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606 lines
13 KiB
606 lines
13 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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Driver for ST STV0288 demodulator |
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Copyright (C) 2006 Georg Acher, BayCom GmbH, acher (at) baycom (dot) de |
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for Reel Multimedia |
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Copyright (C) 2008 TurboSight.com, Bob Liu <[email protected]> |
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Copyright (C) 2008 Igor M. Liplianin <[email protected]> |
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Removed stb6000 specific tuner code and revised some |
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procedures. |
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2010-09-01 Josef Pavlik <[email protected]> |
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Fixed diseqc_msg, diseqc_burst and set_tone problems |
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*/ |
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#include <linux/init.h> |
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#include <linux/kernel.h> |
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#include <linux/module.h> |
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#include <linux/string.h> |
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#include <linux/slab.h> |
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#include <linux/jiffies.h> |
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#include <asm/div64.h> |
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#include <media/dvb_frontend.h> |
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#include "stv0288.h" |
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struct stv0288_state { |
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struct i2c_adapter *i2c; |
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const struct stv0288_config *config; |
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struct dvb_frontend frontend; |
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u8 initialised:1; |
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u32 tuner_frequency; |
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u32 symbol_rate; |
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enum fe_code_rate fec_inner; |
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int errmode; |
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}; |
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#define STATUS_BER 0 |
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#define STATUS_UCBLOCKS 1 |
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static int debug; |
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static int debug_legacy_dish_switch; |
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#define dprintk(args...) \ |
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do { \ |
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if (debug) \ |
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printk(KERN_DEBUG "stv0288: " args); \ |
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} while (0) |
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static int stv0288_writeregI(struct stv0288_state *state, u8 reg, u8 data) |
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{ |
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int ret; |
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u8 buf[] = { reg, data }; |
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struct i2c_msg msg = { |
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.addr = state->config->demod_address, |
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.flags = 0, |
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.buf = buf, |
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.len = 2 |
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}; |
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ret = i2c_transfer(state->i2c, &msg, 1); |
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if (ret != 1) |
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dprintk("%s: writereg error (reg == 0x%02x, val == 0x%02x, ret == %i)\n", |
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__func__, reg, data, ret); |
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return (ret != 1) ? -EREMOTEIO : 0; |
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} |
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static int stv0288_write(struct dvb_frontend *fe, const u8 buf[], int len) |
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{ |
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struct stv0288_state *state = fe->demodulator_priv; |
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if (len != 2) |
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return -EINVAL; |
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return stv0288_writeregI(state, buf[0], buf[1]); |
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} |
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static u8 stv0288_readreg(struct stv0288_state *state, u8 reg) |
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{ |
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int ret; |
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u8 b0[] = { reg }; |
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u8 b1[] = { 0 }; |
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struct i2c_msg msg[] = { |
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{ |
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.addr = state->config->demod_address, |
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.flags = 0, |
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.buf = b0, |
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.len = 1 |
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}, { |
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.addr = state->config->demod_address, |
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.flags = I2C_M_RD, |
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.buf = b1, |
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.len = 1 |
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} |
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}; |
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ret = i2c_transfer(state->i2c, msg, 2); |
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if (ret != 2) |
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dprintk("%s: readreg error (reg == 0x%02x, ret == %i)\n", |
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__func__, reg, ret); |
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return b1[0]; |
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} |
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static int stv0288_set_symbolrate(struct dvb_frontend *fe, u32 srate) |
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{ |
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struct stv0288_state *state = fe->demodulator_priv; |
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unsigned int temp; |
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unsigned char b[3]; |
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if ((srate < 1000000) || (srate > 45000000)) |
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return -EINVAL; |
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stv0288_writeregI(state, 0x22, 0); |
