diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/optc/dcn20/dcn20_optc.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/optc/dcn20/dcn20_optc.c | 587 |
1 files changed, 587 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/optc/dcn20/dcn20_optc.c b/drivers/gpu/drm/amd/display/dc/optc/dcn20/dcn20_optc.c new file mode 100644 index 000000000000..58bdbd859bf9 --- /dev/null +++ b/drivers/gpu/drm/amd/display/dc/optc/dcn20/dcn20_optc.c @@ -0,0 +1,587 @@ +/* + * Copyright 2012-15 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 "reg_helper.h" +#include "dcn20_optc.h" +#include "dc.h" + +#define REG(reg)\ + optc1->tg_regs->reg + +#define CTX \ + optc1->base.ctx + +#undef FN +#define FN(reg_name, field_name) \ + optc1->tg_shift->field_name, optc1->tg_mask->field_name + +/** + * optc2_enable_crtc() - Enable CRTC - call ASIC Control Object to enable Timing generator. + * + * @optc: timing_generator instance. + * + * Return: If CRTC is enabled, return true. + * + */ +bool optc2_enable_crtc(struct timing_generator *optc) +{ + /* TODO FPGA wait for answer + * OTG_MASTER_UPDATE_MODE != CRTC_MASTER_UPDATE_MODE + * OTG_MASTER_UPDATE_LOCK != CRTC_MASTER_UPDATE_LOCK + */ + struct optc *optc1 = DCN10TG_FROM_TG(optc); + + /* opp instance for OTG. For DCN1.0, ODM is remoed. + * OPP and OPTC should 1:1 mapping + */ + REG_UPDATE(OPTC_DATA_SOURCE_SELECT, + OPTC_SEG0_SRC_SEL, optc->inst); + + /* VTG enable first is for HW workaround */ + REG_UPDATE(CONTROL, + VTG0_ENABLE, 1); + + REG_SEQ_START(); + + /* Enable CRTC */ + REG_UPDATE_2(OTG_CONTROL, + OTG_DISABLE_POINT_CNTL, 3, + OTG_MASTER_EN, 1); + + REG_SEQ_SUBMIT(); + REG_SEQ_WAIT_DONE(); + + return true; +} + +/** + * optc2_set_gsl() - Assign OTG to GSL groups, + * set one of the OTGs to be master & rest are slaves + * + * @optc: timing_generator instance. + * @params: pointer to gsl_params + */ +void optc2_set_gsl(struct timing_generator *optc, + const struct gsl_params *params) +{ + struct optc *optc1 = DCN10TG_FROM_TG(optc); + +/* + * There are (MAX_OPTC+1)/2 gsl groups available for use. + * In each group (assign an OTG to a group by setting OTG_GSLX_EN = 1, + * set one of the OTGs to be the master (OTG_GSL_MASTER_EN = 1) and the rest are slaves. + */ + REG_UPDATE_5(OTG_GSL_CONTROL, + OTG_GSL0_EN, params->gsl0_en, + OTG_GSL1_EN, params->gsl1_en, + OTG_GSL2_EN, params->gsl2_en, + OTG_GSL_MASTER_EN, params->gsl_master_en, + OTG_GSL_MASTER_MODE, params->gsl_master_mode); +} + + +void optc2_set_gsl_source_select( + struct timing_generator *optc, + int group_idx, + uint32_t gsl_ready_signal) +{ + struct optc *optc1 = DCN10TG_FROM_TG(optc); + + switch (group_idx) { + case 1: + REG_UPDATE(GSL_SOURCE_SELECT, GSL0_READY_SOURCE_SEL, gsl_ready_signal); + break; + case 2: + REG_UPDATE(GSL_SOURCE_SELECT, GSL1_READY_SOURCE_SEL, gsl_ready_signal); + break; + case 3: + REG_UPDATE(GSL_SOURCE_SELECT, GSL2_READY_SOURCE_SEL, gsl_ready_signal); + break; + default: + break; + } +} + +/* Set DSC-related configuration. + * dsc_mode: 0 disables DSC, other values enable DSC in specified format + * sc_bytes_per_pixel: Bytes per pixel in u3.28 format + * dsc_slice_width: Slice width in pixels + */ +void optc2_set_dsc_config(struct timing_generator *optc, + enum optc_dsc_mode dsc_mode, + uint32_t dsc_bytes_per_pixel, + uint32_t dsc_slice_width) +{ + struct optc *optc1 = DCN10TG_FROM_TG(optc); + + REG_UPDATE(OPTC_DATA_FORMAT_CONTROL, + OPTC_DSC_MODE, dsc_mode); + + REG_SET(OPTC_BYTES_PER_PIXEL, 0, + OPTC_DSC_BYTES_PER_PIXEL, dsc_bytes_per_pixel); + + REG_UPDATE(OPTC_WIDTH_CONTROL, + OPTC_DSC_SLICE_WIDTH, dsc_slice_width); +} + +/* Get DSC-related configuration. + * dsc_mode: 0 disables DSC, other values enable DSC in specified format + */ +void optc2_get_dsc_status(struct timing_generator *optc, + uint32_t *dsc_mode) +{ + struct optc *optc1 = DCN10TG_FROM_TG(optc); + + REG_GET(OPTC_DATA_FORMAT_CONTROL, + OPTC_DSC_MODE, dsc_mode); +} + + +/*TEMP: Need to figure out inheritance model here.*/ +bool optc2_is_two_pixels_per_containter(const struct dc_crtc_timing *timing) +{ + return optc1_is_two_pixels_per_containter(timing); +} + +void optc2_set_odm_bypass(struct timing_generator *optc, + const struct dc_crtc_timing *dc_crtc_timing) +{ + struct optc *optc1 = DCN10TG_FROM_TG(optc); + uint32_t h_div_2 = 0; + + REG_SET_3(OPTC_DATA_SOURCE_SELECT, 0, + OPTC_NUM_OF_INPUT_SEGMENT, 0, + OPTC_SEG0_SRC_SEL, optc->inst, + OPTC_SEG1_SRC_SEL, 0xf); + REG_WRITE(OTG_H_TIMING_CNTL, 0); + + h_div_2 = optc2_is_two_pixels_per_containter(dc_crtc_timing); + REG_UPDATE(OTG_H_TIMING_CNTL, + OTG_H_TIMING_DIV_BY2, h_div_2); + REG_SET(OPTC_MEMORY_CONFIG, 0, + OPTC_MEM_SEL, 0); + optc1->opp_count = 1; +} + +void optc2_set_odm_combine(struct timing_generator *optc, int *opp_id, int opp_cnt, + struct dc_crtc_timing *timing) +{ + struct optc *optc1 = DCN10TG_FROM_TG(optc); + int mpcc_hactive = (timing->h_addressable + timing->h_border_left + timing->h_border_right) + / opp_cnt; + uint32_t memory_mask; + + ASSERT(opp_cnt == 2); + + /* TODO: In pseudocode but does not affect maximus, delete comment if we dont need on asic + * REG_SET(OTG_GLOBAL_CONTROL2, 0, GLOBAL_UPDATE_LOCK_EN, 1); + * Program OTG register MASTER_UPDATE_LOCK_DB_X/Y to the position before DP frame start + * REG_SET_2(OTG_GLOBAL_CONTROL1, 0, + * MASTER_UPDATE_LOCK_DB_X, 160, + * MASTER_UPDATE_LOCK_DB_Y, 240); + */ + + /* 2 pieces of memory required for up to 5120 displays, 4 for up to 8192, + * however, for ODM combine we can simplify by always using 4. + * To make sure there's no overlap, each instance "reserves" 2 memories and + * they are uniquely combined here. + */ + memory_mask = 0x3 << (opp_id[0] * 2) | 0x3 << (opp_id[1] * 2); + + if (REG(OPTC_MEMORY_CONFIG)) + REG_SET(OPTC_MEMORY_CONFIG, 0, + OPTC_MEM_SEL, memory_mask); + + REG_SET_3(OPTC_DATA_SOURCE_SELECT, 0, + OPTC_NUM_OF_INPUT_SEGMENT, 1, + OPTC_SEG0_SRC_SEL, opp_id[0], + OPTC_SEG1_SRC_SEL, opp_id[1]); + + REG_UPDATE(OPTC_WIDTH_CONTROL, + OPTC_SEGMENT_WIDTH, mpcc_hactive); + + REG_SET(OTG_H_TIMING_CNTL, 0, OTG_H_TIMING_DIV_BY2, 1); + optc1->opp_count = opp_cnt; +} + +void optc2_get_optc_source(struct timing_generator *optc, + uint32_t *num_of_src_opp, + uint32_t *src_opp_id_0, + uint32_t *src_opp_id_1) +{ + uint32_t num_of_input_segments; + struct optc *optc1 = DCN10TG_FROM_TG(optc); + + REG_GET_3(OPTC_DATA_SOURCE_SELECT, + OPTC_NUM_OF_INPUT_SEGMENT, &num_of_input_segments, + OPTC_SEG0_SRC_SEL, src_opp_id_0, + OPTC_SEG1_SRC_SEL, src_opp_id_1); + + if (num_of_input_segments == 1) + *num_of_src_opp = 2; + else + *num_of_src_opp = 1; + + /* Work around VBIOS not updating OPTC_NUM_OF_INPUT_SEGMENT */ + if (*src_opp_id_1 == 0xf) + *num_of_src_opp = 1; +} + +static void optc2_set_dwb_source(struct timing_generator *optc, + uint32_t dwb_pipe_inst) +{ + struct optc *optc1 = DCN10TG_FROM_TG(optc); + + if (dwb_pipe_inst == 0) + REG_UPDATE(DWB_SOURCE_SELECT, + OPTC_DWB0_SOURCE_SELECT, optc->inst); + else if (dwb_pipe_inst == 1) + REG_UPDATE(DWB_SOURCE_SELECT, + OPTC_DWB1_SOURCE_SELECT, optc->inst); +} + +static void optc2_align_vblanks( + struct timing_generator *optc_master, + struct timing_generator *optc_slave, + uint32_t master_pixel_clock_100Hz, + uint32_t slave_pixel_clock_100Hz, + uint8_t master_clock_divider, + uint8_t slave_clock_divider) +{ + /* accessing slave OTG registers */ + struct optc *optc1 = DCN10TG_FROM_TG(optc_slave); + + uint32_t master_v_active = 0; + uint32_t master_h_total = 0; + uint32_t slave_h_total = 0; + uint64_t L, XY; + uint32_t X, Y, p = 10000; + uint32_t master_update_lock; + + /* disable slave OTG */ + REG_UPDATE(OTG_CONTROL, OTG_MASTER_EN, 0); + /* wait until disabled */ + REG_WAIT(OTG_CONTROL, + OTG_CURRENT_MASTER_EN_STATE, + 0, 10, 5000); + + REG_GET(OTG_H_TOTAL, OTG_H_TOTAL, &slave_h_total); + + /* assign slave OTG to be controlled by master update lock */ + REG_SET(OTG_GLOBAL_CONTROL0, 0, + OTG_MASTER_UPDATE_LOCK_SEL, optc_master->inst); + + /* accessing master OTG registers */ + optc1 = DCN10TG_FROM_TG(optc_master); + + /* saving update lock state, not sure if it's needed */ + REG_GET(OTG_MASTER_UPDATE_LOCK, + OTG_MASTER_UPDATE_LOCK, &master_update_lock); + /* unlocking master OTG */ + REG_SET(OTG_MASTER_UPDATE_LOCK, 0, + OTG_MASTER_UPDATE_LOCK, 0); + + REG_GET(OTG_V_BLANK_START_END, + OTG_V_BLANK_START, &master_v_active); + REG_GET(OTG_H_TOTAL, OTG_H_TOTAL, &master_h_total); + + /* calculate when to enable slave OTG */ + L = (uint64_t)p * slave_h_total * master_pixel_clock_100Hz; + L = div_u64(L, master_h_total); + L = div_u64(L, slave_pixel_clock_100Hz); + XY = div_u64(L, p); + Y = master_v_active - XY - 1; + X = div_u64(((XY + 1) * p - L) * master_h_total, p * master_clock_divider); + + /* + * set master OTG to unlock when V/H + * counters reach calculated values + */ + REG_UPDATE(OTG_GLOBAL_CONTROL1, + MASTER_UPDATE_LOCK_DB_EN, 1); + REG_UPDATE_2(OTG_GLOBAL_CONTROL1, + MASTER_UPDATE_LOCK_DB_X, + X, + MASTER_UPDATE_LOCK_DB_Y, + Y); + + /* lock master OTG */ + REG_SET(OTG_MASTER_UPDATE_LOCK, 0, + OTG_MASTER_UPDATE_LOCK, 1); + REG_WAIT(OTG_MASTER_UPDATE_LOCK, + UPDATE_LOCK_STATUS, 1, 1, 10); + + /* accessing slave OTG registers */ + optc1 = DCN10TG_FROM_TG(optc_slave); + + /* + * enable slave OTG, the OTG is locked with + * master's update lock, so it will not run + */ + REG_UPDATE(OTG_CONTROL, + OTG_MASTER_EN, 1); + + /* accessing master OTG registers */ + optc1 = DCN10TG_FROM_TG(optc_master); + + /* + * unlock master OTG. When master H/V counters reach + * DB_XY point, slave OTG will start + */ + REG_SET(OTG_MASTER_UPDATE_LOCK, 0, + OTG_MASTER_UPDATE_LOCK, 0); + + /* accessing slave OTG registers */ + optc1 = DCN10TG_FROM_TG(optc_slave); + + /* wait for slave OTG to start running*/ + REG_WAIT(OTG_CONTROL, + OTG_CURRENT_MASTER_EN_STATE, + 1, 10, 5000); + + /* accessing master OTG registers */ + optc1 = DCN10TG_FROM_TG(optc_master); + + /* disable the XY point*/ + REG_UPDATE(OTG_GLOBAL_CONTROL1, + MASTER_UPDATE_LOCK_DB_EN, 0); + REG_UPDATE_2(OTG_GLOBAL_CONTROL1, + MASTER_UPDATE_LOCK_DB_X, + 0, + MASTER_UPDATE_LOCK_DB_Y, + 0); + + /*restore master update lock*/ + REG_SET(OTG_MASTER_UPDATE_LOCK, 0, + OTG_MASTER_UPDATE_LOCK, master_update_lock); + + /* accessing slave OTG registers */ + optc1 = DCN10TG_FROM_TG(optc_slave); + /* restore slave to be controlled by it's own */ + REG_SET(OTG_GLOBAL_CONTROL0, 0, + OTG_MASTER_UPDATE_LOCK_SEL, optc_slave->inst); + +} + +void optc2_triplebuffer_lock(struct timing_generator *optc) +{ + struct optc *optc1 = DCN10TG_FROM_TG(optc); + + REG_SET(OTG_GLOBAL_CONTROL0, 0, + OTG_MASTER_UPDATE_LOCK_SEL, optc->inst); + + REG_SET(OTG_VUPDATE_KEEPOUT, 0, + OTG_MASTER_UPDATE_LOCK_VUPDATE_KEEPOUT_EN, 1); + + REG_SET(OTG_MASTER_UPDATE_LOCK, 0, + OTG_MASTER_UPDATE_LOCK, 1); + + REG_WAIT(OTG_MASTER_UPDATE_LOCK, + UPDATE_LOCK_STATUS, 1, + 1, 10); +} + +void optc2_triplebuffer_unlock(struct timing_generator *optc) +{ + struct optc *optc1 = DCN10TG_FROM_TG(optc); + + REG_SET(OTG_MASTER_UPDATE_LOCK, 0, + OTG_MASTER_UPDATE_LOCK, 0); + + REG_SET(OTG_VUPDATE_KEEPOUT, 0, + OTG_MASTER_UPDATE_LOCK_VUPDATE_KEEPOUT_EN, 0); + +} + +void optc2_lock_doublebuffer_enable(struct timing_generator *optc) +{ + struct optc *optc1 = DCN10TG_FROM_TG(optc); + uint32_t v_blank_start = 0; + uint32_t h_blank_start = 0; + + REG_UPDATE(OTG_GLOBAL_CONTROL1, MASTER_UPDATE_LOCK_DB_EN, 1); + + REG_UPDATE_2(OTG_GLOBAL_CONTROL2, GLOBAL_UPDATE_LOCK_EN, 1, + DIG_UPDATE_LOCATION, 