cregit-Linux how code gets into the kernel

Release 4.7 drivers/media/dvb-frontends/stv0288.c

/*
        Driver for ST STV0288 demodulator
        Copyright (C) 2006 Georg Acher, BayCom GmbH, acher (at) baycom (dot) de
                for Reel Multimedia
        Copyright (C) 2008 TurboSight.com, Bob Liu <bob@turbosight.com>
        Copyright (C) 2008 Igor M. Liplianin <liplianin@me.by>
                Removed stb6000 specific tuner code and revised some
                procedures.
        2010-09-01 Josef Pavlik <josef@pavlik.it>
                Fixed diseqc_msg, diseqc_burst and set_tone problems

        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/slab.h>
#include <linux/jiffies.h>
#include <asm/div64.h>

#include "dvb_frontend.h"
#include "stv0288.h"


struct stv0288_state {
	
struct i2c_adapter *i2c;
	
const struct stv0288_config *config;
	
struct dvb_frontend frontend;

	
u8 initialised:1;
	
u32 tuner_frequency;
	
u32 symbol_rate;
	
enum fe_code_rate fec_inner;
	
int errmode;
};


#define STATUS_BER 0

#define STATUS_UCBLOCKS 1


static int debug;

static int debug_legacy_dish_switch;

#define dprintk(args...) \
	do { \
                if (debug) \
                        printk(KERN_DEBUG "stv0288: " args); \
        } while (0)



static int stv0288_writeregI(struct stv0288_state *state, u8 reg, u8 data) { int ret; u8 buf[] = { reg, data }; struct i2c_msg msg = { .addr = state->config->demod_address, .flags = 0, .buf = buf, .len = 2 }; ret = i2c_transfer(state->i2c, &msg, 1); if (ret != 1) dprintk("%s: writereg error (reg == 0x%02x, val == 0x%02x, " "ret == %i)\n", __func__, reg, data, ret); return (ret != 1) ? -EREMOTEIO : 0; }

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igor m. liplianinigor m. liplianin106100.00%1100.00%
Total106100.00%1100.00%


static int stv0288_write(struct dvb_frontend *fe, const u8 buf[], int len) { struct stv0288_state *state = fe->demodulator_priv; if (len != 2) return -EINVAL; return stv0288_writeregI(state, buf[0], buf[1]); }

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igor m. liplianinigor m. liplianin5296.30%150.00%
lawrence rustlawrence rust23.70%150.00%
Total54100.00%2100.00%


static u8 stv0288_readreg(struct stv0288_state *state, u8 reg) { int ret; u8 b0[] = { reg }; u8 b1[] = { 0 }; struct i2c_msg msg[] = { { .addr = state->config->demod_address, .flags = 0, .buf = b0, .len = 1 }, { .addr = state->config->demod_address, .flags = I2C_M_RD, .buf = b1, .len = 1 } }; ret = i2c_transfer(state->i2c, msg, 2); if (ret != 2) dprintk("%s: readreg error (reg == 0x%02x, ret == %i)\n", __func__, reg, ret); return b1[0]; }

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igor m. liplianinigor m. liplianin128100.00%1100.00%
Total128100.00%1100.00%


static int stv0288_set_symbolrate(struct dvb_frontend *fe, u32 srate) { struct stv0288_state *state = fe->demodulator_priv; unsigned int temp; unsigned char b[3]; if ((srate < 1000000) || (srate > 45000000)) return -EINVAL; stv0288_writeregI(state, 0x22, 0); stv0288_writeregI(state, 0x23, 0); stv0288_writeregI(state, 0x2b, 0xff); stv0288_writeregI(state, 0x2c, 0xf7); temp = (unsigned int)srate / 1000; temp = temp * 32768; temp = temp / 25; temp = temp / 125; b[0] = (unsigned char)((temp >> 12) & 0xff); b[1] = (unsigned char)((temp >> 4) & 0xff); b[2] = (unsigned char)((temp << 4) & 0xf0); stv0288_writeregI(state, 0x28, 0x80); /* SFRH */ stv0288_writeregI(state, 0x29, 0); /* SFRM */ stv0288_writeregI(state, 0x2a, 0); /* SFRL */ stv0288_writeregI(state, 0x28, b[0]); stv0288_writeregI(state, 0x29, b[1]); stv0288_writeregI(state, 0x2a, b[2]); dprintk("stv0288: stv0288_set_symbolrate\n"); return 0; }

