drm/i915/dmc: s/intel_csr.c/intel_dmc.c and s/intel_csr.h/intel_dmc.h

Finally, rename the header and source file from csr to dmc.

v2: Add file rename in Documentation.
- Place headers in orders. (Jani)

Cc: Jani Nikula <jani.nikula@linux.intel.com>
Signed-off-by: Anusha Srivatsa <anusha.srivatsa@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210518213444.11420-6-anusha.srivatsa@intel.com

1 files changed, 0 insertions, 824 deletions

diff --git a/drivers/gpu/drm/i915/display/intel_csr.c b/drivers/gpu/drm/i915/display/intel_csr.c
deleted file mode 100644
index ae1dfafaff9a..000000000000
--- a/drivers/gpu/drm/i915/display/intel_csr.c
+++ /dev/null
@@ -1,824 +0,0 @@
-/*
- * Copyright © 2014 Intel Corporation
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
- * IN THE SOFTWARE.
- *
- */
-
-#include <linux/firmware.h>
-
-#include "i915_drv.h"
-#include "i915_reg.h"
-#include "intel_csr.h"
-#include "intel_de.h"
-
-/**
- * DOC: DMC firmware support
- *
- * From gen9 onwards we have newly added DMC (Display microcontroller) in display
- * engine to save and restore the state of display engine when it enter into
- * low-power state and comes back to normal.
- */
-
-#define DMC_PATH(platform, major, minor) \
-	"i915/"				 \
-	__stringify(platform) "_dmc_ver" \
-	__stringify(major) "_"		 \
-	__stringify(minor) ".bin"
-
-#define GEN12_DMC_MAX_FW_SIZE		ICL_DMC_MAX_FW_SIZE
-
-#define ADLS_DMC_PATH			DMC_PATH(adls, 2, 01)
-#define ADLS_DMC_VERSION_REQUIRED	DMC_VERSION(2, 1)
-MODULE_FIRMWARE(ADLS_DMC_PATH);
-
-#define DG1_DMC_PATH			DMC_PATH(dg1, 2, 02)
-#define DG1_DMC_VERSION_REQUIRED	DMC_VERSION(2, 2)
-MODULE_FIRMWARE(DG1_DMC_PATH);
-
-#define RKL_DMC_PATH			DMC_PATH(rkl, 2, 02)
-#define RKL_DMC_VERSION_REQUIRED	DMC_VERSION(2, 2)
-MODULE_FIRMWARE(RKL_DMC_PATH);
-
-#define TGL_DMC_PATH			DMC_PATH(tgl, 2, 08)
-#define TGL_DMC_VERSION_REQUIRED	DMC_VERSION(2, 8)
-MODULE_FIRMWARE(TGL_DMC_PATH);
-
-#define ICL_DMC_PATH			DMC_PATH(icl, 1, 09)
-#define ICL_DMC_VERSION_REQUIRED	DMC_VERSION(1, 9)
-#define ICL_DMC_MAX_FW_SIZE		0x6000
-MODULE_FIRMWARE(ICL_DMC_PATH);
-
-#define CNL_DMC_PATH			DMC_PATH(cnl, 1, 07)
-#define CNL_DMC_VERSION_REQUIRED	DMC_VERSION(1, 7)
-#define CNL_DMC_MAX_FW_SIZE		GLK_DMC_MAX_FW_SIZE
-MODULE_FIRMWARE(CNL_DMC_PATH);
-
-#define GLK_DMC_PATH			DMC_PATH(glk, 1, 04)
-#define GLK_DMC_VERSION_REQUIRED	DMC_VERSION(1, 4)
-#define GLK_DMC_MAX_FW_SIZE		0x4000
-MODULE_FIRMWARE(GLK_DMC_PATH);
-
-#define KBL_DMC_PATH			DMC_PATH(kbl, 1, 04)
-#define KBL_DMC_VERSION_REQUIRED	DMC_VERSION(1, 4)
