[media] tda18212: convert driver to I2C binding
Convert driver from DVB proprietary model to common I2C model. Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Antti Palosaari
Mauro Carvalho Chehab
parent
ac7a24fb75
commit
0e584cc295
2 changed files with 79 additions and 64 deletions
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@ -24,8 +24,8 @@
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#define MAX_XFER_SIZE 64
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struct tda18212_priv {
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struct tda18212_config *cfg;
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struct i2c_adapter *i2c;
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struct tda18212_config cfg;
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struct i2c_client *client;
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u32 if_frequency;
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};
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@ -38,7 +38,7 @@ static int tda18212_wr_regs(struct tda18212_priv *priv, u8 reg, u8 *val,
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u8 buf[MAX_XFER_SIZE];
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struct i2c_msg msg[1] = {
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{
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.addr = priv->cfg->i2c_address,
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.addr = priv->client->addr,
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.flags = 0,
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.len = 1 + len,
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.buf = buf,
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@ -46,7 +46,7 @@ static int tda18212_wr_regs(struct tda18212_priv *priv, u8 reg, u8 *val,
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};
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if (1 + len > sizeof(buf)) {
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dev_warn(&priv->i2c->dev,
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dev_warn(&priv->client->dev,
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"%s: i2c wr reg=%04x: len=%d is too big!\n",
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KBUILD_MODNAME, reg, len);
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return -EINVAL;
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@ -55,12 +55,12 @@ static int tda18212_wr_regs(struct tda18212_priv *priv, u8 reg, u8 *val,
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buf[0] = reg;
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memcpy(&buf[1], val, len);
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ret = i2c_transfer(priv->i2c, msg, 1);
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ret = i2c_transfer(priv->client->adapter, msg, 1);
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if (ret == 1) {
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ret = 0;
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} else {
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dev_warn(&priv->i2c->dev, "%s: i2c wr failed=%d reg=%02x " \
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"len=%d\n", KBUILD_MODNAME, ret, reg, len);
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dev_warn(&priv->client->dev, "%s: i2c wr failed=%d reg=%02x len=%d\n",
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KBUILD_MODNAME, ret, reg, len);
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ret = -EREMOTEIO;
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}
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return ret;
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@ -74,12 +74,12 @@ static int tda18212_rd_regs(struct tda18212_priv *priv, u8 reg, u8 *val,
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u8 buf[MAX_XFER_SIZE];
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struct i2c_msg msg[2] = {
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{
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.addr = priv->cfg->i2c_address,
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.addr = priv->client->addr,
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.flags = 0,
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.len = 1,
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.buf = ®,
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}, {
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.addr = priv->cfg->i2c_address,
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.addr = priv->client->addr,
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.flags = I2C_M_RD,
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.len = len,
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.buf = buf,
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@ -87,19 +87,19 @@ static int tda18212_rd_regs(struct tda18212_priv *priv, u8 reg, u8 *val,
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};
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if (len > sizeof(buf)) {
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dev_warn(&priv->i2c->dev,
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dev_warn(&priv->client->dev,
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"%s: i2c rd reg=%04x: len=%d is too big!\n",
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KBUILD_MODNAME, reg, len);
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return -EINVAL;
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}
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ret = i2c_transfer(priv->i2c, msg, 2);
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ret = i2c_transfer(priv->client->adapter, msg, 2);
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if (ret == 2) {
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memcpy(val, buf, len);
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ret = 0;
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} else {
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dev_warn(&priv->i2c->dev, "%s: i2c rd failed=%d reg=%02x " \
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"len=%d\n", KBUILD_MODNAME, ret, reg, len);
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dev_warn(&priv->client->dev, "%s: i2c rd failed=%d reg=%02x len=%d\n",
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KBUILD_MODNAME, ret, reg, len);
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ret = -EREMOTEIO;
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}
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@ -166,7 +166,7 @@ static int tda18212_set_params(struct dvb_frontend *fe)
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[ATSC_QAM] = { 0x7d, 0x20, 0x63 },
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};
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dev_dbg(&priv->i2c->dev,
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dev_dbg(&priv->client->dev,
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"%s: delivery_system=%d frequency=%d bandwidth_hz=%d\n",
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__func__, c->delivery_system, c->frequency,
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c->bandwidth_hz);
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@ -176,25 +176,25 @@ static int tda18212_set_params(struct dvb_frontend *fe)
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switch (c->delivery_system) {
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case SYS_ATSC:
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if_khz = priv->cfg->if_atsc_vsb;
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if_khz = priv->cfg.if_atsc_vsb;
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i = ATSC_VSB;
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break;
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case SYS_DVBC_ANNEX_B:
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if_khz = priv->cfg->if_atsc_qam;
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if_khz = priv->cfg.if_atsc_qam;
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i = ATSC_QAM;
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break;
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case SYS_DVBT:
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switch (c->bandwidth_hz) {
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case 6000000:
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if_khz = priv->cfg->if_dvbt_6;
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if_khz = priv->cfg.if_dvbt_6;
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i = DVBT_6;
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break;
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case 7000000:
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if_khz = priv->cfg->if_dvbt_7;
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if_khz = priv->cfg.if_dvbt_7;
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i = DVBT_7;
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break;
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case 8000000:
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if_khz = priv->cfg->if_dvbt_8;
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if_khz = priv->cfg.if_dvbt_8;
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i = DVBT_8;
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break;
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default:
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@ -205,15 +205,15 @@ static int tda18212_set_params(struct dvb_frontend *fe)
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case SYS_DVBT2:
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switch (c->bandwidth_hz) {
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case 6000000:
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if_khz = priv->cfg->if_dvbt2_6;
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if_khz = priv->cfg.if_dvbt2_6;
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i = DVBT2_6;
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break;
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case 7000000:
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if_khz = priv->cfg->if_dvbt2_7;
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if_khz = priv->cfg.if_dvbt2_7;
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i = DVBT2_7;
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break;
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case 8000000:
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if_khz = priv->cfg->if_dvbt2_8;
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if_khz = priv->cfg.if_dvbt2_8;
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i = DVBT2_8;
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break;
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default:
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@ -223,7 +223,7 @@ static int tda18212_set_params(struct dvb_frontend *fe)
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break;
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case SYS_DVBC_ANNEX_A:
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case SYS_DVBC_ANNEX_C:
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if_khz = priv->cfg->if_dvbc;
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if_khz = priv->cfg.if_dvbc;
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i = DVBC_8;
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break;
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default:
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@ -266,7 +266,7 @@ static int tda18212_set_params(struct dvb_frontend *fe)
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return ret;
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error:
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dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
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dev_dbg(&priv->client->dev, "%s: failed=%d\n", __func__, ret);
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goto exit;
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}
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@ -279,13 +279,6 @@ static int tda18212_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
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return 0;
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}
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static int tda18212_release(struct dvb_frontend *fe)
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{
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kfree(fe->tuner_priv);
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fe->tuner_priv = NULL;
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return 0;
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}
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static const struct dvb_tuner_ops tda18212_tuner_ops = {
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.info = {
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.name = "NXP TDA18212",
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@ -295,34 +288,36 @@ static const struct dvb_tuner_ops tda18212_tuner_ops = {
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.frequency_step = 1000,
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},
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.release = tda18212_release,
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.set_params = tda18212_set_params,
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.get_if_frequency = tda18212_get_if_frequency,
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};
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struct dvb_frontend *tda18212_attach(struct dvb_frontend *fe,
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struct i2c_adapter *i2c, struct tda18212_config *cfg)
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static int tda18212_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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struct tda18212_priv *priv = NULL;
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struct tda18212_config *cfg = client->dev.platform_data;
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struct dvb_frontend *fe = cfg->fe;
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struct tda18212_priv *priv;
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int ret;
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u8 chip_id = chip_id;
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char *version;
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priv = kzalloc(sizeof(struct tda18212_priv), GFP_KERNEL);
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if (priv == NULL)
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return NULL;
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priv = kzalloc(sizeof(*priv), GFP_KERNEL);
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if (!priv) {
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ret = -ENOMEM;
