14 static void azx_clear_corbrp(struct hdac_bus *bus)  in azx_clear_corbrp()  argument
19 		if (snd_hdac_chip_readw(bus, CORBRP) & AZX_CORBRP_RST)  in azx_clear_corbrp()
24 		dev_err(bus->dev, "CORB reset timeout#1, CORBRP = %d\n",  in azx_clear_corbrp()
25 			snd_hdac_chip_readw(bus, CORBRP));  in azx_clear_corbrp()
27 	snd_hdac_chip_writew(bus, CORBRP, 0);  in azx_clear_corbrp()
29 		if (snd_hdac_chip_readw(bus, CORBRP) == 0)  in azx_clear_corbrp()
34 		dev_err(bus->dev, "CORB reset timeout#2, CORBRP = %d\n",  in azx_clear_corbrp()
35 			snd_hdac_chip_readw(bus, CORBRP));  in azx_clear_corbrp()
40  * @bus: HD-audio core bus
42 void snd_hdac_bus_init_cmd_io(struct hdac_bus *bus)  in snd_hdac_bus_init_cmd_io()  argument
44 	WARN_ON_ONCE(!bus->rb.area);  in snd_hdac_bus_init_cmd_io()
46 	spin_lock_irq(&bus->reg_lock);  in snd_hdac_bus_init_cmd_io()
48 	bus->corb.addr = bus->rb.addr;  in snd_hdac_bus_init_cmd_io()
49 	bus->corb.buf = (__le32 *)bus->rb.area;  in snd_hdac_bus_init_cmd_io()
50 	snd_hdac_chip_writel(bus, CORBLBASE, (u32)bus->corb.addr);  in snd_hdac_bus_init_cmd_io()
51 	snd_hdac_chip_writel(bus, CORBUBASE, upper_32_bits(bus->corb.addr));  in snd_hdac_bus_init_cmd_io()
54 	snd_hdac_chip_writeb(bus, CORBSIZE, 0x02);  in snd_hdac_bus_init_cmd_io()
56 	snd_hdac_chip_writew(bus, CORBWP, 0);  in snd_hdac_bus_init_cmd_io()
59 	snd_hdac_chip_writew(bus, CORBRP, AZX_CORBRP_RST);  in snd_hdac_bus_init_cmd_io()
60 	if (!bus->corbrp_self_clear)  in snd_hdac_bus_init_cmd_io()
61 		azx_clear_corbrp(bus);  in snd_hdac_bus_init_cmd_io()
64 	snd_hdac_chip_writeb(bus, CORBCTL, AZX_CORBCTL_RUN);  in snd_hdac_bus_init_cmd_io()
67 	bus->rirb.addr = bus->rb.addr + 2048;  in snd_hdac_bus_init_cmd_io()
68 	bus->rirb.buf = (__le32 *)(bus->rb.area + 2048);  in snd_hdac_bus_init_cmd_io()
69 	bus->rirb.wp = bus->rirb.rp = 0;  in snd_hdac_bus_init_cmd_io()
70 	memset(bus->rirb.cmds, 0, sizeof(bus->rirb.cmds));  in snd_hdac_bus_init_cmd_io()
71 	snd_hdac_chip_writel(bus, RIRBLBASE, (u32)bus->rirb.addr);  in snd_hdac_bus_init_cmd_io()
72 	snd_hdac_chip_writel(bus, RIRBUBASE, upper_32_bits(bus->rirb.addr));  in snd_hdac_bus_init_cmd_io()
75 	snd_hdac_chip_writeb(bus, RIRBSIZE, 0x02);  in snd_hdac_bus_init_cmd_io()
77 	snd_hdac_chip_writew(bus, RIRBWP, AZX_RIRBWP_RST);  in snd_hdac_bus_init_cmd_io()
79 	snd_hdac_chip_writew(bus, RINTCNT, 1);  in snd_hdac_bus_init_cmd_io()
81 	snd_hdac_chip_writeb(bus, RIRBCTL, AZX_RBCTL_DMA_EN | AZX_RBCTL_IRQ_EN);  in snd_hdac_bus_init_cmd_io()
83 	snd_hdac_chip_updatel(bus, GCTL, AZX_GCTL_UNSOL, AZX_GCTL_UNSOL);  in snd_hdac_bus_init_cmd_io()
84 	spin_unlock_irq(&bus->reg_lock);  in snd_hdac_bus_init_cmd_io()
89 static void hdac_wait_for_cmd_dmas(struct hdac_bus *bus)  in hdac_wait_for_cmd_dmas()  argument
