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path: root/drivers/media/tuners/tda9887.c
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Diffstat (limited to 'drivers/media/tuners/tda9887.c')
-rw-r--r--drivers/media/tuners/tda9887.c717
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 000000000000..cdb645d57438
--- /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,&reg,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:
+ */
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-22 05:20:09 +0300