/* * wm8580.c -- WM8580 ALSA Soc Audio driver * * Copyright 2008 Wolfson Microelectronics PLC. * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. * * Notes: * The WM8580 is a multichannel codec with S/PDIF support, featuring six * DAC channels and two ADC channels. * * Currently only the primary audio interface is supported - S/PDIF and * the secondary audio interfaces are not. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "wm8580.h" #define WM8580_VERSION "0.1" struct pll_state { unsigned int in; unsigned int out; }; /* codec private data */ struct wm8580_priv { struct pll_state a; struct pll_state b; }; /* WM8580 register space */ #define WM8580_PLLA1 0x00 #define WM8580_PLLA2 0x01 #define WM8580_PLLA3 0x02 #define WM8580_PLLA4 0x03 #define WM8580_PLLB1 0x04 #define WM8580_PLLB2 0x05 #define WM8580_PLLB3 0x06 #define WM8580_PLLB4 0x07 #define WM8580_CLKSEL 0x08 #define WM8580_PAIF1 0x09 #define WM8580_PAIF2 0x0A #define WM8580_SAIF1 0x0B #define WM8580_PAIF3 0x0C #define WM8580_PAIF4 0x0D #define WM8580_SAIF2 0x0E #define WM8580_DAC_CONTROL1 0x0F #define WM8580_DAC_CONTROL2 0x10 #define WM8580_DAC_CONTROL3 0x11 #define WM8580_DAC_CONTROL4 0x12 #define WM8580_DAC_CONTROL5 0x13 #define WM8580_DIGITAL_ATTENUATION_DACL1 0x14 #define WM8580_DIGITAL_ATTENUATION_DACR1 0x15 #define WM8580_DIGITAL_ATTENUATION_DACL2 0x16 #define WM8580_DIGITAL_ATTENUATION_DACR2 0x17 #define WM8580_DIGITAL_ATTENUATION_DACL3 0x18 #define WM8580_DIGITAL_ATTENUATION_DACR3 0x19 #define WM8580_MASTER_DIGITAL_ATTENUATION 0x1C #define WM8580_ADC_CONTROL1 0x1D #define WM8580_SPDTXCHAN0 0x1E #define WM8580_SPDTXCHAN1 0x1F #define WM8580_SPDTXCHAN2 0x20 #define WM8580_SPDTXCHAN3 0x21 #define WM8580_SPDTXCHAN4 0x22 #define WM8580_SPDTXCHAN5 0x23 #define WM8580_SPDMODE 0x24 #define WM8580_INTMASK 0x25 #define WM8580_GPO1 0x26 #define WM8580_GPO2 0x27 #define WM8580_GPO3 0x28 #define WM8580_GPO4 0x29 #define WM8580_GPO5 0x2A #define WM8580_INTSTAT 0x2B #define WM8580_SPDRXCHAN1 0x2C #define WM8580_SPDRXCHAN2 0x2D #define WM8580_SPDRXCHAN3 0x2E #define WM8580_SPDRXCHAN4 0x2F #define WM8580_SPDRXCHAN5 0x30 #define WM8580_SPDSTAT 0x31 #define WM8580_PWRDN1 0x32 #define WM8580_PWRDN2 0x33 #define WM8580_READBACK 0x34 #define WM8580_RESET 0x35 /* PLLB4 (register 7h) */ #define WM8580_PLLB4_MCLKOUTSRC_MASK 0x60 #define WM8580_PLLB4_MCLKOUTSRC_PLLA 0x20 #define WM8580_PLLB4_MCLKOUTSRC_PLLB 0x40 #define WM8580_PLLB4_MCLKOUTSRC_OSC 0x60 #define WM8580_PLLB4_CLKOUTSRC_MASK 0x180 #define WM8580_PLLB4_CLKOUTSRC_PLLACLK 0x080 #define WM8580_PLLB4_CLKOUTSRC_PLLBCLK 0x100 #define WM8580_PLLB4_CLKOUTSRC_OSCCLK 0x180 /* CLKSEL (register 8h) */ #define WM8580_CLKSEL_DAC_CLKSEL_MASK 0x03 #define WM8580_CLKSEL_DAC_CLKSEL_PLLA 0x01 #define WM8580_CLKSEL_DAC_CLKSEL_PLLB 0x02 /* AIF control 1 (registers 9h-bh) */ #define WM8580_AIF_RATE_MASK 0x7 #define WM8580_AIF_RATE_128 0x0 #define WM8580_AIF_RATE_192 0x1 #define WM8580_AIF_RATE_256 0x2 #define WM8580_AIF_RATE_384 0x3 #define WM8580_AIF_RATE_512 0x4 #define WM8580_AIF_RATE_768 0x5 #define WM8580_AIF_RATE_1152 0x6 #define WM8580_AIF_BCLKSEL_MASK 0x18 #define WM8580_AIF_BCLKSEL_64 0x00 #define WM8580_AIF_BCLKSEL_128 0x08 #define WM8580_AIF_BCLKSEL_256 0x10 #define WM8580_AIF_BCLKSEL_SYSCLK 0x18 #define WM8580_AIF_MS 0x20 #define WM8580_AIF_CLKSRC_MASK 0xc0 #define WM8580_AIF_CLKSRC_PLLA 