Hi Michael,
A bit of background. The cx24117 is a dual tuner/demod and both share
a single i2c bus.
The way I found (at that time) to share the same i2c bus on 2
different frontend instances was to create a mutex that will deal with
concurrent i2c bus accesses when both FEs will try to issue a command
to the demod.
So I created a struct cx24117_priv that both frontends share (the
mutex is in there among other shared variables) and how I pass a
pointer to that struct to both instances of the cx24117 is through the
attach function.
When attaching the cx24117, this should happen:
1st attach call: the passed pointer is NULL so the attach function
will know that it is the first demod being attached.
2nd attach call: the passed pointer is pointing to the first FE, so it
will know that theres already a priv struct allocated and gets it.
Personally I also don't like this solution, but it was the only way I
found to do it from cx23885 module.
I'll be glad to change the method if a better solution is provided.
Thanks and Regards,
Luis
2013/10/2 Michael Krufky <mkrufky@xxxxxxxxxxx>:
> On Wed, Jul 24, 2013 at 11:37 AM, Antti Palosaari <crope@xxxxxx> wrote:
>> On 07/24/2013 06:18 PM, Luis Alves wrote:
>>>
>>> v4:
>>> Patch order fixed.
>>> Changed some msleep's to clear checkpatch warning.
>>>
>>>
>>> Signed-off-by: Luis Alves <ljalvs@xxxxxxxxx>
>>
>>
>> Reviewed-by: Antti Palosaari <crope@xxxxxx>
>>
>>
>>
>>> ---
>>> drivers/media/dvb-frontends/Kconfig | 7 +
>>> drivers/media/dvb-frontends/Makefile | 1 +
>>> drivers/media/dvb-frontends/cx24117.c | 1621
>>> +++++++++++++++++++++++++++++++++
>>> drivers/media/dvb-frontends/cx24117.h | 47 +
>>> 4 files changed, 1676 insertions(+)
>>> create mode 100644 drivers/media/dvb-frontends/cx24117.c
>>> create mode 100644 drivers/media/dvb-frontends/cx24117.h
>>>
>>> diff --git a/drivers/media/dvb-frontends/Kconfig
>>> b/drivers/media/dvb-frontends/Kconfig
>>> index 0e2ec6f..bddbab4 100644
>>> --- a/drivers/media/dvb-frontends/Kconfig
>>> +++ b/drivers/media/dvb-frontends/Kconfig
>>> @@ -200,6 +200,13 @@ config DVB_CX24116
>>> help
>>> A DVB-S/S2 tuner module. Say Y when you want to support this
>>> frontend.
>>>
>>> +config DVB_CX24117
>>> + tristate "Conexant CX24117 based"
>>> + depends on DVB_CORE && I2C
>>> + default m if !MEDIA_SUBDRV_AUTOSELECT
>>> + help
>>> + A Dual DVB-S/S2 tuner module. Say Y when you want to support
>>> this frontend.
>>> +
>>> config DVB_SI21XX
>>> tristate "Silicon Labs SI21XX based"
>>> depends on DVB_CORE && I2C
>>> diff --git a/drivers/media/dvb-frontends/Makefile
>>> b/drivers/media/dvb-frontends/Makefile
>>> index cebc0fa..f9cb43d 100644
>>> --- a/drivers/media/dvb-frontends/Makefile
>>> +++ b/drivers/media/dvb-frontends/Makefile
>>> @@ -76,6 +76,7 @@ obj-$(CONFIG_DVB_ATBM8830) += atbm8830.o
>>> obj-$(CONFIG_DVB_DUMMY_FE) += dvb_dummy_fe.o
>>> obj-$(CONFIG_DVB_AF9013) += af9013.o
>>> obj-$(CONFIG_DVB_CX24116) += cx24116.o
>>> +obj-$(CONFIG_DVB_CX24117) += cx24117.o
>>> obj-$(CONFIG_DVB_SI21XX) += si21xx.o
>>> obj-$(CONFIG_DVB_STV0288) += stv0288.o
>>> obj-$(CONFIG_DVB_STB6000) += stb6000.o
>>> diff --git a/drivers/media/dvb-frontends/cx24117.c
>>> b/drivers/media/dvb-frontends/cx24117.c
>>> new file mode 100644
