diff options
Diffstat (limited to 'drivers/media/tuners/xc5000.c')
| -rw-r--r-- | drivers/media/tuners/xc5000.c | 1500 |
1 files changed, 1500 insertions, 0 deletions
diff --git a/drivers/media/tuners/xc5000.c b/drivers/media/tuners/xc5000.c new file mode 100644 index 000000000..4f3602a54 --- /dev/null +++ b/drivers/media/tuners/xc5000.c @@ -0,0 +1,1500 @@ +/* + * Driver for Xceive XC5000 "QAM/8VSB single chip tuner" + * + * Copyright (c) 2007 Xceive Corporation + * Copyright (c) 2007 Steven Toth <stoth@linuxtv.org> + * Copyright (c) 2009 Devin Heitmueller <dheitmueller@kernellabs.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/videodev2.h> +#include <linux/delay.h> +#include <linux/workqueue.h> +#include <linux/dvb/frontend.h> +#include <linux/i2c.h> + +#include "dvb_frontend.h" + +#include "xc5000.h" +#include "tuner-i2c.h" + +static int debug; +module_param(debug, int, 0644); +MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off)."); + +static int no_poweroff; +module_param(no_poweroff, int, 0644); +MODULE_PARM_DESC(no_poweroff, "0 (default) powers device off when not used.\n" + "\t\t1 keep device energized and with tuner ready all the times.\n" + "\t\tFaster, but consumes more power and keeps the device hotter"); + +static DEFINE_MUTEX(xc5000_list_mutex); +static LIST_HEAD(hybrid_tuner_instance_list); + +#define dprintk(level, fmt, arg...) if (debug >= level) \ + printk(KERN_INFO "%s: " fmt, "xc5000", ## arg) + +struct xc5000_priv { + struct tuner_i2c_props i2c_props; + struct list_head hybrid_tuner_instance_list; + + u32 if_khz; + u16 xtal_khz; + u32 freq_hz, freq_offset; + u32 bandwidth; + u8 video_standard; + unsigned int mode; + u8 rf_mode; + u8 radio_input; + u16 output_amp; + + int chip_id; + u16 pll_register_no; + u8 init_status_supported; + u8 fw_checksum_supported; + + struct dvb_frontend *fe; + struct delayed_work timer_sleep; + + const struct firmware *firmware; +}; + +/* Misc Defines */ +#define MAX_TV_STANDARD 24 +#define XC_MAX_I2C_WRITE_LENGTH 64 + +/* Time to suspend after the .sleep callback is called */ +#define XC5000_SLEEP_TIME 5000 /* ms */ + +/* Signal Types */ +#define XC_RF_MODE_AIR 0 +#define XC_RF_MODE_CABLE 1 + +/* Product id */ +#define XC_PRODUCT_ID_FW_NOT_LOADED 0x2000 +#define XC_PRODUCT_ID_FW_LOADED 0x1388 + +/* Registers */ +#define XREG_INIT 0x00 +#define XREG_VIDEO_MODE 0x01 +#define XREG_AUDIO_MODE 0x02 +#define XREG_RF_FREQ 0x03 +#define XREG_D_CODE 0x04 +#define XREG_IF_OUT 0x05 +#define XREG_SEEK_MODE 0x07 +#define XREG_POWER_DOWN 0x0A /* Obsolete */ +/* Set the output amplitude - SIF for analog, DTVP/DTVN for digital */ +#define XREG_OUTPUT_AMP 0x0B +#define XREG_SIGNALSOURCE 0x0D /* 0=Air, 1=Cable */ +#define XREG_SMOOTHEDCVBS 0x0E +#define XREG_XTALFREQ 0x0F +#define XREG_FINERFREQ 0x10 +#define XREG_DDIMODE 0x11 + +#define XREG_ADC_ENV 0x00 +#define XREG_QUALITY 0x01 +#define XREG_FRAME_LINES 0x02 +#define XREG_HSYNC_FREQ 0x03 +#define XREG_LOCK 0x04 +#define XREG_FREQ_ERROR 0x05 +#define XREG_SNR 0x06 +#define XREG_VERSION 0x07 +#define XREG_PRODUCT_ID 0x08 +#define XREG_BUSY 0x09 +#define XREG_BUILD 0x0D +#define XREG_TOTALGAIN 0x0F +#define XREG_FW_CHECKSUM 0x12 +#define XREG_INIT_STATUS 0x13 + +/* + Basic firmware description. This will remain with + the driver for documentation purposes. + + This represents an I2C firmware file encoded as a + string of unsigned char. Format is as follows: + + char[0 ]=len0_MSB -> len = len_MSB * 256 + len_LSB + char[1 ]=len0_LSB -> length of first write transaction + char[2 ]=data0 -> first byte to be sent + char[3 ]=data1 + char[4 ]=data2 + char[ ]=... + char[M ]=dataN -> last byte to be sent + char[M+1]=len1_MSB -> len = len_MSB * 256 + len_LSB + char[M+2]=len1_LSB -> length of second write transaction + char[M+3]=data0 + char[M+4]=data1 + ... + etc. + + The [len] value should be interpreted as follows: + + len= len_MSB _ len_LSB + len=1111_1111_1111_1111 : End of I2C_SEQUENCE + len=0000_0000_0000_0000 : Reset command: Do hardware reset + len=0NNN_NNNN_NNNN_NNNN : Normal transaction: number of bytes = {1:32767) + len=1WWW_WWWW_WWWW_WWWW : Wait command: wait for {1:32767} ms + + For the RESET and WAIT commands, the two following bytes will contain + immediately the length of the following transaction. + +*/ +struct XC_TV_STANDARD { + char *name; + u16 audio_mode; + u16 video_mode; +}; + +/* Tuner standards */ +#define MN_NTSC_PAL_BTSC 0 +#define MN_NTSC_PAL_A2 1 +#define MN_NTSC_PAL_EIAJ 2 +#define MN_NTSC_PAL_MONO 3 +#define BG_PAL_A2 4 +#define BG_PAL_NICAM 5 +#define BG_PAL_MONO 6 +#define I_PAL_NICAM 7 +#define I_PAL_NICAM_MONO 8 +#define DK_PAL_A2 9 +#define DK_PAL_NICAM 10 +#define DK_PAL_MONO 11 +#define DK_SECAM_A2DK1 12 +#define DK_SECAM_A2LDK3 13 +#define DK_SECAM_A2MONO 14 +#define L_SECAM_NICAM 15 +#define LC_SECAM_NICAM 16 +#define DTV6 17 +#define DTV8 18 +#define DTV7_8 19 +#define DTV7 20 +#define FM_RADIO_INPUT2 21 +#define FM_RADIO_INPUT1 22 +#define FM_RADIO_INPUT1_MONO 23 + +static struct XC_TV_STANDARD xc5000_standard[MAX_TV_STANDARD] = { + {"M/N-NTSC/PAL-BTSC", 0x0400, 0x8020}, + {"M/N-NTSC/PAL-A2", 0x0600, 0x8020}, + {"M/N-NTSC/PAL-EIAJ", 0x0440, 0x8020}, + {"M/N-NTSC/PAL-Mono", 0x0478, 0x8020}, + {"B/G-PAL-A2", 0x0A00, 0x8049}, + {"B/G-PAL-NICAM", 0x0C04, 0x8049}, + {"B/G-PAL-MONO", 0x0878, 0x8059}, + {"I-PAL-NICAM", 0x1080, 0x8009}, + {"I-PAL-NICAM-MONO", 0x0E78, 0x8009}, + {"D/K-PAL-A2", 0x1600, 0x8009}, + {"D/K-PAL-NICAM", 0x0E80, 0x8009}, + {"D/K-PAL-MONO", 0x1478, 0x8009}, + {"D/K-SECAM-A2 DK1", 0x1200, 0x8009}, + {"D/K-SECAM-A2 L/DK3", 0x0E00, 0x8009}, + {"D/K-SECAM-A2 MONO", 0x1478, 0x8009}, + {"L-SECAM-NICAM", 0x8E82, 0x0009}, + {"L'-SECAM-NICAM", 0x8E82, 0x4009}, + {"DTV6", 0x00C0, 0x8002}, + {"DTV8", 0x00C0, 0x800B}, + {"DTV7/8", 0x00C0, 0x801B}, + {"DTV7", 0x00C0, 0x8007}, + {"FM Radio-INPUT2", 0x9802, 0x9002}, + {"FM Radio-INPUT1", 0x0208, 0x9002}, + {"FM Radio-INPUT1_MONO", 0x0278, 0x9002} +}; + + +struct xc5000_fw_cfg { + char *name; + u16 size; + u16 pll_reg; + u8 init_status_supported; + u8 fw_checksum_supported; +}; + +#define XC5000A_FIRMWARE "/*(DEBLOBBED)*/" +static const struct xc5000_fw_cfg xc5000a_1_6_114 = { + .name = XC5000A_FIRMWARE, + .size = 12401, + .pll_reg = 0x806c, +}; + +#define XC5000C_FIRMWARE "/*(DEBLOBBED)*/" +static const struct xc5000_fw_cfg xc5000c_41_024_5 = { + .name = XC5000C_FIRMWARE, + .size = 16497, + .pll_reg = 0x13, + .init_status_supported = 1, + .fw_checksum_supported = 1, +}; + +static inline const struct xc5000_fw_cfg *xc5000_assign_firmware(int chip_id) +{ + switch (chip_id) { + default: + case XC5000A: + return &xc5000a_1_6_114; + case XC5000C: + return &xc5000c_41_024_5; + } +} + +static int xc_load_fw_and_init_tuner(struct dvb_frontend *fe, int force); +static int xc5000_is_firmware_loaded(struct dvb_frontend *fe); +static int xc5000_readreg(struct xc5000_priv *priv, u16 reg, u16 *val); +static int xc5000_tuner_reset(struct dvb_frontend *fe); + +static int xc_send_i2c_data(struct xc5000_priv *priv, u8 *buf, int len) +{ + struct i2c_msg msg = { .addr = priv->i2c_props.addr, + .flags = 0, .buf = buf, .len = len }; + + if (i2c_transfer(priv->i2c_props.adap, &msg, 1) != 1) { + printk(KERN_ERR "xc5000: I2C write failed (len=%i)\n", len); + return -EREMOTEIO; + } + return 0; +} + +#if 0 +/* This routine is never used because the only time we read data from the + i2c bus is when we read registers, and we want that to be an atomic i2c + transaction in case we are on a multi-master bus */ +static int xc_read_i2c_data(struct xc5000_priv *priv, u8 *buf, int len) +{ + struct i2c_msg msg = { .addr = priv->i2c_props.addr, + .flags = I2C_M_RD, .buf = buf, .len = len }; + + if (i2c_transfer(priv->i2c_props.adap, &msg, 1) != 1) { + printk(KERN_ERR "xc5000 I2C read failed (len=%i)\n", len); + return -EREMOTEIO; + } + return 0; +} +#endif + +static int xc5000_readreg(struct xc5000_priv *priv, u16 reg, u16 *val) +{ + u8 buf[2] = { reg >> 8, reg & 0xff }; + u8 bval[2] = { 0, 0 }; + struct i2c_msg msg[2] = { + { .addr = priv->i2c_props.addr, + .flags = 0, .buf = &buf[0], .len = 2 }, + { .addr = priv->i2c_props.addr, + .flags = I2C_M_RD, .buf = &bval[0], .len = 2 }, + }; + + if (i2c_transfer(priv->i2c_props.adap, msg, 2) != 2) { + printk(KERN_WARNING "xc5000: I2C read failed\n"); + return -EREMOTEIO; + } + + *val = (bval[0] << 8) | bval[1]; + return 0; +} + +static int xc5000_tuner_reset(struct dvb_frontend *fe) +{ + struct xc5000_priv *priv = fe->tuner_priv; + int ret; + + dprintk(1, "%s()\n", __func__); + + if (fe->callback) { + ret = fe->callback(((fe->dvb) && (fe->dvb->priv)) ? + fe->dvb->priv : + priv->i2c_props.adap->algo_data, + DVB_FRONTEND_COMPONENT_TUNER, + XC5000_TUNER_RESET, 0); + if (ret) { + printk(KERN_ERR "xc5000: reset failed\n"); + return ret; + } + } else { + printk(KERN_ERR "xc5000: no tuner reset callback function, fatal\n"); + return -EINVAL; + } + return 0; +} + +static int xc_write_reg(struct xc5000_priv *priv, u16 reg_addr, u16 i2c_data) +{ + u8 buf[4]; + int watch_dog_timer = 100; + int result; + + buf[0] = (reg_addr >> 8) & 0xFF; + buf[1] = reg_addr & 0xFF; + buf[2] = (i2c_data >> 8) & 0xFF; + buf[3] = i2c_data & 0xFF; + result = xc_send_i2c_data(priv, buf, 4); + if (result == 0) { + /* wait for busy flag to clear */ + while ((watch_dog_timer > 0) && (result == 0)) { + result = xc5000_readreg(priv, XREG_BUSY, (u16 *)buf); + if (result == 0) { + if ((buf[0] == 0) && (buf[1] == 0)) { + /* busy flag cleared */ + break; + } else { + msleep(5); /* wait 5 ms */ + watch_dog_timer--; + } + } + } + } + if (watch_dog_timer <= 0) + result = -EREMOTEIO; + + return result; +} + +static int xc_load_i2c_sequence(struct dvb_frontend *fe, const u8 *i2c_sequence) +{ + struct xc5000_priv *priv = fe->tuner_priv; + + int i, nbytes_to_send, result; + unsigned int len, pos, index; + u8 buf[XC_MAX_I2C_WRITE_LENGTH]; + + index = 0; + while ((i2c_sequence[index] != 0xFF) || + (i2c_sequence[index + 1] != 0xFF)) { + len = i2c_sequence[index] * 256 + i2c_sequence[index+1]; + if (len == 0x0000) { + /* RESET command */ + result = xc5000_tuner_reset(fe); + index += 2; + if (result != 0) + return result; + } else if (len & 0x8000) { + /* WAIT command */ + msleep(len & 0x7FFF); + index += 2; + } else { + /* Send i2c data whilst ensuring individual transactions + * do not exceed XC_MAX_I2C_WRITE_LENGTH bytes. + */ + index += 2; + buf[0] = i2c_sequence[index]; + buf[1] = i2c_sequence[index + 1]; + pos = 2; + while (pos < len) { + if ((len - pos) > XC_MAX_I2C_WRITE_LENGTH - 2) + nbytes_to_send = + XC_MAX_I2C_WRITE_LENGTH; + else + nbytes_to_send = (len - pos + 2); + for (i = 2; i < nbytes_to_send; i++) { + buf[i] = i2c_sequence[index + pos + + i - 2]; + } + result = xc_send_i2c_data(priv, buf, + nbytes_to_send); + + if (result != 0) + return result; + + pos += nbytes_to_send - 2; + } + index += len; + } + } + return 0; +} + +static int xc_initialize(struct xc5000_priv *priv) +{ + dprintk(1, "%s()\n", __func__); + return xc_write_reg(priv, XREG_INIT, 0); +} + +static int xc_set_tv_standard(struct xc5000_priv *priv, + u16 video_mode, u16 audio_mode, u8 radio_mode) +{ + int ret; + dprintk(1, "%s(0x%04x,0x%04x)\n", __func__, video_mode, audio_mode); + if (radio_mode) { + dprintk(1, "%s() Standard = %s\n", + __func__, + xc5000_standard[radio_mode].name); + } else { + dprintk(1, "%s() Standard = %s\n", + __func__, + xc5000_standard[priv->video_standard].name); + } + + ret = xc_write_reg(priv, XREG_VIDEO_MODE, video_mode); + if (ret == 0) + ret = xc_write_reg(priv, XREG_AUDIO_MODE, audio_mode); + + return ret; +} + +static int xc_set_signal_source(struct xc5000_priv *priv, u16 rf_mode) +{ + dprintk(1, "%s(%d) Source = %s\n", __func__, rf_mode, + rf_mode == XC_RF_MODE_AIR ? "ANTENNA" : "CABLE"); + + if ((rf_mode != XC_RF_MODE_AIR) && (rf_mode != XC_RF_MODE_CABLE)) { + rf_mode = XC_RF_MODE_CABLE; + printk(KERN_ERR + "%s(), Invalid mode, defaulting to CABLE", + __func__); + } + return xc_write_reg(priv, XREG_SIGNALSOURCE, rf_mode); +} + +static const struct dvb_tuner_ops xc5000_tuner_ops; + +static int xc_set_rf_frequency(struct xc5000_priv *priv, u32 freq_hz) +{ + u16 freq_code; + + dprintk(1, "%s(%u)\n", __func__, freq_hz); + + if ((freq_hz > xc5000_tuner_ops.info.frequency_max) || + (freq_hz < xc5000_tuner_ops.info.frequency_min)) + return -EINVAL; + + freq_code = (u16)(freq_hz / 15625); + + /* Starting in firmware version 1.1.44, Xceive recommends using the + FINERFREQ for all normal tuning (the doc indicates reg 0x03 should + only be used for fast scanning for channel lock) */ + return xc_write_reg(priv, XREG_FINERFREQ, freq_code); +} + + +static int xc_set_IF_frequency(struct xc5000_priv *priv, u32 freq_khz) +{ + u32 freq_code = (freq_khz * 1024)/1000; + dprintk(1, "%s(freq_khz = %d) freq_code = 0x%x\n", + __func__, freq_khz, freq_code); + + return xc_write_reg(priv, XREG_IF_OUT, freq_code); +} + + +static int xc_get_adc_envelope(struct xc5000_priv *priv, u16 *adc_envelope) +{ + return xc5000_readreg(priv, XREG_ADC_ENV, adc_envelope); +} + +static int xc_get_frequency_error(struct xc5000_priv *priv, u32 *freq_error_hz) +{ + int result; + u16 reg_data; + u32 tmp; + + result = xc5000_readreg(priv, XREG_FREQ_ERROR, ®_data); + if (result != 0) + return result; + + tmp = (u32)reg_data; + (*freq_error_hz) = (tmp * 15625) / 1000; + return result; +} + +static int xc_get_lock_status(struct xc5000_priv *priv, u16 *lock_status) +{ + return xc5000_readreg(priv, XREG_LOCK, lock_status); +} + +static int xc_get_version(struct xc5000_priv *priv, + u8 *hw_majorversion, u8 *hw_minorversion, + u8 *fw_majorversion, u8 *fw_minorversion) +{ + u16 data; + int result; + + result = xc5000_readreg(priv, XREG_VERSION, &data); + if (result != 0) + return result; + + (*hw_majorversion) = (data >> 12) & 0x0F; + (*hw_minorversion) = (data >> 8) & 0x0F; + (*fw_majorversion) = (data >> 4) & 0x0F; + (*fw_minorversion) = data & 0x0F; + + return 0; +} + +static int xc_get_buildversion(struct xc5000_priv *priv, u16 *buildrev) +{ + return xc5000_readreg(priv, XREG_BUILD, buildrev); +} + +static int xc_get_hsync_freq(struct xc5000_priv *priv, u32 *hsync_freq_hz) +{ + u16 reg_data; + int result; + + result = xc5000_readreg(priv, XREG_HSYNC_FREQ, ®_data); + if (result != 0) + return result; + + (*hsync_freq_hz) = ((reg_data & 0x0fff) * 763)/100; + return result; +} + +static int xc_get_frame_lines(struct xc5000_priv *priv, u16 *frame_lines) +{ + return xc5000_readreg(priv, XREG_FRAME_LINES, frame_lines); +} + +static int xc_get_quality(struct xc5000_priv *priv, u16 *quality) +{ + return xc5000_readreg(priv, XREG_QUALITY, quality); +} + +static int xc_get_analogsnr(struct xc5000_priv *priv, u16 *snr) +{ + return xc5000_readreg(priv, XREG_SNR, snr); +} + +static int xc_get_totalgain(struct xc5000_priv *priv, u16 *totalgain) +{ + return xc5000_readreg(priv, XREG_TOTALGAIN, totalgain); +} + +static u16 wait_for_lock(struct xc5000_priv *priv) +{ + u16 lock_state = 0; + int watch_dog_count = 40; + + while ((lock_state == 0) && (watch_dog_count > 0)) { + xc_get_lock_status(priv, &lock_state); + if (lock_state != 1) { + msleep(5); + watch_dog_count--; + } + } + return lock_state; +} + +#define XC_TUNE_ANALOG 0 +#define XC_TUNE_DIGITAL 1 +static int xc_tune_channel(struct xc5000_priv *priv, u32 freq_hz, int mode) +{ + int found = 0; + + dprintk(1, "%s(%u)\n", __func__, freq_hz); + + if (xc_set_rf_frequency(priv, freq_hz) != 0) + return 0; + + if (mode == XC_TUNE_ANALOG) { + if (wait_for_lock(priv) == 1) + found = 1; + } + + return found; +} + +static int xc_set_xtal(struct dvb_frontend *fe) +{ + struct xc5000_priv *priv = fe->tuner_priv; + int ret = 0; + + switch (priv->chip_id) { + default: + case XC5000A: + /* 32.000 MHz xtal is default */ + break; + case XC5000C: + switch (priv->xtal_khz) { + default: + case 32000: + /* 32.000 MHz xtal is default */ + break; + case 31875: + /* 31.875 MHz xtal configuration */ + ret = xc_write_reg(priv, 0x000f, 0x8081); + break; + } + break; + } + return ret; +} + +static int xc5000_fwupload(struct dvb_frontend *fe, + const struct xc5000_fw_cfg *desired_fw, + const struct firmware *fw) +{ + struct xc5000_priv *priv = fe->tuner_priv; + int ret; + + /* request the firmware, this will block and timeout */ + dprintk(1, "waiting for firmware upload (%s)...\n", + desired_fw->name); + + priv->pll_register_no = desired_fw->pll_reg; + priv->init_status_supported = desired_fw->init_status_supported; + priv->fw_checksum_supported = desired_fw->fw_checksum_supported; + + + dprintk(1, "firmware uploading...\n"); + ret = xc_load_i2c_sequence(fe, fw->data); + if (!ret) { + ret = xc_set_xtal(fe); + dprintk(1, "Firmware upload complete...\n"); + } else + printk(KERN_ERR "xc5000: firmware upload failed...\n"); + + return ret; +} + +static void xc_debug_dump(struct xc5000_priv *priv) +{ + u16 adc_envelope; + u32 freq_error_hz = 0; + u16 lock_status; + u32 hsync_freq_hz = 0; + u16 frame_lines; + u16 quality; + u16 snr; + u16 totalgain; + u8 hw_majorversion = 0, hw_minorversion = 0; + u8 fw_majorversion = 0, fw_minorversion = 0; + u16 fw_buildversion = 0; + u16 regval; + + /* Wait for stats to stabilize. + * Frame Lines needs two frame times after initial lock + * before it is valid. + */ + msleep(100); + + xc_get_adc_envelope(priv, &adc_envelope); + dprintk(1, "*** ADC envelope (0-1023) = %d\n", adc_envelope); + + xc_get_frequency_error(priv, &freq_error_hz); + dprintk(1, "*** Frequency error = %d Hz\n", freq_error_hz); + + xc_get_lock_status(priv, &lock_status); + dprintk(1, "*** Lock status (0-Wait, 1-Locked, 2-No-signal) = %d\n", + lock_status); + + xc_get_version(priv, &hw_majorversion, &hw_minorversion, + &fw_majorversion, &fw_minorversion); + xc_get_buildversion(priv, &fw_buildversion); + dprintk(1, "*** HW: V%d.%d, FW: V %d.%d.%d\n", + hw_majorversion, hw_minorversion, + fw_majorversion, fw_minorversion, fw_buildversion); + + xc_get_hsync_freq(priv, &hsync_freq_hz); + dprintk(1, "*** Horizontal sync frequency = %d Hz\n", hsync_freq_hz); + + xc_get_frame_lines(priv, &frame_lines); + dprintk(1, "*** Frame lines = %d\n", frame_lines); + + xc_get_quality(priv, &quality); + dprintk(1, "*** Quality (0:<8dB, 7:>56dB) = %d\n", quality & 0x07); + + xc_get_analogsnr(priv, &snr); + dprintk(1, "*** Unweighted analog SNR = %d dB\n", snr & 0x3f); + + xc_get_totalgain(priv, &totalgain); + dprintk(1, "*** Total gain = %d.