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Diffstat (limited to 'drivers/media/dvb/frontends/it913x-fe.c')
-rw-r--r--drivers/media/dvb/frontends/it913x-fe.c839
1 files changed, 839 insertions, 0 deletions
diff --git a/drivers/media/dvb/frontends/it913x-fe.c b/drivers/media/dvb/frontends/it913x-fe.c
new file mode 100644
index 000000000000..d4bd24eb4700
--- /dev/null
+++ b/drivers/media/dvb/frontends/it913x-fe.c
@@ -0,0 +1,839 @@
+/*
+ * Driver for it913x-fe Frontend
+ *
+ * with support for on chip it9137 integral tuner
+ *
+ * Copyright (C) 2011 Malcolm Priestley (tvboxspy@gmail.com)
+ * IT9137 Copyright (C) ITE Tech Inc.
+ *
+ * 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/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+
+#include "dvb_frontend.h"
+#include "it913x-fe.h"
+#include "it913x-fe-priv.h"
+
+static int it913x_debug;
+
+module_param_named(debug, it913x_debug, int, 0644);
+MODULE_PARM_DESC(debug, "set debugging level (1=info (or-able)).");
+
+#define dprintk(level, args...) do { \
+ if (level & it913x_debug) \
+ printk(KERN_DEBUG "it913x-fe: " args); \
+} while (0)
+
+#define deb_info(args...) dprintk(0x01, args)
+#define debug_data_snipet(level, name, p) \
+ dprintk(level, name" (%02x%02x%02x%02x%02x%02x%02x%02x)", \
+ *p, *(p+1), *(p+2), *(p+3), *(p+4), \
+ *(p+5), *(p+6), *(p+7));
+
+struct it913x_fe_state {
+ struct dvb_frontend frontend;
+ struct i2c_adapter *i2c_adap;
+ u8 i2c_addr;
+ u32 frequency;
+ u8 adf;
+ u32 crystalFrequency;
+ u32 adcFrequency;
+ u8 tuner_type;
+ struct adctable *table;
+ fe_status_t it913x_status;
+ u16 tun_xtal;
+ u8 tun_fdiv;
+ u8 tun_clk_mode;
+ u32 tun_fn_min;
+};
+
+static int it913x_read_reg(struct it913x_fe_state *state,
+ u32 reg, u8 *data, u8 count)
+{
+ int ret;
+ u8 pro = PRO_DMOD; /* All reads from demodulator */
+ u8 b[4];
+ struct i2c_msg msg[2] = {
+ { .addr = state->i2c_addr + (pro << 1), .flags = 0,
+ .buf = b, .len = sizeof(b) },
+ { .addr = state->i2c_addr + (pro << 1), .flags = I2C_M_RD,
+ .buf = data, .len = count }
+ };
+ b[0] = (u8) reg >> 24;
+ b[1] = (u8)(reg >> 16) & 0xff;
+ b[2] = (u8)(reg >> 8) & 0xff;
+ b[3] = (u8) reg & 0xff;
+
+ ret = i2c_transfer(state->i2c_adap, msg, 2);
+
+ return ret;
+}
+
+static int it913x_read_reg_u8(struct it913x_fe_state *state, u32 reg)
+{
+ int ret;
+ u8 b[1];
+ ret = it913x_read_reg(state, reg, &b[0], sizeof(b));
+ return (ret < 0) ? -ENODEV : b[0];
+}
+
+static int it913x_write(struct it913x_fe_state *state,
+ u8 pro, u32 reg, u8 buf[], u8 count)
+{
+ u8 b[256];
+ struct i2c_msg msg[1] = {
+ { .addr = state->i2c_addr + (pro << 1), .flags = 0,
+ .buf = b, .len = count + 4 }
+ };
+ int ret;
+
+ b[0] = (u8) reg >> 24;
+ b[1] = (u8)(reg >> 16) & 0xff;
+ b[2] = (u8)(reg >> 8) & 0xff;
+ b[3] = (u8) reg & 0xff;
+ memcpy(&b[4], buf, count);
+
+ ret = i2c_transfer(state->i2c_adap, msg, 1);
+
+ if (ret < 0)
+ return -EIO;
+
+ return 0;
+}
+
