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> 29514cfd6dSMark Brown #include <linux/clk.h> 303a66d387SMark Brown #include <linux/delay.h> 313a66d387SMark Brown #include <linux/pm.h> 323a66d387SMark Brown #include <linux/i2c.h> 338aa1fe81SMark Brown #include <linux/regmap.h> 343a66d387SMark Brown #include <linux/debugfs.h> 35a89be93cSMark Brown #include <linux/regulator/consumer.h> 365a0e3ad6STejun Heo #include <linux/slab.h> 373a66d387SMark Brown #include <sound/core.h> 383a66d387SMark Brown #include <sound/pcm.h> 393a66d387SMark Brown #include <sound/pcm_params.h> 403a66d387SMark Brown #include <sound/soc.h> 413a66d387SMark Brown #include <sound/initval.h> 423a66d387SMark Brown #include <sound/tlv.h> 433a66d387SMark Brown 443a66d387SMark Brown #include <sound/wm2000.h> 453a66d387SMark Brown 463a66d387SMark Brown #include "wm2000.h" 473a66d387SMark Brown 48a89be93cSMark Brown #define WM2000_NUM_SUPPLIES 3 49a89be93cSMark Brown 50a89be93cSMark Brown static const char *wm2000_supplies[WM2000_NUM_SUPPLIES] = { 51a89be93cSMark Brown "SPKVDD", 52a89be93cSMark Brown "DBVDD", 53a89be93cSMark Brown "DCVDD", 54a89be93cSMark Brown }; 55a89be93cSMark Brown 563a66d387SMark Brown enum wm2000_anc_mode { 573a66d387SMark Brown ANC_ACTIVE = 0, 583a66d387SMark Brown ANC_BYPASS = 1, 593a66d387SMark Brown ANC_STANDBY = 2, 603a66d387SMark Brown ANC_OFF = 3, 613a66d387SMark Brown }; 623a66d387SMark Brown 633a66d387SMark Brown struct wm2000_priv { 643a66d387SMark Brown struct i2c_client *i2c; 658aa1fe81SMark Brown struct regmap *regmap; 66514cfd6dSMark Brown struct clk *mclk; 673a66d387SMark Brown 68a89be93cSMark Brown struct regulator_bulk_data supplies[WM2000_NUM_SUPPLIES]; 69a89be93cSMark Brown 703a66d387SMark Brown enum wm2000_anc_mode anc_mode; 713a66d387SMark Brown 723a66d387SMark Brown unsigned int anc_active:1; 733a66d387SMark Brown unsigned int anc_eng_ena:1; 743a66d387SMark Brown unsigned int spk_ena:1; 753a66d387SMark Brown 763a66d387SMark Brown unsigned int mclk_div:1; 773a66d387SMark Brown unsigned int speech_clarity:1; 783a66d387SMark Brown 793a66d387SMark Brown int anc_download_size; 803a66d387SMark Brown char *anc_download; 813a66d387SMark Brown }; 823a66d387SMark Brown 833a66d387SMark Brown static int wm2000_write(struct i2c_client *i2c, unsigned int reg, 843a66d387SMark Brown unsigned int value) 853a66d387SMark Brown { 868aa1fe81SMark Brown struct wm2000_priv *wm2000 = i2c_get_clientdata(i2c); 878aa1fe81SMark Brown return regmap_write(wm2000->regmap, reg, value); 883a66d387SMark Brown } 893a66d387SMark Brown 903a66d387SMark Brown static unsigned int wm2000_read(struct i2c_client *i2c, unsigned int r) 913a66d387SMark Brown { 928aa1fe81SMark Brown struct wm2000_priv *wm2000 = i2c_get_clientdata(i2c); 938aa1fe81SMark Brown unsigned int val; 943a66d387SMark Brown int ret; 953a66d387SMark Brown 968aa1fe81SMark Brown ret = regmap_read(wm2000->regmap, r, &val); 978aa1fe81SMark Brown if (ret < 0) 988aa1fe81SMark Brown return -1; 993a66d387SMark Brown 1008aa1fe81SMark Brown return val; 1013a66d387SMark Brown } 1023a66d387SMark Brown 1033a66d387SMark Brown static void wm2000_reset(struct wm2000_priv *wm2000) 1043a66d387SMark Brown { 1053a66d387SMark Brown struct i2c_client *i2c = wm2000->i2c; 1063a66d387SMark Brown 1073a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_ENG_CLR); 1083a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_RAM_CLR); 1093a66d387SMark Brown wm2000_write(i2c, WM2000_REG_ID1, 0); 1103a66d387SMark Brown 1113a66d387SMark Brown wm2000->anc_mode = ANC_OFF; 1123a66d387SMark Brown } 1133a66d387SMark Brown 1143a66d387SMark Brown static int wm2000_poll_bit(struct i2c_client *i2c, 1153ff1ec27SMark Brown unsigned int reg, u8 mask) 1163a66d387SMark Brown { 1173ff1ec27SMark Brown int timeout = 4000; 1183a66d387SMark Brown int val; 1193a66d387SMark Brown 1203a66d387SMark Brown val = wm2000_read(i2c, reg); 1213a66d387SMark Brown 1223a66d387SMark Brown while (!(val & mask) && --timeout) { 1233a66d387SMark Brown msleep(1); 1243a66d387SMark Brown val = wm2000_read(i2c, reg); 1253a66d387SMark Brown } 1263a66d387SMark Brown 1273a66d387SMark Brown if (timeout == 0) 1283a66d387SMark Brown return 0; 1293a66d387SMark Brown else 1303a66d387SMark Brown return 1; 1313a66d387SMark Brown } 1323a66d387SMark Brown 1333a66d387SMark Brown static int wm2000_power_up(struct i2c_client *i2c, int analogue) 1343a66d387SMark Brown { 1353a66d387SMark Brown struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev); 1363ff1ec27SMark Brown int ret; 1373a66d387SMark Brown 1383a66d387SMark Brown BUG_ON(wm2000->anc_mode != ANC_OFF); 1393a66d387SMark Brown 1403a66d387SMark Brown dev_dbg(&i2c->dev, "Beginning power up\n"); 1413a66d387SMark Brown 142a89be93cSMark Brown ret = regulator_bulk_enable(WM2000_NUM_SUPPLIES, wm2000->supplies); 143a89be93cSMark Brown if (ret != 0) { 144a89be93cSMark Brown dev_err(&i2c->dev, "Failed to enable supplies: %d\n", ret); 145a89be93cSMark Brown return ret; 146a89be93cSMark Brown } 147a89be93cSMark Brown 1483a66d387SMark Brown if (!wm2000->mclk_div) { 