891 lines
20 KiB
C
891 lines
20 KiB
C
/*
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* wm2000.c -- WM2000 ALSA Soc Audio driver
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*
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* Copyright 2008-2010 Wolfson Microelectronics PLC.
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*
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* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* The download image for the WM2000 will be requested as
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* 'wm2000_anc.bin' by default (overridable via platform data) at
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* runtime and is expected to be in flat binary format. This is
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* generated by Wolfson configuration tools and includes
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* system-specific callibration information. If supplied as a
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* sequence of ASCII-encoded hexidecimal bytes this can be converted
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* into a flat binary with a command such as this on the command line:
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*
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* perl -e 'while (<>) { s/[\r\n]+// ; printf("%c", hex($_)); }'
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* < file > wm2000_anc.bin
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/firmware.h>
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#include <linux/delay.h>
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#include <linux/pm.h>
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#include <linux/i2c.h>
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#include <linux/platform_device.h>
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#include <linux/debugfs.h>
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#include <linux/slab.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include <sound/initval.h>
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#include <sound/tlv.h>
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#include <sound/wm2000.h>
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#include "wm2000.h"
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enum wm2000_anc_mode {
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ANC_ACTIVE = 0,
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ANC_BYPASS = 1,
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ANC_STANDBY = 2,
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ANC_OFF = 3,
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};
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struct wm2000_priv {
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struct i2c_client *i2c;
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enum wm2000_anc_mode anc_mode;
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unsigned int anc_active:1;
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unsigned int anc_eng_ena:1;
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unsigned int spk_ena:1;
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unsigned int mclk_div:1;
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unsigned int speech_clarity:1;
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int anc_download_size;
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char *anc_download;
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};
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static struct i2c_client *wm2000_i2c;
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static int wm2000_write(struct i2c_client *i2c, unsigned int reg,
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unsigned int value)
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{
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u8 data[3];
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int ret;
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data[0] = (reg >> 8) & 0xff;
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data[1] = reg & 0xff;
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data[2] = value & 0xff;
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dev_vdbg(&i2c->dev, "write %x = %x\n", reg, value);
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ret = i2c_master_send(i2c, data, 3);
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if (ret == 3)
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return 0;
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if (ret < 0)
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return ret;
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else
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return -EIO;
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}
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static unsigned int wm2000_read(struct i2c_client *i2c, unsigned int r)
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{
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struct i2c_msg xfer[2];
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u8 reg[2];
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u8 data;
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int ret;
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/* Write register */
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reg[0] = (r >> 8) & 0xff;
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reg[1] = r & 0xff;
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xfer[0].addr = i2c->addr;
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xfer[0].flags = 0;
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xfer[0].len = sizeof(reg);
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xfer[0].buf = ®[0];
