1f9b95980Sapatard@mandriva.com /* 2f9b95980Sapatard@mandriva.com * kirkwood-i2s.c 3f9b95980Sapatard@mandriva.com * 4f9b95980Sapatard@mandriva.com * (c) 2010 Arnaud Patard <apatard@mandriva.com> 569737897SArnaud Patard (Rtp) * (c) 2010 Arnaud Patard <arnaud.patard@rtp-net.org> 6f9b95980Sapatard@mandriva.com * 7f9b95980Sapatard@mandriva.com * This program is free software; you can redistribute it and/or modify it 8f9b95980Sapatard@mandriva.com * under the terms of the GNU General Public License as published by the 9f9b95980Sapatard@mandriva.com * Free Software Foundation; either version 2 of the License, or (at your 10f9b95980Sapatard@mandriva.com * option) any later version. 11f9b95980Sapatard@mandriva.com */ 12f9b95980Sapatard@mandriva.com 13f9b95980Sapatard@mandriva.com #include <linux/init.h> 14f9b95980Sapatard@mandriva.com #include <linux/module.h> 15f9b95980Sapatard@mandriva.com #include <linux/platform_device.h> 16f9b95980Sapatard@mandriva.com #include <linux/io.h> 17f9b95980Sapatard@mandriva.com #include <linux/slab.h> 18f9b95980Sapatard@mandriva.com #include <linux/mbus.h> 19f9b95980Sapatard@mandriva.com #include <linux/delay.h> 20e919c716SAndrew Lunn #include <linux/clk.h> 21f9b95980Sapatard@mandriva.com #include <sound/pcm.h> 22f9b95980Sapatard@mandriva.com #include <sound/pcm_params.h> 23f9b95980Sapatard@mandriva.com #include <sound/soc.h> 24c02cecb9SArnd Bergmann #include <linux/platform_data/asoc-kirkwood.h> 25f9b95980Sapatard@mandriva.com #include "kirkwood.h" 26f9b95980Sapatard@mandriva.com 27f9b95980Sapatard@mandriva.com #define DRV_NAME "kirkwood-i2s" 28f9b95980Sapatard@mandriva.com 29f9b95980Sapatard@mandriva.com #define KIRKWOOD_I2S_RATES \ 30f9b95980Sapatard@mandriva.com (SNDRV_PCM_RATE_44100 | \ 31f9b95980Sapatard@mandriva.com SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000) 32f9b95980Sapatard@mandriva.com #define KIRKWOOD_I2S_FORMATS \ 33f9b95980Sapatard@mandriva.com (SNDRV_PCM_FMTBIT_S16_LE | \ 34f9b95980Sapatard@mandriva.com SNDRV_PCM_FMTBIT_S24_LE | \ 35f9b95980Sapatard@mandriva.com SNDRV_PCM_FMTBIT_S32_LE) 36f9b95980Sapatard@mandriva.com 37f9b95980Sapatard@mandriva.com static int kirkwood_i2s_set_fmt(struct snd_soc_dai *cpu_dai, 38f9b95980Sapatard@mandriva.com unsigned int fmt) 39f9b95980Sapatard@mandriva.com { 40f0fba2adSLiam Girdwood struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(cpu_dai); 41f9b95980Sapatard@mandriva.com unsigned long mask; 42f9b95980Sapatard@mandriva.com unsigned long value; 43f9b95980Sapatard@mandriva.com 44f9b95980Sapatard@mandriva.com switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 45f9b95980Sapatard@mandriva.com case SND_SOC_DAIFMT_RIGHT_J: 46f9b95980Sapatard@mandriva.com mask = KIRKWOOD_I2S_CTL_RJ; 47f9b95980Sapatard@mandriva.com break; 48f9b95980Sapatard@mandriva.com case SND_SOC_DAIFMT_LEFT_J: 49f9b95980Sapatard@mandriva.com mask = KIRKWOOD_I2S_CTL_LJ; 50f9b95980Sapatard@mandriva.com break; 51f9b95980Sapatard@mandriva.com case SND_SOC_DAIFMT_I2S: 52f9b95980Sapatard@mandriva.com mask = KIRKWOOD_I2S_CTL_I2S; 53f9b95980Sapatard@mandriva.com break; 54f9b95980Sapatard@mandriva.com default: 55f9b95980Sapatard@mandriva.com return -EINVAL; 56f9b95980Sapatard@mandriva.com } 57f9b95980Sapatard@mandriva.com 58f9b95980Sapatard@mandriva.com /* 59f9b95980Sapatard@mandriva.com * Set same format for playback and record 60f9b95980Sapatard@mandriva.com * This avoids some troubles. 