Lines Matching full:i2s
3 * STM32 ALSA SoC Digital Audio Interface (I2S) driver.
141 /* Registers below apply to I2S version 1.1 and more */
200 * struct stm32_i2s_data - private data of I2S
201 * @regmap_conf: I2S register map configuration pointer
202 * @regmap: I2S register map pointer
208 * @i2sclk: kernel clock feeding the I2S clock generator
210 * @x8kclk: I2S parent clock for sampling frequencies multiple of 8kHz
211 * @x11kclk: I2S parent clock for sampling frequencies multiple of 11kHz
213 * @phys_addr: I2S registers physical base address
218 * @refcount: keep count of opened streams on I2S
245 struct stm32_i2s_data *i2s = (struct stm32_i2s_data *)devid; in stm32_i2s_isr() local
246 struct platform_device *pdev = i2s->pdev; in stm32_i2s_isr()
251 regmap_read(i2s->regmap, STM32_I2S_SR_REG, &sr); in stm32_i2s_isr()
252 regmap_read(i2s->regmap, STM32_I2S_IER_REG, &ier); in stm32_i2s_isr()
261 regmap_write_bits(i2s->regmap, STM32_I2S_IFCR_REG, in stm32_i2s_isr()
277 spin_lock(&i2s->irq_lock); in stm32_i2s_isr()
278 if (err && i2s->substream) in stm32_i2s_isr()
279 snd_pcm_stop_xrun(i2s->substream); in stm32_i2s_isr()
280 spin_unlock(&i2s->irq_lock); in stm32_i2s_isr()
334 struct stm32_i2s_data *i2s = snd_soc_dai_get_drvdata(cpu_dai); in stm32_i2s_set_dai_fmt() local
358 /* DSP_B not mapped on I2S PCM long format. 1 bit offset does not fit */ in stm32_i2s_set_dai_fmt()
388 i2s->ms_flg = I2S_MS_SLAVE; in stm32_i2s_set_dai_fmt()
391 i2s->ms_flg = I2S_MS_MASTER; in stm32_i2s_set_dai_fmt()
399 i2s->fmt = fmt; in stm32_i2s_set_dai_fmt()
400 return regmap_update_bits(i2s->regmap, STM32_I2S_CGFR_REG, in stm32_i2s_set_dai_fmt()
407 struct stm32_i2s_data *i2s = snd_soc_dai_get_drvdata(cpu_dai); in stm32_i2s_set_sysclk() local
409 dev_dbg(cpu_dai->dev, "I2S MCLK frequency is %uHz\n", freq); in stm32_i2s_set_sysclk()
411 if ((dir == SND_SOC_CLOCK_OUT) && STM32_I2S_IS_MASTER(i2s)) { in stm32_i2s_set_sysclk()
412 i2s->mclk_rate = freq; in stm32_i2s_set_sysclk()
415 return regmap_update_bits(i2s->regmap, STM32_I2S_CGFR_REG, in stm32_i2s_set_sysclk()
425 struct stm32_i2s_data *i2s = snd_soc_dai_get_drvdata(cpu_dai); in stm32_i2s_configure_clock() local
434 clk_set_parent(i2s->i2sclk, i2s->x11kclk); in stm32_i2s_configure_clock()
436 clk_set_parent(i2s->i2sclk, i2s->x8kclk); in stm32_i2s_configure_clock()
437 i2s_clock_rate = clk_get_rate(i2s->i2sclk); in stm32_i2s_configure_clock()
441 * i2s mode : mclk_ratio = 256 in stm32_i2s_configure_clock()
445 * i2s mode : div = i2s_clk / (mclk_ratio * ws) in stm32_i2s_configure_clock()
448 * i2s mode : div = i2s_clk / (nb_bits x ws) in stm32_i2s_configure_clock()
451 if (i2s->mclk_rate) { in stm32_i2s_configure_clock()
452 tmp = DIV_ROUND_CLOSEST(i2s_clock_rate, i2s->mclk_rate); in stm32_i2s_configure_clock()
