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-rw-r--r--drivers/media/dvb-frontends/mt312.c839
1 files changed, 839 insertions, 0 deletions
diff --git a/drivers/media/dvb-frontends/mt312.c b/drivers/media/dvb-frontends/mt312.c
new file mode 100644
index 000000000..fb867dd8a
--- /dev/null
+++ b/drivers/media/dvb-frontends/mt312.c
@@ -0,0 +1,839 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ Driver for Zarlink VP310/MT312/ZL10313 Satellite Channel Decoder
+
+ Copyright (C) 2003 Andreas Oberritter <obi@linuxtv.org>
+ Copyright (C) 2008 Matthias Schwarzott <zzam@gentoo.org>
+
+
+ References:
+ http://products.zarlink.com/product_profiles/MT312.htm
+ http://products.zarlink.com/product_profiles/SL1935.htm
+*/
+
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/string.h>
+#include <linux/slab.h>
+
+#include <media/dvb_frontend.h>
+#include "mt312_priv.h"
+#include "mt312.h"
+
+/* Max transfer size done by I2C transfer functions */
+#define MAX_XFER_SIZE 64
+
+struct mt312_state {
+ struct i2c_adapter *i2c;
+ /* configuration settings */
+ const struct mt312_config *config;
+ struct dvb_frontend frontend;
+
+ u8 id;
+ unsigned long xtal;
+ u8 freq_mult;
+};
+
+static int debug;
+#define dprintk(args...) \
+ do { \
+ if (debug) \
+ printk(KERN_DEBUG "mt312: " args); \
+ } while (0)
+
+#define MT312_PLL_CLK 10000000UL /* 10 MHz */
+#define MT312_PLL_CLK_10_111 10111000UL /* 10.111 MHz */
+
+static int mt312_read(struct mt312_state *state, const enum mt312_reg_addr reg,
+ u8 *buf, const size_t count)
+{
+ int ret;
+ struct i2c_msg msg[2];
+ u8 regbuf[1] = { reg };
+
+ msg[0].addr = state->config->demod_address;
+ msg[0].flags = 0;
+ msg[0].buf = regbuf;
+ msg[0].len = 1;
+ msg[1].addr = state->config->demod_address;
+ msg[1].flags = I2C_M_RD;
+ msg[1].buf = buf;
+ msg[1].len = count;
+
+ ret = i2c_transfer(state->i2c, msg, 2);
+
+ if (ret != 2) {
+ printk(KERN_DEBUG "%s: ret == %d\n", __func__, ret);
+ return -EREMOTEIO;
+ }
+
+ if (debug) {
+ int i;
+ dprintk("R(%d):", reg & 0x7f);
+ for (i = 0; i < count; i++)
+ printk(KERN_CONT " %02x", buf[i]);
+ printk("\n");
+ }
+
+ return 0;
+}
+
+static int mt312_write(struct mt312_state *state, const enum mt312_reg_addr reg,
+ const u8 *src, const size_t count)
+{
+ int ret;
+ u8 buf[MAX_XFER_SIZE];
+ struct i2c_msg msg;
+
+ if (1 + count > sizeof(buf)) {
+ printk(KERN_WARNING
+ "mt312: write: len=%zu is too big!\n", count);
+ return -EINVAL;
+ }
+
+ if (debug) {
+ int i;
+ dprintk("W(%d):", reg & 0x7f);
+ for (i = 0; i < count; i++)
+ printk(KERN_CONT " %02x", src[i]);
+ printk("\n");
+ }
+
+ buf[0] = reg;
+ memcpy(&buf[1], src, count);
+
+ msg.addr = state->config->demod_address;
+ msg.flags = 0;
+ msg.buf = buf;
+ msg.len = count + 1;
+
+ ret = i2c_transfer(state->i2c, &msg, 1);
+
+ if (ret != 1) {
+ dprintk("%s: ret == %d\n", __func__, ret);
