From 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 22 Oct 2024 10:36:11 +0000
Subject: [PATCH] 修改4g拨号为QMI,需要在系统里后台执行quectel-CM
---
kernel/sound/drivers/pcsp/pcsp_lib.c | 30 +++++++++++-------------------
1 files changed, 11 insertions(+), 19 deletions(-)
diff --git a/kernel/sound/drivers/pcsp/pcsp_lib.c b/kernel/sound/drivers/pcsp/pcsp_lib.c
index 8f0f05b..ed40d0f 100644
--- a/kernel/sound/drivers/pcsp/pcsp_lib.c
+++ b/kernel/sound/drivers/pcsp/pcsp_lib.c
@@ -23,10 +23,10 @@
#define DMIX_WANTS_S16 1
/*
- * Call snd_pcm_period_elapsed in a tasklet
+ * Call snd_pcm_period_elapsed in a work
* This avoids spinlock messes and long-running irq contexts
*/
-static void pcsp_call_pcm_elapsed(unsigned long priv)
+static void pcsp_call_pcm_elapsed(struct work_struct *work)
{
if (atomic_read(&pcsp_chip.timer_active)) {
struct snd_pcm_substream *substream;
@@ -36,7 +36,7 @@
}
}
-static DECLARE_TASKLET(pcsp_pcm_tasklet, pcsp_call_pcm_elapsed, 0);
+static DECLARE_WORK(pcsp_pcm_work, pcsp_call_pcm_elapsed);
/* write the port and returns the next expire time in ns;
* called at the trigger-start and in hrtimer callback
@@ -119,11 +119,9 @@
if (periods_elapsed) {
chip->period_ptr += periods_elapsed * period_bytes;
chip->period_ptr %= buffer_bytes;
+ queue_work(system_highpri_wq, &pcsp_pcm_work);
}
spin_unlock_irqrestore(&chip->substream_lock, flags);
-
- if (periods_elapsed)
- tasklet_schedule(&pcsp_pcm_tasklet);
}
enum hrtimer_restart pcsp_do_timer(struct hrtimer *handle)
@@ -196,7 +194,7 @@
pcsp_stop_playing(chip);
local_irq_enable();
hrtimer_cancel(&chip->timer);
- tasklet_kill(&pcsp_pcm_tasklet);
+ cancel_work_sync(&pcsp_pcm_work);
}
static int snd_pcsp_playback_close(struct snd_pcm_substream *substream)
@@ -214,12 +212,7 @@
struct snd_pcm_hw_params *hw_params)
{
struct snd_pcsp *chip = snd_pcm_substream_chip(substream);
- int err;
pcsp_sync_stop(chip);
- err = snd_pcm_lib_malloc_pages(substream,
- params_buffer_bytes(hw_params));
- if (err < 0)
- return err;
return 0;
}
@@ -230,7 +223,7 @@
printk(KERN_INFO "PCSP: hw_free called\n");
#endif
pcsp_sync_stop(chip);
- return snd_pcm_lib_free_pages(substream);
+ return 0;
}
static int snd_pcsp_playback_prepare(struct snd_pcm_substream *substream)
@@ -327,7 +320,6 @@
static const struct snd_pcm_ops snd_pcsp_playback_ops = {
.open = snd_pcsp_playback_open,
.close = snd_pcsp_playback_close,
- .ioctl = snd_pcm_lib_ioctl,
.hw_params = snd_pcsp_playback_hw_params,
.hw_free = snd_pcsp_playback_hw_free,
.prepare = snd_pcsp_playback_prepare,
@@ -350,11 +342,11 @@
chip->pcm->info_flags = SNDRV_PCM_INFO_HALF_DUPLEX;
strcpy(chip->pcm->name, "pcsp");
- snd_pcm_lib_preallocate_pages_for_all(chip->pcm,
- SNDRV_DMA_TYPE_CONTINUOUS,
- snd_dma_continuous_data
- (GFP_KERNEL), PCSP_BUFFER_SIZE,
- PCSP_BUFFER_SIZE);
+ snd_pcm_set_managed_buffer_all(chip->pcm,
+ SNDRV_DMA_TYPE_CONTINUOUS,
+ NULL,
+ PCSP_BUFFER_SIZE,
+ PCSP_BUFFER_SIZE);
return 0;
}
--
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