diff options
Diffstat (limited to 'drivers/media/dvb/frontends/a8293.c')
| -rw-r--r-- | drivers/media/dvb/frontends/a8293.c | 167 |
1 files changed, 0 insertions, 167 deletions
diff --git a/drivers/media/dvb/frontends/a8293.c b/drivers/media/dvb/frontends/a8293.c deleted file mode 100644 index cff44a389b40..000000000000 --- a/drivers/media/dvb/frontends/a8293.c +++ /dev/null @@ -1,167 +0,0 @@ -/* - * Allegro A8293 SEC driver - * - * Copyright (C) 2011 Antti Palosaari <crope@iki.fi> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#include "dvb_frontend.h" -#include "a8293.h" - -struct a8293_priv { - struct i2c_adapter *i2c; - const struct a8293_config *cfg; - u8 reg[2]; -}; - -static int a8293_i2c(struct a8293_priv *priv, u8 *val, int len, bool rd) -{ - int ret; - struct i2c_msg msg[1] = { - { - .addr = priv->cfg->i2c_addr, - .len = len, - .buf = val, - } - }; - - if (rd) - msg[0].flags = I2C_M_RD; - else - msg[0].flags = 0; - - ret = i2c_transfer(priv->i2c, msg, 1); - if (ret == 1) { - ret = 0; - } else { - dev_warn(&priv->i2c->dev, "%s: i2c failed=%d rd=%d\n", - KBUILD_MODNAME, ret, rd); - ret = -EREMOTEIO; - } - - return ret; -} - -static int a8293_wr(struct a8293_priv *priv, u8 *val, int len) -{ - return a8293_i2c(priv, val, len, 0); -} - -static int a8293_rd(struct a8293_priv *priv, u8 *val, int len) -{ - return a8293_i2c(priv, val, len, 1); -} - -static int a8293_set_voltage(struct dvb_frontend *fe, - fe_sec_voltage_t fe_sec_voltage) -{ - struct a8293_priv *priv = fe->sec_priv; - int ret; - - dev_dbg(&priv->i2c->dev, "%s: fe_sec_voltage=%d\n", __func__, - fe_sec_voltage); - - switch (fe_sec_voltage) { - case SEC_VOLTAGE_OFF: - /* ENB=0 */ - priv->reg[0] = 0x10; - break; - case SEC_VOLTAGE_13: - /* VSEL0=1, VSEL1=0, VSEL2=0, VSEL3=0, ENB=1*/ - priv->reg[0] = 0x31; - break; - case SEC_VOLTAGE_18: - /* VSEL0=0, VSEL1=0, VSEL2=0, VSEL3=1, ENB=1*/ - priv->reg[0] = 0x38; - break; - default: - ret = -EINVAL; - goto err; - }; - - ret = a8293_wr(priv, &priv->reg[0], 1); - if (ret) - goto err; - - return ret; -err: - dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); - return ret; -} - -static void a8293_release_sec(struct dvb_frontend *fe) -{ - a8293_set_voltage(fe, SEC_VOLTAGE_OFF); - - kfree(fe->sec_priv); - fe->sec_priv = NULL; -} - -struct dvb_frontend *a8293_attach(struct dvb_frontend *fe, - struct i2c_adapter *i2c, const struct a8293_config *cfg) -{ - int ret; - struct a8293_priv *priv = NULL; - u8 buf[2]; - - /* allocate memory for the internal priv */ - priv = kzalloc(sizeof(struct a8293_priv), GFP_KERNEL); - if (priv == NULL) { - ret = -ENOMEM; - goto err; - } - - /* setup the priv */ - priv->i2c = i2c; - priv->cfg = cfg; - fe->sec_priv = priv; - - /* check if the SEC is there */ - ret = a8293_rd(priv, buf, 2); - if (ret) - goto err; - - /* ENB=0 */ - priv->reg[0] = 0x10; - ret = a8293_wr(priv, &priv->reg[0], 1); - if (ret) - goto err; - - /* TMODE=0, TGATE=1 */ - priv->reg[1] = 0x82; - ret = a8293_wr(priv, &priv->reg[1], 1); - if (ret) - goto err; - - fe->ops.release_sec = a8293_release_sec; - - /* override frontend ops */ - fe->ops.set_voltage = a8293_set_voltage; - - dev_info(&priv->i2c->dev, "%s: Allegro A8293 SEC attached\n", - KBUILD_MODNAME); - - return fe; -err: - dev_dbg(&i2c->dev, "%s: failed=%d\n", __func__, ret); - kfree(priv); - return NULL; -} -EXPORT_SYMBOL(a8293_attach); - -MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); -MODULE_DESCRIPTION("Allegro A8293 SEC driver"); -MODULE_LICENSE("GPL"); |