-#define KBL_DMC_MAX_FW_SIZE		BXT_DMC_MAX_FW_SIZE
-MODULE_FIRMWARE(KBL_DMC_PATH);
-
-#define SKL_DMC_PATH			DMC_PATH(skl, 1, 27)
-#define SKL_DMC_VERSION_REQUIRED	DMC_VERSION(1, 27)
-#define SKL_DMC_MAX_FW_SIZE		BXT_DMC_MAX_FW_SIZE
-MODULE_FIRMWARE(SKL_DMC_PATH);
-
-#define BXT_DMC_PATH			DMC_PATH(bxt, 1, 07)
-#define BXT_DMC_VERSION_REQUIRED	DMC_VERSION(1, 7)
-#define BXT_DMC_MAX_FW_SIZE		0x3000
-MODULE_FIRMWARE(BXT_DMC_PATH);
-
-#define DMC_DEFAULT_FW_OFFSET		0xFFFFFFFF
-#define PACKAGE_MAX_FW_INFO_ENTRIES	20
-#define PACKAGE_V2_MAX_FW_INFO_ENTRIES	32
-#define DMC_V1_MAX_MMIO_COUNT		8
-#define DMC_V3_MAX_MMIO_COUNT		20
-
-struct intel_css_header {
-	/* 0x09 for DMC */
-	u32 module_type;
-
-	/* Includes the DMC specific header in dwords */
-	u32 header_len;
-
-	/* always value would be 0x10000 */
-	u32 header_ver;
-
-	/* Not used */
-	u32 module_id;
-
-	/* Not used */
-	u32 module_vendor;
-
-	/* in YYYYMMDD format */
-	u32 date;
-
-	/* Size in dwords (CSS_Headerlen + PackageHeaderLen + dmc FWsLen)/4 */
-	u32 size;
-
-	/* Not used */
-	u32 key_size;
-
-	/* Not used */
-	u32 modulus_size;
-
-	/* Not used */
-	u32 exponent_size;
-
-	/* Not used */
-	u32 reserved1[12];
-
-	/* Major Minor */
-	u32 version;
-
-	/* Not used */
-	u32 reserved2[8];
-
-	/* Not used */
-	u32 kernel_header_info;
-} __packed;
-
-struct intel_fw_info {
-	u8 reserved1;
-
-	/* reserved on package_header version 1, must be 0 on version 2 */
-	u8 dmc_id;
-
-	/* Stepping (A, B, C, ..., *). * is a wildcard */
-	char stepping;
-
-	/* Sub-stepping (0, 1, ..., *). * is a wildcard */
-	char substepping;
-
-	u32 offset;
-	u32 reserved2;
-} __packed;
-
-struct intel_package_header {
-	/* DMC container header length in dwords */
-	u8 header_len;
-
-	/* 0x01, 0x02 */
-	u8 header_ver;
-
-	u8 reserved[10];
-
-	/* Number of valid entries in the FWInfo array below */
-	u32 num_entries;
-} __packed;
-
-struct intel_dmc_header_base {
-	/* always value would be 0x40403E3E */
-	u32 signature;
-
-	/* DMC binary header length */
-	u8 header_len;
-
-	/* 0x01 */
-	u8 header_ver;
-
-	/* Reserved */
-	u16 dmcc_ver;
-
-	/* Major, Minor */
-	u32 project;
-
-	/* Firmware program size (excluding header) in dwords */
-	u32 fw_size;
-
-	/* Major Minor version */
-	u32 fw_version;
-} __packed;
-
-struct intel_dmc_header_v1 {
-	struct intel_dmc_header_base base;
-
-	/* Number of valid MMIO cycles present. */
-	u32 mmio_count;
-
-	/* MMIO address */
-	u32 mmioaddr[DMC_V1_MAX_MMIO_COUNT];
-
-	/* MMIO data */
-	u32 mmiodata[DMC_V1_MAX_MMIO_COUNT];
-
-	/* FW filename  */
