--- /dev/null
+/*
+ * Driver for the Integrant ITD1000 "Zero-IF Tuner IC for Direct Broadcast Satellite"
+ *
+ * Copyright (c) 2007-8 Patrick Boettcher <pb@linuxtv.org>
+ *
+ * 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/moduleparam.h>
+#include <linux/delay.h>
+#include <linux/dvb/frontend.h>
+#include <linux/i2c.h>
+
+#include "dvb_frontend.h"
+
+#include "itd1000.h"
+#include "itd1000_priv.h"
+
+static int debug;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off).");
+
+#define deb(args...) do { \
+ if (debug) { \
+ printk(KERN_DEBUG "ITD1000: " args);\
+ printk("\n"); \
+ } \
+} while (0)
+
+#define warn(args...) do { \
+ printk(KERN_WARNING "ITD1000: " args); \
+ printk("\n"); \
+} while (0)
+
+#define info(args...) do { \
+ printk(KERN_INFO "ITD1000: " args); \
+ printk("\n"); \
+} while (0)
+
+/* don't write more than one byte with flexcop behind */
+static int itd1000_write_regs(struct itd1000_state *state, u8 reg, u8 v[], u8 len)
+{
+ u8 buf[1+len];
+ struct i2c_msg msg = {
+ .addr = state->cfg->i2c_address, .flags = 0, .buf = buf, .len = len+1
+ };
+ buf[0] = reg;
+ memcpy(&buf[1], v, len);
+
+ /* deb("wr %02x: %02x", reg, v[0]); */
+
+ if (i2c_transfer(state->i2c, &msg, 1) != 1) {
+ printk(KERN_WARNING "itd1000 I2C write failed\n");
+ return -EREMOTEIO;
+ }
+ return 0;
+}
+
+static int itd1000_read_reg(struct itd1000_state *state, u8 reg)
+{
+ u8 val;
+ struct i2c_msg msg[2] = {
+ { .addr = state->cfg->i2c_address, .flags = 0, .buf = ®, .len = 1 },
+ { .addr = state->cfg->i2c_address, .flags = I2C_M_RD, .buf = &val, .len = 1 },
+ };
+
+ /* ugly flexcop workaround */
+ itd1000_write_regs(state, (reg - 1) & 0xff, &state->shadow[(reg - 1) & 0xff], 1);
+
+ if (i2c_transfer(state->i2c, msg, 2) != 2) {
+ warn("itd1000 I2C read failed");
+ return -EREMOTEIO;
+ }
+ return val;
+}
+
+static inline int itd1000_write_reg(struct itd1000_state *state, u8 r, u8 v)
+{
+ int ret = itd1000_write_regs(state, r, &v, 1);
+ state->shadow[r] = v;
+ return ret;
+}
+
+
+static struct {
+ u32 symbol_rate;
+ u8 pgaext : 4; /* PLLFH */
+ u8 bbgvmin : 4; /* BBGVMIN */
+} itd1000_lpf_pga[] = {
+ { 0, 0x8, 0x3 },
+ { 5200000, 0x8, 0x3 },
+ { 12200000, 0x4, 0x3 },
+ { 15400000, 0x2, 0x3 },
+ { 19800000, 0x2, 0x3 },
+ { 21500000, 0x2, 0x3 },
+ { 24500000, 0x2, 0x3 },
+ { 28400000, 0x2, 0x3 },
+ { 33400000, 0x2, 0x3 },
+ { 34400000, 0x1, 0x4 },
+ { 34400000, 0x1, 0x4 },
+ { 38400000, 0x1, 0x4 },
+ { 38400000, 0x1, 0x4 },
+ { 40400000, 0x1, 0x4 },
+ { 45400000, 0x1, 0x4 },
+};
+
+static void itd1000_set_lpf_bw(struct itd1000_state *state, u32 symbol_rate)
+{
+ u8 i;
+ u8 con1 = itd1000_read_reg(state, CON1) & 0xfd;
