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Diffstat (limited to 'drivers/media/common/tuners/tda18218.c')
-rw-r--r--drivers/media/common/tuners/tda18218.c342
1 files changed, 0 insertions, 342 deletions
diff --git a/drivers/media/common/tuners/tda18218.c b/drivers/media/common/tuners/tda18218.c
deleted file mode 100644
index dfb3a831df4..00000000000
--- a/drivers/media/common/tuners/tda18218.c
+++ /dev/null
@@ -1,342 +0,0 @@
-/*
- * NXP TDA18218HN silicon tuner driver
- *
- * Copyright (C) 2010 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., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include "tda18218.h"
-#include "tda18218_priv.h"
-
-static int debug;
-module_param(debug, int, 0644);
-MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off).");
-
-/* write multiple registers */
-static int tda18218_wr_regs(struct tda18218_priv *priv, u8 reg, u8 *val, u8 len)
-{
- int ret = 0;
- u8 buf[1+len], quotient, remainder, i, msg_len, msg_len_max;
- struct i2c_msg msg[1] = {
- {
- .addr = priv->cfg->i2c_address,
- .flags = 0,
- .buf = buf,
- }
- };
-
- msg_len_max = priv->cfg->i2c_wr_max - 1;
- quotient = len / msg_len_max;
- remainder = len % msg_len_max;
- msg_len = msg_len_max;
- for (i = 0; (i <= quotient && remainder); i++) {
- if (i == quotient) /* set len of the last msg */
- msg_len = remainder;
-
- msg[0].len = msg_len + 1;
- buf[0] = reg + i * msg_len_max;
- memcpy(&buf[1], &val[i * msg_len_max], msg_len);
-
- ret = i2c_transfer(priv->i2c, msg, 1);
- if (ret != 1)
- break;
- }
-
- if (ret == 1) {
- ret = 0;
- } else {
- warn("i2c wr failed ret:%d reg:%02x len:%d", ret, reg, len);
- ret = -EREMOTEIO;
- }
-
- return ret;
-}
-
-/* read multiple registers */
-static int tda18218_rd_regs(struct tda18218_priv *priv, u8 reg, u8 *val, u8 len)
-{
- int ret;
- u8 buf[reg+len]; /* we must start read always from reg 0x00 */
- struct i2c_msg msg[2] = {
- {
- .addr = priv->cfg->i2c_address,
- .flags = 0,
- .len = 1,
- .buf = "\x00",
- }, {
- .addr = priv->cfg->i2c_address,
- .flags = I2C_M_RD,
- .len = sizeof(buf),
- .buf = buf,
- }
- };
-
- ret = i2c_transfer(priv->i2c, msg, 2);
- if (ret == 2) {
- memcpy(val, &buf[reg], len);
- ret = 0;
- } else {
- warn("i2c rd failed ret:%d reg:%02x len:%d", ret, reg, len);
- ret = -EREMOTEIO;
- }
-
- return ret;
-}
-
-/* write single register */
-static int tda18218_wr_reg(struct tda18218_priv *priv, u8 reg, u8 val)
-{
- return tda18218_wr_regs(priv, reg, &val, 1);
-}
-
-/* read single register */
-
-static int tda18218_rd_reg(struct tda18218_priv *priv, u8 reg, u8 *val)
-{
- return tda18218_rd_regs(priv, reg, val, 1);
-}
-
-static int tda18218_set_params(struct dvb_frontend *fe)
-{
- struct tda18218_priv *priv = fe->tuner_priv;
- struct dtv_frontend_properties *c = &fe->dtv_property_cache;
- u32 bw = c->bandwidth_hz;