-	char dfile[32];
-
-	u32 reserved1[2];
-} __packed;
-
-struct intel_dmc_header_v3 {
-	struct intel_dmc_header_base base;
-
-	/* DMC RAM start MMIO address */
-	u32 start_mmioaddr;
-
-	u32 reserved[9];
-
-	/* FW filename */
-	char dfile[32];
-
-	/* Number of valid MMIO cycles present. */
-	u32 mmio_count;
-
-	/* MMIO address */
-	u32 mmioaddr[DMC_V3_MAX_MMIO_COUNT];
-
-	/* MMIO data */
-	u32 mmiodata[DMC_V3_MAX_MMIO_COUNT];
-} __packed;
-
-struct stepping_info {
-	char stepping;
-	char substepping;
-};
-
-static const struct stepping_info skl_stepping_info[] = {
-	{'A', '0'}, {'B', '0'}, {'C', '0'},
-	{'D', '0'}, {'E', '0'}, {'F', '0'},
-	{'G', '0'}, {'H', '0'}, {'I', '0'},
-	{'J', '0'}, {'K', '0'}
-};
-
-static const struct stepping_info bxt_stepping_info[] = {
-	{'A', '0'}, {'A', '1'}, {'A', '2'},
-	{'B', '0'}, {'B', '1'}, {'B', '2'}
-};
-
-static const struct stepping_info icl_stepping_info[] = {
-	{'A', '0'}, {'A', '1'}, {'A', '2'},
-	{'B', '0'}, {'B', '2'},
-	{'C', '0'}
-};
-
-static const struct stepping_info no_stepping_info = { '*', '*' };
-
-static const struct stepping_info *
-intel_get_stepping_info(struct drm_i915_private *dev_priv)
-{
-	const struct stepping_info *si;
-	unsigned int size;
-
-	if (IS_ICELAKE(dev_priv)) {
-		size = ARRAY_SIZE(icl_stepping_info);
-		si = icl_stepping_info;
-	} else if (IS_SKYLAKE(dev_priv)) {
-		size = ARRAY_SIZE(skl_stepping_info);
-		si = skl_stepping_info;
-	} else if (IS_BROXTON(dev_priv)) {
-		size = ARRAY_SIZE(bxt_stepping_info);
-		si = bxt_stepping_info;
-	} else {
-		size = 0;
-		si = NULL;
-	}
-
-	if (INTEL_REVID(dev_priv) < size)
-		return si + INTEL_REVID(dev_priv);
-
-	return &no_stepping_info;
-}
-
-static void gen9_set_dc_state_debugmask(struct drm_i915_private *dev_priv)
-{
-	u32 val, mask;
-
-	mask = DC_STATE_DEBUG_MASK_MEMORY_UP;
-
-	if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv))
-		mask |= DC_STATE_DEBUG_MASK_CORES;
-
-	/* The below bit doesn't need to be cleared ever afterwards */
-	val = intel_de_read(dev_priv, DC_STATE_DEBUG);
-	if ((val & mask) != mask) {
-		val |= mask;
-		intel_de_write(dev_priv, DC_STATE_DEBUG, val);
-		intel_de_posting_read(dev_priv, DC_STATE_DEBUG);
-	}
-}
-
-/**
- * intel_dmc_load_program() - write the firmware from memory to register.
- * @dev_priv: i915 drm device.
- *
- * DMC firmware is read from a .bin file and kept in internal memory one time.
- * Everytime display comes back from low power state this function is called to
- * copy the firmware from internal memory to registers.
