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ASoC: intel: Fix sst-dsp dependency on dw stuff

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The recent commit [a92ea59b74: ASoC: Intel: sst: only select
sst-firmware when DW DMAC is built-in] introduced more strict kconfig
dependency (depends on DW_DMAC_CORE=y) for avoiding the build failures
due to dependency messes in intel-sst.  This makes, however, it
impossible to use this driver with the modularized systems,
i.e. typically on Linux distros.

The problem addressed in the commit above is that sst_dsp_new() and
sst_dsp_free() includes the firmware init / finish that call dw_*()
functions.  Thus building it as built-in with DW_DMAC_CORE module
results in the missing symbols.

However, these sst_dsp functions are basically called only from the
drivers that depend on DW_DMAC_CORE already.  That is, once when these
functions are split out, the rest can be independent from dw stuff.

This patch attempts to solve the issue by the following:
- Split sst-dsp stuff into two modules: snd-soc-sst-dsp and
  snd-soc-sst-firmware.
- Move sst_dsp_new() and sst_dsp_free() to the latter module so that
  the former module can be independent from DW_DMAC_CORE.
- Add a new kconfig SND_SOC_INTEL_SST_FIRMWARE to select the latter
  module by machine drivers.

One only remaining pitfall is that each machine driver has to select
SND_SOC_INTEL_SST_FIRMWARE carefully depending on DW_DMAC_CORE.
This can't be done cleanly due to the restriction of the current
kbuild.

Bugzilla: https://bugzilla.opensuse.org/show_bug.cgi?id=988117
Fixes: a92ea59b74 ('ASoC: Intel: sst: only select sst-firmware when DW DMAC is built-in')
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Takashi Iwai 2016-07-11 10:39:11 +02:00 committed by Mark Brown
parent 24dad509ed
commit a395bdd6b2
6 changed files with 85 additions and 78 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
sound/soc/intel/Kconfig
View File

@ -32,6 +32,12 @@ config SND_SOC_INTEL_SST
select SND_SOC_INTEL_SST_MATCH if ACPI
depends on (X86 || COMPILE_TEST)
# firmware stuff depends DW_DMAC_CORE; since there is no depends-on from
# the reverse selection, each machine driver needs to select
# SND_SOC_INTEL_SST_FIRMWARE carefully depending on DW_DMAC_CORE
config SND_SOC_INTEL_SST_FIRMWARE
tristate
config SND_SOC_INTEL_SST_ACPI
tristate
@ -47,8 +53,9 @@ config SND_SOC_INTEL_BAYTRAIL
config SND_SOC_INTEL_HASWELL_MACH
tristate "ASoC Audio DSP support for Intel Haswell Lynxpoint"
depends on X86_INTEL_LPSS && I2C && I2C_DESIGNWARE_PLATFORM
depends on DW_DMAC_CORE=y
depends on DW_DMAC_CORE
select SND_SOC_INTEL_SST
select SND_SOC_INTEL_SST_FIRMWARE
select SND_SOC_INTEL_HASWELL
select SND_SOC_RT5640
help
@ -91,8 +98,9 @@ config SND_SOC_INTEL_BXT_RT298_MACH
config SND_SOC_INTEL_BYT_RT5640_MACH
tristate "ASoC Audio driver for Intel Baytrail with RT5640 codec"
depends on X86_INTEL_LPSS && I2C
depends on DW_DMAC_CORE=y && (SND_SST_IPC_ACPI = n)
depends on DW_DMAC_CORE && (SND_SST_IPC_ACPI = n)
select SND_SOC_INTEL_SST
select SND_SOC_INTEL_SST_FIRMWARE
select SND_SOC_INTEL_BAYTRAIL
select SND_SOC_RT5640
help
@ -103,8 +111,9 @@ config SND_SOC_INTEL_BYT_RT5640_MACH
config SND_SOC_INTEL_BYT_MAX98090_MACH
tristate "ASoC Audio driver for Intel Baytrail with MAX98090 codec"
depends on X86_INTEL_LPSS && I2C
depends on DW_DMAC_CORE=y && (SND_SST_IPC_ACPI = n)
depends on DW_DMAC_CORE && (SND_SST_IPC_ACPI = n)
select SND_SOC_INTEL_SST
select SND_SOC_INTEL_SST_FIRMWARE
select SND_SOC_INTEL_BAYTRAIL
select SND_SOC_MAX98090
help
@ -115,8 +124,9 @@ config SND_SOC_INTEL_BROADWELL_MACH
tristate "ASoC Audio DSP support for Intel Broadwell Wildcatpoint"
depends on X86_INTEL_LPSS && I2C && DW_DMAC && \
I2C_DESIGNWARE_PLATFORM
depends on DW_DMAC_CORE=y
depends on DW_DMAC_CORE
select SND_SOC_INTEL_SST
select SND_SOC_INTEL_SST_FIRMWARE
select SND_SOC_INTEL_HASWELL
select SND_SOC_RT286
help

