audio-lnx: Rename folders to new flat structure.
Kernel audio drivers can be categorised into below folders. asoc - ALSA based drivers, asoc/codecs - codec drivers, ipc - APR IPC communication drivers, dsp - DSP low level drivers/Audio ION/ADSP Loader, dsp/codecs - Native encoders and decoders, soc - SoC based drivers(pinctrl/regmap/soundwire) Restructure drivers to above folder format. Include directories also follow above format. Change-Id: I8fa0857baaacd47db126fb5c1f1f5ed7e886dbc0 Signed-off-by: Laxminath Kasam <lkasam@codeaurora.org>
This commit is contained in:
Laxminath Kasam
committed by
Martin Fick
Martin Fick
parent
84f7f73144
commit
605b42f92c
316
dsp/adsp-loader.c
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316
dsp/adsp-loader.c
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@@ -0,0 +1,316 @@
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/*
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* Copyright (c) 2012-2014, 2017, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/err.h>
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#include <linux/delay.h>
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#include <linux/platform_device.h>
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#include <ipc/apr.h>
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#include <linux/of_device.h>
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#include <linux/sysfs.h>
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#include <linux/workqueue.h>
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#include <soc/qcom/subsystem_restart.h>
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#define Q6_PIL_GET_DELAY_MS 100
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#define BOOT_CMD 1
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#define IMAGE_UNLOAD_CMD 0
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static ssize_t adsp_boot_store(struct kobject *kobj,
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struct kobj_attribute *attr,
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const char *buf, size_t count);
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struct adsp_loader_private {
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void *pil_h;
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struct kobject *boot_adsp_obj;
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struct attribute_group *attr_group;
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};
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static struct kobj_attribute adsp_boot_attribute =
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__ATTR(boot, 0220, NULL, adsp_boot_store);
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static struct attribute *attrs[] = {
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&adsp_boot_attribute.attr,
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NULL,
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};
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static struct work_struct adsp_ldr_work;
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static struct platform_device *adsp_private;
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static void adsp_loader_unload(struct platform_device *pdev);
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static void adsp_load_fw(struct work_struct *adsp_ldr_work)
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{
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struct platform_device *pdev = adsp_private;
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struct adsp_loader_private *priv = NULL;
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const char *adsp_dt = "qcom,adsp-state";
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int rc = 0;
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u32 adsp_state;
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const char *img_name;
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if (!pdev) {
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dev_err(&pdev->dev, "%s: Platform device null\n", __func__);
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goto fail;
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}
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if (!pdev->dev.of_node) {
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dev_err(&pdev->dev,
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"%s: Device tree information missing\n", __func__);
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goto fail;
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}
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rc = of_property_read_u32(pdev->dev.of_node, adsp_dt, &adsp_state);
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if (rc) {
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dev_err(&pdev->dev,
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"%s: ADSP state = %x\n", __func__, adsp_state);
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goto fail;
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}
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rc = of_property_read_string(pdev->dev.of_node,
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"qcom,proc-img-to-load",
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&img_name);
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if (rc) {
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dev_dbg(&pdev->dev,
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"%s: loading default image ADSP\n", __func__);
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goto load_adsp;
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}
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if (!strcmp(img_name, "modem")) {
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/* adsp_state always returns "0". So load modem image based on
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* apr_modem_state to prevent loading of image twice
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*/
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adsp_state = apr_get_modem_state();
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if (adsp_state == APR_SUBSYS_DOWN) {
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priv = platform_get_drvdata(pdev);
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if (!priv) {
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dev_err(&pdev->dev,
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" %s: Private data get failed\n", __func__);
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goto fail;
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}
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priv->pil_h = subsystem_get("modem");
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if (IS_ERR(priv->pil_h)) {
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dev_err(&pdev->dev, "%s: pil get failed,\n",
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__func__);
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goto fail;
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}
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/* Set the state of the ADSP in APR driver */
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apr_set_modem_state(APR_SUBSYS_LOADED);
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} else if (adsp_state == APR_SUBSYS_LOADED) {
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dev_dbg(&pdev->dev,
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"%s: MDSP state = %x\n", __func__, adsp_state);
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}
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dev_dbg(&pdev->dev, "%s: Q6/MDSP image is loaded\n", __func__);
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return;
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}
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load_adsp:
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{
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adsp_state = apr_get_q6_state();
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if (adsp_state == APR_SUBSYS_DOWN) {
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priv = platform_get_drvdata(pdev);
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if (!priv) {
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dev_err(&pdev->dev,
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" %s: Private data get failed\n", __func__);
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goto fail;
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}
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priv->pil_h = subsystem_get("adsp");
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if (IS_ERR(priv->pil_h)) {
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dev_err(&pdev->dev, "%s: pil get failed,\n",
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__func__);
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goto fail;
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}
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/* Set the state of the ADSP in APR driver */
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apr_set_q6_state(APR_SUBSYS_LOADED);
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} else if (adsp_state == APR_SUBSYS_LOADED) {
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dev_dbg(&pdev->dev,
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"%s: ADSP state = %x\n", __func__, adsp_state);
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}
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dev_dbg(&pdev->dev, "%s: Q6/ADSP image is loaded\n", __func__);
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return;
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}
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fail:
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dev_err(&pdev->dev, "%s: Q6 image loading failed\n", __func__);
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}
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static void adsp_loader_do(struct platform_device *pdev)
