On Fri, 22 Sep 2023, Shyam Sundar S K wrote:
> P3T (Peak Package Power Limit) is a metric within the SMU controller
> that can influence the power limits. Add support from the driver
> to update P3T limits accordingly.
>
> Reviewed-by: Mario Limonciello <mario.limonciello@xxxxxxx>
> Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@xxxxxxx>
> ---
> drivers/platform/x86/amd/pmf/pmf.h | 3 +++
> drivers/platform/x86/amd/pmf/tee-if.c | 8 ++++++++
> 2 files changed, 11 insertions(+)
>
> diff --git a/drivers/platform/x86/amd/pmf/pmf.h b/drivers/platform/x86/amd/pmf/pmf.h
> index e64b4d285624..897f61b75e2f 100644
> --- a/drivers/platform/x86/amd/pmf/pmf.h
> +++ b/drivers/platform/x86/amd/pmf/pmf.h
> @@ -46,6 +46,7 @@
> #define GET_STT_MIN_LIMIT 0x1F
> #define GET_STT_LIMIT_APU 0x20
> #define GET_STT_LIMIT_HS2 0x21
> +#define SET_P3T 0x23 /* P3T: Peak Package Power Limit */
>
> /* OS slider update notification */
> #define DC_BEST_PERF 0
> @@ -69,6 +70,7 @@
> #define PMF_POLICY_STT_MIN 6
> #define PMF_POLICY_STT_SKINTEMP_APU 7
> #define PMF_POLICY_STT_SKINTEMP_HS2 8
> +#define PMF_POLICY_P3T 38
>
> /* TA macros */
> #define PMF_TA_IF_VERSION__MAJOR 1
> @@ -472,6 +474,7 @@ struct pmf_action_table {
> unsigned long stt_minlimit; /* in mW */
> unsigned long stt_skintemp_apu; /* in C */
> unsigned long stt_skintemp_hs2; /* in C */
> + unsigned long p3t_limit; /* in mW */
> };
>
> /* Input conditions */
> diff --git a/drivers/platform/x86/amd/pmf/tee-if.c b/drivers/platform/x86/amd/pmf/tee-if.c
> index eb25d5ce3a9a..883dd143375a 100644
> --- a/drivers/platform/x86/amd/pmf/tee-if.c
> +++ b/drivers/platform/x86/amd/pmf/tee-if.c
> @@ -105,6 +105,14 @@ static void amd_pmf_apply_policies(struct amd_pmf_dev *dev, struct ta_pmf_enact_
> dev->prev_data->stt_skintemp_hs2 = val;
> }
> break;
> +
> + case PMF_POLICY_P3T:
> + if (dev->prev_data->p3t_limit != val) {
> + amd_pmf_send_cmd(dev, SET_P3T, false, val, NULL);
> + dev_dbg(dev->dev, "update P3T : %d\n", val);
%d vs u32
> + dev->prev_data->p3t_limit = val;
unsigned long vs u32 ? (as in the other patch)
--
i.