+ return -EREMOTEIO;
+ }
+
+ return 0;
+}
+
+static inline int mt312_readreg(struct mt312_state *state,
+ const enum mt312_reg_addr reg, u8 *val)
+{
+ return mt312_read(state, reg, val, 1);
+}
+
+static inline int mt312_writereg(struct mt312_state *state,
+ const enum mt312_reg_addr reg, const u8 val)
+{
+ u8 tmp = val; /* see gcc.gnu.org/bugzilla/show_bug.cgi?id=81715 */
+
+
+ return mt312_write(state, reg, &tmp, 1);
+}
+
+static int mt312_reset(struct mt312_state *state, const u8 full)
+{
+ return mt312_writereg(state, RESET, full ? 0x80 : 0x40);
+}
+
+static int mt312_get_inversion(struct mt312_state *state,
+ enum fe_spectral_inversion *i)
+{
+ int ret;
+ u8 vit_mode;
+
+ ret = mt312_readreg(state, VIT_MODE, &vit_mode);
+ if (ret < 0)
+ return ret;
+
+ if (vit_mode & 0x80) /* auto inversion was used */
+ *i = (vit_mode & 0x40) ? INVERSION_ON : INVERSION_OFF;
+
+ return 0;
+}
+
+static int mt312_get_symbol_rate(struct mt312_state *state, u32 *sr)
+{
+ int ret;
+ u8 sym_rate_h;
+ u8 dec_ratio;
+ u16 sym_rat_op;
+ u16 monitor;
+ u8 buf[2];
+
+ ret = mt312_readreg(state, SYM_RATE_H, &sym_rate_h);
+ if (ret < 0)
+ return ret;
+
+ if (sym_rate_h & 0x80) {
+ /* symbol rate search was used */
+ ret = mt312_writereg(state, MON_CTRL, 0x03);
+ if (ret < 0)
+ return ret;
+
+ ret = mt312_read(state, MONITOR_H, buf, sizeof(buf));
+ if (ret < 0)
+ return ret;
+
+ monitor = (buf[0] << 8) | buf[1];
+
+ dprintk("sr(auto) = %u\n",
+ DIV_ROUND_CLOSEST(monitor * 15625, 4));
+ } else {
+ ret = mt312_writereg(state, MON_CTRL, 0x05);
+ if (ret < 0)
+ return ret;
+
+ ret = mt312_read(state, MONITOR_H, buf, sizeof(buf));
+ if (ret < 0)
+ return ret;
+
+ dec_ratio = ((buf[0] >> 5) & 0x07) * 32;
+
+ ret = mt312_read(state, SYM_RAT_OP_H, buf, sizeof(buf));
+ if (ret < 0)
+ return ret;
+
+ sym_rat_op = (buf[0] << 8) | buf[1];
+
+ dprintk("sym_rat_op=%d dec_ratio=%d\n",
+ sym_rat_op, dec_ratio);
+ dprintk("*sr(manual) = %lu\n",
+ (((state->xtal * 8192) / (sym_rat_op + 8192)) *
+ 2) - dec_ratio);
+ }
+
+ return 0;
+}
+
+static int mt312_get_code_rate(struct mt312_state *state, enum fe_code_rate *cr)
+{
+ const enum fe_code_rate fec_tab[8] =
+ { FEC_1_2, FEC_2_3, FEC_3_4, FEC_5_6, FEC_6_7, FEC_7_8,
+ FEC_AUTO, FEC_AUTO };
+
+ int ret;
+ u8 fec_status;
+
+ ret = mt312_readreg(state, FEC_STATUS, &fec_status);
+ if (ret < 0)
+ return ret;
+
+ *cr = fec_tab[(fec_status >> 4) & 0x07];
+
+ return 0;
+}
+
+static int mt312_initfe(struct dvb_frontend *fe)
+{
+ struct mt312_state *state = fe->demodulator_priv;
+ int ret;
+ u8 buf[2];
+
+ /* wake up */
+ ret = mt312_writereg(state, CONFIG,
+ (state->freq_mult == 6 ? 0x88 : 0x8c));
+ if (ret < 0)
+ return ret;
+
+ /* wait at least 150 usec */
+ udelay(150);
+
+ /* full reset */
+ ret = mt312_reset(state, 1);
+ if (ret < 0)
+ return ret;
+
+/* Per datasheet, write correct values. 09/28/03 ACCJr.
