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Diffstat (limited to '')
| -rw-r--r-- | sound/soc/codecs/wm8580.c | 1066 |
1 files changed, 1066 insertions, 0 deletions
diff --git a/sound/soc/codecs/wm8580.c b/sound/soc/codecs/wm8580.c new file mode 100644 index 000000000..fa4ad1b09 --- /dev/null +++ b/sound/soc/codecs/wm8580.c @@ -0,0 +1,1066 @@ +/* + * wm8580.c -- WM8580 and WM8581 ALSA Soc Audio driver + * + * Copyright 2008-12 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. + * + * The WM8581 is a multichannel codec with S/PDIF support, featuring eight + * DAC channels and two ADC channels. + * + * Currently only the primary audio interface is supported - S/PDIF and + * the secondary audio interfaces are not. + */ + +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/delay.h> +#include <linux/pm.h> +#include <linux/i2c.h> +#include <linux/regmap.h> +#include <linux/regulator/consumer.h> +#include <linux/slab.h> +#include <linux/of_device.h> + +#include <sound/core.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <sound/soc.h> +#include <sound/tlv.h> +#include <sound/initval.h> +#include <asm/div64.h> + +#include "wm8580.h" + +/* 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 WM8581_DIGITAL_ATTENUATION_DACL4 0x1A +#define WM8581_DIGITAL_ATTENUATION_DACR4 0x1B +#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 + +#define WM8580_MAX_REGISTER 0x35 + +#define WM8580_DACOSR 0x40 + +/* 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_BCLKSEL_MASK 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 + +/* + * 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 struct reg_default wm8580_reg_defaults[] = { + { 0, 0x0121 }, + { 1, 0x017e }, + { 2, 0x007d }, + { 3, 0x0014 }, + { 4, 0x0121 }, + { 5, 0x017e }, + { 6, 0x007d }, + { 7, 0x0194 }, + { 8, 0x0010 }, + { 9, 0x0002 }, + { 10, 0x0002 }, + { 11, 0x00c2 }, + { 12, 0x0182 }, + { 13, 0x0082 }, + { 14, 0x000a }, + { 15, 0x0024 }, + { 16, 0x0009 }, + { 17, 0x0000 }, + { 18, 0x00ff }, + { 19, 0x0000 }, + { 20, 0x00ff }, + { 21, 0x00ff }, + { 22, 0x00ff }, + { 23, 0x00ff }, + { 24, 0x00ff }, + { 25, 0x00ff }, + { 26, 0x00ff }, + { 27, 0x00ff }, + { 28, 0x01f0 }, + { 29, 0x0040 }, + { 30, 0x0000 }, + { 31, 0x0000 }, + { 32, 0x0000 }, + { 33, 0x0000 }, + { 34, 0x0031 }, + { 35, 0x000b }, + { 36, 0x0039 }, + { 37, 0x0000 }, + { 38, 0x0010 }, + { 39, 0x0032 }, + { 40, 0x0054 }, + { 41, 0x0076 }, + { 42, 0x0098 }, + { 43, 0x0000 }, + { 44, 0x0000 }, + { 45, 0x0000 }, + { 46, 0x0000 }, + { 47, 0x0000 }, + { 48, 0x0000 }, + { 49, 0x0000 }, + { 50, 0x005e }, + { 51, 0x003e }, + { 52, 0x0000 }, +}; + +static bool wm8580_volatile(struct device *dev, unsigned int reg) +{ + switch (reg) { + case WM8580_RESET: + return true; + default: + return false; + } +} + +struct pll_state { + unsigned int in; + unsigned int out; +}; + +#define WM8580_NUM_SUPPLIES 3 +static const char *wm8580_supply_names[WM8580_NUM_SUPPLIES] = { + "AVDD", + "DVDD", + "PVDD", +}; + +struct wm8580_driver_data { + int num_dacs; +}; + +/* codec private data */ +struct wm8580_priv { + struct