%d dB\n", totalgain / 256, + (totalgain % 256) * 100 / 256); + + if (priv->pll_register_no) { + xc5000_readreg(priv, priv->pll_register_no, ®val); + dprintk(1, "*** PLL lock status = 0x%04x\n", regval); + } +} + +static int xc5000_tune_digital(struct dvb_frontend *fe) +{ + struct xc5000_priv *priv = fe->tuner_priv; + int ret; + u32 bw = fe->dtv_property_cache.bandwidth_hz; + + ret = xc_set_signal_source(priv, priv->rf_mode); + if (ret != 0) { + printk(KERN_ERR + "xc5000: xc_set_signal_source(%d) failed\n", + priv->rf_mode); + return -EREMOTEIO; + } + + ret = xc_set_tv_standard(priv, + xc5000_standard[priv->video_standard].video_mode, + xc5000_standard[priv->video_standard].audio_mode, 0); + if (ret != 0) { + printk(KERN_ERR "xc5000: xc_set_tv_standard failed\n"); + return -EREMOTEIO; + } + + ret = xc_set_IF_frequency(priv, priv->if_khz); + if (ret != 0) { + printk(KERN_ERR "xc5000: xc_Set_IF_frequency(%d) failed\n", + priv->if_khz); + return -EIO; + } + + dprintk(1, "%s() setting OUTPUT_AMP to 0x%x\n", + __func__, priv->output_amp); + xc_write_reg(priv, XREG_OUTPUT_AMP, priv->output_amp); + + xc_tune_channel(priv, priv->freq_hz, XC_TUNE_DIGITAL); + + if (debug) + xc_debug_dump(priv); + + priv->bandwidth = bw; + + return 0; +} + +static int xc5000_set_digital_params(struct dvb_frontend *fe) +{ + int b; + struct xc5000_priv *priv = fe->tuner_priv; + u32 bw = fe->dtv_property_cache.bandwidth_hz; + u32 freq = fe->dtv_property_cache.frequency; + u32 delsys = fe->dtv_property_cache.delivery_system; + + if (xc_load_fw_and_init_tuner(fe, 0) != 0) { + dprintk(1, "Unable to load firmware and init tuner\n"); + return -EINVAL; + } + + dprintk(1, "%s() frequency=%d (Hz)\n", __func__, freq); + + switch (delsys) { + case SYS_ATSC: + dprintk(1, "%s() VSB modulation\n", __func__); + priv->rf_mode = XC_RF_MODE_AIR; + priv->freq_offset = 1750000; + priv->video_standard = DTV6; + break; + case SYS_DVBC_ANNEX_B: + dprintk(1, "%s() QAM modulation\n", __func__); + priv->rf_mode = XC_RF_MODE_CABLE; + priv->freq_offset = 1750000; + priv->video_standard = DTV6; + break; + case SYS_ISDBT: + /* All ISDB-T are currently for 6 MHz bw */ + if (!bw) + bw = 6000000; + /* fall to OFDM handling */ + case SYS_DMBTH: + case SYS_DVBT: + case SYS_DVBT2: + dprintk(1, "%s() OFDM\n", __func__); + switch (bw) { + case 6000000: + priv->video_standard = DTV6; + priv->freq_offset = 1750000; + break; + case 7000000: + priv->video_standard = DTV7; + priv->freq_offset = 2250000; + break; + case 8000000: + priv->video_standard = DTV8; + priv->freq_offset = 2750000; + break; + default: + printk(KERN_ERR "xc5000 bandwidth not set!\n"); + return -EINVAL; + } + priv->rf_mode = XC_RF_MODE_AIR; + break; + case SYS_DVBC_ANNEX_A: + case SYS_DVBC_ANNEX_C: + dprintk(1, "%s() QAM modulation\n", __func__); + priv->rf_mode = XC_RF_MODE_CABLE; + if (bw <= 6000000) { + priv->video_standard = DTV6; + priv->freq_offset = 1750000; + b = 6; + } else if (bw <= 7000000) { + priv->video_standard = DTV7; + priv->freq_offset = 2250000; + b = 7; + } else { + priv->video_standard = DTV7_8; + priv->freq_offset = 2750000; + b = 8; + } + dprintk(1, "%s() Bandwidth %dMHz (%d)\n", __func__, + b, bw); + break; + default: + printk(KERN_ERR "xc5000: delivery system is not supported!\n"); + return -EINVAL; + } + + priv->freq_hz = freq - priv->freq_offset; + priv->mode = V4L2_TUNER_DIGITAL_TV; + + dprintk(1, "%s() frequency=%d (compensated to %d)\n", + __func__, freq, priv->freq_hz); + + return xc5000_tune_digital(fe); +} + +static int xc5000_is_firmware_loaded(struct dvb_frontend *fe) +{ + struct xc5000_priv *priv = fe->tuner_priv; + int ret; + u16 id; + + ret = xc5000_readreg(priv, XREG_PRODUCT_ID, &id); + if (ret == 0) { + if (id == XC_PRODUCT_ID_FW_NOT_LOADED) + ret = -ENOENT; + else + ret = 0; + } + + dprintk(1, "%s() returns %s id = 0x%x\n", __func__, + ret == 0 ? "True" : "False", id); + return ret; +} + +static void xc5000_config_tv(struct dvb_frontend *fe, + struct analog_parameters *params) +{ + struct xc5000_priv *priv = fe->tuner_priv; + + dprintk(1, "%s() frequency=%d (in units of 62.5khz)\n", + __func__, params->frequency); + + /* Fix me: it could be air. */ + priv->rf_mode = params->mode; + if (params->mode > XC_RF_MODE_CABLE) + priv->rf_mode = XC_RF_MODE_CABLE; + + /* params->frequency is in units of 62.5khz */ + priv->freq_hz = params->frequency * 62500; + + /* FIX ME: Some video standards may have several possible audio + standards. We simply default to one of them here. + */ + if (params->std & V4L2_STD_MN) { + /* default to BTSC audio standard */ + priv->video_standard = MN_NTSC_PAL_BTSC; + return; + } + + if (params->std & V4L2_STD_PAL_BG) { + /* default to NICAM audio standard */ + priv->video_standard = BG_PAL_NICAM; + return; + } + + if (params->std & V4L2_STD_PAL_I) { + /* default to NICAM audio standard */ + priv->video_standard = I_PAL_NICAM; + return; + } + + if (params->std & V4L2_STD_PAL_DK) { + /* default to NICAM audio