| /* |
| * 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 <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/platform_device.h> |
| #include <sound/core.h> |
| #include <sound/pcm.h> |
| #include <sound/pcm_params.h> |
| #include <sound/soc.h> |
| #include <sound/soc-dapm.h> |
| #include <sound/tlv.h> |
| #include <sound/initval.h> |
| #include <asm/div64.h> |
| |
| #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 |
| |
| /* |
| * 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; |
| } |
| |
| /* |
| * write to the WM8580 register space |
| */ |
| static int wm8580_write(struct snd_soc_codec *codec, unsigned int reg, |
| unsigned int value) |
| { |
| u8 data[2]; |
| |
| 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; |
| } |
| |
| /* data is |
| * D15..D9 WM8580 register offset |
| * D8...D0 register data |
| */ |
| data[0] = (reg << 1) | ((value >> 8) & 0x0001); |
| data[1] = value & 0x00ff; |
| |
| wm8580_write_reg_cache(codec, reg, value); |
| if (codec->hw_write(codec->control_data, data, 2) == 2) |
| return 0; |
| else |
| return -EIO; |
| } |
| |
| 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 snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| int reg = kcontrol->private_value & 0xff; |
| int reg2 = (kcontrol->private_value >> 24) & 0xff; |
| 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, shift, max, invert, 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 = (reg_left) | ((shift) << 8) | \ |
| ((max) << 12) | ((invert) << 20) | ((reg_right) << 24) } |
| |
| 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 &= ~0x3f; |
| reg |= pll_div.prescale | pll_div.postscale << 1 | |
| pll_div.freqmode << 4; |
| |
| 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_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_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; |
| |
| 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; |
| |
| /* 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 the i2c layer weren't so broken, we could pass this kind of data |
| around */ |
| static struct snd_soc_device *wm8580_socdev; |
| |
| #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
| |
| /* |
| * WM8580 2 wire address is determined by GPIO5 |
| * state during powerup. |
| * low = 0x1a |
| * high = 0x1b |
| */ |
| |
| static int wm8580_i2c_probe(struct i2c_client *i2c, |
| const struct i2c_device_id *id) |
| { |
| struct snd_soc_device *socdev = wm8580_socdev; |
| struct snd_soc_codec *codec = socdev->codec; |
| int ret; |
| |
| i2c_set_clientdata(i2c, codec); |
| codec->control_data = i2c; |
| |
| ret = wm8580_init(socdev); |
| if (ret < 0) |
| dev_err(&i2c->dev, "failed to initialise WM8580\n"); |
| return ret; |
| } |
| |
| static int wm8580_i2c_remove(struct i2c_client *client) |
| { |
| struct snd_soc_codec *codec = i2c_get_clientdata(client); |
| kfree(codec->reg_cache); |
| return 0; |
| } |
| |
| static const struct i2c_device_id wm8580_i2c_id[] = { |
| { "wm8580", 0 }, |
| { } |
| }; |
| MODULE_DEVICE_TABLE(i2c, wm8580_i2c_id); |
| |
| static struct i2c_driver wm8580_i2c_driver = { |
| .driver = { |
| .name = "WM8580 I2C Codec", |
| .owner = THIS_MODULE, |
| }, |
| .probe = wm8580_i2c_probe, |
| .remove = wm8580_i2c_remove, |
| .id_table = wm8580_i2c_id, |
| }; |
| |
| static int wm8580_add_i2c_device(struct platform_device *pdev, |
| const struct wm8580_setup_data *setup) |
| { |
| struct i2c_board_info info; |
| struct i2c_adapter *adapter; |
| struct i2c_client *client; |
| int ret; |
| |
| ret = i2c_add_driver(&wm8580_i2c_driver); |
| if (ret != 0) { |
| dev_err(&pdev->dev, "can't add i2c driver\n"); |
| return ret; |
| } |
| |
| memset(&info, 0, sizeof(struct i2c_board_info)); |
| info.addr = setup->i2c_address; |
| strlcpy(info.type, "wm8580", I2C_NAME_SIZE); |
| |
| adapter = i2c_get_adapter(setup->i2c_bus); |
| if (!adapter) { |
| dev_err(&pdev->dev, "can't get i2c adapter %d\n", |
| setup->i2c_bus); |
| goto err_driver; |
| } |
| |
| client = i2c_new_device(adapter, &info); |
| i2c_put_adapter(adapter); |
| if (!client) { |
| dev_err(&pdev->dev, "can't add i2c device at 0x%x\n", |
| (unsigned int)info.addr); |
| goto err_driver; |
| } |
| |
| return 0; |
| |
| err_driver: |
| i2c_del_driver(&wm8580_i2c_driver); |
| return -ENODEV; |
| } |
| #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) { |
| codec->hw_write = (hw_write_t)i2c_master_send; |
| ret = wm8580_add_i2c_device(pdev, setup); |
| } |
| #else |
| /* 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; |
| |
| if (codec->control_data) |
| wm8580_set_bias_level(codec, SND_SOC_BIAS_OFF); |
| snd_soc_free_pcms(socdev); |
| snd_soc_dapm_free(socdev); |
| #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
| i2c_unregister_device(codec->control_data); |
| i2c_del_driver(&wm8580_i2c_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 <broonie@opensource.wolfsonmicro.com>"); |
| MODULE_LICENSE("GPL"); |