2010-03-11 16:32:42 +01:00
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/*
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* ALSA SoC Voice Codec Interface for TI DAVINCI processor
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*
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* Copyright (C) 2010 Texas Instruments.
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*
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* Author: Miguel Aguilar <miguel.aguilar@ridgerun.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/device.h>
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#include <linux/delay.h>
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2010-03-29 19:52:29 +02:00
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#include <linux/slab.h>
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2010-03-11 16:32:42 +01:00
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#include <linux/io.h>
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#include <linux/mfd/davinci_voicecodec.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/initval.h>
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#include <sound/soc.h>
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#include "davinci-pcm.h"
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#include "davinci-i2s.h"
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#define MOD_REG_BIT(val, mask, set) do { \
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if (set) { \
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val |= mask; \
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} else { \
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val &= ~mask; \
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} \
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} while (0)
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struct davinci_vcif_dev {
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struct davinci_vc *davinci_vc;
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struct davinci_pcm_dma_params dma_params[2];
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};
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static void davinci_vcif_start(struct snd_pcm_substream *substream)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct davinci_vcif_dev *davinci_vcif_dev =
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2010-03-17 21:15:21 +01:00
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snd_soc_dai_get_drvdata(rtd->cpu_dai);
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2010-03-11 16:32:42 +01:00
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struct davinci_vc *davinci_vc = davinci_vcif_dev->davinci_vc;
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u32 w;
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/* Start the sample generator and enable transmitter/receiver */
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w = readl(davinci_vc->base + DAVINCI_VC_CTRL);
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
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2011-07-20 14:06:04 +02:00
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MOD_REG_BIT(w, DAVINCI_VC_CTRL_RSTDAC, 0);
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2010-03-11 16:32:42 +01:00
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else
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2011-07-20 14:06:04 +02:00
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MOD_REG_BIT(w, DAVINCI_VC_CTRL_RSTADC, 0);
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2010-03-11 16:32:42 +01:00
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writel(w, davinci_vc->base + DAVINCI_VC_CTRL);
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}
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static void davinci_vcif_stop(struct snd_pcm_substream *substream)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct davinci_vcif_dev *davinci_vcif_dev =
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2010-03-17 21:15:21 +01:00
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snd_soc_dai_get_drvdata(rtd->cpu_dai);
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2010-03-11 16:32:42 +01:00
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struct davinci_vc *davinci_vc = davinci_vcif_dev->davinci_vc;
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u32 w;
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/* Reset transmitter/receiver and sample rate/frame sync generators */
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w = readl(davinci_vc->base + DAVINCI_VC_CTRL);
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
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2011-07-20 14:06:04 +02:00
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MOD_REG_BIT(w, DAVINCI_VC_CTRL_RSTDAC, 1);
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2010-03-11 16:32:42 +01:00
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else
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2011-07-20 14:06:04 +02:00
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MOD_REG_BIT(w, DAVINCI_VC_CTRL_RSTADC, 1);
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2010-03-11 16:32:42 +01:00
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writel(w, davinci_vc->base + DAVINCI_VC_CTRL);
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}
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static int davinci_vcif_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params,
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struct snd_soc_dai *dai)
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{
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2010-03-17 21:15:21 +01:00
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struct davinci_vcif_dev *davinci_vcif_dev = snd_soc_dai_get_drvdata(dai);
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2010-03-11 16:32:42 +01:00
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struct davinci_vc *davinci_vc = davinci_vcif_dev->davinci_vc;
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struct davinci_pcm_dma_params *dma_params =
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&davinci_vcif_dev->dma_params[substream->stream];
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u32 w;
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/* Restart the codec before setup */
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davinci_vcif_stop(substream);
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davinci_vcif_start(substream);
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/* General line settings */
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writel(DAVINCI_VC_CTRL_MASK, davinci_vc->base + DAVINCI_VC_CTRL);
