Merge Linus master into drm-next

The merge is clean, but the arm build fails afterwards,
due to API changes in the regulator tree.

I've included the patch into the merge to fix the build.

Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 463 insertions, 0 deletions

diff --git a/sound/soc/intel/atom/sst/sst_loader.c b/sound/soc/intel/atom/sst/sst_loader.c
new file mode 100644
index 000000000000..33917146d9c4
--- /dev/null
+++ b/sound/soc/intel/atom/sst/sst_loader.c
@@ -0,0 +1,463 @@
+/*
+ *  sst_dsp.c - Intel SST Driver for audio engine
+ *
+ *  Copyright (C) 2008-14	Intel Corp
+ *  Authors:	Vinod Koul <vinod.koul@intel.com>
+ *		Harsha Priya <priya.harsha@intel.com>
+ *		Dharageswari R <dharageswari.r@intel.com>
+ *		KP Jeeja <jeeja.kp@intel.com>
+ *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; version 2 of the License.
+ *
+ *  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.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ *  This file contains all dsp controlling functions like firmware download,
+ * setting/resetting dsp cores, etc
+ */
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <linux/fs.h>
+#include <linux/sched.h>
+#include <linux/firmware.h>
+#include <linux/dmaengine.h>
+#include <linux/pm_runtime.h>
+#include <linux/pm_qos.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <sound/compress_driver.h>
+#include <asm/platform_sst_audio.h>
+#include "../sst-mfld-platform.h"
+#include "sst.h"
+#include "../../common/sst-dsp.h"
+
+void memcpy32_toio(void __iomem *dst, const void *src, int count)
+{
+	/* __iowrite32_copy uses 32-bit count values so divide by 4 for
+	 * right count in words
+	 */
+	__iowrite32_copy(dst, src, count/4);
+}
+
+void memcpy32_fromio(void *dst, const void __iomem *src, int count)
+{
+	/* __iowrite32_copy uses 32-bit count values so divide by 4 for
+	 * right count in words
+	 */
+	__iowrite32_copy(dst, src, count/4);
+}
+
+/**
+ * intel_sst_reset_dsp_mrfld - Resetting SST DSP
+ *
+ * This resets DSP in case of MRFLD platfroms
+ */
+int intel_sst_reset_dsp_mrfld(struct intel_sst_drv *sst_drv_ctx)
+{
+	union config_status_reg_mrfld csr;
+
+	dev_dbg(sst_drv_ctx->dev, "sst: Resetting the DSP in mrfld\n");
+	csr.full = sst_shim_read64(sst_drv_ctx->shim, SST_CSR);
+
+	dev_dbg(sst_drv_ctx->dev, "value:0x%llx\n", csr.full);
+
+	csr.full |= 0x7;
+	sst_shim_write64(sst_drv_ctx->shim, SST_CSR, csr.full);
+	csr.full = sst_shim_read64(sst_drv_ctx->shim, SST_CSR);
+
+	dev_dbg(sst_drv_ctx->dev, "value:0x%llx\n", csr.full);
+
+	csr.full &= ~(0x1);
+	sst_shim_write64(sst_drv_ctx->shim, SST_CSR, csr.full);
+
+	csr.full = sst_shim_read64(sst_drv_ctx->shim, SST_CSR);
+	dev_dbg(sst_drv_ctx->dev, "value:0x%llx\n", csr.full);
+	return 0;
+}
+
+/**
+ * sst_start_merrifield - Start the SST DSP processor
+ *
+ * This starts the DSP in MERRIFIELD platfroms
+ */
+int sst_start_mrfld(struct intel_sst_drv *sst_drv_ctx)
+{
+	union config_status_reg_mrfld csr;
+
+	dev_dbg(sst_drv_ctx->dev, "sst: Starting the DSP in mrfld LALALALA\n");
+	csr.full = sst_shim_read64(sst_drv_ctx->shim, SST_CSR);
+	dev_dbg(sst_drv_ctx->dev, "value:0x%llx\n", csr.full);
+
+	csr.full |= 0x7;
+	sst_shim_write64(sst_drv_ctx->shim, SST_CSR, csr.full);
+
+	csr.full = sst_shim_read64(sst_drv_ctx->shim, SST_CSR);
