^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) // For Philips TEA5761 FM Chip
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) // I2C address is always 0x20 (0x10 at 7-bit mode).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) //
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) // Copyright (c) 2005-2007 Mauro Carvalho Chehab <mchehab@kernel.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/videodev2.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <media/tuner.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include "tuner-i2c.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include "tea5761.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) static int debug;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) module_param(debug, int, 0644);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) MODULE_PARM_DESC(debug, "enable verbose debug messages");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) struct tea5761_priv {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) struct tuner_i2c_props i2c_props;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) u32 frequency;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) bool standby;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) /*****************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) /***************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * TEA5761HN I2C registers *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) ***************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) /* INTREG - Read: bytes 0 and 1 / Write: byte 0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) /* first byte for reading */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define TEA5761_INTREG_IFFLAG 0x10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define TEA5761_INTREG_LEVFLAG 0x8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #define TEA5761_INTREG_FRRFLAG 0x2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define TEA5761_INTREG_BLFLAG 0x1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) /* second byte for reading / byte for writing */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #define TEA5761_INTREG_IFMSK 0x10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #define TEA5761_INTREG_LEVMSK 0x8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #define TEA5761_INTREG_FRMSK 0x2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #define TEA5761_INTREG_BLMSK 0x1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) /* FRQSET - Read: bytes 2 and 3 / Write: byte 1 and 2 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) /* First byte */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #define TEA5761_FRQSET_SEARCH_UP 0x80 /* 1=Station search from botton to up */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #define TEA5761_FRQSET_SEARCH_MODE 0x40 /* 1=Search mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) /* Bits 0-5 for divider MSB */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) /* Second byte */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) /* Bits 0-7 for divider LSB */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) /* TNCTRL - Read: bytes 4 and 5 / Write: Bytes 3 and 4 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) /* first byte */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) #define TEA5761_TNCTRL_PUPD_0 0x40 /* Power UP/Power Down MSB */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) #define TEA5761_TNCTRL_BLIM 0X20 /* 1= Japan Frequencies, 0= European frequencies */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) #define TEA5761_TNCTRL_SWPM 0x10 /* 1= software port is FRRFLAG */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) #define TEA5761_TNCTRL_IFCTC 0x08 /* 1= IF count time 15.02 ms, 0= IF count time 2.02 ms */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) #define TEA5761_TNCTRL_AFM 0x04
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) #define TEA5761_TNCTRL_SMUTE 0x02 /* 1= Soft mute */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) #define TEA5761_TNCTRL_SNC 0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) /* second byte */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) #define TEA5761_TNCTRL_MU 0x80 /* 1=Hard mute */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) #define TEA5761_TNCTRL_SSL_1 0x40
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) #define TEA5761_TNCTRL_SSL_0 0x20
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) #define TEA5761_TNCTRL_HLSI 0x10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) #define TEA5761_TNCTRL_MST 0x08 /* 1 = mono */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) #define TEA5761_TNCTRL_SWP 0x04
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) #define TEA5761_TNCTRL_DTC 0x02 /* 1 = deemphasis 50 us, 0 = deemphasis 75 us */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) #define TEA5761_TNCTRL_AHLSI 0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) /* FRQCHECK - Read: bytes 6 and 7 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) /* First byte */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) /* Bits 0-5 for divider MSB */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) /* Second byte */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) /* Bits 0-7 for divider LSB */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) /* TUNCHECK - Read: bytes 8 and 9 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) /* First byte */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) #define TEA5761_TUNCHECK_IF_MASK 0x7e /* IF count */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) #define TEA5761_TUNCHECK_TUNTO 0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) /* Second byte */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) #define TEA5761_TUNCHECK_LEV_MASK 0xf0 /* Level Count */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) #define TEA5761_TUNCHECK_LD 0x08
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) #define TEA5761_TUNCHECK_STEREO 0x04
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) /* TESTREG - Read: bytes 10 and 11 / Write: bytes 5 and 6 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) /* All zero = no test mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) /* MANID - Read: bytes 12 and 13 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) /* First byte - should be 0x10 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) #define TEA5767_MANID_VERSION_MASK 0xf0 /* Version = 1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) #define TEA5767_MANID_ID_MSB_MASK 0x0f /* Manufacurer ID - should be 0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) /* Second byte - Should be 0x2b */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) #define TEA5767_MANID_ID_LSB_MASK 0xfe /* Manufacturer ID - should be 0x15 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) #define TEA5767_MANID_IDAV 0x01 /* 1 = Chip has ID, 0 = Chip has no ID */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) /* Chip ID - Read: bytes 14 and 15 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) /* First byte - should be 0x57 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) /* Second byte - should be 0x61 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) /*****************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) #define FREQ_OFFSET 0 /* for TEA5767, it is 700 to give the right freq */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) static void tea5761_status_dump(unsigned char *buffer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) unsigned int div, frq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) div = ((buffer[2] & 0x3f) << 8) | buffer[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) frq = 1000 * (div * 32768 / 1000 + FREQ_OFFSET + 225) / 4; /* Freq in KHz */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) printk(KERN_INFO "tea5761: Frequency %d.