+static int it913x_write_reg(struct it913x_fe_state *state,
+ u8 pro, u32 reg, u32 data)
+{
+ int ret;
+ u8 b[4];
+ u8 s;
+
+ b[0] = data >> 24;
+ b[1] = (data >> 16) & 0xff;
+ b[2] = (data >> 8) & 0xff;
+ b[3] = data & 0xff;
+ /* expand write as needed */
+ if (data < 0x100)
+ s = 3;
+ else if (data < 0x1000)
+ s = 2;
+ else if (data < 0x100000)
+ s = 1;
+ else
+ s = 0;
+
+ ret = it913x_write(state, pro, reg, &b[s], sizeof(b) - s);
+
+ return ret;
+}
+
+static int it913x_fe_script_loader(struct it913x_fe_state *state,
+ struct it913xset *loadscript)
+{
+ int ret, i;
+ if (loadscript == NULL)
+ return -EINVAL;
+
+ for (i = 0; i < 1000; ++i) {
+ if (loadscript[i].pro == 0xff)
+ break;
+ ret = it913x_write(state, loadscript[i].pro,
+ loadscript[i].address,
+ loadscript[i].reg, loadscript[i].count);
+ if (ret < 0)
+ return -ENODEV;
+ }
+ return 0;
+}
+
+static int it913x_init_tuner(struct it913x_fe_state *state)
+{
+ int ret, i, reg;
+ u8 val, nv_val;
+ u8 nv[] = {48, 32, 24, 16, 12, 8, 6, 4, 2};
+ u8 b[2];
+
+ reg = it913x_read_reg_u8(state, 0xec86);
+ switch (reg) {
+ case 0:
+ state->tun_clk_mode = reg;
+ state->tun_xtal = 2000;
+ state->tun_fdiv = 3;
+ val = 16;
+ break;
+ case -ENODEV:
+ return -ENODEV;
+ case 1:
+ default:
+ state->tun_clk_mode = reg;
+ state->tun_xtal = 640;
+ state->tun_fdiv = 1;
+ val = 6;
+ break;
+ }
+
+ reg = it913x_read_reg_u8(state, 0xed03);
+
+ if (reg < 0)
+ return -ENODEV;
+ else if (reg < sizeof(nv))
+ nv_val = nv[reg];
+ else
+ nv_val = 2;
+
+ for (i = 0; i < 50; i++) {
+ ret = it913x_read_reg(state, 0xed23, &b[0], sizeof(b));
+ reg = (b[1] << 8) + b[0];
+ if (reg > 0)
+ break;
+ if (ret < 0)
+ return -ENODEV;
+ udelay(2000);
+ }
+ state->tun_fn_min = state->tun_xtal * reg;
+ state->tun_fn_min /= (state->tun_fdiv * nv_val);
+ deb_info("Tuner fn_min %d", state->tun_fn_min);
+
+ for (i = 0; i < 50; i++) {
+ reg = it913x_read_reg_u8(state, 0xec82);
+ if (reg > 0)
+ break;
+ if (reg < 0)
+ return -ENODEV;
+ udelay(2000);
+ }
+
+ return it913x_write_reg(state, PRO_DMOD, 0xed81, val);
+}
+
+static int it9137_set_tuner(struct it913x_fe_state *state,
+ enum fe_bandwidth bandwidth, u32 frequency_m)
+{
+ struct it913xset *set_tuner = set_it9137_template;
+ int ret, reg;
+ u32 frequency = frequency_m / 1000;
+ u32 freq, temp_f, tmp;
+ u16 iqik_m_cal;
+ u16 n_div;
+ u8 n;
+ u8 l_band;
+ u8 lna_band;
+ u8 bw;
+
+ deb_info("Tuner Frequency %d Bandwidth %d", frequency, bandwidth);
+
+ if (frequency >= 51000 && frequency <= 440000) {
+ l_band = 0;
+ lna_band = 0;
+ } else if (frequency > 440000 && frequency <= 484000) {
+ l_band = 1;
+ lna_band = 1;
+ } else if (frequency > 484000 && frequency <= 533000) {
+ l_band = 1;
+ lna_band = 2;
+ } else if (frequency > 533000 && frequency <= 587000) {
+ l_band = 1;
+ lna_band = 3;
+ } else if (frequency > 587000 && frequency <= 645000) {
+ l_band = 1;
+ lna_band = 4;
+ } else if (frequency > 645000 && frequency <= 710000) {
+ l_band = 1;
