1 // SPDX-License-Identifier: GPL-2.0-only
3  * IMG SPDIF input controller driver
86 	/* Write-only registers */
92 	struct img_spdif_in *spdif = dev_get_drvdata(dev);  in img_spdif_in_runtime_suspend()  local
94 	clk_disable_unprepare(spdif->clk_sys);  in img_spdif_in_runtime_suspend()
101 	struct img_spdif_in *spdif = dev_get_drvdata(dev);  in img_spdif_in_runtime_resume()  local
104 	ret = clk_prepare_enable(spdif->clk_sys);  in img_spdif_in_runtime_resume()
113 static inline void img_spdif_in_writel(struct img_spdif_in *spdif,  in img_spdif_in_writel()  argument
116 	writel(val, spdif->base + reg);  in img_spdif_in_writel()
119 static inline u32 img_spdif_in_readl(struct img_spdif_in *spdif, u32 reg)  in img_spdif_in_readl()  argument
121 	return readl(spdif->base + reg);  in img_spdif_in_readl()
124 static inline void img_spdif_in_aclkgen_writel(struct img_spdif_in *spdif,  in img_spdif_in_aclkgen_writel()  argument
127 	img_spdif_in_writel(spdif, spdif->aclkgen_regs[index],  in img_spdif_in_aclkgen_writel()
131 static int img_spdif_in_check_max_rate(struct img_spdif_in *spdif,  in img_spdif_in_check_max_rate()  argument
139 	freq_t = clk_get_rate(spdif->clk_sys);  in img_spdif_in_check_max_rate()
142 		return -EINVAL;  in img_spdif_in_check_max_rate()
160 		return -EINVAL;  in img_spdif_in_do_clkgen_calc()
165 		return -EINVAL;  in img_spdif_in_do_clkgen_calc()
169 		hld = 4096 - (--nom * (ori - 1));  in img_spdif_in_do_clkgen_calc()
178 static int img_spdif_in_do_clkgen_single(struct img_spdif_in *spdif,  in img_spdif_in_do_clkgen_single()  argument
186 	ret = img_spdif_in_check_max_rate(spdif, rate, &clk_rate);  in img_spdif_in_do_clkgen_single()
199 	spin_lock_irqsave(&spdif->lock, flags);  in img_spdif_in_do_clkgen_single()
201 	if (spdif->active) {  in img_spdif_in_do_clkgen_single()
202 		spin_unlock_irqrestore(&spdif->lock, flags);  in img_spdif_in_do_clkgen_single()
203 		return -EBUSY;  in img_spdif_in_do_clkgen_single()
206 	img_spdif_in_writel(spdif, reg, IMG_SPDIF_IN_CLKGEN);  in img_spdif_in_do_clkgen_single()
208 	spdif->single_freq = rate;  in img_spdif_in_do_clkgen_single()
210 	spin_unlock_irqrestore(&spdif->lock, flags);  in img_spdif_in_do_clkgen_single()
215 static int img_spdif_in_do_clkgen_multi(struct img_spdif_in *spdif,  in img_spdif_in_do_clkgen_multi()  argument
227 	ret = img_spdif_in_check_max_rate(spdif, max_rate, &clk_rate);  in img_spdif_in_do_clkgen_multi()
245 	spin_lock_irqsave(&spdif->lock, flags);  in img_spdif_in_do_clkgen_multi()
247 	if (spdif->active) {  in img_spdif_in_do_clkgen_multi()
248 		spin_unlock_irqrestore(&spdif->lock, flags);  in img_spdif_in_do_clkgen_multi()
249 		return -EBUSY;  in img_spdif_in_do_clkgen_multi()
252 	trk_reg = spdif->trk << IMG_SPDIF_IN_ACLKGEN_TRK_SHIFT;  in img_spdif_in_do_clkgen_multi()
255 		spdif->aclkgen_regs[i] = temp_regs[i] | trk_reg;  in img_spdif_in_do_clkgen_multi()
