1 // SPDX-License-Identifier: GPL-2.0+
3 // s3c24xx-i2s.c  --  ALSA Soc Audio Layer
8 // Copyright 2004-2005 Simtec Electronics
21 #include "regs-iis.h"
23 #include "s3c24xx-i2s.h"
36 	void __iomem	*regs;  member
51 	iisfcon = readl(s3c24xx_i2s.regs + S3C2410_IISFCON);  in s3c24xx_snd_txctrl()
52 	iiscon  = readl(s3c24xx_i2s.regs + S3C2410_IISCON);  in s3c24xx_snd_txctrl()
53 	iismod  = readl(s3c24xx_i2s.regs + S3C2410_IISMOD);  in s3c24xx_snd_txctrl()
63 		writel(iismod,  s3c24xx_i2s.regs + S3C2410_IISMOD);  in s3c24xx_snd_txctrl()
64 		writel(iisfcon, s3c24xx_i2s.regs + S3C2410_IISFCON);  in s3c24xx_snd_txctrl()
65 		writel(iiscon,  s3c24xx_i2s.regs + S3C2410_IISCON);  in s3c24xx_snd_txctrl()
80 		writel(iiscon,  s3c24xx_i2s.regs + S3C2410_IISCON);  in s3c24xx_snd_txctrl()
81 		writel(iisfcon, s3c24xx_i2s.regs + S3C2410_IISFCON);  in s3c24xx_snd_txctrl()
82 		writel(iismod,  s3c24xx_i2s.regs + S3C2410_IISMOD);  in s3c24xx_snd_txctrl()
94 	iisfcon = readl(s3c24xx_i2s.regs + S3C2410_IISFCON);  in s3c24xx_snd_rxctrl()
95 	iiscon  = readl(s3c24xx_i2s.regs + S3C2410_IISCON);  in s3c24xx_snd_rxctrl()
96 	iismod  = readl(s3c24xx_i2s.regs + S3C2410_IISMOD);  in s3c24xx_snd_rxctrl()
106 		writel(iismod,  s3c24xx_i2s.regs + S3C2410_IISMOD);  in s3c24xx_snd_rxctrl()
107 		writel(iisfcon, s3c24xx_i2s.regs + S3C2410_IISFCON);  in s3c24xx_snd_rxctrl()
108 		writel(iiscon,  s3c24xx_i2s.regs + S3C2410_IISCON);  in s3c24xx_snd_rxctrl()
123 		writel(iisfcon, s3c24xx_i2s.regs + S3C2410_IISFCON);  in s3c24xx_snd_rxctrl()
124 		writel(iiscon,  s3c24xx_i2s.regs + S3C2410_IISCON);  in s3c24xx_snd_rxctrl()
125 		writel(iismod,  s3c24xx_i2s.regs + S3C2410_IISMOD);  in s3c24xx_snd_rxctrl()
141 		iiscon = readl(s3c24xx_i2s.regs + S3C2410_IISCON);  in s3c24xx_snd_lrsync()
145 		if (!timeout--)  in s3c24xx_snd_lrsync()
146 			return -ETIMEDOUT;  in s3c24xx_snd_lrsync()
158 	return (readl(s3c24xx_i2s.regs + S3C2410_IISMOD) & S3C2410_IISMOD_SLAVE) ? 0:1;  in s3c24xx_snd_is_clkmaster()
162  * Set S3C24xx I2S DAI format
169 	iismod = readl(s3c24xx_i2s.regs + S3C2410_IISMOD);  in s3c24xx_i2s_set_fmt()
180 		return -EINVAL;  in s3c24xx_i2s_set_fmt()
191 		return -EINVAL;  in s3c24xx_i2s_set_fmt()
194 	writel(iismod, s3c24xx_i2s.regs + S3C2410_IISMOD);  in s3c24xx_i2s_set_fmt()
210 	iismod = readl(s3c24xx_i2s.regs + S3C2410_IISMOD);  in s3c24xx_i2s_hw_params()
216 		dma_data->addr_width = 1;  in s3c24xx_i2s_hw_params()
220 		dma_data->addr_width = 2;  in s3c24xx_i2s_hw_params()
223 		return -EINVAL;  in s3c24xx_i2s_hw_params()
226 	writel(iismod, s3c24xx_i2s.regs + S3C2410_IISMOD);  in s3c24xx_i2s_hw_params()
247 		if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)  in s3c24xx_i2s_trigger()
256 		if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)  in s3c24xx_i2s_trigger()
