6be85d4cab
The schedule_work of adsp loader boot will block machine driver probing need add new boot cmd without schedule_work to accelerate early audio. Change-Id: I5d344c56ef19985fca9d047687f4ea96a879dc27 Signed-off-by: Deru Wang <deruwang@codeaurora.org>
542 lines
13 KiB
C
Executable File
542 lines
13 KiB
C
Executable File
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (c) 2012-2014, 2017-2021, The Linux Foundation. All rights reserved.
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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/string.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 <linux/nvmem-consumer.h>
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#include <linux/slab.h>
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#include <soc/qcom/boot_stats.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 SSR_RESET_CMD 1
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#define IMAGE_UNLOAD_CMD 0
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#define MAX_FW_IMAGES 4
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#define BOOT_FOR_EARLY_CHIME_CMD 2
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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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static ssize_t adsp_ssr_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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char *adsp_fw_name;
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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 kobj_attribute adsp_ssr_attribute =
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__ATTR(ssr, 0220, NULL, adsp_ssr_store);
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static struct attribute *attrs[] = {
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&adsp_boot_attribute.attr,
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&adsp_ssr_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 int adsp_restart_subsys(void)
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{
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struct subsys_device *adsp_dev = NULL;
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struct platform_device *pdev = adsp_private;
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struct adsp_loader_private *priv = NULL;
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int rc = -EINVAL;
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priv = platform_get_drvdata(pdev);
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if (!priv)
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return rc;
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adsp_dev = (struct subsys_device *)priv->pil_h;
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if (!adsp_dev)
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return rc;
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/* subsystem_restart_dev has worker queue to handle */
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rc = subsystem_restart_dev(adsp_dev);
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if (rc) {
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dev_err(&pdev->dev, "subsystem_restart_dev failed\n");
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return rc;
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}
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pr_debug("%s :: Restart Success %d\n", __func__, rc);
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return rc;
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}
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static void adsp_load_state_notify_cb(enum apr_subsys_state state,
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void *phandle)
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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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priv = platform_get_drvdata(pdev);
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if (!priv)
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return;
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if (phandle != adsp_private) {
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pr_err("%s:callback is not for adsp-loader client\n", __func__);
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return;
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}
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pr_debug("%s:: Received cb for ADSP restart\n", __func__);
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if (state == APR_SUBSYS_UNKNOWN)
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adsp_restart_subsys();
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else
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pr_debug("%s:Ignore restart request for ADSP", __func__);
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}
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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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void *padsp_restart_cb = &adsp_load_state_notify_cb;
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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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goto success;
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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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place_marker("M - Start ADSP");
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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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if (!priv->adsp_fw_name) {
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dev_dbg(&pdev->dev, "%s: Load default ADSP\n",
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__func__);
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priv->pil_h = subsystem_get("adsp");
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} else {
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dev_dbg(&pdev->dev, "%s: Load ADSP with fw name %s\n",
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__func__, priv->adsp_fw_name);
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priv->pil_h = subsystem_get_with_fwname("adsp", priv->adsp_fw_name);
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}
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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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} 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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apr_register_adsp_state_cb(padsp_restart_cb, adsp_private);
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goto success;
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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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success:
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return;
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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_ssr_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 ssr_command = 0;
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struct platform_device *pdev = adsp_private;
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struct adsp_loader_private *priv = NULL;
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int rc = -EINVAL;
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dev_dbg(&pdev->dev, "%s: going to call adsp ssr\n ", __func__);
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priv = platform_get_drvdata(pdev);
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if (!priv)
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return rc;
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if (kstrtoint(buf, 10, &ssr_command) < 0)
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return -EINVAL;
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if (ssr_command != SSR_RESET_CMD)
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return -EINVAL;
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adsp_restart_subsys();
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dev_dbg(&pdev->dev, "%s :: ADSP restarted\n", __func__);
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return count;
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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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} else if (boot == BOOT_FOR_EARLY_CHIME_CMD) {
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pr_debug("%s: going to call adsp_load_fw\n", __func__);
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adsp_load_fw(NULL);
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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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struct adsp_loader_private *priv = NULL;
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struct nvmem_cell *cell;
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size_t len;
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u32 *buf;
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const char **adsp_fw_name_array = NULL;
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int adsp_fw_cnt;
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u32* adsp_fw_bit_values = NULL;
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int i;
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int fw_name_size;
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u32 adsp_var_idx = 0;
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int ret = 0;
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u32 adsp_fuse_not_supported = 0;
