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linux_dsm_epyc7002/drivers/media/dvb-frontends/itd1000.c
Mauro Carvalho Chehab a3f90c75b8 media: dvb: convert tuner_info frequencies to Hz 
Right now, satellite tuner drivers specify frequencies in kHz,
while terrestrial/cable ones specify in Hz. That's confusing
for developers.

However, the main problem is that universal tuners capable
of handling both satellite and non-satelite delivery systems
are appearing. We end by needing to hack the drivers in
order to support such hybrid tuners.

So, convert everything to specify tuner frequencies in Hz.

Plese notice that a similar patch is also needed for frontends.

Tested-by: Katsuhiro Suzuki <suzuki.katsuhiro@socionext.com>
Acked-by: Michael Büsch <m@bues.ch>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-08-02 16:14:50 -04:00

407 lines
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/*
* 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.
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/delay.h>
#include <linux/dvb/frontend.h>
#include <linux/i2c.h>
#include <linux/slab.h>
#include <media/dvb_frontend.h>
#include "itd1000.h"
#include "itd1000_priv.h"
/* Max transfer size done by I2C transfer functions */
#define MAX_XFER_SIZE 64
static int debug;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off).");
#define itd_dbg(args...) do { \
if (debug) { \
printk(KERN_DEBUG "ITD1000: " args);\
} \
} while (0)
#define itd_warn(args...) do { \
printk(KERN_WARNING "ITD1000: " args); \
} while (0)
#define itd_info(args...) do { \
printk(KERN_INFO "ITD1000: " args); \
} 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[MAX_XFER_SIZE];
struct i2c_msg msg = {
.addr = state->cfg->i2c_address, .flags = 0, .buf = buf, .len = len+1
};
if (1 + len > sizeof(buf)) {
printk(KERN_WARNING
"itd1000: i2c wr reg=%04x: len=%d is too big!\n",
reg, len);
return -EINVAL;
}
buf[0] = reg;
memcpy(&buf[1], v, len);
/* itd_dbg("wr %02x: %02x\n", 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 = &reg, .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) {
itd_warn("itd1000 I2C read failed\n");
return -EREMOTEIO;
}
return val;
}
static inline int itd1000_write_reg(struct itd1000_state *state, u8 r, u8 v)
{
u8 tmp = v; /* see gcc.gnu.org/bugzilla/show_bug.cgi?id=81715 */
int ret = itd1000_write_regs(state, r, &tmp, 1);
state->shadow[r] = tmp;
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;
itd_dbg("symbol_rate = %d\n", 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) {
itd_dbg("symrate: index: %d pgaext: %x, bbgvmin: %x\n", 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;
itd_dbg("VCO: %dkHz: %d -> ADCOUT: %d %02x\n", 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;
}
}
}
static const 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;
itd_dbg("frequency: %dkHz (wanted) %dkHz (set), PLLF = %d, PLLN = %d\n", 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) {
itd_dbg("fre_values: %d\n", 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 dtv_frontend_properties *c = &fe->dtv_property_cache;
struct itd1000_state *state = fe->tuner_priv;
u8 pllcon1;
itd1000_set_lo(state, c->frequency);
itd1000_set_lpf_bw(state, c->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 void itd1000_release(struct dvb_frontend *fe)
{
kfree(fe->tuner_priv);
fe->tuner_priv = NULL;
}
static const struct dvb_tuner_ops itd1000_tuner_ops = {
.info = {
.name = "Integrant ITD1000",
.frequency_min_hz = 950 * MHz,
.frequency_max_hz = 2150 * MHz,
.frequency_step_hz = 125 * kHz,
},
.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;
}
itd_info("successfully identified (ID: %d)\n", 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");
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