20); + + REG_GET(OTG_V_BLANK_START_END, OTG_V_BLANK_START, &v_blank_start); + + REG_GET(OTG_H_BLANK_START_END, OTG_H_BLANK_START, &h_blank_start); + + REG_UPDATE_2(OTG_GLOBAL_CONTROL1, + MASTER_UPDATE_LOCK_DB_X, + (h_blank_start - 200 - 1) / optc1->opp_count, + MASTER_UPDATE_LOCK_DB_Y, + v_blank_start - 1); + + REG_SET_3(OTG_VUPDATE_KEEPOUT, 0, + MASTER_UPDATE_LOCK_VUPDATE_KEEPOUT_START_OFFSET, 0, + MASTER_UPDATE_LOCK_VUPDATE_KEEPOUT_END_OFFSET, 100, + OTG_MASTER_UPDATE_LOCK_VUPDATE_KEEPOUT_EN, 1); +} + +void optc2_lock_doublebuffer_disable(struct timing_generator *optc) +{ + struct optc *optc1 = DCN10TG_FROM_TG(optc); + + REG_UPDATE_2(OTG_GLOBAL_CONTROL1, + MASTER_UPDATE_LOCK_DB_X, + 0, + MASTER_UPDATE_LOCK_DB_Y, + 0); + + REG_UPDATE_2(OTG_GLOBAL_CONTROL2, GLOBAL_UPDATE_LOCK_EN, 0, + DIG_UPDATE_LOCATION, 0); + + REG_UPDATE(OTG_GLOBAL_CONTROL1, MASTER_UPDATE_LOCK_DB_EN, 0); +} + +void optc2_setup_manual_trigger(struct timing_generator *optc) +{ + struct optc *optc1 = DCN10TG_FROM_TG(optc); + + /* Set the min/max selectors unconditionally so that + * DMCUB fw may change OTG timings when necessary + * TODO: Remove the w/a after fixing the issue in DMCUB firmware + */ + REG_UPDATE_4(OTG_V_TOTAL_CONTROL, + OTG_V_TOTAL_MIN_SEL, 1, + OTG_V_TOTAL_MAX_SEL, 1, + OTG_FORCE_LOCK_ON_EVENT, 0, + OTG_SET_V_TOTAL_MIN_MASK, (1 << 1)); /* TRIGA */ + + REG_SET_8(OTG_TRIGA_CNTL, 0, + OTG_TRIGA_SOURCE_SELECT, 21, + OTG_TRIGA_SOURCE_PIPE_SELECT, optc->inst, + OTG_TRIGA_RISING_EDGE_DETECT_CNTL, 1, + OTG_TRIGA_FALLING_EDGE_DETECT_CNTL, 0, + OTG_TRIGA_POLARITY_SELECT, 0, + OTG_TRIGA_FREQUENCY_SELECT, 0, + OTG_TRIGA_DELAY, 0, + OTG_TRIGA_CLEAR, 1); +} + +void optc2_program_manual_trigger(struct timing_generator *optc) +{ + struct optc *optc1 = DCN10TG_FROM_TG(optc); + + REG_SET(OTG_TRIGA_MANUAL_TRIG, 0, + OTG_TRIGA_MANUAL_TRIG, 1); +} + +bool optc2_configure_crc(struct timing_generator *optc, + const struct crc_params *params) +{ + struct optc *optc1 = DCN10TG_FROM_TG(optc); + + REG_SET_2(OTG_CRC_CNTL2, 0, + OTG_CRC_DSC_MODE, params->dsc_mode, + OTG_CRC_DATA_STREAM_COMBINE_MODE, params->odm_mode); + + return optc1_configure_crc(optc, params); +} + + +void optc2_get_last_used_drr_vtotal(struct timing_generator *optc, uint32_t *refresh_rate) +{ + struct optc *optc1 = DCN10TG_FROM_TG(optc); + + REG_GET(OTG_DRR_CONTROL, OTG_V_TOTAL_LAST_USED_BY_DRR, refresh_rate); +} + +static struct timing_generator_funcs dcn20_tg_funcs = { + .validate_timing = optc1_validate_timing, + .program_timing = optc1_program_timing, + .setup_vertical_interrupt0 = optc1_setup_vertical_interrupt0, + .setup_vertical_interrupt1 = optc1_setup_vertical_interrupt1, + .setup_vertical_interrupt2 = optc1_setup_vertical_interrupt2, + .program_global_sync = optc1_program_global_sync, + .enable_crtc = optc2_enable_crtc, + .disable_crtc = optc1_disable_crtc, + /* used by enable_timing_synchronization. Not