+ lna_band = 5;
+ } else if (frequency > 710000 && frequency <= 782000) {
+ l_band = 1;
+ lna_band = 6;
+ } else if (frequency > 782000 && frequency <= 860000) {
+ l_band = 1;
+ lna_band = 7;
+ } else if (frequency > 1450000 && frequency <= 1492000) {
+ l_band = 1;
+ lna_band = 0;
+ } else if (frequency > 1660000 && frequency <= 1685000) {
+ l_band = 1;
+ lna_band = 1;
+ } else
+ return -EINVAL;
+ set_tuner[0].reg[0] = lna_band;
+
+ if (bandwidth == BANDWIDTH_5_MHZ)
+ bw = 0;
+ else if (bandwidth == BANDWIDTH_6_MHZ)
+ bw = 2;
+ else if (bandwidth == BANDWIDTH_7_MHZ)
+ bw = 4;
+ else if (bandwidth == BANDWIDTH_8_MHZ)
+ bw = 6;
+ else
+ bw = 6;
+
+ set_tuner[1].reg[0] = bw;
+ set_tuner[2].reg[0] = 0xa0 | (l_band << 3);
+
+ if (frequency > 53000 && frequency <= 74000) {
+ n_div = 48;
+ n = 0;
+ } else if (frequency > 74000 && frequency <= 111000) {
+ n_div = 32;
+ n = 1;
+ } else if (frequency > 111000 && frequency <= 148000) {
+ n_div = 24;
+ n = 2;
+ } else if (frequency > 148000 && frequency <= 222000) {
+ n_div = 16;
+ n = 3;
+ } else if (frequency > 222000 && frequency <= 296000) {
+ n_div = 12;
+ n = 4;
+ } else if (frequency > 296000 && frequency <= 445000) {
+ n_div = 8;
+ n = 5;
+ } else if (frequency > 445000 && frequency <= state->tun_fn_min) {
+ n_div = 6;
+ n = 6;
+ } else if (frequency > state->tun_fn_min && frequency <= 950000) {
+ n_div = 4;
+ n = 7;
+ } else if (frequency > 1450000 && frequency <= 1680000) {
+ n_div = 2;
+ n = 0;
+ } else
+ return -EINVAL;
+
+ reg = it913x_read_reg_u8(state, 0xed81);
+ iqik_m_cal = (u16)reg * n_div;
+
+ if (reg < 0x20) {
+ if (state->tun_clk_mode == 0)
+ iqik_m_cal = (iqik_m_cal * 9) >> 5;
+ else
+ iqik_m_cal >>= 1;
+ } else {
+ iqik_m_cal = 0x40 - iqik_m_cal;
+ if (state->tun_clk_mode == 0)
+ iqik_m_cal = ~((iqik_m_cal * 9) >> 5);
+ else
+ iqik_m_cal = ~(iqik_m_cal >> 1);
+ }
+
+ temp_f = frequency * (u32)n_div * (u32)state->tun_fdiv;
+ freq = temp_f / state->tun_xtal;
+ tmp = freq * state->tun_xtal;
+
+ if ((temp_f - tmp) >= (state->tun_xtal >> 1))
+ freq++;
+
+ freq += (u32) n << 13;
+ /* Frequency OMEGA_IQIK_M_CAL_MID*/
+ temp_f = freq + (u32)iqik_m_cal;
+
+ set_tuner[3].reg[0] = temp_f & 0xff;
+ set_tuner[4].reg[0] = (temp_f >> 8) & 0xff;
+
+ deb_info("High Frequency = %04x", temp_f);
+
+ /* Lower frequency */
+ set_tuner[5].reg[0] = freq & 0xff;
+ set_tuner[6].reg[0] = (freq >> 8) & 0xff;
+
+ deb_info("low Frequency = %04x", freq);
+
+ ret = it913x_fe_script_loader(state, set_tuner);
+
+ return (ret < 0) ? -ENODEV : 0;
+}
+
+static int it913x_fe_select_bw(struct it913x_fe_state *state,
+ enum fe_bandwidth bandwidth, u32 adcFrequency)
+{
+ int ret, i;
+ u8 buffer[256];
+ u32 coeff[8];
+ u16 bfsfcw_fftinx_ratio;
+ u16 fftinx_bfsfcw_ratio;
+ u8 count;
+ u8 bw;
+ u8 adcmultiplier;
+
+ deb_info("Bandwidth %d Adc %d", bandwidth, adcFrequency);
+
+ if (bandwidth == BANDWIDTH_5_MHZ)
+ bw = 3;
+ else if (bandwidth == BANDWIDTH_6_MHZ)
