--- /dev/null
+/**
+ * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
+ *
+ * This source file is released under GPL v2 license (no other versions).
+ * See the COPYING file included in the main directory of this source
+ * distribution for the license terms and conditions.
+ *
+ * @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 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 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;
+
+ *ramixer = NULL;
+
+ /* Allocate mem for amixer resource */
+ amixer = kzalloc(sizeof(*amixer), GFP_KERNEL);
+ if (!amixer)
+ return -ENOMEM;
+
+ /* Check whether there are sufficient
+ * amixer resources to meet request. */
+ err = 0;
+ spin_lock_irqsave(&mgr->mgr_lock, flags);
+ for (i = 0; i < desc->msr; i++) {
+ err = mgr_get_resource(&mgr->mgr, 1, &idx);
+ if (err)
+ break;
+
+ amixer->idx[i] = idx;
+ }
+ spin_unlock_irqrestore(&mgr->mgr_lock, flags);
+ if (err) {
+ dev_err(mgr->card->dev,
+ "Can't meet AMIXER resource request!\n");
+ goto error;
+ }
+
+ err = amixer_rsc_init(amixer, desc, mgr);
+ if (err)
+ goto error;
+
+ *ramixer = amixer;
+
+ return 0;
+
+error:
+ spin_lock_irqsave(&mgr->mgr_lock, flags);
+ for (i--; i >= 0; i--)
+ mgr_put_resource(&mgr->mgr, 1, amixer->idx[i]);
+
+ spin_unlock_irqrestore(&mgr->mgr_lock, flags);
+ kfree(amixer);
+ return err;
+}
+
+static int put_amixer_rsc(struct amixer_mgr *mgr, struct amixer *amixer)
+{
+ unsigned long flags;
+ int i;
+
+ spin_lock_irqsave(&mgr->mgr_lock, flags);
+ for (i = 0; i < amixer->rsc.msr; i++)
+ mgr_put_resource(&mgr->mgr, 1, amixer->idx[i]);
+
+ spin_unlock_irqrestore(&mgr->mgr_lock, flags);
+ amixer_rsc_uninit(amixer);
+ kfree(amixer);
+
+ return 0;
+}
+
+int amixer_mgr_create(struct hw *hw, struct amixer_mgr **ramixer_mgr)
+{
+ int err;
+ struct amixer_mgr *amixer_mgr;
+
+ *ramixer_mgr = NULL;
+ amixer_mgr = kzalloc(sizeof(*amixer_mgr), GFP_KERNEL);
+ if (!amixer_mgr)
+ return -ENOMEM;
+
+ err = rsc_mgr_init(&amixer_mgr->mgr, AMIXER, AMIXER_RESOURCE_NUM, hw);
+ if (err)
+ goto error;
+
+ spin_lock_init(&amixer_mgr->mgr_lock);
+
+ amixer_mgr->get_amixer = get_amixer_rsc;
+ amixer_mgr->put_amixer = put_amixer_rsc;
+ amixer_mgr->card = hw->card;
+
+ *ramixer_mgr = amixer_mgr;
+
+ return 0;
+
+error:
+ kfree(amixer_mgr);
+ return err;
+}
+
+int amixer_mgr_destroy(struct amixer_mgr *amixer_mgr)
+{
+ rsc_mgr_uninit(&amixer_mgr->mgr);
+ kfree(amixer_mgr);
+ return 0;
+}
+
+/* SUM resource management */
+
+static int sum_master(struct rsc *rsc)
+{
+ rsc->conj = 0;
+ return rsc->idx = container_of(rsc, struct sum, rsc)->idx[0];
+}
+
+static int sum_next_conj(struct rsc *rsc)
+{
+ rsc->conj++;
+ return container_of(rsc, struct sum, rsc)->idx[rsc->conj];
+}
+
