audio-lnx: Propagate changes from kernel for wdsp-glink/avtimer (d1f3619b) · Commits · e / devices / android_kernel_fairphone_FP4

dsp/Makefile

+1 −1

Original line number	Diff line number	Diff line
		@@ -5,6 +5,6 @@ obj-$(CONFIG_MSM_ADSP_LOADER) += adsp-loader.o
		obj-$(CONFIG_MSM_QDSP6_SSR) += audio_ssr.o
		obj-$(CONFIG_MSM_QDSP6_PDR) += audio_pdr.o
		obj-$(CONFIG_MSM_QDSP6_NOTIFIER) += audio_notifier.o
		obj-$(CONFIG_MSM_CDSP_LOADER) += cdsp-loader.o
		obj-$(CONFIG_MSM_ULTRASOUND) += usf.o usfcdev.o q6usm.o
		obj-$(CONFIG_MSM_AVTIMER) += avtimer.o
		obj-$(CONFIG_MSM_QDSP6V2_CODECS) += codecs/

dsp/avtimer.c

0 → 100644

+548 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (c) 2012-2015, 2017 The Linux Foundation. All rights reserved.
		*
		* This program is free software; you can redistribute it and/or modify
		* it under the terms of the GNU General Public License version 2 and
		* only version 2 as published by the Free Software Foundation.
		*
		* This program is distributed in the hope that it will be useful,
		* but WITHOUT ANY WARRANTY; without even the implied warranty of
		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		* GNU General Public License for more details.
		*/

		#include <linux/kernel.h>
		#include <linux/module.h>
		#include <linux/init.h>
		#include <linux/fs.h>
		#include <linux/cdev.h>
		#include <linux/uaccess.h>
		#include <linux/device.h>
		#include <linux/io.h>
		#include <linux/platform_device.h>
		#include <linux/avtimer.h>
		#include <linux/slab.h>
		#include <linux/of.h>
		#include <linux/wait.h>
		#include <linux/sched.h>
		#include <ipc/apr.h>
		#include <dsp/q6core.h>

		#define DEVICE_NAME "avtimer"
		#define TIMEOUT_MS 1000
		#define CORE_CLIENT 1
		#define TEMP_PORT ((CORE_CLIENT << 8) \| 0x0001)
		#define SSR_WAKETIME 1000
		#define Q6_READY_RETRY 250
		#define Q6_READY_MAX_RETRIES 40

		#define AVCS_CMD_REMOTE_AVTIMER_VOTE_REQUEST 0x00012914
		#define AVCS_CMD_RSP_REMOTE_AVTIMER_VOTE_REQUEST 0x00012915
		#define AVCS_CMD_REMOTE_AVTIMER_RELEASE_REQUEST 0x00012916
		#define AVTIMER_REG_CNT 2

		struct adsp_avt_timer {
		struct apr_hdr hdr;
		union {
		char client_name[8];
		u32 avtimer_handle;
		};
		} __packed;

		static int major;

		struct avtimer_t {
		struct apr_svc *core_handle_q;
		struct cdev myc;
		struct class *avtimer_class;
		struct mutex avtimer_lock;
		int avtimer_open_cnt;
		struct delayed_work ssr_dwork;
		wait_queue_head_t adsp_resp_wait;
		int enable_timer_resp_received;
		int timer_handle;
		void __iomem *p_avtimer_msw;
		void __iomem *p_avtimer_lsw;
		uint32_t clk_div;
		uint32_t clk_mult;
		atomic_t adsp_ready;
		int num_retries;
		};

		static struct avtimer_t avtimer;

		static int32_t aprv2_core_fn_q(struct apr_client_data data, void priv)
		{
		uint32_t *payload1;

		if (!data) {
		pr_err("%s: Invalid params\n", __func__);
		return -EINVAL;
		}
		pr_debug("%s: core msg: payload len = %u, apr resp opcode = 0x%X\n",
		__func__, data->payload_size, data->opcode);

		switch (data->opcode) {

		case APR_BASIC_RSP_RESULT:{

		if (!data->payload_size) {
		pr_err("%s: APR_BASIC_RSP_RESULT No Payload ",
		__func__);
		return 0;
		}