standard */ + priv->video_standard = DK_PAL_NICAM; + return; + } + + if (params->std & V4L2_STD_SECAM_DK) { + /* default to A2 DK1 audio standard */ + priv->video_standard = DK_SECAM_A2DK1; + return; + } + + if (params->std & V4L2_STD_SECAM_L) { + priv->video_standard = L_SECAM_NICAM; + return; + } + + if (params->std & V4L2_STD_SECAM_LC) { + priv->video_standard = LC_SECAM_NICAM; + return; + } +} + +static int xc5000_set_tv_freq(struct dvb_frontend *fe) +{ + struct xc5000_priv *priv = fe->tuner_priv; + u16 pll_lock_status; + int ret; + +tune_channel: + ret = xc_set_signal_source(priv, priv->rf_mode); + if (ret != 0) { + printk(KERN_ERR + "xc5000: xc_set_signal_source(%d) failed\n", + priv->rf_mode); + return -EREMOTEIO; + } + + ret = xc_set_tv_standard(priv, + xc5000_standard[priv->video_standard].video_mode, + xc5000_standard[priv->video_standard].audio_mode, 0); + if (ret != 0) { + printk(KERN_ERR "xc5000: xc_set_tv_standard failed\n"); + return -EREMOTEIO; + } + + xc_write_reg(priv, XREG_OUTPUT_AMP, 0x09); + + xc_tune_channel(priv, priv->freq_hz, XC_TUNE_ANALOG); + + if (debug) + xc_debug_dump(priv); + + if (priv->pll_register_no != 0) { + msleep(20); + xc5000_readreg(priv, priv->pll_register_no, &pll_lock_status); + if (pll_lock_status > 63) { + /* PLL is unlocked, force reload of the firmware */ + dprintk(1, "xc5000: PLL not locked (0x%x). Reloading...\n", + pll_lock_status); + if (xc_load_fw_and_init_tuner(fe, 1) != 0) { + printk(KERN_ERR "xc5000: Unable to reload fw\n"); + return -EREMOTEIO; + } + goto tune_channel; + } + } + + return 0; +} + +static int xc5000_config_radio(struct dvb_frontend *fe, + struct analog_parameters *params) + +{ + struct xc5000_priv *priv = fe->tuner_priv; + + dprintk(1, "%s() frequency=%d (in units of khz)\n", + __func__, params->frequency); + + if (priv->radio_input == XC5000_RADIO_NOT_CONFIGURED) { + dprintk(1, "%s() radio input not configured\n", __func__); + return -EINVAL; + } + + priv->freq_hz = params->frequency * 125 / 2; + priv->rf_mode = XC_RF_MODE_AIR; + + return 0; +} + +static int xc5000_set_radio_freq(struct dvb_frontend *fe) +{ + struct xc5000_priv *priv = fe->tuner_priv; + int ret; + u8 radio_input; + + if (priv->radio_input == XC5000_RADIO_FM1) + radio_input = FM_RADIO_INPUT1; + else if (priv->radio_input == XC5000_RADIO_FM2) + radio_input = FM_RADIO_INPUT2; + else if (priv->radio_input == XC5000_RADIO_FM1_MONO) + radio_input = FM_RADIO_INPUT1_MONO; + else { + dprintk(1, "%s() unknown radio input %d\n", __func__, + priv->radio_input); + return -EINVAL; + } + + ret = xc_set_tv_standard(priv, xc5000_standard[radio_input].video_mode, + xc5000_standard[radio_input].audio_mode, radio_input); + + if (ret != 0) { + printk(KERN_ERR "xc5000: xc_set_tv_standard failed\n"); + return -EREMOTEIO; + } + + ret = xc_set_signal_source(priv, priv->rf_mode); + if (ret != 0) { + printk(KERN_ERR + "xc5000: xc_set_signal_source(%d) failed\n", + priv->rf_mode); + return -EREMOTEIO; + } + + if ((priv->radio_input == XC5000_RADIO_FM1) || + (priv->radio_input == XC5000_RADIO_FM2)) + xc_write_reg(priv, XREG_OUTPUT_AMP, 0x09); + else if (priv->radio_input == XC5000_RADIO_FM1_MONO) + xc_write_reg(priv, XREG_OUTPUT_AMP, 0x06); + + xc_tune_channel(priv, priv->freq_hz, XC_TUNE_ANALOG); + + return 0; +} + +static int xc5000_set_params(struct dvb_frontend *fe) +{ + struct xc5000_priv *priv = fe->tuner_priv; + + if (xc_load_fw_and_init_tuner(fe, 0) != 0) { + dprintk(1, "Unable to load firmware and init tuner\n"); + return -EINVAL; + } + + switch (priv->mode) { + case V4L2_TUNER_RADIO: + return xc5000_set_radio_freq(fe); + case V4L2_TUNER_ANALOG_TV: + return xc5000_set_tv_freq(fe); + case V4L2_TUNER_DIGITAL_TV: + return xc5000_tune_digital(fe); + } + + return 0; +} + +static int xc5000_set_analog_params(struct dvb_frontend *fe, + struct analog_parameters *params) +{ + struct xc5000_priv *priv = fe->tuner_priv; + int ret; + + if (priv->i2c_props.adap == NULL) + return -EINVAL; + + switch (params->mode) { + case V4L2_TUNER_RADIO: + ret = xc5000_config_radio(fe, params); + if (ret) + return ret; + break; + case V4L2_TUNER_ANALOG_TV: + xc5000_config_tv(fe, params); + break; + default: + break; + } + priv->mode = params->mode; + + return xc5000_set_params(fe); +} + +static int xc5000_get_frequency(struct dvb_frontend *fe, u32 *freq) +{ + struct xc5000_priv *priv = fe->tuner_priv; + dprintk(1, "%s()\n", __func__); + *freq = priv->freq_hz + priv->freq_offset; + return 0; +} + +static int xc5000_get_if_frequency(struct dvb_frontend *fe, u32 *freq) +{ + struct xc5000_priv *priv = fe->tuner_priv; + dprintk(1, "%s()\n", __func__); + *freq = priv->if_khz * 1000; + return 