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stv0288_writeregI(state, 0x23, 0); |
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stv0288_writeregI(state, 0x2b, 0xff); |
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stv0288_writeregI(state, 0x2c, 0xf7); |
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temp = (unsigned int)srate / 1000; |
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temp = temp * 32768; |
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temp = temp / 25; |
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temp = temp / 125; |
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b[0] = (unsigned char)((temp >> 12) & 0xff); |
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b[1] = (unsigned char)((temp >> 4) & 0xff); |
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b[2] = (unsigned char)((temp << 4) & 0xf0); |
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stv0288_writeregI(state, 0x28, 0x80); /* SFRH */ |
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stv0288_writeregI(state, 0x29, 0); /* SFRM */ |
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stv0288_writeregI(state, 0x2a, 0); /* SFRL */ |
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stv0288_writeregI(state, 0x28, b[0]); |
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stv0288_writeregI(state, 0x29, b[1]); |
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stv0288_writeregI(state, 0x2a, b[2]); |
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dprintk("stv0288: stv0288_set_symbolrate\n"); |
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return 0; |
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} |
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static int stv0288_send_diseqc_msg(struct dvb_frontend *fe, |
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struct dvb_diseqc_master_cmd *m) |
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{ |
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struct stv0288_state *state = fe->demodulator_priv; |
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int i; |
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dprintk("%s\n", __func__); |
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stv0288_writeregI(state, 0x09, 0); |
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msleep(30); |
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stv0288_writeregI(state, 0x05, 0x12);/* modulated mode, single shot */ |
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for (i = 0; i < m->msg_len; i++) { |
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if (stv0288_writeregI(state, 0x06, m->msg[i])) |
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return -EREMOTEIO; |
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} |
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msleep(m->msg_len*12); |
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return 0; |
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} |
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static int stv0288_send_diseqc_burst(struct dvb_frontend *fe, |
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enum fe_sec_mini_cmd burst) |
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{ |
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struct stv0288_state *state = fe->demodulator_priv; |
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dprintk("%s\n", __func__); |
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if (stv0288_writeregI(state, 0x05, 0x03))/* burst mode, single shot */ |
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return -EREMOTEIO; |
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if (stv0288_writeregI(state, 0x06, burst == SEC_MINI_A ? 0x00 : 0xff)) |
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return -EREMOTEIO; |
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msleep(15); |
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if (stv0288_writeregI(state, 0x05, 0x12)) |
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return -EREMOTEIO; |
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return 0; |
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} |
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static int stv0288_set_tone(struct dvb_frontend *fe, enum fe_sec_tone_mode tone) |
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{ |
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struct stv0288_state *state = fe->demodulator_priv; |
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switch (tone) { |
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case SEC_TONE_ON: |
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if (stv0288_writeregI(state, 0x05, 0x10))/* cont carrier */ |
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return -EREMOTEIO; |
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break; |
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case SEC_TONE_OFF: |
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if (stv0288_writeregI(state, 0x05, 0x12))/* burst mode off*/ |
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return -EREMOTEIO; |
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break; |
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default: |
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return -EINVAL; |
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} |
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return 0; |
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} |
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static u8 stv0288_inittab[] = { |
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0x01, 0x15, |
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0x02, 0x20, |
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0x09, 0x0, |
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0x0a, 0x4, |
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0x0b, 0x0, |
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0x0c, 0x0, |
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0x0d, 0x0, |
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0x0e, 0xd4, |
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0x0f, 0x30, |
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0x11, 0x80, |
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0x12, 0x03, |
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0x13, 0x48, |
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0x14, 0x84, |
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0x15, 0x45, |
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0x16, 0xb7, |
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0x17, 0x9c, |
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0x18, 0x0, |
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0x19, 0xa6, |
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0x1a, 0x88, |
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0x1b, 0x8f, |
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0x1c, 0xf0, |
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0x20, 0x0b, |
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0x21, 0x54, |
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0x22, 0x0, |
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0x23, 0x0, |
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0x2b, 0xff, |
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0x2c, 0xf7, |
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0x30, 0x0, |
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0x31, 0x1e, |
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0x32, 0x14, |
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0x33, 0x0f, |
