From: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Date: Thu, 24 May 2018 15:50:18 -0400
Subject: drm/amd/display: clean up dccg divider calc and dcn constructor
Git-commit: 472800a0a0c84e224a7d4d5a4cfcd8dd6a4dd2b1
Patch-mainline: v4.19-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166
No functional change.
Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
drivers/gpu/drm/amd/display/dc/dce/dce_clocks.c | 197 ++++++++----------------
drivers/gpu/drm/amd/display/dc/dce/dce_clocks.h | 26 ---
2 files changed, 68 insertions(+), 155 deletions(-)
--- a/drivers/gpu/drm/amd/display/dc/dce/dce_clocks.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_clocks.c
@@ -101,90 +101,42 @@ static const struct state_dependent_cloc
/*ClocksStatePerformance*/
{ .display_clk_khz = 1133000, .pixel_clk_khz = 600000 } };
-/* Starting point for each divider range.*/
-enum dce_divider_range_start {
- DIVIDER_RANGE_01_START = 200, /* 2.00*/
- DIVIDER_RANGE_02_START = 1600, /* 16.00*/
- DIVIDER_RANGE_03_START = 3200, /* 32.00*/
- DIVIDER_RANGE_SCALE_FACTOR = 100 /* Results are scaled up by 100.*/
+/* Starting DID for each range */
+enum dentist_base_divider_id {
+ dentist_base_divider_id_1 = 0x08,
+ dentist_base_divider_id_2 = 0x40,
+ dentist_base_divider_id_3 = 0x60,
+ dentist_max_divider_id = 0x80
};
-/* Ranges for divider identifiers (Divider ID or DID)
- mmDENTIST_DISPCLK_CNTL.DENTIST_DISPCLK_WDIVIDER*/
-enum dce_divider_id_register_setting {
- DIVIDER_RANGE_01_BASE_DIVIDER_ID = 0X08,
- DIVIDER_RANGE_02_BASE_DIVIDER_ID = 0X40,
- DIVIDER_RANGE_03_BASE_DIVIDER_ID = 0X60,
- DIVIDER_RANGE_MAX_DIVIDER_ID = 0X80
+/* Starting point and step size for each divider range.*/
+enum dentist_divider_range {
+ dentist_divider_range_1_start = 8, /* 2.00 */
+ dentist_divider_range_1_step = 1, /* 0.25 */
+ dentist_divider_range_2_start = 64, /* 16.00 */
+ dentist_divider_range_2_step = 2, /* 0.50 */
+ dentist_divider_range_3_start = 128, /* 32.00 */
+ dentist_divider_range_3_step = 4, /* 1.00 */
+ dentist_divider_range_scale_factor = 4
};
-/* Step size between each divider within a range.
- Incrementing the DENTIST_DISPCLK_WDIVIDER by one
- will increment the divider by this much.*/
-enum dce_divider_range_step_size {
- DIVIDER_RANGE_01_STEP_SIZE = 25, /* 0.25*/
- DIVIDER_RANGE_02_STEP_SIZE = 50, /* 0.50*/
- DIVIDER_RANGE_03_STEP_SIZE = 100 /* 1.00 */
-};
-
-static bool dce_divider_range_construct(
- struct dce_divider_range *div_range,
- int range_start,
- int range_step,
- int did_min,
- int did_max)
-{
- div_range->div_range_start = range_start;
- div_range->div_range_step = range_step;
- div_range->did_min = did_min;
- div_range->did_max = did_max;
-
- if (div_range->div_range_step == 0) {
- div_range->div_range_step = 1;
- /*div_range_step cannot be zero*/
- BREAK_TO_DEBUGGER();
- }
- /* Calculate this based on the other inputs.*/
- /* See DividerRange.h for explanation of */
- /* the relationship between divider id (DID) and a divider.*/
- /* Number of Divider IDs = (Maximum Divider ID - Minimum Divider ID)*/
- /* Maximum divider identified in this range =
- * (Number of Divider IDs)*Step size between dividers
- * + The start of this range.*/
- div_range->div_range_end = (did_max - did_min) * range_step