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igor m. liplianinigor m. liplianin21185.43%150.00%
malcolm priestleymalcolm priestley3614.57%150.00%
Total247100.00%2100.00%


static int stv0288_send_diseqc_msg(struct dvb_frontend *fe, struct dvb_diseqc_master_cmd *m) { struct stv0288_state *state = fe->demodulator_priv; int i; dprintk("%s\n", __func__); stv0288_writeregI(state, 0x09, 0); msleep(30); stv0288_writeregI(state, 0x05, 0x12);/* modulated mode, single shot */ for (i = 0; i < m->msg_len; i++) { if (stv0288_writeregI(state, 0x06, m->msg[i])) return -EREMOTEIO; } msleep(m->msg_len*12); return 0; }

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igor m. liplianinigor m. liplianin10193.52%150.00%
malcolm priestleymalcolm priestley76.48%150.00%
Total108100.00%2100.00%


static int stv0288_send_diseqc_burst(struct dvb_frontend *fe, enum fe_sec_mini_cmd burst) { struct stv0288_state *state = fe->demodulator_priv; dprintk("%s\n", __func__); if (stv0288_writeregI(state, 0x05, 0x03))/* burst mode, single shot */ return -EREMOTEIO; if (stv0288_writeregI(state, 0x06, burst == SEC_MINI_A ? 0x00 : 0xff)) return -EREMOTEIO; msleep(15); if (stv0288_writeregI(state, 0x05, 0x12)) return -EREMOTEIO; return 0; }

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igor m. liplianinigor m. liplianin8189.01%133.33%
malcolm priestleymalcolm priestley88.79%133.33%
mauro carvalho chehabmauro carvalho chehab22.20%133.33%
Total91100.00%3100.00%


static int stv0288_set_tone(struct dvb_frontend *fe, enum fe_sec_tone_mode tone) { struct stv0288_state *state = fe->demodulator_priv; switch (tone) { case SEC_TONE_ON: if (stv0288_writeregI(state, 0x05, 0x10))/* cont carrier */ return -EREMOTEIO; break; case SEC_TONE_OFF: if (stv0288_writeregI(state, 0x05, 0x12))/* burst mode off*/ return -EREMOTEIO; break; default: return -EINVAL; } return 0; }

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igor m. liplianinigor m. liplianin6887.18%133.33%
malcolm priestleymalcolm priestley810.26%133.33%
mauro carvalho chehabmauro carvalho chehab22.56%133.33%
Total78100.00%3100.00%

static u8 stv0288_inittab[] = { 0x01, 0x15, 0x02, 0x20, 0x09, 0x0, 0x0a, 0x4, 0x0b, 0x0, 0x0c, 0x0, 0x0d, 0x0, 0x0e, 0xd4, 0x0f, 0x30, 0x11, 0x80, 0x12, 0x03, 0x13, 0x48, 0x14, 0x84, 0x15, 0x45, 0x16, 0xb7, 0x17, 0x9c, 0x18, 0x0, 0x19, 0xa6, 0x1a, 0x88, 0x1b, 0x8f, 0x1c, 0xf0, 0x20, 0x0b, 0x21, 0x54, 0x22, 0x0, 0x23, 0x0, 0x2b, 0xff, 0x2c, 0xf7, 0x30, 0x0, 0x31, 0x1e, 0x32, 0x14, 0x33, 0x0f, 0x34, 0x09, 0x35, 0x0c, 0x36, 0x05, 0x37, 0x2f, 0x38, 0x16, 0x39, 0xbe, 0x3a, 0x0, 0x3b, 0x13, 0x3c, 0x11, 0x3d, 0x30, 0x40, 0x63, 0x41, 0x04, 0x42, 0x20, 0x43, 0x00, 0x44, 0x00, 0x45, 0x00, 0x46, 0x00, 0x47, 0x00, 0x4a, 0x00, 0x50, 0x10, 0x51, 0x38, 0x52, 0x21, 0x58, 0x54, 0x59, 0x86, 0x5a, 0x0, 0x5b, 0x9b, 0x5c, 0x08, 0x5d, 0x7f, 0x5e, 0x0, 0x5f, 0xff, 0x70, 0x0, 0x71, 0x0, 0x72, 0x0, 0x74, 0x0, 0x75, 0x0, 0x76, 0x0, 0x81, 0x0, 0x82, 0x3f, 0x83, 0x3f, 0x84, 0x0, 0x85, 0x0, 0x88, 0x0, 0x89, 0x0, 0x8a, 0x0, 0x8b, 0x0, 0x8c, 0x0, 0x90, 0x0, 0x91, 0x0, 0x92, 0x0, 0x93, 0x0, 0x94, 0x1c, 0x97, 0x0, 0xa0, 0x48, 0xa1, 0x0, 0xb0, 0xb8, 0xb1, 0x3a, 0xb2, 0x10, 0xb3, 0x82, 0xb4, 0x80, 0xb5, 0x82, 0xb6, 0x82, 0xb7, 0x82, 0xb8, 0x20, 0xb9, 0x0, 0xf0, 0x0, 0xf1, 0x0, 0xf2, 0xc0, 0x51, 0x36, 0x52, 0x09, 0x53, 0x94, 0x54, 0x62, 0x55, 0x29, 0x56, 0x64, 0x57, 0x2b, 0xff, 0xff, };
static int stv0288_set_voltage(struct dvb_frontend *fe, enum fe_sec_voltage volt) { dprintk("%s: %s\n", __func__, volt == SEC_VOLTAGE_13 ? "SEC_VOLTAGE_13" : volt == SEC_VOLTAGE_18 ? "SEC_VOLTAGE_18" : "??"); return 0; }