+ * If we don't do this, we won't get FE_HAS_VITERBI in the VP310. */
+ {
+ u8 buf_def[8] = { 0x14, 0x12, 0x03, 0x02,
+ 0x01, 0x00, 0x00, 0x00 };
+
+ ret = mt312_write(state, VIT_SETUP, buf_def, sizeof(buf_def));
+ if (ret < 0)
+ return ret;
+ }
+
+ switch (state->id) {
+ case ID_ZL10313:
+ /* enable ADC */
+ ret = mt312_writereg(state, GPP_CTRL, 0x80);
+ if (ret < 0)
+ return ret;
+
+ /* configure ZL10313 for optimal ADC performance */
+ buf[0] = 0x80;
+ buf[1] = 0xB0;
+ ret = mt312_write(state, HW_CTRL, buf, 2);
+ if (ret < 0)
+ return ret;
+
+ /* enable MPEG output and ADCs */
+ ret = mt312_writereg(state, HW_CTRL, 0x00);
+ if (ret < 0)
+ return ret;
+
+ ret = mt312_writereg(state, MPEG_CTRL, 0x00);
+ if (ret < 0)
+ return ret;
+
+ break;
+ }
+
+ /* SYS_CLK */
+ buf[0] = DIV_ROUND_CLOSEST(state->xtal * state->freq_mult * 2, 1000000);
+
+ /* DISEQC_RATIO */
+ buf[1] = DIV_ROUND_CLOSEST(state->xtal, 22000 * 4);
+
+ ret = mt312_write(state, SYS_CLK, buf, sizeof(buf));
+ if (ret < 0)
+ return ret;
+
+ ret = mt312_writereg(state, SNR_THS_HIGH, 0x32);
+ if (ret < 0)
+ return ret;
+
+ /* different MOCLK polarity */
+ switch (state->id) {
+ case ID_ZL10313:
+ buf[0] = 0x33;
+ break;
+ default:
+ buf[0] = 0x53;
+ break;
+ }
+
+ ret = mt312_writereg(state, OP_CTRL, buf[0]);
+ if (ret < 0)
+ return ret;
+
+ /* TS_SW_LIM */
+ buf[0] = 0x8c;
+ buf[1] = 0x98;
+
+ ret = mt312_write(state, TS_SW_LIM_L, buf, sizeof(buf));
+ if (ret < 0)
+ return ret;
+
+ ret = mt312_writereg(state, CS_SW_LIM, 0x69);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int mt312_send_master_cmd(struct dvb_frontend *fe,
+ struct dvb_diseqc_master_cmd *c)
+{
+ struct mt312_state *state = fe->demodulator_priv;
+ int ret;
+ u8 diseqc_mode;
+
+ if ((c->msg_len == 0) || (c->msg_len > sizeof(c->msg)))
+ return -EINVAL;
+
+ ret = mt312_readreg(state, DISEQC_MODE, &diseqc_mode);
+ if (ret < 0)
+ return ret;
+
+ ret = mt312_write(state, (0x80 | DISEQC_INSTR), c->msg, c->msg_len);
+ if (ret < 0)
+ return ret;
+
+ ret = mt312_writereg(state, DISEQC_MODE,
+ (diseqc_mode & 0x40) | ((c->msg_len - 1) << 3)
+ | 0x04);
+ if (ret < 0)
+ return ret;
+
+ /* is there a better way to wait for message to be transmitted */
+ msleep(100);
+
+ /* set DISEQC_MODE[2:0] to zero if a return message is expected */
+ if (c->msg[0] & 0x02) {
+ ret = mt312_writereg(state, DISEQC_MODE, (diseqc_mode & 0x40));
+ if (ret < 0)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int mt312_send_burst(struct dvb_frontend *fe,
+ const enum fe_sec_mini_cmd c)
+{
+ struct mt312_state *state = fe->demodulator_priv;
+ const u8 mini_tab[2] = { 0x02, 0x03 };
+
+ int ret;
+ u8 diseqc_mode;
+
+ if (c > SEC_MINI_B)
+ return -EINVAL;
+
+ ret = mt312_readreg(state, DISEQC_MODE, &diseqc_mode);
+ if (ret < 0)
+ return ret;
+
+ ret = mt312_writereg(state, DISEQC_MODE,
+ (diseqc_mode & 0x40) | mini_tab[c]);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int mt312_set_tone(struct dvb_frontend *fe,
+ const enum fe_sec_tone_mode t)
+{
+ struct mt312_state *state = fe->demodulator_priv;
+ const u8 tone_tab[2] = { 0x01, 0x00 };
+
+ int ret;
+ u8 diseqc_mode;
+
+ if (t > SEC_TONE_OFF)
+ return -EINVAL;
+
+ ret = mt312_readreg(state, DISEQC_MODE, &diseqc_mode);
+ if (ret < 0)
+ return ret;
+
+ ret = mt312_writereg(state, DISEQC_MODE,
+ (diseqc_mode & 0x40) | tone_tab[t]);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int mt312_set_voltage(struct dvb_frontend *fe,