1493a66d387SMark Brown dev_dbg(&i2c->dev, "Disabling MCLK divider\n"); 1503a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_CTL2, 1513a66d387SMark Brown WM2000_MCLK_DIV2_ENA_CLR); 1523a66d387SMark Brown } else { 1533a66d387SMark Brown dev_dbg(&i2c->dev, "Enabling MCLK divider\n"); 1543a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_CTL2, 1553a66d387SMark Brown WM2000_MCLK_DIV2_ENA_SET); 1563a66d387SMark Brown } 1573a66d387SMark Brown 1583a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_ENG_CLR); 1593a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_ENG_SET); 1603a66d387SMark Brown 1613a66d387SMark Brown /* Wait for ANC engine to become ready */ 1623a66d387SMark Brown if (!wm2000_poll_bit(i2c, WM2000_REG_ANC_STAT, 1633ff1ec27SMark Brown WM2000_ANC_ENG_IDLE)) { 1643a66d387SMark Brown dev_err(&i2c->dev, "ANC engine failed to reset\n"); 165a89be93cSMark Brown regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies); 1663a66d387SMark Brown return -ETIMEDOUT; 1673a66d387SMark Brown } 1683a66d387SMark Brown 1693a66d387SMark Brown if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS, 1703ff1ec27SMark Brown WM2000_STATUS_BOOT_COMPLETE)) { 1713a66d387SMark Brown dev_err(&i2c->dev, "ANC engine failed to initialise\n"); 172a89be93cSMark Brown regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies); 1733a66d387SMark Brown return -ETIMEDOUT; 1743a66d387SMark Brown } 1753a66d387SMark Brown 1763a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_RAM_SET); 1773a66d387SMark Brown 1783a66d387SMark Brown /* Open code download of the data since it is the only bulk 1793a66d387SMark Brown * write we do. */ 1803a66d387SMark Brown dev_dbg(&i2c->dev, "Downloading %d bytes\n", 1813a66d387SMark Brown wm2000->anc_download_size - 2); 1823a66d387SMark Brown 1833a66d387SMark Brown ret = i2c_master_send(i2c, wm2000->anc_download, 1843a66d387SMark Brown wm2000->anc_download_size); 1853a66d387SMark Brown if (ret < 0) { 1863a66d387SMark Brown dev_err(&i2c->dev, "i2c_transfer() failed: %d\n", ret); 187a89be93cSMark Brown regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies); 1883a66d387SMark Brown return ret; 1893a66d387SMark Brown } 1903a66d387SMark Brown if (ret != wm2000->anc_download_size) { 1913a66d387SMark Brown dev_err(&i2c->dev, "i2c_transfer() failed, %d != %d\n", 1923a66d387SMark Brown ret, wm2000->anc_download_size); 193a89be93cSMark Brown regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies); 1943a66d387SMark Brown return -EIO; 1953a66d387SMark Brown } 1963a66d387SMark Brown 1973a66d387SMark Brown dev_dbg(&i2c->dev, "Download complete\n"); 1983a66d387SMark Brown 1993a66d387SMark Brown if (analogue) { 2003ff1ec27SMark Brown wm2000_write(i2c, WM2000_REG_ANA_VMID_PU_TIME, 248 / 4); 2013a66d387SMark Brown 2023a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL, 2033a66d387SMark Brown WM2000_MODE_ANA_SEQ_INCLUDE | 2043a66d387SMark Brown WM2000_MODE_MOUSE_ENABLE | 2053a66d387SMark Brown WM2000_MODE_THERMAL_ENABLE); 2063a66d387SMark Brown } else { 2073a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL, 2083a66d387SMark Brown WM2000_MODE_MOUSE_ENABLE | 2093a66d387SMark Brown WM2000_MODE_THERMAL_ENABLE); 2103a66d387SMark Brown } 2113a66d387SMark Brown 2123a66d387SMark Brown ret = wm2000_read(i2c, WM2000_REG_SPEECH_CLARITY); 2133a66d387SMark Brown if (wm2000->speech_clarity) 2143a66d387SMark Brown ret &= ~WM2000_SPEECH_CLARITY; 2153a66d387SMark Brown else 2163a66d387SMark Brown ret |= WM2000_SPEECH_CLARITY; 2173a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SPEECH_CLARITY, ret); 2183a66d387SMark Brown 2193a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_START0, 0x33); 2203a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_START1, 0x02); 2213a66d387SMark Brown 2223a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_INT_N_CLR); 2233a66d387SMark Brown 2243a66d387SMark Brown if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS, 2253ff1ec27SMark Brown WM2000_STATUS_MOUSE_ACTIVE)) { 2263ff1ec27SMark Brown dev_err(&i2c->dev, "Timed out waiting for device\n"); 227a89be93cSMark Brown regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies); 2283a66d387SMark Brown return -ETIMEDOUT; 2293a66d387SMark Brown } 2303a66d387SMark Brown 2313a66d387SMark Brown dev_dbg(&i2c->dev, "ANC active\n"); 2323a66d387SMark Brown if (analogue) 2333a66d387SMark Brown dev_dbg(&i2c->dev, "Analogue active\n"); 2343a66d387SMark Brown wm2000->anc_mode = ANC_ACTIVE; 2353a66d387SMark Brown 2363a66d387SMark Brown return 0; 2373a66d387SMark Brown } 2383a66d387SMark Brown 2393a66d387SMark Brown static int wm2000_power_down(struct i2c_client *i2c, int analogue) 2403a66d387SMark Brown { 2413a66d387SMark Brown struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev); 2423a66d387SMark Brown 2433a66d387SMark Brown if (analogue) { 2443ff1ec27SMark Brown wm2000_write(i2c, WM2000_REG_ANA_VMID_PD_TIME, 248 / 4); 2453a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL, 2463a66d387SMark Brown WM2000_MODE_ANA_SEQ_INCLUDE | 2473a66d387SMark Brown WM2000_MODE_POWER_DOWN); 