61f9b95980Sapatard@mandriva.com */ 62f9b95980Sapatard@mandriva.com value = readl(priv->io+KIRKWOOD_I2S_PLAYCTL); 63f9b95980Sapatard@mandriva.com value &= ~KIRKWOOD_I2S_CTL_JUST_MASK; 64f9b95980Sapatard@mandriva.com value |= mask; 65f9b95980Sapatard@mandriva.com writel(value, priv->io+KIRKWOOD_I2S_PLAYCTL); 66f9b95980Sapatard@mandriva.com 67f9b95980Sapatard@mandriva.com value = readl(priv->io+KIRKWOOD_I2S_RECCTL); 68f9b95980Sapatard@mandriva.com value &= ~KIRKWOOD_I2S_CTL_JUST_MASK; 69f9b95980Sapatard@mandriva.com value |= mask; 70f9b95980Sapatard@mandriva.com writel(value, priv->io+KIRKWOOD_I2S_RECCTL); 71f9b95980Sapatard@mandriva.com 72f9b95980Sapatard@mandriva.com return 0; 73f9b95980Sapatard@mandriva.com } 74f9b95980Sapatard@mandriva.com 75f9b95980Sapatard@mandriva.com static inline void kirkwood_set_dco(void __iomem *io, unsigned long rate) 76f9b95980Sapatard@mandriva.com { 77f9b95980Sapatard@mandriva.com unsigned long value; 78f9b95980Sapatard@mandriva.com 79f9b95980Sapatard@mandriva.com value = KIRKWOOD_DCO_CTL_OFFSET_0; 80f9b95980Sapatard@mandriva.com switch (rate) { 81f9b95980Sapatard@mandriva.com default: 82f9b95980Sapatard@mandriva.com case 44100: 83f9b95980Sapatard@mandriva.com value |= KIRKWOOD_DCO_CTL_FREQ_11; 84f9b95980Sapatard@mandriva.com break; 85f9b95980Sapatard@mandriva.com case 48000: 86f9b95980Sapatard@mandriva.com value |= KIRKWOOD_DCO_CTL_FREQ_12; 87f9b95980Sapatard@mandriva.com break; 88f9b95980Sapatard@mandriva.com case 96000: 89f9b95980Sapatard@mandriva.com value |= KIRKWOOD_DCO_CTL_FREQ_24; 90f9b95980Sapatard@mandriva.com break; 91f9b95980Sapatard@mandriva.com } 92f9b95980Sapatard@mandriva.com writel(value, io + KIRKWOOD_DCO_CTL); 93f9b95980Sapatard@mandriva.com 94f9b95980Sapatard@mandriva.com /* wait for dco locked */ 95f9b95980Sapatard@mandriva.com do { 96f9b95980Sapatard@mandriva.com cpu_relax(); 97f9b95980Sapatard@mandriva.com value = readl(io + KIRKWOOD_DCO_SPCR_STATUS); 982424d458SRussell King value &= KIRKWOOD_DCO_SPCR_STATUS_DCO_LOCK; 99f9b95980Sapatard@mandriva.com } while (value == 0); 100f9b95980Sapatard@mandriva.com } 101f9b95980Sapatard@mandriva.com 102f0fba2adSLiam Girdwood static int kirkwood_i2s_startup(struct snd_pcm_substream *substream, 103f0fba2adSLiam Girdwood struct snd_soc_dai *dai) 104f0fba2adSLiam Girdwood { 105f0fba2adSLiam Girdwood struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai); 106f0fba2adSLiam Girdwood 107f0fba2adSLiam Girdwood snd_soc_dai_set_dma_data(dai, substream, priv); 108f0fba2adSLiam Girdwood return 0; 109f0fba2adSLiam Girdwood } 110f0fba2adSLiam Girdwood 111f9b95980Sapatard@mandriva.com static int kirkwood_i2s_hw_params(struct snd_pcm_substream *substream, 112f9b95980Sapatard@mandriva.com struct snd_pcm_hw_params *params, 113f9b95980Sapatard@mandriva.com struct snd_soc_dai *dai) 114f9b95980Sapatard@mandriva.com { 115f0fba2adSLiam Girdwood struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai); 116*d8d11ba5SRussell King uint32_t ctl_play, ctl_rec; 117*d8d11ba5SRussell King unsigned int i2s_reg; 118*d8d11ba5SRussell King unsigned long i2s_value; 119f9b95980Sapatard@mandriva.com 120f9b95980Sapatard@mandriva.com if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { 121f9b95980Sapatard@mandriva.com i2s_reg = KIRKWOOD_I2S_PLAYCTL; 122f9b95980Sapatard@mandriva.com } else { 123f9b95980Sapatard@mandriva.com i2s_reg = KIRKWOOD_I2S_RECCTL; 124f9b95980Sapatard@mandriva.com } 125f9b95980Sapatard@mandriva.com 126f9b95980Sapatard@mandriva.com /* set dco conf */ 127f9b95980Sapatard@mandriva.com kirkwood_set_dco(priv->io, params_rate(params)); 128f9b95980Sapatard@mandriva.com 129f9b95980Sapatard@mandriva.com i2s_value = readl(priv->io+i2s_reg); 130f9b95980Sapatard@mandriva.com i2s_value &= ~KIRKWOOD_I2S_CTL_SIZE_MASK; 