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Subject[PATCH] ASoC: intel: clean up CONFIG_SND_SST_IPC handling
Date
In a configuration with SND_SST_ATOM_HIFI2_PLATFORM_PCI=y and
SND_SST_ATOM_HIFI2_PLATFORM=m, we get this module link failure:

ERROR: "sst_context_init" [sound/soc/intel/atom/sst/snd-intel-sst-acpi.ko] undefined!
ERROR: "sst_context_cleanup" [sound/soc/intel/atom/sst/snd-intel-sst-acpi.ko] undefined!
ERROR: "sst_alloc_drv_context" [sound/soc/intel/atom/sst/snd-intel-sst-acpi.ko] undefined!
ERROR: "intel_sst_pm" [sound/soc/intel/atom/sst/snd-intel-sst-acpi.ko] undefined!
ERROR: "sst_configure_runtime_pm" [sound/soc/intel/atom/sst/snd-intel-sst-acpi.ko] undefined!

The problem is that the sound/soc/intel/atom/ directory only gets
entered by Kbuild when SND_SST_ATOM_HIFI2_PLATFORM is set, so we
only build modules (obj-m) under here but not built-in files (obj-y)
including the snd-intel-sst-core that we clearly want need here.

Before commit 4772c16ede52 ("ASoC: Intel: Kconfig: Simplify-clarify ACPI/PCI
dependencies"), this could not happen as all files in sound/soc/intel/atom/
depended on CONFIG_SND_SST_ATOM_HIFI2_PLATFORM anyway.

Slightly later, commit 05f4434bc130 ("ASoC: Intel: remove mfld_machine")
was added, which then removed the Merrifield machine code that happened
to be the only user of SND_SST_ATOM_HIFI2_PLATFORM_PCI. With that gone,
it appears that we can completely remove that symbol as well, along with
the SND_SST_IPC_PCI code and everything associated with it that is now
unused.

For clarify, this also removes the SND_SST_IPC_ACPI symbol that is now
synonymous with SND_SST_IPC, and links both into a single loadable module.

Fixes: 4772c16ede52 ("ASoC: Intel: Kconfig: Simplify-clarify ACPI/PCI dependencies")
Fixes: 05f4434bc130 ("ASoC: Intel: remove mfld_machine")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
I checked that this patch leads to a clean compilation, and that the
code I'm removing is only used for the now-obsolete Merrifield PCI ID.

If I got something else wrong, or you want a different fix, please
just send a replacement patch and treat this as a bug report.
---
sound/soc/intel/Kconfig | 27 +----
sound/soc/intel/atom/sst/Makefile | 6 +-
sound/soc/intel/atom/sst/sst_pci.c | 209 -------------------------------------
sound/soc/intel/common/sst-acpi.c | 4 +-
4 files changed, 5 insertions(+), 241 deletions(-)
delete mode 100644 sound/soc/intel/atom/sst/sst_pci.c

diff --git a/sound/soc/intel/Kconfig b/sound/soc/intel/Kconfig
index f2c9e8c5970a..2dc8cda7a7cd 100644
--- a/sound/soc/intel/Kconfig
+++ b/sound/soc/intel/Kconfig
@@ -17,21 +17,11 @@ if SND_SOC_INTEL_SST_TOPLEVEL
config SND_SST_IPC
tristate
# This option controls the IPC core for HiFi2 platforms
-
-config SND_SST_IPC_PCI
- tristate
- select SND_SST_IPC
- # This option controls the PCI-based IPC for HiFi2 platforms
- # (Medfield, Merrifield).
-
-config SND_SST_IPC_ACPI
- tristate
- select SND_SST_IPC
- # This option controls the ACPI-based IPC for HiFi2 platforms
# (Baytrail, Cherrytrail)

config SND_SOC_INTEL_SST_ACPI
tristate
+ select SND_SST_IPC
# This option controls ACPI-based probing on
# Haswell/Broadwell/Baytrail legacy and will be set
# when these platforms are enabled
@@ -72,23 +62,10 @@ config SND_SOC_INTEL_BAYTRAIL
for Baytrail Chromebooks but this option is now deprecated and is
not recommended, use SND_SST_ATOM_HIFI2_PLATFORM instead.

-config SND_SST_ATOM_HIFI2_PLATFORM_PCI
- tristate "PCI HiFi2 (Medfield, Merrifield) Platforms"
- depends on X86 && PCI
- select SND_SST_IPC_PCI
- select SND_SOC_COMPRESS
- help
- If you have a Intel Medfield or Merrifield/Edison platform, then
- enable this option by saying Y or m. Distros will typically not
- enable this option: Medfield devices are not available to
- developers and while Merrifield/Edison can run a mainline kernel with
- limited functionality it will require a firmware file which
- is not in the standard firmware tree
-
config SND_SST_ATOM_HIFI2_PLATFORM
tristate "ACPI HiFi2 (Baytrail, Cherrytrail) Platforms"
depends on X86 && ACPI
- select SND_SST_IPC_ACPI
+ select SND_SST_IPC
select SND_SOC_COMPRESS
select SND_SOC_ACPI_INTEL_MATCH
select IOSF_MBI
diff --git a/sound/soc/intel/atom/sst/Makefile b/sound/soc/intel/atom/sst/Makefile
index 795d1cf8f386..f5b7008b4cea 100644
--- a/sound/soc/intel/atom/sst/Makefile
+++ b/sound/soc/intel/atom/sst/Makefile
@@ -1,8 +1,4 @@
# SPDX-License-Identifier: GPL-2.0
-snd-intel-sst-core-objs := sst.o sst_ipc.o sst_stream.o sst_drv_interface.o sst_loader.o sst_pvt.o
-snd-intel-sst-pci-objs += sst_pci.o
-snd-intel-sst-acpi-objs += sst_acpi.o
+snd-intel-sst-core-objs := sst.o sst_ipc.o sst_stream.o sst_drv_interface.o sst_loader.o sst_pvt.o sst_acpi.o

