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authorAntti Palosaari <crope@iki.fi>2016-06-29 20:39:48 -0300
committerMauro Carvalho Chehab <mchehab@s-opensource.com>2016-07-08 16:58:41 -0300
commit60701d5f5bd9d360b4b10e67270618534c62b7dd (patch)
tree4cd8406cf11ad006c78fb4209a1dce1949774194 /drivers/media/dvb-frontends/m88ds3103.c
parentf5d9b88db7222bf5a8d0e5e7820873e3977d4ee3 (diff)
[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.c49
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;

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