+	dev_dbg(sst_drv_ctx->dev, "value:0x%llx\n", csr.full);
+
+	csr.part.xt_snoop = 1;
+	csr.full &= ~(0x5);
+	sst_shim_write64(sst_drv_ctx->shim, SST_CSR, csr.full);
+
+	csr.full = sst_shim_read64(sst_drv_ctx->shim, SST_CSR);
+	dev_dbg(sst_drv_ctx->dev, "sst: Starting the DSP_merrifield:%llx\n",
+			csr.full);
+	return 0;
+}
+
+static int sst_validate_fw_image(struct intel_sst_drv *ctx, unsigned long size,
+		struct fw_module_header **module, u32 *num_modules)
+{
+	struct sst_fw_header *header;
+	const void *sst_fw_in_mem = ctx->fw_in_mem;
+
+	dev_dbg(ctx->dev, "Enter\n");
+
+	/* Read the header information from the data pointer */
+	header = (struct sst_fw_header *)sst_fw_in_mem;
+	dev_dbg(ctx->dev,
+		"header sign=%s size=%x modules=%x fmt=%x size=%zx\n",
+		header->signature, header->file_size, header->modules,
+		header->file_format, sizeof(*header));
+
+	/* verify FW */
+	if ((strncmp(header->signature, SST_FW_SIGN, 4) != 0) ||
+		(size != header->file_size + sizeof(*header))) {
+		/* Invalid FW signature */
+		dev_err(ctx->dev, "InvalidFW sign/filesize mismatch\n");
+		return -EINVAL;
+	}
+	*num_modules = header->modules;
+	*module = (void *)sst_fw_in_mem + sizeof(*header);
+
+	return 0;
+}
+
+/*
+ * sst_fill_memcpy_list - Fill the memcpy list
+ *
+ * @memcpy_list: List to be filled
+ * @destn: Destination addr to be filled in the list
+ * @src: Source addr to be filled in the list
+ * @size: Size to be filled in the list
+ *
+ * Adds the node to the list after required fields
+ * are populated in the node
+ */
+static int sst_fill_memcpy_list(struct list_head *memcpy_list,
+			void *destn, const void *src, u32 size, bool is_io)
+{
+	struct sst_memcpy_list *listnode;
+
+	listnode = kzalloc(sizeof(*listnode), GFP_KERNEL);
+	if (listnode == NULL)
+		return -ENOMEM;
+	listnode->dstn = destn;
+	listnode->src = src;
+	listnode->size = size;
+	listnode->is_io = is_io;
+	list_add_tail(&listnode->memcpylist, memcpy_list);
+
+	return 0;
+}
+
+/**
+ * sst_parse_module_memcpy - Parse audio FW modules and populate the memcpy list
+ *
+ * @sst_drv_ctx		: driver context
+ * @module		: FW module header
+ * @memcpy_list	: Pointer to the list to be populated
+ * Create the memcpy list as the number of block to be copied
+ * returns error or 0 if module sizes are proper
+ */
+static int sst_parse_module_memcpy(struct intel_sst_drv *sst_drv_ctx,
+		struct fw_module_header *module, struct list_head *memcpy_list)
+{
+	struct fw_block_info *block;
+	u32 count;
+	int ret_val = 0;
+	void __iomem *ram_iomem;
+
+	dev_dbg(sst_drv_ctx->dev, "module sign %s size %x blocks %x type %x\n",
+			module->signature, module->mod_size,
+			module->blocks, module->type);
+	dev_dbg(sst_drv_ctx->dev, "module entrypoint 0x%x\n", module->entry_point);
+
+	block = (void *)module + sizeof(*module);
+
+	for (count = 0; count < module->blocks; count++) {
+		if (block->size <= 0) {
+			dev_err(sst_drv_ctx->dev, "block size invalid\n");
+			return -EINVAL;
+		}
+		switch (block->type) {
+		case SST_IRAM:
+			ram_iomem = sst_drv_ctx->iram;
+			break;
+		case SST_DRAM:
+			ram_iomem = sst_drv_ctx->dram;
+			break;
+		case SST_DDR:
+			ram_iomem = sst_drv_ctx->ddr;
+			break;
+		case SST_CUSTOM_INFO:
+			block = (void *)block + sizeof(*block) + block->size;
+			continue;
+		default:
+			dev_err(sst_drv_ctx->dev, "wrong ram type0x%x in block0x%x\n",
+					block->type, count);
+			return -EINVAL;
+		}
+
+		ret_val = sst_fill_memcpy_list(memcpy_list,
+				ram_iomem + block->ram_offset,
+				(void *)block + sizeof(*block), block->size, 1);
+		if (ret_val)
+			return ret_val;
+
+		block = (void *)block + sizeof(*block) + block->size;
+	}
+	return 0;
+}
+
+/**
+ * sst_parse_fw_memcpy - parse the firmware image & populate the list for memcpy
+ *
+ * @ctx			: pointer to drv context
+ * @size		: size of the firmware
+ * @fw_list		: pointer to list_head to be populated
+ * This function parses the FW image and saves the parsed image in the list
+ * for memcpy
+ */
+static int sst_parse_fw_memcpy(struct intel_sst_drv *ctx, unsigned long size,
+				struct list_head *fw_list)
+{
+	struct fw_module_header *module;
+	u32 count, num_modules;
+	int ret_val;
+
+	ret_val = sst_validate_fw_image(ctx, size, &module, &num_modules);
+	if (ret_val)
+		return ret_val;
+
+	for (count = 0; count < num_modules; count++) {
+		ret_val = sst_parse_module_memcpy(ctx, module, fw_list);
+		if (ret_val)
+			return ret_val;
+		module = (void *)module + sizeof(*module) + module->mod_size;
+	}
+
+	return 0;
+}
+
+/**
+ * sst_do_memcpy - function initiates the memcpy
+ *
+ * @memcpy_list: Pter to memcpy list on which the memcpy needs to be initiated
+ *
+ * Triggers the memcpy
+ */
+static void sst_do_memcpy(struct list_head *memcpy_list)
+{
+	struct sst_memcpy_list *listnode;
+
+	list_for_each_entry(listnode, memcpy_list, memcpylist) {
+		if (listnode->is_io == true)
+			memcpy32_toio((void __iomem *)listnode->dstn,
+					listnode->src, listnode->size);
+		else
+			memcpy(listnode->dstn, listnode->src, listnode->size);
+	}
+}
+
+void sst_memcpy_free_resources(struct intel_sst_drv *sst_drv_ctx)
+{
+	struct sst_memcpy_list *listnode, *tmplistnode;
+
+	/* Free the list */
+	if (!list_empty(&sst_drv_ctx->memcpy_list)) {
+		list_for_each_entry_safe(listnode, tmplistnode,
+				&sst_drv_ctx->memcpy_list, memcpylist) {
+			list_del(&listnode->memcpylist);
+			kfree(listnode);
+		}
+	}
+}
+
+static int sst_cache_and_parse_fw(struct intel_sst_drv *sst,
+		const struct firmware *fw)
+{
+	int retval = 0;
+
+	sst->fw_in_mem = kzalloc(fw->size, GFP_KERNEL);
+	if (!sst->fw_in_mem) {
+		retval = -ENOMEM;
+		goto end_release;
+	}
+	dev_dbg(sst->dev, "copied fw to %p", sst->fw_in_mem);
+	dev_dbg(sst->dev, "phys: %lx", (unsigned long)virt_to_phys(sst->fw_in_mem));
+	memcpy(sst->fw_in_mem, fw->data, fw->size);
+	retval = sst_parse_fw_memcpy(sst, fw->size, &sst->memcpy_list);
+	if (retval) {
+		dev_err(sst->dev, "Failed to parse fw\n");
+		kfree(sst->fw_in_mem);
+		sst->fw_in_mem = NULL;
+	}
+
+end_release:
+	release_firmware(fw);
+	return retval;
+
+}
+
+void sst_firmware_load_cb(const struct firmware *fw, void *context)
+{
+	struct intel_sst_drv *ctx = context;
+
+	dev_dbg(ctx->dev, "Enter\n");
+
+	if (fw == NULL) {
+		dev_err(ctx->dev, "request fw failed\n");
+		return;
+	}
+
+	mutex_lock(&ctx->sst_lock);
+
+	if (ctx->sst_state != SST_RESET ||
+			ctx->fw_in_mem != NULL) {
+		release_firmware(fw);
+		mutex_unlock(&ctx->sst_lock);
+		return;
+	}
+
