13a66d387SMark Brown /* 23a66d387SMark Brown * wm2000.c -- WM2000 ALSA Soc Audio driver 33a66d387SMark Brown * 4656baaebSMark Brown * Copyright 2008-2011 Wolfson Microelectronics PLC. 53a66d387SMark Brown * 63a66d387SMark Brown * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> 73a66d387SMark Brown * 83a66d387SMark Brown * This program is free software; you can redistribute it and/or modify 93a66d387SMark Brown * it under the terms of the GNU General Public License version 2 as 103a66d387SMark Brown * published by the Free Software Foundation. 113a66d387SMark Brown * 123a66d387SMark Brown * The download image for the WM2000 will be requested as 133a66d387SMark Brown * 'wm2000_anc.bin' by default (overridable via platform data) at 143a66d387SMark Brown * runtime and is expected to be in flat binary format. This is 153a66d387SMark Brown * generated by Wolfson configuration tools and includes 163a66d387SMark Brown * system-specific callibration information. If supplied as a 173a66d387SMark Brown * sequence of ASCII-encoded hexidecimal bytes this can be converted 183a66d387SMark Brown * into a flat binary with a command such as this on the command line: 193a66d387SMark Brown * 203a66d387SMark Brown * perl -e 'while (<>) { s/[\r\n]+// ; printf("%c", hex($_)); }' 213a66d387SMark Brown * < file > wm2000_anc.bin 223a66d387SMark Brown */ 233a66d387SMark Brown 243a66d387SMark Brown #include <linux/module.h> 253a66d387SMark Brown #include <linux/moduleparam.h> 263a66d387SMark Brown #include <linux/kernel.h> 273a66d387SMark Brown #include <linux/init.h> 283a66d387SMark Brown #include <linux/firmware.h> 293a66d387SMark Brown #include <linux/delay.h> 303a66d387SMark Brown #include <linux/pm.h> 313a66d387SMark Brown #include <linux/i2c.h> 328aa1fe81SMark Brown #include <linux/regmap.h> 333a66d387SMark Brown #include <linux/debugfs.h> 34a89be93cSMark Brown #include <linux/regulator/consumer.h> 355a0e3ad6STejun Heo #include <linux/slab.h> 363a66d387SMark Brown #include <sound/core.h> 373a66d387SMark Brown #include <sound/pcm.h> 383a66d387SMark Brown #include <sound/pcm_params.h> 393a66d387SMark Brown #include <sound/soc.h> 403a66d387SMark Brown #include <sound/initval.h> 413a66d387SMark Brown #include <sound/tlv.h> 423a66d387SMark Brown 433a66d387SMark Brown #include <sound/wm2000.h> 443a66d387SMark Brown 453a66d387SMark Brown #include "wm2000.h" 463a66d387SMark Brown 47a89be93cSMark Brown #define WM2000_NUM_SUPPLIES 3 48a89be93cSMark Brown 49a89be93cSMark Brown static const char *wm2000_supplies[WM2000_NUM_SUPPLIES] = { 50a89be93cSMark Brown "SPKVDD", 51a89be93cSMark Brown "DBVDD", 52a89be93cSMark Brown "DCVDD", 53a89be93cSMark Brown }; 54a89be93cSMark Brown 553a66d387SMark Brown enum wm2000_anc_mode { 563a66d387SMark Brown ANC_ACTIVE = 0, 573a66d387SMark Brown ANC_BYPASS = 1, 583a66d387SMark Brown ANC_STANDBY = 2, 593a66d387SMark Brown ANC_OFF = 3, 603a66d387SMark Brown }; 613a66d387SMark Brown 623a66d387SMark Brown struct wm2000_priv { 633a66d387SMark Brown struct i2c_client *i2c; 648aa1fe81SMark Brown struct regmap *regmap; 653a66d387SMark Brown 66a89be93cSMark Brown struct regulator_bulk_data supplies[WM2000_NUM_SUPPLIES]; 67a89be93cSMark Brown 683a66d387SMark Brown enum wm2000_anc_mode anc_mode; 693a66d387SMark Brown 703a66d387SMark Brown unsigned int anc_active:1; 713a66d387SMark Brown unsigned int anc_eng_ena:1; 723a66d387SMark Brown unsigned int spk_ena:1; 733a66d387SMark Brown 743a66d387SMark Brown unsigned int mclk_div:1; 753a66d387SMark Brown unsigned int speech_clarity:1; 763a66d387SMark Brown 773a66d387SMark Brown int anc_download_size; 783a66d387SMark Brown char *anc_download; 793a66d387SMark Brown }; 803a66d387SMark Brown 813a66d387SMark Brown static int wm2000_write(struct i2c_client *i2c, unsigned int reg, 823a66d387SMark Brown unsigned int value) 833a66d387SMark Brown { 848aa1fe81SMark Brown struct wm2000_priv *wm2000 = i2c_get_clientdata(i2c); 858aa1fe81SMark Brown return regmap_write(wm2000->regmap, reg, value); 863a66d387SMark Brown } 873a66d387SMark Brown 883a66d387SMark Brown static unsigned int wm2000_read(struct i2c_client *i2c, unsigned int r) 893a66d387SMark Brown { 908aa1fe81SMark Brown struct wm2000_priv *wm2000 = i2c_get_clientdata(i2c); 918aa1fe81SMark Brown unsigned int val; 923a66d387SMark Brown int ret; 933a66d387SMark Brown 948aa1fe81SMark Brown ret = regmap_read(wm2000->regmap, r, &val); 958aa1fe81SMark Brown if (ret < 0) 968aa1fe81SMark Brown return -1; 973a66d387SMark Brown 988aa1fe81SMark Brown return val; 993a66d387SMark Brown } 1003a66d387SMark Brown 1013a66d387SMark Brown static void wm2000_reset(struct wm2000_priv *wm2000) 1023a66d387SMark Brown { 1033a66d387SMark Brown struct i2c_client *i2c = wm2000->i2c; 1043a66d387SMark Brown 1053a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_ENG_CLR); 1063a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_RAM_CLR); 1073a66d387SMark Brown wm2000_write(i2c, WM2000_REG_ID1, 0); 1083a66d387SMark Brown 1093a66d387SMark Brown wm2000->anc_mode = ANC_OFF; 1103a66d387SMark Brown } 1113a66d387SMark Brown 1123a66d387SMark Brown static int wm2000_poll_bit(struct i2c_client *i2c, 1133ff1ec27SMark Brown unsigned int reg, u8 mask) 1143a66d387SMark Brown { 1153ff1ec27SMark Brown int timeout = 4000; 1163a66d387SMark Brown int val; 1173a66d387SMark Brown 1183a66d387SMark Brown val = wm2000_read(i2c, reg); 1193a66d387SMark Brown 1203a66d387SMark Brown while (!