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/* Read data */
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xfer[1].addr = i2c->addr;
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xfer[1].flags = I2C_M_RD;
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xfer[1].len = 1;
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xfer[1].buf = &data;
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ret = i2c_transfer(i2c->adapter, xfer, 2);
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if (ret != 2) {
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dev_err(&i2c->dev, "i2c_transfer() returned %d\n", ret);
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return 0;
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}
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dev_vdbg(&i2c->dev, "read %x from %x\n", data, r);
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return data;
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}
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static void wm2000_reset(struct wm2000_priv *wm2000)
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{
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struct i2c_client *i2c = wm2000->i2c;
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wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_ENG_CLR);
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wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_RAM_CLR);
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wm2000_write(i2c, WM2000_REG_ID1, 0);
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wm2000->anc_mode = ANC_OFF;
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}
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static int wm2000_poll_bit(struct i2c_client *i2c,
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unsigned int reg, u8 mask, int timeout)
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{
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int val;
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val = wm2000_read(i2c, reg);
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while (!(val & mask) && --timeout) {
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msleep(1);
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val = wm2000_read(i2c, reg);
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}
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if (timeout == 0)
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return 0;
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else
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return 1;
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}
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static int wm2000_power_up(struct i2c_client *i2c, int analogue)
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{
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struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev);
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int ret, timeout;
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BUG_ON(wm2000->anc_mode != ANC_OFF);
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dev_dbg(&i2c->dev, "Beginning power up\n");
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if (!wm2000->mclk_div) {
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dev_dbg(&i2c->dev, "Disabling MCLK divider\n");
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wm2000_write(i2c, WM2000_REG_SYS_CTL2,
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WM2000_MCLK_DIV2_ENA_CLR);
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} else {
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dev_dbg(&i2c->dev, "Enabling MCLK divider\n");
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wm2000_write(i2c, WM2000_REG_SYS_CTL2,
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WM2000_MCLK_DIV2_ENA_SET);
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}
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wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_ENG_CLR);
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wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_ENG_SET);
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/* Wait for ANC engine to become ready */
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if (!wm2000_poll_bit(i2c, WM2000_REG_ANC_STAT,
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WM2000_ANC_ENG_IDLE, 1)) {
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dev_err(&i2c->dev, "ANC engine failed to reset\n");
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return -ETIMEDOUT;
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}
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if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS,
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WM2000_STATUS_BOOT_COMPLETE, 1)) {
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dev_err(&i2c->dev, "ANC engine failed to initialise\n");
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return -ETIMEDOUT;
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}
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wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_RAM_SET);
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/* Open code download of the data since it is the only bulk
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* write we do. */
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dev_dbg(&i2c->dev, "Downloading %d bytes\n",
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wm2000->anc_download_size - 2);
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ret = i2c_master_send(i2c, wm2000->anc_download,
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wm2000->anc_download_size);
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if (ret < 0) {