131f9b95980Sapatard@mandriva.com 132f9b95980Sapatard@mandriva.com /* 133f9b95980Sapatard@mandriva.com * Size settings in play/rec i2s control regs and play/rec control 134f9b95980Sapatard@mandriva.com * regs must be the same. 135f9b95980Sapatard@mandriva.com */ 136f9b95980Sapatard@mandriva.com switch (params_format(params)) { 137f9b95980Sapatard@mandriva.com case SNDRV_PCM_FORMAT_S16_LE: 138f9b95980Sapatard@mandriva.com i2s_value |= KIRKWOOD_I2S_CTL_SIZE_16; 139*d8d11ba5SRussell King ctl_play = KIRKWOOD_PLAYCTL_SIZE_16_C | 140*d8d11ba5SRussell King KIRKWOOD_PLAYCTL_I2S_EN; 141*d8d11ba5SRussell King ctl_rec = KIRKWOOD_RECCTL_SIZE_16_C | 142*d8d11ba5SRussell King KIRKWOOD_RECCTL_I2S_EN; 143f9b95980Sapatard@mandriva.com break; 144f9b95980Sapatard@mandriva.com /* 145f9b95980Sapatard@mandriva.com * doesn't work... S20_3LE != kirkwood 20bit format ? 146f9b95980Sapatard@mandriva.com * 147f9b95980Sapatard@mandriva.com case SNDRV_PCM_FORMAT_S20_3LE: 148f9b95980Sapatard@mandriva.com i2s_value |= KIRKWOOD_I2S_CTL_SIZE_20; 149*d8d11ba5SRussell King ctl_play = KIRKWOOD_PLAYCTL_SIZE_20 | 150*d8d11ba5SRussell King KIRKWOOD_PLAYCTL_I2S_EN; 151*d8d11ba5SRussell King ctl_rec = KIRKWOOD_RECCTL_SIZE_20 | 152*d8d11ba5SRussell King KIRKWOOD_RECCTL_I2S_EN; 153f9b95980Sapatard@mandriva.com break; 154f9b95980Sapatard@mandriva.com */ 155f9b95980Sapatard@mandriva.com case SNDRV_PCM_FORMAT_S24_LE: 156f9b95980Sapatard@mandriva.com i2s_value |= KIRKWOOD_I2S_CTL_SIZE_24; 157*d8d11ba5SRussell King ctl_play = KIRKWOOD_PLAYCTL_SIZE_24 | 158*d8d11ba5SRussell King KIRKWOOD_PLAYCTL_I2S_EN; 159*d8d11ba5SRussell King ctl_rec = KIRKWOOD_RECCTL_SIZE_24 | 160*d8d11ba5SRussell King KIRKWOOD_RECCTL_I2S_EN; 161f9b95980Sapatard@mandriva.com break; 162f9b95980Sapatard@mandriva.com case SNDRV_PCM_FORMAT_S32_LE: 163f9b95980Sapatard@mandriva.com i2s_value |= KIRKWOOD_I2S_CTL_SIZE_32; 164*d8d11ba5SRussell King ctl_play = KIRKWOOD_PLAYCTL_SIZE_32 | 165*d8d11ba5SRussell King KIRKWOOD_PLAYCTL_I2S_EN; 166*d8d11ba5SRussell King ctl_rec = KIRKWOOD_RECCTL_SIZE_32 | 167*d8d11ba5SRussell King KIRKWOOD_RECCTL_I2S_EN; 168f9b95980Sapatard@mandriva.com break; 169f9b95980Sapatard@mandriva.com default: 170f9b95980Sapatard@mandriva.com return -EINVAL; 171f9b95980Sapatard@mandriva.com } 172dfe4c936Sarnaud.patard@rtp-net.org 173dfe4c936Sarnaud.patard@rtp-net.org if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { 174dfe4c936Sarnaud.patard@rtp-net.org if (params_channels(params) == 1) 175*d8d11ba5SRussell King ctl_play |= KIRKWOOD_PLAYCTL_MONO_BOTH; 176dfe4c936Sarnaud.patard@rtp-net.org else 177*d8d11ba5SRussell King ctl_play |= KIRKWOOD_PLAYCTL_MONO_OFF; 178*d8d11ba5SRussell King 179*d8d11ba5SRussell King priv->ctl_play &= ~(KIRKWOOD_PLAYCTL_MONO_MASK | 180*d8d11ba5SRussell King KIRKWOOD_PLAYCTL_I2S_EN | 181*d8d11ba5SRussell King KIRKWOOD_PLAYCTL_SPDIF_EN | 182*d8d11ba5SRussell King KIRKWOOD_PLAYCTL_SIZE_MASK); 183*d8d11ba5SRussell King priv->ctl_play |= ctl_play; 184*d8d11ba5SRussell King } else { 185*d8d11ba5SRussell King priv->ctl_rec &= ~KIRKWOOD_RECCTL_SIZE_MASK; 186*d8d11ba5SRussell King priv->ctl_rec |= ctl_rec; 187dfe4c936Sarnaud.patard@rtp-net.org } 188dfe4c936Sarnaud.patard@rtp-net.org 189f9b95980Sapatard@mandriva.com writel(i2s_value, priv->io+i2s_reg); 190f9b95980Sapatard@mandriva.com 191f9b95980Sapatard@mandriva.com return 0; 192f9b95980Sapatard@mandriva.com } 193f9b95980Sapatard@mandriva.com 194f9b95980Sapatard@mandriva.com static int kirkwood_i2s_play_trigger(struct snd_pcm_substream *substream, 195f9b95980Sapatard@mandriva.com int cmd, struct snd_soc_dai *dai) 