obj-$(CONFIG_SND_SST_IPC) += snd-intel-sst-core.o
-obj-$(CONFIG_SND_SST_IPC_PCI) += snd-intel-sst-pci.o
-obj-$(CONFIG_SND_SST_IPC_ACPI) += snd-intel-sst-acpi.o
diff --git a/sound/soc/intel/atom/sst/sst_pci.c b/sound/soc/intel/atom/sst/sst_pci.c
deleted file mode 100644
index 6906ee624cf6..000000000000
--- a/sound/soc/intel/atom/sst/sst_pci.c
+++ /dev/null
@@ -1,209 +0,0 @@
-/*
- * sst_pci.c - SST (LPE) driver init file for pci enumeration.
- *
- * 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.
- *
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- */
-#include <linux/module.h>
-#include <linux/pci.h>
-#include <linux/fs.h>
-#include <linux/firmware.h>
-#include <linux/pm_runtime.h>
-#include <sound/core.h>
-#include <sound/soc.h>
-#include <asm/platform_sst_audio.h>
-#include "../sst-mfld-platform.h"
-#include "sst.h"
-
-static int sst_platform_get_resources(struct intel_sst_drv *ctx)
-{
- int ddr_base, ret = 0;
- struct pci_dev *pci = ctx->pci;
-
- ret = pci_request_regions(pci, SST_DRV_NAME);
- if (ret)
- return ret;
-
- /* map registers */
- /* DDR base */
- if (ctx->dev_id == SST_MRFLD_PCI_ID) {
- ctx->ddr_base = pci_resource_start(pci, 0);
- /* check that the relocated IMR base matches with FW Binary */
- ddr_base = relocate_imr_addr_mrfld(ctx->ddr_base);
- if (!ctx->pdata->lib_info) {
- dev_err(ctx->dev, "lib_info pointer NULL\n");
- ret = -EINVAL;
- goto do_release_regions;
- }
- if (ddr_base != ctx->pdata->lib_info->mod_base) {
- dev_err(ctx->dev,
- "FW LSP DDR BASE does not match with IFWI\n");
- ret = -EINVAL;
- goto do_release_regions;
- }
- ctx->ddr_end = pci_resource_end(pci, 0);
-
- ctx->ddr = pcim_iomap(pci, 0,
- pci_resource_len(pci, 0));
- if (!ctx->ddr) {
- ret = -EINVAL;
- goto do_release_regions;
- }
- dev_dbg(ctx->dev, "sst: DDR Ptr %p\n", ctx->ddr);
- } else {
- ctx->ddr = NULL;
- }
- /* SHIM */
- ctx->shim_phy_add = pci_resource_start(pci, 1);
- ctx->shim = pcim_iomap(pci, 1, pci_resource_len(pci, 1));
- if (!ctx->shim) {
- ret = -EINVAL;
- goto do_release_regions;
- }
- dev_dbg(ctx->dev, "SST Shim Ptr %p\n", ctx->shim);
-
- /* Shared SRAM */
- ctx->mailbox_add = pci_resource_start(pci, 2);
- ctx->mailbox = pcim_iomap(pci, 2, pci_resource_len(pci, 2));
- if (!ctx->mailbox) {
- ret = -EINVAL;
- goto do_release_regions;
- }
- dev_dbg(ctx->dev, "SRAM Ptr %p\n", ctx->mailbox);
-
- /* IRAM */
- ctx->iram_end = pci_resource_end(pci, 3);
- ctx->iram_base = pci_resource_start(pci, 3);
- ctx->iram = pcim_iomap(pci, 3, pci_resource_len(pci, 3));
- if (!ctx->iram) {
- ret = -EINVAL;
- goto do_release_regions;
- }
- dev_dbg(ctx->dev, "IRAM Ptr %p\n", ctx->iram);
-
- /* DRAM */
- ctx->dram_end = pci_resource_end(pci, 4);
- ctx->dram_base = pci_resource_start(pci, 4);
- ctx->dram = pcim_iomap(pci, 4, pci_resource_len(pci, 4));
- if (!ctx->dram) {
- ret = -EINVAL;
- goto do_release_regions;
- }
- dev_dbg(ctx->dev, "DRAM Ptr %p\n", ctx->dram);
-do_release_regions:
- pci_release_regions(pci);
- return 0;
-}
-
-/*
- * intel_sst_probe - PCI probe function
- *
- * @pci: PCI device structure
- * @pci_id: PCI device ID structure
- *
- */
-static int intel_sst_probe(struct pci_dev *pci,
- const struct pci_device_id *pci_id)
-{
- int ret = 0;
