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![Takashi Iwai](/assets/img/avatar_default.png)
Convert from snd_card_new() to the new snd_card_create() function in other sound subdirectories. Signed-off-by: Takashi Iwai <tiwai@suse.de>
1130 lines
28 KiB
C
1130 lines
28 KiB
C
/*
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* Driver for AT73C213 16-bit stereo DAC connected to Atmel SSC
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*
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* Copyright (C) 2006-2007 Atmel Norway
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*/
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/*#define DEBUG*/
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#include <linux/clk.h>
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#include <linux/err.h>
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#include <linux/delay.h>
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#include <linux/device.h>
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#include <linux/dma-mapping.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/module.h>
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#include <linux/mutex.h>
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#include <linux/platform_device.h>
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#include <linux/io.h>
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#include <sound/initval.h>
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#include <sound/control.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <linux/atmel-ssc.h>
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#include <linux/spi/spi.h>
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#include <linux/spi/at73c213.h>
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#include "at73c213.h"
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#define BITRATE_MIN 8000 /* Hardware limit? */
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#define BITRATE_TARGET CONFIG_SND_AT73C213_TARGET_BITRATE
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#define BITRATE_MAX 50000 /* Hardware limit. */
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/* Initial (hardware reset) AT73C213 register values. */
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static u8 snd_at73c213_original_image[18] =
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{
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0x00, /* 00 - CTRL */
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0x05, /* 01 - LLIG */
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0x05, /* 02 - RLIG */
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0x08, /* 03 - LPMG */
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0x08, /* 04 - RPMG */
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0x00, /* 05 - LLOG */
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0x00, /* 06 - RLOG */
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0x22, /* 07 - OLC */
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0x09, /* 08 - MC */
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0x00, /* 09 - CSFC */
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0x00, /* 0A - MISC */
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0x00, /* 0B - */
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0x00, /* 0C - PRECH */
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0x05, /* 0D - AUXG */
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0x00, /* 0E - */
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0x00, /* 0F - */
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0x00, /* 10 - RST */
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0x00, /* 11 - PA_CTRL */
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};
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struct snd_at73c213 {
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struct snd_card *card;
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struct snd_pcm *pcm;
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struct snd_pcm_substream *substream;
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struct at73c213_board_info *board;
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int irq;
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int period;
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unsigned long bitrate;
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struct clk *bitclk;
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struct ssc_device *ssc;
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struct spi_device *spi;
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u8 spi_wbuffer[2];
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u8 spi_rbuffer[2];
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/* Image of the SPI registers in AT73C213. */
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u8 reg_image[18];
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/* Protect SSC registers against concurrent access. */
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spinlock_t lock;
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/* Protect mixer registers against concurrent access. */
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struct mutex mixer_lock;
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};
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#define get_chip(card) ((struct snd_at73c213 *)card->private_data)
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static int
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snd_at73c213_write_reg(struct snd_at73c213 *chip, u8 reg, u8 val)
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{
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struct spi_message msg;
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struct spi_transfer msg_xfer = {
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.len = 2,
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.cs_change = 0,
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};
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int retval;
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spi_message_init(&msg);
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chip->spi_wbuffer[0] = reg;
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chip->spi_wbuffer[1] = val;
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msg_xfer.tx_buf = chip->spi_wbuffer;
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msg_xfer.rx_buf = chip->spi_rbuffer;
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spi_message_add_tail(&msg_xfer, &msg);
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retval = spi_sync(chip->spi, &msg);
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if (!retval)
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chip->reg_image[reg] = val;
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return retval;
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}
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static struct snd_pcm_hardware snd_at73c213_playback_hw = {
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.info = SNDRV_PCM_INFO_INTERLEAVED |
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SNDRV_PCM_INFO_BLOCK_TRANSFER,
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.formats = SNDRV_PCM_FMTBIT_S16_BE,
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.rates = SNDRV_PCM_RATE_CONTINUOUS,
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.rate_min = 8000, /* Replaced by chip->bitrate later. */
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.rate_max = 50000, /* Replaced by chip->bitrate later. */
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.channels_min = 1,
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.channels_max = 2,
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.buffer_bytes_max = 64 * 1024 - 1,
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.period_bytes_min = 512,
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.period_bytes_max = 64 * 1024 - 1,
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.periods_min = 4,
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.periods_max = 1024,
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};
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/*
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* Calculate and set bitrate and divisions.
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*/
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static int snd_at73c213_set_bitrate(struct snd_at73c213 *chip)
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{
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unsigned long ssc_rate = clk_get_rate(chip->ssc->clk);
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unsigned long dac_rate_new, ssc_div;
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int status;
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unsigned long ssc_div_max, ssc_div_min;
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int max_tries;
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/*
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* We connect two clocks here, picking divisors so the I2S clocks
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* out data at the same rate the DAC clocks it in ... and as close
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* as practical to the desired target rate.
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*
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* The DAC master clock (MCLK) is programmable, and is either 256
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* or (not here) 384 times the I2S output clock (BCLK).
