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drm/amd/pm: reverse mclk and fclk clocks levels for yellow carp

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commit f1373a97a41f429e0095d4be388092ffa3c1a157 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 <Tim.Huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tim Huang 2023-05-21 10:35:59 +08:00 committed by Greg Kroah-Hartman
parent 1c729bd5b3
commit f05f3fcc78
1 changed files with 3 additions and 2 deletions
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5
drivers/gpu/drm/amd/pm/swsmu/smu13/yellow_carp_ppt.c
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@ -1000,7 +1000,7 @@ static int yellow_carp_set_soft_freq_limited_range(struct smu_context *smu,
static int yellow_carp_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;
@ -1033,7 +1033,8 @@ static int yellow_carp_print_clk_levels(struct smu_context *smu,
goto print_clk_out;
for (i = 0; i < count; i++) {
ret = yellow_carp_get_dpm_freq_by_index(smu, clk_type, i, &value);
idx = (clk_type == SMU_FCLK || clk_type == SMU_MCLK) ? (count - i - 1) : i;
ret = yellow_carp_get_dpm_freq_by_index(smu, clk_type, idx, &value);
if (ret)
goto print_clk_out;