1 files changed, 629 insertions, 0 deletions

diff --git a/sound/soc/intel/skylake/bxt-sst.c b/sound/soc/intel/skylake/bxt-sst.c
new file mode 100644
index 000000000..fd4fdcb95
--- /dev/null
+++ b/sound/soc/intel/skylake/bxt-sst.c
@@ -0,0 +1,629 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ *  bxt-sst.c - DSP library functions for BXT platform
+ *
+ *  Copyright (C) 2015-16 Intel Corp
+ *  Author:Rafal Redzimski <rafal.f.redzimski@intel.com>
+ *	   Jeeja KP <jeeja.kp@intel.com>
+ */
+
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/firmware.h>
+#include <linux/device.h>
+
+#include "../common/sst-dsp.h"
+#include "../common/sst-dsp-priv.h"
+#include "skl.h"
+
+#define BXT_BASEFW_TIMEOUT	3000
+#define BXT_ROM_INIT_TIMEOUT	70
+#define BXT_IPC_PURGE_FW	0x01004000
+
+#define BXT_ROM_INIT		0x5
+#define BXT_ADSP_SRAM0_BASE	0x80000
+
+/* Firmware status window */
+#define BXT_ADSP_FW_STATUS	BXT_ADSP_SRAM0_BASE
+#define BXT_ADSP_ERROR_CODE     (BXT_ADSP_FW_STATUS + 0x4)
+
+#define BXT_ADSP_SRAM1_BASE	0xA0000
+
+#define BXT_INSTANCE_ID 0
+#define BXT_BASE_FW_MODULE_ID 0
+
+#define BXT_ADSP_FW_BIN_HDR_OFFSET 0x2000
+
+/* Delay before scheduling D0i3 entry */
+#define BXT_D0I3_DELAY 5000
+
+static unsigned int bxt_get_errorcode(struct sst_dsp *ctx)
+{
+	 return sst_dsp_shim_read(ctx, BXT_ADSP_ERROR_CODE);
+}
+
+static int
+bxt_load_library(struct sst_dsp *ctx, struct skl_lib_info *linfo, int lib_count)
+{
+	struct snd_dma_buffer dmab;
+	struct skl_dev *skl = ctx->thread_context;
+	struct firmware stripped_fw;
+	int ret = 0, i, dma_id, stream_tag;
+
+	/* library indices start from 1 to N. 0 represents base FW */
+	for (i = 1; i < lib_count; i++) {
+		ret = skl_prepare_lib_load(skl, &skl->lib_info[i], &stripped_fw,
+					BXT_ADSP_FW_BIN_HDR_OFFSET, i);
+		if (ret < 0)
+			goto load_library_failed;
+
+		stream_tag = ctx->dsp_ops.prepare(ctx->dev, 0x40,
+					stripped_fw.size, &dmab);
+		if (stream_tag <= 0) {
+			dev_err(ctx->dev, "Lib prepare DMA err: %x\n",
+					stream_tag);
+			ret = stream_tag;
+			goto load_library_failed;
+		}
+
+		dma_id = stream_tag - 1;
+		memcpy(dmab.area, stripped_fw.data, stripped_fw.size);
+
+		ctx->dsp_ops.trigger(ctx->dev, true, stream_tag);
+		ret = skl_sst_ipc_load_library(&skl->ipc, dma_id, i, true);
+		if (ret < 0)
+			dev_err(ctx->dev, "IPC Load Lib for %s fail: %d\n",
+					linfo[i].name, ret);
+
+		ctx->dsp_ops.trigger(ctx->dev, false, stream_tag);
+		ctx->dsp_ops.cleanup(ctx->dev, &dmab, stream_tag);
+	}
+
+	return ret;
+
+load_library_failed:
+	skl_release_library(linfo, lib_count);
+	return ret;
+}
+
+/*
+ * First boot sequence has some extra steps. Core 0 waits for power
+ * status on core 1, so power up core 1 also momentarily, keep it in
+ * reset/stall and then turn it off
+ */
