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Commit e8507af2 authored by Chinmay Sawarkar's avatar Chinmay Sawarkar Committed by Vaibhav Deshu Venkatesh
Browse files

msm: vidc: Add snapshot of MSM video driver 



This is a snapshot from branch msm-4.14
'commit 195f5d0cdc2c ("cnss2: Do not handle MHI device
error during driver unloading")'.

CRs-Fixed: 2344373
Change-Id: Ifd98751c64924852de74a56f4827b0ec7b9eb291
Signed-off-by: default avatarTapas Kumar Kundu <tkundu@codeaurora.org>
Signed-off-by: default avatarVaibhav Deshu Venkatesh <vdeshuve@codeaurora.org>
Signed-off-by: default avatarChinmay Sawarkar <chinmays@codeaurora.org>
parent 9e86e31f

drivers/media/platform/msm/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -10,3 +10,4 @@ menuconfig SPECTRA_CAMERA 
      IFE and postprocessing drivers.



source "drivers/media/platform/msm/sde/Kconfig"

source "drivers/media/platform/msm/vidc/Kconfig"

drivers/media/platform/msm/Makefile

+6 −1
Original line number Diff line number Diff line
@@ -2,3 +2,8 @@ 


obj-y += sde/

obj-$(CONFIG_SPECTRA_CAMERA) += camera/

#

# Makefile for the qti specific video device drivers

# based on V4L2.

#

obj-$(CONFIG_MSM_VIDC_V4L2) += vidc/

drivers/media/platform/msm/vidc/Kconfig

0 → 100644
+12 −0
Original line number Diff line number Diff line 
# SPDX-License-Identifier: GPL-2.0

#

# VIDEO CORE

#



menuconfig MSM_VIDC_V4L2

    tristate "Qualcomm Technologies, Inc. MSM V4L2 based video driver"

        depends on ARCH_QCOM && VIDEO_V4L2

        select VIDEOBUF2_CORE

        help

          Enable support of MSM V4L2 video driver for

          Qualcomm Technologies, Inc.

drivers/media/platform/msm/vidc/Makefile

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+26 −0
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# SPDX-License-Identifier: GPL-2.0

ccflags-y += -I$(srctree)/drivers/media/platform/msm/vidc/ \

    -I$(srctree)/drivers/devfreq/



msm-vidc-objs := msm_v4l2_vidc.o \

                msm_v4l2_private.o \

                msm_vidc_platform.o \

                msm_vidc_common.o \

                msm_vidc.o \

                msm_vdec.o \

                msm_venc.o \

                msm_cvp.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_clocks.o \

                msm_vidc_ar50_dyn_gov.o \

                msm_vidc_dyn_gov.o



obj-$(CONFIG_MSM_VIDC_V4L2) := msm-vidc.o

drivers/media/platform/msm/vidc/fixedpoint.h

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+65 −0
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/* SPDX-License-Identifier: GPL-2.0 */

/*

 * Copyright (c) 2015-2018, The Linux Foundation. All rights reserved.

 */



#ifdef _FIXP_ARITH_H

#error "This implementation is meant to override fixp-arith.h, don't use both"

#endif



#ifndef _FIXEDPOINT_H_

#define _FIXEDPOINT_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