1 // SPDX-License-Identifier: GPL-2.0+
3 // ALSA Soc Audio Layer - I2S core for newer Samsung SoCs.
9 // Copyright (c) 2008, 2007, 2004-2005 Simtec Electronics
21 #include "regs-i2s-v2.h"
22 #include "s3c-i2s-v2.h"
72 static void s3c2412_snd_txctrl(struct s3c_i2sv2_info *i2s, int on)  in s3c2412_snd_txctrl()  argument
74 	void __iomem *regs = i2s->regs;  in s3c2412_snd_txctrl()  local
79 	fic = readl(regs + S3C2412_IISFIC);  in s3c2412_snd_txctrl()
80 	con = readl(regs + S3C2412_IISCON);  in s3c2412_snd_txctrl()
81 	mod = readl(regs + S3C2412_IISMOD);  in s3c2412_snd_txctrl()
102 			dev_err(i2s->dev, "TXEN: Invalid MODE %x in IISMOD\n",  in s3c2412_snd_txctrl()
107 		writel(con, regs + S3C2412_IISCON);  in s3c2412_snd_txctrl()
108 		writel(mod, regs + S3C2412_IISMOD);  in s3c2412_snd_txctrl()
131 			dev_err(i2s->dev, "TXDIS: Invalid MODE %x in IISMOD\n",  in s3c2412_snd_txctrl()
136 		writel(mod, regs + S3C2412_IISMOD);  in s3c2412_snd_txctrl()
137 		writel(con, regs + S3C2412_IISCON);  in s3c2412_snd_txctrl()
140 	fic = readl(regs + S3C2412_IISFIC);  in s3c2412_snd_txctrl()
145 static void s3c2412_snd_rxctrl(struct s3c_i2sv2_info *i2s, int on)  in s3c2412_snd_rxctrl()  argument
147 	void __iomem *regs = i2s->regs;  in s3c2412_snd_rxctrl()  local
152 	fic = readl(regs + S3C2412_IISFIC);  in s3c2412_snd_rxctrl()
153 	con = readl(regs + S3C2412_IISCON);  in s3c2412_snd_rxctrl()
154 	mod = readl(regs + S3C2412_IISMOD);  in s3c2412_snd_rxctrl()
175 			dev_err(i2s->dev, "RXEN: Invalid MODE %x in IISMOD\n",  in s3c2412_snd_rxctrl()
179 		writel(mod, regs + S3C2412_IISMOD);  in s3c2412_snd_rxctrl()
180 		writel(con, regs + S3C2412_IISCON);  in s3c2412_snd_rxctrl()
200 			dev_err(i2s->dev, "RXDIS: Invalid MODE %x in IISMOD\n",  in s3c2412_snd_rxctrl()
204 		writel(con, regs + S3C2412_IISCON);  in s3c2412_snd_rxctrl()
205 		writel(mod, regs + S3C2412_IISMOD);  in s3c2412_snd_rxctrl()
208 	fic = readl(regs + S3C2412_IISFIC);  in s3c2412_snd_rxctrl()
218 static int s3c2412_snd_lrsync(struct s3c_i2sv2_info *i2s)  in s3c2412_snd_lrsync()  argument
225 	while (--loops) {  in s3c2412_snd_lrsync()
226 		iiscon = readl(i2s->regs + S3C2412_IISCON);  in s3c2412_snd_lrsync()
235 		return -ETIMEDOUT;  in s3c2412_snd_lrsync()
242  * Set S3C2412 I2S DAI format
247 	struct s3c_i2sv2_info *i2s = to_info(cpu_dai);  in s3c2412_i2s_set_fmt()  local
252 	iismod = readl(i2s->regs + S3C2412_IISMOD);  in s3c2412_i2s_set_fmt()
257 		i2s->master = 0;  in s3c2412_i2s_set_fmt()
261 		i2s->master = 1;  in s3c2412_i2s_set_fmt()
266 		return -EINVAL;  in s3c2412_i2s_set_fmt()
