15 static void azx_clear_corbrp(struct hdac_bus *bus)  in azx_clear_corbrp()  argument
20 		if (snd_hdac_chip_readw(bus, CORBRP) & AZX_CORBRP_RST)  in azx_clear_corbrp()
25 		dev_err(bus->dev, "CORB reset timeout#1, CORBRP = %d\n",  in azx_clear_corbrp()
26 			snd_hdac_chip_readw(bus, CORBRP));  in azx_clear_corbrp()
28 	snd_hdac_chip_writew(bus, CORBRP, 0);  in azx_clear_corbrp()
30 		if (snd_hdac_chip_readw(bus, CORBRP) == 0)  in azx_clear_corbrp()
35 		dev_err(bus->dev, "CORB reset timeout#2, CORBRP = %d\n",  in azx_clear_corbrp()
36 			snd_hdac_chip_readw(bus, CORBRP));  in azx_clear_corbrp()
41  * @bus: HD-audio core bus
43 void snd_hdac_bus_init_cmd_io(struct hdac_bus *bus)  in snd_hdac_bus_init_cmd_io()  argument
45 	WARN_ON_ONCE(!bus->rb.area);  in snd_hdac_bus_init_cmd_io()
47 	spin_lock_irq(&bus->reg_lock);  in snd_hdac_bus_init_cmd_io()
49 	bus->corb.addr = bus->rb.addr;  in snd_hdac_bus_init_cmd_io()
50 	bus->corb.buf = (__le32 *)bus->rb.area;  in snd_hdac_bus_init_cmd_io()
51 	snd_hdac_chip_writel(bus, CORBLBASE, (u32)bus->corb.addr);  in snd_hdac_bus_init_cmd_io()
52 	snd_hdac_chip_writel(bus, CORBUBASE, upper_32_bits(bus->corb.addr));  in snd_hdac_bus_init_cmd_io()
55 	snd_hdac_chip_writeb(bus, CORBSIZE, 0x02);  in snd_hdac_bus_init_cmd_io()
57 	snd_hdac_chip_writew(bus, CORBWP, 0);  in snd_hdac_bus_init_cmd_io()
60 	snd_hdac_chip_writew(bus, CORBRP, AZX_CORBRP_RST);  in snd_hdac_bus_init_cmd_io()
61 	if (!bus->corbrp_self_clear)  in snd_hdac_bus_init_cmd_io()
62 		azx_clear_corbrp(bus);  in snd_hdac_bus_init_cmd_io()
65 	snd_hdac_chip_writeb(bus, CORBCTL, AZX_CORBCTL_RUN);  in snd_hdac_bus_init_cmd_io()
68 	bus->rirb.addr = bus->rb.addr + 2048;  in snd_hdac_bus_init_cmd_io()
69 	bus->rirb.buf = (__le32 *)(bus->rb.area + 2048);  in snd_hdac_bus_init_cmd_io()
70 	bus->rirb.wp = bus->rirb.rp = 0;  in snd_hdac_bus_init_cmd_io()
71 	memset(bus->rirb.cmds, 0, sizeof(bus->rirb.cmds));  in snd_hdac_bus_init_cmd_io()
72 	snd_hdac_chip_writel(bus, RIRBLBASE, (u32)bus->rirb.addr);  in snd_hdac_bus_init_cmd_io()
73 	snd_hdac_chip_writel(bus, RIRBUBASE, upper_32_bits(bus->rirb.addr));  in snd_hdac_bus_init_cmd_io()
76 	snd_hdac_chip_writeb(bus, RIRBSIZE, 0x02);  in snd_hdac_bus_init_cmd_io()
78 	snd_hdac_chip_writew(bus, RIRBWP, AZX_RIRBWP_RST);  in snd_hdac_bus_init_cmd_io()
80 	snd_hdac_chip_writew(bus, RINTCNT, 1);  in snd_hdac_bus_init_cmd_io()