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*/
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/* SSC clock / (bitrate * stereo * 16-bit). */
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ssc_div = ssc_rate / (BITRATE_TARGET * 2 * 16);
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ssc_div_min = ssc_rate / (BITRATE_MAX * 2 * 16);
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ssc_div_max = ssc_rate / (BITRATE_MIN * 2 * 16);
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max_tries = (ssc_div_max - ssc_div_min) / 2;
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if (max_tries < 1)
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max_tries = 1;
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/* ssc_div must be a power of 2. */
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ssc_div = (ssc_div + 1) & ~1UL;
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if ((ssc_rate / (ssc_div * 2 * 16)) < BITRATE_MIN) {
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ssc_div -= 2;
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if ((ssc_rate / (ssc_div * 2 * 16)) > BITRATE_MAX)
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return -ENXIO;
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}
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/* Search for a possible bitrate. */
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do {
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/* SSC clock / (ssc divider * 16-bit * stereo). */
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if ((ssc_rate / (ssc_div * 2 * 16)) < BITRATE_MIN)
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return -ENXIO;
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/* 256 / (2 * 16) = 8 */
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dac_rate_new = 8 * (ssc_rate / ssc_div);
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status = clk_round_rate(chip->board->dac_clk, dac_rate_new);
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if (status < 0)
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return status;
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/* Ignore difference smaller than 256 Hz. */
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if ((status/256) == (dac_rate_new/256))
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goto set_rate;
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ssc_div += 2;
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} while (--max_tries);
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/* Not able to find a valid bitrate. */
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return -ENXIO;
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set_rate:
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status = clk_set_rate(chip->board->dac_clk, status);
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if (status < 0)
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return status;
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/* Set divider in SSC device. */
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ssc_writel(chip->ssc->regs, CMR, ssc_div/2);
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/* SSC clock / (ssc divider * 16-bit * stereo). */
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chip->bitrate = ssc_rate / (ssc_div * 16 * 2);
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dev_info(&chip->spi->dev,
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"at73c213: supported bitrate is %lu (%lu divider)\n",
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chip->bitrate, ssc_div);
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return 0;
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}
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static int snd_at73c213_pcm_open(struct snd_pcm_substream *substream)
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{
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struct snd_at73c213 *chip = snd_pcm_substream_chip(substream);
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struct snd_pcm_runtime *runtime = substream->runtime;
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int err;
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/* ensure buffer_size is a multiple of period_size */
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err = snd_pcm_hw_constraint_integer(runtime,
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SNDRV_PCM_HW_PARAM_PERIODS);
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if (err < 0)
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return err;
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snd_at73c213_playback_hw.rate_min = chip->bitrate;
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snd_at73c213_playback_hw.rate_max = chip->bitrate;
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runtime->hw = snd_at73c213_playback_hw;
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chip->substream = substream;
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return 0;
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}
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static int snd_at73c213_pcm_close(struct snd_pcm_substream *substream)
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{
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struct snd_at73c213 *chip = snd_pcm_substream_chip(substream);
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chip->substream = NULL;
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return 0;
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}
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static int snd_at73c213_pcm_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *hw_params)
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{
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struct snd_at73c213 *chip = snd_pcm_substream_chip(substream);
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int channels = params_channels(hw_params);
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int val;
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val = ssc_readl(chip->ssc->regs, TFMR);
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val = SSC_BFINS(TFMR_DATNB, channels - 1, val);
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ssc_writel(chip->ssc->regs, TFMR, val);
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return snd_pcm_lib_malloc_pages(substream,
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params_buffer_bytes(hw_params));
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}
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static int snd_at73c213_pcm_hw_free(struct snd_pcm_substream *substream)
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{
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return snd_pcm_lib_free_pages(substream);
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}
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static int snd_at73c213_pcm_prepare(struct snd_pcm_substream *substream)
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{
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struct snd_at73c213 *chip = snd_pcm_substream_chip(substream);
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struct snd_pcm_runtime *runtime = substream->runtime;
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int block_size;
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block_size = frames_to_bytes(runtime, runtime->period_size);