+static int sst_bxt_prepare_fw(struct sst_dsp *ctx,
+			const void *fwdata, u32 fwsize)
+{
+	int stream_tag, ret;
+
+	stream_tag = ctx->dsp_ops.prepare(ctx->dev, 0x40, fwsize, &ctx->dmab);
+	if (stream_tag <= 0) {
+		dev_err(ctx->dev, "Failed to prepare DMA FW loading err: %x\n",
+				stream_tag);
+		return stream_tag;
+	}
+
+	ctx->dsp_ops.stream_tag = stream_tag;
+	memcpy(ctx->dmab.area, fwdata, fwsize);
+
+	/* Step 1: Power up core 0 and core1 */
+	ret = skl_dsp_core_power_up(ctx, SKL_DSP_CORE0_MASK |
+				SKL_DSP_CORE_MASK(1));
+	if (ret < 0) {
+		dev_err(ctx->dev, "dsp core0/1 power up failed\n");
+		goto base_fw_load_failed;
+	}
+
+	/* Step 2: Purge FW request */
+	sst_dsp_shim_write(ctx, SKL_ADSP_REG_HIPCI, SKL_ADSP_REG_HIPCI_BUSY |
+				(BXT_IPC_PURGE_FW | ((stream_tag - 1) << 9)));
+
+	/* Step 3: Unset core0 reset state & unstall/run core0 */
+	ret = skl_dsp_start_core(ctx, SKL_DSP_CORE0_MASK);
+	if (ret < 0) {
+		dev_err(ctx->dev, "Start dsp core failed ret: %d\n", ret);
+		ret = -EIO;
+		goto base_fw_load_failed;
+	}
+
+	/* Step 4: Wait for DONE Bit */
+	ret = sst_dsp_register_poll(ctx, SKL_ADSP_REG_HIPCIE,
+					SKL_ADSP_REG_HIPCIE_DONE,
+					SKL_ADSP_REG_HIPCIE_DONE,
+					BXT_INIT_TIMEOUT, "HIPCIE Done");
+	if (ret < 0) {
+		dev_err(ctx->dev, "Timeout for Purge Request%d\n", ret);
+		goto base_fw_load_failed;
+	}
+
+	/* Step 5: power down core1 */
+	ret = skl_dsp_core_power_down(ctx, SKL_DSP_CORE_MASK(1));
+	if (ret < 0) {
+		dev_err(ctx->dev, "dsp core1 power down failed\n");
+		goto base_fw_load_failed;
+	}
+
+	/* Step 6: Enable Interrupt */
+	skl_ipc_int_enable(ctx);
+	skl_ipc_op_int_enable(ctx);
+
+	/* Step 7: Wait for ROM init */
+	ret = sst_dsp_register_poll(ctx, BXT_ADSP_FW_STATUS, SKL_FW_STS_MASK,
+			SKL_FW_INIT, BXT_ROM_INIT_TIMEOUT, "ROM Load");
+	if (ret < 0) {
+		dev_err(ctx->dev, "Timeout for ROM init, ret:%d\n", ret);
+		goto base_fw_load_failed;
+	}
+
+	return ret;
+
+base_fw_load_failed:
+	ctx->dsp_ops.cleanup(ctx->dev, &ctx->dmab, stream_tag);
+	skl_dsp_core_power_down(ctx, SKL_DSP_CORE_MASK(1));
+	skl_dsp_disable_core(ctx, SKL_DSP_CORE0_MASK);
+	return ret;
+}
+
+static int sst_transfer_fw_host_dma(struct sst_dsp *ctx)
+{
+	int ret;
+
+	ctx->dsp_ops.trigger(ctx->dev, true, ctx->dsp_ops.stream_tag);
+	ret = sst_dsp_register_poll(ctx, BXT_ADSP_FW_STATUS, SKL_FW_STS_MASK,
+			BXT_ROM_INIT, BXT_BASEFW_TIMEOUT, "Firmware boot");
+
+	ctx->dsp_ops.trigger(ctx->dev, false, ctx->dsp_ops.stream_tag);
+	ctx->dsp_ops.cleanup(ctx->dev, &ctx->dmab, ctx->dsp_ops.stream_tag);
+
+	return ret;
+}
+
+static int bxt_load_base_firmware(struct sst_dsp *ctx)
+{
+	struct firmware stripped_fw;
+	struct skl_dev *skl = ctx->thread_context;
+	int ret, i;
+
+	if (ctx->fw == NULL) {
+		ret = request_firmware(&ctx->fw, ctx->fw_name, ctx->dev);
