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 102363589bfSRussell King static void kirkwood_set_rate(struct snd_soc_dai *dai, 103363589bfSRussell King struct kirkwood_dma_data *priv, unsigned long rate) 104363589bfSRussell King { 105363589bfSRussell King uint32_t clks_ctrl; 106363589bfSRussell King 107363589bfSRussell King if (rate == 44100 || rate == 48000 || rate == 96000) { 108363589bfSRussell King /* use internal dco for supported rates */ 109363589bfSRussell King dev_dbg(dai->dev, "%s: dco set rate = %lu\n", 110363589bfSRussell King __func__, rate); 111363589bfSRussell King kirkwood_set_dco(priv->io, rate); 112363589bfSRussell King 113363589bfSRussell King clks_ctrl = KIRKWOOD_MCLK_SOURCE_DCO; 114363589bfSRussell King } else if (!IS_ERR(priv->extclk)) { 115363589bfSRussell King /* use optional external clk for other rates */ 116363589bfSRussell King dev_dbg(dai->dev, "%s: extclk set rate = %lu -> %lu\n", 117363589bfSRussell King __func__, rate, 256 * rate); 118363589bfSRussell King clk_set_rate(priv->extclk, 256 * rate); 119363589bfSRussell King 120363589bfSRussell King clks_ctrl = KIRKWOOD_MCLK_SOURCE_EXTCLK; 121363589bfSRussell King } 122363589bfSRussell King writel(clks_ctrl, priv->io + KIRKWOOD_CLOCKS_CTRL); 123363589bfSRussell King } 124363589bfSRussell King 125f0fba2adSLiam Girdwood static int kirkwood_i2s_startup(struct snd_pcm_substream *substream, 126f0fba2adSLiam Girdwood struct snd_soc_dai *dai) 127f0fba2adSLiam Girdwood { 128f0fba2adSLiam Girdwood struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai); 129f0fba2adSLiam Girdwood 130f0fba2adSLiam Girdwood snd_soc_dai_set_dma_data(dai, substream, priv); 131f0fba2adSLiam Girdwood return 0; 132f0fba2adSLiam Girdwood } 133f0fba2adSLiam Girdwood 134f9b95980Sapatard@mandriva.com static int kirkwood_i2s_hw_params(struct snd_pcm_substream *substream, 135f9b95980Sapatard@mandriva.com struct snd_pcm_hw_params *params, 136f9b95980Sapatard@mandriva.com struct snd_soc_dai *dai) 137f9b95980Sapatard@mandriva.com { 138f0fba2adSLiam Girdwood struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai); 139d8d11ba5SRussell King uint32_t ctl_play, ctl_rec; 140d8d11ba5SRussell King unsigned int i2s_reg; 141d8d11ba5SRussell King unsigned long i2s_value; 142f9b95980Sapatard@mandriva.com 143f9b95980Sapatard@mandriva.com if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { 144f9b95980Sapatard@mandriva.com i2s_reg = KIRKWOOD_I2S_PLAYCTL; 145f9b95980Sapatard@mandriva.com } else { 146f9b95980Sapatard@mandriva.com i2s_reg = KIRKWOOD_I2S_RECCTL; 147f9b95980Sapatard@mandriva.com } 148f9b95980Sapatard@mandriva.com 149363589bfSRussell King kirkwood_set_rate(dai, priv, params_rate(params)); 150f9b95980Sapatard@mandriva.com 151f9b95980Sapatard@mandriva.com i2s_value = readl(priv->io+i2s_reg); 152f9b95980Sapatard@mandriva.com i2s_value &= ~KIRKWOOD_I2S_CTL_SIZE_MASK; 153f9b95980Sapatard@mandriva.com 154f9b95980Sapatard@mandriva.com /* 155f9b95980Sapatard@mandriva.com * Size settings in play/rec i2s control regs and play/rec control 156f9b95980Sapatard@mandriva.com * regs must be the same. 157f9b95980Sapatard@mandriva.com */ 158f9b95980Sapatard@mandriva.com switch (params_format(params)) { 