		payload1 = data->payload;
		switch (payload1[0]) {
		case AVCS_CMD_REMOTE_AVTIMER_RELEASE_REQUEST:
		pr_debug("%s: Cmd = TIMER RELEASE status[0x%x]\n",
		__func__, payload1[1]);
		break;
		default:
		pr_err("Invalid cmd rsp[0x%x][0x%x]\n",
		payload1[0], payload1[1]);
		break;
		}
		break;
		}

		case RESET_EVENTS:{
		pr_debug("%s: Reset event received in AV timer\n", __func__);
		apr_reset(avtimer.core_handle_q);
		avtimer.core_handle_q = NULL;
		avtimer.avtimer_open_cnt = 0;
		atomic_set(&avtimer.adsp_ready, 0);
		schedule_delayed_work(&avtimer.ssr_dwork,
		msecs_to_jiffies(SSR_WAKETIME));
		break;
		}

		case AVCS_CMD_RSP_REMOTE_AVTIMER_VOTE_REQUEST:
		payload1 = data->payload;
		pr_debug("%s: RSP_REMOTE_AVTIMER_VOTE_REQUEST handle %x\n",
		__func__, payload1[0]);
		avtimer.timer_handle = payload1[0];
		avtimer.enable_timer_resp_received = 1;
		wake_up(&avtimer.adsp_resp_wait);
		break;
		default:
		pr_err("%s: Message adspcore svc: %d\n",
		__func__, data->opcode);
		break;
		}

		return 0;
		}

		int avcs_core_open(void)
		{
		if (!avtimer.core_handle_q)
		avtimer.core_handle_q = apr_register("ADSP", "CORE",
		aprv2_core_fn_q, TEMP_PORT, NULL);
		pr_debug("%s: Open_q %p\n", __func__, avtimer.core_handle_q);
		if (!avtimer.core_handle_q) {
		pr_err("%s: Unable to register CORE\n", __func__);
		return -EINVAL;
		}
		return 0;
		}
		EXPORT_SYMBOL(avcs_core_open);

		static int avcs_core_disable_avtimer(int timerhandle)
		{
		int rc = -EINVAL;
		struct adsp_avt_timer payload;

		if (!timerhandle) {
		pr_err("%s: Invalid timer handle\n", __func__);
		return -EINVAL;
		}
		memset(&payload, 0, sizeof(payload));
		rc = avcs_core_open();
		if (!rc && avtimer.core_handle_q) {
		payload.hdr.hdr_field = APR_HDR_FIELD(APR_MSG_TYPE_SEQ_CMD,
		APR_HDR_LEN(APR_HDR_SIZE), APR_PKT_VER);
		payload.hdr.pkt_size =
		sizeof(struct adsp_avt_timer);
		payload.hdr.src_svc = avtimer.core_handle_q->id;
		payload.hdr.src_domain = APR_DOMAIN_APPS;
		payload.hdr.dest_domain = APR_DOMAIN_ADSP;
		payload.hdr.dest_svc = APR_SVC_ADSP_CORE;
		payload.hdr.src_port = TEMP_PORT;
		payload.hdr.dest_port = TEMP_PORT;
		payload.hdr.token = CORE_CLIENT;
		payload.hdr.opcode = AVCS_CMD_REMOTE_AVTIMER_RELEASE_REQUEST;
		payload.avtimer_handle = timerhandle;
		pr_debug("%s: disable avtimer opcode %x handle %x\n",
		__func__, payload.hdr.opcode, payload.avtimer_handle);
		rc = apr_send_pkt(avtimer.core_handle_q,
		(uint32_t *)&payload);
		if (rc < 0)
		pr_err("%s: Enable AVtimer failed op[0x%x]rc[%d]\n",
		__func__, payload.hdr.opcode, rc);
		else
		rc = 0;
		}
		return rc;
		}

		static int avcs_core_enable_avtimer(char *client_name)
		{
		int rc = -EINVAL, ret = -EINVAL;
		struct adsp_avt_timer payload;