256 		img_spdif_in_aclkgen_writel(spdif, i);  in img_spdif_in_do_clkgen_multi()
259 	spdif->multi_freq = true;  in img_spdif_in_do_clkgen_multi()
260 	spdif->multi_freqs[0] = multi_freqs[0];  in img_spdif_in_do_clkgen_multi()
261 	spdif->multi_freqs[1] = multi_freqs[1];  in img_spdif_in_do_clkgen_multi()
262 	spdif->multi_freqs[2] = multi_freqs[2];  in img_spdif_in_do_clkgen_multi()
263 	spdif->multi_freqs[3] = multi_freqs[3];  in img_spdif_in_do_clkgen_multi()
265 	spin_unlock_irqrestore(&spdif->lock, flags);  in img_spdif_in_do_clkgen_multi()
273 	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;  in img_spdif_in_iec958_info()
274 	uinfo->count = 1;  in img_spdif_in_iec958_info()
282 	ucontrol->value.iec958.status[0] = 0xff;  in img_spdif_in_get_status_mask()
283 	ucontrol->value.iec958.status[1] = 0xff;  in img_spdif_in_get_status_mask()
284 	ucontrol->value.iec958.status[2] = 0xff;  in img_spdif_in_get_status_mask()
285 	ucontrol->value.iec958.status[3] = 0xff;  in img_spdif_in_get_status_mask()
286 	ucontrol->value.iec958.status[4] = 0xff;  in img_spdif_in_get_status_mask()
295 	struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(cpu_dai);  in img_spdif_in_get_status()  local
298 	reg = img_spdif_in_readl(spdif, IMG_SPDIF_IN_CSL);  in img_spdif_in_get_status()
299 	ucontrol->value.iec958.status[0] = reg & 0xff;  in img_spdif_in_get_status()
300 	ucontrol->value.iec958.status[1] = (reg >> 8) & 0xff;  in img_spdif_in_get_status()
301 	ucontrol->value.iec958.status[2] = (reg >> 16) & 0xff;  in img_spdif_in_get_status()
302 	ucontrol->value.iec958.status[3] = (reg >> 24) & 0xff;  in img_spdif_in_get_status()
303 	reg = img_spdif_in_readl(spdif, IMG_SPDIF_IN_CSH);  in img_spdif_in_get_status()
304 	ucontrol->value.iec958.status[4] = (reg & IMG_SPDIF_IN_CSH_MASK)  in img_spdif_in_get_status()
313 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;  in img_spdif_in_info_multi_freq()
314 	uinfo->count = IMG_SPDIF_IN_NUM_ACLKGEN;  in img_spdif_in_info_multi_freq()
315 	uinfo->value.integer.min = 0;  in img_spdif_in_info_multi_freq()
316 	uinfo->value.integer.max = LONG_MAX;  in img_spdif_in_info_multi_freq()
325 	struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(cpu_dai);  in img_spdif_in_get_multi_freq()  local
328 	spin_lock_irqsave(&spdif->lock, flags);  in img_spdif_in_get_multi_freq()
329 	if (spdif->multi_freq) {  in img_spdif_in_get_multi_freq()
330 		ucontrol->value.integer.value[0] = spdif->multi_freqs[0];  in img_spdif_in_get_multi_freq()
331 		ucontrol->value.integer.value[1] = spdif->multi_freqs[1];  in img_spdif_in_get_multi_freq()
332 		ucontrol->value.integer.value[2] = spdif->multi_freqs[2];  in img_spdif_in_get_multi_freq()
333 		ucontrol->value.integer.value[3] = spdif->multi_freqs[3];  in img_spdif_in_get_multi_freq()
335 		ucontrol->value.integer.value[0] = 0;  in img_spdif_in_get_multi_freq()
336 		ucontrol->value.integer.value[1] = 0;  in img_spdif_in_get_multi_freq()
