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Add support for WM8978 i2c dac

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Wizmo2
2021-04-05 14:34:38 -04:00
parent 1b39a4f7c9
commit dbc7a6b14e
5 changed files with 208 additions and 3 deletions
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2
components/squeezelite/CMakeLists.txt
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@@ -1,4 +1,4 @@
idf_component_register( SRC_DIRS . external ac101 tas57xx
idf_component_register( SRC_DIRS . external ac101 tas57xx wm8978
INCLUDE_DIRS . ac101
PRIV_REQUIRES
codecs

1
components/squeezelite/adac.h
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@@ -28,6 +28,7 @@ struct adac_s {
extern const struct adac_s dac_tas57xx;
extern const struct adac_s dac_tas5713;
extern const struct adac_s dac_ac101;
extern const struct adac_s dac_wm8978;
extern const struct adac_s dac_external;
int adac_init(char *config, int i2c_port);

2
components/squeezelite/component.mk
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@@ -20,7 +20,7 @@ CFLAGS += -O3 -DLINKALL -DLOOPBACK -DNO_FAAD -DRESAMPLE16 -DEMBEDDED -DTREMOR_ON
# -I$(COMPONENT_PATH)/../codecs/inc/faad2
COMPONENT_SRCDIRS := . tas57xx ac101 external
COMPONENT_SRCDIRS := . tas57xx ac101 external wm8978
COMPONENT_ADD_INCLUDEDIRS := . ./tas57xx ./ac101
COMPONENT_EMBED_FILES := vu.data

2
components/squeezelite/output_i2s.c
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@@ -79,7 +79,7 @@ extern struct buffer *streambuf;
extern struct buffer *outputbuf;
extern u8_t *silencebuf;
const struct adac_s *dac_set[] = { &dac_tas57xx, &dac_tas5713, &dac_ac101, NULL };
const struct adac_s *dac_set[] = { &dac_tas57xx, &dac_tas5713, &dac_ac101, &dac_wm8978, NULL };
const struct adac_s *adac = &dac_external;
static log_level loglevel;

