diff options
| author | Antti Palosaari <crope@iki.fi> | 2014-08-22 02:06:13 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2014-09-02 20:53:30 +0200 |
| commit | d28677ffbc8443d9a97a50b15989ebbbf00a729e (patch) | |
| tree | 4f51bf20af8e43b2d4c4c716397b2023c333cf6a /drivers/media/dvb-frontends/m88ds3103.c | |
| parent | [media] m88ts2022: fix coding style issues (diff) | |
| download | linux-d28677ffbc8443d9a97a50b15989ebbbf00a729e.tar.xz linux-d28677ffbc8443d9a97a50b15989ebbbf00a729e.zip | |
[media] m88ds3103: change .set_voltage() implementation
Add some error checking and implement functionality a little bit
differently.
Cc: Nibble Max <nibble.max@gmail.com>
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Diffstat (limited to 'drivers/media/dvb-frontends/m88ds3103.c')
| -rw-r--r-- | drivers/media/dvb-frontends/m88ds3103.c | 50 |
1 files changed, 34 insertions, 16 deletions
diff --git a/drivers/media/dvb-frontends/m88ds3103.c b/drivers/media/dvb-frontends/m88ds3103.c index 238b04eb1f5a..25d9d979c07c 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_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_dis = 0; break; case SEC_VOLTAGE_13: - if (priv->cfg->lnb_hv_pol) - data |= 0x01; + voltage_sel = 0; + voltage_dis = 0; break; case SEC_VOLTAGE_OFF: - if (priv->cfg->lnb_en_pol) - data &= ~0x02; - else - data |= 0x02; + voltage_sel = 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_dis ^= priv->cfg->lnb_en_pol; + + 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, |