| /* |
| * For Philips TEA5761 FM Chip |
| * I2C address is allways 0x20 (0x10 at 7-bit mode). |
| * |
| * Copyright (c) 2005-2007 Mauro Carvalho Chehab (mchehab@infradead.org) |
| * This code is placed under the terms of the GNUv2 General Public License |
| * |
| */ |
| |
| #include <linux/i2c.h> |
| #include <linux/videodev.h> |
| #include <linux/delay.h> |
| #include <media/tuner.h> |
| #include <media/tuner.h> |
| |
| #define PREFIX "TEA5761 " |
| |
| /* from tuner-core.c */ |
| extern int tuner_debug; |
| |
| /*****************************************************************************/ |
| |
| /*************************** |
| * TEA5761HN I2C registers * |
| ***************************/ |
| |
| /* INTREG - Read: bytes 0 and 1 / Write: byte 0 */ |
| |
| /* first byte for reading */ |
| #define TEA5761_INTREG_IFFLAG 0x10 |
| #define TEA5761_INTREG_LEVFLAG 0x8 |
| #define TEA5761_INTREG_FRRFLAG 0x2 |
| #define TEA5761_INTREG_BLFLAG 0x1 |
| |
| /* second byte for reading / byte for writing */ |
| #define TEA5761_INTREG_IFMSK 0x10 |
| #define TEA5761_INTREG_LEVMSK 0x8 |
| #define TEA5761_INTREG_FRMSK 0x2 |
| #define TEA5761_INTREG_BLMSK 0x1 |
| |
| /* FRQSET - Read: bytes 2 and 3 / Write: byte 1 and 2 */ |
| |
| /* First byte */ |
| #define TEA5761_FRQSET_SEARCH_UP 0x80 /* 1=Station search from botton to up */ |
| #define TEA5761_FRQSET_SEARCH_MODE 0x40 /* 1=Search mode */ |
| |
| /* Bits 0-5 for divider MSB */ |
| |
| /* Second byte */ |
| /* Bits 0-7 for divider LSB */ |
| |
| /* TNCTRL - Read: bytes 4 and 5 / Write: Bytes 3 and 4 */ |
| |
| /* first byte */ |
| |
| #define TEA5761_TNCTRL_PUPD_0 0x40 /* Power UP/Power Down MSB */ |
| #define TEA5761_TNCTRL_BLIM 0X20 /* 1= Japan Frequencies, 0= European frequencies */ |
| #define TEA5761_TNCTRL_SWPM 0x10 /* 1= software port is FRRFLAG */ |
| #define TEA5761_TNCTRL_IFCTC 0x08 /* 1= IF count time 15.02 ms, 0= IF count time 2.02 ms */ |
| #define TEA5761_TNCTRL_AFM 0x04 |
| #define TEA5761_TNCTRL_SMUTE 0x02 /* 1= Soft mute */ |
| #define TEA5761_TNCTRL_SNC 0x01 |
| |
| /* second byte */ |
| |
| #define TEA5761_TNCTRL_MU 0x80 /* 1=Hard mute */ |
| #define TEA5761_TNCTRL_SSL_1 0x40 |
| #define TEA5761_TNCTRL_SSL_0 0x20 |
| #define TEA5761_TNCTRL_HLSI 0x10 |
| #define TEA5761_TNCTRL_MST 0x08 /* 1 = mono */ |
| #define TEA5761_TNCTRL_SWP 0x04 |
| #define TEA5761_TNCTRL_DTC 0x02 /* 1 = deemphasis 50 us, 0 = deemphasis 75 us */ |
| #define TEA5761_TNCTRL_AHLSI 0x01 |
| |
| /* FRQCHECK - Read: bytes 6 and 7 */ |
| /* First byte */ |
| |
| /* Bits 0-5 for divider MSB */ |
| |
| /* Second byte */ |
| /* Bits 0-7 for divider LSB */ |
| |
| /* TUNCHECK - Read: bytes 8 and 9 */ |
| |
| /* First byte */ |
| #define TEA5761_TUNCHECK_IF_MASK 0x7e /* IF count */ |
| #define TEA5761_TUNCHECK_TUNTO 0x01 |
| |
| /* Second byte */ |
| #define TEA5761_TUNCHECK_LEV_MASK 0xf0 /* Level Count */ |
| #define TEA5761_TUNCHECK_LD 0x08 |
| #define TEA5761_TUNCHECK_STEREO 0x04 |
| |
| /* TESTREG - Read: bytes 10 and 11 / Write: bytes 5 and 6 */ |
| |
| /* All zero = no test mode */ |
| |
| /* MANID - Read: bytes 12 and 13 */ |
| |
| /* First byte - should be 0x10 */ |
| #define TEA5767_MANID_VERSION_MASK 0xf0 /* Version = 1 */ |
| #define TEA5767_MANID_ID_MSB_MASK 0x0f /* Manufacurer ID - should be 0 */ |
| |
| /* Second byte - Should be 0x2b */ |
| |
| #define TEA5767_MANID_ID_LSB_MASK 0xfe /* Manufacturer ID - should be 0x15 */ |
| #define TEA5767_MANID_IDAV 0x01 /* 1 = Chip has ID, 0 = Chip has no ID */ |
| |
| /* Chip ID - Read: bytes 14 and 15 */ |
| |
| /* First byte - should be 0x57 */ |
| |
| /* Second byte - should be 0x61 */ |
