diff options
Diffstat (limited to 'drivers/media/dvb/frontends/stb0899_drv.c')
| -rw-r--r-- | drivers/media/dvb/frontends/stb0899_drv.c | 1684 |
1 files changed, 1684 insertions, 0 deletions
diff --git a/drivers/media/dvb/frontends/stb0899_drv.c b/drivers/media/dvb/frontends/stb0899_drv.c new file mode 100644 index 000000000000..528820170228 --- /dev/null +++ b/drivers/media/dvb/frontends/stb0899_drv.c @@ -0,0 +1,1684 @@ +/* + STB0899 Multistandard Frontend driver + Copyright (C) Manu Abraham (abraham.manu@gmail.com) + + Copyright (C) ST Microelectronics + + 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/init.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/string.h> + +#include <linux/dvb/frontend.h> +#include "dvb_frontend.h" + +#include "stb0899_drv.h" +#include "stb0899_priv.h" +#include "stb0899_reg.h" + +static unsigned int verbose = 0;//1; +module_param(verbose, int, 0644); + +/* C/N in dB/10, NIRM/NIRL */ +static const struct stb0899_tab stb0899_cn_tab[] = { + { 200, 2600 }, + { 190, 2700 }, + { 180, 2860 }, + { 170, 3020 }, + { 160, 3210 }, + { 150, 3440 }, + { 140, 3710 }, + { 130, 4010 }, + { 120, 4360 }, + { 110, 4740 }, + { 100, 5190 }, + { 90, 5670 }, + { 80, 6200 }, + { 70, 6770 }, + { 60, 7360 }, + { 50, 7970 }, + { 40, 8250 }, + { 30, 9000 }, + { 20, 9450 }, + { 15, 9600 }, +}; + +/* DVB-S AGCIQ_VALUE vs. signal level in dBm/10. + * As measured, connected to a modulator. + * -8.0 to -50.0 dBm directly connected, + * -52.0 to -74.8 with extra attenuation. + * Cut-off to AGCIQ_VALUE = 0x80 below -74.8dBm. + * Crude linear extrapolation below -84.8dBm and above -8.0dBm. + */ +static const struct stb0899_tab stb0899_dvbsrf_tab[] = { + { -950, -128 }, + { -748, -94 }, + { -745, -92 }, + { -735, -90 }, + { -720, -87 }, + { -670, -77 }, + { -640, -70 }, + { -610, -62 }, + { -600, -60 }, + { -590, -56 }, + { -560, -41 }, + { -540, -25 }, + { -530, -17 }, + { -520, -11 }, + { -500, 1 }, + { -490, 6 }, + { -480, 10 }, + { -440, 22 }, + { -420, 27 }, + { -400, 31 }, + { -380, 34 }, + { -340, 40 }, + { -320, 43 }, + { -280, 48 }, + { -250, 52 }, + { -230, 55 }, + { -180, 61 }, + { -140, 66 }, + { -90, 73 }, + { -80, 74 }, + { 500, 127 } +}; + +/* DVB-S2 IF_AGC_GAIN vs. signal level in dBm/10. + * As measured, connected to a modulator. + * -8.0 to -50.1 dBm directly connected, + * -53.0 to -76.6 with extra attenuation. + * Cut-off to IF_AGC_GAIN = 0x3fff below -76.6dBm. + * Crude linear extrapolation below -76.6dBm and above -8.0dBm. + */ +static const struct stb0899_tab stb0899_dvbs2rf_tab[] = { + { 700, 0 }, + { -80, 3217 }, + { -150, 3893 }, + { -190, 4217 }, + { -240, 4621 }, + { -280, 4945 }, + { -320, 5273 }, + { -350, 5545 }, + { -370, 5741 }, + { -410, 6147 }, + { -450, 6671 }, + { -490, 7413 }, + { -501, 7665 }, + { -530, 8767 }, + { -560, 10219 }, + { -580, 10939 }, + { -590, 11518 }, + { -600, 11723 }, + { -650, 12659 }, + { -690, 13219 }, + { -730, 13645 }, + { -750, 13909 }, + { -766, 14153 }, + { -999, 16383 } +}; + +/* DVB-S2 Es/N0 quant in dB/100 vs read value * 100*/ +struct stb0899_tab stb0899_quant_tab[] = { + { 0, 0 }, + { 0, 100 }, + { 600, 200 }, + { 950, 299 }, + { 1200, 398 }, + { 1400, 501 }, + { 1560, 603 }, + { 1690, 700 }, + { 1810, 804 }, + { 1910, 902 }, + { 2000, 1000 }, + { 2080, 1096 }, + { 2160, 1202 }, + { 2230, 1303 }, + { 2350, 1496 }, + { 2410, 1603 }, + { 2460, 1698 }, + { 2510, 1799 }, + { 2600, 1995 }, + { 2650, 2113 }, + { 2690, 2213 }, + { 2720, 2291 }, + { 2760, 2399 }, + { 2800, 2512 }, + { 2860, 2692 }, + { 2930, 2917 }, + { 2960, 3020 }, + { 3010, 3199 }, + { 3040, 3311 }, + { 3060, 3388 }, + { 3120, 3631 }, + { 3190, 3936 }, + { 3400, 5012 }, + { 3610, 6383 }, + { 3800, 7943 }, + { 4210, 12735 }, + { 4500, 17783 }, + { 4690, 22131 }, + { 4810, 25410 } +}; + +/* DVB-S2 Es/N0 estimate in dB/100 vs read value */ +struct stb0899_tab stb0899_est_tab[] = { + { 0, 0 }, + { 0, 1 }, + { 301, 2 }, + { 1204, 16 }, + { 1806, 64 }, + { 2408, 256 }, + { 2709, 512 }, + { 3010, 1023 }, + { 3311, 2046 }, + { 3612, 4093 }, + { 3823, 6653 }, + { 3913, 8185 }, + { 4010, 10233 }, + { 4107, 12794 }, + { 4214, 16368 }, + { 4266, 18450 }, + { 4311, 20464 }, + { 4353, 22542 }, + { 4391, 24604 }, + { 4425, 26607 }, + { 4457, 28642 }, + { 4487, 30690 }, + { 4515, 32734 }, + { 4612, 40926 }, + { 4692, 49204 }, + { 4816, 65464 }, + { 4913, 81846 }, + { 4993, 98401 }, + { 5060, 114815 }, + { 5118, 131220 }, + { 5200, 158489 }, + { 5300, 199526 }, + { 5400, 251189 }, + { 5500, 316228 }, + { 5600, 398107 }, + { 5720, 524807 }, + { 5721, 526017 }, +}; + +int _stb0899_read_reg(struct stb0899_state *state, unsigned int reg) +{ + int ret; + + u8 b0[] = { reg >> 8, reg & 0xff }; + u8 buf; + + struct i2c_msg msg[] = { + { + .addr = state->config->demod_address, + .flags = 0, + .buf = b0, + .len = 2 + },{ + .addr = state->config->demod_address, + .flags = I2C_M_RD, + .buf = &buf, + .len = 1 + } + }; + + ret = i2c_transfer(state->i2c, msg, 2); + if (ret != 2) { + if (ret != -ERESTARTSYS) + dprintk(state->verbose, FE_ERROR, 1, + "Read error, Reg=[0x%02x], Status=%d", + reg, ret); + + return ret < 0 ? ret : -EREMOTEIO; + } + if (unlikely(*state->verbose >= FE_DEBUGREG)) + dprintk(state->verbose, FE_ERROR, 1, "Reg=[0x%02x], data=%02x", + reg, buf); + + return (unsigned int)buf; +} + +int stb0899_read_reg(struct stb0899_state *state, unsigned int reg) +{ + int result; + + result = _stb0899_read_reg(state, reg); + /* + * Bug ID 9: + * access to 0xf2xx/0xf6xx + * must be followed by read from 0xf2ff/0xf6ff. + */ + if ((reg != 0xf2ff) && (reg != 0xf6ff) && + (((reg & 0xff00) == 0xf200) || ((reg & 0xff00) == 0xf600))) + _stb0899_read_reg(state, (reg | 0x00ff)); + + return result; +} + +u32 _stb0899_read_s2reg(struct stb0899_state *state, + u32 stb0899_i2cdev, + u32 