0x40 #define WM8580_AIF_CLKSRC_PLLB 0x40 #define WM8580_AIF_CLKSRC_MCLK 0xc0 /* AIF control 2 (registers ch-eh) */ #define WM8580_AIF_FMT_MASK 0x03 #define WM8580_AIF_FMT_RIGHTJ 0x00 #define WM8580_AIF_FMT_LEFTJ 0x01 #define WM8580_AIF_FMT_I2S 0x02 #define WM8580_AIF_FMT_DSP 0x03 #define WM8580_AIF_LENGTH_MASK 0x0c #define WM8580_AIF_LENGTH_16 0x00 #define WM8580_AIF_LENGTH_20 0x04 #define WM8580_AIF_LENGTH_24 0x08 #define WM8580_AIF_LENGTH_32 0x0c #define WM8580_AIF_LRP 0x10 #define WM8580_AIF_BCP 0x20 /* Powerdown Register 1 (register 32h) */ #define WM8580_PWRDN1_PWDN 0x001 #define WM8580_PWRDN1_ALLDACPD 0x040 /* Powerdown Register 2 (register 33h) */ #define WM8580_PWRDN2_OSSCPD 0x001 #define WM8580_PWRDN2_PLLAPD 0x002 #define WM8580_PWRDN2_PLLBPD 0x004 #define WM8580_PWRDN2_SPDIFPD 0x008 #define WM8580_PWRDN2_SPDIFTXD 0x010 #define WM8580_PWRDN2_SPDIFRXD 0x020 #define WM8580_DAC_CONTROL5_MUTEALL 0x10 #define WM8580_REG_DATA_LENGTH 9 /* * wm8580 register cache * We can't read the WM8580 register space when we * are using 2 wire for device control, so we cache them instead. */ static const u16 wm8580_reg[] = { 0x0121, 0x017e, 0x007d, 0x0014, /*R3*/ 0x0121, 0x017e, 0x007d, 0x0194, /*R7*/ 0x001c, 0x0002, 0x0002, 0x00c2, /*R11*/ 0x0182, 0x0082, 0x000a, 0x0024, /*R15*/ 0x0009, 0x0000, 0x00ff, 0x0000, /*R19*/ 0x00ff, 0x00ff, 0x00ff, 0x00ff, /*R23*/ 0x00ff, 0x00ff, 0x00ff, 0x00ff, /*R27*/ 0x01f0, 0x0040, 0x0000, 0x0000, /*R31(0x1F)*/ 0x0000, 0x0000, 0x0031, 0x000b, /*R35*/ 0x0039, 0x0000, 0x0010, 0x0032, /*R39*/ 0x0054, 0x0076, 0x0098, 0x0000, /*R43(0x2B)*/ 0x0000, 0x0000, 0x0000, 0x0000, /*R47*/ 0x0000, 0x0000, 0x005e, 0x003e, /*R51(0x33)*/ 0x0000, 0x0000 /*R53*/ }; /* * read wm8580 register cache */ static inline unsigned int wm8580_read_reg_cache(struct snd_soc_codec *codec, unsigned int reg) { u16 *cache = codec->reg_cache; BUG_ON(reg > ARRAY_SIZE(wm8580_reg)); return cache[reg]; } /* * write wm8580 register cache */ static inline void wm8580_write_reg_cache(struct snd_soc_codec *codec, unsigned int reg, unsigned int value) { u16 *cache = codec->reg_cache; cache[reg] = value; } static struct snd_soc_device *wm8580_socdev; /* * write to the WM8580 register space */ static int wm8580_write(struct snd_soc_codec *codec, unsigned int reg, unsigned int value) { struct snd_soc_device *socdev = wm8580_socdev; struct wm8580_setup_data *setup = socdev->codec_data; u8 data[2]; int ret = 0; BUG_ON(reg > ARRAY_SIZE(wm8580_reg)); /* Registers are 9 bits wide */ value &= 0x1ff; switch (reg) { case WM8580_RESET: /* Uncached */ break; default: if (value == wm8580_read_reg_cache(codec, reg)) return 0; } wm8580_write_reg_cache(codec, reg, value); if (setup->spi) { data[1] = (reg << 1) | ((value >> 8) & 0x0001); data[0] = value & 0x00ff; ret = codec->hw_write(codec->control_data, data, 1); } else if (setup->i2c_address) { data[0] = (reg << 1) | ((value >> 8) & 0x0001); data[1] = value & 0x00ff; ret = codec->hw_write(codec->control_data, data, 2); } else ret = -EIO; return ret; } static inline unsigned int wm8580_read(struct snd_soc_codec *codec, unsigned int reg) { switch (reg) { default: return wm8580_read_reg_cache(codec, reg); } } static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1); static int wm8580_out_vu(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct soc_mixer_control *mc = (struct