Merge "qseecom: Add support for scaling bus" (7589a03c) · Commits · e / devices / android_kernel_sony_msm8994

drivers/misc/qseecom.c

+310 −67

Original line number	Diff line number	Diff line
		@@ -71,6 +71,9 @@

		#define RPMB_SERVICE 0x2000

		#define QSEECOM_SEND_CMD_CRYPTO_TIMEOUT 2000
		#define QSEECOM_LOAD_APP_CRYPTO_TIMEOUT 2000

		enum qseecom_clk_definitions {
		CLK_DFAB = 0,
		CLK_SFPB,
		@@ -162,6 +165,12 @@ struct qseecom_control {
		uint32_t qsee_perf_client;
		struct qseecom_clk qsee;
		struct qseecom_clk ce_drv;

		bool support_bus_scaling;
		uint32_t cumulative_mode;
		enum qseecom_bandwidth_request_mode current_mode;
		struct timer_list bw_scale_down_timer;
		struct work_struct bw_inactive_req_ws;
		};

		struct qseecom_client_handle {
		@@ -191,6 +200,7 @@ struct qseecom_dev_handle {
		atomic_t ioctl_count;
		bool perf_enabled;
		bool fast_load_enabled;
		enum qseecom_bandwidth_request_mode mode;
		};

		enum qseecom_set_clear_key_flag {
		@@ -314,6 +324,7 @@ static int qseecom_register_listener(struct qseecom_dev_handle *data,
		return ret;
		}
		data->listener.id = 0;
		data->type = QSEECOM_LISTENER_SERVICE;
		if (!__qseecom_is_svc_unique(data, &rcvd_lstnr)) {
		pr_err("Service is not unique and is already registered\n");
		data->released = true;
		@@ -422,6 +433,153 @@ static int qseecom_unregister_listener(struct qseecom_dev_handle *data)
		return ret;
		}

		static int __qseecom_set_msm_bus_request(uint32_t mode)
		{
		int ret = 0;
		struct qseecom_clk *qclk;

		qclk = &qseecom.qsee;
		if (qclk->ce_core_src_clk != NULL) {
		if (mode == INACTIVE) {
		__qseecom_disable_clk(CLK_QSEE);
		} else {
		ret = __qseecom_enable_clk(CLK_QSEE);
		if (ret)
		pr_err("CLK enabling failed (%d) MODE (%d)\n",
		ret, mode);
		}
		}

		if ((!ret) && (qseecom.current_mode != mode)) {
		ret = msm_bus_scale_client_update_request(
		qseecom.qsee_perf_client, mode);
		if (ret) {
		pr_err("Bandwidth req failed(%d) MODE (%d)\n",
		ret, mode);
		if (qclk->ce_core_src_clk != NULL) {
		if (mode == INACTIVE)
		__qseecom_enable_clk(CLK_QSEE);
		else
		__qseecom_disable_clk(CLK_QSEE);
		}
		}
		qseecom.current_mode = mode;
		}
		return ret;
		}

		static void qseecom_bw_inactive_req_work(struct work_struct *work)
		{
		mutex_lock(&app_access_lock);
		mutex_lock(&qsee_bw_mutex);
		__qseecom_set_msm_bus_request(INACTIVE);
		pr_debug("current_mode = %d, cumulative_mode = %d\n",
		qseecom.current_mode, qseecom.cumulative_mode);
		mutex_unlock(&qsee_bw_mutex);
		mutex_unlock(&app_access_lock);
		return;
		}

		static void qseecom_scale_bus_bandwidth_timer_callback(unsigned long data)
		{
		schedule_work(&qseecom.bw_inactive_req_ws);
		return;
		}

		static int qseecom_scale_bus_bandwidth_timer(uint32_t mode, uint32_t duration)
		{
		int32_t ret = 0;
		int32_t request_mode = INACTIVE;

		mutex_lock(&qsee_bw_mutex);
		if (mode == 0) {
		if (qseecom.cumulative_mode > MEDIUM)
		request_mode = HIGH;
		else
		request_mode = qseecom.cumulative_mode;
		} else {
		request_mode = mode;
		}
		__qseecom_set_msm_bus_request(request_mode);

		del_timer_sync(&(qseecom.bw_scale_down_timer));
		qseecom.bw_scale_down_timer.expires = jiffies +
		msecs_to_jiffies(duration);
		add_timer(&(qseecom.bw_scale_down_timer));