+ bw = 0;
+ else if (bandwidth == BANDWIDTH_7_MHZ)
+ bw = 1;
+ else if (bandwidth == BANDWIDTH_8_MHZ)
+ bw = 2;
+ else
+ bw = 2;
+
+ ret = it913x_write_reg(state, PRO_DMOD, REG_BW, bw);
+
+ if (state->table == NULL)
+ return -EINVAL;
+
+ /* In write order */
+ coeff[0] = state->table[bw].coeff_1_2048;
+ coeff[1] = state->table[bw].coeff_2_2k;
+ coeff[2] = state->table[bw].coeff_1_8191;
+ coeff[3] = state->table[bw].coeff_1_8192;
+ coeff[4] = state->table[bw].coeff_1_8193;
+ coeff[5] = state->table[bw].coeff_2_8k;
+ coeff[6] = state->table[bw].coeff_1_4096;
+ coeff[7] = state->table[bw].coeff_2_4k;
+ bfsfcw_fftinx_ratio = state->table[bw].bfsfcw_fftinx_ratio;
+ fftinx_bfsfcw_ratio = state->table[bw].fftinx_bfsfcw_ratio;
+
+ /* ADC multiplier */
+ ret = it913x_read_reg_u8(state, ADC_X_2);
+ if (ret < 0)
+ return -EINVAL;
+
+ adcmultiplier = ret;
+
+ count = 0;
+
+ /* Build Buffer for COEFF Registers */
+ for (i = 0; i < 8; i++) {
+ if (adcmultiplier == 1)
+ coeff[i] /= 2;
+ buffer[count++] = (coeff[i] >> 24) & 0x3;
+ buffer[count++] = (coeff[i] >> 16) & 0xff;
+ buffer[count++] = (coeff[i] >> 8) & 0xff;
+ buffer[count++] = coeff[i] & 0xff;
+ }
+
+ /* bfsfcw_fftinx_ratio register 0x21-0x22 */
+ buffer[count++] = bfsfcw_fftinx_ratio & 0xff;
+ buffer[count++] = (bfsfcw_fftinx_ratio >> 8) & 0xff;
+ /* fftinx_bfsfcw_ratio register 0x23-0x24 */
+ buffer[count++] = fftinx_bfsfcw_ratio & 0xff;
+ buffer[count++] = (fftinx_bfsfcw_ratio >> 8) & 0xff;
+ /* start at COEFF_1_2048 and write through to fftinx_bfsfcw_ratio*/
+ ret = it913x_write(state, PRO_DMOD, COEFF_1_2048, buffer, count);
+
+ for (i = 0; i < 42; i += 8)
+ debug_data_snipet(0x1, "Buffer", &buffer[i]);
+
+ return ret;
+}
+
+
+
+static int it913x_fe_read_status(struct dvb_frontend *fe, fe_status_t *status)
+{
+ struct it913x_fe_state *state = fe->demodulator_priv;
+ int ret, i;
+ fe_status_t old_status = state->it913x_status;
+ *status = 0;
+
+ if (state->it913x_status == 0) {
+ ret = it913x_read_reg_u8(state, EMPTY_CHANNEL_STATUS);
+ if (ret == 0x1) {
+ *status |= FE_HAS_SIGNAL;
+ for (i = 0; i < 40; i++) {
+ ret = it913x_read_reg_u8(state, MP2IF_SYNC_LK);
+ if (ret == 0x1)
+ break;
+ msleep(25);
+ }
+ if (ret == 0x1)
+ *status |= FE_HAS_CARRIER
+ | FE_HAS_VITERBI
+ | FE_HAS_SYNC;
+ state->it913x_status = *status;
+ }
+ }
+
+ if (state->it913x_status & FE_HAS_SYNC) {
+ ret = it913x_read_reg_u8(state, TPSD_LOCK);
+ if (ret == 0x1)
+ *status |= FE_HAS_LOCK
+ | state->it913x_status;
+ else
+ state->it913x_status = 0;
+ if (old_status != state->it913x_status)
+ ret = it913x_write_reg(state, PRO_LINK, GPIOH3_O, ret);
+ }
+
+ return 0;
+}
+
+static int it913x_fe_read_signal_strength(struct dvb_frontend *fe,
+ u16 *strength)
+{
+ struct it913x_fe_state *state = fe->demodulator_priv;
+ int ret = it913x_read_reg_u8(state, SIGNAL_LEVEL);
+ /*SIGNAL_LEVEL always returns 100%! so using FE_HAS_SIGNAL as switch*/
