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path: root/drivers/staging/media/mn88473/mn88473.c
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Diffstat (limited to 'drivers/staging/media/mn88473/mn88473.c')
-rw-r--r--drivers/staging/media/mn88473/mn88473.c157
1 files changed, 108 insertions, 49 deletions
diff --git a/drivers/staging/media/mn88473/mn88473.c b/drivers/staging/media/mn88473/mn88473.c
index a333744b76b9..8b6736c70057 100644
--- a/drivers/staging/media/mn88473/mn88473.c
+++ b/drivers/staging/media/mn88473/mn88473.c
@@ -17,7 +17,7 @@
#include "mn88473_priv.h"
static int mn88473_get_tune_settings(struct dvb_frontend *fe,
- struct dvb_frontend_tune_settings *s)
+ struct dvb_frontend_tune_settings *s)
{
s->min_delay_ms = 1000;
return 0;
@@ -30,13 +30,18 @@ static int mn88473_set_frontend(struct dvb_frontend *fe)
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
int ret, i;
u32 if_frequency;
+ u64 tmp;
u8 delivery_system_val, if_val[3], bw_val[7];
dev_dbg(&client->dev,
- "delivery_system=%u modulation=%u frequency=%u bandwidth_hz=%u symbol_rate=%u inversion=%d stream_id=%d\n",
- c->delivery_system, c->modulation,
- c->frequency, c->bandwidth_hz, c->symbol_rate,
- c->inversion, c->stream_id);
+ "delivery_system=%u modulation=%u frequency=%u bandwidth_hz=%u symbol_rate=%u inversion=%d stream_id=%d\n",
+ c->delivery_system,
+ c->modulation,
+ c->frequency,
+ c->bandwidth_hz,
+ c->symbol_rate,
+ c->inversion,
+ c->stream_id);
if (!dev->warm) {
ret = -EAGAIN;
@@ -58,32 +63,13 @@ static int mn88473_set_frontend(struct dvb_frontend *fe)
goto err;
}
- switch (c->delivery_system) {
- case SYS_DVBT:
- case SYS_DVBT2:
- if (c->bandwidth_hz <= 6000000) {
- /* IF 3570000 Hz, BW 6000000 Hz */
- memcpy(if_val, "\x24\x8e\x8a", 3);
- memcpy(bw_val, "\xe9\x55\x55\x1c\x29\x1c\x29", 7);
- } else if (c->bandwidth_hz <= 7000000) {
- /* IF 4570000 Hz, BW 7000000 Hz */
- memcpy(if_val, "\x2e\xcb\xfb", 3);
- memcpy(bw_val, "\xc8\x00\x00\x17\x0a\x17\x0a", 7);
- } else if (c->bandwidth_hz <= 8000000) {
- /* IF 4570000 Hz, BW 8000000 Hz */
- memcpy(if_val, "\x2e\xcb\xfb", 3);
- memcpy(bw_val, "\xaf\x00\x00\x11\xec\x11\xec", 7);
- } else {
- ret = -EINVAL;
- goto err;
- }
- break;
- case SYS_DVBC_ANNEX_A:
- /* IF 5070000 Hz, BW 8000000 Hz */
- memcpy(if_val, "\x33\xea\xb3", 3);
+ if (c->bandwidth_hz <= 6000000) {
+ memcpy(bw_val, "\xe9\x55\x55\x1c\x29\x1c\x29", 7);
+ } else if (c->bandwidth_hz <= 7000000) {
+ memcpy(bw_val, "\xc8\x00\x00\x17\x0a\x17\x0a", 7);
+ } else if (c->bandwidth_hz <= 8000000) {
memcpy(bw_val, "\xaf\x00\x00\x11\xec\x11\xec", 7);
- break;
- default:
+ } else {
ret = -EINVAL;
goto err;
}
@@ -105,17 +91,12 @@ static int mn88473_set_frontend(struct dvb_frontend *fe)
if_frequency = 0;
}
- switch (if_frequency) {
- case 3570000:
- case 4570000:
- case 5070000:
- break;
- default:
- dev_err(&client->dev, "IF frequency %d not supported\n",
- if_frequency);
- ret = -EINVAL;
- goto err;
- }
+ /* Calculate IF registers ( (1<<24)*IF / Xtal ) */
+ tmp = div_u64(if_frequency * (u64)(1<<24) + (dev->xtal / 2),
+ dev->xtal);
+ if_val[0] = ((tmp >> 16) & 0xff);
+ if_val[1] = ((tmp >> 8) & 0xff);
+ if_val[2] = ((tmp >> 0) & 0xff);
ret = regmap_write(dev->regmap[2], 0x05, 0x00);
ret = regmap_write(dev->regmap[2], 0xfb, 0x13);
@@ -190,7 +171,10 @@ static int mn88473_read_status(struct dvb_frontend *fe, fe_status_t *status)
{
struct i2c_client *client = fe->demodulator_priv;
struct mn88473_dev *dev = i2c_get_clientdata(client);
+ struct dtv_frontend_properties *c = &fe->dtv_property_cache;
int ret;
+ unsigned int utmp;
+ int lock = 0;
*status = 0;
@@ -199,8 +183,51 @@ static int mn88473_read_status(struct dvb_frontend *fe, fe_status_t *status)
