From 00abb872ef0f82dde131b9bd12096100bb24d9ba Mon Sep 17 00:00:00 2001 From: Tim Huang Date: Sun, 21 May 2023 09:24:00 +0800 Subject: [PATCH] drm/amd/pm: reverse mclk and fclk clocks levels for SMU v13.0.4 commit 6a07826f2057b5fa1c479ba56460195882464270 upstream. This patch reverses the DPM clocks levels output of pp_dpm_mclk and pp_dpm_fclk. On dGPUs and older APUs we expose the levels from lowest clocks to highest clocks. But for some APUs, the clocks levels that from the DFPstateTable are given the reversed orders by PMFW. Like the memory DPM clocks that are exposed by pp_dpm_mclk. It's not intuitive that they are reversed on these APUs. All tools and software that talks to the driver then has to know different ways to interpret the data depending on the asic. So we need to reverse them to expose the clocks levels from the driver consistently. Signed-off-by: Tim Huang Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_4_ppt.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_4_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_4_ppt.c index 8fa9a36..6d9760e 100644 --- a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_4_ppt.c +++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_4_ppt.c @@ -478,7 +478,7 @@ static int smu_v13_0_4_get_dpm_level_count(struct smu_context *smu, static int smu_v13_0_4_print_clk_levels(struct smu_context *smu, enum smu_clk_type clk_type, char *buf) { - int i, size = 0, ret = 0; + int i, idx, size = 0, ret = 0; uint32_t cur_value = 0, value = 0, count = 0; uint32_t min, max; @@ -512,7 +512,8 @@ static int smu_v13_0_4_print_clk_levels(struct smu_context *smu, break; for (i = 0; i < count; i++) { - ret = smu_v13_0_4_get_dpm_freq_by_index(smu, clk_type, i, &value); + idx = (clk_type == SMU_FCLK || clk_type == SMU_MCLK) ? (count - i - 1) : i; + ret = smu_v13_0_4_get_dpm_freq_by_index(smu, clk_type, idx, &value); if (ret) break; -- 2.7.4