286 		return -EINVAL;  in s3c2412_i2s_set_fmt()
289 	writel(iismod, i2s->regs + S3C2412_IISMOD);  in s3c2412_i2s_set_fmt()
298 	struct s3c_i2sv2_info *i2s = to_info(dai);  in s3c_i2sv2_hw_params()  local
304 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)  in s3c_i2sv2_hw_params()
305 		dma_data = i2s->dma_playback;  in s3c_i2sv2_hw_params()
307 		dma_data = i2s->dma_capture;  in s3c_i2sv2_hw_params()
312 	iismod = readl(i2s->regs + S3C2412_IISMOD);  in s3c_i2sv2_hw_params()
328 	writel(iismod, i2s->regs + S3C2412_IISMOD);  in s3c_i2sv2_hw_params()
337 	struct s3c_i2sv2_info *i2s = to_info(cpu_dai);  in s3c_i2sv2_set_sysclk()  local
338 	u32 iismod = readl(i2s->regs + S3C2412_IISMOD);  in s3c_i2sv2_set_sysclk()
354 		if (!(i2s->feature & S3C_FEATURE_CDCLKCON))  in s3c_i2sv2_set_sysclk()
355 			return -EINVAL;  in s3c_i2sv2_set_sysclk()
365 			return -EINVAL;  in s3c_i2sv2_set_sysclk()
370 		return -EINVAL;  in s3c_i2sv2_set_sysclk()
373 	writel(iismod, i2s->regs + S3C2412_IISMOD);  in s3c_i2sv2_set_sysclk()
383 	struct s3c_i2sv2_info *i2s = to_info(asoc_rtd_to_cpu(rtd, 0));  in s3c2412_i2s_trigger()  local
384 	int capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE);  in s3c2412_i2s_trigger()
395 		       i2s->regs + S3C2412_IISFIC);  in s3c2412_i2s_trigger()
398 		writel(0x0, i2s->regs + S3C2412_IISFIC);  in s3c2412_i2s_trigger()
402 		if (!i2s->master) {  in s3c2412_i2s_trigger()
403 			ret = s3c2412_snd_lrsync(i2s);  in s3c2412_i2s_trigger()
411 			s3c2412_snd_rxctrl(i2s, 1);  in s3c2412_i2s_trigger()
413 			s3c2412_snd_txctrl(i2s, 1);  in s3c2412_i2s_trigger()
425 			s3c2412_snd_rxctrl(i2s, 0);  in s3c2412_i2s_trigger()
427 			s3c2412_snd_txctrl(i2s, 0);  in s3c2412_i2s_trigger()
432 		ret = -EINVAL;  in s3c2412_i2s_trigger()
446 	struct s3c_i2sv2_info *i2s = to_info(cpu_dai);  in s3c2412_i2s_set_clkdiv()  local
471 			return -EINVAL;  in s3c2412_i2s_set_clkdiv()
474 		reg = readl(i2s->regs + S3C2412_IISMOD);  in s3c2412_i2s_set_clkdiv()
476 		writel(reg | div, i2s->regs + S3C2412_IISMOD);  in s3c2412_i2s_set_clkdiv()
478 		pr_debug("%s: MOD=%08x\n", __func__, readl(i2s->regs + S3C2412_IISMOD));  in s3c2412_i2s_set_clkdiv()
500 			return -EINVAL;  in s3c2412_i2s_set_clkdiv()
503 		reg = readl(i2s->regs + S3C2412_IISMOD);  in s3c2412_i2s_set_clkdiv()
505 		writel(reg | div, i2s->regs + S3C2412_IISMOD);  in s3c2412_i2s_set_clkdiv()
506 		pr_debug("%s: MOD=%08x\n", __func__, readl(i2s->regs + S3C2412_IISMOD));  in s3c2412_i2s_set_clkdiv()
512 			       i2s->regs + S3C2412_IISPSR);  in s3c2412_i2s_set_clkdiv()
514 			writel(0x0, i2s->regs + S3C2412_IISPSR);  in s3c2412_i2s_set_clkdiv()