82 	if (bus->not_use_interrupts)  in snd_hdac_bus_init_cmd_io()
83 		snd_hdac_chip_writeb(bus, RIRBCTL, AZX_RBCTL_DMA_EN);  in snd_hdac_bus_init_cmd_io()
85 		snd_hdac_chip_writeb(bus, RIRBCTL, AZX_RBCTL_DMA_EN | AZX_RBCTL_IRQ_EN);  in snd_hdac_bus_init_cmd_io()
87 	snd_hdac_chip_updatel(bus, GCTL, AZX_GCTL_UNSOL, AZX_GCTL_UNSOL);  in snd_hdac_bus_init_cmd_io()
88 	spin_unlock_irq(&bus->reg_lock);  in snd_hdac_bus_init_cmd_io()
93 static void hdac_wait_for_cmd_dmas(struct hdac_bus *bus)  in hdac_wait_for_cmd_dmas()  argument
98 	while ((snd_hdac_chip_readb(bus, RIRBCTL) & AZX_RBCTL_DMA_EN)  in hdac_wait_for_cmd_dmas()
103 	while ((snd_hdac_chip_readb(bus, CORBCTL) & AZX_CORBCTL_RUN)  in hdac_wait_for_cmd_dmas()
110  * @bus: HD-audio core bus
112 void snd_hdac_bus_stop_cmd_io(struct hdac_bus *bus)  in snd_hdac_bus_stop_cmd_io()  argument
114 	spin_lock_irq(&bus->reg_lock);  in snd_hdac_bus_stop_cmd_io()
116 	snd_hdac_chip_writeb(bus, RIRBCTL, 0);  in snd_hdac_bus_stop_cmd_io()
117 	snd_hdac_chip_writeb(bus, CORBCTL, 0);  in snd_hdac_bus_stop_cmd_io()
118 	spin_unlock_irq(&bus->reg_lock);  in snd_hdac_bus_stop_cmd_io()
120 	hdac_wait_for_cmd_dmas(bus);  in snd_hdac_bus_stop_cmd_io()
122 	spin_lock_irq(&bus->reg_lock);  in snd_hdac_bus_stop_cmd_io()
124 	snd_hdac_chip_updatel(bus, GCTL, AZX_GCTL_UNSOL, 0);  in snd_hdac_bus_stop_cmd_io()
125 	spin_unlock_irq(&bus->reg_lock);  in snd_hdac_bus_stop_cmd_io()
140  * @bus: HD-audio core bus
145 int snd_hdac_bus_send_cmd(struct hdac_bus *bus, unsigned int val)  in snd_hdac_bus_send_cmd()  argument
150 	spin_lock_irq(&bus->reg_lock);  in snd_hdac_bus_send_cmd()
152 	bus->last_cmd[azx_command_addr(val)] = val;  in snd_hdac_bus_send_cmd()
155 	wp = snd_hdac_chip_readw(bus, CORBWP);  in snd_hdac_bus_send_cmd()
158 		spin_unlock_irq(&bus->reg_lock);  in snd_hdac_bus_send_cmd()
164 	rp = snd_hdac_chip_readw(bus, CORBRP);  in snd_hdac_bus_send_cmd()
167 		spin_unlock_irq(&bus->reg_lock);  in snd_hdac_bus_send_cmd()
171 	bus->rirb.cmds[addr]++;  in snd_hdac_bus_send_cmd()
172 	bus->corb.buf[wp] = cpu_to_le32(val);  in snd_hdac_bus_send_cmd()
173 	snd_hdac_chip_writew(bus, CORBWP, wp);  in snd_hdac_bus_send_cmd()
175 	spin_unlock_irq(&bus->reg_lock);  in snd_hdac_bus_send_cmd()
185  * @bus: HD-audio core bus
188  * The caller needs bus->reg_lock spinlock before calling this.