regmap *regmap; + struct regulator_bulk_data supplies[WM8580_NUM_SUPPLIES]; + struct pll_state a; + struct pll_state b; + const struct wm8580_driver_data *drvdata; + int sysclk[2]; +}; + +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_component *component = snd_soc_kcontrol_component(kcontrol); + struct wm8580_priv *wm8580 = snd_soc_component_get_drvdata(component); + unsigned int reg = mc->reg; + unsigned int reg2 = mc->rreg; + int ret; + + /* Clear the register cache VU so we write without VU set */ + regcache_cache_only(wm8580->regmap, true); + regmap_update_bits(wm8580->regmap, reg, 0x100, 0x000); + regmap_update_bits(wm8580->regmap, reg2, 0x100, 0x000); + regcache_cache_only(wm8580->regmap, false); + + ret = snd_soc_put_volsw(kcontrol, ucontrol); + if (ret < 0) + return ret; + + /* Now write again with the volume update bit set */ + snd_soc_component_update_bits(component, reg, 0x100, 0x100); + snd_soc_component_update_bits(component, reg2, 0x100, 0x100); + + return 0; +} + +static const struct snd_kcontrol_new wm8580_snd_controls[] = { +SOC_DOUBLE_R_EXT_TLV("DAC1 Playback Volume", + WM8580_DIGITAL_ATTENUATION_DACL1, + WM8580_DIGITAL_ATTENUATION_DACR1, + 0, 0xff, 0, snd_soc_get_volsw, wm8580_out_vu, dac_tlv), +SOC_DOUBLE_R_EXT_TLV("DAC2 Playback Volume", + WM8580_DIGITAL_ATTENUATION_DACL2, + WM8580_DIGITAL_ATTENUATION_DACR2, + 0, 0xff, 0, snd_soc_get_volsw, wm8580_out_vu, dac_tlv), +SOC_DOUBLE_R_EXT_TLV("DAC3 Playback Volume", + WM8580_DIGITAL_ATTENUATION_DACL3, + WM8580_DIGITAL_ATTENUATION_DACR3, + 0, 0xff, 0, snd_soc_get_volsw, wm8580_out_vu, 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, 1), +SOC_SINGLE("DAC2 Switch", WM8580_DAC_CONTROL5, 1, 1, 1), +SOC_SINGLE("DAC3 Switch", WM8580_DAC_CONTROL5, 2, 1, 1), + +SOC_DOUBLE("Capture Switch", WM8580_ADC_CONTROL1, 0, 1, 1, 1), +SOC_SINGLE("Capture High-Pass Filter Switch", WM8580_ADC_CONTROL1, 4, 1, 0), +}; + +static const struct snd_kcontrol_new wm8581_snd_controls[] = { +SOC_DOUBLE_R_EXT_TLV("DAC4 Playback Volume", + WM8581_DIGITAL_ATTENUATION_DACL4, + WM8581_DIGITAL_ATTENUATION_DACR4, + 0, 0xff, 0, snd_soc_get_volsw, wm8580_out_vu, dac_tlv), + +SOC_SINGLE("DAC4 Deemphasis Switch", WM8580_DAC_CONTROL3, 3, 1, 0), + +SOC_DOUBLE("DAC4 Invert Switch", WM8580_DAC_CONTROL4, 8, 7, 1, 0), + +SOC_SINGLE("DAC4 Switch", WM8580_DAC_CONTROL5, 3, 1, 1), +}; + +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_widget wm8581_dapm_widgets[] = { +SND_SOC_DAPM_DAC("DAC4", "Playback", WM8580_PWRDN1, 5, 1), + +SND_SOC_DAPM_OUTPUT("VOUT4L"), +SND_SOC_DAPM_OUTPUT("VOUT4R"), +}; + +static const struct snd_soc_dapm_route wm8580_dapm_routes[] = { + { "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 const struct snd_soc_dapm_route wm8581_dapm_routes[] = { + { "VOUT4L", NULL, "DAC4" }, + { "VOUT4R", NULL, "DAC4" }, +}; + +/* 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 %uHz->%uHz\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=%u 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, + int source, unsigned int freq_in, unsigned int freq_out) +{ + int