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chip->period = 0;
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ssc_writel(chip->ssc->regs, PDC_TPR,
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(long)runtime->dma_addr);
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ssc_writel(chip->ssc->regs, PDC_TCR,
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runtime->period_size * runtime->channels);
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ssc_writel(chip->ssc->regs, PDC_TNPR,
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(long)runtime->dma_addr + block_size);
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ssc_writel(chip->ssc->regs, PDC_TNCR,
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runtime->period_size * runtime->channels);
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return 0;
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}
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static int snd_at73c213_pcm_trigger(struct snd_pcm_substream *substream,
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int cmd)
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{
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struct snd_at73c213 *chip = snd_pcm_substream_chip(substream);
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int retval = 0;
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spin_lock(&chip->lock);
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switch (cmd) {
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case SNDRV_PCM_TRIGGER_START:
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ssc_writel(chip->ssc->regs, IER, SSC_BIT(IER_ENDTX));
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ssc_writel(chip->ssc->regs, PDC_PTCR, SSC_BIT(PDC_PTCR_TXTEN));
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break;
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case SNDRV_PCM_TRIGGER_STOP:
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ssc_writel(chip->ssc->regs, PDC_PTCR, SSC_BIT(PDC_PTCR_TXTDIS));
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ssc_writel(chip->ssc->regs, IDR, SSC_BIT(IDR_ENDTX));
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break;
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default:
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dev_dbg(&chip->spi->dev, "spurious command %x\n", cmd);
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retval = -EINVAL;
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break;
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}
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spin_unlock(&chip->lock);
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return retval;
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}
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static snd_pcm_uframes_t
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snd_at73c213_pcm_pointer(struct snd_pcm_substream *substream)
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{
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struct snd_at73c213 *chip = snd_pcm_substream_chip(substream);
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struct snd_pcm_runtime *runtime = substream->runtime;
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snd_pcm_uframes_t pos;
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unsigned long bytes;
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bytes = ssc_readl(chip->ssc->regs, PDC_TPR)
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- (unsigned long)runtime->dma_addr;
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pos = bytes_to_frames(runtime, bytes);
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if (pos >= runtime->buffer_size)
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pos -= runtime->buffer_size;
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return pos;
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}
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static struct snd_pcm_ops at73c213_playback_ops = {
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.open = snd_at73c213_pcm_open,
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.close = snd_at73c213_pcm_close,
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.ioctl = snd_pcm_lib_ioctl,
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.hw_params = snd_at73c213_pcm_hw_params,
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.hw_free = snd_at73c213_pcm_hw_free,
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.prepare = snd_at73c213_pcm_prepare,
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.trigger = snd_at73c213_pcm_trigger,
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.pointer = snd_at73c213_pcm_pointer,
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};
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static int __devinit snd_at73c213_pcm_new(struct snd_at73c213 *chip, int device)
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{
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struct snd_pcm *pcm;
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int retval;
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retval = snd_pcm_new(chip->card, chip->card->shortname,
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device, 1, 0, &pcm);
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if (retval < 0)
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goto out;
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pcm->private_data = chip;
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pcm->info_flags = SNDRV_PCM_INFO_BLOCK_TRANSFER;
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strcpy(pcm->name, "at73c213");
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chip->pcm = pcm;
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snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &at73c213_playback_ops);
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retval = snd_pcm_lib_preallocate_pages_for_all(chip->pcm,
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SNDRV_DMA_TYPE_DEV, &chip->ssc->pdev->dev,
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64 * 1024, 64 * 1024);
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out:
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return retval;
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}
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static irqreturn_t snd_at73c213_interrupt(int irq, void *dev_id)
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{
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struct snd_at73c213 *chip = dev_id;
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struct snd_pcm_runtime *runtime = chip->substream->runtime;
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u32 status;
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int offset;
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int block_size;
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int next_period;
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int retval = IRQ_NONE;
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spin_lock(&chip->lock);
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block_size = frames_to_bytes(runtime, runtime->period_size);
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status = ssc_readl(chip->ssc->regs, IMR);
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if (status & SSC_BIT(IMR_ENDTX)) {