+ u8 pllfh = itd1000_read_reg(state, PLLFH) & 0x0f;
+ u8 bbgvmin = itd1000_read_reg(state, BBGVMIN) & 0xf0;
+ u8 bw = itd1000_read_reg(state, BW) & 0xf0;
+
+ deb("symbol_rate = %d", symbol_rate);
+
+ /* not sure what is that ? - starting to download the table */
+ itd1000_write_reg(state, CON1, con1 | (1 << 1));
+
+ for (i = 0; i < ARRAY_SIZE(itd1000_lpf_pga); i++)
+ if (symbol_rate < itd1000_lpf_pga[i].symbol_rate) {
+ deb("symrate: index: %d pgaext: %x, bbgvmin: %x", i, itd1000_lpf_pga[i].pgaext, itd1000_lpf_pga[i].bbgvmin);
+ itd1000_write_reg(state, PLLFH, pllfh | (itd1000_lpf_pga[i].pgaext << 4));
+ itd1000_write_reg(state, BBGVMIN, bbgvmin | (itd1000_lpf_pga[i].bbgvmin));
+ itd1000_write_reg(state, BW, bw | (i & 0x0f));
+ break;
+ }
+
+ itd1000_write_reg(state, CON1, con1 | (0 << 1));
+}
+
+static struct {
+ u8 vcorg;
+ u32 fmax_rg;
+} itd1000_vcorg[] = {
+ { 1, 920000 },
+ { 2, 971000 },
+ { 3, 1031000 },
+ { 4, 1091000 },
+ { 5, 1171000 },
+ { 6, 1281000 },
+ { 7, 1381000 },
+ { 8, 500000 }, /* this is intentional. */
+ { 9, 1451000 },
+ { 10, 1531000 },
+ { 11, 1631000 },
+ { 12, 1741000 },
+ { 13, 1891000 },
+ { 14, 2071000 },
+ { 15, 2250000 },
+};
+
+static void itd1000_set_vco(struct itd1000_state *state, u32 freq_khz)
+{
+ u8 i;
+ u8 gvbb_i2c = itd1000_read_reg(state, GVBB_I2C) & 0xbf;
+ u8 vco_chp1_i2c = itd1000_read_reg(state, VCO_CHP1_I2C) & 0x0f;
+ u8 adcout;
+
+ /* reserved bit again (reset ?) */
+ itd1000_write_reg(state, GVBB_I2C, gvbb_i2c | (1 << 6));
+
+ for (i = 0; i < ARRAY_SIZE(itd1000_vcorg); i++) {
+ if (freq_khz < itd1000_vcorg[i].fmax_rg) {
+ itd1000_write_reg(state, VCO_CHP1_I2C, vco_chp1_i2c | (itd1000_vcorg[i].vcorg << 4));
+ msleep(1);
+
+ adcout = itd1000_read_reg(state, PLLLOCK) & 0x0f;
+
+ deb("VCO: %dkHz: %d -> ADCOUT: %d %02x", freq_khz, itd1000_vcorg[i].vcorg, adcout, vco_chp1_i2c);
+
+ if (adcout > 13) {
+ if (!(itd1000_vcorg[i].vcorg == 7 || itd1000_vcorg[i].vcorg == 15))
+ itd1000_write_reg(state, VCO_CHP1_I2C, vco_chp1_i2c | ((itd1000_vcorg[i].vcorg + 1) << 4));
+ } else if (adcout < 2) {
+ if (!(itd1000_vcorg[i].vcorg == 1 || itd1000_vcorg[i].vcorg == 9))
+ itd1000_write_reg(state, VCO_CHP1_I2C, vco_chp1_i2c | ((itd1000_vcorg[i].vcorg - 1) << 4));
+ }
+ break;
+ }
+ }
+}
+
+struct {
+ u32 freq;
+ u8 values[10]; /* RFTR, RFST1 - RFST9 */
+} itd1000_fre_values[] = {
+ { 1075000, { 0x59, 0x1d, 0x1c, 0x17, 0x16, 0x0f, 0x0e, 0x0c, 0x0b, 0x0a } },
+ { 1250000, { 0x89, 0x1e, 0x1d, 0x17, 0x15, 0x0f, 0x0e, 0x0c, 0x0b, 0x0a } },
+ { 1450000, { 0x89, 0x1e, 0x1d, 0x17, 0x15, 0x0f, 0x0e, 0x0c, 0x0b, 0x0a } },
+ { 1650000, { 0x69, 0x1e, 0x1d, 0x17, 0x15, 0x0f, 0x0e, 0x0c, 0x0b, 0x0a } },
