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[media] xc5000: optimize firmware retry logic

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Currently, firmware retry logic keeps reading from FS every
time during the retry logic. This is not needed. Instead,
only release the firmware read after success.

While here, make the non-debug messages less verbose, as it
only matters to the user if the firmware was successfully
loaded, or if some error happened.

Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Mauro Carvalho Chehab 2014-07-30 11:09:15 -03:00
parent 2621c0b322
commit 8604f3552b
1 changed files with 38 additions and 35 deletions
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73
drivers/media/tuners/xc5000.c
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@ -625,48 +625,30 @@ static int xc_set_xtal(struct dvb_frontend *fe)
return ret;
}
static int xc5000_fwupload(struct dvb_frontend *fe)
static int xc5000_fwupload(struct dvb_frontend *fe,
const struct xc5000_fw_cfg *desired_fw,
const struct firmware *fw)
{
struct xc5000_priv *priv = fe->tuner_priv;
const struct firmware *fw;
int ret;
const struct xc5000_fw_cfg *desired_fw =
xc5000_assign_firmware(priv->chip_id);
/* request the firmware, this will block and timeout */
dprintk(1, "waiting for firmware upload (%s)...\n",
desired_fw->name);
priv->pll_register_no = desired_fw->pll_reg;
priv->init_status_supported = desired_fw->init_status_supported;
priv->fw_checksum_supported = desired_fw->fw_checksum_supported;
/* request the firmware, this will block and timeout */
printk(KERN_INFO "xc5000: waiting for firmware upload (%s)...\n",
desired_fw->name);
ret = request_firmware(&fw, desired_fw->name,
priv->i2c_props.adap->dev.parent);
if (ret) {
printk(KERN_ERR "xc5000: Upload failed. (file not found?)\n");
goto out;
} else {
printk(KERN_DEBUG "xc5000: firmware read %Zu bytes.\n",
fw->size);
ret = 0;
}
dprintk(1, "firmware uploading...\n");
ret = xc_load_i2c_sequence(fe, fw->data);
if (!ret) {
ret = xc_set_xtal(fe);
dprintk(1, "Firmware upload complete...\n");
} else
printk(KERN_ERR "xc5000: firmware upload failed...\n");
if (fw->size != desired_fw->size) {
printk(KERN_ERR "xc5000: firmware incorrect size\n");
ret = -EINVAL;
} else {
printk(KERN_INFO "xc5000: firmware uploading...\n");
ret = xc_load_i2c_sequence(fe, fw->data);
if (0 == ret)
ret = xc_set_xtal(fe);
if (0 == ret)
printk(KERN_INFO "xc5000: firmware upload complete...\n");
else
printk(KERN_ERR "xc5000: firmware upload failed...\n");
}
out:
release_firmware(fw);
return ret;
}
@ -1101,6 +1083,8 @@ static int xc5000_get_status(struct dvb_frontend *fe, u32 *status)
static int xc_load_fw_and_init_tuner(struct dvb_frontend *fe, int force)
{
struct xc5000_priv *priv = fe->tuner_priv;
const struct xc5000_fw_cfg *desired_fw = xc5000_assign_firmware(priv->chip_id);
const struct firmware *fw;
int ret, i;
u16 pll_lock_status;
u16 fw_ck;
@ -1110,11 +1094,26 @@ static int xc_load_fw_and_init_tuner(struct dvb_frontend *fe, int force)
if (!force && xc5000_is_firmware_loaded(fe) == 0)
return 0;
ret = request_firmware(&fw, desired_fw->name,
priv->i2c_props.adap->dev.parent);
if (ret) {
printk(KERN_ERR "xc5000: Upload failed. (file not found?)\n");
return ret;
}
dprintk(1, "firmware read %Zu bytes.\n", fw->size);
if (fw->size != desired_fw->size) {
printk(KERN_ERR "xc5000: firmware file with incorrect size\n");
ret = -EINVAL;
goto err;
}
/* Try up to 5 times to load firmware */
for (i = 0; i < 5; i++) {
ret = xc5000_fwupload(fe);
ret = xc5000_fwupload(fe, desired_fw, fw);
if (ret != 0)
return ret;
goto err;
msleep(20);
@ -1171,9 +1170,13 @@ static int xc_load_fw_and_init_tuner(struct dvb_frontend *fe, int force)
/* Default to "CABLE" mode */
ret = xc_write_reg(priv, XREG_SIGNALSOURCE, XC_RF_MODE_CABLE);
printk(KERN_INFO "xc5000: Firmware %s loaded and running.\n",
desired_fw->name);
break;
}
err:
release_firmware(fw);
return ret;
}