2483a66d387SMark Brown } else { 2493a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL, 2503a66d387SMark Brown WM2000_MODE_POWER_DOWN); 2513a66d387SMark Brown } 2523a66d387SMark Brown 2533a66d387SMark Brown if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS, 2543ff1ec27SMark Brown WM2000_STATUS_POWER_DOWN_COMPLETE)) { 2553a66d387SMark Brown dev_err(&i2c->dev, "Timeout waiting for ANC power down\n"); 2563a66d387SMark Brown return -ETIMEDOUT; 2573a66d387SMark Brown } 2583a66d387SMark Brown 2593a66d387SMark Brown if (!wm2000_poll_bit(i2c, WM2000_REG_ANC_STAT, 2603ff1ec27SMark Brown WM2000_ANC_ENG_IDLE)) { 2613a66d387SMark Brown dev_err(&i2c->dev, "Timeout waiting for ANC engine idle\n"); 2623a66d387SMark Brown return -ETIMEDOUT; 2633a66d387SMark Brown } 2643a66d387SMark Brown 265a89be93cSMark Brown regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies); 266a89be93cSMark Brown 2673a66d387SMark Brown dev_dbg(&i2c->dev, "powered off\n"); 2683a66d387SMark Brown wm2000->anc_mode = ANC_OFF; 2693a66d387SMark Brown 2703a66d387SMark Brown return 0; 2713a66d387SMark Brown } 2723a66d387SMark Brown 2733a66d387SMark Brown static int wm2000_enter_bypass(struct i2c_client *i2c, int analogue) 2743a66d387SMark Brown { 2753a66d387SMark Brown struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev); 2763a66d387SMark Brown 2773a66d387SMark Brown BUG_ON(wm2000->anc_mode != ANC_ACTIVE); 2783a66d387SMark Brown 2793a66d387SMark Brown if (analogue) { 2803a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL, 2813a66d387SMark Brown WM2000_MODE_ANA_SEQ_INCLUDE | 2823a66d387SMark Brown WM2000_MODE_THERMAL_ENABLE | 2833a66d387SMark Brown WM2000_MODE_BYPASS_ENTRY); 2843a66d387SMark Brown } else { 2853a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL, 2863a66d387SMark Brown WM2000_MODE_THERMAL_ENABLE | 2873a66d387SMark Brown WM2000_MODE_BYPASS_ENTRY); 2883a66d387SMark Brown } 2893a66d387SMark Brown 2903a66d387SMark Brown if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS, 2913ff1ec27SMark Brown WM2000_STATUS_ANC_DISABLED)) { 2923a66d387SMark Brown dev_err(&i2c->dev, "Timeout waiting for ANC disable\n"); 2933a66d387SMark Brown return -ETIMEDOUT; 2943a66d387SMark Brown } 2953a66d387SMark Brown 2963a66d387SMark Brown if (!wm2000_poll_bit(i2c, WM2000_REG_ANC_STAT, 2973ff1ec27SMark Brown WM2000_ANC_ENG_IDLE)) { 2983a66d387SMark Brown dev_err(&i2c->dev, "Timeout waiting for ANC engine idle\n"); 2993a66d387SMark Brown return -ETIMEDOUT; 3003a66d387SMark Brown } 3013a66d387SMark Brown 3023a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_CTL1, WM2000_SYS_STBY); 3033a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_RAM_CLR); 3043a66d387SMark Brown 3053a66d387SMark Brown wm2000->anc_mode = ANC_BYPASS; 3063a66d387SMark Brown dev_dbg(&i2c->dev, "bypass enabled\n"); 3073a66d387SMark Brown 3083a66d387SMark Brown return 0; 3093a66d387SMark Brown } 3103a66d387SMark Brown 3113a66d387SMark Brown static int wm2000_exit_bypass(struct i2c_client *i2c, int analogue) 3123a66d387SMark Brown { 3133a66d387SMark Brown struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev); 3143a66d387SMark Brown 3153a66d387SMark Brown BUG_ON(wm2000->anc_mode != ANC_BYPASS); 3163a66d387SMark Brown 3173a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_CTL1, 0); 3183a66d387SMark Brown 3193a66d387SMark Brown if (analogue) { 3203a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL, 3213a66d387SMark Brown WM2000_MODE_ANA_SEQ_INCLUDE | 3223a66d387SMark Brown WM2000_MODE_MOUSE_ENABLE | 3233a66d387SMark Brown WM2000_MODE_THERMAL_ENABLE); 3243a66d387SMark Brown } else { 3253a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL, 3263a66d387SMark Brown WM2000_MODE_MOUSE_ENABLE | 3273a66d387SMark Brown WM2000_MODE_THERMAL_ENABLE); 3283a66d387SMark Brown } 3293a66d387SMark Brown 3303a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_RAM_SET); 3313a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_INT_N_CLR); 3323a66d387SMark Brown 3333a66d387SMark Brown if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS, 3343ff1ec27SMark Brown WM2000_STATUS_MOUSE_ACTIVE)) { 3353a66d387SMark Brown dev_err(&i2c->dev, "Timed out waiting for MOUSE\n"); 3363a66d387SMark Brown return -ETIMEDOUT; 3373a66d387SMark Brown } 3383a66d387SMark Brown 3393a66d387SMark Brown wm2000->anc_mode = ANC_ACTIVE; 3403a66d387SMark Brown dev_dbg(&i2c->dev, "MOUSE active\n"); 3413a66d387SMark Brown 3423a66d387SMark Brown return 0; 3433a66d387SMark Brown } 3443a66d387SMark Brown 3453a66d387SMark Brown static int wm2000_enter_standby(struct i2c_client *i2c, int analogue) 3463a66d387SMark Brown { 3473a66d387SMark Brown struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev); 3483a66d387SMark Brown 3493a66d387SMark Brown BUG_ON(wm2000->anc_mode != ANC_ACTIVE); 3503a66d387SMark Brown 3513a66d387SMark Brown if (analogue) { 3523ff1ec27SMark Brown wm2000_write(i2c, WM2000_REG_ANA_VMID_PD_TIME, 248 / 4); 3533a66d387SMark Brown 3543a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL, 3553a66d387SMark Brown WM2000_MODE_ANA_SEQ_INCLUDE | 3563a66d387SMark Brown WM2000_MODE_THERMAL_ENABLE | 3573a66d387SMark Brown WM2000_MODE_STANDBY_ENTRY); 3583a66d387SMark Brown } else { 3593a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL, 3603a66d387SMark Brown WM2000_MODE_THERMAL_ENABLE | 3613a66d387SMark Brown WM2000_MODE_STANDBY_ENTRY); 3623a66d387SMark Brown } 3633a66d387SMark Brown 3643a66d387SMark Brown if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS, 3653ff1ec27SMark Brown WM2000_STATUS_ANC_DISABLED)) { 3663a66d387SMark Brown dev_err(&i2c->dev, 3673a66d387SMark Brown "Timed out waiting for ANC disable after 1ms\n"); 3683a66d387SMark Brown return -ETIMEDOUT; 3693a66d387SMark Brown } 3703a66d387SMark Brown 3713ff1ec27SMark Brown if (!wm2000_poll_bit(i2c, WM2000_REG_ANC_STAT, WM2000_ANC_ENG_IDLE)) { 3723a66d387SMark Brown dev_err(&i2c->dev, 3733ff1ec27SMark Brown "Timed out waiting for standby\n"); 3743a66d387SMark Brown return -ETIMEDOUT; 3753a66d387SMark Brown } 3763a66d387SMark Brown 3773a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_CTL1, WM2000_SYS_STBY); 3783a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_RAM_CLR); 3793a66d387SMark Brown 3803a66d387SMark Brown wm2000->anc_mode = ANC_STANDBY; 3813a66d387SMark Brown dev_dbg(&i2c->dev, "standby\n"); 3823a66d387SMark Brown if (analogue) 3833a66d387SMark Brown dev_dbg(&i2c->dev, "Analogue disabled\n"); 3843a66d387SMark Brown 3853a66d387SMark Brown return 0; 3863a66d387SMark Brown } 3873a66d387SMark Brown 3883a66d387SMark Brown static int wm2000_exit_standby(struct i2c_client *i2c, int analogue) 3893a66d387SMark Brown { 3903a66d387SMark Brown struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev); 3913a66d387SMark Brown 3923a66d387SMark Brown BUG_ON(wm2000->anc_mode != ANC_STANDBY); 3933a66d387SMark Brown 3943a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_CTL1, 0); 3953a66d387SMark Brown 3963a66d387SMark Brown if (analogue) { 3973ff1ec27SMark Brown wm2000_write(i2c, WM2000_REG_ANA_VMID_PU_TIME, 248 / 4); 3983a66d387SMark Brown 3993a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL, 4003a66d387SMark Brown WM2000_MODE_ANA_SEQ_INCLUDE | 4013a66d387SMark Brown WM2000_MODE_THERMAL_ENABLE | 4023a66d387SMark Brown WM2000_MODE_MOUSE_ENABLE); 4033a66d387SMark Brown } else { 4043a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL, 4053a66d387SMark Brown WM2000_MODE_THERMAL_ENABLE | 4063a66d387SMark Brown WM2000_MODE_MOUSE_ENABLE); 4073a66d387SMark Brown } 4083a66d387SMark Brown 4093a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_RAM_SET); 4103a66d387SMark Brown wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_INT_N_CLR); 4113a66d387SMark Brown 4123a66d387SMark Brown if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS, 4133ff1ec27SMark Brown WM2000_STATUS_MOUSE_ACTIVE)) { 4143ff1ec27SMark Brown dev_err(&i2c->dev, "Timed out waiting for MOUSE\n"); 4153a66d387SMark Brown return -ETIMEDOUT; 4163a66d387SMark Brown } 4173a66d387SMark Brown 4183a66d387SMark Brown wm2000->anc_mode = ANC_ACTIVE; 4193a66d387SMark Brown dev_dbg(&i2c->dev, "MOUSE active\n"); 4203a66d387SMark Brown if (analogue) 4213a66d387SMark Brown dev_dbg(&i2c->dev, "Analogue enabled\n"); 4223a66d387SMark Brown 4233a66d387SMark Brown return 0; 4243a66d387SMark Brown } 4253a66d387SMark Brown 4263a66d387SMark Brown typedef int (*wm2000_mode_fn)(struct i2c_client *i2c, int analogue); 4273a66d387SMark Brown 4283a66d387SMark Brown static struct { 4293a66d387SMark Brown enum wm2000_anc_mode source; 4303a66d387SMark Brown enum wm2000_anc_mode dest; 4313a66d387SMark Brown int analogue; 4323a66d387SMark Brown wm2000_mode_fn step[2]; 4333a66d387SMark Brown } anc_transitions[] = { 4343a66d387SMark Brown { 4353a66d387SMark Brown .source = ANC_OFF, 4363a66d387SMark Brown .dest = ANC_ACTIVE, 4373a66d387SMark Brown .analogue = 1, 4383a66d387SMark Brown .step = { 4393a66d387SMark Brown wm2000_power_up, 4403a66d387SMark Brown }, 4413a66d387SMark Brown }, 4423a66d387SMark Brown { 4433a66d387SMark Brown .source = ANC_OFF, 4443a66d387SMark Brown .dest = ANC_STANDBY, 4453a66d387SMark Brown .step = { 4463a66d387SMark Brown wm2000_power_up, 4473a66d387SMark Brown wm2000_enter_standby, 4483a66d387SMark Brown }, 4493a66d387SMark Brown }, 4503a66d387SMark Brown { 4513a66d387SMark Brown .source = ANC_OFF, 4523a66d387SMark Brown .dest = ANC_BYPASS, 4533a66d387SMark Brown .analogue = 1, 4543a66d387SMark Brown .step = { 4553a66d387SMark Brown wm2000_power_up, 4563a66d387SMark Brown wm2000_enter_bypass, 4573a66d387SMark Brown }, 4583a66d387SMark Brown }, 4593a66d387SMark Brown { 4603a66d387SMark Brown .source = ANC_ACTIVE, 4613a66d387SMark Brown .dest = ANC_BYPASS, 4623a66d387SMark Brown .analogue = 1, 4633a66d387SMark Brown .step = { 4643a66d387SMark Brown wm2000_enter_bypass, 4653a66d387SMark Brown }, 4663a66d387SMark Brown }, 4673a66d387SMark Brown { 4683a66d387SMark Brown .source = ANC_ACTIVE, 4693a66d387SMark Brown .dest = ANC_STANDBY, 4703a66d387SMark Brown .analogue = 1, 4713a66d387SMark Brown .step = { 4723a66d387SMark Brown wm2000_enter_standby, 4733a66d387SMark