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chip->period++;
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if (chip->period == runtime->periods)
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chip->period = 0;
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next_period = chip->period + 1;
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if (next_period == runtime->periods)
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next_period = 0;
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offset = block_size * next_period;
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ssc_writel(chip->ssc->regs, PDC_TNPR,
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(long)runtime->dma_addr + offset);
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ssc_writel(chip->ssc->regs, PDC_TNCR,
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runtime->period_size * runtime->channels);
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retval = IRQ_HANDLED;
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}
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ssc_readl(chip->ssc->regs, IMR);
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spin_unlock(&chip->lock);
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if (status & SSC_BIT(IMR_ENDTX))
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snd_pcm_period_elapsed(chip->substream);
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return retval;
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}
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/*
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* Mixer functions.
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*/
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static int snd_at73c213_mono_get(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_at73c213 *chip = snd_kcontrol_chip(kcontrol);
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int reg = kcontrol->private_value & 0xff;
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int shift = (kcontrol->private_value >> 8) & 0xff;
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int mask = (kcontrol->private_value >> 16) & 0xff;
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int invert = (kcontrol->private_value >> 24) & 0xff;
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mutex_lock(&chip->mixer_lock);
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ucontrol->value.integer.value[0] =
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(chip->reg_image[reg] >> shift) & mask;
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if (invert)
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ucontrol->value.integer.value[0] =
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mask - ucontrol->value.integer.value[0];
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mutex_unlock(&chip->mixer_lock);
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return 0;
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}
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static int snd_at73c213_mono_put(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_at73c213 *chip = snd_kcontrol_chip(kcontrol);
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int reg = kcontrol->private_value & 0xff;
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int shift = (kcontrol->private_value >> 8) & 0xff;
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int mask = (kcontrol->private_value >> 16) & 0xff;
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int invert = (kcontrol->private_value >> 24) & 0xff;
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int change, retval;
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unsigned short val;
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val = (ucontrol->value.integer.value[0] & mask);
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if (invert)
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val = mask - val;
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val <<= shift;
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mutex_lock(&chip->mixer_lock);
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val = (chip->reg_image[reg] & ~(mask << shift)) | val;
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change = val != chip->reg_image[reg];
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retval = snd_at73c213_write_reg(chip, reg, val);
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mutex_unlock(&chip->mixer_lock);
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if (retval)
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return retval;
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return change;
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}
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static int snd_at73c213_stereo_info(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_info *uinfo)
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{
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int mask = (kcontrol->private_value >> 24) & 0xff;
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if (mask == 1)
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uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
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else
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uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
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uinfo->count = 2;
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uinfo->value.integer.min = 0;
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uinfo->value.integer.max = mask;
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return 0;
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}
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static int snd_at73c213_stereo_get(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_at73c213 *chip = snd_kcontrol_chip(kcontrol);
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int left_reg = kcontrol->private_value & 0xff;
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int right_reg = (kcontrol->private_value >> 8) & 0xff;
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int shift_left = (kcontrol->private_value >> 16) & 0x07;
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int shift_right = (kcontrol->private_value >> 19) & 0x07;
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int mask = (kcontrol->private_value >> 24) & 0xff;
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int invert = (kcontrol->private_value >> 22) & 1;
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mutex_lock(&chip->mixer_lock);
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ucontrol->value.integer.value[0] =
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(chip->reg_image[left_reg] >> shift_left) & mask;
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ucontrol->value.integer.value[1] =
|
|
(chip->reg_image[right_reg] >> shift_right) & mask;
|
|
|
|
if (invert) {
|
|
ucontrol->value.integer.value[0] =
|
|
mask - ucontrol->value.integer.value[0];
|
|
ucontrol->value.integer.value[1] =
|
|
mask - ucontrol->value.integer.value[1];
|
|
}
|
|
|
|
mutex_unlock(&chip->mixer_lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int snd_at73c213_stereo_put(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct snd_at73c213 *chip = snd_kcontrol_chip(kcontrol);
|
|
int left_reg = kcontrol->private_value & 0xff;
