--- /dev/null
+/*
+ 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;
+ fe_code_rate_t 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;
+}
+
+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]);
+}
+
+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];
+}
+
+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;
+}
+
+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;
+}
+
+static int stv0288_send_diseqc_burst(struct dvb_frontend *fe,
+ fe_sec_mini_cmd_t 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;
+}
+
+static int stv0288_set_tone(struct dvb_frontend *fe, fe_sec_tone_mode_t 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;
+}
+
+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, fe_sec_voltage_t volt)
+{
+ dprintk("%s: %s\n", __func__,
+ volt == SEC_VOLTAGE_13 ? "SEC_VOLTAGE_13" :
+ volt == SEC_VOLTAGE_18 ? "SEC_VOLTAGE_18" : "??");
+
+ return 0;
+}
+
+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;
+}
+
+static int stv0288_read_status(struct dvb_frontend *fe, fe_status_t *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;
+}
+
+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;
+}
+
+
+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;
+}
+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;
+}
+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;
+}
+
+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;
+}
+
+static int stv0288_set_property(struct dvb_frontend *fe, struct dtv_property *p)
+{
+ dprintk("%s(..)\n", __func__);
+ return 0;
+}
+
+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;
+}
+
+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;
+}
+
+static void stv0288_release(struct dvb_frontend *fe)
+{
+ struct stv0288_state *state = fe->demodulator_priv;
+ kfree(state);
+}
+
+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;
+}
+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");
+
Code Review / kvmfornfv.git / blobdiff