From 8bea2527faa13dad21e4307af77b292a8e4ded2f Mon Sep 17 00:00:00 2001
From: Rex Zhu <Rex.Zhu@amd.com>
Date: Mon, 12 Sep 2016 15:17:37 +0800
Subject: [PATCH] drm/amd/powerplay: add helper function to get voltage id in
votage table
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Acked-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/powerplay/hwmgr/hwmgr.c | 21 +++++++++++++++++++++
drivers/gpu/drm/amd/powerplay/inc/hwmgr.h | 4 ++--
2 files changed, 23 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/hwmgr.c
index 1aacda7978e6..cb417c60321c 100644
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/hwmgr.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/hwmgr.c
@@ -443,6 +443,27 @@ uint8_t phm_get_voltage_index(
return i - 1;
}
+uint8_t phm_get_voltage_id(pp_atomctrl_voltage_table *voltage_table,
+ uint32_t voltage)
+{
+ uint8_t count = (uint8_t) (voltage_table->count);
+ uint8_t i = 0;
+
+ PP_ASSERT_WITH_CODE((NULL != voltage_table),
+ "Voltage Table empty.", return 0;);
+ PP_ASSERT_WITH_CODE((0 != count),
+ "Voltage Table empty.", return 0;);
+
+ for (i = 0; i < count; i++) {
+ /* find first voltage bigger than requested */
+ if (voltage_table->entries[i].value >= voltage)
+ return i;
+ }
+
+ /* voltage is bigger than max voltage in the table */
+ return i - 1;
+}
+
uint16_t phm_find_closest_vddci(struct pp_atomctrl_voltage_table *vddci_table, uint16_t vddci)
{
uint32_t i;
diff --git a/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h b/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h
index 2a060f6c2041..aa4f5f32e522 100644
--- a/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h
+++ b/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h
@@ -685,6 +685,8 @@ extern void phm_trim_voltage_table_to_fit_state_table(uint32_t max_vol_steps, st
extern int phm_reset_single_dpm_table(void *table, uint32_t count, int max);
extern void phm_setup_pcie_table_entry(void *table, uint32_t index, uint32_t pcie_gen, uint32_t pcie_lanes);
extern int32_t phm_get_dpm_level_enable_mask_value(void *table);
+extern uint8_t phm_get_voltage_id(struct pp_atomctrl_voltage_table *voltage_table,
+ uint32_t voltage);
extern uint8_t phm_get_voltage_index(struct phm_ppt_v1_voltage_lookup_table *lookup_table, uint16_t voltage);
extern uint16_t phm_find_closest_vddci(struct pp_atomctrl_voltage_table *vddci_table, uint16_t vddci);
extern int phm_find_boot_level(void *table, uint32_t value, uint32_t *boot_level);
@@ -709,8 +711,6 @@ extern void phm_apply_dal_min_voltage_request(struct pp_hwmgr *hwmgr);
PHM_FIELD_SHIFT(reg, field))
-
-
/* Operations on named fields. */
#define PHM_READ_FIELD(device, reg, field) \
--
GitLab