337 		ucontrol->value.integer.value[2] = 0;  in img_spdif_in_get_multi_freq()
338 		ucontrol->value.integer.value[3] = 0;  in img_spdif_in_get_multi_freq()
340 	spin_unlock_irqrestore(&spdif->lock, flags);  in img_spdif_in_get_multi_freq()
349 	struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(cpu_dai);  in img_spdif_in_set_multi_freq()  local
354 	if ((ucontrol->value.integer.value[0] == 0) &&  in img_spdif_in_set_multi_freq()
355 			(ucontrol->value.integer.value[1] == 0) &&  in img_spdif_in_set_multi_freq()
356 			(ucontrol->value.integer.value[2] == 0) &&  in img_spdif_in_set_multi_freq()
357 			(ucontrol->value.integer.value[3] == 0)) {  in img_spdif_in_set_multi_freq()
360 		multi_freqs[0] = ucontrol->value.integer.value[0];  in img_spdif_in_set_multi_freq()
361 		multi_freqs[1] = ucontrol->value.integer.value[1];  in img_spdif_in_set_multi_freq()
362 		multi_freqs[2] = ucontrol->value.integer.value[2];  in img_spdif_in_set_multi_freq()
363 		multi_freqs[3] = ucontrol->value.integer.value[3];  in img_spdif_in_set_multi_freq()
368 		return img_spdif_in_do_clkgen_multi(spdif, multi_freqs);  in img_spdif_in_set_multi_freq()
370 	spin_lock_irqsave(&spdif->lock, flags);  in img_spdif_in_set_multi_freq()
372 	if (spdif->active) {  in img_spdif_in_set_multi_freq()
373 		spin_unlock_irqrestore(&spdif->lock, flags);  in img_spdif_in_set_multi_freq()
374 		return -EBUSY;  in img_spdif_in_set_multi_freq()
377 	spdif->multi_freq = false;  in img_spdif_in_set_multi_freq()
379 	spin_unlock_irqrestore(&spdif->lock, flags);  in img_spdif_in_set_multi_freq()
387 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;  in img_spdif_in_info_lock_freq()
388 	uinfo->count = 1;  in img_spdif_in_info_lock_freq()
389 	uinfo->value.integer.min = 0;  in img_spdif_in_info_lock_freq()
390 	uinfo->value.integer.max = LONG_MAX;  in img_spdif_in_info_lock_freq()
399 	struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(cpu_dai);  in img_spdif_in_get_lock_freq()  local
404 	spin_lock_irqsave(&spdif->lock, flags);  in img_spdif_in_get_lock_freq()
406 	reg = img_spdif_in_readl(spdif, IMG_SPDIF_IN_STATUS);  in img_spdif_in_get_lock_freq()
408 		if (spdif->multi_freq) {  in img_spdif_in_get_lock_freq()
410 					IMG_SPDIF_IN_STATUS_SAM_SHIFT) - 1;  in img_spdif_in_get_lock_freq()
411 			uc->value.integer.value[0] = spdif->multi_freqs[i];  in img_spdif_in_get_lock_freq()
413 			uc->value.integer.value[0] = spdif->single_freq;  in img_spdif_in_get_lock_freq()
416 		uc->value.integer.value[0] = 0;  in img_spdif_in_get_lock_freq()
419 	spin_unlock_irqrestore(&spdif->lock, flags);  in img_spdif_in_get_lock_freq()
427 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;  in img_spdif_in_info_trk()
428 	uinfo->count = 1;  in img_spdif_in_info_trk()
429 	uinfo->value.integer.min = 0;  in img_spdif_in_info_trk()
430 	uinfo->value.integer.max = 255;  in img_spdif_in_info_trk()
