[PATCH 09/22] drm/i915: Create color management files

[Shashank Sharma <shashank.sharma@intel.com>]

This patch create new files intel_color_manager.c which
will contain the core color correction code for I915 driver
and its header intel_color_manager.h

The per color property patches coming up in this patch series
will fill the appropriate functions in this file.

Signed-off-by: Shashank Sharma <shashank.sharma@intel.com>
Signed-off-by: Kausal Malladi <kausalmalladi@gmail.com>
---
 drivers/gpu/drm/i915/Makefile              |  3 +-
 drivers/gpu/drm/i915/intel_color_manager.c | 33 ++++++++++++++++++++
 drivers/gpu/drm/i915/intel_color_manager.h | 50 ++++++++++++++++++++++++++++++
 3 files changed, 85 insertions(+), 1 deletion(-)
 create mode 100644 drivers/gpu/drm/i915/intel_color_manager.c
 create mode 100644 drivers/gpu/drm/i915/intel_color_manager.h

diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index 44d290a..56caf9e 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -64,7 +64,8 @@ i915-y += intel_audio.o \
 	  intel_overlay.o \
 	  intel_psr.o \
 	  intel_sideband.o \
-	  intel_sprite.o
+	  intel_sprite.o \
+	  intel_color_manager.o
 i915-$(CONFIG_ACPI)		+= intel_acpi.o intel_opregion.o
 i915-$(CONFIG_DRM_FBDEV_EMULATION)	+= intel_fbdev.o
 
diff --git a/drivers/gpu/drm/i915/intel_color_manager.c b/drivers/gpu/drm/i915/intel_color_manager.c
new file mode 100644
index 0000000..7357d99
--- /dev/null
+++ b/drivers/gpu/drm/i915/intel_color_manager.c
@@ -0,0 +1,33 @@
+/*
+ * Copyright © 2015 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Authors:
+ * Shashank Sharma <shashank.sharma@intel.com>
+ * Kausal Malladi <Kausal.Malladi@intel.com>
+ */
+
+#include "intel_color_manager.h"
+
+void intel_attach_color_properties_to_crtc(struct drm_device *dev,
+		struct drm_mode_object *mode_obj)
+{
+}
diff --git a/drivers/gpu/drm/i915/intel_color_manager.h b/drivers/gpu/drm/i915/intel_color_manager.h
new file mode 100644
index 0000000..eec52a7
--- /dev/null
+++ b/drivers/gpu/drm/i915/intel_color_manager.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright © 2015 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Authors:
+ * Shashank Sharma <shashank.sharma@intel.com>
+ * Kausal Malladi <Kausal.Malladi@intel.com>
+ */
+#include <drm/drmP.h>
+#include <drm/drm_crtc_helper.h>
+#include "i915_drv.h"
+
+/* Color management bit utilities */
+#define GET_BIT_MASK(n) ((1 << n) - 1)
+
+/* Read bits of a word from bit no. 'start'(lsb) till 'n' bits */
+#define GET_BITS(x, start, nbits) ((x >> start) & GET_BIT_MASK(nbits))
+
+/* Round off by adding 1 to the immediate lower bit */
+#define GET_BITS_ROUNDOFF(x, start, nbits) \
+	((GET_BITS(x, start, (nbits + 1)) + 1) >> 1)
+
+/* Clear bits of a word from bit no. 'start' till nbits */
+#define CLEAR_BITS(x, start, nbits) ( \
+		x &= ~((GET_BIT_MASK(nbits) << start)))
+
+/* Write bit_pattern of no_bits bits in a target word */
+#define SET_BITS(target, bit_pattern, start_bit, no_bits) \
+		do { \
+			CLEAR_BITS(target, start_bit, no_bits); \
+			target |= (bit_pattern << start_bit);  \
+		} while (0)
-- 
1.9.1

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