|
|
int right_reg = (kcontrol->private_value >> 8) & 0xff;
|
|
int shift_left = (kcontrol->private_value >> 16) & 0x07;
|
|
int shift_right = (kcontrol->private_value >> 19) & 0x07;
|
|
int mask = (kcontrol->private_value >> 24) & 0xff;
|
|
int invert = (kcontrol->private_value >> 22) & 1;
|
|
int change, retval;
|
|
unsigned short val1, val2;
|
|
|
|
val1 = ucontrol->value.integer.value[0] & mask;
|
|
val2 = ucontrol->value.integer.value[1] & mask;
|
|
if (invert) {
|
|
val1 = mask - val1;
|
|
val2 = mask - val2;
|
|
}
|
|
val1 <<= shift_left;
|
|
val2 <<= shift_right;
|
|
|
|
mutex_lock(&chip->mixer_lock);
|
|
|
|
val1 = (chip->reg_image[left_reg] & ~(mask << shift_left)) | val1;
|
|
val2 = (chip->reg_image[right_reg] & ~(mask << shift_right)) | val2;
|
|
change = val1 != chip->reg_image[left_reg]
|
|
|| val2 != chip->reg_image[right_reg];
|
|
retval = snd_at73c213_write_reg(chip, left_reg, val1);
|
|
if (retval) {
|
|
mutex_unlock(&chip->mixer_lock);
|
|
goto out;
|
|
}
|
|
retval = snd_at73c213_write_reg(chip, right_reg, val2);
|
|
if (retval) {
|
|
mutex_unlock(&chip->mixer_lock);
|
|
goto out;
|
|
}
|
|
|
|
mutex_unlock(&chip->mixer_lock);
|
|
|
|
return change;
|
|
|
|
out:
|
|
return retval;
|
|
}
|
|
|
|
#define snd_at73c213_mono_switch_info snd_ctl_boolean_mono_info
|
|
|
|
static int snd_at73c213_mono_switch_get(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct snd_at73c213 *chip = snd_kcontrol_chip(kcontrol);
|
|
int reg = kcontrol->private_value & 0xff;
|
|
int shift = (kcontrol->private_value >> 8) & 0xff;
|
|
int invert = (kcontrol->private_value >> 24) & 0xff;
|
|
|
|
mutex_lock(&chip->mixer_lock);
|
|
|
|
ucontrol->value.integer.value[0] =
|
|
(chip->reg_image[reg] >> shift) & 0x01;
|
|
|
|
if (invert)
|
|
ucontrol->value.integer.value[0] =
|
|
0x01 - ucontrol->value.integer.value[0];
|
|
|
|
mutex_unlock(&chip->mixer_lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int snd_at73c213_mono_switch_put(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct snd_at73c213 *chip = snd_kcontrol_chip(kcontrol);
|
|
int reg = kcontrol->private_value & 0xff;
|
|
int shift = (kcontrol->private_value >> 8) & 0xff;
|
|
int mask = (kcontrol->private_value >> 16) & 0xff;
|
|
int invert = (kcontrol->private_value >> 24) & 0xff;
|
|
int change, retval;
|
|
unsigned short val;
|
|
|
|
if (ucontrol->value.integer.value[0])
|
|
val = mask;
|
|
else
|
|
val = 0;
|
|
|
|
if (invert)
|
|
val = mask - val;
|
|
val <<= shift;
|
|
|
|
mutex_lock(&chip->mixer_lock);
|
|
|
|
val |= (chip->reg_image[reg] & ~(mask << shift));
|
|
change = val != chip->reg_image[reg];
|
|
|
|
retval = snd_at73c213_write_reg(chip, reg, val);
|
|
|
|
mutex_unlock(&chip->mixer_lock);
|
|
|
|
if (retval)
|
|
return retval;
|
|
|
|
return change;
|
|
}
|
|
|
|
static int snd_at73c213_pa_volume_info(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_info *uinfo)
|
|
{
|
|
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
|
|
uinfo->count = 1;
|
|
uinfo->value.integer.min = 0;
|
|
uinfo->value.integer.max = ((kcontrol->private_value >> 16) & 0xff) - 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int snd_at73c213_line_capture_volume_info(
|
|
struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_info *uinfo)
|
|
{
|
|
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
|
|
uinfo->count = 2;
|
|
/* When inverted will give values 0x10001 => 0. */
|
|
uinfo->value.integer.min = 14;
|
|
uinfo->value.integer.max = 31;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int snd_at73c213_aux_capture_volume_info(
|
|
struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_info *uinfo)
|
|
{
|
|
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
|
|
uinfo->count = 1;
|
|
/* When inverted will give values 0x10001 => 0. */
|
|
uinfo->value.integer.min = 14;
|
|
uinfo->value.integer.max = 31;
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define AT73C213_MONO_SWITCH(xname, xindex, reg, shift, mask, invert) \
|
|
{ \
|
|
.iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
|
|
.name = xname, \
|
|
.index = xindex, \
|
|
.info = snd_at73c213_mono_switch_info, \
|
|
.get = snd_at73c213_mono_switch_get, \
|
|
.put = snd_at73c213_mono_switch_put, \
|
|
.private_value = (reg | (shift << 8) | (mask << 16) | (invert << 24)) \
|
|
}
|
|
|
|
#define AT73C213_STEREO(xname, xindex, left_reg, right_reg, shift_left, shift_right, mask, invert) \
|
|
{ \
|
|
.iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
|
|
.name = xname, \
|
|
.index = xindex, \
|
|
.info = snd_at73c213_stereo_info, \
|
|
.get = snd_at73c213_stereo_get, \
|
|
.put = snd_at73c213_stereo_put, \
|
|
.private_value = (left_reg | (right_reg << 8) \
|
|
| (shift_left << 16) | (shift_right << 19) \
|
|
| (mask << 24) | (invert << 22)) \
|
|
}
|
|
|
|
static struct snd_kcontrol_new snd_at73c213_controls[] __devinitdata = {
|
|
AT73C213_STEREO("Master Playback Volume", 0, DAC_LMPG, DAC_RMPG, 0, 0, 0x1f, 1),
|
|
AT73C213_STEREO("Master Playback Switch", 0, DAC_LMPG, DAC_RMPG, 5, 5, 1, 1),
|
|
AT73C213_STEREO("PCM Playback Volume", 0, DAC_LLOG, DAC_RLOG, 0, 0, 0x1f, 1),
|
|
AT73C213_STEREO("PCM Playback Switch", 0, DAC_LLOG, DAC_RLOG, 5, 5, 1, 1),
|
|
AT73C213_MONO_SWITCH("Mono PA Playback Switch", 0, DAC_CTRL, DAC_CTRL_ONPADRV,
|
|
0x01, 0),
|
|
{
|
|
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
|
|
.name = "PA Playback Volume",
|
|
.index = 0,
|
|
.info = snd_at73c213_pa_volume_info,
|
|
.get = snd_at73c213_mono_get,
|
|
.put = snd_at73c213_mono_put,
|
|
.private_value = PA_CTRL | (PA_CTRL_APAGAIN << 8) | \
|
|
(0x0f << 16) | (1 << 24),
|
|
},
|
|
AT73C213_MONO_SWITCH("PA High Gain Playback Switch", 0, PA_CTRL, PA_CTRL_APALP,
|
|
0x01, 1),
|
|
AT73C213_MONO_SWITCH("PA Playback Switch", 0, PA_CTRL, PA_CTRL_APAON, 0x01, 0),
|
|
{
|
|
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
|
|
.name = "Aux Capture Volume",
|
|
.index = 0,
|
|
.info = snd_at73c213_aux_capture_volume_info,
|
|
.get = snd_at73c213_mono_get,
|
|
.put = snd_at73c213_mono_put,
|
|
.private_value = DAC_AUXG | (0 << 8) | (0x1f << 16) | (1 << 24),
|
|
},
|
|
AT73C213_MONO_SWITCH("Aux Capture Switch", 0, DAC_CTRL, DAC_CTRL_ONAUXIN,
|
|
0x01, 0),
|
|
{
|
|
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
|
|
.name = "Line Capture Volume",
|
|
.index = 0,
|
|
.info = snd_at73c213_line_capture_volume_info,
|
|
.get = snd_at73c213_stereo_get,
|
|
.put = snd_at73c213_stereo_put,
|
|
.private_value = DAC_LLIG | (DAC_RLIG << 8) | (0 << 16) | (0 << 19)
|
|
| (0x1f << 24) | (1 << 22),
|
|
},
|
|
AT73C213_MONO_SWITCH("Line Capture Switch", 0, DAC_CTRL, 0, 0x03, 0),
|
|
};
|
|
|
|
static int __devinit snd_at73c213_mixer(struct snd_at73c213 *chip)
|
|
{
|
|
struct snd_card *card;
|
|
int errval, idx;
|
|
|
|
if (chip == NULL || chip->pcm == NULL)
|
|
return -EINVAL;
|
|
|
|
card = chip->card;
|
|
|
|
strcpy(card->mixername, chip->pcm->name);
|
|
|
|
for (idx = 0; idx < ARRAY_SIZE(snd_at73c213_controls); idx++) {
|
|
errval = snd_ctl_add(card,
|
|
snd_ctl_new1(&snd_at73c213_controls[idx],
|
|
chip));
|
|
if (errval < 0)
|
|
goto cleanup;
|
|
}
|
|
|
|
return 0;
|
|
|
|
cleanup:
|
|
for (idx = 1; idx < ARRAY_SIZE(snd_at73c213_controls) + 1; idx++) {
|
|
struct snd_kcontrol *kctl;
|
|
kctl = snd_ctl_find_numid(card, idx);
|
|
if (kctl)
|
|
snd_ctl_remove(card, kctl);
|
|
}
|
|
return errval;
|
|
}
|
|
|
|
/*
|
|
* Device functions
|
|
*/
|
|
static int __devinit snd_at73c213_ssc_init(struct snd_at73c213 *chip)
|
|
{
|
|
/*
|
|
* Continuous clock output.
