From 241b446f30de171b627524c107ce03e5ecee0124 Mon Sep 17 00:00:00 2001 From: Rajeev Kumar Date: Thu, 21 Jun 2012 15:54:52 +0530 Subject: ASoC: Add support for SPEAr ASoC pcm layer. This patch add support for the SPEAr ASoC pcm layer in ASoC framework. The pcm layer uses common snd_dmaengine framework. Signed-off-by: Rajeev Kumar Signed-off-by: Mark Brown --- sound/soc/spear/spear_pcm.c | 214 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 214 insertions(+) create mode 100644 sound/soc/spear/spear_pcm.c (limited to 'sound/soc/spear') diff --git a/sound/soc/spear/spear_pcm.c b/sound/soc/spear/spear_pcm.c new file mode 100644 index 000000000000..97c2cac8e92c --- /dev/null +++ b/sound/soc/spear/spear_pcm.c @@ -0,0 +1,214 @@ +/* + * ALSA PCM interface for ST SPEAr Processors + * + * sound/soc/spear/spear_pcm.c + * + * Copyright (C) 2012 ST Microelectronics + * Rajeev Kumar + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +struct snd_pcm_hardware spear_pcm_hardware = { + .info = (SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER | + SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID | + SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME), + .buffer_bytes_max = 16 * 1024, /* max buffer size */ + .period_bytes_min = 2 * 1024, /* 1 msec data minimum period size */ + .period_bytes_max = 2 * 1024, /* maximum period size */ + .periods_min = 1, /* min # periods */ + .periods_max = 8, /* max # of periods */ + .fifo_size = 0, /* fifo size in bytes */ +}; + +static int spear_pcm_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params) +{ + snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer); + + return 0; +} + +static int spear_pcm_hw_free(struct snd_pcm_substream *substream) +{ + snd_pcm_set_runtime_buffer(substream, NULL); + + return 0; +} + +static int spear_pcm_open(struct snd_pcm_substream *substream) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + + struct spear_dma_data *dma_data = (struct spear_dma_data *) + snd_soc_dai_get_dma_data(rtd->cpu_dai, substream); + int ret; + + ret = snd_soc_set_runtime_hwparams(substream, &spear_pcm_hardware); + if (ret) + return ret; + + ret = snd_dmaengine_pcm_open(substream, dma_data->filter, dma_data); + if (ret) + return ret; + + snd_dmaengine_pcm_set_data(substream, dma_data); + + return 0; +} + +static int spear_pcm_close(struct snd_pcm_substream *substream) +{ + + snd_dmaengine_pcm_close(substream); + + return 0; +} + +static int spear_pcm_mmap(struct snd_pcm_substream *substream, + struct vm_area_struct *vma) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + + return dma_mmap_writecombine(substream->pcm->card->dev, vma, + runtime->dma_area, runtime->dma_addr, + runtime->dma_bytes); +} + +static struct snd_pcm_ops spear_pcm_ops = { + .open = spear_pcm_open, + .close = spear_pcm_close, + .ioctl = snd_pcm_lib_ioctl, + .hw_params = spear_pcm_hw_params, + .hw_free = spear_pcm_hw_free, + .trigger = snd_dmaengine_pcm_trigger, + .pointer = snd_dmaengine_pcm_pointer, + .mmap = spear_pcm_mmap, +}; + +static int +spear_pcm_preallocate_dma_buffer(struct snd_pcm *pcm, int stream, + size_t size) +{ + struct snd_pcm_substream *substream = pcm->streams[stream].substream; + struct snd_dma_buffer *buf = &substream->dma_buffer; + + buf->dev.type = SNDRV_DMA_TYPE_DEV; + buf->dev.dev = pcm->card->dev; + buf->private_data = NULL; + + buf->area = dma_alloc_writecombine(pcm->card->dev, size, + &buf->addr, GFP_KERNEL); + if (!buf->area) + return -ENOMEM; + + dev_info(buf->dev.dev, + " preallocate_dma_buffer: area=%p, addr=%p, size=%d\n", + (void *)buf->area, (void *)buf->addr, size); + + buf->bytes = size; + return 0; +} + +static void spear_pcm_free(struct snd_pcm *pcm) +{ + struct snd_pcm_substream *substream; + struct snd_dma_buffer *buf; + int stream; + + for (stream = 0; stream < 2; stream++) { + substream = pcm->streams[stream].substream; + if (!substream) + continue; + + buf = &substream->dma_buffer; + if (!buf && !buf->area) + continue; + + dma_free_writecombine(pcm->card->dev, buf->bytes, + buf->area, buf->addr); + buf->area = NULL; + } +} + +static u64 spear_pcm_dmamask = DMA_BIT_MASK(32); + +static int spear_pcm_new(struct snd_card *card, + struct snd_soc_dai *dai, struct snd_pcm *pcm) +{ + int ret; + + if (!card->dev->dma_mask) + card->dev->dma_mask = &spear_pcm_dmamask; + if (!card->dev->coherent_dma_mask) + card->dev->coherent_dma_mask = DMA_BIT_MASK(32); + + if (dai->driver->playback.channels_min) { + ret = spear_pcm_preallocate_dma_buffer(pcm, + SNDRV_PCM_STREAM_PLAYBACK, + spear_pcm_hardware.buffer_bytes_max); + if (ret) + return ret; + } + + if (dai->driver->capture.channels_min) { + ret = spear_pcm_preallocate_dma_buffer(pcm, + SNDRV_PCM_STREAM_CAPTURE, + spear_pcm_hardware.buffer_bytes_max); + if (ret) + return ret; + } + + return 0; +} + +struct snd_soc_platform_driver spear_soc_platform = { + .ops = &spear_pcm_ops, + .pcm_new = spear_pcm_new, + .pcm_free = spear_pcm_free, +}; + +static int __devinit spear_soc_platform_probe(struct platform_device *pdev) +{ + return snd_soc_register_platform(&pdev->dev, &spear_soc_platform); +} + +static int __devexit spear_soc_platform_remove(struct platform_device *pdev) +{ + snd_soc_unregister_platform(&pdev->dev); + + return 0; +} + +static struct platform_driver spear_pcm_driver = { + .driver = { + .name = "spear-pcm-audio", + .owner = THIS_MODULE, + }, + + .probe = spear_soc_platform_probe, + .remove = __devexit_p(spear_soc_platform_remove), +}; + +module_platform_driver(spear_pcm_driver); + +MODULE_AUTHOR("Rajeev Kumar "); +MODULE_DESCRIPTION("SPEAr PCM DMA module"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:spear-pcm-audio"); -- cgit v1.2.3 From ace36d85809f6005b559802f194d44c6aa61af88 Mon Sep 17 00:00:00 2001 From: Vipin Kumar Date: Thu, 21 Jun 2012 15:54:53 +0530 Subject: ASoC: SPEAr spdif_in: Add spdif IN support This patch implements the spdif IN driver for ST peripheral Signed-off-by: Vipin Kumar Signed-off-by: Rajeev Kumar Signed-off-by: Mark Brown --- sound/soc/spear/spdif_in.c | 297 ++++++++++++++++++++++++++++++++++++++++ sound/soc/spear/spdif_in_regs.h | 60 ++++++++ 2 files changed, 357 insertions(+) create mode 100644 sound/soc/spear/spdif_in.c create mode 100644 sound/soc/spear/spdif_in_regs.h (limited to 'sound/soc/spear') diff --git a/sound/soc/spear/spdif_in.c b/sound/soc/spear/spdif_in.c new file mode 100644 index 000000000000..c7c4b20395bb --- /dev/null +++ b/sound/soc/spear/spdif_in.c @@ -0,0 +1,297 @@ +/* + * ALSA SoC SPDIF In Audio Layer for spear processors + * + * Copyright (C) 2012 ST Microelectronics + * Vipin Kumar + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "spdif_in_regs.h" + +struct spdif_in_params { + u32 format; +}; + +struct spdif_in_dev { + struct clk *clk; + struct spear_dma_data dma_params; + struct spdif_in_params saved_params; + void *io_base; + struct device *dev; + void (*reset_perip)(void); + int irq; +}; + +static void spdif_in_configure(struct spdif_in_dev *host) +{ + u32 ctrl = SPDIF_IN_PRTYEN | SPDIF_IN_STATEN | SPDIF_IN_USREN | + SPDIF_IN_VALEN | SPDIF_IN_BLKEN; + ctrl |= SPDIF_MODE_16BIT | SPDIF_FIFO_THRES_16; + + writel(ctrl, host->io_base + SPDIF_IN_CTRL); + writel(0xF, host->io_base + SPDIF_IN_IRQ_MASK); +} + +static int spdif_in_startup(struct snd_pcm_substream *substream, + struct snd_soc_dai *cpu_dai) +{ + struct spdif_in_dev *host = snd_soc_dai_get_drvdata(cpu_dai); + + if (substream->stream != SNDRV_PCM_STREAM_CAPTURE) + return -EINVAL; + + snd_soc_dai_set_dma_data(cpu_dai, substream, (void *)&host->dma_params); + return 0; +} + +static void spdif_in_shutdown(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct spdif_in_dev *host = snd_soc_dai_get_drvdata(dai); + + if (substream->stream != SNDRV_PCM_STREAM_CAPTURE) + return; + + writel(0x0, host->io_base + SPDIF_IN_IRQ_MASK); + snd_soc_dai_set_dma_data(dai, substream, NULL); +} + +static void spdif_in_format(struct spdif_in_dev *host, u32 format) +{ + u32 ctrl = readl(host->io_base + SPDIF_IN_CTRL); + + switch (format) { + case SNDRV_PCM_FORMAT_S16_LE: + ctrl |= SPDIF_XTRACT_16BIT; + break; + + case SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE: + ctrl &= ~SPDIF_XTRACT_16BIT; + break; + } + + writel(ctrl, host->io_base + SPDIF_IN_CTRL); +} + +static int spdif_in_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params, + struct snd_soc_dai *dai) +{ + struct spdif_in_dev *host = snd_soc_dai_get_drvdata(dai); + u32 format; + + if (substream->stream != SNDRV_PCM_STREAM_CAPTURE) + return -EINVAL; + + format = params_format(params); + host->saved_params.format = format; + + return 0; +} + +static int spdif_in_trigger(struct snd_pcm_substream *substream, int cmd, + struct snd_soc_dai *dai) +{ + struct spdif_in_dev *host = snd_soc_dai_get_drvdata(dai); + u32 ctrl; + int ret = 0; + + if (substream->stream != SNDRV_PCM_STREAM_CAPTURE) + return -EINVAL; + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + case SNDRV_PCM_TRIGGER_RESUME: + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + clk_enable(host->clk); + spdif_in_configure(host); + spdif_in_format(host, host->saved_params.format); + + ctrl = readl(host->io_base + SPDIF_IN_CTRL); + ctrl |= SPDIF_IN_SAMPLE | SPDIF_IN_ENB; + writel(ctrl, host->io_base + SPDIF_IN_CTRL); + writel(0xF, host->io_base + SPDIF_IN_IRQ_MASK); + break; + + case SNDRV_PCM_TRIGGER_STOP: + case SNDRV_PCM_TRIGGER_SUSPEND: + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + ctrl = readl(host->io_base + SPDIF_IN_CTRL); + ctrl &= ~(SPDIF_IN_SAMPLE | SPDIF_IN_ENB); + writel(ctrl, host->io_base + SPDIF_IN_CTRL); + writel(0x0, host->io_base + SPDIF_IN_IRQ_MASK); + + if (host->reset_perip) + host->reset_perip(); + clk_disable(host->clk); + break; + + default: + ret = -EINVAL; + break; + } + return ret; +} + +static struct snd_soc_dai_ops spdif_in_dai_ops = { + .startup = spdif_in_startup, + .shutdown = spdif_in_shutdown, + .trigger = spdif_in_trigger, + .hw_params = spdif_in_hw_params, +}; + +struct snd_soc_dai_driver spdif_in_dai = { + .capture = { + .channels_min = 2, + .channels_max = 2, + .rates = (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \ + SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 | \ + SNDRV_PCM_RATE_192000), + .formats = SNDRV_PCM_FMTBIT_S16_LE | \ + SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE, + }, + .ops = &spdif_in_dai_ops, +}; + +static irqreturn_t spdif_in_irq(int irq, void *arg) +{ + struct spdif_in_dev *host = (struct spdif_in_dev *)arg; + + u32 irq_status = readl(host->io_base + SPDIF_IN_IRQ); + + if (!irq_status) + return IRQ_NONE; + + if (irq_status & SPDIF_IRQ_FIFOWRITE) + dev_err(host->dev, "spdif in: fifo write error"); + if (irq_status & SPDIF_IRQ_EMPTYFIFOREAD) + dev_err(host->dev, "spdif in: empty fifo read error"); + if (irq_status & SPDIF_IRQ_FIFOFULL) + dev_err(host->dev, "spdif in: fifo full error"); + if (irq_status & SPDIF_IRQ_OUTOFRANGE) + dev_err(host->dev, "spdif in: out of range error"); + + writel(0, host->io_base + SPDIF_IN_IRQ); + + return IRQ_HANDLED; +} + +static int spdif_in_probe(struct platform_device *pdev) +{ + struct spdif_in_dev *host; + struct spear_spdif_platform_data *pdata; + struct resource *res, *res_fifo; + int ret; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) + return -EINVAL; + + res_fifo = platform_get_resource(pdev, IORESOURCE_IO, 0); + if (!res_fifo) + return -EINVAL; + + if (!devm_request_mem_region(&pdev->dev, res->start, + resource_size(res), pdev->name)) { + dev_warn(&pdev->dev, "Failed to get memory resourse\n"); + return -ENOENT; + } + + host = devm_kzalloc(&pdev->dev, sizeof(*host), GFP_KERNEL); + if (!host) { + dev_warn(&pdev->dev, "kzalloc fail\n"); + return -ENOMEM; + } + + host->io_base = devm_ioremap(&pdev->dev, res->start, + resource_size(res)); + if (!host->io_base) { + dev_warn(&pdev->dev, "ioremap failed\n"); + return -ENOMEM; + } + + host->irq = platform_get_irq(pdev, 0); + if (host->irq < 0) + return -EINVAL; + + host->clk = clk_get(&pdev->dev, NULL); + if (IS_ERR(host->clk)) + return PTR_ERR(host->clk); + + pdata = dev_get_platdata(&pdev->dev); + + if (!pdata) + return -EINVAL; + + host->dma_params.data = pdata->dma_params; + host->dma_params.addr = res_fifo->start; + host->dma_params.max_burst = 16; + host->dma_params.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; + host->dma_params.filter = pdata->filter; + host->reset_perip = pdata->reset_perip; + + host->dev = &pdev->dev; + dev_set_drvdata(&pdev->dev, host); + + ret = devm_request_irq(&pdev->dev, host->irq, spdif_in_irq, 0, + "spdif-in", host); + if (ret) { + clk_put(host->clk); + dev_warn(&pdev->dev, "request_irq failed\n"); + return ret; + } + + ret = snd_soc_register_dai(&pdev->dev, &spdif_in_dai); + if (ret != 0) { + clk_put(host->clk); + return ret; + } + + return 0; +} + +static int spdif_in_remove(struct platform_device *pdev) +{ + struct spdif_in_dev *host = dev_get_drvdata(&pdev->dev); + + snd_soc_unregister_dai(&pdev->dev); + dev_set_drvdata(&pdev->dev, NULL); + + clk_put(host->clk); + + return 0; +} + + +static struct platform_driver spdif_in_driver = { + .probe = spdif_in_probe, + .remove = spdif_in_remove, + .driver = { + .name = "spdif-in", + .owner = THIS_MODULE, + }, +}; + +module_platform_driver(spdif_in_driver); + +MODULE_AUTHOR("Vipin Kumar "); +MODULE_DESCRIPTION("SPEAr SPDIF IN SoC Interface"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:spdif_in"); diff --git a/sound/soc/spear/spdif_in_regs.h b/sound/soc/spear/spdif_in_regs.h new file mode 100644 index 000000000000..37af7bc66b7f --- /dev/null +++ b/sound/soc/spear/spdif_in_regs.h @@ -0,0 +1,60 @@ +/* + * SPEAr SPDIF IN controller header file + * + * Copyright (ST) 2011 Vipin Kumar (vipin.kumar@st.