1 /* ALSA Soc Audio Layer - I2S core for newer Samsung SoCs.
25 #include "regs-i2s-v2.h"
26 #include "s3c-i2s-v2.h"
76 static void s3c2412_snd_txctrl(struct s3c_i2sv2_info *i2s, int on)  in s3c2412_snd_txctrl()  argument
78 	void __iomem *regs = i2s->regs;  in s3c2412_snd_txctrl()
106 			dev_err(i2s->dev, "TXEN: Invalid MODE %x in IISMOD\n",  in s3c2412_snd_txctrl()
135 			dev_err(i2s->dev, "TXDIS: Invalid MODE %x in IISMOD\n",  in s3c2412_snd_txctrl()
149 static void s3c2412_snd_rxctrl(struct s3c_i2sv2_info *i2s, int on)  in s3c2412_snd_rxctrl()  argument
151 	void __iomem *regs = i2s->regs;  in s3c2412_snd_rxctrl()
179 			dev_err(i2s->dev, "RXEN: Invalid MODE %x in IISMOD\n",  in s3c2412_snd_rxctrl()
204 			dev_err(i2s->dev, "RXDIS: Invalid MODE %x in IISMOD\n",  in s3c2412_snd_rxctrl()
222 static int s3c2412_snd_lrsync(struct s3c_i2sv2_info *i2s)  in s3c2412_snd_lrsync()  argument
230 		iiscon = readl(i2s->regs + S3C2412_IISCON);  in s3c2412_snd_lrsync()
246  * Set S3C2412 I2S DAI format
251 	struct s3c_i2sv2_info *i2s = to_info(cpu_dai);  in s3c2412_i2s_set_fmt()  local
256 	iismod = readl(i2s->regs + S3C2412_IISMOD);  in s3c2412_i2s_set_fmt()
261 		i2s->master = 0;  in s3c2412_i2s_set_fmt()
265 		i2s->master = 1;  in s3c2412_i2s_set_fmt()
293 	writel(iismod, i2s->regs + S3C2412_IISMOD);  in s3c2412_i2s_set_fmt()
302 	struct s3c_i2sv2_info *i2s = to_info(dai);  in s3c_i2sv2_hw_params()  local
309 		dma_data = i2s->dma_playback;  in s3c_i2sv2_hw_params()
311 		dma_data = i2s->dma_capture;  in s3c_i2sv2_hw_params()
316 	iismod = readl(i2s->regs + S3C2412_IISMOD);  in s3c_i2sv2_hw_params()
332 	writel(iismod, i2s->regs + S3C2412_IISMOD);  in s3c_i2sv2_hw_params()
341 	struct s3c_i2sv2_info *i2s = to_info(cpu_dai);  in s3c_i2sv2_set_sysclk()  local
342 	u32 iismod = readl(i2s->regs + S3C2412_IISMOD);  in s3c_i2sv2_set_sysclk()
358 		if (!(i2s->feature & S3C_FEATURE_CDCLKCON))  in s3c_i2sv2_set_sysclk()
377 	writel(iismod, i2s->regs + S3C2412_IISMOD);  in s3c_i2sv2_set_sysclk()
387 	struct s3c_i2sv2_info *i2s = to_info(rtd->cpu_dai);  in s3c2412_i2s_trigger()  local
399 		       i2s->regs + S3C2412_IISFIC);  in s3c2412_i2s_trigger()
402 		writel(0x0, i2s->regs + S3C2412_IISFIC);  in s3c2412_i2s_trigger()
406 		if (!i2s->master) {  in s3c2412_i2s_trigger()
407 			ret = s3c2412_snd_lrsync(i2s);  in s3c2412_i2s_trigger()
415 			s3c2412_snd_rxctrl(i2s, 1);  in s3c2412_i2s_trigger()
417 			s3c2412_snd_txctrl(i2s, 1);  in s3c2412_i2s_trigger()
429 			s3c2412_snd_rxctrl(i2s, 0);  in s3c2412_i2s_trigger()
431 			s3c2412_snd_txctrl(i2s, 0);  in s3c2412_i2s_trigger()
450 	struct s3c_i2sv2_info *i2s = to_info(cpu_dai);  in s3c2412_i2s_set_clkdiv()  local
478 		reg = readl(i2s->regs + S3C2412_IISMOD);  in s3c2412_i2s_set_clkdiv()
480 		writel(reg | div, i2s->regs + S3C2412_IISMOD);  in s3c2412_i2s_set_clkdiv()
482 		pr_debug("%s: MOD=%08x\n", __func__, readl(i2s->regs + S3C2412_IISMOD));  in s3c2412_i2s_set_clkdiv()
