18 #include "spdif.h"
71  * @pclk: The peri-clock pointer for spdif master operation.
105 static void spdif_snd_txctrl(struct samsung_spdif_info *spdif, int on)  in spdif_snd_txctrl()  argument
107 	void __iomem *regs = spdif->regs;  in spdif_snd_txctrl()
110 	dev_dbg(spdif->dev, "Entered %s\n", __func__);  in spdif_snd_txctrl()
122 	struct samsung_spdif_info *spdif = to_info(cpu_dai);  in spdif_set_sysclk()  local
125 	dev_dbg(spdif->dev, "Entered %s\n", __func__);  in spdif_set_sysclk()
127 	clkcon = readl(spdif->regs + CLKCON);  in spdif_set_sysclk()
134 	writel(clkcon, spdif->regs + CLKCON);  in spdif_set_sysclk()
136 	spdif->clk_rate = freq;  in spdif_set_sysclk()
145 	struct samsung_spdif_info *spdif = to_info(snd_soc_rtd_to_cpu(rtd, 0));  in spdif_trigger()  local
148 	dev_dbg(spdif->dev, "Entered %s\n", __func__);  in spdif_trigger()
154 		spin_lock_irqsave(&spdif->lock, flags);  in spdif_trigger()
155 		spdif_snd_txctrl(spdif, 1);  in spdif_trigger()
156 		spin_unlock_irqrestore(&spdif->lock, flags);  in spdif_trigger()
161 		spin_lock_irqsave(&spdif->lock, flags);  in spdif_trigger()
162 		spdif_snd_txctrl(spdif, 0);  in spdif_trigger()
163 		spin_unlock_irqrestore(&spdif->lock, flags);  in spdif_trigger()
181 	struct samsung_spdif_info *spdif = to_info(snd_soc_rtd_to_cpu(rtd, 0));  in spdif_hw_params()  local
182 	void __iomem *regs = spdif->regs;  in spdif_hw_params()
188 	dev_dbg(spdif->dev, "Entered %s\n", __func__);  in spdif_hw_params()
191 		dma_data = spdif->dma_playback;  in spdif_hw_params()
193 		dev_err(spdif->dev, "Capture is not supported\n");  in spdif_hw_params()
199 	spin_lock_irqsave(&spdif->lock, flags);  in spdif_hw_params()
216 		dev_err(spdif->dev, "Unsupported data size.\n");  in spdif_hw_params()
220 	ratio = spdif->clk_rate / params_rate(params);  in spdif_hw_params()
225 		dev_err(spdif->dev, "Invalid clock ratio %ld/%d\n",  in spdif_hw_params()
226 				spdif->clk_rate, params_rate(params));  in spdif_hw_params()
258 		dev_err(spdif->dev, "Invalid sampling rate %d\n",  in spdif_hw_params()
271 	spin_unlock_irqrestore(&spdif->lock, flags);  in spdif_hw_params()
275 	spin_unlock_irqrestore(&spdif->lock, flags);  in spdif_hw_params()
283 	struct samsung_spdif_info *spdif = to_info(snd_soc_rtd_to_cpu(rtd, 0));  in spdif_shutdown()  local
284 	void __iomem *regs = spdif->regs;  in spdif_shutdown()
287 	dev_dbg(spdif->dev, "Entered %s\n", __func__);  in spdif_shutdown()
301 	struct samsung_spdif_info *spdif = component_to_info(component);  in spdif_suspend()  local
302 	u32 con = spdif->saved_con;  in spdif_suspend()
304 	dev_dbg(spdif->dev, "Entered %s\n", __func__);  in spdif_suspend()
306 	spdif->saved_clkcon = readl(spdif->regs	+ CLKCON) & CLKCTL_MASK;  in spdif_suspend()
307 	spdif->saved_con = readl(spdif->regs + CON) & CON_MASK;  in spdif_suspend()
308 	spdif->saved_cstas = readl(spdif->regs + CSTAS) & CSTAS_MASK;  in spdif_suspend()
310 	writel(con | CON_SW_RESET, spdif->regs + CON);  in spdif_suspend()
318 	struct samsung_spdif_info *spdif = component_to_info(component);  in spdif_resume()  local
320 	dev_dbg(spdif->dev, "Entered %s\n", __func__);  in spdif_resume()
322 	writel(spdif->saved_clkcon, spdif->regs	+ CLKCON);  in spdif_resume()
323 	writel(spdif->saved_con, spdif->regs + CON);  in spdif_resume()
324 	writel(spdif->saved_cstas, spdif->regs + CSTAS);  in spdif_resume()
341 	.name = "samsung-spdif",
355 	.name			= "samsung-spdif",
365 	struct samsung_spdif_info *spdif;  in spdif_probe()  local
385 	spdif = &spdif_info;  in spdif_probe()
386 	spdif->dev = &pdev->dev;  in spdif_probe()
388 	spin_lock_init(&spdif->lock);  in spdif_probe()
390 	spdif->pclk = devm_clk_get(&pdev->dev, "spdif");  in spdif_probe()
391 	if (IS_ERR(spdif->pclk)) {  in spdif_probe()
396 	ret = clk_prepare_enable(spdif->pclk);  in spdif_probe()
400 	spdif->sclk = devm_clk_get(&pdev->dev, "sclk_spdif");  in spdif_probe()
401 	if (IS_ERR(spdif->sclk)) {  in spdif_probe()
406 	ret = clk_prepare_enable(spdif->sclk);  in spdif_probe()
412 				resource_size(mem_res), "samsung-spdif")) {  in spdif_probe()
418 	spdif->regs = ioremap(mem_res->start, 0x100);  in spdif_probe()
419 	if (spdif->regs == NULL) {  in spdif_probe()
432 	spdif->dma_playback = &spdif_stereo_out;  in spdif_probe()
441 	dev_set_drvdata(&pdev->dev, spdif);  in spdif_probe()
452 	iounmap(spdif->regs);  in spdif_probe()
456 	clk_disable_unprepare(spdif->sclk);  in spdif_probe()
458 	clk_disable_unprepare(spdif->pclk);  in spdif_probe()
465 	struct samsung_spdif_info *spdif = &spdif_info;  in spdif_remove()  local
468 	iounmap(spdif->regs);  in spdif_remove()
473 	clk_disable_unprepare(spdif->sclk);  in spdif_remove()
474 	clk_disable_unprepare(spdif->pclk);  in spdif_remove()
481 		.name	= "samsung-spdif",
490 MODULE_ALIAS("platform:samsung-spdif");