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| author | Takashi Iwai <tiwai@suse.de> | 2024-03-11 18:18:47 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2024-03-11 18:18:47 +0300 |
| commit | f5d9ddf1214bf878ca69c905c2f410c5b51de99c (patch) | |
| tree | 3ea7bf6f519a490f72cf5f9023b5c0a6dff0fea0 /drivers/hwmon/aspeed-pwm-tacho.c | |
| parent | 6719cd5e45111449f4021e08f2e488f17a9b292b (diff) | |
| parent | 6c023ad32b192dea51a4f842cc6ecf89bb6238c9 (diff) | |
| download | linux-f5d9ddf1214bf878ca69c905c2f410c5b51de99c.tar.xz | |
Merge tag 'asoc-v6.9' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Updates for v6.9
This has been quite a small release, there's a lot of driver specific
cleanups and minor enhancements but hardly anything on the core and only
one new driver. Highlights include:
- SoundWire support for AMD ACP 6.3 systems.
- Support for reporting version information for AVS firmware.
- Support DSPless mode for Intel Soundwire systems.
- Support for configuring CS35L56 amplifiers using EFI calibration
data.
- Log which component is being operated on as part of power management
trace events.
- Support for Microchip SAM9x7, NXP i.MX95 and Qualcomm WCD939x
Diffstat (limited to 'drivers/hwmon/aspeed-pwm-tacho.c')
| -rw-r--r-- | drivers/hwmon/aspeed-pwm-tacho.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/hwmon/aspeed-pwm-tacho.c b/drivers/hwmon/aspeed-pwm-tacho.c index f6e1e55e8292..4acc1858d8ac 100644 --- a/drivers/hwmon/aspeed-pwm-tacho.c +++ b/drivers/hwmon/aspeed-pwm-tacho.c @@ -195,6 +195,8 @@ struct aspeed_pwm_tacho_data { u8 fan_tach_ch_source[MAX_ASPEED_FAN_TACH_CHANNELS]; struct aspeed_cooling_device *cdev[8]; const struct attribute_group *groups[3]; + /* protects access to shared ASPEED_PTCR_RESULT */ + struct mutex tach_lock; }; enum type { TYPEM, TYPEN, TYPEO }; @@ -529,6 +531,8 @@ static int aspeed_get_fan_tach_ch_rpm(struct aspeed_pwm_tacho_data *priv, u8 fan_tach_ch_source, type, mode, both; int ret; + mutex_lock(&priv->tach_lock); + regmap_write(priv->regmap, ASPEED_PTCR_TRIGGER, 0); regmap_write(priv->regmap, ASPEED_PTCR_TRIGGER, 0x1 << fan_tach_ch); @@ -546,6 +550,8 @@ static int aspeed_get_fan_tach_ch_rpm(struct aspeed_pwm_tacho_data *priv, ASPEED_RPM_STATUS_SLEEP_USEC, usec); + mutex_unlock(&priv->tach_lock); + /* return -ETIMEDOUT if we didn't get an answer. */ if (ret) return ret; @@ -915,6 +921,7 @@ static int aspeed_pwm_tacho_probe(struct platform_device *pdev) priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; + mutex_init(&priv->tach_lock); priv->regmap = devm_regmap_init(dev, NULL, (__force void *)regs, &aspeed_pwm_tacho_regmap_config); if (IS_ERR(priv->regmap)) |