159f9b95980Sapatard@mandriva.com case SNDRV_PCM_FORMAT_S16_LE: 160f9b95980Sapatard@mandriva.com i2s_value |= KIRKWOOD_I2S_CTL_SIZE_16; 161d8d11ba5SRussell King ctl_play = KIRKWOOD_PLAYCTL_SIZE_16_C | 162d8d11ba5SRussell King KIRKWOOD_PLAYCTL_I2S_EN; 163d8d11ba5SRussell King ctl_rec = KIRKWOOD_RECCTL_SIZE_16_C | 164d8d11ba5SRussell King KIRKWOOD_RECCTL_I2S_EN; 165f9b95980Sapatard@mandriva.com break; 166f9b95980Sapatard@mandriva.com /* 167f9b95980Sapatard@mandriva.com * doesn't work... S20_3LE != kirkwood 20bit format ? 168f9b95980Sapatard@mandriva.com * 169f9b95980Sapatard@mandriva.com case SNDRV_PCM_FORMAT_S20_3LE: 170f9b95980Sapatard@mandriva.com i2s_value |= KIRKWOOD_I2S_CTL_SIZE_20; 171d8d11ba5SRussell King ctl_play = KIRKWOOD_PLAYCTL_SIZE_20 | 172d8d11ba5SRussell King KIRKWOOD_PLAYCTL_I2S_EN; 173d8d11ba5SRussell King ctl_rec = KIRKWOOD_RECCTL_SIZE_20 | 174d8d11ba5SRussell King KIRKWOOD_RECCTL_I2S_EN; 175f9b95980Sapatard@mandriva.com break; 176f9b95980Sapatard@mandriva.com */ 177f9b95980Sapatard@mandriva.com case SNDRV_PCM_FORMAT_S24_LE: 178f9b95980Sapatard@mandriva.com i2s_value |= KIRKWOOD_I2S_CTL_SIZE_24; 179d8d11ba5SRussell King ctl_play = KIRKWOOD_PLAYCTL_SIZE_24 | 180d8d11ba5SRussell King KIRKWOOD_PLAYCTL_I2S_EN; 181d8d11ba5SRussell King ctl_rec = KIRKWOOD_RECCTL_SIZE_24 | 182d8d11ba5SRussell King KIRKWOOD_RECCTL_I2S_EN; 183f9b95980Sapatard@mandriva.com break; 184f9b95980Sapatard@mandriva.com case SNDRV_PCM_FORMAT_S32_LE: 185f9b95980Sapatard@mandriva.com i2s_value |= KIRKWOOD_I2S_CTL_SIZE_32; 186d8d11ba5SRussell King ctl_play = KIRKWOOD_PLAYCTL_SIZE_32 | 187d8d11ba5SRussell King KIRKWOOD_PLAYCTL_I2S_EN; 188d8d11ba5SRussell King ctl_rec = KIRKWOOD_RECCTL_SIZE_32 | 189d8d11ba5SRussell King KIRKWOOD_RECCTL_I2S_EN; 190f9b95980Sapatard@mandriva.com break; 191f9b95980Sapatard@mandriva.com default: 192f9b95980Sapatard@mandriva.com return -EINVAL; 193f9b95980Sapatard@mandriva.com } 194dfe4c936Sarnaud.patard@rtp-net.org 195dfe4c936Sarnaud.patard@rtp-net.org if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { 196dfe4c936Sarnaud.patard@rtp-net.org if (params_channels(params) == 1) 197d8d11ba5SRussell King ctl_play |= KIRKWOOD_PLAYCTL_MONO_BOTH; 198dfe4c936Sarnaud.patard@rtp-net.org else 199d8d11ba5SRussell King ctl_play |= KIRKWOOD_PLAYCTL_MONO_OFF; 200d8d11ba5SRussell King 201d8d11ba5SRussell King priv->ctl_play &= ~(KIRKWOOD_PLAYCTL_MONO_MASK | 202d8d11ba5SRussell King KIRKWOOD_PLAYCTL_I2S_EN | 203d8d11ba5SRussell King KIRKWOOD_PLAYCTL_SPDIF_EN | 204d8d11ba5SRussell King KIRKWOOD_PLAYCTL_SIZE_MASK); 205d8d11ba5SRussell King priv->ctl_play |= ctl_play; 206d8d11ba5SRussell King } else { 207d8d11ba5SRussell King priv->ctl_rec &= ~KIRKWOOD_RECCTL_SIZE_MASK; 208d8d11ba5SRussell King priv->ctl_rec |= ctl_rec; 209dfe4c936Sarnaud.patard@rtp-net.org } 210dfe4c936Sarnaud.patard@rtp-net.org 211f9b95980Sapatard@mandriva.com writel(i2s_value, priv->io+i2s_reg); 212f9b95980Sapatard@mandriva.com 213f9b95980Sapatard@mandriva.com return 0; 214f9b95980Sapatard@mandriva.com } 215f9b95980Sapatard@mandriva.com 216f9b95980Sapatard@mandriva.com static int kirkwood_i2s_play_trigger(struct snd_pcm_substream *substream, 217f9b95980Sapatard@mandriva.com