+ const enum fe_sec_voltage v)
+{
+ struct mt312_state *state = fe->demodulator_priv;
+ const u8 volt_tab[3] = { 0x00, 0x40, 0x00 };
+ u8 val;
+
+ if (v > SEC_VOLTAGE_OFF)
+ return -EINVAL;
+
+ val = volt_tab[v];
+ if (state->config->voltage_inverted)
+ val ^= 0x40;
+
+ return mt312_writereg(state, DISEQC_MODE, val);
+}
+
+static int mt312_read_status(struct dvb_frontend *fe, enum fe_status *s)
+{
+ struct mt312_state *state = fe->demodulator_priv;
+ int ret;
+ u8 status[3];
+
+ *s = 0;
+
+ ret = mt312_read(state, QPSK_STAT_H, status, sizeof(status));
+ if (ret < 0)
+ return ret;
+
+ dprintk("QPSK_STAT_H: 0x%02x, QPSK_STAT_L: 0x%02x, FEC_STATUS: 0x%02x\n",
+ status[0], status[1], status[2]);
+
+ if (status[0] & 0xc0)
+ *s |= FE_HAS_SIGNAL; /* signal noise ratio */
+ if (status[0] & 0x04)
+ *s |= FE_HAS_CARRIER; /* qpsk carrier lock */
+ if (status[2] & 0x02)
+ *s |= FE_HAS_VITERBI; /* viterbi lock */
+ if (status[2] & 0x04)
+ *s |= FE_HAS_SYNC; /* byte align lock */
+ if (status[0] & 0x01)
+ *s |= FE_HAS_LOCK; /* qpsk lock */
+
+ return 0;
+}
+
+static int mt312_read_ber(struct dvb_frontend *fe, u32 *ber)
+{
+ struct mt312_state *state = fe->demodulator_priv;
+ int ret;
+ u8 buf[3];
+
+ ret = mt312_read(state, RS_BERCNT_H, buf, 3);
+ if (ret < 0)
+ return ret;
+
+ *ber = ((buf[0] << 16) | (buf[1] << 8) | buf[2]) * 64;
+
+ return 0;
+}
+
+static int mt312_read_signal_strength(struct dvb_frontend *fe,
+ u16 *signal_strength)
+{
+ struct mt312_state *state = fe->demodulator_priv;
+ int ret;
+ u8 buf[3];
+ u16 agc;
+ s16 err_db;
+
+ ret = mt312_read(state, AGC_H, buf, sizeof(buf));
+ if (ret < 0)
+ return ret;
+
+ agc = (buf[0] << 6) | (buf[1] >> 2);
+ err_db = (s16) (((buf[1] & 0x03) << 14) | buf[2] << 6) >> 6;
+
+ *signal_strength = agc;
+
+ dprintk("agc=%08x err_db=%hd\n", agc, err_db);
+
+ return 0;
+}
+
+static int mt312_read_snr(struct dvb_frontend *fe, u16 *snr)
+{
+ struct mt312_state *state = fe->demodulator_priv;
+ int ret;
+ u8 buf[2];
+
+ ret = mt312_read(state, M_SNR_H, buf, sizeof(buf));
+ if (ret < 0)
+ return ret;
+
+ *snr = 0xFFFF - ((((buf[0] & 0x7f) << 8) | buf[1]) << 1);
+
+ return 0;
+}
+
+static int mt312_read_ucblocks(struct dvb_frontend *fe, u32 *ubc)
+{
+ struct mt312_state *state = fe->demodulator_priv;
+ int ret;
+ u8 buf[2];
+
+ ret = mt312_read(state, RS_UBC_H, buf, sizeof(buf));
+ if (ret < 0)
+ return ret;
+
+ *ubc = (buf[0] << 8) | buf[1];
+
+ return 0;
+}
+
+static int mt312_set_frontend(struct dvb_frontend *fe)
+{
+ struct dtv_frontend_properties *p = &fe->dtv_property_cache;
+ struct mt312_state *state = fe->demodulator_priv;
+ int ret;
+ u8 buf[5], config_val;
+ u16 sr;
+
+ const u8 fec_tab[10] =
+ { 0x00, 0x01, 0x02, 0x04, 0x3f, 0x08, 0x10, 0x20, 0x3f, 0x3f };
+ const u8 inv_tab[3] = { 0x00, 0x40, 0x80 };
+
+ dprintk("%s: Freq %d\n", __func__, p->frequency);
+
+ if ((p->frequency < fe->ops.info.frequency_min_hz / kHz)
+ || (p->frequency > fe->ops.info.frequency_max_hz / kHz))
+ return -EINVAL;
+
+ if (((int)p->inversion < INVERSION_OFF)
+ || (p->inversion > INVERSION_ON))
+ return -EINVAL;
+
+ if ((p->symbol_rate < fe->ops.info.symbol_rate_min)
+ || (p->symbol_rate > fe->ops.info.symbol_rate_max))
+ return -EINVAL;
+
+ if (((int)p->fec_inner < FEC_NONE)
+ || (p->fec_inner > FEC_AUTO))
+ return -EINVAL;
+
+ if ((p->fec_inner == FEC_4_5)
+ || (p->fec_inner == FEC_8_9))
+ return -EINVAL;
+
+ switch (state->id) {
+ case ID_VP310:
+ /* For now we will do this only for the VP310.
