| /* |
| * omap-mcbsp.c -- OMAP ALSA SoC DAI driver using McBSP port |
| * |
| * Copyright (C) 2008 Nokia Corporation |
| * |
| * Contact: Jarkko Nikula <jarkko.nikula@bitmer.com> |
| * Peter Ujfalusi <peter.ujfalusi@ti.com> |
| * |
| * 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. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA |
| * 02110-1301 USA |
| * |
| */ |
| |
| #include <linux/init.h> |
| #include <linux/module.h> |
| #include <linux/device.h> |
| #include <linux/pm_runtime.h> |
| #include <linux/of.h> |
| #include <linux/of_device.h> |
| #include <sound/core.h> |
| #include <sound/pcm.h> |
| #include <sound/pcm_params.h> |
| #include <sound/initval.h> |
| #include <sound/soc.h> |
| #include <sound/dmaengine_pcm.h> |
| |
| #include <linux/platform_data/asoc-ti-mcbsp.h> |
| #include "mcbsp.h" |
| #include "omap-mcbsp.h" |
| |
| #define OMAP_MCBSP_RATES (SNDRV_PCM_RATE_8000_96000) |
| |
| #define OMAP_MCBSP_SOC_SINGLE_S16_EXT(xname, xmin, xmax, \ |
| xhandler_get, xhandler_put) \ |
| { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ |
| .info = omap_mcbsp_st_info_volsw, \ |
| .get = xhandler_get, .put = xhandler_put, \ |
| .private_value = (unsigned long) &(struct soc_mixer_control) \ |
| {.min = xmin, .max = xmax} } |
| |
| enum { |
| OMAP_MCBSP_WORD_8 = 0, |
| OMAP_MCBSP_WORD_12, |
| OMAP_MCBSP_WORD_16, |
| OMAP_MCBSP_WORD_20, |
| OMAP_MCBSP_WORD_24, |
| OMAP_MCBSP_WORD_32, |
| }; |
| |
| /* |
| * Stream DMA parameters. DMA request line and port address are set runtime |
| * since they are different between OMAP1 and later OMAPs |
| */ |
| static void omap_mcbsp_set_threshold(struct snd_pcm_substream *substream, |
| unsigned int packet_size) |
| { |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| struct omap_mcbsp *mcbsp = snd_soc_dai_get_drvdata(cpu_dai); |
| int words; |
| |
| /* |
| * Configure McBSP threshold based on either: |
| * packet_size, when the sDMA is in packet mode, or based on the |
| * period size in THRESHOLD mode, otherwise use McBSP threshold = 1 |
| * for mono streams. |
| */ |
| if (packet_size) |
| words = packet_size; |
| else |
| words = 1; |
| |
| /* Configure McBSP internal buffer usage */ |
| if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| omap_mcbsp_set_tx_threshold(mcbsp, words); |
| else |
| omap_mcbsp_set_rx_threshold(mcbsp, words); |
| } |
| |
| static int omap_mcbsp_hwrule_min_buffersize(struct snd_pcm_hw_params *params, |
| struct snd_pcm_hw_rule *rule) |
| { |
| struct snd_interval *buffer_size = hw_param_interval(params, |
| SNDRV_PCM_HW_PARAM_BUFFER_SIZE); |
| struct snd_interval *channels = hw_param_interval(params, |
| SNDRV_PCM_HW_PARAM_CHANNELS); |
| struct omap_mcbsp *mcbsp = rule->private; |
| struct snd_interval frames; |
| int size; |
| |
| snd_interval_any(&frames); |
| size = mcbsp->pdata->buffer_size; |
| |
| frames.min = size / channels->min; |
| frames.integer = 1; |