int cmd, struct snd_soc_dai *dai) 218f9b95980Sapatard@mandriva.com { 219f0fba2adSLiam Girdwood struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai); 220982b604bSRussell King uint32_t ctl, value; 221f9b95980Sapatard@mandriva.com 222982b604bSRussell King ctl = readl(priv->io + KIRKWOOD_PLAYCTL); 223982b604bSRussell King if (ctl & KIRKWOOD_PLAYCTL_PAUSE) { 224982b604bSRussell King unsigned timeout = 5000; 225f9b95980Sapatard@mandriva.com /* 226982b604bSRussell King * The Armada510 spec says that if we enter pause mode, the 227982b604bSRussell King * busy bit must be read back as clear _twice_. Make sure 228982b604bSRussell King * we respect that otherwise we get DMA underruns. 229f9b95980Sapatard@mandriva.com */ 230982b604bSRussell King do { 231982b604bSRussell King value = ctl; 232982b604bSRussell King ctl = readl(priv->io + KIRKWOOD_PLAYCTL); 233982b604bSRussell King if (!((ctl | value) & KIRKWOOD_PLAYCTL_PLAY_BUSY)) 234982b604bSRussell King break; 235982b604bSRussell King udelay(1); 236982b604bSRussell King } while (timeout--); 237982b604bSRussell King 238982b604bSRussell King if ((ctl | value) & KIRKWOOD_PLAYCTL_PLAY_BUSY) 239982b604bSRussell King dev_notice(dai->dev, "timed out waiting for busy to deassert: %08x\n", 240982b604bSRussell King ctl); 241982b604bSRussell King } 242f9b95980Sapatard@mandriva.com 243f9b95980Sapatard@mandriva.com switch (cmd) { 244f9b95980Sapatard@mandriva.com case SNDRV_PCM_TRIGGER_START: 245d8d11ba5SRussell King /* configure */ 246d8d11ba5SRussell King ctl = priv->ctl_play; 247d8d11ba5SRussell King value = ctl & ~(KIRKWOOD_PLAYCTL_I2S_EN | 248d8d11ba5SRussell King KIRKWOOD_PLAYCTL_SPDIF_EN); 249d8d11ba5SRussell King writel(value, priv->io + KIRKWOOD_PLAYCTL); 250d8d11ba5SRussell King 251d8d11ba5SRussell King /* enable interrupts */ 252f9b95980Sapatard@mandriva.com value = readl(priv->io + KIRKWOOD_INT_MASK); 253f9b95980Sapatard@mandriva.com value |= KIRKWOOD_INT_CAUSE_PLAY_BYTES; 254f9b95980Sapatard@mandriva.com writel(value, priv->io + KIRKWOOD_INT_MASK); 255f9b95980Sapatard@mandriva.com 256d8d11ba5SRussell King /* enable playback */ 257982b604bSRussell King writel(ctl, priv->io + KIRKWOOD_PLAYCTL); 258f9b95980Sapatard@mandriva.com break; 259f9b95980Sapatard@mandriva.com 260f9b95980Sapatard@mandriva.com case SNDRV_PCM_TRIGGER_STOP: 261f9b95980Sapatard@mandriva.com /* stop audio, disable interrupts */ 262982b604bSRussell King ctl |= KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE; 263982b604bSRussell King writel(ctl, priv->io + KIRKWOOD_PLAYCTL); 264f9b95980Sapatard@mandriva.com 265f9b95980Sapatard@mandriva.com value = readl(priv->io + KIRKWOOD_INT_MASK); 266f9b95980Sapatard@mandriva.com value &= ~KIRKWOOD_INT_CAUSE_PLAY_BYTES; 267f9b95980Sapatard@mandriva.com writel(value, priv->io + KIRKWOOD_INT_MASK); 268f9b95980Sapatard@mandriva.com 269f9b95980Sapatard@mandriva.com /* disable all playbacks */ 270982b604bSRussell King ctl &= ~(KIRKWOOD_PLAYCTL_I2S_EN | KIRKWOOD_PLAYCTL_SPDIF_EN); 271982b604bSRussell King writel(ctl, priv->io + KIRKWOOD_PLAYCTL); 272f9b95980Sapatard@mandriva.com break; 273f9b95980Sapatard@mandriva.com 274f9b95980Sapatard@mandriva.com