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dev_err(&i2c->dev, "i2c_transfer() failed: %d\n", ret);
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return ret;
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}
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if (ret != wm2000->anc_download_size) {
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dev_err(&i2c->dev, "i2c_transfer() failed, %d != %d\n",
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ret, wm2000->anc_download_size);
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return -EIO;
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}
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dev_dbg(&i2c->dev, "Download complete\n");
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if (analogue) {
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timeout = 248;
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wm2000_write(i2c, WM2000_REG_ANA_VMID_PU_TIME, timeout / 4);
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wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
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WM2000_MODE_ANA_SEQ_INCLUDE |
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WM2000_MODE_MOUSE_ENABLE |
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WM2000_MODE_THERMAL_ENABLE);
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} else {
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timeout = 10;
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wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
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WM2000_MODE_MOUSE_ENABLE |
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WM2000_MODE_THERMAL_ENABLE);
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}
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ret = wm2000_read(i2c, WM2000_REG_SPEECH_CLARITY);
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if (wm2000->speech_clarity)
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ret &= ~WM2000_SPEECH_CLARITY;
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else
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ret |= WM2000_SPEECH_CLARITY;
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wm2000_write(i2c, WM2000_REG_SPEECH_CLARITY, ret);
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wm2000_write(i2c, WM2000_REG_SYS_START0, 0x33);
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wm2000_write(i2c, WM2000_REG_SYS_START1, 0x02);
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wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_INT_N_CLR);
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if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS,
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WM2000_STATUS_MOUSE_ACTIVE, timeout)) {
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dev_err(&i2c->dev, "Timed out waiting for device after %dms\n",
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timeout * 10);
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return -ETIMEDOUT;
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}
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dev_dbg(&i2c->dev, "ANC active\n");
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if (analogue)
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dev_dbg(&i2c->dev, "Analogue active\n");
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wm2000->anc_mode = ANC_ACTIVE;
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return 0;
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}
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static int wm2000_power_down(struct i2c_client *i2c, int analogue)
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{
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struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev);
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int timeout;
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if (analogue) {
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timeout = 248;
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wm2000_write(i2c, WM2000_REG_ANA_VMID_PD_TIME, timeout / 4);
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wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
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WM2000_MODE_ANA_SEQ_INCLUDE |
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WM2000_MODE_POWER_DOWN);
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} else {
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timeout = 10;
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wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
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WM2000_MODE_POWER_DOWN);
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}
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if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS,
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WM2000_STATUS_POWER_DOWN_COMPLETE, timeout)) {
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dev_err(&i2c->dev, "Timeout waiting for ANC power down\n");
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return -ETIMEDOUT;
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}
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if (!wm2000_poll_bit(i2c, WM2000_REG_ANC_STAT,
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WM2000_ANC_ENG_IDLE, 1)) {
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dev_err(&i2c->dev, "Timeout waiting for ANC engine idle\n");
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return -ETIMEDOUT;
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}
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dev_dbg(&i2c->dev, "powered off\n");
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wm2000->anc_mode = ANC_OFF;
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return 0;