- */
-void intel_dmc_load_program(struct drm_i915_private *dev_priv)
-{
-	u32 *payload = dev_priv->dmc.dmc_payload;
-	u32 i, fw_size;
-
-	if (!HAS_DMC(dev_priv)) {
-		drm_err(&dev_priv->drm,
-			"No DMC support available for this platform\n");
-		return;
-	}
-
-	if (!dev_priv->dmc.dmc_payload) {
-		drm_err(&dev_priv->drm,
-			"Tried to program CSR with empty payload\n");
-		return;
-	}
-
-	fw_size = dev_priv->dmc.dmc_fw_size;
-	assert_rpm_wakelock_held(&dev_priv->runtime_pm);
-
-	preempt_disable();
-
-	for (i = 0; i < fw_size; i++)
-		intel_uncore_write_fw(&dev_priv->uncore, DMC_PROGRAM(i),
-				      payload[i]);
-
-	preempt_enable();
-
-	for (i = 0; i < dev_priv->dmc.mmio_count; i++) {
-		intel_de_write(dev_priv, dev_priv->dmc.mmioaddr[i],
-			       dev_priv->dmc.mmiodata[i]);
-	}
-
-	dev_priv->dmc.dc_state = 0;
-
-	gen9_set_dc_state_debugmask(dev_priv);
-}
-
-/*
- * Search fw_info table for dmc_offset to find firmware binary: num_entries is
- * already sanitized.
- */
-static u32 find_dmc_fw_offset(const struct intel_fw_info *fw_info,
-			      unsigned int num_entries,
-			      const struct stepping_info *si,
-			      u8 package_ver)
-{
-	u32 dmc_offset = DMC_DEFAULT_FW_OFFSET;
-	unsigned int i;
-
-	for (i = 0; i < num_entries; i++) {
-		if (package_ver > 1 && fw_info[i].dmc_id != 0)
-			continue;
-
-		if (fw_info[i].substepping == '*' &&
-		    si->stepping == fw_info[i].stepping) {
-			dmc_offset = fw_info[i].offset;
-			break;
-		}
-
-		if (si->stepping == fw_info[i].stepping &&
-		    si->substepping == fw_info[i].substepping) {
-			dmc_offset = fw_info[i].offset;
-			break;
-		}
-
-		if (fw_info[i].stepping == '*' &&
-		    fw_info[i].substepping == '*') {
-			/*
-			 * In theory we should stop the search as generic
-			 * entries should always come after the more specific
-			 * ones, but let's continue to make sure to work even
-			 * with "broken" firmwares. If we don't find a more
-			 * specific one, then we use this entry
-			 */
-			dmc_offset = fw_info[i].offset;
-		}
-	}
-
-	return dmc_offset;
-}
-
-static u32 parse_dmc_fw_header(struct intel_dmc *dmc,
-			       const struct intel_dmc_header_base *dmc_header,
-			       size_t rem_size)
-{
-	unsigned int header_len_bytes, dmc_header_size, payload_size, i;
-	const u32 *mmioaddr, *mmiodata;
-	u32 mmio_count, mmio_count_max;
-	u8 *payload;
-
-	BUILD_BUG_ON(ARRAY_SIZE(dmc->mmioaddr) < DMC_V3_MAX_MMIO_COUNT ||
-		     ARRAY_SIZE(dmc->mmioaddr) < DMC_V1_MAX_MMIO_COUNT);
-
-	/*
-	 * Check if we can access common fields, we will checkc again below
-	 * after we have read the version
-	 */
-	if (rem_size < sizeof(struct intel_dmc_header_base))
-		goto error_truncated;
-
-	/* Cope with small differences between v1 and v3 */
-	if (dmc_header->header_ver == 3) {
-		const struct intel_dmc_header_v3 *v3 =
-			(const struct intel_dmc_header_v3 *)dmc_header;
-
-		if (rem_size < sizeof(struct intel_dmc_header_v3))
-			goto error_truncated;
-
-		mmioaddr = v3->mmioaddr;
-		mmiodata = v3->mmiodata;
-		mmio_count = v3->mmio_count;
-		mmio_count_max = DMC_V3_MAX_MMIO_COUNT;
-		/* header_len is in dwords */
-		header_len_bytes = dmc_header->header_len * 4;
-		dmc_header_size = sizeof(*v3);
-	} else if (dmc_header->header_ver == 1) {
-		const struct intel_dmc_header_v1 *v1 =
-			(const struct intel_dmc_header_v1 *)dmc_header;
-