190 void snd_hdac_bus_update_rirb(struct hdac_bus *bus)  in snd_hdac_bus_update_rirb()  argument
196 	wp = snd_hdac_chip_readw(bus, RIRBWP);  in snd_hdac_bus_update_rirb()
202 	if (wp == bus->rirb.wp)  in snd_hdac_bus_update_rirb()
204 	bus->rirb.wp = wp;  in snd_hdac_bus_update_rirb()
206 	while (bus->rirb.rp != wp) {  in snd_hdac_bus_update_rirb()
207 		bus->rirb.rp++;  in snd_hdac_bus_update_rirb()
208 		bus->rirb.rp %= AZX_MAX_RIRB_ENTRIES;  in snd_hdac_bus_update_rirb()
210 		rp = bus->rirb.rp << 1; /* an RIRB entry is 8-bytes */  in snd_hdac_bus_update_rirb()
211 		res_ex = le32_to_cpu(bus->rirb.buf[rp + 1]);  in snd_hdac_bus_update_rirb()
212 		res = le32_to_cpu(bus->rirb.buf[rp]);  in snd_hdac_bus_update_rirb()
215 			dev_err(bus->dev,  in snd_hdac_bus_update_rirb()
217 				res, res_ex, bus->rirb.rp, wp);  in snd_hdac_bus_update_rirb()
220 			snd_hdac_bus_queue_event(bus, res, res_ex);  in snd_hdac_bus_update_rirb()
221 		else if (bus->rirb.cmds[addr]) {  in snd_hdac_bus_update_rirb()
222 			bus->rirb.res[addr] = res;  in snd_hdac_bus_update_rirb()
223 			bus->rirb.cmds[addr]--;  in snd_hdac_bus_update_rirb()
224 			if (!bus->rirb.cmds[addr] &&  in snd_hdac_bus_update_rirb()
225 			    waitqueue_active(&bus->rirb_wq))  in snd_hdac_bus_update_rirb()
226 				wake_up(&bus->rirb_wq);  in snd_hdac_bus_update_rirb()
228 			dev_err_ratelimited(bus->dev,  in snd_hdac_bus_update_rirb()
230 				res, res_ex, bus->last_cmd[addr]);  in snd_hdac_bus_update_rirb()
238  * @bus: HD-audio core bus
244 int snd_hdac_bus_get_response(struct hdac_bus *bus, unsigned int addr,  in snd_hdac_bus_get_response()  argument
256 		spin_lock_irq(&bus->reg_lock);  in snd_hdac_bus_get_response()
257 		if (!bus->polling_mode)  in snd_hdac_bus_get_response()
258 			prepare_to_wait(&bus->rirb_wq, &wait,  in snd_hdac_bus_get_response()
260 		if (bus->polling_mode)  in snd_hdac_bus_get_response()
261 			snd_hdac_bus_update_rirb(bus);  in snd_hdac_bus_get_response()
262 		if (!bus->rirb.cmds[addr]) {  in snd_hdac_bus_get_response()
264 				*res = bus->rirb.res[addr]; /* the last value */  in snd_hdac_bus_get_response()
265 			if (!bus->polling_mode)  in snd_hdac_bus_get_response()
266 				finish_wait(&bus->rirb_wq, &wait);  in snd_hdac_bus_get_response()
267 			spin_unlock_irq(&bus->reg_lock);  in snd_hdac_bus_get_response()
270 		spin_unlock_irq(&bus->reg_lock);  in snd_hdac_bus_get_response()
274 		if (!bus->polling_mode) {  in snd_hdac_bus_get_response()
276 		} else if (bus->needs_damn_long_delay ||  in snd_hdac_bus_get_response()
279 				dev_dbg_ratelimited(bus->dev,  in snd_hdac_bus_get_response()
281 						    bus->last_cmd[addr]);  in snd_hdac_bus_get_response()
291 	if (!bus->polling_mode)  in snd_hdac_bus_get_response()
292 		finish_wait(&bus->rirb_wq, &wait);  in snd_hdac_bus_get_response()
301  * @bus: the pointer to bus object
305 int snd_hdac_bus_parse_capabilities(struct hdac_bus *bus)  in snd_hdac_bus_parse_capabilities()  argument
311 	offset = snd_hdac_chip_readw(bus, LLCH);  in snd_hdac_bus_parse_capabilities()
315 		cur_cap = _snd_hdac_chip_readl(bus, offset);  in snd_hdac_bus_parse_capabilities()
317 		dev_dbg(bus->dev, "Capability version: 0x%x\n",  in snd_hdac_bus_parse_capabilities()
320 		dev_dbg(bus->dev, "HDA capability ID: 0x%x\n",  in snd_hdac_bus_parse_capabilities()
324 			dev_dbg(bus->dev, "Invalid capability reg read\n");  in snd_hdac_bus_parse_capabilities()