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}
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static int wm2000_enter_bypass(struct i2c_client *i2c, int analogue)
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{
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struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev);
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BUG_ON(wm2000->anc_mode != ANC_ACTIVE);
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if (analogue) {
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wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
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WM2000_MODE_ANA_SEQ_INCLUDE |
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WM2000_MODE_THERMAL_ENABLE |
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WM2000_MODE_BYPASS_ENTRY);
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} else {
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wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
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WM2000_MODE_THERMAL_ENABLE |
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WM2000_MODE_BYPASS_ENTRY);
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}
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if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS,
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WM2000_STATUS_ANC_DISABLED, 10)) {
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dev_err(&i2c->dev, "Timeout waiting for ANC disable\n");
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return -ETIMEDOUT;
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}
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if (!wm2000_poll_bit(i2c, WM2000_REG_ANC_STAT,
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WM2000_ANC_ENG_IDLE, 1)) {
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dev_err(&i2c->dev, "Timeout waiting for ANC engine idle\n");
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return -ETIMEDOUT;
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}
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wm2000_write(i2c, WM2000_REG_SYS_CTL1, WM2000_SYS_STBY);
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wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_RAM_CLR);
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wm2000->anc_mode = ANC_BYPASS;
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dev_dbg(&i2c->dev, "bypass enabled\n");
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return 0;
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}
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static int wm2000_exit_bypass(struct i2c_client *i2c, int analogue)
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{
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struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev);
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BUG_ON(wm2000->anc_mode != ANC_BYPASS);
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wm2000_write(i2c, WM2000_REG_SYS_CTL1, 0);
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if (analogue) {
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wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
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WM2000_MODE_ANA_SEQ_INCLUDE |
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WM2000_MODE_MOUSE_ENABLE |
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WM2000_MODE_THERMAL_ENABLE);
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} else {
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wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
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WM2000_MODE_MOUSE_ENABLE |
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WM2000_MODE_THERMAL_ENABLE);
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}
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wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_RAM_SET);
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wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_INT_N_CLR);
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if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS,
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WM2000_STATUS_MOUSE_ACTIVE, 10)) {
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dev_err(&i2c->dev, "Timed out waiting for MOUSE\n");
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return -ETIMEDOUT;
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}
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wm2000->anc_mode = ANC_ACTIVE;
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dev_dbg(&i2c->dev, "MOUSE active\n");
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return 0;
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}
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static int wm2000_enter_standby(struct i2c_client *i2c, int analogue)
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{
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struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev);
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int timeout;
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BUG_ON(wm2000->anc_mode != ANC_ACTIVE);
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if (analogue) {
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timeout = 248;
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wm2000_write(i2c, WM2000_REG_ANA_VMID_PD_TIME, timeout / 4);
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wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
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WM2000_MODE_ANA_SEQ_INCLUDE |
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WM2000_MODE_THERMAL_ENABLE |