		if (!client_name) {
		pr_err("%s: Invalid params\n", __func__);
		return -EINVAL;
		}
		memset(&payload, 0, sizeof(payload));
		rc = avcs_core_open();
		if (!rc && avtimer.core_handle_q) {
		avtimer.enable_timer_resp_received = 0;
		payload.hdr.hdr_field = APR_HDR_FIELD(APR_MSG_TYPE_EVENT,
		APR_HDR_LEN(APR_HDR_SIZE), APR_PKT_VER);
		payload.hdr.pkt_size =
		sizeof(struct adsp_avt_timer);
		payload.hdr.src_svc = avtimer.core_handle_q->id;
		payload.hdr.src_domain = APR_DOMAIN_APPS;
		payload.hdr.dest_domain = APR_DOMAIN_ADSP;
		payload.hdr.dest_svc = APR_SVC_ADSP_CORE;
		payload.hdr.src_port = TEMP_PORT;
		payload.hdr.dest_port = TEMP_PORT;
		payload.hdr.token = CORE_CLIENT;
		payload.hdr.opcode = AVCS_CMD_REMOTE_AVTIMER_VOTE_REQUEST;
		strlcpy(payload.client_name, client_name,
		sizeof(payload.client_name));
		pr_debug("%s: enable avtimer opcode %x client name %s\n",
		__func__, payload.hdr.opcode, payload.client_name);
		rc = apr_send_pkt(avtimer.core_handle_q,
		(uint32_t *)&payload);
		if (rc < 0) {
		pr_err("%s: Enable AVtimer failed op[0x%x]rc[%d]\n",
		__func__, payload.hdr.opcode, rc);
		goto bail;
		} else
		rc = 0;
		ret = wait_event_timeout(avtimer.adsp_resp_wait,
		(avtimer.enable_timer_resp_received == 1),
		msecs_to_jiffies(TIMEOUT_MS));
		if (!ret) {
		pr_err("%s: wait_event timeout for Enable timer\n",
		__func__);
		rc = -ETIMEDOUT;
		}
		if (rc)
		avtimer.timer_handle = 0;
		}
		bail:
		return rc;
		}

		int avcs_core_disable_power_collapse(int enable)
		{
		int rc = 0;

		mutex_lock(&avtimer.avtimer_lock);
		if (enable) {
		if (avtimer.avtimer_open_cnt) {
		avtimer.avtimer_open_cnt++;
		pr_debug("%s: opened avtimer open count=%d\n",
		__func__, avtimer.avtimer_open_cnt);
		rc = 0;
		goto done;
		}
		rc = avcs_core_enable_avtimer("timer");
		if (!rc) {
		avtimer.avtimer_open_cnt++;
		atomic_set(&avtimer.adsp_ready, 1);
		}
		} else {
		if (avtimer.avtimer_open_cnt > 0) {
		avtimer.avtimer_open_cnt--;
		if (!avtimer.avtimer_open_cnt) {
		rc = avcs_core_disable_avtimer(
		avtimer.timer_handle);
		avtimer.timer_handle = 0;
		}
		}
		}
		done:
		mutex_unlock(&avtimer.avtimer_lock);
		return rc;
		}
		EXPORT_SYMBOL(avcs_core_disable_power_collapse);

		static void reset_work(struct work_struct *work)
		{
		if (q6core_is_adsp_ready()) {
		avcs_core_disable_power_collapse(1);
		avtimer.num_retries = Q6_READY_MAX_RETRIES;
		return;
		}
		pr_debug("%s:Q6 not ready-retry after sometime\n", __func__);
		if (--avtimer.num_retries > 0) {
		schedule_delayed_work(&avtimer.ssr_dwork,
		msecs_to_jiffies(Q6_READY_RETRY));
		} else {
		pr_err("%s: Q6 failed responding after multiple retries\n",
		__func__);
		avtimer.num_retries = Q6_READY_MAX_RETRIES;
		}
		}

		int avcs_core_query_timer(uint64_t *avtimer_tick)
		{
		uint32_t avtimer_msw = 0, avtimer_lsw = 0;
		uint64_t avtimer_tick_temp;

		if (!atomic_read(&avtimer.adsp_ready)) {
		pr_debug("%s:In SSR, return\n", __func__);
		return -ENETRESET;
		}
		avtimer_lsw = ioread32(avtimer.p_avtimer_lsw);
		avtimer_msw = ioread32(avtimer.p_avtimer_msw);

		avtimer_tick_temp = (uint64_t)((uint64_t)avtimer_msw << 32)
		\| avtimer_lsw;
		*avtimer_tick = mul_u64_u32_div(avtimer_tick_temp, avtimer.clk_mult,
		avtimer.clk_div);
		pr_debug_ratelimited("%s:Avtimer: msw: %u, lsw: %u, tick: %llu\n",
		__func__,
		avtimer_msw, avtimer_lsw, *avtimer_tick);
		return 0;
		}
		EXPORT_SYMBOL(avcs_core_query_timer);

		static int avtimer_open(struct inode inode, struct file file)
		{
		return avcs_core_disable_power_collapse(1);
		}

		static int avtimer_release(struct inode inode, struct file file)
		{
		return avcs_core_disable_power_collapse(0);
		}