|
|
* Starts on falling TF.
|
|
* Delay 1 cycle (1 bit).
|
|
* Periode is 16 bit (16 - 1).
|
|
*/
|
|
ssc_writel(chip->ssc->regs, TCMR,
|
|
SSC_BF(TCMR_CKO, 1)
|
|
| SSC_BF(TCMR_START, 4)
|
|
| SSC_BF(TCMR_STTDLY, 1)
|
|
| SSC_BF(TCMR_PERIOD, 16 - 1));
|
|
/*
|
|
* Data length is 16 bit (16 - 1).
|
|
* Transmit MSB first.
|
|
* Transmit 2 words each transfer.
|
|
* Frame sync length is 16 bit (16 - 1).
|
|
* Frame starts on negative pulse.
|
|
*/
|
|
ssc_writel(chip->ssc->regs, TFMR,
|
|
SSC_BF(TFMR_DATLEN, 16 - 1)
|
|
| SSC_BIT(TFMR_MSBF)
|
|
| SSC_BF(TFMR_DATNB, 1)
|
|
| SSC_BF(TFMR_FSLEN, 16 - 1)
|
|
| SSC_BF(TFMR_FSOS, 1));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __devinit snd_at73c213_chip_init(struct snd_at73c213 *chip)
|
|
{
|
|
int retval;
|
|
unsigned char dac_ctrl = 0;
|
|
|
|
retval = snd_at73c213_set_bitrate(chip);
|
|
if (retval)
|
|
goto out;
|
|
|
|
/* Enable DAC master clock. */
|
|
clk_enable(chip->board->dac_clk);
|
|
|
|
/* Initialize at73c213 on SPI bus. */
|
|
retval = snd_at73c213_write_reg(chip, DAC_RST, 0x04);
|
|
if (retval)
|
|
goto out_clk;
|
|
msleep(1);
|
|
retval = snd_at73c213_write_reg(chip, DAC_RST, 0x03);
|
|
if (retval)
|
|
goto out_clk;
|
|
|
|
/* Precharge everything. */
|
|
retval = snd_at73c213_write_reg(chip, DAC_PRECH, 0xff);
|
|
if (retval)
|
|
goto out_clk;
|
|
retval = snd_at73c213_write_reg(chip, PA_CTRL, (1<<PA_CTRL_APAPRECH));
|
|
if (retval)
|
|
goto out_clk;
|
|
retval = snd_at73c213_write_reg(chip, DAC_CTRL,
|
|
(1<<DAC_CTRL_ONLNOL) | (1<<DAC_CTRL_ONLNOR));
|
|
if (retval)
|
|
goto out_clk;
|
|
|
|
msleep(50);
|
|
|
|
/* Stop precharging PA. */
|
|
retval = snd_at73c213_write_reg(chip, PA_CTRL,
|
|
(1<<PA_CTRL_APALP) | 0x0f);
|
|
if (retval)
|
|
goto out_clk;
|
|
|
|
msleep(450);
|
|
|
|
/* Stop precharging DAC, turn on master power. */
|
|
retval = snd_at73c213_write_reg(chip, DAC_PRECH, (1<<DAC_PRECH_ONMSTR));
|
|
if (retval)
|
|
goto out_clk;
|
|
|
|
msleep(1);
|
|
|
|
/* Turn on DAC. */
|
|
dac_ctrl = (1<<DAC_CTRL_ONDACL) | (1<<DAC_CTRL_ONDACR)
|
|
| (1<<DAC_CTRL_ONLNOL) | (1<<DAC_CTRL_ONLNOR);
|
|
|
|
retval = snd_at73c213_write_reg(chip, DAC_CTRL, dac_ctrl);
|
|
if (retval)
|
|
goto out_clk;
|
|
|
|
/* Mute sound. */
|
|
retval = snd_at73c213_write_reg(chip, DAC_LMPG, 0x3f);
|
|
if (retval)
|
|
goto out_clk;
|
|
retval = snd_at73c213_write_reg(chip, DAC_RMPG, 0x3f);
|
|
if (retval)
|
|
goto out_clk;
|
|
retval = snd_at73c213_write_reg(chip, DAC_LLOG, 0x3f);
|
|
if (retval)
|
|
goto out_clk;
|
|
retval = snd_at73c213_write_reg(chip, DAC_RLOG, 0x3f);
|
|
if (retval)
|
|
goto out_clk;
|
|
retval = snd_at73c213_write_reg(chip, DAC_LLIG, 0x11);
|
|
if (retval)
|
|
goto out_clk;
|
|
retval = snd_at73c213_write_reg(chip, DAC_RLIG, 0x11);
|
|
if (retval)
|
|
goto out_clk;
|
|
retval = snd_at73c213_write_reg(chip, DAC_AUXG, 0x11);
|
|
if (retval)
|
|
goto out_clk;
|
|
|
|
/* Enable I2S device, i.e. clock output. */
|
|
ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXEN));
|
|
|
|
goto out;
|
|
|
|
out_clk:
|
|
clk_disable(chip->board->dac_clk);
|
|
out:
|
|
return retval;
|
|
}
|
|
|
|
static int snd_at73c213_dev_free(struct snd_device *device)
|
|
{
|
|
struct snd_at73c213 *chip = device->device_data;