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WM2000_MODE_STANDBY_ENTRY);
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} else {
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timeout = 10;
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wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
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WM2000_MODE_THERMAL_ENABLE |
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WM2000_MODE_STANDBY_ENTRY);
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}
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if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS,
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WM2000_STATUS_ANC_DISABLED, timeout)) {
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dev_err(&i2c->dev,
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"Timed out waiting for ANC disable after 1ms\n");
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return -ETIMEDOUT;
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}
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if (!wm2000_poll_bit(i2c, WM2000_REG_ANC_STAT, WM2000_ANC_ENG_IDLE,
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1)) {
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dev_err(&i2c->dev,
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"Timed out waiting for standby after %dms\n",
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timeout * 10);
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return -ETIMEDOUT;
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}
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wm2000_write(i2c, WM2000_REG_SYS_CTL1, WM2000_SYS_STBY);
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wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_RAM_CLR);
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wm2000->anc_mode = ANC_STANDBY;
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dev_dbg(&i2c->dev, "standby\n");
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if (analogue)
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dev_dbg(&i2c->dev, "Analogue disabled\n");
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return 0;
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}
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static int wm2000_exit_standby(struct i2c_client *i2c, int analogue)
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{
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struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev);
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int timeout;
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BUG_ON(wm2000->anc_mode != ANC_STANDBY);
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wm2000_write(i2c, WM2000_REG_SYS_CTL1, 0);
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if (analogue) {
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timeout = 248;
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wm2000_write(i2c, WM2000_REG_ANA_VMID_PU_TIME, timeout / 4);
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wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
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WM2000_MODE_ANA_SEQ_INCLUDE |
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WM2000_MODE_THERMAL_ENABLE |
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WM2000_MODE_MOUSE_ENABLE);
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} else {
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timeout = 10;
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wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
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WM2000_MODE_THERMAL_ENABLE |
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WM2000_MODE_MOUSE_ENABLE);
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}
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wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_RAM_SET);
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wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_INT_N_CLR);
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if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS,
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WM2000_STATUS_MOUSE_ACTIVE, timeout)) {
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dev_err(&i2c->dev, "Timed out waiting for MOUSE after %dms\n",
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timeout * 10);
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return -ETIMEDOUT;
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}
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wm2000->anc_mode = ANC_ACTIVE;
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dev_dbg(&i2c->dev, "MOUSE active\n");
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if (analogue)
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dev_dbg(&i2c->dev, "Analogue enabled\n");
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return 0;
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}
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typedef int (*wm2000_mode_fn)(struct i2c_client *i2c, int analogue);
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static struct {
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enum wm2000_anc_mode source;
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enum wm2000_anc_mode dest;
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int analogue;
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wm2000_mode_fn step[2];
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} anc_transitions[] = {
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{
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.source = ANC_OFF,
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.dest = ANC_ACTIVE,
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.analogue = 1,