+	dev_dbg(ctx->dev, "Request Fw completed\n");
+	sst_cache_and_parse_fw(ctx, fw);
+	mutex_unlock(&ctx->sst_lock);
+}
+
+/*
+ * sst_request_fw - requests audio fw from kernel and saves a copy
+ *
+ * This function requests the SST FW from the kernel, parses it and
+ * saves a copy in the driver context
+ */
+static int sst_request_fw(struct intel_sst_drv *sst)
+{
+	int retval = 0;
+	const struct firmware *fw;
+
+	retval = request_firmware(&fw, sst->firmware_name, sst->dev);
+	if (fw == NULL) {
+		dev_err(sst->dev, "fw is returning as null\n");
+		return -EINVAL;
+	}
+	if (retval) {
+		dev_err(sst->dev, "request fw failed %d\n", retval);
+		return retval;
+	}
+	mutex_lock(&sst->sst_lock);
+	retval = sst_cache_and_parse_fw(sst, fw);
+	mutex_unlock(&sst->sst_lock);
+
+	return retval;
+}
+
+/*
+ * Writing the DDR physical base to DCCM offset
+ * so that FW can use it to setup TLB
+ */
+static void sst_dccm_config_write(void __iomem *dram_base,
+		unsigned int ddr_base)
+{
+	void __iomem *addr;
+	u32 bss_reset = 0;
+
+	addr = (void __iomem *)(dram_base + MRFLD_FW_DDR_BASE_OFFSET);
+	memcpy32_toio(addr, (void *)&ddr_base, sizeof(u32));
+	bss_reset |= (1 << MRFLD_FW_BSS_RESET_BIT);
+	addr = (void __iomem *)(dram_base + MRFLD_FW_FEATURE_BASE_OFFSET);
+	memcpy32_toio(addr, &bss_reset, sizeof(u32));
+
+}
+
+void sst_post_download_mrfld(struct intel_sst_drv *ctx)
+{
+	sst_dccm_config_write(ctx->dram, ctx->ddr_base);
+	dev_dbg(ctx->dev, "config written to DCCM\n");
+}
+
+/**
+ * sst_load_fw - function to load FW into DSP
+ * Transfers the FW to DSP using dma/memcpy
+ */
+int sst_load_fw(struct intel_sst_drv *sst_drv_ctx)
+{
+	int ret_val = 0;
+	struct sst_block *block;
+
+	dev_dbg(sst_drv_ctx->dev, "sst_load_fw\n");
+
+	if (sst_drv_ctx->sst_state !=  SST_RESET ||
+			sst_drv_ctx->sst_state == SST_SHUTDOWN)
+		return -EAGAIN;
+
+	if (!sst_drv_ctx->fw_in_mem) {
+		dev_dbg(sst_drv_ctx->dev, "sst: FW not in memory retry to download\n");
+		ret_val = sst_request_fw(sst_drv_ctx);
+		if (ret_val)
+			return ret_val;
+	}
+
+	BUG_ON(!sst_drv_ctx->fw_in_mem);
+	block = sst_create_block(sst_drv_ctx, 0, FW_DWNL_ID);
+	if (block == NULL)
+		return -ENOMEM;
+
+	/* Prevent C-states beyond C6 */
+	pm_qos_update_request(sst_drv_ctx->qos, 0);
+
+	sst_drv_ctx->sst_state = SST_FW_LOADING;
+
+	ret_val = sst_drv_ctx->ops->reset(sst_drv_ctx);
+	if (ret_val)
+		goto restore;
+
+	sst_do_memcpy(&sst_drv_ctx->memcpy_list);
+
+	/* Write the DRAM/DCCM config before enabling FW */
+	if (sst_drv_ctx->ops->post_download)
+		sst_drv_ctx->ops->post_download(sst_drv_ctx);
+
+	/* bring sst out of reset */
+	ret_val = sst_drv_ctx->ops->start(sst_drv_ctx);
+	if (ret_val)
+		goto restore;
+
+	ret_val = sst_wait_timeout(sst_drv_ctx, block);
+	if (ret_val) {
+		dev_err(sst_drv_ctx->dev, "fw download failed %d\n" , ret_val);
+		/* FW download failed due to timeout */
+		ret_val = -EBUSY;
+
+	}
+
+
+restore:
+	/* Re-enable Deeper C-states beyond C6 */
+	pm_qos_update_request(sst_drv_ctx->qos, PM_QOS_DEFAULT_VALUE);
+	sst_free_block(sst_drv_ctx, block);
+	dev_dbg(sst_drv_ctx->dev, "fw load successful!!!\n");
+
+	if (sst_drv_ctx->ops->restore_dsp_context)
+		sst_drv_ctx->ops->restore_dsp_context();
+	sst_drv_ctx->sst_state = SST_FW_RUNNING;
+	return ret_val;
+}
+