330 			dev_dbg(bus->dev, "Found ML capability\n");  in snd_hdac_bus_parse_capabilities()
331 			bus->mlcap = bus->remap_addr + offset;  in snd_hdac_bus_parse_capabilities()
335 			dev_dbg(bus->dev, "Found GTS capability offset=%x\n", offset);  in snd_hdac_bus_parse_capabilities()
336 			bus->gtscap = bus->remap_addr + offset;  in snd_hdac_bus_parse_capabilities()
341 			dev_dbg(bus->dev, "Found PP capability offset=%x\n", offset);  in snd_hdac_bus_parse_capabilities()
342 			bus->ppcap = bus->remap_addr + offset;  in snd_hdac_bus_parse_capabilities()
347 			dev_dbg(bus->dev, "Found SPB capability\n");  in snd_hdac_bus_parse_capabilities()
348 			bus->spbcap = bus->remap_addr + offset;  in snd_hdac_bus_parse_capabilities()
353 			dev_dbg(bus->dev, "Found DRSM capability\n");  in snd_hdac_bus_parse_capabilities()
354 			bus->drsmcap = bus->remap_addr + offset;  in snd_hdac_bus_parse_capabilities()
358 			dev_err(bus->dev, "Unknown capability %d\n", cur_cap);  in snd_hdac_bus_parse_capabilities()
366 			dev_err(bus->dev, "We exceeded HDAC capabilities!!!\n");  in snd_hdac_bus_parse_capabilities()
385  * @bus: HD-audio core bus
389 void snd_hdac_bus_enter_link_reset(struct hdac_bus *bus)  in snd_hdac_bus_enter_link_reset()  argument
394 	snd_hdac_chip_updatel(bus, GCTL, AZX_GCTL_RESET, 0);  in snd_hdac_bus_enter_link_reset()
397 	while ((snd_hdac_chip_readb(bus, GCTL) & AZX_GCTL_RESET) &&  in snd_hdac_bus_enter_link_reset()
405  * @bus: HD-audio core bus
409 void snd_hdac_bus_exit_link_reset(struct hdac_bus *bus)  in snd_hdac_bus_exit_link_reset()  argument
413 	snd_hdac_chip_updateb(bus, GCTL, AZX_GCTL_RESET, AZX_GCTL_RESET);  in snd_hdac_bus_exit_link_reset()
416 	while (!snd_hdac_chip_readb(bus, GCTL) && time_before(jiffies, timeout))  in snd_hdac_bus_exit_link_reset()
422 int snd_hdac_bus_reset_link(struct hdac_bus *bus, bool full_reset)  in snd_hdac_bus_reset_link()  argument
428 	if (snd_hdac_chip_readb(bus, GCTL) & AZX_GCTL_RESET)  in snd_hdac_bus_reset_link()
429 		snd_hdac_chip_writew(bus, STATESTS, STATESTS_INT_MASK);  in snd_hdac_bus_reset_link()
432 	snd_hdac_bus_enter_link_reset(bus);  in snd_hdac_bus_reset_link()
440 	snd_hdac_bus_exit_link_reset(bus);  in snd_hdac_bus_reset_link()
447 	if (!snd_hdac_chip_readb(bus, GCTL)) {  in snd_hdac_bus_reset_link()
448 		dev_dbg(bus->dev, "controller not ready!\n");  in snd_hdac_bus_reset_link()
453 	if (!bus->codec_mask) {  in snd_hdac_bus_reset_link()
454 		bus->codec_mask = snd_hdac_chip_readw(bus, STATESTS);  in snd_hdac_bus_reset_link()
455 		dev_dbg(bus->dev, "codec_mask = 0x%lx\n", bus->codec_mask);  in snd_hdac_bus_reset_link()
463 static void azx_int_enable(struct hdac_bus *bus)  in azx_int_enable()  argument
466 	snd_hdac_chip_updatel(bus, INTCTL,  in azx_int_enable()
472 static void azx_int_disable(struct hdac_bus *bus)  in azx_int_disable()  argument
477 	list_for_each_entry(azx_dev, &bus->stream_list, list)  in azx_int_disable()
481 	snd_hdac_chip_writel(bus, INTCTL, 0);  in azx_int_disable()
485 static void azx_int_clear(struct hdac_bus *bus)  in azx_int_clear()  argument
490 	list_for_each_entry(azx_dev, &bus->stream_list, list)  in azx_int_clear()
494 	snd_hdac_chip_writew(bus, STATESTS, STATESTS_INT_MASK);  in azx_int_clear()
497 	snd_hdac_chip_writeb(bus, RIRBSTS, RIRB_INT_MASK);  in azx_int_clear()