|
|
|
|
ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXDIS));
|
|
if (chip->irq >= 0) {
|
|
free_irq(chip->irq, chip);
|
|
chip->irq = -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __devinit snd_at73c213_dev_init(struct snd_card *card,
|
|
struct spi_device *spi)
|
|
{
|
|
static struct snd_device_ops ops = {
|
|
.dev_free = snd_at73c213_dev_free,
|
|
};
|
|
struct snd_at73c213 *chip = get_chip(card);
|
|
int irq, retval;
|
|
|
|
irq = chip->ssc->irq;
|
|
if (irq < 0)
|
|
return irq;
|
|
|
|
spin_lock_init(&chip->lock);
|
|
mutex_init(&chip->mixer_lock);
|
|
chip->card = card;
|
|
chip->irq = -1;
|
|
|
|
retval = request_irq(irq, snd_at73c213_interrupt, 0, "at73c213", chip);
|
|
if (retval) {
|
|
dev_dbg(&chip->spi->dev, "unable to request irq %d\n", irq);
|
|
goto out;
|
|
}
|
|
chip->irq = irq;
|
|
|
|
memcpy(&chip->reg_image, &snd_at73c213_original_image,
|
|
sizeof(snd_at73c213_original_image));
|
|
|
|
retval = snd_at73c213_ssc_init(chip);
|
|
if (retval)
|
|
goto out_irq;
|
|
|
|
retval = snd_at73c213_chip_init(chip);
|
|
if (retval)
|
|
goto out_irq;
|
|
|
|
retval = snd_at73c213_pcm_new(chip, 0);
|
|
if (retval)
|
|
goto out_irq;
|
|
|
|
retval = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
|
|
if (retval)
|
|
goto out_irq;
|
|
|
|
retval = snd_at73c213_mixer(chip);
|
|
if (retval)
|
|
goto out_snd_dev;
|
|
|
|
snd_card_set_dev(card, &spi->dev);
|
|
|
|
goto out;
|
|
|
|
out_snd_dev:
|
|
snd_device_free(card, chip);
|
|
out_irq:
|
|
free_irq(chip->irq, chip);
|
|
chip->irq = -1;
|
|
out:
|
|
return retval;
|
|
}
|
|
|
|
static int __devinit snd_at73c213_probe(struct spi_device *spi)
|
|
{
|
|
struct snd_card *card;
|
|
struct snd_at73c213 *chip;
|
|
struct at73c213_board_info *board;
|
|
int retval;
|
|
char id[16];
|
|
|
|
board = spi->dev.platform_data;
|
|
if (!board) {
|
|
dev_dbg(&spi->dev, "no platform_data\n");
|
|
return -ENXIO;
|
|
}
|
|
|
|
if (!board->dac_clk) {
|
|
dev_dbg(&spi->dev, "no DAC clk\n");
|
|
return -ENXIO;
|
|
}
|
|
|
|
if (IS_ERR(board->dac_clk)) {
|
|
dev_dbg(&spi->dev, "no DAC clk\n");
|
|
return PTR_ERR(board->dac_clk);
|
|
}
|
|
|
|
/* Allocate "card" using some unused identifiers. */
|
|
snprintf(id, sizeof id, "at73c213_%d", board->ssc_id);
|
|
retval = snd_card_create(-1, id, THIS_MODULE,
|
|
sizeof(struct snd_at73c213), &card);
|
|
if (retval < 0)
|
|
goto out;
|
|
|
|
chip = card->private_data;
|
|
chip->spi = spi;
|
|
chip->board = board;
|
|
|
|
chip->ssc = ssc_request(board->ssc_id);
|
|
if (IS_ERR(chip->ssc)) {
|
|
dev_dbg(&spi->dev, "could not get ssc%d device\n",
|
|
board->ssc_id);
|
|
retval = PTR_ERR(chip->ssc);
|
|
goto out_card;
|
|
}
|
|
|
|
retval = snd_at73c213_dev_init(card, spi);
|
|
if (retval)
|
|
goto out_ssc;
|
|
|
|
strcpy(card->driver, "at73c213");
|
|
strcpy(card->shortname, board->shortname);
|
|
sprintf(card->longname, "%s on irq %d", card->shortname, chip->irq);
|
|
|
|
retval = snd_card_register(card);
|
|
if (retval)
|
|
goto out_ssc;
|
|
|
|
dev_set_drvdata(&spi->dev, card);
|
|
|
|
goto out;
|
|
|
|
out_ssc:
|
|
ssc_free(chip->ssc);
|
|
out_card:
|
|
snd_card_free(card);
|
|
out:
|
|
return retval;
|
|
}
|
|
|
|