Brown }, 4743a66d387SMark Brown }, 4753a66d387SMark Brown { 4763a66d387SMark Brown .source = ANC_ACTIVE, 4773a66d387SMark Brown .dest = ANC_OFF, 4783a66d387SMark Brown .analogue = 1, 4793a66d387SMark Brown .step = { 4803a66d387SMark Brown wm2000_power_down, 4813a66d387SMark Brown }, 4823a66d387SMark Brown }, 4833a66d387SMark Brown { 4843a66d387SMark Brown .source = ANC_BYPASS, 4853a66d387SMark Brown .dest = ANC_ACTIVE, 4863a66d387SMark Brown .analogue = 1, 4873a66d387SMark Brown .step = { 4883a66d387SMark Brown wm2000_exit_bypass, 4893a66d387SMark Brown }, 4903a66d387SMark Brown }, 4913a66d387SMark Brown { 4923a66d387SMark Brown .source = ANC_BYPASS, 4933a66d387SMark Brown .dest = ANC_STANDBY, 4943a66d387SMark Brown .analogue = 1, 4953a66d387SMark Brown .step = { 4963a66d387SMark Brown wm2000_exit_bypass, 4973a66d387SMark Brown wm2000_enter_standby, 4983a66d387SMark Brown }, 4993a66d387SMark Brown }, 5003a66d387SMark Brown { 5013a66d387SMark Brown .source = ANC_BYPASS, 5023a66d387SMark Brown .dest = ANC_OFF, 5033a66d387SMark Brown .step = { 5043a66d387SMark Brown wm2000_exit_bypass, 5053a66d387SMark Brown wm2000_power_down, 5063a66d387SMark Brown }, 5073a66d387SMark Brown }, 5083a66d387SMark Brown { 5093a66d387SMark Brown .source = ANC_STANDBY, 5103a66d387SMark Brown .dest = ANC_ACTIVE, 5113a66d387SMark Brown .analogue = 1, 5123a66d387SMark Brown .step = { 5133a66d387SMark Brown wm2000_exit_standby, 5143a66d387SMark Brown }, 5153a66d387SMark Brown }, 5163a66d387SMark Brown { 5173a66d387SMark Brown .source = ANC_STANDBY, 5183a66d387SMark Brown .dest = ANC_BYPASS, 5193a66d387SMark Brown .analogue = 1, 5203a66d387SMark Brown .step = { 5213a66d387SMark Brown wm2000_exit_standby, 5223a66d387SMark Brown wm2000_enter_bypass, 5233a66d387SMark Brown }, 5243a66d387SMark Brown }, 5253a66d387SMark Brown { 5263a66d387SMark Brown .source = ANC_STANDBY, 5273a66d387SMark Brown .dest = ANC_OFF, 5283a66d387SMark Brown .step = { 5293a66d387SMark Brown wm2000_exit_standby, 5303a66d387SMark Brown wm2000_power_down, 5313a66d387SMark Brown }, 5323a66d387SMark Brown }, 5333a66d387SMark Brown }; 5343a66d387SMark Brown 5353a66d387SMark Brown static int wm2000_anc_transition(struct wm2000_priv *wm2000, 5363a66d387SMark Brown enum wm2000_anc_mode mode) 5373a66d387SMark Brown { 5383a66d387SMark Brown struct i2c_client *i2c = wm2000->i2c; 5393a66d387SMark Brown int i, j; 5403a66d387SMark Brown int ret; 5413a66d387SMark Brown 5423a66d387SMark Brown if (wm2000->anc_mode == mode) 5433a66d387SMark Brown return 0; 5443a66d387SMark Brown 5453a66d387SMark Brown for (i = 0; i < ARRAY_SIZE(anc_transitions); i++) 5463a66d387SMark Brown if (anc_transitions[i].source == wm2000->anc_mode && 5473a66d387SMark Brown anc_transitions[i].dest == mode) 5483a66d387SMark Brown break; 5493a66d387SMark Brown if (i == ARRAY_SIZE(anc_transitions)) { 5503a66d387SMark Brown dev_err(&i2c->dev, "No transition for %d->%d\n", 5513a66d387SMark Brown wm2000->anc_mode, mode); 5523a66d387SMark Brown return -EINVAL; 5533a66d387SMark Brown } 5543a66d387SMark Brown 555514cfd6dSMark Brown /* Maintain clock while active */ 556514cfd6dSMark Brown if (anc_transitions[i].source == ANC_OFF) { 557514cfd6dSMark Brown ret = clk_prepare_enable(wm2000->mclk); 558514cfd6dSMark Brown if (ret != 0) { 559514cfd6dSMark Brown dev_err(&i2c->dev, "Failed to enable MCLK: %d\n", ret); 560514cfd6dSMark Brown return ret; 561514cfd6dSMark Brown } 562514cfd6dSMark Brown } 563514cfd6dSMark Brown 5643a66d387SMark Brown for (j = 0; j < ARRAY_SIZE(anc_transitions[j].step); j++) { 5653a66d387SMark Brown if (!anc_transitions[i].step[j]) 5663a66d387SMark Brown break; 5673a66d387SMark Brown ret = anc_transitions[i].step[j](i2c, 5683a66d387SMark Brown anc_transitions[i].analogue); 5693a66d387SMark Brown if (ret != 0) 5703a66d387SMark Brown return ret; 5713a66d387SMark Brown } 5723a66d387SMark Brown 573514cfd6dSMark Brown if (anc_transitions[i].dest == ANC_OFF) 574514cfd6dSMark Brown clk_disable_unprepare(wm2000->mclk); 575514cfd6dSMark Brown 576514cfd6dSMark Brown return ret; 5773a66d387SMark Brown } 5783a66d387SMark Brown 5793a66d387SMark Brown static int wm2000_anc_set_mode(struct wm2000_priv *wm2000) 5803a66d387SMark Brown { 5813a66d387SMark Brown struct i2c_client *i2c = wm2000->i2c; 5823a66d387SMark Brown enum wm2000_anc_mode mode; 5833a66d387SMark Brown 5843a66d387SMark Brown if (wm2000->anc_eng_ena && wm2000->spk_ena) 5853a66d387SMark Brown if (wm2000->anc_active) 5863a66d387SMark Brown mode = ANC_ACTIVE; 5873a66d387SMark Brown else 5883a66d387SMark Brown mode = ANC_BYPASS; 5893a66d387SMark Brown else 5903a66d387SMark Brown mode = ANC_STANDBY; 5913a66d387SMark Brown 5923a66d387SMark Brown dev_dbg(&i2c->dev, "Set mode %d (enabled %d, mute %d, active %d)\n", 5933a66d387SMark Brown mode, wm2000->anc_eng_ena, !wm2000->spk_ena, 5943a66d387SMark Brown wm2000->anc_active); 5953a66d387SMark Brown 5963a66d387SMark Brown return wm2000_anc_transition(wm2000, mode); 5973a66d387SMark Brown } 5983a66d387SMark Brown 5993a66d387SMark Brown static int wm2000_anc_mode_get(struct