196f9b95980Sapatard@mandriva.com { 197f0fba2adSLiam Girdwood struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai); 198982b604bSRussell King uint32_t ctl, value; 199f9b95980Sapatard@mandriva.com 200982b604bSRussell King ctl = readl(priv->io + KIRKWOOD_PLAYCTL); 201982b604bSRussell King if (ctl & KIRKWOOD_PLAYCTL_PAUSE) { 202982b604bSRussell King unsigned timeout = 5000; 203f9b95980Sapatard@mandriva.com /* 204982b604bSRussell King * The Armada510 spec says that if we enter pause mode, the 205982b604bSRussell King * busy bit must be read back as clear _twice_. Make sure 206982b604bSRussell King * we respect that otherwise we get DMA underruns. 207f9b95980Sapatard@mandriva.com */ 208982b604bSRussell King do { 209982b604bSRussell King value = ctl; 210982b604bSRussell King ctl = readl(priv->io + KIRKWOOD_PLAYCTL); 211982b604bSRussell King if (!((ctl | value) & KIRKWOOD_PLAYCTL_PLAY_BUSY)) 212982b604bSRussell King break; 213982b604bSRussell King udelay(1); 214982b604bSRussell King } while (timeout--); 215982b604bSRussell King 216982b604bSRussell King if ((ctl | value) & KIRKWOOD_PLAYCTL_PLAY_BUSY) 217982b604bSRussell King dev_notice(dai->dev, "timed out waiting for busy to deassert: %08x\n", 218982b604bSRussell King ctl); 219982b604bSRussell King } 220f9b95980Sapatard@mandriva.com 221f9b95980Sapatard@mandriva.com switch (cmd) { 222f9b95980Sapatard@mandriva.com case SNDRV_PCM_TRIGGER_START: 223*d8d11ba5SRussell King /* configure */ 224*d8d11ba5SRussell King ctl = priv->ctl_play; 225*d8d11ba5SRussell King value = ctl & ~(KIRKWOOD_PLAYCTL_I2S_EN | 226*d8d11ba5SRussell King KIRKWOOD_PLAYCTL_SPDIF_EN); 227*d8d11ba5SRussell King writel(value, priv->io + KIRKWOOD_PLAYCTL); 228*d8d11ba5SRussell King 229*d8d11ba5SRussell King /* enable interrupts */ 230f9b95980Sapatard@mandriva.com value = readl(priv->io + KIRKWOOD_INT_MASK); 231f9b95980Sapatard@mandriva.com value |= KIRKWOOD_INT_CAUSE_PLAY_BYTES; 232f9b95980Sapatard@mandriva.com writel(value, priv->io + KIRKWOOD_INT_MASK); 233f9b95980Sapatard@mandriva.com 234*d8d11ba5SRussell King /* enable playback */ 235982b604bSRussell King writel(ctl, priv->io + KIRKWOOD_PLAYCTL); 236f9b95980Sapatard@mandriva.com break; 237f9b95980Sapatard@mandriva.com 238f9b95980Sapatard@mandriva.com case SNDRV_PCM_TRIGGER_STOP: 239f9b95980Sapatard@mandriva.com /* stop audio, disable interrupts */ 240982b604bSRussell King ctl |= KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE; 241982b604bSRussell King writel(ctl, priv->io + KIRKWOOD_PLAYCTL); 242f9b95980Sapatard@mandriva.com 243f9b95980Sapatard@mandriva.com value = readl(priv->io + KIRKWOOD_INT_MASK); 244f9b95980Sapatard@mandriva.com value &= ~KIRKWOOD_INT_CAUSE_PLAY_BYTES; 245f9b95980Sapatard@mandriva.com writel(value, priv->io + KIRKWOOD_INT_MASK); 246f9b95980Sapatard@mandriva.com 247f9b95980Sapatard@mandriva.com /* disable all playbacks */ 248982b604bSRussell King ctl &= ~(KIRKWOOD_PLAYCTL_I2S_EN | KIRKWOOD_PLAYCTL_SPDIF_EN); 249982b604bSRussell King writel(ctl, priv->io + KIRKWOOD_PLAYCTL); 250f9b95980Sapatard@mandriva.com break; 251f9b95980Sapatard@mandriva.com 252f9b95980Sapatard@mandriva.com case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 253f9b95980Sapatard@mandriva.com case SNDRV_PCM_TRIGGER_SUSPEND: 254982b604bSRussell King ctl |= KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE; 255982b604bSRussell King writel(ctl, priv->io + KIRKWOOD_PLAYCTL); 256f9b95980Sapatard@mandriva.com break; 257f9b95980Sapatard@mandriva.com 258f9b95980Sapatard@mandriva.com case SNDRV_PCM_TRIGGER_RESUME: 259f9b95980Sapatard@mandriva.com