diff options
Diffstat (limited to 'drivers/media/video/tda8290.c')
| -rw-r--r-- | drivers/media/video/tda8290.c | 319 |
1 files changed, 313 insertions, 6 deletions
diff --git a/drivers/media/video/tda8290.c b/drivers/media/video/tda8290.c index 5d30cbcd7361..a38ed9db6403 100644 --- a/drivers/media/video/tda8290.c +++ b/drivers/media/video/tda8290.c @@ -25,8 +25,9 @@ #include <linux/videodev.h> #include "tda8290.h" #include "tda827x.h" +#include "tda18271.h" -static int tuner_debug = 0; +static int tuner_debug; module_param_named(debug, tuner_debug, int, 0644); MODULE_PARM_DESC(debug, "enable verbose debug messages"); @@ -65,6 +66,34 @@ static void tda8290_i2c_bridge(struct tuner *t, int close) } } +static void tda8295_i2c_bridge(struct tuner *t, int close) +{ + struct tda8290_priv *priv = t->priv; + + unsigned char enable[2] = { 0x45, 0xc1 }; + unsigned char disable[2] = { 0x46, 0x00 }; + unsigned char buf[3] = { 0x45, 0x01, 0x00 }; + unsigned char *msg; + if (close) { + msg = enable; + tuner_i2c_xfer_send(&priv->i2c_props, msg, 2); + /* let the bridge stabilize */ + msleep(20); + } else { + msg = disable; + tuner_i2c_xfer_send(&priv->i2c_props, msg, 1); + tuner_i2c_xfer_recv(&priv->i2c_props, &msg[1], 1); + + buf[2] = msg[1]; + buf[2] &= ~0x04; + tuner_i2c_xfer_send(&priv->i2c_props, buf, 3); + msleep(5); + + msg[1] |= 0x04; + tuner_i2c_xfer_send(&priv->i2c_props, msg, 2); + } +} + /*---------------------------------------------------------------------*/ static void set_audio(struct tuner *t) @@ -233,6 +262,153 @@ static void tda8290_set_freq(struct tuner *t, unsigned int freq) /*---------------------------------------------------------------------*/ +static void tda8295_power(struct tuner *t, int enable) +{ + struct tda8290_priv *priv = t->priv; + unsigned char buf[] = { 0x30, 0x00 }; /* clb_stdbt */ + + tuner_i2c_xfer_send(&priv->i2c_props, &buf[0], 1); + tuner_i2c_xfer_recv(&priv->i2c_props, &buf[1], 1); + + if (enable) + buf[1] = 0x01; + else + buf[1] = 0x03; + + tuner_i2c_xfer_send(&priv->i2c_props, buf, 2); +} + +static void tda8295_set_easy_mode(struct tuner *t, int enable) +{ + struct tda8290_priv *priv = t->priv; + unsigned char buf[] = { 0x01, 0x00 }; + + tuner_i2c_xfer_send(&priv->i2c_props, &buf[0], 1); + tuner_i2c_xfer_recv(&priv->i2c_props, &buf[1], 1); + + if (enable) + buf[1] = 0x01; /* rising edge sets regs 0x02 - 0x23 */ + else + buf[1] = 0x00; /* reset active bit */ + + tuner_i2c_xfer_send(&priv->i2c_props, buf, 2); +} + +static void tda8295_set_video_std(struct tuner *t) +{ + struct tda8290_priv *priv = t->priv; + unsigned char buf[] = { 0x00, priv->tda8290_easy_mode }; + + tuner_i2c_xfer_send(&priv->i2c_props, buf, 2); + + tda8295_set_easy_mode(t, 1); + msleep(20); + tda8295_set_easy_mode(t, 0); +} + +/*---------------------------------------------------------------------*/ + +static void tda8295_agc1_out(struct tuner *t, int enable) +{ + struct tda8290_priv *priv = t->priv; + unsigned char buf[] = { 0x02, 0x00 }; /* DIV_FUNC */ + + tuner_i2c_xfer_send(&priv->i2c_props, &buf[0], 1); + tuner_i2c_xfer_recv(&priv->i2c_props, &buf[1], 1); + + if (enable) + buf[1] &= ~0x40; + else + buf[1] |= 0x40; + + tuner_i2c_xfer_send(&priv->i2c_props, buf, 2); +} + +static void tda8295_agc2_out(struct tuner *t, int enable) +{ + struct tda8290_priv *priv = t->priv; + unsigned char set_gpio_cf[] = { 0x44, 0x00 }; + unsigned char set_gpio_val[] = { 0x46, 0x00 }; + + tuner_i2c_xfer_send(&priv->i2c_props, &set_gpio_cf[0], 1); + tuner_i2c_xfer_recv(&priv->i2c_props, &set_gpio_cf[1], 1); + tuner_i2c_xfer_send(&priv->i2c_props, &set_gpio_val[0], 1); + tuner_i2c_xfer_recv(&priv->i2c_props, &set_gpio_val[1], 