stb0899_base_addr, + u16 stb0899_reg_offset) +{ + int status; + u32 data; + u8 buf[7] = { 0 }; + u16 tmpaddr; + + u8 buf_0[] = { + GETBYTE(stb0899_i2cdev, BYTE1), /* 0xf3 S2 Base Address (MSB) */ + GETBYTE(stb0899_i2cdev, BYTE0), /* 0xfc S2 Base Address (LSB) */ + GETBYTE(stb0899_base_addr, BYTE0), /* 0x00 Base Address (LSB) */ + GETBYTE(stb0899_base_addr, BYTE1), /* 0x04 Base Address (LSB) */ + GETBYTE(stb0899_base_addr, BYTE2), /* 0x00 Base Address (MSB) */ + GETBYTE(stb0899_base_addr, BYTE3), /* 0x00 Base Address (MSB) */ + }; + u8 buf_1[] = { + 0x00, /* 0xf3 Reg Offset */ + 0x00, /* 0x44 Reg Offset */ + }; + + struct i2c_msg msg_0 = { + .addr = state->config->demod_address, + .flags = 0, + .buf = buf_0, + .len = 6 + }; + + struct i2c_msg msg_1 = { + .addr = state->config->demod_address, + .flags = 0, + .buf = buf_1, + .len = 2 + }; + + struct i2c_msg msg_r = { + .addr = state->config->demod_address, + .flags = I2C_M_RD, + .buf = buf, + .len = 4 + }; + + tmpaddr = stb0899_reg_offset & 0xff00; + if (!(stb0899_reg_offset & 0x8)) + tmpaddr = stb0899_reg_offset | 0x20; + + buf_1[0] = GETBYTE(tmpaddr, BYTE1); + buf_1[1] = GETBYTE(tmpaddr, BYTE0); + + status = i2c_transfer(state->i2c, &msg_0, 1); + if (status < 1) { + if (status != -ERESTARTSYS) + printk(KERN_ERR "%s ERR(1), Device=[0x%04x], Base address=[0x%08x], Offset=[0x%04x], Status=%d\n", + __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, status); + + goto err; + } + + /* Dummy */ + status = i2c_transfer(state->i2c, &msg_1, 1); + if (status < 1) + goto err; + + status = i2c_transfer(state->i2c, &msg_r, 1); + if (status < 1) + goto err; + + buf_1[0] = GETBYTE(stb0899_reg_offset, BYTE1); + buf_1[1] = GETBYTE(stb0899_reg_offset, BYTE0); + + /* Actual */ + status = i2c_transfer(state->i2c, &msg_1, 1); + if (status < 1) { + if (status != -ERESTARTSYS) + printk(KERN_ERR "%s ERR(2), Device=[0x%04x], Base address=[0x%08x], Offset=[0x%04x], Status=%d\n", + __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, status); + goto err; + } + + status = i2c_transfer(state->i2c, &msg_r, 1); + if (status < 1) { + if (status != -ERESTARTSYS) + printk(KERN_ERR "%s ERR(3), Device=[0x%04x], Base address=[0x%08x], Offset=[0x%04x], Status=%d\n", + __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, status); + return status < 0 ? status : -EREMOTEIO; + } + + data = MAKEWORD32(buf[3], buf[2], buf[1], buf[0]); + if (unlikely(*state->verbose >= FE_DEBUGREG)) + printk(KERN_DEBUG "%s Device=[0x%04x], Base address=[0x%08x], Offset=[0x%04x], Data=[0x%08x]\n", + __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, data); + + return data; + +err: + return status < 0 ? status : -EREMOTEIO; +} + +int stb0899_write_s2reg(struct stb0899_state *state, + u32 stb0899_i2cdev, + u32 stb0899_base_addr, + u16 stb0899_reg_offset, + u32 stb0899_data) +{ + int status; + + /* Base Address Setup */ + u8 buf_0[] = { + GETBYTE(stb0899_i2cdev, BYTE1), /* 0xf3 S2 Base Address (MSB) */ + GETBYTE(stb0899_i2cdev, BYTE0), /* 0xfc S2 Base Address (LSB) */ + GETBYTE(stb0899_base_addr, BYTE0), /* 0x00 Base Address (LSB) */ + GETBYTE(stb0899_base_addr, BYTE1), /* 0x04 Base Address (LSB) */ + GETBYTE(stb0899_base_addr, BYTE2), /* 0x00 Base Address (MSB) */ + GETBYTE(stb0899_base_addr, BYTE3), /* 0x00 Base Address (MSB) */ + }; + u8 buf_1[] = { + 0x00, /* 0xf3 Reg Offset */ + 0x00, /* 0x44 Reg Offset */ + 0x00, /* data */ + 0x00, /* data */ + 0x00, /* data */ + 0x00, /* data */ + }; + + struct i2c_msg msg_0 = { + .addr = state->config->demod_address, + .flags = 0, + .buf = buf_0, + .len = 6 + }; + + struct i2c_msg msg_1 = { + .addr = state->config->demod_address, + .flags = 0, + .buf = buf_1, + .len = 6 + }; + + buf_1[0] = GETBYTE(stb0899_reg_offset, BYTE1); + buf_1[1] = GETBYTE(stb0899_reg_offset, BYTE0); + buf_1[2] = GETBYTE(stb0899_data, BYTE0); + buf_1[3] = GETBYTE(stb0899_data, BYTE1); + buf_1[4] = GETBYTE(stb0899_data, BYTE2); + buf_1[5] = GETBYTE(stb0899_data, BYTE3); + + if (unlikely(*state->verbose >= FE_DEBUGREG)) + printk(KERN_DEBUG "%s Device=[0x%04x], Base Address=[0x%08x], Offset=[0x%04x], Data=[0x%08x]\n", + __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, stb0899_data); + + status = i2c_transfer(state->i2c, &msg_0, 1); + if (unlikely(status < 1)) { + if (status != -ERESTARTSYS) + printk(KERN_ERR "%s ERR (1), Device=[0x%04x], Base Address=[0x%08x], Offset=[0x%04x], Data=[0x%08x], status=%d\n", + __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, stb0899_data, status); + goto err; + } + status = i2c_transfer(state->i2c, &msg_1, 1); + if (unlikely(status < 1)) { + if (status != -ERESTARTSYS) + printk(KERN_ERR "%s ERR (2), Device=[0x%04x], Base Address=[0x%08x], Offset=[0x%04x], Data=[0x%08x], status=%d\n", + __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, stb0899_data, status); + + return status < 0 ? status : -EREMOTEIO; + } + + return 0; + +err: + return status < 0 ? status : -EREMOTEIO; +} + +int stb0899_read_regs(struct stb0899_state *state, unsigned int reg, u8 *buf, u32 count) +{ + int status; + + u8 b0[] = { reg >> 8, reg & 0xff }; + + struct i2c_msg msg[] = { + { + .addr = state->config->demod_address, + .flags = 0, + .buf = b0, + .len = 2 + },{ + .addr = state->config->demod_address, + .flags = I2C_M_RD, + .buf = buf, + .len = count + } + }; + + status = i2c_transfer(state->i2c, msg, 2); + if (status != 2) { + if (status != -ERESTARTSYS) + printk(KERN_ERR "%s Read error, Reg=[0x%04x], Count=%u, Status=%d\n", + __func__, reg, count, status); + goto err; + } + /* + * Bug ID 9: + * access to 0xf2xx/0xf6xx + * must be followed by read from 0xf2ff/0xf6ff. + */ + if ((reg != 0xf2ff) && (reg != 0xf6ff) && + (((reg & 0xff00) == 0xf200) || ((reg & 0xff00) == 0xf600))) + _stb0899_read_reg(state, (reg | 0x00ff)); + + if (unlikely(*state->verbose >= FE_DEBUGREG)) { + int i; + + printk(KERN_DEBUG "%s [0x%04x]:", __func__, reg); + for (i = 0; i < count; i++) { + printk(" %02x", buf[i]); + } + printk("\n"); + } + + return 0; +err: + return status < 0 ? status : -EREMOTEIO; +} + +int stb0899_write_regs(struct stb0899_state *state, unsigned int reg, u8 *data, u32 count) +{ + int ret; + u8 buf[2 + count]; + struct i2c_msg i2c_msg = { + .addr = state->config->demod_address, + .flags = 0, + .buf = buf, + .len = 2 + count + }; + + buf[0] = reg >> 8; + buf[1] = reg & 0xff; + memcpy(&buf[2], data, count); + + if (unlikely(*state->verbose >= FE_DEBUGREG)) { + int i; + + printk(KERN_DEBUG "%s [0x%04x]:", __func__, reg); + for (i = 0; i < count; i++) + printk(" %02x", data[i]); + printk("\n"); + } + ret = i2c_transfer(state->i2c, &i2c_msg, 1); + + /* + * Bug ID 9: + * access to 0xf2xx/0xf6xx + * must be followed by read from 0xf2ff/0xf6ff. + */ + if ((((reg & 0xff00) == 0xf200) || ((reg & 0xff00) == 0xf600))) + stb0899_read_reg(state, (reg | 0x00ff)); + + if (ret != 1) { + if (ret != -ERESTARTSYS) + dprintk(state->verbose, FE_ERROR, 1, "Reg=[0x%04x], Data=[0x%02x ...], Count=%u, Status=%d", + reg, data[0], count, ret); + return ret < 0 ? ret : -EREMOTEIO; + } + + return 0; +} + +int stb0899_write_reg(struct stb0899_state *state, unsigned int reg, u8 data) +{ + return stb0899_write_regs(state, reg, &data, 1); +} + +/* + * stb0899_get_mclk + * Get STB0899 master clock frequency + * ExtClk: external clock frequency (Hz) + */ +static u32 stb0899_get_mclk(struct stb0899_state *state) +{ + u32 mclk = 0, div = 0; + + div = stb0899_read_reg(state, STB0899_NCOARSE); + mclk = (div + 1) * state->config->xtal_freq / 6; + dprintk(state->verbose, FE_DEBUG, 1, "div=%d, mclk=%d", div, mclk); + + return mclk; +} + +/* + * stb0899_set_mclk + * Set STB0899 master Clock frequency + * Mclk: demodulator master clock + * ExtClk: external clock frequency (Hz) + */ +static void stb0899_set_mclk(struct stb0899_state *state, u32 Mclk) +{ + struct stb0899_internal *internal = &state->internal; + u8 mdiv = 0; + + dprintk(state->verbose, FE_DEBUG, 1, "state->config=%p", state->config); + mdiv = ((6 * Mclk) / state->config->xtal_freq) - 1; + dprintk(state->verbose, FE_DEBUG, 1, "mdiv=%d", mdiv); + + stb0899_write_reg(state, STB0899_NCOARSE, mdiv); + internal->master_clk = stb0899_get_mclk(state); + + dprintk(state->verbose, FE_DEBUG, 1, "MasterCLOCK=%d", internal->master_clk); +} + +static int stb0899_postproc(struct stb0899_state *state, u8 ctl, int enable) +{ + struct stb0899_config *config = state->config; + const struct stb0899_postproc *postproc = config->postproc; + + /* post process event */ + if (postproc) { + if (enable) { + if (postproc[ctl].level == STB0899_GPIOPULLUP) + stb0899_write_reg(state, postproc[ctl].gpio, 0x02); + else + stb0899_write_reg(state, postproc[ctl].gpio, 0x82); + } else { + if (postproc[ctl].level == STB0899_GPIOPULLUP) + stb0899_write_reg(state, postproc[ctl].gpio, 0x82); + else + stb0899_write_reg(state, postproc[ctl].gpio, 0x02); + } + } + return 0; +} + +static void stb0899_release(struct dvb_frontend *fe) +{ + struct stb0899_state *state = fe->demodulator_priv; + + dprintk(state->verbose, FE_DEBUG, 1, "Release Frontend"); + /* post process event */ + stb0899_postproc(state, STB0899_POSTPROC_GPIO_POWER, 0); + kfree(state); +} + +/* + * stb0899_get_alpha + * return: rolloff + */ +static int stb0899_get_alpha(struct stb0899_state *state) +{ + u8 mode_coeff; + + mode_coeff = stb0899_read_reg(state, STB0899_DEMOD); + + if (STB0899_GETFIELD(MODECOEFF, mode_coeff) == 1) + return 20; + else + return 35; +} + +/* + * stb0899_init_calc + */ +static void stb0899_init_calc(struct stb0899_state *state) +{ + struct stb0899_internal *internal = &state->internal; + int master_clk; + u8 agc[2]; + u8 agc1cn; + u32 reg; + + /* Read registers (in burst mode) */ + agc1cn = stb0899_read_reg(state, STB0899_AGC1CN); + stb0899_read_regs(state, STB0899_AGC1REF, agc, 2); /* AGC1R and AGC2O */ + + /* Initial calculations */ + master_clk = stb0899_get_mclk(state); + internal->t_agc1 = 0; + internal->t_agc2 = 0; + internal->master_clk = master_clk; + internal->mclk = master_clk / 65536L; + internal->rolloff = stb0899_get_alpha(state); + + /* DVBS2 Initial calculations */ + /* Set AGC value to the middle */ + internal->agc_gain = 8154; + reg = STB0899_READ_S2REG(STB0899_S2DEMOD, IF_AGC_CNTRL); + STB0899_SETFIELD_VAL(IF_GAIN_INIT, reg, internal->agc_gain); + stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_IF_AGC_CNTRL, STB0899_OFF0_IF_AGC_CNTRL, reg); + + reg = STB0899_READ_S2REG(STB0899_S2DEMOD, RRC_ALPHA); + internal->rrc_alpha = STB0899_GETFIELD(RRC_ALPHA, reg); + + internal->center_freq = 0; + internal->av_frame_coarse = 10; + internal->av_frame_fine = 20; + internal->step_size = 2; +/* + if ((pParams->SpectralInv == FE_IQ_NORMAL) || (pParams->SpectralInv == FE_IQ_AUTO)) + pParams->IQLocked = 0; + else + pParams->IQLocked = 1; +*/ +} + +static int stb0899_wait_diseqc_fifo_empty(struct stb0899_state *state, int timeout) +{ + u8 reg = 0; + unsigned long start = jiffies; + + while (1) { + reg = stb0899_read_reg(state, STB0899_DISSTATUS); + if (!STB0899_GETFIELD(FIFOFULL, reg)) + break; + if ((jiffies - start) > timeout) { + dprintk(state->verbose, FE_ERROR, 1, "timed out !!"); + return -ETIMEDOUT; + } + } + + return 0; +} + +static int stb0899_send_diseqc_msg(struct dvb_frontend *fe, struct dvb_diseqc_master_cmd *cmd) +{ + struct stb0899_state *state = fe->demodulator_priv; + u8 reg, i; + + if (cmd->msg_len > 8) + return -EINVAL; + + /* enable FIFO precharge */ + reg = stb0899_read_reg(state, STB0899_DISCNTRL1); + STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 1); + stb0899_write_reg(state, STB0899_DISCNTRL1, reg); + for (i = 0; i < cmd->msg_len; i++) { + /* wait