case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 260982b604bSRussell King ctl &= ~(KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE); 261982b604bSRussell King writel(ctl, priv->io + KIRKWOOD_PLAYCTL); 262f9b95980Sapatard@mandriva.com break; 263f9b95980Sapatard@mandriva.com 264f9b95980Sapatard@mandriva.com default: 265f9b95980Sapatard@mandriva.com return -EINVAL; 266f9b95980Sapatard@mandriva.com } 267f9b95980Sapatard@mandriva.com 268f9b95980Sapatard@mandriva.com return 0; 269f9b95980Sapatard@mandriva.com } 270f9b95980Sapatard@mandriva.com 271f9b95980Sapatard@mandriva.com static int kirkwood_i2s_rec_trigger(struct snd_pcm_substream *substream, 272f9b95980Sapatard@mandriva.com int cmd, struct snd_soc_dai *dai) 273f9b95980Sapatard@mandriva.com { 274f0fba2adSLiam Girdwood struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai); 275*d8d11ba5SRussell King uint32_t ctl, value; 276f9b95980Sapatard@mandriva.com 277f9b95980Sapatard@mandriva.com value = readl(priv->io + KIRKWOOD_RECCTL); 278f9b95980Sapatard@mandriva.com 279f9b95980Sapatard@mandriva.com switch (cmd) { 280f9b95980Sapatard@mandriva.com case SNDRV_PCM_TRIGGER_START: 281*d8d11ba5SRussell King /* configure */ 282*d8d11ba5SRussell King ctl = priv->ctl_rec; 283*d8d11ba5SRussell King value = ctl & ~KIRKWOOD_RECCTL_I2S_EN; 284*d8d11ba5SRussell King writel(value, priv->io + KIRKWOOD_RECCTL); 285*d8d11ba5SRussell King 286*d8d11ba5SRussell King /* enable interrupts */ 287f9b95980Sapatard@mandriva.com value = readl(priv->io + KIRKWOOD_INT_MASK); 288f9b95980Sapatard@mandriva.com value |= KIRKWOOD_INT_CAUSE_REC_BYTES; 289f9b95980Sapatard@mandriva.com writel(value, priv->io + KIRKWOOD_INT_MASK); 290f9b95980Sapatard@mandriva.com 291*d8d11ba5SRussell King /* enable record */ 292*d8d11ba5SRussell King writel(ctl, priv->io + KIRKWOOD_RECCTL); 293f9b95980Sapatard@mandriva.com break; 294f9b95980Sapatard@mandriva.com 295f9b95980Sapatard@mandriva.com case SNDRV_PCM_TRIGGER_STOP: 296f9b95980Sapatard@mandriva.com /* stop audio, disable interrupts */ 297f9b95980Sapatard@mandriva.com value = readl(priv->io + KIRKWOOD_RECCTL); 298b424ec95Sarnaud.patard@rtp-net.org value |= KIRKWOOD_RECCTL_PAUSE | KIRKWOOD_RECCTL_MUTE; 299f9b95980Sapatard@mandriva.com writel(value, priv->io + KIRKWOOD_RECCTL); 300f9b95980Sapatard@mandriva.com 301f9b95980Sapatard@mandriva.com value = readl(priv->io + KIRKWOOD_INT_MASK); 302f9b95980Sapatard@mandriva.com value &= ~KIRKWOOD_INT_CAUSE_REC_BYTES; 303f9b95980Sapatard@mandriva.com writel(value, priv->io + KIRKWOOD_INT_MASK); 304f9b95980Sapatard@mandriva.com 305f9b95980Sapatard@mandriva.com /* disable all records */ 306f9b95980Sapatard@mandriva.com value = readl(priv->io + KIRKWOOD_RECCTL); 307f9b95980Sapatard@mandriva.com value &= ~(KIRKWOOD_RECCTL_I2S_EN | KIRKWOOD_RECCTL_SPDIF_EN); 308f9b95980Sapatard@mandriva.com writel(value, priv->io + KIRKWOOD_RECCTL); 309f9b95980Sapatard@mandriva.com break; 310f9b95980Sapatard@mandriva.com 311f9b95980Sapatard@mandriva.com case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 312f9b95980Sapatard@mandriva.com case SNDRV_PCM_TRIGGER_SUSPEND: 313f9b95980Sapatard@mandriva.com value = readl(priv->io + KIRKWOOD_RECCTL); 314b424ec95Sarnaud.patard@rtp-net.org value |= KIRKWOOD_RECCTL_PAUSE | KIRKWOOD_RECCTL_MUTE; 315f9b95980Sapatard@mandriva.com writel(value, priv->io + KIRKWOOD_RECCTL); 316f9b95980Sapatard@mandriva.com break; 317f9b95980Sapatard@mandriva.com 318f9b95980Sapatard@mandriva.com case SNDRV_PCM_TRIGGER_RESUME: 319f9b95980Sapatard@mandriva.com case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 