500 lines
13 KiB
C
500 lines
13 KiB
C
/*
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*
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* i2c tv tuner chip device driver
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* controls all those simple 4-control-bytes style tuners.
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*/
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#include <linux/delay.h>
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#include <linux/i2c.h>
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#include <linux/videodev.h>
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#include <media/tuner.h>
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#include <media/v4l2-common.h>
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static int offset = 0;
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module_param(offset, int, 0664);
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MODULE_PARM_DESC(offset,"Allows to specify an offset for tuner");
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/* ---------------------------------------------------------------------- */
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/* tv standard selection for Temic 4046 FM5
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this value takes the low bits of control byte 2
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from datasheet Rev.01, Feb.00
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standard BG I L L2 D
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picture IF 38.9 38.9 38.9 33.95 38.9
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sound 1 33.4 32.9 32.4 40.45 32.4
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sound 2 33.16
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NICAM 33.05 32.348 33.05 33.05
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*/
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#define TEMIC_SET_PAL_I 0x05
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#define TEMIC_SET_PAL_DK 0x09
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#define TEMIC_SET_PAL_L 0x0a // SECAM ?
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#define TEMIC_SET_PAL_L2 0x0b // change IF !
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#define TEMIC_SET_PAL_BG 0x0c
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/* tv tuner system standard selection for Philips FQ1216ME
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this value takes the low bits of control byte 2
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from datasheet "1999 Nov 16" (supersedes "1999 Mar 23")
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standard BG DK I L L`
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picture carrier 38.90 38.90 38.90 38.90 33.95
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colour 34.47 34.47 34.47 34.47 38.38
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sound 1 33.40 32.40 32.90 32.40 40.45
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sound 2 33.16 - - - -
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NICAM 33.05 33.05 32.35 33.05 39.80
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*/
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#define PHILIPS_SET_PAL_I 0x01 /* Bit 2 always zero !*/
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#define PHILIPS_SET_PAL_BGDK 0x09
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#define PHILIPS_SET_PAL_L2 0x0a
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#define PHILIPS_SET_PAL_L 0x0b
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/* system switching for Philips FI1216MF MK2
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from datasheet "1996 Jul 09",
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standard BG L L'
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picture carrier 38.90 38.90 33.95
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colour 34.47 34.37 38.38
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sound 1 33.40 32.40 40.45
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sound 2 33.16 - -
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NICAM 33.05 33.05 39.80
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*/
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#define PHILIPS_MF_SET_BG 0x01 /* Bit 2 must be zero, Bit 3 is system output */
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#define PHILIPS_MF_SET_PAL_L 0x03 // France
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#define PHILIPS_MF_SET_PAL_L2 0x02 // L'
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/* Control byte */
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#define TUNER_RATIO_MASK 0x06 /* Bit cb1:cb2 */
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#define TUNER_RATIO_SELECT_50 0x00
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#define TUNER_RATIO_SELECT_32 0x02
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#define TUNER_RATIO_SELECT_166 0x04
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#define TUNER_RATIO_SELECT_62 0x06
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#define TUNER_CHARGE_PUMP 0x40 /* Bit cb6 */
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/* Status byte */
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#define TUNER_POR 0x80
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#define TUNER_FL 0x40
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#define TUNER_MODE 0x38
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#define TUNER_AFC 0x07
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#define TUNER_SIGNAL 0x07
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#define TUNER_STEREO 0x10
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#define TUNER_PLL_LOCKED 0x40
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#define TUNER_STEREO_MK3 0x04
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/* ---------------------------------------------------------------------- */
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static int tuner_getstatus(struct i2c_client *c)
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{
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unsigned char byte;
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if (1 != i2c_master_recv(c,&byte,1))
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return 0;
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return byte;
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}
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static int tuner_signal(struct i2c_client *c)
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{
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return (tuner_getstatus(c) & TUNER_SIGNAL) << 13;
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}
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static int tuner_stereo(struct i2c_client *c)
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{
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int stereo, status;
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struct tuner *t = i2c_get_clientdata(c);
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status = tuner_getstatus (c);
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switch (t->type) {
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case TUNER_PHILIPS_FM1216ME_MK3:
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case TUNER_PHILIPS_FM1236_MK3:
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case TUNER_PHILIPS_FM1256_IH3:
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case TUNER_LG_NTSC_TAPE:
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stereo = ((status & TUNER_SIGNAL) == TUNER_STEREO_MK3);
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break;
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default:
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stereo = status & TUNER_STEREO;
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}
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return stereo;
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}
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/* ---------------------------------------------------------------------- */
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static void default_set_tv_freq(struct i2c_client *c, unsigned int freq)
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{
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struct tuner *t = i2c_get_clientdata(c);
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u8 config, cb, tuneraddr;
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u16 div;
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struct tunertype *tun;
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u8 buffer[4];
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int rc, IFPCoff, i, j;
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enum param_type desired_type;
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struct tuner_params *params;
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tun = &tuners[t->type];
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/* IFPCoff = Video Intermediate Frequency - Vif:
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940 =16*58.75 NTSC/J (Japan)
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732 =16*45.75 M/N STD
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704 =16*44 ATSC (at DVB code)
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632 =16*39.50 I U.K.