for FIFO empty */ + if (stb0899_wait_diseqc_fifo_empty(state, 10) < 0) + return -ETIMEDOUT; + + stb0899_write_reg(state, STB0899_DISFIFO, cmd->msg[i]); + } + reg = stb0899_read_reg(state, STB0899_DISCNTRL1); + STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 0); + stb0899_write_reg(state, STB0899_DISCNTRL1, reg); + + return 0; +} + +static int stb0899_wait_diseqc_rxidle(struct stb0899_state *state, int timeout) +{ + u8 reg = 0; + unsigned long start = jiffies; + + while (!STB0899_GETFIELD(RXEND, reg)) { + reg = stb0899_read_reg(state, STB0899_DISRX_ST0); + if (jiffies - start > timeout) { + dprintk(state->verbose, FE_ERROR, 1, "timed out!!"); + return -ETIMEDOUT; + } + msleep(10); + } + + return 0; +} + +static int stb0899_recv_slave_reply(struct dvb_frontend *fe, struct dvb_diseqc_slave_reply *reply) +{ + struct stb0899_state *state = fe->demodulator_priv; + u8 reg, length = 0, i; + int result; + + if (stb0899_wait_diseqc_rxidle(state, 100) < 0) + return -ETIMEDOUT; + + reg = stb0899_read_reg(state, STB0899_DISRX_ST0); + if (STB0899_GETFIELD(RXEND, reg)) { + + reg = stb0899_read_reg(state, STB0899_DISRX_ST1); + length = STB0899_GETFIELD(FIFOBYTENBR, reg); + + if (length > sizeof (reply->msg)) { + result = -EOVERFLOW; + goto exit; + } + reply->msg_len = length; + + /* extract data */ + for (i = 0; i < length; i++) + reply->msg[i] = stb0899_read_reg(state, STB0899_DISFIFO); + } + + return 0; +exit: + + return result; +} + +static int stb0899_wait_diseqc_txidle(struct stb0899_state *state, int timeout) +{ + u8 reg = 0; + unsigned long start = jiffies; + + while (!STB0899_GETFIELD(TXIDLE, reg)) { + reg = stb0899_read_reg(state, STB0899_DISSTATUS); + if (jiffies - start > timeout) { + dprintk(state->verbose, FE_ERROR, 1, "timed out!!"); + return -ETIMEDOUT; + } + msleep(10); + } + return 0; +} + +static int stb0899_send_diseqc_burst(struct dvb_frontend *fe, fe_sec_mini_cmd_t burst) +{ + struct stb0899_state *state = fe->demodulator_priv; + u8 reg, old_state; + + /* wait for diseqc idle */ + if (stb0899_wait_diseqc_txidle(state, 100) < 0) + return -ETIMEDOUT; + + reg = stb0899_read_reg(state, STB0899_DISCNTRL1); + old_state = reg; + /* set to burst mode */ + STB0899_SETFIELD_VAL(DISEQCMODE, reg, 0x02); + STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 0x01); + stb0899_write_reg(state, STB0899_DISCNTRL1, reg); + switch (burst) { + case SEC_MINI_A: + /* unmodulated */ + stb0899_write_reg(state, STB0899_DISFIFO, 0x00); + break; + case SEC_MINI_B: + /* modulated */ + stb0899_write_reg(state, STB0899_DISFIFO, 0xff); + break; + } + reg = stb0899_read_reg(state, STB0899_DISCNTRL1); + STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 0x00); + stb0899_write_reg(state, STB0899_DISCNTRL1, reg); + /* wait for diseqc idle */ + if (stb0899_wait_diseqc_txidle(state, 100) < 0) + return -ETIMEDOUT; + + /* restore state */ + stb0899_write_reg(state, STB0899_DISCNTRL1, old_state); + + return 0; +} + +static int stb0899_diseqc_init(struct stb0899_state *state) +{ + struct dvb_diseqc_master_cmd tx_data; +/* + struct dvb_diseqc_slave_reply rx_data; +*/ + u8 f22_tx, f22_rx, reg; + + u32 mclk, tx_freq = 22000;/* count = 0, i; */ + tx_data.msg[0] = 0xe2; + tx_data.msg_len = 3; + reg = stb0899_read_reg(state, STB0899_DISCNTRL2); + STB0899_SETFIELD_VAL(ONECHIP_TRX, reg, 0); + stb0899_write_reg(state, STB0899_DISCNTRL2, reg); + + /* disable Tx spy */ + reg = stb0899_read_reg(state, STB0899_DISCNTRL1); + STB0899_SETFIELD_VAL(DISEQCRESET, reg, 1); + stb0899_write_reg(state, STB0899_DISCNTRL1, reg); + + reg = stb0899_read_reg(state, STB0899_DISCNTRL1); + STB0899_SETFIELD_VAL(DISEQCRESET, reg, 0); + stb0899_write_reg(state, STB0899_DISCNTRL1, reg); + + mclk = stb0899_get_mclk(state); + f22_tx = mclk / (tx_freq * 32); + stb0899_write_reg(state, STB0899_DISF22, f22_tx); /* DiSEqC Tx freq */ + state->rx_freq = 20000; + f22_rx = mclk / (state->rx_freq * 32); + + return 0; +} + +static int stb0899_sleep(struct dvb_frontend *fe) +{ + struct stb0899_state *state = fe->demodulator_priv; +/* + u8 reg; +*/ + dprintk(state->verbose, FE_DEBUG, 1, "Going to Sleep .. (Really tired .. :-))"); + /* post process event */ + stb0899_postproc(state, STB0899_POSTPROC_GPIO_POWER, 0); + + return 0; +} + +static int stb0899_wakeup(struct dvb_frontend *fe) +{ + int rc; + struct stb0899_state *state = fe->demodulator_priv; + + if ((rc = stb0899_write_reg(state, STB0899_SYNTCTRL, STB0899_SELOSCI))) + return rc; + /* Activate all clocks; DVB-S2 registers are inaccessible otherwise. */ + if ((rc = stb0899_write_reg(state, STB0899_STOPCLK1, 0x00))) + return rc; + if ((rc = stb0899_write_reg(state, STB0899_STOPCLK2, 0x00))) + return rc; + + /* post process event */ + stb0899_postproc(state, STB0899_POSTPROC_GPIO_POWER, 1); + + return 0; +} + +static int stb0899_init(struct dvb_frontend *fe) +{ + int i; + struct stb0899_state *state = fe->demodulator_priv; + struct stb0899_config *config = state->config; + + dprintk(state->verbose, FE_DEBUG, 1, "Initializing STB0899 ... "); + + /* init device */ + dprintk(state->verbose, FE_DEBUG, 1, "init device"); + for (i = 0; config->init_dev[i].address != 0xffff; i++) + stb0899_write_reg(state, config->init_dev[i].address, config->init_dev[i].data); + + dprintk(state->verbose, FE_DEBUG, 1, "init S2 demod"); + /* init S2 demod */ + for (i = 0; config->init_s2_demod[i].offset != 0xffff; i++) + stb0899_write_s2reg(state, STB0899_S2DEMOD, + config->init_s2_demod[i].base_address, + config->init_s2_demod[i].offset, + config->init_s2_demod[i].data); + + dprintk(state->verbose, FE_DEBUG, 1, "init S1 demod"); + /* init S1 demod */ + for (i = 0; config->init_s1_demod[i].address != 0xffff; i++) + stb0899_write_reg(state, config->init_s1_demod[i].address, config->init_s1_demod[i].data); + + dprintk(state->verbose, FE_DEBUG, 