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.step = {
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wm2000_power_up,
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},
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},
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{
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.source = ANC_OFF,
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.dest = ANC_STANDBY,
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.step = {
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wm2000_power_up,
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wm2000_enter_standby,
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},
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},
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{
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.source = ANC_OFF,
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.dest = ANC_BYPASS,
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.analogue = 1,
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.step = {
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wm2000_power_up,
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wm2000_enter_bypass,
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},
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},
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{
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.source = ANC_ACTIVE,
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.dest = ANC_BYPASS,
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.analogue = 1,
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.step = {
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wm2000_enter_bypass,
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},
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},
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{
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.source = ANC_ACTIVE,
|
|
.dest = ANC_STANDBY,
|
|
.analogue = 1,
|
|
.step = {
|
|
wm2000_enter_standby,
|
|
},
|
|
},
|
|
{
|
|
.source = ANC_ACTIVE,
|
|
.dest = ANC_OFF,
|
|
.analogue = 1,
|
|
.step = {
|
|
wm2000_power_down,
|
|
},
|
|
},
|
|
{
|
|
.source = ANC_BYPASS,
|
|
.dest = ANC_ACTIVE,
|
|
.analogue = 1,
|
|
.step = {
|
|
wm2000_exit_bypass,
|
|
},
|
|
},
|
|
{
|
|
.source = ANC_BYPASS,
|
|
.dest = ANC_STANDBY,
|
|
.analogue = 1,
|
|
.step = {
|
|
wm2000_exit_bypass,
|
|
wm2000_enter_standby,
|
|
},
|
|
},
|
|
{
|
|
.source = ANC_BYPASS,
|
|
.dest = ANC_OFF,
|
|
.step = {
|
|
wm2000_exit_bypass,
|
|
wm2000_power_down,
|
|
},
|
|
},
|
|
{
|
|
.source = ANC_STANDBY,
|
|
.dest = ANC_ACTIVE,
|
|
.analogue = 1,
|
|
.step = {
|
|
wm2000_exit_standby,
|
|
},
|
|
},
|
|
{
|
|
.source = ANC_STANDBY,
|
|
.dest = ANC_BYPASS,
|
|
.analogue = 1,
|
|
.step = {
|
|
wm2000_exit_standby,
|
|
wm2000_enter_bypass,
|
|
},
|
|
},
|
|
{
|
|
.source = ANC_STANDBY,
|
|
.dest = ANC_OFF,
|
|
.step = {
|
|
wm2000_exit_standby,
|
|
wm2000_power_down,
|
|
},
|
|
},
|
|
};
|
|
|
|
static int wm2000_anc_transition(struct wm2000_priv *wm2000,
|
|
enum wm2000_anc_mode mode)
|
|
{
|
|
struct i2c_client *i2c = wm2000->i2c;
|
|
int i, j;
|
|
int ret;
|
|
|
|
if (wm2000->anc_mode == mode)
|
|
return 0;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(anc_transitions); i++)
|
|
if (anc_transitions[i].source == wm2000->anc_mode &&
|
|
anc_transitions[i].dest == mode)
|
|
break;
|
|
if (i == ARRAY_SIZE(anc_transitions)) {
|
|
dev_err(&i2c->dev, "No transition for %d->%d\n",
|
|
wm2000->anc_mode, mode);
|
|
return -EINVAL;
|
|
}
|
|
|
|
for (j = 0; j < ARRAY_SIZE(anc_transitions[j].step); j++) {
|
|
if (!anc_transitions[i].step[j])
|
|
break;
|
|
ret = anc_transitions[i].step[j](i2c,
|
|
anc_transitions[i].analogue);
|
|
if (ret != 0)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int wm2000_anc_set_mode(struct wm2000_priv *wm2000)
|
|
{
|
|
struct i2c_client *i2c = wm2000->i2c;
|
|
enum wm2000_anc_mode mode;
|
|
|
|
if (wm2000->anc_eng_ena && wm2000->spk_ena)
|
|
if (wm2000->anc_active)
|
|
mode = ANC_ACTIVE;
|
|
else
|
|
mode = ANC_BYPASS;
|
|
else
|
|
mode = ANC_STANDBY;
|
|
|
|
dev_dbg(&i2c->dev, "Set mode %d (enabled %d, mute %d, active %d)\n",
|
|
mode, wm2000->anc_eng_ena, !wm2000->spk_ena,
|
|
wm2000->anc_active);
|
|
|
|
return wm2000_anc_transition(wm2000, mode);
|
|
}
|
|
|
|
static int wm2000_anc_mode_get(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct wm2000_priv *wm2000 = dev_get_drvdata(&wm2000_i2c->dev);
|
|
|
|
ucontrol->value.enumerated.item[0] = wm2000->anc_active;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int wm2000_anc_mode_put(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct wm2000_priv *wm2000 = dev_get_drvdata(&wm2000_i2c->dev);
|
|
int anc_active = ucontrol->value.enumerated.item[0];
|
|
|
|
if (anc_active > 1)
|
|
return -EINVAL;
|
|
|
|
wm2000->anc_active = anc_active;
|
|
|
|
return wm2000_anc_set_mode(wm2000);
|
|
}
|
|
|
|
static int wm2000_speaker_get(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct wm2000_priv *wm2000 = dev_get_drvdata(&wm2000_i2c->dev);
|
|
|
|
ucontrol->value.enumerated.item[0] = wm2000->spk_ena;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int wm2000_speaker_put(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct wm2000_priv *wm2000 = dev_get_drvdata(&wm2000_i2c->dev);
|
|
int val = ucontrol->value.enumerated.item[0];
|
|
|
|
if (val > 1)
|
|
return -EINVAL;
|
|
|
|
wm2000->spk_ena = val;
|
|
|
|
return wm2000_anc_set_mode(wm2000);
|
|
}
|
|
|
|
static const struct snd_kcontrol_new wm2000_controls[] = {
|
|
SOC_SINGLE_BOOL_EXT("WM2000 ANC Switch", 0,
|
|
wm2000_anc_mode_get,
|
|
wm2000_anc_mode_put),
|
|
SOC_SINGLE_BOOL_EXT("WM2000 Switch", 0,
|
|
wm2000_speaker_get,
|
|
wm2000_speaker_put),
|
|
};
|
|
|
|
static int wm2000_anc_power_event(struct snd_soc_dapm_widget *w,
|
|
