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isdb2056_device.c
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// SPDX-License-Identifier: GPL-2.0-only
/*
* PTX driver for Digibest ISDB2056 device (isdb2056_device.c)
*
* Copyright (c) 2018-2021 nns779
*/
#include "print_format.h"
#include "isdb2056_device.h"
#include <linux/kernel.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include "px4_device_params.h"
#include "firmware.h"
#define ISDB2056_DEVICE_TS_SYNC_COUNT 4
#define ISDB2056_DEVICE_TS_SYNC_SIZE (188 * ISDB2056_DEVICE_TS_SYNC_COUNT)
struct isdb2056_stream_context {
struct ptx_chrdev *chrdev;
u8 remain_buf[ISDB2056_DEVICE_TS_SYNC_SIZE];
size_t remain_len;
};
static void isdb2056_device_release(struct kref *kref);
static int isdb2056_backend_set_power(struct isdb2056_device *isdb2056,
bool state)
{
int ret = 0;
struct it930x_bridge *it930x = &isdb2056->it930x;
dev_dbg(isdb2056->dev,
"isdb2056_backend_set_power: %s\n", (state) ? "true" : "false");
if (!state && !atomic_read(&isdb2056->available))
return 0;
if (state) {
ret = it930x_write_gpio(it930x, 3, false);
if (ret)
return ret;
msleep(100);
ret = it930x_write_gpio(it930x, 2, true);
if (ret)
return ret;
msleep(20);
} else {
it930x_write_gpio(it930x, 2, false);
it930x_write_gpio(it930x, 3, true);
}
return 0;
}
static int isdb2056_backend_init(struct isdb2056_device *isdb2056)
{
int ret = 0;
struct isdb2056_chrdev *chrdev2056 = &isdb2056->chrdev2056;
ret = tc90522_init(&chrdev2056->tc90522_t);
if (ret) {
dev_err(isdb2056->dev,
"isdb2056_backend_init: tc90522_init() (t) failed. (ret: %d)\n",
ret);
return ret;
}
ret = tc90522_init(&chrdev2056->tc90522_s);
if (ret) {
dev_err(isdb2056->dev,
"isdb2056_backend_init: tc90522_init() (s) failed. (ret: %d)\n",
ret);
return ret;
}
if (isdb2056->isdb2056_model == ISDB2056N_MODEL) {
ret = tc90522_init(&chrdev2056->tc90522_s0);
if (ret) {
dev_err(isdb2056->dev,
"isdb2056_backend_init: tc90522_init() (s0) failed. (ret: %d)\n",
ret);
return ret;
}
}
ret = r850_init(&chrdev2056->r850);
if (ret) {
dev_err(isdb2056->dev,
"isdb2056_backend_init: r850_init() failed. (ret: %d)\n",
ret);
return ret;
}
ret = rt710_init(&chrdev2056->rt710);
if (ret) {
dev_err(isdb2056->dev,
"isdb2056_backend_init: rt710_init() failed. (ret: %d)\n",
ret);
return ret;
}
return 0;
}
static int isdb2056_backend_term(struct isdb2056_device *isdb2056)
{
struct isdb2056_chrdev *chrdev2056 = &isdb2056->chrdev2056;
r850_term(&chrdev2056->r850);
rt710_term(&chrdev2056->rt710);
tc90522_term(&chrdev2056->tc90522_t);
tc90522_term(&chrdev2056->tc90522_s);
if (isdb2056->isdb2056_model == ISDB2056N_MODEL)
tc90522_term(&chrdev2056->tc90522_s0);
return 0;
}
static void isdb2056_device_stream_process(struct ptx_chrdev *chrdev,
u8 **buf, u32 *len)
{
u8 *p = *buf;
u32 remain = *len;
while (likely(remain)) {
u32 i = 0;