262 		ret = -EINVAL;  in s3c24xx_i2s_trigger()
276 	u32 iismod = readl(s3c24xx_i2s.regs + S3C2410_IISMOD);  in s3c24xx_i2s_set_sysclk()
287 		return -EINVAL;  in s3c24xx_i2s_set_sysclk()
290 	writel(iismod, s3c24xx_i2s.regs + S3C2410_IISMOD);  in s3c24xx_i2s_set_sysclk()
304 		reg = readl(s3c24xx_i2s.regs + S3C2410_IISMOD) & ~S3C2410_IISMOD_FS_MASK;  in s3c24xx_i2s_set_clkdiv()
305 		writel(reg | div, s3c24xx_i2s.regs + S3C2410_IISMOD);  in s3c24xx_i2s_set_clkdiv()
308 		reg = readl(s3c24xx_i2s.regs + S3C2410_IISMOD) & ~(S3C2410_IISMOD_384FS);  in s3c24xx_i2s_set_clkdiv()
309 		writel(reg | div, s3c24xx_i2s.regs + S3C2410_IISMOD);  in s3c24xx_i2s_set_clkdiv()
312 		writel(div, s3c24xx_i2s.regs + S3C2410_IISPSR);  in s3c24xx_i2s_set_clkdiv()
313 		reg = readl(s3c24xx_i2s.regs + S3C2410_IISCON);  in s3c24xx_i2s_set_clkdiv()
314 		writel(reg | S3C2410_IISCON_PSCEN, s3c24xx_i2s.regs + S3C2410_IISCON);  in s3c24xx_i2s_set_clkdiv()
317 		return -EINVAL;  in s3c24xx_i2s_set_clkdiv()
339 	s3c24xx_i2s.iis_clk = devm_clk_get(dai->dev, "iis");  in s3c24xx_i2s_probe()
348 	writel(S3C2410_IISCON_IISEN, s3c24xx_i2s.regs + S3C2410_IISCON);  in s3c24xx_i2s_probe()
359 	s3c24xx_i2s.iiscon = readl(s3c24xx_i2s.regs + S3C2410_IISCON);  in s3c24xx_i2s_suspend()
360 	s3c24xx_i2s.iismod = readl(s3c24xx_i2s.regs + S3C2410_IISMOD);  in s3c24xx_i2s_suspend()
361 	s3c24xx_i2s.iisfcon = readl(s3c24xx_i2s.regs + S3C2410_IISFCON);  in s3c24xx_i2s_suspend()
362 	s3c24xx_i2s.iispsr = readl(s3c24xx_i2s.regs + S3C2410_IISPSR);  in s3c24xx_i2s_suspend()
377 	writel(s3c24xx_i2s.iiscon, s3c24xx_i2s.regs + S3C2410_IISCON);  in s3c24xx_i2s_resume()
378 	writel(s3c24xx_i2s.iismod, s3c24xx_i2s.regs + S3C2410_IISMOD);  in s3c24xx_i2s_resume()
379 	writel(s3c24xx_i2s.iisfcon, s3c24xx_i2s.regs + S3C2410_IISFCON);  in s3c24xx_i2s_resume()
380 	writel(s3c24xx_i2s.iispsr, s3c24xx_i2s.regs + S3C2410_IISPSR);  in s3c24xx_i2s_resume()
418 	.name		= "s3c24xx-i2s",
429 	s3c24xx_i2s.regs = devm_ioremap_resource(&pdev->dev, res);  in s3c24xx_iis_dev_probe()
430 	if (IS_ERR(s3c24xx_i2s.regs))  in s3c24xx_iis_dev_probe()
431 		return PTR_ERR(s3c24xx_i2s.regs);  in s3c24xx_iis_dev_probe()
433 	s3c24xx_i2s_pcm_stereo_out.addr = res->start + S3C2410_IISFIFO;  in s3c24xx_iis_dev_probe()
434 	s3c24xx_i2s_pcm_stereo_in.addr = res->start + S3C2410_IISFIFO;  in s3c24xx_iis_dev_probe()
436 	ret = samsung_asoc_dma_platform_register(&pdev->dev, NULL,  in s3c24xx_iis_dev_probe()
439 		dev_err(&pdev->dev, "Failed to register the DMA: %d\n", ret);  in s3c24xx_iis_dev_probe()
443 	ret = devm_snd_soc_register_component(&pdev->dev,  in s3c24xx_iis_dev_probe()
446 		dev_err(&pdev->dev, "Failed to register the DAI\n");  in s3c24xx_iis_dev_probe()
454 		.name = "s3c24xx-iis",
462 MODULE_DESCRIPTION("s3c24xx I2S SoC Interface");
464 MODULE_ALIAS("platform:s3c24xx-iis");