From 26eb7045f1c9eee3b65f573d27154d53aa9d6cc7 Mon Sep 17 00:00:00 2001 From: Antti Palosaari Date: Sat, 9 Apr 2011 20:07:30 -0300 Subject: [PATCH] [media] NXP TDA18212HN silicon tuner driver New silicon tuner driver. Signed-off-by: Antti Palosaari Signed-off-by: Mauro Carvalho Chehab --- drivers/media/common/tuners/Kconfig | 8 + drivers/media/common/tuners/Makefile | 1 + drivers/media/common/tuners/tda18212.c | 265 ++++++++++++++++++++++++++++ drivers/media/common/tuners/tda18212.h | 48 +++++ drivers/media/common/tuners/tda18212_priv.h | 44 +++++ 5 files changed, 366 insertions(+) create mode 100644 drivers/media/common/tuners/tda18212.c create mode 100644 drivers/media/common/tuners/tda18212.h create mode 100644 drivers/media/common/tuners/tda18212_priv.h diff --git a/drivers/media/common/tuners/Kconfig b/drivers/media/common/tuners/Kconfig index 6fc79f1..22d3ca3 100644 --- a/drivers/media/common/tuners/Kconfig +++ b/drivers/media/common/tuners/Kconfig @@ -186,4 +186,12 @@ config MEDIA_TUNER_TDA18218 default m if MEDIA_TUNER_CUSTOMISE help NXP TDA18218 silicon tuner driver. + +config MEDIA_TUNER_TDA18212 + tristate "NXP TDA18212 silicon tuner" + depends on VIDEO_MEDIA && I2C + default m if MEDIA_TUNER_CUSTOMISE + help + NXP TDA18212 silicon tuner driver. + endmenu diff --git a/drivers/media/common/tuners/Makefile b/drivers/media/common/tuners/Makefile index 96da03d..2cb4f53 100644 --- a/drivers/media/common/tuners/Makefile +++ b/drivers/media/common/tuners/Makefile @@ -25,6 +25,7 @@ obj-$(CONFIG_MEDIA_TUNER_MXL5007T) += mxl5007t.o obj-$(CONFIG_MEDIA_TUNER_MC44S803) += mc44s803.o obj-$(CONFIG_MEDIA_TUNER_MAX2165) += max2165.o obj-$(CONFIG_MEDIA_TUNER_TDA18218) += tda18218.o +obj-$(CONFIG_MEDIA_TUNER_TDA18212) += tda18212.o EXTRA_CFLAGS += -Idrivers/media/dvb/dvb-core EXTRA_CFLAGS += -Idrivers/media/dvb/frontends diff --git a/drivers/media/common/tuners/tda18212.c b/drivers/media/common/tuners/tda18212.c new file mode 100644 index 0000000..1f1db20 --- /dev/null +++ b/drivers/media/common/tuners/tda18212.c @@ -0,0 +1,265 @@ +/* + * NXP TDA18212HN silicon tuner driver + * + * Copyright (C) 2011 Antti Palosaari + * + * 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 "tda18212_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 tda18212_wr_regs(struct tda18212_priv *priv, u8 reg, u8 *val, + int len) +{ + int ret; + u8 buf[len+1]; + struct i2c_msg msg[1] = { + { + .addr = priv->cfg->i2c_address, + .flags = 0, + .len = sizeof(buf), + .buf = buf, + } + }; + + buf[0] = reg; + memcpy(&buf[1], val, len); + + ret = i2c_transfer(priv->i2c, msg, 1); + 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 tda18212_rd_regs(struct tda18212_priv *priv, u8 reg, u8 *val, + int len) +{ + int ret; + u8 buf[len]; + struct i2c_msg msg[2] = { + { + .addr = priv->cfg->i2c_address, + .flags = 0, + .len = 1, + .buf = ®, + }, { + .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, 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 tda18212_wr_reg(struct tda18212_priv *priv, u8 reg, u8 val) +{ + return tda18212_wr_regs(priv, reg, &val, 1); +} + +/* read single register */ +static int tda18212_rd_reg(struct tda18212_priv *priv, u8 reg, u8 *val) +{ + return tda18212_rd_regs(priv, reg, val, 1); +} + +#if 0 /* keep, useful when developing driver */ +static void tda18212_dump_regs(struct tda18212_priv *priv) +{ + int i; + u8 buf[256]; + + #define TDA18212_RD_LEN 32 + for (i = 0; i < sizeof(buf); i += TDA18212_RD_LEN) + tda18212_rd_regs(priv, i, &buf[i], TDA18212_RD_LEN); + + print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET, 32, 1, buf, + sizeof(buf), true); + + return; +} +#endif + +static int tda18212_set_params(struct dvb_frontend *fe, + struct dvb_frontend_parameters *p) +{ + struct tda18212_priv *priv = fe->tuner_priv; + struct dtv_frontend_properties *c = &fe->dtv_property_cache; + int ret, i; + u32 if_khz; + u8 buf[9]; + static const u8 bw_params[][3] = { + /* 0f 13 23 */ + { 0xb3, 0x20, 0x03 }, /* DVB-T 6 MHz */ + { 0xb3, 0x31, 0x01 }, /* DVB-T 7 MHz */ + { 0xb3, 0x22, 0x01 }, /* DVB-T 8 MHz */ + { 0x92, 0x53, 0x03 }, /* DVB-C */ + }; + + dbg("%s: delsys=%d RF=%d BW=%d", __func__, + c->delivery_system, c->frequency, c->bandwidth_hz); + + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 1); /* open I2C-gate */ + + switch (c->delivery_system) { + case SYS_DVBT: + switch (c->bandwidth_hz) { + case 