bool sync_remain = false;
while (true) {
if (likely(((i + 1) * 188) <= remain)) {
if (unlikely(p[i * 188] != 0x47))
break;
} else {
sync_remain = true;
break;
}
i++;
}
if (unlikely(i < ISDB2056_DEVICE_TS_SYNC_COUNT)) {
p++;
remain--;
continue;
}
ptx_chrdev_put_stream(chrdev, p, 188 * i);
p += 188 * i;
remain -= 188 * i;
if (unlikely(sync_remain))
break;
}
*buf = p;
*len = remain;
return;
}
static int isdb2056_device_stream_handler(void *context, void *buf, u32 len)
{
struct isdb2056_stream_context *stream_ctx = context;
u8 *ctx_remain_buf = stream_ctx->remain_buf;
u32 ctx_remain_len = stream_ctx->remain_len;
u8 *p = buf;
u32 remain = len;
if (unlikely(ctx_remain_len)) {
if (likely((ctx_remain_len + len) >= ISDB2056_DEVICE_TS_SYNC_SIZE)) {
u32 t = ISDB2056_DEVICE_TS_SYNC_SIZE - ctx_remain_len;
memcpy(ctx_remain_buf + ctx_remain_len, p, t);
ctx_remain_len = ISDB2056_DEVICE_TS_SYNC_SIZE;
isdb2056_device_stream_process(stream_ctx->chrdev,
&ctx_remain_buf,
&ctx_remain_len);
if (likely(!ctx_remain_len)) {
p += t;
remain -= t;
}
stream_ctx->remain_len = 0;
} else {
memcpy(ctx_remain_buf + ctx_remain_len, p, len);
stream_ctx->remain_len += len;
return 0;
}
}
isdb2056_device_stream_process(stream_ctx->chrdev, &p, &remain);
if (unlikely(remain)) {
memcpy(stream_ctx->remain_buf, p, remain);
stream_ctx->remain_len = remain;
}
return 0;
}
static int isdb2056_chrdev_init(struct ptx_chrdev *chrdev)
{
dev_dbg(chrdev->parent->dev, "isdb2056_chrdev_init\n");
chrdev->params.system = PTX_UNSPECIFIED_SYSTEM;
return 0;
}
static int isdb2056_chrdev_term(struct ptx_chrdev *chrdev)
{
dev_dbg(chrdev->parent->dev, "isdb2056_chrdev_term\n");
return 0;
}
static struct tc90522_regbuf tc_init_t[] = {
{ 0xb0, NULL, { 0xa0 } },
{ 0xb2, NULL, { 0x3d } },
{ 0xb3, NULL, { 0x25 } },
{ 0xb4, NULL, { 0x8b } },
{ 0xb5, NULL, { 0x4b } },
{ 0xb6, NULL, { 0x3f } },
{ 0xb7, NULL, { 0xff } },
{ 0xb8, NULL, { 0xc0 } },
};
static struct tc90522_regbuf tc_init_s[] = {
{ 0x15, NULL, { 0x00 } },
{ 0x1d, NULL, { 0x00 } },
};
static int isdb2056_chrdev_open(struct ptx_chrdev *chrdev)
{
int ret = 0;
struct ptx_chrdev_group *chrdev_group = chrdev->parent;
struct isdb2056_chrdev *chrdev2056 = chrdev->priv;
struct isdb2056_device *isdb2056 = container_of(chrdev2056,
struct isdb2056_device,
chrdev2056);
struct r850_system_config sys;
dev_dbg(isdb2056->dev,
"isdb2056_chrdev_open %u\n", chrdev_group->id);
ret = isdb2056_backend_set_power(isdb2056, true);
if (ret) {
dev_err(isdb2056->dev,
"isdb2056_chrdev_open %u: isdb2056_backend_set_power(true) failed. (ret: %d)\n",
chrdev_group->id, ret);
goto fail_backend_power;
}
ret = isdb2056_backend_init(isdb2056);
if (ret) {
dev_err(isdb2056->dev,
"isdb2056_chrdev_open %u: isdb2056_backend_init() failed. (ret: %d)\n",
chrdev_group->id, ret);
goto fail_backend_init;
}
/* Initialization for ISDB-T */