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writel(DAVINCI_VC_INT_MASK, davinci_vc->base + DAVINCI_VC_INTCLR);
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writel(DAVINCI_VC_INT_MASK, davinci_vc->base + DAVINCI_VC_INTEN);
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w = readl(davinci_vc->base + DAVINCI_VC_CTRL);
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/* Determine xfer data type */
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switch (params_format(params)) {
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case SNDRV_PCM_FORMAT_U8:
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dma_params->data_type = 0;
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MOD_REG_BIT(w, DAVINCI_VC_CTRL_RD_BITS_8 |
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DAVINCI_VC_CTRL_RD_UNSIGNED |
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DAVINCI_VC_CTRL_WD_BITS_8 |
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DAVINCI_VC_CTRL_WD_UNSIGNED, 1);
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break;
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case SNDRV_PCM_FORMAT_S8:
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dma_params->data_type = 1;
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MOD_REG_BIT(w, DAVINCI_VC_CTRL_RD_BITS_8 |
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DAVINCI_VC_CTRL_WD_BITS_8, 1);
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MOD_REG_BIT(w, DAVINCI_VC_CTRL_RD_UNSIGNED |
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DAVINCI_VC_CTRL_WD_UNSIGNED, 0);
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break;
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case SNDRV_PCM_FORMAT_S16_LE:
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dma_params->data_type = 2;
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MOD_REG_BIT(w, DAVINCI_VC_CTRL_RD_BITS_8 |
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DAVINCI_VC_CTRL_RD_UNSIGNED |
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DAVINCI_VC_CTRL_WD_BITS_8 |
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DAVINCI_VC_CTRL_WD_UNSIGNED, 0);
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break;
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default:
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printk(KERN_WARNING "davinci-vcif: unsupported PCM format");
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return -EINVAL;
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}
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dma_params->acnt = dma_params->data_type;
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writel(w, davinci_vc->base + DAVINCI_VC_CTRL);
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return 0;
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}
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static int davinci_vcif_trigger(struct snd_pcm_substream *substream, int cmd,
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struct snd_soc_dai *dai)
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{
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int ret = 0;
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switch (cmd) {
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case SNDRV_PCM_TRIGGER_START:
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case SNDRV_PCM_TRIGGER_RESUME:
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case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
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davinci_vcif_start(substream);
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2011-07-20 14:07:18 +02:00
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break;
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2010-03-11 16:32:42 +01:00
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case SNDRV_PCM_TRIGGER_STOP:
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case SNDRV_PCM_TRIGGER_SUSPEND:
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case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
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davinci_vcif_stop(substream);
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break;
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default:
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ret = -EINVAL;
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}
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return ret;
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}
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ASoC: davinci: fixes for multi-component
Multi-component commit f0fba2ad broke a few things which this patch should
fix. Tested on the DM355 EVM. I've been as careful as I can, but it would be
good if those with access to other Davinci boards could test.
--
The multi-component commit put the initialisation of
snd_soc_dai.[capture|playback]_dma_data into snd_soc_dai_ops.hw_params of the
McBSP, McASP & VCIF drivers (davinci-i2s.c, davinci-mcasp.c & davinci-vcif.c).
The initialisation had to be moved from the probe function in these drivers
because davinci_*_dai changed from snd_soc_dai to snd_soc_dai_driver.
Unfortunately, the DMA params pointer is needed by davinci_pcm_open (in
davinci-pcm.c) before hw_params is called. I have moved the initialisation to
a new snd_soc_dai_ops.startup function in each of these drivers. This fix
indicates that all platforms that use davinci-pcm must have been broken and
need to test with this fix.
--
The multi-component commit also changed the McBSP driver name from
"davinci-asp" to "davinci-i2s" in davinci-i2s.c without updating the board
level references to the driver name. This change is understandable, as there
is a similarly named "davinci-mcasp" driver in davinci-mcasp.c.
There is probably no 'correct' name for this driver. The DM6446 datasheet
calls it the "ASP" and describes it as a "specialised McBSP". The DM355
datasheet calls it the "ASP" and describes it as a "specialised ASP". The
DM365 datasheet calls it the "McBSP". Rather than fix this problem by
reverting to "davinci-asp", I've elected to avoid future confusion with the
"davinci-mcasp" driver by changing it to "davinci-mcbsp", which is also
consistent with the names of the functions in the driver. There are other
fixes required, so it was never going to be as simple as a revert anyway.
--
The DM365 only has one McBSP port (of the McBSP platforms, only the DM355 has
2 ports), so I've changed the the id of the platform_device from 0 to -1.
--
In davinci-evm.c, the DM6446 EVM can no longer share a snd_soc_dai_link
structure with the DM355 EVM as they use different cpu DAI names (the DM355
has 2 ports and the EVM uses the second port, but the DM6446 only has 1 port).