| return snd_interval_refine(buffer_size, &frames); |
| } |
| |
| static int omap_mcbsp_dai_startup(struct snd_pcm_substream *substream, |
| struct snd_soc_dai *cpu_dai) |
| { |
| struct omap_mcbsp *mcbsp = snd_soc_dai_get_drvdata(cpu_dai); |
| int err = 0; |
| |
| if (!cpu_dai->active) |
| err = omap_mcbsp_request(mcbsp); |
| |
| /* |
| * OMAP3 McBSP FIFO is word structured. |
| * McBSP2 has 1024 + 256 = 1280 word long buffer, |
| * McBSP1,3,4,5 has 128 word long buffer |
| * This means that the size of the FIFO depends on the sample format. |
| * For example on McBSP3: |
| * 16bit samples: size is 128 * 2 = 256 bytes |
| * 32bit samples: size is 128 * 4 = 512 bytes |
| * It is simpler to place constraint for buffer and period based on |
| * channels. |
| * McBSP3 as example again (16 or 32 bit samples): |
| * 1 channel (mono): size is 128 frames (128 words) |
| * 2 channels (stereo): size is 128 / 2 = 64 frames (2 * 64 words) |
| * 4 channels: size is 128 / 4 = 32 frames (4 * 32 words) |
| */ |
| if (mcbsp->pdata->buffer_size) { |
| /* |
| * Rule for the buffer size. We should not allow |
| * smaller buffer than the FIFO size to avoid underruns. |
| * This applies only for the playback stream. |
| */ |
| if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| snd_pcm_hw_rule_add(substream->runtime, 0, |
| SNDRV_PCM_HW_PARAM_BUFFER_SIZE, |
| omap_mcbsp_hwrule_min_buffersize, |
| mcbsp, |
| SNDRV_PCM_HW_PARAM_CHANNELS, -1); |
| |
| /* Make sure, that the period size is always even */ |
| snd_pcm_hw_constraint_step(substream->runtime, 0, |
| SNDRV_PCM_HW_PARAM_PERIOD_SIZE, 2); |
| } |
| |
| snd_soc_dai_set_dma_data(cpu_dai, substream, |
| &mcbsp->dma_data[substream->stream]); |
| |
| return err; |
| } |
| |
| static void omap_mcbsp_dai_shutdown(struct snd_pcm_substream *substream, |
| struct snd_soc_dai *cpu_dai) |
| { |
| struct omap_mcbsp *mcbsp = snd_soc_dai_get_drvdata(cpu_dai); |
| |
| if (!cpu_dai->active) { |
| omap_mcbsp_free(mcbsp); |
| mcbsp->configured = 0; |
| } |
| } |
| |
| static int omap_mcbsp_dai_trigger(struct snd_pcm_substream *substream, int cmd, |
| struct snd_soc_dai *cpu_dai) |
| { |
| struct omap_mcbsp *mcbsp = snd_soc_dai_get_drvdata(cpu_dai); |
| int err = 0, play = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK); |
| |
| switch (cmd) { |
| case SNDRV_PCM_TRIGGER_START: |
| case SNDRV_PCM_TRIGGER_RESUME: |
| case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
| mcbsp->active++; |
| omap_mcbsp_start(mcbsp, play, !play); |
| break; |
| |
| case SNDRV_PCM_TRIGGER_STOP: |
| case SNDRV_PCM_TRIGGER_SUSPEND: |
| case SNDRV_PCM_TRIGGER_PAUSE_PUSH: |
| omap_mcbsp_stop(mcbsp, play, !play); |
| mcbsp->active--; |
| break; |
| default: |
| err = -EINVAL; |
| } |
| |
| return err; |
| } |
| |
| static snd_pcm_sframes_t omap_mcbsp_dai_delay( |
| struct snd_pcm_substream *substream, |
| struct snd_soc_dai *dai) |