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dev_err(&client->dev, "%s: kzalloc() failed\n", KBUILD_MODNAME);
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goto err;
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}
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priv->cfg = cfg;
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priv->i2c = i2c;
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fe->tuner_priv = priv;
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memcpy(&priv->cfg, cfg, sizeof(struct tda18212_config));
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priv->client = client;
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/* check if the tuner is there */
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if (fe->ops.i2c_gate_ctrl)
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fe->ops.i2c_gate_ctrl(fe, 1); /* open I2C-gate */
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/* check if the tuner is there */
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ret = tda18212_rd_reg(priv, 0x00, &chip_id);
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dev_dbg(&priv->i2c->dev, "%s: chip_id=%02x\n", __func__, chip_id);
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dev_dbg(&priv->client->dev, "%s: chip_id=%02x\n", __func__, chip_id);
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if (fe->ops.i2c_gate_ctrl)
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fe->ops.i2c_gate_ctrl(fe, 0); /* close I2C-gate */
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@ -338,23 +333,57 @@ struct dvb_frontend *tda18212_attach(struct dvb_frontend *fe,
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version = "S"; /* slave */
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break;
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default:
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ret = -ENODEV;
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goto err;
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}
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dev_info(&priv->i2c->dev,
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dev_info(&priv->client->dev,
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"%s: NXP TDA18212HN/%s successfully identified\n",
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KBUILD_MODNAME, version);
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fe->tuner_priv = priv;
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memcpy(&fe->ops.tuner_ops, &tda18212_tuner_ops,
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sizeof(struct dvb_tuner_ops));
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sizeof(struct dvb_tuner_ops));
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i2c_set_clientdata(client, priv);
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return fe;
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return 0;
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err:
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dev_dbg(&i2c->dev, "%s: failed=%d\n", __func__, ret);
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dev_dbg(&client->dev, "%s: failed=%d\n", __func__, ret);
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kfree(priv);
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return NULL;
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return ret;
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}
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EXPORT_SYMBOL(tda18212_attach);
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static int tda18212_remove(struct i2c_client *client)
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{
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struct tda18212_priv *priv = i2c_get_clientdata(client);
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struct dvb_frontend *fe = priv->cfg.fe;
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dev_dbg(&client->dev, "%s:\n", __func__);
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memset(&fe->ops.tuner_ops, 0, sizeof(struct dvb_tuner_ops));
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fe->tuner_priv = NULL;
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kfree(priv);
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return 0;
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}
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static const struct i2c_device_id tda18212_id[] = {
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{"tda18212", 0},
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{}
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};
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MODULE_DEVICE_TABLE(i2c, tda18212_id);
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static struct i2c_driver tda18212_driver = {
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.driver = {
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.owner = THIS_MODULE,
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.name = "tda18212",
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},
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.probe = tda18212_probe,
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.remove = tda18212_remove,
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.id_table = tda18212_id,
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};
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module_i2c_driver(tda18212_driver);
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MODULE_DESCRIPTION("NXP TDA18212HN silicon tuner driver");
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MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
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@ -25,8 +25,6 @@
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#include "dvb_frontend.h"
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struct tda18212_config {
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u8 i2c_address;
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u16 if_dvbt_6;
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u16 if_dvbt_7;
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u16 if_dvbt_8;
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@ -44,16 +42,4 @@ struct tda18212_config {
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struct dvb_frontend *fe;
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};
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#if IS_ENABLED(CONFIG_MEDIA_TUNER_TDA18212)
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extern struct dvb_frontend *tda18212_attach(struct dvb_frontend *fe,
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struct i2c_adapter *i2c, struct tda18212_config *cfg);
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#else
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static inline struct dvb_frontend *tda18212_attach(struct dvb_frontend *fe,
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struct i2c_adapter *i2c, struct tda18212_config *cfg)
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{
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printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
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return NULL;
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}
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#endif
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#endif
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