This also means that the 2 boards need different snd_soc_card structures.
--
The codec_name entries in davinci-evm.c didn't match the i2c ids in the board
files. I have only checked and fixed the details of the names used for the
McBSP based platforms. Someone with a McASP based platform (eg DA8xx) should
check the others.
Signed-off-by: Chris Paulson-Ellis <chris@edesix.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-11-16 13:27:09 +01:00
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static int davinci_vcif_startup(struct snd_pcm_substream *substream,
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struct snd_soc_dai *dai)
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{
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struct davinci_vcif_dev *dev = snd_soc_dai_get_drvdata(dai);
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snd_soc_dai_set_dma_data(dai, substream, dev->dma_params);
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return 0;
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}
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2010-03-11 16:32:42 +01:00
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#define DAVINCI_VCIF_RATES SNDRV_PCM_RATE_8000_48000
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2011-11-23 11:40:40 +01:00
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static const struct snd_soc_dai_ops davinci_vcif_dai_ops = {
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ASoC: davinci: fixes for multi-component
Multi-component commit f0fba2ad broke a few things which this patch should
fix. Tested on the DM355 EVM. I've been as careful as I can, but it would be
good if those with access to other Davinci boards could test.
--
The multi-component commit put the initialisation of
snd_soc_dai.[capture|playback]_dma_data into snd_soc_dai_ops.hw_params of the
McBSP, McASP & VCIF drivers (davinci-i2s.c, davinci-mcasp.c & davinci-vcif.c).
The initialisation had to be moved from the probe function in these drivers
because davinci_*_dai changed from snd_soc_dai to snd_soc_dai_driver.
Unfortunately, the DMA params pointer is needed by davinci_pcm_open (in
davinci-pcm.c) before hw_params is called. I have moved the initialisation to
a new snd_soc_dai_ops.startup function in each of these drivers. This fix
indicates that all platforms that use davinci-pcm must have been broken and
need to test with this fix.
--
The multi-component commit also changed the McBSP driver name from
"davinci-asp" to "davinci-i2s" in davinci-i2s.c without updating the board
level references to the driver name. This change is understandable, as there
is a similarly named "davinci-mcasp" driver in davinci-mcasp.c.
There is probably no 'correct' name for this driver. The DM6446 datasheet
calls it the "ASP" and describes it as a "specialised McBSP". The DM355
datasheet calls it the "ASP" and describes it as a "specialised ASP". The
DM365 datasheet calls it the "McBSP". Rather than fix this problem by
reverting to "davinci-asp", I've elected to avoid future confusion with the
"davinci-mcasp" driver by changing it to "davinci-mcbsp", which is also
consistent with the names of the functions in the driver. There are other
fixes required, so it was never going to be as simple as a revert anyway.
--
The DM365 only has one McBSP port (of the McBSP platforms, only the DM355 has
2 ports), so I've changed the the id of the platform_device from 0 to -1.
--
In davinci-evm.c, the DM6446 EVM can no longer share a snd_soc_dai_link
structure with the DM355 EVM as they use different cpu DAI names (the DM355
has 2 ports and the EVM uses the second port, but the DM6446 only has 1 port).
This also means that the 2 boards need different snd_soc_card structures.
--
The codec_name entries in davinci-evm.c didn't match the i2c ids in the board
files. I have only checked and fixed the details of the names used for the
McBSP based platforms. Someone with a McASP based platform (eg DA8xx) should
check the others.
