diff options
| -rw-r--r-- | sound/soc/codecs/tas5086.c | 85 |
1 files changed, 84 insertions, 1 deletions
diff --git a/sound/soc/codecs/tas5086.c b/sound/soc/codecs/tas5086.c index d447c4a..57c9de0 100644 --- a/sound/soc/codecs/tas5086.c +++ b/sound/soc/codecs/tas5086.c @@ -119,6 +119,17 @@ static const struct reg_default tas5086_reg_defaults[] = { { 0x1c, 0x05 }, }; +static int tas5086_register_size(struct device *dev, unsigned int reg) +{ + switch (reg) { + case TAS5086_DEV_ID ... TAS5086_BKNDERR: + return 1; + } + + dev_err(dev, "Unsupported register address: %d\n", reg); + return 0; +} + static bool tas5086_accessible_reg(struct device *dev, unsigned int reg) { return !((reg == 0x0f) || (reg >= 0x11 && reg <= 0x17)); @@ -140,6 +151,76 @@ static bool tas5086_writeable_reg(struct device *dev, unsigned int reg) return tas5086_accessible_reg(dev, reg) && (reg != TAS5086_DEV_ID); } +static int tas5086_reg_write(void *context, unsigned int reg, + unsigned int value) +{ + struct i2c_client *client = context; + unsigned int i, size; + uint8_t buf[5]; + int ret; + + size = tas5086_register_size(&client->dev, reg); + if (size == 0) + return -EINVAL; + + buf[0] = reg; + + for (i = size; i >= 1; --i) { + buf[i] = value; + value >>= 8; + } + + ret = i2c_master_send(client, buf, size + 1); + if (ret == size + 1) + return 0; + else if (ret < 0) + return ret; + else + return -EIO; +} + +static int tas5086_reg_read(void *context, unsigned int reg, + unsigned int *value) +{ + struct i2c_client *client = context; + uint8_t send_buf, recv_buf[4]; + struct i2c_msg msgs[2]; + unsigned int size; + unsigned int i; + int ret; + + size = tas5086_register_size(&client->dev, reg); + if (size == 0) + return -EINVAL; + + send_buf = reg; + + 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 = 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 <<= 8; + *value |= recv_buf[i]; + } + + return 0; +} + struct tas5086_private { struct regmap *regmap; unsigned int mclk, sclk; @@ -508,6 +589,8 @@ static const struct regmap_config tas5086_regmap = { .volatile_reg = tas5086_volatile_reg, .writeable_reg = tas5086_writeable_reg, .readable_reg = tas5086_accessible_reg, + .reg_read = tas5086_reg_read, + .reg_write = tas5086_reg_write, }; static int tas5086_i2c_probe(struct i2c_client *i2c, @@ -522,7 +605,7 @@ static int tas5086_i2c_probe(struct i2c_client *i2c, if (!priv) return -ENOMEM; - priv->regmap = devm_regmap_init_i2c(i2c, &tas5086_regmap); + priv->regmap = devm_regmap_init(dev, NULL, i2c, &tas5086_regmap); if (IS_ERR(priv->regmap)) { ret = PTR_ERR(priv->regmap); dev_err(&i2c->dev, "Failed to create regmap: %d\n", ret); |
