vidc_3x: Add snapshot of video driver

This is snapshot of the video driver as of msm-4.14(vidc_3x)
commit 9dc1a255ba77c95 (" Fix qbuf error in gralloc buffers encoding").

Change-Id: I146b66cb0e0ce44d8414efaa8748c2de87b9fc74
Signed-off-by: Vasantha Balla <[email protected]>

arch/arm64/configs/vendor/sdm660-perf_defconfig

@@ -410,6 +410,8 @@ CONFIG_VIDEO_FIXED_MINOR_RANGES=y
 CONFIG_MEDIA_USB_SUPPORT=y
 CONFIG_USB_VIDEO_CLASS=y
 CONFIG_V4L_PLATFORM_DRIVERS=y
+CONFIG_MSM_VIDC_3X_GOVERNORS=y
+CONFIG_MSM_VIDC_3X_V4L2=y
 CONFIG_DVB_MPQ=m
 CONFIG_DVB_MPQ_DEMUX=m
 CONFIG_FB=y

arch/arm64/configs/vendor/sdm660_defconfig

@@ -411,6 +411,8 @@ CONFIG_VIDEO_FIXED_MINOR_RANGES=y
 CONFIG_MEDIA_USB_SUPPORT=y
 CONFIG_USB_VIDEO_CLASS=y
 CONFIG_V4L_PLATFORM_DRIVERS=y
+CONFIG_MSM_VIDC_3X_GOVERNORS=y
+CONFIG_MSM_VIDC_3X_V4L2=y
 CONFIG_DVB_MPQ=m
 CONFIG_DVB_MPQ_DEMUX=m
 CONFIG_FB=y

drivers/media/platform/msm/Kconfig

@@ -9,6 +9,7 @@ menuconfig SPECTRA_CAMERA
       Enabling this adds support for the camera driver stack including sensor,
       IFE and postprocessing drivers.
 
+source "drivers/media/platform/msm/vidc_3x/Kconfig"
 source "drivers/media/platform/msm/cvp/Kconfig"
 source "drivers/media/platform/msm/npu/Kconfig"
 source "drivers/media/platform/msm/synx/Kconfig"

drivers/media/platform/msm/Makefile

@@ -4,6 +4,7 @@
 # Makefile for the qti specific video device drivers
 # based on V4L2.
 #
+obj-$(CONFIG_MSM_VIDC_3X_V4L2) += vidc_3x/
 obj-$(CONFIG_MSM_CVP_V4L2) += cvp/
 obj-$(CONFIG_MSM_NPU) += npu/
 obj-$(CONFIG_MSM_GLOBAL_SYNX) += synx/

drivers/media/platform/msm/vidc_3x/Kconfig

@@ -0,0 +1,14 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# VIDEO CORE
+#
+source "drivers/media/platform/msm/vidc_3x/governors/Kconfig"
+
+menuconfig MSM_VIDC_3X_V4L2
+	tristate "Qualcomm Technologies, Inc. MSM V4L2 3X based video driver"
+		depends on ARCH_QCOM && VIDEO_V4L2
+		select VIDEOBUF2_CORE
+	help
+		Enable support of MSM V4L2 3X based video driver for
+		Qualcomm Technologies, Inc.
+

drivers/media/platform/msm/vidc_3x/Makefile

@@ -0,0 +1,19 @@
+# SPDX-License-Identifier: GPL-2.0-only
+obj-$(CONFIG_MSM_VIDC_3X_V4L2) := 	msm_v4l2_vidc.o \
+				msm_vidc_common.o \
+				msm_vidc.o \
+				msm_vdec.o \
+				msm_venc.o \
+				msm_smem.o \
+				msm_vidc_debug.o \
+				msm_vidc_res_parse.o \
+				venus_hfi.o \
+				hfi_response_handler.o \
+				hfi_packetization.o \
+				vidc_hfi.o \
+				venus_boot.o \
+				msm_vidc_dcvs.o
+
+obj-$(CONFIG_MSM_VIDC_3X_V4L2) += governors/
+
+obj-$(CONFIG_MSM_VIDC_VMEM) += vmem/

drivers/media/platform/msm/vidc_3x/governors/Kconfig

@@ -0,0 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
+menuconfig MSM_VIDC_3X_GOVERNORS
+	tristate "Clock and bandwidth governors for QTI MSM V4L2 based video driver"
+	depends on MSM_VIDC_3X_V4L2 && PM_DEVFREQ
+	help
+	Chooses a set of devfreq governors aimed at providing accurate bandwidth
+	or clock frequency values for MSM V4L2 video driver.

drivers/media/platform/msm/vidc_3x/governors/Makefile

@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
+ccflags-y := -I$(srctree)/drivers/devfreq/ \
+	-I$(srctree)/drivers/media/platform/msm/vidc_3x/
+
+obj-$(CONFIG_MSM_VIDC_3X_GOVERNORS) := msm_vidc_dyn_gov.o \
+	msm_vidc_table_gov.o

drivers/media/platform/msm/vidc_3x/governors/fixedpoint.h

@@ -0,0 +1,74 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2015, 2019-2020, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifdef _FIXP_ARITH_H
+#error "This implementation is meant to override fixp-arith.h, don't use both"
+#endif
+
+#ifndef __FP_H__
+#define __FP_H__
+
+/*
+ * Normally would typedef'ed, but checkpatch doesn't like typedef.
+ * Also should be normally typedef'ed to intmax_t but that doesn't seem to be
+ * available in the kernel
+ */
+#define fp_t size_t
+
+/* (Arbitrarily) make the first 25% of the bits to be the fractional bits */
+#define FP_FRACTIONAL_BITS ((sizeof(fp_t) * 8) / 4)
+
+#define FP(__i, __f_n, __f_d) \
+	((((fp_t)(__i)) << FP_FRACTIONAL_BITS) + \
+	(((__f_n) << FP_FRACTIONAL_BITS) / (__f_d)))
+
+#define FP_INT(__i) FP(__i, 0, 1)
+#define FP_ONE FP_INT(1)
+#define FP_ZERO FP_INT(0)
+
+static inline size_t fp_frac_base(void)
+{
+	return GENMASK(FP_FRACTIONAL_BITS - 1, 0);
+}
+
+static inline size_t fp_frac(fp_t a)
+{
+	return a & GENMASK(FP_FRACTIONAL_BITS - 1, 0);
+}
+
+static inline size_t fp_int(fp_t a)
+{
+	return a >> FP_FRACTIONAL_BITS;
+}
+
+static inline size_t fp_round(fp_t a)
+{
+	/* is the fractional part >= frac_max / 2? */
+	bool round_up = fp_frac(a) >= fp_frac_base() / 2;
+
+	return fp_int(a) + round_up;
+}
+
+static inline fp_t fp_mult(fp_t a, fp_t b)
+{
+	return (a * b) >> FP_FRACTIONAL_BITS;
+}
+
+
+static inline fp_t fp_div(fp_t a, fp_t b)
+{
+	return (a << FP_FRACTIONAL_BITS) / b;
+}
+
+#endif