diff options
Diffstat (limited to 'drivers/media/tuners/tda9887.c')
-rw-r--r-- | drivers/media/tuners/tda9887.c | 717 |
1 files changed, 717 insertions, 0 deletions
diff --git a/drivers/media/tuners/tda9887.c b/drivers/media/tuners/tda9887.c new file mode 100644 index 0000000..cdb645d --- /dev/null +++ b/drivers/media/tuners/tda9887.c @@ -0,0 +1,717 @@ +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/i2c.h> +#include <linux/types.h> +#include <linux/init.h> +#include <linux/errno.h> +#include <linux/delay.h> +#include <linux/videodev2.h> +#include <media/v4l2-common.h> +#include <media/tuner.h> +#include "tuner-i2c.h" +#include "tda9887.h" + + +/* Chips: + TDA9885 (PAL, NTSC) + TDA9886 (PAL, SECAM, NTSC) + TDA9887 (PAL, SECAM, NTSC, FM Radio) + + Used as part of several tuners +*/ + +static int debug; +module_param(debug, int, 0644); +MODULE_PARM_DESC(debug, "enable verbose debug messages"); + +static DEFINE_MUTEX(tda9887_list_mutex); +static LIST_HEAD(hybrid_tuner_instance_list); + +struct tda9887_priv { + struct tuner_i2c_props i2c_props; + struct list_head hybrid_tuner_instance_list; + + unsigned char data[4]; + unsigned int config; + unsigned int mode; + unsigned int audmode; + v4l2_std_id std; + + bool standby; +}; + +/* ---------------------------------------------------------------------- */ + +#define UNSET (-1U) + +struct tvnorm { + v4l2_std_id std; + char *name; + unsigned char b; + unsigned char c; + unsigned char e; +}; + +/* ---------------------------------------------------------------------- */ + +// +// TDA defines +// + +//// first reg (b) +#define cVideoTrapBypassOFF 0x00 // bit b0 +#define cVideoTrapBypassON 0x01 // bit b0 + +#define cAutoMuteFmInactive 0x00 // bit b1 +#define cAutoMuteFmActive 0x02 // bit b1 + +#define cIntercarrier 0x00 // bit b2 +#define cQSS 0x04 // bit b2 + +#define cPositiveAmTV 0x00 // bit b3:4 +#define cFmRadio 0x08 // bit b3:4 +#define cNegativeFmTV 0x10 // bit b3:4 + + +#define cForcedMuteAudioON 0x20 // bit b5 +#define cForcedMuteAudioOFF 0x00 // bit b5 + +#define cOutputPort1Active 0x00 // bit b6 +#define cOutputPort1Inactive 0x40 // bit b6 + +#define cOutputPort2Active 0x00 // bit b7 +#define cOutputPort2Inactive 0x80 // bit b7 + + +//// second reg (c) +#define cDeemphasisOFF 0x00 // bit c5 +#define cDeemphasisON 0x20 // bit c5 + +#define cDeemphasis75 0x00 // bit c6 +#define cDeemphasis50 0x40 // bit c6 + +#define cAudioGain0 0x00 // bit c7 +#define cAudioGain6 0x80 // bit c7 + +#define cTopMask 0x1f // bit c0:4 +#define cTopDefault 0x10 // bit c0:4 + +//// third reg (e) +#define cAudioIF_4_5 0x00 // bit e0:1 +#define cAudioIF_5_5 0x01 // bit e0:1 +#define cAudioIF_6_0 0x02 // bit e0:1 +#define cAudioIF_6_5 0x03 // bit e0:1 + + +#define cVideoIFMask 0x1c // bit e2:4 +/* Video IF selection in TV Mode (bit B3=0) */ +#define cVideoIF_58_75 0x00 // bit e2:4 +#define cVideoIF_45_75 0x04 // bit e2:4 +#define cVideoIF_38_90 0x08 // bit e2:4 +#define cVideoIF_38_00 