439 	struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(cpu_dai);  in img_spdif_in_get_trk()  local
441 	ucontrol->value.integer.value[0] = spdif->trk;  in img_spdif_in_get_trk()
450 	struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(cpu_dai);  in img_spdif_in_set_trk()  local
455 	spin_lock_irqsave(&spdif->lock, flags);  in img_spdif_in_set_trk()
457 	if (spdif->active) {  in img_spdif_in_set_trk()
458 		spin_unlock_irqrestore(&spdif->lock, flags);  in img_spdif_in_set_trk()
459 		return -EBUSY;  in img_spdif_in_set_trk()
462 	spdif->trk = ucontrol->value.integer.value[0];  in img_spdif_in_set_trk()
464 	reg = img_spdif_in_readl(spdif, IMG_SPDIF_IN_CTL);  in img_spdif_in_set_trk()
466 	reg |= spdif->trk << IMG_SPDIF_IN_CTL_TRK_SHIFT;  in img_spdif_in_set_trk()
467 	img_spdif_in_writel(spdif, reg, IMG_SPDIF_IN_CTL);  in img_spdif_in_set_trk()
470 		spdif->aclkgen_regs[i] = (spdif->aclkgen_regs[i] &  in img_spdif_in_set_trk()
472 			(spdif->trk << IMG_SPDIF_IN_ACLKGEN_TRK_SHIFT);  in img_spdif_in_set_trk()
474 		img_spdif_in_aclkgen_writel(spdif, i);  in img_spdif_in_set_trk()
477 	spin_unlock_irqrestore(&spdif->lock, flags);  in img_spdif_in_set_trk()
485 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;  in img_spdif_in_info_lock()
486 	uinfo->count = 1;  in img_spdif_in_info_lock()
487 	uinfo->value.integer.min = -128;  in img_spdif_in_info_lock()
488 	uinfo->value.integer.max = 127;  in img_spdif_in_info_lock()
497 	struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(cpu_dai);  in img_spdif_in_get_lock_acquire()  local
499 	ucontrol->value.integer.value[0] = spdif->lock_acquire;  in img_spdif_in_get_lock_acquire()
508 	struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(cpu_dai);  in img_spdif_in_set_lock_acquire()  local
512 	spin_lock_irqsave(&spdif->lock, flags);  in img_spdif_in_set_lock_acquire()
514 	if (spdif->active) {  in img_spdif_in_set_lock_acquire()
515 		spin_unlock_irqrestore(&spdif->lock, flags);  in img_spdif_in_set_lock_acquire()
516 		return -EBUSY;  in img_spdif_in_set_lock_acquire()
519 	spdif->lock_acquire = ucontrol->value.integer.value[0];  in img_spdif_in_set_lock_acquire()
521 	reg = img_spdif_in_readl(spdif, IMG_SPDIF_IN_CTL);  in img_spdif_in_set_lock_acquire()
523 	reg |= (spdif->lock_acquire << IMG_SPDIF_IN_CTL_LOCKHI_SHIFT) &  in img_spdif_in_set_lock_acquire()
525 	img_spdif_in_writel(spdif, reg, IMG_SPDIF_IN_CTL);  in img_spdif_in_set_lock_acquire()
527 	spin_unlock_irqrestore(&spdif->lock, flags);  in img_spdif_in_set_lock_acquire()
536 	struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(cpu_dai);  in img_spdif_in_get_lock_release()  local
538 	ucontrol->value.integer.value[0] = spdif->lock_release;  in img_spdif_in_get_lock_release()
547 	struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(cpu_dai);  in img_spdif_in_set_lock_release()  local
551 	spin_lock_irqsave(&spdif->lock, flags);  in img_spdif_in_set_lock_release()