| { |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| struct omap_mcbsp *mcbsp = snd_soc_dai_get_drvdata(cpu_dai); |
| u16 fifo_use; |
| snd_pcm_sframes_t delay; |
| |
| if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| fifo_use = omap_mcbsp_get_tx_delay(mcbsp); |
| else |
| fifo_use = omap_mcbsp_get_rx_delay(mcbsp); |
| |
| /* |
| * Divide the used locations with the channel count to get the |
| * FIFO usage in samples (don't care about partial samples in the |
| * buffer). |
| */ |
| delay = fifo_use / substream->runtime->channels; |
| |
| return delay; |
| } |
| |
| static int omap_mcbsp_dai_hw_params(struct snd_pcm_substream *substream, |
| struct snd_pcm_hw_params *params, |
| struct snd_soc_dai *cpu_dai) |
| { |
| struct omap_mcbsp *mcbsp = snd_soc_dai_get_drvdata(cpu_dai); |
| struct omap_mcbsp_reg_cfg *regs = &mcbsp->cfg_regs; |
| struct snd_dmaengine_dai_dma_data *dma_data; |
| int wlen, channels, wpf; |
| int pkt_size = 0; |
| unsigned int format, div, framesize, master; |
| |
| dma_data = snd_soc_dai_get_dma_data(cpu_dai, substream); |
| channels = params_channels(params); |
| |
| switch (params_format(params)) { |
| case SNDRV_PCM_FORMAT_S16_LE: |
| wlen = 16; |
| break; |
| case SNDRV_PCM_FORMAT_S32_LE: |
| wlen = 32; |
| break; |
| default: |
| return -EINVAL; |
| } |
| if (mcbsp->pdata->buffer_size) { |
| if (mcbsp->dma_op_mode == MCBSP_DMA_MODE_THRESHOLD) { |
| int period_words, max_thrsh; |
| int divider = 0; |
| |
| period_words = params_period_bytes(params) / (wlen / 8); |
| if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| max_thrsh = mcbsp->max_tx_thres; |
| else |
| max_thrsh = mcbsp->max_rx_thres; |
| /* |
| * Use sDMA packet mode if McBSP is in threshold mode: |
| * If period words less than the FIFO size the packet |
| * size is set to the number of period words, otherwise |
| * Look for the biggest threshold value which divides |
| * the period size evenly. |
| */ |
| divider = period_words / max_thrsh; |
| if (period_words % max_thrsh) |
| divider++; |
| while (period_words % divider && |
| divider < period_words) |
| divider++; |
| if (divider == period_words) |
| return -EINVAL; |
| |
| pkt_size = period_words / divider; |
| } else if (channels > 1) { |
| /* Use packet mode for non mono streams */ |
| pkt_size = channels; |
| } |
| omap_mcbsp_set_threshold(substream, pkt_size); |
| } |
| |
| dma_data->maxburst = pkt_size; |
| |
| if (mcbsp->configured) { |
| /* McBSP already configured by another stream */ |
| return 0; |
| } |
| |
| regs->rcr2 &= ~(RPHASE | RFRLEN2(0x7f) | RWDLEN2(7)); |
| regs->xcr2 &= ~(RPHASE | XFRLEN2(0x7f) | XWDLEN2(7)); |
| regs->rcr1 &= ~(RFRLEN1(0x7f) | RWDLEN1(7)); |
| regs->xcr1 &= ~(XFRLEN1(0x7f) | XWDLEN1(7)); |
| format = mcbsp->fmt & SND_SOC_DAIFMT_FORMAT_MASK; |
| wpf = channels; |
| if (channels == 2 && (format == SND_SOC_DAIFMT_I2S || |
| format == SND_SOC_DAIFMT_LEFT_J)) { |
| /* Use dual-phase frames */ |
| regs->rcr2 |= RPHASE; |
