[media] mn88473: Panasonic MN88473 DVB-T/T2/C demod driver
Only DVB-C is implemented. Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Antti Palosaari
Mauro Carvalho Chehab
parent
0ce277e45f
commit
dadb5bb473
@ -471,6 +471,13 @@ config DVB_SI2168
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help
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Say Y when you want to support this frontend.
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config DVB_MN88473
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tristate "Panasonic MN88473"
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depends on DVB_CORE && I2C
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default m if !MEDIA_SUBDRV_AUTOSELECT
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help
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Say Y when you want to support this frontend.
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config DVB_AS102_FE
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tristate
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depends on DVB_CORE
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@ -113,6 +113,7 @@ obj-$(CONFIG_DVB_RTL2830) += rtl2830.o
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obj-$(CONFIG_DVB_RTL2832) += rtl2832.o
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obj-$(CONFIG_DVB_RTL2832_SDR) += rtl2832_sdr.o
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obj-$(CONFIG_DVB_M88RS2000) += m88rs2000.o
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obj-$(CONFIG_DVB_MN88473) += mn88473.o
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obj-$(CONFIG_DVB_AF9033) += af9033.o
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obj-$(CONFIG_DVB_AS102_FE) += as102_fe.o
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obj-$(CONFIG_DVB_TC90522) += tc90522.o
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393
drivers/media/dvb-frontends/mn88473.c
Normal file
393
drivers/media/dvb-frontends/mn88473.c
Normal file
@ -0,0 +1,393 @@
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/*
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* Panasonic MN88473 DVB-T/T2/C demodulator driver
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*
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* Copyright (C) 2014 Antti Palosaari <crope@iki.fi>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include "mn88473_priv.h"
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static struct dvb_frontend_ops mn88473_ops;
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/* write multiple registers */
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static int mn88473_wregs(struct mn88473_dev *dev, u16 reg, const u8 *val, int len)
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{
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#define MAX_WR_LEN 21
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#define MAX_WR_XFER_LEN (MAX_WR_LEN + 1)
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int ret;
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u8 buf[MAX_WR_XFER_LEN];
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struct i2c_msg msg[1] = {
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{
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.addr = (reg >> 8) & 0xff,
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.flags = 0,
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.len = 1 + len,
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.buf = buf,
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}
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};
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if (WARN_ON(len > MAX_WR_LEN))
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return -EINVAL;
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buf[0] = (reg >> 0) & 0xff;
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memcpy(&buf[1], val, len);
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ret = i2c_transfer(dev->i2c, msg, 1);
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if (ret == 1) {
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ret = 0;
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} else {
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dev_warn(&dev->i2c->dev,
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"%s: i2c wr failed=%d reg=%02x len=%d\n",
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KBUILD_MODNAME, ret, reg, len);
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ret = -EREMOTEIO;
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}
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return ret;
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}
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/* read multiple registers */
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static int mn88473_rregs(struct mn88473_dev *dev, u16 reg, u8 *val, int len)
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{
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#define MAX_RD_LEN 2
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#define MAX_RD_XFER_LEN (MAX_RD_LEN)
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int ret;
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u8 buf[MAX_RD_XFER_LEN];
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struct i2c_msg msg[2] = {
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{
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.addr = (reg >> 8) & 0xff,
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.flags = 0,
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.len = 1,
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.buf = buf,
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}, {
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.addr = (reg >> 8) & 0xff,
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.flags = I2C_M_RD,
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.len = len,
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.buf = buf,
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}
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};
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if (WARN_ON(len > MAX_RD_LEN))
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return -EINVAL;
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buf[0] = (reg >> 0) & 0xff;
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ret = i2c_transfer(dev->i2c, msg, 2);
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if (ret == 2) {
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memcpy(val, buf, len);
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ret = 0;
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} else {
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dev_warn(&dev->i2c->dev,
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"%s: i2c rd failed=%d reg=%02x len=%d\n",
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KBUILD_MODNAME, ret, reg, len);
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ret = -EREMOTEIO;
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}
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return ret;
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}
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/* write single register */
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static int mn88473_wreg(struct mn88473_dev *dev, u16 reg, u8 val)
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{