94 	while ((snd_hdac_chip_readb(bus, RIRBCTL) & AZX_RBCTL_DMA_EN)  in hdac_wait_for_cmd_dmas()
99 	while ((snd_hdac_chip_readb(bus, CORBCTL) & AZX_CORBCTL_RUN)  in hdac_wait_for_cmd_dmas()
106  * @bus: HD-audio core bus
108 void snd_hdac_bus_stop_cmd_io(struct hdac_bus *bus)  in snd_hdac_bus_stop_cmd_io()  argument
110 	spin_lock_irq(&bus->reg_lock);  in snd_hdac_bus_stop_cmd_io()
112 	snd_hdac_chip_writeb(bus, RIRBCTL, 0);  in snd_hdac_bus_stop_cmd_io()
113 	snd_hdac_chip_writeb(bus, CORBCTL, 0);  in snd_hdac_bus_stop_cmd_io()
114 	spin_unlock_irq(&bus->reg_lock);  in snd_hdac_bus_stop_cmd_io()
116 	hdac_wait_for_cmd_dmas(bus);  in snd_hdac_bus_stop_cmd_io()
118 	spin_lock_irq(&bus->reg_lock);  in snd_hdac_bus_stop_cmd_io()
120 	snd_hdac_chip_updatel(bus, GCTL, AZX_GCTL_UNSOL, 0);  in snd_hdac_bus_stop_cmd_io()
121 	spin_unlock_irq(&bus->reg_lock);  in snd_hdac_bus_stop_cmd_io()
136  * @bus: HD-audio core bus
141 int snd_hdac_bus_send_cmd(struct hdac_bus *bus, unsigned int val)  in snd_hdac_bus_send_cmd()  argument
146 	spin_lock_irq(&bus->reg_lock);  in snd_hdac_bus_send_cmd()
148 	bus->last_cmd[azx_command_addr(val)] = val;  in snd_hdac_bus_send_cmd()
151 	wp = snd_hdac_chip_readw(bus, CORBWP);  in snd_hdac_bus_send_cmd()
154 		spin_unlock_irq(&bus->reg_lock);  in snd_hdac_bus_send_cmd()
160 	rp = snd_hdac_chip_readw(bus, CORBRP);  in snd_hdac_bus_send_cmd()
163 		spin_unlock_irq(&bus->reg_lock);  in snd_hdac_bus_send_cmd()
167 	bus->rirb.cmds[addr]++;  in snd_hdac_bus_send_cmd()
168 	bus->corb.buf[wp] = cpu_to_le32(val);  in snd_hdac_bus_send_cmd()
169 	snd_hdac_chip_writew(bus, CORBWP, wp);  in snd_hdac_bus_send_cmd()
171 	spin_unlock_irq(&bus->reg_lock);  in snd_hdac_bus_send_cmd()
181  * @bus: HD-audio core bus
185 void snd_hdac_bus_update_rirb(struct hdac_bus *bus)  in snd_hdac_bus_update_rirb()  argument
191 	wp = snd_hdac_chip_readw(bus, RIRBWP);  in snd_hdac_bus_update_rirb()
197 	if (wp == bus->rirb.wp)  in snd_hdac_bus_update_rirb()
199 	bus->rirb.wp = wp;  in snd_hdac_bus_update_rirb()
201 	while (bus->rirb.rp != wp) {  in snd_hdac_bus_update_rirb()
202 		bus->rirb.rp++;  in snd_hdac_bus_update_rirb()
203 		bus->rirb.rp %= AZX_MAX_RIRB_ENTRIES;  in snd_hdac_bus_update_rirb()
205 		rp = bus->rirb.rp << 1; /* an RIRB entry is 8-bytes */  in snd_hdac_bus_update_rirb()
206 		res_ex = le32_to_cpu(bus->rirb.buf[rp + 1]);  in snd_hdac_bus_update_rirb()
207 		res = le32_to_cpu(bus->rirb.buf[rp]);  in snd_hdac_bus_update_rirb()
210 			dev_err(bus->dev,  in snd_hdac_bus_update_rirb()
212 				res, res_ex, bus->rirb.rp, wp);  in snd_hdac_bus_update_rirb()
215 			snd_hdac_bus_queue_event(bus, res, res_ex);  in snd_hdac_bus_update_rirb()