553 	if (spdif->active) {  in img_spdif_in_set_lock_release()
554 		spin_unlock_irqrestore(&spdif->lock, flags);  in img_spdif_in_set_lock_release()
555 		return -EBUSY;  in img_spdif_in_set_lock_release()
558 	spdif->lock_release = ucontrol->value.integer.value[0];  in img_spdif_in_set_lock_release()
560 	reg = img_spdif_in_readl(spdif, IMG_SPDIF_IN_CTL);  in img_spdif_in_set_lock_release()
562 	reg |= (spdif->lock_release << IMG_SPDIF_IN_CTL_LOCKLO_SHIFT) &  in img_spdif_in_set_lock_release()
564 	img_spdif_in_writel(spdif, reg, IMG_SPDIF_IN_CTL);  in img_spdif_in_set_lock_release()
566 	spin_unlock_irqrestore(&spdif->lock, flags);  in img_spdif_in_set_lock_release()
589 		.name = "SPDIF In Multi Frequency Acquire",
598 		.name = "SPDIF In Lock Frequency",
604 		.name = "SPDIF In Lock TRK",
611 		.name = "SPDIF In Lock Acquire Threshold",
618 		.name = "SPDIF In Lock Release Threshold",
629 	struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(dai);  in img_spdif_in_trigger()  local
633 	spin_lock_irqsave(&spdif->lock, flags);  in img_spdif_in_trigger()
639 		reg = img_spdif_in_readl(spdif, IMG_SPDIF_IN_CTL);  in img_spdif_in_trigger()
640 		if (spdif->multi_freq)  in img_spdif_in_trigger()
645 		img_spdif_in_writel(spdif, reg, IMG_SPDIF_IN_CTL);  in img_spdif_in_trigger()
646 		spdif->active = true;  in img_spdif_in_trigger()
651 		reg = img_spdif_in_readl(spdif, IMG_SPDIF_IN_CTL);  in img_spdif_in_trigger()
653 		img_spdif_in_writel(spdif, reg, IMG_SPDIF_IN_CTL);  in img_spdif_in_trigger()
654 		spdif->active = false;  in img_spdif_in_trigger()
657 		ret = -EINVAL;  in img_spdif_in_trigger()
660 	spin_unlock_irqrestore(&spdif->lock, flags);  in img_spdif_in_trigger()
668 	struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(dai);  in img_spdif_in_hw_params()  local
677 		return -EINVAL;  in img_spdif_in_hw_params()
680 		return -EINVAL;  in img_spdif_in_hw_params()
682 	return img_spdif_in_do_clkgen_single(spdif, rate);  in img_spdif_in_hw_params()
687 	struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(dai);  in img_spdif_in_dai_probe()  local
689 	snd_soc_dai_init_dma_data(dai, NULL, &spdif->dma_data);  in img_spdif_in_dai_probe()
714 	.name = "img-spdif-in",
720 	struct img_spdif_in *spdif;  in img_spdif_in_probe()  local
726 	struct device *dev = &pdev->dev;  in img_spdif_in_probe()
728 	spdif = devm_kzalloc(&pdev->dev, sizeof(*spdif), GFP_KERNEL);  in img_spdif_in_probe()
729 	if (!spdif)  in img_spdif_in_probe()
730 		return -ENOMEM;  in img_spdif_in_probe()
732 	platform_set_drvdata(pdev, spdif);  in img_spdif_in_probe()
734 	spdif->dev = &pdev->dev;  in img_spdif_in_probe()
740 	spdif->base = base;  in img_spdif_in_probe()
742 	spdif->clk_sys = devm_clk_get(dev, "sys");  in img_spdif_in_probe()
743 	if (IS_ERR(spdif->clk_sys))  in img_spdif_in_probe()
744 		return dev_err_probe(dev, PTR_ERR(spdif->clk_sys),  in img_spdif_in_probe()
