diff options
Diffstat (limited to 'ANDROID_3.4.5/sound/spi/at73c213.c')
| -rw-r--r-- | ANDROID_3.4.5/sound/spi/at73c213.c | 1119 |
1 files changed, 0 insertions, 1119 deletions
diff --git a/ANDROID_3.4.5/sound/spi/at73c213.c b/ANDROID_3.4.5/sound/spi/at73c213.c deleted file mode 100644 index c6500d00..00000000 --- a/ANDROID_3.4.5/sound/spi/at73c213.c +++ /dev/null @@ -1,1119 +0,0 @@ -/* - * Driver for AT73C213 16-bit stereo DAC connected to Atmel SSC - * - * Copyright (C) 2006-2007 Atmel Norway - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published by - * the Free Software Foundation. - */ - -/*#define DEBUG*/ - -#include <linux/clk.h> -#include <linux/err.h> -#include <linux/delay.h> -#include <linux/device.h> -#include <linux/dma-mapping.h> -#include <linux/init.h> -#include <linux/interrupt.h> -#include <linux/module.h> -#include <linux/mutex.h> -#include <linux/platform_device.h> -#include <linux/io.h> - -#include <sound/initval.h> -#include <sound/control.h> -#include <sound/core.h> -#include <sound/pcm.h> - -#include <linux/atmel-ssc.h> - -#include <linux/spi/spi.h> -#include <linux/spi/at73c213.h> - -#include "at73c213.h" - -#define BITRATE_MIN 8000 /* Hardware limit? */ -#define BITRATE_TARGET CONFIG_SND_AT73C213_TARGET_BITRATE -#define BITRATE_MAX 50000 /* Hardware limit. */ - -/* Initial (hardware reset) AT73C213 register values. */ -static u8 snd_at73c213_original_image[18] = -{ - 0x00, /* 00 - CTRL */ - 0x05, /* 01 - LLIG */ - 0x05, /* 02 - RLIG */ - 0x08, /* 03 - LPMG */ - 0x08, /* 04 - RPMG */ - 0x00, /* 05 - LLOG */ - 0x00, /* 06 - RLOG */ - 0x22, /* 07 - OLC */ - 0x09, /* 08 - MC */ - 0x00, /* 09 - CSFC */ - 0x00, /* 0A - MISC */ - 0x00, /* 0B - */ - 0x00, /* 0C - PRECH */ - 0x05, /* 0D - AUXG */ - 0x00, /* 0E - */ - 0x00, /* 0F - */ - 0x00, /* 10 - RST */ - 0x00, /* 11 - PA_CTRL */ -}; - -struct snd_at73c213 { - struct snd_card *card; - struct snd_pcm *pcm; - struct snd_pcm_substream *substream; - struct at73c213_board_info *board; - int irq; - int period; - unsigned long bitrate; - struct ssc_device *ssc; - struct spi_device *spi; - u8 spi_wbuffer[2]; - u8 spi_rbuffer[2]; - /* Image of the SPI registers in AT73C213. */ - u8 reg_image[18]; - /* Protect SSC registers against concurrent access. */ - spinlock_t lock; - /* Protect mixer registers against concurrent access. */ - struct mutex mixer_lock; -}; - -#define get_chip(card) ((struct snd_at73c213 *)card->private_data) - -static int -snd_at73c213_write_reg(struct snd_at73c213 *chip, u8 reg, u8 val) -{ - struct spi_message msg; - struct spi_transfer msg_xfer = { - .len = 2, - .cs_change = 0, - }; - int retval; - - spi_message_init(&msg); - - chip->spi_wbuffer[0] = reg; - chip->spi_wbuffer[1] = val; - - msg_xfer.tx_buf = chip->spi_wbuffer; - msg_xfer.rx_buf = chip->spi_rbuffer; - spi_message_add_tail(&msg_xfer, &msg); - - retval = spi_sync(chip->spi, &msg); - - if (!retval) - chip->reg_image[reg] = val; - - return retval; -} - -static struct snd_pcm_hardware snd_at73c213_playback_hw = { - .info = SNDRV_PCM_INFO_INTERLEAVED | - SNDRV_PCM_INFO_BLOCK_TRANSFER, - .formats = SNDRV_PCM_FMTBIT_S16_BE, - .rates = SNDRV_PCM_RATE_CONTINUOUS, - .rate_min = 8000, /* Replaced by chip->bitrate later. */ - .rate_max = 50000, /* Replaced by chip->bitrate later. */ - .channels_min = 1, - .channels_max = 2, - .buffer_bytes_max = 64 * 1024 - 1, - .period_bytes_min = 512, - .period_bytes_max = 64 * 1024 - 1, - .periods_min = 4, - .periods_max = 1024, -}; - -/* - * Calculate and set bitrate and divisions. - */ -static int snd_at73c213_set_bitrate(struct snd_at73c213 *chip) -{ - unsigned long ssc_rate = clk_get_rate(chip->ssc->clk); - unsigned long dac_rate_new, ssc_div; - int status; - unsigned long ssc_div_max, ssc_div_min; - int max_tries; - - /* - * We connect two clocks here, picking divisors so the I2S clocks - * out data at the same rate the DAC clocks it in ... and as close - * as practical to the desired target rate. - * - * The DAC master clock (MCLK) is programmable, and is either 256 - * or (not here) 384 times the I2S output clock (BCLK). - */ - - /* SSC clock / (bitrate * stereo * 16-bit). */ - ssc_div = ssc_rate / (BITRATE_TARGET * 2 * 16); - ssc_div_min = ssc_rate / (BITRATE_MAX * 2 * 16); - ssc_div_max = ssc_rate / (BITRATE_MIN * 2 * 16); - max_tries = (ssc_div_max - ssc_div_min) / 2; - - if (max_tries < 1) - max_tries = 1; - - /* ssc_div must be even. */ - ssc_div = (ssc_div + 1) & ~1UL; - - if ((ssc_rate / (ssc_div * 2 * 16)) < BITRATE_MIN) { - ssc_div -= 2; - if ((ssc_rate / (ssc_div * 2 * 16)) > BITRATE_MAX) - return -ENXIO; - } - - /* Search for a possible bitrate. */ - do { - /* SSC clock / (ssc divider * 16-bit * stereo). */ - if ((ssc_rate / (ssc_div * 2 * 16)) < BITRATE_MIN) - return -ENXIO; - - /* 256 / (2 * 16) = 8 */ - dac_rate_new = 8 * (ssc_rate / ssc_div); - - status = clk_round_rate(chip->board->dac_clk, dac_rate_new); - if (status < 0) - return status; - - /* Ignore difference smaller than 256 Hz. */ - if ((status/256) == (dac_rate_new/256)) - goto set_rate; - - ssc_div += 2; - } while (--max_tries); - - /* Not able to find a valid bitrate. */ - return -ENXIO; - -set_rate: - status = clk_set_rate(chip->board->dac_clk, status); - if (status < 0) - return status; - - /* Set divider in SSC device. */ - ssc_writel(chip->ssc->regs, CMR, ssc_div/2); - - /* SSC clock / (ssc divider * 16-bit * stereo). */ - chip->bitrate = ssc_rate / (ssc_div * 16 * 2); - - dev_info(&chip->spi->dev, - "at73c213: supported bitrate is %lu (%lu divider)\n", - chip->bitrate, ssc_div); - - return 0; -} - -static int snd_at73c213_pcm_open(struct snd_pcm_substream *substream) -{ - struct snd_at73c213 *chip = snd_pcm_substream_chip(substream); - struct snd_pcm_runtime *runtime = substream->runtime; - int err; - - /* ensure buffer_size is a multiple of period_size */ - err = snd_pcm_hw_constraint_integer(runtime, - SNDRV_PCM_HW_PARAM_PERIODS); - if (err < 0) - return err; - snd_at73c213_playback_hw.rate_min = chip->bitrate; - snd_at73c213_playback_hw.rate_max = chip->bitrate; - runtime->hw = snd_at73c213_playback_hw; - chip->substream = substream; - - return 0; -} - -static int snd_at73c213_pcm_close(struct snd_pcm_substream *substream) -{ - struct snd_at73c213 *chip = snd_pcm_substream_chip(substream); - chip->substream = NULL; - return 0; -} - -static int snd_at73c213_pcm_hw_params(struct snd_pcm_substream *substream, - struct snd_pcm_hw_params *hw_params) -{ - struct snd_at73c213 *chip = snd_pcm_substream_chip(substream); - int channels = params_channels(hw_params); - int val; - - val = ssc_readl(chip->ssc->regs, TFMR); - val = SSC_BFINS(TFMR_DATNB, channels - 1, val); - ssc_writel(chip->ssc->regs, TFMR, val); - - return snd_pcm_lib_malloc_pages(substream, - params_buffer_bytes(hw_params)); -} - -static int snd_at73c213_pcm_hw_free(struct snd_pcm_substream *substream) -{ - return snd_pcm_lib_free_pages(substream); -} - -static int snd_at73c213_pcm_prepare(struct snd_pcm_substream *substream) -{ - struct snd_at73c213 *chip = snd_pcm_substream_chip(substream); - struct snd_pcm_runtime *runtime = substream->runtime; - int block_size; - - block_size = frames_to_bytes(runtime, runtime->period_size); - - chip->period = 0; - - ssc_writel(chip->ssc->regs, PDC_TPR, - (long)runtime->dma_addr); - ssc_writel(chip->ssc->regs, PDC_TCR, - runtime->period_size * runtime->channels); - ssc_writel(chip->ssc->regs, PDC_TNPR, - (long)runtime->dma_addr + block_size); - ssc_writel(chip->ssc->regs, PDC_TNCR, - runtime->period_size * runtime->channels); - - return 0; -} - -static int snd_at73c213_pcm_trigger(struct snd_pcm_substream *substream, - int cmd) -{ - struct snd_at73c213 *chip = snd_pcm_substream_chip(substream); - int retval = 0; - - spin_lock(&chip->lock); - - switch (cmd) { - case SNDRV_PCM_TRIGGER_START: - ssc_writel(chip->ssc->regs, IER, SSC_BIT(IER_ENDTX)); - ssc_writel(chip->ssc->regs, PDC_PTCR, SSC_BIT(PDC_PTCR_TXTEN)); - break; - case SNDRV_PCM_TRIGGER_STOP: - ssc_writel(chip->ssc->regs, PDC_PTCR, SSC_BIT(PDC_PTCR_TXTDIS)); - ssc_writel(chip->ssc->regs, IDR, SSC_BIT(IDR_ENDTX)); - break; - default: - dev_dbg(&chip->spi->dev, "spurious command %x\n", cmd); - retval = -EINVAL; - break; - } - - spin_unlock(&chip->lock); - - return retval; -} - -static snd_pcm_uframes_t -snd_at73c213_pcm_pointer(struct snd_pcm_substream *substream) -{ - struct snd_at73c213 *chip = snd_pcm_substream_chip(substream); - struct snd_pcm_runtime *runtime = substream->runtime; - snd_pcm_uframes_t pos; - unsigned long bytes; - - bytes = ssc_readl(chip->ssc->regs, PDC_TPR) - - (unsigned long)runtime->dma_addr; - - pos = bytes_to_frames(runtime, bytes); - if (pos >= runtime->buffer_size) - pos -= runtime->buffer_size; - - return pos; -} - -static struct snd_pcm_ops at73c213_playback_ops = { - .open = snd_at73c213_pcm_open, - .close = snd_at73c213_pcm_close, - .ioctl = snd_pcm_lib_ioctl, - .hw_params = snd_at73c213_pcm_hw_params, - .hw_free = snd_at73c213_pcm_hw_free, - .prepare = snd_at73c213_pcm_prepare, - .trigger = snd_at73c213_pcm_trigger, - .pointer = snd_at73c213_pcm_pointer, -}; - -static int __devinit snd_at73c213_pcm_new(struct snd_at73c213 *chip, int device) -{ - struct snd_pcm *pcm; - int retval; - - retval = snd_pcm_new(chip->card, chip->card->shortname, - device, 1, 0, &pcm); - if (retval < 0) - goto out; - - pcm->private_data = chip; - pcm->info_flags = SNDRV_PCM_INFO_BLOCK_TRANSFER; - strcpy(pcm->name, "at73c213"); - chip->pcm = pcm; - - snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &at73c213_playback_ops); - - retval = snd_pcm_lib_preallocate_pages_for_all(chip->pcm, - SNDRV_DMA_TYPE_DEV, &chip->ssc->pdev->dev, - 64 * 1024, 64 * 1024); -out: - return retval; -} - -static irqreturn_t snd_at73c213_interrupt(int irq, void *dev_id) -{ - struct snd_at73c213 *chip = dev_id; - struct snd_pcm_runtime *runtime = chip->substream->runtime; - u32 status; - int offset; - int block_size; - int next_period; - int retval = IRQ_NONE; - - spin_lock(&chip->lock); - - block_size = frames_to_bytes(runtime, runtime->period_size); - status = ssc_readl(chip->ssc->regs, IMR); - - if (status & SSC_BIT(IMR_ENDTX)) { - chip->period++; - if (chip->period == runtime->periods) - chip->period = 0; - next_period = chip->period + 1; - if (next_period == runtime->periods) - next_period = 0; - - offset = block_size * next_period; - - ssc_writel(chip->ssc->regs, PDC_TNPR, - (long)runtime->dma_addr + offset); - ssc_writel(chip->ssc->regs, PDC_TNCR, - runtime->period_size * runtime->channels); - retval = IRQ_HANDLED; - } - - ssc_readl(chip->ssc->regs, IMR); - spin_unlock(&chip->lock); - - if (status & SSC_BIT(IMR_ENDTX)) - snd_pcm_period_elapsed(chip->substream); - - return retval; -} - -/* - * Mixer functions. - */ -static int snd_at73c213_mono_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 mask = (kcontrol->private_value >> 16) & 0xff; - int invert = (kcontrol->private_value >> 24) & 0xff; - - mutex_lock(&chip->mixer_lock); - - ucontrol->value.integer.value[0] = - (chip->reg_image[reg] >> shift) & mask; - - if (invert) - ucontrol->value.integer.value[0] = - mask - ucontrol->value.integer.value[0]; - - mutex_unlock(&chip->mixer_lock); - - return 0; -} - -static int snd_at73c213_mono_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; - - val = (ucontrol->value.integer.value[0] & mask); - if (invert) - val = mask - val; - val <<= shift; - - mutex_lock(&chip->mixer_lock); - - val = (chip->reg_image[reg] & ~(mask << shift)) | val; - 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_stereo_info(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_info *uinfo) -{ - int mask = (kcontrol->private_value >> 24) & 0xff; - - if (mask == 1) - uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; - else - uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; - - uinfo->count = 2; - uinfo->value.integer.min = 0; - uinfo->value.integer.max = mask; - - return 0; -} - -static int snd_at73c213_stereo_get(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; - - mutex_lock(&chip->mixer_lock); - - ucontrol->value.integer.value[0] = - (chip->reg_image[left_reg] >> shift_left) & mask; - 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), -}; - -module_spi_driver(at73c213_driver); - -MODULE_AUTHOR("Hans-Christian Egtvedt <egtvedt@samfundet.no>"); -MODULE_DESCRIPTION("Sound driver for AT73C213 with Atmel SSC"); -MODULE_LICENSE("GPL"); |