snd_kcontrol *kcontrol, 6003a66d387SMark Brown struct snd_ctl_elem_value *ucontrol) 6013a66d387SMark Brown { 6024911ccdbSMark Brown struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); 6034911ccdbSMark Brown struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev); 6043a66d387SMark Brown 6053a66d387SMark Brown ucontrol->value.enumerated.item[0] = wm2000->anc_active; 6063a66d387SMark Brown 6073a66d387SMark Brown return 0; 6083a66d387SMark Brown } 6093a66d387SMark Brown 6103a66d387SMark Brown static int wm2000_anc_mode_put(struct snd_kcontrol *kcontrol, 6113a66d387SMark Brown struct snd_ctl_elem_value *ucontrol) 6123a66d387SMark Brown { 6134911ccdbSMark Brown struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); 6144911ccdbSMark Brown struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev); 6153a66d387SMark Brown int anc_active = ucontrol->value.enumerated.item[0]; 6163a66d387SMark Brown 6173a66d387SMark Brown if (anc_active > 1) 6183a66d387SMark Brown return -EINVAL; 6193a66d387SMark Brown 6203a66d387SMark Brown wm2000->anc_active = anc_active; 6213a66d387SMark Brown 6223a66d387SMark Brown return wm2000_anc_set_mode(wm2000); 6233a66d387SMark Brown } 6243a66d387SMark Brown 6253a66d387SMark Brown static int wm2000_speaker_get(struct snd_kcontrol *kcontrol, 6263a66d387SMark Brown struct snd_ctl_elem_value *ucontrol) 6273a66d387SMark Brown { 6284911ccdbSMark Brown struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); 6294911ccdbSMark Brown struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev); 6303a66d387SMark Brown 6313a66d387SMark Brown ucontrol->value.enumerated.item[0] = wm2000->spk_ena; 6323a66d387SMark Brown 6333a66d387SMark Brown return 0; 6343a66d387SMark Brown } 6353a66d387SMark Brown 6363a66d387SMark Brown static int wm2000_speaker_put(struct snd_kcontrol *kcontrol, 6373a66d387SMark Brown struct snd_ctl_elem_value *ucontrol) 6383a66d387SMark Brown { 6394911ccdbSMark Brown struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); 6404911ccdbSMark Brown struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev); 6413a66d387SMark Brown int val = ucontrol->value.enumerated.item[0]; 6423a66d387SMark Brown 6433a66d387SMark Brown if (val > 1) 6443a66d387SMark Brown return -EINVAL; 6453a66d387SMark Brown 6463a66d387SMark Brown wm2000->spk_ena = val; 6473a66d387SMark Brown 6483a66d387SMark Brown return wm2000_anc_set_mode(wm2000); 6493a66d387SMark Brown } 6503a66d387SMark Brown 6513a66d387SMark Brown static const struct snd_kcontrol_new wm2000_controls[] = { 6523a66d387SMark Brown SOC_SINGLE_BOOL_EXT("WM2000 ANC Switch", 0, 6533a66d387SMark Brown wm2000_anc_mode_get, 6543a66d387SMark Brown wm2000_anc_mode_put), 6553a66d387SMark Brown SOC_SINGLE_BOOL_EXT("WM2000 Switch", 0, 6563a66d387SMark Brown wm2000_speaker_get, 6573a66d387SMark Brown wm2000_speaker_put), 6583a66d387SMark Brown }; 6593a66d387SMark Brown 6603a66d387SMark Brown static int wm2000_anc_power_event(struct snd_soc_dapm_widget *w, 6613a66d387SMark Brown struct snd_kcontrol *kcontrol, int event) 6623a66d387SMark Brown { 663a5ccea22SMark Brown struct snd_soc_codec *codec = w->codec; 6644911ccdbSMark Brown struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev); 6653a66d387SMark Brown 6663a66d387SMark Brown if (SND_SOC_DAPM_EVENT_ON(event)) 6673a66d387SMark Brown wm2000->anc_eng_ena = 1; 6683a66d387SMark Brown 6693a66d387SMark Brown if (SND_SOC_DAPM_EVENT_OFF(event)) 6703a66d387SMark Brown wm2000->anc_eng_ena = 0; 6713a66d387SMark Brown 6723a66d387SMark Brown return wm2000_anc_set_mode(wm2000); 6733a66d387SMark Brown } 6743a66d387SMark Brown 6753a66d387SMark Brown static const struct snd_soc_dapm_widget wm2000_dapm_widgets[] = { 6763a66d387SMark Brown /* Externally visible pins */ 6774911ccdbSMark Brown SND_SOC_DAPM_OUTPUT("SPKN"), 6784911ccdbSMark Brown SND_SOC_DAPM_OUTPUT("SPKP"), 6793a66d387SMark Brown 6804911ccdbSMark Brown SND_SOC_DAPM_INPUT("LINN"), 6814911ccdbSMark Brown SND_SOC_DAPM_INPUT("LINP"), 6823a66d387SMark Brown 6833a66d387SMark Brown SND_SOC_DAPM_PGA_E("ANC Engine", SND_SOC_NOPM, 0, 0, NULL, 0, 6843a66d387SMark Brown wm2000_anc_power_event, 6853a66d387SMark Brown SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), 6863a66d387SMark Brown }; 6873a66d387SMark Brown 6883a66d387SMark Brown /* Target, Path, Source */ 6894911ccdbSMark Brown static const struct snd_soc_dapm_route wm2000_audio_map[] = { 6904911ccdbSMark Brown { "SPKN", NULL, "ANC Engine" }, 6914911ccdbSMark Brown { "SPKP", NULL, "ANC Engine" }, 6924911ccdbSMark Brown { "ANC Engine", NULL, "LINN" }, 6934911ccdbSMark Brown { "ANC Engine", NULL, "LINP" }, 6943a66d387SMark Brown }; 6953a66d387SMark Brown 6964911ccdbSMark Brown #ifdef CONFIG_PM 6974911ccdbSMark Brown static int wm2000_suspend(struct snd_soc_codec *codec) 6983a66d387SMark Brown { 6994911ccdbSMark Brown struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev); 7003a66d387SMark Brown 7014911ccdbSMark Brown return wm2000_anc_transition(wm2000, ANC_OFF); 7023a66d387SMark Brown } 7033a66d387SMark Brown 7044911ccdbSMark Brown static