soc_mixer_control *)kcontrol->private_value; struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); unsigned int reg = mc->reg; unsigned int reg2 = mc->rreg; int ret; u16 val; /* Clear the register cache so we write without VU set */ wm8580_write_reg_cache(codec, reg, 0); wm8580_write_reg_cache(codec, reg2, 0); ret = snd_soc_put_volsw_2r(kcontrol, ucontrol); if (ret < 0) return ret; /* Now write again with the volume update bit set */ val = wm8580_read_reg_cache(codec, reg); wm8580_write(codec, reg, val | 0x0100); val = wm8580_read_reg_cache(codec, reg2); wm8580_write(codec, reg2, val | 0x0100); return 0; } #define SOC_WM8580_OUT_DOUBLE_R_TLV(xname, reg_left, reg_right, xshift, xmax, xinvert, tlv_array) \ { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \ .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\ SNDRV_CTL_ELEM_ACCESS_READWRITE, \ .tlv.p = (tlv_array), \ .info = snd_soc_info_volsw_2r, \ .get = snd_soc_get_volsw_2r, .put = wm8580_out_vu, \ .private_value = (unsigned long)&(struct soc_mixer_control) \ {.reg = reg_left, .rreg = reg_right, .shift = xshift, \ .max = xmax, .invert = xinvert}, } static const struct snd_kcontrol_new wm8580_snd_controls[] = { SOC_WM8580_OUT_DOUBLE_R_TLV("DAC1 Playback Volume", WM8580_DIGITAL_ATTENUATION_DACL1, WM8580_DIGITAL_ATTENUATION_DACR1, 0, 0xff, 0, dac_tlv), SOC_WM8580_OUT_DOUBLE_R_TLV("DAC2 Playback Volume", WM8580_DIGITAL_ATTENUATION_DACL2, WM8580_DIGITAL_ATTENUATION_DACR2, 0, 0xff, 0, dac_tlv), SOC_WM8580_OUT_DOUBLE_R_TLV("DAC3 Playback Volume", WM8580_DIGITAL_ATTENUATION_DACL3, WM8580_DIGITAL_ATTENUATION_DACR3, 0, 0xff, 0, dac_tlv), SOC_SINGLE("DAC1 Deemphasis Switch", WM8580_DAC_CONTROL3, 0, 1, 0), SOC_SINGLE("DAC2 Deemphasis Switch", WM8580_DAC_CONTROL3, 1, 1, 0), SOC_SINGLE("DAC3 Deemphasis Switch", WM8580_DAC_CONTROL3, 2, 1, 0), SOC_DOUBLE("DAC1 Invert Switch", WM8580_DAC_CONTROL4, 0, 1, 1, 0), SOC_DOUBLE("DAC2 Invert Switch", WM8580_DAC_CONTROL4, 2, 3, 1, 0), SOC_DOUBLE("DAC3 Invert Switch", WM8580_DAC_CONTROL4, 4, 5, 1, 0), SOC_SINGLE("DAC ZC Switch", WM8580_DAC_CONTROL5, 5, 1, 0), SOC_SINGLE("DAC1 Switch", WM8580_DAC_CONTROL5, 0, 1, 0), SOC_SINGLE("DAC2 Switch", WM8580_DAC_CONTROL5, 1, 1, 0), SOC_SINGLE("DAC3 Switch", WM8580_DAC_CONTROL5, 2, 1, 0), SOC_DOUBLE("ADC Mute Switch", WM8580_ADC_CONTROL1, 0, 1, 1, 0), SOC_SINGLE("ADC High-Pass Filter Switch", WM8580_ADC_CONTROL1, 4, 1, 0), }; /* Add non-DAPM controls */ static int wm8580_add_controls(struct snd_soc_codec *codec) { int err, i; for (i = 0; i < ARRAY_SIZE(wm8580_snd_controls); i++) { err = snd_ctl_add(codec->card, snd_soc_cnew(&wm8580_snd_controls[i], codec, NULL)); if (err < 0) return err; } return 0; } static const struct snd_soc_dapm_widget wm8580_dapm_widgets[] = { SND_SOC_DAPM_DAC("DAC1", "Playback", WM8580_PWRDN1, 2, 1), SND_SOC_DAPM_DAC("DAC2", "Playback", WM8580_PWRDN1, 3, 1), SND_SOC_DAPM_DAC("DAC3", "Playback", WM8580_PWRDN1, 4, 1), SND_SOC_DAPM_OUTPUT("VOUT1L"), SND_SOC_DAPM_OUTPUT("VOUT1R"), SND_SOC_DAPM_OUTPUT("VOUT2L"), SND_SOC_DAPM_OUTPUT("VOUT2R"), SND_SOC_DAPM_OUTPUT("VOUT3L"), SND_SOC_DAPM_OUTPUT("VOUT3R"), SND_SOC_DAPM_ADC("ADC", "Capture", WM8580_PWRDN1, 1, 1), SND_SOC_DAPM_INPUT("AINL"), SND_SOC_DAPM_INPUT("AINR"), }; static const struct snd_soc_dapm_route