Lines Matching +full:disable +full:- +full:wp
1 // SPDX-License-Identifier: GPL-2.0-only
3 * HD-audio controller helpers
19 for (timeout = 1000; timeout > 0; timeout--) {
25 dev_err(bus->dev, "CORB reset timeout#1, CORBRP = %d\n",
29 for (timeout = 1000; timeout > 0; timeout--) {
35 dev_err(bus->dev, "CORB reset timeout#2, CORBRP = %d\n",
40 * snd_hdac_bus_init_cmd_io - set up CORB/RIRB buffers
41 * @bus: HD-audio core bus
45 WARN_ON_ONCE(!bus->rb.area);
47 guard(spinlock_irq)(&bus->reg_lock);
49 bus->corb.addr = bus->rb.addr;
50 bus->corb.buf = (__le32 *)bus->rb.area;
51 snd_hdac_chip_writel(bus, CORBLBASE, (u32)bus->corb.addr);
52 snd_hdac_chip_writel(bus, CORBUBASE, upper_32_bits(bus->corb.addr));
61 if (!bus->corbrp_self_clear)
65 if (!bus->use_pio_for_commands)
69 bus->rirb.addr = bus->rb.addr + 2048;
70 bus->rirb.buf = (__le32 *)(bus->rb.area + 2048);
71 bus->rirb.wp = bus->rirb.rp = 0;
72 memset(bus->rirb.cmds, 0, sizeof(bus->rirb.cmds));
73 snd_hdac_chip_writel(bus, RIRBLBASE, (u32)bus->rirb.addr);
74 snd_hdac_chip_writel(bus, RIRBUBASE, upper_32_bits(bus->rirb.addr));
83 if (bus->not_use_interrupts)
109 * snd_hdac_bus_stop_cmd_io - clean up CORB/RIRB buffers
110 * @bus: HD-audio core bus
114 scoped_guard(spinlock_irq, &bus->reg_lock) {
115 /* disable ringbuffer DMAs */
122 guard(spinlock_irq)(&bus->reg_lock);
123 /* disable unsolicited responses */
143 while (timeout--) {
147 bus->rirb.res[addr] = snd_hdac_chip_readl(bus, IR);
153 dev_dbg_ratelimited(bus->dev, "get_response_pio timeout: IRS=%#x\n",
156 bus->rirb.res[addr] = -1;
158 return -EIO;
162 * snd_hdac_bus_send_cmd_pio - send a command verb via Immediate Command
163 * @bus: HD-audio core bus
173 guard(spinlock_irq)(&bus->reg_lock);
175 while (timeout--) {
189 dev_dbg_ratelimited(bus->dev, "send_cmd_pio timeout: IRS=%#x, val=%#x\n",
192 return -EIO;
196 * snd_hdac_bus_get_response_pio - receive a response via Immediate Response
197 * @bus: HD-audio core bus
207 *res = bus->rirb.res[addr];
213 * snd_hdac_bus_send_cmd_corb - send a command verb via CORB
214 * @bus: HD-audio core bus
222 unsigned int wp, rp;
224 guard(spinlock_irq)(&bus->reg_lock);
226 bus->last_cmd[azx_command_addr(val)] = val;
229 wp = snd_hdac_chip_readw(bus, CORBWP);
230 if (wp == 0xffff) {
232 return -EIO;
234 wp++;
235 wp %= AZX_MAX_CORB_ENTRIES;
238 if (wp == rp) {
240 return -EAGAIN;
243 bus->rirb.cmds[addr]++;
244 bus->corb.buf[wp] = cpu_to_le32(val);
245 snd_hdac_chip_writew(bus, CORBWP, wp);
253 * snd_hdac_bus_update_rirb - retrieve RIRB entries
254 * @bus: HD-audio core bus
257 * The caller needs bus->reg_lock spinlock before calling this.
261 unsigned int rp, wp;
265 wp = snd_hdac_chip_readw(bus, RIRBWP);
266 if (wp == 0xffff) {
271 if (wp == bus->rirb.wp)
273 bus->rirb.wp = wp;
275 while (bus->rirb.rp != wp) {
276 bus->rirb.rp++;
277 bus->rirb.rp %= AZX_MAX_RIRB_ENTRIES;
279 rp = bus->rirb.rp << 1; /* an RIRB entry is 8-bytes */
280 res_ex = le32_to_cpu(bus->rirb.buf[rp + 1]);
281 res = le32_to_cpu(bus->rirb.buf[rp]);
284 dev_err(bus->dev,
285 "spurious response %#x:%#x, rp = %d, wp = %d",
286 res, res_ex, bus->rirb.rp, wp);
290 else if (bus->rirb.cmds[addr]) {
291 bus->rirb.res[addr] = res;
292 bus->rirb.cmds[addr]--;
293 if (!bus->rirb.cmds[addr] &&
294 waitqueue_active(&bus->rirb_wq))
295 wake_up(&bus->rirb_wq);
297 dev_err_ratelimited(bus->dev,
299 res, res_ex, bus->last_cmd[addr]);
306 * snd_hdac_bus_get_response_rirb - receive a response via RIRB
307 * @bus: HD-audio core bus
325 scoped_guard(spinlock_irq, &bus->reg_lock) {
326 if (!bus->polling_mode)
327 prepare_to_wait(&bus->rirb_wq, &wait,
329 if (bus->polling_mode)
331 if (!bus->rirb.cmds[addr]) {
333 *res = bus->rirb.res[addr]; /* the last value */
334 if (!bus->polling_mode)
335 finish_wait(&bus->rirb_wq, &wait);
342 if (!bus->polling_mode) {
344 } else if (bus->needs_damn_long_delay ||
347 dev_dbg_ratelimited(bus->dev,
349 bus->last_cmd[addr]);
359 if (!bus->polling_mode)
360 finish_wait(&bus->rirb_wq, &wait);
