1 files changed, 0 insertions, 94 deletions
diff --git a/drivers/gpu/drm/i915/intel_sbi.c b/drivers/gpu/drm/i915/intel_sbi.c
deleted file mode 100644
index 41e85ac773dc..000000000000
--- a/drivers/gpu/drm/i915/intel_sbi.c
+++ /dev/null
@@ -1,94 +0,0 @@
-// SPDX-License-Identifier: MIT
-/*
- * Copyright © 2013-2021 Intel Corporation
- *
- * LPT/WPT IOSF sideband.
- */
-
-#include "i915_drv.h"
-#include "intel_sbi.h"
-#include "i915_reg.h"
-
-/* SBI access */
-static int intel_sbi_rw(struct drm_i915_private *i915, u16 reg,
-			enum intel_sbi_destination destination,
-			u32 *val, bool is_read)
-{
-	struct intel_uncore *uncore = &i915->uncore;
-	u32 cmd;
-
-	lockdep_assert_held(&i915->sbi_lock);
-
-	if (intel_wait_for_register_fw(uncore,
-				       SBI_CTL_STAT, SBI_BUSY, 0,
-				       100)) {
-		drm_err(&i915->drm,
-			"timeout waiting for SBI to become ready\n");
-		return -EBUSY;
-	}
-
-	intel_uncore_write_fw(uncore, SBI_ADDR, (u32)reg << 16);
-	intel_uncore_write_fw(uncore, SBI_DATA, is_read ? 0 : *val);
-
-	if (destination == SBI_ICLK)
-		cmd = SBI_CTL_DEST_ICLK | SBI_CTL_OP_CRRD;
-	else
-		cmd = SBI_CTL_DEST_MPHY | SBI_CTL_OP_IORD;
-	if (!is_read)
-		cmd |= BIT(8);
-	intel_uncore_write_fw(uncore, SBI_CTL_STAT, cmd | SBI_BUSY);
-
-	if (__intel_wait_for_register_fw(uncore,
-					 SBI_CTL_STAT, SBI_BUSY, 0,
-					 100, 100, &cmd)) {
-		drm_err(&i915->drm,
-			"timeout waiting for SBI to complete read\n");
-		return -ETIMEDOUT;
-	}
-
-	if (cmd & SBI_RESPONSE_FAIL) {
-		drm_err(&i915->drm, "error during SBI read of reg %x\n", reg);
-		return -ENXIO;
-	}
-
-	if (is_read)
-		*val = intel_uncore_read_fw(uncore, SBI_DATA);
-
-	return 0;
-}
-
-void intel_sbi_lock(struct drm_i915_private *i915)
-{
-	mutex_lock(&i915->sbi_lock);
-}
-
-void intel_sbi_unlock(struct drm_i915_private *i915)
-{
-	mutex_unlock(&i915->sbi_lock);
-}
-
-u32 intel_sbi_read(struct drm_i915_private *i915, u16 reg,
-		   enum intel_sbi_destination destination)
-{
-	u32 result = 0;
-
-	intel_sbi_rw(i915, reg, destination, &result, true);
-
-	return result;
-}
-
-void intel_sbi_write(struct drm_i915_private *i915, u16 reg, u32 value,
-		     enum intel_sbi_destination destination)
-{
-	intel_sbi_rw(i915, reg, destination, &value, false);
-}
-
-void intel_sbi_init(struct drm_i915_private *i915)
-{
-	mutex_init(&i915->sbi_lock);
-}
-
-void intel_sbi_fini(struct drm_i915_private *i915)
-{
-	mutex_destroy(&i915->sbi_lock);
-}