(val & mask) && --timeout) { 1213a66d387SMark Brown msleep(1); 1223a66d387SMark Brown val = wm2000_read(i2c, reg); 1233a66d387SMark Brown } 1243a66d387SMark Brown 1253a66d387SMark Brown if (timeout == 0) 1263a66d387SMark Brown return 0; 1273a66d387SMark Brown else 1283a66d387SMark Brown return 1; 1293a66d387SMark Brown } 1303a66d387SMark Brown 1313a66d387SMark Brown static int wm2000_power_up(struct i2c_client *i2c, int analogue) 1323a66d387SMark Brown { 1333a66d387SMark Brown struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev); 1343ff1ec27SMark Brown int ret; 1353a66d387SMark Brown 1363a66d387SMark Brown BUG_ON(wm2000->anc_mode != ANC_OFF); 1373a66d387SMark Brown 1383a66d387SMark Brown dev_dbg(&i2c->dev, "Beginning power up\n"); 1393a66d387SMark Brown 140a89be93cSMark Brown ret = regulator_bulk_enable(WM2000_NUM_SUPPLIES, wm2000->supplies); 141a89be93cSMark Brown if (ret != 0) { 142a89be93cSMark Brown dev_err(&i2c->dev, "Failed to enable supplies: %d\n", ret); 143a89be93cSMark Brown return ret; 144a89be93cSMark Brown } 145a89be93cSMark Brown 1463a66d387SMark Brown if (!wm2000->mclk_div) { 1473a66d387SMark Brown dev_dbg(&i2c->dev, "Disabling MCLK divider\n"); 1483a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_CTL2, 1493a66d387SMark Brown WM2000_MCLK_DIV2_ENA_CLR); 1503a66d387SMark Brown } else { 1513a66d387SMark Brown dev_dbg(&i2c->dev, "Enabling MCLK divider\n"); 1523a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_CTL2, 1533a66d387SMark Brown WM2000_MCLK_DIV2_ENA_SET); 1543a66d387SMark Brown } 1553a66d387SMark Brown 1563a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_ENG_CLR); 1573a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_ENG_SET); 1583a66d387SMark Brown 1593a66d387SMark Brown /* Wait for ANC engine to become ready */ 1603a66d387SMark Brown if (!wm2000_poll_bit(i2c, WM2000_REG_ANC_STAT, 1613ff1ec27SMark Brown WM2000_ANC_ENG_IDLE)) { 1623a66d387SMark Brown dev_err(&i2c->dev, "ANC engine failed to reset\n"); 163a89be93cSMark Brown regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies); 1643a66d387SMark Brown return -ETIMEDOUT; 1653a66d387SMark Brown } 1663a66d387SMark Brown 1673a66d387SMark Brown if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS, 1683ff1ec27SMark Brown WM2000_STATUS_BOOT_COMPLETE)) { 1693a66d387SMark Brown dev_err(&i2c->dev, "ANC engine failed to initialise\n"); 170a89be93cSMark Brown regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies); 1713a66d387SMark Brown return -ETIMEDOUT; 1723a66d387SMark Brown } 1733a66d387SMark Brown 1743a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_RAM_SET); 1753a66d387SMark Brown 1763a66d387SMark Brown /* Open code download of the data since it is the only bulk 1773a66d387SMark Brown * write we do. */ 1783a66d387SMark Brown dev_dbg(&i2c->dev, "Downloading %d bytes\n", 1793a66d387SMark Brown wm2000->anc_download_size - 2); 1803a66d387SMark Brown 1813a66d387SMark Brown ret = i2c_master_send(i2c, wm2000->anc_download, 1823a66d387SMark Brown wm2000->anc_download_size); 1833a66d387SMark Brown if (ret < 0) { 1843a66d387SMark Brown dev_err(&i2c->dev, "i2c_transfer() failed: %d\n", ret); 185a89be93cSMark Brown regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies); 1863a66d387SMark Brown return ret; 1873a66d387SMark Brown } 1883a66d387SMark Brown if (ret != wm2000->anc_download_size) { 1893a66d387SMark Brown dev_err(&i2c->dev, "i2c_transfer() failed, %d != %d\n", 1903a66d387SMark Brown ret, wm2000->anc_download_size); 191a89be93cSMark Brown regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies); 1923a66d387SMark Brown return -EIO; 1933a66d387SMark Brown } 1943a66d387SMark Brown 1953a66d387SMark Brown dev_dbg(&i2c->dev, "Download complete\n"); 1963a66d387SMark Brown 1973a66d387SMark Brown if (analogue) { 1983ff1ec27SMark Brown wm2000_write(i2c, WM2000_REG_ANA_VMID_PU_TIME, 248 / 4); 1993a66d387SMark Brown 2003a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL, 2013a66d387SMark Brown WM2000_MODE_ANA_SEQ_INCLUDE | 2023a66d387SMark Brown WM2000_MODE_MOUSE_ENABLE | 2033a66d387SMark Brown WM2000_MODE_THERMAL_ENABLE); 2043a66d387SMark Brown } else { 2053a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL, 2063a66d387SMark Brown WM2000_MODE_MOUSE_ENABLE | 2073a66d387SMark Brown WM2000_MODE_THERMAL_ENABLE); 2083a66d387SMark Brown } 2093a66d387SMark Brown 2103a66d387SMark Brown ret = wm2000_read(i2c, WM2000_REG_SPEECH_CLARITY); 2113a66d387SMark Brown if (wm2000->speech_clarity) 2123a66d387SMark Brown ret &= ~WM2000_SPEECH_CLARITY; 2133a66d387SMark Brown else 2143a66d387SMark Brown ret |= WM2000_SPEECH_CLARITY; 2153a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SPEECH_CLARITY, ret); 2163a66d387SMark Brown 2173a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_START0, 0x33); 2183a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_START1, 