+ if (state->it913x_status & FE_HAS_SIGNAL)
+ ret = (ret * 0xff) / 0x64;
+ else
+ ret = 0x0;
+ ret |= ret << 0x8;
+ *strength = ret;
+ return 0;
+}
+
+static int it913x_fe_read_snr(struct dvb_frontend *fe, u16* snr)
+{
+ struct it913x_fe_state *state = fe->demodulator_priv;
+ int ret = it913x_read_reg_u8(state, SIGNAL_QUALITY);
+ ret = (ret * 0xff) / 0x64;
+ ret |= (ret << 0x8);
+ *snr = ~ret;
+ return 0;
+}
+
+static int it913x_fe_read_ber(struct dvb_frontend *fe, u32 *ber)
+{
+ *ber = 0;
+ return 0;
+}
+
+static int it913x_fe_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
+{
+ *ucblocks = 0;
+ return 0;
+}
+
+static int it913x_fe_get_frontend(struct dvb_frontend *fe,
+ struct dvb_frontend_parameters *p)
+{
+ struct it913x_fe_state *state = fe->demodulator_priv;
+ int ret;
+ u8 reg[8];
+
+ ret = it913x_read_reg(state, REG_TPSD_TX_MODE, reg, sizeof(reg));
+
+ if (reg[3] < 3)
+ p->u.ofdm.constellation = fe_con[reg[3]];
+
+ if (reg[0] < 3)
+ p->u.ofdm.transmission_mode = fe_mode[reg[0]];
+
+ if (reg[1] < 4)
+ p->u.ofdm.guard_interval = fe_gi[reg[1]];
+
+ if (reg[2] < 4)
+ p->u.ofdm.hierarchy_information = fe_hi[reg[2]];
+
+ p->u.ofdm.code_rate_HP = (reg[6] < 6) ? fe_code[reg[6]] : FEC_NONE;
+ p->u.ofdm.code_rate_LP = (reg[7] < 6) ? fe_code[reg[7]] : FEC_NONE;
+
+ return 0;
+}
+
+static int it913x_fe_set_frontend(struct dvb_frontend *fe,
+ struct dvb_frontend_parameters *p)
+{
+ struct it913x_fe_state *state = fe->demodulator_priv;
+ int ret, i;
+ u8 empty_ch, last_ch;
+
+ state->it913x_status = 0;
+
+ /* Set bw*/
+ ret = it913x_fe_select_bw(state, p->u.ofdm.bandwidth,
+ state->adcFrequency);
+
+ /* Training Mode Off */
+ ret = it913x_write_reg(state, PRO_LINK, TRAINING_MODE, 0x0);
+
+ /* Clear Empty Channel */
+ ret = it913x_write_reg(state, PRO_DMOD, EMPTY_CHANNEL_STATUS, 0x0);
+
+ /* Clear bits */
+ ret = it913x_write_reg(state, PRO_DMOD, MP2IF_SYNC_LK, 0x0);
+ /* LED on */
+ ret = it913x_write_reg(state, PRO_LINK, GPIOH3_O, 0x1);
+ /* Select Band*/
+ if ((p->frequency >= 51000000) && (p->frequency <= 230000000))
+ i = 0;
+ else if ((p->frequency >= 350000000) && (p->frequency <= 900000000))
+ i = 1;
+ else if ((p->frequency >= 1450000000) && (p->frequency <= 1680000000))
+ i = 2;
+ else
+ return -EOPNOTSUPP;
+
+ ret = it913x_write_reg(state, PRO_DMOD, FREE_BAND, i);
+
+ deb_info("Frontend Set Tuner Type %02x", state->tuner_type);
+ switch (state->tuner_type) {
+ case IT9137: /* Tuner type 0x38 */
+ ret = it9137_set_tuner(state,
+ p->u.ofdm.bandwidth, p->frequency);
+ break;
+ default:
+ if (fe->ops.tuner_ops.set_params) {
+ fe->ops.tuner_ops.set_params(fe, p);
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 0);
+ }
+ break;
+ }
+ /* LED off */
+ ret = it913x_write_reg(state, PRO_LINK, GPIOH3_O, 0x0);
+ /* Trigger ofsm */
+ ret = it913x_write_reg(state, PRO_DMOD, TRIGGER_OFSM, 0x0);
+ last_ch = 2;
+ for (i = 0; i < 40; ++i) {
+ empty_ch = it913x_read_reg_u8(state, EMPTY_CHANNEL_STATUS);