1, "init S2 FEC"); + /* init S2 fec */ + for (i = 0; config->init_s2_fec[i].offset != 0xffff; i++) + stb0899_write_s2reg(state, STB0899_S2FEC, + config->init_s2_fec[i].base_address, + config->init_s2_fec[i].offset, + config->init_s2_fec[i].data); + + dprintk(state->verbose, FE_DEBUG, 1, "init TST"); + /* init test */ + for (i = 0; config->init_tst[i].address != 0xffff; i++) + stb0899_write_reg(state, config->init_tst[i].address, config->init_tst[i].data); + + stb0899_init_calc(state); + stb0899_diseqc_init(state); + + return 0; +} + +static int stb0899_table_lookup(const struct stb0899_tab *tab, int max, int val) +{ + int res = 0; + int min = 0, med; + + if (val < tab[min].read) + res = tab[min].real; + else if (val >= tab[max].read) + res = tab[max].real; + else { + while ((max - min) > 1) { + med = (max + min) / 2; + if (val >= tab[min].read && val < tab[med].read) + max = med; + else + min = med; + } + res = ((val - tab[min].read) * + (tab[max].real - tab[min].real) / + (tab[max].read - tab[min].read)) + + tab[min].real; + } + + return res; +} + +static int stb0899_read_signal_strength(struct dvb_frontend *fe, u16 *strength) +{ + struct stb0899_state *state = fe->demodulator_priv; + struct stb0899_internal *internal = &state->internal; + + int val; + u32 reg; + switch (state->delsys) { + case SYS_DVBS: + case SYS_DSS: + if (internal->lock) { + reg = stb0899_read_reg(state, STB0899_VSTATUS); + if (STB0899_GETFIELD(VSTATUS_LOCKEDVIT, reg)) { + + reg = stb0899_read_reg(state, STB0899_AGCIQIN); + val = (s32)(s8)STB0899_GETFIELD(AGCIQVALUE, reg); + + *strength = stb0899_table_lookup(stb0899_dvbsrf_tab, ARRAY_SIZE(stb0899_dvbsrf_tab) - 1, val); + *strength += 750; + dprintk(state->verbose, FE_DEBUG, 1, "AGCIQVALUE = 0x%02x, C = %d * 0.1 dBm", + val & 0xff, *strength); + } + } + break; + case SYS_DVBS2: + if (internal->lock) { + reg = STB0899_READ_S2REG(STB0899_DEMOD, IF_AGC_GAIN); + val = STB0899_GETFIELD(IF_AGC_GAIN, reg); + + *strength = stb0899_table_lookup(stb0899_dvbs2rf_tab, ARRAY_SIZE(stb0899_dvbs2rf_tab) - 1, val); + *strength += 750; + dprintk(state->verbose, FE_DEBUG, 1, "IF_AGC_GAIN = 0x%04x, C = %d * 0.1 dBm", + val & 0x3fff, *strength); + } + break; + default: + dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system"); + return -EINVAL; + } + + return 0; +} + +static int stb0899_read_snr(struct dvb_frontend *fe, u16 *snr) +{ + struct stb0899_state *state = fe->demodulator_priv; + struct stb0899_internal *internal = &state->internal; + + unsigned int val, quant, quantn = -1, est, estn = -1; + u8 buf[2]; + u32 reg; + + reg = stb0899_read_reg(state, STB0899_VSTATUS); + switch (state->delsys) { + case SYS_DVBS: + case SYS_DSS: + if (internal->lock) { + if (STB0899_GETFIELD(VSTATUS_LOCKEDVIT, reg)) { + + stb0899_read_regs(state, STB0899_NIRM, buf, 2); + val = MAKEWORD16(buf[0], buf[1]); + + *snr = stb0899_table_lookup(stb0899_cn_tab, ARRAY_SIZE(stb0899_cn_tab) - 1, val); + dprintk(state->verbose, FE_DEBUG, 1, "NIR = 0x%02x%02x = %u, C/N = %d * 0.1 dBm\n", + buf[0], buf[1], val, *snr); + } + } + break; + case SYS_DVBS2: + if (internal->lock) { + reg = STB0899_READ_S2REG(STB0899_S2DEMOD, UWP_CNTRL1); + quant = STB0899_GETFIELD(UWP_ESN0_QUANT, reg); + reg = STB0899_READ_S2REG(STB0899_S2DEMOD, UWP_STAT2); + est = STB0899_GETFIELD(ESN0_EST, reg); + if (est == 1) + val = 301; /* C/N = 30.1 dB */ + else if (est == 2) + val = 270; /* C/N = 27.0 dB */ + else { + /* quantn = 100 * log(quant^2) */ + quantn = stb0899_table_lookup(stb0899_quant_tab, ARRAY_SIZE(stb0899_quant_tab) - 1, quant * 100); + /* estn = 100 * log(est) */ + estn = stb0899_table_lookup(stb0899_est_tab, ARRAY_SIZE(stb0899_est_tab) - 1, est); + /* snr(dBm/10) = -10*(log(est)-log(quant^2)) => snr(dBm/10) = (100*log(quant^2)-100*log(est))/10 */ + val = (quantn - estn) / 10; + } + *snr = val; + dprintk(state->verbose, FE_DEBUG, 1, "Es/N0 quant = %d (%d) estimate = %u (%d), C/N = %d * 0.1 dBm", + quant, quantn, est, estn, val); + } + break; + default: + dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system"); + return -EINVAL; + } + + return 0; +} + +static int stb0899_read_status(struct dvb_frontend *fe, enum fe_status *status) +{ + struct stb0899_state *state = fe->demodulator_priv; + struct stb0899_internal *internal = &state->internal; + u8 reg; + *status = 0; + + switch (state->delsys) { + case SYS_DVBS: + case SYS_DSS: + dprintk(state->verbose, FE_DEBUG, 1, "Delivery system DVB-S/DSS"); + if (internal->lock) { + reg = stb0899_read_reg(state, STB0899_VSTATUS); + if (STB0899_GETFIELD(VSTATUS_LOCKEDVIT, reg)) { + dprintk(state->verbose, FE_DEBUG, 1, "--------> FE_HAS_CARRIER | FE_HAS_LOCK"); + *status |= FE_HAS_CARRIER | FE_HAS_LOCK; + + reg = stb0899_read_reg(state, STB0899_PLPARM); + if (STB0899_GETFIELD(VITCURPUN, reg)) { + dprintk(state->verbose, FE_DEBUG, 1, "--------> FE_HAS_VITERBI | FE_HAS_SYNC"); + *status |= FE_HAS_VITERBI | FE_HAS_SYNC; + /* post process event */ + stb0899_postproc(state, STB0899_POSTPROC_GPIO_LOCK, 1); + } + } + } + break; + case SYS_DVBS2: + dprintk(state->verbose, FE_DEBUG, 1, "Delivery system DVB-S2"); + if (internal->lock) { + reg = STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_STAT2); + if (STB0899_GETFIELD(UWP_LOCK, reg) && STB0899_GETFIELD(CSM_LOCK, reg)) { + *status |= FE_HAS_CARRIER; + dprintk(state->verbose, FE_DEBUG, 1, + "UWP & CSM Lock ! ---> DVB-S2 FE_HAS_CARRIER"); + + reg = stb0899_read_reg(state, STB0899_CFGPDELSTATUS1); + if (STB0899_GETFIELD(CFGPDELSTATUS_LOCK, reg)) { + *status |= FE_HAS_LOCK; + dprintk(state->verbose, FE_DEBUG, 1, + "Packet Delineator Locked ! -----> DVB-S2 FE_HAS_LOCK"); + + } + if (STB0899_GETFIELD(CONTINUOUS_STREAM, reg)) { + *status |= FE_HAS_VITERBI; + dprintk(state->verbose, FE_DEBUG, 1, + "Packet Delineator found