- + range_start;
- return true;
-}
-
-static int dce_divider_range_calc_divider(
- struct dce_divider_range *div_range,
- int did)
-{
- /* Is this DID within our range?*/
- if ((did < div_range->did_min) || (did >= div_range->did_max))
- return INVALID_DIVIDER;
-
- return ((did - div_range->did_min) * div_range->div_range_step)
- + div_range->div_range_start;
-
-}
-
-static int dce_divider_range_get_divider(
- struct dce_divider_range *div_range,
- int ranges_num,
- int did)
+static int dentist_get_divider_from_did(int did)
{
- int div = INVALID_DIVIDER;
- int i;
-
- for (i = 0; i < ranges_num; i++) {
- /* Calculate divider with given divider ID*/
- div = dce_divider_range_calc_divider(&div_range[i], did);
- /* Found a valid return divider*/
- if (div != INVALID_DIVIDER)
- break;
+ if (did < dentist_base_divider_id_1)
+ did = dentist_base_divider_id_1;
+ if (did > dentist_max_divider_id)
+ did = dentist_max_divider_id;
+
+ if (did < dentist_base_divider_id_2) {
+ return dentist_divider_range_1_start + dentist_divider_range_1_step
+ * (did - dentist_base_divider_id_1);
+ } else if (did < dentist_base_divider_id_3) {
+ return dentist_divider_range_2_start + dentist_divider_range_2_step
+ * (did - dentist_base_divider_id_2);
+ } else {
+ return dentist_divider_range_3_start + dentist_divider_range_3_step
+ * (did - dentist_base_divider_id_3);
}
- return div;
}
static int dce_clocks_get_dp_ref_freq(struct dccg *clk)
@@ -193,7 +145,7 @@ static int dce_clocks_get_dp_ref_freq(st
int dprefclk_wdivider;
int dprefclk_src_sel;
int dp_ref_clk_khz = 600000;
- int target_div = INVALID_DIVIDER;
+ int target_div;
/* ASSERT DP Reference Clock source is from DFS*/
REG_GET(DPREFCLK_CNTL, DPREFCLK_SRC_SEL, &dprefclk_src_sel);
@@ -204,16 +156,11 @@ static int dce_clocks_get_dp_ref_freq(st
REG_GET(DENTIST_DISPCLK_CNTL, DENTIST_DPREFCLK_WDIVIDER, &dprefclk_wdivider);
/* Convert DENTIST_DPREFCLK_WDIVIDERto actual divider*/
- target_div = dce_divider_range_get_divider(
- clk_dce->divider_ranges,
- DIVIDER_RANGE_MAX,
- dprefclk_wdivider);
-
- if (target_div != INVALID_DIVIDER) {
- /* Calculate the current DFS clock, in kHz.*/
- dp_ref_clk_khz = (DIVIDER_RANGE_SCALE_FACTOR
- * clk_dce->dentist_vco_freq_khz) / target_div;
- }
+ target_div = dentist_get_divider_from_did(dprefclk_wdivider);
+
+ /* Calculate the current DFS clock, in kHz.*/
+ dp_ref_clk_khz = (dentist_divider_range_scale_factor
+ * clk_dce->dentist_vco_freq_khz) / target_div;
/* SW will adjust DP REF Clock average value for all purposes
* (DP DTO / DP Audio DTO and DP GTC)
@@ -229,17 +176,12 @@ static int dce_clocks_get_dp_ref_freq(st
*/
if (clk_dce->ss_on_dprefclk && clk_dce->dprefclk_ss_divider != 0) {
struct fixed31_32 ss_percentage = dc_fixpt_div_int(
- dc_fixpt_from_fraction(
- clk_dce->dprefclk_ss_percentage,
- clk_dce->dprefclk_ss_divider), 200);
+ dc_fixpt_from_fraction(clk_dce->dprefclk_ss_percentage,
+ clk_dce->dprefclk_ss_divider), 200);
struct fixed31_32 adj_dp_ref_clk_khz;
- ss_percentage = dc_fixpt_sub(dc_fixpt_one,
- ss_percentage);
- adj_dp_ref_clk_khz =
- dc_fixpt_mul_int(
- ss_percentage,
- dp_ref_clk_khz);
+ ss_percentage = dc_fixpt_sub(dc_fixpt_one, ss_percentage);
+ adj_dp_ref_clk_khz = dc_fixpt_mul_int(ss_percentage, dp_ref_clk_khz);