-		if (rem_size < sizeof(struct intel_dmc_header_v1))
-			goto error_truncated;
-
-		mmioaddr = v1->mmioaddr;
-		mmiodata = v1->mmiodata;
-		mmio_count = v1->mmio_count;
-		mmio_count_max = DMC_V1_MAX_MMIO_COUNT;
-		header_len_bytes = dmc_header->header_len;
-		dmc_header_size = sizeof(*v1);
-	} else {
-		DRM_ERROR("Unknown DMC fw header version: %u\n",
-			  dmc_header->header_ver);
-		return 0;
-	}
-
-	if (header_len_bytes != dmc_header_size) {
-		DRM_ERROR("DMC firmware has wrong dmc header length "
-			  "(%u bytes)\n", header_len_bytes);
-		return 0;
-	}
-
-	/* Cache the dmc header info. */
-	if (mmio_count > mmio_count_max) {
-		DRM_ERROR("DMC firmware has wrong mmio count %u\n", mmio_count);
-		return 0;
-	}
-
-	for (i = 0; i < mmio_count; i++) {
-		if (mmioaddr[i] < DMC_MMIO_START_RANGE ||
-		    mmioaddr[i] > DMC_MMIO_END_RANGE) {
-			DRM_ERROR("DMC firmware has wrong mmio address 0x%x\n",
-				  mmioaddr[i]);
-			return 0;
-		}
-		dmc->mmioaddr[i] = _MMIO(mmioaddr[i]);
-		dmc->mmiodata[i] = mmiodata[i];
-	}
-	dmc->mmio_count = mmio_count;
-
-	rem_size -= header_len_bytes;
-
-	/* fw_size is in dwords, so multiplied by 4 to convert into bytes. */
-	payload_size = dmc_header->fw_size * 4;
-	if (rem_size < payload_size)
-		goto error_truncated;
-
-	if (payload_size > dmc->max_fw_size) {
-		DRM_ERROR("DMC FW too big (%u bytes)\n", payload_size);
-		return 0;
-	}
-	dmc->dmc_fw_size = dmc_header->fw_size;
-
-	dmc->dmc_payload = kmalloc(payload_size, GFP_KERNEL);
-	if (!dmc->dmc_payload) {
-		DRM_ERROR("Memory allocation failed for dmc payload\n");
-		return 0;
-	}
-
-	payload = (u8 *)(dmc_header) + header_len_bytes;
-	memcpy(dmc->dmc_payload, payload, payload_size);
-
-	return header_len_bytes + payload_size;
-
-error_truncated:
-	DRM_ERROR("Truncated DMC firmware, refusing.\n");
-	return 0;
-}
-
-static u32
-parse_dmc_fw_package(struct intel_dmc *dmc,
-		     const struct intel_package_header *package_header,
-		     const struct stepping_info *si,
-		     size_t rem_size)
-{
-	u32 package_size = sizeof(struct intel_package_header);
-	u32 num_entries, max_entries, dmc_offset;
-	const struct intel_fw_info *fw_info;
-
-	if (rem_size < package_size)
-		goto error_truncated;
-
-	if (package_header->header_ver == 1) {
-		max_entries = PACKAGE_MAX_FW_INFO_ENTRIES;
-	} else if (package_header->header_ver == 2) {
-		max_entries = PACKAGE_V2_MAX_FW_INFO_ENTRIES;
-	} else {
-		DRM_ERROR("DMC firmware has unknown header version %u\n",
-			  package_header->header_ver);
-		return 0;
-	}
-
-	/*
-	 * We should always have space for max_entries,
-	 * even if not all are used
-	 */
-	package_size += max_entries * sizeof(struct intel_fw_info);
-	if (rem_size < package_size)
-		goto error_truncated;
-
-	if (package_header->header_len * 4 != package_size) {
-		DRM_ERROR("DMC firmware has wrong package header length "
-			  "(%u bytes)\n", package_size);
-		return 0;
-	}
-
-	num_entries = package_header->num_entries;
-	if (WARN_ON(package_header->num_entries > max_entries))
-		num_entries = max_entries;
-
-	fw_info = (const struct intel_fw_info *)
-		((u8 *)package_header + sizeof(*package_header));
-	dmc_offset = find_dmc_fw_offset(fw_info, num_entries, si,
-					package_header->header_ver);
-	if (dmc_offset == DMC_DEFAULT_FW_OFFSET) {
-		DRM_ERROR("DMC firmware not supported for %c stepping\n",