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return mn88473_wregs(dev, reg, &val, 1);
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}
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/* read single register */
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static int mn88473_rreg(struct mn88473_dev *dev, u16 reg, u8 *val)
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{
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return mn88473_rregs(dev, reg, val, 1);
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}
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static int mn88473_get_tune_settings(struct dvb_frontend *fe,
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struct dvb_frontend_tune_settings *s)
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{
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s->min_delay_ms = 1000;
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return 0;
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}
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static int mn88473_set_frontend(struct dvb_frontend *fe)
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{
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struct mn88473_dev *dev = fe->demodulator_priv;
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struct dtv_frontend_properties *c = &fe->dtv_property_cache;
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int ret;
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u32 if_frequency = 0;
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dev_dbg(&dev->i2c->dev,
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"%s: delivery_system=%d modulation=%d frequency=%d symbol_rate=%d inversion=%d\n",
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__func__, c->delivery_system, c->modulation,
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c->frequency, c->symbol_rate, c->inversion);
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if (!dev->warm) {
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ret = -EAGAIN;
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goto err;
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}
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/* program tuner */
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if (fe->ops.tuner_ops.set_params) {
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ret = fe->ops.tuner_ops.set_params(fe);
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if (ret)
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goto err;
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}
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if (fe->ops.tuner_ops.get_if_frequency) {
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ret = fe->ops.tuner_ops.get_if_frequency(fe, &if_frequency);
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if (ret)
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goto err;
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dev_dbg(&dev->i2c->dev, "%s: get_if_frequency=%d\n",
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__func__, if_frequency);
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}
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if (if_frequency != 5070000) {
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dev_err(&dev->i2c->dev, "%s: IF frequency %d not supported\n",
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KBUILD_MODNAME, if_frequency);
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ret = -EINVAL;
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goto err;
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}
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ret = mn88473_wregs(dev, 0x1c05, "\x00", 1);
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ret = mn88473_wregs(dev, 0x1cfb, "\x13", 1);
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ret = mn88473_wregs(dev, 0x1cef, "\x13", 1);
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ret = mn88473_wregs(dev, 0x1cf9, "\x13", 1);
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ret = mn88473_wregs(dev, 0x1c00, "\x18", 1);
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ret = mn88473_wregs(dev, 0x1c01, "\x01", 1);
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ret = mn88473_wregs(dev, 0x1c02, "\x21", 1);
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ret = mn88473_wregs(dev, 0x1c03, "\x04", 1);
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ret = mn88473_wregs(dev, 0x1c0b, "\x00", 1);
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ret = mn88473_wregs(dev, 0x1c10, "\x33\xea\xb3\xaf\x00\x00\x11\xec\x11\xec", 10);
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ret = mn88473_wregs(dev, 0x1c2d, "\x3b", 1);
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ret = mn88473_wregs(dev, 0x1c2e, "\x00", 1);
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ret = mn88473_wregs(dev, 0x1c56, "\x0d", 1);
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ret = mn88473_wregs(dev, 0x1802, "\x13", 1);
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ret = mn88473_wregs(dev, 0x1803, "\x80", 1);
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ret = mn88473_wregs(dev, 0x1804, "\xba", 1);
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ret = mn88473_wregs(dev, 0x1805, "\x91", 1);
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ret = mn88473_wregs(dev, 0x1808, "\x28", 1);
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ret = mn88473_wregs(dev, 0x180a, "\x1a", 1);
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ret = mn88473_wregs(dev, 0x1813, "\x1f", 1);
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ret = mn88473_wregs(dev, 0x1819, "\x03", 1);
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ret = mn88473_wregs(dev, 0x181d, "\xb0", 1);
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ret = mn88473_wregs(dev, 0x182a, "\x72", 1);
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ret = mn88473_wregs(dev, 0x182d, "\x00", 1);
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ret = mn88473_wregs(dev, 0x183c, "\x00", 1);
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ret = mn88473_wregs(dev, 0x183f, "\xf8", 1);
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ret = mn88473_wregs(dev, 0x1840, "\xf4", 1);
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ret = mn88473_wregs(dev, 0x1841, "\x08", 1);
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ret = mn88473_wregs(dev, 0x18d2, "\x29", 1);
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ret = mn88473_wregs(dev, 0x18d4, "\x55", 1);
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ret = mn88473_wregs(dev, 0x1a10, "\x10", 1);
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ret = mn88473_wregs(dev, 0x1a11, "\xab", 1);
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ret = mn88473_wregs(dev, 0x1a12, "\x0d", 1);
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ret = mn88473_wregs(dev, 0x1a13, "\xae", 1);
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ret = mn88473_wregs(dev, 0x1a14, "\x1d", 1);
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ret = mn88473_wregs(dev, 0x1a15, "\x9d", 1);
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ret = mn88473_wregs(dev, 0x1abe, "\x08", 1);
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ret = mn88473_wregs(dev, 0x1c09, "\x08", 1);
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ret = mn88473_wregs(dev, 0x1c08, "\x1d", 1);