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifndef SPDIF_IN_REGS_H +#define SPDIF_IN_REGS_H + +#define SPDIF_IN_CTRL 0x00 + #define SPDIF_IN_PRTYEN (1 << 20) + #define SPDIF_IN_STATEN (1 << 19) + #define SPDIF_IN_USREN (1 << 18) + #define SPDIF_IN_VALEN (1 << 17) + #define SPDIF_IN_BLKEN (1 << 16) + + #define SPDIF_MODE_24BIT (8 << 12) + #define SPDIF_MODE_23BIT (7 << 12) + #define SPDIF_MODE_22BIT (6 << 12) + #define SPDIF_MODE_21BIT (5 << 12) + #define SPDIF_MODE_20BIT (4 << 12) + #define SPDIF_MODE_19BIT (3 << 12) + #define SPDIF_MODE_18BIT (2 << 12) + #define SPDIF_MODE_17BIT (1 << 12) + #define SPDIF_MODE_16BIT (0 << 12) + #define SPDIF_MODE_MASK (0x0F << 12) + + #define SPDIF_IN_VALID (1 << 11) + #define SPDIF_IN_SAMPLE (1 << 10) + #define SPDIF_DATA_SWAP (1 << 9) + #define SPDIF_IN_ENB (1 << 8) + #define SPDIF_DATA_REVERT (1 << 7) + #define SPDIF_XTRACT_16BIT (1 << 6) + #define SPDIF_FIFO_THRES_16 (16 << 0) + +#define SPDIF_IN_IRQ_MASK 0x04 +#define SPDIF_IN_IRQ 0x08 + #define SPDIF_IRQ_FIFOWRITE (1 << 0) + #define SPDIF_IRQ_EMPTYFIFOREAD (1 << 1) + #define SPDIF_IRQ_FIFOFULL (1 << 2) + #define SPDIF_IRQ_OUTOFRANGE (1 << 3) + +#define SPDIF_IN_STA 0x0C + #define SPDIF_IN_LOCK (0x1 << 0) + +#endif /* SPDIF_IN_REGS_H */ -- cgit v1.2.3 From e584f9b4c2a919eb665fea8536ecd2bd7260e876 Mon Sep 17 00:00:00 2001 From: Vipin Kumar Date: Wed, 4 Jul 2012 16:11:13 +0530 Subject: ASoC: SPEAr spdif_out: Add spdif out support This patch implements the spdif out driver for ST peripheral. This peripheral implements IEC60958 standard Signed-off-by: Vipin Kumar Signed-off-by: Rajeev Kumar Signed-off-by: Mark Brown --- sound/soc/spear/spdif_out.c | 389 +++++++++++++++++++++++++++++++++++++++ sound/soc/spear/spdif_out_regs.h | 79 ++++++++ 2 files changed, 468 insertions(+) create mode 100644 sound/soc/spear/spdif_out.c create mode 100644 sound/soc/spear/spdif_out_regs.h (limited to 'sound/soc/spear') diff --git a/sound/soc/spear/spdif_out.c b/sound/soc/spear/spdif_out.c new file mode 100644 index 000000000000..5eac4cda2fd7 --- /dev/null +++ b/sound/soc/spear/spdif_out.c @@ -0,0 +1,389 @@ +/* + * ALSA SoC SPDIF Out Audio Layer for spear processors + * + * Copyright (C) 2012 ST Microelectronics + * Vipin Kumar + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "spdif_out_regs.h" + +struct spdif_out_params { + u32 rate; + u32 core_freq; + u32 mute; +}; + +struct spdif_out_dev { + struct clk *clk; + struct spear_dma_data dma_params; + struct spdif_out_params saved_params; + u32 running; + void __iomem *io_base; +}; + +static void spdif_out_configure(struct spdif_out_dev *host) +{ + writel(SPDIF_OUT_RESET, host->io_base + SPDIF_OUT_SOFT_RST); + mdelay(1); + writel(readl(host->io_base + SPDIF_OUT_SOFT_RST) & ~SPDIF_OUT_RESET, + host->io_base + SPDIF_OUT_SOFT_RST); + + writel(SPDIF_OUT_FDMA_TRIG_16 | SPDIF_OUT_MEMFMT_16_16 | + SPDIF_OUT_VALID_HW | SPDIF_OUT_USER_HW | + SPDIF_OUT_CHNLSTA_HW | SPDIF_OUT_PARITY_HW, + host->io_base + SPDIF_OUT_CFG); + + writel(0x7F, host->io_base + SPDIF_OUT_INT_STA_CLR); + writel(0x7F, host->io_base + SPDIF_OUT_INT_EN_CLR); +} + +static int spdif_out_startup(struct snd_pcm_substream *substream, + struct snd_soc_dai *cpu_dai) +{ + struct spdif_out_dev *host = snd_soc_dai_get_drvdata(cpu_dai); + int ret; + + if (substream->stream != SNDRV_PCM_STREAM_PLAYBACK) + return -EINVAL; + + snd_soc_dai_set_dma_data(cpu_dai, substream, (void *)&host->dma_params); + + ret = clk_enable(host->clk); + if (ret) + return ret; + + host->running = true; + spdif_out_configure(host); + + return 0; +} + +static void spdif_out_shutdown(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct spdif_out_dev *host = snd_soc_dai_get_drvdata(dai); + + if (substream->stream != SNDRV_PCM_STREAM_PLAYBACK) + return; + + clk_disable(host->clk); + host->running = false; + snd_soc_dai_set_dma_data(dai, substream, NULL); +} + +static void spdif_out_clock(struct spdif_out_dev *host, u32 core_freq, + u32 rate) +{ + u32 divider, ctrl; + + clk_set_rate(host->clk, core_freq); + divider = DIV_ROUND_CLOSEST(clk_get_rate(host->clk), (rate * 128)); + + ctrl = readl(host->io_base + SPDIF_OUT_CTRL); + ctrl &= ~SPDIF_DIVIDER_MASK; + ctrl |= (divider << SPDIF_DIVIDER_SHIFT) & SPDIF_DIVIDER_MASK; + writel(ctrl, host->io_base + SPDIF_OUT_CTRL); +} + +static int spdif_out_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params, + struct snd_soc_dai *dai) +{ + struct spdif_out_dev *host = snd_soc_dai_get_drvdata(dai); + u32 rate, core_freq; + + if (substream->stream != SNDRV_PCM_STREAM_PLAYBACK) + return -EINVAL; + + rate = params_rate(params); + + switch (rate) { + case 8000: + case 16000: + case 32000: + case 64000: + /* + * The clock is multiplied by 10 to bring it to feasible range + * of frequencies for sscg + */ + core_freq = 64000 * 128 * 10; /* 81.92 MHz */ + break; + case 5512: + case 11025: + case 22050: + case 44100: + case 88200: + case 176400: + core_freq = 176400 * 128; /* 22.5792 MHz */ + break; + case 48000: + case 96000: + case 192000: + default: + core_freq = 192000 * 128; /* 24.576 MHz */ + break; + } + + spdif_out_clock(host, core_freq, rate); + host->saved_params.core_freq = core_freq; + host->saved_params.rate = rate; + + return 0; +} + +static int spdif_out_trigger(struct snd_pcm_substream *substream, int cmd, + struct snd_soc_dai *dai) +{ + struct spdif_out_dev *host = snd_soc_dai_get_drvdata(dai); + u32 ctrl; + int ret = 0; + + if (substream->stream != SNDRV_PCM_STREAM_PLAYBACK) + return -EINVAL; + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + case SNDRV_PCM_TRIGGER_RESUME: + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + ctrl = readl(host->io_base + SPDIF_OUT_CTRL); + ctrl &= ~SPDIF_OPMODE_MASK; + if (!host->saved_params.mute) + ctrl |= SPDIF_OPMODE_AUD_DATA | + SPDIF_STATE_NORMAL; + else + ctrl |= SPDIF_OPMODE_MUTE_PCM; + writel(ctrl, host->io_base + SPDIF_OUT_CTRL); + break; + + case SNDRV_PCM_TRIGGER_STOP: + case SNDRV_PCM_TRIGGER_SUSPEND: + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + ctrl = readl(host->io_base + SPDIF_OUT_CTRL); + ctrl &= ~SPDIF_OPMODE_MASK; + ctrl |= SPDIF_OPMODE_OFF; + writel(ctrl, host->io_base + SPDIF_OUT_CTRL); + break; + + default: + ret = -EINVAL; + break; + } + return ret; +} + +static int spdif_digital_mute(struct snd_soc_dai *dai, int mute) +{ + struct spdif_out_dev *host = snd_soc_dai_get_drvdata(dai); + u32 val; + + host->saved_params.mute = mute; + val = readl(host->io_base + SPDIF_OUT_CTRL); + val &= ~SPDIF_OPMODE_MASK; + + if (mute) + val |= SPDIF_OPMODE_MUTE_PCM; + else { + if (host->running) + val |= SPDIF_OPMODE_AUD_DATA | SPDIF_STATE_NORMAL; + else + val |= SPDIF_OPMODE_OFF; + } + + writel(val, host->io_base + SPDIF_OUT_CTRL); + return 0; +} + +static int spdif_mute_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); + struct