+		if (ret < 0) {
+			dev_err(ctx->dev, "Request firmware failed %d\n", ret);
+			return ret;
+		}
+	}
+
+	/* prase uuids on first boot */
+	if (skl->is_first_boot) {
+		ret = snd_skl_parse_uuids(ctx, ctx->fw, BXT_ADSP_FW_BIN_HDR_OFFSET, 0);
+		if (ret < 0)
+			goto sst_load_base_firmware_failed;
+	}
+
+	stripped_fw.data = ctx->fw->data;
+	stripped_fw.size = ctx->fw->size;
+	skl_dsp_strip_extended_manifest(&stripped_fw);
+
+
+	for (i = 0; i < BXT_FW_ROM_INIT_RETRY; i++) {
+		ret = sst_bxt_prepare_fw(ctx, stripped_fw.data, stripped_fw.size);
+		if (ret == 0)
+			break;
+	}
+
+	if (ret < 0) {
+		dev_err(ctx->dev, "Error code=0x%x: FW status=0x%x\n",
+			sst_dsp_shim_read(ctx, BXT_ADSP_ERROR_CODE),
+			sst_dsp_shim_read(ctx, BXT_ADSP_FW_STATUS));
+
+		dev_err(ctx->dev, "Core En/ROM load fail:%d\n", ret);
+		goto sst_load_base_firmware_failed;
+	}
+
+	ret = sst_transfer_fw_host_dma(ctx);
+	if (ret < 0) {
+		dev_err(ctx->dev, "Transfer firmware failed %d\n", ret);
+		dev_info(ctx->dev, "Error code=0x%x: FW status=0x%x\n",
+			sst_dsp_shim_read(ctx, BXT_ADSP_ERROR_CODE),
+			sst_dsp_shim_read(ctx, BXT_ADSP_FW_STATUS));
+
+		skl_dsp_disable_core(ctx, SKL_DSP_CORE0_MASK);
+	} else {
+		dev_dbg(ctx->dev, "Firmware download successful\n");
+		ret = wait_event_timeout(skl->boot_wait, skl->boot_complete,
+					msecs_to_jiffies(SKL_IPC_BOOT_MSECS));
+		if (ret == 0) {
+			dev_err(ctx->dev, "DSP boot fail, FW Ready timeout\n");
+			skl_dsp_disable_core(ctx, SKL_DSP_CORE0_MASK);
+			ret = -EIO;
+		} else {
+			ret = 0;
+			skl->fw_loaded = true;
+		}
+	}
+
+	return ret;
+
+sst_load_base_firmware_failed:
+	release_firmware(ctx->fw);
+	ctx->fw = NULL;
+	return ret;
+}
+
+/*
+ * Decide the D0i3 state that can be targeted based on the usecase
+ * ref counts and DSP state
+ *
+ * Decision Matrix:  (X= dont care; state = target state)
+ *
+ * DSP state != SKL_DSP_RUNNING ; state = no d0i3
+ *
+ * DSP state == SKL_DSP_RUNNING , the following matrix applies
+ * non_d0i3 >0; streaming =X; non_streaming =X; state = no d0i3
+ * non_d0i3 =X; streaming =0; non_streaming =0; state = no d0i3
+ * non_d0i3 =0; streaming >0; non_streaming =X; state = streaming d0i3
+ * non_d0i3 =0; streaming =0; non_streaming =X; state = non-streaming d0i3
+ */
+static int bxt_d0i3_target_state(struct sst_dsp *ctx)
+{
+	struct skl_dev *skl = ctx->thread_context;
+	struct skl_d0i3_data *d0i3 = &skl->d0i3;
+
+	if (skl->cores.state[SKL_DSP_CORE0_ID] != SKL_DSP_RUNNING)
+		return SKL_DSP_D0I3_NONE;
+
+	if (d0i3->non_d0i3)
+		return SKL_DSP_D0I3_NONE;
+	else if (d0i3->streaming)
+		return SKL_DSP_D0I3_STREAMING;
+	else if (d0i3->non_streaming)
+		return SKL_DSP_D0I3_NON_STREAMING;
+	else
+		return SKL_DSP_D0I3_NONE;
+}
+
+static void bxt_set_dsp_D0i3(struct work_struct *work)
+{
+	int ret;