%03d KHz (divider = 0x%04x)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) frq / 1000, frq % 1000, div);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) /* Freq should be specifyed at 62.5 Hz */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) static int __set_radio_freq(struct dvb_frontend *fe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) unsigned int freq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) bool mono)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) struct tea5761_priv *priv = fe->tuner_priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) unsigned int frq = freq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) unsigned char buffer[7] = {0, 0, 0, 0, 0, 0, 0 };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) unsigned div;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) tuner_dbg("radio freq counter %d\n", frq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) if (priv->standby) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) tuner_dbg("TEA5761 set to standby mode\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) buffer[5] |= TEA5761_TNCTRL_MU;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) buffer[4] |= TEA5761_TNCTRL_PUPD_0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) if (mono) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) tuner_dbg("TEA5761 set to mono\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) buffer[5] |= TEA5761_TNCTRL_MST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) tuner_dbg("TEA5761 set to stereo\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) div = (1000 * (frq * 4 / 16 + 700 + 225) ) >> 15;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) buffer[1] = (div >> 8) & 0x3f;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) buffer[2] = div & 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) if (debug)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) tea5761_status_dump(buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) if (7 != (rc = tuner_i2c_xfer_send(&priv->i2c_props, buffer, 7)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) tuner_warn("i2c i/o error: rc == %d (should be 5)\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) priv->frequency = frq * 125 / 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) static int set_radio_freq(struct dvb_frontend *fe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) struct analog_parameters *params)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) struct tea5761_priv *priv = fe->analog_demod_priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) priv->standby = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) return __set_radio_freq(fe, params->frequency,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) params->audmode == V4L2_TUNER_MODE_MONO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) static int set_radio_sleep(struct dvb_frontend *fe)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) struct tea5761_priv *priv = fe->analog_demod_priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) priv->standby = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) return __set_radio_freq(fe, priv->frequency, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) static int tea5761_read_status(struct dvb_frontend *fe, char *buffer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) struct tea5761_priv *priv = fe->tuner_priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) memset(buffer, 0, 16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) if (16 != (rc = tuner_i2c_xfer_recv(&priv->i2c_props, buffer, 16))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) tuner_warn("i2c i/o error: rc == %d (should be 16)\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) return -EREMOTEIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) static inline int tea5761_signal(struct dvb_frontend *fe, const char *buffer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) struct tea5761_priv *priv = fe->tuner_priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) int signal = ((buffer[9] & TEA5761_TUNCHECK_LEV_MASK) << (13 - 4));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) tuner_dbg("Signal strength: %d\n", signal);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) return signal;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) static inline int tea5761_stereo(struct dvb_frontend *fe, const char *buffer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) struct tea5761_priv *priv = fe->tuner_priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) int stereo = buffer[9] & TEA5761_TUNCHECK_STEREO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) tuner_dbg("Radio ST GET = %02x\n", stereo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) return (stereo ? V4L2_TUNER_SUB_STEREO : 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) static int tea5761_get_status(struct dvb_frontend *fe, u32 *status)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) unsigned char buffer[16];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) *status = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) if (0 == tea5761_read_status(fe, buffer)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) if (tea5761_signal(fe, buffer))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) *status = TUNER_STATUS_LOCKED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) if (tea5761_stereo(fe, buffer))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) *status |= TUNER_STATUS_STEREO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) static int tea5761_get_rf_strength(struct dvb_frontend *fe, u16 *strength)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) unsigned char buffer[16];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) *strength = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) if (0 == tea5761_read_status(fe, buffer))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) *strength = tea5761_signal(fe, buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) int tea5761_autodetection(struct i2c_adapter* i2c_adap, u8 i2c_addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) unsigned char buffer[16];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) struct tuner_i2c_props i2c = { .adap = i2c_adap, .addr = i2c_addr };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) if (16 != (rc = tuner_i2c_xfer_recv(&i2c, buffer, 16))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) printk(KERN_WARNING "it is not a TEA5761. Received %i chars.\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) if ((buffer[13] != 0x2b) || (buffer[14] != 0x57) || (buffer[15] != 0x061)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) printk(KERN_WARNING "Manufacturer ID= 0x%02x, Chip ID = %02x%02x. It is not a TEA5761\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) buffer[13], buffer[14], buffer[15]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) printk(KERN_WARNING "tea5761: TEA%02x%02x detected. Manufacturer ID= 0x%02x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) buffer[14], buffer[15], buffer[13]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) static void tea5761_release(struct dvb_frontend *fe)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) kfree(fe->tuner_priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) fe->tuner_priv = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) static int tea5761_get_frequency(struct dvb_frontend *fe, u32 *frequency)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) struct tea5761_priv *priv = fe->tuner_priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) *frequency = priv->frequency;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) static const struct dvb_tuner_ops tea5761_tuner_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) .info = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) .name = "tea5761", // Philips TEA5761HN FM Radio
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) .set_analog_params = set_radio_freq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) .sleep = set_radio_sleep,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) .release = tea5761_release,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) .get_frequency = tea5761_get_frequency,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) .get_status = tea5761_get_status,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) .get_rf_strength = tea5761_get_rf_strength,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) struct dvb_frontend *tea5761_attach(struct dvb_frontend *fe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) struct i2c_adapter* i2c_adap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) u8 i2c_addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) struct tea5761_priv *priv = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) if (tea5761_autodetection(i2c_adap, i2c_addr) != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) priv = kzalloc(sizeof(struct tea5761_priv), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) if (priv == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) fe->tuner_priv = priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) priv->i2c_props.addr = i2c_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) priv->i2c_props.adap = i2c_adap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) priv->i2c_props.name = "tea5761";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) memcpy(&fe->ops.tuner_ops, &tea5761_tuner_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) sizeof(struct dvb_tuner_ops));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) tuner_info("type set to %s\n", "Philips TEA5761HN FM Radio");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) return fe;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) EXPORT_SYMBOL_GPL(tea5761_attach);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) EXPORT_SYMBOL_GPL(tea5761_autodetection);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) MODULE_DESCRIPTION("Philips TEA5761 FM tuner driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@kernel.org>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) MODULE_LICENSE("GPL v2");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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