ret = tc90522_write_multiple_regs(&chrdev2056->tc90522_t,
tc_init_t, ARRAY_SIZE(tc_init_t));
if (ret) {
dev_err(isdb2056->dev,
"isdb2056_chrdev_open %u: tc90522_write_multiple_regs(tc_init_t) failed. (ret: %d)\n",
chrdev_group->id, ret);
goto fail_backend;
}
/* disable ts pins */
ret = tc90522_enable_ts_pins_t(&chrdev2056->tc90522_t, false);
if (ret) {
dev_err(isdb2056->dev,
"isdb2056_chrdev_open %u: tc90522_enable_ts_pins_t(false) failed. (ret: %d)\n",
chrdev_group->id, ret);
return ret;
}
/* sleep */
ret = tc90522_sleep_t(&chrdev2056->tc90522_t, true);
if (ret) {
dev_err(isdb2056->dev,
"isdb2056_chrdev_open %u: tc90522_sleep_t(true) failed. (ret: %d)\n",
chrdev_group->id, ret);
return ret;
}
sys.system = R850_SYSTEM_ISDB_T;
sys.bandwidth = R850_BANDWIDTH_6M;
sys.if_freq = 4063;
ret = r850_set_system(&chrdev2056->r850, &sys);
if (ret) {
dev_err(isdb2056->dev,
"isdb2056_chrdev_open %u: r850_set_system() failed. (ret: %d)\n",
chrdev_group->id, ret);
return ret;
}
/* Initialization for ISDB-S */
ret = tc90522_write_multiple_regs(&chrdev2056->tc90522_s,
tc_init_s, ARRAY_SIZE(tc_init_s));
if (ret) {
dev_err(isdb2056->dev,
"isdb2056_chrdev_open %u: tc90522_write_multiple_regs(tc_init_s) failed. (ret: %d)\n",
chrdev_group->id, ret);
return ret;
}
/* disable ts pins */
ret = tc90522_enable_ts_pins_s(&chrdev2056->tc90522_s, false);
if (ret) {
dev_err(isdb2056->dev,
"isdb2056_chrdev_open %u: tc90522_enable_ts_pins_s(false) failed. (ret: %d)\n",
chrdev_group->id, ret);
return ret;
}
/* sleep */
ret = tc90522_sleep_s(&chrdev2056->tc90522_s, true);
if (ret) {
dev_err(isdb2056->dev,
"isdb2056_chrdev_open %u: tc90522_sleep_s(true) failed. (ret: %d)\n",
chrdev_group->id, ret);
return ret;
}
kref_get(&isdb2056->kref);
return 0;
fail_backend:
isdb2056_backend_term(isdb2056);
fail_backend_init:
isdb2056_backend_set_power(isdb2056, false);
fail_backend_power:
return ret;
}
static int isdb2056_chrdev_release(struct ptx_chrdev *chrdev)
{
struct ptx_chrdev_group *chrdev_group = chrdev->parent;
struct isdb2056_chrdev *chrdev2056 = chrdev->priv;
struct isdb2056_device *isdb2056 = container_of(chrdev2056,
struct isdb2056_device,
chrdev2056);
dev_dbg(isdb2056->dev,
"isdb2056_chrdev_release %u: kref count: %u\n",
chrdev_group->id, kref_read(&isdb2056->kref));
isdb2056_backend_term(isdb2056);
isdb2056_backend_set_power(isdb2056, false);
kref_put(&isdb2056->kref, isdb2056_device_release);
return 0;
}
static int isdb2056_chrdev_tune(struct ptx_chrdev *chrdev,
struct ptx_tune_params *params)
{
int ret = 0, i;
struct ptx_chrdev_group *chrdev_group = chrdev->parent;
struct isdb2056_chrdev *chrdev2056 = chrdev->priv;
struct isdb2056_device *isdb2056 = container_of(chrdev2056,
struct isdb2056_device,
chrdev2056);
bool tuner_locked;
s32 ss;
dev_dbg(isdb2056->dev,
"isdb2056_chrdev_tune %u\n", chrdev_group->id);
