git
/
linux
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

ALSA: emu10k1: Use guard() for emu1010 FPGA locking 

The snd_emu1010_fpga_lock() and _unlock() call pairs can be simplified
gracefully with the introduction of guard().

Only code refactoring, and no functional changes.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20250829144342.4290-28-tiwai@suse.de
This commit is contained in:
Takashi Iwai 2025-08-29 16:43:02 +02:00
parent f44f745f75
commit 7c4a379e06
5 changed files with 15 additions and 29 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
include/sound/emu10k1.h
View File

@ -1842,8 +1842,7 @@ unsigned int snd_emu10k1_ptr20_read(struct snd_emu10k1 * emu, unsigned int reg,
void snd_emu10k1_ptr20_write(struct snd_emu10k1 *emu, unsigned int reg, unsigned int chn, unsigned int data);
int snd_emu10k1_spi_write(struct snd_emu10k1 * emu, unsigned int data);
int snd_emu10k1_i2c_write(struct snd_emu10k1 *emu, u32 reg, u32 value);
static inline void snd_emu1010_fpga_lock(struct snd_emu10k1 *emu) { mutex_lock(&emu->emu1010.lock); };
static inline void snd_emu1010_fpga_unlock(struct snd_emu10k1 *emu) { mutex_unlock(&emu->emu1010.lock); };
DEFINE_GUARD(snd_emu1010_fpga_lock, struct snd_emu10k1 *, mutex_lock(&(_T)->emu1010.lock), mutex_unlock(&(_T)->emu1010.lock))
void snd_emu1010_fpga_write_lock(struct snd_emu10k1 *emu, u32 reg, u32 value);
void snd_emu1010_fpga_write(struct snd_emu10k1 *emu, u32 reg, u32 value);
void snd_emu1010_fpga_read(struct snd_emu10k1 *emu, u32 reg, u32 *value);

15
sound/pci/emu10k1/emu10k1_main.c
View File

@ -768,7 +768,7 @@ static void emu1010_work(struct work_struct *work)
return;
#endif
snd_emu1010_fpga_lock(emu);
guard(snd_emu1010_fpga_lock)(emu);
snd_emu1010_fpga_read(emu, EMU_HANA_IRQ_STATUS, &sts);
@ -779,8 +779,6 @@ static void emu1010_work(struct work_struct *work)
if (sts & EMU_HANA_IRQ_WCLK_CHANGED)
emu1010_clock_event(emu);
snd_emu1010_fpga_unlock(emu);
}
static void emu1010_interrupt(struct snd_emu10k1 *emu)
@ -814,13 +812,13 @@ static int snd_emu10k1_emu1010_init(struct snd_emu10k1 *emu)
* Proper init follows in snd_emu10k1_init(). */
outl(HCFG_LOCKSOUNDCACHE | HCFG_LOCKTANKCACHE_MASK, emu->port + HCFG);
snd_emu1010_fpga_lock(emu);
guard(snd_emu1010_fpga_lock)(emu);
dev_info(emu->card->dev, "emu1010: Loading Hana Firmware\n");
err = snd_emu1010_load_firmware(emu, 0, &emu->firmware);
if (err < 0) {
dev_info(emu->card->dev, "emu1010: Loading Firmware failed\n");
goto fail;
return err;
}
/* ID, should read & 0x7f = 0x55 when FPGA programmed. */
@ -830,8 +828,7 @@ static int snd_emu10k1_emu1010_init(struct snd_emu10k1 *emu)
dev_info(emu->card->dev,
"emu1010: Loading Hana Firmware file failed, reg = 0x%x\n",
reg);
err = -ENODEV;
goto fail;
return -ENODEV;
}
dev_info(emu->card->dev, "emu1010: Hana Firmware loaded\n");
@ -891,9 +888,7 @@ static int snd_emu10k1_emu1010_init(struct snd_emu10k1 *emu)
// so it is safe to simply enable the outputs.
snd_emu1010_fpga_write(emu, EMU_HANA_UNMUTE, EMU_UNMUTE);
fail:
snd_emu1010_fpga_unlock(emu);
return err;
return 0;
}
/*
* Create the EMU10K1 instance