4
sound/soc/intel/common/Makefile
View File

@ -2,9 +2,9 @@ snd-soc-sst-dsp-objs := sst-dsp.o
snd-soc-sst-acpi-objs := sst-acpi.o
snd-soc-sst-match-objs := sst-match-acpi.o
snd-soc-sst-ipc-objs := sst-ipc.o
snd-soc-sst-dsp-$(CONFIG_DW_DMAC_CORE) += sst-firmware.o
snd-soc-sst-firmware-objs := sst-firmware.o
obj-$(CONFIG_SND_SOC_INTEL_SST) += snd-soc-sst-dsp.o snd-soc-sst-ipc.o
obj-$(CONFIG_SND_SOC_INTEL_SST_ACPI) += snd-soc-sst-acpi.o
obj-$(CONFIG_SND_SOC_INTEL_SST_MATCH) += snd-soc-sst-match.o
obj-$(CONFIG_SND_SOC_INTEL_SST_FIRMWARE) += snd-soc-sst-firmware.o

4
sound/soc/intel/common/sst-dsp-priv.h
View File

@ -383,10 +383,6 @@ struct sst_mem_block *sst_mem_block_register(struct sst_dsp *dsp, u32 offset,
u32 index, void *private);
void sst_mem_block_unregister_all(struct sst_dsp *dsp);
/* Create/Free DMA resources */
int sst_dma_new(struct sst_dsp *sst);
void sst_dma_free(struct sst_dma *dma);
u32 sst_dsp_get_offset(struct sst_dsp *dsp, u32 offset,
enum sst_mem_type type);
#endif

67
sound/soc/intel/common/sst-dsp.c
View File

@ -420,73 +420,6 @@ void sst_dsp_inbox_read(struct sst_dsp *sst, void *message, size_t bytes)
}
EXPORT_SYMBOL_GPL(sst_dsp_inbox_read);
#ifdef CONFIG_DW_DMAC_CORE
struct sst_dsp *sst_dsp_new(struct device *dev,
struct sst_dsp_device *sst_dev, struct sst_pdata *pdata)
{
struct sst_dsp *sst;
int err;
dev_dbg(dev, "initialising audio DSP id 0x%x\n", pdata->id);
sst = devm_kzalloc(dev, sizeof(*sst), GFP_KERNEL);
if (sst == NULL)
return NULL;
spin_lock_init(&sst->spinlock);
mutex_init(&sst->mutex);
sst->dev = dev;
sst->dma_dev = pdata->dma_dev;
sst->thread_context = sst_dev->thread_context;
sst->sst_dev = sst_dev;
sst->id = pdata->id;
sst->irq = pdata->irq;
sst->ops = sst_dev->ops;
sst->pdata = pdata;
INIT_LIST_HEAD(&sst->used_block_list);
INIT_LIST_HEAD(&sst->free_block_list);
INIT_LIST_HEAD(&sst->module_list);
INIT_LIST_HEAD(&sst->fw_list);
INIT_LIST_HEAD(&sst->scratch_block_list);
/* Initialise SST Audio DSP */
if (sst->ops->init) {
err = sst->ops->init(sst, pdata);
if (err < 0)
return NULL;
}
/* Register the ISR */
err = request_threaded_irq(sst->irq, sst->ops->irq_handler,
sst_dev->thread, IRQF_SHARED, "AudioDSP", sst);
if (err)
goto irq_err;
err = sst_dma_new(sst);
if (err)
dev_warn(dev, "sst_dma_new failed %d\n", err);
return sst;
irq_err:
if (sst->ops->free)
sst->ops->free(sst);
return NULL;
}
EXPORT_SYMBOL_GPL(sst_dsp_new);
void sst_dsp_free(struct sst_dsp *sst)
{
free_irq(sst->irq, sst);
if (sst->ops->free)
sst->ops->free(sst);
sst_dma_free(sst->dma);
}
EXPORT_SYMBOL_GPL(sst_dsp_free);
#endif
/* Module information */
MODULE_AUTHOR("Liam Girdwood");
MODULE_DESCRIPTION("Intel SST Core");