0x02); 2193a66d387SMark Brown 2203a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_INT_N_CLR); 2213a66d387SMark Brown 2223a66d387SMark Brown if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS, 2233ff1ec27SMark Brown WM2000_STATUS_MOUSE_ACTIVE)) { 2243ff1ec27SMark Brown dev_err(&i2c->dev, "Timed out waiting for device\n"); 225a89be93cSMark Brown regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies); 2263a66d387SMark Brown return -ETIMEDOUT; 2273a66d387SMark Brown } 2283a66d387SMark Brown 2293a66d387SMark Brown dev_dbg(&i2c->dev, "ANC active\n"); 2303a66d387SMark Brown if (analogue) 2313a66d387SMark Brown dev_dbg(&i2c->dev, "Analogue active\n"); 2323a66d387SMark Brown wm2000->anc_mode = ANC_ACTIVE; 2333a66d387SMark Brown 2343a66d387SMark Brown return 0; 2353a66d387SMark Brown } 2363a66d387SMark Brown 2373a66d387SMark Brown static int wm2000_power_down(struct i2c_client *i2c, int analogue) 2383a66d387SMark Brown { 2393a66d387SMark Brown struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev); 2403a66d387SMark Brown 2413a66d387SMark Brown if (analogue) { 2423ff1ec27SMark Brown wm2000_write(i2c, WM2000_REG_ANA_VMID_PD_TIME, 248 / 4); 2433a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL, 2443a66d387SMark Brown WM2000_MODE_ANA_SEQ_INCLUDE | 2453a66d387SMark Brown WM2000_MODE_POWER_DOWN); 2463a66d387SMark Brown } else { 2473a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL, 2483a66d387SMark Brown WM2000_MODE_POWER_DOWN); 2493a66d387SMark Brown } 2503a66d387SMark Brown 2513a66d387SMark Brown if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS, 2523ff1ec27SMark Brown WM2000_STATUS_POWER_DOWN_COMPLETE)) { 2533a66d387SMark Brown dev_err(&i2c->dev, "Timeout waiting for ANC power down\n"); 2543a66d387SMark Brown return -ETIMEDOUT; 2553a66d387SMark Brown } 2563a66d387SMark Brown 2573a66d387SMark Brown if (!wm2000_poll_bit(i2c, WM2000_REG_ANC_STAT, 2583ff1ec27SMark Brown WM2000_ANC_ENG_IDLE)) { 2593a66d387SMark Brown dev_err(&i2c->dev, "Timeout waiting for ANC engine idle\n"); 2603a66d387SMark Brown return -ETIMEDOUT; 2613a66d387SMark Brown } 2623a66d387SMark Brown 263a89be93cSMark Brown regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies); 264a89be93cSMark Brown 2653a66d387SMark Brown dev_dbg(&i2c->dev, "powered off\n"); 2663a66d387SMark Brown wm2000->anc_mode = ANC_OFF; 2673a66d387SMark Brown 2683a66d387SMark Brown return 0; 2693a66d387SMark Brown } 2703a66d387SMark Brown 2713a66d387SMark Brown static int wm2000_enter_bypass(struct i2c_client *i2c, int analogue) 2723a66d387SMark Brown { 2733a66d387SMark Brown struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev); 2743a66d387SMark Brown 2753a66d387SMark Brown BUG_ON(wm2000->anc_mode != ANC_ACTIVE); 2763a66d387SMark Brown 2773a66d387SMark Brown if (analogue) { 2783a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL, 2793a66d387SMark Brown WM2000_MODE_ANA_SEQ_INCLUDE | 2803a66d387SMark Brown WM2000_MODE_THERMAL_ENABLE | 2813a66d387SMark Brown WM2000_MODE_BYPASS_ENTRY); 2823a66d387SMark Brown } else { 2833a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL, 2843a66d387SMark Brown WM2000_MODE_THERMAL_ENABLE | 2853a66d387SMark Brown WM2000_MODE_BYPASS_ENTRY); 2863a66d387SMark Brown } 2873a66d387SMark Brown 2883a66d387SMark Brown if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS, 2893ff1ec27SMark Brown WM2000_STATUS_ANC_DISABLED)) { 2903a66d387SMark Brown dev_err(&i2c->dev, "Timeout waiting for ANC disable\n"); 2913a66d387SMark Brown return -ETIMEDOUT; 2923a66d387SMark Brown } 2933a66d387SMark Brown 2943a66d387SMark Brown if (!wm2000_poll_bit(i2c, WM2000_REG_ANC_STAT, 2953ff1ec27SMark Brown WM2000_ANC_ENG_IDLE)) { 2963a66d387SMark Brown dev_err(&i2c->dev, "Timeout waiting for ANC engine idle\n"); 2973a66d387SMark Brown return -ETIMEDOUT; 2983a66d387SMark Brown } 2993a66d387SMark Brown 3003a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_CTL1, WM2000_SYS_STBY); 3013a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_RAM_CLR); 3023a66d387SMark Brown 3033a66d387SMark Brown wm2000->anc_mode = ANC_BYPASS; 3043a66d387SMark Brown dev_dbg(&i2c->dev, "bypass enabled\n"); 3053a66d387SMark Brown 3063a66d387SMark Brown return 0; 3073a66d387SMark Brown } 3083a66d387SMark Brown 3093a66d387SMark Brown static int wm2000_exit_bypass(struct i2c_client *i2c, int analogue) 3103a66d387SMark Brown { 3113a66d387SMark Brown struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev); 3123a66d387SMark Brown 3133a66d387SMark Brown BUG_ON(wm2000->anc_mode != ANC_BYPASS); 3143a66d387SMark Brown 3153a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_CTL1, 0); 3163a66d387SMark Brown 3173a66d387SMark Brown if (analogue) { 3183a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL, 3193a66d387SMark Brown WM2000_MODE_ANA_SEQ_INCLUDE | 3203a66d387SMark Brown WM2000_MODE_MOUSE_ENABLE | 3213a66d387SMark Brown WM2000_MODE_THERMAL_ENABLE); 3223a66d387SMark Brown } else { 3233a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL, 3243a66d387SMark Brown WM2000_MODE_MOUSE_ENABLE | 3253a66d387SMark Brown WM2000_MODE_THERMAL_ENABLE); 3263a66d387SMark