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-rw-r--r--sound/soc/codecs/adau1701.c302
1 files changed, 261 insertions, 41 deletions
diff --git a/sound/soc/codecs/adau1701.c b/sound/soc/codecs/adau1701.c
index dafdbe87ede..0e250f118c0 100644
--- a/sound/soc/codecs/adau1701.c
+++ b/sound/soc/codecs/adau1701.c
@@ -13,6 +13,10 @@
#include <linux/i2c.h>
#include <linux/delay.h>
#include <linux/slab.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
+#include <linux/of_device.h>
+#include <linux/regmap.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
@@ -21,16 +25,19 @@
#include "sigmadsp.h"
#include "adau1701.h"
-#define ADAU1701_DSPCTRL 0x1c
-#define ADAU1701_SEROCTL 0x1e
-#define ADAU1701_SERICTL 0x1f
+#define ADAU1701_DSPCTRL 0x081c
+#define ADAU1701_SEROCTL 0x081e
+#define ADAU1701_SERICTL 0x081f
-#define ADAU1701_AUXNPOW 0x22
+#define ADAU1701_AUXNPOW 0x0822
+#define ADAU1701_PINCONF_0 0x0820
+#define ADAU1701_PINCONF_1 0x0821
+#define ADAU1701_AUXNPOW 0x0822
-#define ADAU1701_OSCIPOW 0x26
-#define ADAU1701_DACSET 0x27
+#define ADAU1701_OSCIPOW 0x0826
+#define ADAU1701_DACSET 0x0827
-#define ADAU1701_NUM_REGS 0x28
+#define ADAU1701_MAX_REGISTER 0x0828
#define ADAU1701_DSPCTRL_CR (1 << 2)
#define ADAU1701_DSPCTRL_DAM (1 << 3)
@@ -84,10 +91,18 @@
#define ADAU1701_OSCIPOW_OPD 0x04
#define ADAU1701_DACSET_DACINIT 1
+#define ADAU1707_CLKDIV_UNSET (-1UL)
+
#define ADAU1701_FIRMWARE "adau1701.bin"
struct adau1701 {
+ int gpio_nreset;
+ int gpio_pll_mode[2];
unsigned int dai_fmt;
+ unsigned int pll_clkdiv;
+ unsigned int sysclk;
+ struct regmap *regmap;
+ u8 pin_config[12];
};
static const struct snd_kcontrol_new adau1701_controls[] = {
@@ -119,10 +134,13 @@ static const struct snd_soc_dapm_route adau1701_dapm_routes[] = {
{ "ADC", NULL, "IN1" },
};
-static unsigned int adau1701_register_size(struct snd_soc_codec *codec,
+static unsigned int adau1701_register_size(struct device *dev,
unsigned int reg)
{
switch (reg) {
+ case ADAU1701_PINCONF_0:
+ case ADAU1701_PINCONF_1:
+ return 3;
case ADAU1701_DSPCTRL:
case ADAU1701_SEROCTL:
case ADAU1701_AUXNPOW:
@@ -133,33 +151,42 @@ static unsigned int adau1701_register_size(struct snd_soc_codec *codec,
return 1;
}
- dev_err(codec->dev, "Unsupported register address: %d\n", reg);
+ dev_err(dev, "Unsupported register address: %d\n", reg);
return 0;
}
-static int adau1701_write(struct snd_soc_codec *codec, unsigned int reg,
- unsigned int value)
+static bool adau1701_volatile_reg(struct device *dev, unsigned int reg)
{
+ switch (reg) {
+ case ADAU1701_DACSET:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static int adau1701_reg_write(void *context, unsigned int reg,
+ unsigned int value)
+{
+ struct i2c_client *client = context;
unsigned int i;
unsigned int size;
- uint8_t buf[4];
+ uint8_t buf[5];
int ret;
- size = adau1701_register_size(codec, reg);
+ size = adau1701_register_size(&client->dev, reg);
if (size == 0)
return -EINVAL;
- snd_soc_cache_write(codec, reg, value);
-
- buf[0] = 0x08;
- buf[1] = reg;
+ buf[0] = reg >> 8;
+ buf[1] = reg & 0xff;
for (i = size + 1; i >= 2; --i) {
buf[i] = value;
value >>= 8;
}
- ret = i2c_master_send(to_i2c_client(codec->dev), buf, size + 2);
+ ret = i2c_master_send(client, buf, size + 2);
if (ret == size + 2)
return 0;
else if (ret < 0)
@@ -168,21 +195,107 @@ static int adau1701_write(struct snd_soc_codec *codec, unsigned int reg,
return -EIO;
}