		/*
		* ioctl call provides GET_AVTIMER
		*/
		static long avtimer_ioctl(struct file *file, unsigned int ioctl_num,
		unsigned long ioctl_param)
		{
		switch (ioctl_num) {
		case IOCTL_GET_AVTIMER_TICK:
		{
		uint64_t avtimer_tick = 0;
		int rc;

		rc = avcs_core_query_timer(&avtimer_tick);

		if (rc) {
		pr_err("%s: Error: Invalid AV Timer tick, rc = %d\n",
		__func__, rc);
		return rc;
		}

		pr_debug_ratelimited("%s: AV Timer tick: time %llx\n",
		__func__, avtimer_tick);
		if (copy_to_user((void *) ioctl_param, &avtimer_tick,
		sizeof(avtimer_tick))) {
		pr_err("%s: copy_to_user failed\n", __func__);
		return -EFAULT;
		}
		}
		break;

		default:
		pr_err("%s: invalid cmd\n", __func__);
		return -EINVAL;
		}
		return 0;
		}

		static const struct file_operations avtimer_fops = {
		.unlocked_ioctl = avtimer_ioctl,
		.compat_ioctl = avtimer_ioctl,
		.open = avtimer_open,
		.release = avtimer_release
		};

		static int dev_avtimer_probe(struct platform_device *pdev)
		{
		int result = 0;
		dev_t dev = MKDEV(major, 0);
		struct device *device_handle;
		struct resource reg_lsb = NULL, reg_msb = NULL;
		uint32_t clk_div_val;
		uint32_t clk_mult_val;

		if (!pdev) {
		pr_err("%s: Invalid params\n", __func__);
		return -EINVAL;
		}
		reg_lsb = platform_get_resource_byname(pdev,
		IORESOURCE_MEM, "avtimer_lsb_addr");
		if (!reg_lsb) {
		dev_err(&pdev->dev, "%s: Looking up %s property",
		"avtimer_lsb_addr", __func__);
		return -EINVAL;
		}
		reg_msb = platform_get_resource_byname(pdev,
		IORESOURCE_MEM, "avtimer_msb_addr");
		if (!reg_msb) {
		dev_err(&pdev->dev, "%s: Looking up %s property",
		"avtimer_msb_addr", __func__);
		return -EINVAL;
		}
		INIT_DELAYED_WORK(&avtimer.ssr_dwork, reset_work);

		avtimer.p_avtimer_lsw = devm_ioremap_nocache(&pdev->dev,
		reg_lsb->start, resource_size(reg_lsb));
		if (!avtimer.p_avtimer_lsw) {
		dev_err(&pdev->dev, "%s: ioremap failed for lsb avtimer register",
		__func__);
		return -ENOMEM;
		}

		avtimer.p_avtimer_msw = devm_ioremap_nocache(&pdev->dev,
		reg_msb->start, resource_size(reg_msb));
		if (!avtimer.p_avtimer_msw) {
		dev_err(&pdev->dev, "%s: ioremap failed for msb avtimer register",
		__func__);
		goto unmap;
		}
		avtimer.num_retries = Q6_READY_MAX_RETRIES;
		/* get the device number */
		if (major)
		result = register_chrdev_region(dev, 1, DEVICE_NAME);
		else {
		result = alloc_chrdev_region(&dev, 0, 1, DEVICE_NAME);
		major = MAJOR(dev);
		}

		if (result < 0) {
		dev_err(&pdev->dev, "%s: Registering avtimer device failed\n",
		__func__);
		goto unmap;
		}

		avtimer.avtimer_class = class_create(THIS_MODULE, "avtimer");
		if (IS_ERR(avtimer.avtimer_class)) {
		result = PTR_ERR(avtimer.avtimer_class);
		dev_err(&pdev->dev, "%s: Error creating avtimer class: %d\n",
		__func__, result);
		goto unregister_chrdev_region;
		}