320f9b95980Sapatard@mandriva.com value = readl(priv->io + KIRKWOOD_RECCTL); 321b424ec95Sarnaud.patard@rtp-net.org value &= ~(KIRKWOOD_RECCTL_PAUSE | KIRKWOOD_RECCTL_MUTE); 322f9b95980Sapatard@mandriva.com writel(value, priv->io + KIRKWOOD_RECCTL); 323f9b95980Sapatard@mandriva.com break; 324f9b95980Sapatard@mandriva.com 325f9b95980Sapatard@mandriva.com default: 326f9b95980Sapatard@mandriva.com return -EINVAL; 327f9b95980Sapatard@mandriva.com } 328f9b95980Sapatard@mandriva.com 329f9b95980Sapatard@mandriva.com return 0; 330f9b95980Sapatard@mandriva.com } 331f9b95980Sapatard@mandriva.com 332f9b95980Sapatard@mandriva.com static int kirkwood_i2s_trigger(struct snd_pcm_substream *substream, int cmd, 333f9b95980Sapatard@mandriva.com struct snd_soc_dai *dai) 334f9b95980Sapatard@mandriva.com { 335f9b95980Sapatard@mandriva.com if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 336f9b95980Sapatard@mandriva.com return kirkwood_i2s_play_trigger(substream, cmd, dai); 337f9b95980Sapatard@mandriva.com else 338f9b95980Sapatard@mandriva.com return kirkwood_i2s_rec_trigger(substream, cmd, dai); 339f9b95980Sapatard@mandriva.com 340f9b95980Sapatard@mandriva.com return 0; 341f9b95980Sapatard@mandriva.com } 342f9b95980Sapatard@mandriva.com 343f0fba2adSLiam Girdwood static int kirkwood_i2s_probe(struct snd_soc_dai *dai) 344f9b95980Sapatard@mandriva.com { 345f0fba2adSLiam Girdwood struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai); 346f9b95980Sapatard@mandriva.com unsigned long value; 347f9b95980Sapatard@mandriva.com unsigned int reg_data; 348f9b95980Sapatard@mandriva.com 349f9b95980Sapatard@mandriva.com /* put system in a "safe" state : */ 350f9b95980Sapatard@mandriva.com /* disable audio interrupts */ 351f9b95980Sapatard@mandriva.com writel(0xffffffff, priv->io + KIRKWOOD_INT_CAUSE); 352f9b95980Sapatard@mandriva.com writel(0, priv->io + KIRKWOOD_INT_MASK); 353f9b95980Sapatard@mandriva.com 354f9b95980Sapatard@mandriva.com reg_data = readl(priv->io + 0x1200); 355f9b95980Sapatard@mandriva.com reg_data &= (~(0x333FF8)); 356f9b95980Sapatard@mandriva.com reg_data |= 0x111D18; 357f9b95980Sapatard@mandriva.com writel(reg_data, priv->io + 0x1200); 358f9b95980Sapatard@mandriva.com 359f9b95980Sapatard@mandriva.com msleep(500); 360f9b95980Sapatard@mandriva.com 361f9b95980Sapatard@mandriva.com reg_data = readl(priv->io + 0x1200); 362f9b95980Sapatard@mandriva.com reg_data &= (~(0x333FF8)); 363f9b95980Sapatard@mandriva.com reg_data |= 0x111D18; 364f9b95980Sapatard@mandriva.com writel(reg_data, priv->io + 0x1200); 365f9b95980Sapatard@mandriva.com 366f9b95980Sapatard@mandriva.com /* disable playback/record */ 367f9b95980Sapatard@mandriva.com value = readl(priv->io + KIRKWOOD_PLAYCTL); 368f9b95980Sapatard@mandriva.com value &= ~(KIRKWOOD_PLAYCTL_I2S_EN|KIRKWOOD_PLAYCTL_SPDIF_EN); 369f9b95980Sapatard@mandriva.com writel(value, priv->io + KIRKWOOD_PLAYCTL); 370f9b95980Sapatard@mandriva.com 371f9b95980Sapatard@mandriva.com value = readl(priv->io + KIRKWOOD_RECCTL); 372f9b95980Sapatard@mandriva.com value &= ~(KIRKWOOD_RECCTL_I2S_EN | KIRKWOOD_RECCTL_SPDIF_EN); 373f9b95980Sapatard@mandriva.com writel(value, priv->io + KIRKWOOD_RECCTL); 374f9b95980Sapatard@mandriva.com 375f9b95980Sapatard@mandriva.com return 0; 376f9b95980Sapatard@mandriva.com 377f9b95980Sapatard@mandriva.com } 378f9b95980Sapatard@mandriva.com 379f0fba2adSLiam Girdwood static int kirkwood_i2s_remove(struct snd_soc_dai *dai) 380f9b95980Sapatard@mandriva.com { 381f0fba2adSLiam Girdwood return 0; 382f9b95980Sapatard@mandriva.com } 383f9b95980Sapatard@mandriva.com 38485e7652dSLars-Peter Clausen