diff options
Diffstat (limited to 'drivers/media/video/tea5761.c')
| -rw-r--r-- | drivers/media/video/tea5761.c | 324 |
1 files changed, 0 insertions, 324 deletions
diff --git a/drivers/media/video/tea5761.c b/drivers/media/video/tea5761.c deleted file mode 100644 index b93cdef9ac73..000000000000 --- a/drivers/media/video/tea5761.c +++ /dev/null @@ -1,324 +0,0 @@ -/* - * 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/delay.h> -#include <linux/videodev.h> -#include <media/tuner.h> -#include "tuner-i2c.h" -#include "tea5761.h" - -static int debug; -module_param(debug, int, 0644); -MODULE_PARM_DESC(debug, "enable verbose debug messages"); - -struct tea5761_priv { - struct tuner_i2c_props i2c_props; - - u32 frequency; -}; - -/*****************************************************************************/ - -/*************************** - * 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 */ - -/*****************************************************************************/ - -#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(KERN_INFO "tea5761: Frequency %d.%03d KHz (divider = 0x%04x)\n", - frq / 1000, frq % 1000, div); -} - -/* Freq should be specifyed at 62.5 Hz */ -static int set_radio_freq(struct dvb_frontend *fe, - struct analog_parameters *params) -{ - struct tea5761_priv *priv = fe->tuner_priv; - unsigned int frq = params->frequency; - unsigned char buffer[7] = {0, 0, 0, 0, 0, 0, 0 }; - unsigned div; - int rc; - - tuner_dbg("radio freq counter %d\n", frq); - - if (params->mode == T_STANDBY) { - tuner_dbg("TEA5761 set to standby mode\n"); - buffer[5] |= TEA5761_TNCTRL_MU; - } else { - buffer[4] |= TEA5761_TNCTRL_PUPD_0; - } - - - if (params->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 (debug) - tea5761_status_dump(buffer); - - if (7 != (rc = tuner_i2c_xfer_send(&priv->i2c_props, buffer, 7))) - tuner_warn("i2c i/o error: rc == %d (should be 5)\n", rc); - - priv->frequency = frq * 125 / 2; - - return 0; -} - -static int tea5761_read_status(struct dvb_frontend *fe, char *buffer) -{ - struct tea5761_priv *priv = fe->tuner_priv; - int rc; - - memset(buffer, 0, 16); - if (16 != (rc = tuner_i2c_xfer_recv(&priv->i2c_props, buffer, 16))) { - tuner_warn("i2c i/o error: rc == %d (should be 16)\n", rc); - return -EREMOTEIO; - } - - return 0; -} - -static inline int tea5761_signal(struct dvb_frontend *fe, const char *buffer) -{ - struct tea5761_priv *priv = fe->tuner_priv; - - int signal = ((buffer[9] & TEA5761_TUNCHECK_LEV_MASK) << (13 - 4)); - - tuner_dbg("Signal strength: %d\n", signal); - - return signal; -} - -static inline int tea5761_stereo(struct dvb_frontend *fe, const char *buffer) -{ - struct tea5761_priv *priv = fe->tuner_priv; - - int stereo = buffer[9] & TEA5761_TUNCHECK_STEREO; - - tuner_dbg("Radio ST GET = %02x\n", stereo); - - return (stereo ? V4L2_TUNER_SUB_STEREO : 0); -} - -static int tea5761_get_status(struct dvb_frontend *fe, u32 *status) -{ - unsigned char buffer[16]; - - *status = 0; - - if (0 == tea5761_read_status(fe, buffer)) { - if (tea5761_signal(fe, buffer)) - *status = TUNER_STATUS_LOCKED; - if (tea5761_stereo(fe, buffer)) - *status |= TUNER_STATUS_STEREO; - } - - return 0; -} - -static int tea5761_get_rf_strength(struct dvb_frontend *fe, u16 *strength) -{ - unsigned char buffer[16]; - - *strength = 0; - - if (0 == tea5761_read_status(fe, buffer)) - *strength = tea5761_signal(fe, buffer); - - return 0; -} - -int tea5761_autodetection(struct i2c_adapter* i2c_adap, u8 i2c_addr) -{ - unsigned char buffer[16]; - int rc; - struct tuner_i2c_props i2c = { .adap = i2c_adap, .addr = i2c_addr }; - - if (16 != (rc = tuner_i2c_xfer_recv(&i2c, buffer, 16))) { - printk(KERN_WARNING "it is not a TEA5761. Received %i chars.\n", rc); - return -EINVAL; - } - - if ((buffer[13] != 0x2b) || (buffer[14] != 0x57) || (buffer[15] != 0x061)) { - printk(KERN_WARNING "Manufacturer ID= 0x%02x, Chip ID = %02x%02x." - " It is not a TEA5761\n", - buffer[13], buffer[14], buffer[15]); - return -EINVAL; - } - printk(KERN_WARNING "tea5761: TEA%02x%02x detected. " - "Manufacturer ID= 0x%02x\n", - buffer[14], buffer[15], buffer[13]); - - return 0; -} - -static int tea5761_release(struct dvb_frontend *fe) -{ - kfree(fe->tuner_priv); - fe->tuner_priv = NULL; - - return 0; -} - -static int tea5761_get_frequency(struct dvb_frontend *fe, u32 *frequency) -{ - struct tea5761_priv *priv = fe->tuner_priv; - *frequency = priv->frequency; - return 0; -} - -static struct dvb_tuner_ops tea5761_tuner_ops = { - .info = { - .name = "tea5761", // Philips TEA5761HN FM Radio - }, - .set_analog_params = set_radio_freq, - .release = tea5761_release, - .get_frequency = tea5761_get_frequency, - .get_status = tea5761_get_status, - .get_rf_strength = tea5761_get_rf_strength, -}; - -struct dvb_frontend *tea5761_attach(struct dvb_frontend *fe, - struct i2c_adapter* i2c_adap, - u8 i2c_addr) -{ - struct tea5761_priv *priv = NULL; - - if (tea5761_autodetection(i2c_adap, i2c_addr) == EINVAL) - return NULL; - - priv = kzalloc(sizeof(struct tea5761_priv), GFP_KERNEL); - if (priv == NULL) - return NULL; - fe->tuner_priv = priv; - - priv->i2c_props.addr = i2c_addr; - priv->i2c_props.adap = i2c_adap; - priv->i2c_props.name = "tea5761"; - - memcpy(&fe->ops.tuner_ops, &tea5761_tuner_ops, - sizeof(struct dvb_tuner_ops)); - - tuner_info("type set to %s\n", "Philips TEA5761HN FM Radio"); - - return fe; -} - - -EXPORT_SYMBOL_GPL(tea5761_attach); -EXPORT_SYMBOL_GPL(tea5761_autodetection); - -MODULE_DESCRIPTION("Philips TEA5761 FM tuner driver"); -MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>"); -MODULE_LICENSE("GPL"); |