-static unsigned int adau1701_read(struct snd_soc_codec *codec, unsigned int reg)
+static int adau1701_reg_read(void *context, unsigned int reg,
+ unsigned int *value)
{
- unsigned int value;
- unsigned int ret;
+ int ret;
+ unsigned int i;
+ unsigned int size;
+ uint8_t send_buf[2], recv_buf[3];
+ struct i2c_client *client = context;
+ struct i2c_msg msgs[2];
+
+ size = adau1701_register_size(&client->dev, reg);
+ if (size == 0)
+ return -EINVAL;
+
+ send_buf[0] = reg >> 8;
+ send_buf[1] = reg & 0xff;
+
+ msgs[0].addr = client->addr;
+ msgs[0].len = sizeof(send_buf);
+ msgs[0].buf = send_buf;
+ msgs[0].flags = 0;
+
+ msgs[1].addr = client->addr;
+ msgs[1].len = size;
+ msgs[1].buf = recv_buf;
+ msgs[1].flags = I2C_M_RD;
- ret = snd_soc_cache_read(codec, reg, &value);
- if (ret)
+ ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
+ if (ret < 0)
return ret;
+ else if (ret != ARRAY_SIZE(msgs))
+ return -EIO;
+
+ *value = 0;
+
+ for (i = 0; i < size; i++)
+ *value |= recv_buf[i] << (i * 8);
- return value;
+ return 0;
}
-static int adau1701_load_firmware(struct snd_soc_codec *codec)
+static int adau1701_reset(struct snd_soc_codec *codec, unsigned int clkdiv)
{
- return process_sigma_firmware(codec->control_data, ADAU1701_FIRMWARE);
+ struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec);
+ struct i2c_client *client = to_i2c_client(codec->dev);
+ int ret;
+
+ if (clkdiv != ADAU1707_CLKDIV_UNSET &&
+ gpio_is_valid(adau1701->gpio_pll_mode[0]) &&
+ gpio_is_valid(adau1701->gpio_pll_mode[1])) {
+ switch (clkdiv) {
+ case 64:
+ gpio_set_value(adau1701->gpio_pll_mode[0], 0);
+ gpio_set_value(adau1701->gpio_pll_mode[1], 0);
+ break;
+ case 256:
+ gpio_set_value(adau1701->gpio_pll_mode[0], 0);
+ gpio_set_value(adau1701->gpio_pll_mode[1], 1);
+ break;
+ case 384:
+ gpio_set_value(adau1701->gpio_pll_mode[0], 1);
+ gpio_set_value(adau1701->gpio_pll_mode[1], 0);
+ break;
+ case 0: /* fallback */
+ case 512:
+ gpio_set_value(adau1701->gpio_pll_mode[0], 1);
+ gpio_set_value(adau1701->gpio_pll_mode[1], 1);
+ break;
+ }
+ }
+
+ adau1701->pll_clkdiv = clkdiv;
+
+ if (gpio_is_valid(adau1701->gpio_nreset)) {
+ gpio_set_value(adau1701->gpio_nreset, 0);
+ /* minimum reset time is 20ns */
+ udelay(1);
+ gpio_set_value(adau1701->gpio_nreset, 1);
+ /* power-up time may be as long as 85ms */
+ mdelay(85);
+ }
+
+ /*
+ * Postpone the firmware download to a point in time when we
+ * know the correct PLL setup
+ */
+ if (clkdiv != ADAU1707_CLKDIV_UNSET) {
+ ret = process_sigma_firmware(client, ADAU1701_FIRMWARE);
+ if (ret) {
+ dev_warn(codec->dev, "Failed to load firmware\n");
+ return ret;
+ }
+ }
+
+ regmap_write(adau1701->regmap, ADAU1701_DACSET, ADAU1701_DACSET_DACINIT);
+ regmap_write(adau1701->regmap, ADAU1701_DSPCTRL, ADAU1701_DSPCTRL_CR);
+
+ regcache_mark_dirty(adau1701->regmap);
+ regcache_sync(adau1701->regmap);
+
+ return 0;
}
static int adau1701_set_capture_pcm_format(struct snd_soc_codec *codec,
@@ -259,8 +372,22 @@ static int adau1701_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
{
struct snd_soc_codec *codec = dai->codec;
+ struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec);
+ unsigned int clkdiv = adau1701->sysclk / params_rate(params);
snd_pcm_format_t format;
unsigned int val;
+ int ret;
+
+ /*
+ * If the mclk/lrclk ratio changes, the chip needs updated PLL
+ * mode GPIO settings, and a full reset cycle, including a new
+ * firmware upload.