switch (params->system) {
case PTX_ISDB_T_SYSTEM:
ret = tc90522_write_reg(&chrdev2056->tc90522_t, 0x47, 0x30);
if (ret)
break;
ret = tc90522_set_agc_t(&chrdev2056->tc90522_t, false);
if (ret) {
dev_err(isdb2056->dev,
"isdb2056_chrdev_tune %u: tc90522_set_agc_t(false) failed. (ret: %d)\n",
chrdev_group->id, ret);
break;
}
ret = tc90522_sleep_s(&chrdev2056->tc90522_s, true);
if (ret) {
dev_err(isdb2056->dev,
"isdb2056_chrdev_tune %u: tc90522_sleep_s(true) failed. (ret: %d)\n",
chrdev_group->id, ret);
break;
}
ret = tc90522_write_reg(&chrdev2056->tc90522_t, 0x0e, 0x77);
if (ret)
break;
ret = tc90522_write_reg(&chrdev2056->tc90522_t, 0x0f, 0x10);
if (ret)
break;
ret = tc90522_write_reg(&chrdev2056->tc90522_t, 0x71, 0x20);
if (ret)
break;
ret = tc90522_sleep_t(&chrdev2056->tc90522_t, false);
if (ret) {
dev_err(isdb2056->dev,
"isdb2056_chrdev_tune %u: tc90522_sleep_t(false) failed. (ret: %d)\n",
chrdev_group->id, ret);
break;
}
ret = tc90522_write_reg(&chrdev2056->tc90522_t, 0x76, 0x0c);
if (ret)
break;
ret = tc90522_write_reg(&chrdev2056->tc90522_t, 0x1f, 0x30);
if (ret)
break;
ret = r850_wakeup(&chrdev2056->r850);
if (ret) {
dev_err(isdb2056->dev,
"isdb2056_chrdev_tune %u: r850_wakeup() failed. (ret: %d)\n",
chrdev_group->id, ret);
break;
}
ret = r850_set_frequency(&chrdev2056->r850, params->freq);
if (ret) {
dev_err(isdb2056->dev,
"isdb2056_chrdev_tune %u: r850_set_frequency(%u) failed. (ret: %d)\n",
chrdev_group->id, params->freq, ret);
break;
}
i = 50;
while (i--) {
ret = r850_is_pll_locked(&chrdev2056->r850,
&tuner_locked);
if (!ret && tuner_locked)
break;
msleep(10);
}
if (ret) {
dev_err(isdb2056->dev,
"isdb2056_chrdev_tune %u: r850_is_pll_locked() failed. (ret: %d)\n",
chrdev_group->id, ret);
break;
} else if (!tuner_locked) {
/* PLL error */
dev_dbg(isdb2056->dev,
"isdb2056_chrdev_tune %u: PLL is NOT locked.\n",
chrdev_group->id);
ret = -EAGAIN;
break;
}
dev_dbg(isdb2056->dev,
"isdb2056_chrdev_tune %u: PLL is locked. count: %d\n",
chrdev_group->id, i);
ret = tc90522_set_agc_t(&chrdev2056->tc90522_t, true);
if (ret) {
dev_err(isdb2056->dev,
"isdb2056_chrdev_tune %u: tc90522_set_agc_t(true) failed. (ret: %d)\n",
chrdev_group->id, ret);
break;
}
ret = tc90522_write_reg(&chrdev2056->tc90522_t, 0x71, 0x01);
if (ret)
break;
ret = tc90522_write_reg(&chrdev2056->tc90522_t, 0x72, 0x25);
if (ret)
break;
ret = tc90522_write_reg(&chrdev2056->tc90522_t, 0x75, 0x00);
if (ret)
break;
msleep(100);
break;
case PTX_ISDB_S_SYSTEM:
ret = tc90522_set_agc_s(&chrdev2056->tc90522_s, false);
if (ret) {
dev_err(isdb2056->dev,
"isdb2056_chrdev_tune %u: tc90522_set_agc_s(false) failed. (ret: %d)\n",
chrdev_group->id, ret);
break;
}
ret = tc90522_write_reg(&chrdev2056->tc90522_t, 0x0e, 0x11);
if (ret)
break;
ret = tc90522_write_reg(&chrdev2056->tc90522_t, 0x0f, 0x70);
if (ret)
break;
