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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
commit | ace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch) | |
tree | b2d64bc10158fdd5497876388cd68142ca374ed3 /drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dccg.c | |
parent | Initial commit. (diff) | |
download | linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip |
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dccg.c')
-rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dccg.c | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dccg.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dccg.c new file mode 100644 index 0000000000..5999b2da3a --- /dev/null +++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dccg.c @@ -0,0 +1,176 @@ +/* + * Copyright 2018 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 <linux/slab.h> + +#include "reg_helper.h" +#include "core_types.h" +#include "dcn20_dccg.h" + +#define TO_DCN_DCCG(dccg)\ + container_of(dccg, struct dcn_dccg, base) + +#define REG(reg) \ + (dccg_dcn->regs->reg) + +#undef FN +#define FN(reg_name, field_name) \ + dccg_dcn->dccg_shift->field_name, dccg_dcn->dccg_mask->field_name + +#define CTX \ + dccg_dcn->base.ctx +#define DC_LOGGER \ + dccg->ctx->logger + +void dccg2_update_dpp_dto(struct dccg *dccg, int dpp_inst, int req_dppclk) +{ + struct dcn_dccg *dccg_dcn = TO_DCN_DCCG(dccg); + + if (dccg->ref_dppclk && req_dppclk) { + int ref_dppclk = dccg->ref_dppclk; + int modulo, phase; + + // phase / modulo = dpp pipe clk / dpp global clk + modulo = 0xff; // use FF at the end + phase = ((modulo * req_dppclk) + ref_dppclk - 1) / ref_dppclk; + + if (phase > 0xff) { + ASSERT(false); + phase = 0xff; + } + + REG_SET_2(DPPCLK_DTO_PARAM[dpp_inst], 0, + DPPCLK0_DTO_PHASE, phase, + DPPCLK0_DTO_MODULO, modulo); + REG_UPDATE(DPPCLK_DTO_CTRL, + DPPCLK_DTO_ENABLE[dpp_inst], 1); + } else { + REG_UPDATE(DPPCLK_DTO_CTRL, + DPPCLK_DTO_ENABLE[dpp_inst], 0); + } + + dccg->pipe_dppclk_khz[dpp_inst] = req_dppclk; +} + +void dccg2_get_dccg_ref_freq(struct dccg *dccg, + unsigned int xtalin_freq_inKhz, + unsigned int *dccg_ref_freq_inKhz) +{ + struct dcn_dccg *dccg_dcn = TO_DCN_DCCG(dccg); + uint32_t clk_en = 0; + uint32_t clk_sel = 0; + + REG_GET_2(REFCLK_CNTL, REFCLK_CLOCK_EN, &clk_en, REFCLK_SRC_SEL, &clk_sel); + + if (clk_en != 0) { + // DCN20 has never been validated for non-xtalin as reference + // frequency. There's actually no way for DC to determine what + // frequency a non-xtalin source is. + ASSERT_CRITICAL(false); + } + + *dccg_ref_freq_inKhz = xtalin_freq_inKhz; + + return; +} + +void dccg2_set_fifo_errdet_ovr_en(struct dccg *dccg, + bool en) +{ + struct dcn_dccg *dccg_dcn = TO_DCN_DCCG(dccg); + + REG_UPDATE(DISPCLK_FREQ_CHANGE_CNTL, + DCCG_FIFO_ERRDET_OVR_EN, en ? 1 : 0); +} + +void dccg2_otg_add_pixel(struct dccg *dccg, + uint32_t otg_inst) +{ + struct dcn_dccg *dccg_dcn = TO_DCN_DCCG(dccg); + + REG_UPDATE_2(OTG_PIXEL_RATE_CNTL[otg_inst], + OTG_ADD_PIXEL[otg_inst], 0, + OTG_DROP_PIXEL[otg_inst], 0); + REG_UPDATE(OTG_PIXEL_RATE_CNTL[otg_inst], + OTG_ADD_PIXEL[otg_inst], 1); +} + +void dccg2_otg_drop_pixel(struct dccg *dccg, + uint32_t otg_inst) +{ + struct dcn_dccg *dccg_dcn = TO_DCN_DCCG(dccg); + + REG_UPDATE_2(OTG_PIXEL_RATE_CNTL[otg_inst], + OTG_ADD_PIXEL[otg_inst], 0, + OTG_DROP_PIXEL[otg_inst], 0); + REG_UPDATE(OTG_PIXEL_RATE_CNTL[otg_inst], + OTG_DROP_PIXEL[otg_inst], 1); +} + +void dccg2_init(struct dccg *dccg) +{ +} + +static const struct dccg_funcs dccg2_funcs = { + .update_dpp_dto = dccg2_update_dpp_dto, + .get_dccg_ref_freq = dccg2_get_dccg_ref_freq, + .set_fifo_errdet_ovr_en = dccg2_set_fifo_errdet_ovr_en, + .otg_add_pixel = dccg2_otg_add_pixel, + .otg_drop_pixel = dccg2_otg_drop_pixel, + .dccg_init = dccg2_init +}; + +struct dccg *dccg2_create( + struct dc_context *ctx, + const struct dccg_registers *regs, + const struct dccg_shift *dccg_shift, + const struct dccg_mask *dccg_mask) +{ + struct dcn_dccg *dccg_dcn = kzalloc(sizeof(*dccg_dcn), GFP_ATOMIC); + struct dccg *base; + + if (dccg_dcn == NULL) { + BREAK_TO_DEBUGGER(); + return NULL; + } + + base = &dccg_dcn->base; + base->ctx = ctx; + base->funcs = &dccg2_funcs; + + dccg_dcn->regs = regs; + dccg_dcn->dccg_shift = dccg_shift; + dccg_dcn->dccg_mask = dccg_mask; + + return &dccg_dcn->base; +} + +void dcn_dccg_destroy(struct dccg **dccg) +{ + struct dcn_dccg *dccg_dcn = TO_DCN_DCCG(*dccg); + + kfree(dccg_dcn); + *dccg = NULL; +} |