diff options
author | 2016-06-29 20:39:48 -0300 | |
---|---|---|
committer | 2016-07-08 16:58:41 -0300 | |
commit | 60701d5f5bd9d360b4b10e67270618534c62b7dd (patch) | |
tree | 4cd8406cf11ad006c78fb4209a1dce1949774194 /drivers/media/dvb-frontends/m88ds3103.c | |
parent | [media] m88ds3103: use Hz instead of kHz on calculations (diff) | |
download | linux-60701d5f5bd9d360b4b10e67270618534c62b7dd.tar.gz linux-60701d5f5bd9d360b4b10e67270618534c62b7dd.tar.bz2 linux-60701d5f5bd9d360b4b10e67270618534c62b7dd.zip |
[media] m88ds3103: refactor firmware download
* remove some unneeded variable initialization
* rename variables
* use min() macro to calc max i2c xfer len
* change bad firmware error code from EFAULT to EINVAL
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'drivers/media/dvb-frontends/m88ds3103.c')
-rw-r--r-- | drivers/media/dvb-frontends/m88ds3103.c | 49 |
1 files changed, 22 insertions, 27 deletions
diff --git a/drivers/media/dvb-frontends/m88ds3103.c b/drivers/media/dvb-frontends/m88ds3103.c index 5158bf37c76b..e0fe5bc9dbce 100644 --- a/drivers/media/dvb-frontends/m88ds3103.c +++ b/drivers/media/dvb-frontends/m88ds3103.c @@ -621,10 +621,10 @@ static int m88ds3103_init(struct dvb_frontend *fe) struct m88ds3103_dev *dev = fe->demodulator_priv; struct i2c_client *client = dev->client; struct dtv_frontend_properties *c = &fe->dtv_property_cache; - int ret, len, remaining; + int ret, len, rem; unsigned int utmp; - const struct firmware *fw = NULL; - u8 *fw_file; + const struct firmware *firmware; + const char *name; dev_dbg(&client->dev, "\n"); @@ -650,7 +650,7 @@ static int m88ds3103_init(struct dvb_frontend *fe) dev_dbg(&client->dev, "firmware=%02x\n", utmp); if (utmp) - goto skip_fw_download; + goto warm; /* global reset, global diseqc reset, golbal fec reset */ ret = regmap_write(dev->regmap, 0x07, 0xe0); @@ -665,52 +665,47 @@ static int m88ds3103_init(struct dvb_frontend *fe) m88ds3103_ops.info.name); if (dev->chip_id == M88RS6000_CHIP_ID) - fw_file = M88RS6000_FIRMWARE; + name = M88RS6000_FIRMWARE; else - fw_file = M88DS3103_FIRMWARE; + name = M88DS3103_FIRMWARE; /* request the firmware, this will block and timeout */ - ret = request_firmware(&fw, fw_file, &client->dev); + ret = request_firmware(&firmware, name, &client->dev); if (ret) { - dev_err(&client->dev, "firmware file '%s' not found\n", fw_file); + dev_err(&client->dev, "firmware file '%s' not found\n", name); goto err; } - dev_info(&client->dev, "downloading firmware from file '%s'\n", - fw_file); + dev_info(&client->dev, "downloading firmware from file '%s'\n", name); ret = regmap_write(dev->regmap, 0xb2, 0x01); if (ret) - goto error_fw_release; - - for (remaining = fw->size; remaining > 0; - remaining -= (dev->cfg->i2c_wr_max - 1)) { - len = remaining; - if (len > (dev->cfg->i2c_wr_max - 1)) - len = (dev->cfg->i2c_wr_max - 1); + goto err_release_firmware; + for (rem = firmware->size; rem > 0; rem -= (dev->cfg->i2c_wr_max - 1)) { + len = min(dev->cfg->i2c_wr_max - 1, rem); ret = regmap_bulk_write(dev->regmap, 0xb0, - &fw->data[fw->size - remaining], len); + &firmware->data[firmware->size - rem], + len); if (ret) { - dev_err(&client->dev, "firmware download failed=%d\n", + dev_err(&client->dev, "firmware download failed %d\n", ret); - goto error_fw_release; + goto err_release_firmware; } } ret = regmap_write(dev->regmap, 0xb2, 0x00); if (ret) - goto error_fw_release; + goto err_release_firmware; - release_firmware(fw); - fw = NULL; + release_firmware(firmware); ret = regmap_read(dev->regmap, 0xb9, &utmp); if (ret) goto err; if (!utmp) { + ret = -EINVAL; dev_info(&client->dev, "firmware did not run\n"); - ret = -EFAULT; goto err; } @@ -719,7 +714,7 @@ static int m88ds3103_init(struct dvb_frontend *fe) dev_info(&client->dev, "firmware version: %X.%X\n", (utmp >> 4) & 0xf, (utmp >> 0 & 0xf)); -skip_fw_download: +warm: /* warm state */ dev->warm = true; @@ -732,8 +727,8 @@ skip_fw_download: c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE; return 0; -error_fw_release: - release_firmware(fw); +err_release_firmware: + release_firmware(firmware); err: dev_dbg(&client->dev, "failed=%d\n", ret); return ret; |