- int ret;
- u8 buf[3], i, BP_Filter, LP_Fc;
- u32 LO_Frac;
- /* TODO: find out correct AGC algorithm */
- u8 agc[][2] = {
- { R20_AGC11, 0x60 },
- { R23_AGC21, 0x02 },
- { R20_AGC11, 0xa0 },
- { R23_AGC21, 0x09 },
- { R20_AGC11, 0xe0 },
- { R23_AGC21, 0x0c },
- { R20_AGC11, 0x40 },
- { R23_AGC21, 0x01 },
- { R20_AGC11, 0x80 },
- { R23_AGC21, 0x08 },
- { R20_AGC11, 0xc0 },
- { R23_AGC21, 0x0b },
- { R24_AGC22, 0x1c },
- { R24_AGC22, 0x0c },
- };
-
- if (fe->ops.i2c_gate_ctrl)
- fe->ops.i2c_gate_ctrl(fe, 1); /* open I2C-gate */
-
- /* low-pass filter cut-off frequency */
- if (bw <= 6000000) {
- LP_Fc = 0;
- priv->if_frequency = 3000000;
- } else if (bw <= 7000000) {
- LP_Fc = 1;
- priv->if_frequency = 3500000;
- } else {
- LP_Fc = 2;
- priv->if_frequency = 4000000;
- }
-
- LO_Frac = c->frequency + priv->if_frequency;
-
- /* band-pass filter */
- if (LO_Frac < 188000000)
- BP_Filter = 3;
- else if (LO_Frac < 253000000)
- BP_Filter = 4;
- else if (LO_Frac < 343000000)
- BP_Filter = 5;
- else
- BP_Filter = 6;
-
- buf[0] = (priv->regs[R1A_IF1] & ~7) | BP_Filter; /* BP_Filter */
- buf[1] = (priv->regs[R1B_IF2] & ~3) | LP_Fc; /* LP_Fc */
- buf[2] = priv->regs[R1C_AGC2B];
- ret = tda18218_wr_regs(priv, R1A_IF1, buf, 3);
- if (ret)
- goto error;
-
- buf[0] = (LO_Frac / 1000) >> 12; /* LO_Frac_0 */
- buf[1] = (LO_Frac / 1000) >> 4; /* LO_Frac_1 */
- buf[2] = (LO_Frac / 1000) << 4 |
- (priv->regs[R0C_MD5] & 0x0f); /* LO_Frac_2 */
- ret = tda18218_wr_regs(priv, R0A_MD3, buf, 3);
- if (ret)
- goto error;
-
- buf[0] = priv->regs[R0F_MD8] | (1 << 6); /* Freq_prog_Start */
- ret = tda18218_wr_regs(priv, R0F_MD8, buf, 1);
- if (ret)
- goto error;
-
- buf[0] = priv->regs[R0F_MD8] & ~(1 << 6); /* Freq_prog_Start */
- ret = tda18218_wr_regs(priv, R0F_MD8, buf, 1);
- if (ret)
- goto error;
-
- /* trigger AGC */
- for (i = 0; i < ARRAY_SIZE(agc); i++) {
- ret = tda18218_wr_reg(priv, agc[i][0], agc[i][1]);
- if (ret)
- goto error;
- }
-
-error:
- if (fe->ops.i2c_gate_ctrl)
- fe->ops.i2c_gate_ctrl(fe, 0); /* close I2C-gate */
-
- if (ret)
- dbg("%s: failed ret:%d", __func__, ret);
-
- return ret;
-}
-
-static int tda18218_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
-{
- struct tda18218_priv *priv = fe->tuner_priv;
- *frequency = priv->if_frequency;
- dbg("%s: if=%d", __func__, *frequency);
- return 0;
-}
-
-static int tda18218_sleep(struct dvb_frontend *fe)
-{
- struct tda18218_priv *priv = fe->tuner_priv;
- int ret;
-
- if (fe->ops.i2c_gate_ctrl)
- fe->ops.i2c_gate_ctrl(fe, 1); /* open I2C-gate */
-
- /* standby */
- ret = tda18218_wr_reg(priv, R17_PD1, priv->regs[R17_PD1] | (1 << 0));
-
- if (fe->ops.i2c_gate_ctrl)
- fe->ops.i2c_gate_ctrl(fe, 0); /* close I2C-gate */
-
- if (ret)
- dbg("%s: failed ret:%d", __func__, ret);
-
- return ret;
-}
-
-static int tda18218_init(struct dvb_frontend *fe)