int wm2000_resume(struct snd_soc_codec *codec) 7054911ccdbSMark Brown { 7064911ccdbSMark Brown struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev); 7073a66d387SMark Brown 7084911ccdbSMark Brown return wm2000_anc_set_mode(wm2000); 7093a66d387SMark Brown } 7104911ccdbSMark Brown #else 7114911ccdbSMark Brown #define wm2000_suspend NULL 7124911ccdbSMark Brown #define wm2000_resume NULL 7134911ccdbSMark Brown #endif 7143a66d387SMark Brown 71551cc7ed3SMark Brown static bool wm2000_readable_reg(struct device *dev, unsigned int reg) 71651cc7ed3SMark Brown { 71751cc7ed3SMark Brown switch (reg) { 71851cc7ed3SMark Brown case WM2000_REG_SYS_START: 71951cc7ed3SMark Brown case WM2000_REG_SPEECH_CLARITY: 72051cc7ed3SMark Brown case WM2000_REG_SYS_WATCHDOG: 72151cc7ed3SMark Brown case WM2000_REG_ANA_VMID_PD_TIME: 72251cc7ed3SMark Brown case WM2000_REG_ANA_VMID_PU_TIME: 72351cc7ed3SMark Brown case WM2000_REG_CAT_FLTR_INDX: 72451cc7ed3SMark Brown case WM2000_REG_CAT_GAIN_0: 72551cc7ed3SMark Brown case WM2000_REG_SYS_STATUS: 72651cc7ed3SMark Brown case WM2000_REG_SYS_MODE_CNTRL: 72751cc7ed3SMark Brown case WM2000_REG_SYS_START0: 72851cc7ed3SMark Brown case WM2000_REG_SYS_START1: 72951cc7ed3SMark Brown case WM2000_REG_ID1: 73051cc7ed3SMark Brown case WM2000_REG_ID2: 73151cc7ed3SMark Brown case WM2000_REG_REVISON: 73251cc7ed3SMark Brown case WM2000_REG_SYS_CTL1: 73351cc7ed3SMark Brown case WM2000_REG_SYS_CTL2: 73451cc7ed3SMark Brown case WM2000_REG_ANC_STAT: 73551cc7ed3SMark Brown case WM2000_REG_IF_CTL: 73651cc7ed3SMark Brown return true; 73751cc7ed3SMark Brown default: 73851cc7ed3SMark Brown return false; 73951cc7ed3SMark Brown } 74051cc7ed3SMark Brown } 74151cc7ed3SMark Brown 7428aa1fe81SMark Brown static const struct regmap_config wm2000_regmap = { 743d0e12f3fSMark Brown .reg_bits = 16, 7448aa1fe81SMark Brown .val_bits = 8, 74551cc7ed3SMark Brown 74651cc7ed3SMark Brown .max_register = WM2000_REG_IF_CTL, 74751cc7ed3SMark Brown .readable_reg = wm2000_readable_reg, 7488aa1fe81SMark Brown }; 7498aa1fe81SMark Brown 7504911ccdbSMark Brown static int wm2000_probe(struct snd_soc_codec *codec) 7514911ccdbSMark Brown { 7524911ccdbSMark Brown struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev); 7534911ccdbSMark Brown 7544911ccdbSMark Brown /* This will trigger a transition to standby mode by default */ 7554911ccdbSMark Brown wm2000_anc_set_mode(wm2000); 7564911ccdbSMark Brown 7574911ccdbSMark Brown return 0; 7584911ccdbSMark Brown } 7594911ccdbSMark Brown 7604911ccdbSMark Brown static int wm2000_remove(struct snd_soc_codec *codec) 7614911ccdbSMark Brown { 7624911ccdbSMark Brown struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev); 7634911ccdbSMark Brown 7644911ccdbSMark Brown return wm2000_anc_transition(wm2000, ANC_OFF); 7654911ccdbSMark Brown } 7664911ccdbSMark Brown 7674911ccdbSMark Brown static struct snd_soc_codec_driver soc_codec_dev_wm2000 = { 7684911ccdbSMark Brown .probe = wm2000_probe, 7694911ccdbSMark Brown .remove = wm2000_remove, 7704911ccdbSMark Brown .suspend = wm2000_suspend, 7714911ccdbSMark Brown .resume = wm2000_resume, 7724911ccdbSMark Brown 7734911ccdbSMark Brown .dapm_widgets = wm2000_dapm_widgets, 7744911ccdbSMark Brown .num_dapm_widgets = ARRAY_SIZE(wm2000_dapm_widgets), 7754911ccdbSMark Brown .dapm_routes = wm2000_audio_map, 7764911ccdbSMark Brown .num_dapm_routes = ARRAY_SIZE(wm2000_audio_map), 7774911ccdbSMark Brown .controls = wm2000_controls, 7784911ccdbSMark Brown .num_controls = ARRAY_SIZE(wm2000_controls), 7794911ccdbSMark Brown }; 7804911ccdbSMark Brown 7817a79e94eSBill Pemberton static int wm2000_i2c_probe(struct i2c_client *i2c, 7823a66d387SMark Brown const struct i2c_device_id *i2c_id) 7833a66d387SMark Brown { 7843a66d387SMark Brown struct wm2000_priv *wm2000; 7853a66d387SMark Brown struct wm2000_platform_data *pdata; 7863a66d387SMark Brown const char *filename; 787c83f1d7eSJesper Juhl const struct firmware *fw = NULL; 788a89be93cSMark Brown int ret, i; 789c83f1d7eSJesper Juhl int reg; 7903a66d387SMark Brown u16 id; 7913a66d387SMark Brown 792b03e96e4SMark Brown wm2000 = devm_kzalloc(&i2c->dev, sizeof(struct wm2000_priv), 793b03e96e4SMark Brown GFP_KERNEL); 7943a66d387SMark Brown if (wm2000 == NULL) { 7953a66d387SMark Brown dev_err(&i2c->dev, "Unable to allocate private data\n"); 7963a66d387SMark Brown return -ENOMEM; 7973a66d387SMark Brown } 7983a66d387SMark Brown 7998aa1fe81SMark Brown dev_set_drvdata(&i2c->dev, wm2000); 8008aa1fe81SMark Brown 8018fed54aeSMark Brown wm2000->regmap = devm_regmap_init_i2c(i2c, &wm2000_regmap); 8028aa1fe81SMark Brown if (IS_ERR(wm2000->regmap)) { 8038aa1fe81SMark Brown ret = PTR_ERR(wm2000->regmap); 8048aa1fe81SMark Brown dev_err(&i2c->dev, "Failed to allocate register map: %d\n", 8058aa1fe81SMark Brown ret); 806c83f1d7eSJesper Juhl goto out; 8078aa1fe81SMark Brown } 8088aa1fe81SMark Brown 809a89be93cSMark Brown for (i = 0; i < WM2000_NUM_SUPPLIES; i++) 810a89be93cSMark Brown wm2000->supplies[i].supply = wm2000_supplies[i]; 811a89be93cSMark Brown 812a89be93cSMark Brown ret = devm_regulator_bulk_get(&i2c->dev, WM2000_NUM_SUPPLIES, 