455 if ((i2s->fmt & SND_SOC_DAIFMT_FORMAT_MASK) == in stm32_i2s_configure_clock()
460 ret = regmap_read(i2s->regmap, STM32_I2S_CGFR_REG, &cgfr); in stm32_i2s_configure_clock()
478 dev_dbg(cpu_dai->dev, "I2S clk: %ld, SCLK: %d\n", in stm32_i2s_configure_clock()
491 ret = regmap_update_bits(i2s->regmap, STM32_I2S_CGFR_REG, in stm32_i2s_configure_clock()
497 return regmap_update_bits(i2s->regmap, STM32_I2S_CFG2_REG, in stm32_i2s_configure_clock()
505 struct stm32_i2s_data *i2s = snd_soc_dai_get_drvdata(cpu_dai); in stm32_i2s_configure() local
526 if (STM32_I2S_IS_SLAVE(i2s)) { in stm32_i2s_configure()
537 ret = regmap_update_bits(i2s->regmap, STM32_I2S_CGFR_REG, in stm32_i2s_configure()
545 return regmap_update_bits(i2s->regmap, STM32_I2S_CFG1_REG, in stm32_i2s_configure()
552 struct stm32_i2s_data *i2s = snd_soc_dai_get_drvdata(cpu_dai); in stm32_i2s_startup() local
556 spin_lock_irqsave(&i2s->irq_lock, flags); in stm32_i2s_startup()
557 i2s->substream = substream; in stm32_i2s_startup()
558 spin_unlock_irqrestore(&i2s->irq_lock, flags); in stm32_i2s_startup()
560 if ((i2s->fmt & SND_SOC_DAIFMT_FORMAT_MASK) != SND_SOC_DAIFMT_DSP_A) in stm32_i2s_startup()
564 ret = clk_prepare_enable(i2s->i2sclk); in stm32_i2s_startup()
570 return regmap_write_bits(i2s->regmap, STM32_I2S_IFCR_REG, in stm32_i2s_startup()
578 struct stm32_i2s_data *i2s = snd_soc_dai_get_drvdata(cpu_dai); in stm32_i2s_hw_params() local
587 if (STM32_I2S_IS_MASTER(i2s)) in stm32_i2s_hw_params()
596 struct stm32_i2s_data *i2s = snd_soc_dai_get_drvdata(cpu_dai); in stm32_i2s_trigger() local
605 /* Enable i2s */ in stm32_i2s_trigger()
606 dev_dbg(cpu_dai->dev, "start I2S %s\n", in stm32_i2s_trigger()
610 regmap_update_bits(i2s->regmap, STM32_I2S_CFG1_REG, in stm32_i2s_trigger()
613 ret = regmap_update_bits(i2s->regmap, STM32_I2S_CR1_REG, in stm32_i2s_trigger()
616 dev_err(cpu_dai->dev, "Error %d enabling I2S\n", ret); in stm32_i2s_trigger()
620 ret = regmap_write_bits(i2s->regmap, STM32_I2S_CR1_REG, in stm32_i2s_trigger()
623 dev_err(cpu_dai->dev, "Error %d starting I2S\n", ret); in stm32_i2s_trigger()
627 regmap_write_bits(i2s->regmap, STM32_I2S_IFCR_REG, in stm32_i2s_trigger()
630 spin_lock(&i2s->lock_fd); in stm32_i2s_trigger()
631 i2s->refcount++; in stm32_i2s_trigger()
637 if (STM32_I2S_IS_MASTER(i2s) && i2s->refcount == 1) in stm32_i2s_trigger()
639 regmap_write(i2s->regmap, in stm32_i2s_trigger()
642 spin_unlock(&i2s->lock_fd); in stm32_i2s_trigger()
644 if (STM32_I2S_IS_SLAVE(i2s)) in stm32_i2s_trigger()
647 regmap_update_bits(i2s->regmap, STM32_I2S_IER_REG, ier, ier); in stm32_i2s_trigger()
652 dev_dbg(cpu_dai->dev, "stop I2S %s\n", in stm32_i2s_trigger()
656 regmap_update_bits(i2s->regmap, STM32_I2S_IER_REG, in stm32_i2s_trigger()