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0x34, 0x09, |
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0x35, 0x0c, |
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0x36, 0x05, |
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0x37, 0x2f, |
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0x38, 0x16, |
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0x39, 0xbe, |
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0x3a, 0x0, |
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0x3b, 0x13, |
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0x3c, 0x11, |
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0x3d, 0x30, |
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0x40, 0x63, |
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0x41, 0x04, |
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0x42, 0x20, |
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0x43, 0x00, |
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0x44, 0x00, |
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0x45, 0x00, |
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0x46, 0x00, |
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0x47, 0x00, |
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0x4a, 0x00, |
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0x50, 0x10, |
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0x51, 0x38, |
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0x52, 0x21, |
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0x58, 0x54, |
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0x59, 0x86, |
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0x5a, 0x0, |
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0x5b, 0x9b, |
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0x5c, 0x08, |
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0x5d, 0x7f, |
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0x5e, 0x0, |
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0x5f, 0xff, |
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0x70, 0x0, |
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0x71, 0x0, |
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0x72, 0x0, |
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0x74, 0x0, |
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0x75, 0x0, |
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0x76, 0x0, |
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0x81, 0x0, |
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0x82, 0x3f, |
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0x83, 0x3f, |
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0x84, 0x0, |
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0x85, 0x0, |
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0x88, 0x0, |
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0x89, 0x0, |
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0x8a, 0x0, |
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0x8b, 0x0, |
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0x8c, 0x0, |
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0x90, 0x0, |
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0x91, 0x0, |
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0x92, 0x0, |
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0x93, 0x0, |
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0x94, 0x1c, |
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0x97, 0x0, |
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0xa0, 0x48, |
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0xa1, 0x0, |
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0xb0, 0xb8, |
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0xb1, 0x3a, |
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0xb2, 0x10, |
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0xb3, 0x82, |
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0xb4, 0x80, |
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0xb5, 0x82, |
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0xb6, 0x82, |
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0xb7, 0x82, |
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0xb8, 0x20, |
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0xb9, 0x0, |
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0xf0, 0x0, |
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0xf1, 0x0, |
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0xf2, 0xc0, |
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0x51, 0x36, |
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0x52, 0x09, |
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0x53, 0x94, |
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0x54, 0x62, |
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0x55, 0x29, |
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0x56, 0x64, |
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0x57, 0x2b, |
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0xff, 0xff, |
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}; |
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static int stv0288_set_voltage(struct dvb_frontend *fe, |
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enum fe_sec_voltage volt) |
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{ |
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dprintk("%s: %s\n", __func__, |
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volt == SEC_VOLTAGE_13 ? "SEC_VOLTAGE_13" : |
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volt == SEC_VOLTAGE_18 ? "SEC_VOLTAGE_18" : "??"); |
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return 0; |
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} |
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static int stv0288_init(struct dvb_frontend *fe) |
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{ |
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struct stv0288_state *state = fe->demodulator_priv; |
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int i; |
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u8 reg; |
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u8 val; |
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dprintk("stv0288: init chip\n"); |
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stv0288_writeregI(state, 0x41, 0x04); |
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msleep(50); |
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/* we have default inittab */ |
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if (state->config->inittab == NULL) { |
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for (i = 0; !(stv0288_inittab[i] == 0xff && |
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stv0288_inittab[i + 1] == 0xff); i += 2) |
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stv0288_writeregI(state, stv0288_inittab[i], |
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stv0288_inittab[i + 1]); |
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} else { |
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for (i = 0; ; i += 2) { |
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reg = state->config->inittab[i]; |
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val = state->config->inittab[i+1]; |
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if (reg == 0xff && val == 0xff) |
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break; |
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stv0288_writeregI(state, reg, val); |
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} |
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} |