6000000: + if_khz = priv->cfg->if_dvbt_6; + i = 0; + break; + case 7000000: + if_khz = priv->cfg->if_dvbt_7; + i = 1; + break; + case 8000000: + if_khz = priv->cfg->if_dvbt_8; + i = 2; + break; + default: + ret = -EINVAL; + goto error; + } + break; + case SYS_DVBC_ANNEX_AC: + if_khz = priv->cfg->if_dvbc; + i = 3; + break; + default: + ret = -EINVAL; + goto error; + } + + ret = tda18212_wr_reg(priv, 0x23, bw_params[i][2]); + if (ret) + goto error; + + ret = tda18212_wr_reg(priv, 0x06, 0x00); + if (ret) + goto error; + + ret = tda18212_wr_reg(priv, 0x0f, bw_params[i][0]); + if (ret) + goto error; + + buf[0] = 0x02; + buf[1] = bw_params[i][1]; + buf[2] = 0x03; /* default value */ + buf[3] = if_khz / 50; + buf[4] = ((c->frequency / 1000) >> 16) & 0xff; + buf[5] = ((c->frequency / 1000) >> 8) & 0xff; + buf[6] = ((c->frequency / 1000) >> 0) & 0xff; + buf[7] = 0xc1; + buf[8] = 0x01; + ret = tda18212_wr_regs(priv, 0x12, buf, sizeof(buf)); + if (ret) + goto error; + +exit: + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 0); /* close I2C-gate */ + + return ret; + +error: + dbg("%s: failed:%d", __func__, ret); + goto exit; +} + +static int tda18212_release(struct dvb_frontend *fe) +{ + kfree(fe->tuner_priv); + fe->tuner_priv = NULL; + return 0; +} + +static const struct dvb_tuner_ops tda18212_tuner_ops = { + .info = { + .name = "NXP TDA18212", + + .frequency_min = 48000000, + .frequency_max = 864000000, + .frequency_step = 1000, + }, + + .release = tda18212_release, + + .set_params = tda18212_set_params, +}; + +struct dvb_frontend *tda18212_attach(struct dvb_frontend *fe, + struct i2c_adapter *i2c, struct tda18212_config *cfg) +{ + struct tda18212_priv *priv = NULL; + int ret; + u8 val; + + priv = kzalloc(sizeof(struct tda18212_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 = tda18212_rd_reg(priv, 0x00, &val); + + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 0); /* close I2C-gate */ + + dbg("%s: ret:%d chip ID:%02x", __func__, ret, val); + if (ret || val != 0xc7) { + kfree(priv); + return NULL; + } + + info("NXP TDA18212HN successfully identified."); + + memcpy(&fe->ops.tuner_ops, &tda18212_tuner_ops, + sizeof(struct dvb_tuner_ops)); + + return fe; +} +EXPORT_SYMBOL(tda18212_attach); + +MODULE_DESCRIPTION("NXP TDA18212HN silicon tuner driver"); +MODULE_AUTHOR("Antti Palosaari "); +MODULE_LICENSE("GPL"); diff --git a/drivers/media/common/tuners/tda18212.h b/drivers/media/common/tuners/tda18212.h new file mode 100644 index 0000000..83b497f --- /dev/null +++ b/drivers/media/common/tuners/tda18212.h @@ -0,0 +1,48 @@ +/* + * NXP TDA18212HN silicon tuner driver + * + * Copyright (C) 2011 Antti Palosaari + * + * 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. + */ + +#ifndef TDA18212_H +#define TDA18212_H + +#include "dvb_frontend.h" + +struct tda18212_config { + u8 i2c_address; + + u16 if_dvbt_6; + u16 if_dvbt_7; + u16 if_dvbt_8; + u16 if_dvbc; +}; + +#if defined(CONFIG_MEDIA_TUNER_TDA18212) || \ + (defined(CONFIG_MEDIA_TUNER_TDA18212_MODULE) && defined(MODULE)) +extern struct dvb_frontend *tda18212_attach(struct dvb_frontend *fe, + struct i2c_adapter *i2c, struct tda18212_config *cfg); +#else +static inline struct dvb_frontend *tda18212_attach(struct dvb_frontend *fe, + struct i2c_adapter *i2c, struct tda18212_config *cfg) +{ + printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); + return NULL; +} +#endif + +#endif diff --git a/drivers/media/common/tuners/tda18212_priv.h b/drivers/media/common/tuners/tda18212_priv.h new file mode 100644 index 0000000..9adff93 --- /dev/null +++ b/drivers/media/common/tuners/tda18212_priv.h @@ -0,0 +1,44 @@ +/* + * NXP TDA18212HN silicon tuner driver + * + * Copyright (C) 2011 Antti Palosaari + * + * 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. + */ + +#ifndef TDA18212_PRIV_H +#define TDA18212_PRIV_H + +#include "tda18212.h" + +#define LOG_PREFIX "tda18212" + +#undef dbg +#define dbg(f, arg...) \ + if (debug) \ + printk(KERN_INFO LOG_PREFIX": " f "\n" , ## arg) +#undef err +#define err(f, arg...) printk(KERN_ERR LOG_PREFIX": " f "\n" , ## arg) +#undef info +#define info(f, arg...) printk(KERN_INFO LOG_PREFIX": " f "\n" , ## arg) +#undef warn +#define warn(f, arg...) printk(KERN_WARNING LOG_PREFIX": " f "\n" , ## arg) + +struct tda18212_priv { + struct tda18212_config *cfg; + struct i2c_adapter *i2c; +}; + +#endif -- 2.7.4