Moikka
Sure I can change that flag from voltage_en to voltage_dis. Mostly I
just wanted to get rid of those if () statements and bit operations when
handling boolean type flags.
regards
Antti
On 08/22/2014 06:19 AM, Nibble Max wrote:
>
> It is easier to understand for using "voltage_dis" to keep the same logic for
> voltage selection and off/on.
>
>> Add some error checking and implement functionality a little bit
>> differently.
>>
>> Signed-off-by: Antti Palosaari <cr...@iki.fi>
>> ---
>> drivers/media/dvb-frontends/m88ds3103.c | 50
>> ++++++++++++++++++++++-----------
>> 1 file changed, 34 insertions(+), 16 deletions(-)
>>
>> diff --git a/drivers/media/dvb-frontends/m88ds3103.c
>> b/drivers/media/dvb-frontends/m88ds3103.c
>> index 238b04e..d8fbdfd 100644
>> --- a/drivers/media/dvb-frontends/m88ds3103.c
>> +++ b/drivers/media/dvb-frontends/m88ds3103.c
>> @@ -1038,36 +1038,54 @@ err:
>> }
>>
>> static int m88ds3103_set_voltage(struct dvb_frontend *fe,
>> - fe_sec_voltage_t voltage)
>> + fe_sec_voltage_t fe_sec_voltage)
>> {
>> struct m88ds3103_priv *priv = fe->demodulator_priv;
>> - u8 data;
>> + int ret;
>> + u8 u8tmp;
>> + bool voltage_sel, voltage_en;
> bool voltage_sel, voltage_dis;
>>
>> - m88ds3103_rd_reg(priv, 0xa2, &data);
>> + dev_dbg(&priv->i2c->dev, "%s: fe_sec_voltage=%d\n", __func__,
>> + fe_sec_voltage);
>>
>> - data &= ~0x03; /* bit0 V/H, bit1 off/on */
>> - if (priv->cfg->lnb_en_pol)
>> - data |= 0x02;
>> + if (!priv->warm) {
>> + ret = -EAGAIN;
>> + goto err;
>> + }
>>
>> - switch (voltage) {
>> + switch (fe_sec_voltage) {
>> case SEC_VOLTAGE_18:
>> - if (priv->cfg->lnb_hv_pol == 0)
>> - data |= 0x01;
>> + voltage_sel = 1;
>> + voltage_en = 1;
> voltage_dis = 0;
>> break;
>> case SEC_VOLTAGE_13:
>> - if (priv->cfg->lnb_hv_pol)
>> - data |= 0x01;
>> + voltage_sel = 0;
>> + voltage_en = 1;
> voltage_dis = 0;
>> break;
>> case SEC_VOLTAGE_OFF:
>> - if (priv->cfg->lnb_en_pol)
>> - data &= ~0x02;
>> - else
>> - data |= 0x02;
>> + voltage_sel = 0;
>> + voltage_en = 0;
> voltage_dis = 1;
>> break;
>> + default:
>> + dev_dbg(&priv->i2c->dev, "%s: invalid fe_sec_voltage\n",
>> + __func__);
>> + ret = -EINVAL;
>> + goto err;
>> }
>> - m88ds3103_wr_reg(priv, 0xa2, data);
>> +
>> + /* output pin polarity */
>> + voltage_sel ^= priv->cfg->lnb_hv_pol;
>> + voltage_en ^= !priv->cfg->lnb_en_pol;
> voltage_dis ^= priv->cfg->lnb_en_pol;
>> +
>> + u8tmp = voltage_en << 1 | voltage_sel << 0;
> u8tmp = voltage_dis << 1 | voltage_sel << 0;
>> + ret = m88ds3103_wr_reg_mask(priv, 0xa2, u8tmp, 0x03);
>> + if (ret)
>> + goto err;
>>
>> return 0;
>> +err:
>> + dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
>> + return ret;
>> }
>>
>> static int m88ds3103_diseqc_send_master_cmd(struct dvb_frontend *fe,
>> --
>> http://palosaari.fi/
>>
>> --
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>
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