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{
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schedule_work(&adsp_ldr_work);
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}
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static ssize_t adsp_boot_store(struct kobject *kobj,
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struct kobj_attribute *attr,
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const char *buf,
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size_t count)
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{
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int boot = 0;
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if (sscanf(buf, "%du", &boot) != 1) {
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pr_err("%s: failed to read boot info from string\n", __func__);
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return -EINVAL;
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}
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if (boot == BOOT_CMD) {
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pr_debug("%s: going to call adsp_loader_do\n", __func__);
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adsp_loader_do(adsp_private);
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} else if (boot == IMAGE_UNLOAD_CMD) {
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pr_debug("%s: going to call adsp_unloader\n", __func__);
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adsp_loader_unload(adsp_private);
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}
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return count;
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}
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static void adsp_loader_unload(struct platform_device *pdev)
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{
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struct adsp_loader_private *priv = NULL;
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priv = platform_get_drvdata(pdev);
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if (!priv)
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return;
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if (priv->pil_h) {
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dev_dbg(&pdev->dev, "%s: calling subsystem put\n", __func__);
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subsystem_put(priv->pil_h);
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priv->pil_h = NULL;
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}
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}
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static int adsp_loader_init_sysfs(struct platform_device *pdev)
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{
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int ret = -EINVAL;
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struct adsp_loader_private *priv = NULL;
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adsp_private = NULL;
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priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
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if (!priv) {
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ret = -ENOMEM;
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return ret;
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}
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platform_set_drvdata(pdev, priv);
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priv->pil_h = NULL;
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priv->boot_adsp_obj = NULL;
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priv->attr_group = devm_kzalloc(&pdev->dev,
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sizeof(*(priv->attr_group)),
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GFP_KERNEL);
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if (!priv->attr_group) {
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ret = -ENOMEM;
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goto error_return;
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}
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priv->attr_group->attrs = attrs;
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priv->boot_adsp_obj = kobject_create_and_add("boot_adsp", kernel_kobj);
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if (!priv->boot_adsp_obj) {
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dev_err(&pdev->dev, "%s: sysfs create and add failed\n",
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__func__);
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ret = -ENOMEM;
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goto error_return;
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}
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ret = sysfs_create_group(priv->boot_adsp_obj, priv->attr_group);
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if (ret) {
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dev_err(&pdev->dev, "%s: sysfs create group failed %d\n",
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__func__, ret);
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goto error_return;
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}
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adsp_private = pdev;
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return 0;
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error_return:
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if (priv->boot_adsp_obj) {
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kobject_del(priv->boot_adsp_obj);
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priv->boot_adsp_obj = NULL;
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}
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return ret;
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}
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static int adsp_loader_remove(struct platform_device *pdev)
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{
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struct adsp_loader_private *priv = NULL;
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priv = platform_get_drvdata(pdev);
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if (!priv)
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return 0;
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if (priv->pil_h) {
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subsystem_put(priv->pil_h);
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priv->pil_h = NULL;
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}
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if (priv->boot_adsp_obj) {
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sysfs_remove_group(priv->boot_adsp_obj, priv->attr_group);
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kobject_del(priv->boot_adsp_obj);
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priv->boot_adsp_obj = NULL;
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}
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return 0;
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}
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static int adsp_loader_probe(struct platform_device *pdev)
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{
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int ret = adsp_loader_init_sysfs(pdev);
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if (ret != 0) {
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dev_err(&pdev->dev, "%s: Error in initing sysfs\n", __func__);
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return ret;
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}
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INIT_WORK(&adsp_ldr_work, adsp_load_fw);
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return 0;
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}
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static const struct of_device_id adsp_loader_dt_match[] = {
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{ .compatible = "qcom,adsp-loader" },
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{ }
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};
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MODULE_DEVICE_TABLE(of, adsp_loader_dt_match);
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static struct platform_driver adsp_loader_driver = {
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.driver = {
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.name = "adsp-loader",
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.owner = THIS_MODULE,
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.of_match_table = adsp_loader_dt_match,
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},
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.probe = adsp_loader_probe,
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.remove = adsp_loader_remove,
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};
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static int __init adsp_loader_init(void)
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{
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return platform_driver_register(&adsp_loader_driver);
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}
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module_init(adsp_loader_init);
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static void __exit adsp_loader_exit(void)
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{
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platform_driver_unregister(&adsp_loader_driver);
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}
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module_exit(adsp_loader_exit);
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MODULE_DESCRIPTION("ADSP Loader module");
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MODULE_LICENSE("GPL v2");
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