diff options
Diffstat (limited to 'drivers/media/video/tea5767.c')
| -rw-r--r-- | drivers/media/video/tea5767.c | 479 |
1 files changed, 0 insertions, 479 deletions
diff --git a/drivers/media/video/tea5767.c b/drivers/media/video/tea5767.c deleted file mode 100644 index e1b48d87e7b7..000000000000 --- a/drivers/media/video/tea5767.c +++ /dev/null @@ -1,479 +0,0 @@ -/* - * For Philips TEA5767 FM Chip used on some TV Cards like Prolink Pixelview - * I2C address is allways 0xC0. - * - * - * Copyright (c) 2005 Mauro Carvalho Chehab (mchehab@infradead.org) - * This code is placed under the terms of the GNU General Public License - * - * tea5767 autodetection thanks to Torsten Seeboth and Atsushi Nakagawa - * from their contributions on DScaler. - */ - -#include <linux/i2c.h> -#include <linux/delay.h> -#include <linux/videodev.h> -#include "tuner-i2c.h" -#include "tea5767.h" - -static int debug = 0; -module_param(debug, int, 0644); -MODULE_PARM_DESC(debug, "enable verbose debug messages"); - -#define PREFIX "tea5767" - -/*****************************************************************************/ - -struct tea5767_priv { - struct tuner_i2c_props i2c_props; - u32 frequency; - struct tea5767_ctrl ctrl; -}; - -/*****************************************************************************/ - -/****************************** - * Write mode register values * - ******************************/ - -/* First register */ -#define TEA5767_MUTE 0x80 /* Mutes output */ -#define TEA5767_SEARCH 0x40 /* Activates station search */ -/* Bits 0-5 for divider MSB */ - -/* Second register */ -/* Bits 0-7 for divider LSB */ - -/* Third register */ - -/* Station search from botton to up */ -#define TEA5767_SEARCH_UP 0x80 - -/* Searches with ADC output = 10 */ -#define TEA5767_SRCH_HIGH_LVL 0x60 - -/* Searches with ADC output = 10 */ -#define TEA5767_SRCH_MID_LVL 0x40 - -/* Searches with ADC output = 5 */ -#define TEA5767_SRCH_LOW_LVL 0x20 - -/* if on, div=4*(Frf+Fif)/Fref otherwise, div=4*(Frf-Fif)/Freq) */ -#define TEA5767_HIGH_LO_INJECT 0x10 - -/* Disable stereo */ -#define TEA5767_MONO 0x08 - -/* Disable right channel and turns to mono */ -#define TEA5767_MUTE_RIGHT 0x04 - -/* Disable left channel and turns to mono */ -#define TEA5767_MUTE_LEFT 0x02 - -#define TEA5767_PORT1_HIGH 0x01 - -/* Fourth register */ -#define TEA5767_PORT2_HIGH 0x80 -/* Chips stops working. Only I2C bus remains on */ -#define TEA5767_STDBY 0x40 - -/* Japan freq (76-108 MHz. If disabled, 87.5-108 MHz */ -#define TEA5767_JAPAN_BAND 0x20 - -/* Unselected means 32.768 KHz freq as reference. Otherwise Xtal at 13 MHz */ -#define TEA5767_XTAL_32768 0x10 - -/* Cuts weak signals */ -#define TEA5767_SOFT_MUTE 0x08 - -/* Activates high cut control */ -#define TEA5767_HIGH_CUT_CTRL 0x04 - -/* Activates stereo noise control */ -#define TEA5767_ST_NOISE_CTL 0x02 - -/* If activate PORT 1 indicates SEARCH or else it is used as PORT1 */ -#define TEA5767_SRCH_IND 0x01 - -/* Fifth register */ - -/* By activating, it will use Xtal at 13 MHz as reference for divider */ -#define TEA5767_PLLREF_ENABLE 0x80 - -/* By activating, deemphasis=50, or else, deemphasis of 50us */ -#define TEA5767_DEEMPH_75 0X40 - -/***************************** - * Read mode register values * - *****************************/ - -/* First register */ -#define TEA5767_READY_FLAG_MASK 0x80 -#define TEA5767_BAND_LIMIT_MASK 0X40 -/* Bits 0-5 for divider MSB after search or preset */ - -/* Second register */ -/* Bits 0-7 for divider LSB after search or preset */ - -/* Third register */ -#define TEA5767_STEREO_MASK 0x80 -#define TEA5767_IF_CNTR_MASK 0x7f - -/* Fourth register */ -#define TEA5767_ADC_LEVEL_MASK 0xf0 - -/* should be 0 */ -#define TEA5767_CHIP_ID_MASK 0x0f - -/* Fifth register */ -/* Reserved for future extensions */ -#define TEA5767_RESERVED_MASK 0xff - -/*****************************************************************************/ - -static void tea5767_status_dump(struct tea5767_priv *priv, - unsigned char *buffer) -{ - unsigned int div, frq; - - if (TEA5767_READY_FLAG_MASK & buffer[0]) - printk(PREFIX "Ready Flag ON\n"); - else - printk(PREFIX "Ready Flag OFF\n"); - - if (TEA5767_BAND_LIMIT_MASK & buffer[0]) - printk(PREFIX "Tuner at band limit\n"); - else - printk(PREFIX "Tuner not at band limit\n"); - - div = ((buffer[0] & 0x3f) << 8) | buffer[1]; - - switch (priv->ctrl.xtal_freq) { - case TEA5767_HIGH_LO_13MHz: - frq = (div * 50000 - 700000 - 225000) / 4; /* Freq in KHz */ - break; - case TEA5767_LOW_LO_13MHz: - frq = (div * 50000 + 700000 + 225000) / 4; /* Freq in KHz */ - break; - case TEA5767_LOW_LO_32768: - frq = (div * 32768 + 700000 + 225000) / 4; /* Freq in KHz */ - break; - case TEA5767_HIGH_LO_32768: - default: - frq = (div * 32768 - 700000 - 225000) / 4; /* Freq in KHz */ - break; - } - buffer[0] = (div >> 8) & 0x3f; - buffer[1] = div & 0xff; - - printk(PREFIX "Frequency %d.%03d KHz (divider = 0x%04x)\n", - frq / 1000, frq % 1000, div); - - if (TEA5767_STEREO_MASK & buffer[2]) - printk(PREFIX "Stereo\n"); - else - printk(PREFIX "Mono\n"); - - printk(PREFIX "IF Counter = %d\n", buffer[2] & TEA5767_IF_CNTR_MASK); - - printk(PREFIX "ADC Level = %d\n", - (buffer[3] & TEA5767_ADC_LEVEL_MASK) >> 4); - - printk(PREFIX "Chip ID = %d\n", (buffer[3] & TEA5767_CHIP_ID_MASK)); - - printk(PREFIX "Reserved = 0x%02x\n", - (buffer[4] & TEA5767_RESERVED_MASK)); -} - -/* Freq should be specifyed at 62.5 Hz */ -static int set_radio_freq(struct dvb_frontend *fe, - struct analog_parameters *params) -{ - struct tea5767_priv *priv = fe->tuner_priv; - unsigned int frq = params->frequency; - unsigned char buffer[5]; - unsigned div; - int rc; - - tuner_dbg("radio freq = %d.%03d MHz\n", frq/16000,(frq/16)%1000); - - buffer[2] = 0; - - if (priv->ctrl.port1) - buffer[2] |= TEA5767_PORT1_HIGH; - - if (params->audmode == V4L2_TUNER_MODE_MONO) { - tuner_dbg("TEA5767 set to mono\n"); - buffer[2] |= TEA5767_MONO; - } else { - tuner_dbg("TEA5767 set to stereo\n"); - } - - - buffer[3] = 0; - - if (priv->ctrl.port2) - buffer[3] |= TEA5767_PORT2_HIGH; - - if (priv->ctrl.high_cut) - buffer[3] |= TEA5767_HIGH_CUT_CTRL; - - if (priv->ctrl.st_noise) - buffer[3] |= TEA5767_ST_NOISE_CTL; - - if (priv->ctrl.soft_mute) - buffer[3] |= TEA5767_SOFT_MUTE; - - if (priv->ctrl.japan_band) - buffer[3] |= TEA5767_JAPAN_BAND; - - buffer[4] = 0; - - if (priv->ctrl.deemph_75) - buffer[4] |= TEA5767_DEEMPH_75; - - if (priv->ctrl.pllref) - buffer[4] |= TEA5767_PLLREF_ENABLE; - - - /* Rounds freq to next decimal value - for 62.5 KHz step */ - /* frq = 20*(frq/16)+radio_frq[frq%16]; */ - - switch (priv->ctrl.xtal_freq) { - case TEA5767_HIGH_LO_13MHz: - tuner_dbg("radio HIGH LO inject xtal @ 13 MHz\n"); - buffer[2] |= TEA5767_HIGH_LO_INJECT; - div = (frq * (4000 / 16) + 700000 + 225000 + 25000) / 50000; - break; - case TEA5767_LOW_LO_13MHz: - tuner_dbg("radio LOW LO inject xtal @ 13 MHz\n"); - - div = (frq * (4000 / 16) - 700000 - 225000 + 25000) / 50000; - break; - case TEA5767_LOW_LO_32768: - tuner_dbg("radio LOW LO inject xtal @ 32,768 MHz\n"); - buffer[3] |= TEA5767_XTAL_32768; - /* const 700=4000*175 Khz - to adjust freq to right value */ - div = ((frq * (4000 / 16) - 700000 - 225000) + 16384) >> 15; - break; - case TEA5767_HIGH_LO_32768: - default: - tuner_dbg("radio HIGH LO inject xtal @ 32,768 MHz\n"); - - buffer[2] |= TEA5767_HIGH_LO_INJECT; - buffer[3] |= TEA5767_XTAL_32768; - div = ((frq * (4000 / 16) + 700000 + 225000) + 16384) >> 15; - break; - } - buffer[0] = (div >> 8) & 0x3f; - buffer[1] = div & 0xff; - - if (5 != (rc = tuner_i2c_xfer_send(&priv->i2c_props, buffer, 5))) - tuner_warn("i2c i/o error: rc == %d (should be 5)\n", rc); - - if (debug) { - if (5 != (rc = tuner_i2c_xfer_recv(&priv->i2c_props, buffer, 5))) - tuner_warn("i2c i/o error: rc == %d (should be 5)\n", rc); - else - tea5767_status_dump(priv, buffer); - } - - priv->frequency = frq * 125 / 2; - - return 0; -} - -static int tea5767_read_status(struct dvb_frontend *fe, char *buffer) -{ - struct tea5767_priv *priv = fe->tuner_priv; - int rc; - - memset(buffer, 0, 5); - if (5 != (rc = tuner_i2c_xfer_recv(&priv->i2c_props, buffer, 5))) { - tuner_warn("i2c i/o error: rc == %d (should be 5)\n", rc); - return -EREMOTEIO; - } - - return 0; -} - -static inline int tea5767_signal(struct dvb_frontend *fe, const char *buffer) -{ - struct tea5767_priv *priv = fe->tuner_priv; - - int signal = ((buffer[3] & TEA5767_ADC_LEVEL_MASK) << 8); - - tuner_dbg("Signal strength: %d\n", signal); - - return signal; -} - -static inline int tea5767_stereo(struct dvb_frontend *fe, const char *buffer) -{ - struct tea5767_priv *priv = fe->tuner_priv; - - int stereo = buffer[2] & TEA5767_STEREO_MASK; - - tuner_dbg("Radio ST GET = %02x\n", stereo); - - return (stereo ? V4L2_TUNER_SUB_STEREO : 0); -} - -static int tea5767_get_status(struct dvb_frontend *fe, u32 *status) -{ - unsigned char buffer[5]; - - *status = 0; - - if (0 == tea5767_read_status(fe, buffer)) { - if (tea5767_signal(fe, buffer)) - *status = TUNER_STATUS_LOCKED; - if (tea5767_stereo(fe, buffer)) - *status |= TUNER_STATUS_STEREO; - } - - return 0; -} - -static int tea5767_get_rf_strength(struct dvb_frontend *fe, u16 *strength) -{ - unsigned char buffer[5]; - - *strength = 0; - - if (0 == tea5767_read_status(fe, buffer)) - *strength = tea5767_signal(fe, buffer); - - return 0; -} - -static int tea5767_standby(struct dvb_frontend *fe) -{ - unsigned char buffer[5]; - struct tea5767_priv *priv = fe->tuner_priv; - unsigned div, rc; - - div = (87500 * 4 + 700 + 225 + 25) / 50; /* Set frequency to 87.5 MHz */ - buffer[0] = (div >> 8) & 0x3f; - buffer[1] = div & 0xff; - buffer[2] = TEA5767_PORT1_HIGH; - buffer[3] = TEA5767_PORT2_HIGH | TEA5767_HIGH_CUT_CTRL | - TEA5767_ST_NOISE_CTL | TEA5767_JAPAN_BAND | TEA5767_STDBY; - buffer[4] = 0; - - if (5 != (rc = tuner_i2c_xfer_send(&priv->i2c_props, buffer, 5))) - tuner_warn("i2c i/o error: rc == %d (should be 5)\n", rc); - - return 0; -} - -int tea5767_autodetection(struct i2c_adapter* i2c_adap, u8 i2c_addr) -{ - struct tuner_i2c_props i2c = { .adap = i2c_adap, .addr = i2c_addr }; - unsigned char buffer[7] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; - int rc; - - if ((rc = tuner_i2c_xfer_recv(&i2c, buffer, 7))< 5) { - printk(KERN_WARNING "It is not a TEA5767. Received %i bytes.\n", rc); - return EINVAL; - } - - /* If all bytes are the same then it's a TV tuner and not a tea5767 */ - if (buffer[0] == buffer[1] && buffer[0] == buffer[2] && - buffer[0] == buffer[3] && buffer[0] == buffer[4]) { - printk(KERN_WARNING "All bytes are equal. It is not a TEA5767\n"); - return EINVAL; - } - - /* Status bytes: - * Byte 4: bit 3:1 : CI (Chip Identification) == 0 - * bit 0 : internally set to 0 - * Byte 5: bit 7:0 : == 0 - */ - if (((buffer[3] & 0x0f) != 0x00) || (buffer[4] != 0x00)) { - printk(KERN_WARNING "Chip ID is not zero. It is not a TEA5767\n"); - return EINVAL; - } - - /* It seems that tea5767 returns 0xff after the 5th byte */ - if ((buffer[5] != 0xff) || (buffer[6] != 0xff)) { - printk(KERN_WARNING "Returned more than 5 bytes. It is not a TEA5767\n"); - return EINVAL; - } - - return 0; -} - -static int tea5767_release(struct dvb_frontend *fe) -{ - kfree(fe->tuner_priv); - fe->tuner_priv = NULL; - - return 0; -} - -static int tea5767_get_frequency(struct dvb_frontend *fe, u32 *frequency) -{ - struct tea5767_priv *priv = fe->tuner_priv; - *frequency = priv->frequency; - - return 0; -} - -static int tea5767_set_config (struct dvb_frontend *fe, void *priv_cfg) -{ - struct tea5767_priv *priv = fe->tuner_priv; - - memcpy(&priv->ctrl, priv_cfg, sizeof(priv->ctrl)); - - return 0; -} - -static struct dvb_tuner_ops tea5767_tuner_ops = { - .info = { - .name = "tea5767", // Philips TEA5767HN FM Radio - }, - - .set_analog_params = set_radio_freq, - .set_config = tea5767_set_config, - .sleep = tea5767_standby, - .release = tea5767_release, - .get_frequency = tea5767_get_frequency, - .get_status = tea5767_get_status, - .get_rf_strength = tea5767_get_rf_strength, -}; - -struct dvb_frontend *tea5767_attach(struct dvb_frontend *fe, - struct i2c_adapter* i2c_adap, - u8 i2c_addr) -{ - struct tea5767_priv *priv = NULL; - - priv = kzalloc(sizeof(struct tea5767_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->ctrl.xtal_freq = TEA5767_HIGH_LO_32768; - priv->ctrl.port1 = 1; - priv->ctrl.port2 = 1; - priv->ctrl.high_cut = 1; - priv->ctrl.st_noise = 1; - priv->ctrl.japan_band = 1; - - memcpy(&fe->ops.tuner_ops, &tea5767_tuner_ops, - sizeof(struct dvb_tuner_ops)); - - tuner_info("type set to %s\n", "Philips TEA5767HN FM Radio"); - - return fe; -} - -EXPORT_SYMBOL_GPL(tea5767_attach); -EXPORT_SYMBOL_GPL(tea5767_autodetection); - -MODULE_DESCRIPTION("Philips TEA5767 FM tuner driver"); -MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>"); -MODULE_LICENSE("GPL"); |