		mutex_unlock(&qsee_bw_mutex);
		return ret;
		}


		static int qseecom_unregister_bus_bandwidth_needs(
		struct qseecom_dev_handle *data)
		{
		int32_t ret = 0;

		qseecom.cumulative_mode -= data->mode;
		data->mode = INACTIVE;

		return ret;
		}

		static int __qseecom_register_bus_bandwidth_needs(
		struct qseecom_dev_handle *data, uint32_t request_mode)
		{
		int32_t ret = 0;

		if (data->mode == INACTIVE) {
		qseecom.cumulative_mode += request_mode;
		data->mode = request_mode;
		} else {
		if (data->mode != request_mode) {
		qseecom.cumulative_mode -= data->mode;
		qseecom.cumulative_mode += request_mode;
		data->mode = request_mode;
		}
		}
		return ret;
		}

		static int qseecom_scale_bus_bandwidth(struct qseecom_dev_handle *data,
		void __user *argp)
		{
		int32_t ret = 0;
		int32_t req_mode;

		ret = copy_from_user(&req_mode, argp, sizeof(req_mode));
		if (ret) {
		pr_err("copy_from_user failed\n");
		return ret;
		}
		mutex_lock(&qsee_bw_mutex);
		ret = __qseecom_register_bus_bandwidth_needs(data, req_mode);
		mutex_unlock(&qsee_bw_mutex);

		return ret;
		}

		static void __qseecom_disable_clk_scale_down(struct qseecom_dev_handle *data)
		{
		if (!qseecom.support_bus_scaling)
		qsee_disable_clock_vote(data, CLK_SFPB);
		return;
		}

		static int __qseecom_enable_clk_scale_up(struct qseecom_dev_handle *data)
		{
		int ret = 0;
		if (qseecom.support_bus_scaling) {
		qseecom_scale_bus_bandwidth_timer(
		MEDIUM, QSEECOM_LOAD_APP_CRYPTO_TIMEOUT);
		} else {
		ret = qsee_vote_for_clock(data, CLK_SFPB);
		if (ret)
		pr_err("Fail vote for clk SFPB ret %d\n", ret);
		}
		return ret;
		}

		static int qseecom_set_client_mem_param(struct qseecom_dev_handle *data,
		void __user *argp)
		{
		@@ -596,7 +754,7 @@ static int qseecom_load_app(struct qseecom_dev_handle data, void __user argp)
		u32 app_id = 0;
		struct ion_handle ihandle; / Ion handle */
		struct qseecom_load_img_req load_img_req;
		int32_t ret;
		int32_t ret = 0;
		ion_phys_addr_t pa = 0;
		uint32_t len;
		struct qseecom_command_scm_resp resp;
		@@ -611,15 +769,15 @@ static int qseecom_load_app(struct qseecom_dev_handle data, void __user argp)
		return -EFAULT;
		}
		/* Vote for the SFPB clock */
		ret = qsee_vote_for_clock(data, CLK_SFPB);
		ret = __qseecom_enable_clk_scale_up(data);
		if (ret)
		pr_warning("Unable to vote for SFPB clock");
		return ret;
		req.qsee_cmd_id = QSEOS_APP_LOOKUP_COMMAND;
		memcpy(req.app_name, load_img_req.img_name, MAX_APP_NAME_SIZE);

		ret = __qseecom_check_app_exists(req);
		if (ret < 0) {
		qsee_disable_clock_vote(data, CLK_SFPB);
		__qseecom_disable_clk_scale_down(data);
		return ret;
		}

		@@ -645,7 +803,7 @@ static int qseecom_load_app(struct qseecom_dev_handle data, void __user argp)
		load_img_req.ifd_data_fd);
		if (IS_ERR_OR_NULL(ihandle)) {
		pr_err("Ion client could not retrieve the handle\n");
		qsee_disable_clock_vote(data, CLK_SFPB);
		__qseecom_disable_clk_scale_down(data);
		return -ENOMEM;
		}

		@@ -670,7 +828,7 @@ static int qseecom_load_app(struct qseecom_dev_handle data, void __user argp)
		pr_err("scm_call to load app failed\n");
		if (!IS_ERR_OR_NULL(ihandle))
		ion_free(qseecom.ion_clnt, ihandle);
		qsee_disable_clock_vote(data, CLK_SFPB);
		__qseecom_disable_clk_scale_down(data);
		return -EINVAL;
		}