+ * It should be better for the mt312 as well,
+ * but tuning will be slower. ACCJr 09/29/03
+ */
+ ret = mt312_readreg(state, CONFIG, &config_val);
+ if (ret < 0)
+ return ret;
+ if (p->symbol_rate >= 30000000) {
+ /* Note that 30MS/s should use 90MHz */
+ if (state->freq_mult == 6) {
+ /* We are running 60MHz */
+ state->freq_mult = 9;
+ ret = mt312_initfe(fe);
+ if (ret < 0)
+ return ret;
+ }
+ } else {
+ if (state->freq_mult == 9) {
+ /* We are running 90MHz */
+ state->freq_mult = 6;
+ ret = mt312_initfe(fe);
+ if (ret < 0)
+ return ret;
+ }
+ }
+ break;
+
+ case ID_MT312:
+ case ID_ZL10313:
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ 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);
+ }
+
+ /* sr = (u16)(sr * 256.0 / 1000000.0) */
+ sr = DIV_ROUND_CLOSEST(p->symbol_rate * 4, 15625);
+
+ /* SYM_RATE */
+ buf[0] = (sr >> 8) & 0x3f;
+ buf[1] = (sr >> 0) & 0xff;
+
+ /* VIT_MODE */
+ buf[2] = inv_tab[p->inversion] | fec_tab[p->fec_inner];
+
+ /* QPSK_CTRL */
+ buf[3] = 0x40; /* swap I and Q before QPSK demodulation */
+
+ if (p->symbol_rate < 10000000)
+ buf[3] |= 0x04; /* use afc mode */
+
+ /* GO */
+ buf[4] = 0x01;
+
+ ret = mt312_write(state, SYM_RATE_H, buf, sizeof(buf));
+ if (ret < 0)
+ return ret;
+
+ ret = mt312_reset(state, 0);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int mt312_get_frontend(struct dvb_frontend *fe,
+ struct dtv_frontend_properties *p)
+{
+ struct mt312_state *state = fe->demodulator_priv;
+ int ret;
+
+ ret = mt312_get_inversion(state, &p->inversion);
+ if (ret < 0)
+ return ret;
+
+ ret = mt312_get_symbol_rate(state, &p->symbol_rate);
+ if (ret < 0)
+ return ret;
+
+ ret = mt312_get_code_rate(state, &p->fec_inner);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int mt312_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)
+{
+ struct mt312_state *state = fe->demodulator_priv;
+
+ u8 val = 0x00;
+ int ret;
+
+ switch (state->id) {
+ case ID_ZL10313:
+ ret = mt312_readreg(state, GPP_CTRL, &val);
+ if (ret < 0)
+ goto error;
+
+ /* preserve this bit to not accidentally shutdown ADC */
+ val &= 0x80;
+ break;
+ }
+
+ if (enable)
+ val |= 0x40;
+ else
+ val &= ~0x40;
+
+ ret = mt312_writereg(state, GPP_CTRL, val);
+
+error:
+ return ret;
+}
+
+static int mt312_sleep(struct dvb_frontend *fe)
+{
+ struct mt312_state *state = fe->demodulator_priv;
+ int ret;
+ u8 config;
+
+ /* reset all registers to defaults */
+ ret = mt312_reset(state, 1);
+ if (ret < 0)
+ return ret;
+
+ if (state->id == ID_ZL10313) {
+ /* reset ADC */
+ ret = mt312_writereg(state, GPP_CTRL, 0x00);
+ if (ret < 0)
+ return ret;
+
+ /* full shutdown of ADCs, mpeg bus tristated */
+ ret = mt312_writereg(state, HW_CTRL, 0x0d);
+ if (ret < 0)
+ return ret;
+ }
+
+ ret = mt312_readreg(state, CONFIG, &config);
+ if (ret < 0)
+ return ret;
+
+ /* enter standby */
+ ret = mt312_writereg(state, CONFIG, config & 0x7f);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int mt312_get_tune_settings(struct dvb_frontend *fe,
+ struct dvb_frontend_tune_settings *fesettings)
+{
+ fesettings->min_delay_ms = 50;
+ fesettings->step_size = 0;