| regs->xcr2 |= XPHASE; |
| /* Set 1 word per (McBSP) frame for phase1 and phase2 */ |
| wpf--; |
| regs->rcr2 |= RFRLEN2(wpf - 1); |
| regs->xcr2 |= XFRLEN2(wpf - 1); |
| } |
| |
| regs->rcr1 |= RFRLEN1(wpf - 1); |
| regs->xcr1 |= XFRLEN1(wpf - 1); |
| |
| switch (params_format(params)) { |
| case SNDRV_PCM_FORMAT_S16_LE: |
| /* Set word lengths */ |
| regs->rcr2 |= RWDLEN2(OMAP_MCBSP_WORD_16); |
| regs->rcr1 |= RWDLEN1(OMAP_MCBSP_WORD_16); |
| regs->xcr2 |= XWDLEN2(OMAP_MCBSP_WORD_16); |
| regs->xcr1 |= XWDLEN1(OMAP_MCBSP_WORD_16); |
| break; |
| case SNDRV_PCM_FORMAT_S32_LE: |
| /* Set word lengths */ |
| regs->rcr2 |= RWDLEN2(OMAP_MCBSP_WORD_32); |
| regs->rcr1 |= RWDLEN1(OMAP_MCBSP_WORD_32); |
| regs->xcr2 |= XWDLEN2(OMAP_MCBSP_WORD_32); |
| regs->xcr1 |= XWDLEN1(OMAP_MCBSP_WORD_32); |
| break; |
| default: |
| /* Unsupported PCM format */ |
| return -EINVAL; |
| } |
| |
| /* In McBSP master modes, FRAME (i.e. sample rate) is generated |
| * by _counting_ BCLKs. Calculate frame size in BCLKs */ |
| master = mcbsp->fmt & SND_SOC_DAIFMT_MASTER_MASK; |
| if (master == SND_SOC_DAIFMT_CBS_CFS) { |
| div = mcbsp->clk_div ? mcbsp->clk_div : 1; |
| framesize = (mcbsp->in_freq / div) / params_rate(params); |
| |
| if (framesize < wlen * channels) { |
| printk(KERN_ERR "%s: not enough bandwidth for desired rate and " |
| "channels\n", __func__); |
| return -EINVAL; |
| } |
| } else |
| framesize = wlen * channels; |
| |
| /* Set FS period and length in terms of bit clock periods */ |
| regs->srgr2 &= ~FPER(0xfff); |
| regs->srgr1 &= ~FWID(0xff); |
| switch (format) { |
| case SND_SOC_DAIFMT_I2S: |
| case SND_SOC_DAIFMT_LEFT_J: |
| regs->srgr2 |= FPER(framesize - 1); |
| regs->srgr1 |= FWID((framesize >> 1) - 1); |
| break; |
| case SND_SOC_DAIFMT_DSP_A: |
| case SND_SOC_DAIFMT_DSP_B: |
| regs->srgr2 |= FPER(framesize - 1); |
| regs->srgr1 |= FWID(0); |
| break; |
| } |
| |
| omap_mcbsp_config(mcbsp, &mcbsp->cfg_regs); |
| mcbsp->wlen = wlen; |
| mcbsp->configured = 1; |
| |
| return 0; |
| } |
| |
| /* |
| * This must be called before _set_clkdiv and _set_sysclk since McBSP register |
| * cache is initialized here |
| */ |
| static int omap_mcbsp_dai_set_dai_fmt(struct snd_soc_dai *cpu_dai, |
| unsigned int fmt) |
| { |
| struct omap_mcbsp *mcbsp = snd_soc_dai_get_drvdata(cpu_dai); |
| struct omap_mcbsp_reg_cfg *regs = &mcbsp->cfg_regs; |
| bool inv_fs = false; |
| |
| if (mcbsp->configured) |
| return 0; |
| |
| mcbsp->fmt = fmt; |
| memset(regs, 0, sizeof(*regs)); |
| /* Generic McBSP register settings */ |
| regs->spcr2 |= XINTM(3) | FREE; |
| regs->spcr1 |= RINTM(3); |
| /* RFIG and XFIG are not defined in 2430 and on OMAP3+ */ |
| if (!mcbsp->pdata->has_ccr) { |
| regs->rcr2 |= RFIG; |
| regs->xcr2 |= XFIG; |
| } |
| |
| /* Configure XCCR/RCCR only for revisions which have ccr registers */ |
| if (mcbsp->pdata->has_ccr) { |
| regs->xccr = DXENDLY(1) | XDMAEN | XDISABLE; |