+ if (last_ch == 1 && empty_ch == 1)
+ break;
+ if (last_ch == 2 && empty_ch == 2)
+ return 0;
+ last_ch = empty_ch;
+ msleep(25);
+ }
+ for (i = 0; i < 40; ++i) {
+ if (it913x_read_reg_u8(state, D_TPSD_LOCK) == 1)
+ break;
+ msleep(25);
+ }
+
+ state->frequency = p->frequency;
+ return 0;
+}
+
+static int it913x_fe_suspend(struct it913x_fe_state *state)
+{
+ int ret, i;
+ u8 b;
+
+ ret = it913x_write_reg(state, PRO_DMOD, SUSPEND_FLAG, 0x1);
+
+ ret |= it913x_write_reg(state, PRO_DMOD, TRIGGER_OFSM, 0x0);
+
+ for (i = 0; i < 128; i++) {
+ ret = it913x_read_reg(state, SUSPEND_FLAG, &b, 1);
+ if (ret < 0)
+ return -ENODEV;
+ if (b == 0)
+ break;
+
+ }
+
+ ret |= it913x_write_reg(state, PRO_DMOD, AFE_MEM0, 0x8);
+ /* Turn LED off */
+ ret |= it913x_write_reg(state, PRO_LINK, GPIOH3_O, 0x0);
+
+ ret |= it913x_fe_script_loader(state, it9137_tuner_off);
+
+ return (ret < 0) ? -ENODEV : 0;
+}
+
+/* Power sequence */
+/* Power Up Tuner on -> Frontend suspend off -> Tuner clk on */
+/* Power Down Frontend suspend on -> Tuner clk off -> Tuner off */
+
+static int it913x_fe_sleep(struct dvb_frontend *fe)
+{
+ struct it913x_fe_state *state = fe->demodulator_priv;
+ return it913x_fe_suspend(state);
+}
+
+static u32 compute_div(u32 a, u32 b, u32 x)
+{
+ u32 res = 0;
+ u32 c = 0;
+ u32 i = 0;
+
+ if (a > b) {
+ c = a / b;
+ a = a - c * b;
+ }
+
+ for (i = 0; i < x; i++) {
+ if (a >= b) {
+ res += 1;
+ a -= b;
+ }
+ a <<= 1;
+ res <<= 1;
+ }
+
+ res = (c << x) + res;
+
+ return res;
+}
+
+static int it913x_fe_start(struct it913x_fe_state *state)
+{
+ struct it913xset *set_fe;
+ struct it913xset *set_mode;
+ int ret;
+ u8 adf = (state->adf & 0xf);
+ u32 adc, xtal;
+ u8 b[4];
+
+ ret = it913x_init_tuner(state);
+
+ if (adf < 12) {
+ state->crystalFrequency = fe_clockTable[adf].xtal ;
+ state->table = fe_clockTable[adf].table;
+ state->adcFrequency = state->table->adcFrequency;
+
+ adc = compute_div(state->adcFrequency, 1000000ul, 19ul);
+ xtal = compute_div(state->crystalFrequency, 1000000ul, 19ul);
+
+ } else
+ return -EINVAL;
+
+ deb_info("Xtal Freq :%d Adc Freq :%d Adc %08x Xtal %08x",
+ state->crystalFrequency, state->adcFrequency, adc, xtal);
+
+ /* Set LED indicator on GPIOH3 */
+ ret = it913x_write_reg(state, PRO_LINK, GPIOH3_EN, 0x1);
+ ret |= it913x_write_reg(state, PRO_LINK, GPIOH3_ON, 0x1);
+ ret |= it913x_write_reg(state, PRO_LINK, GPIOH3_O, 0x1);
+
+ ret |= it913x_write_reg(state, PRO_LINK, 0xf641, state->tuner_type);
+ ret |= it913x_write_reg(state, PRO_DMOD, 0xf5ca, 0x01);
+ ret |= it913x_write_reg(state, PRO_DMOD, 0xf715, 0x01);
+
+ b[0] = xtal & 0xff;
+ b[1] = (xtal >> 8) & 0xff;
+ b[2] = (xtal >> 16) & 0xff;
+ b[3] = (xtal >> 24);
+ ret |= it913x_write(state, PRO_DMOD, XTAL_CLK, b , 4);
+
+ b[0] = adc & 0xff;
+ b[1] = (adc >> 8) & 0xff;
+ b[2] = (adc >> 16) & 0xff;
+ ret |= it913x_write(state, PRO_DMOD, ADC_FREQ, b, 3);
+
+ switch (state->tuner_type) {