Signed-off-by: Chris Paulson-Ellis <chris@edesix.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-11-16 13:27:09 +01:00
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.startup = davinci_vcif_startup,
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2010-03-11 16:32:42 +01:00
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.trigger = davinci_vcif_trigger,
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.hw_params = davinci_vcif_hw_params,
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};
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2010-03-17 21:15:21 +01:00
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static struct snd_soc_dai_driver davinci_vcif_dai = {
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2010-03-11 16:32:42 +01:00
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.playback = {
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.channels_min = 1,
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.channels_max = 2,
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.rates = DAVINCI_VCIF_RATES,
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.formats = SNDRV_PCM_FMTBIT_S16_LE,},
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.capture = {
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.channels_min = 1,
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.channels_max = 2,
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.rates = DAVINCI_VCIF_RATES,
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.formats = SNDRV_PCM_FMTBIT_S16_LE,},
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.ops = &davinci_vcif_dai_ops,
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};
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2013-03-21 11:31:07 +01:00
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static const struct snd_soc_component_driver davinci_vcif_component = {
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.name = "davinci-vcif",
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};
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2010-03-11 16:32:42 +01:00
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static int davinci_vcif_probe(struct platform_device *pdev)
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{
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2011-04-06 16:39:45 +02:00
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struct davinci_vc *davinci_vc = pdev->dev.platform_data;
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2010-03-11 16:32:42 +01:00
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struct davinci_vcif_dev *davinci_vcif_dev;
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int ret;
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2011-12-29 17:51:20 +01:00
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davinci_vcif_dev = devm_kzalloc(&pdev->dev,
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sizeof(struct davinci_vcif_dev),
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GFP_KERNEL);
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2010-07-16 18:16:17 +02:00
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if (!davinci_vcif_dev) {
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2010-03-11 16:32:42 +01:00
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dev_dbg(&pdev->dev,
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"could not allocate memory for private data\n");
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return -ENOMEM;
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}
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/* DMA tx params */
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davinci_vcif_dev->davinci_vc = davinci_vc;
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davinci_vcif_dev->dma_params[SNDRV_PCM_STREAM_PLAYBACK].channel =
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davinci_vc->davinci_vcif.dma_tx_channel;
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davinci_vcif_dev->dma_params[SNDRV_PCM_STREAM_PLAYBACK].dma_addr =
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davinci_vc->davinci_vcif.dma_tx_addr;
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/* DMA rx params */
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davinci_vcif_dev->dma_params[SNDRV_PCM_STREAM_CAPTURE].channel =
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davinci_vc->davinci_vcif.dma_rx_channel;
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davinci_vcif_dev->dma_params[SNDRV_PCM_STREAM_CAPTURE].dma_addr =
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davinci_vc->davinci_vcif.dma_rx_addr;
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2010-03-17 21:15:21 +01:00
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dev_set_drvdata(&pdev->dev, davinci_vcif_dev);
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2010-03-11 16:32:42 +01:00
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2013-03-21 11:31:07 +01:00
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ret = snd_soc_register_component(&pdev->dev, &davinci_vcif_component,
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&davinci_vcif_dai, 1);
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2010-03-11 16:32:42 +01:00
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if (ret != 0) {
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dev_err(&pdev->dev, "could not register dai\n");
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2011-12-29 17:51:20 +01:00
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|
return ret;
|
2010-03-11 16:32:42 +01:00
|
|
|
}
|
|
|
|
|
2012-08-27 15:26:39 +02:00
|
|
|
ret = davinci_soc_platform_register(&pdev->dev);
|
|
|
|
if (ret) {
|
|
|
|
dev_err(&pdev->dev, "register PCM failed: %d\n", ret);
|
2013-03-21 11:31:07 +01:00
|
|
|
snd_soc_unregister_component(&pdev->dev);
|
2012-08-27 15:26:39 +02:00
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2010-03-11 16:32:42 +01:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int davinci_vcif_remove(struct platform_device *pdev)
|
|
|
|
{
|
2013-03-21 11:31:07 +01:00
|
|
|
snd_soc_unregister_component(&pdev->dev);
|
2012-08-27 15:26:39 +02:00
|
|
|
davinci_soc_platform_unregister(&pdev->dev);
|
2010-03-11 16:32:42 +01:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct platform_driver davinci_vcif_driver = {
|
|
|
|
.probe = davinci_vcif_probe,
|
|
|
|
.remove = davinci_vcif_remove,
|
|
|
|
.driver = {
|
2010-03-17 21:15:21 +01:00
|
|
|
.name = "davinci-vcif",
|
2010-03-11 16:32:42 +01:00
|
|
|
.owner = THIS_MODULE,
|
|
|
|
},
|
|
|
|
};
|
|
|
|
|
2011-11-25 03:09:27 +01:00
|
|
|
module_platform_driver(davinci_vcif_driver);
|
2010-03-11 16:32:42 +01:00
|
|
|
|
|
|
|
MODULE_AUTHOR("Miguel Aguilar");
|
|
|
|
MODULE_DESCRIPTION("Texas Instruments DaVinci ASoC Voice Codec Interface");
|
|
|
|
MODULE_LICENSE("GPL");
|