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return 0; |
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} |
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static int stv0288_read_status(struct dvb_frontend *fe, enum fe_status *status) |
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{ |
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struct stv0288_state *state = fe->demodulator_priv; |
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u8 sync = stv0288_readreg(state, 0x24); |
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if (sync == 255) |
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sync = 0; |
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dprintk("%s : FE_READ_STATUS : VSTATUS: 0x%02x\n", __func__, sync); |
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*status = 0; |
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if (sync & 0x80) |
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*status |= FE_HAS_CARRIER | FE_HAS_SIGNAL; |
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if (sync & 0x10) |
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*status |= FE_HAS_VITERBI; |
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if (sync & 0x08) { |
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*status |= FE_HAS_LOCK; |
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dprintk("stv0288 has locked\n"); |
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} |
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return 0; |
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} |
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static int stv0288_read_ber(struct dvb_frontend *fe, u32 *ber) |
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{ |
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struct stv0288_state *state = fe->demodulator_priv; |
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if (state->errmode != STATUS_BER) |
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return 0; |
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*ber = (stv0288_readreg(state, 0x26) << 8) | |
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stv0288_readreg(state, 0x27); |
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dprintk("stv0288_read_ber %d\n", *ber); |
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return 0; |
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} |
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static int stv0288_read_signal_strength(struct dvb_frontend *fe, u16 *strength) |
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{ |
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struct stv0288_state *state = fe->demodulator_priv; |
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s32 signal = 0xffff - ((stv0288_readreg(state, 0x10) << 8)); |
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signal = signal * 5 / 4; |
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*strength = (signal > 0xffff) ? 0xffff : (signal < 0) ? 0 : signal; |
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dprintk("stv0288_read_signal_strength %d\n", *strength); |
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return 0; |
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} |
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static int stv0288_sleep(struct dvb_frontend *fe) |
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{ |
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struct stv0288_state *state = fe->demodulator_priv; |
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stv0288_writeregI(state, 0x41, 0x84); |
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state->initialised = 0; |
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return 0; |
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} |
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static int stv0288_read_snr(struct dvb_frontend *fe, u16 *snr) |
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{ |
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struct stv0288_state *state = fe->demodulator_priv; |
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s32 xsnr = 0xffff - ((stv0288_readreg(state, 0x2d) << 8) |
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| stv0288_readreg(state, 0x2e)); |
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xsnr = 3 * (xsnr - 0xa100); |
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*snr = (xsnr > 0xffff) ? 0xffff : (xsnr < 0) ? 0 : xsnr; |
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dprintk("stv0288_read_snr %d\n", *snr); |
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return 0; |
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} |
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static int stv0288_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) |
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{ |
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struct stv0288_state *state = fe->demodulator_priv; |
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if (state->errmode != STATUS_BER) |
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return 0; |
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*ucblocks = (stv0288_readreg(state, 0x26) << 8) | |
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stv0288_readreg(state, 0x27); |
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dprintk("stv0288_read_ber %d\n", *ucblocks); |
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return 0; |
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} |
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static int stv0288_set_frontend(struct dvb_frontend *fe) |
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{ |
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struct stv0288_state *state = fe->demodulator_priv; |
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struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
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char tm; |
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unsigned char tda[3]; |
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u8 reg, time_out = 0; |
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dprintk("%s : FE_SET_FRONTEND\n", __func__); |
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if (c->delivery_system != SYS_DVBS) { |
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dprintk("%s: unsupported delivery system selected (%d)\n", |
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__func__, c->delivery_system); |
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return -EOPNOTSUPP; |
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} |
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if (state->config->set_ts_params) |
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state->config->set_ts_params(fe, 0); |
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/* only frequency & symbol_rate are used for tuner*/ |
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if (fe->ops.tuner_ops.set_params) { |
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fe->ops.tuner_ops.set_params(fe); |
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if (fe->ops.i2c_gate_ctrl) |
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fe->ops.i2c_gate_ctrl(fe, 0); |
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} |
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udelay(10); |
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stv0288_set_symbolrate(fe, c->symbol_rate); |
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/* Carrier lock control register */ |
