--- /dev/null
+/*
+ * 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/version.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 AUDIO_NAME "wm8580"
+#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 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
+
+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");
+ }
+#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_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");
projects / mirror_ubuntu-disco-kernel.git / commitdiff