accel/ivpu: Fix DCT active percent format

The pcode MAILBOX STATUS register PARAM2 field expects DCT active
percent in U1.7 value format. Convert percentage value to this
format before writing to the register.

Fixes: a19bffb10c46 ("accel/ivpu: Implement DCT handling")
Reviewed-by: Lizhi Hou <lizhi.hou@amd.com>
Signed-off-by: Karol Wachowski <karol.wachowski@linux.intel.com>
Link: https://lore.kernel.org/r/20251001104322.1249896-1-karol.wachowski@linux.intel.com

diff --git a/drivers/accel/ivpu/ivpu_hw_btrs.c b/drivers/accel/ivpu/ivpu_hw_btrs.c
index afdb3b2aa72a7009f610d973265a8a5cb765cac4..aa33f562d29c12f0ae3801204992d980b1e91326 100644 (file)
--- a/drivers/accel/ivpu/ivpu_hw_btrs.c
+++ b/drivers/accel/ivpu/ivpu_hw_btrs.c
@@ -752,7 +752,7 @@ int ivpu_hw_btrs_dct_get_request(struct ivpu_device *vdev, bool *enable)
        }
 }
 
-void ivpu_hw_btrs_dct_set_status(struct ivpu_device *vdev, bool enable, u32 active_percent)
+void ivpu_hw_btrs_dct_set_status(struct ivpu_device *vdev, bool enable, u8 active_percent)
 {
        u32 val = 0;
        u32 cmd = enable ? DCT_ENABLE : DCT_DISABLE;

diff --git a/drivers/accel/ivpu/ivpu_hw_btrs.h b/drivers/accel/ivpu/ivpu_hw_btrs.h
index 032c384ac3d4d59803986678464ce41ecf8e05f0..c4c10e22f30f37ff14de465fc62f99ef714e16f0 100644 (file)
--- a/drivers/accel/ivpu/ivpu_hw_btrs.h
+++ b/drivers/accel/ivpu/ivpu_hw_btrs.h
@@ -36,7 +36,7 @@ u32 ivpu_hw_btrs_dpu_freq_get(struct ivpu_device *vdev);
 bool ivpu_hw_btrs_irq_handler_mtl(struct ivpu_device *vdev, int irq);
 bool ivpu_hw_btrs_irq_handler_lnl(struct ivpu_device *vdev, int irq);
 int ivpu_hw_btrs_dct_get_request(struct ivpu_device *vdev, bool *enable);
-void ivpu_hw_btrs_dct_set_status(struct ivpu_device *vdev, bool enable, u32 active_percent);
+void ivpu_hw_btrs_dct_set_status(struct ivpu_device *vdev, bool enable, u8 active_percent);
 u32 ivpu_hw_btrs_telemetry_offset_get(struct ivpu_device *vdev);
 u32 ivpu_hw_btrs_telemetry_size_get(struct ivpu_device *vdev);
 u32 ivpu_hw_btrs_telemetry_enable_get(struct ivpu_device *vdev);

diff --git a/drivers/accel/ivpu/ivpu_pm.c b/drivers/accel/ivpu/ivpu_pm.c
index 7514f580eef4338769c94311ad7157bedbf3665d..63c95307faa15978d2cee5245562939d80838d80 100644 (file)
--- a/drivers/accel/ivpu/ivpu_pm.c
+++ b/drivers/accel/ivpu/ivpu_pm.c
@@ -502,6 +502,11 @@ void ivpu_pm_irq_dct_work_fn(struct work_struct *work)
        else
                ret = ivpu_pm_dct_disable(vdev);
 
-       if (!ret)
-               ivpu_hw_btrs_dct_set_status(vdev, enable, vdev->pm->dct_active_percent);
+       if (!ret) {
+               /* Convert percent to U1.7 format */
+               u8 val = DIV_ROUND_CLOSEST(vdev->pm->dct_active_percent * 128, 100);
+
+               ivpu_hw_btrs_dct_set_status(vdev, enable, val);
+       }
+
 }