-			  si->stepping);
-		return 0;
-	}
-
-	/* dmc_offset is in dwords */
-	return package_size + dmc_offset * 4;
-
-error_truncated:
-	DRM_ERROR("Truncated DMC firmware, refusing.\n");
-	return 0;
-}
-
-/* Return number of bytes parsed or 0 on error */
-static u32 parse_dmc_fw_css(struct intel_dmc *dmc,
-			    struct intel_css_header *css_header,
-			    size_t rem_size)
-{
-	if (rem_size < sizeof(struct intel_css_header)) {
-		DRM_ERROR("Truncated DMC firmware, refusing.\n");
-		return 0;
-	}
-
-	if (sizeof(struct intel_css_header) !=
-	    (css_header->header_len * 4)) {
-		DRM_ERROR("DMC firmware has wrong CSS header length "
-			  "(%u bytes)\n",
-			  (css_header->header_len * 4));
-		return 0;
-	}
-
-	if (dmc->required_version &&
-	    css_header->version != dmc->required_version) {
-		DRM_INFO("Refusing to load DMC firmware v%u.%u,"
-			 " please use v%u.%u\n",
-			 DMC_VERSION_MAJOR(css_header->version),
-			 DMC_VERSION_MINOR(css_header->version),
-			 DMC_VERSION_MAJOR(dmc->required_version),
-			 DMC_VERSION_MINOR(dmc->required_version));
-		return 0;
-	}
-
-	dmc->version = css_header->version;
-
-	return sizeof(struct intel_css_header);
-}
-
-static void parse_dmc_fw(struct drm_i915_private *dev_priv,
-			 const struct firmware *fw)
-{
-	struct intel_css_header *css_header;
-	struct intel_package_header *package_header;
-	struct intel_dmc_header_base *dmc_header;
-	struct intel_dmc *dmc = &dev_priv->dmc;
-	const struct stepping_info *si = intel_get_stepping_info(dev_priv);
-	u32 readcount = 0;
-	u32 r;
-
-	if (!fw)
-		return;
-
-	/* Extract CSS Header information */
-	css_header = (struct intel_css_header *)fw->data;
-	r = parse_dmc_fw_css(dmc, css_header, fw->size);
-	if (!r)
-		return;
-
-	readcount += r;
-
-	/* Extract Package Header information */
-	package_header = (struct intel_package_header *)&fw->data[readcount];
-	r = parse_dmc_fw_package(dmc, package_header, si, fw->size - readcount);
-	if (!r)
-		return;
-
-	readcount += r;
-
-	/* Extract dmc_header information */
-	dmc_header = (struct intel_dmc_header_base *)&fw->data[readcount];
-	parse_dmc_fw_header(dmc, dmc_header, fw->size - readcount);
-}
-
-static void intel_dmc_runtime_pm_get(struct drm_i915_private *dev_priv)
-{
-	drm_WARN_ON(&dev_priv->drm, dev_priv->dmc.wakeref);
-	dev_priv->dmc.wakeref =
-		intel_display_power_get(dev_priv, POWER_DOMAIN_INIT);
-}
-
-static void intel_dmc_runtime_pm_put(struct drm_i915_private *dev_priv)
-{
-	intel_wakeref_t wakeref __maybe_unused =
-		fetch_and_zero(&dev_priv->dmc.wakeref);
-
-	intel_display_power_put(dev_priv, POWER_DOMAIN_INIT, wakeref);
-}
-
-static void dmc_load_work_fn(struct work_struct *work)
-{
-	struct drm_i915_private *dev_priv;
-	struct intel_dmc *dmc;
-	const struct firmware *fw = NULL;
-
-	dev_priv = container_of(work, typeof(*dev_priv), dmc.work);
-	dmc = &dev_priv->dmc;
-
-	request_firmware(&fw, dev_priv->dmc.fw_path, dev_priv->drm.dev);
-	parse_dmc_fw(dev_priv, fw);
-
-	if (dev_priv->dmc.dmc_payload) {
-		intel_dmc_load_program(dev_priv);
-		intel_dmc_runtime_pm_put(dev_priv);
-
-		drm_info(&dev_priv->drm,
-			 "Finished loading DMC firmware %s (v%u.%u)\n",
-			 dev_priv->dmc.fw_path, DMC_VERSION_MAJOR(dmc->version),
-			 DMC_VERSION_MINOR(dmc->version));
-	} else {
-		drm_notice(&dev_priv->drm,
-			   "Failed to load DMC firmware %s."
