cregit-Linux how code gets into the kernel

Release 4.17 drivers/gpu/drm/amd/display/dc/i2caux/dce110/i2c_sw_engine_dce110.c

/*
 * Copyright 2012-15 Advanced Micro Devices, Inc.
 *
 * 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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: AMD
 *
 */

#include "dm_services.h"

/*
 * Pre-requisites: headers required by header of this unit
 */
#include "include/i2caux_interface.h"
#include "../engine.h"
#include "../i2c_engine.h"
#include "../i2c_sw_engine.h"

/*
 * Header of this unit
 */

#include "i2c_sw_engine_dce110.h"

/*
 * Post-requisites: headers required by this unit
 */

/*
 * This unit
 */

/*
 * @brief
 * Cast 'struct i2c_sw_engine *'
 * to 'struct i2c_sw_engine_dce110 *'
 */

#define FROM_I2C_SW_ENGINE(ptr) \
	container_of((ptr), struct i2c_sw_engine_dce110, base)
/*
 * @brief
 * Cast 'struct i2c_engine *'
 * to 'struct i2c_sw_engine_dce80 *'
 */

#define FROM_I2C_ENGINE(ptr) \
	FROM_I2C_SW_ENGINE(container_of((ptr), struct i2c_sw_engine, base))

/*
 * @brief
 * Cast 'struct engine *'
 * to 'struct i2c_sw_engine_dce80 *'
 */

#define FROM_ENGINE(ptr) \
	FROM_I2C_ENGINE(container_of((ptr), struct i2c_engine, base))


static void release_engine( struct engine *engine) { }

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static void destruct( struct i2c_sw_engine_dce110 *engine) { dal_i2c_sw_engine_destruct(&engine->base); }

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static void destroy( struct i2c_engine **engine) { struct i2c_sw_engine_dce110 *sw_engine = FROM_I2C_ENGINE(*engine); destruct(sw_engine); kfree(sw_engine); *engine = NULL; }

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static bool acquire_engine( struct i2c_engine *engine, struct ddc *ddc_handle) { return dal_i2caux_i2c_sw_engine_acquire_engine(engine, ddc_handle); }

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static const struct i2c_engine_funcs i2c_engine_funcs = { .acquire_engine = acquire_engine, .destroy = destroy, .get_speed = dal_i2c_sw_engine_get_speed, .set_speed = dal_i2c_sw_engine_set_speed, .setup_engine = dal_i2c_engine_setup_i2c_engine, .submit_channel_request = dal_i2c_sw_engine_submit_channel_request, .process_channel_reply = dal_i2c_engine_process_channel_reply, .get_channel_status = dal_i2c_sw_engine_get_channel_status, }; static const struct engine_funcs engine_funcs = { .release_engine = release_engine, .get_engine_type = dal_i2c_sw_engine_get_engine_type, .acquire = dal_i2c_engine_acquire, .submit_request = dal_i2c_sw_engine_submit_request, };
static void construct( struct i2c_sw_engine_dce110 *engine_dce110, const struct i2c_sw_engine_dce110_create_arg *arg_dce110) { struct i2c_sw_engine_create_arg arg_base; arg_base.ctx = arg_dce110->ctx; arg_base.default_speed = arg_dce110->default_speed; dal_i2c_sw_engine_construct(&engine_dce110->base, &arg_base); /*struct engine struct engine_funcs*/ engine_dce110->base.base.base.funcs = &engine_funcs; /*struct i2c_engine struct i2c_engine_funcs*/ engine_dce110->base.base.funcs = &i2c_engine_funcs; engine_dce110->base.default_speed = arg_dce110->default_speed; engine_dce110->engine_id = arg_dce110->engine_id; }

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struct i2c_engine *dal_i2c_sw_engine_dce110_create( const struct i2c_sw_engine_dce110_create_arg *arg) { struct i2c_sw_engine_dce110 *engine_dce110; if (!arg) { ASSERT_CRITICAL(false); return NULL; } engine_dce110 = kzalloc(sizeof(struct i2c_sw_engine_dce110), GFP_KERNEL); if (!engine_dce110) { ASSERT_CRITICAL(false); return NULL; } construct(engine_dce110, arg); return &engine_dce110->base.base; }

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Harry Wentland7598.68%266.67%
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Harry Wentland38399.48%266.67%
Dave Airlie20.52%133.33%
Total385100.00%3100.00%
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