drm/amd/powerplay: Update CKS on/ CKS off voltage offset calculation

CKS on/off voltage offset calculation algorithm takes in a few coefficients.
We need to update them for polaris to latest coefficients to align with BB.

Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/polaris10_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/polaris10_hwmgr.c
index 20ccbc7..d23dcce 100644 (file)
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/polaris10_hwmgr.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/polaris10_hwmgr.c
@@ -98,6 +98,7 @@
 #define PCIE_BUS_CLK                10000
 #define TCLK                        (PCIE_BUS_CLK / 10)
 
+#define CEILING_UCHAR(double) ((double-(uint8_t)(double)) > 0 ? (uint8_t)(double+1) : (uint8_t)(double))
 
 static const uint16_t polaris10_clock_stretcher_lookup_table[2][4] =
 { {600, 1050, 3, 0}, {600, 1050, 6, 1} };
@@ -1787,20 +1788,27 @@ static int polaris10_populate_clock_stretcher_data_table(struct pp_hwmgr *hwmgr)
 
        ro = efuse * (max -min)/255 + min;
 
-       /* Populate Sclk_CKS_masterEn0_7 and Sclk_voltageOffset */
+       /* Populate Sclk_CKS_masterEn0_7 and Sclk_voltageOffset
+        * there is a little difference in calculating
+        * volt_with_cks with windows */
        for (i = 0; i < sclk_table->count; i++) {
                data->smc_state_table.Sclk_CKS_masterEn0_7 |=
                                sclk_table->entries[i].cks_enable << i;
-
-               volt_without_cks =  (uint32_t)(((ro - 40) * 1000 - 2753594 - sclk_table->entries[i].clk/100 * 136418 /1000) / \
-                                       (sclk_table->entries[i].clk/100 * 1132925 /10000 - 242418)/100);
-
-               volt_with_cks = (uint32_t)((ro * 1000 -2396351 - sclk_table->entries[i].clk/100 * 329021/1000) / \
-                               (sclk_table->entries[i].clk/10000 * 649434 /1000  - 18005)/10);
+               if (hwmgr->chip_id == CHIP_POLARIS10) {
+                       volt_without_cks = (uint32_t)((2753594000 + (sclk_table->entries[i].clk/100) * 136418 -(ro - 70) * 1000000) / \
+                                               (2424180 - (sclk_table->entries[i].clk/100) * 1132925/1000));
+                       volt_with_cks = (uint32_t)((279720200 + sclk_table->entries[i].clk * 3232 - (ro - 65) * 100000000) / \
+                                       (252248000 - sclk_table->entries[i].clk/100 * 115764));
+               } else {
+                       volt_without_cks = (uint32_t)((2416794800 + (sclk_table->entries[i].clk/100) * 1476925/10 -(ro - 50) * 1000000) / \
+                                               (2625416 - (sclk_table->entries[i].clk/100) * 12586807/10000));
+                       volt_with_cks = (uint32_t)((2999656000 + sclk_table->entries[i].clk * 392803/100 - (ro - 44) * 1000000) / \
+                                       (3422454 - sclk_table->entries[i].clk/100 * 18886376/10000));
+               }
 
                if (volt_without_cks >= volt_with_cks)
-                       volt_offset = (uint8_t)(((volt_without_cks - volt_with_cks +
-                                       sclk_table->entries[i].cks_voffset) * 100 / 625) + 1);
+                       volt_offset = (uint8_t)CEILING_UCHAR((volt_without_cks - volt_with_cks +
+                                       sclk_table->entries[i].cks_voffset) * 100 / 625);
 
                data->smc_state_table.Sclk_voltageOffset[i] = volt_offset;
        }