-			   " Disabling runtime power management.\n",
-			   dmc->fw_path);
-		drm_notice(&dev_priv->drm, "DMC firmware homepage: %s",
-			   INTEL_UC_FIRMWARE_URL);
-	}
-
-	release_firmware(fw);
-}
-
-/**
- * intel_dmc_ucode_init() - initialize the firmware loading.
- * @dev_priv: i915 drm device.
- *
- * This function is called at the time of loading the display driver to read
- * firmware from a .bin file and copied into a internal memory.
- */
-void intel_dmc_ucode_init(struct drm_i915_private *dev_priv)
-{
-	struct intel_dmc *dmc = &dev_priv->dmc;
-
-	INIT_WORK(&dev_priv->dmc.work, dmc_load_work_fn);
-
-	if (!HAS_DMC(dev_priv))
-		return;
-
-	/*
-	 * Obtain a runtime pm reference, until DMC is loaded, to avoid entering
-	 * runtime-suspend.
-	 *
-	 * On error, we return with the rpm wakeref held to prevent runtime
-	 * suspend as runtime suspend *requires* a working DMC for whatever
-	 * reason.
-	 */
-	intel_dmc_runtime_pm_get(dev_priv);
-
-	if (IS_ALDERLAKE_S(dev_priv)) {
-		dmc->fw_path = ADLS_DMC_PATH;
-		dmc->required_version = ADLS_DMC_VERSION_REQUIRED;
-		dmc->max_fw_size = GEN12_DMC_MAX_FW_SIZE;
-	} else if (IS_DG1(dev_priv)) {
-		dmc->fw_path = DG1_DMC_PATH;
-		dmc->required_version = DG1_DMC_VERSION_REQUIRED;
-		dmc->max_fw_size = GEN12_DMC_MAX_FW_SIZE;
-	} else if (IS_ROCKETLAKE(dev_priv)) {
-		dmc->fw_path = RKL_DMC_PATH;
-		dmc->required_version = RKL_DMC_VERSION_REQUIRED;
-		dmc->max_fw_size = GEN12_DMC_MAX_FW_SIZE;
-	} else if (DISPLAY_VER(dev_priv) >= 12) {
-		dmc->fw_path = TGL_DMC_PATH;
-		dmc->required_version = TGL_DMC_VERSION_REQUIRED;
-		dmc->max_fw_size = GEN12_DMC_MAX_FW_SIZE;
-	} else if (DISPLAY_VER(dev_priv) == 11) {
-		dmc->fw_path = ICL_DMC_PATH;
-		dmc->required_version = ICL_DMC_VERSION_REQUIRED;
-		dmc->max_fw_size = ICL_DMC_MAX_FW_SIZE;
-	} else if (IS_CANNONLAKE(dev_priv)) {
-		dmc->fw_path = CNL_DMC_PATH;
-		dmc->required_version = CNL_DMC_VERSION_REQUIRED;
-		dmc->max_fw_size = CNL_DMC_MAX_FW_SIZE;
-	} else if (IS_GEMINILAKE(dev_priv)) {
-		dmc->fw_path = GLK_DMC_PATH;
-		dmc->required_version = GLK_DMC_VERSION_REQUIRED;
-		dmc->max_fw_size = GLK_DMC_MAX_FW_SIZE;
-	} else if (IS_KABYLAKE(dev_priv) ||
-		   IS_COFFEELAKE(dev_priv) ||
-		   IS_COMETLAKE(dev_priv)) {
-		dmc->fw_path = KBL_DMC_PATH;
-		dmc->required_version = KBL_DMC_VERSION_REQUIRED;
-		dmc->max_fw_size = KBL_DMC_MAX_FW_SIZE;
-	} else if (IS_SKYLAKE(dev_priv)) {