ret = tc90522_sleep_t(&chrdev2056->tc90522_t, true);
if (ret) {
dev_err(isdb2056->dev,
"isdb2056_chrdev_tune %u: tc90522_sleep_t(true) failed. (ret: %d)\n",
chrdev_group->id, ret);
break;
}
switch (isdb2056->isdb2056_model) {
case ISDB2056_MODEL:
ret = tc90522_write_reg(&chrdev2056->tc90522_s, 0x07, 0x77);
break;
case ISDB2056N_MODEL:
ret = tc90522_write_reg(&chrdev2056->tc90522_s0, 0x07, 0x77);
break;
default:
dev_err(isdb2056->dev, "isdb2056_chrdev_tune: undefined model (model: %d)\n", isdb2056->isdb2056_model);
ret = -EINVAL;
break;
}
if (ret)
break;
switch (isdb2056->isdb2056_model) {
case ISDB2056_MODEL:
ret = tc90522_write_reg(&chrdev2056->tc90522_s, 0x08, 0x10);
break;
case ISDB2056N_MODEL:
ret = tc90522_write_reg(&chrdev2056->tc90522_s0, 0x08, 0x37);
break;
default:
dev_err(isdb2056->dev, "isdb2056_chrdev_tune: undefined model (model: %d)\n", isdb2056->isdb2056_model);
ret = -EINVAL;
break;
}
if (ret)
break;
ret = tc90522_sleep_s(&chrdev2056->tc90522_s, false);
if (ret) {
dev_err(isdb2056->dev,
"isdb2056_chrdev_tune %u: tc90522_sleep_s(false) failed. (ret: %d)\n",
chrdev_group->id, ret);
break;
}
ret = tc90522_write_reg(&chrdev2056->tc90522_s, 0x04, 0x02);
if (ret)
break;
ret = tc90522_write_reg(&chrdev2056->tc90522_s, 0x8e, 0x02);
if (ret)
break;
ret = tc90522_write_reg(&chrdev2056->tc90522_t, 0x1f, 0x20);
if (ret)
break;
ret = rt710_set_params(&chrdev2056->rt710,
params->freq, 28860, 4);
if (ret) {
dev_err(isdb2056->dev,
"isdb2056_chrdev_tune %u: rt710_set_params(%u, 28860, 4) failed. (ret: %d)\n",
chrdev_group->id, params->freq, ret);
break;
}
i = 50;
while (i--) {
ret = rt710_is_pll_locked(&chrdev2056->rt710,
&tuner_locked);
if (!ret && tuner_locked)
break;
msleep(10);
}
if (ret) {
dev_err(isdb2056->dev,
"isdb2056_chrdev_tune %u: rt710_is_pll_locked() failed. (ret: %d)\n",
chrdev_group->id, ret);
break;
} else if (!tuner_locked) {
/* PLL error */
dev_err(isdb2056->dev,
"isdb2056_chrdev_tune %u: PLL is NOT locked.\n",
chrdev_group->id);
ret = -EAGAIN;
break;
}
rt710_get_rf_signal_strength(&chrdev2056->rt710, &ss);
dev_dbg(isdb2056->dev,
"isdb2056_chrdev_tune %u: PLL is locked. count: %d, signal strength: %d.%03ddBm\n",
chrdev_group->id, i, ss / 1000, -ss % 1000);
ret = tc90522_set_agc_s(&chrdev2056->tc90522_s, true);
if (ret) {
dev_err(isdb2056->dev,
"isdb2056_chrdev_tune %u: tc90522_set_agc_s(true) failed. (ret: %d)\n",
chrdev_group->id, ret);
break;
}
break;
default:
ret = -EINVAL;
break;
}
return ret;
}
static int isdb2056_chrdev_check_lock(struct ptx_chrdev *chrdev, bool *locked)
{
int ret = 0;
struct isdb2056_chrdev *chrdev2056 = chrdev->priv;
switch (chrdev->current_system) {
case PTX_ISDB_T_SYSTEM:
ret = tc90522_is_signal_locked_t(&chrdev2056->tc90522_t,
locked);
break;
case PTX_ISDB_S_SYSTEM:
ret = tc90522_is_signal_locked_s(&chrdev2056->tc90522_s,
locked);
break;
default:
ret = -EINVAL;
break;
}
return ret;
}
static int isdb2056_chrdev_set_stream_id(struct ptx_chrdev *chrdev,
u16 stream_id)
{
int ret = 0, i;
struct ptx_chrdev_group *chrdev_group = chrdev->parent;
struct isdb2056_chrdev *chrdev2056 = chrdev->priv;
struct isdb2056_device *isdb2056 = container_of(chrdev2056,
struct isdb2056_device,
chrdev2056);
struct tc90522_demod *tc90522_s = &chrdev2056->tc90522_s;
u16 tsid, tsid2;
dev_dbg(isdb2056->dev,
"isdb2056_chrdev_set_stream_id %u\n", chrdev_group->id);
if (chrdev->current_system != PTX_ISDB_S_SYSTEM)
return -EINVAL;
if (stream_id < 12) {
i = 100;
while (i--) {
ret = tc90522_tmcc_get_tsid_s(tc90522_s,
stream_id, &tsid);
if ((!ret && tsid) || ret == -EINVAL)
break;
msleep(10);
}
if (ret) {
dev_err(isdb2056->dev,
"isdb2056_chrdev_set_stream_id_s %u: tc90522_tmcc_get_tsid_s() failed. (ret: %d)\n",
chrdev_group->id, ret);
return ret;
}
if (!tsid) {
ret = -EAGAIN;
return ret;
}
} else {
tsid = stream_id;
}
ret = tc90522_set_tsid_s(tc90522_s, tsid);
if (ret) {
dev_err(isdb2056->dev,
"isdb2056_chrdev_set_stream_id_s %u: tc90522_set_tsid_s(0x%x) failed. (ret: %d)\n",
chrdev_group->id, tsid, ret);
return ret;
}
/* check slot */
i = 100;
while(i--) {
ret = tc90522_get_tsid_s(tc90522_s, &tsid2);
if (!ret && tsid2 == tsid)
break;
msleep(10);
}
if (tsid2 != tsid)
ret = -EAGAIN;
return ret;
}
static int isdb2056_chrdev_start_capture(struct ptx_chrdev *chrdev)
{
int ret = 0;
struct ptx_chrdev_group *chrdev_group = chrdev->parent;
struct isdb2056_chrdev *chrdev2056 = chrdev->priv;
struct isdb2056_device *isdb2056 = container_of(chrdev2056,
struct isdb2056_device,
chrdev2056);
struct isdb2056_stream_context *stream_ctx = isdb2056->stream_ctx;
dev_dbg(isdb2056->dev,
"isdb2056_chrdev_start_capture %u\n", chrdev_group->id);
ret = it930x_purge_psb(&isdb2056->it930x,
px4_device_params.psb_purge_timeout);
if (ret) {
dev_err(isdb2056->dev,
"isdb2056_chrdev_start_capture %u: it930x_purge_psb() failed. (ret: %d)\n",
chrdev_group->id, ret);
goto fail;
}
switch (chrdev->current_system) {
case PTX_ISDB_T_SYSTEM:
ret = tc90522_enable_ts_pins_t(&chrdev2056->tc90522_t, true);
if (ret)
dev_err(isdb2056->dev,
"isdb2056_chrdev_start_capture %u: tc90522_enable_ts_pins_t(true) failed. (ret: %d)\n",
chrdev_group->id, ret);
break;
case PTX_ISDB_S_SYSTEM:
ret = tc90522_enable_ts_pins_s(&chrdev2056->tc90522_s, true);
if (ret)
dev_err(isdb2056->dev,
"isdb2056_chrdev_start_capture %u: tc90522_enable_ts_pins_s(true) failed. (ret: %d)\n",
chrdev_group->id, ret);
break;
default:
break;
}
if (ret)
goto fail_tc;
stream_ctx->remain_len = 0;
ret = itedtv_bus_start_streaming(&isdb2056->it930x.bus,
isdb2056_device_stream_handler,
stream_ctx);
if (ret) {
dev_err(isdb2056->dev,
"isdb2056_chrdev_start_capture %u: itedtv_bus_start_streaming() failed. (ret: %d)\n",
chrdev_group->id, ret);
goto fail_bus;