| regs->rccr = RFULL_CYCLE | RDMAEN | RDISABLE; |
| } |
| |
| switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { |
| case SND_SOC_DAIFMT_I2S: |
| /* 1-bit data delay */ |
| regs->rcr2 |= RDATDLY(1); |
| regs->xcr2 |= XDATDLY(1); |
| break; |
| case SND_SOC_DAIFMT_LEFT_J: |
| /* 0-bit data delay */ |
| regs->rcr2 |= RDATDLY(0); |
| regs->xcr2 |= XDATDLY(0); |
| regs->spcr1 |= RJUST(2); |
| /* Invert FS polarity configuration */ |
| inv_fs = true; |
| break; |
| case SND_SOC_DAIFMT_DSP_A: |
| /* 1-bit data delay */ |
| regs->rcr2 |= RDATDLY(1); |
| regs->xcr2 |= XDATDLY(1); |
| /* Invert FS polarity configuration */ |
| inv_fs = true; |
| break; |
| case SND_SOC_DAIFMT_DSP_B: |
| /* 0-bit data delay */ |
| regs->rcr2 |= RDATDLY(0); |
| regs->xcr2 |= XDATDLY(0); |
| /* Invert FS polarity configuration */ |
| inv_fs = true; |
| break; |
| default: |
| /* Unsupported data format */ |
| return -EINVAL; |
| } |
| |
| switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { |
| case SND_SOC_DAIFMT_CBS_CFS: |
| /* McBSP master. Set FS and bit clocks as outputs */ |
| regs->pcr0 |= FSXM | FSRM | |
| CLKXM | CLKRM; |
| /* Sample rate generator drives the FS */ |
| regs->srgr2 |= FSGM; |
| break; |
| case SND_SOC_DAIFMT_CBM_CFM: |
| /* McBSP slave */ |
| break; |
| default: |
| /* Unsupported master/slave configuration */ |
| return -EINVAL; |
| } |
| |
| /* Set bit clock (CLKX/CLKR) and FS polarities */ |
| switch (fmt & SND_SOC_DAIFMT_INV_MASK) { |
| case SND_SOC_DAIFMT_NB_NF: |
| /* |
| * Normal BCLK + FS. |
| * FS active low. TX data driven on falling edge of bit clock |
| * and RX data sampled on rising edge of bit clock. |
| */ |
| regs->pcr0 |= FSXP | FSRP | |
| CLKXP | CLKRP; |
| break; |
| case SND_SOC_DAIFMT_NB_IF: |
| regs->pcr0 |= CLKXP | CLKRP; |
| break; |
| case SND_SOC_DAIFMT_IB_NF: |
| regs->pcr0 |= FSXP | FSRP; |
| break; |
| case SND_SOC_DAIFMT_IB_IF: |
| break; |
| default: |
| return -EINVAL; |
| } |
| if (inv_fs == true) |
| regs->pcr0 ^= FSXP | FSRP; |
| |
| return 0; |
| } |
| |
| static int omap_mcbsp_dai_set_clkdiv(struct snd_soc_dai *cpu_dai, |
| int div_id, int div) |
| { |
| struct omap_mcbsp *mcbsp = snd_soc_dai_get_drvdata(cpu_dai); |
| struct omap_mcbsp_reg_cfg *regs = &mcbsp->cfg_regs; |
| |
| if (div_id != OMAP_MCBSP_CLKGDV) |
| return -ENODEV; |
| |
| mcbsp->clk_div = div; |
| regs->srgr1 &= ~CLKGDV(0xff); |
| regs->srgr1 |= CLKGDV(div - 1); |
| |
| return 0; |
| } |
| |
| static int omap_mcbsp_dai_set_dai_sysclk(struct snd_soc_dai *cpu_dai, |
| int clk_id, unsigned int freq, |
| int dir) |
| { |
| struct omap_mcbsp *mcbsp = snd_soc_dai_get_drvdata(cpu_dai); |
| struct omap_mcbsp_reg_cfg *regs = &mcbsp->cfg_regs; |
| int err = 0; |
| |
| if (mcbsp->active) { |
| if (freq == mcbsp->in_freq) |
| return 0; |
| else |
| return -EBUSY; |
| } |
| |
| mcbsp->in_freq = freq; |
| regs->srgr2 &= ~CLKSM; |
| regs->pcr0 &= ~SCLKME; |
| |