660 regmap_update_bits(i2s->regmap, STM32_I2S_IER_REG, in stm32_i2s_trigger()
664 spin_lock(&i2s->lock_fd); in stm32_i2s_trigger()
665 i2s->refcount--; in stm32_i2s_trigger()
666 if (i2s->refcount) { in stm32_i2s_trigger()
667 spin_unlock(&i2s->lock_fd); in stm32_i2s_trigger()
671 ret = regmap_update_bits(i2s->regmap, STM32_I2S_CR1_REG, in stm32_i2s_trigger()
674 dev_err(cpu_dai->dev, "Error %d disabling I2S\n", ret); in stm32_i2s_trigger()
675 spin_unlock(&i2s->lock_fd); in stm32_i2s_trigger()
678 spin_unlock(&i2s->lock_fd); in stm32_i2s_trigger()
681 regmap_update_bits(i2s->regmap, STM32_I2S_CFG1_REG, in stm32_i2s_trigger()
694 struct stm32_i2s_data *i2s = snd_soc_dai_get_drvdata(cpu_dai); in stm32_i2s_shutdown() local
697 regmap_update_bits(i2s->regmap, STM32_I2S_CGFR_REG, in stm32_i2s_shutdown()
700 clk_disable_unprepare(i2s->i2sclk); in stm32_i2s_shutdown()
702 spin_lock_irqsave(&i2s->irq_lock, flags); in stm32_i2s_shutdown()
703 i2s->substream = NULL; in stm32_i2s_shutdown()
704 spin_unlock_irqrestore(&i2s->irq_lock, flags); in stm32_i2s_shutdown()
709 struct stm32_i2s_data *i2s = dev_get_drvdata(cpu_dai->dev); in stm32_i2s_dai_probe() local
710 struct snd_dmaengine_dai_dma_data *dma_data_tx = &i2s->dma_data_tx; in stm32_i2s_dai_probe()
711 struct snd_dmaengine_dai_dma_data *dma_data_rx = &i2s->dma_data_rx; in stm32_i2s_dai_probe()
715 dma_data_tx->addr = (dma_addr_t)(i2s->phys_addr) + STM32_I2S_TXDR_REG; in stm32_i2s_dai_probe()
718 dma_data_rx->addr = (dma_addr_t)(i2s->phys_addr) + STM32_I2S_RXDR_REG; in stm32_i2s_dai_probe()
764 .name = "stm32-i2s",
779 struct stm32_i2s_data *i2s) in stm32_i2s_dais_init() argument
793 i2s->dai_drv = dai_ptr; in stm32_i2s_dais_init()
800 .compatible = "st,stm32h7-i2s",
807 struct stm32_i2s_data *i2s) in stm32_i2s_parse_dt() argument
820 i2s->regmap_conf = (const struct regmap_config *)of_id->data; in stm32_i2s_parse_dt()
825 i2s->base = devm_ioremap_resource(&pdev->dev, res); in stm32_i2s_parse_dt()
826 if (IS_ERR(i2s->base)) in stm32_i2s_parse_dt()
827 return PTR_ERR(i2s->base); in stm32_i2s_parse_dt()
829 i2s->phys_addr = res->start; in stm32_i2s_parse_dt()
832 i2s->pclk = devm_clk_get(&pdev->dev, "pclk"); in stm32_i2s_parse_dt()
833 if (IS_ERR(i2s->pclk)) { in stm32_i2s_parse_dt()
834 if (PTR_ERR(i2s->pclk) != -EPROBE_DEFER) in stm32_i2s_parse_dt()
836 PTR_ERR(i2s->pclk)); in stm32_i2s_parse_dt()
837 return PTR_ERR(i2s->pclk); in stm32_i2s_parse_dt()
840 i2s->i2sclk = devm_clk_get(&pdev->dev, "i2sclk"); in stm32_i2s_parse_dt()
841 if (IS_ERR(i2s->i2sclk)) { in stm32_i2s_parse_dt()
842 if (PTR_ERR(i2s->i2sclk) != -EPROBE_DEFER) in stm32_i2s_parse_dt()
844 PTR_ERR(i2s->i2sclk)); in stm32_i2s_parse_dt()
845 return PTR_ERR(i2s->i2sclk); in stm32_i2s_parse_dt()