+ */
+ if (clkdiv != adau1701->pll_clkdiv) {
+ ret = adau1701_reset(codec, clkdiv);
+ if (ret < 0)
+ return ret;
+ }
switch (params_rate(params)) {
case 192000:
@@ -352,8 +479,8 @@ static int adau1701_set_dai_fmt(struct snd_soc_dai *codec_dai,
adau1701->dai_fmt = fmt & SND_SOC_DAIFMT_FORMAT_MASK;
- snd_soc_write(codec, ADAU1701_SERICTL, serictl);
- snd_soc_update_bits(codec, ADAU1701_SEROCTL,
+ regmap_write(adau1701->regmap, ADAU1701_SERICTL, serictl);
+ regmap_update_bits(adau1701->regmap, ADAU1701_SEROCTL,
~ADAU1701_SEROCTL_WORD_LEN_MASK, seroctl);
return 0;
@@ -403,6 +530,7 @@ static int adau1701_set_sysclk(struct snd_soc_codec *codec, int clk_id,
int source, unsigned int freq, int dir)
{
unsigned int val;
+ struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec);
switch (clk_id) {
case ADAU1701_CLK_SRC_OSC:
@@ -416,6 +544,7 @@ static int adau1701_set_sysclk(struct snd_soc_codec *codec, int clk_id,
}
snd_soc_update_bits(codec, ADAU1701_OSCIPOW, ADAU1701_OSCIPOW_OPD, val);
+ adau1701->sysclk = freq;
return 0;
}
@@ -452,18 +581,47 @@ static struct snd_soc_dai_driver adau1701_dai = {
.symmetric_rates = 1,
};
+#ifdef CONFIG_OF
+static const struct of_device_id adau1701_dt_ids[] = {
+ { .compatible = "adi,adau1701", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, adau1701_dt_ids);
+#endif
+
static int adau1701_probe(struct snd_soc_codec *codec)
{
- int ret;
+ int i, ret;
+ unsigned int val;
+ struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec);
codec->control_data = to_i2c_client(codec->dev);
- ret = adau1701_load_firmware(codec);
- if (ret)
- dev_warn(codec->dev, "Failed to load firmware\n");
+ /*
+ * Let the pll_clkdiv variable default to something that won't happen
+ * at runtime. That way, we can postpone the firmware download from
+ * adau1701_reset() to a point in time when we know the correct PLL
+ * mode parameters.
+ */
+ adau1701->pll_clkdiv = ADAU1707_CLKDIV_UNSET;
+
+ /* initalize with pre-configured pll mode settings */
+ ret = adau1701_reset(codec, adau1701->pll_clkdiv);
+ if (ret < 0)
+ return ret;
+
+ /* set up pin config */
+ val = 0;
+ for (i = 0; i < 6; i++)
+ val |= adau1701->pin_config[i] << (i * 4);
- snd_soc_write(codec, ADAU1701_DACSET, ADAU1701_DACSET_DACINIT);
- snd_soc_write(codec, ADAU1701_DSPCTRL, ADAU1701_DSPCTRL_CR);
+ regmap_write(adau1701->regmap, ADAU1701_PINCONF_0, val);
+
+ val = 0;
+ for (i = 0; i < 6; i++)
+ val |= adau1701->pin_config[i + 6] << (i * 4);
+
+ regmap_write(adau1701->regmap, ADAU1701_PINCONF_1, val);
return 0;
}
@@ -473,9 +631,6 @@ static struct snd_soc_codec_driver adau1701_codec_drv = {
.set_bias_level = adau1701_set_bias_level,
.idle_bias_off = true,
- .reg_cache_size = ADAU1701_NUM_REGS,
- .reg_word_size = sizeof(u16),
-
.controls = adau1701_controls,
.num_controls = ARRAY_SIZE(adau1701_controls),
.dapm_widgets = adau1701_dapm_widgets,