| switch (clk_id) { |
| case OMAP_MCBSP_SYSCLK_CLK: |
| regs->srgr2 |= CLKSM; |
| break; |
| case OMAP_MCBSP_SYSCLK_CLKS_FCLK: |
| if (mcbsp_omap1()) { |
| err = -EINVAL; |
| break; |
| } |
| err = omap2_mcbsp_set_clks_src(mcbsp, |
| MCBSP_CLKS_PRCM_SRC); |
| break; |
| case OMAP_MCBSP_SYSCLK_CLKS_EXT: |
| if (mcbsp_omap1()) { |
| err = 0; |
| break; |
| } |
| err = omap2_mcbsp_set_clks_src(mcbsp, |
| MCBSP_CLKS_PAD_SRC); |
| break; |
| |
| case OMAP_MCBSP_SYSCLK_CLKX_EXT: |
| regs->srgr2 |= CLKSM; |
| case OMAP_MCBSP_SYSCLK_CLKR_EXT: |
| regs->pcr0 |= SCLKME; |
| break; |
| default: |
| err = -ENODEV; |
| } |
| |
| return err; |
| } |
| |
| static const struct snd_soc_dai_ops mcbsp_dai_ops = { |
| .startup = omap_mcbsp_dai_startup, |
| .shutdown = omap_mcbsp_dai_shutdown, |
| .trigger = omap_mcbsp_dai_trigger, |
| .delay = omap_mcbsp_dai_delay, |
| .hw_params = omap_mcbsp_dai_hw_params, |
| .set_fmt = omap_mcbsp_dai_set_dai_fmt, |
| .set_clkdiv = omap_mcbsp_dai_set_clkdiv, |
| .set_sysclk = omap_mcbsp_dai_set_dai_sysclk, |
| }; |
| |
| static int omap_mcbsp_probe(struct snd_soc_dai *dai) |
| { |
| struct omap_mcbsp *mcbsp = snd_soc_dai_get_drvdata(dai); |
| |
| pm_runtime_enable(mcbsp->dev); |
| |
| return 0; |
| } |
| |
| static int omap_mcbsp_remove(struct snd_soc_dai *dai) |
| { |
| struct omap_mcbsp *mcbsp = snd_soc_dai_get_drvdata(dai); |
| |
| pm_runtime_disable(mcbsp->dev); |
| |
| return 0; |
| } |
| |
| static struct snd_soc_dai_driver omap_mcbsp_dai = { |
| .probe = omap_mcbsp_probe, |
| .remove = omap_mcbsp_remove, |
| .playback = { |
| .channels_min = 1, |
| .channels_max = 16, |
| .rates = OMAP_MCBSP_RATES, |
| .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE, |
| }, |
| .capture = { |
| .channels_min = 1, |
| .channels_max = 16, |
| .rates = OMAP_MCBSP_RATES, |
| .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE, |
| }, |
| .ops = &mcbsp_dai_ops, |
| }; |
| |
| static const struct snd_soc_component_driver omap_mcbsp_component = { |
| .name = "omap-mcbsp", |
| }; |
| |
| static int omap_mcbsp_st_info_volsw(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_info *uinfo) |
| { |
| struct soc_mixer_control *mc = |
| (struct soc_mixer_control *)kcontrol->private_value; |
| int max = mc->max; |
| int min = mc->min; |
| |
| uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
| uinfo->count = 1; |
| uinfo->value.integer.min = min; |
| uinfo->value.integer.max = max; |
| return 0; |
| } |
| |
| #define OMAP_MCBSP_ST_CHANNEL_VOLUME(channel) \ |
| static int \ |
| omap_mcbsp_set_st_ch##channel##_volume(struct snd_kcontrol *kc, \ |
| struct snd_ctl_elem_value *uc) \ |
| { \ |
| struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kc); \ |
| struct omap_mcbsp *mcbsp = snd_soc_dai_get_drvdata(cpu_dai); \ |
| struct soc_mixer_control *mc = \ |
| (struct soc_mixer_control *)kc->private_value; \ |
| int max = mc->max; \ |
| int min = mc->min; \ |