goto err;
}
- *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI |
- FE_HAS_SYNC | FE_HAS_LOCK;
+ switch (c->delivery_system) {
+ case SYS_DVBT:
+ ret = regmap_read(dev->regmap[0], 0x62, &utmp);
+ if (ret)
+ goto err;
+ if (!(utmp & 0xA0)) {
+ if ((utmp & 0xF) >= 0x03)
+ *status |= FE_HAS_SIGNAL;
+ if ((utmp & 0xF) >= 0x09)
+ lock = 1;
+ }
+ break;
+ case SYS_DVBT2:
+ ret = regmap_read(dev->regmap[2], 0x8B, &utmp);
+ if (ret)
+ goto err;
+ if (!(utmp & 0x40)) {
+ if ((utmp & 0xF) >= 0x07)
+ *status |= FE_HAS_SIGNAL;
+ if ((utmp & 0xF) >= 0x0a)
+ *status |= FE_HAS_CARRIER;
+ if ((utmp & 0xF) >= 0x0d)
+ *status |= FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK;
+ }
+ break;
+ case SYS_DVBC_ANNEX_A:
+ ret = regmap_read(dev->regmap[1], 0x85, &utmp);
+ if (ret)
+ goto err;
+ if (!(utmp & 0x40)) {
+ ret = regmap_read(dev->regmap[1], 0x89, &utmp);
+ if (ret)
+ goto err;
+ if (utmp & 0x01)
+ lock = 1;
+ }
+ break;
+ default:
+ ret = -EINVAL;
+ goto err;
+ }
+
+ if (lock)
+ *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI |
+ FE_HAS_SYNC | FE_HAS_LOCK;
return 0;
err:
@@ -215,11 +242,23 @@ static int mn88473_init(struct dvb_frontend *fe)
int ret, len, remaining;
const struct firmware *fw = NULL;
u8 *fw_file = MN88473_FIRMWARE;
+ unsigned int tmp;
dev_dbg(&client->dev, "\n");
- if (dev->warm)
+ /* set cold state by default */
+ dev->warm = false;
+
+ /* check if firmware is already running */
+ ret = regmap_read(dev->regmap[0], 0xf5, &tmp);
+ if (ret)
+ goto err;
+
+ if (!(tmp & 0x1)) {
+ dev_info(&client->dev, "firmware already running\n");
+ dev->warm = true;
return 0;
+ }
/* request the firmware, this will block and timeout */
ret = request_firmware(&fw, fw_file, &client->dev);
@@ -229,7 +268,7 @@ static int mn88473_init(struct dvb_frontend *fe)
}
dev_info(&client->dev, "downloading firmware from file '%s'\n",
- fw_file);
+ fw_file);
ret = regmap_write(dev->regmap[0], 0xf5, 0x03);
if (ret)
@@ -239,17 +278,31 @@ static int mn88473_init(struct dvb_frontend *fe)
remaining -= (dev->i2c_wr_max - 1)) {
len = remaining;
if (len > (dev->i2c_wr_max - 1))
- len = (dev->i2c_wr_max - 1);
+ len = dev->i2c_wr_max - 1;
ret = regmap_bulk_write(dev->regmap[0], 0xf6,
- &fw->data[fw->size - remaining], len);
+ &fw->data[fw->size - remaining], len);
if (ret) {
dev_err(&client->dev, "firmware download failed=%d\n",
- ret);
+ ret);
goto err;
}
}
+ /* parity check of firmware */
+ ret = regmap_read(dev->regmap[0], 0xf8, &tmp);
+ if (ret) {
+ dev_err(&client->dev,
+ "parity reg read failed=%d\n", ret);
+ goto err;
+ }
+ if (tmp & 0x10) {
+ dev_err(&client->dev,
+ "firmware parity check failed=0x%x\n", tmp);
+ goto err;
+ }
+ dev_err(&client->dev, "firmware parity check succeeded=0x%x\n", tmp);
+
ret = regmap_write(dev->regmap[0], 0xf5, 0x00);
if (ret)
goto err;
@@ -293,6 +346,8 @@ static struct dvb_frontend_ops mn88473_ops = {
.delsys = {SYS_DVBT, SYS_DVBT2, SYS_DVBC_ANNEX_AC},
.info = {
.name = "Panasonic MN88473",
+ .symbol_rate_min = 1000000,
+ .symbol_rate_max = 7200000,
.caps = FE_CAN_FEC_1_2 |
FE_CAN_FEC_2_3 |
FE_CAN_FEC_3_4 |
@@ -325,7 +380,7 @@ static struct dvb_frontend_ops mn88473_ops = {
};
static int mn88473_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+ const struct i2c_device_id *id)
{
struct mn88473_config *config = client->dev.platform_data;
struct mn88473_dev *dev;
@@ -352,6 +407,10 @@ static int mn88473_probe(struct i2c_client *client,
}
dev->i2c_wr_max = config->i2c_wr_max;
+ if (!config->xtal)
+ dev->xtal = 25000000;
+ else
+ dev->xtal = config->xtal;
dev->client[0] = client;
dev->regmap[0] = regmap_init_i2c(dev->client[0], &regmap_config);
if (IS_ERR(dev->regmap[0])) {
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.