From a06370edff72f2ef9cb1b3c73701f53deaf7756d Mon Sep 17 00:00:00 2001 From: Xiaomeng Hou Date: Sun, 7 Mar 2021 17:30:06 +0800 Subject: [PATCH] drm/amd/pm: add callback force_clk_levels for yellow carp Implement the sysfs API to set a range of allowed DPM levels for specific clock domain. v2: return error directly if the specified clock type not supported Acked-by: Huang Rui Signed-off-by: Xiaomeng Hou Reviewed-by: Kevin Wang Reviewed-by: Lijo Lazar Signed-off-by: Alex Deucher --- .../gpu/drm/amd/pm/swsmu/smu13/yellow_carp_ppt.c | 114 +++++++++++++++++++++ 1 file changed, 114 insertions(+) diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu13/yellow_carp_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu13/yellow_carp_ppt.c index feef77c31d56..8e09811f56ee 100644 --- a/drivers/gpu/drm/amd/pm/swsmu/smu13/yellow_carp_ppt.c +++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/yellow_carp_ppt.c @@ -637,6 +637,82 @@ static int yellow_carp_get_dpm_freq_by_index(struct smu_context *smu, return 0; } +static bool yellow_carp_clk_dpm_is_enabled(struct smu_context *smu, + enum smu_clk_type clk_type) +{ + enum smu_feature_mask feature_id = 0; + + switch (clk_type) { + case SMU_MCLK: + case SMU_UCLK: + case SMU_FCLK: + feature_id = SMU_FEATURE_DPM_FCLK_BIT; + break; + case SMU_GFXCLK: + case SMU_SCLK: + feature_id = SMU_FEATURE_DPM_GFXCLK_BIT; + break; + case SMU_SOCCLK: + feature_id = SMU_FEATURE_DPM_SOCCLK_BIT; + break; + case SMU_VCLK: + case SMU_DCLK: + feature_id = SMU_FEATURE_VCN_DPM_BIT; + break; + default: + return true; + } + + return smu_cmn_feature_is_enabled(smu, feature_id); +} + +static int yellow_carp_set_soft_freq_limited_range(struct smu_context *smu, + enum smu_clk_type clk_type, + uint32_t min, + uint32_t max) +{ + enum smu_message_type msg_set_min, msg_set_max; + int ret = 0; + + if (!yellow_carp_clk_dpm_is_enabled(smu, clk_type)) + return -EINVAL; + + switch (clk_type) { + case SMU_GFXCLK: + case SMU_SCLK: + msg_set_min = SMU_MSG_SetHardMinGfxClk; + msg_set_max = SMU_MSG_SetSoftMaxGfxClk; + break; + case SMU_FCLK: + case SMU_MCLK: + msg_set_min = SMU_MSG_SetHardMinFclkByFreq; + msg_set_max = SMU_MSG_SetSoftMaxFclkByFreq; + break; + case SMU_SOCCLK: + msg_set_min = SMU_MSG_SetHardMinSocclkByFreq; + msg_set_max = SMU_MSG_SetSoftMaxSocclkByFreq; + break; + case SMU_VCLK: + case SMU_DCLK: + msg_set_min = SMU_MSG_SetHardMinVcn; + msg_set_max = SMU_MSG_SetSoftMaxVcn; + break; + default: + return -EINVAL; + } + + ret = smu_cmn_send_smc_msg_with_param(smu, msg_set_min, min, NULL); + if (ret) + goto out; + + ret = smu_cmn_send_smc_msg_with_param(smu, msg_set_max, max, NULL); + if (ret) + goto out; + +out: + return ret; +} + static int yellow_carp_print_clk_levels(struct smu_context *smu, enum smu_clk_type clk_type, char *buf) { @@ -686,6 +762,43 @@ print_clk_out: return size; } +static int yellow_carp_force_clk_levels(struct smu_context *smu, + enum smu_clk_type clk_type, uint32_t mask) +{ + uint32_t soft_min_level = 0, soft_max_level = 0; + uint32_t min_freq = 0, max_freq = 0; + int ret = 0; + + soft_min_level = mask ? (ffs(mask) - 1) : 0; + soft_max_level = mask ? (fls(mask) - 1) : 0; + + switch (clk_type) { + case SMU_SOCCLK: + case SMU_MCLK: + case SMU_FCLK: + case SMU_VCLK: + case SMU_DCLK: + ret = yellow_carp_get_dpm_freq_by_index(smu, clk_type, soft_min_level, &min_freq); + if (ret) + goto force_level_out; + + ret = yellow_carp_get_dpm_freq_by_index(smu, clk_type, soft_max_level, &max_freq); + if (ret) + goto force_level_out; + + ret = yellow_carp_set_soft_freq_limited_range(smu, clk_type, min_freq, max_freq); + if (ret) + goto force_level_out; + break; + default: + ret = -EINVAL; + break; + } + +force_level_out: + return ret; +} + static int yellow_carp_set_fine_grain_gfx_freq_parameters(struct smu_context *smu) { DpmClocks_t *clk_table = smu->smu_table.clocks_table; @@ -719,6 +832,7 @@ static const struct pptable_funcs yellow_carp_ppt_funcs = { .post_init = yellow_carp_post_smu_init, .od_edit_dpm_table = yellow_carp_od_edit_dpm_table, .print_clk_levels = yellow_carp_print_clk_levels, + .force_clk_levels = yellow_carp_force_clk_levels, .set_fine_grain_gfx_freq_parameters = yellow_carp_set_fine_grain_gfx_freq_parameters, }; -- 2.11.0