0; +} + +static int xc5000_get_bandwidth(struct dvb_frontend *fe, u32 *bw) +{ + struct xc5000_priv *priv = fe->tuner_priv; + dprintk(1, "%s()\n", __func__); + + *bw = priv->bandwidth; + return 0; +} + +static int xc5000_get_status(struct dvb_frontend *fe, u32 *status) +{ + struct xc5000_priv *priv = fe->tuner_priv; + u16 lock_status = 0; + + xc_get_lock_status(priv, &lock_status); + + dprintk(1, "%s() lock_status = 0x%08x\n", __func__, lock_status); + + *status = lock_status; + + return 0; +} + +static int xc_load_fw_and_init_tuner(struct dvb_frontend *fe, int force) +{ + struct xc5000_priv *priv = fe->tuner_priv; + const struct xc5000_fw_cfg *desired_fw = xc5000_assign_firmware(priv->chip_id); + const struct firmware *fw; + int ret, i; + u16 pll_lock_status; + u16 fw_ck; + + cancel_delayed_work(&priv->timer_sleep); + + if (!force && xc5000_is_firmware_loaded(fe) == 0) + return 0; + + if (!priv->firmware) { + ret = reject_firmware(&fw, desired_fw->name, + priv->i2c_props.adap->dev.parent); + if (ret) { + pr_err("xc5000: Upload failed. rc %d\n", ret); + return ret; + } + dprintk(1, "firmware read %Zu bytes.\n", fw->size); + + if (fw->size != desired_fw->size) { + pr_err("xc5000: Firmware file with incorrect size\n"); + release_firmware(fw); + return -EINVAL; + } + priv->firmware = fw; + } else + fw = priv->firmware; + + /* Try up to 5 times to load firmware */ + for (i = 0; i < 5; i++) { + if (i) + printk(KERN_CONT " - retrying to upload firmware.\n"); + + ret = xc5000_fwupload(fe, desired_fw, fw); + if (ret != 0) + goto err; + + msleep(20); + + if (priv->fw_checksum_supported) { + if (xc5000_readreg(priv, XREG_FW_CHECKSUM, &fw_ck)) { + printk(KERN_ERR + "xc5000: FW checksum reading failed."); + continue; + } + + if (!fw_ck) { + printk(KERN_ERR + "xc5000: FW checksum failed = 0x%04x.", + fw_ck); + continue; + } + } + + /* Start the tuner self-calibration process */ + ret = xc_initialize(priv); + if (ret) { + printk(KERN_ERR + "xc5000: Can't request Self-callibration."); + continue; + } + + /* Wait for calibration to complete. + * We could continue but XC5000 will clock stretch subsequent + * I2C transactions until calibration is complete. This way we + * don't have to rely on clock stretching working. + */ + msleep(100); + + if (priv->init_status_supported) { + if (xc5000_readreg(priv, XREG_INIT_STATUS, &fw_ck)) { + printk(KERN_ERR + "xc5000: FW failed reading init status."); + continue; + } + + if (!fw_ck) { + printk(KERN_ERR + "xc5000: FW init status failed = 0x%04x.", + fw_ck); + continue; + } + } + + if (priv->pll_register_no) { + xc5000_readreg(priv, priv->pll_register_no, + &pll_lock_status); + if (pll_lock_status > 63) { + /* PLL is unlocked, force reload of the firmware */ + printk(KERN_ERR + "xc5000: PLL not running after fwload."); + continue; + } + } + + /* Default to "CABLE" mode */ + ret = xc_write_reg(priv, XREG_SIGNALSOURCE, XC_RF_MODE_CABLE); + if (!ret) + break; + printk(KERN_ERR "xc5000: can't set to cable mode."); + } + +err: + if (!ret) + printk(KERN_INFO "xc5000: Firmware %s loaded and running.\n", + desired_fw->name); + else + printk(KERN_CONT " - too many retries. Giving up\n"); + + return ret; +} + +static void xc5000_do_timer_sleep(struct work_struct *timer_sleep) +{ + struct xc5000_priv *priv =container_of(timer_sleep, struct xc5000_priv, + timer_sleep.work); + struct dvb_frontend *fe = priv->fe; + int ret; + + dprintk(1, "%s()\n", __func__); + + /* According to Xceive technical support, the "powerdown" register + was removed in newer versions of the firmware. The "supported" + way to sleep the tuner is to pull the reset pin low for 10ms */ + ret = xc5000_tuner_reset(fe); + if (ret != 0) + printk(KERN_ERR + "xc5000: %s() unable to shutdown tuner\n", + __func__); +} + +static int xc5000_sleep(struct dvb_frontend *fe) +{ + struct xc5000_priv *priv = fe->tuner_priv; + + dprintk(1, "%s()\n", __func__); + + /* Avoid firmware reload on slow devices */ + if (no_poweroff) + return 0; + + schedule_delayed_work(&priv->timer_sleep, + msecs_to_jiffies(XC5000_SLEEP_TIME)); + + return 0; +} + +static int xc5000_suspend(struct dvb_frontend *fe) +{ + struct xc5000_priv *priv = fe->tuner_priv; + int ret; + + dprintk(1, "%s()\n", __func__); + + cancel_delayed_work(&priv->timer_sleep); + + ret = xc5000_tuner_reset(fe); + if (ret != 0) + printk(KERN_ERR + "xc5000: %s() unable to shutdown tuner\n", + __func__); + + return 0; +} + +static int xc5000_resume(struct dvb_frontend *fe) +{ + struct xc5000_priv *priv = fe->tuner_priv; + + dprintk(1, "%s()\n", __func__); + + /* suspended before firmware is loaded. + Avoid firmware load in resume path. */ + if (!priv->firmware) + return 