747 	pm_runtime_enable(&pdev->dev);  in img_spdif_in_probe()
748 	if (!pm_runtime_enabled(&pdev->dev)) {  in img_spdif_in_probe()
749 		ret = img_spdif_in_runtime_resume(&pdev->dev);  in img_spdif_in_probe()
753 	ret = pm_runtime_resume_and_get(&pdev->dev);  in img_spdif_in_probe()
757 	rst = devm_reset_control_get_exclusive(&pdev->dev, "rst");  in img_spdif_in_probe()
759 		if (PTR_ERR(rst) == -EPROBE_DEFER) {  in img_spdif_in_probe()
760 			ret = -EPROBE_DEFER;  in img_spdif_in_probe()
764 		img_spdif_in_writel(spdif, IMG_SPDIF_IN_SOFT_RESET_MASK,  in img_spdif_in_probe()
766 		img_spdif_in_writel(spdif, 0, IMG_SPDIF_IN_SOFT_RESET);  in img_spdif_in_probe()
772 	spin_lock_init(&spdif->lock);  in img_spdif_in_probe()
774 	spdif->dma_data.addr = res->start + IMG_SPDIF_IN_RX_FIFO_OFFSET;  in img_spdif_in_probe()
775 	spdif->dma_data.addr_width = 4;  in img_spdif_in_probe()
776 	spdif->dma_data.maxburst = 4;  in img_spdif_in_probe()
777 	spdif->trk = 0x80;  in img_spdif_in_probe()
778 	spdif->lock_acquire = 4;  in img_spdif_in_probe()
779 	spdif->lock_release = -128;  in img_spdif_in_probe()
781 	reg = (spdif->lock_acquire << IMG_SPDIF_IN_CTL_LOCKHI_SHIFT) &  in img_spdif_in_probe()
783 	reg |= (spdif->lock_release << IMG_SPDIF_IN_CTL_LOCKLO_SHIFT) &  in img_spdif_in_probe()
785 	reg |= (spdif->trk << IMG_SPDIF_IN_CTL_TRK_SHIFT) &  in img_spdif_in_probe()
787 	img_spdif_in_writel(spdif, reg, IMG_SPDIF_IN_CTL);  in img_spdif_in_probe()
789 	pm_runtime_put(&pdev->dev);  in img_spdif_in_probe()
791 	ret = devm_snd_soc_register_component(&pdev->dev,  in img_spdif_in_probe()
796 	ret = devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0);  in img_spdif_in_probe()
803 	pm_runtime_put(&pdev->dev);  in img_spdif_in_probe()
805 	if (!pm_runtime_enabled(&pdev->dev))  in img_spdif_in_probe()
806 		img_spdif_in_runtime_suspend(&pdev->dev);  in img_spdif_in_probe()
808 	pm_runtime_disable(&pdev->dev);  in img_spdif_in_probe()
815 	pm_runtime_disable(&pdev->dev);  in img_spdif_in_dev_remove()
816 	if (!pm_runtime_status_suspended(&pdev->dev))  in img_spdif_in_dev_remove()
817 		img_spdif_in_runtime_suspend(&pdev->dev);  in img_spdif_in_dev_remove()
823 	struct img_spdif_in *spdif = dev_get_drvdata(dev);  in img_spdif_in_suspend()  local
832 	spdif->suspend_clkgen = img_spdif_in_readl(spdif, IMG_SPDIF_IN_CLKGEN);  in img_spdif_in_suspend()
833 	spdif->suspend_ctl = img_spdif_in_readl(spdif, IMG_SPDIF_IN_CTL);  in img_spdif_in_suspend()
842 	struct img_spdif_in *spdif = dev_get_drvdata(dev);  in img_spdif_in_resume()  local
850 		img_spdif_in_aclkgen_writel(spdif, i);  in img_spdif_in_resume()
852 	img_spdif_in_writel(spdif, spdif->suspend_clkgen, IMG_SPDIF_IN_CLKGEN);  in img_spdif_in_resume()
853 	img_spdif_in_writel(spdif, spdif->suspend_ctl, IMG_SPDIF_IN_CTL);  in img_spdif_in_resume()
863 	{ .compatible = "img,spdif-in" },
876 		.name = "img-spdif-in",
886 MODULE_DESCRIPTION("IMG SPDIF Input driver");