		cdev_init(&avtimer.myc, &avtimer_fops);
		result = cdev_add(&avtimer.myc, dev, 1);

		if (result < 0) {
		dev_err(&pdev->dev, "%s: Registering file operations failed\n",
		__func__);
		goto class_destroy;
		}

		device_handle = device_create(avtimer.avtimer_class,
		NULL, avtimer.myc.dev, NULL, "avtimer");
		if (IS_ERR(device_handle)) {
		result = PTR_ERR(device_handle);
		pr_err("%s: device_create failed: %d\n", __func__, result);
		goto class_destroy;
		}
		init_waitqueue_head(&avtimer.adsp_resp_wait);
		mutex_init(&avtimer.avtimer_lock);
		avtimer.avtimer_open_cnt = 0;

		pr_debug("%s: Device create done for avtimer major=%d\n",
		__func__, major);

		if (of_property_read_u32(pdev->dev.of_node,
		"qcom,clk-div", &clk_div_val))
		avtimer.clk_div = 1;
		else
		avtimer.clk_div = clk_div_val;

		if (of_property_read_u32(pdev->dev.of_node,
		"qcom,clk-mult", &clk_mult_val))
		avtimer.clk_mult = 1;
		else
		avtimer.clk_mult = clk_mult_val;

		pr_debug("%s: avtimer.clk_div = %d, avtimer.clk_mult = %d\n",
		__func__, avtimer.clk_div, avtimer.clk_mult);
		return 0;

		class_destroy:
		class_destroy(avtimer.avtimer_class);
		unregister_chrdev_region:
		unregister_chrdev_region(MKDEV(major, 0), 1);
		unmap:
		if (avtimer.p_avtimer_lsw)
		devm_iounmap(&pdev->dev, avtimer.p_avtimer_lsw);
		if (avtimer.p_avtimer_msw)
		devm_iounmap(&pdev->dev, avtimer.p_avtimer_msw);
		avtimer.p_avtimer_lsw = NULL;
		avtimer.p_avtimer_msw = NULL;
		return result;

		}

		static int dev_avtimer_remove(struct platform_device *pdev)
		{
		pr_debug("%s: dev_avtimer_remove\n", __func__);

		if (avtimer.p_avtimer_lsw)
		devm_iounmap(&pdev->dev, avtimer.p_avtimer_lsw);
		if (avtimer.p_avtimer_msw)
		devm_iounmap(&pdev->dev, avtimer.p_avtimer_msw);
		device_destroy(avtimer.avtimer_class, avtimer.myc.dev);
		cdev_del(&avtimer.myc);
		class_destroy(avtimer.avtimer_class);
		unregister_chrdev_region(MKDEV(major, 0), 1);

		return 0;
		}

		static const struct of_device_id avtimer_machine_of_match[] = {
		{ .compatible = "qcom,avtimer", },
		{},
		};
		static struct platform_driver dev_avtimer_driver = {
		.probe = dev_avtimer_probe,
		.remove = dev_avtimer_remove,
		.driver = {
		.name = "dev_avtimer",
		.of_match_table = avtimer_machine_of_match,
		},
		};

		static int __init avtimer_init(void)
		{
		s32 rc;

		rc = platform_driver_register(&dev_avtimer_driver);
		if (rc < 0) {
		pr_err("%s: platform_driver_register failed\n", __func__);
		goto error_platform_driver;
		}
		pr_debug("%s: dev_avtimer_init : done\n", __func__);

		return 0;
		error_platform_driver:

		pr_err("%s: encounterd error\n", __func__);
		return rc;
		}

		static void __exit avtimer_exit(void)
		{
		pr_debug("%s: avtimer_exit\n", __func__);
		platform_driver_unregister(&dev_avtimer_driver);
		}

		module_init(avtimer_init);
		module_exit(avtimer_exit);

		MODULE_DESCRIPTION("avtimer driver");
		MODULE_LICENSE("GPL v2");

dsp/cdsp-loader.c

deleted100644 → 0

+0 −280

Original line number	Diff line number	Diff line
		/*
		* Copyright (c) 2012-2014, 2017, The Linux Foundation. All rights reserved.
		*
		* This program is free software; you can redistribute it and/or modify
		* it under the terms of the GNU General Public License version 2 and
		* only version 2 as published by the Free Software Foundation.
		*
		* This program is distributed in the hope that it will be useful,
		* but WITHOUT ANY WARRANTY; without even the implied warranty of
		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		* GNU General Public License for more details.
		*/