Brown } 3273a66d387SMark Brown 3283a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_RAM_SET); 3293a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_INT_N_CLR); 3303a66d387SMark Brown 3313a66d387SMark Brown if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS, 3323ff1ec27SMark Brown WM2000_STATUS_MOUSE_ACTIVE)) { 3333a66d387SMark Brown dev_err(&i2c->dev, "Timed out waiting for MOUSE\n"); 3343a66d387SMark Brown return -ETIMEDOUT; 3353a66d387SMark Brown } 3363a66d387SMark Brown 3373a66d387SMark Brown wm2000->anc_mode = ANC_ACTIVE; 3383a66d387SMark Brown dev_dbg(&i2c->dev, "MOUSE active\n"); 3393a66d387SMark Brown 3403a66d387SMark Brown return 0; 3413a66d387SMark Brown } 3423a66d387SMark Brown 3433a66d387SMark Brown static int wm2000_enter_standby(struct i2c_client *i2c, int analogue) 3443a66d387SMark Brown { 3453a66d387SMark Brown struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev); 3463a66d387SMark Brown 3473a66d387SMark Brown BUG_ON(wm2000->anc_mode != ANC_ACTIVE); 3483a66d387SMark Brown 3493a66d387SMark Brown if (analogue) { 3503ff1ec27SMark Brown wm2000_write(i2c, WM2000_REG_ANA_VMID_PD_TIME, 248 / 4); 3513a66d387SMark Brown 3523a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL, 3533a66d387SMark Brown WM2000_MODE_ANA_SEQ_INCLUDE | 3543a66d387SMark Brown WM2000_MODE_THERMAL_ENABLE | 3553a66d387SMark Brown WM2000_MODE_STANDBY_ENTRY); 3563a66d387SMark Brown } else { 3573a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL, 3583a66d387SMark Brown WM2000_MODE_THERMAL_ENABLE | 3593a66d387SMark Brown WM2000_MODE_STANDBY_ENTRY); 3603a66d387SMark Brown } 3613a66d387SMark Brown 3623a66d387SMark Brown if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS, 3633ff1ec27SMark Brown WM2000_STATUS_ANC_DISABLED)) { 3643a66d387SMark Brown dev_err(&i2c->dev, 3653a66d387SMark Brown "Timed out waiting for ANC disable after 1ms\n"); 3663a66d387SMark Brown return -ETIMEDOUT; 3673a66d387SMark Brown } 3683a66d387SMark Brown 3693ff1ec27SMark Brown if (!wm2000_poll_bit(i2c, WM2000_REG_ANC_STAT, WM2000_ANC_ENG_IDLE)) { 3703a66d387SMark Brown dev_err(&i2c->dev, 3713ff1ec27SMark Brown "Timed out waiting for standby\n"); 3723a66d387SMark Brown return -ETIMEDOUT; 3733a66d387SMark Brown } 3743a66d387SMark Brown 3753a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_CTL1, WM2000_SYS_STBY); 3763a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_RAM_CLR); 3773a66d387SMark Brown 3783a66d387SMark Brown wm2000->anc_mode = ANC_STANDBY; 3793a66d387SMark Brown dev_dbg(&i2c->dev, "standby\n"); 3803a66d387SMark Brown if (analogue) 3813a66d387SMark Brown dev_dbg(&i2c->dev, "Analogue disabled\n"); 3823a66d387SMark Brown 3833a66d387SMark Brown return 0; 3843a66d387SMark Brown } 3853a66d387SMark Brown 3863a66d387SMark Brown static int wm2000_exit_standby(struct i2c_client *i2c, int analogue) 3873a66d387SMark Brown { 3883a66d387SMark Brown struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev); 3893a66d387SMark Brown 3903a66d387SMark Brown BUG_ON(wm2000->anc_mode != ANC_STANDBY); 3913a66d387SMark Brown 3923a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_CTL1, 0); 3933a66d387SMark Brown 3943a66d387SMark Brown if (analogue) { 3953ff1ec27SMark Brown wm2000_write(i2c, WM2000_REG_ANA_VMID_PU_TIME, 248 / 4); 3963a66d387SMark Brown 3973a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL, 3983a66d387SMark Brown WM2000_MODE_ANA_SEQ_INCLUDE | 3993a66d387SMark Brown WM2000_MODE_THERMAL_ENABLE | 4003a66d387SMark Brown WM2000_MODE_MOUSE_ENABLE); 4013a66d387SMark Brown } else { 4023a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL, 4033a66d387SMark Brown WM2000_MODE_THERMAL_ENABLE | 4043a66d387SMark Brown WM2000_MODE_MOUSE_ENABLE); 4053a66d387SMark Brown } 4063a66d387SMark Brown 4073a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_RAM_SET); 4083a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_INT_N_CLR); 4093a66d387SMark Brown 4103a66d387SMark Brown if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS, 4113ff1ec27SMark Brown WM2000_STATUS_MOUSE_ACTIVE)) { 4123ff1ec27SMark Brown dev_err(&i2c->dev, "Timed out waiting for MOUSE\n"); 4133a66d387SMark Brown return -ETIMEDOUT; 4143a66d387SMark Brown } 4153a66d387SMark Brown 4163a66d387SMark Brown wm2000->anc_mode = ANC_ACTIVE; 4173a66d387SMark Brown dev_dbg(&i2c->dev, "MOUSE active\n"); 4183a66d387SMark Brown if (analogue) 4193a66d387SMark Brown dev_dbg(&i2c->dev, "Analogue enabled\n"); 4203a66d387SMark Brown 4213a66d387SMark Brown return 0; 4223a66d387SMark Brown } 4233a66d387SMark Brown 4243a66d387SMark Brown typedef int (*wm2000_mode_fn)(struct i2c_client *i2c, int analogue); 4253a66d387SMark Brown 4263a66d387SMark Brown static struct { 4273a66d387SMark Brown enum wm2000_anc_mode source; 4283a66d387SMark Brown enum wm2000_anc_mode dest; 4293a66d387SMark Brown int analogue; 4303a66d387SMark Brown wm2000_mode_fn step[2]; 4313a66d387SMark Brown } anc_transitions[] = { 4323a66d387SMark Brown { 4333a66d387SMark Brown .source = ANC_OFF, 4343a66d387SMark Brown .dest = ANC_ACTIVE, 4353a66d387SMark Brown .analogue = 1, 4363a66d387SMark Brown .step = { 4373a66d387SMark Brown