+	struct skl_ipc_d0ix_msg msg;
+	struct skl_dev *skl = container_of(work,
+			struct skl_dev, d0i3.work.work);
+	struct sst_dsp *ctx = skl->dsp;
+	struct skl_d0i3_data *d0i3 = &skl->d0i3;
+	int target_state;
+
+	dev_dbg(ctx->dev, "In %s:\n", __func__);
+
+	/* D0i3 entry allowed only if core 0 alone is running */
+	if (skl_dsp_get_enabled_cores(ctx) !=  SKL_DSP_CORE0_MASK) {
+		dev_warn(ctx->dev,
+				"D0i3 allowed when only core0 running:Exit\n");
+		return;
+	}
+
+	target_state = bxt_d0i3_target_state(ctx);
+	if (target_state == SKL_DSP_D0I3_NONE)
+		return;
+
+	msg.instance_id = 0;
+	msg.module_id = 0;
+	msg.wake = 1;
+	msg.streaming = 0;
+	if (target_state == SKL_DSP_D0I3_STREAMING)
+		msg.streaming = 1;
+
+	ret =  skl_ipc_set_d0ix(&skl->ipc, &msg);
+
+	if (ret < 0) {
+		dev_err(ctx->dev, "Failed to set DSP to D0i3 state\n");
+		return;
+	}
+
+	/* Set Vendor specific register D0I3C.I3 to enable D0i3*/
+	if (skl->update_d0i3c)
+		skl->update_d0i3c(skl->dev, true);
+
+	d0i3->state = target_state;
+	skl->cores.state[SKL_DSP_CORE0_ID] = SKL_DSP_RUNNING_D0I3;
+}
+
+static int bxt_schedule_dsp_D0i3(struct sst_dsp *ctx)
+{
+	struct skl_dev *skl = ctx->thread_context;
+	struct skl_d0i3_data *d0i3 = &skl->d0i3;
+
+	/* Schedule D0i3 only if the usecase ref counts are appropriate */
+	if (bxt_d0i3_target_state(ctx) != SKL_DSP_D0I3_NONE) {
+
+		dev_dbg(ctx->dev, "%s: Schedule D0i3\n", __func__);
+
+		schedule_delayed_work(&d0i3->work,
+				msecs_to_jiffies(BXT_D0I3_DELAY));
+	}
+
+	return 0;
+}
+
+static int bxt_set_dsp_D0i0(struct sst_dsp *ctx)
+{
+	int ret;
+	struct skl_ipc_d0ix_msg msg;
+	struct skl_dev *skl = ctx->thread_context;
+
+	dev_dbg(ctx->dev, "In %s:\n", __func__);
+
+	/* First Cancel any pending attempt to put DSP to D0i3 */
+	cancel_delayed_work_sync(&skl->d0i3.work);
+
+	/* If DSP is currently in D0i3, bring it to D0i0 */
+	if (skl->cores.state[SKL_DSP_CORE0_ID] != SKL_DSP_RUNNING_D0I3)
+		return 0;
+
+	dev_dbg(ctx->dev, "Set DSP to D0i0\n");
+
+	msg.instance_id = 0;
+	msg.module_id = 0;
+	msg.streaming = 0;
+	msg.wake = 0;
+
+	if (skl->d0i3.state == SKL_DSP_D0I3_STREAMING)
+		msg.streaming = 1;
+
+	/* Clear Vendor specific register D0I3C.I3 to disable D0i3*/
+	if (skl->update_d0i3c)
+		skl->update_d0i3c(skl->dev, false);
+
+	ret =  skl_ipc_set_d0ix(&skl->ipc, &msg);
+	if (ret < 0) {
+		dev_err(ctx->dev, "Failed to set DSP to D0i0\n");
+		return ret;
+	}
+
+	skl->cores.state[SKL_DSP_CORE0_ID] = SKL_DSP_RUNNING;
+	skl->d0i3.state = SKL_DSP_D0I3_NONE;
+
+	return 0;
+}
+
+static int bxt_set_dsp_D0(struct sst_dsp *ctx, unsigned int core_id)
+{
+	struct skl_dev *skl = ctx->thread_context;
+	int ret;
+	struct skl_ipc_dxstate_info dx;
+	unsigned int core_mask = SKL_DSP_CORE_MASK(core_id);
+
+	if (skl->fw_loaded == false) {
+		skl->boot_complete = false;