snd_soc_card *card = codec->card; + struct snd_soc_pcm_runtime *rtd = card->rtd; + struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + struct spdif_out_dev *host = snd_soc_dai_get_drvdata(cpu_dai); + + ucontrol->value.integer.value[0] = host->saved_params.mute; + return 0; +} + +static int spdif_mute_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); + struct snd_soc_card *card = codec->card; + struct snd_soc_pcm_runtime *rtd = card->rtd; + struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + struct spdif_out_dev *host = snd_soc_dai_get_drvdata(cpu_dai); + + if (host->saved_params.mute == ucontrol->value.integer.value[0]) + return 0; + + spdif_digital_mute(cpu_dai, ucontrol->value.integer.value[0]); + + return 1; +} +static const struct snd_kcontrol_new spdif_out_controls[] = { + SOC_SINGLE_BOOL_EXT("IEC958 Playback Switch", 0, + spdif_mute_get, spdif_mute_put), +}; + +int spdif_soc_dai_probe(struct snd_soc_dai *dai) +{ + return snd_soc_add_dai_controls(dai, spdif_out_controls, + ARRAY_SIZE(spdif_out_controls)); +} + +static const struct snd_soc_dai_ops spdif_out_dai_ops = { + .digital_mute = spdif_digital_mute, + .startup = spdif_out_startup, + .shutdown = spdif_out_shutdown, + .trigger = spdif_out_trigger, + .hw_params = spdif_out_hw_params, +}; + +static struct snd_soc_dai_driver spdif_out_dai = { + .playback = { + .channels_min = 2, + .channels_max = 2, + .rates = (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \ + SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 | \ + SNDRV_PCM_RATE_192000), + .formats = SNDRV_PCM_FMTBIT_S16_LE, + }, + .probe = spdif_soc_dai_probe, + .ops = &spdif_out_dai_ops, +}; + +static int spdif_out_probe(struct platform_device *pdev) +{ + struct spdif_out_dev *host; + struct spear_spdif_platform_data *pdata; + struct resource *res; + int ret; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) + return -EINVAL; + + if (!devm_request_mem_region(&pdev->dev, res->start, + resource_size(res), pdev->name)) { + dev_warn(&pdev->dev, "Failed to get memory resourse\n"); + return -ENOENT; + } + + host = devm_kzalloc(&pdev->dev, sizeof(*host), GFP_KERNEL); + if (!host) { + dev_warn(&pdev->dev, "kzalloc fail\n"); + return -ENOMEM; + } + + host->io_base = devm_ioremap(&pdev->dev, res->start, + resource_size(res)); + if (!host->io_base) { + dev_warn(&pdev->dev, "ioremap failed\n"); + return -ENOMEM; + } + + host->clk = clk_get(&pdev->dev, NULL); + if (IS_ERR(host->clk)) + return PTR_ERR(host->clk); + + pdata = dev_get_platdata(&pdev->dev); + + host->dma_params.data = pdata->dma_params; + host->dma_params.addr = res->start + SPDIF_OUT_FIFO_DATA; + host->dma_params.max_burst = 16; + host->dma_params.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; + host->dma_params.filter = pdata->filter; + + dev_set_drvdata(&pdev->dev, host); + + ret = snd_soc_register_dai(&pdev->dev, &spdif_out_dai); + if (ret != 0) { + clk_put(host->clk); + return ret; + } + + return 0; +} + +static int spdif_out_remove(struct platform_device *pdev) +{ + struct spdif_out_dev *host = dev_get_drvdata(&pdev->dev); + + snd_soc_unregister_dai(&pdev->dev); + dev_set_drvdata(&pdev->dev, NULL); + + clk_put(host->clk); + + return 0; +} + +#ifdef CONFIG_PM +static int spdif_out_suspend(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct spdif_out_dev *host = dev_get_drvdata(&pdev->dev); + + if (host->running) + clk_disable(host->clk); + + return 0; +} + +static int spdif_out_resume(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct spdif_out_dev *host = dev_get_drvdata(&pdev->dev); + + if (host->running) { + clk_enable(host->clk); + spdif_out_configure(host); + spdif_out_clock(host, host->saved_params.core_freq, + host->saved_params.rate); + } + return 0; +} + +static SIMPLE_DEV_PM_OPS(spdif_out_dev_pm_ops, spdif_out_suspend, \ + spdif_out_resume); + +#define SPDIF_OUT_DEV_PM_OPS (&spdif_out_dev_pm_ops) + +#else +#define SPDIF_OUT_DEV_PM_OPS NULL + +#endif + +static struct platform_driver spdif_out_driver = { + .probe = spdif_out_probe, + .remove = spdif_out_remove, + .driver = { + .name = "spdif-out", + .owner = THIS_MODULE, + .pm = SPDIF_OUT_DEV_PM_OPS, + }, +}; + +module_platform_driver(spdif_out_driver); + +MODULE_AUTHOR("Vipin Kumar "); +MODULE_DESCRIPTION("SPEAr SPDIF OUT SoC Interface"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:spdif_out"); diff --git a/sound/soc/spear/spdif_out_regs.h b/sound/soc/spear/spdif_out_regs.h new file mode 100644 index 000000000000..a5e53324b452 --- /dev/null +++ b/sound/soc/spear/spdif_out_regs.h @@ -0,0 +1,79 @@ +/* + * SPEAr SPDIF OUT controller header file + * + * Copyright (ST) 2011 Vipin Kumar (vipin.kumar@st.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifndef SPDIF_OUT_REGS_H +#define SPDIF_OUT_REGS_H + +#define SPDIF_OUT_SOFT_RST 0x00 + #define SPDIF_OUT_RESET (1 << 0) +#define SPDIF_OUT_FIFO_DATA 0x04 +#define SPDIF_OUT_INT_STA 0x08 +#define SPDIF_OUT_INT_STA_CLR 0x0C + #define SPDIF_INT_UNDERFLOW (1 << 0) + #define SPDIF_INT_EODATA (1 << 1) + #define SPDIF_INT_EOBLOCK (1 << 2) + #define SPDIF_INT_EOLATENCY (1 << 3) + #define SPDIF_INT_EOPD_DATA (1 << 4) + #define SPDIF_INT_MEMFULLREAD (1 << 5) + #define SPDIF_INT_EOPD_PAUSE (1 << 6) + +#define SPDIF_OUT_INT_EN 0x10 +#define SPDIF_OUT_INT_EN_SET 0x14 +#define SPDIF_OUT_INT_EN_CLR 0x18 +#define SPDIF_OUT_CTRL 0x1C + #define SPDIF_OPMODE_MASK (7 << 0) + #define SPDIF_OPMODE_OFF (0 << 0) + #define SPDIF_OPMODE_MUTE_PCM (1 << 0) + #define SPDIF_OPMODE_MUTE_PAUSE (2 << 0) + #define SPDIF_OPMODE_AUD_DATA (3 << 0) + #define SPDIF_OPMODE_ENCODE (4 << 0) + #define SPDIF_STATE_NORMAL (1 << 3) + #define SPDIF_DIVIDER_MASK (0xff << 5) + #define SPDIF_DIVIDER_SHIFT (5) + #define SPDIF_SAMPLEREAD_MASK (0x1ffff << 15) + #define SPDIF_SAMPLEREAD_SHIFT (15) +#define SPDIF_OUT_STA 0x20 +#define SPDIF_OUT_PA_PB 0x24 +#define SPDIF_OUT_PC_PD 0x28 +#define SPDIF_OUT_CL1 0x2C +#define SPDIF_OUT_CR1 0x30 +#define SPDIF_OUT_CL2_CR2_UV 0x34 +#define SPDIF_OUT_PAUSE_LAT 0x38 +#define SPDIF_OUT_FRMLEN_BRST 0x3C +#define SPDIF_OUT_CFG 0x40 + #define SPDIF_OUT_MEMFMT_16_0 (0 << 5) + #define SPDIF_OUT_MEMFMT_16_16 (1 << 5) + #define SPDIF_OUT_VALID_DMA (0 << 3) + #define SPDIF_OUT_VALID_HW (1 << 3) + #define SPDIF_OUT_USER_DMA (0 << 2) + #define SPDIF_OUT_USER_HW (1 << 2) + #define SPDIF_OUT_CHNLSTA_DMA (0 << 1) + #define SPDIF_OUT_CHNLSTA_HW (1 << 1) + #define SPDIF_OUT_PARITY_HW (0 << 0) + #define SPDIF_OUT_PARITY_DMA (1 << 0) + #define SPDIF_OUT_FDMA_TRIG_2 (2 << 8) + #define SPDIF_OUT_FDMA_TRIG_6 (6 << 8) + #define SPDIF_OUT_FDMA_TRIG_8 (8 << 8) + #define SPDIF_OUT_FDMA_TRIG_10 (10 << 8) + #define SPDIF_OUT_FDMA_TRIG_12 (12 << 8) + #define SPDIF_OUT_FDMA_TRIG_16 (16 << 8) + #define SPDIF_OUT_FDMA_TRIG_18 (18 << 8) + +#endif /* SPDIF_OUT_REGS_H */ -- cgit v1.2.3