216 		else if (bus->rirb.cmds[addr]) {  in snd_hdac_bus_update_rirb()
217 			bus->rirb.res[addr] = res;  in snd_hdac_bus_update_rirb()
218 			bus->rirb.cmds[addr]--;  in snd_hdac_bus_update_rirb()
220 			dev_err_ratelimited(bus->dev,  in snd_hdac_bus_update_rirb()
222 				res, res_ex, bus->last_cmd[addr]);  in snd_hdac_bus_update_rirb()
230  * @bus: HD-audio core bus
236 int snd_hdac_bus_get_response(struct hdac_bus *bus, unsigned int addr,  in snd_hdac_bus_get_response()  argument
245 		spin_lock_irq(&bus->reg_lock);  in snd_hdac_bus_get_response()
246 		if (bus->polling_mode)  in snd_hdac_bus_get_response()
247 			snd_hdac_bus_update_rirb(bus);  in snd_hdac_bus_get_response()
248 		if (!bus->rirb.cmds[addr]) {  in snd_hdac_bus_get_response()
250 				*res = bus->rirb.res[addr]; /* the last value */  in snd_hdac_bus_get_response()
251 			spin_unlock_irq(&bus->reg_lock);  in snd_hdac_bus_get_response()
254 		spin_unlock_irq(&bus->reg_lock);  in snd_hdac_bus_get_response()
272  * @bus: the pointer to bus object
276 int snd_hdac_bus_parse_capabilities(struct hdac_bus *bus)  in snd_hdac_bus_parse_capabilities()  argument
282 	offset = snd_hdac_chip_readw(bus, LLCH);  in snd_hdac_bus_parse_capabilities()
286 		cur_cap = _snd_hdac_chip_readl(bus, offset);  in snd_hdac_bus_parse_capabilities()
288 		dev_dbg(bus->dev, "Capability version: 0x%x\n",  in snd_hdac_bus_parse_capabilities()
291 		dev_dbg(bus->dev, "HDA capability ID: 0x%x\n",  in snd_hdac_bus_parse_capabilities()
295 			dev_dbg(bus->dev, "Invalid capability reg read\n");  in snd_hdac_bus_parse_capabilities()
301 			dev_dbg(bus->dev, "Found ML capability\n");  in snd_hdac_bus_parse_capabilities()
302 			bus->mlcap = bus->remap_addr + offset;  in snd_hdac_bus_parse_capabilities()
306 			dev_dbg(bus->dev, "Found GTS capability offset=%x\n", offset);  in snd_hdac_bus_parse_capabilities()
307 			bus->gtscap = bus->remap_addr + offset;  in snd_hdac_bus_parse_capabilities()
312 			dev_dbg(bus->dev, "Found PP capability offset=%x\n", offset);  in snd_hdac_bus_parse_capabilities()
313 			bus->ppcap = bus->remap_addr + offset;  in snd_hdac_bus_parse_capabilities()
318 			dev_dbg(bus->dev, "Found SPB capability\n");  in snd_hdac_bus_parse_capabilities()
319 			bus->spbcap = bus->remap_addr + offset;  in snd_hdac_bus_parse_capabilities()
324 			dev_dbg(bus->dev, "Found DRSM capability\n");  in snd_hdac_bus_parse_capabilities()
325 			bus->drsmcap = bus->remap_addr + offset;  in snd_hdac_bus_parse_capabilities()
329 			dev_err(bus->dev, "Unknown capability %d\n", cur_cap);  in snd_hdac_bus_parse_capabilities()
337 			dev_err(bus->dev, "We exceeded HDAC capabilities!!!\n");  in snd_hdac_bus_parse_capabilities()