static int __devexit snd_at73c213_remove(struct spi_device *spi)
|
|
{
|
|
struct snd_card *card = dev_get_drvdata(&spi->dev);
|
|
struct snd_at73c213 *chip = card->private_data;
|
|
int retval;
|
|
|
|
/* Stop playback. */
|
|
ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXDIS));
|
|
|
|
/* Mute sound. */
|
|
retval = snd_at73c213_write_reg(chip, DAC_LMPG, 0x3f);
|
|
if (retval)
|
|
goto out;
|
|
retval = snd_at73c213_write_reg(chip, DAC_RMPG, 0x3f);
|
|
if (retval)
|
|
goto out;
|
|
retval = snd_at73c213_write_reg(chip, DAC_LLOG, 0x3f);
|
|
if (retval)
|
|
goto out;
|
|
retval = snd_at73c213_write_reg(chip, DAC_RLOG, 0x3f);
|
|
if (retval)
|
|
goto out;
|
|
retval = snd_at73c213_write_reg(chip, DAC_LLIG, 0x11);
|
|
if (retval)
|
|
goto out;
|
|
retval = snd_at73c213_write_reg(chip, DAC_RLIG, 0x11);
|
|
if (retval)
|
|
goto out;
|
|
retval = snd_at73c213_write_reg(chip, DAC_AUXG, 0x11);
|
|
if (retval)
|
|
goto out;
|
|
|
|
/* Turn off PA. */
|
|
retval = snd_at73c213_write_reg(chip, PA_CTRL,
|
|
chip->reg_image[PA_CTRL] | 0x0f);
|
|
if (retval)
|
|
goto out;
|
|
msleep(10);
|
|
retval = snd_at73c213_write_reg(chip, PA_CTRL,
|
|
(1 << PA_CTRL_APALP) | 0x0f);
|
|
if (retval)
|
|
goto out;
|
|
|
|
/* Turn off external DAC. */
|
|
retval = snd_at73c213_write_reg(chip, DAC_CTRL, 0x0c);
|
|
if (retval)
|
|
goto out;
|
|
msleep(2);
|
|
retval = snd_at73c213_write_reg(chip, DAC_CTRL, 0x00);
|
|
if (retval)
|
|
goto out;
|
|
|
|
/* Turn off master power. */
|
|
retval = snd_at73c213_write_reg(chip, DAC_PRECH, 0x00);
|
|
if (retval)
|
|
goto out;
|
|
|
|
out:
|
|
/* Stop DAC master clock. */
|
|
clk_disable(chip->board->dac_clk);
|
|
|
|
ssc_free(chip->ssc);
|
|
snd_card_free(card);
|
|
dev_set_drvdata(&spi->dev, NULL);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
static int snd_at73c213_suspend(struct spi_device *spi, pm_message_t msg)
|
|
{
|
|
struct snd_card *card = dev_get_drvdata(&spi->dev);
|
|
struct snd_at73c213 *chip = card->private_data;
|
|
|
|
ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXDIS));
|
|
clk_disable(chip->board->dac_clk);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int snd_at73c213_resume(struct spi_device *spi)
|
|
{
|
|
struct snd_card *card = dev_get_drvdata(&spi->dev);
|
|
struct snd_at73c213 *chip = card->private_data;
|
|
|
|
clk_enable(chip->board->dac_clk);
|
|
ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXEN));
|
|
|
|
return 0;
|
|
}
|
|
#else
|
|
#define snd_at73c213_suspend NULL
|
|
#define snd_at73c213_resume NULL
|
|
#endif
|
|
|
|
static struct spi_driver at73c213_driver = {
|
|
.driver = {
|
|
.name = "at73c213",
|
|
},
|
|
.probe = snd_at73c213_probe,
|
|
.suspend = snd_at73c213_suspend,
|
|
.resume = snd_at73c213_resume,
|
|
.remove = __devexit_p(snd_at73c213_remove),
|
|
};
|
|
|
|
static int __init at73c213_init(void)
|
|
{
|
|
return spi_register_driver(&at73c213_driver);
|
|
}
|
|
module_init(at73c213_init);
|
|
|
|
static void __exit at73c213_exit(void)
|
|
{
|
|
spi_unregister_driver(&at73c213_driver);
|
|
}
|
|
module_exit(at73c213_exit);
|
|
|
|
MODULE_AUTHOR("Hans-Christian Egtvedt <hcegtvedt@atmel.com>");
|
|
MODULE_DESCRIPTION("Sound driver for AT73C213 with Atmel SSC");
|
|
MODULE_LICENSE("GPL");
|