-		dmc->fw_path = SKL_DMC_PATH;
-		dmc->required_version = SKL_DMC_VERSION_REQUIRED;
-		dmc->max_fw_size = SKL_DMC_MAX_FW_SIZE;
-	} else if (IS_BROXTON(dev_priv)) {
-		dmc->fw_path = BXT_DMC_PATH;
-		dmc->required_version = BXT_DMC_VERSION_REQUIRED;
-		dmc->max_fw_size = BXT_DMC_MAX_FW_SIZE;
-	}
-
-	if (dev_priv->params.dmc_firmware_path) {
-		if (strlen(dev_priv->params.dmc_firmware_path) == 0) {
-			dmc->fw_path = NULL;
-			drm_info(&dev_priv->drm,
-				 "Disabling DMC firmware and runtime PM\n");
-			return;
-		}
-
-		dmc->fw_path = dev_priv->params.dmc_firmware_path;
-		/* Bypass version check for firmware override. */
-		dmc->required_version = 0;
-	}
-
-	if (!dmc->fw_path) {
-		drm_dbg_kms(&dev_priv->drm,
-			    "No known DMC firmware for platform, disabling runtime PM\n");
-		return;
-	}
-
-	drm_dbg_kms(&dev_priv->drm, "Loading %s\n", dmc->fw_path);
-	schedule_work(&dev_priv->dmc.work);
-}
-
-/**
- * intel_dmc_ucode_suspend() - prepare DMC firmware before system suspend
- * @dev_priv: i915 drm device
- *
- * Prepare the DMC firmware before entering system suspend. This includes
- * flushing pending work items and releasing any resources acquired during
- * init.
- */
-void intel_dmc_ucode_suspend(struct drm_i915_private *dev_priv)
-{
-	if (!HAS_DMC(dev_priv))
-		return;
-
-	flush_work(&dev_priv->dmc.work);
-
-	/* Drop the reference held in case DMC isn't loaded. */
-	if (!dev_priv->dmc.dmc_payload)
-		intel_dmc_runtime_pm_put(dev_priv);
-}
-
-/**
- * intel_dmc_ucode_resume() - init DMC firmware during system resume
- * @dev_priv: i915 drm device
- *
- * Reinitialize the DMC firmware during system resume, reacquiring any
- * resources released in intel_dmc_ucode_suspend().
- */
-void intel_dmc_ucode_resume(struct drm_i915_private *dev_priv)
-{
-	if (!HAS_DMC(dev_priv))
-		return;
-
-	/*
-	 * Reacquire the reference to keep RPM disabled in case DMC isn't
-	 * loaded.
-	 */
-	if (!dev_priv->dmc.dmc_payload)
-		intel_dmc_runtime_pm_get(dev_priv);
-}
-
-/**
- * intel_dmc_ucode_fini() - unload the DMC firmware.
- * @dev_priv: i915 drm device.
- *
- * Firmmware unloading includes freeing the internal memory and reset the
- * firmware loading status.
- */
-void intel_dmc_ucode_fini(struct drm_i915_private *dev_priv)
-{
-	if (!HAS_DMC(dev_priv))
-		return;
-
-	intel_dmc_ucode_suspend(dev_priv);
-	drm_WARN_ON(&dev_priv->drm, dev_priv->dmc.wakeref);
-
-	kfree(dev_priv->dmc.dmc_payload);
-}