		@@ -678,7 +836,7 @@ static int qseecom_load_app(struct qseecom_dev_handle data, void __user argp)
		pr_err("scm_call rsp.result is QSEOS_RESULT_FAILURE\n");
		if (!IS_ERR_OR_NULL(ihandle))
		ion_free(qseecom.ion_clnt, ihandle);
		qsee_disable_clock_vote(data, CLK_SFPB);
		__qseecom_disable_clk_scale_down(data);
		return -EFAULT;
		}

		@@ -689,7 +847,7 @@ static int qseecom_load_app(struct qseecom_dev_handle data, void __user argp)
		ret);
		if (!IS_ERR_OR_NULL(ihandle))
		ion_free(qseecom.ion_clnt, ihandle);
		qsee_disable_clock_vote(data, CLK_SFPB);
		__qseecom_disable_clk_scale_down(data);
		return ret;
		}
		}
		@@ -699,7 +857,7 @@ static int qseecom_load_app(struct qseecom_dev_handle data, void __user argp)
		resp.result);
		if (!IS_ERR_OR_NULL(ihandle))
		ion_free(qseecom.ion_clnt, ihandle);
		qsee_disable_clock_vote(data, CLK_SFPB);
		__qseecom_disable_clk_scale_down(data);
		return -EFAULT;
		}

		@@ -708,7 +866,7 @@ static int qseecom_load_app(struct qseecom_dev_handle data, void __user argp)
		entry = kmalloc(sizeof(*entry), GFP_KERNEL);
		if (!entry) {
		pr_err("kmalloc failed\n");
		qsee_disable_clock_vote(data, CLK_SFPB);
		__qseecom_disable_clk_scale_down(data);
		return -ENOMEM;
		}
		entry->app_id = app_id;
		@@ -731,10 +889,10 @@ static int qseecom_load_app(struct qseecom_dev_handle data, void __user argp)
		if (copy_to_user(argp, &load_img_req, sizeof(load_img_req))) {
		pr_err("copy_to_user failed\n");
		kzfree(entry);
		qsee_disable_clock_vote(data, CLK_SFPB);
		__qseecom_disable_clk_scale_down(data);
		return -EFAULT;
		}
		qsee_disable_clock_vote(data, CLK_SFPB);
		__qseecom_disable_clk_scale_down(data);
		return 0;
		}

		@@ -887,6 +1045,8 @@ static int qseecom_send_service_cmd(struct qseecom_dev_handle *data,
		return -EINVAL;
		}

		data->type = QSEECOM_SECURE_SERVICE;

		switch (req.cmd_id) {
		case QSEOS_RPMB_PROVISION_KEY_COMMAND:
		case QSEOS_RPMB_ERASE_COMMAND:
		@@ -899,6 +1059,14 @@ static int qseecom_send_service_cmd(struct qseecom_dev_handle *data,
		return -EINVAL;
		}

		if (qseecom.support_bus_scaling) {
		qseecom_scale_bus_bandwidth_timer(HIGH,
		QSEECOM_SEND_CMD_CRYPTO_TIMEOUT);
		if (ret) {
		pr_err("Fail to set bw HIGH%d\n", ret);
		return ret;
		}
		} else {
		ret = qsee_vote_for_clock(data, CLK_DFAB);
		if (ret) {
		pr_err("Failed to vote for DFAB clock%d\n", ret);
		@@ -906,8 +1074,10 @@ static int qseecom_send_service_cmd(struct qseecom_dev_handle *data,
		}
		ret = qsee_vote_for_clock(data, CLK_SFPB);
		if (ret) {
		qsee_disable_clock_vote(data, CLK_DFAB);
		pr_err("Failed to vote for SFPB clock%d\n", ret);
		goto exit_reset_dfab_freq;
		goto exit;
		}
		}

		msm_ion_do_cache_op(qseecom.ion_clnt, data->client.ihandle,
		@@ -921,7 +1091,11 @@ static int qseecom_send_service_cmd(struct qseecom_dev_handle *data,
		ION_IOC_INV_CACHES);
		if (ret) {
		pr_err("qseecom_scm_call failed with err: %d\n", ret);
		goto exit_reset_sdfab_freq;
		if (!qseecom.support_bus_scaling) {
		qsee_disable_clock_vote(data, CLK_DFAB);
		qsee_disable_clock_vote(data, CLK_SFPB);
		}
		goto exit;
		}

		switch (resp.result) {
		@@ -944,10 +1118,7 @@ static int qseecom_send_service_cmd(struct qseecom_dev_handle *data,
		ret = -EINVAL;
		break;
		}
		exit_reset_sdfab_freq:
		qsee_disable_clock_vote(data, CLK_SFPB);
		exit_reset_dfab_freq:
		qsee_disable_clock_vote(data, CLK_DFAB);
		exit:
		return ret;
		}