+		ret = bxt_load_base_firmware(ctx);
+		if (ret < 0) {
+			dev_err(ctx->dev, "reload fw failed: %d\n", ret);
+			return ret;
+		}
+
+		if (skl->lib_count > 1) {
+			ret = bxt_load_library(ctx, skl->lib_info,
+						skl->lib_count);
+			if (ret < 0) {
+				dev_err(ctx->dev, "reload libs failed: %d\n", ret);
+				return ret;
+			}
+		}
+		skl->cores.state[core_id] = SKL_DSP_RUNNING;
+		return ret;
+	}
+
+	/* If core 0 is being turned on, turn on core 1 as well */
+	if (core_id == SKL_DSP_CORE0_ID)
+		ret = skl_dsp_core_power_up(ctx, core_mask |
+				SKL_DSP_CORE_MASK(1));
+	else
+		ret = skl_dsp_core_power_up(ctx, core_mask);
+
+	if (ret < 0)
+		goto err;
+
+	if (core_id == SKL_DSP_CORE0_ID) {
+
+		/*
+		 * Enable interrupt after SPA is set and before
+		 * DSP is unstalled
+		 */
+		skl_ipc_int_enable(ctx);
+		skl_ipc_op_int_enable(ctx);
+		skl->boot_complete = false;
+	}
+
+	ret = skl_dsp_start_core(ctx, core_mask);
+	if (ret < 0)
+		goto err;
+
+	if (core_id == SKL_DSP_CORE0_ID) {
+		ret = wait_event_timeout(skl->boot_wait,
+				skl->boot_complete,
+				msecs_to_jiffies(SKL_IPC_BOOT_MSECS));
+
+	/* If core 1 was turned on for booting core 0, turn it off */
+		skl_dsp_core_power_down(ctx, SKL_DSP_CORE_MASK(1));
+		if (ret == 0) {
+			dev_err(ctx->dev, "%s: DSP boot timeout\n", __func__);
+			dev_err(ctx->dev, "Error code=0x%x: FW status=0x%x\n",
+				sst_dsp_shim_read(ctx, BXT_ADSP_ERROR_CODE),
+				sst_dsp_shim_read(ctx, BXT_ADSP_FW_STATUS));
+			dev_err(ctx->dev, "Failed to set core0 to D0 state\n");
+			ret = -EIO;
+			goto err;
+		}
+	}
+
+	/* Tell FW if additional core in now On */
+
+	if (core_id != SKL_DSP_CORE0_ID) {
+		dx.core_mask = core_mask;
+		dx.dx_mask = core_mask;
+
+		ret = skl_ipc_set_dx(&skl->ipc, BXT_INSTANCE_ID,
+					BXT_BASE_FW_MODULE_ID, &dx);
+		if (ret < 0) {
+			dev_err(ctx->dev, "IPC set_dx for core %d fail: %d\n",
+								core_id, ret);
+			goto err;
+		}
+	}
+
+	skl->cores.state[core_id] = SKL_DSP_RUNNING;
+	return 0;
+err:
+	if (core_id == SKL_DSP_CORE0_ID)
+		core_mask |= SKL_DSP_CORE_MASK(1);
+	skl_dsp_disable_core(ctx, core_mask);
+
+	return ret;
+}
+
+static int bxt_set_dsp_D3(struct sst_dsp *ctx, unsigned int core_id)
+{
+	int ret;
+	struct skl_ipc_dxstate_info dx;
+	struct skl_dev *skl = ctx->thread_context;
+	unsigned int core_mask = SKL_DSP_CORE_MASK(core_id);
+
+	dx.core_mask = core_mask;
+	dx.dx_mask = SKL_IPC_D3_MASK;
+
+	dev_dbg(ctx->dev, "core mask=%x dx_mask=%x\n",
+			dx.core_mask, dx.dx_mask);
+
+	ret = skl_ipc_set_dx(&skl->ipc, BXT_INSTANCE_ID,
+				BXT_BASE_FW_MODULE_ID, &dx);
+	if (ret < 0) {
+		dev_err(ctx->dev,
+		"Failed to set DSP to D3:core id = %d;Continue reset\n",
+		core_id);
+		/*
+		 * In case of D3 failure, re-download the firmware, so set
+		 * fw_loaded to false.