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stv0288_writeregI(state, 0x15, 0xc5); |
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tda[2] = 0x0; /* CFRL */ |
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for (tm = -9; tm < 7;) { |
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/* Viterbi status */ |
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reg = stv0288_readreg(state, 0x24); |
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if (reg & 0x8) |
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break; |
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if (reg & 0x80) { |
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time_out++; |
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if (time_out > 10) |
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break; |
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tda[2] += 40; |
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if (tda[2] < 40) |
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tm++; |
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} else { |
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tm++; |
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tda[2] = 0; |
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time_out = 0; |
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} |
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tda[1] = (unsigned char)tm; |
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stv0288_writeregI(state, 0x2b, tda[1]); |
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stv0288_writeregI(state, 0x2c, tda[2]); |
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msleep(30); |
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} |
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state->tuner_frequency = c->frequency; |
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state->fec_inner = FEC_AUTO; |
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state->symbol_rate = c->symbol_rate; |
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return 0; |
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} |
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static int stv0288_i2c_gate_ctrl(struct dvb_frontend *fe, int enable) |
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{ |
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struct stv0288_state *state = fe->demodulator_priv; |
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if (enable) |
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stv0288_writeregI(state, 0x01, 0xb5); |
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else |
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stv0288_writeregI(state, 0x01, 0x35); |
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udelay(1); |
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return 0; |
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} |
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static void stv0288_release(struct dvb_frontend *fe) |
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{ |
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struct stv0288_state *state = fe->demodulator_priv; |
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kfree(state); |
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} |
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static const struct dvb_frontend_ops stv0288_ops = { |
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.delsys = { SYS_DVBS }, |
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.info = { |
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.name = "ST STV0288 DVB-S", |
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.frequency_min_hz = 950 * MHz, |
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.frequency_max_hz = 2150 * MHz, |
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.frequency_stepsize_hz = 1 * MHz, |
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.symbol_rate_min = 1000000, |
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.symbol_rate_max = 45000000, |
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.symbol_rate_tolerance = 500, /* ppm */ |
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.caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | |
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FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | |
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FE_CAN_QPSK | |
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FE_CAN_FEC_AUTO |
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}, |
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.release = stv0288_release, |
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.init = stv0288_init, |
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.sleep = stv0288_sleep, |
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.write = stv0288_write, |
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.i2c_gate_ctrl = stv0288_i2c_gate_ctrl, |
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.read_status = stv0288_read_status, |
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.read_ber = stv0288_read_ber, |
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.read_signal_strength = stv0288_read_signal_strength, |
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.read_snr = stv0288_read_snr, |
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.read_ucblocks = stv0288_read_ucblocks, |
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.diseqc_send_master_cmd = stv0288_send_diseqc_msg, |
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.diseqc_send_burst = stv0288_send_diseqc_burst, |
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.set_tone = stv0288_set_tone, |
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.set_voltage = stv0288_set_voltage, |
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|
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.set_frontend = stv0288_set_frontend, |
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}; |
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|
struct dvb_frontend *stv0288_attach(const struct stv0288_config *config, |
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struct i2c_adapter *i2c) |
|
{ |
|
struct stv0288_state *state = NULL; |
|
int id; |
|
|
|
/* allocate memory for the internal state */ |
|
state = kzalloc(sizeof(struct stv0288_state), GFP_KERNEL); |
|
if (state == NULL) |
|
goto error; |
|
|
|
/* setup the state */ |
|
state->config = config; |
|
state->i2c = i2c; |
|
state->initialised = 0; |
|
state->tuner_frequency = 0; |
|
state->symbol_rate = 0; |
|
state->fec_inner = 0; |
|
state->errmode = STATUS_BER; |
|
|
|
stv0288_writeregI(state, 0x41, 0x04); |
|
msleep(200); |
|
id = stv0288_readreg(state, 0x00); |
|
dprintk("stv0288 id %x\n", id); |
|
|
|
/* register 0x00 contains 0x11 for STV0288 */ |
|
if (id != 0x11) |
|
goto error; |
|
|
|
/* create dvb_frontend */ |
|
memcpy(&state->frontend.ops, &stv0288_ops, |
|
sizeof(struct dvb_frontend_ops)); |
|
state->frontend.demodulator_priv = state; |
|
return &state->frontend; |
|
|
|
error: |
|
kfree(state); |
|
|
|
return NULL; |
|
} |
|
EXPORT_SYMBOL(stv0288_attach); |
|
|
|
module_param(debug_legacy_dish_switch, int, 0444); |
|
MODULE_PARM_DESC(debug_legacy_dish_switch, |
|
"Enable timing analysis for Dish Network legacy switches"); |
|
|
|
module_param(debug, int, 0644); |
|
MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off)."); |
|
|
|
MODULE_DESCRIPTION("ST STV0288 DVB Demodulator driver"); |
|
MODULE_AUTHOR("Georg Acher, Bob Liu, Igor liplianin"); |
|
MODULE_LICENSE("GPL"); |
|
|
|
|