}
return 0;
fail_bus:
fail_tc:
switch (chrdev->current_system) {
case PTX_ISDB_T_SYSTEM:
tc90522_enable_ts_pins_t(&chrdev2056->tc90522_t, false);
break;
case PTX_ISDB_S_SYSTEM:
tc90522_enable_ts_pins_s(&chrdev2056->tc90522_s, false);
break;
default:
break;
}
fail:
return ret;
}
static int isdb2056_chrdev_stop_capture(struct ptx_chrdev *chrdev)
{
struct ptx_chrdev_group *chrdev_group = chrdev->parent;
struct isdb2056_chrdev *chrdev2056 = chrdev->priv;
struct isdb2056_device *isdb2056 = container_of(chrdev2056,
struct isdb2056_device,
chrdev2056);
dev_dbg(isdb2056->dev,
"isdb2056_chrdev_stop_capture %u\n", chrdev_group->id);
itedtv_bus_stop_streaming(&isdb2056->it930x.bus);
if (!atomic_read(&isdb2056->available))
return 0;
switch (chrdev->current_system) {
case PTX_ISDB_T_SYSTEM:
tc90522_enable_ts_pins_t(&chrdev2056->tc90522_t, false);
break;
case PTX_ISDB_S_SYSTEM:
tc90522_enable_ts_pins_s(&chrdev2056->tc90522_s, false);
break;
default:
break;
}
return 0;
}
static int isdb2056_chrdev_set_capture(struct ptx_chrdev *chrdev, bool status)
{
return (status) ? isdb2056_chrdev_start_capture(chrdev)
: isdb2056_chrdev_stop_capture(chrdev);
}
static int isdb2056_chrdev_read_cnr_raw(struct ptx_chrdev *chrdev, u32 *value)
{
int ret = 0;
struct isdb2056_chrdev *chrdev2056 = chrdev->priv;
switch (chrdev->current_system) {
case PTX_ISDB_T_SYSTEM:
ret = tc90522_get_cndat_t(&chrdev2056->tc90522_t, value);
break;
case PTX_ISDB_S_SYSTEM:
ret = tc90522_get_cn_s(&chrdev2056->tc90522_s, (u16 *)value);
break;
default:
ret = -EINVAL;
break;
}
return ret;
}
static struct ptx_chrdev_operations isdb2056_chrdev_ops = {
.init = isdb2056_chrdev_init,
.term = isdb2056_chrdev_term,
.open = isdb2056_chrdev_open,
.release = isdb2056_chrdev_release,
.tune = isdb2056_chrdev_tune,
.check_lock = isdb2056_chrdev_check_lock,
.set_stream_id = isdb2056_chrdev_set_stream_id,
.set_lnb_voltage = NULL,
.set_capture = isdb2056_chrdev_set_capture,
.read_signal_strength = NULL,
.read_cnr = NULL,
.read_cnr_raw = isdb2056_chrdev_read_cnr_raw
};
static int isdb2056_device_load_config(struct isdb2056_device *isdb2056,
struct ptx_chrdev_config *chrdev_config)
{
int ret = 0, i;
struct device *dev = isdb2056->dev;
struct it930x_bridge *it930x = &isdb2056->it930x;
struct it930x_stream_input *input = &it930x->config.input[0];
struct isdb2056_chrdev *chrdev2056 = &isdb2056->chrdev2056;
u8 tmp;
ret = it930x_read_reg(it930x, 0x4979, &tmp);
if (ret) {
dev_err(dev,
"isdb2056_load_config: it930x_read_reg(0x4979) failed.\n");
return ret;
} else if (!tmp) {
dev_warn(dev, "EEPROM error.\n");
return ret;
}
chrdev_config->system_cap = PTX_ISDB_T_SYSTEM | PTX_ISDB_S_SYSTEM;
input->enable = true;
input->is_parallel = false;
input->port_number = 0;
input->slave_number = 0;
input->i2c_bus = 3;
input->i2c_addr = 0x10;
input->packet_len = 188;