case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 275f9b95980Sapatard@mandriva.com case SNDRV_PCM_TRIGGER_SUSPEND: 276982b604bSRussell King ctl |= KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE; 277982b604bSRussell King writel(ctl, priv->io + KIRKWOOD_PLAYCTL); 278f9b95980Sapatard@mandriva.com break; 279f9b95980Sapatard@mandriva.com 280f9b95980Sapatard@mandriva.com case SNDRV_PCM_TRIGGER_RESUME: 281f9b95980Sapatard@mandriva.com case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 282982b604bSRussell King ctl &= ~(KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE); 283982b604bSRussell King writel(ctl, priv->io + KIRKWOOD_PLAYCTL); 284f9b95980Sapatard@mandriva.com break; 285f9b95980Sapatard@mandriva.com 286f9b95980Sapatard@mandriva.com default: 287f9b95980Sapatard@mandriva.com return -EINVAL; 288f9b95980Sapatard@mandriva.com } 289f9b95980Sapatard@mandriva.com 290f9b95980Sapatard@mandriva.com return 0; 291f9b95980Sapatard@mandriva.com } 292f9b95980Sapatard@mandriva.com 293f9b95980Sapatard@mandriva.com static int kirkwood_i2s_rec_trigger(struct snd_pcm_substream *substream, 294f9b95980Sapatard@mandriva.com int cmd, struct snd_soc_dai *dai) 295f9b95980Sapatard@mandriva.com { 296f0fba2adSLiam Girdwood struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai); 297d8d11ba5SRussell King uint32_t ctl, value; 298f9b95980Sapatard@mandriva.com 299f9b95980Sapatard@mandriva.com value = readl(priv->io + KIRKWOOD_RECCTL); 300f9b95980Sapatard@mandriva.com 301f9b95980Sapatard@mandriva.com switch (cmd) { 302f9b95980Sapatard@mandriva.com case SNDRV_PCM_TRIGGER_START: 303d8d11ba5SRussell King /* configure */ 304d8d11ba5SRussell King ctl = priv->ctl_rec; 305d8d11ba5SRussell King value = ctl & ~KIRKWOOD_RECCTL_I2S_EN; 306d8d11ba5SRussell King writel(value, priv->io + KIRKWOOD_RECCTL); 307d8d11ba5SRussell King 308d8d11ba5SRussell King /* enable interrupts */ 309f9b95980Sapatard@mandriva.com value = readl(priv->io + KIRKWOOD_INT_MASK); 310f9b95980Sapatard@mandriva.com value |= KIRKWOOD_INT_CAUSE_REC_BYTES; 311f9b95980Sapatard@mandriva.com writel(value, priv->io + KIRKWOOD_INT_MASK); 312f9b95980Sapatard@mandriva.com 313d8d11ba5SRussell King /* enable record */ 314d8d11ba5SRussell King writel(ctl, priv->io + KIRKWOOD_RECCTL); 315f9b95980Sapatard@mandriva.com break; 316f9b95980Sapatard@mandriva.com 317f9b95980Sapatard@mandriva.com case SNDRV_PCM_TRIGGER_STOP: 318f9b95980Sapatard@mandriva.com /* stop audio, disable interrupts */ 319f9b95980Sapatard@mandriva.com value = readl(priv->io + KIRKWOOD_RECCTL); 320b424ec95Sarnaud.patard@rtp-net.org value |= KIRKWOOD_RECCTL_PAUSE | KIRKWOOD_RECCTL_MUTE; 321f9b95980Sapatard@mandriva.com writel(value, priv->io + KIRKWOOD_RECCTL); 322f9b95980Sapatard@mandriva.com 323f9b95980Sapatard@mandriva.com value = readl(priv->io + KIRKWOOD_INT_MASK); 324f9b95980Sapatard@mandriva.com value &= ~KIRKWOOD_INT_CAUSE_REC_BYTES; 325f9b95980Sapatard@mandriva.com writel(value, priv->io + KIRKWOOD_INT_MASK); 326f9b95980Sapatard@mandriva.com 327f9b95980Sapatard@mandriva.com /* disable all records */ 328f9b95980Sapatard@mandriva.com value = readl(priv->io + KIRKWOOD_RECCTL); 329f9b95980Sapatard@mandriva.com value &= ~(KIRKWOOD_RECCTL_I2S_EN | KIRKWOOD_RECCTL_SPDIF_EN); 330f9b95980Sapatard@mandriva.com writel(value, priv->io + KIRKWOOD_RECCTL); 331f9b95980Sapatard@mandriva.com break; 332f9b95980Sapatard@mandriva.com 333f9b95980Sapatard@mandriva.com case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 334f9b95980Sapatard@mandriva.com case SNDRV_PCM_TRIGGER_SUSPEND: 335f9b95980Sapatard@mandriva.com value = readl(priv->io + KIRKWOOD_RECCTL); 336b424ec95Sarnaud.patard@rtp-net.org value |= KIRKWOOD_RECCTL_PAUSE | KIRKWOOD_RECCTL_MUTE; 337f9b95980Sapatard@mandriva.com writel(value, priv->io + KIRKWOOD_RECCTL); 338f9b95980Sapatard@mandriva.com break; 339f9b95980Sapatard@mandriva.com 340f9b95980Sapatard@mandriva.com case SNDRV_PCM_TRIGGER_RESUME: 341f9b95980Sapatard@mandriva.com case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 342f9b95980Sapatard@mandriva.com value = readl(priv->io + KIRKWOOD_RECCTL); 343b424ec95Sarnaud.patard@rtp-net.org value &= ~(KIRKWOOD_RECCTL_PAUSE | KIRKWOOD_RECCTL_MUTE); 344f9b95980Sapatard@mandriva.com writel(value, priv->io + KIRKWOOD_RECCTL); 345f9b95980Sapatard@mandriva.com break; 346f9b95980Sapatard@mandriva.com 347f9b95980Sapatard@mandriva.com default: 348f9b95980Sapatard@mandriva.com return -EINVAL; 349f9b95980Sapatard@mandriva.com } 350f9b95980Sapatard@mandriva.com 351f9b95980Sapatard@mandriva.com return 0; 352f9b95980Sapatard@mandriva.com } 353f9b95980Sapatard@mandriva.com 354f9b95980Sapatard@mandriva.com static int kirkwood_i2s_trigger(struct snd_pcm_substream *substream, int cmd, 355f9b95980Sapatard@mandriva.com struct snd_soc_dai *dai) 356f9b95980Sapatard@mandriva.com { 357f9b95980Sapatard@mandriva.com if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 358f9b95980Sapatard@mandriva.com return kirkwood_i2s_play_trigger(substream, cmd, dai); 359f9b95980Sapatard@mandriva.com else 360f9b95980Sapatard@mandriva.com return kirkwood_i2s_rec_trigger(substream, cmd, dai); 361f9b95980Sapatard@mandriva.com 362f9b95980Sapatard@mandriva.com return 0; 363f9b95980Sapatard@mandriva.com } 364f9b95980Sapatard@mandriva.com 365f0fba2adSLiam Girdwood static int kirkwood_i2s_probe(struct snd_soc_dai *dai) 366f9b95980Sapatard@mandriva.com { 367f0fba2adSLiam Girdwood struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai); 368f9b95980Sapatard@mandriva.com unsigned long value; 369f9b95980Sapatard@mandriva.com unsigned int reg_data; 370f9b95980Sapatard@mandriva.com 371f9b95980Sapatard@mandriva.com /* put system in a "safe" state : */ 372f9b95980Sapatard@mandriva.com /* disable audio interrupts */ 373f9b95980Sapatard@mandriva.com writel(0xffffffff, priv->io + KIRKWOOD_INT_CAUSE); 374f9b95980Sapatard@mandriva.com writel(0, priv->io + KIRKWOOD_INT_MASK); 375f9b95980Sapatard@mandriva.com 376f9b95980Sapatard@mandriva.com reg_data = readl(priv->io + 0x1200); 377f9b95980Sapatard@mandriva.com reg_data &= (~(0x333FF8)); 378f9b95980Sapatard@mandriva.com reg_data |= 0x111D18; 379f9b95980Sapatard@mandriva.com writel(reg_data, priv->io + 0x1200); 380f9b95980Sapatard@mandriva.com 381f9b95980Sapatard@mandriva.com msleep(500); 382f9b95980Sapatard@mandriva.com 383f9b95980Sapatard@mandriva.com reg_data = readl(priv->io + 0x1200); 384f9b95980Sapatard@mandriva.com