- struct intel_sst_drv *sst_drv_ctx;
- struct sst_platform_info *sst_pdata = pci->dev.platform_data;
-
- dev_dbg(&pci->dev, "Probe for DID %x\n", pci->device);
- ret = sst_alloc_drv_context(&sst_drv_ctx, &pci->dev, pci->device);
- if (ret < 0)
- return ret;
-
- sst_drv_ctx->pdata = sst_pdata;
- sst_drv_ctx->irq_num = pci->irq;
- snprintf(sst_drv_ctx->firmware_name, sizeof(sst_drv_ctx->firmware_name),
- "%s%04x%s", "fw_sst_",
- sst_drv_ctx->dev_id, ".bin");
-
- ret = sst_context_init(sst_drv_ctx);
- if (ret < 0)
- return ret;
-
- /* Init the device */
- ret = pcim_enable_device(pci);
- if (ret) {
- dev_err(sst_drv_ctx->dev,
- "device can't be enabled. Returned err: %d\n", ret);
- goto do_free_drv_ctx;
- }
- sst_drv_ctx->pci = pci_dev_get(pci);
- ret = sst_platform_get_resources(sst_drv_ctx);
- if (ret < 0)
- goto do_free_drv_ctx;
-
- pci_set_drvdata(pci, sst_drv_ctx);
- sst_configure_runtime_pm(sst_drv_ctx);
-
- return ret;
-
-do_free_drv_ctx:
- sst_context_cleanup(sst_drv_ctx);
- dev_err(sst_drv_ctx->dev, "Probe failed with %d\n", ret);
- return ret;
-}
-
-/**
- * intel_sst_remove - PCI remove function
- *
- * @pci: PCI device structure
- *
- * This function is called by OS when a device is unloaded
- * This frees the interrupt etc
- */
-static void intel_sst_remove(struct pci_dev *pci)
-{
- struct intel_sst_drv *sst_drv_ctx = pci_get_drvdata(pci);
-
- sst_context_cleanup(sst_drv_ctx);
- pci_dev_put(sst_drv_ctx->pci);
- pci_release_regions(pci);
- pci_set_drvdata(pci, NULL);
-}
-
-/* PCI Routines */
-static const struct pci_device_id intel_sst_ids[] = {
- { PCI_VDEVICE(INTEL, SST_MRFLD_PCI_ID), 0},
- { 0, }
-};
-
-static struct pci_driver sst_driver = {
- .name = SST_DRV_NAME,
- .id_table = intel_sst_ids,
- .probe = intel_sst_probe,
- .remove = intel_sst_remove,
-#ifdef CONFIG_PM
- .driver = {
- .pm = &intel_sst_pm,
- },
-#endif
-};
-
-module_pci_driver(sst_driver);
-
-MODULE_DESCRIPTION("Intel (R) SST(R) Audio Engine PCI Driver");
-MODULE_AUTHOR("Vinod Koul <vinod.koul@intel.com>");
-MODULE_AUTHOR("Harsha Priya <priya.harsha@intel.com>");
-MODULE_AUTHOR("Dharageswari R <dharageswari.r@intel.com>");
-MODULE_AUTHOR("KP Jeeja <jeeja.kp@intel.com>");
-MODULE_LICENSE("GPL v2");
-MODULE_ALIAS("sst");
diff --git a/sound/soc/intel/common/sst-acpi.c b/sound/soc/intel/common/sst-acpi.c
index cf6fbbd4e378..3b669d5adbb6 100644
--- a/sound/soc/intel/common/sst-acpi.c
+++ b/sound/soc/intel/common/sst-acpi.c
@@ -206,7 +206,7 @@ static struct sst_acpi_desc sst_acpi_broadwell_desc = {
.dma_size = SST_LPT_DSP_DMA_SIZE,
};

-#if !IS_ENABLED(CONFIG_SND_SST_IPC_ACPI)
+#if !IS_ENABLED(CONFIG_SND_SST_IPC)
static struct sst_acpi_desc sst_acpi_baytrail_desc = {
.drv_name = "baytrail-pcm-audio",
.machines = snd_soc_acpi_intel_baytrail_legacy_machines,
@@ -222,7 +222,7 @@ static struct sst_acpi_desc sst_acpi_baytrail_desc = {
static const struct acpi_device_id sst_acpi_match[] = {
{ "INT33C8", (unsigned long)&sst_acpi_haswell_desc },
{ "INT3438", (unsigned long)&sst_acpi_broadwell_desc },
-#if !IS_ENABLED(CONFIG_SND_SST_IPC_ACPI)
+#if !IS_ENABLED(CONFIG_SND_SST_IPC)
{ "80860F28", (unsigned long)&sst_acpi_baytrail_desc },
#endif
{ }
--
2.9.0
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