15
sound/pci/emu10k1/emumixer.c
View File

@ -662,9 +662,8 @@ static int snd_emu1010_output_source_put(struct snd_kcontrol *kcontrol,
change = (emu->emu1010.output_source[channel] != val);
if (change) {
emu->emu1010.output_source[channel] = val;
snd_emu1010_fpga_lock(emu);
guard(snd_emu1010_fpga_lock)(emu);
snd_emu1010_output_source_apply(emu, channel, val);
snd_emu1010_fpga_unlock(emu);
}
return change;
}
@ -708,9 +707,8 @@ static int snd_emu1010_input_source_put(struct snd_kcontrol *kcontrol,
change = (emu->emu1010.input_source[channel] != val);
if (change) {
emu->emu1010.input_source[channel] = val;
snd_emu1010_fpga_lock(emu);
guard(snd_emu1010_fpga_lock)(emu);
snd_emu1010_input_source_apply(emu, channel, val);
snd_emu1010_fpga_unlock(emu);
}
return change;
}
@ -985,7 +983,7 @@ static int snd_emu1010_clock_source_put(struct snd_kcontrol *kcontrol,
val = ucontrol->value.enumerated.item[0] ;
if (val >= emu_ci->num)
return -EINVAL;
snd_emu1010_fpga_lock(emu);
guard(snd_emu1010_fpga_lock)(emu);
spin_lock_irq(&emu->reg_lock);
change = (emu->emu1010.clock_source != val);
if (change) {
@ -1002,7 +1000,6 @@ static int snd_emu1010_clock_source_put(struct snd_kcontrol *kcontrol,
} else {
spin_unlock_irq(&emu->reg_lock);
}
snd_emu1010_fpga_unlock(emu);
return change;
}
@ -2330,9 +2327,9 @@ int snd_emu10k1_mixer(struct snd_emu10k1 *emu,
for (i = 0; i < emu_ri->n_outs; i++)
emu->emu1010.output_source[i] =
emu1010_map_source(emu_ri, emu_ri->out_dflts[i]);
snd_emu1010_fpga_lock(emu);
snd_emu1010_apply_sources(emu);
snd_emu1010_fpga_unlock(emu);
scoped_guard(snd_emu1010_fpga_lock, emu) {
snd_emu1010_apply_sources(emu);
}
kctl = emu->ctl_clock_source = snd_ctl_new1(&snd_emu1010_clock_source, emu);
err = snd_ctl_add(card, kctl);

8
sound/pci/emu10k1/emuproc.c
View File

@ -166,7 +166,7 @@ static void snd_emu10k1_proc_spdif_read(struct snd_info_entry *entry,
u32 value2;
if (emu->card_capabilities->emu_model) {
snd_emu1010_fpga_lock(emu);
guard(snd_emu1010_fpga_lock)(emu);
// This represents the S/PDIF lock status on 0404b, which is
// kinda weird and unhelpful, because monitoring it via IRQ is
@ -200,8 +200,6 @@ static void snd_emu10k1_proc_spdif_read(struct snd_info_entry *entry,
snd_iprintf(buffer, "\nS/PDIF mode: %s%s\n",
value & EMU_HANA_SPDIF_MODE_RX_PRO ? "professional" : "consumer",
value & EMU_HANA_SPDIF_MODE_RX_NOCOPY ? ", no copy" : "");
snd_emu1010_fpga_unlock(emu);
} else {
snd_emu10k1_proc_spdif_status(emu, buffer, "CD-ROM S/PDIF In", CDCS, CDSRCS);
snd_emu10k1_proc_spdif_status(emu, buffer, "Optical or Coax S/PDIF In", GPSCS, GPSRCS);
@ -464,7 +462,7 @@ static void snd_emu_proc_emu1010_reg_read(struct snd_info_entry *entry,
u32 value;
int i;
snd_emu1010_fpga_lock(emu);
guard(snd_emu1010_fpga_lock)(emu);
snd_iprintf(buffer, "EMU1010 Registers:\n\n");
@ -504,8 +502,6 @@ static void snd_emu_proc_emu1010_reg_read(struct snd_info_entry *entry,
snd_emu_proc_emu1010_link_read(emu, buffer, 0x701);
}
}
snd_emu1010_fpga_unlock(emu);
}
static void snd_emu_proc_io_reg_read(struct snd_info_entry *entry,

3
sound/pci/emu10k1/io.c
View File

@ -297,9 +297,8 @@ void snd_emu1010_fpga_write(struct snd_emu10k1 *emu, u32 reg, u32 value)
void snd_emu1010_fpga_write_lock(struct snd_emu10k1 *emu, u32 reg, u32 value)
{
snd_emu1010_fpga_lock(emu);
guard(snd_emu1010_fpga_lock)(emu);
snd_emu1010_fpga_write_locked(emu, reg, value);
snd_emu1010_fpga_unlock(emu);
}
void snd_emu1010_fpga_read(struct snd_emu10k1 *emu, u32 reg, u32 *value)