[PATCH] drm/amdgpu: add missing nbio_v7_11_5 callbacks

Wire up get_clockgating_state, update_medium_grain_clock_gating,
update_medium_grain_light_sleep and get_rom_offset. The missing
get_clockgating_state caused a NULL pointer dereference when reading
the amdgpu_pm_info debugfs node.

Fixes: 0453ccd3237a ("drm/amdgpu: Add NBIO 7.11.5 support")

Signed-off-by: Shubhankar Milind Sardeshpande <[email protected]>
---
 drivers/gpu/drm/amd/amdgpu/nbio_v7_11_5.c | 32 +++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v7_11_5.c b/drivers/gpu/drm/amd/amdgpu/nbio_v7_11_5.c
index 9bb998a47ef6..558511dd25aa 100644
--- a/drivers/gpu/drm/amd/amdgpu/nbio_v7_11_5.c
+++ b/drivers/gpu/drm/amd/amdgpu/nbio_v7_11_5.c
@@ -249,6 +249,24 @@ static void nbio_v7_11_5_ih_control(struct amdgpu_device *adev)
 		WREG32_SOC15(NBIO, 0, regBIF_BX1_INTERRUPT_CNTL, interrupt_cntl);
 }
 
+static void
+nbio_v7_11_5_update_medium_grain_clock_gating(struct amdgpu_device *adev,
+					     bool enable)
+{
+}
+
+static void
+nbio_v7_11_5_update_medium_grain_light_sleep(struct amdgpu_device *adev,
+					    bool enable)
+{
+}
+
+static void
+nbio_v7_11_5_get_clockgating_state(struct amdgpu_device *adev,
+				  u64 *flags)
+{
+}
+
 static u32 nbio_v7_11_5_get_hdp_flush_req_offset(struct amdgpu_device *adev)
 {
 	u32 offset;
@@ -309,6 +327,16 @@ static void nbio_v7_11_5_init_registers(struct amdgpu_device *adev)
 	WREG32_SOC15(NBIO, 0, regRCC_DEV0_EPF2_STRAP2, data);
 }
 
+static u32 nbio_v7_11_5_get_rom_offset(struct amdgpu_device *adev)
+{
+	u32 data, rom_offset;
+
+	data = RREG32_SOC15(NBIO, 0, regREGS_ROM_OFFSET_CTRL);
+	rom_offset = REG_GET_FIELD(data, REGS_ROM_OFFSET_CTRL, ROM_OFFSET);
+
+	return rom_offset;
+}
+
 #define MMIO_REG_HOLE_OFFSET (0x80000 - PAGE_SIZE)
 
 static void nbio_v7_11_5_set_reg_remap(struct amdgpu_device *adev)
@@ -337,8 +365,12 @@ const struct amdgpu_nbio_funcs nbio_v7_11_5_funcs = {
 	.enable_doorbell_aperture = nbio_v7_11_5_enable_doorbell_aperture,
 	.enable_doorbell_selfring_aperture = nbio_v7_11_5_enable_doorbell_selfring_aperture,
 	.ih_doorbell_range = nbio_v7_11_5_ih_doorbell_range,
+	.update_medium_grain_clock_gating = nbio_v7_11_5_update_medium_grain_clock_gating,
+	.update_medium_grain_light_sleep = nbio_v7_11_5_update_medium_grain_light_sleep,
+	.get_clockgating_state = nbio_v7_11_5_get_clockgating_state,
 	.ih_control = nbio_v7_11_5_ih_control,
 	.init_registers = nbio_v7_11_5_init_registers,
 	.remap_hdp_registers = nbio_v7_11_5_remap_hdp_registers,
+	.get_rom_offset = nbio_v7_11_5_get_rom_offset,
 	.set_reg_remap = nbio_v7_11_5_set_reg_remap,
 };
-- 
2.43.0