offset; + struct snd_soc_component *component = codec_dai->component; + struct wm8580_priv *wm8580 = snd_soc_component_get_drvdata(component); + 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. + */ + snd_soc_component_update_bits(component, WM8580_PWRDN2, pwr_mask, pwr_mask); + + if (!freq_in || !freq_out) + return 0; + + snd_soc_component_write(component, WM8580_PLLA1 + offset, pll_div.k & 0x1ff); + snd_soc_component_write(component, WM8580_PLLA2 + offset, (pll_div.k >> 9) & 0x1ff); + snd_soc_component_write(component, WM8580_PLLA3 + offset, + (pll_div.k >> 18 & 0xf) | (pll_div.n << 4)); + + reg = snd_soc_component_read32(component, WM8580_PLLA4 + offset); + reg &= ~0x1b; + reg |= pll_div.prescale | pll_div.postscale << 1 | + pll_div.freqmode << 3; + + snd_soc_component_write(component, WM8580_PLLA4 + offset, reg); + + /* All done, turn it on */ + snd_soc_component_update_bits(component, WM8580_PWRDN2, pwr_mask, 0); + + return 0; +} + +static const int wm8580_sysclk_ratios[] = { + 128, 192, 256, 384, 512, 768, 1152, +}; + +/* + * 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_dai *dai) +{ + struct snd_soc_component *component = dai->component; + struct wm8580_priv *wm8580 = snd_soc_component_get_drvdata(component); + u16 paifa = 0; + u16 paifb = 0; + int i, ratio, osr; + + /* bit size */ + switch (params_width(params)) { + case 16: + paifa |= 0x8; + break; + case 20: + paifa |= 0x0; + paifb |= WM8580_AIF_LENGTH_20; + break; + case 24: + paifa |= 0x0; + paifb |= WM8580_AIF_LENGTH_24; + break; + case 32: + paifa |= 0x0; + paifb |= WM8580_AIF_LENGTH_32; + break; + default: + return -EINVAL; + } + + /* Look up the SYSCLK ratio; accept only exact matches */ + ratio = wm8580->sysclk[dai->driver->id] / params_rate(params); + for (i = 0; i < ARRAY_SIZE(wm8580_sysclk_ratios); i++) + if (ratio == wm8580_sysclk_ratios[i]) + break; + if (i == ARRAY_SIZE(wm8580_sysclk_ratios)) { + dev_err(component->dev, "Invalid clock ratio %d/%d\n", + wm8580->sysclk[dai->driver->id], params_rate(params)); + return -EINVAL; + } + paifa |= i; + dev_dbg(component->dev, "Running at %dfs with %dHz clock\n", + wm8580_sysclk_ratios[i], wm8580->sysclk[dai->driver->id]); + + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { + switch (ratio) { + case 128: + case 192: + osr = WM8580_DACOSR; + dev_dbg(component->dev, "Selecting 64x OSR\n"); + break; + default: + osr = 0; + dev_dbg(component->dev, "Selecting 128x OSR\n"); + break; + } + + snd_soc_component_update_bits(component, WM8580_PAIF3, WM8580_DACOSR, osr); + } + + snd_soc_component_update_bits(component, WM8580_PAIF1 + dai->driver->id, + WM8580_AIF_RATE_MASK | WM8580_AIF_BCLKSEL_MASK, + paifa); + snd_soc_component_update_bits(component, WM8580_PAIF3 + dai->driver->id, + WM8580_AIF_LENGTH_MASK, paifb); + return 0; +} + +static int wm8580_set_paif_dai_fmt(struct snd_soc_dai *codec_dai, + unsigned int fmt) +{ + struct snd_soc_component *component = codec_dai->component; + unsigned int aifa; + unsigned int aifb; + int can_invert_lrclk; + + aifa = snd_soc_component_read32(component, WM8580_PAIF1 + codec_dai->driver->id); + aifb = snd_soc_component_read32(component, WM8580_PAIF3 + codec_dai->driver->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; + } + + snd_soc_component_write(component, WM8580_PAIF1 + codec_dai->driver->id, aifa); + snd_soc_component_write(component, WM8580_PAIF3 + codec_dai->driver->id, aifb); + + return 0; +} + +static int wm8580_set_dai_clkdiv(struct snd_soc_dai *codec_dai, + int div_id, int div) +{ + struct snd_soc_component *component = codec_dai->component; + unsigned int reg; + + switch (div_id) { + case WM8580_MCLK: + reg = snd_soc_component_read32(component, 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; + } + snd_soc_component_write(component, WM8580_PLLB4, reg); + break; + + case WM8580_CLKOUTSRC: + reg = snd_soc_component_read32(component, 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; + } + snd_soc_component_write(component, WM8580_PLLB4, reg); + break; + + default: + return -EINVAL; + } + + return 0; +} + +static int wm8580_set_sysclk(struct snd_soc_dai *dai, int clk_id, + unsigned int freq, int dir) +{ + struct snd_soc_component *component = dai->component; + struct wm8580_priv *wm8580 = snd_soc_component_get_drvdata(component); + int ret, sel, sel_mask, sel_shift; + + switch (dai->driver->id) { + case WM8580_DAI_PAIFRX: + sel_mask = 0x3; + sel_shift = 0; + break; + + case WM8580_DAI_PAIFTX: + sel_mask = 0xc; + sel_shift = 2; + break; + + default: + WARN(1, "Unknown DAI driver ID\n"); + return -EINVAL; + } + + switch (clk_id) { + case WM8580_CLKSRC_ADCMCLK: + if (dai->driver->id != WM8580_DAI_PAIFTX) + return -EINVAL; + sel = 0 << sel_shift; + break; + case WM8580_CLKSRC_PLLA: + sel = 1 << sel_shift; + break; + case WM8580_CLKSRC_PLLB: + sel = 2 << sel_shift; + break; + case WM8580_CLKSRC_MCLK: + sel = 3 << sel_shift; + break; + default: + dev_err(component->dev, "Unknown clock %d\n", clk_id); + return -EINVAL; + } + + /* We really should validate PLL settings but not yet */ + wm8580->sysclk[dai->driver->id] = freq; + + ret = snd_soc_component_update_bits(component, WM8580_CLKSEL, sel_mask, sel); + if (ret < 0) + return ret; + + return 0; +} + +static int wm8580_digital_mute(struct snd_soc_dai *codec_dai, int mute) +{ + struct snd_soc_component *component = codec_dai->component; + unsigned int reg; + + reg = snd_soc_component_read32(component, WM8580_DAC_CONTROL5); + + if (mute) + reg |= WM8580_DAC_CONTROL5_MUTEALL; + else + reg &= ~WM8580_DAC_CONTROL5_MUTEALL; + + snd_soc_component_write(component, WM8580_DAC_CONTROL5, reg); + + return 0; +} + +static int wm8580_set_bias_level(struct snd_soc_component *component, + enum snd_soc_bias_level level) +{ + switch (level) { + case SND_SOC_BIAS_ON: + case SND_SOC_BIAS_PREPARE: + break; + + case SND_SOC_BIAS_STANDBY: + if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) { + /* Power up and get individual control of the DACs */ + snd_soc_component_update_bits(component, WM8580_PWRDN1, + WM8580_PWRDN1_PWDN | + WM8580_PWRDN1_ALLDACPD, 0); + + /* Make VMID high impedance */ + snd_soc_component_update_bits(component, WM8580_ADC_CONTROL1, + 