wm2000_power_up, 4383a66d387SMark Brown }, 4393a66d387SMark Brown }, 4403a66d387SMark Brown { 4413a66d387SMark Brown .source = ANC_OFF, 4423a66d387SMark Brown .dest = ANC_STANDBY, 4433a66d387SMark Brown .step = { 4443a66d387SMark Brown wm2000_power_up, 4453a66d387SMark Brown wm2000_enter_standby, 4463a66d387SMark Brown }, 4473a66d387SMark Brown }, 4483a66d387SMark Brown { 4493a66d387SMark Brown .source = ANC_OFF, 4503a66d387SMark Brown .dest = ANC_BYPASS, 4513a66d387SMark Brown .analogue = 1, 4523a66d387SMark Brown .step = { 4533a66d387SMark Brown wm2000_power_up, 4543a66d387SMark Brown wm2000_enter_bypass, 4553a66d387SMark Brown }, 4563a66d387SMark Brown }, 4573a66d387SMark Brown { 4583a66d387SMark Brown .source = ANC_ACTIVE, 4593a66d387SMark Brown .dest = ANC_BYPASS, 4603a66d387SMark Brown .analogue = 1, 4613a66d387SMark Brown .step = { 4623a66d387SMark Brown wm2000_enter_bypass, 4633a66d387SMark Brown }, 4643a66d387SMark Brown }, 4653a66d387SMark Brown { 4663a66d387SMark Brown .source = ANC_ACTIVE, 4673a66d387SMark Brown .dest = ANC_STANDBY, 4683a66d387SMark Brown .analogue = 1, 4693a66d387SMark Brown .step = { 4703a66d387SMark Brown wm2000_enter_standby, 4713a66d387SMark Brown }, 4723a66d387SMark Brown }, 4733a66d387SMark Brown { 4743a66d387SMark Brown .source = ANC_ACTIVE, 4753a66d387SMark Brown .dest = ANC_OFF, 4763a66d387SMark Brown .analogue = 1, 4773a66d387SMark Brown .step = { 4783a66d387SMark Brown wm2000_power_down, 4793a66d387SMark Brown }, 4803a66d387SMark Brown }, 4813a66d387SMark Brown { 4823a66d387SMark Brown .source = ANC_BYPASS, 4833a66d387SMark Brown .dest = ANC_ACTIVE, 4843a66d387SMark Brown .analogue = 1, 4853a66d387SMark Brown .step = { 4863a66d387SMark Brown wm2000_exit_bypass, 4873a66d387SMark Brown }, 4883a66d387SMark Brown }, 4893a66d387SMark Brown { 4903a66d387SMark Brown .source = ANC_BYPASS, 4913a66d387SMark Brown .dest = ANC_STANDBY, 4923a66d387SMark Brown .analogue = 1, 4933a66d387SMark Brown .step = { 4943a66d387SMark Brown wm2000_exit_bypass, 4953a66d387SMark Brown wm2000_enter_standby, 4963a66d387SMark Brown }, 4973a66d387SMark Brown }, 4983a66d387SMark Brown { 4993a66d387SMark Brown .source = ANC_BYPASS, 5003a66d387SMark Brown .dest = ANC_OFF, 5013a66d387SMark Brown .step = { 5023a66d387SMark Brown wm2000_exit_bypass, 5033a66d387SMark Brown wm2000_power_down, 5043a66d387SMark Brown }, 5053a66d387SMark Brown }, 5063a66d387SMark Brown { 5073a66d387SMark Brown .source = ANC_STANDBY, 5083a66d387SMark Brown .dest = ANC_ACTIVE, 5093a66d387SMark Brown .analogue = 1, 5103a66d387SMark Brown .step = { 5113a66d387SMark Brown wm2000_exit_standby, 5123a66d387SMark Brown }, 5133a66d387SMark Brown }, 5143a66d387SMark Brown { 5153a66d387SMark Brown .source = ANC_STANDBY, 5163a66d387SMark Brown .dest = ANC_BYPASS, 5173a66d387SMark Brown .analogue = 1, 5183a66d387SMark Brown .step = { 5193a66d387SMark Brown wm2000_exit_standby, 5203a66d387SMark Brown wm2000_enter_bypass, 5213a66d387SMark Brown }, 5223a66d387SMark Brown }, 5233a66d387SMark Brown { 5243a66d387SMark Brown .source = ANC_STANDBY, 5253a66d387SMark Brown .dest = ANC_OFF, 5263a66d387SMark Brown .step = { 5273a66d387SMark Brown wm2000_exit_standby, 5283a66d387SMark Brown wm2000_power_down, 5293a66d387SMark Brown }, 5303a66d387SMark Brown }, 5313a66d387SMark Brown }; 5323a66d387SMark Brown 5333a66d387SMark Brown static int wm2000_anc_transition(struct wm2000_priv *wm2000, 5343a66d387SMark Brown enum wm2000_anc_mode mode) 5353a66d387SMark Brown { 5363a66d387SMark Brown struct i2c_client *i2c = wm2000->i2c; 5373a66d387SMark Brown int i, j; 5383a66d387SMark Brown int ret; 5393a66d387SMark Brown 5403a66d387SMark Brown if (wm2000->anc_mode == mode) 5413a66d387SMark Brown return 0; 5423a66d387SMark Brown 5433a66d387SMark Brown for (i = 0; i < ARRAY_SIZE(anc_transitions); i++) 5443a66d387SMark Brown if (anc_transitions[i].source == wm2000->anc_mode && 5453a66d387SMark Brown anc_transitions[i].dest == mode) 5463a66d387SMark Brown break; 5473a66d387SMark Brown if (i == ARRAY_SIZE(anc_transitions)) { 5483a66d387SMark Brown dev_err(&i2c->dev, "No transition for %d->%d\n", 5493a66d387SMark Brown wm2000->anc_mode, mode); 5503a66d387SMark Brown return -EINVAL; 5513a66d387SMark Brown } 5523a66d387SMark Brown 5533a66d387SMark Brown for (j = 0; j < ARRAY_SIZE(anc_transitions[j].step); j++) { 5543a66d387SMark Brown if (!anc_transitions[i].step[j]) 5553a66d387SMark Brown break; 5563a66d387SMark Brown ret = anc_transitions[i].step[j](i2c, 5573a66d387SMark Brown anc_transitions[i].analogue); 5583a66d387SMark Brown if (ret != 0) 5593a66d387SMark Brown return ret; 5603a66d387SMark Brown } 5613a66d387SMark Brown 5623a66d387SMark Brown return 0; 5633a66d387SMark Brown } 5643a66d387SMark Brown 5653a66d387SMark Brown static int wm2000_anc_set_mode(struct wm2000_priv *wm2000) 5663a66d387SMark Brown { 5673a66d387SMark Brown struct i2c_client *i2c = wm2000->i2c; 5683a66d387SMark Brown enum wm2000_anc_mode mode; 5693a66d387SMark Brown 5703a66d387SMark Brown if (wm2000->anc_eng_ena && wm2000->spk_ena) 5713a66d387SMark Brown if (wm2000->anc_active) 5723a66d387SMark Brown mode = ANC_ACTIVE; 5733a66d387SMark