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igor m. liplianinigor m. liplianin3794.87%150.00%
mauro carvalho chehabmauro carvalho chehab25.13%150.00%
Total39100.00%2100.00%


static int stv0288_init(struct dvb_frontend *fe) { struct stv0288_state *state = fe->demodulator_priv; int i; u8 reg; u8 val; dprintk("stv0288: init chip\n"); stv0288_writeregI(state, 0x41, 0x04); msleep(50); /* we have default inittab */ if (state->config->inittab == NULL) { for (i = 0; !(stv0288_inittab[i] == 0xff && stv0288_inittab[i + 1] == 0xff); i += 2) stv0288_writeregI(state, stv0288_inittab[i], stv0288_inittab[i + 1]); } else { for (i = 0; ; i += 2) { reg = state->config->inittab[i]; val = state->config->inittab[i+1]; if (reg == 0xff && val == 0xff) break; stv0288_writeregI(state, reg, val); } } return 0; }

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igor m. liplianinigor m. liplianin170100.00%2100.00%
Total170100.00%2100.00%


static int stv0288_read_status(struct dvb_frontend *fe, enum fe_status *status) { struct stv0288_state *state = fe->demodulator_priv; u8 sync = stv0288_readreg(state, 0x24); if (sync == 255) sync = 0; dprintk("%s : FE_READ_STATUS : VSTATUS: 0x%02x\n", __func__, sync); *status = 0; if (sync & 0x80) *status |= FE_HAS_CARRIER | FE_HAS_SIGNAL; if (sync & 0x10) *status |= FE_HAS_VITERBI; if (sync & 0x08) { *status |= FE_HAS_LOCK; dprintk("stv0288 has locked\n"); } return 0; }

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igor m. liplianinigor m. liplianin7875.00%133.33%
malcolm priestleymalcolm priestley2423.08%133.33%
mauro carvalho chehabmauro carvalho chehab21.92%133.33%
Total104100.00%3100.00%


static int stv0288_read_ber(struct dvb_frontend *fe, u32 *ber) { struct stv0288_state *state = fe->demodulator_priv; if (state->errmode != STATUS_BER) return 0; *ber = (stv0288_readreg(state, 0x26) << 8) | stv0288_readreg(state, 0x27); dprintk("stv0288_read_ber %d\n", *ber); return 0; }

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igor m. liplianinigor m. liplianin67100.00%1100.00%
Total67100.00%1100.00%


static int stv0288_read_signal_strength(struct dvb_frontend *fe, u16 *strength) { struct stv0288_state *state = fe->demodulator_priv; s32 signal = 0xffff - ((stv0288_readreg(state, 0x10) << 8)); signal = signal * 5 / 4; *strength = (signal > 0xffff) ? 0xffff : (signal < 0) ? 0 : signal; dprintk("stv0288_read_signal_strength %d\n", *strength); return 0; }

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igor m. liplianinigor m. liplianin82100.00%1100.00%
Total82100.00%1100.00%


static int stv0288_sleep(struct dvb_frontend *fe) { struct stv0288_state *state = fe->demodulator_priv; stv0288_writeregI(state, 0x41, 0x84); state->initialised = 0; return 0; }

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igor m. liplianinigor m. liplianin38100.00%1100.00%
Total38100.00%1100.00%


static int stv0288_read_snr(struct dvb_frontend *fe, u16 *snr) { struct stv0288_state *state = fe->demodulator_priv; s32 xsnr = 0xffff - ((stv0288_readreg(state, 0x2d) << 8) | stv0288_readreg(state, 0x2e)); xsnr = 3 * (xsnr - 0xa100); *snr = (xsnr > 0xffff) ? 0xffff : (xsnr < 0) ? 0 : xsnr; dprintk("stv0288_read_snr %d\n", *snr); return 0; }

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igor m. liplianinigor m. liplianin91100.00%1100.00%
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static int stv0288_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) { struct stv0288_state *state = fe->demodulator_priv; if (state->errmode != STATUS_BER) return 0; *ucblocks = (stv0288_readreg(state, 0x26) << 8) | stv0288_readreg(state, 0x27); dprintk("stv0288_read_ber %d\n", *ucblocks); return 0; }