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const char *adsp_fw_name;
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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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priv = platform_get_drvdata(pdev);
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/* get adsp variant idx */
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cell = nvmem_cell_get(&pdev->dev, "adsp_variant");
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if (IS_ERR_OR_NULL(cell)) {
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dev_dbg(&pdev->dev, "%s: FAILED to get nvmem cell \n",
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__func__);
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/*
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* When ADSP variant read from fuse register is not
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* supported, check if image with different fw image
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* name needs to be loaded
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*/
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ret = of_property_read_u32(pdev->dev.of_node,
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"adsp-fuse-not-supported",
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&adsp_fuse_not_supported);
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if (ret) {
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dev_dbg(&pdev->dev,
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"%s: adsp_fuse_not_supported prop not found %d\n",
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__func__, ret);
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goto wqueue;
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}
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if (adsp_fuse_not_supported) {
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/* Read ADSP firmware image name */
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ret = of_property_read_string(pdev->dev.of_node,
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"adsp-fw-name",
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&adsp_fw_name);
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if (ret < 0) {
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dev_dbg(&pdev->dev, "%s: unable to read fw-name\n",
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__func__);
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goto wqueue;
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}
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fw_name_size = strlen(adsp_fw_name) + 1;
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priv->adsp_fw_name = devm_kzalloc(&pdev->dev,
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fw_name_size,
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GFP_KERNEL);
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if (!priv->adsp_fw_name)
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goto wqueue;
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strlcpy(priv->adsp_fw_name, adsp_fw_name,
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fw_name_size);
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}
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goto wqueue;
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}
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buf = nvmem_cell_read(cell, &len);
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nvmem_cell_put(cell);
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if (IS_ERR_OR_NULL(buf)) {
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dev_dbg(&pdev->dev, "%s: FAILED to read nvmem cell \n", __func__);
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goto wqueue;
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}
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if (len <= 0 || len > sizeof(u32)) {
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dev_dbg(&pdev->dev, "%s: nvmem cell length out of range: %d\n",
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__func__, len);
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kfree(buf);
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goto wqueue;
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}
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memcpy(&adsp_var_idx, buf, len);
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kfree(buf);
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/* Get count of fw images */
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adsp_fw_cnt = of_property_count_strings(pdev->dev.of_node,
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"adsp-fw-names");
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if (adsp_fw_cnt <= 0 || adsp_fw_cnt > MAX_FW_IMAGES) {
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dev_dbg(&pdev->dev, "%s: Invalid number of fw images %d",
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__func__, adsp_fw_cnt);
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goto wqueue;
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}
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adsp_fw_bit_values = devm_kzalloc(&pdev->dev,
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adsp_fw_cnt * sizeof(u32), GFP_KERNEL);
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if (!adsp_fw_bit_values)
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goto wqueue;
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/* Read bit values corresponding to each firmware image entry */
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ret = of_property_read_u32_array(pdev->dev.of_node,
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"adsp-fw-bit-values",
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adsp_fw_bit_values,
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adsp_fw_cnt);
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if (ret) {
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dev_dbg(&pdev->dev, "%s: unable to read fw-bit-values\n",
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__func__);
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goto wqueue;
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}
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adsp_fw_name_array = devm_kzalloc(&pdev->dev,
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adsp_fw_cnt * sizeof(char *), GFP_KERNEL);
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if (!adsp_fw_name_array)
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goto wqueue;
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/* Read ADSP firmware image names */
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ret = of_property_read_string_array(pdev->dev.of_node,
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"adsp-fw-names",
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adsp_fw_name_array,
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adsp_fw_cnt);
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if (ret < 0) {
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dev_dbg(&pdev->dev, "%s: unable to read fw-names\n",
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__func__);
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goto wqueue;
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}
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for (i = 0; i < adsp_fw_cnt; i++) {
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if (adsp_fw_bit_values[i] == adsp_var_idx) {
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fw_name_size = strlen(adsp_fw_name_array[i]) + 1;
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priv->adsp_fw_name = devm_kzalloc(&pdev->dev,
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fw_name_size,
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GFP_KERNEL);
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if (!priv->adsp_fw_name)
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goto wqueue;
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strlcpy(priv->adsp_fw_name, adsp_fw_name_array[i],
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fw_name_size);
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break;
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}
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}
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wqueue:
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INIT_WORK(&adsp_ldr_work, adsp_load_fw);
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if (adsp_fw_bit_values)
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devm_kfree(&pdev->dev, adsp_fw_bit_values);
|
|
if (adsp_fw_name_array)
|
|
devm_kfree(&pdev->dev, adsp_fw_name_array);
|
|
return 0;
|
|
|
|
}
|
|
|
|
static const struct of_device_id adsp_loader_dt_match[] = {
|
|
{ .compatible = "qcom,adsp-loader" },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(of, adsp_loader_dt_match);
|
|
|
|
static struct platform_driver adsp_loader_driver = {
|
|
.driver = {
|
|
.name = "adsp-loader",
|
|
.owner = THIS_MODULE,
|
|
.of_match_table = adsp_loader_dt_match,
|
|
.suppress_bind_attrs = true,
|
|
},
|
|
.probe = adsp_loader_probe,
|
|
.remove = adsp_loader_remove,
|
|
};
|
|
|
|
static int __init adsp_loader_init(void)
|
|
{
|
|
return platform_driver_register(&adsp_loader_driver);
|
|
}
|
|
module_init(adsp_loader_init);
|
|
|
|
static void __exit adsp_loader_exit(void)
|
|
{
|
|
platform_driver_unregister(&adsp_loader_driver);
|
|
}
|
|
module_exit(adsp_loader_exit);
|
|
|
|
MODULE_DESCRIPTION("ADSP Loader module");
|
|
MODULE_LICENSE("GPL v2");
|