+ fesettings->max_drift = 0;
+ return 0;
+}
+
+static void mt312_release(struct dvb_frontend *fe)
+{
+ struct mt312_state *state = fe->demodulator_priv;
+ kfree(state);
+}
+
+#define MT312_SYS_CLK 90000000UL /* 90 MHz */
+static const struct dvb_frontend_ops mt312_ops = {
+ .delsys = { SYS_DVBS },
+ .info = {
+ .name = "Zarlink ???? DVB-S",
+ .frequency_min_hz = 950 * MHz,
+ .frequency_max_hz = 2150 * MHz,
+ /* FIXME: adjust freq to real used xtal */
+ .frequency_stepsize_hz = MT312_PLL_CLK / 128,
+ .symbol_rate_min = MT312_SYS_CLK / 128, /* FIXME as above */
+ .symbol_rate_max = MT312_SYS_CLK / 2,
+ .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_FEC_AUTO | FE_CAN_QPSK | FE_CAN_MUTE_TS |
+ FE_CAN_RECOVER
+ },
+
+ .release = mt312_release,
+
+ .init = mt312_initfe,
+ .sleep = mt312_sleep,
+ .i2c_gate_ctrl = mt312_i2c_gate_ctrl,
+
+ .set_frontend = mt312_set_frontend,
+ .get_frontend = mt312_get_frontend,
+ .get_tune_settings = mt312_get_tune_settings,
+
+ .read_status = mt312_read_status,
+ .read_ber = mt312_read_ber,
+ .read_signal_strength = mt312_read_signal_strength,
+ .read_snr = mt312_read_snr,
+ .read_ucblocks = mt312_read_ucblocks,
+
+ .diseqc_send_master_cmd = mt312_send_master_cmd,
+ .diseqc_send_burst = mt312_send_burst,
+ .set_tone = mt312_set_tone,
+ .set_voltage = mt312_set_voltage,
+};
+
+struct dvb_frontend *mt312_attach(const struct mt312_config *config,
+ struct i2c_adapter *i2c)
+{
+ struct mt312_state *state = NULL;
+
+ /* allocate memory for the internal state */
+ state = kzalloc(sizeof(struct mt312_state), GFP_KERNEL);
+ if (state == NULL)
+ goto error;
+
+ /* setup the state */
+ state->config = config;
+ state->i2c = i2c;
+
+ /* check if the demod is there */
+ if (mt312_readreg(state, ID, &state->id) < 0)
+ goto error;
+
+ /* create dvb_frontend */
+ memcpy(&state->frontend.ops, &mt312_ops,
+ sizeof(struct dvb_frontend_ops));
+ state->frontend.demodulator_priv = state;
+
+ switch (state->id) {
+ case ID_VP310:
+ strscpy(state->frontend.ops.info.name, "Zarlink VP310 DVB-S",
+ sizeof(state->frontend.ops.info.name));
+ state->xtal = MT312_PLL_CLK;
+ state->freq_mult = 9;
+ break;
+ case ID_MT312:
+ strscpy(state->frontend.ops.info.name, "Zarlink MT312 DVB-S",
+ sizeof(state->frontend.ops.info.name));
+ state->xtal = MT312_PLL_CLK;
+ state->freq_mult = 6;
+ break;
+ case ID_ZL10313:
+ strscpy(state->frontend.ops.info.name, "Zarlink ZL10313 DVB-S",
+ sizeof(state->frontend.ops.info.name));
+ state->xtal = MT312_PLL_CLK_10_111;
+ state->freq_mult = 9;
+ break;
+ default:
+ printk(KERN_WARNING "Only Zarlink VP310/MT312/ZL10313 are supported chips.\n");
+ goto error;
+ }
+
+ return &state->frontend;
+
+error:
+ kfree(state);
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(mt312_attach);
+
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
+
+MODULE_DESCRIPTION("Zarlink VP310/MT312/ZL10313 DVB-S Demodulator driver");
+MODULE_AUTHOR("Andreas Oberritter <obi@linuxtv.org>");
+MODULE_AUTHOR("Matthias Schwarzott <zzam@gentoo.org>");
+MODULE_LICENSE("GPL");
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-01 02:06:02 +0000