204
components/squeezelite/wm8978/wm8978.c Normal file
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@@ -0,0 +1,204 @@
/*
* Squeezelite for esp32
*
* (c) Wizmo 2021
* Sebastien 2019
* Philippe G. 2019, philippe_44@outlook.com
*
* This software is released under the MIT License.
* https://opensource.org/licenses/MIT
*
*/
#include <freertos/FreeRTOS.h>
#include <freertos/task.h>
#include <driver/i2s.h>
#include "driver/i2c.h"
#include "esp_log.h"
#include "cJSON.h"
#include "platform_config.h"
#include "adac.h"
static const char TAG[] = "WM8978";
static void deinit(void) { }
static void speaker(bool active);
static void headset(bool active);
static bool volume(unsigned left, unsigned right) { return false; }
static void power(adac_power_e mode);
static bool init(char *config, int i2c_port_num, i2s_config_t *i2s_config);
static bool i2c_json_execute(char *set);
static esp_err_t i2c_write_reg(uint8_t reg, uint16_t val);
static uint16_t i2c_read_reg(uint8_t reg);
const struct adac_s dac_wm8978 = { "WM8978", init, deinit, power, speaker, headset, volume };
static int i2c_port, i2c_addr;
static cJSON *i2c_json;
// default dac_controlset
static char* default_controlset = "{\"init\": [ {\"reg\":0,\"val\":0},{\"reg\":4,\"val\":16},{\"reg\":6,\"val\":0},{\"reg\":10,\"val\":8},{\"reg\":43,\"val\":16},{\"reg\":49,\"val\":102} ], \"poweron\": [ {\"reg\":1,\"val\":11},{\"reg\":2,\"val\":384},{\"reg\":3,\"val\":111} ], \"poweroff\": [ {\"reg\":1,\"val\":0},{\"reg\":2,\"val\":0},{\"reg\":3,\"val\":0} ]}";
/* Note: Device supports headset and speaker volume/mute, but jack
// insertion is conrolled internaly and not connected gpio on t-audio to monitor.
// (currently jack_handler mutes headset at all times)
// "headseton": [ {"reg":52,"val":57},{"reg":53,"val":319} ], "headsetoff": [ {"reg":52,"val":121},{"reg":53,"val":383} ], "speakeron": [ {"reg":54,"val":57},{"reg":55,"val":319} ], "speakeroff": [ {"reg":54,"val":121},{"reg":55,"val":383} ]}";
*/
// initiation table for non-readbale 9-bit i2c registers
static uint16_t WM8978_REGVAL_TBL[58] =
{
0X0000, 0X0000, 0X0000, 0X0000, 0X0050, 0X0000, 0X0140, 0X0000,
0X0000, 0X0000, 0X0000, 0X00FF, 0X00FF, 0X0000, 0X0100, 0X00FF,
0X00FF, 0X0000, 0X012C, 0X002C, 0X002C, 0X002C, 0X002C, 0X0000,
0X0032, 0X0000, 0X0000, 0X0000, 0X0000, 0X0000, 0X0000, 0X0000,
0X0038, 0X000B, 0X0032, 0X0000, 0X0008, 0X000C, 0X0093, 0X00E9,
0X0000, 0X0000, 0X0000, 0X0000, 0X0003, 0X0010, 0X0010, 0X0100,
0X0100, 0X0002, 0X0001, 0X0001, 0X0039, 0X0039, 0X0039, 0X0039,
0X0001, 0X0001};
/****************************************************************************************
* init
*/
static bool init(char *config, int i2c_port_num, i2s_config_t *i2s_config) {
char *p;
i2c_port = i2c_port_num;
// configure i2c
i2c_config_t i2c_config = {
.mode = I2C_MODE_MASTER,
.sda_io_num = -1,
.sda_pullup_en = GPIO_PULLUP_ENABLE,
.scl_io_num = -1,
.scl_pullup_en = GPIO_PULLUP_ENABLE,
.master.clk_speed = 250000,
};
if ((p = strcasestr(config, "i2c")) != NULL) i2c_addr = atoi(strchr(p, '=') + 1);
if ((p = strcasestr(config, "sda")) != NULL) i2c_config.sda_io_num = atoi(strchr(p, '=') + 1);
if ((p = strcasestr(config, "scl")) != NULL) i2c_config.scl_io_num = atoi(strchr(p, '=') + 1);
p = config_alloc_get_str("dac_controlset", CONFIG_DAC_CONTROLSET, default_controlset);
i2c_json = cJSON_Parse(p);
if (!i2c_addr || !i2c_json || i2c_config.sda_io_num == -1 || i2c_config.scl_io_num == -1) {
if (p) free(p);
ESP_LOGW(TAG, "No i2c controlset found");
return true;
}
ESP_LOGI(TAG, "WM8978 uses IC2 @%d with sda:%d, scl:%d", i2c_addr, i2c_config.sda_io_num, i2c_config.scl_io_num);
// we have an I2C configured
i2c_param_config(i2c_port, &i2c_config);
i2c_driver_install(i2c_port, I2C_MODE_MASTER, false, false, false);
if (!i2c_json_execute("init")) {
ESP_LOGE(TAG, "could not intialize DAC");
return false;
}
// Configure system clk to GPIO0 for DAC MCLK input
ESP_LOGI(TAG, "Configuring MCLK on pin:%d", 0);
PIN_FUNC_SELECT(PERIPHS_IO_MUX_GPIO0_U, FUNC_GPIO0_CLK_OUT1);
REG_WRITE(PIN_CTRL, 0xFFFFFFF0);
return true;
}
/****************************************************************************************
* power
*/
static void power(adac_power_e mode) {
if (mode == ADAC_STANDBY || mode == ADAC_OFF) i2c_json_execute("poweroff");
else i2c_json_execute("poweron");
}
/****************************************************************************************
* speaker
*/
static void speaker(bool active) {
if (active) i2c_json_execute("speakeroff");
else i2c_json_execute("speakeron");
}
/****************************************************************************************
* headset
*/
static void headset(bool active) {
if (active) i2c_json_execute("headsetoff");
else i2c_json_execute("headseton");
}
/****************************************************************************************
*
*/
bool i2c_json_execute(char *set) {
cJSON *json_set = cJSON_GetObjectItemCaseSensitive(i2c_json, set);
cJSON *item;
if (!json_set) return true;
cJSON_ArrayForEach(item, json_set)
{
cJSON *reg = cJSON_GetObjectItemCaseSensitive(item, "reg");
cJSON *val = cJSON_GetObjectItemCaseSensitive(item, "val");
cJSON *mode = cJSON_GetObjectItemCaseSensitive(item, "mode");
if (!reg || !val) continue;
if (!mode) {
i2c_write_reg(reg->valueint, val->valueint);
} else if (!strcasecmp(mode->valuestring, "or")) {
uint16_t data = i2c_read_reg(reg->valueint);
data |= (uint16_t) val->valueint;
i2c_write_reg(reg->valueint, data);
} else if (!strcasecmp(mode->valuestring, "and")) {
uint16_t data = i2c_read_reg(reg->valueint);
data &= (uint16_t) val->valueint;
i2c_write_reg(reg->valueint, data);
}
}
return true;
}
/****************************************************************************************
*
*/
static esp_err_t i2c_write_reg(uint8_t reg, uint16_t val) {
esp_err_t ret;
uint8_t msb;
uint8_t lsb;
msb = (reg << 1) | ((val >> 8) & 0X01);
lsb = val & 0XFF;
i2c_cmd_handle_t cmd = i2c_cmd_link_create();
i2c_master_start(cmd);
i2c_master_write_byte(cmd, (i2c_addr << 1) | I2C_MASTER_WRITE, I2C_MASTER_NACK);
i2c_master_write_byte(cmd, msb, I2C_MASTER_NACK);
i2c_master_write_byte(cmd, lsb, I2C_MASTER_NACK);
i2c_master_stop(cmd);
ret = i2c_master_cmd_begin(i2c_port, cmd, 100 / portTICK_RATE_MS);
i2c_cmd_link_delete(cmd);
if (ret != ESP_OK) {
ESP_LOGW(TAG, "I2C write failed");
} else {
// update local register
WM8978_REGVAL_TBL[reg] = val;
ESP_LOGD(TAG, "I2C Write OK %d=%d (bytes %d %d)", reg, val, msb, lsb);
}
return ret;
}
/****************************************************************************************
* Return local register value
*/
static uint16_t i2c_read_reg(uint8_t reg) {
return WM8978_REGVAL_TBL[reg];
}