500 	snd_hdac_chip_writel(bus, INTSTS, AZX_INT_CTRL_EN | AZX_INT_ALL_STREAM);  in azx_int_clear()
505  * @bus: HD-audio core bus
508 bool snd_hdac_bus_init_chip(struct hdac_bus *bus, bool full_reset)  in snd_hdac_bus_init_chip()  argument
510 	if (bus->chip_init)  in snd_hdac_bus_init_chip()
514 	snd_hdac_bus_reset_link(bus, full_reset);  in snd_hdac_bus_init_chip()
517 	azx_int_clear(bus);  in snd_hdac_bus_init_chip()
520 	snd_hdac_bus_init_cmd_io(bus);  in snd_hdac_bus_init_chip()
523 	azx_int_enable(bus);  in snd_hdac_bus_init_chip()
526 	if (bus->use_posbuf && bus->posbuf.addr) {  in snd_hdac_bus_init_chip()
527 		snd_hdac_chip_writel(bus, DPLBASE, (u32)bus->posbuf.addr);  in snd_hdac_bus_init_chip()
528 		snd_hdac_chip_writel(bus, DPUBASE, upper_32_bits(bus->posbuf.addr));  in snd_hdac_bus_init_chip()
531 	bus->chip_init = true;  in snd_hdac_bus_init_chip()
539  * @bus: HD-audio core bus
541 void snd_hdac_bus_stop_chip(struct hdac_bus *bus)  in snd_hdac_bus_stop_chip()  argument
543 	if (!bus->chip_init)  in snd_hdac_bus_stop_chip()
547 	azx_int_disable(bus);  in snd_hdac_bus_stop_chip()
548 	azx_int_clear(bus);  in snd_hdac_bus_stop_chip()
551 	snd_hdac_bus_stop_cmd_io(bus);  in snd_hdac_bus_stop_chip()
554 	if (bus->posbuf.addr) {  in snd_hdac_bus_stop_chip()
555 		snd_hdac_chip_writel(bus, DPLBASE, 0);  in snd_hdac_bus_stop_chip()
556 		snd_hdac_chip_writel(bus, DPUBASE, 0);  in snd_hdac_bus_stop_chip()
559 	bus->chip_init = false;  in snd_hdac_bus_stop_chip()
565  * @bus: HD-audio core bus
571 int snd_hdac_bus_handle_stream_irq(struct hdac_bus *bus, unsigned int status,  in snd_hdac_bus_handle_stream_irq()  argument
579 	list_for_each_entry(azx_dev, &bus->stream_list, list) {  in snd_hdac_bus_handle_stream_irq()
588 				ack(bus, azx_dev);  in snd_hdac_bus_handle_stream_irq()
597  * @bus: HD-audio core bus
602 int snd_hdac_bus_alloc_stream_pages(struct hdac_bus *bus)  in snd_hdac_bus_alloc_stream_pages()  argument
606 	int dma_type = bus->dma_type ? bus->dma_type : SNDRV_DMA_TYPE_DEV;  in snd_hdac_bus_alloc_stream_pages()
609 	list_for_each_entry(s, &bus->stream_list, list) {  in snd_hdac_bus_alloc_stream_pages()
611 		err = snd_dma_alloc_pages(dma_type, bus->dev,  in snd_hdac_bus_alloc_stream_pages()
621 	err = snd_dma_alloc_pages(dma_type, bus->dev,  in snd_hdac_bus_alloc_stream_pages()
622 				  num_streams * 8, &bus->posbuf);  in snd_hdac_bus_alloc_stream_pages()
625 	list_for_each_entry(s, &bus->stream_list, list)  in snd_hdac_bus_alloc_stream_pages()
626 		s->posbuf = (__le32 *)(bus->posbuf.area + s->index * 8);  in snd_hdac_bus_alloc_stream_pages()
629 	return snd_dma_alloc_pages(dma_type, bus->dev, PAGE_SIZE, &bus->rb);  in snd_hdac_bus_alloc_stream_pages()
635  * @bus: HD-audio core bus
637 void snd_hdac_bus_free_stream_pages(struct hdac_bus *bus)  in snd_hdac_bus_free_stream_pages()  argument
641 	list_for_each_entry(s, &bus->stream_list, list) {  in snd_hdac_bus_free_stream_pages()
646 	if (bus->rb.area)  in snd_hdac_bus_free_stream_pages()
647 		snd_dma_free_pages(&bus->rb);  in snd_hdac_bus_free_stream_pages()
648 	if (bus->posbuf.area)  in snd_hdac_bus_free_stream_pages()
649 		snd_dma_free_pages(&bus->posbuf);  in snd_hdac_bus_free_stream_pages()
661 		set_bit(codec->addr, &codec->bus->codec_powered);  in snd_hdac_bus_link_power()
663 		clear_bit(codec->addr, &codec->bus->codec_powered);  in snd_hdac_bus_link_power()