soc/fsl/imx-pcm-fiq.c

46 	struct imx_pcm_runtime_data *iprtd =
48 	struct snd_pcm_substream *substream = iprtd->substream;
51 	if (!atomic_read(&iprtd->playing) && !atomic_read(&iprtd->capturing))
57 		iprtd->offset = regs.ARM_r8 & 0xffff;
59 		iprtd->offset = regs.ARM_r9 & 0xffff;
63 	hrtimer_forward_now(hrt, ns_to_ktime(iprtd->poll_time_ns));
77 	struct imx_pcm_runtime_data *iprtd = runtime->private_data;
79 	iprtd->periods = params_periods(params);
80 	iprtd->period = params_period_bytes(params);
81 	iprtd->offset = 0;
82 	iprtd->poll_time_ns = 1000000000 / params_rate(params) *
92 	struct imx_pcm_runtime_data *iprtd = runtime->private_data;
97 		regs.ARM_r8 = (iprtd->period * iprtd->periods - 1) << 16;
99 		regs.ARM_r9 = (iprtd->period * iprtd->periods - 1) << 16;
112 	struct imx_pcm_runtime_data *iprtd = runtime->private_data;
119 			atomic_set(&iprtd->playing, 1);
121 			atomic_set(&iprtd->capturing, 1);
122 		hrtimer_start(&iprtd->hrt, ns_to_ktime(iprtd->poll_time_ns),
131 			atomic_set(&iprtd->playing, 0);
133 			atomic_set(&iprtd->capturing, 0);
134 		if (!atomic_read(&iprtd->playing) &&
135 				!atomic_read(&iprtd->capturing))
151 	struct imx_pcm_runtime_data *iprtd = runtime->private_data;
153 	return bytes_to_frames(substream->runtime, iprtd->offset);
176 	struct imx_pcm_runtime_data *iprtd;
179 	iprtd = kzalloc(sizeof(*iprtd), GFP_KERNEL);
180 	if (iprtd == NULL)
182 	runtime->private_data = iprtd;
184 	iprtd->substream = substream;
186 	atomic_set(&iprtd->playing, 0);
187 	atomic_set(&iprtd->capturing, 0);
188 	hrtimer_init(&iprtd->hrt, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
189 	iprtd->hrt.function = snd_hrtimer_callback;
194 		kfree(iprtd);
206 	struct imx_pcm_runtime_data *iprtd = runtime->private_data;
208 	hrtimer_cancel(&iprtd->hrt);
210 	kfree(iprtd);