1); + + set_gpio_cf[1] &= 0xf0; /* clear GPIO_0 bits 3-0 */ + + if (enable) { + set_gpio_cf[1] |= 0x01; /* config GPIO_0 as Open Drain Out */ + set_gpio_val[1] &= 0xfe; /* set GPIO_0 pin low */ + } + tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_cf, 2); + tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_val, 2); +} + +static int tda8295_has_signal(struct tuner *t) +{ + struct tda8290_priv *priv = t->priv; + + unsigned char hvpll_stat = 0x26; + unsigned char ret; + + tuner_i2c_xfer_send(&priv->i2c_props, &hvpll_stat, 1); + tuner_i2c_xfer_recv(&priv->i2c_props, &ret, 1); + return (ret & 0x01) ? 65535 : 0; +} + +/*---------------------------------------------------------------------*/ + +static void tda8295_set_freq(struct tuner *t, unsigned int freq) +{ + struct tda8290_priv *priv = t->priv; + u16 ifc; + + unsigned char blanking_mode[] = { 0x1d, 0x00 }; + + struct analog_parameters params = { + .frequency = freq, + .mode = t->mode, + .audmode = t->audmode, + .std = t->std + }; + + set_audio(t); + + ifc = priv->cfg.sgIF; /* FIXME */ + + tuner_dbg("%s: ifc = %u, freq = %d\n", __FUNCTION__, ifc, freq); + + tda8295_power(t, 1); + tda8295_agc1_out(t, 1); + + tuner_i2c_xfer_send(&priv->i2c_props, &blanking_mode[0], 1); + tuner_i2c_xfer_recv(&priv->i2c_props, &blanking_mode[1], 1); + + tda8295_set_video_std(t); + + blanking_mode[1] = 0x03; + tuner_i2c_xfer_send(&priv->i2c_props, blanking_mode, 2); + msleep(20); + + tda8295_i2c_bridge(t, 1); + + if (t->fe.ops.tuner_ops.set_analog_params) + t->fe.ops.tuner_ops.set_analog_params(&t->fe, ¶ms); + + if (priv->cfg.agcf) + priv->cfg.agcf(&t->fe); + + if (tda8295_has_signal(t)) + tuner_dbg("tda8295 is locked\n"); + else + tuner_dbg("tda8295 not locked, no signal?\n"); + + tda8295_i2c_bridge(t, 0); +} + +/*---------------------------------------------------------------------*/ + static int tda8290_has_signal(struct tuner *t) { struct tda8290_priv *priv = t->priv; @@ -264,6 +440,13 @@ static void tda8290_standby(struct tuner *t) tuner_i2c_xfer_send(&priv->i2c_props, tda8290_standby, 2); } +static void tda8295_standby(struct tuner *t) +{ + tda8295_agc1_out(t, 0); /* Put AGC in tri-state */ + + tda8295_power(t, 0); +} + static void tda8290_init_if(struct tuner *t) { struct tda8290_priv *priv = t->priv; @@ -279,6 +462,35 @@ static void tda8290_init_if(struct tuner *t) tuner_i2c_xfer_send(&priv->i2c_props, set_VS, 2); } +static void tda8295_init_if(struct tuner *t) +{ + struct tda8290_priv *priv = t->priv; + + static unsigned char set_adc_ctl[] = { 0x33, 0x14 }; + static unsigned char set_adc_ctl2[] = { 0x34, 0x00 }; + static unsigned char set_pll_reg6[] = { 0x3e, 0x63 }; + static unsigned char set_pll_reg0[] = { 0x38, 0x23 }; + static unsigned char set_pll_reg7[] = { 0x3f, 0x01 }; + static unsigned char set_pll_reg10[] = { 0x42, 0x61 }; + static unsigned char set_gpio_reg0[] = { 0x44, 0x0b }; + + tda8295_power(t, 1); + + tda8295_set_easy_mode(t, 0); + tda8295_set_video_std(t); + + tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl, 2); + tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl2, 2); + tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg6, 2); + tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg0, 2); + tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg7, 2); + tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg10, 2); + tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_reg0, 2); + + tda8295_agc1_out(t, 0); + tda8295_agc2_out(t, 0); +} + static void tda8290_init_tuner(struct tuner *t) { struct tda8290_priv *priv = t->priv; @@ -298,7 +510,7 @@ static void tda8290_init_tuner(struct tuner *t) /*---------------------------------------------------------------------*/ -static void tda8290_release(struct tuner *t) +static void tda829x_release(struct tuner *t) { if (t->fe.ops.tuner_ops.release) t->fe.ops.tuner_ops.release(&t->fe); @@ -312,7 +524,15 @@ static struct tuner_operations tda8290_tuner_ops = { .set_radio_freq = tda8290_set_freq, .has_signal = tda8290_has_signal, .standby = tda8290_standby, - .release = tda8290_release, + .release = tda829x_release, +}; + +static struct tuner_operations tda8295_tuner_ops = { + .set_tv_freq = tda8295_set_freq, + .set_radio_freq = tda8295_set_freq, + .has_signal = tda8295_has_signal, + .standby = tda8295_standby, + .release = tda829x_release, }; int tda8290_attach(struct tuner *t) @@ -403,6 +623,95 @@ int tda8290_attach(struct tuner *t) tda8290_init_if(t); return 0; } +EXPORT_SYMBOL_GPL(tda8290_attach); + +int tda8295_attach(struct tuner *t) +{ + struct tda8290_priv *priv = NULL; + u8 data; + int i, ret, tuners_found; + u32 tuner_addrs; + struct i2c_msg msg = { .flags = I2C_M_RD, .buf = &data, .len = 1 }; + + priv = kzalloc(sizeof(struct tda8290_priv), GFP_KERNEL); + if (priv == NULL) + return -ENOMEM; + t->priv = priv; + + priv->i2c_props.addr = t->i2c.addr; + priv->i2c_props.adap = t->i2c.adapter; + + tda8295_i2c_bridge(t, 1); + /* probe for tuner chip */ + tuners_found = 0; + tuner_addrs = 0; + for (i = 0x60; i <= 0x63; i++) { + msg.addr = i; + ret = i2c_transfer(priv->i2c_props.adap, &msg, 1); + if (ret == 1) { + tuners_found++; + tuner_addrs = (tuner_addrs << 8) + i; + } + } + /* if there is more than one tuner, we expect the right one is + behind the bridge and we choose the highest address that doesn't + give a response now + */ + tda8295_i2c_bridge(t, 0); + if (tuners_found > 1) + for (i = 0; i < tuners_found; i++) { + msg.addr = tuner_addrs & 0xff; + ret = i2c_transfer(priv->i2c_props.adap, &msg, 1); + if (ret == 1) + tuner_addrs = tuner_addrs >> 8; + else + break; + } + if (tuner_addrs == 0) { + tuner_addrs = 0x60; + tuner_info("could not clearly identify tuner address, " + "defaulting to %x\n", tuner_addrs); + } else { + tuner_addrs = tuner_addrs & 0xff; + tuner_info("setting tuner address to %x\n", tuner_addrs); + } + priv->tda827x_addr = tuner_addrs; + msg.addr = tuner_addrs; + + tda8295_i2c_bridge(t, 1); + ret = i2c_transfer(priv->i2c_props.adap, &msg, 1); + tda8295_i2c_bridge(t, 0); + if (ret != 1) + tuner_warn("TDA827x access failed!\n"); + if ((data & 0x3c) == 0) { + strlcpy(t->i2c.name, "tda8295+18271", sizeof(t->i2c.name)); + tda18271_attach(&t->fe, priv->tda827x_addr, + priv->i2c_props.adap); + priv->tda827x_ver = 4; + } else { + strlcpy(t->i2c.name, "tda8295+75a", sizeof(t->i2c.name)); + tda827x_attach(&t->fe, priv->tda827x_addr, + priv->i2c_props.adap, &priv->cfg); + + /* FIXME: tda827x module doesn't probe the tuner until + * tda827x_initial_sleep is called + */ + if (t->fe.ops.tuner_ops.sleep) + t->fe.ops.tuner_ops.sleep(&t->fe); + priv->tda827x_ver = 2; + } + priv->tda827x_ver |= 1; /* signifies 8295 vs 8290 */ + tuner_info("type set to %s\n", t->i2c.name); + + memcpy(&t->ops, &tda8295_tuner_ops, sizeof(struct tuner_operations)); + + priv->cfg.tda827x_lpsel = 0; + t->mode = V4L2_TUNER_ANALOG_TV; + + tda8295_init_if(t); + return 0; +} +EXPORT_SYMBOL_GPL(tda8295_attach); int tda8290_probe(struct tuner *t) { @@ -434,12 +743,10 @@ int tda8290_probe(struct tuner *t) tuner_i2c_xfer_send(&i2c_props, restore_9886, 3); return -1; } - EXPORT_SYMBOL_GPL(tda8290_probe); -EXPORT_SYMBOL_GPL(tda8290_attach); MODULE_DESCRIPTION("Philips TDA8290 + TDA8275 / TDA8275a tuner driver"); -MODULE_AUTHOR("Gerd Knorr, Hartmut Hackmann"); +MODULE_AUTHOR("Gerd Knorr, Hartmut Hackmann, Michael Krufky"); MODULE_LICENSE("GPL"); /* |