audio_map[] = { { "VOUT1L", NULL, "DAC1" }, { "VOUT1R", NULL, "DAC1" }, { "VOUT2L", NULL, "DAC2" }, { "VOUT2R", NULL, "DAC2" }, { "VOUT3L", NULL, "DAC3" }, { "VOUT3R", NULL, "DAC3" }, { "ADC", NULL, "AINL" }, { "ADC", NULL, "AINR" }, }; static int wm8580_add_widgets(struct snd_soc_codec *codec) { snd_soc_dapm_new_controls(codec, wm8580_dapm_widgets, ARRAY_SIZE(wm8580_dapm_widgets)); snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); snd_soc_dapm_new_widgets(codec); return 0; } /* PLL divisors */ struct _pll_div { u32 prescale:1; u32 postscale:1; u32 freqmode:2; u32 n:4; u32 k:24; }; /* The size in bits of the pll divide */ #define FIXED_PLL_SIZE (1 << 22) /* PLL rate to output rate divisions */ static struct { unsigned int div; unsigned int freqmode; unsigned int postscale; } post_table[] = { { 2, 0, 0 }, { 4, 0, 1 }, { 4, 1, 0 }, { 8, 1, 1 }, { 8, 2, 0 }, { 16, 2, 1 }, { 12, 3, 0 }, { 24, 3, 1 } }; static int pll_factors(struct _pll_div *pll_div, unsigned int target, unsigned int source) { u64 Kpart; unsigned int K, Ndiv, Nmod; int i; pr_debug("wm8580: PLL %dHz->%dHz\n", source, target); /* Scale the output frequency up; the PLL should run in the * region of 90-100MHz. */ for (i = 0; i < ARRAY_SIZE(post_table); i++) { if (target * post_table[i].div >= 90000000 && target * post_table[i].div <= 100000000) { pll_div->freqmode = post_table[i].freqmode; pll_div->postscale = post_table[i].postscale; target *= post_table[i].div; break; } } if (i == ARRAY_SIZE(post_table)) { printk(KERN_ERR "wm8580: Unable to scale output frequency " "%u\n", target); return -EINVAL; } Ndiv = target / source; if (Ndiv < 5) { source /= 2; pll_div->prescale = 1; Ndiv = target / source; } else pll_div->prescale = 0; if ((Ndiv < 5) || (Ndiv > 13)) { printk(KERN_ERR "WM8580 N=%d outside supported range\n", Ndiv); return -EINVAL; } pll_div->n = Ndiv; Nmod = target % source; Kpart = FIXED_PLL_SIZE * (long long)Nmod; do_div(Kpart, source); K = Kpart & 0xFFFFFFFF; pll_div->k = K; pr_debug("PLL %x.%x prescale %d freqmode %d postscale %d\n", pll_div->n, pll_div->k, pll_div->prescale, pll_div->freqmode, pll_div->postscale); return 0; } static int wm8580_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id, unsigned int freq_in, unsigned int freq_out) { int offset; struct snd_soc_codec *codec = codec_dai->codec; struct wm8580_priv *wm8580 = codec->private_data; struct pll_state *state; struct _pll_div pll_div; unsigned int reg; unsigned int pwr_mask; int ret; /* GCC isn't able to work out the ifs below for initialising/using * pll_div so suppress warnings. */ memset(&pll_div, 0, sizeof(pll_div)); switch (pll_id) { case WM8580_PLLA: state = &wm8580->a; offset = 0; pwr_mask = WM8580_PWRDN2_PLLAPD; break; case WM8580_PLLB: state = &wm8580->b; offset = 4; pwr_mask = WM8580_PWRDN2_PLLBPD; break; default: return -ENODEV; } if (freq_in && freq_out) { ret = pll_factors(&pll_div, freq_out, freq_in); if (ret != 0) return ret; } state->in = freq_in; state->out = freq_out; /* Always disable the PLL - it is not safe to leave it running * while reprogramming it. */ reg = wm8580_read(codec, WM8580_PWRDN2); wm8580_write(codec, WM8580_PWRDN2, reg | pwr_mask); if (!freq_in || !freq_out) return 0; wm8580_write(codec, WM8580_PLLA1 + offset, pll_div.k & 0x1ff); wm8580_write(codec, WM8580_PLLA2 + offset, (pll_div.k >> 9) & 0xff); wm8580_write(codec, WM8580_PLLA3 + offset, (pll_div.k >> 18 & 0xf) | (pll_div.n << 4)); reg = wm8580_read(codec, WM8580_PLLA4 + offset); reg &= ~0x3b; reg |= pll_div.prescale | pll_div.postscale << 1 | pll_div.freqmode << 3; wm8580_write(codec, WM8580_PLLA4 + offset, reg); /* All done, turn it on */ reg = wm8580_read(codec, WM8580_PWRDN2); wm8580_write(codec, WM8580_PWRDN2, reg & ~pwr_mask); return 0; } /* * Set PCM DAI bit size and sample rate. */ static int wm8580_paif_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_dai_link *dai = rtd->dai; struct snd_soc_device *socdev = rtd->socdev; struct snd_soc_codec *codec = socdev->codec; u16 paifb = wm8580_read(codec, WM8580_PAIF3 + dai->codec_dai->id); paifb &= ~WM8580_AIF_LENGTH_MASK; /* bit size */ switch (params_format(params)) { case SNDRV_PCM_FORMAT_S16_LE: break; case SNDRV_PCM_FORMAT_S20_3LE: paifb |= WM8580_AIF_LENGTH_20; break; case SNDRV_PCM_FORMAT_S24_LE: paifb |= WM8580_AIF_LENGTH_24; break; case SNDRV_PCM_FORMAT_S32_LE: paifb |= WM8580_AIF_LENGTH_24; break; default: return -EINVAL; } wm8580_write(codec, WM8580_PAIF3 + dai->codec_dai->id, paifb); return 0; } static int wm8580_set_paif_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt) { struct snd_soc_codec *codec = codec_dai->codec; unsigned int aifa; unsigned int aifb; int can_invert_lrclk; aifa = wm8580_read(codec, WM8580_PAIF1 + codec_dai->id); aifb = wm8580_read(codec, WM8580_PAIF3 + codec_dai->id); aifb &= ~(WM8580_AIF_FMT_MASK | WM8580_AIF_LRP | WM8580_AIF_BCP); switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { case SND_SOC_DAIFMT_CBS_CFS: aifa &= ~WM8580_AIF_MS; break; case SND_SOC_DAIFMT_CBM_CFM: aifa |= WM8580_AIF_MS; break; default: return -EINVAL; } switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { case SND_SOC_DAIFMT_I2S: can_invert_lrclk = 1; aifb |= WM8580_AIF_FMT_I2S; break; case SND_SOC_DAIFMT_RIGHT_J: can_invert_lrclk = 1; aifb |= WM8580_AIF_FMT_RIGHTJ; break; case SND_SOC_DAIFMT_LEFT_J: can_invert_lrclk = 1; aifb |= WM8580_AIF_FMT_LEFTJ; break; case SND_SOC_DAIFMT_DSP_A: can_invert_lrclk = 0; aifb |= WM8580_AIF_FMT_DSP; break; case SND_SOC_DAIFMT_DSP_B: can_invert_lrclk = 0; aifb |= WM8580_AIF_FMT_DSP; aifb |= WM8580_AIF_LRP; break; default: return -EINVAL; } switch (fmt & SND_SOC_DAIFMT_INV_MASK) { case SND_SOC_DAIFMT_NB_NF: break; case SND_SOC_DAIFMT_IB_IF: if (!can_invert_lrclk) return -EINVAL; aifb |= WM8580_AIF_BCP; aifb |= WM8580_AIF_LRP; break; case SND_SOC_DAIFMT_IB_NF: aifb |= WM8580_AIF_BCP; break; case SND_SOC_DAIFMT_NB_IF: if (!can_invert_lrclk) return -EINVAL; aifb |= WM8580_AIF_LRP; break; default: return -EINVAL; } wm8580_write(codec, WM8580_PAIF1 + codec_dai->id, aifa); wm8580_write(codec, WM8580_PAIF3 + codec_dai->id, aifb); return 0; } static int wm8580_set_dai_clkdiv(struct snd_soc_dai *codec_dai, int div_id, int div) { struct snd_soc_codec *codec = codec_dai->codec; unsigned int reg; switch (div_id) { case WM8580_MCLK: reg = wm8580_read(codec, WM8580_PLLB4); reg &= ~WM8580_PLLB4_MCLKOUTSRC_MASK; switch (div) { case WM8580_CLKSRC_MCLK: /* Input */ break; case WM8580_CLKSRC_PLLA: reg |= WM8580_PLLB4_MCLKOUTSRC_PLLA; break; case WM8580_CLKSRC_PLLB: reg |= WM8580_PLLB4_MCLKOUTSRC_PLLB; break; case WM8580_CLKSRC_OSC: reg |= WM8580_PLLB4_MCLKOUTSRC_OSC; break; default: return -EINVAL; } wm8580_write(codec, WM8580_PLLB4, reg); break; case WM8580_DAC_CLKSEL: reg = wm8580_read(codec, WM8580_CLKSEL); reg &= ~WM8580_CLKSEL_DAC_CLKSEL_MASK; switch (div) { case WM8580_CLKSRC_MCLK: break; case WM8580_CLKSRC_PLLA: reg |= WM8580_CLKSEL_DAC_CLKSEL_PLLA; break; case WM8580_CLKSRC_PLLB: reg |= WM8580_CLKSEL_DAC_CLKSEL_PLLB; break; default: return -EINVAL; } wm8580_write(codec, WM8580_CLKSEL, reg); break; case WM8580_CLKOUTSRC: reg = wm8580_read(codec, WM8580_PLLB4); reg &= ~WM8580_PLLB4_CLKOUTSRC_MASK; switch (div) { case WM8580_CLKSRC_NONE: break; case WM8580_CLKSRC_PLLA: reg |= WM8580_PLLB4_CLKOUTSRC_PLLACLK; break; case WM8580_CLKSRC_PLLB: reg |= WM8580_PLLB4_CLKOUTSRC_PLLBCLK; break; case WM8580_CLKSRC_OSC: reg |= WM8580_PLLB4_CLKOUTSRC_OSCCLK; break; default: return -EINVAL; } wm8580_write(codec, WM8580_PLLB4, reg); break; default: return -EINVAL; } return 0; } static int wm8580_set_paif_dai_sysclk(struct snd_soc_dai *codec_dai, int clk_id, unsigned int freq, int dir) { struct snd_soc_codec *codec = codec_dai->codec; unsigned int reg; switch (clk_id) { case WM8580_BCLK_CLKDIV: reg = wm8580_read(codec, WM8580_PAIF1) & ~WM8580_AIF_BCLKSEL_MASK; wm8580_write(codec, WM8580_PAIF1, reg | freq); reg = wm8580_read(codec, WM8580_PAIF2) & ~WM8580_AIF_BCLKSEL_MASK; wm8580_write(codec, WM8580_PAIF2, reg | freq); break; case WM8580_LRCLK_CLKDIV: reg = wm8580_read(codec, WM8580_PAIF1) & ~0x07; wm8580_write(codec, WM8580_PAIF1, reg | freq); break; default: return -EINVAL; } return 0; } static int wm8580_digital_mute(struct snd_soc_dai *codec_dai, int mute) { struct snd_soc_codec *codec = codec_dai->codec; unsigned int reg; reg = wm8580_read(codec, WM8580_DAC_CONTROL5); if (mute) reg |= WM8580_DAC_CONTROL5_MUTEALL; else reg &= ~WM8580_DAC_CONTROL5_MUTEALL; wm8580_write(codec, WM8580_DAC_CONTROL5, reg); return 0; } static int wm8580_set_bias_level(struct snd_soc_codec *codec, enum snd_soc_bias_level level) { u16 reg; switch (level) { case SND_SOC_BIAS_ON: case SND_SOC_BIAS_PREPARE: case SND_SOC_BIAS_STANDBY: break; case SND_SOC_BIAS_OFF: reg = wm8580_read(codec, WM8580_PWRDN1); wm8580_write(codec, WM8580_PWRDN1, reg | WM8580_PWRDN1_PWDN); break; } codec->bias_level = level; return 0; } #define WM8580_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) struct snd_soc_dai wm8580_dai[] = { { .name = "WM8580 PAIFRX", .id = 0, .playback = { .stream_name = "Playback", .channels_min = 1, .channels_max = 6, .rates = SNDRV_PCM_RATE_8000_192000, .formats = WM8580_FORMATS, }, .ops = { .hw_params = wm8580_paif_hw_params, }, .dai_ops = { .set_fmt = wm8580_set_paif_dai_fmt, .set_sysclk = wm8580_set_paif_dai_sysclk, .set_clkdiv = wm8580_set_dai_clkdiv, .set_pll = wm8580_set_dai_pll, .digital_mute = wm8580_digital_mute, }, }, { .name = "WM8580 PAIFTX", .id = 1, .capture = { .stream_name = "Capture", .channels_min = 2, .channels_max = 2, .rates = SNDRV_PCM_RATE_8000_192000, .formats = WM8580_FORMATS, }, .ops = { .hw_params = wm8580_paif_hw_params, }, .dai_ops = { .set_fmt = wm8580_set_paif_dai_fmt, .set_clkdiv = wm8580_set_dai_clkdiv, .set_pll = wm8580_set_dai_pll, }, }, }; EXPORT_SYMBOL_GPL(wm8580_dai); /* * initialise the WM8580 driver * register the mixer and dsp interfaces with the kernel */ static int wm8580_init(struct snd_soc_device *socdev) { struct snd_soc_codec *codec = socdev->codec; int ret = 0; u16 data; codec->name = "WM8580"; codec->owner = THIS_MODULE; codec->read = wm8580_read_reg_cache; codec->write = wm8580_write; codec->set_bias_level = wm8580_set_bias_level; codec->dai = wm8580_dai; codec->num_dai = ARRAY_SIZE(wm8580_dai); codec->reg_cache_size = ARRAY_SIZE(wm8580_reg); codec->reg_cache = kmemdup(wm8580_reg, sizeof(wm8580_reg), GFP_KERNEL); if (codec->reg_cache == NULL) return -ENOMEM; wm8580_write(codec, WM8580_READBACK, 0x10); data = 2 << WM8580_REG_DATA_LENGTH; codec->hw_read(codec->control_data, (char *)&data, 1); pr_info("wm8580device rev:%d\n", data & 0xff); /* Get the codec into a known state */ wm8580_write(codec, WM8580_RESET, 0); /* Power up and get individual control of the DACs */ wm8580_write(codec, WM8580_PWRDN1, wm8580_read(codec, WM8580_PWRDN1) & ~(WM8580_PWRDN1_PWDN | WM8580_PWRDN1_ALLDACPD)); /* Make VMID high impedence */ wm8580_write(codec, WM8580_ADC_CONTROL1, wm8580_read(codec, WM8580_ADC_CONTROL1) & ~0x100); /* register pcms */ ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); if (ret < 0) { printk(KERN_ERR "wm8580: failed to create pcms\n"); goto pcm_err; } wm8580_add_controls(codec); wm8580_add_widgets(codec); ret = snd_soc_register_card(socdev); if (ret < 0) { printk(KERN_ERR "wm8580: failed to register card\n"); goto card_err; } return ret; card_err: snd_soc_free_pcms(socdev); snd_soc_dapm_free(socdev); pcm_err: kfree(codec->reg_cache); return ret; } #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) /* * WM8580 2 wire address is determined by GPIO5 * state during powerup. * low = 0x1a * high = 0x1b */ static unsigned short normal_i2c[] = { 0, I2C_CLIENT_END }; /* Magic definition of all other variables and things */ I2C_CLIENT_INSMOD; static struct i2c_driver wm8580_i2c_driver; static struct i2c_client client_template; static int wm8580_codec_probe(struct i2c_adapter *adap, int addr, int kind) { struct snd_soc_device *socdev = wm8580_socdev; struct wm8580_setup_data *setup = socdev->codec_data; struct snd_soc_codec *codec = socdev->codec; struct i2c_client *i2c; int ret; if (addr != setup->i2c_address) return -ENODEV; client_template.adapter = adap; client_template.addr = addr; i2c = kmemdup(&client_template, sizeof(client_template), GFP_KERNEL); if (i2c == NULL) { kfree(codec); return -ENOMEM; } i2c_set_clientdata(i2c, codec); codec->control_data = i2c; ret = i2c_attach_client(i2c); if (ret < 0) { dev_err(&i2c->dev, "failed to attach codec at addr %x\n", addr); goto err; } ret = wm8580_init(socdev); if (ret < 0) { dev_err(&i2c->dev, "failed to initialise WM8580\n"); goto err; } return ret; err: kfree(codec); kfree(i2c); return ret; } static int wm8580_i2c_detach(struct i2c_client *client) { struct snd_soc_codec *codec = i2c_get_clientdata(client); i2c_detach_client(client); kfree(codec->reg_cache); kfree(client); return 0; } static int wm8580_i2c_attach(struct i2c_adapter *adap) { return i2c_probe(adap, &addr_data, wm8580_codec_probe); } /* corgi i2c codec control layer */ static struct i2c_driver wm8580_i2c_driver = { .driver = { .name = "WM8580 I2C Codec", .owner = THIS_MODULE, }, .attach_adapter = wm8580_i2c_attach, .detach_client = wm8580_i2c_detach, .command = NULL, }; static struct i2c_client client_template = { .name = "WM8580", .driver = &wm8580_i2c_driver, }; #endif #if defined(CONFIG_SPI) || defined(CONFIG_SPI_MODULE) /*! * This function is called to transfer data to WM8580 on SPI. * * @param spi the SPI slave device(WM8580) * @param buf the pointer to the data buffer * @param len the length of the data to be transferred * * @return Returns 0 on success -1 on failure. */ static inline int spi_rw(void *control_data, char *data, int length) { struct spi_transfer t = { .tx_buf = (const void *)data, .rx_buf = (void *)data, .len = length, .cs_change = 0, .delay_usecs = 0, }; struct spi_message m; spi_message_init(&m); spi_message_add_tail(&t, &m); return spi_sync((struct spi_device *)control_data, &m); } /*! * This function is called whenever the SPI slave device is detected. * * @param spi the SPI slave device * * @return Returns 0 on SUCCESS and error on FAILURE. */ static int __devinit wm8580_spi_probe(struct spi_device *spi) { int ret; struct snd_soc_device *socdev = wm8580_socdev; struct snd_soc_codec *codec = socdev->codec; spi->bits_per_word = 16; spi->mode = SPI_MODE_2; spi_setup(spi); codec->control_data = spi; ret = wm8580_init(socdev); if (ret < 0) pr_err("Failed to initialise WM8580\n"); return ret; } static int __devinit wm8580_spi_remove(struct spi_device *spi) { return 0; } static struct spi_driver wm8580_spi_driver = { .driver = { .name = "wm8580_spi", .bus = &spi_bus_type, .owner = THIS_MODULE, }, .probe = wm8580_spi_probe, .remove = __devexit_p(wm8580_spi_remove), }; #endif static int wm8580_probe(struct platform_device *pdev) { struct snd_soc_device *socdev = platform_get_drvdata(pdev); struct wm8580_setup_data *setup; struct snd_soc_codec *codec; struct wm8580_priv *wm8580; int ret = 0; pr_info("WM8580 Audio Codec %s\n", WM8580_VERSION); setup = socdev->codec_data; codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); if (codec == NULL) return -ENOMEM; wm8580 = kzalloc(sizeof(struct wm8580_priv), GFP_KERNEL); if (wm8580 == NULL) { kfree(codec); return -ENOMEM; } codec->private_data = wm8580; socdev->codec = codec; mutex_init(&codec->mutex); INIT_LIST_HEAD(&codec->dapm_widgets); INIT_LIST_HEAD(&codec->dapm_paths); wm8580_socdev = socdev; #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) if (setup->i2c_address) { normal_i2c[0] = setup->i2c_address; codec->hw_write = (hw_write_t)i2c_master_send; ret = i2c_add_driver(&wm8580_i2c_driver); if (ret != 0) printk(KERN_ERR "can't add i2c driver"); } #endif #if defined(CONFIG_SPI) || defined(CONFIG_SPI_MODULE) if (setup->spi) { codec->hw_write = (hw_write_t) spi_rw; codec->hw_read = (hw_read_t) spi_rw; spi_register_driver(&wm8580_spi_driver); } /* Add other interfaces here */ #endif return ret; } /* power down chip */ static int wm8580_remove(struct platform_device *pdev) { struct snd_soc_device *socdev = platform_get_drvdata(pdev); struct snd_soc_codec *codec = socdev->codec; struct wm8580_setup_data *setup; if (codec->control_data) wm8580_set_bias_level(codec, SND_SOC_BIAS_OFF); snd_soc_free_pcms(socdev); snd_soc_dapm_free(socdev); setup = socdev->codec_data; #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) if (setup->i2c_address) i2c_del_driver(&wm8580_i2c_driver); #endif #if defined(CONFIG_SPI) || defined(CONFIG_SPI_MODULE) if (setup->spi) spi_unregister_driver(&wm8580_spi_driver); #endif kfree(codec->private_data); kfree(codec); return 0; } struct snd_soc_codec_device soc_codec_dev_wm8580 = { .probe = wm8580_probe, .remove = wm8580_remove, }; EXPORT_SYMBOL_GPL(soc_codec_dev_wm8580); MODULE_DESCRIPTION("ASoC WM8580 driver"); MODULE_AUTHOR("Mark Brown "); MODULE_LICENSE("GPL");