@@ -483,22 +638,86 @@ static struct snd_soc_codec_driver adau1701_codec_drv = {
.dapm_routes = adau1701_dapm_routes,
.num_dapm_routes = ARRAY_SIZE(adau1701_dapm_routes),
- .write = adau1701_write,
- .read = adau1701_read,
-
.set_sysclk = adau1701_set_sysclk,
};
+static const struct regmap_config adau1701_regmap = {
+ .reg_bits = 16,
+ .val_bits = 32,
+ .max_register = ADAU1701_MAX_REGISTER,
+ .cache_type = REGCACHE_RBTREE,
+ .volatile_reg = adau1701_volatile_reg,
+ .reg_write = adau1701_reg_write,
+ .reg_read = adau1701_reg_read,
+};
+
static int adau1701_i2c_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct adau1701 *adau1701;
+ struct device *dev = &client->dev;
+ int gpio_nreset = -EINVAL;
+ int gpio_pll_mode[2] = { -EINVAL, -EINVAL };
int ret;
- adau1701 = devm_kzalloc(&client->dev, sizeof(*adau1701), GFP_KERNEL);
+ adau1701 = devm_kzalloc(dev, sizeof(*adau1701), GFP_KERNEL);
if (!adau1701)
return -ENOMEM;
+ adau1701->regmap = devm_regmap_init(dev, NULL, client,
+ &adau1701_regmap);
+ if (IS_ERR(adau1701->regmap))
+ return PTR_ERR(adau1701->regmap);
+
+ if (dev->of_node) {
+ gpio_nreset = of_get_named_gpio(dev->of_node, "reset-gpio", 0);
+ if (gpio_nreset < 0 && gpio_nreset != -ENOENT)
+ return gpio_nreset;
+
+ gpio_pll_mode[0] = of_get_named_gpio(dev->of_node,
+ "adi,pll-mode-gpios", 0);
+ if (gpio_pll_mode[0] < 0 && gpio_pll_mode[0] != -ENOENT)
+ return gpio_pll_mode[0];
+
+ gpio_pll_mode[1] = of_get_named_gpio(dev->of_node,
+ "adi,pll-mode-gpios", 1);
+ if (gpio_pll_mode[1] < 0 && gpio_pll_mode[1] != -ENOENT)
+ return gpio_pll_mode[1];
+
+ of_property_read_u32(dev->of_node, "adi,pll-clkdiv",
+ &adau1701->pll_clkdiv);
+
+ of_property_read_u8_array(dev->of_node, "adi,pin-config",
+ adau1701->pin_config,
+ ARRAY_SIZE(adau1701->pin_config));
+ }
+
+ if (gpio_is_valid(gpio_nreset)) {
+ ret = devm_gpio_request_one(dev, gpio_nreset, GPIOF_OUT_INIT_LOW,
+ "ADAU1701 Reset");
+ if (ret < 0)
+ return ret;
+ }
+
+ if (gpio_is_valid(gpio_pll_mode[0]) &&
+ gpio_is_valid(gpio_pll_mode[1])) {
+ ret = devm_gpio_request_one(dev, gpio_pll_mode[0],
+ GPIOF_OUT_INIT_LOW,
+ "ADAU1701 PLL mode 0");
+ if (ret < 0)
+ return ret;
+
+ ret = devm_gpio_request_one(dev, gpio_pll_mode[1],
+ GPIOF_OUT_INIT_LOW,
+ "ADAU1701 PLL mode 1");
+ if (ret < 0)
+ return ret;
+ }
+
+ adau1701->gpio_nreset = gpio_nreset;
+ adau1701->gpio_pll_mode[0] = gpio_pll_mode[0];
+ adau1701->gpio_pll_mode[1] = gpio_pll_mode[1];
+
i2c_set_clientdata(client, adau1701);
ret = snd_soc_register_codec(&client->dev, &adau1701_codec_drv,
&adau1701_dai, 1);
@@ -521,6 +740,7 @@ static struct i2c_driver adau1701_i2c_driver = {
.driver = {
.name = "adau1701",
.owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(adau1701_dt_ids),
},
.probe = adau1701_i2c_probe,
.remove = adau1701_i2c_remove,
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-16 22:35:12 +0000