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622.4=16*38.90 B/G D/K I, L STD
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592 =16*37.00 D China
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590 =16.36.875 B Australia
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543.2=16*33.95 L' STD
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171.2=16*10.70 FM Radio (at set_radio_freq)
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*/
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if (t->std == V4L2_STD_NTSC_M_JP) {
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IFPCoff = 940;
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desired_type = TUNER_PARAM_TYPE_NTSC;
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} else if ((t->std & V4L2_STD_MN) &&
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!(t->std & ~V4L2_STD_MN)) {
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IFPCoff = 732;
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desired_type = TUNER_PARAM_TYPE_NTSC;
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} else if (t->std == V4L2_STD_SECAM_LC) {
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IFPCoff = 543;
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desired_type = TUNER_PARAM_TYPE_SECAM;
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} else {
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IFPCoff = 623;
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desired_type = TUNER_PARAM_TYPE_PAL;
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}
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for (j = 0; j < tun->count-1; j++) {
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if (desired_type != tun->params[j].type)
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continue;
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break;
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}
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/* use default tuner_params if desired_type not available */
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if (desired_type != tun->params[j].type) {
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tuner_dbg("IFPCoff = %d: tuner_params undefined for tuner %d\n",
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IFPCoff,t->type);
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j = 0;
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}
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params = &tun->params[j];
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for (i = 0; i < params->count; i++) {
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if (freq > params->ranges[i].limit)
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continue;
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break;
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}
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if (i == params->count) {
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tuner_dbg("TV frequency out of range (%d > %d)",
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freq, params->ranges[i - 1].limit);
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freq = params->ranges[--i].limit;
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}
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config = params->ranges[i].config;
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cb = params->ranges[i].cb;
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/* i == 0 -> VHF_LO
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* i == 1 -> VHF_HI
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* i == 2 -> UHF */
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tuner_dbg("tv: param %d, range %d\n",j,i);
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div=freq + IFPCoff + offset;
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tuner_dbg("Freq= %d.%02d MHz, V_IF=%d.%02d MHz, Offset=%d.%02d MHz, div=%0d\n",
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freq / 16, freq % 16 * 100 / 16,
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IFPCoff / 16, IFPCoff % 16 * 100 / 16,
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offset / 16, offset % 16 * 100 / 16,
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div);
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/* tv norm specific stuff for multi-norm tuners */
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switch (t->type) {
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case TUNER_PHILIPS_SECAM: // FI1216MF
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/* 0x01 -> ??? no change ??? */
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/* 0x02 -> PAL BDGHI / SECAM L */
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/* 0x04 -> ??? PAL others / SECAM others ??? */
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cb &= ~0x02;
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if (t->std & V4L2_STD_SECAM)
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cb |= 0x02;
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break;
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case TUNER_TEMIC_4046FM5:
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cb &= ~0x0f;
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if (t->std & V4L2_STD_PAL_BG) {
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cb |= TEMIC_SET_PAL_BG;
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} else if (t->std & V4L2_STD_PAL_I) {
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cb |= TEMIC_SET_PAL_I;
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} else if (t->std & V4L2_STD_PAL_DK) {
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cb |= TEMIC_SET_PAL_DK;
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} else if (t->std & V4L2_STD_SECAM_L) {
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cb |= TEMIC_SET_PAL_L;
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}
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break;
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case TUNER_PHILIPS_FQ1216ME:
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cb &= ~0x0f;
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if (t->std & (V4L2_STD_PAL_BG|V4L2_STD_PAL_DK)) {
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cb |= PHILIPS_SET_PAL_BGDK;
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} else if (t->std & V4L2_STD_PAL_I) {
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cb |= PHILIPS_SET_PAL_I;
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} else if (t->std & V4L2_STD_SECAM_L) {
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cb |= PHILIPS_SET_PAL_L;
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}
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break;
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case TUNER_PHILIPS_ATSC:
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/* 0x00 -> ATSC antenna input 1 */
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/* 0x01 -> ATSC antenna input 2 */
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/* 0x02 -> NTSC antenna input 1 */
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/* 0x03 -> NTSC antenna input 2 */
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cb &= ~0x03;
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if (!(t->std & V4L2_STD_ATSC))
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cb |= 2;
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/* FIXME: input */
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break;
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case TUNER_MICROTUNE_4042FI5:
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/* Set the charge pump for fast tuning */
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config |= TUNER_CHARGE_PUMP;
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break;
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case TUNER_PHILIPS_TUV1236D:
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/* 0x40 -> ATSC antenna input 1 */