+ { 1750000, { 0x69, 0x1e, 0x17, 0x15, 0x14, 0x0f, 0x0e, 0x0c, 0x0b, 0x0a } },
+ { 1850000, { 0x69, 0x1d, 0x17, 0x16, 0x14, 0x0f, 0x0e, 0x0d, 0x0b, 0x0a } },
+ { 1900000, { 0x69, 0x1d, 0x17, 0x15, 0x14, 0x0f, 0x0e, 0x0d, 0x0b, 0x0a } },
+ { 1950000, { 0x69, 0x1d, 0x17, 0x16, 0x14, 0x13, 0x0e, 0x0d, 0x0b, 0x0a } },
+ { 2050000, { 0x69, 0x1e, 0x1d, 0x17, 0x16, 0x14, 0x13, 0x0e, 0x0b, 0x0a } },
+ { 2150000, { 0x69, 0x1d, 0x1c, 0x17, 0x15, 0x14, 0x13, 0x0f, 0x0e, 0x0b } }
+};
+
+
+#define FREF 16
+
+static void itd1000_set_lo(struct itd1000_state *state, u32 freq_khz)
+{
+ int i, j;
+ u32 plln, pllf;
+ u64 tmp;
+
+ plln = (freq_khz * 1000) / 2 / FREF;
+
+ /* Compute the factional part times 1000 */
+ tmp = plln % 1000000;
+ plln /= 1000000;
+
+ tmp *= 1048576;
+ do_div(tmp, 1000000);
+ pllf = (u32) tmp;
+
+ state->frequency = ((plln * 1000) + (pllf * 1000)/1048576) * 2*FREF;
+ deb("frequency: %dkHz (wanted) %dkHz (set), PLLF = %d, PLLN = %d", freq_khz, state->frequency, pllf, plln);
+
+ itd1000_write_reg(state, PLLNH, 0x80); /* PLLNH */;
+ itd1000_write_reg(state, PLLNL, plln & 0xff);
+ itd1000_write_reg(state, PLLFH, (itd1000_read_reg(state, PLLFH) & 0xf0) | ((pllf >> 16) & 0x0f));
+ itd1000_write_reg(state, PLLFM, (pllf >> 8) & 0xff);
+ itd1000_write_reg(state, PLLFL, (pllf >> 0) & 0xff);
+
+ for (i = 0; i < ARRAY_SIZE(itd1000_fre_values); i++) {
+ if (freq_khz <= itd1000_fre_values[i].freq) {
+ deb("fre_values: %d", i);
+ itd1000_write_reg(state, RFTR, itd1000_fre_values[i].values[0]);
+ for (j = 0; j < 9; j++)
+ itd1000_write_reg(state, RFST1+j, itd1000_fre_values[i].values[j+1]);
+ break;
+ }
+ }
+
+ itd1000_set_vco(state, freq_khz);
+}
+
+static int itd1000_set_parameters(struct dvb_frontend *fe, struct dvb_frontend_parameters *p)
+{
+ struct itd1000_state *state = fe->tuner_priv;
+ u8 pllcon1;
+
+ itd1000_set_lo(state, p->frequency);
+ itd1000_set_lpf_bw(state, p->u.qpsk.symbol_rate);
+
+ pllcon1 = itd1000_read_reg(state, PLLCON1) & 0x7f;
+ itd1000_write_reg(state, PLLCON1, pllcon1 | (1 << 7));
+ itd1000_write_reg(state, PLLCON1, pllcon1);
+
+ return 0;
+}
+
+static int itd1000_get_frequency(struct dvb_frontend *fe, u32 *frequency)
+{
+ struct itd1000_state *state = fe->tuner_priv;
+ *frequency = state->frequency;
+ return 0;
+}
+
+static int itd1000_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
+{
+ return 0;
+}
+
+static u8 itd1000_init_tab[][2] = {
+ { PLLCON1, 0x65 }, /* Register does not change */
+ { PLLNH, 0x80 }, /* Bits [7:6] do not change */
+ { RESERVED_0X6D, 0x3b },
+ { VCO_CHP2_I2C, 0x12 },
+ { 0x72, 0xf9 }, /* No such regsister defined */
+ { RESERVED_0X73, 0xff },
+ { RESERVED_0X74, 0xb2 },
+ { RESERVED_0X75, 0xc7 },
+ { EXTGVBBRF, 0xf0 },
