diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dcn31/dcn31_apg.c')
-rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn31/dcn31_apg.c | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_apg.c b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_apg.c new file mode 100644 index 0000000000..05aac3e444 --- /dev/null +++ b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_apg.c @@ -0,0 +1,119 @@ +/* + * Copyright 2019 Advanced Micro Devices, Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + * Authors: AMD + * + */ + + +#include "dc_bios_types.h" +#include "hw_shared.h" +#include "dcn31_apg.h" +#include "reg_helper.h" + +#define DC_LOGGER \ + apg31->base.ctx->logger + +#define REG(reg)\ + (apg31->regs->reg) + +#undef FN +#define FN(reg_name, field_name) \ + apg31->apg_shift->field_name, apg31->apg_mask->field_name + + +#define CTX \ + apg31->base.ctx + + +static void apg31_enable( + struct apg *apg) +{ + struct dcn31_apg *apg31 = DCN31_APG_FROM_APG(apg); + + /* Reset APG */ + REG_UPDATE(APG_CONTROL, APG_RESET, 1); + REG_WAIT(APG_CONTROL, + APG_RESET_DONE, 1, + 1, 10); + REG_UPDATE(APG_CONTROL, APG_RESET, 0); + REG_WAIT(APG_CONTROL, + APG_RESET_DONE, 0, + 1, 10); + + /* Enable APG */ + REG_UPDATE(APG_CONTROL2, APG_ENABLE, 1); +} + +static void apg31_disable( + struct apg *apg) +{ + struct dcn31_apg *apg31 = DCN31_APG_FROM_APG(apg); + + /* Disable APG */ + REG_UPDATE(APG_CONTROL2, APG_ENABLE, 0); +} + +static void apg31_se_audio_setup( + struct apg *apg, + unsigned int az_inst, + struct audio_info *audio_info) +{ + struct dcn31_apg *apg31 = DCN31_APG_FROM_APG(apg); + + ASSERT(audio_info); + /* This should not happen.it does so we don't get BSOD*/ + if (audio_info == NULL) + return; + + /* DisplayPort only allows for one audio stream with stream ID 0 */ + REG_UPDATE(APG_CONTROL2, APG_DP_AUDIO_STREAM_ID, 0); + + /* When running in "pair mode", pairs of audio channels have their own enable + * this is for really old audio drivers */ + REG_UPDATE(APG_DBG_GEN_CONTROL, APG_DBG_AUDIO_CHANNEL_ENABLE, 0xFF); + + /* Disable forced mem power off */ + REG_UPDATE(APG_MEM_PWR, APG_MEM_PWR_FORCE, 0); +} + +static struct apg_funcs dcn31_apg_funcs = { + .se_audio_setup = apg31_se_audio_setup, + .enable_apg = apg31_enable, + .disable_apg = apg31_disable, +}; + +void apg31_construct(struct dcn31_apg *apg31, + struct dc_context *ctx, + uint32_t inst, + const struct dcn31_apg_registers *apg_regs, + const struct dcn31_apg_shift *apg_shift, + const struct dcn31_apg_mask *apg_mask) +{ + apg31->base.ctx = ctx; + + apg31->base.inst = inst; + apg31->base.funcs = &dcn31_apg_funcs; + + apg31->regs = apg_regs; + apg31->apg_shift = apg_shift; + apg31->apg_mask = apg_mask; +} |