| int val = uc->value.integer.value[0]; \ |
| \ |
| if (val < min || val > max) \ |
| return -EINVAL; \ |
| \ |
| /* OMAP McBSP implementation uses index values 0..4 */ \ |
| return omap_st_set_chgain(mcbsp, channel, val); \ |
| } \ |
| \ |
| static int \ |
| omap_mcbsp_get_st_ch##channel##_volume(struct snd_kcontrol *kc, \ |
| struct snd_ctl_elem_value *uc) \ |
| { \ |
| struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kc); \ |
| struct omap_mcbsp *mcbsp = snd_soc_dai_get_drvdata(cpu_dai); \ |
| s16 chgain; \ |
| \ |
| if (omap_st_get_chgain(mcbsp, channel, &chgain)) \ |
| return -EAGAIN; \ |
| \ |
| uc->value.integer.value[0] = chgain; \ |
| return 0; \ |
| } |
| |
| OMAP_MCBSP_ST_CHANNEL_VOLUME(0) |
| OMAP_MCBSP_ST_CHANNEL_VOLUME(1) |
| |
| static int omap_mcbsp_st_put_mode(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol); |
| struct omap_mcbsp *mcbsp = snd_soc_dai_get_drvdata(cpu_dai); |
| u8 value = ucontrol->value.integer.value[0]; |
| |
| if (value == omap_st_is_enabled(mcbsp)) |
| return 0; |
| |
| if (value) |
| omap_st_enable(mcbsp); |
| else |
| omap_st_disable(mcbsp); |
| |
| return 1; |
| } |
| |
| static int omap_mcbsp_st_get_mode(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol); |
| struct omap_mcbsp *mcbsp = snd_soc_dai_get_drvdata(cpu_dai); |
| |
| ucontrol->value.integer.value[0] = omap_st_is_enabled(mcbsp); |
| return 0; |
| } |
| |
| #define OMAP_MCBSP_ST_CONTROLS(port) \ |
| static const struct snd_kcontrol_new omap_mcbsp##port##_st_controls[] = { \ |
| SOC_SINGLE_EXT("McBSP" #port " Sidetone Switch", 1, 0, 1, 0, \ |
| omap_mcbsp_st_get_mode, omap_mcbsp_st_put_mode), \ |
| OMAP_MCBSP_SOC_SINGLE_S16_EXT("McBSP" #port " Sidetone Channel 0 Volume", \ |
| -32768, 32767, \ |
| omap_mcbsp_get_st_ch0_volume, \ |
| omap_mcbsp_set_st_ch0_volume), \ |
| OMAP_MCBSP_SOC_SINGLE_S16_EXT("McBSP" #port " Sidetone Channel 1 Volume", \ |
| -32768, 32767, \ |
| omap_mcbsp_get_st_ch1_volume, \ |
| omap_mcbsp_set_st_ch1_volume), \ |
| } |
| |
| OMAP_MCBSP_ST_CONTROLS(2); |
| OMAP_MCBSP_ST_CONTROLS(3); |
| |
| int omap_mcbsp_st_add_controls(struct snd_soc_pcm_runtime *rtd) |
| { |
| struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| struct omap_mcbsp *mcbsp = snd_soc_dai_get_drvdata(cpu_dai); |
| |
| if (!mcbsp->st_data) { |
| dev_warn(mcbsp->dev, "No sidetone data for port\n"); |
| return 0; |
| } |
| |
| switch (mcbsp->id) { |
| case 2: /* McBSP 2 */ |
| return snd_soc_add_dai_controls(cpu_dai, |
| omap_mcbsp2_st_controls, |
| ARRAY_SIZE(omap_mcbsp2_st_controls)); |
| case 3: /* McBSP 3 */ |
| return snd_soc_add_dai_controls(cpu_dai, |
| omap_mcbsp3_st_controls, |
| ARRAY_SIZE(omap_mcbsp3_st_controls)); |
| default: |
| break; |
| } |
| |
| return -EINVAL; |
| } |
| EXPORT_SYMBOL_GPL(omap_mcbsp_st_add_controls); |
| |
| static struct omap_mcbsp_platform_data omap2420_pdata = { |
| .reg_step = 4, |
| .reg_size = 2, |
| }; |
| |