0; + + return xc5000_set_params(fe); +} + +static int xc5000_init(struct dvb_frontend *fe) +{ + struct xc5000_priv *priv = fe->tuner_priv; + dprintk(1, "%s()\n", __func__); + + if (xc_load_fw_and_init_tuner(fe, 0) != 0) { + printk(KERN_ERR "xc5000: Unable to initialise tuner\n"); + return -EREMOTEIO; + } + + if (debug) + xc_debug_dump(priv); + + return 0; +} + +static int xc5000_release(struct dvb_frontend *fe) +{ + struct xc5000_priv *priv = fe->tuner_priv; + + dprintk(1, "%s()\n", __func__); + + mutex_lock(&xc5000_list_mutex); + + if (priv) { + cancel_delayed_work(&priv->timer_sleep); + if (priv->firmware) { + release_firmware(priv->firmware); + priv->firmware = NULL; + } + hybrid_tuner_release_state(priv); + } + + mutex_unlock(&xc5000_list_mutex); + + fe->tuner_priv = NULL; + + return 0; +} + +static int xc5000_set_config(struct dvb_frontend *fe, void *priv_cfg) +{ + struct xc5000_priv *priv = fe->tuner_priv; + struct xc5000_config *p = priv_cfg; + + dprintk(1, "%s()\n", __func__); + + if (p->if_khz) + priv->if_khz = p->if_khz; + + if (p->radio_input) + priv->radio_input = p->radio_input; + + if (p->output_amp) + priv->output_amp = p->output_amp; + + return 0; +} + + +static const struct dvb_tuner_ops xc5000_tuner_ops = { + .info = { + .name = "Xceive XC5000", + .frequency_min = 1000000, + .frequency_max = 1023000000, + .frequency_step = 50000, + }, + + .release = xc5000_release, + .init = xc5000_init, + .sleep = xc5000_sleep, + .suspend = xc5000_suspend, + .resume = xc5000_resume, + + .set_config = xc5000_set_config, + .set_params = xc5000_set_digital_params, + .set_analog_params = xc5000_set_analog_params, + .get_frequency = xc5000_get_frequency, + .get_if_frequency = xc5000_get_if_frequency, + .get_bandwidth = xc5000_get_bandwidth, + .get_status = xc5000_get_status +}; + +struct dvb_frontend *xc5000_attach(struct dvb_frontend *fe, + struct i2c_adapter *i2c, + const struct xc5000_config *cfg) +{ + struct xc5000_priv *priv = NULL; + int instance; + u16 id = 0; + + dprintk(1, "%s(%d-%04x)\n", __func__, + i2c ? i2c_adapter_id(i2c) : -1, + cfg ? cfg->i2c_address : -1); + + mutex_lock(&xc5000_list_mutex); + + instance = hybrid_tuner_request_state(struct xc5000_priv, priv, + hybrid_tuner_instance_list, + i2c, cfg->i2c_address, "xc5000"); + switch (instance) { + case 0: + goto fail; + case 1: + /* new tuner instance */ + priv->bandwidth = 6000000; + fe->tuner_priv = priv; + priv->fe = fe; + INIT_DELAYED_WORK(&priv->timer_sleep, xc5000_do_timer_sleep); + break; + default: + /* existing tuner instance */ + fe->tuner_priv = priv; + break; + } + + if (priv->if_khz == 0) { + /* If the IF hasn't been set yet, use the value provided by + the caller (occurs in hybrid devices where the analog + call to xc5000_attach occurs before the digital side) */ + priv->if_khz = cfg->if_khz; + } + + if (priv->xtal_khz == 0) + priv->xtal_khz = cfg->xtal_khz; + + if (priv->radio_input == 0) + priv->radio_input = cfg->radio_input; + + /* don't override chip id if it's already been set + unless explicitly specified */ + if ((priv->chip_id == 0) || (cfg->chip_id)) + /* use default chip id if none specified, set to 0 so + it can be overridden if this is a hybrid driver */ + priv->chip_id = (cfg->chip_id) ? cfg->chip_id : 0; + + /* don't override output_amp if it's already been set + unless explicitly specified */ + if ((priv->output_amp == 0) || (cfg->output_amp)) + /* use default output_amp value if none specified */ + priv->output_amp = (cfg->output_amp) ? cfg->output_amp : 0x8a; + + /* Check if firmware has been loaded. It is possible that another + instance of the driver has loaded the firmware. + */ + if (xc5000_readreg(priv, XREG_PRODUCT_ID, &id) != 0) + goto fail; + + switch (id) { + case XC_PRODUCT_ID_FW_LOADED: + printk(KERN_INFO + "xc5000: Successfully identified at address 0x%02x\n", + cfg->i2c_address); + printk(KERN_INFO + "xc5000: Firmware has been loaded previously\n"); + break; + case XC_PRODUCT_ID_FW_NOT_LOADED: + printk(KERN_INFO + "xc5000: Successfully identified at address 0x%02x\n", + cfg->i2c_address); + printk(KERN_INFO + "xc5000: Firmware has not been loaded previously\n"); + break; + default: + printk(KERN_ERR + "xc5000: Device not found at addr 0x%02x (0x%x)\n", + cfg->i2c_address, id); + goto fail; + } + + mutex_unlock(&xc5000_list_mutex); + + memcpy(&fe->ops.tuner_ops, &xc5000_tuner_ops, + sizeof(struct dvb_tuner_ops)); + + return fe; +fail: + mutex_unlock(&xc5000_list_mutex); + + xc5000_release(fe); + return NULL; +} +EXPORT_SYMBOL(xc5000_attach); + +MODULE_AUTHOR("Steven Toth"); +MODULE_DESCRIPTION("Xceive xc5000 silicon tuner driver"); +MODULE_LICENSE("GPL"); +/*(DEBLOBBED)*/ |