reg_data &= (~(0x333FF8)); 385f9b95980Sapatard@mandriva.com reg_data |= 0x111D18; 386f9b95980Sapatard@mandriva.com writel(reg_data, priv->io + 0x1200); 387f9b95980Sapatard@mandriva.com 388f9b95980Sapatard@mandriva.com /* disable playback/record */ 389f9b95980Sapatard@mandriva.com value = readl(priv->io + KIRKWOOD_PLAYCTL); 390f9b95980Sapatard@mandriva.com value &= ~(KIRKWOOD_PLAYCTL_I2S_EN|KIRKWOOD_PLAYCTL_SPDIF_EN); 391f9b95980Sapatard@mandriva.com writel(value, priv->io + KIRKWOOD_PLAYCTL); 392f9b95980Sapatard@mandriva.com 393f9b95980Sapatard@mandriva.com value = readl(priv->io + KIRKWOOD_RECCTL); 394f9b95980Sapatard@mandriva.com value &= ~(KIRKWOOD_RECCTL_I2S_EN | KIRKWOOD_RECCTL_SPDIF_EN); 395f9b95980Sapatard@mandriva.com writel(value, priv->io + KIRKWOOD_RECCTL); 396f9b95980Sapatard@mandriva.com 397f9b95980Sapatard@mandriva.com return 0; 398f9b95980Sapatard@mandriva.com 399f9b95980Sapatard@mandriva.com } 400f9b95980Sapatard@mandriva.com 401f0fba2adSLiam Girdwood static int kirkwood_i2s_remove(struct snd_soc_dai *dai) 402f9b95980Sapatard@mandriva.com { 403f0fba2adSLiam Girdwood return 0; 404f9b95980Sapatard@mandriva.com } 405f9b95980Sapatard@mandriva.com 40685e7652dSLars-Peter Clausen static const struct snd_soc_dai_ops kirkwood_i2s_dai_ops = { 407f0fba2adSLiam Girdwood .startup = kirkwood_i2s_startup, 408f9b95980Sapatard@mandriva.com .trigger = kirkwood_i2s_trigger, 409f9b95980Sapatard@mandriva.com .hw_params = kirkwood_i2s_hw_params, 410f9b95980Sapatard@mandriva.com .set_fmt = kirkwood_i2s_set_fmt, 411f9b95980Sapatard@mandriva.com }; 412f9b95980Sapatard@mandriva.com 413f9b95980Sapatard@mandriva.com 414f0fba2adSLiam Girdwood static struct snd_soc_dai_driver kirkwood_i2s_dai = { 415f9b95980Sapatard@mandriva.com .probe = kirkwood_i2s_probe, 416f9b95980Sapatard@mandriva.com .remove = kirkwood_i2s_remove, 417f9b95980Sapatard@mandriva.com .playback = { 418f9b95980Sapatard@mandriva.com .channels_min = 1, 419f9b95980Sapatard@mandriva.com .channels_max = 2, 420f9b95980Sapatard@mandriva.com .rates = KIRKWOOD_I2S_RATES, 421363589bfSRussell King .formats = KIRKWOOD_I2S_FORMATS, 422363589bfSRussell King }, 423f9b95980Sapatard@mandriva.com .capture = { 424f9b95980Sapatard@mandriva.com .channels_min = 1, 425f9b95980Sapatard@mandriva.com .channels_max = 2, 426f9b95980Sapatard@mandriva.com .rates = KIRKWOOD_I2S_RATES, 427363589bfSRussell King .formats = KIRKWOOD_I2S_FORMATS, 428363589bfSRussell King }, 429363589bfSRussell King .ops = &kirkwood_i2s_dai_ops, 430363589bfSRussell King }; 431363589bfSRussell King 432363589bfSRussell King static struct snd_soc_dai_driver kirkwood_i2s_dai_extclk = { 433363589bfSRussell King .probe = kirkwood_i2s_probe, 434363589bfSRussell King .remove = kirkwood_i2s_remove, 435363589bfSRussell King .playback = { 436363589bfSRussell King .channels_min = 1, 437363589bfSRussell King .channels_max = 2, 438363589bfSRussell King .rates = SNDRV_PCM_RATE_8000_192000 | 439363589bfSRussell King SNDRV_PCM_RATE_CONTINUOUS | 440363589bfSRussell King SNDRV_PCM_RATE_KNOT, 441363589bfSRussell King .formats = KIRKWOOD_I2S_FORMATS, 442363589bfSRussell King }, 443363589bfSRussell King .capture = { 444363589bfSRussell King .channels_min = 1, 445363589bfSRussell King .channels_max = 2, 446363589bfSRussell King .rates = SNDRV_PCM_RATE_8000_192000 | 447363589bfSRussell King SNDRV_PCM_RATE_CONTINUOUS | 448363589bfSRussell King SNDRV_PCM_RATE_KNOT, 449363589bfSRussell King .formats = KIRKWOOD_I2S_FORMATS, 450363589bfSRussell King }, 451f9b95980Sapatard@mandriva.com .ops = &kirkwood_i2s_dai_ops, 452f9b95980Sapatard@mandriva.com }; 453f9b95980Sapatard@mandriva.com 45483d85f53SKuninori Morimoto static const struct snd_soc_component_driver kirkwood_i2s_component = { 45583d85f53SKuninori Morimoto .name = DRV_NAME, 45683d85f53SKuninori Morimoto }; 45783d85f53SKuninori Morimoto 45834e15fbdSBill Pemberton static int kirkwood_i2s_dev_probe(struct platform_device *pdev) 459f9b95980Sapatard@mandriva.com { 460363589bfSRussell King struct kirkwood_asoc_platform_data *data = pdev->dev.platform_data; 461363589bfSRussell King struct snd_soc_dai_driver *soc_dai = &kirkwood_i2s_dai; 462f0fba2adSLiam Girdwood struct kirkwood_dma_data *priv; 463363589bfSRussell King struct resource *mem; 464f9b95980Sapatard@mandriva.com int err; 465f9b95980Sapatard@mandriva.com 466dbc517bfSRussell King priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); 467f9b95980Sapatard@mandriva.com if (!priv) { 468f9b95980Sapatard@mandriva.com dev_err(&pdev->dev, "allocation failed\n"); 469dbc517bfSRussell King return -ENOMEM; 470f9b95980Sapatard@mandriva.com } 471f0fba2adSLiam Girdwood dev_set_drvdata(&pdev->dev, priv); 472f9b95980Sapatard@mandriva.com 473f9b95980Sapatard@mandriva.com mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); 474b25b5aa0SThierry Reding priv->io = devm_ioremap_resource(&pdev->dev, mem); 475b25b5aa0SThierry Reding if (IS_ERR(priv->io)) 476b25b5aa0SThierry Reding return PTR_ERR(priv->io); 477f9b95980Sapatard@mandriva.com 478f9b95980Sapatard@mandriva.com priv->irq = platform_get_irq(pdev, 0); 479f9b95980Sapatard@mandriva.com if (priv->irq <= 0) { 480f9b95980Sapatard@mandriva.com dev_err(&pdev->dev, "platform_get_irq failed\n"); 481dbc517bfSRussell King return -ENXIO; 482f9b95980Sapatard@mandriva.com } 483f9b95980Sapatard@mandriva.com 484d4d9820bSAxel Lin if (!data) { 485f9b95980Sapatard@mandriva.com dev_err(&pdev->dev, "no platform data ?!\n"); 486dbc517bfSRussell King return -EINVAL; 487f9b95980Sapatard@mandriva.com } 488f9b95980Sapatard@mandriva.com 489f9b95980Sapatard@mandriva.com priv->burst = data->burst; 490f9b95980Sapatard@mandriva.com 491dbc517bfSRussell King priv->clk = devm_clk_get(&pdev->dev, NULL); 492e919c716SAndrew Lunn if (IS_ERR(priv->clk)) { 493e919c716SAndrew Lunn dev_err(&pdev->dev, "no clock\n"); 494dbc517bfSRussell King return PTR_ERR(priv->clk); 495e919c716SAndrew Lunn } 496dbc517bfSRussell King 497dbc517bfSRussell King err = clk_prepare_enable(priv->clk); 498dbc517bfSRussell King if (err < 0) 499dbc517bfSRussell King return err; 500e919c716SAndrew Lunn 501*4734dc96SMark Brown priv->extclk = devm_clk_get(&pdev->dev, "extclk"); 502d8d11ba5SRussell King if (!IS_ERR(priv->extclk)) { 503d8d11ba5SRussell King if (priv->extclk == priv->clk) { 504d8d11ba5SRussell King priv->extclk = ERR_PTR(-EINVAL); 505d8d11ba5SRussell King } else { 506d8d11ba5SRussell