Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
Merge branch 'for-2.6.34' of git://opensource.wolfsonmicro.com/linux-2.6-asoc into topic/asoc
+30
-10
sound/soc/imx/imx-pcm-fiq.c
+30
-10
sound/soc/imx/imx-pcm-fiq.c
···
35
struct imx_pcm_runtime_data {
36
int period;
37
int periods;
38
-
unsigned long dma_addr;
39
-
int dma;
40
unsigned long offset;
41
unsigned long size;
42
-
unsigned long period_cnt;
43
-
void *buf;
44
struct timer_list timer;
45
-
int period_time;
46
};
47
48
static void imx_ssi_timer_callback(unsigned long data)
49
{
···
53
struct snd_pcm_runtime *runtime = substream->runtime;
54
struct imx_pcm_runtime_data *iprtd = runtime->private_data;
55
struct pt_regs regs;
56
57
get_fiq_regs(®s);
58
···
62
else
63
iprtd->offset = regs.ARM_r9 & 0xffff;
64
65
-
iprtd->timer.expires = jiffies + iprtd->period_time;
66
add_timer(&iprtd->timer);
67
-
snd_pcm_period_elapsed(substream);
68
}
69
70
static struct fiq_handler fh = {
···
95
96
iprtd->size = params_buffer_bytes(params);
97
iprtd->periods = params_periods(params);
98
-
iprtd->period = params_period_bytes(params);
99
iprtd->offset = 0;
100
-
iprtd->period_time = HZ / (params_rate(params) / params_period_size(params));
101
102
snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
103
···
134
case SNDRV_PCM_TRIGGER_START:
135
case SNDRV_PCM_TRIGGER_RESUME:
136
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
137
-
iprtd->timer.expires = jiffies + iprtd->period_time;
138
add_timer(&iprtd->timer);
139
if (++fiq_enable == 1)
140
enable_fiq(imx_pcm_fiq);
···
35
struct imx_pcm_runtime_data {
36
int period;
37
int periods;
38
unsigned long offset;
39
+
unsigned long last_offset;
40
unsigned long size;
41
struct timer_list timer;
42
+
int poll_time;
43
};
44
+
45
+
static inline void imx_ssi_set_next_poll(struct imx_pcm_runtime_data *iprtd)
46
+
{
47
+
iprtd->timer.expires = jiffies + iprtd->poll_time;
48
+
}
49
50
static void imx_ssi_timer_callback(unsigned long data)
51
{
···
51
struct snd_pcm_runtime *runtime = substream->runtime;
52
struct imx_pcm_runtime_data *iprtd = runtime->private_data;
53
struct pt_regs regs;
54
+
unsigned long delta;
55
56
get_fiq_regs(®s);
57
···
59
else
60
iprtd->offset = regs.ARM_r9 & 0xffff;
61
62
+
/* How much data have we transferred since the last period report? */
63
+
if (iprtd->offset >= iprtd->last_offset)
64
+
delta = iprtd->offset - iprtd->last_offset;
65
+
else
66
+
delta = runtime->buffer_size + iprtd->offset
67
+
- iprtd->last_offset;
68
+
69
+
/* If we've transferred at least a period then report it and
70
+
* reset our poll time */
71
+
if (delta >= runtime->period_size) {
72
+
snd_pcm_period_elapsed(substream);
73
+
iprtd->last_offset = iprtd->offset;
74
+
75
+
imx_ssi_set_next_poll(iprtd);
76
+
}
77
+
78
+
/* Restart the timer; if we didn't report we'll run on the next tick */
79
add_timer(&iprtd->timer);
80
+
81
}
82
83
static struct fiq_handler fh = {
···
76
77
iprtd->size = params_buffer_bytes(params);
78
iprtd->periods = params_periods(params);
79
+
iprtd->period = params_period_bytes(params) ;
80
iprtd->offset = 0;
81
+
iprtd->last_offset = 0;
82
+
iprtd->poll_time = HZ / (params_rate(params) / params_period_size(params));
83
84
snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
85
···
114
case SNDRV_PCM_TRIGGER_START:
115
case SNDRV_PCM_TRIGGER_RESUME:
116
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
117
+
imx_ssi_set_next_poll(iprtd);
118
add_timer(&iprtd->timer);
119
if (++fiq_enable == 1)
120
enable_fiq(imx_pcm_fiq);