VITERBI ! -----> DVB-S2 FE_HAS_VITERBI"); + } + if (STB0899_GETFIELD(ACCEPTED_STREAM, reg)) { + *status |= FE_HAS_SYNC; + dprintk(state->verbose, FE_DEBUG, 1, + "Packet Delineator found SYNC ! -----> DVB-S2 FE_HAS_SYNC"); + /* post process event */ + stb0899_postproc(state, STB0899_POSTPROC_GPIO_LOCK, 1); + } + } + } + break; + default: + dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system"); + return -EINVAL; + } + return 0; +} + +/* + * stb0899_get_error + * viterbi error for DVB-S/DSS + * packet error for DVB-S2 + * Bit Error Rate or Packet Error Rate * 10 ^ 7 + */ +static int stb0899_read_ber(struct dvb_frontend *fe, u32 *ber) +{ + struct stb0899_state *state = fe->demodulator_priv; + struct stb0899_internal *internal = &state->internal; + + u8 lsb, msb; + u32 i; + + *ber = 0; + + switch (state->delsys) { + case SYS_DVBS: + case SYS_DSS: + if (internal->lock) { + /* average 5 BER values */ + for (i = 0; i < 5; i++) { + msleep(100); + lsb = stb0899_read_reg(state, STB0899_ECNT1L); + msb = stb0899_read_reg(state, STB0899_ECNT1M); + *ber += MAKEWORD16(msb, lsb); + } + *ber /= 5; + /* Viterbi Check */ + if (STB0899_GETFIELD(VSTATUS_PRFVIT, internal->v_status)) { + /* Error Rate */ + *ber *= 9766; + /* ber = ber * 10 ^ 7 */ + *ber /= (-1 + (1 << (2 * STB0899_GETFIELD(NOE, internal->err_ctrl)))); + *ber /= 8; + } + } + break; + case SYS_DVBS2: + if (internal->lock) { + /* Average 5 PER values */ + for (i = 0; i < 5; i++) { + msleep(100); + lsb = stb0899_read_reg(state, STB0899_ECNT1L); + msb = stb0899_read_reg(state, STB0899_ECNT1M); + *ber += MAKEWORD16(msb, lsb); + } + /* ber = ber * 10 ^ 7 */ + *ber *= 10000000; + *ber /= (-1 + (1 << (4 + 2 * STB0899_GETFIELD(NOE, internal->err_ctrl)))); + } + break; + default: + dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system"); + return -EINVAL; + } + + return 0; +} + +static int stb0899_set_voltage(struct dvb_frontend *fe, fe_sec_voltage_t voltage) +{ + struct stb0899_state *state = fe->demodulator_priv; + + switch (voltage) { + case SEC_VOLTAGE_13: + stb0899_write_reg(state, STB0899_GPIO00CFG, 0x82); + stb0899_write_reg(state, STB0899_GPIO01CFG, 0x02); + stb0899_write_reg(state, STB0899_GPIO02CFG, 0x00); + break; + case SEC_VOLTAGE_18: + stb0899_write_reg(state, STB0899_GPIO00CFG, 0x02); + stb0899_write_reg(state, STB0899_GPIO01CFG, 0x02); + stb0899_write_reg(state, STB0899_GPIO02CFG, 0x82); + break; + case SEC_VOLTAGE_OFF: + stb0899_write_reg(state, STB0899_GPIO00CFG, 0x82); + stb0899_write_reg(state, STB0899_GPIO01CFG, 0x82); + stb0899_write_reg(state, STB0899_GPIO02CFG, 0x82); + break; + default: + return -EINVAL; + } + + return 0; +} + +static int stb0899_set_tone(struct dvb_frontend *fe, fe_sec_tone_mode_t tone) +{ + struct stb0899_state *state = fe->demodulator_priv; + struct stb0899_internal *internal = &state->internal; + + u8 div, reg; + + /* wait for diseqc idle */ + if (stb0899_wait_diseqc_txidle(state, 100) < 0) + return -ETIMEDOUT; + + switch (tone) { + case SEC_TONE_ON: + div = (internal->master_clk / 100) / 5632; + div = (div + 5) / 10; + stb0899_write_reg(state, STB0899_DISEQCOCFG, 0x66); + reg = stb0899_read_reg(state, STB0899_ACRPRESC); + STB0899_SETFIELD_VAL(ACRPRESC, reg, 0x03); + stb0899_write_reg(state, STB0899_ACRPRESC, reg); + stb0899_write_reg(state, STB0899_ACRDIV1, div); + break; + case SEC_TONE_OFF: + stb0899_write_reg(state, STB0899_DISEQCOCFG, 0x20); + break; + default: + return -EINVAL; + } + return 0; +} + +int stb0899_i2c_gate_ctrl(struct dvb_frontend *fe, int enable) +{ + int i2c_stat; + struct stb0899_state *state = fe->demodulator_priv; + + i2c_stat = stb0899_read_reg(state, STB0899_I2CRPT); + if (i2c_stat < 0) + goto err; + + if (enable) { + dprintk(state->verbose, FE_DEBUG, 1, "Enabling I2C Repeater ..."); + i2c_stat |= STB0899_I2CTON; + if (stb0899_write_reg(state, STB0899_I2CRPT, i2c_stat) < 0) + goto err; + } else { + dprintk(state->verbose, FE_DEBUG, 1, "Disabling I2C Repeater ..."); + i2c_stat &= ~STB0899_I2CTON; + if (stb0899_write_reg(state, STB0899_I2CRPT, i2c_stat) < 0) + goto err; + } + return 0; +err: + dprintk(state->verbose, FE_ERROR, 1, "I2C Repeater control failed"); + return -EREMOTEIO; +} + + +static inline void CONVERT32(u32 x, char *str) +{ + *str++ = (x >> 24) & 0xff; + *str++ = (x >> 16) & 0xff; + *str++ = (x >> 8) & 0xff; + *str++ = (x >> 0) & 0xff; + *str = '\0'; +} + +int stb0899_get_dev_id(struct stb0899_state *state) +{ + u8 chip_id, release; + u16 id; + u32 demod_ver = 0, fec_ver = 0; + char demod_str[5] = { 0 }; + char fec_str[5] = { 0 }; + + id = stb0899_read_reg(state, STB0899_DEV_ID); + dprintk(state->verbose, FE_DEBUG, 1, "ID reg=[0x%02x]", id); + chip_id = STB0899_GETFIELD(CHIP_ID, id); + release = STB0899_GETFIELD(CHIP_REL, id); + + dprintk(state->verbose, FE_ERROR, 1, "Device ID=[%d], Release=[%d]", + chip_id, release); + + CONVERT32(STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_CORE_ID), (char *)&demod_str); + + demod_ver = STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_VERSION_ID); + dprintk(state->verbose, FE_ERROR, 1, "Demodulator Core ID=[%s], Version=[%d]", (char *) &demod_str, demod_ver); + CONVERT32(STB0899_READ_S2REG(STB0899_S2FEC, FEC_CORE_ID_REG), (char *)&fec_str); + fec_ver = STB0899_READ_S2REG(STB0899_S2FEC, FEC_VER_ID_REG); + if (! (chip_id > 0)) { + dprintk(state->verbose, FE_ERROR, 1, "couldn't find a STB 0899"); + + return -ENODEV; + } + dprintk(state->verbose, FE_ERROR, 1, "FEC Core ID=[%s], Version=[%d]", (char*) &fec_str, fec_ver); + + return 0; +} + +static void stb0899_set_delivery(struct stb0899_state *state) +{ + u8 reg; + u8 stop_clk[2]; + + stop_clk[0] = stb0899_read_reg(state, STB0899_STOPCLK1); + stop_clk[1] = stb0899_read_reg(state, STB0899_STOPCLK2); + + switch (state->delsys) { + case SYS_DVBS: + dprintk(state->verbose, FE_DEBUG, 1, "Delivery System -- DVB-S"); + /* FECM/Viterbi ON */ + reg = stb0899_read_reg(state, STB0899_FECM); + STB0899_SETFIELD_VAL(FECM_RSVD0, reg, 0); + STB0899_SETFIELD_VAL(FECM_VITERBI_ON, reg, 1); + stb0899_write_reg(state, STB0899_FECM, reg); + + stb0899_write_reg(state, STB0899_RSULC, 0xb1); + stb0899_write_reg(state, STB0899_TSULC, 0x40); + stb0899_write_reg(state, STB0899_RSLLC, 0x42); + stb0899_write_reg(state, STB0899_TSLPL, 0x12); + + reg = stb0899_read_reg(state, STB0899_TSTRES); + STB0899_SETFIELD_VAL(FRESLDPC, reg, 1); + stb0899_write_reg(state, STB0899_TSTRES, reg); + + STB0899_SETFIELD_VAL(STOP_CHK8PSK, stop_clk[0], 1); + STB0899_SETFIELD_VAL(STOP_CKFEC108, stop_clk[0], 1); + STB0899_SETFIELD_VAL(STOP_CKFEC216, stop_clk[0], 1); + + STB0899_SETFIELD_VAL(STOP_CKPKDLIN108, stop_clk[1], 1); + STB0899_SETFIELD_VAL(STOP_CKPKDLIN216, stop_clk[1], 1); + + STB0899_SETFIELD_VAL(STOP_CKINTBUF216, stop_clk[0], 1); + STB0899_SETFIELD_VAL(STOP_CKCORE216, stop_clk[0], 0); + + STB0899_SETFIELD_VAL(STOP_CKS2DMD108, stop_clk[1], 1); + break; + case SYS_DVBS2: + /* FECM/Viterbi OFF */ + reg = stb0899_read_reg(state, STB0899_FECM); + STB0899_SETFIELD_VAL(FECM_RSVD0, reg, 0); + STB0899_SETFIELD_VAL(FECM_VITERBI_ON, reg, 0); + stb0899_write_reg(state, STB0899_FECM, reg); + + stb0899_write_reg(state, STB0899_RSULC, 0xb1); + stb0899_write_reg(state, STB0899_TSULC, 0x42); + stb0899_write_reg(state, STB0899_RSLLC, 0x40); + stb0899_write_reg(state, STB0899_TSLPL, 0x02); + + reg = stb0899_read_reg(state, STB0899_TSTRES); + STB0899_SETFIELD_VAL(FRESLDPC, reg, 0); + stb0899_write_reg(state, STB0899_TSTRES, reg); + + STB0899_SETFIELD_VAL(STOP_CHK8PSK, stop_clk[0], 1); + STB0899_SETFIELD_VAL(STOP_CKFEC108, stop_clk[0], 0); + STB0899_SETFIELD_VAL(STOP_CKFEC216, stop_clk[0], 0); + + STB0899_SETFIELD_VAL(STOP_CKPKDLIN108, stop_clk[1], 0); + STB0899_SETFIELD_VAL(STOP_CKPKDLIN216, stop_clk[1], 0); + + STB0899_SETFIELD_VAL(STOP_CKINTBUF216, stop_clk[0], 0); + STB0899_SETFIELD_VAL(STOP_CKCORE216, stop_clk[0], 0); + + STB0899_SETFIELD_VAL(STOP_CKS2DMD108, stop_clk[1], 0); + break; + case SYS_DSS: + /* FECM/Viterbi ON */ + reg = stb0899_read_reg(state, STB0899_FECM); + STB0899_SETFIELD_VAL(FECM_RSVD0, reg, 1); + STB0899_SETFIELD_VAL(FECM_VITERBI_ON, reg, 1); + stb0899_write_reg(state, STB0899_FECM, reg); + + stb0899_write_reg(state, STB0899_RSULC, 0xa1); + stb0899_write_reg(state, STB0899_TSULC, 0x61); + stb0899_write_reg(state, STB0899_RSLLC, 0x42); + + reg = stb0899_read_reg(state, STB0899_TSTRES); + STB0899_SETFIELD_VAL(FRESLDPC, reg, 1); + stb0899_write_reg(state, STB0899_TSTRES, reg); + + STB0899_SETFIELD_VAL(STOP_CHK8PSK, stop_clk[0], 1); + STB0899_SETFIELD_VAL(STOP_CKFEC108, stop_clk[0], 1); + STB0899_SETFIELD_VAL(STOP_CKFEC216, stop_clk[0], 1); + + STB0899_SETFIELD_VAL(STOP_CKPKDLIN108, stop_clk[1], 1); + STB0899_SETFIELD_VAL(STOP_CKPKDLIN216, stop_clk[1], 1); + + STB0899_SETFIELD_VAL(STOP_CKCORE216, stop_clk[0], 0); + + STB0899_SETFIELD_VAL(STOP_CKS2DMD108, stop_clk[1], 1); + break; + default: + dprintk(state->verbose, FE_ERROR, 1, "Unsupported delivery system"); + break; + } + STB0899_SETFIELD_VAL(STOP_CKADCI108, stop_clk[0], 0); + stb0899_write_regs(state, STB0899_STOPCLK1, stop_clk, 2); +} + +/* + * stb0899_set_iterations + * set the LDPC iteration scale function + */ +static void stb0899_set_iterations(struct stb0899_state *state) +{ + struct stb0899_internal *internal = &state->internal; + struct stb0899_config *config = state->config; + + s32 iter_scale; + u32 reg; + + iter_scale = 17 * (internal->master_clk / 1000); + iter_scale += 410000; + iter_scale /= (internal->srate / 1000000); + iter_scale /= 1000; + + if (iter_scale > config->ldpc_max_iter) + iter_scale = config->ldpc_max_iter; + + reg = STB0899_READ_S2REG(STB0899_S2DEMOD, MAX_ITER); + STB0899_SETFIELD_VAL(MAX_ITERATIONS, reg, iter_scale); + stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_MAX_ITER, STB0899_OFF0_MAX_ITER, reg); +} + +static enum dvbfe_search stb0899_search(struct dvb_frontend *fe, struct dvb_frontend_parameters *p) +{ + struct stb0899_state *state = fe->demodulator_priv; + struct stb0899_params *i_params = &state->params; + struct stb0899_internal *internal = &state->internal; + struct stb0899_config *config = state->config; + struct dtv_frontend_properties *props = &fe->dtv_property_cache; + + u32 SearchRange, gain; + + i_params->freq = p->frequency; + i_params->srate = p->u.qpsk.symbol_rate; + state->delsys = props->delivery_system; + dprintk(state->verbose, FE_DEBUG, 1, "delivery system=%d", state->delsys); + + SearchRange = 10000000; + dprintk(state->verbose, FE_DEBUG, 1, "Frequency=%d, Srate=%d", i_params->freq, i_params->srate); + /* checking Search Range is meaningless for a fixed 3 Mhz */ + if (INRANGE(i_params->srate, 1000000, 45000000)) { + dprintk(state->verbose, FE_DEBUG, 1, "Parameters IN RANGE"); + stb0899_set_delivery(state); + + if (state->config->tuner_set_rfsiggain) { + if (internal->srate > 15000000) + gain = 8; /* 15Mb < srate < 45Mb, gain = 8dB */ + else if (internal->srate > 5000000) + gain = 12; /* 5Mb < srate < 15Mb, gain = 12dB */ + else + gain = 14; /* 1Mb < srate < 5Mb, gain = 14db */ + state->config->tuner_set_rfsiggain(fe, gain); + } + + if (i_params->srate <= 5000000) + stb0899_set_mclk(state, config->lo_clk); + else + stb0899_set_mclk(state, config->hi_clk); + + switch (state->delsys) { + case SYS_DVBS: + case SYS_DSS: + dprintk(state->verbose, FE_DEBUG, 1, "DVB-S delivery system"); + internal->freq = i_params->freq; + internal->srate = i_params->srate; + /* + * search = user search range + + * 500Khz + + * 2 * Tuner_step_size + + * 10% of the symbol rate + */ + internal->srch_range = SearchRange + 1500000 + (i_params->srate / 5); + internal->derot_percent = 30; + + /* What