_status status = DC_OK; + uint32_t prev_timeout = 0; struct ddc *ddc_pin = ddc->ddc_pin; - if (ddc->ctx->dc->res_pool->engines[ddc_pin->pin_data->en]->funcs->configure_timeout == NULL) - return DC_ERROR_UNEXPECTED; - if (!ddc->ctx->dc->res_pool->engines[ddc_pin->pin_data->en]->funcs->configure_timeout(ddc, timeout)) - status = DC_ERROR_UNEXPECTED; - return status; + if (ddc->ctx->dc->res_pool->engines[ddc_pin->pin_data->en]->funcs->configure_timeout) + prev_timeout = + ddc->ctx->dc->res_pool->engines[ddc_pin->pin_data->en]->funcs->configure_timeout(ddc, timeout); + return prev_timeout; } /*test only function*/ diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c index 11b6e14b345e..6e1f00ab6646 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c @@ -2977,6 +2977,7 @@ static bool retrieve_link_cap(struct dc_link *link) union dp_downstream_port_present ds_port = { 0 }; enum dc_status status = DC_ERROR_UNEXPECTED; uint32_t read_dpcd_retry_cnt = 3; + uint32_t prev_timeout_val; int i; struct dp_sink_hw_fw_revision dp_hw_fw_revision; @@ -2987,7 +2988,9 @@ static bool retrieve_link_cap(struct dc_link *link) link->is_lttpr_mode_transparent = true; if (ext_timeout_support) { - status = dc_link_aux_configure_timeout(link->ddc, LINK_AUX_DEFAULT_EXTENDED_TIMEOUT_PERIOD); + prev_timeout_val = + dc_link_aux_configure_timeout(link->ddc, + LINK_AUX_DEFAULT_EXTENDED_TIMEOUT_PERIOD); } memset(dpcd_data, '\0', sizeof(dpcd_data)); @@ -3022,7 +3025,7 @@ static bool retrieve_link_cap(struct dc_link *link) return false; } - if (ext_timeout_support && link->dpcd_caps.dpcd_rev.raw >= 0x14) { + if (ext_timeout_support) { status = core_link_read_dpcd( link, DP_PHY_REPEATER_CNT, @@ -3063,7 +3066,7 @@ static bool retrieve_link_cap(struct dc_link *link) &link->dpcd_caps.lttpr_caps.max_ext_timeout, sizeof(link->dpcd_caps.lttpr_caps.max_ext_timeout)); } else { - dc_link_aux_configure_timeout(link->ddc, LINK_AUX_DEFAULT_TIMEOUT_PERIOD); + dc_link_aux_configure_timeout(link->ddc, prev_timeout_val); } } diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c b/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c index e472608faf33..f7626cd70ec8 100644 --- a/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c +++ b/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c @@ -60,12 +60,14 @@ enum { AUX_DEFER_RETRY_COUNTER = 6 }; -#define TIME_OUT_INCREMENT 1016 -#define TIME_OUT_MULTIPLIER_8 8 -#define TIME_OUT_MULTIPLIER_16 16 -#define TIME_OUT_MULTIPLIER_32 32 -#define TIME_OUT_MULTIPLIER_64 64 -#define MAX_TIMEOUT_LENGTH 127 +#define TIME_OUT_INCREMENT 1016 +#define TIME_OUT_MULTIPLIER_8 8 +#define TIME_OUT_MULTIPLIER_16 16 +#define TIME_OUT_MULTIPLIER_32 32 +#define TIME_OUT_MULTIPLIER_64 64 +#define MAX_TIMEOUT_LENGTH 127 +#define DEFAULT_AUX_ENGINE_MULT 0 +#define DEFAULT_AUX_ENGINE_LENGTH 69 static void release_engine( struct dce_aux *engine) @@ -427,11 +429,14 @@ void dce110_engine_destroy(struct dce_aux **engine) } -static bool dce_aux_configure_timeout(struct ddc_service *ddc, +static uint32_t dce_aux_configure_timeout(struct ddc_service *ddc, uint32_t timeout_in_us) { uint32_t multiplier = 0; uint32_t length = 0; + uint32_t prev_length = 0; + uint32_t prev_mult = 0; + uint32_t prev_timeout_val = 0; struct ddc *ddc_pin = ddc->ddc_pin; struct