+		 */
+		skl->fw_loaded = false;
+	}
+
+	if (core_id == SKL_DSP_CORE0_ID) {
+		/* disable Interrupt */
+		skl_ipc_op_int_disable(ctx);
+		skl_ipc_int_disable(ctx);
+	}
+	ret = skl_dsp_disable_core(ctx, core_mask);
+	if (ret < 0) {
+		dev_err(ctx->dev, "Failed to disable core %d\n", ret);
+		return ret;
+	}
+	skl->cores.state[core_id] = SKL_DSP_RESET;
+	return 0;
+}
+
+static const struct skl_dsp_fw_ops bxt_fw_ops = {
+	.set_state_D0 = bxt_set_dsp_D0,
+	.set_state_D3 = bxt_set_dsp_D3,
+	.set_state_D0i3 = bxt_schedule_dsp_D0i3,
+	.set_state_D0i0 = bxt_set_dsp_D0i0,
+	.load_fw = bxt_load_base_firmware,
+	.get_fw_errcode = bxt_get_errorcode,
+	.load_library = bxt_load_library,
+};
+
+static struct sst_ops skl_ops = {
+	.irq_handler = skl_dsp_sst_interrupt,
+	.write = sst_shim32_write,
+	.read = sst_shim32_read,
+	.free = skl_dsp_free,
+};
+
+static struct sst_dsp_device skl_dev = {
+	.thread = skl_dsp_irq_thread_handler,
+	.ops = &skl_ops,
+};
+
+int bxt_sst_dsp_init(struct device *dev, void __iomem *mmio_base, int irq,
+			const char *fw_name, struct skl_dsp_loader_ops dsp_ops,
+			struct skl_dev **dsp)
+{
+	struct skl_dev *skl;
+	struct sst_dsp *sst;
+	int ret;
+
+	ret = skl_sst_ctx_init(dev, irq, fw_name, dsp_ops, dsp, &skl_dev);
+	if (ret < 0) {
+		dev_err(dev, "%s: no device\n", __func__);
+		return ret;
+	}
+
+	skl = *dsp;
+	sst = skl->dsp;
+	sst->fw_ops = bxt_fw_ops;
+	sst->addr.lpe = mmio_base;
+	sst->addr.shim = mmio_base;
+	sst->addr.sram0_base = BXT_ADSP_SRAM0_BASE;
+	sst->addr.sram1_base = BXT_ADSP_SRAM1_BASE;
+	sst->addr.w0_stat_sz = SKL_ADSP_W0_STAT_SZ;
+	sst->addr.w0_up_sz = SKL_ADSP_W0_UP_SZ;
+
+	sst_dsp_mailbox_init(sst, (BXT_ADSP_SRAM0_BASE + SKL_ADSP_W0_STAT_SZ),
+			SKL_ADSP_W0_UP_SZ, BXT_ADSP_SRAM1_BASE, SKL_ADSP_W1_SZ);
+
+	ret = skl_ipc_init(dev, skl);
+	if (ret) {
+		skl_dsp_free(sst);
+		return ret;
+	}
+
+	/* set the D0i3 check */
+	skl->ipc.ops.check_dsp_lp_on = skl_ipc_check_D0i0;
+
+	skl->boot_complete = false;
+	init_waitqueue_head(&skl->boot_wait);
+	INIT_DELAYED_WORK(&skl->d0i3.work, bxt_set_dsp_D0i3);
+	skl->d0i3.state = SKL_DSP_D0I3_NONE;
+
+	return skl_dsp_acquire_irq(sst);
+}
+EXPORT_SYMBOL_GPL(bxt_sst_dsp_init);
+
+int bxt_sst_init_fw(struct device *dev, struct skl_dev *skl)
+{
+	int ret;
+	struct sst_dsp *sst = skl->dsp;
+
+	ret = sst->fw_ops.load_fw(sst);
+	if (ret < 0) {
+		dev_err(dev, "Load base fw failed: %x\n", ret);
+		return ret;
+	}
+
+	skl_dsp_init_core_state(sst);
+
+	if (skl->lib_count > 1) {
+		ret = sst->fw_ops.load_library(sst, skl->lib_info,
+						skl->lib_count);
+		if (ret < 0) {
+			dev_err(dev, "Load Library failed : %x\n", ret);
+			return ret;
+		}
+	}
+	skl->is_first_boot = false;
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(bxt_sst_init_fw);
+
+void bxt_sst_dsp_cleanup(struct device *dev, struct skl_dev *skl)
+{
+
+	skl_release_library(skl->lib_info, skl->lib_count);
+	if (skl->dsp->fw)
+		release_firmware(skl->dsp->fw);
+	skl_freeup_uuid_list(skl);
+	skl_ipc_free(&skl->ipc);
+	skl->dsp->ops->free(skl->dsp);
+}
+EXPORT_SYMBOL_GPL(bxt_sst_dsp_cleanup);
+
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("Intel Broxton IPC driver");