516 		pr_debug("%s: PSR=%08x\n", __func__, readl(i2s->regs + S3C2412_IISPSR));  in s3c2412_i2s_set_clkdiv()
520 		return -EINVAL;  in s3c2412_i2s_set_clkdiv()
529 	struct s3c_i2sv2_info *i2s = to_info(dai);  in s3c2412_i2s_delay()  local
530 	u32 reg = readl(i2s->regs + S3C2412_IISFIC);  in s3c2412_i2s_delay()
533 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)  in s3c2412_i2s_delay()
543 	struct s3c_i2sv2_info *i2s = to_info(cpu_dai);  in s3c_i2sv2_get_clock()  local
544 	u32 iismod = readl(i2s->regs + S3C2412_IISMOD);  in s3c_i2sv2_get_clock()
547 		return i2s->iis_cclk;  in s3c_i2sv2_get_clock()
549 		return i2s->iis_pclk;  in s3c_i2sv2_get_clock()
590 		deviation = actual - rate;  in s3c_i2sv2_iis_calc_rate()
611 	info->fs_div = best_fs;  in s3c_i2sv2_iis_calc_rate()
612 	info->clk_div = best_div;  in s3c_i2sv2_iis_calc_rate()
619 		    struct s3c_i2sv2_info *i2s)  in s3c_i2sv2_probe()  argument
621 	struct device *dev = dai->dev;  in s3c_i2sv2_probe()
624 	i2s->dev = dev;  in s3c_i2sv2_probe()
626 	/* record our i2s structure for later use in the callbacks */  in s3c_i2sv2_probe()
627 	snd_soc_dai_set_drvdata(dai, i2s);  in s3c_i2sv2_probe()
629 	i2s->iis_pclk = clk_get(dev, "iis");  in s3c_i2sv2_probe()
630 	if (IS_ERR(i2s->iis_pclk)) {  in s3c_i2sv2_probe()
632 		return -ENOENT;  in s3c_i2sv2_probe()
635 	clk_prepare_enable(i2s->iis_pclk);  in s3c_i2sv2_probe()
639 	iismod = readl(i2s->regs + S3C2412_IISMOD);  in s3c_i2sv2_probe()
641 	writel(iismod, i2s->regs + S3C2412_IISMOD);  in s3c_i2sv2_probe()
642 	s3c2412_snd_txctrl(i2s, 0);  in s3c_i2sv2_probe()
643 	s3c2412_snd_rxctrl(i2s, 0);  in s3c_i2sv2_probe()
650 		      struct s3c_i2sv2_info *i2s)  in s3c_i2sv2_cleanup()  argument
652 	clk_disable_unprepare(i2s->iis_pclk);  in s3c_i2sv2_cleanup()
653 	clk_put(i2s->iis_pclk);  in s3c_i2sv2_cleanup()
654 	i2s->iis_pclk = NULL;  in s3c_i2sv2_cleanup()
662 	struct snd_soc_dai_ops *ops = (struct snd_soc_dai_ops *)dai_drv->ops;  in s3c_i2sv2_register_component()
664 	ops->trigger = s3c2412_i2s_trigger;  in s3c_i2sv2_register_component()
665 	if (!ops->hw_params)  in s3c_i2sv2_register_component()
666 		ops->hw_params = s3c_i2sv2_hw_params;  in s3c_i2sv2_register_component()
667 	ops->set_fmt = s3c2412_i2s_set_fmt;  in s3c_i2sv2_register_component()
668 	ops->set_clkdiv = s3c2412_i2s_set_clkdiv;  in s3c_i2sv2_register_component()
669 	ops->set_sysclk = s3c_i2sv2_set_sysclk;  in s3c_i2sv2_register_component()
672 	if (!ops->delay)  in s3c_i2sv2_register_component()
673 		ops->delay = s3c2412_i2s_delay;  in s3c_i2sv2_register_component()