		#include <linux/init.h>
		#include <linux/kernel.h>
		#include <linux/module.h>
		#include <linux/err.h>
		#include <linux/delay.h>
		#include <linux/platform_device.h>
		#include <linux/of_device.h>
		#include <linux/sysfs.h>
		#include <linux/workqueue.h>

		#include <soc/qcom/subsystem_restart.h>

		#define BOOT_CMD 1
		#define IMAGE_UNLOAD_CMD 0

		#define CDSP_SUBSYS_DOWN 0
		#define CDSP_SUBSYS_LOADED 1

		static ssize_t cdsp_boot_store(struct kobject *kobj,
		struct kobj_attribute *attr,
		const char *buf, size_t count);

		struct cdsp_loader_private {
		void *pil_h;
		struct kobject *boot_cdsp_obj;
		struct attribute_group *attr_group;
		};

		static struct kobj_attribute cdsp_boot_attribute =
		__ATTR(boot, 0220, NULL, cdsp_boot_store);

		static struct attribute *attrs[] = {
		&cdsp_boot_attribute.attr,
		NULL,
		};

		static u32 cdsp_state = CDSP_SUBSYS_DOWN;
		static struct platform_device *cdsp_private;
		static struct work_struct cdsp_ldr_work;
		static void cdsp_loader_unload(struct platform_device *pdev);

		static void cdsp_load_fw(struct work_struct *cdsp_ldr_work)
		{
		struct platform_device *pdev = cdsp_private;
		struct cdsp_loader_private *priv = NULL;

		int rc = 0;
		const char *img_name;

		if (!pdev) {
		dev_err(&pdev->dev, "%s: Platform device null\n", __func__);
		goto fail;
		}

		if (!pdev->dev.of_node) {
		dev_err(&pdev->dev,
		"%s: Device tree information missing\n", __func__);

		goto fail;
		}

		rc = of_property_read_string(pdev->dev.of_node,
		"qcom,proc-img-to-load",
		&img_name);
		if (rc)
		goto fail;

		if (!strcmp(img_name, "cdsp")) {
		/* cdsp_state always returns "0".*/
		if (cdsp_state == CDSP_SUBSYS_DOWN) {
		priv = platform_get_drvdata(pdev);
		if (!priv) {
		dev_err(&pdev->dev,
		" %s: Private data get failed\n", __func__);
		goto fail;
		}

		priv->pil_h = subsystem_get("cdsp");
		if (IS_ERR(priv->pil_h)) {
		dev_err(&pdev->dev, "%s: pil get failed,\n",
		__func__);
		goto fail;
		}

		/* Set the state of the CDSP.*/
		cdsp_state = CDSP_SUBSYS_LOADED;
		} else if (cdsp_state == CDSP_SUBSYS_LOADED) {
		dev_dbg(&pdev->dev,
		"%s: CDSP state = %x\n", __func__, cdsp_state);
		}

		dev_dbg(&pdev->dev, "%s: CDSP image is loaded\n", __func__);
		return;
		}

		fail:
		dev_err(&pdev->dev, "%s: CDSP image loading failed\n", __func__);
		}

		static void cdsp_loader_do(struct platform_device *pdev)
		{
		schedule_work(&cdsp_ldr_work);
		}

		static ssize_t cdsp_boot_store(struct kobject *kobj,
		struct kobj_attribute *attr,
		const char *buf,
		size_t count)
		{
		int boot = 0, ret = 0;

		ret = sscanf(buf, "%du", &boot);

		if (ret != 1)
		pr_debug("%s: invalid arguments for cdsp_loader.\n", __func__);

		if (boot == BOOT_CMD) {
		pr_debug("%s: going to call cdsp_loader_do\n", __func__);
		cdsp_loader_do(cdsp_private);
		} else if (boot == IMAGE_UNLOAD_CMD) {
		pr_debug("%s: going to call cdsp_unloader\n", __func__);
		cdsp_loader_unload(cdsp_private);
		}
		return count;
		}

		static void cdsp_loader_unload(struct platform_device *pdev)
		{
		struct cdsp_loader_private *priv = NULL;

		priv = platform_get_drvdata(pdev);

		if (!priv)
		return;