+ case IT9137: /* Tuner type 0x38 */
+ set_fe = it9137_set;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* set the demod */
+ ret = it913x_fe_script_loader(state, set_fe);
+ /* Always solo frontend */
+ set_mode = set_solo_fe;
+ ret |= it913x_fe_script_loader(state, set_mode);
+
+ ret |= it913x_fe_suspend(state);
+ return 0;
+}
+
+static int it913x_fe_init(struct dvb_frontend *fe)
+{
+ struct it913x_fe_state *state = fe->demodulator_priv;
+ int ret = 0;
+ /* Power Up Tuner - common all versions */
+ ret = it913x_write_reg(state, PRO_DMOD, 0xec40, 0x1);
+
+ ret |= it913x_write_reg(state, PRO_DMOD, AFE_MEM0, 0x0);
+
+ ret |= it913x_fe_script_loader(state, init_1);
+
+ switch (state->tuner_type) {
+ case IT9137:
+ ret |= it913x_write_reg(state, PRO_DMOD, 0xfba8, 0x0);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return (ret < 0) ? -ENODEV : 0;
+}
+
+static void it913x_fe_release(struct dvb_frontend *fe)
+{
+ struct it913x_fe_state *state = fe->demodulator_priv;
+ kfree(state);
+}
+
+static struct dvb_frontend_ops it913x_fe_ofdm_ops;
+
+struct dvb_frontend *it913x_fe_attach(struct i2c_adapter *i2c_adap,
+ u8 i2c_addr, u8 adf, u8 type)
+{
+ struct it913x_fe_state *state = NULL;
+ int ret;
+ /* allocate memory for the internal state */
+ state = kzalloc(sizeof(struct it913x_fe_state), GFP_KERNEL);
+ if (state == NULL)
+ goto error;
+
+ state->i2c_adap = i2c_adap;
+ state->i2c_addr = i2c_addr;
+ state->adf = adf;
+ state->tuner_type = type;
+
+ ret = it913x_fe_start(state);
+ if (ret < 0)
+ goto error;
+
+
+ /* create dvb_frontend */
+ memcpy(&state->frontend.ops, &it913x_fe_ofdm_ops,
+ sizeof(struct dvb_frontend_ops));
+ state->frontend.demodulator_priv = state;
+
+ return &state->frontend;
+error:
+ kfree(state);
+ return NULL;
+}
+EXPORT_SYMBOL(it913x_fe_attach);
+
+static struct dvb_frontend_ops it913x_fe_ofdm_ops = {
+
+ .info = {
+ .name = "it913x-fe DVB-T",
+ .type = FE_OFDM,
+ .frequency_min = 51000000,
+ .frequency_max = 1680000000,
+ .frequency_stepsize = 62500,
+ .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
+ FE_CAN_FEC_4_5 | FE_CAN_FEC_5_6 | FE_CAN_FEC_6_7 |
+ FE_CAN_FEC_7_8 | FE_CAN_FEC_8_9 | FE_CAN_FEC_AUTO |
+ FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
+ FE_CAN_TRANSMISSION_MODE_AUTO |
+ FE_CAN_GUARD_INTERVAL_AUTO |
+ FE_CAN_HIERARCHY_AUTO,
+ },
+
+ .release = it913x_fe_release,
+
+ .init = it913x_fe_init,
+ .sleep = it913x_fe_sleep,
+
+ .set_frontend = it913x_fe_set_frontend,
+ .get_frontend = it913x_fe_get_frontend,
+
+ .read_status = it913x_fe_read_status,
+ .read_signal_strength = it913x_fe_read_signal_strength,
+ .read_snr = it913x_fe_read_snr,
+ .read_ber = it913x_fe_read_ber,
+ .read_ucblocks = it913x_fe_read_ucblocks,
+};
+
+MODULE_DESCRIPTION("it913x Frontend and it9137 tuner");
+MODULE_AUTHOR("Malcolm Priestley tvboxspy@gmail.com");
+MODULE_VERSION("1.07");
+MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-22 14:55:18 +0000