linux-kernel - [PATCH 5.10 102/157] drm/amd/pm: fulfill the Polaris implementation for get_clock_by_type_with

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Message-Id: <20210322121937.010230816@linuxfoundation.org>
Date:   Mon, 22 Mar 2021 13:27:39 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Evan Quan <evan.quan@....com>,
        Alex Deucher <alexander.deucher@....com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.10 102/157] drm/amd/pm: fulfill the Polaris implementation for get_clock_by_type_with_latency()

From: Evan Quan <evan.quan@....com>

[ Upstream commit 690cdc2635849db8b782dbbcabfb1c7519c84fa1 ]

Fulfill Polaris get_clock_by_type_with_latency().

Signed-off-by: Evan Quan <evan.quan@....com>
Acked-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 .../drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c   | 67 +++++++++++++++++++
 1 file changed, 67 insertions(+)

diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c
index 35629140fc7a..c5223a9e0d89 100644
--- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c
+++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c
@@ -4771,6 +4771,72 @@ static int smu7_get_clock_by_type(struct pp_hwmgr *hwmgr, enum amd_pp_clock_type
 	return 0;
 }
 
+static int smu7_get_sclks_with_latency(struct pp_hwmgr *hwmgr,
+				       struct pp_clock_levels_with_latency *clocks)
+{
+	struct phm_ppt_v1_information *table_info =
+			(struct phm_ppt_v1_information *)hwmgr->pptable;
+	struct phm_ppt_v1_clock_voltage_dependency_table *dep_sclk_table =
+			table_info->vdd_dep_on_sclk;
+	int i;
+
+	clocks->num_levels = 0;
+	for (i = 0; i < dep_sclk_table->count; i++) {
+		if (dep_sclk_table->entries[i].clk) {
+			clocks->data[clocks->num_levels].clocks_in_khz =
+				dep_sclk_table->entries[i].clk * 10;
+			clocks->num_levels++;
+		}
+	}
+
+	return 0;
+}
+
+static int smu7_get_mclks_with_latency(struct pp_hwmgr *hwmgr,
+				       struct pp_clock_levels_with_latency *clocks)
+{
+	struct phm_ppt_v1_information *table_info =
+			(struct phm_ppt_v1_information *)hwmgr->pptable;
+	struct phm_ppt_v1_clock_voltage_dependency_table *dep_mclk_table =
+			table_info->vdd_dep_on_mclk;
+	int i;
+
+	clocks->num_levels = 0;
+	for (i = 0; i < dep_mclk_table->count; i++) {
+		if (dep_mclk_table->entries[i].clk) {
+			clocks->data[clocks->num_levels].clocks_in_khz =
+					dep_mclk_table->entries[i].clk * 10;
+			clocks->data[clocks->num_levels].latency_in_us =
+					smu7_get_mem_latency(hwmgr, dep_mclk_table->entries[i].clk);
+			clocks->num_levels++;
+		}
+	}
+
+	return 0;
+}
+
+static int smu7_get_clock_by_type_with_latency(struct pp_hwmgr *hwmgr,
+					       enum amd_pp_clock_type type,
+					       struct pp_clock_levels_with_latency *clocks)
+{
+	if (!(hwmgr->chip_id >= CHIP_POLARIS10 &&
+	      hwmgr->chip_id <= CHIP_VEGAM))
+		return -EINVAL;
+
+	switch (type) {
+	case amd_pp_sys_clock:
+		smu7_get_sclks_with_latency(hwmgr, clocks);
+		break;
+	case amd_pp_mem_clock:
+		smu7_get_mclks_with_latency(hwmgr, clocks);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
 static int smu7_notify_cac_buffer_info(struct pp_hwmgr *hwmgr,
 					uint32_t virtual_addr_low,
 					uint32_t virtual_addr_hi,
@@ -5188,6 +5254,7 @@ static const struct pp_hwmgr_func smu7_hwmgr_funcs = {
 	.get_mclk_od = smu7_get_mclk_od,
 	.set_mclk_od = smu7_set_mclk_od,
 	.get_clock_by_type = smu7_get_clock_by_type,
+	.get_clock_by_type_with_latency = smu7_get_clock_by_type_with_latency,
 	.read_sensor = smu7_read_sensor,
 	.dynamic_state_management_disable = smu7_disable_dpm_tasks,
 	.avfs_control = smu7_avfs_control,
-- 
2.30.1