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ret = mn88473_wregs(dev, 0x18b2, "\x37", 1);
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ret = mn88473_wregs(dev, 0x18d7, "\x04", 1);
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ret = mn88473_wregs(dev, 0x1cf8, "\x9f", 1);
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if (ret)
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goto err;
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dev->delivery_system = c->delivery_system;
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return 0;
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err:
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dev_dbg(&dev->i2c->dev, "%s: failed=%d\n", __func__, ret);
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return ret;
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}
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static int mn88473_read_status(struct dvb_frontend *fe, fe_status_t *status)
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{
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struct mn88473_dev *dev = fe->demodulator_priv;
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int ret;
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*status = 0;
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if (!dev->warm) {
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ret = -EAGAIN;
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goto err;
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}
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*status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI |
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FE_HAS_SYNC | FE_HAS_LOCK;
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return 0;
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err:
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dev_dbg(&dev->i2c->dev, "%s: failed=%d\n", __func__, ret);
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return ret;
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}
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static int mn88473_init(struct dvb_frontend *fe)
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{
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struct mn88473_dev *dev = fe->demodulator_priv;
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int ret, len, remaining;
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const struct firmware *fw = NULL;
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u8 *fw_file = MN88473_FIRMWARE;
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dev_dbg(&dev->i2c->dev, "%s:\n", __func__);
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if (dev->warm)
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return 0;
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/* request the firmware, this will block and timeout */
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ret = request_firmware(&fw, fw_file, dev->i2c->dev.parent);
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if (ret) {
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dev_err(&dev->i2c->dev, "%s: firmare file '%s' not found\n",
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KBUILD_MODNAME, fw_file);
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goto err;
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}
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dev_info(&dev->i2c->dev, "%s: downloading firmware from file '%s'\n",
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KBUILD_MODNAME, fw_file);
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ret = mn88473_wreg(dev, 0x18f5, 0x03);
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if (ret)
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goto err;
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for (remaining = fw->size; remaining > 0;
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remaining -= (dev->cfg->i2c_wr_max - 1)) {
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len = remaining;
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if (len > (dev->cfg->i2c_wr_max - 1))
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len = (dev->cfg->i2c_wr_max - 1);
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ret = mn88473_wregs(dev, 0x18f6,
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&fw->data[fw->size - remaining], len);
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if (ret) {
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dev_err(&dev->i2c->dev,
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"%s: firmware download failed=%d\n",
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KBUILD_MODNAME, ret);
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goto err;
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}
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}
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ret = mn88473_wreg(dev, 0x18f5, 0x00);
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if (ret)
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goto err;
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release_firmware(fw);
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fw = NULL;
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/* warm state */
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dev->warm = true;
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return 0;
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err:
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if (fw)
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release_firmware(fw);
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dev_dbg(&dev->i2c->dev, "%s: failed=%d\n", __func__, ret);
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return ret;
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}
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static int mn88473_sleep(struct dvb_frontend *fe)
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{
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struct mn88473_dev *dev = fe->demodulator_priv;
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int ret;
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dev_dbg(&dev->i2c->dev, "%s:\n", __func__);
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ret = mn88473_wreg(dev, 0x1c05, 0x3e);
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if (ret)
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goto err;
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dev->delivery_system = SYS_UNDEFINED;
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return 0;
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err:
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dev_dbg(&dev->i2c->dev, "%s: failed=%d\n", __func__, ret);
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return ret;
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}
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static void mn88473_release(struct dvb_frontend *fe)
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{
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struct mn88473_dev *dev = fe->demodulator_priv;
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kfree(dev);
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}
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struct dvb_frontend *mn88473_attach(const struct mn88473_config *cfg,
