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// SPDX-License-Identifier: GPL-2.0-only
/**
* Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
*
* @File ctamixer.c
*
* @Brief
* This file contains the implementation of the Audio Mixer
* resource management object.
*
* @Author Liu Chun
* @Date May 21 2008
*/
#include "ctamixer.h"
#include "cthardware.h"
#include <linux/slab.h>
#define AMIXER_RESOURCE_NUM 256
#define SUM_RESOURCE_NUM 256
#define AMIXER_Y_IMMEDIATE 1
#define BLANK_SLOT 4094
static int amixer_master(struct rsc *rsc)
{
rsc->conj = 0;
return rsc->idx = container_of(rsc, struct amixer, rsc)->idx[0];
}
static int amixer_next_conj(struct rsc *rsc)
{
rsc->conj++;
return container_of(rsc, struct amixer, rsc)->idx[rsc->conj];
}
static int amixer_index(const struct rsc *rsc)
{
return container_of(rsc, struct amixer, rsc)->idx[rsc->conj];
}
static int amixer_output_slot(const struct rsc *rsc)
{
return (amixer_index(rsc) << 4) + 0x4;
}
static const struct rsc_ops amixer_basic_rsc_ops = {
.master = amixer_master,
.next_conj = amixer_next_conj,
.index = amixer_index,
.output_slot = amixer_output_slot,
};
static int amixer_set_input(struct amixer *amixer, struct rsc *rsc)
{
struct hw *hw;
hw = amixer->rsc.hw;
hw->amixer_set_mode(amixer->rsc.ctrl_blk, AMIXER_Y_IMMEDIATE);
amixer->input = rsc;
if (!rsc)
hw->amixer_set_x(amixer->rsc.ctrl_blk, BLANK_SLOT);
else
hw->amixer_set_x(amixer->rsc.ctrl_blk,
rsc->ops->output_slot(rsc));
return 0;
}
/* y is a 14-bit immediate constant */
static int amixer_set_y(struct amixer *amixer, unsigned int y)
{
struct hw *hw;
hw = amixer->rsc.hw;
hw->amixer_set_y(amixer->rsc.ctrl_blk, y);
return 0;
}
static int amixer_set_invalid_squash(struct amixer *amixer, unsigned int iv)
{
struct hw *hw;
hw = amixer->rsc.hw;
hw->amixer_set_iv(amixer->rsc.ctrl_blk, iv);
return 0;
}
static int amixer_set_sum(struct amixer *amixer, struct sum *sum)
{
struct hw *hw;
hw = amixer->rsc.hw;
amixer->sum = sum;
if (!sum) {
hw->amixer_set_se(amixer->rsc.ctrl_blk, 0);
} else {
hw->amixer_set_se(amixer->rsc.ctrl_blk, 1);
hw->amixer_set_sadr(amixer->rsc.ctrl_blk,
sum->rsc.ops->index(&sum->rsc));
}
return 0;
}
static int amixer_commit_write(struct amixer *amixer)
{
struct hw *hw;
unsigned int index;
int i;
struct rsc *input;
struct sum *sum;
hw = amixer->rsc.hw;
input = amixer->input;
sum = amixer->sum;
/* Program master and conjugate resources */
amixer->rsc.ops->master(&amixer->rsc);
if (input)
input->ops->master(input);
if (sum)
sum->rsc.ops->master(&sum->rsc);
for (i = 0; i < amixer->rsc.msr; i++) {
hw->amixer_set_dirty_all(amixer->rsc.ctrl_blk);
if (input) {
hw->amixer_set_x(amixer->rsc.ctrl_blk,
input->ops->output_slot(input));
input->ops->next_conj(input);
}
if (sum) {
hw->amixer_set_sadr(amixer->rsc.ctrl_blk,
sum->rsc.ops->index(&sum->rsc));
sum->rsc.ops->next_conj(&sum->rsc);
}
index = amixer->rsc.ops->output_slot(&amixer->rsc);
hw->amixer_commit_write(hw, index, amixer->rsc.ctrl_blk);
amixer->rsc.ops->next_conj(&amixer->rsc);
}
amixer->rsc.ops->master(&amixer->rsc);
if (input)
input->ops->master(input);
if (sum)
sum->rsc.ops->master(&sum->rsc);
return 0;
}
static int amixer_commit_raw_write(struct amixer *amixer)
{
struct hw *hw;
unsigned int index;
hw = amixer->rsc.hw;
index = amixer->rsc.ops->output_slot(&amixer->rsc);
hw->amixer_commit_write(hw, index, amixer->rsc.ctrl_blk);
return 0;
}
static int amixer_get_y(struct amixer *amixer)
{
struct hw *hw;
hw = amixer->rsc.hw;
return hw->amixer_get_y(amixer->rsc.ctrl_blk);
}
static int amixer_setup(struct amixer *amixer, struct rsc *input,
unsigned int scale, struct sum *sum)
{
amixer_set_input(amixer, input);
amixer_set_y(amixer, scale);
amixer_set_sum(amixer, sum);
amixer_commit_write(amixer);
return 0;
}
static const struct amixer_rsc_ops amixer_ops = {
.set_input = amixer_set_input,
.set_invalid_squash = amixer_set_invalid_squash,
.set_scale = amixer_set_y,
.set_sum = amixer_set_sum,
.commit_write = amixer_commit_write,
.commit_raw_write = amixer_commit_raw_write,
.setup = amixer_setup,
.get_scale = amixer_get_y,
};
static int amixer_rsc_init(struct amixer *amixer,
const struct amixer_desc *desc,
struct amixer_mgr *mgr)
{
int err;
err = rsc_init(&amixer->rsc, amixer->idx[0],
AMIXER, desc->msr, mgr->mgr.hw);
if (err)
return err;
/* Set amixer specific operations */
amixer->rsc.ops = &amixer_basic_rsc_ops;
amixer->ops = &amixer_ops;
amixer->input = NULL;
amixer->sum = NULL;
amixer_setup(amixer, NULL, 0, NULL);
return 0;
}
static int amixer_rsc_uninit(struct amixer *amixer)
{
amixer_setup(amixer, NULL, 0, NULL);
rsc_uninit(&amixer->rsc);
amixer->ops = NULL;
amixer->input = NULL;
amixer->sum = NULL;
return 0;
}
static int get_amixer_rsc(struct amixer_mgr *mgr,
const struct amixer_desc *desc,
struct amixer **ramixer)
{
int err, i;
unsigned int idx;
struct amixer *amixer;
unsigned long flags;
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