static const struct snd_soc_dai_ops kirkwood_i2s_dai_ops = { 385f0fba2adSLiam Girdwood .startup = kirkwood_i2s_startup, 386f9b95980Sapatard@mandriva.com .trigger = kirkwood_i2s_trigger, 387f9b95980Sapatard@mandriva.com .hw_params = kirkwood_i2s_hw_params, 388f9b95980Sapatard@mandriva.com .set_fmt = kirkwood_i2s_set_fmt, 389f9b95980Sapatard@mandriva.com }; 390f9b95980Sapatard@mandriva.com 391f9b95980Sapatard@mandriva.com 392f0fba2adSLiam Girdwood static struct snd_soc_dai_driver kirkwood_i2s_dai = { 393f9b95980Sapatard@mandriva.com .probe = kirkwood_i2s_probe, 394f9b95980Sapatard@mandriva.com .remove = kirkwood_i2s_remove, 395f9b95980Sapatard@mandriva.com .playback = { 396f9b95980Sapatard@mandriva.com .channels_min = 1, 397f9b95980Sapatard@mandriva.com .channels_max = 2, 398f9b95980Sapatard@mandriva.com .rates = KIRKWOOD_I2S_RATES, 399f9b95980Sapatard@mandriva.com .formats = KIRKWOOD_I2S_FORMATS,}, 400f9b95980Sapatard@mandriva.com .capture = { 401f9b95980Sapatard@mandriva.com .channels_min = 1, 402f9b95980Sapatard@mandriva.com .channels_max = 2, 403f9b95980Sapatard@mandriva.com .rates = KIRKWOOD_I2S_RATES, 404f9b95980Sapatard@mandriva.com .formats = KIRKWOOD_I2S_FORMATS,}, 405f9b95980Sapatard@mandriva.com .ops = &kirkwood_i2s_dai_ops, 406f9b95980Sapatard@mandriva.com }; 407f9b95980Sapatard@mandriva.com 408f9b95980Sapatard@mandriva.com static __devinit int kirkwood_i2s_dev_probe(struct platform_device *pdev) 409f9b95980Sapatard@mandriva.com { 410f9b95980Sapatard@mandriva.com struct resource *mem; 411f9b95980Sapatard@mandriva.com struct kirkwood_asoc_platform_data *data = 412f9b95980Sapatard@mandriva.com pdev->dev.platform_data; 413f0fba2adSLiam Girdwood struct kirkwood_dma_data *priv; 414f9b95980Sapatard@mandriva.com int err; 415f9b95980Sapatard@mandriva.com 416dbc517bfSRussell King priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); 417f9b95980Sapatard@mandriva.com if (!priv) { 418f9b95980Sapatard@mandriva.com dev_err(&pdev->dev, "allocation failed\n"); 419dbc517bfSRussell King return -ENOMEM; 420f9b95980Sapatard@mandriva.com } 421f0fba2adSLiam Girdwood dev_set_drvdata(&pdev->dev, priv); 422f9b95980Sapatard@mandriva.com 423f9b95980Sapatard@mandriva.com mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); 424f9b95980Sapatard@mandriva.com if (!mem) { 425f9b95980Sapatard@mandriva.com dev_err(&pdev->dev, "platform_get_resource failed\n"); 426dbc517bfSRussell King return -ENXIO; 427f9b95980Sapatard@mandriva.com } 428f9b95980Sapatard@mandriva.com 429dbc517bfSRussell King priv->io = devm_request_and_ioremap(&pdev->dev, mem); 430f9b95980Sapatard@mandriva.com if (!priv->io) { 431dbc517bfSRussell King dev_err(&pdev->dev, "devm_request_and_ioremap failed\n"); 432dbc517bfSRussell King return -ENOMEM; 433f9b95980Sapatard@mandriva.com } 434f9b95980Sapatard@mandriva.com 435f9b95980Sapatard@mandriva.com priv->irq = platform_get_irq(pdev, 0); 436f9b95980Sapatard@mandriva.com if (priv->irq <= 0) { 437f9b95980Sapatard@mandriva.com dev_err(&pdev->dev, "platform_get_irq failed\n"); 438dbc517bfSRussell King return -ENXIO; 439f9b95980Sapatard@mandriva.com } 440f9b95980Sapatard@mandriva.com 441d4d9820bSAxel Lin if (!data) { 442f9b95980Sapatard@mandriva.com dev_err(&pdev->dev, "no platform data ?!