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struct i2c_adapter *i2c)
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{
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int ret;
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struct mn88473_dev *dev;
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u8 u8tmp;
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dev_dbg(&i2c->dev, "%s:\n", __func__);
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/* allocate memory for the internal state */
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dev = kzalloc(sizeof(struct mn88473_dev), GFP_KERNEL);
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if (!dev) {
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ret = -ENOMEM;
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dev_err(&i2c->dev, "%s: kzalloc() failed\n", KBUILD_MODNAME);
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goto err;
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}
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dev->cfg = cfg;
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dev->i2c = i2c;
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/* check demod responds to I2C */
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ret = mn88473_rreg(dev, 0x1c00, &u8tmp);
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if (ret)
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goto err;
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/* create dvb_frontend */
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memcpy(&dev->fe.ops, &mn88473_ops, sizeof(struct dvb_frontend_ops));
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dev->fe.demodulator_priv = dev;
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return &dev->fe;
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err:
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dev_dbg(&i2c->dev, "%s: failed=%d\n", __func__, ret);
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kfree(dev);
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return NULL;
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}
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EXPORT_SYMBOL(mn88473_attach);
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static struct dvb_frontend_ops mn88473_ops = {
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.delsys = {SYS_DVBC_ANNEX_AC},
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.info = {
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.name = "Panasonic MN88473",
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.caps = FE_CAN_FEC_1_2 |
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FE_CAN_FEC_2_3 |
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FE_CAN_FEC_3_4 |
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FE_CAN_FEC_5_6 |
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FE_CAN_FEC_7_8 |
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FE_CAN_FEC_AUTO |
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FE_CAN_QPSK |
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FE_CAN_QAM_16 |
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FE_CAN_QAM_32 |
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FE_CAN_QAM_64 |
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FE_CAN_QAM_128 |
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FE_CAN_QAM_256 |
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FE_CAN_QAM_AUTO |
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FE_CAN_TRANSMISSION_MODE_AUTO |
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FE_CAN_GUARD_INTERVAL_AUTO |
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FE_CAN_HIERARCHY_AUTO |
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FE_CAN_MUTE_TS |
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FE_CAN_2G_MODULATION |
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FE_CAN_MULTISTREAM
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},
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.release = mn88473_release,
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.get_tune_settings = mn88473_get_tune_settings,
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.init = mn88473_init,
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.sleep = mn88473_sleep,
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.set_frontend = mn88473_set_frontend,
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.read_status = mn88473_read_status,
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};
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MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
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MODULE_DESCRIPTION("Panasonic MN88473 DVB-T/T2/C demodulator driver");
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MODULE_LICENSE("GPL");
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MODULE_FIRMWARE(MN88473_FIRMWARE);
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46
drivers/media/dvb-frontends/mn88473.h
Normal file
46
drivers/media/dvb-frontends/mn88473.h
Normal file
@ -0,0 +1,46 @@
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/*
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* Panasonic MN88473 DVB-T/T2/C demodulator driver
|
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*
|
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* Copyright (C) 2014 Antti Palosaari <crope@iki.fi>
|
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*
|
||||
* This program is free software; you can redistribute it and/or modify
|
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* 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.
|
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*
|
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* 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.
|
||||
*/
|
||||
|
||||
#ifndef MN88473_H
|
||||
#define MN88473_H
|
||||
|
||||
#include <linux/dvb/frontend.h>
|
||||
|
||||
struct mn88473_config {
|
||||
/*
|
||||
* max bytes I2C client could write
|
||||
* Value must be set.
|
||||
*/
|
||||
int i2c_wr_max;
|
||||
};
|
||||
|
||||
#if IS_ENABLED(CONFIG_DVB_MN88473)
|
||||
extern struct dvb_frontend *mn88473_attach(
|
||||
const struct mn88473_config *cfg,
|
||||
struct i2c_adapter *i2c
|
||||
);
|
||||
#else
|
||||
static inline struct dvb_frontend *mn88473_attach(
|
||||
const struct mn88473_config *cfg,
|
||||
struct i2c_adapter *i2c
|
||||
)
|
||||
{
|
||||
dev_warn(&i2c->dev, "%s: driver disabled by Kconfig\n", __func__);
|
||||
return NULL;
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif
|
||||
34
drivers/media/dvb-frontends/mn88473_priv.h
Normal file
34
drivers/media/dvb-frontends/mn88473_priv.h
Normal file
@ -0,0 +1,34 @@
|
||||
/*
|
||||
* Panasonic MN88473 DVB-T/T2/C demodulator driver
|
||||
*
|
||||
* Copyright (C) 2014 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.
|
||||
*/
|
||||
|
||||
#ifndef MN88473_PRIV_H
|
||||
#define MN88473_PRIV_H
|
||||
|
||||
#include "dvb_frontend.h"
|
||||
#include "mn88473.h"
|
||||
#include <linux/firmware.h>
|
||||
|
||||
#define MN88473_FIRMWARE "dvb-demod-mn88473-01.fw"
|
||||
|
||||
struct mn88473_dev {
|
||||
struct i2c_adapter *i2c;
|
||||
const struct mn88473_config *cfg;
|
||||
struct dvb_frontend fe;
|
||||
fe_delivery_system_t delivery_system;
|
||||
bool warm; /* FW running */
|
||||
};
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue
Block a user