dce_aux *aux_engine = ddc->ctx->dc->res_pool->engines[ddc_pin->pin_data->en]; struct aux_engine_dce110 *aux110 = FROM_AUX_ENGINE(aux_engine); @@ -440,7 +445,10 @@ static bool dce_aux_configure_timeout(struct ddc_service *ddc, aux110->polling_timeout_period = timeout_in_us * SW_AUX_TIMEOUT_PERIOD_MULTIPLIER; /* 2-Update aux timeout period length and multiplier */ - if (timeout_in_us <= TIME_OUT_INCREMENT) { + if (timeout_in_us == 0) { + multiplier = DEFAULT_AUX_ENGINE_MULT; + length = DEFAULT_AUX_ENGINE_LENGTH; + } else if (timeout_in_us <= TIME_OUT_INCREMENT) { multiplier = 0; length = timeout_in_us/TIME_OUT_MULTIPLIER_8; if (timeout_in_us % TIME_OUT_MULTIPLIER_8 != 0) @@ -464,9 +472,29 @@ static bool dce_aux_configure_timeout(struct ddc_service *ddc, length = (length < MAX_TIMEOUT_LENGTH) ? length : MAX_TIMEOUT_LENGTH; + REG_GET_2(AUX_DPHY_RX_CONTROL1, AUX_RX_TIMEOUT_LEN, &prev_length, AUX_RX_TIMEOUT_LEN_MUL, &prev_mult); + + switch (prev_mult) { + case 0: + prev_timeout_val = prev_length * TIME_OUT_MULTIPLIER_8; + break; + case 1: + prev_timeout_val = prev_length * TIME_OUT_MULTIPLIER_16; + break; + case 2: + prev_timeout_val = prev_length * TIME_OUT_MULTIPLIER_32; + break; + case 3: + prev_timeout_val = prev_length * TIME_OUT_MULTIPLIER_64; + break; + default: + prev_timeout_val = DEFAULT_AUX_ENGINE_LENGTH * TIME_OUT_MULTIPLIER_8; + break; + } + REG_UPDATE_SEQ_2(AUX_DPHY_RX_CONTROL1, AUX_RX_TIMEOUT_LEN, length, AUX_RX_TIMEOUT_LEN_MUL, multiplier); - return true; + return prev_timeout_val; } static struct dce_aux_funcs aux_functions = { diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_aux.h b/drivers/gpu/drm/amd/display/dc/dce/dce_aux.h index b4b2c79a8073..2e2e925a506b 100644 --- a/drivers/gpu/drm/amd/display/dc/dce/dce_aux.h +++ b/drivers/gpu/drm/amd/display/dc/dce/dce_aux.h @@ -311,7 +311,7 @@ bool dce_aux_transfer_with_retries(struct ddc_service *ddc, struct aux_payload *cmd); struct dce_aux_funcs { - bool (*configure_timeout) + uint32_t (*configure_timeout) (struct ddc_service *ddc, uint32_t timeout); void (*destroy) diff --git a/drivers/gpu/drm/amd/display/dc/inc/dc_link_ddc.h b/drivers/gpu/drm/amd/display/dc/inc/dc_link_ddc.h index 14716ba35662..de2d160114db 100644 --- a/drivers/gpu/drm/amd/display/dc/inc/dc_link_ddc.h +++ b/drivers/gpu/drm/amd/display/dc/inc/dc_link_ddc.h @@ -105,7 +105,7 @@ int dc_link_aux_transfer_raw(struct ddc_service *ddc, bool dc_link_aux_transfer_with_retries(struct ddc_service *ddc, struct aux_payload *payload); -enum dc_status dc_link_aux_configure_timeout(struct ddc_service *ddc, +uint32_t dc_link_aux_configure_timeout(struct ddc_service *ddc, uint32_t timeout); void dal_ddc_service_write_scdc_data( diff --git a/drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h b/drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h index 045138dbdccb..a6500b98fe0d 100644 --- a/drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h +++ b/drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h @@ -28,7 +28,7 @@ #define LINK_TRAINING_ATTEMPTS 4 #define LINK_TRAINING_RETRY_DELAY 50 /* ms */ -#define LINK_AUX_DEFAULT_EXTENDED_TIMEOUT_PERIOD 32000 /*us*/ +#define LINK_AUX_DEFAULT_EXTENDED_TIMEOUT_PERIOD 3200 /*us*/ #define LINK_AUX_DEFAULT_TIMEOUT_PERIOD 400 /*us*/ struct dc_link; |