\n"); 443dbc517bfSRussell King return -EINVAL; 444f9b95980Sapatard@mandriva.com } 445f9b95980Sapatard@mandriva.com 446f9b95980Sapatard@mandriva.com priv->burst = data->burst; 447f9b95980Sapatard@mandriva.com 448dbc517bfSRussell King priv->clk = devm_clk_get(&pdev->dev, NULL); 449e919c716SAndrew Lunn if (IS_ERR(priv->clk)) { 450e919c716SAndrew Lunn dev_err(&pdev->dev, "no clock\n"); 451dbc517bfSRussell King return PTR_ERR(priv->clk); 452e919c716SAndrew Lunn } 453dbc517bfSRussell King 454dbc517bfSRussell King err = clk_prepare_enable(priv->clk); 455dbc517bfSRussell King if (err < 0) 456dbc517bfSRussell King return err; 457e919c716SAndrew Lunn 458*d8d11ba5SRussell King priv->extclk = clk_get(&pdev->dev, "extclk"); 459*d8d11ba5SRussell King if (!IS_ERR(priv->extclk)) { 460*d8d11ba5SRussell King if (priv->extclk == priv->clk) { 461*d8d11ba5SRussell King clk_put(priv->extclk); 462*d8d11ba5SRussell King priv->extclk = ERR_PTR(-EINVAL); 463*d8d11ba5SRussell King } else { 464*d8d11ba5SRussell King dev_info(&pdev->dev, "found external clock\n"); 465*d8d11ba5SRussell King clk_prepare_enable(priv->extclk); 466*d8d11ba5SRussell King soc_dai = &kirkwood_i2s_dai_extclk; 467*d8d11ba5SRussell King } 468*d8d11ba5SRussell King } 469*d8d11ba5SRussell King 470*d8d11ba5SRussell King /* Some sensible defaults - this reflects the powerup values */ 471*d8d11ba5SRussell King priv->ctl_play = KIRKWOOD_PLAYCTL_SIZE_24; 472*d8d11ba5SRussell King priv->ctl_rec = KIRKWOOD_RECCTL_SIZE_24; 473*d8d11ba5SRussell King 474*d8d11ba5SRussell King /* Select the burst size */ 475*d8d11ba5SRussell King if (data->burst == 32) { 476*d8d11ba5SRussell King priv->ctl_play |= KIRKWOOD_PLAYCTL_BURST_32; 477*d8d11ba5SRussell King priv->ctl_rec |= KIRKWOOD_RECCTL_BURST_32; 478*d8d11ba5SRussell King } else { 479*d8d11ba5SRussell King priv->ctl_play |= KIRKWOOD_PLAYCTL_BURST_128; 480*d8d11ba5SRussell King priv->ctl_rec |= KIRKWOOD_RECCTL_BURST_128; 481*d8d11ba5SRussell King } 482*d8d11ba5SRussell King 483baffab28SSimon Baatz err = snd_soc_register_dai(&pdev->dev, &kirkwood_i2s_dai); 484baffab28SSimon Baatz if (!err) 485baffab28SSimon Baatz return 0; 486baffab28SSimon Baatz dev_err(&pdev->dev, "snd_soc_register_dai failed\n"); 487baffab28SSimon Baatz 488baffab28SSimon Baatz clk_disable_unprepare(priv->clk); 489f9b95980Sapatard@mandriva.com 490f9b95980Sapatard@mandriva.com return err; 491f9b95980Sapatard@mandriva.com } 492f9b95980Sapatard@mandriva.com 493f9b95980Sapatard@mandriva.com static __devexit int kirkwood_i2s_dev_remove(struct platform_device *pdev) 494f9b95980Sapatard@mandriva.com { 495f0fba2adSLiam Girdwood struct kirkwood_dma_data *priv = dev_get_drvdata(&pdev->dev); 496f0fba2adSLiam Girdwood 497f0fba2adSLiam Girdwood snd_soc_unregister_dai(&pdev->dev); 498e919c716SAndrew Lunn 499e919c716SAndrew Lunn clk_disable_unprepare(priv->clk); 500f0fba2adSLiam Girdwood 501f9b95980Sapatard@mandriva.com return 0; 502f9b95980Sapatard@mandriva.com } 503f9b95980Sapatard@mandriva.com 504f9b95980Sapatard@mandriva.com static struct platform_driver kirkwood_i2s_driver = { 505f9b95980Sapatard@mandriva.com .probe = kirkwood_i2s_dev_probe, 50648860e40SAxel Lin .remove = __devexit_p(kirkwood_i2s_dev_remove), 507f9b95980Sapatard@mandriva.com .driver = { 508f9b95980Sapatard@mandriva.com .name = DRV_NAME, 509f9b95980Sapatard@mandriva.com .owner = THIS_MODULE, 510f9b95980Sapatard@mandriva.com }, 511f9b95980Sapatard@mandriva.com }; 512f9b95980Sapatard@mandriva.com 51341b10225SAxel Lin module_platform_driver(kirkwood_i2s_driver); 514f9b95980Sapatard@mandriva.com 515f9b95980Sapatard@mandriva.com /* Module information */ 51669737897SArnaud Patard (Rtp) MODULE_AUTHOR("Arnaud Patard, <arnaud.patard@rtp-net.org>"); 517f9b95980Sapatard@mandriva.com MODULE_DESCRIPTION("Kirkwood I2S SoC Interface"); 518f9b95980Sapatard@mandriva.com MODULE_LICENSE("GPL"); 519f9b95980Sapatard@mandriva.com MODULE_ALIAS("platform:kirkwood-i2s"); 520