dp_ref_clk_khz = dc_fixpt_floor(adj_dp_ref_clk_khz);
}
@@ -257,17 +199,12 @@ static int dce_clocks_get_dp_ref_freq_wr
if (clk_dce->ss_on_dprefclk && clk_dce->dprefclk_ss_divider != 0) {
struct fixed31_32 ss_percentage = dc_fixpt_div_int(
- dc_fixpt_from_fraction(
- clk_dce->dprefclk_ss_percentage,
+ dc_fixpt_from_fraction(clk_dce->dprefclk_ss_percentage,
clk_dce->dprefclk_ss_divider), 200);
struct fixed31_32 adj_dp_ref_clk_khz;
- ss_percentage = dc_fixpt_sub(dc_fixpt_one,
- ss_percentage);
- adj_dp_ref_clk_khz =
- dc_fixpt_mul_int(
- ss_percentage,
- dp_ref_clk_khz);
+ ss_percentage = dc_fixpt_sub(dc_fixpt_one, ss_percentage);
+ adj_dp_ref_clk_khz = dc_fixpt_mul_int(ss_percentage, dp_ref_clk_khz);
dp_ref_clk_khz = dc_fixpt_floor(adj_dp_ref_clk_khz);
}
@@ -804,25 +741,6 @@ static void dce_dccg_construct(
dce_clock_read_integrated_info(clk_dce);
dce_clock_read_ss_info(clk_dce);
-
- dce_divider_range_construct(
- &clk_dce->divider_ranges[DIVIDER_RANGE_01],
- DIVIDER_RANGE_01_START,
- DIVIDER_RANGE_01_STEP_SIZE,
- DIVIDER_RANGE_01_BASE_DIVIDER_ID,
- DIVIDER_RANGE_02_BASE_DIVIDER_ID);
- dce_divider_range_construct(
- &clk_dce->divider_ranges[DIVIDER_RANGE_02],
- DIVIDER_RANGE_02_START,
- DIVIDER_RANGE_02_STEP_SIZE,
- DIVIDER_RANGE_02_BASE_DIVIDER_ID,
- DIVIDER_RANGE_03_BASE_DIVIDER_ID);
- dce_divider_range_construct(
- &clk_dce->divider_ranges[DIVIDER_RANGE_03],
- DIVIDER_RANGE_03_START,
- DIVIDER_RANGE_03_STEP_SIZE,
- DIVIDER_RANGE_03_BASE_DIVIDER_ID,
- DIVIDER_RANGE_MAX_DIVIDER_ID);
}
struct dccg *dce_dccg_create(
@@ -921,6 +839,9 @@ struct dccg *dce120_dccg_create(struct d
struct dccg *dcn1_dccg_create(struct dc_context *ctx)
{
+ struct dc_debug *debug = &ctx->dc->debug;
+ struct dc_bios *bp = ctx->dc_bios;
+ struct dc_firmware_info fw_info = { { 0 } };
struct dce_dccg *clk_dce = kzalloc(sizeof(*clk_dce), GFP_KERNEL);
if (clk_dce == NULL) {
@@ -928,12 +849,30 @@ struct dccg *dcn1_dccg_create(struct dc_
return NULL;
}
- /* TODO strip out useful stuff out of dce constructor */
- dce_dccg_construct(
- clk_dce, ctx, NULL, NULL, NULL);
-
+ clk_dce->base.ctx = ctx;
clk_dce->base.funcs = &dcn1_funcs;
+ clk_dce->dfs_bypass_disp_clk = 0;
+
+ clk_dce->dprefclk_ss_percentage = 0;
+ clk_dce->dprefclk_ss_divider = 1000;
+ clk_dce->ss_on_dprefclk = false;
+
+ if (bp->integrated_info)
+ clk_dce->dentist_vco_freq_khz = bp->integrated_info->dentist_vco_freq;
+ if (clk_dce->dentist_vco_freq_khz == 0) {
+ bp->funcs->get_firmware_info(bp, &fw_info);
+ clk_dce->dentist_vco_freq_khz = fw_info.smu_gpu_pll_output_freq;
+ if (clk_dce->dentist_vco_freq_khz == 0)
+ clk_dce->dentist_vco_freq_khz = 3600000;
+ }
+
+ if (!debug->disable_dfs_bypass && bp->integrated_info)
+ if (bp->integrated_info->gpu_cap_info & DFS_BYPASS_ENABLE)
+ clk_dce->dfs_bypass_enabled = true;
+
+ dce_clock_read_ss_info(clk_dce);
+
return &clk_dce->base;
}
--- a/drivers/gpu/drm/amd/display/dc/dce/dce_clocks.h
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_clocks.h
@@ -57,31 +57,6 @@ struct dce_disp_clk_registers {
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_dccg {
struct dccg base;
const struct dce_disp_clk_registers *regs;
@@ -89,7 +64,6 @@ struct dce_dccg {
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];
int dentist_vco_freq_khz;