struct snd_kcontrol *kcontrol, int event)
|
|
{
|
|
struct wm2000_priv *wm2000 = dev_get_drvdata(&wm2000_i2c->dev);
|
|
|
|
if (SND_SOC_DAPM_EVENT_ON(event))
|
|
wm2000->anc_eng_ena = 1;
|
|
|
|
if (SND_SOC_DAPM_EVENT_OFF(event))
|
|
wm2000->anc_eng_ena = 0;
|
|
|
|
return wm2000_anc_set_mode(wm2000);
|
|
}
|
|
|
|
static const struct snd_soc_dapm_widget wm2000_dapm_widgets[] = {
|
|
/* Externally visible pins */
|
|
SND_SOC_DAPM_OUTPUT("WM2000 SPKN"),
|
|
SND_SOC_DAPM_OUTPUT("WM2000 SPKP"),
|
|
|
|
SND_SOC_DAPM_INPUT("WM2000 LINN"),
|
|
SND_SOC_DAPM_INPUT("WM2000 LINP"),
|
|
|
|
SND_SOC_DAPM_PGA_E("ANC Engine", SND_SOC_NOPM, 0, 0, NULL, 0,
|
|
wm2000_anc_power_event,
|
|
SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
|
|
};
|
|
|
|
/* Target, Path, Source */
|
|
static const struct snd_soc_dapm_route audio_map[] = {
|
|
{ "WM2000 SPKN", NULL, "ANC Engine" },
|
|
{ "WM2000 SPKP", NULL, "ANC Engine" },
|
|
{ "ANC Engine", NULL, "WM2000 LINN" },
|
|
{ "ANC Engine", NULL, "WM2000 LINP" },
|
|
};
|
|
|
|
/* Called from the machine driver */
|
|
int wm2000_add_controls(struct snd_soc_codec *codec)
|
|
{
|
|
struct snd_soc_dapm_context *dapm = &codec->dapm;
|
|
int ret;
|
|
|
|
if (!wm2000_i2c) {
|
|
pr_err("WM2000 not yet probed\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
ret = snd_soc_dapm_new_controls(dapm, wm2000_dapm_widgets,
|
|
ARRAY_SIZE(wm2000_dapm_widgets));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return snd_soc_add_controls(codec, wm2000_controls,
|
|
ARRAY_SIZE(wm2000_controls));
|
|
}
|
|
EXPORT_SYMBOL_GPL(wm2000_add_controls);
|
|
|
|
static int __devinit wm2000_i2c_probe(struct i2c_client *i2c,
|
|
const struct i2c_device_id *i2c_id)
|
|
{
|
|
struct wm2000_priv *wm2000;
|
|
struct wm2000_platform_data *pdata;
|
|
const char *filename;
|
|
const struct firmware *fw;
|
|
int reg, ret;
|
|
u16 id;
|
|
|
|
if (wm2000_i2c) {
|
|
dev_err(&i2c->dev, "Another WM2000 is already registered\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
wm2000 = kzalloc(sizeof(struct wm2000_priv), GFP_KERNEL);
|
|
if (wm2000 == NULL) {
|
|
dev_err(&i2c->dev, "Unable to allocate private data\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* Verify that this is a WM2000 */
|
|
reg = wm2000_read(i2c, WM2000_REG_ID1);
|
|
id = reg << 8;
|
|
reg = wm2000_read(i2c, WM2000_REG_ID2);
|
|
id |= reg & 0xff;
|
|
|
|
if (id != 0x2000) {
|
|
dev_err(&i2c->dev, "Device is not a WM2000 - ID %x\n", id);
|
|
ret = -ENODEV;
|
|
goto err;
|
|
}
|
|
|
|
reg = wm2000_read(i2c, WM2000_REG_REVISON);
|
|
dev_info(&i2c->dev, "revision %c\n", reg + 'A');
|
|
|
|
filename = "wm2000_anc.bin";
|
|
pdata = dev_get_platdata(&i2c->dev);
|
|
if (pdata) {
|
|
wm2000->mclk_div = pdata->mclkdiv2;
|
|
wm2000->speech_clarity = !pdata->speech_enh_disable;
|
|
|
|
if (pdata->download_file)
|
|
filename = pdata->download_file;
|
|
}
|
|
|
|
ret = request_firmware(&fw, filename, &i2c->dev);
|
|
if (ret != 0) {
|
|
dev_err(&i2c->dev, "Failed to acquire ANC data: %d\n", ret);
|
|
goto err;
|
|
}
|
|
|
|
/* Pre-cook the concatenation of the register address onto the image */
|
|
wm2000->anc_download_size = fw->size + 2;
|
|
wm2000->anc_download = kmalloc(wm2000->anc_download_size, GFP_KERNEL);
|
|
if (wm2000->anc_download == NULL) {
|
|
dev_err(&i2c->dev, "Out of memory\n");
|
|
ret = -ENOMEM;
|
|
goto err_fw;
|
|
}
|
|
|
|
wm2000->anc_download[0] = 0x80;
|
|
wm2000->anc_download[1] = 0x00;
|
|
memcpy(wm2000->anc_download + 2, fw->data, fw->size);
|
|
|
|
release_firmware(fw);
|
|
|
|
dev_set_drvdata(&i2c->dev, wm2000);
|
|
wm2000->anc_eng_ena = 1;
|
|
wm2000->anc_active = 1;
|
|
wm2000->spk_ena = 1;
|
|
wm2000->i2c = i2c;
|
|
|
|
wm2000_reset(wm2000);
|
|
|
|
/* This will trigger a transition to standby mode by default */
|
|
wm2000_anc_set_mode(wm2000);
|
|
|
|
wm2000_i2c = i2c;
|
|
|
|
return 0;
|
|
|
|
err_fw:
|
|
release_firmware(fw);
|
|
err:
|
|
kfree(wm2000);
|
|
return ret;
|
|
}
|
|
|
|
static __devexit int wm2000_i2c_remove(struct i2c_client *i2c)
|
|
{
|
|
struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev);
|
|
|
|
wm2000_anc_transition(wm2000, ANC_OFF);
|
|
|
|
wm2000_i2c = NULL;
|
|
kfree(wm2000->anc_download);
|
|
kfree(wm2000);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void wm2000_i2c_shutdown(struct i2c_client *i2c)
|
|
{
|
|
struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev);
|
|
|
|
wm2000_anc_transition(wm2000, ANC_OFF);
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
static int wm2000_i2c_suspend(struct device *dev)
|
|
{
|
|
struct i2c_client *i2c = to_i2c_client(dev);
|
|
struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev);
|
|
|
|
return wm2000_anc_transition(wm2000, ANC_OFF);
|
|
}
|
|
|
|
static int wm2000_i2c_resume(struct device *dev)
|
|
{
|
|
struct i2c_client *i2c = to_i2c_client(dev);
|
|
struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev);
|
|
|
|
return wm2000_anc_set_mode(wm2000);
|
|
}
|
|
#endif
|
|
|
|
static SIMPLE_DEV_PM_OPS(wm2000_pm, wm2000_i2c_suspend, wm2000_i2c_resume);
|
|
|
|
static const struct i2c_device_id wm2000_i2c_id[] = {
|
|
{ "wm2000", 0 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, wm2000_i2c_id);
|
|
|
|
static struct i2c_driver wm2000_i2c_driver = {
|
|
.driver = {
|
|
.name = "wm2000",
|
|
.owner = THIS_MODULE,
|
|
.pm = &wm2000_pm,
|
|
},
|
|
.probe = wm2000_i2c_probe,
|
|
.remove = __devexit_p(wm2000_i2c_remove),
|
|
.shutdown = wm2000_i2c_shutdown,
|
|
.id_table = wm2000_i2c_id,
|
|
};
|
|
|
|
static int __init wm2000_init(void)
|
|
{
|
|
return i2c_add_driver(&wm2000_i2c_driver);
|
|
}
|
|
module_init(wm2000_init);
|
|
|
|
static void __exit wm2000_exit(void)
|
|
{
|
|
i2c_del_driver(&wm2000_i2c_driver);
|
|
}
|
|
module_exit(wm2000_exit);
|
|
|
|
MODULE_DESCRIPTION("ASoC WM2000 driver");
|
|
MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfonmicro.com>");
|
|
MODULE_LICENSE("GPL");
|