Brown else 5743a66d387SMark Brown mode = ANC_BYPASS; 5753a66d387SMark Brown else 5763a66d387SMark Brown mode = ANC_STANDBY; 5773a66d387SMark Brown 5783a66d387SMark Brown dev_dbg(&i2c->dev, "Set mode %d (enabled %d, mute %d, active %d)\n", 5793a66d387SMark Brown mode, wm2000->anc_eng_ena, !wm2000->spk_ena, 5803a66d387SMark Brown wm2000->anc_active); 5813a66d387SMark Brown 5823a66d387SMark Brown return wm2000_anc_transition(wm2000, mode); 5833a66d387SMark Brown } 5843a66d387SMark Brown 5853a66d387SMark Brown static int wm2000_anc_mode_get(struct snd_kcontrol *kcontrol, 5863a66d387SMark Brown struct snd_ctl_elem_value *ucontrol) 5873a66d387SMark Brown { 5884911ccdbSMark Brown struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); 5894911ccdbSMark Brown struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev); 5903a66d387SMark Brown 5913a66d387SMark Brown ucontrol->value.enumerated.item[0] = wm2000->anc_active; 5923a66d387SMark Brown 5933a66d387SMark Brown return 0; 5943a66d387SMark Brown } 5953a66d387SMark Brown 5963a66d387SMark Brown static int wm2000_anc_mode_put(struct snd_kcontrol *kcontrol, 5973a66d387SMark Brown struct snd_ctl_elem_value *ucontrol) 5983a66d387SMark Brown { 5994911ccdbSMark Brown struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); 6004911ccdbSMark Brown struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev); 6013a66d387SMark Brown int anc_active = ucontrol->value.enumerated.item[0]; 6023a66d387SMark Brown 6033a66d387SMark Brown if (anc_active > 1) 6043a66d387SMark Brown return -EINVAL; 6053a66d387SMark Brown 6063a66d387SMark Brown wm2000->anc_active = anc_active; 6073a66d387SMark Brown 6083a66d387SMark Brown return wm2000_anc_set_mode(wm2000); 6093a66d387SMark Brown } 6103a66d387SMark Brown 6113a66d387SMark Brown static int wm2000_speaker_get(struct snd_kcontrol *kcontrol, 6123a66d387SMark Brown struct snd_ctl_elem_value *ucontrol) 6133a66d387SMark Brown { 6144911ccdbSMark Brown struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); 6154911ccdbSMark Brown struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev); 6163a66d387SMark Brown 6173a66d387SMark Brown ucontrol->value.enumerated.item[0] = wm2000->spk_ena; 6183a66d387SMark Brown 6193a66d387SMark Brown return 0; 6203a66d387SMark Brown } 6213a66d387SMark Brown 6223a66d387SMark Brown static int wm2000_speaker_put(struct snd_kcontrol *kcontrol, 6233a66d387SMark Brown struct snd_ctl_elem_value *ucontrol) 6243a66d387SMark Brown { 6254911ccdbSMark Brown struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); 6264911ccdbSMark Brown struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev); 6273a66d387SMark Brown int val = ucontrol->value.enumerated.item[0]; 6283a66d387SMark Brown 6293a66d387SMark Brown if (val > 1) 6303a66d387SMark Brown return -EINVAL; 6313a66d387SMark Brown 6323a66d387SMark Brown wm2000->spk_ena = val; 6333a66d387SMark Brown 6343a66d387SMark Brown return wm2000_anc_set_mode(wm2000); 6353a66d387SMark Brown } 6363a66d387SMark Brown 6373a66d387SMark Brown static const struct snd_kcontrol_new wm2000_controls[] = { 6383a66d387SMark Brown SOC_SINGLE_BOOL_EXT("WM2000 ANC Switch", 0, 6393a66d387SMark Brown wm2000_anc_mode_get, 6403a66d387SMark Brown wm2000_anc_mode_put), 6413a66d387SMark Brown SOC_SINGLE_BOOL_EXT("WM2000 Switch", 0, 6423a66d387SMark Brown wm2000_speaker_get, 6433a66d387SMark Brown wm2000_speaker_put), 6443a66d387SMark Brown }; 6453a66d387SMark Brown 6463a66d387SMark Brown static int wm2000_anc_power_event(struct snd_soc_dapm_widget *w, 6473a66d387SMark Brown struct snd_kcontrol *kcontrol, int event) 6483a66d387SMark Brown { 649a5ccea22SMark Brown struct snd_soc_codec *codec = w->codec; 6504911ccdbSMark Brown struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev); 6513a66d387SMark Brown 6523a66d387SMark Brown if (SND_SOC_DAPM_EVENT_ON(event)) 6533a66d387SMark Brown wm2000->anc_eng_ena = 1; 6543a66d387SMark Brown 6553a66d387SMark Brown if (SND_SOC_DAPM_EVENT_OFF(event)) 6563a66d387SMark Brown wm2000->anc_eng_ena = 0; 6573a66d387SMark Brown 6583a66d387SMark Brown return wm2000_anc_set_mode(wm2000); 6593a66d387SMark Brown } 6603a66d387SMark Brown 6613a66d387SMark Brown static const struct snd_soc_dapm_widget wm2000_dapm_widgets[] = { 6623a66d387SMark Brown /* Externally visible pins */ 6634911ccdbSMark Brown SND_SOC_DAPM_OUTPUT("SPKN"), 6644911ccdbSMark Brown SND_SOC_DAPM_OUTPUT("SPKP"), 6653a66d387SMark Brown 6664911ccdbSMark Brown SND_SOC_DAPM_INPUT("LINN"), 6674911ccdbSMark Brown SND_SOC_DAPM_INPUT("LINP"), 6683a66d387SMark Brown 6693a66d387SMark Brown SND_SOC_DAPM_PGA_E("ANC Engine", SND_SOC_NOPM, 0, 0, NULL, 0, 6703a66d387SMark Brown wm2000_anc_power_event, 6713a66d387SMark Brown SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), 6723a66d387SMark Brown }; 6733a66d387SMark Brown 6743a66d387SMark Brown /* Target, Path, Source */ 6754911ccdbSMark Brown static const struct snd_soc_dapm_route wm2000_audio_map[] = { 6764911ccdbSMark Brown { "SPKN", NULL, "ANC Engine" }, 6774911ccdbSMark Brown { "SPKP", NULL, "ANC Engine" }, 6784911ccdbSMark Brown { "ANC Engine", NULL, "LINN" }, 6794911ccdbSMark Brown { "ANC Engine", NULL, "LINP" }, 6803a66d387SMark Brown }; 6813a66d387SMark Brown 6824911ccdbSMark Brown #ifdef CONFIG_PM 6834911ccdbSMark Brown static int wm2000_suspend(struct snd_soc_codec *codec) 6843a66d387SMark Brown { 6854911ccdbSMark Brown struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev); 6863a66d387SMark Brown 6874911ccdbSMark Brown return wm2000_anc_transition(wm2000, ANC_OFF); 6883a66d387SMark Brown } 6893a66d387SMark Brown 6904911ccdbSMark Brown static int wm2000_resume(struct snd_soc_codec *codec) 6914911ccdbSMark Brown { 6924911ccdbSMark Brown struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev); 6933a66d387SMark Brown 6944911ccdbSMark Brown return wm2000_anc_set_mode(wm2000); 6953a66d387SMark Brown } 6964911ccdbSMark Brown #else 6974911ccdbSMark Brown #define wm2000_suspend NULL 6984911ccdbSMark Brown #define wm2000_resume NULL 6994911ccdbSMark Brown #endif 7003a66d387SMark Brown 70151cc7ed3SMark Brown static bool wm2000_readable_reg(struct device *dev, unsigned int reg) 70251cc7ed3SMark Brown { 70351cc7ed3SMark Brown switch (reg) { 70451cc7ed3SMark Brown case WM2000_REG_SYS_START: 70551cc7ed3SMark Brown case WM2000_REG_SPEECH_CLARITY: 70651cc7ed3SMark Brown case WM2000_REG_SYS_WATCHDOG: 70751cc7ed3SMark Brown case WM2000_REG_ANA_VMID_PD_TIME: 70851cc7ed3SMark Brown case WM2000_REG_ANA_VMID_PU_TIME: 70951cc7ed3SMark Brown case WM2000_REG_CAT_FLTR_INDX: 71051cc7ed3SMark Brown case WM2000_REG_CAT_GAIN_0: 71151cc7ed3SMark Brown case WM2000_REG_SYS_STATUS: 71251cc7ed3SMark Brown case WM2000_REG_SYS_MODE_CNTRL: 71351cc7ed3SMark Brown case WM2000_REG_SYS_START0: 71451cc7ed3SMark Brown case WM2000_REG_SYS_START1: 71551cc7ed3SMark Brown case WM2000_REG_ID1: 71651cc7ed3SMark Brown case WM2000_REG_ID2: 71751cc7ed3SMark Brown case WM2000_REG_REVISON: 71851cc7ed3SMark Brown case WM2000_REG_SYS_CTL1: 71951cc7ed3SMark Brown case WM2000_REG_SYS_CTL2: 72051cc7ed3SMark Brown case WM2000_REG_ANC_STAT: 72151cc7ed3SMark Brown case WM2000_REG_IF_CTL: 72251cc7ed3SMark Brown return true; 72351cc7ed3SMark Brown default: 72451cc7ed3SMark Brown return false; 72551cc7ed3SMark Brown } 72651cc7ed3SMark Brown } 72751cc7ed3SMark Brown 7288aa1fe81SMark Brown static const struct regmap_config wm2000_regmap = { 729d0e12f3fSMark Brown .reg_bits = 16, 7308aa1fe81SMark Brown .val_bits = 8, 73151cc7ed3SMark Brown 73251cc7ed3SMark Brown .max_register = WM2000_REG_IF_CTL, 73351cc7ed3SMark Brown .readable_reg = wm2000_readable_reg, 7348aa1fe81SMark Brown }; 7358aa1fe81SMark Brown 7364911ccdbSMark Brown static int wm2000_probe(struct snd_soc_codec *codec) 7374911ccdbSMark Brown { 7384911ccdbSMark Brown struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev); 7394911ccdbSMark Brown 7404911ccdbSMark Brown /* This will trigger a transition to standby mode by default */ 7414911ccdbSMark Brown wm2000_anc_set_mode(wm2000); 7424911ccdbSMark Brown 7434911ccdbSMark Brown return 0; 7444911ccdbSMark Brown } 7454911ccdbSMark Brown 7464911ccdbSMark Brown static int wm2000_remove(struct snd_soc_codec *codec) 7474911ccdbSMark Brown { 7484911ccdbSMark Brown struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev); 7494911ccdbSMark Brown 7504911ccdbSMark Brown return wm2000_anc_transition(wm2000, ANC_OFF); 7514911ccdbSMark Brown } 7524911ccdbSMark Brown 7534911ccdbSMark Brown static struct snd_soc_codec_driver soc_codec_dev_wm2000 = { 7544911ccdbSMark Brown .probe = wm2000_probe, 7554911ccdbSMark Brown .remove = wm2000_remove, 7564911ccdbSMark Brown .suspend = wm2000_suspend, 7574911ccdbSMark Brown .resume = wm2000_resume, 7584911ccdbSMark Brown 7594911ccdbSMark Brown .dapm_widgets = wm2000_dapm_widgets, 7604911ccdbSMark Brown .num_dapm_widgets = ARRAY_SIZE(wm2000_dapm_widgets), 7614911ccdbSMark Brown .dapm_routes = wm2000_audio_map, 7624911ccdbSMark Brown .num_dapm_routes = ARRAY_SIZE(wm2000_audio_map), 7634911ccdbSMark Brown .controls = wm2000_controls, 7644911ccdbSMark Brown .num_controls = ARRAY_SIZE(wm2000_controls), 7654911ccdbSMark Brown }; 7664911ccdbSMark Brown 7677a79e94eSBill Pemberton static int wm2000_i2c_probe(struct i2c_client *i2c, 7683a66d387SMark Brown const struct i2c_device_id *i2c_id) 7693a66d387SMark Brown { 7703a66d387SMark Brown struct wm2000_priv *wm2000; 7713a66d387SMark Brown struct wm2000_platform_data *pdata; 7723a66d387SMark Brown const char *filename; 773c83f1d7eSJesper Juhl const struct firmware *fw = NULL; 774a89be93cSMark Brown int ret, i; 775c83f1d7eSJesper Juhl int reg; 7763a66d387SMark Brown u16 id; 7773a66d387SMark Brown 778b03e96e4SMark Brown wm2000 = devm_kzalloc(&i2c->dev, sizeof(struct wm2000_priv), 779b03e96e4SMark Brown GFP_KERNEL); 7803a66d387SMark Brown if (wm2000 == NULL) { 7813a66d387SMark Brown dev_err(&i2c->dev, "Unable to allocate private data\n"); 7823a66d387SMark Brown return -ENOMEM; 7833a66d387SMark Brown } 7843a66d387SMark Brown 7858aa1fe81SMark Brown dev_set_drvdata(&i2c->dev, wm2000); 7868aa1fe81SMark Brown 7878fed54aeSMark Brown wm2000->regmap = devm_regmap_init_i2c(i2c, &wm2000_regmap); 7888aa1fe81SMark Brown if (IS_ERR(wm2000->regmap)) { 7898aa1fe81SMark Brown ret = PTR_ERR(wm2000->regmap); 