356  * @bus: HD-audio core bus
360 void snd_hdac_bus_enter_link_reset(struct hdac_bus *bus)  in snd_hdac_bus_enter_link_reset()  argument
365 	snd_hdac_chip_updatel(bus, GCTL, AZX_GCTL_RESET, 0);  in snd_hdac_bus_enter_link_reset()
368 	while ((snd_hdac_chip_readb(bus, GCTL) & AZX_GCTL_RESET) &&  in snd_hdac_bus_enter_link_reset()
376  * @bus: HD-audio core bus
380 void snd_hdac_bus_exit_link_reset(struct hdac_bus *bus)  in snd_hdac_bus_exit_link_reset()  argument
384 	snd_hdac_chip_updateb(bus, GCTL, AZX_GCTL_RESET, AZX_GCTL_RESET);  in snd_hdac_bus_exit_link_reset()
387 	while (!snd_hdac_chip_readb(bus, GCTL) && time_before(jiffies, timeout))  in snd_hdac_bus_exit_link_reset()
393 int snd_hdac_bus_reset_link(struct hdac_bus *bus, bool full_reset)  in snd_hdac_bus_reset_link()  argument
399 	snd_hdac_chip_writew(bus, STATESTS, STATESTS_INT_MASK);  in snd_hdac_bus_reset_link()
402 	snd_hdac_bus_enter_link_reset(bus);  in snd_hdac_bus_reset_link()
410 	snd_hdac_bus_exit_link_reset(bus);  in snd_hdac_bus_reset_link()
417 	if (!snd_hdac_chip_readb(bus, GCTL)) {  in snd_hdac_bus_reset_link()
418 		dev_dbg(bus->dev, "controller not ready!\n");  in snd_hdac_bus_reset_link()
423 	if (!bus->codec_mask) {  in snd_hdac_bus_reset_link()
424 		bus->codec_mask = snd_hdac_chip_readw(bus, STATESTS);  in snd_hdac_bus_reset_link()
425 		dev_dbg(bus->dev, "codec_mask = 0x%lx\n", bus->codec_mask);  in snd_hdac_bus_reset_link()
433 static void azx_int_enable(struct hdac_bus *bus)  in azx_int_enable()  argument
436 	snd_hdac_chip_updatel(bus, INTCTL,  in azx_int_enable()
442 static void azx_int_disable(struct hdac_bus *bus)  in azx_int_disable()  argument
447 	list_for_each_entry(azx_dev, &bus->stream_list, list)  in azx_int_disable()
451 	snd_hdac_chip_writeb(bus, INTCTL, 0);  in azx_int_disable()
454 	snd_hdac_chip_updatel(bus, INTCTL, AZX_INT_CTRL_EN | AZX_INT_GLOBAL_EN, 0);  in azx_int_disable()
458 static void azx_int_clear(struct hdac_bus *bus)  in azx_int_clear()  argument
463 	list_for_each_entry(azx_dev, &bus->stream_list, list)  in azx_int_clear()
467 	snd_hdac_chip_writew(bus, STATESTS, STATESTS_INT_MASK);  in azx_int_clear()
470 	snd_hdac_chip_writeb(bus, RIRBSTS, RIRB_INT_MASK);  in azx_int_clear()
473 	snd_hdac_chip_writel(bus, INTSTS, AZX_INT_CTRL_EN | AZX_INT_ALL_STREAM);  in azx_int_clear()
478  * @bus: HD-audio core bus
481 bool snd_hdac_bus_init_chip(struct hdac_bus *bus, bool full_reset)  in snd_hdac_bus_init_chip()  argument
483 	if (bus->chip_init)  in snd_hdac_bus_init_chip()
487 	snd_hdac_bus_reset_link(bus, full_reset);  in snd_hdac_bus_init_chip()
490 	azx_int_clear(bus);  in snd_hdac_bus_init_chip()
493 	snd_hdac_bus_init_cmd_io(bus);  in snd_hdac_bus_init_chip()