+static int sum_index(const struct rsc *rsc)
+{
+ return container_of(rsc, struct sum, rsc)->idx[rsc->conj];
+}
+
+static int sum_output_slot(const struct rsc *rsc)
+{
+ return (sum_index(rsc) << 4) + 0xc;
+}
+
+static struct rsc_ops sum_basic_rsc_ops = {
+ .master = sum_master,
+ .next_conj = sum_next_conj,
+ .index = sum_index,
+ .output_slot = sum_output_slot,
+};
+
+static int sum_rsc_init(struct sum *sum,
+ const struct sum_desc *desc,
+ struct sum_mgr *mgr)
+{
+ int err;
+
+ err = rsc_init(&sum->rsc, sum->idx[0], SUM, desc->msr, mgr->mgr.hw);
+ if (err)
+ return err;
+
+ sum->rsc.ops = &sum_basic_rsc_ops;
+
+ return 0;
+}
+
+static int sum_rsc_uninit(struct sum *sum)
+{
+ rsc_uninit(&sum->rsc);
+ return 0;
+}
+
+static int get_sum_rsc(struct sum_mgr *mgr,
+ const struct sum_desc *desc,
+ struct sum **rsum)
+{
+ int err, i;
+ unsigned int idx;
+ struct sum *sum;
+ unsigned long flags;
+
+ *rsum = NULL;
+
+ /* Allocate mem for sum resource */
+ sum = kzalloc(sizeof(*sum), GFP_KERNEL);
+ if (!sum)
+ return -ENOMEM;
+
+ /* Check whether there are sufficient sum resources to meet request. */
+ err = 0;
+ spin_lock_irqsave(&mgr->mgr_lock, flags);
+ for (i = 0; i < desc->msr; i++) {
+ err = mgr_get_resource(&mgr->mgr, 1, &idx);
+ if (err)
+ break;
+
+ sum->idx[i] = idx;
+ }
+ spin_unlock_irqrestore(&mgr->mgr_lock, flags);
+ if (err) {
+ dev_err(mgr->card->dev,
+ "Can't meet SUM resource request!\n");
+ goto error;
+ }
+
+ err = sum_rsc_init(sum, desc, mgr);
+ if (err)
+ goto error;
+
+ *rsum = sum;
+
+ return 0;
+
+error:
+ spin_lock_irqsave(&mgr->mgr_lock, flags);
+ for (i--; i >= 0; i--)
+ mgr_put_resource(&mgr->mgr, 1, sum->idx[i]);
+
+ spin_unlock_irqrestore(&mgr->mgr_lock, flags);
+ kfree(sum);
+ return err;
+}
+
+static int put_sum_rsc(struct sum_mgr *mgr, struct sum *sum)
+{
+ unsigned long flags;
+ int i;
+
+ spin_lock_irqsave(&mgr->mgr_lock, flags);
+ for (i = 0; i < sum->rsc.msr; i++)
+ mgr_put_resource(&mgr->mgr, 1, sum->idx[i]);
+
+ spin_unlock_irqrestore(&mgr->mgr_lock, flags);
+ sum_rsc_uninit(sum);
+ kfree(sum);
+
+ return 0;
+}
+
+int sum_mgr_create(struct hw *hw, struct sum_mgr **rsum_mgr)
+{
+ int err;
+ struct sum_mgr *sum_mgr;
+
+ *rsum_mgr = NULL;
+ sum_mgr = kzalloc(sizeof(*sum_mgr), GFP_KERNEL);
+ if (!sum_mgr)
+ return -ENOMEM;
+
+ err = rsc_mgr_init(&sum_mgr->mgr, SUM, SUM_RESOURCE_NUM, hw);
+ if (err)
+ goto error;
+
+ spin_lock_init(&sum_mgr->mgr_lock);
+
+ sum_mgr->get_sum = get_sum_rsc;
+ sum_mgr->put_sum = put_sum_rsc;
+ sum_mgr->card = hw->card;
+
+ *rsum_mgr = sum_mgr;
+
+ return 0;
+
+error:
+ kfree(sum_mgr);
+ return err;
+}
+
+int sum_mgr_destroy(struct sum_mgr *sum_mgr)
+{
+ rsc_mgr_uninit(&sum_mgr->mgr);
+ kfree(sum_mgr);
+ return 0;
+}
+
Code Review / kvmfornfv.git / blobdiff