		if (priv->pil_h) {
		dev_dbg(&pdev->dev, "%s: calling subsystem put\n", __func__);
		subsystem_put(priv->pil_h);
		priv->pil_h = NULL;
		}
		}

		static int cdsp_loader_init_sysfs(struct platform_device *pdev)
		{
		int ret = -EINVAL;
		struct cdsp_loader_private *priv = NULL;

		cdsp_private = NULL;

		priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
		if (!priv) {
		ret = -ENOMEM;
		return ret;
		}

		platform_set_drvdata(pdev, priv);

		priv->pil_h = NULL;
		priv->boot_cdsp_obj = NULL;
		priv->attr_group = devm_kzalloc(&pdev->dev,
		sizeof(*(priv->attr_group)),
		GFP_KERNEL);
		if (!priv->attr_group) {
		dev_err(&pdev->dev, "%s: malloc attr_group failed\n",
		__func__);
		ret = -ENOMEM;
		goto error_return;
		}

		priv->attr_group->attrs = attrs;

		priv->boot_cdsp_obj = kobject_create_and_add("boot_cdsp", kernel_kobj);
		if (!priv->boot_cdsp_obj) {
		dev_err(&pdev->dev, "%s: sysfs create and add failed\n",
		__func__);
		ret = -ENOMEM;
		goto error_return;
		}

		ret = sysfs_create_group(priv->boot_cdsp_obj, priv->attr_group);
		if (ret) {
		dev_err(&pdev->dev, "%s: sysfs create group failed %d\n",
		__func__, ret);
		goto error_return;
		}

		cdsp_private = pdev;

		return 0;

		error_return:

		if (priv->boot_cdsp_obj) {
		kobject_del(priv->boot_cdsp_obj);
		priv->boot_cdsp_obj = NULL;
		}

		return ret;
		}

		static int cdsp_loader_remove(struct platform_device *pdev)
		{
		struct cdsp_loader_private *priv = NULL;

		priv = platform_get_drvdata(pdev);

		if (!priv)
		return 0;

		if (priv->pil_h) {
		subsystem_put(priv->pil_h);
		priv->pil_h = NULL;
		}

		if (priv->boot_cdsp_obj) {
		sysfs_remove_group(priv->boot_cdsp_obj, priv->attr_group);
		kobject_del(priv->boot_cdsp_obj);
		priv->boot_cdsp_obj = NULL;
		}

		return 0;
		}

		static int cdsp_loader_probe(struct platform_device *pdev)
		{
		int ret = cdsp_loader_init_sysfs(pdev);

		if (ret != 0) {
		dev_err(&pdev->dev, "%s: Error in initing sysfs\n", __func__);
		return ret;
		}

		INIT_WORK(&cdsp_ldr_work, cdsp_load_fw);

		return 0;
		}

		static const struct of_device_id cdsp_loader_dt_match[] = {
		{ .compatible = "qcom,cdsp-loader" },
		{ }
		};
		MODULE_DEVICE_TABLE(of, cdsp_loader_dt_match);

		static struct platform_driver cdsp_loader_driver = {
		.driver = {
		.name = "cdsp-loader",
		.owner = THIS_MODULE,
		.of_match_table = cdsp_loader_dt_match,
		},
		.probe = cdsp_loader_probe,
		.remove = cdsp_loader_remove,
		};

		static int __init cdsp_loader_init(void)
		{
		return platform_driver_register(&cdsp_loader_driver);
		}
		module_init(cdsp_loader_init);

		static void __exit cdsp_loader_exit(void)
		{
		platform_driver_unregister(&cdsp_loader_driver);
		}
		module_exit(cdsp_loader_exit);

		MODULE_DESCRIPTION("CDSP Loader module");
		MODULE_LICENSE("GPL v2");

ipc/Makefile

+1 −0

Original line number	Diff line number	Diff line
		obj-$(CONFIG_MSM_QDSP6_APRV2_GLINK) += apr.o apr_v2.o apr_tal_glink.o
		obj-$(CONFIG_MSM_QDSP6_APRV3_GLINK) += apr.o apr_v3.o apr_tal_glink.o
		obj-$(CONFIG_WCD_DSP_GLINK) += wcd-dsp-glink.o

ipc/wcd-dsp-glink.c

0 → 100644

+1201 −0

File added.

Preview size limit exceeded, changes collapsed.