		@@ -1403,10 +1574,9 @@ static int __qseecom_load_fw(struct qseecom_dev_handle data, char appname)
		/* Populate the remaining parameters */
		load_req.qsee_cmd_id = QSEOS_APP_START_COMMAND;
		memcpy(load_req.app_name, appname, MAX_APP_NAME_SIZE);
		ret = qsee_vote_for_clock(data, CLK_SFPB);
		ret = __qseecom_enable_clk_scale_up(data);
		if (ret) {
		kzfree(img_data);
		pr_warning("Unable to vote for SFPB clock");
		return -EIO;
		}

		@@ -1418,7 +1588,7 @@ static int __qseecom_load_fw(struct qseecom_dev_handle data, char appname)
		kzfree(img_data);
		if (ret) {
		pr_err("scm_call to load failed : ret %d\n", ret);
		qsee_disable_clock_vote(data, CLK_SFPB);
		__qseecom_disable_clk_scale_down(data);
		return -EIO;
		}

		@@ -1441,7 +1611,7 @@ static int __qseecom_load_fw(struct qseecom_dev_handle data, char appname)
		ret = -EINVAL;
		break;
		}
		qsee_disable_clock_vote(data, CLK_SFPB);
		__qseecom_disable_clk_scale_down(data);

		return ret;
		}
		@@ -1470,9 +1640,8 @@ static int qseecom_load_commonlib_image(struct qseecom_dev_handle *data)
		/* Populate the remaining parameters */
		load_req.qsee_cmd_id = QSEOS_LOAD_SERV_IMAGE_COMMAND;
		/* Vote for the SFPB clock */
		ret = qsee_vote_for_clock(data, CLK_SFPB);
		ret = __qseecom_enable_clk_scale_up(data);
		if (ret) {
		pr_err("Unable to vote for SFPB clock: ret = %d", ret);
		kzfree(img_data);
		return -EIO;
		}
		@@ -1508,7 +1677,7 @@ static int qseecom_load_commonlib_image(struct qseecom_dev_handle *data)
		}
		}
		kzfree(img_data);
		qsee_disable_clock_vote(data, CLK_SFPB);
		__qseecom_disable_clk_scale_down(data);
		return ret;
		}

		@@ -1718,10 +1887,24 @@ int qseecom_shutdown_app(struct qseecom_handle **handle)
		pr_err("Unable to find the handle, exiting\n");
		else
		ret = qseecom_unload_app(data);

		if (qseecom.support_bus_scaling) {
		mutex_lock(&qsee_bw_mutex);
		if (data->mode != INACTIVE) {
		qseecom_unregister_bus_bandwidth_needs(data);
		if (qseecom.cumulative_mode == INACTIVE) {
		ret = __qseecom_set_msm_bus_request(INACTIVE);
		if (ret)
		pr_err("Fail to scale down bus\n");
		}
		}
		mutex_unlock(&qsee_bw_mutex);
		} else {
		if (data->fast_load_enabled == true)
		qsee_disable_clock_vote(data, CLK_SFPB);
		if (data->perf_enabled == true)
		qsee_disable_clock_vote(data, CLK_DFAB);
		}
		if (ret == 0) {
		kzfree(data);
		kzfree(*handle);
		@@ -1752,7 +1935,9 @@ int qseecom_send_command(struct qseecom_handle handle, void send_buf,

		mutex_lock(&app_access_lock);
		atomic_inc(&data->ioctl_count);

		if (qseecom.support_bus_scaling)
		qseecom_scale_bus_bandwidth_timer(INACTIVE,
		QSEECOM_SEND_CMD_CRYPTO_TIMEOUT);
		ret = __qseecom_send_cmd(data, &req);