to do for tuners having no bandwidth setup ? */ + /* enable tuner I/O */ + stb0899_i2c_gate_ctrl(&state->frontend, 1); + + if (state->config->tuner_set_bandwidth) + state->config->tuner_set_bandwidth(fe, (13 * (stb0899_carr_width(state) + SearchRange)) / 10); + if (state->config->tuner_get_bandwidth) + state->config->tuner_get_bandwidth(fe, &internal->tuner_bw); + + /* disable tuner I/O */ + stb0899_i2c_gate_ctrl(&state->frontend, 0); + + /* Set DVB-S1 AGC */ + stb0899_write_reg(state, STB0899_AGCRFCFG, 0x11); + + /* Run the search algorithm */ + dprintk(state->verbose, FE_DEBUG, 1, "running DVB-S search algo .."); + if (stb0899_dvbs_algo(state) == RANGEOK) { + internal->lock = 1; + dprintk(state->verbose, FE_DEBUG, 1, + "-------------------------------------> DVB-S LOCK !"); + +// stb0899_write_reg(state, STB0899_ERRCTRL1, 0x3d); /* Viterbi Errors */ +// internal->v_status = stb0899_read_reg(state, STB0899_VSTATUS); +// internal->err_ctrl = stb0899_read_reg(state, STB0899_ERRCTRL1); +// dprintk(state->verbose, FE_DEBUG, 1, "VSTATUS=0x%02x", internal->v_status); +// dprintk(state->verbose, FE_DEBUG, 1, "ERR_CTRL=0x%02x", internal->err_ctrl); + + return DVBFE_ALGO_SEARCH_SUCCESS; + } else { + internal->lock = 0; + + return DVBFE_ALGO_SEARCH_FAILED; + } + break; + case SYS_DVBS2: + internal->freq = i_params->freq; + internal->srate = i_params->srate; + internal->srch_range = SearchRange; + + /* enable tuner I/O */ + stb0899_i2c_gate_ctrl(&state->frontend, 1); + + if (state->config->tuner_set_bandwidth) + state->config->tuner_set_bandwidth(fe, (stb0899_carr_width(state) + SearchRange)); + if (state->config->tuner_get_bandwidth) + state->config->tuner_get_bandwidth(fe, &internal->tuner_bw); + + /* disable tuner I/O */ + stb0899_i2c_gate_ctrl(&state->frontend, 0); + +// pParams->SpectralInv = pSearch->IQ_Inversion; + + /* Set DVB-S2 AGC */ + stb0899_write_reg(state, STB0899_AGCRFCFG, 0x1c); + + /* Set IterScale =f(MCLK,SYMB) */ + stb0899_set_iterations(state); + + /* Run the search algorithm */ + dprintk(state->verbose, FE_DEBUG, 1, "running DVB-S2 search algo .."); + if (stb0899_dvbs2_algo(state) == DVBS2_FEC_LOCK) { + internal->lock = 1; + dprintk(state->verbose, FE_DEBUG, 1, + "-------------------------------------> DVB-S2 LOCK !"); + +// stb0899_write_reg(state, STB0899_ERRCTRL1, 0xb6); /* Packet Errors */ +// internal->v_status = stb0899_read_reg(state, STB0899_VSTATUS); +// internal->err_ctrl = stb0899_read_reg(state, STB0899_ERRCTRL1); + + return DVBFE_ALGO_SEARCH_SUCCESS; + } else { + internal->lock = 0; + + return DVBFE_ALGO_SEARCH_FAILED; + } + break; + default: + dprintk(state->verbose, FE_ERROR, 1, "Unsupported delivery system"); + return DVBFE_ALGO_SEARCH_INVALID; + } + } + + return DVBFE_ALGO_SEARCH_ERROR; +} +/* + * stb0899_track + * periodically check the signal level against a specified + * threshold level and perform derotator centering. + * called once we have a lock from a succesful search + * event. + * + * Will be called periodically called to maintain the + * lock. + * + * Will be used to get parameters as well as info from + * the decoded baseband header + * + * Once a new lock has established, the internal state + * frequency (internal->freq) is updated + */ +static int stb0899_track(struct dvb_frontend *fe, struct dvb_frontend_parameters *p) +{ + return 0; +} + +static int stb0899_get_frontend(struct dvb_frontend *fe, struct dvb_frontend_parameters *p) +{ + struct stb0899_state *state = fe->demodulator_priv; + struct stb0899_internal *internal = &state->internal; + + dprintk(state->verbose, FE_DEBUG, 1, "Get params"); + p->u.qpsk.symbol_rate = internal->srate; + + return 0; +} + +static enum dvbfe_algo stb0899_frontend_algo(struct dvb_frontend *fe) +{ + return DVBFE_ALGO_CUSTOM; +} + +static struct dvb_frontend_ops stb0899_ops = { + + .info = { + .name = "STB0899 Multistandard", + .type = FE_QPSK, + .frequency_min = 950000, + .frequency_max = 2150000, + .frequency_stepsize = 0, + .frequency_tolerance = 0, + .symbol_rate_min = 5000000, + .symbol_rate_max = 45000000, + + .caps = FE_CAN_INVERSION_AUTO | + FE_CAN_FEC_AUTO | + FE_CAN_QPSK + }, + + .release = stb0899_release, + .init = stb0899_init, + .sleep = stb0899_sleep, +// .wakeup = stb0899_wakeup, + + .i2c_gate_ctrl = stb0899_i2c_gate_ctrl, + + .get_frontend_algo = stb0899_frontend_algo, + .search = stb0899_search, + .track = stb0899_track, + .get_frontend = stb0899_get_frontend, + + + .read_status = stb0899_read_status, + .read_snr = stb0899_read_snr, + .read_signal_strength = stb0899_read_signal_strength, + .read_ber = stb0899_read_ber, + + .set_voltage = stb0899_set_voltage, + .set_tone = stb0899_set_tone, + + .diseqc_send_master_cmd = stb0899_send_diseqc_msg, + .diseqc_recv_slave_reply = stb0899_recv_slave_reply, + .diseqc_send_burst = stb0899_send_diseqc_burst, +}; + +struct dvb_frontend *stb0899_attach(struct stb0899_config *config, struct i2c_adapter *i2c) +{ + struct stb0899_state *state = NULL; + enum stb0899_inversion inversion; + + state = kzalloc(sizeof (struct stb0899_state), GFP_KERNEL); + if (state == NULL) + goto error; + + inversion = config->inversion; + state->verbose = &verbose; + state->config = config; + state->i2c = i2c; + state->frontend.ops = stb0899_ops; + state->frontend.demodulator_priv = state; + state->internal.inversion = inversion; + + stb0899_wakeup(&state->frontend); + if (stb0899_get_dev_id(state) == -ENODEV) { + printk("%s: Exiting .. !\n", __func__); + goto error; + } + + printk("%s: Attaching STB0899 \n", __func__); + return &state->frontend; + +error: + kfree(state); + return NULL; +} +EXPORT_SYMBOL(stb0899_attach); +MODULE_PARM_DESC(verbose, "Set Verbosity level"); +MODULE_AUTHOR("Manu Abraham"); +MODULE_DESCRIPTION("STB0899 Multi-Std frontend"); +MODULE_LICENSE("GPL"); |