0x100, 0); + } + break; + + case SND_SOC_BIAS_OFF: + snd_soc_component_update_bits(component, WM8580_PWRDN1, + WM8580_PWRDN1_PWDN, WM8580_PWRDN1_PWDN); + break; + } + return 0; +} + +static int wm8580_playback_startup(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct snd_soc_component *component = dai->component; + struct wm8580_priv *wm8580 = snd_soc_component_get_drvdata(component); + + return snd_pcm_hw_constraint_minmax(substream->runtime, + SNDRV_PCM_HW_PARAM_CHANNELS, 1, wm8580->drvdata->num_dacs * 2); +} + +#define WM8580_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ + SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) + +static const struct snd_soc_dai_ops wm8580_dai_ops_playback = { + .startup = wm8580_playback_startup, + .set_sysclk = wm8580_set_sysclk, + .hw_params = wm8580_paif_hw_params, + .set_fmt = wm8580_set_paif_dai_fmt, + .set_clkdiv = wm8580_set_dai_clkdiv, + .set_pll = wm8580_set_dai_pll, + .digital_mute = wm8580_digital_mute, +}; + +static const struct snd_soc_dai_ops wm8580_dai_ops_capture = { + .set_sysclk = wm8580_set_sysclk, + .hw_params = wm8580_paif_hw_params, + .set_fmt = wm8580_set_paif_dai_fmt, + .set_clkdiv = wm8580_set_dai_clkdiv, + .set_pll = wm8580_set_dai_pll, +}; + +static struct snd_soc_dai_driver wm8580_dai[] = { + { + .name = "wm8580-hifi-playback", + .id = WM8580_DAI_PAIFRX, + .playback = { + .stream_name = "Playback", + .channels_min = 1, + .rates = SNDRV_PCM_RATE_8000_192000, + .formats = WM8580_FORMATS, + }, + .ops = &wm8580_dai_ops_playback, + }, + { + .name = "wm8580-hifi-capture", + .id = WM8580_DAI_PAIFTX, + .capture = { + .stream_name = "Capture", + .channels_min = 2, + .channels_max = 2, + .rates = SNDRV_PCM_RATE_8000_192000, + .formats = WM8580_FORMATS, + }, + .ops = &wm8580_dai_ops_capture, + }, +}; + +static int wm8580_probe(struct snd_soc_component *component) +{ + struct wm8580_priv *wm8580 = snd_soc_component_get_drvdata(component); + struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component); + int ret = 0; + + switch (wm8580->drvdata->num_dacs) { + case 4: + snd_soc_add_component_controls(component, wm8581_snd_controls, + ARRAY_SIZE(wm8581_snd_controls)); + snd_soc_dapm_new_controls(dapm, wm8581_dapm_widgets, + ARRAY_SIZE(wm8581_dapm_widgets)); + snd_soc_dapm_add_routes(dapm, wm8581_dapm_routes, + ARRAY_SIZE(wm8581_dapm_routes)); + break; + default: + break; + } + + ret = regulator_bulk_enable(ARRAY_SIZE(wm8580->supplies), + wm8580->supplies); + if (ret != 0) { + dev_err(component->dev, "Failed to enable supplies: %d\n", ret); + goto err_regulator_get; + } + + /* Get the codec into a known state */ + ret = snd_soc_component_write(component, WM8580_RESET, 0); + if (ret != 0) { + dev_err(component->dev, "Failed to reset component: %d\n", ret); + goto err_regulator_enable; + } + + return 0; + +err_regulator_enable: + regulator_bulk_disable(ARRAY_SIZE(wm8580->supplies), wm8580->supplies); +err_regulator_get: + return ret; +} + +/* power down chip */ +static void wm8580_remove(struct snd_soc_component *component) +{ + struct