| |
| /*****************************************************************************/ |
| |
| static void set_tv_freq(struct i2c_client *c, unsigned int freq) |
| { |
| struct tuner *t = i2c_get_clientdata(c); |
| |
| tuner_warn("This tuner doesn't support TV freq.\n"); |
| } |
| |
| #define FREQ_OFFSET 0 /* for TEA5767, it is 700 to give the right freq */ |
| static void tea5761_status_dump(unsigned char *buffer) |
| { |
| unsigned int div, frq; |
| |
| div = ((buffer[2] & 0x3f) << 8) | buffer[3]; |
| |
| frq = 1000 * (div * 32768 / 1000 + FREQ_OFFSET + 225) / 4; /* Freq in KHz */ |
| |
| printk(PREFIX "Frequency %d.%03d KHz (divider = 0x%04x)\n", |
| frq / 1000, frq % 1000, div); |
| } |
| |
| /* Freq should be specifyed at 62.5 Hz */ |
| static void set_radio_freq(struct i2c_client *c, unsigned int frq) |
| { |
| struct tuner *t = i2c_get_clientdata(c); |
| unsigned char buffer[7] = {0, 0, 0, 0, 0, 0, 0 }; |
| unsigned div; |
| int rc; |
| |
| tuner_dbg (PREFIX "radio freq counter %d\n", frq); |
| |
| if (t->mode == T_STANDBY) { |
| tuner_dbg("TEA5761 set to standby mode\n"); |
| buffer[5] |= TEA5761_TNCTRL_MU; |
| } else { |
| buffer[4] |= TEA5761_TNCTRL_PUPD_0; |
| } |
| |
| |
| if (t->audmode == V4L2_TUNER_MODE_MONO) { |
| tuner_dbg("TEA5761 set to mono\n"); |
| buffer[5] |= TEA5761_TNCTRL_MST; |
| ; |
| } else { |
| tuner_dbg("TEA5761 set to stereo\n"); |
| } |
| |
| div = (1000 * (frq * 4 / 16 + 700 + 225) ) >> 15; |
| buffer[1] = (div >> 8) & 0x3f; |
| buffer[2] = div & 0xff; |
| |
| if (tuner_debug) |
| tea5761_status_dump(buffer); |
| |
| if (7 != (rc = i2c_master_send(c, buffer, 7))) |
| tuner_warn("i2c i/o error: rc == %d (should be 5)\n", rc); |
| } |
| |
| static int tea5761_signal(struct i2c_client *c) |
| { |
| unsigned char buffer[16]; |
| int rc; |
| struct tuner *t = i2c_get_clientdata(c); |
| |
| memset(buffer, 0, sizeof(buffer)); |
| if (16 != (rc = i2c_master_recv(c, buffer, 16))) |
| tuner_warn("i2c i/o error: rc == %d (should be 5)\n", rc); |
| |
| return ((buffer[9] & TEA5761_TUNCHECK_LEV_MASK) << (13 - 4)); |
| } |
| |
| static int tea5761_stereo(struct i2c_client *c) |
| { |
| unsigned char buffer[16]; |
| int rc; |
| struct tuner *t = i2c_get_clientdata(c); |
| |
| memset(buffer, 0, sizeof(buffer)); |
| if (16 != (rc = i2c_master_recv(c, buffer, 16))) |
| tuner_warn("i2c i/o error: rc == %d (should be 5)\n", rc); |
| |
| rc = buffer[9] & TEA5761_TUNCHECK_STEREO; |
| |
| tuner_dbg("TEA5761 radio ST GET = %02x\n", rc); |
| |
| return (rc ? V4L2_TUNER_SUB_STEREO : 0); |
| } |
| |
| int tea5761_autodetection(struct i2c_client *c) |
| { |
| unsigned char buffer[16]; |
| int rc; |
| struct tuner *t = i2c_get_clientdata(c); |
| |
| if (16 != (rc = i2c_master_recv(c, buffer, 16))) { |
| tuner_warn("it is not a TEA5761. Received %i chars.\n", rc); |
| return EINVAL; |
| } |
| |
| if (!((buffer[13] != 0x2b) || (buffer[14] != 0x57) || (buffer[15] != 0x061))) { |
| tuner_warn("Manufacturer ID= 0x%02x, Chip ID = %02x%02x. It is not a TEA5761\n",buffer[13],buffer[14],buffer[15]); |
| return EINVAL; |
| } |
| tuner_warn("TEA5761 detected.\n"); |
| return 0; |
| } |
| |
| int tea5761_tuner_init(struct i2c_client *c) |
| { |
| struct tuner *t = i2c_get_clientdata(c); |
| |
| if (tea5761_autodetection(c) == EINVAL) |
| return EINVAL; |
| |
| tuner_info("type set to %d (%s)\n", t->type, "Philips TEA5761HN FM Radio"); |
| strlcpy(c->name, "tea5761", sizeof(c->name)); |
| |
| t->set_tv_freq = set_tv_freq; |
| t->set_radio_freq = set_radio_freq; |
| t->has_signal = tea5761_signal; |
| t->is_stereo = tea5761_stereo; |
| |
| return (0); |
| } |