		atomic_dec(&data->ioctl_count);
		@@ -1775,18 +1960,31 @@ int qseecom_set_bandwidth(struct qseecom_handle *handle, bool high)
		return -EINVAL;
		}
		if (high) {
		if (qseecom.support_bus_scaling) {
		mutex_lock(&qsee_bw_mutex);
		__qseecom_register_bus_bandwidth_needs(handle->dev,
		HIGH);
		mutex_unlock(&qsee_bw_mutex);
		if (ret)
		pr_err("Failed to scale bus (med) %d\n", ret);
		} else {
		ret = qsee_vote_for_clock(handle->dev, CLK_DFAB);
		if (ret)
		pr_err("Failed to vote for DFAB clock%d\n", ret);
		pr_err("Failed to vote for DFAB clock%d\n",
		ret);
		ret = qsee_vote_for_clock(handle->dev, CLK_SFPB);
		if (ret) {
		pr_err("Failed to vote for SFPB clock%d\n", ret);
		pr_err("Failed to vote for SFPB clock%d\n",
		ret);
		qsee_disable_clock_vote(handle->dev, CLK_DFAB);
		}
		}
		} else {
		if (!qseecom.support_bus_scaling) {
		qsee_disable_clock_vote(handle->dev, CLK_DFAB);
		qsee_disable_clock_vote(handle->dev, CLK_SFPB);
		}
		}
		return ret;
		}
		EXPORT_SYMBOL(qseecom_set_bandwidth);
		@@ -2121,9 +2319,8 @@ static int qseecom_load_external_elf(struct qseecom_dev_handle *data,
		}

		/* Vote for the SFPB clock */
		ret = qsee_vote_for_clock(data, CLK_SFPB);
		ret = __qseecom_enable_clk_scale_up(data);
		if (ret) {
		pr_err("Unable to vote for SFPB clock: ret = %d", ret);
		ret = -EIO;
		goto exit_cpu_restore;
		}
		@@ -2161,7 +2358,7 @@ static int qseecom_load_external_elf(struct qseecom_dev_handle *data,
		}

		exit_disable_clock:
		qsee_disable_clock_vote(data, CLK_SFPB);
		__qseecom_disable_clk_scale_down(data);
		exit_cpu_restore:
		/* Restore the CPU mask */
		mask = CPU_MASK_ALL;
		@@ -2700,6 +2897,9 @@ static long qseecom_ioctl(struct file *file, unsigned cmd,
		case QSEECOM_IOCTL_SEND_CMD_REQ: {
		/* Only one client allowed here at a time */
		mutex_lock(&app_access_lock);
		if (qseecom.support_bus_scaling)
		qseecom_scale_bus_bandwidth_timer(INACTIVE,
		QSEECOM_SEND_CMD_CRYPTO_TIMEOUT);
		atomic_inc(&data->ioctl_count);
		ret = qseecom_send_cmd(data, argp);
		atomic_dec(&data->ioctl_count);
		@@ -2712,6 +2912,9 @@ static long qseecom_ioctl(struct file *file, unsigned cmd,
		case QSEECOM_IOCTL_SEND_MODFD_CMD_REQ: {
		/* Only one client allowed here at a time */
		mutex_lock(&app_access_lock);
		if (qseecom.support_bus_scaling)
		qseecom_scale_bus_bandwidth_timer(INACTIVE,
		QSEECOM_SEND_CMD_CRYPTO_TIMEOUT);
		atomic_inc(&data->ioctl_count);
		ret = qseecom_send_modfd_cmd(data, argp);
		atomic_dec(&data->ioctl_count);
		@@ -2789,19 +2992,34 @@ static long qseecom_ioctl(struct file *file, unsigned cmd,
		}
		case QSEECOM_IOCTL_PERF_ENABLE_REQ:{
		atomic_inc(&data->ioctl_count);
		if (qseecom.support_bus_scaling) {
		mutex_lock(&qsee_bw_mutex);
		__qseecom_register_bus_bandwidth_needs(data, HIGH);
		mutex_unlock(&qsee_bw_mutex);
		} else {
		ret = qsee_vote_for_clock(data, CLK_DFAB);
		if (ret)
		pr_err("Failed to vote for DFAB clock%d\n", ret);
		pr_err("Fail to vote for DFAB clock%d\n", ret);
		ret = qsee_vote_for_clock(data, CLK_SFPB);
		if (ret)
		pr_err("Failed to vote for SFPB clock%d\n", ret);
		pr_err("Fail to vote for SFPB clock%d\n", ret);
		}
		atomic_dec(&data->ioctl_count);
		break;
		}
		case QSEECOM_IOCTL_PERF_DISABLE_REQ:{
		atomic_inc(&data->ioctl_count);
		if (!qseecom.support_bus_scaling) {
		qsee_disable_clock_vote(data, CLK_DFAB);
		qsee_disable_clock_vote(data, CLK_SFPB);
		}
		atomic_dec(&data->ioctl_count);
		break;
		}

		case QSEECOM_IOCTL_SET_BUS_SCALING_REQ: {
		atomic_inc(&data->ioctl_count);
		ret = qseecom_scale_bus_bandwidth(data, argp);
		atomic_dec(&data->ioctl_count);
		break;
		}
		@@ -2943,6 +3161,7 @@ static int qseecom_open(struct inode inode, struct file file)
		data->abort = 0;
		data->type = QSEECOM_GENERIC;
		data->released = false;
		data->mode = INACTIVE;
		init_waitqueue_head(&data->abort_wq);
		atomic_set(&data->ioctl_count, 0);