848 i2s->x8kclk = devm_clk_get(&pdev->dev, "x8k"); in stm32_i2s_parse_dt()
849 if (IS_ERR(i2s->x8kclk)) { in stm32_i2s_parse_dt()
850 if (PTR_ERR(i2s->x8kclk) != -EPROBE_DEFER) in stm32_i2s_parse_dt()
852 PTR_ERR(i2s->x8kclk)); in stm32_i2s_parse_dt()
853 return PTR_ERR(i2s->x8kclk); in stm32_i2s_parse_dt()
856 i2s->x11kclk = devm_clk_get(&pdev->dev, "x11k"); in stm32_i2s_parse_dt()
857 if (IS_ERR(i2s->x11kclk)) { in stm32_i2s_parse_dt()
858 if (PTR_ERR(i2s->x11kclk) != -EPROBE_DEFER) in stm32_i2s_parse_dt()
860 PTR_ERR(i2s->x11kclk)); in stm32_i2s_parse_dt()
861 return PTR_ERR(i2s->x11kclk); in stm32_i2s_parse_dt()
870 dev_name(&pdev->dev), i2s); in stm32_i2s_parse_dt()
901 struct stm32_i2s_data *i2s; in stm32_i2s_probe() local
905 i2s = devm_kzalloc(&pdev->dev, sizeof(*i2s), GFP_KERNEL); in stm32_i2s_probe()
906 if (!i2s) in stm32_i2s_probe()
909 ret = stm32_i2s_parse_dt(pdev, i2s); in stm32_i2s_probe()
913 i2s->pdev = pdev; in stm32_i2s_probe()
914 i2s->ms_flg = I2S_MS_NOT_SET; in stm32_i2s_probe()
915 spin_lock_init(&i2s->lock_fd); in stm32_i2s_probe()
916 spin_lock_init(&i2s->irq_lock); in stm32_i2s_probe()
917 platform_set_drvdata(pdev, i2s); in stm32_i2s_probe()
919 ret = stm32_i2s_dais_init(pdev, i2s); in stm32_i2s_probe()
923 i2s->regmap = devm_regmap_init_mmio_clk(&pdev->dev, "pclk", in stm32_i2s_probe()
924 i2s->base, i2s->regmap_conf); in stm32_i2s_probe()
925 if (IS_ERR(i2s->regmap)) { in stm32_i2s_probe()
926 if (PTR_ERR(i2s->regmap) != -EPROBE_DEFER) in stm32_i2s_probe()
928 PTR_ERR(i2s->regmap)); in stm32_i2s_probe()
929 return PTR_ERR(i2s->regmap); in stm32_i2s_probe()
940 i2s->dai_drv, 1); in stm32_i2s_probe()
946 /* Set SPI/I2S in i2s mode */ in stm32_i2s_probe()
947 ret = regmap_update_bits(i2s->regmap, STM32_I2S_CGFR_REG, in stm32_i2s_probe()
952 ret = regmap_read(i2s->regmap, STM32_I2S_IPIDR_REG, &val); in stm32_i2s_probe()
957 ret = regmap_read(i2s->regmap, STM32_I2S_HWCFGR_REG, &val); in stm32_i2s_probe()
963 "Device does not support i2s mode\n"); in stm32_i2s_probe()
968 ret = regmap_read(i2s->regmap, STM32_I2S_VERR_REG, &val); in stm32_i2s_probe()
972 dev_dbg(&pdev->dev, "I2S version: %lu.%lu registered\n", in stm32_i2s_probe()
990 struct stm32_i2s_data *i2s = dev_get_drvdata(dev); in stm32_i2s_suspend() local
992 regcache_cache_only(i2s->regmap, true); in stm32_i2s_suspend()
993 regcache_mark_dirty(i2s->regmap); in stm32_i2s_suspend()
1000 struct stm32_i2s_data *i2s = dev_get_drvdata(dev); in stm32_i2s_resume() local
1002 regcache_cache_only(i2s->regmap, false); in stm32_i2s_resume()
1003 return regcache_sync(i2s->regmap); in stm32_i2s_resume()
1013 .name = "st,stm32-i2s",
1023 MODULE_DESCRIPTION("STM32 Soc i2s Interface");
1025 MODULE_ALIAS("platform:stm32-i2s");