wm8580_priv *wm8580 = snd_soc_component_get_drvdata(component); + + regulator_bulk_disable(ARRAY_SIZE(wm8580->supplies), wm8580->supplies); +} + +static const struct snd_soc_component_driver soc_component_dev_wm8580 = { + .probe = wm8580_probe, + .remove = wm8580_remove, + .set_bias_level = wm8580_set_bias_level, + .controls = wm8580_snd_controls, + .num_controls = ARRAY_SIZE(wm8580_snd_controls), + .dapm_widgets = wm8580_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(wm8580_dapm_widgets), + .dapm_routes = wm8580_dapm_routes, + .num_dapm_routes = ARRAY_SIZE(wm8580_dapm_routes), + .idle_bias_on = 1, + .use_pmdown_time = 1, + .endianness = 1, + .non_legacy_dai_naming = 1, +}; + +static const struct regmap_config wm8580_regmap = { + .reg_bits = 7, + .val_bits = 9, + .max_register = WM8580_MAX_REGISTER, + + .reg_defaults = wm8580_reg_defaults, + .num_reg_defaults = ARRAY_SIZE(wm8580_reg_defaults), + .cache_type = REGCACHE_RBTREE, + + .volatile_reg = wm8580_volatile, +}; + +static const struct wm8580_driver_data wm8580_data = { + .num_dacs = 3, +}; + +static const struct wm8580_driver_data wm8581_data = { + .num_dacs = 4, +}; + +static const struct of_device_id wm8580_of_match[] = { + { .compatible = "wlf,wm8580", .data = &wm8580_data }, + { .compatible = "wlf,wm8581", .data = &wm8581_data }, + { }, +}; +MODULE_DEVICE_TABLE(of, wm8580_of_match); + +static int wm8580_i2c_probe(struct i2c_client *i2c, + const struct i2c_device_id *id) +{ + const struct of_device_id *of_id; + struct wm8580_priv *wm8580; + int ret, i; + + wm8580 = devm_kzalloc(&i2c->dev, sizeof(struct wm8580_priv), + GFP_KERNEL); + if (wm8580 == NULL) + return -ENOMEM; + + wm8580->regmap = devm_regmap_init_i2c(i2c, &wm8580_regmap); + if (IS_ERR(wm8580->regmap)) + return PTR_ERR(wm8580->regmap); + + for (i = 0; i < ARRAY_SIZE(wm8580->supplies); i++) + wm8580->supplies[i].supply = wm8580_supply_names[i]; + + ret = devm_regulator_bulk_get(&i2c->dev, ARRAY_SIZE(wm8580->supplies), + wm8580->supplies); + if (ret != 0) { + dev_err(&i2c->dev, "Failed to request supplies: %d\n", ret); + return ret; + } + + i2c_set_clientdata(i2c, wm8580); + + of_id = of_match_device(wm8580_of_match, &i2c->dev); + if (of_id) + wm8580->drvdata = of_id->data; + + if (!wm8580->drvdata) { + dev_err(&i2c->dev, "failed to find driver data\n"); + return -EINVAL; + } + + ret = devm_snd_soc_register_component(&i2c->dev, + &soc_component_dev_wm8580, wm8580_dai, ARRAY_SIZE(wm8580_dai)); + + return ret; +} + +static const struct i2c_device_id wm8580_i2c_id[] = { + { "wm8580", (kernel_ulong_t)&wm8580_data }, + { "wm8581", (kernel_ulong_t)&wm8581_data }, + { } +}; +MODULE_DEVICE_TABLE(i2c, wm8580_i2c_id); + +static struct i2c_driver wm8580_i2c_driver = { + .driver = { + .name = "wm8580", + .of_match_table = wm8580_of_match, + }, + .probe = wm8580_i2c_probe, + .id_table = wm8580_i2c_id, +}; + +module_i2c_driver(wm8580_i2c_driver); + +MODULE_DESCRIPTION("ASoC WM8580 driver"); +MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); +MODULE_AUTHOR("Matt Flax <flatmax@flatmax.org>"); +MODULE_LICENSE("GPL"); |