		@@ -2955,8 +3174,8 @@ static int qseecom_release(struct inode inode, struct file file)
		int ret = 0;

		if (data->released == false) {
		pr_warn("data: released = false, type = %d, data = 0x%x\n",
		data->type, (u32)data);
		pr_warn("data: released=false, type=%d, mode=%d, data=0x%x\n",
		data->type, data->mode, (u32)data);
		switch (data->type) {
		case QSEECOM_LISTENER_SERVICE:
		ret = qseecom_unregister_listener(data);
		@@ -2979,11 +3198,23 @@ static int qseecom_release(struct inode inode, struct file file)
		}
		}

		if (qseecom.support_bus_scaling) {
		mutex_lock(&qsee_bw_mutex);
		if (data->mode != INACTIVE) {
		qseecom_unregister_bus_bandwidth_needs(data);
		if (qseecom.cumulative_mode == INACTIVE) {
		ret = __qseecom_set_msm_bus_request(INACTIVE);
		if (ret)
		pr_err("Fail to scale down bus\n");
		}
		}
		mutex_unlock(&qsee_bw_mutex);
		} else {
		if (data->fast_load_enabled == true)
		qsee_disable_clock_vote(data, CLK_SFPB);
		if (data->perf_enabled == true)
		qsee_disable_clock_vote(data, CLK_DFAB);

		}
		kfree(data);

		return ret;
		@@ -3126,6 +3357,10 @@ static int qseecom_probe(struct platform_device *pdev)
		qseecom.qsee.ce_core_src_clk = NULL;
		qseecom.qsee.ce_bus_clk = NULL;

		qseecom.cumulative_mode = 0;
		qseecom.current_mode = INACTIVE;
		qseecom.support_bus_scaling = false;

		qseecom.ce_drv.ce_core_clk = NULL;
		qseecom.ce_drv.ce_clk = NULL;
		qseecom.ce_drv.ce_core_src_clk = NULL;
		@@ -3205,7 +3440,9 @@ static int qseecom_probe(struct platform_device *pdev)

		/* register client for bus scaling */
		if (pdev->dev.of_node) {

		qseecom.support_bus_scaling =
		of_property_read_bool((&pdev->dev)->of_node,
		"qcom,support-bus-scaling");
		if (of_property_read_u32((&pdev->dev)->of_node,
		"qcom,disk-encrypt-pipe-pair",
		&qseecom.ce_info.disk_encrypt_pipe)) {
		@@ -3298,7 +3535,13 @@ static int qseecom_probe(struct platform_device *pdev)
		qseecom_platform_support = (struct msm_bus_scale_pdata *)
		pdev->dev.platform_data;
		}

		if (qseecom.support_bus_scaling) {
		init_timer(&(qseecom.bw_scale_down_timer));
		INIT_WORK(&qseecom.bw_inactive_req_ws,
		qseecom_bw_inactive_req_work);
		qseecom.bw_scale_down_timer.function =
		qseecom_scale_bus_bandwidth_timer_callback;
		}
		qseecom.qsee_perf_client = msm_bus_scale_register_client(
		qseecom_platform_support);

include/uapi/linux/qseecom.h

+11 −0

Original line number	Diff line number	Diff line
		@@ -163,6 +163,13 @@ enum qseecom_buffer_protection {
		QSEOS_UNPROTECT_PROTECTED_BUFFER,
		};

		enum qseecom_bandwidth_request_mode {
		INACTIVE = 0,
		LOW,
		MEDIUM,
		HIGH,
		};

		/*
		* struct qseecom_send_modfd_resp - for send command ioctl request
		* @req_len - command buffer length
		@@ -247,4 +254,8 @@ struct qseecom_send_modfd_listener_resp {
		#define QSEECOM_IOCTL_UNPROTECT_BUF \
		_IOWR(QSEECOM_IOC_MAGIC, 22, int)


		#define QSEECOM_IOCTL_SET_BUS_SCALING_REQ \
		_IOWR(QSEECOM_IOC_MAGIC, 23, int)

		#endif /* _UAPI_QSEECOM_H_ */