0x0C // bit e2:4 +#define cVideoIF_33_90 0x10 // bit e2:4 +#define cVideoIF_33_40 0x14 // bit e2:4 +#define cRadioIF_45_75 0x18 // bit e2:4 +#define cRadioIF_38_90 0x1C // bit e2:4 + +/* IF1 selection in Radio Mode (bit B3=1) */ +#define cRadioIF_33_30 0x00 // bit e2,4 (also 0x10,0x14) +#define cRadioIF_41_30 0x04 // bit e2,4 + +/* Output of AFC pin in radio mode when bit E7=1 */ +#define cRadioAGC_SIF 0x00 // bit e3 +#define cRadioAGC_FM 0x08 // bit e3 + +#define cTunerGainNormal 0x00 // bit e5 +#define cTunerGainLow 0x20 // bit e5 + +#define cGating_18 0x00 // bit e6 +#define cGating_36 0x40 // bit e6 + +#define cAgcOutON 0x80 // bit e7 +#define cAgcOutOFF 0x00 // bit e7 + +/* ---------------------------------------------------------------------- */ + +static struct tvnorm tvnorms[] = { + { + .std = V4L2_STD_PAL_BG | V4L2_STD_PAL_H | V4L2_STD_PAL_N, + .name = "PAL-BGHN", + .b = ( cNegativeFmTV | + cQSS ), + .c = ( cDeemphasisON | + cDeemphasis50 | + cTopDefault), + .e = ( cGating_36 | + cAudioIF_5_5 | + cVideoIF_38_90 ), + },{ + .std = V4L2_STD_PAL_I, + .name = "PAL-I", + .b = ( cNegativeFmTV | + cQSS ), + .c = ( cDeemphasisON | + cDeemphasis50 | + cTopDefault), + .e = ( cGating_36 | + cAudioIF_6_0 | + cVideoIF_38_90 ), + },{ + .std = V4L2_STD_PAL_DK, + .name = "PAL-DK", + .b = ( cNegativeFmTV | + cQSS ), + .c = ( cDeemphasisON | + cDeemphasis50 | + cTopDefault), + .e = ( cGating_36 | + cAudioIF_6_5 | + cVideoIF_38_90 ), + },{ + .std = V4L2_STD_PAL_M | V4L2_STD_PAL_Nc, + .name = "PAL-M/Nc", + .b = ( cNegativeFmTV | + cQSS ), + .c = ( cDeemphasisON | + cDeemphasis75 | + cTopDefault), + .e = ( cGating_36 | + cAudioIF_4_5 | + cVideoIF_45_75 ), + },{ + .std = V4L2_STD_SECAM_B | V4L2_STD_SECAM_G | V4L2_STD_SECAM_H, + .name = "SECAM-BGH", + .b = ( cNegativeFmTV | + cQSS ), + .c = ( cTopDefault), + .e = ( cAudioIF_5_5 | + cVideoIF_38_90 ), + },{ + .std = V4L2_STD_SECAM_L, + .name = "SECAM-L", + .b = ( cPositiveAmTV | + cQSS ), + .c = ( cTopDefault), + .e = ( cGating_36 | + cAudioIF_6_5 | + cVideoIF_38_90 ), + },{ + .std = V4L2_STD_SECAM_LC, + .name = "SECAM-L'", + .b = ( cOutputPort2Inactive | + cPositiveAmTV | + cQSS ), + .c = ( cTopDefault), + .e = ( cGating_36 | + cAudioIF_6_5 | + cVideoIF_33_90 ), + },{ + .std = V4L2_STD_SECAM_DK, + .name = "SECAM-DK", + .b = ( cNegativeFmTV | + cQSS ), + .c = ( cDeemphasisON | + cDeemphasis50 | + cTopDefault), + .e = ( cGating_36 | + cAudioIF_6_5 | + cVideoIF_38_90 ), + },{ + .std = V4L2_STD_NTSC_M | V4L2_STD_NTSC_M_KR, + .name = "NTSC-M", + .b = ( cNegativeFmTV | + cQSS ), + .c = ( cDeemphasisON | + cDeemphasis75 | + cTopDefault), + .e = ( cGating_36 | + cAudioIF_4_5 | + cVideoIF_45_75 ), + },{ + .std = V4L2_STD_NTSC_M_JP, + .name = "NTSC-M-JP", + .b = ( cNegativeFmTV | + cQSS ), + .c = ( cDeemphasisON | + cDeemphasis50 | + cTopDefault), + .e = ( cGating_36 | + cAudioIF_4_5 | + cVideoIF_58_75 ), + } +}; + +static struct tvnorm radio_stereo = { + .name = "Radio Stereo", + .b = ( cFmRadio | + cQSS ), + .c = ( cDeemphasisOFF | + cAudioGain6 | + cTopDefault), + .e = ( cTunerGainLow | + cAudioIF_5_5 | + cRadioIF_38_90 ), +}; + +static struct tvnorm radio_mono = { + .name = "Radio Mono", + .b = ( cFmRadio | + cQSS ), + .c = ( cDeemphasisON | + cDeemphasis75 | + cTopDefault), + .e = ( cTunerGainLow | + cAudioIF_5_5 | + cRadioIF_38_90 ), +}; + +/* ---------------------------------------------------------------------- */ + +static void dump_read_message(struct dvb_frontend *fe, unsigned char *buf) +{ + struct tda9887_priv *priv = fe->analog_demod_priv; + + static char *afc[16] = { + "- 12.5 kHz", + "- 37.5 kHz", + "- 62.5 kHz", + "- 87.5 kHz", + "-112.5 kHz", + "-137.5 kHz", + "-162.5 kHz", + "-187.5 kHz [min]", + "+187.5 kHz [max]", + "+162.5 kHz", + "+137.5 kHz", + "+112.5 kHz", + "+ 87.5 kHz", + "+ 62.5 kHz", + "+ 37.5 kHz", + "+ 12.5 kHz", + }; + tuner_info("read: 0x%2x\n", buf[0]); + tuner_info(" after power on : %s\n", (buf[0] & 0x01) ? "yes" : "no"); + tuner_info(" afc : %s\n", afc[(buf[0] >> 1) & 0x0f]); + tuner_info(" fmif level : %s\n", (buf[0] & 0x20) ? "high" : "low"); + tuner_info(" afc window : %s\n", (buf[0] & 0x40) ? "in" : "out"); + tuner_info(" vfi level : %s\n", (buf[0] & 0x80) ? "high" : "low"); +} + +static void dump_write_message(struct dvb_frontend *fe, unsigned char *buf) +{ + struct tda9887_priv *priv = fe->analog_demod_priv; + + static char *sound[4] = { + "AM/TV", + "FM/radio", + "FM/TV", + "FM/radio" + }; + static char *adjust[32] = { + "-16", "-15", "-14", "-13", "-12", "-11", "-10", "-9", + "-8", "-7", "-6", "-5", "-4", "-3", "-2", "-1", + "0", "+1", "+2", "+3", "+4", "+5", "+6", "+7", + "+8", "+9", "+10", "+11", "+12", "+13", "+14", "+15" + }; + static char *deemph[4] = { + "no", "no", "75", "50" + }; + static char *carrier[4] = { + "4.5 MHz", + "5.5 MHz", + "6.0 MHz", + "6.5 MHz / AM" + }; + static char *vif[8] = { + "58.75 MHz", + "45.75 MHz", + "38.9 MHz", + "38.0 MHz", + "33.9 MHz", + "33.4 MHz", + "45.75 MHz + pin13", + "38.9 MHz + pin13", + }; + static char *rif[4] = { + "44 MHz", + "52 MHz", + "52 MHz", + "44 MHz", + }; + + tuner_info("write: byte B 0x%02x\n", buf[1]); + tuner_info(" B0 video mode : %s\n", + (buf[1] & 0x01) ? "video trap" : "sound trap"); + tuner_info(" B1 auto mute fm : %s\n", + (buf[1] & 0x02) ? "yes" : "no"); + tuner_info(" B2 carrier mode : %s\n", + (buf[1] & 0x04) ? "QSS" : "Intercarrier"); + tuner_info(" B3-4 tv sound/radio : %s\n", + sound[(buf[1] & 0x18) >> 3]); + tuner_info(" B5 force mute audio: %s\n", + (buf[1] & 0x20) ? "yes" : "no"); + tuner_info(" B6 output port 1 : %s\n", + (buf[1] & 0x40) ? "high (inactive)" : "low (active)"); + tuner_info(" B7 output port 2 : %s\n", + (buf[1] & 0x80) ? "high (inactive)" : "low (active)"); + + tuner_info("write: byte C 0x%02x\n", buf[2]); + tuner_info(" C0-4 top adjustment : %s dB\n", + adjust[buf[2] & 0x1f]); + tuner_info(" C5-6 de-emphasis : %s\n", + deemph[(buf[2] & 0x60) >> 