507 		reg = readl(i2s->regs + S3C2412_IISMOD);  in s3c2412_i2s_set_clkdiv()
509 		writel(reg | div, i2s->regs + S3C2412_IISMOD);  in s3c2412_i2s_set_clkdiv()
510 		pr_debug("%s: MOD=%08x\n", __func__, readl(i2s->regs + S3C2412_IISMOD));  in s3c2412_i2s_set_clkdiv()
516 			       i2s->regs + S3C2412_IISPSR);  in s3c2412_i2s_set_clkdiv()
518 			writel(0x0, i2s->regs + S3C2412_IISPSR);  in s3c2412_i2s_set_clkdiv()
520 		pr_debug("%s: PSR=%08x\n", __func__, readl(i2s->regs + S3C2412_IISPSR));  in s3c2412_i2s_set_clkdiv()
533 	struct s3c_i2sv2_info *i2s = to_info(dai);  in s3c2412_i2s_delay()  local
534 	u32 reg = readl(i2s->regs + S3C2412_IISFIC);  in s3c2412_i2s_delay()
547 	struct s3c_i2sv2_info *i2s = to_info(cpu_dai);  in s3c_i2sv2_get_clock()  local
548 	u32 iismod = readl(i2s->regs + S3C2412_IISMOD);  in s3c_i2sv2_get_clock()
551 		return i2s->iis_cclk;  in s3c_i2sv2_get_clock()
553 		return i2s->iis_pclk;  in s3c_i2sv2_get_clock()
623 		    struct s3c_i2sv2_info *i2s,  in s3c_i2sv2_probe()  argument
629 	i2s->dev = dev;  in s3c_i2sv2_probe()
631 	/* record our i2s structure for later use in the callbacks */  in s3c_i2sv2_probe()
632 	snd_soc_dai_set_drvdata(dai, i2s);  in s3c_i2sv2_probe()
634 	i2s->iis_pclk = clk_get(dev, "iis");  in s3c_i2sv2_probe()
635 	if (IS_ERR(i2s->iis_pclk)) {  in s3c_i2sv2_probe()
640 	clk_prepare_enable(i2s->iis_pclk);  in s3c_i2sv2_probe()
644 	iismod = readl(i2s->regs + S3C2412_IISMOD);  in s3c_i2sv2_probe()
646 	writel(iismod, i2s->regs + S3C2412_IISMOD);  in s3c_i2sv2_probe()
647 	s3c2412_snd_txctrl(i2s, 0);  in s3c_i2sv2_probe()
648 	s3c2412_snd_rxctrl(i2s, 0);  in s3c_i2sv2_probe()
655 		      struct s3c_i2sv2_info *i2s)  in s3c_i2sv2_cleanup()  argument
657 	clk_disable_unprepare(i2s->iis_pclk);  in s3c_i2sv2_cleanup()
658 	clk_put(i2s->iis_pclk);  in s3c_i2sv2_cleanup()
659 	i2s->iis_pclk = NULL;  in s3c_i2sv2_cleanup()
666 	struct s3c_i2sv2_info *i2s = to_info(dai);  in s3c2412_i2s_suspend()  local
670 		i2s->suspend_iismod = readl(i2s->regs + S3C2412_IISMOD);  in s3c2412_i2s_suspend()
671 		i2s->suspend_iiscon = readl(i2s->regs + S3C2412_IISCON);  in s3c2412_i2s_suspend()
672 		i2s->suspend_iispsr = readl(i2s->regs + S3C2412_IISPSR);  in s3c2412_i2s_suspend()
676 		iismod = readl(i2s->regs + S3C2412_IISMOD);  in s3c2412_i2s_suspend()
693 	struct s3c_i2sv2_info *i2s = to_info(dai);  in s3c2412_i2s_resume()  local
696 		dai->active, i2s->suspend_iismod, i2s->suspend_iiscon);  in s3c2412_i2s_resume()
699 		writel(i2s->suspend_iiscon, i2s->regs + S3C2412_IISCON);  in s3c2412_i2s_resume()
700 		writel(i2s->suspend_iismod, i2s->regs + S3C2412_IISMOD);  in s3c2412_i2s_resume()
701 		writel(i2s->suspend_iispsr, i2s->regs + S3C2412_IISPSR);  in s3c2412_i2s_resume()
704 		       i2s->regs + S3C2412_IISFIC);  in s3c2412_i2s_resume()
707 		writel(0x0, i2s->regs + S3C2412_IISFIC);  in s3c2412_i2s_resume()