813a89be93cSMark Brown wm2000->supplies); 814a89be93cSMark Brown if (ret != 0) { 815a89be93cSMark Brown dev_err(&i2c->dev, "Failed to get supplies: %d\n", ret); 816a89be93cSMark Brown return ret; 817a89be93cSMark Brown } 818a89be93cSMark Brown 819a89be93cSMark Brown ret = regulator_bulk_enable(WM2000_NUM_SUPPLIES, wm2000->supplies); 820a89be93cSMark Brown if (ret != 0) { 821a89be93cSMark Brown dev_err(&i2c->dev, "Failed to enable supplies: %d\n", ret); 822a89be93cSMark Brown return ret; 823a89be93cSMark Brown } 824a89be93cSMark Brown 8253a66d387SMark Brown /* Verify that this is a WM2000 */ 8263a66d387SMark Brown reg = wm2000_read(i2c, WM2000_REG_ID1); 8273a66d387SMark Brown id = reg << 8; 8283a66d387SMark Brown reg = wm2000_read(i2c, WM2000_REG_ID2); 8293a66d387SMark Brown id |= reg & 0xff; 8303a66d387SMark Brown 8313a66d387SMark Brown if (id != 0x2000) { 8323a66d387SMark Brown dev_err(&i2c->dev, "Device is not a WM2000 - ID %x\n", id); 8333a66d387SMark Brown ret = -ENODEV; 834a89be93cSMark Brown goto err_supplies; 8353a66d387SMark Brown } 8363a66d387SMark Brown 8373a66d387SMark Brown reg = wm2000_read(i2c, WM2000_REG_REVISON); 8383a66d387SMark Brown dev_info(&i2c->dev, "revision %c\n", reg + 'A'); 8393a66d387SMark Brown 840514cfd6dSMark Brown wm2000->mclk = devm_clk_get(&i2c->dev, "MCLK"); 841514cfd6dSMark Brown if (IS_ERR(wm2000->mclk)) { 842514cfd6dSMark Brown ret = PTR_ERR(wm2000->mclk); 843514cfd6dSMark Brown dev_err(&i2c->dev, "Failed to get MCLK: %d\n", ret); 844514cfd6dSMark Brown goto err_supplies; 845514cfd6dSMark Brown } 846514cfd6dSMark Brown 8473a66d387SMark Brown filename = "wm2000_anc.bin"; 8483a66d387SMark Brown pdata = dev_get_platdata(&i2c->dev); 8493a66d387SMark Brown if (pdata) { 8503a66d387SMark Brown wm2000->mclk_div = pdata->mclkdiv2; 8513a66d387SMark Brown wm2000->speech_clarity = !pdata->speech_enh_disable; 8523a66d387SMark Brown 8533a66d387SMark Brown if (pdata->download_file) 8543a66d387SMark Brown filename = pdata->download_file; 8553a66d387SMark Brown } 8563a66d387SMark Brown 8573a66d387SMark Brown ret = request_firmware(&fw, filename, &i2c->dev); 8583a66d387SMark Brown if (ret != 0) { 8593a66d387SMark Brown dev_err(&i2c->dev, "Failed to acquire ANC data: %d\n", ret); 860a89be93cSMark Brown goto err_supplies; 8613a66d387SMark Brown } 8623a66d387SMark Brown 8633a66d387SMark Brown /* Pre-cook the concatenation of the register address onto the image */ 8643a66d387SMark Brown wm2000->anc_download_size = fw->size + 2; 865b03e96e4SMark Brown wm2000->anc_download = devm_kzalloc(&i2c->dev, 866b03e96e4SMark Brown wm2000->anc_download_size, 867b03e96e4SMark Brown GFP_KERNEL); 8683a66d387SMark Brown if (wm2000->anc_download == NULL) { 8693a66d387SMark Brown dev_err(&i2c->dev, "Out of memory\n"); 8703a66d387SMark Brown ret = -ENOMEM; 871a89be93cSMark Brown goto err_supplies; 8723a66d387SMark Brown } 8733a66d387SMark Brown 8743a66d387SMark Brown wm2000->anc_download[0] = 0x80; 8753a66d387SMark Brown wm2000->anc_download[1] = 0x00; 8763a66d387SMark Brown memcpy(wm2000->anc_download + 2, fw->data, fw->size); 8773a66d387SMark Brown 8783a66d387SMark Brown wm2000->anc_eng_ena = 1; 879e71fa370SMark Brown wm2000->anc_active = 1; 880e71fa370SMark Brown wm2000->spk_ena = 1; 8813a66d387SMark Brown wm2000->i2c = i2c; 8823a66d387SMark Brown 8833a66d387SMark Brown wm2000_reset(wm2000); 8843a66d387SMark Brown 885c83f1d7eSJesper Juhl ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_wm2000, NULL, 0); 8863a66d387SMark Brown 887a89be93cSMark Brown err_supplies: 888a89be93cSMark Brown regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies); 8893a66d387SMark Brown 890c83f1d7eSJesper Juhl out: 891c83f1d7eSJesper Juhl release_firmware(fw); 8923a66d387SMark Brown return ret; 8933a66d387SMark Brown } 8943a66d387SMark Brown 8957a79e94eSBill Pemberton static int wm2000_i2c_remove(struct i2c_client *i2c) 8963a66d387SMark Brown { 8974911ccdbSMark Brown snd_soc_unregister_codec(&i2c->dev); 8988aa1fe81SMark Brown 8993a66d387SMark Brown return 0; 9003a66d387SMark Brown } 9013a66d387SMark Brown 9023a66d387SMark Brown static const struct i2c_device_id wm2000_i2c_id[] = { 9033a66d387SMark Brown { "wm2000", 0 }, 9043a66d387SMark Brown { } 9053a66d387SMark Brown }; 9063a66d387SMark Brown MODULE_DEVICE_TABLE(i2c, wm2000_i2c_id); 9073a66d387SMark Brown 9083a66d387SMark Brown static struct i2c_driver wm2000_i2c_driver = { 9093a66d387SMark Brown .driver = { 9103a66d387SMark Brown .name = "wm2000", 9113a66d387SMark Brown .owner = THIS_MODULE, 9123a66d387SMark Brown }, 9133a66d387SMark Brown .probe = wm2000_i2c_probe, 9147a79e94eSBill Pemberton .remove = wm2000_i2c_remove, 9153a66d387SMark Brown .id_table = wm2000_i2c_id, 9163a66d387SMark Brown }; 9173a66d387SMark Brown 9183a4bfd88SSachin Kamat module_i2c_driver(wm2000_i2c_driver); 9193a66d387SMark Brown 9203a66d387SMark Brown MODULE_DESCRIPTION("ASoC WM2000 driver"); 9213a66d387SMark Brown MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfonmicro.com>"); 9223a66d387SMark Brown MODULE_LICENSE("GPL"); 923