43 static u64 pcsp_timer_update(struct snd_pcsp *chip)  in pcsp_timer_update()  argument
51 	if (chip->thalf) {  in pcsp_timer_update()
52 		outb(chip->val61, 0x61);  in pcsp_timer_update()
53 		chip->thalf = 0;  in pcsp_timer_update()
54 		return chip->ns_rem;  in pcsp_timer_update()
57 	substream = chip->playback_substream;  in pcsp_timer_update()
63 	val = runtime->dma_area[chip->playback_ptr + chip->fmt_size - 1];  in pcsp_timer_update()
64 	if (chip->is_signed)  in pcsp_timer_update()
68 	if (timer_cnt && chip->enable) {  in pcsp_timer_update()
71 			outb_p(chip->val61, 0x61);  in pcsp_timer_update()
73 			outb(chip->val61 ^ 1, 0x61);  in pcsp_timer_update()
75 			outb(chip->val61 ^ 2, 0x61);  in pcsp_timer_update()
76 			chip->thalf = 1;  in pcsp_timer_update()
81 	chip->ns_rem = PCSP_PERIOD_NS();  in pcsp_timer_update()
82 	ns = (chip->thalf ? PCSP_CALC_NS(timer_cnt) : chip->ns_rem);  in pcsp_timer_update()
83 	chip->ns_rem -= ns;  in pcsp_timer_update()
87 static void pcsp_pointer_update(struct snd_pcsp *chip)  in pcsp_pointer_update()  argument
95 	substream = chip->playback_substream;  in pcsp_pointer_update()
102 	spin_lock_irqsave(&chip->substream_lock, flags);  in pcsp_pointer_update()
103 	chip->playback_ptr += PCSP_INDEX_INC() * chip->fmt_size;  in pcsp_pointer_update()
104 	periods_elapsed = chip->playback_ptr - chip->period_ptr;  in pcsp_pointer_update()
109 			chip->playback_ptr, period_bytes, buffer_bytes);  in pcsp_pointer_update()
116 	chip->playback_ptr %= buffer_bytes;  in pcsp_pointer_update()
119 		chip->period_ptr += periods_elapsed * period_bytes;  in pcsp_pointer_update()
120 		chip->period_ptr %= buffer_bytes;  in pcsp_pointer_update()
122 	spin_unlock_irqrestore(&chip->substream_lock, flags);  in pcsp_pointer_update()
130 	struct snd_pcsp *chip = container_of(handle, struct snd_pcsp, timer);  in pcsp_do_timer()  local
134 	if (!atomic_read(&chip->timer_active) || !chip->playback_substream)  in pcsp_do_timer()
137 	pointer_update = !chip->thalf;  in pcsp_do_timer()
138 	ns = pcsp_timer_update(chip);  in pcsp_do_timer()
145 		pcsp_pointer_update(chip);  in pcsp_do_timer()
152 static int pcsp_start_playing(struct snd_pcsp *chip)  in pcsp_start_playing()  argument
157 	if (atomic_read(&chip->timer_active)) {  in pcsp_start_playing()
163 	chip->val61 = inb(0x61) | 0x03;  in pcsp_start_playing()
166 	atomic_set(&chip->timer_active, 1);  in pcsp_start_playing()
167 	chip->thalf = 0;  in pcsp_start_playing()
173 static void pcsp_stop_playing(struct snd_pcsp *chip)  in pcsp_stop_playing()  argument
178 	if (!atomic_read(&chip->timer_active))  in pcsp_stop_playing()
181 	atomic_set(&chip->timer_active, 0);  in pcsp_stop_playing()
185 	outb(chip->val61 & 0xFC, 0x61);  in pcsp_stop_playing()
192 void pcsp_sync_stop(struct snd_pcsp *chip)  in pcsp_sync_stop()  argument
195 	pcsp_stop_playing(chip);  in pcsp_sync_stop()
197 	hrtimer_cancel(&chip->timer);  in pcsp_sync_stop()
203 	struct snd_pcsp *chip = snd_pcm_substream_chip(substream);  in snd_pcsp_playback_close()  local
207 	pcsp_sync_stop(chip);  in snd_pcsp_playback_close()
208 	chip->playback_substream = NULL;  in snd_pcsp_playback_close()
215 	struct snd_pcsp *chip = snd_pcm_substream_chip(substream);  in snd_pcsp_playback_hw_params()  local
217 	pcsp_sync_stop(chip);  in snd_pcsp_playback_hw_params()
227 	struct snd_pcsp *chip = snd_pcm_substream_chip(substream);  in snd_pcsp_playback_hw_free()  local
231 	pcsp_sync_stop(chip);  in snd_pcsp_playback_hw_free()
237 	struct snd_pcsp *chip = snd_pcm_substream_chip(substream);  in snd_pcsp_playback_prepare()  local
238 	pcsp_sync_stop(chip);  in snd_pcsp_playback_prepare()
239 	chip->playback_ptr = 0;  in snd_pcsp_playback_prepare()
240 	chip->period_ptr = 0;  in snd_pcsp_playback_prepare()
241 	chip->fmt_size =  in snd_pcsp_playback_prepare()
243 	chip->is_signed = snd_pcm_format_signed(substream->runtime->format);  in snd_pcsp_playback_prepare()
252 			chip->fmt_size);  in snd_pcsp_playback_prepare()
259 	struct snd_pcsp *chip = snd_pcm_substream_chip(substream);  in snd_pcsp_trigger()  local
266 		return pcsp_start_playing(chip);  in snd_pcsp_trigger()
269 		pcsp_stop_playing(chip);  in snd_pcsp_trigger()
280 	struct snd_pcsp *chip = snd_pcm_substream_chip(substream);  in snd_pcsp_playback_pointer()  local
282 	spin_lock(&chip->substream_lock);  in snd_pcsp_playback_pointer()
283 	pos = chip->playback_ptr;  in snd_pcsp_playback_pointer()
284 	spin_unlock(&chip->substream_lock);  in snd_pcsp_playback_pointer()
312 	struct snd_pcsp *chip = snd_pcm_substream_chip(substream);  in snd_pcsp_playback_open()  local
317 	if (atomic_read(&chip->timer_active)) {  in snd_pcsp_playback_open()
322 	chip->playback_substream = substream;  in snd_pcsp_playback_open()
337 int snd_pcsp_new_pcm(struct snd_pcsp *chip)  in snd_pcsp_new_pcm()  argument
341 	err = snd_pcm_new(chip->card, "pcspeaker", 0, 1, 0, &chip->pcm);  in snd_pcsp_new_pcm()
345 	snd_pcm_set_ops(chip->pcm, SNDRV_PCM_STREAM_PLAYBACK,  in snd_pcsp_new_pcm()
348 	chip->pcm->private_data = chip;  in snd_pcsp_new_pcm()
349 	chip->pcm->info_flags = SNDRV_PCM_INFO_HALF_DUPLEX;  in snd_pcsp_new_pcm()
350 	strcpy(chip->pcm->name, "pcsp");  in snd_pcsp_new_pcm()
352 	snd_pcm_lib_preallocate_pages_for_all(chip->pcm,  in snd_pcsp_new_pcm()