need for FPGA */ + .is_counter_moving = optc1_is_counter_moving, + .get_position = optc1_get_position, + .get_frame_count = optc1_get_vblank_counter, + .get_scanoutpos = optc1_get_crtc_scanoutpos, + .get_otg_active_size = optc1_get_otg_active_size, + .set_early_control = optc1_set_early_control, + /* used by enable_timing_synchronization. Not need for FPGA */ + .wait_for_state = optc1_wait_for_state, + .set_blank = optc1_set_blank, + .is_blanked = optc1_is_blanked, + .set_blank_color = optc1_program_blank_color, + .enable_reset_trigger = optc1_enable_reset_trigger, + .enable_crtc_reset = optc1_enable_crtc_reset, + .did_triggered_reset_occur = optc1_did_triggered_reset_occur, + .triplebuffer_lock = optc2_triplebuffer_lock, + .triplebuffer_unlock = optc2_triplebuffer_unlock, + .disable_reset_trigger = optc1_disable_reset_trigger, + .lock = optc1_lock, + .unlock = optc1_unlock, + .lock_doublebuffer_enable = optc2_lock_doublebuffer_enable, + .lock_doublebuffer_disable = optc2_lock_doublebuffer_disable, + .enable_optc_clock = optc1_enable_optc_clock, + .set_drr = optc1_set_drr, + .get_last_used_drr_vtotal = optc2_get_last_used_drr_vtotal, + .set_vtotal_min_max = optc1_set_vtotal_min_max, + .set_static_screen_control = optc1_set_static_screen_control, + .program_stereo = optc1_program_stereo, + .is_stereo_left_eye = optc1_is_stereo_left_eye, + .set_blank_data_double_buffer = optc1_set_blank_data_double_buffer, + .tg_init = optc1_tg_init, + .is_tg_enabled = optc1_is_tg_enabled, + .is_optc_underflow_occurred = optc1_is_optc_underflow_occurred, + .clear_optc_underflow = optc1_clear_optc_underflow, + .setup_global_swap_lock = NULL, + .get_crc = optc1_get_crc, + .configure_crc = optc2_configure_crc, + .set_dsc_config = optc2_set_dsc_config, + .get_dsc_status = optc2_get_dsc_status, + .set_dwb_source = optc2_set_dwb_source, + .set_odm_bypass = optc2_set_odm_bypass, + .set_odm_combine = optc2_set_odm_combine, + .get_optc_source = optc2_get_optc_source, + .set_gsl = optc2_set_gsl, + .set_gsl_source_select = optc2_set_gsl_source_select, + .set_vtg_params = optc1_set_vtg_params, + .program_manual_trigger = optc2_program_manual_trigger, + .setup_manual_trigger = optc2_setup_manual_trigger, + .get_hw_timing = optc1_get_hw_timing, + .align_vblanks = optc2_align_vblanks, +}; + +void dcn20_timing_generator_init(struct optc *optc1) +{ + optc1->base.funcs = &dcn20_tg_funcs; + + optc1->max_h_total = optc1->tg_mask->OTG_H_TOTAL + 1; + optc1->max_v_total = optc1->tg_mask->OTG_V_TOTAL + 1; + + optc1->min_h_blank = 32; + optc1->min_v_blank = 3; + optc1->min_v_blank_interlace = 5; + optc1->min_h_sync_width = 4;// Minimum HSYNC = 8 pixels asked By HW in the first place for no actual reason. Oculus Rift S will not light up with 8 as it's hsyncWidth is 6. Changing it to 4 to fix that issue. + optc1->min_v_sync_width = 1; +} |