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/* 0x48 -> ATSC antenna input 2 */
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/* 0x00 -> NTSC antenna input 1 */
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/* 0x08 -> NTSC antenna input 2 */
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buffer[0] = 0x14;
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buffer[1] = 0x00;
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buffer[2] = 0x17;
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buffer[3] = 0x00;
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cb &= ~0x40;
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if (t->std & V4L2_STD_ATSC) {
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cb |= 0x40;
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buffer[1] = 0x04;
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}
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/* set to the correct mode (analog or digital) */
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tuneraddr = c->addr;
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c->addr = 0x0a;
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if (2 != (rc = i2c_master_send(c,&buffer[0],2)))
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tuner_warn("i2c i/o error: rc == %d (should be 2)\n",rc);
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if (2 != (rc = i2c_master_send(c,&buffer[2],2)))
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tuner_warn("i2c i/o error: rc == %d (should be 2)\n",rc);
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c->addr = tuneraddr;
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/* FIXME: input */
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break;
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}
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if (params->cb_first_if_lower_freq && div < t->last_div) {
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buffer[0] = config;
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buffer[1] = cb;
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buffer[2] = (div>>8) & 0x7f;
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buffer[3] = div & 0xff;
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} else {
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buffer[0] = (div>>8) & 0x7f;
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buffer[1] = div & 0xff;
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buffer[2] = config;
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buffer[3] = cb;
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}
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t->last_div = div;
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if (params->has_tda9887) {
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int config = 0;
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int is_secam_l = (t->std & (V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC)) &&
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!(t->std & ~(V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC));
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if (t->std == V4L2_STD_SECAM_LC) {
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if (params->port1_active ^ params->port1_invert_for_secam_lc)
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config |= TDA9887_PORT1_ACTIVE;
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if (params->port2_active ^ params->port2_invert_for_secam_lc)
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config |= TDA9887_PORT2_ACTIVE;
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}
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else {
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if (params->port1_active)
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config |= TDA9887_PORT1_ACTIVE;
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if (params->port2_active)
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config |= TDA9887_PORT2_ACTIVE;
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}
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if (params->intercarrier_mode)
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config |= TDA9887_INTERCARRIER;
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if (is_secam_l) {
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if (i == 0 && params->default_top_secam_low)
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config |= TDA9887_TOP(params->default_top_secam_low);
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else if (i == 1 && params->default_top_secam_mid)
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config |= TDA9887_TOP(params->default_top_secam_mid);
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else if (params->default_top_secam_high)
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config |= TDA9887_TOP(params->default_top_secam_high);
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}
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else {
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if (i == 0 && params->default_top_low)
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config |= TDA9887_TOP(params->default_top_low);
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else if (i == 1 && params->default_top_mid)
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config |= TDA9887_TOP(params->default_top_mid);
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else if (params->default_top_high)
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config |= TDA9887_TOP(params->default_top_high);
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}
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if (params->default_pll_gating_18)
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config |= TDA9887_GATING_18;
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i2c_clients_command(c->adapter, TDA9887_SET_CONFIG, &config);
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}
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tuner_dbg("tv 0x%02x 0x%02x 0x%02x 0x%02x\n",
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buffer[0],buffer[1],buffer[2],buffer[3]);
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if (4 != (rc = i2c_master_send(c,buffer,4)))
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tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
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switch (t->type) {
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case TUNER_LG_TDVS_H06XF:
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/* Set the Auxiliary Byte. */
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buffer[0] = buffer[2];
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buffer[0] &= ~0x20;
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buffer[0] |= 0x18;
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buffer[1] = 0x20;
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tuner_dbg("tv 0x%02x 0x%02x\n",buffer[0],buffer[1]);
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if (2 != (rc = i2c_master_send(c,buffer,2)))
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tuner_warn("i2c i/o error: rc == %d (should be 2)\n",rc);
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break;
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case TUNER_MICROTUNE_4042FI5:
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{
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// FIXME - this may also work for other tuners
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unsigned long timeout = jiffies + msecs_to_jiffies(1);
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u8 status_byte = 0;
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/* Wait until the PLL locks */
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for (;;) {
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if (time_after(jiffies,timeout))