496 	azx_int_enable(bus);  in snd_hdac_bus_init_chip()
499 	if (bus->use_posbuf && bus->posbuf.addr) {  in snd_hdac_bus_init_chip()
500 		snd_hdac_chip_writel(bus, DPLBASE, (u32)bus->posbuf.addr);  in snd_hdac_bus_init_chip()
501 		snd_hdac_chip_writel(bus, DPUBASE, upper_32_bits(bus->posbuf.addr));  in snd_hdac_bus_init_chip()
504 	bus->chip_init = true;  in snd_hdac_bus_init_chip()
511  * @bus: HD-audio core bus
513 void snd_hdac_bus_stop_chip(struct hdac_bus *bus)  in snd_hdac_bus_stop_chip()  argument
515 	if (!bus->chip_init)  in snd_hdac_bus_stop_chip()
519 	azx_int_disable(bus);  in snd_hdac_bus_stop_chip()
520 	azx_int_clear(bus);  in snd_hdac_bus_stop_chip()
523 	snd_hdac_bus_stop_cmd_io(bus);  in snd_hdac_bus_stop_chip()
526 	if (bus->posbuf.addr) {  in snd_hdac_bus_stop_chip()
527 		snd_hdac_chip_writel(bus, DPLBASE, 0);  in snd_hdac_bus_stop_chip()
528 		snd_hdac_chip_writel(bus, DPUBASE, 0);  in snd_hdac_bus_stop_chip()
531 	bus->chip_init = false;  in snd_hdac_bus_stop_chip()
537  * @bus: HD-audio core bus
543 int snd_hdac_bus_handle_stream_irq(struct hdac_bus *bus, unsigned int status,  in snd_hdac_bus_handle_stream_irq()  argument
551 	list_for_each_entry(azx_dev, &bus->stream_list, list) {  in snd_hdac_bus_handle_stream_irq()
560 				ack(bus, azx_dev);  in snd_hdac_bus_handle_stream_irq()
569  * @bus: HD-audio core bus
574 int snd_hdac_bus_alloc_stream_pages(struct hdac_bus *bus)  in snd_hdac_bus_alloc_stream_pages()  argument
578 	int dma_type = bus->dma_type ? bus->dma_type : SNDRV_DMA_TYPE_DEV;  in snd_hdac_bus_alloc_stream_pages()
581 	list_for_each_entry(s, &bus->stream_list, list) {  in snd_hdac_bus_alloc_stream_pages()
583 		err = snd_dma_alloc_pages(dma_type, bus->dev,  in snd_hdac_bus_alloc_stream_pages()
593 	err = snd_dma_alloc_pages(dma_type, bus->dev,  in snd_hdac_bus_alloc_stream_pages()
594 				  num_streams * 8, &bus->posbuf);  in snd_hdac_bus_alloc_stream_pages()
597 	list_for_each_entry(s, &bus->stream_list, list)  in snd_hdac_bus_alloc_stream_pages()
598 		s->posbuf = (__le32 *)(bus->posbuf.area + s->index * 8);  in snd_hdac_bus_alloc_stream_pages()
601 	return snd_dma_alloc_pages(dma_type, bus->dev, PAGE_SIZE, &bus->rb);  in snd_hdac_bus_alloc_stream_pages()
607  * @bus: HD-audio core bus
609 void snd_hdac_bus_free_stream_pages(struct hdac_bus *bus)  in snd_hdac_bus_free_stream_pages()  argument
613 	list_for_each_entry(s, &bus->stream_list, list) {  in snd_hdac_bus_free_stream_pages()
618 	if (bus->rb.area)  in snd_hdac_bus_free_stream_pages()
619 		snd_dma_free_pages(&bus->rb);  in snd_hdac_bus_free_stream_pages()
620 	if (bus->posbuf.area)  in snd_hdac_bus_free_stream_pages()
621 		snd_dma_free_pages(&bus->posbuf);  in snd_hdac_bus_free_stream_pages()