gpu: nvgpu: fn to send noise-unaware vmin to pmu

JIRA DNVGPU-184

implement a function which takes noise unaware vmin for
logic and sram rails as input and sends them to pmu via RPC

Change-Id: Ic0d72daf99870477d4dbd17e1c609dd0c39f8197
Signed-off-by: Vijayakumar <vsubbu@nvidia.com>
Reviewed-on: http://git-master/r/1248210
(cherry picked from commit 2ad833c1edf65ada6c72b56ecd3551e7c4d396f6)
Reviewed-on: http://git-master/r/1270885
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit

3 files changed, 47 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/volt/volt_pmu.c b/drivers/gpu/nvgpu/volt/volt_pmu.c
index a92eb777..4e7f73c9 100644
--- a/drivers/gpu/nvgpu/volt/volt_pmu.c
+++ b/drivers/gpu/nvgpu/volt/volt_pmu.c
@@ -231,3 +231,46 @@ u32 volt_get_voltage(struct gk20a *g, u32 volt_domain, u32 *voltage_uv)
 {
         return volt_rail_get_voltage(g, volt_domain, voltage_uv);
 }
+
+static int volt_policy_set_noiseaware_vmin(struct gk20a *g,
+                struct ctrl_volt_volt_rail_list *prail_list)
+{
+        struct nv_pmu_volt_rpc rpc_call = { 0 };
+        u32 status = 0;
+
+        /* Set RPC parameters. */
+        rpc_call.function = NV_PMU_VOLT_RPC_ID_VOLT_RAIL_SET_NOISE_UNAWARE_VMIN;
+        rpc_call.params.volt_rail_set_noise_unaware_vmin.num_rails =
+                        prail_list->num_rails;
+        memcpy(&rpc_call.params.volt_rail_set_noise_unaware_vmin.rail_list,
+                prail_list, (sizeof(struct ctrl_volt_volt_rail_list)));
+
+        /* Execute the voltage change request via PMU RPC. */
+        status = volt_pmu_rpc_execute(g, &rpc_call);
+        if (status) {
+                gk20a_err(dev_from_gk20a(g),
+                        "Error while executing VOLT_POLICY_SET_VOLTAGE RPC");
+                return -EINVAL;
+        }
+
+        return 0;
+}
+
+int volt_set_noiseaware_vmin(struct gk20a *g, u32 logic_voltage_uv,
+        u32 sram_voltage_uv)
+{
+        int status = 0;
+        struct ctrl_volt_volt_rail_list rail_list = { 0 };
+
+        rail_list.num_rails = RAIL_COUNT;
+        rail_list.rails[0].rail_idx = 0;
+        rail_list.rails[0].voltage_uv = logic_voltage_uv;
+        rail_list.rails[1].rail_idx = 1;
+        rail_list.rails[1].voltage_uv = sram_voltage_uv;
+
+        status = volt_policy_set_noiseaware_vmin(g, &rail_list);
+
+        return status;
+
+}
+
diff --git a/drivers/gpu/nvgpu/volt/volt_pmu.h b/drivers/gpu/nvgpu/volt/volt_pmu.h
index 9af3fb68..7e639375 100644
--- a/drivers/gpu/nvgpu/volt/volt_pmu.h
+++ b/drivers/gpu/nvgpu/volt/volt_pmu.h
@@ -18,5 +18,6 @@ u32 volt_pmu_send_load_cmd_to_pmu(struct gk20a *g);
 u32 volt_set_voltage(struct gk20a *g, u32 logic_voltage_uv,
                 u32 sram_voltage_uv);
 u32 volt_get_voltage(struct gk20a *g, u32 volt_domain, u32 *voltage_uv);
-
+int volt_set_noiseaware_vmin(struct gk20a *g, u32 logic_voltage_uv,
+                u32 sram_voltage_uv);
 #endif
diff --git a/drivers/gpu/nvgpu/volt/volt_rail.h b/drivers/gpu/nvgpu/volt/volt_rail.h
index 0180992c..8b930010 100644
--- a/drivers/gpu/nvgpu/volt/volt_rail.h
+++ b/drivers/gpu/nvgpu/volt/volt_rail.h
@@ -61,6 +61,8 @@ struct voltage_rail_metadata {
         u8 volt_domain_hal;
         u8 pct_delta;
         u32 ext_rel_delta_uv[CTRL_VOLT_RAIL_VOLT_DELTA_MAX_ENTRIES];
+        u8 logic_rail_idx;
+        u8 sram_rail_idx;
         struct boardobjgrp_e32 volt_rails;
 };