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return;
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if (1 != (rc = i2c_master_recv(c,&status_byte,1))) {
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tuner_warn("i2c i/o read error: rc == %d (should be 1)\n",rc);
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break;
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}
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if (status_byte & TUNER_PLL_LOCKED)
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break;
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udelay(10);
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}
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/* Set the charge pump for optimized phase noise figure */
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config &= ~TUNER_CHARGE_PUMP;
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buffer[0] = (div>>8) & 0x7f;
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buffer[1] = div & 0xff;
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buffer[2] = config;
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buffer[3] = cb;
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tuner_dbg("tv 0x%02x 0x%02x 0x%02x 0x%02x\n",
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buffer[0],buffer[1],buffer[2],buffer[3]);
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if (4 != (rc = i2c_master_send(c,buffer,4)))
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tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
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break;
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}
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}
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}
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static void default_set_radio_freq(struct i2c_client *c, unsigned int freq)
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{
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struct tunertype *tun;
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struct tuner *t = i2c_get_clientdata(c);
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u8 buffer[4];
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u16 div;
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int rc, j;
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enum param_type desired_type = TUNER_PARAM_TYPE_RADIO;
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struct tuner_params *params;
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tun = &tuners[t->type];
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for (j = 0; j < tun->count-1; j++) {
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if (desired_type != tun->params[j].type)
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continue;
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break;
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}
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/* use default tuner_params if desired_type not available */
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if (desired_type != tun->params[j].type)
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j = 0;
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div = (20 * freq / 16000) + (int)(20*10.7); /* IF 10.7 MHz */
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params = &tun->params[j];
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buffer[2] = (params->ranges[0].config & ~TUNER_RATIO_MASK) | TUNER_RATIO_SELECT_50; /* 50 kHz step */
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switch (t->type) {
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case TUNER_TENA_9533_DI:
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case TUNER_YMEC_TVF_5533MF:
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tuner_dbg ("This tuner doesn't have FM. Most cards has a TEA5767 for FM\n");
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return;
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case TUNER_PHILIPS_FM1216ME_MK3:
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case TUNER_PHILIPS_FM1236_MK3:
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case TUNER_PHILIPS_FMD1216ME_MK3:
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case TUNER_LG_NTSC_TAPE:
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buffer[3] = 0x19;
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break;
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case TUNER_TNF_5335MF:
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buffer[3] = 0x11;
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break;
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case TUNER_PHILIPS_FM1256_IH3:
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div = (20 * freq) / 16000 + (int)(33.3 * 20); /* IF 33.3 MHz */
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buffer[3] = 0x19;
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break;
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case TUNER_LG_PAL_FM:
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buffer[3] = 0xa5;
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break;
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case TUNER_MICROTUNE_4049FM5:
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div = (20 * freq) / 16000 + (int)(33.3 * 20); /* IF 33.3 MHz */
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buffer[3] = 0xa4;
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break;
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default:
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buffer[3] = 0xa4;
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break;
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}
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if (params->cb_first_if_lower_freq && div < t->last_div) {
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buffer[0] = buffer[2];
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buffer[1] = buffer[3];
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buffer[2] = (div>>8) & 0x7f;
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buffer[3] = div & 0xff;
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} else {
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buffer[0] = (div>>8) & 0x7f;
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buffer[1] = div & 0xff;
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}
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tuner_dbg("radio 0x%02x 0x%02x 0x%02x 0x%02x\n",
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buffer[0],buffer[1],buffer[2],buffer[3]);
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t->last_div = div;
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|
if (params->has_tda9887) {
|
|
int config = 0;
|
|
if (params->port1_active && !params->port1_fm_high_sensitivity)
|
|
config |= TDA9887_PORT1_ACTIVE;
|
|
if (params->port2_active && !params->port2_fm_high_sensitivity)
|
|
config |= TDA9887_PORT2_ACTIVE;
|
|
if (params->intercarrier_mode)
|
|
config |= TDA9887_INTERCARRIER;
|
|
/* if (params->port1_set_for_fm_mono)
|
|
config &= ~TDA9887_PORT1_ACTIVE;*/
|
|
i2c_clients_command(c->adapter, TDA9887_SET_CONFIG, &config);
|
|
}
|
|
if (4 != (rc = i2c_master_send(c,buffer,4)))
|
|
tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
|
|
}
|
|
|
|
int default_tuner_init(struct i2c_client *c)
|
|
{
|
|
struct tuner *t = i2c_get_clientdata(c);
|
|
|
|
tuner_info("type set to %d (%s)\n",
|
|
t->type, tuners[t->type].name);
|
|
strlcpy(c->name, tuners[t->type].name, sizeof(c->name));
|
|
|
|
t->set_tv_freq = default_set_tv_freq;
|
|
t->set_radio_freq = default_set_radio_freq;
|
|
t->has_signal = tuner_signal;
|
|
t->is_stereo = tuner_stereo;
|
|
t->standby = NULL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Overrides for Emacs so that we follow Linus's tabbing style.
|
|
* ---------------------------------------------------------------------------
|
|
* Local variables:
|
|
* c-basic-offset: 8
|
|
* End:
|
|
*/
|