diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dce/dce_clocks.h')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dce/dce_clocks.h | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_clocks.h b/drivers/gpu/drm/amd/display/dc/dce/dce_clocks.h new file mode 100644 index 000000000000..0e717e0dc8f0 --- /dev/null +++ b/drivers/gpu/drm/amd/display/dc/dce/dce_clocks.h @@ -0,0 +1,137 @@ +/* + * Copyright 2012-16 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 + * + */ + + +#ifndef _DCE_CLOCKS_H_ +#define _DCE_CLOCKS_H_ + +#include "display_clock.h" + +#define CLK_COMMON_REG_LIST_DCE_BASE() \ + .DPREFCLK_CNTL = mmDPREFCLK_CNTL, \ + .DENTIST_DISPCLK_CNTL = mmDENTIST_DISPCLK_CNTL + +#define CLK_SF(reg_name, field_name, post_fix)\ + .field_name = reg_name ## __ ## field_name ## post_fix + +#define CLK_COMMON_MASK_SH_LIST_DCE_COMMON_BASE(mask_sh) \ + CLK_SF(DPREFCLK_CNTL, DPREFCLK_SRC_SEL, mask_sh), \ + CLK_SF(DENTIST_DISPCLK_CNTL, DENTIST_DPREFCLK_WDIVIDER, mask_sh) + +#define CLK_REG_FIELD_LIST(type) \ + type DPREFCLK_SRC_SEL; \ + type DENTIST_DPREFCLK_WDIVIDER; + +struct dce_disp_clk_shift { + CLK_REG_FIELD_LIST(uint8_t) +}; + +struct dce_disp_clk_mask { + CLK_REG_FIELD_LIST(uint32_t) +}; + +struct dce_disp_clk_registers { + uint32_t DPREFCLK_CNTL; + uint32_t DENTIST_DISPCLK_CNTL; +}; + +/* Array identifiers and count for the divider ranges.*/ +enum dce_divider_range_count { + DIVIDER_RANGE_01 = 0, + DIVIDER_RANGE_02, + DIVIDER_RANGE_03, + DIVIDER_RANGE_MAX /* == 3*/ +}; + +enum dce_divider_error_types { + INVALID_DID = 0, + INVALID_DIVIDER = 1 +}; + +struct dce_divider_range { + int div_range_start; + /* The end of this range of dividers.*/ + int div_range_end; + /* The distance between each divider in this range.*/ + int div_range_step; + /* The divider id for the lowest divider.*/ + int did_min; + /* The divider id for the highest divider.*/ + int did_max; +}; + +struct dce_disp_clk { + struct display_clock base; + const struct dce_disp_clk_registers *regs; + const struct dce_disp_clk_shift *clk_shift; + const struct dce_disp_clk_mask *clk_mask; + + struct state_dependent_clocks max_clks_by_state[DM_PP_CLOCKS_MAX_STATES]; + struct dce_divider_range divider_ranges[DIVIDER_RANGE_MAX]; + + bool use_max_disp_clk; + int dentist_vco_freq_khz; + + /* Cache the status of DFS-bypass feature*/ + bool dfs_bypass_enabled; + /* Cache the display clock returned by VBIOS if DFS-bypass is enabled. + * This is basically "Crystal Frequency In KHz" (XTALIN) frequency */ + int dfs_bypass_disp_clk; + + /* Flag for Enabled SS on DPREFCLK */ + bool ss_on_dprefclk; + /* DPREFCLK SS percentage (if down-spread enabled) */ + int dprefclk_ss_percentage; + /* DPREFCLK SS percentage Divider (100 or 1000) */ + int dprefclk_ss_divider; + + /* max disp_clk from PPLIB for max validation display clock*/ + int max_displ_clk_in_khz; +}; + + +struct display_clock *dce_disp_clk_create( + struct dc_context *ctx, + const struct dce_disp_clk_registers *regs, + const struct dce_disp_clk_shift *clk_shift, + const struct dce_disp_clk_mask *clk_mask); + +struct display_clock *dce110_disp_clk_create( + struct dc_context *ctx, + const struct dce_disp_clk_registers *regs, + const struct dce_disp_clk_shift *clk_shift, + const struct dce_disp_clk_mask *clk_mask); + +struct display_clock *dce112_disp_clk_create( + struct dc_context *ctx, + const struct dce_disp_clk_registers *regs, + const struct dce_disp_clk_shift *clk_shift, + const struct dce_disp_clk_mask *clk_mask); + +struct display_clock *dce120_disp_clk_create(struct dc_context *ctx); + +void dce_disp_clk_destroy(struct display_clock **disp_clk); + +#endif /* _DCE_CLOCKS_H_ */ |