+ { DIVAGCCK, 0x80 },
+ { BBTR, 0xa0 },
+ { RESERVED_0X7E, 0x4f },
+ { 0x82, 0x88 }, /* No such regsister defined */
+ { 0x83, 0x80 }, /* No such regsister defined */
+ { 0x84, 0x80 }, /* No such regsister defined */
+ { RESERVED_0X85, 0x74 },
+ { RESERVED_0X86, 0xff },
+ { RESERVED_0X88, 0x02 },
+ { RESERVED_0X89, 0x16 },
+ { RFST0, 0x1f },
+ { RESERVED_0X94, 0x66 },
+ { RESERVED_0X95, 0x66 },
+ { RESERVED_0X96, 0x77 },
+ { RESERVED_0X97, 0x99 },
+ { RESERVED_0X98, 0xff },
+ { RESERVED_0X99, 0xfc },
+ { RESERVED_0X9A, 0xba },
+ { RESERVED_0X9B, 0xaa },
+};
+
+static u8 itd1000_reinit_tab[][2] = {
+ { VCO_CHP1_I2C, 0x8a },
+ { BW, 0x87 },
+ { GVBB_I2C, 0x03 },
+ { BBGVMIN, 0x03 },
+ { CON1, 0x2e },
+};
+
+
+static int itd1000_init(struct dvb_frontend *fe)
+{
+ struct itd1000_state *state = fe->tuner_priv;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(itd1000_init_tab); i++)
+ itd1000_write_reg(state, itd1000_init_tab[i][0], itd1000_init_tab[i][1]);
+
+ for (i = 0; i < ARRAY_SIZE(itd1000_reinit_tab); i++)
+ itd1000_write_reg(state, itd1000_reinit_tab[i][0], itd1000_reinit_tab[i][1]);
+
+ return 0;
+}
+
+static int itd1000_sleep(struct dvb_frontend *fe)
+{
+ return 0;
+}
+
+static int itd1000_release(struct dvb_frontend *fe)
+{
+ kfree(fe->tuner_priv);
+ fe->tuner_priv = NULL;
+ return 0;
+}
+
+static const struct dvb_tuner_ops itd1000_tuner_ops = {
+ .info = {
+ .name = "Integrant ITD1000",
+ .frequency_min = 950000,
+ .frequency_max = 2150000,
+ .frequency_step = 125, /* kHz for QPSK frontends */
+ },
+
+ .release = itd1000_release,
+
+ .init = itd1000_init,
+ .sleep = itd1000_sleep,
+
+ .set_params = itd1000_set_parameters,
+ .get_frequency = itd1000_get_frequency,
+ .get_bandwidth = itd1000_get_bandwidth
+};
+
+
+struct dvb_frontend *itd1000_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c, struct itd1000_config *cfg)
+{
+ struct itd1000_state *state = NULL;
+ u8 i = 0;
+
+ state = kzalloc(sizeof(struct itd1000_state), GFP_KERNEL);
+ if (state == NULL)
+ return NULL;
+
+ state->cfg = cfg;
+ state->i2c = i2c;
+
+ i = itd1000_read_reg(state, 0);
+ if (i != 0) {
+ kfree(state);
+ return NULL;
+ }
+ info("successfully identified (ID: %d)", i);
+
+ memset(state->shadow, 0xff, sizeof(state->shadow));
+ for (i = 0x65; i < 0x9c; i++)
+ state->shadow[i] = itd1000_read_reg(state, i);
+
+ memcpy(&fe->ops.tuner_ops, &itd1000_tuner_ops, sizeof(struct dvb_tuner_ops));
+
+ fe->tuner_priv = state;
+
+ return fe;
+}
+EXPORT_SYMBOL(itd1000_attach);
+
+MODULE_AUTHOR("Patrick Boettcher <pb@linuxtv.org>");
+MODULE_DESCRIPTION("Integrant ITD1000 driver");
+MODULE_LICENSE("GPL");
projects / openwrt / staging / blogic.git / commitdiff