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igor m. liplianinigor m. liplianin67100.00%1100.00%
Total67100.00%1100.00%


static int stv0288_set_property(struct dvb_frontend *fe, struct dtv_property *p) { dprintk("%s(..)\n", __func__); return 0; }

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igor m. liplianinigor m. liplianin26100.00%1100.00%
Total26100.00%1100.00%


static int stv0288_set_frontend(struct dvb_frontend *fe) { struct stv0288_state *state = fe->demodulator_priv; struct dtv_frontend_properties *c = &fe->dtv_property_cache; char tm; unsigned char tda[3]; u8 reg, time_out = 0; dprintk("%s : FE_SET_FRONTEND\n", __func__); if (c->delivery_system != SYS_DVBS) { dprintk("%s: unsupported delivery " "system selected (%d)\n", __func__, c->delivery_system); return -EOPNOTSUPP; } if (state->config->set_ts_params) state->config->set_ts_params(fe, 0); /* only frequency & symbol_rate are used for tuner*/ if (fe->ops.tuner_ops.set_params) { fe->ops.tuner_ops.set_params(fe); if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0); } udelay(10); stv0288_set_symbolrate(fe, c->symbol_rate); /* Carrier lock control register */ stv0288_writeregI(state, 0x15, 0xc5); tda[2] = 0x0; /* CFRL */ for (tm = -9; tm < 7;) { /* Viterbi status */ reg = stv0288_readreg(state, 0x24); if (reg & 0x8) break; if (reg & 0x80) { time_out++; if (time_out > 10) break; tda[2] += 40; if (tda[2] < 40) tm++; } else { tm++; tda[2] = 0; time_out = 0; } tda[1] = (unsigned char)tm; stv0288_writeregI(state, 0x2b, tda[1]); stv0288_writeregI(state, 0x2c, tda[2]); msleep(30); } state->tuner_frequency = c->frequency; state->fec_inner = FEC_AUTO; state->symbol_rate = c->symbol_rate; return 0; }

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igor m. liplianinigor m. liplianin27384.26%125.00%
malcolm priestleymalcolm priestley5115.74%375.00%
Total324100.00%4100.00%


static int stv0288_i2c_gate_ctrl(struct dvb_frontend *fe, int enable) { struct stv0288_state *state = fe->demodulator_priv; if (enable) stv0288_writeregI(state, 0x01, 0xb5); else stv0288_writeregI(state, 0x01, 0x35); udelay(1); return 0; }

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igor m. liplianinigor m. liplianin54100.00%1100.00%
Total54100.00%1100.00%


static void stv0288_release(struct dvb_frontend *fe) { struct stv0288_state *state = fe->demodulator_priv; kfree(state); }

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igor m. liplianinigor m. liplianin25100.00%1100.00%
Total25100.00%1100.00%

static struct dvb_frontend_ops stv0288_ops = { .delsys = { SYS_DVBS }, .info = { .name = "ST STV0288 DVB-S", .frequency_min = 950000, .frequency_max = 2150000, .frequency_stepsize = 1000, /* kHz for QPSK frontends */ .frequency_tolerance = 0, .symbol_rate_min = 1000000, .symbol_rate_max = 45000000, .symbol_rate_tolerance = 500, /* ppm */ .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_QPSK | FE_CAN_FEC_AUTO }, .release = stv0288_release, .init = stv0288_init, .sleep = stv0288_sleep, .write = stv0288_write, .i2c_gate_ctrl = stv0288_i2c_gate_ctrl, .read_status = stv0288_read_status, .read_ber = stv0288_read_ber, .read_signal_strength = stv0288_read_signal_strength, .read_snr = stv0288_read_snr, .read_ucblocks = stv0288_read_ucblocks, .diseqc_send_master_cmd = stv0288_send_diseqc_msg, .diseqc_send_burst = stv0288_send_diseqc_burst, .set_tone = stv0288_set_tone, .set_voltage = stv0288_set_voltage, .set_property = stv0288_set_property, .set_frontend = stv0288_set_frontend, };
struct dvb_frontend *stv0288_attach(const struct stv0288_config *config, 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; }

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igor m. liplianinigor m. liplianin17799.44%150.00%
matthias schwarzottmatthias schwarzott10.56%150.00%
Total178100.00%2100.00%

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");

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igor m. liplianinigor m. liplianin265294.41%216.67%
malcolm priestleymalcolm priestley1364.84%650.00%
mauro carvalho chehabmauro carvalho chehab180.64%216.67%
lawrence rustlawrence rust20.07%18.33%
matthias schwarzottmatthias schwarzott10.04%18.33%
Total2809100.00%12100.00%
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