5]); + tuner_info(" C7 audio gain : %s\n", + (buf[2] & 0x80) ? "-6" : "0"); + + tuner_info("write: byte E 0x%02x\n", buf[3]); + tuner_info(" E0-1 sound carrier : %s\n", + carrier[(buf[3] & 0x03)]); + tuner_info(" E6 l pll gating : %s\n", + (buf[3] & 0x40) ? "36" : "13"); + + if (buf[1] & 0x08) { + /* radio */ + tuner_info(" E2-4 video if : %s\n", + rif[(buf[3] & 0x0c) >> 2]); + tuner_info(" E7 vif agc output : %s\n", + (buf[3] & 0x80) + ? ((buf[3] & 0x10) ? "fm-agc radio" : + "sif-agc radio") + : "fm radio carrier afc"); + } else { + /* video */ + tuner_info(" E2-4 video if : %s\n", + vif[(buf[3] & 0x1c) >> 2]); + tuner_info(" E5 tuner gain : %s\n", + (buf[3] & 0x80) + ? ((buf[3] & 0x20) ? "external" : "normal") + : ((buf[3] & 0x20) ? "minimum" : "normal")); + tuner_info(" E7 vif agc output : %s\n", + (buf[3] & 0x80) ? ((buf[3] & 0x20) + ? "pin3 port, pin22 vif agc out" + : "pin22 port, pin3 vif acg ext in") + : "pin3+pin22 port"); + } + tuner_info("--\n"); +} + +/* ---------------------------------------------------------------------- */ + +static int tda9887_set_tvnorm(struct dvb_frontend *fe) +{ + struct tda9887_priv *priv = fe->analog_demod_priv; + struct tvnorm *norm = NULL; + char *buf = priv->data; + int i; + + if (priv->mode == V4L2_TUNER_RADIO) { + if (priv->audmode == V4L2_TUNER_MODE_MONO) + norm = &radio_mono; + else + norm = &radio_stereo; + } else { + for (i = 0; i < ARRAY_SIZE(tvnorms); i++) { + if (tvnorms[i].std & priv->std) { + norm = tvnorms+i; + break; + } + } + } + if (NULL == norm) { + tuner_dbg("Unsupported tvnorm entry - audio muted\n"); + return -1; + } + + tuner_dbg("configure for: %s\n", norm->name); + buf[1] = norm->b; + buf[2] = norm->c; + buf[3] = norm->e; + return 0; +} + +static unsigned int port1 = UNSET; +static unsigned int port2 = UNSET; +static unsigned int qss = UNSET; +static unsigned int adjust = UNSET; + +module_param(port1, int, 0644); +module_param(port2, int, 0644); +module_param(qss, int, 0644); +module_param(adjust, int, 0644); + +static int tda9887_set_insmod(struct dvb_frontend *fe) +{ + struct tda9887_priv *priv = fe->analog_demod_priv; + char *buf = priv->data; + + if (UNSET != port1) { + if (port1) + buf[1] |= cOutputPort1Inactive; + else + buf[1] &= ~cOutputPort1Inactive; + } + if (UNSET != port2) { + if (port2) + buf[1] |= cOutputPort2Inactive; + else + buf[1] &= ~cOutputPort2Inactive; + } + + if (UNSET != qss) { + if (qss) + buf[1] |= cQSS; + else + buf[1] &= ~cQSS; + } + + if (adjust < 0x20) { + buf[2] &= ~cTopMask; + buf[2] |= adjust; + } + return 0; +} + +static int tda9887_do_config(struct dvb_frontend *fe) +{ + struct tda9887_priv *priv = fe->analog_demod_priv; + char *buf = priv->data; + + if (priv->config & TDA9887_PORT1_ACTIVE) + buf[1] &= ~cOutputPort1Inactive; + if (priv->config & TDA9887_PORT1_INACTIVE) + buf[1] |= cOutputPort1Inactive; + if (priv->config & TDA9887_PORT2_ACTIVE) + buf[1] &= ~cOutputPort2Inactive; + if (priv->config & TDA9887_PORT2_INACTIVE) + buf[1] |= cOutputPort2Inactive; + + if (priv->config & TDA9887_QSS) + buf[1] |= cQSS; + if (priv->config & TDA9887_INTERCARRIER) + buf[1] &= ~cQSS; + + if (priv->config & TDA9887_AUTOMUTE) + buf[1] |= cAutoMuteFmActive; + if (priv->config & TDA9887_DEEMPHASIS_MASK) { + buf[2] &= ~0x60; + switch (priv->config & TDA9887_DEEMPHASIS_MASK) { + case TDA9887_DEEMPHASIS_NONE: + buf[2] |= cDeemphasisOFF; + break; + case TDA9887_DEEMPHASIS_50: + buf[2] |= cDeemphasisON | cDeemphasis50; + break; + case TDA9887_DEEMPHASIS_75: + buf[2] |= cDeemphasisON | cDeemphasis75; + break; + } + } + if (priv->config & TDA9887_TOP_SET) { + buf[2] &= ~cTopMask; + buf[2] |= (priv->config >> 8) & cTopMask; + } + if ((priv->config & TDA9887_INTERCARRIER_NTSC) && + (priv->std & V4L2_STD_NTSC)) + buf[1] &= ~cQSS; + if (priv->config & TDA9887_GATING_18) + buf[3] &= ~cGating_36; + + if (priv->mode == V4L2_TUNER_RADIO) { + if (priv->config & TDA9887_RIF_41_3) { + buf[3] &= ~cVideoIFMask; + buf[3] |= cRadioIF_41_30; + } + if (priv->config & TDA9887_GAIN_NORMAL) + buf[3] &= ~cTunerGainLow; + } + + return 0; +} + +/* ---------------------------------------------------------------------- */ + +static int tda9887_status(struct dvb_frontend *fe) +{ + struct tda9887_priv *priv = fe->analog_demod_priv; + unsigned char buf[1]; + int rc; + + memset(buf,0,sizeof(buf)); + if (1 != (rc = tuner_i2c_xfer_recv(&priv->i2c_props,buf,1))) + tuner_info("i2c i/o error: rc == %d (should be 1)\n", rc); + dump_read_message(fe, buf); + return 0; +} + +static void tda9887_configure(struct dvb_frontend *fe) +{ + struct tda9887_priv *priv = fe->analog_demod_priv; + int rc; + + memset(priv->data,0,sizeof(priv->data)); + tda9887_set_tvnorm(fe); + + /* A note on the port settings: + These settings tend to depend on the specifics of the board. + By default they are set to inactive (bit value 1) by this driver, + overwriting any changes made by the tvnorm. This means that it + is the responsibility of the module using the tda9887 to set + these values in case of changes in the tvnorm. + In many cases port 2 should be made active (0) when selecting + SECAM-L, and port 2 should remain inactive (1) for SECAM-L'. + + For the other standards the tda9887 application note says that + the ports should be set to active (0), but, again, that may + differ depending on the precise hardware configuration. + */ + priv->data[1] |= cOutputPort1Inactive; + priv->data[1] |= cOutputPort2Inactive; + + tda9887_do_config(fe); + tda9887_set_insmod(fe); + + if (priv->standby) + priv->data[1] |= cForcedMuteAudioON; + + tuner_dbg("writing: b=0x%02x c=0x%02x e=0x%02x\n", + priv->data[1], priv->data[2], priv->data[3]); + if (debug > 1) + dump_write_message(fe, priv->data); + + if (4 != (rc = tuner_i2c_xfer_send(&priv->i2c_props,priv->data,4))) + tuner_info("i2c i/o error: rc == %d (should be 4)\n", rc); + + if (debug > 2) { + msleep_interruptible(1000); + tda9887_status(fe); + } +} + +/* ---------------------------------------------------------------------- */ + +static void tda9887_tuner_status(struct dvb_frontend *fe) +{ + struct tda9887_priv *priv = fe->analog_demod_priv; + tuner_info("Data bytes: b=0x%02x c=0x%02x e=0x%02x\n", + priv->data[1], priv->data[2], priv->data[3]); +} + +static int tda9887_get_afc(struct dvb_frontend *fe) +{ + struct tda9887_priv *priv = fe->analog_demod_priv; + static int AFC_BITS_2_kHz[] = { + -12500, -37500, -62500, -97500, + -112500, -137500, -162500, -187500, + 187500, 162500, 137500, 112500, + 97500 , 62500, 37500 , 12500 + }; + int afc=0; + __u8 reg = 0; + + if (1 == tuner_i2c_xfer_recv(&priv->i2c_props,®,1)) + afc = AFC_BITS_2_kHz[(reg>>1)&0x0f]; + + return afc; +} + +static void tda9887_standby(struct dvb_frontend *fe) +{ + struct tda9887_priv *priv = fe->analog_demod_priv; + + priv->standby = true; + + tda9887_configure(fe); +} + +static void tda9887_set_params(struct dvb_frontend *fe, + struct analog_parameters *params) +{ + struct tda9887_priv *priv = fe->analog_demod_priv; + + priv->standby = false; + priv->mode = params->mode; + priv->audmode = params->audmode; + priv->std = params->std; + tda9887_configure(fe); +} + +static int tda9887_set_config(struct dvb_frontend *fe, void *priv_cfg) +{ + struct tda9887_priv *priv = fe->analog_demod_priv; + + priv->config = *(unsigned int *)priv_cfg; + tda9887_configure(fe); + + return 0; +} + +static void tda9887_release(struct dvb_frontend *fe) +{ + struct tda9887_priv *priv = fe->analog_demod_priv; + + mutex_lock(&tda9887_list_mutex); + + if (priv) + hybrid_tuner_release_state(priv); + + mutex_unlock(&tda9887_list_mutex); + + fe->analog_demod_priv = NULL; +} + +static struct analog_demod_ops tda9887_ops = { + .info = { + .name = "tda9887", + }, + .set_params = tda9887_set_params, + .standby = tda9887_standby, + .tuner_status = tda9887_tuner_status, + .get_afc = tda9887_get_afc, + .release = tda9887_release, + .set_config = tda9887_set_config, +}; + +struct dvb_frontend *tda9887_attach(struct dvb_frontend *fe, + struct i2c_adapter *i2c_adap, + u8 i2c_addr) +{ + struct tda9887_priv *priv = NULL; + int instance; + + mutex_lock(&tda9887_list_mutex); + + instance = hybrid_tuner_request_state(struct tda9887_priv, priv, + hybrid_tuner_instance_list, + i2c_adap, i2c_addr, "tda9887"); + switch (instance) { + case 0: + mutex_unlock(&tda9887_list_mutex); + return NULL; + case 1: + fe->analog_demod_priv = priv; + priv->standby = true; + tuner_info("tda988[5/6/7] found\n"); + break; + default: + fe->analog_demod_priv = priv; + break; + } + + mutex_unlock(&tda9887_list_mutex); + + memcpy(&fe->ops.analog_ops, &tda9887_ops, + sizeof(struct analog_demod_ops)); + + return fe; +} +EXPORT_SYMBOL_GPL(tda9887_attach); + +MODULE_LICENSE("GPL"); + +/* + * Overrides for Emacs so that we follow Linus's tabbing style. + * --------------------------------------------------------------------------- + * Local variables: + * c-basic-offset: 8 + * End: + */ |