| static struct omap_mcbsp_platform_data omap2430_pdata = { |
| .reg_step = 4, |
| .reg_size = 4, |
| .has_ccr = true, |
| }; |
| |
| static struct omap_mcbsp_platform_data omap3_pdata = { |
| .reg_step = 4, |
| .reg_size = 4, |
| .has_ccr = true, |
| .has_wakeup = true, |
| }; |
| |
| static struct omap_mcbsp_platform_data omap4_pdata = { |
| .reg_step = 4, |
| .reg_size = 4, |
| .has_ccr = true, |
| .has_wakeup = true, |
| }; |
| |
| static const struct of_device_id omap_mcbsp_of_match[] = { |
| { |
| .compatible = "ti,omap2420-mcbsp", |
| .data = &omap2420_pdata, |
| }, |
| { |
| .compatible = "ti,omap2430-mcbsp", |
| .data = &omap2430_pdata, |
| }, |
| { |
| .compatible = "ti,omap3-mcbsp", |
| .data = &omap3_pdata, |
| }, |
| { |
| .compatible = "ti,omap4-mcbsp", |
| .data = &omap4_pdata, |
| }, |
| { }, |
| }; |
| MODULE_DEVICE_TABLE(of, omap_mcbsp_of_match); |
| |
| static int asoc_mcbsp_probe(struct platform_device *pdev) |
| { |
| struct omap_mcbsp_platform_data *pdata = dev_get_platdata(&pdev->dev); |
| struct omap_mcbsp *mcbsp; |
| const struct of_device_id *match; |
| int ret; |
| |
| match = of_match_device(omap_mcbsp_of_match, &pdev->dev); |
| if (match) { |
| struct device_node *node = pdev->dev.of_node; |
| int buffer_size; |
| |
| pdata = devm_kzalloc(&pdev->dev, |
| sizeof(struct omap_mcbsp_platform_data), |
| GFP_KERNEL); |
| if (!pdata) |
| return -ENOMEM; |
| |
| memcpy(pdata, match->data, sizeof(*pdata)); |
| if (!of_property_read_u32(node, "ti,buffer-size", &buffer_size)) |
| pdata->buffer_size = buffer_size; |
| } else if (!pdata) { |
| dev_err(&pdev->dev, "missing platform data.\n"); |
| return -EINVAL; |
| } |
| mcbsp = devm_kzalloc(&pdev->dev, sizeof(struct omap_mcbsp), GFP_KERNEL); |
| if (!mcbsp) |
| return -ENOMEM; |
| |
| mcbsp->id = pdev->id; |
| mcbsp->pdata = pdata; |
| mcbsp->dev = &pdev->dev; |
| platform_set_drvdata(pdev, mcbsp); |
| |
| ret = omap_mcbsp_init(pdev); |
| if (!ret) |
| return snd_soc_register_component(&pdev->dev, &omap_mcbsp_component, |
| &omap_mcbsp_dai, 1); |
| |
| return ret; |
| } |
| |
| static int asoc_mcbsp_remove(struct platform_device *pdev) |
| { |
| struct omap_mcbsp *mcbsp = platform_get_drvdata(pdev); |
| |
| snd_soc_unregister_component(&pdev->dev); |
| |
| if (mcbsp->pdata->ops && mcbsp->pdata->ops->free) |
| mcbsp->pdata->ops->free(mcbsp->id); |
| |
| omap_mcbsp_sysfs_remove(mcbsp); |
| |
| clk_put(mcbsp->fclk); |
| |
| return 0; |
| } |
| |
| static struct platform_driver asoc_mcbsp_driver = { |
| .driver = { |
| .name = "omap-mcbsp", |
| .owner = THIS_MODULE, |
| .of_match_table = omap_mcbsp_of_match, |
| }, |
| |
| .probe = asoc_mcbsp_probe, |
| .remove = asoc_mcbsp_remove, |
| }; |
| |
| module_platform_driver(asoc_mcbsp_driver); |
| |
| MODULE_AUTHOR("Jarkko Nikula <jarkko.nikula@bitmer.com>"); |
| MODULE_DESCRIPTION("OMAP I2S SoC Interface"); |
| MODULE_LICENSE("GPL"); |
| MODULE_ALIAS("platform:omap-mcbsp"); |