input->sync_byte = 0x47;
chrdev2056->tc90522_t.dev = dev;
chrdev2056->tc90522_t.i2c = &it930x->i2c_master[2];
chrdev2056->tc90522_t.i2c_addr = 0x10;
chrdev2056->tc90522_t.is_secondary = false;
// This structure (tc90522_s0) is only required by ISDB2056N, but it is initialized in common just to be safe
chrdev2056->tc90522_s0.dev = dev;
chrdev2056->tc90522_s0.i2c = &it930x->i2c_master[2];
chrdev2056->tc90522_s0.i2c_addr = 0x11;
chrdev2056->tc90522_s0.is_secondary = false;
chrdev2056->tc90522_s.dev = dev;
chrdev2056->tc90522_s.i2c = &it930x->i2c_master[2];
switch (isdb2056->isdb2056_model) {
case ISDB2056_MODEL:
// ISDB2056 TS demodulator: Toshiba TC90532XBG
chrdev2056->tc90522_s.i2c_addr = 0x11;
chrdev2056->tc90522_s.is_secondary = false;
break;
case ISDB2056N_MODEL:
// ISDB2056N TS demodulator: Toshiba TC90522XBG
chrdev2056->tc90522_s.i2c_addr = 0x13;
chrdev2056->tc90522_s.is_secondary = true;
break;
default:
dev_err(dev, "isdb2056_device_load_config: undefined model (model: %d)\n", isdb2056->isdb2056_model);
return -EINVAL;
}
chrdev2056->r850.dev = dev;
chrdev2056->r850.i2c = &chrdev2056->tc90522_t.i2c_master;
chrdev2056->r850.i2c_addr = 0x7c;
chrdev2056->r850.config.xtal = 24000;
chrdev2056->r850.config.loop_through = false;
chrdev2056->r850.config.clock_out = false;
chrdev2056->r850.config.no_imr_calibration = true;
chrdev2056->r850.config.no_lpf_calibration = true;
chrdev2056->rt710.dev = dev;
chrdev2056->rt710.i2c = &chrdev2056->tc90522_s.i2c_master;
chrdev2056->rt710.i2c_addr = 0x7a;
chrdev2056->rt710.config.xtal = 24000;
chrdev2056->rt710.config.loop_through = false;
chrdev2056->rt710.config.clock_out = false;
chrdev2056->rt710.config.signal_output_mode = RT710_SIGNAL_OUTPUT_DIFFERENTIAL;
chrdev2056->rt710.config.agc_mode = RT710_AGC_POSITIVE;
chrdev2056->rt710.config.vga_atten_mode = RT710_VGA_ATTEN_OFF;
chrdev2056->rt710.config.fine_gain = RT710_FINE_GAIN_3DB;
chrdev2056->rt710.config.scan_mode = RT710_SCAN_MANUAL;
for (i = 1; i < 5; i++) {
it930x->config.input[i].enable = false;
it930x->config.input[i].port_number = i;
}
return 0;
}
int isdb2056_device_init(struct isdb2056_device *isdb2056, struct device *dev,
enum isdb2056_model isdb2056_model,
struct ptx_chrdev_context *chrdev_ctx,
struct completion *quit_completion)
{
int ret = 0;
struct it930x_bridge *it930x;
struct itedtv_bus *bus;
struct ptx_chrdev_config chrdev_config;
struct ptx_chrdev_group_config chrdev_group_config;
struct ptx_chrdev_group *chrdev_group;
struct isdb2056_stream_context *stream_ctx;
if (!isdb2056 || !dev || !chrdev_ctx || !quit_completion)
return -EINVAL;
dev_dbg(dev, "isdb2056_device_init\n");
get_device(dev);
kref_init(&isdb2056->kref);
isdb2056->dev = dev;
isdb2056->isdb2056_model = isdb2056_model;
isdb2056->quit_completion = quit_completion;
stream_ctx = kzalloc(sizeof(*stream_ctx), GFP_KERNEL);