7908aa1fe81SMark Brown dev_err(&i2c->dev, "Failed to allocate register map: %d\n", 7918aa1fe81SMark Brown ret); 792c83f1d7eSJesper Juhl goto out; 7938aa1fe81SMark Brown } 7948aa1fe81SMark Brown 795a89be93cSMark Brown for (i = 0; i < WM2000_NUM_SUPPLIES; i++) 796a89be93cSMark Brown wm2000->supplies[i].supply = wm2000_supplies[i]; 797a89be93cSMark Brown 798a89be93cSMark Brown ret = devm_regulator_bulk_get(&i2c->dev, WM2000_NUM_SUPPLIES, 799a89be93cSMark Brown wm2000->supplies); 800a89be93cSMark Brown if (ret != 0) { 801a89be93cSMark Brown dev_err(&i2c->dev, "Failed to get supplies: %d\n", ret); 802a89be93cSMark Brown return ret; 803a89be93cSMark Brown } 804a89be93cSMark Brown 805a89be93cSMark Brown ret = regulator_bulk_enable(WM2000_NUM_SUPPLIES, wm2000->supplies); 806a89be93cSMark Brown if (ret != 0) { 807a89be93cSMark Brown dev_err(&i2c->dev, "Failed to enable supplies: %d\n", ret); 808a89be93cSMark Brown return ret; 809a89be93cSMark Brown } 810a89be93cSMark Brown 8113a66d387SMark Brown /* Verify that this is a WM2000 */ 8123a66d387SMark Brown reg = wm2000_read(i2c, WM2000_REG_ID1); 8133a66d387SMark Brown id = reg << 8; 8143a66d387SMark Brown reg = wm2000_read(i2c, WM2000_REG_ID2); 8153a66d387SMark Brown id |= reg & 0xff; 8163a66d387SMark Brown 8173a66d387SMark Brown if (id != 0x2000) { 8183a66d387SMark Brown dev_err(&i2c->dev, "Device is not a WM2000 - ID %x\n", id); 8193a66d387SMark Brown ret = -ENODEV; 820a89be93cSMark Brown goto err_supplies; 8213a66d387SMark Brown } 8223a66d387SMark Brown 8233a66d387SMark Brown reg = wm2000_read(i2c, WM2000_REG_REVISON); 8243a66d387SMark Brown dev_info(&i2c->dev, "revision %c\n", reg + 'A'); 8253a66d387SMark Brown 8263a66d387SMark Brown filename = "wm2000_anc.bin"; 8273a66d387SMark Brown pdata = dev_get_platdata(&i2c->dev); 8283a66d387SMark Brown if (pdata) { 8293a66d387SMark Brown wm2000->mclk_div = pdata->mclkdiv2; 8303a66d387SMark Brown wm2000->speech_clarity = !pdata->speech_enh_disable; 8313a66d387SMark Brown 8323a66d387SMark Brown if (pdata->download_file) 8333a66d387SMark Brown filename = pdata->download_file; 8343a66d387SMark Brown } 8353a66d387SMark Brown 8363a66d387SMark Brown ret = request_firmware(&fw, filename, &i2c->dev); 8373a66d387SMark Brown if (ret != 0) { 8383a66d387SMark Brown dev_err(&i2c->dev, "Failed to acquire ANC data: %d\n", ret); 839a89be93cSMark Brown goto err_supplies; 8403a66d387SMark Brown } 8413a66d387SMark Brown 8423a66d387SMark Brown /* Pre-cook the concatenation of the register address onto the image */ 8433a66d387SMark Brown wm2000->anc_download_size = fw->size + 2; 844b03e96e4SMark Brown wm2000->anc_download = devm_kzalloc(&i2c->dev, 845b03e96e4SMark Brown wm2000->anc_download_size, 846b03e96e4SMark Brown GFP_KERNEL); 8473a66d387SMark Brown if (wm2000->anc_download == NULL) { 8483a66d387SMark Brown dev_err(&i2c->dev, "Out of memory\n"); 8493a66d387SMark Brown ret = -ENOMEM; 850a89be93cSMark Brown goto err_supplies; 8513a66d387SMark Brown } 8523a66d387SMark Brown 8533a66d387SMark Brown wm2000->anc_download[0] = 0x80; 8543a66d387SMark Brown wm2000->anc_download[1] = 0x00; 8553a66d387SMark Brown memcpy(wm2000->anc_download + 2, fw->data, fw->size); 8563a66d387SMark Brown 8573a66d387SMark Brown wm2000->anc_eng_ena = 1; 858e71fa370SMark Brown wm2000->anc_active = 1; 859e71fa370SMark Brown wm2000->spk_ena = 1; 8603a66d387SMark Brown wm2000->i2c = i2c; 8613a66d387SMark Brown 8623a66d387SMark Brown wm2000_reset(wm2000); 8633a66d387SMark Brown 864c83f1d7eSJesper Juhl ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_wm2000, NULL, 0); 8653a66d387SMark Brown 866a89be93cSMark Brown err_supplies: 867a89be93cSMark Brown regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies); 8683a66d387SMark Brown 869c83f1d7eSJesper Juhl out: 870c83f1d7eSJesper Juhl release_firmware(fw); 8713a66d387SMark Brown return ret; 8723a66d387SMark Brown } 8733a66d387SMark Brown 8747a79e94eSBill Pemberton static int wm2000_i2c_remove(struct i2c_client *i2c) 8753a66d387SMark Brown { 8764911ccdbSMark Brown snd_soc_unregister_codec(&i2c->dev); 8778aa1fe81SMark Brown 8783a66d387SMark Brown return 0; 8793a66d387SMark Brown } 8803a66d387SMark Brown 8813a66d387SMark Brown static const struct i2c_device_id wm2000_i2c_id[] = { 8823a66d387SMark Brown { "wm2000", 0 }, 8833a66d387SMark Brown { } 8843a66d387SMark Brown }; 8853a66d387SMark Brown MODULE_DEVICE_TABLE(i2c, wm2000_i2c_id); 8863a66d387SMark Brown 8873a66d387SMark Brown static struct i2c_driver wm2000_i2c_driver = { 8883a66d387SMark Brown .driver = { 8893a66d387SMark Brown .name = "wm2000", 8903a66d387SMark Brown .owner = THIS_MODULE, 8913a66d387SMark Brown }, 8923a66d387SMark Brown .probe = wm2000_i2c_probe, 8937a79e94eSBill Pemberton .remove = wm2000_i2c_remove, 8943a66d387SMark Brown .id_table = wm2000_i2c_id, 8953a66d387SMark Brown }; 8963a66d387SMark Brown 8973a4bfd88SSachin Kamat module_i2c_driver(wm2000_i2c_driver); 8983a66d387SMark Brown 8993a66d387SMark Brown MODULE_DESCRIPTION("ASoC WM2000 driver"); 9003a66d387SMark Brown MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfonmicro.com>"); 9013a66d387SMark Brown MODULE_LICENSE("GPL"); 902