drm/i915: split out vlv sideband to a separate file

The VLV/CHV sideband code is pretty distinct from the rest of the
sideband code. Split it out to new vlv_sideband.[ch].

Pure code movement with relevant #include changes, and a tiny checkpatch
fix on top.

Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/755ebbbaf01fc6d306b763b6ef60f45e671ba290.1634119597.git.jani.nikula@intel.com

1 files changed, 123 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/vlv_sideband.h b/drivers/gpu/drm/i915/vlv_sideband.h
new file mode 100644
index 000000000000..d7732f612e7f
--- /dev/null
+++ b/drivers/gpu/drm/i915/vlv_sideband.h
@@ -0,0 +1,123 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2013-2021 Intel Corporation
+ */
+
+#ifndef _VLV_SIDEBAND_H_
+#define _VLV_SIDEBAND_H_
+
+#include <linux/bitops.h>
+#include <linux/types.h>
+
+enum pipe;
+struct drm_i915_private;
+
+enum {
+	VLV_IOSF_SB_BUNIT,
+	VLV_IOSF_SB_CCK,
+	VLV_IOSF_SB_CCU,
+	VLV_IOSF_SB_DPIO,
+	VLV_IOSF_SB_FLISDSI,
+	VLV_IOSF_SB_GPIO,
+	VLV_IOSF_SB_NC,
+	VLV_IOSF_SB_PUNIT,
+};
+
+void vlv_iosf_sb_get(struct drm_i915_private *i915, unsigned long ports);
+u32 vlv_iosf_sb_read(struct drm_i915_private *i915, u8 port, u32 reg);
+void vlv_iosf_sb_write(struct drm_i915_private *i915,
+		       u8 port, u32 reg, u32 val);
+void vlv_iosf_sb_put(struct drm_i915_private *i915, unsigned long ports);
+
+static inline void vlv_bunit_get(struct drm_i915_private *i915)
+{
+	vlv_iosf_sb_get(i915, BIT(VLV_IOSF_SB_BUNIT));
+}
+
+u32 vlv_bunit_read(struct drm_i915_private *i915, u32 reg);
+void vlv_bunit_write(struct drm_i915_private *i915, u32 reg, u32 val);
+
+static inline void vlv_bunit_put(struct drm_i915_private *i915)
+{
+	vlv_iosf_sb_put(i915, BIT(VLV_IOSF_SB_BUNIT));
+}
+
+static inline void vlv_cck_get(struct drm_i915_private *i915)
+{
+	vlv_iosf_sb_get(i915, BIT(VLV_IOSF_SB_CCK));
+}
+
+u32 vlv_cck_read(struct drm_i915_private *i915, u32 reg);
+void vlv_cck_write(struct drm_i915_private *i915, u32 reg, u32 val);
+
+static inline void vlv_cck_put(struct drm_i915_private *i915)
+{
+	vlv_iosf_sb_put(i915, BIT(VLV_IOSF_SB_CCK));
+}
+
+static inline void vlv_ccu_get(struct drm_i915_private *i915)
+{
+	vlv_iosf_sb_get(i915, BIT(VLV_IOSF_SB_CCU));
+}
+
+u32 vlv_ccu_read(struct drm_i915_private *i915, u32 reg);
+void vlv_ccu_write(struct drm_i915_private *i915, u32 reg, u32 val);
+
+static inline void vlv_ccu_put(struct drm_i915_private *i915)
+{
+	vlv_iosf_sb_put(i915, BIT(VLV_IOSF_SB_CCU));
+}
+
+static inline void vlv_dpio_get(struct drm_i915_private *i915)
+{
+	vlv_iosf_sb_get(i915, BIT(VLV_IOSF_SB_DPIO));
+}
+
+u32 vlv_dpio_read(struct drm_i915_private *i915, enum pipe pipe, int reg);
+void vlv_dpio_write(struct drm_i915_private *i915,
+		    enum pipe pipe, int reg, u32 val);
+
+static inline void vlv_dpio_put(struct drm_i915_private *i915)
+{
+	vlv_iosf_sb_put(i915, BIT(VLV_IOSF_SB_DPIO));
+}
+
+static inline void vlv_flisdsi_get(struct drm_i915_private *i915)
+{
+	vlv_iosf_sb_get(i915, BIT(VLV_IOSF_SB_FLISDSI));
+}
+
+u32 vlv_flisdsi_read(struct drm_i915_private *i915, u32 reg);
+void vlv_flisdsi_write(struct drm_i915_private *i915, u32 reg, u32 val);
+
+static inline void vlv_flisdsi_put(struct drm_i915_private *i915)
+{
+	vlv_iosf_sb_put(i915, BIT(VLV_IOSF_SB_FLISDSI));
+}
+
+static inline void vlv_nc_get(struct drm_i915_private *i915)
+{
+	vlv_iosf_sb_get(i915, BIT(VLV_IOSF_SB_NC));
+}
+
+u32 vlv_nc_read(struct drm_i915_private *i915, u8 addr);
+
+static inline void vlv_nc_put(struct drm_i915_private *i915)
+{
+	vlv_iosf_sb_put(i915, BIT(VLV_IOSF_SB_NC));
+}
+
+static inline void vlv_punit_get(struct drm_i915_private *i915)
+{
+	vlv_iosf_sb_get(i915, BIT(VLV_IOSF_SB_PUNIT));
+}
+
+u32 vlv_punit_read(struct drm_i915_private *i915, u32 addr);
+int vlv_punit_write(struct drm_i915_private *i915, u32 addr, u32 val);
+
+static inline void vlv_punit_put(struct drm_i915_private *i915)
+{
+	vlv_iosf_sb_put(i915, BIT(VLV_IOSF_SB_PUNIT));
+}
+
+#endif /* _VLV_SIDEBAND_H_ */