362 return -EIO;
366 * snd_hdac_bus_send_cmd - send a command verb via CORB or PIO
367 * @bus: HD-audio core bus
374 if (bus->use_pio_for_commands)
382 * snd_hdac_bus_get_response - receive a response via RIRB or PIO
383 * @bus: HD-audio core bus
392 if (bus->use_pio_for_commands)
401 * snd_hdac_bus_parse_capabilities - parse capability structure
418 dev_dbg(bus->dev, "Capability version: 0x%x\n",
421 dev_dbg(bus->dev, "HDA capability ID: 0x%x\n",
424 if (cur_cap == -1) {
425 dev_dbg(bus->dev, "Invalid capability reg read\n");
431 dev_dbg(bus->dev, "Found ML capability\n");
432 bus->mlcap = bus->remap_addr + offset;
436 dev_dbg(bus->dev, "Found GTS capability offset=%x\n", offset);
437 bus->gtscap = bus->remap_addr + offset;
442 dev_dbg(bus->dev, "Found PP capability offset=%x\n", offset);
443 bus->ppcap = bus->remap_addr + offset;
448 dev_dbg(bus->dev, "Found SPB capability\n");
449 bus->spbcap = bus->remap_addr + offset;
454 dev_dbg(bus->dev, "Found DRSM capability\n");
455 bus->drsmcap = bus->remap_addr + offset;
459 dev_err(bus->dev, "Unknown capability %d\n", cur_cap);
467 dev_err(bus->dev, "We exceeded HDAC capabilities!!!\n");
485 * snd_hdac_bus_enter_link_reset - enter link reset
486 * @bus: HD-audio core bus
505 * snd_hdac_bus_exit_link_reset - exit link reset
506 * @bus: HD-audio core bus
549 dev_dbg(bus->dev, "controller not ready!\n");
550 return -EBUSY;
554 if (!bus->codec_mask) {
555 bus->codec_mask = snd_hdac_chip_readw(bus, STATESTS);
556 dev_dbg(bus->dev, "codec_mask = 0x%lx\n", bus->codec_mask);
572 /* disable interrupts */
577 /* disable interrupts in stream descriptor */
578 list_for_each_entry(azx_dev, &bus->stream_list, list)
581 /* disable SIE for all streams & disable controller CIE and GIE */
591 list_for_each_entry(azx_dev, &bus->stream_list, list)
605 * snd_hdac_bus_init_chip - reset and start the controller registers
606 * @bus: HD-audio core bus
611 if (bus->chip_init)
627 if (bus->use_posbuf && bus->posbuf.addr) {
628 snd_hdac_chip_writel(bus, DPLBASE, (u32)bus->posbuf.addr);
629 snd_hdac_chip_writel(bus, DPUBASE, upper_32_bits(bus->posbuf.addr));
632 bus->chip_init = true;
639 * snd_hdac_bus_stop_chip - disable the whole IRQ and I/Os
640 * @bus: HD-audio core bus
644 if (!bus->chip_init)
647 /* disable interrupts */
651 /* disable CORB/RIRB */
654 /* disable position buffer */
655 if (bus->posbuf.addr) {
660 bus->chip_init = false;
665 * snd_hdac_bus_handle_stream_irq - interrupt handler for streams
666 * @bus: HD-audio core bus
680 list_for_each_entry(azx_dev, &bus->stream_list, list) {
681 if (status & azx_dev->sd_int_sta_mask) {
684 handled |= 1 << azx_dev->index;
685 if ((!azx_dev->substream && !azx_dev->cstream) ||
686 !azx_dev->running || !(sd_status & SD_INT_COMPLETE))
697 * snd_hdac_bus_alloc_stream_pages - allocate BDL and other buffers
698 * @bus: HD-audio core bus
707 int dma_type = bus->dma_type ? bus->dma_type : SNDRV_DMA_TYPE_DEV;
710 list_for_each_entry(s, &bus->stream_list, list) {
712 err = snd_dma_alloc_pages(dma_type, bus->dev,
713 BDL_SIZE, &s->bdl);
716 return -ENOMEM;
720 return -EINVAL;
722 err = snd_dma_alloc_pages(dma_type, bus->dev,
723 num_streams * 8, &bus->posbuf);
725 return -ENOMEM;
726 list_for_each_entry(s, &bus->stream_list, list)
727 s->posbuf = (__le32 *)(bus->posbuf.area + s->index * 8);
730 return snd_dma_alloc_pages(dma_type, bus->dev, PAGE_SIZE, &bus->rb);
735 * snd_hdac_bus_free_stream_pages - release BDL and other buffers
736 * @bus: HD-audio core bus
742 list_for_each_entry(s, &bus->stream_list, list) {
743 if (s->bdl.area)
744 snd_dma_free_pages(&s->bdl);
747 if (bus->rb.area)
748 snd_dma_free_pages(&bus->rb);
749 if (bus->posbuf.area)
750 snd_dma_free_pages(&bus->posbuf);
755 * snd_hdac_bus_link_power - power up/down codec link
756 * @codec: HD-audio device
757 * @enable: whether to power-up the link
762 set_bit(codec->addr, &codec->bus->codec_powered);
764 clear_bit(codec->addr, &codec->bus->codec_powered);