-{
- struct tda18218_priv *priv = fe->tuner_priv;
- int ret;
-
- /* TODO: calibrations */
-
- if (fe->ops.i2c_gate_ctrl)
- fe->ops.i2c_gate_ctrl(fe, 1); /* open I2C-gate */
-
- ret = tda18218_wr_regs(priv, R00_ID, priv->regs, TDA18218_NUM_REGS);
-
- if (fe->ops.i2c_gate_ctrl)
- fe->ops.i2c_gate_ctrl(fe, 0); /* close I2C-gate */
-
- if (ret)
- dbg("%s: failed ret:%d", __func__, ret);
-
- return ret;
-}
-
-static int tda18218_release(struct dvb_frontend *fe)
-{
- kfree(fe->tuner_priv);
- fe->tuner_priv = NULL;
- return 0;
-}
-
-static const struct dvb_tuner_ops tda18218_tuner_ops = {
- .info = {
- .name = "NXP TDA18218",
-
- .frequency_min = 174000000,
- .frequency_max = 864000000,
- .frequency_step = 1000,
- },
-
- .release = tda18218_release,
- .init = tda18218_init,
- .sleep = tda18218_sleep,
-
- .set_params = tda18218_set_params,
-
- .get_if_frequency = tda18218_get_if_frequency,
-};
-
-struct dvb_frontend *tda18218_attach(struct dvb_frontend *fe,
- struct i2c_adapter *i2c, struct tda18218_config *cfg)
-{
- struct tda18218_priv *priv = NULL;
- u8 val;
- int ret;
- /* chip default registers values */
- static u8 def_regs[] = {
- 0xc0, 0x88, 0x00, 0x8e, 0x03, 0x00, 0x00, 0xd0, 0x00, 0x40,
- 0x00, 0x00, 0x07, 0xff, 0x84, 0x09, 0x00, 0x13, 0x00, 0x00,
- 0x01, 0x84, 0x09, 0xf0, 0x19, 0x0a, 0x8e, 0x69, 0x98, 0x01,
- 0x00, 0x58, 0x10, 0x40, 0x8c, 0x00, 0x0c, 0x48, 0x85, 0xc9,
- 0xa7, 0x00, 0x00, 0x00, 0x30, 0x81, 0x80, 0x00, 0x39, 0x00,
- 0x8a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf6, 0xf6
- };
-
- priv = kzalloc(sizeof(struct tda18218_priv), GFP_KERNEL);
- if (priv == NULL)
- return NULL;
-
- priv->cfg = cfg;
- priv->i2c = i2c;
- fe->tuner_priv = priv;
-
- if (fe->ops.i2c_gate_ctrl)
- fe->ops.i2c_gate_ctrl(fe, 1); /* open I2C-gate */
-
- /* check if the tuner is there */
- ret = tda18218_rd_reg(priv, R00_ID, &val);
- dbg("%s: ret:%d chip ID:%02x", __func__, ret, val);
- if (ret || val != def_regs[R00_ID]) {
- kfree(priv);
- return NULL;
- }
-
- info("NXP TDA18218HN successfully identified.");
-
- memcpy(&fe->ops.tuner_ops, &tda18218_tuner_ops,
- sizeof(struct dvb_tuner_ops));
- memcpy(priv->regs, def_regs, sizeof(def_regs));
-
- /* loop-through enabled chip default register values */
- if (priv->cfg->loop_through) {
- priv->regs[R17_PD1] = 0xb0;
- priv->regs[R18_PD2] = 0x59;
- }
-
- /* standby */
- ret = tda18218_wr_reg(priv, R17_PD1, priv->regs[R17_PD1] | (1 << 0));
- if (ret)
- dbg("%s: failed ret:%d", __func__, ret);
-
- if (fe->ops.i2c_gate_ctrl)
- fe->ops.i2c_gate_ctrl(fe, 0); /* close I2C-gate */
-
- return fe;
-}
-EXPORT_SYMBOL(tda18218_attach);
-
-MODULE_DESCRIPTION("NXP TDA18218HN silicon tuner driver");
-MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
-MODULE_LICENSE("GPL");
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