King dev_info(&pdev->dev, "found external clock\n"); 507d8d11ba5SRussell King clk_prepare_enable(priv->extclk); 508d8d11ba5SRussell King soc_dai = &kirkwood_i2s_dai_extclk; 509d8d11ba5SRussell King } 510d8d11ba5SRussell King } 511d8d11ba5SRussell King 512d8d11ba5SRussell King /* Some sensible defaults - this reflects the powerup values */ 513d8d11ba5SRussell King priv->ctl_play = KIRKWOOD_PLAYCTL_SIZE_24; 514d8d11ba5SRussell King priv->ctl_rec = KIRKWOOD_RECCTL_SIZE_24; 515d8d11ba5SRussell King 516d8d11ba5SRussell King /* Select the burst size */ 517d8d11ba5SRussell King if (data->burst == 32) { 518d8d11ba5SRussell King priv->ctl_play |= KIRKWOOD_PLAYCTL_BURST_32; 519d8d11ba5SRussell King priv->ctl_rec |= KIRKWOOD_RECCTL_BURST_32; 520d8d11ba5SRussell King } else { 521d8d11ba5SRussell King priv->ctl_play |= KIRKWOOD_PLAYCTL_BURST_128; 522d8d11ba5SRussell King priv->ctl_rec |= KIRKWOOD_RECCTL_BURST_128; 523d8d11ba5SRussell King } 524d8d11ba5SRussell King 52583d85f53SKuninori Morimoto err = snd_soc_register_component(&pdev->dev, &kirkwood_i2s_component, 52683d85f53SKuninori Morimoto soc_dai, 1); 527baffab28SSimon Baatz if (!err) 528baffab28SSimon Baatz return 0; 52983d85f53SKuninori Morimoto dev_err(&pdev->dev, "snd_soc_register_component failed\n"); 530baffab28SSimon Baatz 531*4734dc96SMark Brown if (!IS_ERR(priv->extclk)) 532363589bfSRussell King clk_disable_unprepare(priv->extclk); 533baffab28SSimon Baatz clk_disable_unprepare(priv->clk); 534f9b95980Sapatard@mandriva.com 535f9b95980Sapatard@mandriva.com return err; 536f9b95980Sapatard@mandriva.com } 537f9b95980Sapatard@mandriva.com 53834e15fbdSBill Pemberton static int kirkwood_i2s_dev_remove(struct platform_device *pdev) 539f9b95980Sapatard@mandriva.com { 540f0fba2adSLiam Girdwood struct kirkwood_dma_data *priv = dev_get_drvdata(&pdev->dev); 541f0fba2adSLiam Girdwood 54283d85f53SKuninori Morimoto snd_soc_unregister_component(&pdev->dev); 543e919c716SAndrew Lunn 544*4734dc96SMark Brown if (!IS_ERR(priv->extclk)) 545363589bfSRussell King clk_disable_unprepare(priv->extclk); 546e919c716SAndrew Lunn clk_disable_unprepare(priv->clk); 547f0fba2adSLiam Girdwood 548f9b95980Sapatard@mandriva.com return 0; 549f9b95980Sapatard@mandriva.com } 550f9b95980Sapatard@mandriva.com 551f9b95980Sapatard@mandriva.com static struct platform_driver kirkwood_i2s_driver = { 552f9b95980Sapatard@mandriva.com .probe = kirkwood_i2s_dev_probe, 55334e15fbdSBill Pemberton .remove = kirkwood_i2s_dev_remove, 554f9b95980Sapatard@mandriva.com .driver = { 555f9b95980Sapatard@mandriva.com .name = DRV_NAME, 556f9b95980Sapatard@mandriva.com .owner = THIS_MODULE, 557f9b95980Sapatard@mandriva.com }, 558f9b95980Sapatard@mandriva.com }; 559f9b95980Sapatard@mandriva.com 56041b10225SAxel Lin module_platform_driver(kirkwood_i2s_driver); 561f9b95980Sapatard@mandriva.com 562f9b95980Sapatard@mandriva.com /* Module information */ 56369737897SArnaud Patard (Rtp) MODULE_AUTHOR("Arnaud Patard, <arnaud.patard@rtp-net.org>"); 564f9b95980Sapatard@mandriva.com MODULE_DESCRIPTION("Kirkwood I2S SoC Interface"); 565f9b95980Sapatard@mandriva.com MODULE_LICENSE("GPL"); 566f9b95980Sapatard@mandriva.com MODULE_ALIAS("platform:kirkwood-i2s"); 567