2
sound/soc/intel/common/sst-dsp.h
View File

@ -216,7 +216,7 @@ struct sst_pdata {
void *dsp;
};
#ifdef CONFIG_DW_DMAC_CORE
#if IS_ENABLED(CONFIG_DW_DMAC_CORE)
/* Initialization */
struct sst_dsp *sst_dsp_new(struct device *dev,
struct sst_dsp_device *sst_dev, struct sst_pdata *pdata);

68
sound/soc/intel/common/sst-firmware.c
View File

@ -1211,3 +1211,71 @@ u32 sst_dsp_get_offset(struct sst_dsp *dsp, u32 offset,
}
}
EXPORT_SYMBOL_GPL(sst_dsp_get_offset);
struct sst_dsp *sst_dsp_new(struct device *dev,
struct sst_dsp_device *sst_dev, struct sst_pdata *pdata)
{
struct sst_dsp *sst;
int err;
dev_dbg(dev, "initialising audio DSP id 0x%x\n", pdata->id);
sst = devm_kzalloc(dev, sizeof(*sst), GFP_KERNEL);
if (sst == NULL)
return NULL;
spin_lock_init(&sst->spinlock);
mutex_init(&sst->mutex);
sst->dev = dev;
sst->dma_dev = pdata->dma_dev;
sst->thread_context = sst_dev->thread_context;
sst->sst_dev = sst_dev;
sst->id = pdata->id;
sst->irq = pdata->irq;
sst->ops = sst_dev->ops;
sst->pdata = pdata;
INIT_LIST_HEAD(&sst->used_block_list);
INIT_LIST_HEAD(&sst->free_block_list);
INIT_LIST_HEAD(&sst->module_list);
INIT_LIST_HEAD(&sst->fw_list);
INIT_LIST_HEAD(&sst->scratch_block_list);
/* Initialise SST Audio DSP */
if (sst->ops->init) {
err = sst->ops->init(sst, pdata);
if (err < 0)
return NULL;
}
/* Register the ISR */
err = request_threaded_irq(sst->irq, sst->ops->irq_handler,
sst_dev->thread, IRQF_SHARED, "AudioDSP", sst);
if (err)
goto irq_err;
err = sst_dma_new(sst);
if (err)
dev_warn(dev, "sst_dma_new failed %d\n", err);
return sst;
irq_err:
if (sst->ops->free)
sst->ops->free(sst);
return NULL;
}
EXPORT_SYMBOL_GPL(sst_dsp_new);
void sst_dsp_free(struct sst_dsp *sst)
{
free_irq(sst->irq, sst);
if (sst->ops->free)
sst->ops->free(sst);
sst_dma_free(sst->dma);
}
EXPORT_SYMBOL_GPL(sst_dsp_free);
MODULE_DESCRIPTION("Intel SST Firmware Loader");
MODULE_LICENSE("GPL v2");