>>> index 0000000..3b63913
>>> --- /dev/null
>>> +++ b/drivers/media/dvb-frontends/cx24117.c
>>> @@ -0,0 +1,1621 @@
>>> +/*
>>> + Conexant cx24117/cx24132 - Dual DVBS/S2 Satellite demod/tuner driver
>>> +
>>> + Copyright (C) 2013 Luis Alves <ljalvs@xxxxxxxxx>
>>> + July, 6th 2013
>>> + First release based on cx24116 driver by:
>>> + Steven Toth and Georg Acher, Darron Broad, Igor Liplianin
>>> + Cards currently supported:
>>> + TBS6980 - Dual DVBS/S2 PCIe card
>>> + TBS6981 - Dual DVBS/S2 PCIe card
>>> +
>>> + 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 <linux/slab.h>
>>> +#include <linux/kernel.h>
>>> +#include <linux/module.h>
>>> +#include <linux/moduleparam.h>
>>> +#include <linux/init.h>
>>> +#include <linux/firmware.h>
>>> +
>>> +#include "dvb_frontend.h"
>>> +#include "cx24117.h"
>>> +
>>> +
>>> +#define CX24117_DEFAULT_FIRMWARE "dvb-fe-cx24117.fw"
>>> +#define CX24117_SEARCH_RANGE_KHZ 5000
>>> +
>>> +/* known registers */
>>> +#define CX24117_REG_COMMAND (0x00) /* command buffer */
>>> +#define CX24117_REG_EXECUTE (0x1f) /* execute command */
>>> +
>>> +#define CX24117_REG_FREQ3_0 (0x34) /* frequency */
>>> +#define CX24117_REG_FREQ2_0 (0x35)
>>> +#define CX24117_REG_FREQ1_0 (0x36)
>>> +#define CX24117_REG_STATE0 (0x39)
>>> +#define CX24117_REG_SSTATUS0 (0x3a) /* demod0 signal high /
>>> status */
>>> +#define CX24117_REG_SIGNAL0 (0x3b)
>>> +#define CX24117_REG_FREQ5_0 (0x3c) /* +-freq */
>>> +#define CX24117_REG_FREQ6_0 (0x3d)
>>> +#define CX24117_REG_SRATE2_0 (0x3e) /* +- 1000 * srate */
>>> +#define CX24117_REG_SRATE1_0 (0x3f)
>>> +#define CX24117_REG_QUALITY2_0 (0x40)
>>> +#define CX24117_REG_QUALITY1_0 (0x41)
>>> +
>>> +#define CX24117_REG_BER4_0 (0x47)
>>> +#define CX24117_REG_BER3_0 (0x48)
>>> +#define CX24117_REG_BER2_0 (0x49)
>>> +#define CX24117_REG_BER1_0 (0x4a)
>>> +#define CX24117_REG_DVBS_UCB2_0 (0x4b)
>>> +#define CX24117_REG_DVBS_UCB1_0 (0x4c)
>>> +#define CX24117_REG_DVBS2_UCB2_0 (0x50)
>>> +#define CX24117_REG_DVBS2_UCB1_0 (0x51)
>>> +#define CX24117_REG_QSTATUS0 (0x93)
>>> +#define CX24117_REG_CLKDIV0 (0xe6)
>>> +#define CX24117_REG_RATEDIV0 (0xf0)
>>> +
>>> +
>>> +#define CX24117_REG_FREQ3_1 (0x55) /* frequency */
>>> +#define CX24117_REG_FREQ2_1 (0x56)
>>> +#define CX24117_REG_FREQ1_1 (0x57)
>>> +#define CX24117_REG_STATE1 (0x5a)
>>> +#define CX24117_REG_SSTATUS1 (0x5b) /* demod1 signal high /
>>> status */
>>> +#define CX24117_REG_SIGNAL1 (0x5c)
>>> +#define CX24117_REG_FREQ5_1 (0x5d) /* +- freq */
>>> +#define CX24117_REG_FREQ4_1 (0x5e)
>>> +#define CX24117_REG_SRATE2_1 (0x5f)
>>> +#define CX24117_REG_SRATE1_1 (0x60)
>>> +#define CX24117_REG_QUALITY2_1 (0x61)
>>> +#define CX24117_REG_QUALITY1_1 (0x62)
>>> +#define CX24117_REG_BER4_1 (0x68)
>>> +#define CX24117_REG_BER3_1 (0x69)
>>> +#define CX24117_REG_BER2_1 (0x6a)
>>> +#define CX24117_REG_BER1_1 (0x6b)
>>> +#define CX24117_REG_DVBS_UCB2_1 (0x6c)
>>> +#define CX24117_REG_DVBS_UCB1_1 (0x6d)
>>> +#define CX24117_REG_DVBS2_UCB2_1 (0x71)
>>> +#define CX24117_REG_DVBS2_UCB1_1 (0x72)
>>> +#define CX24117_REG_QSTATUS1 (0x9f)
>>> +#define CX24117_REG_CLKDIV1 (0xe7)
>>> +#define CX24117_REG_RATEDIV1 (0xf1)
>>> +
>>> +
>>> +/* arg buffer size */
>>> +#define CX24117_ARGLEN (0x1e)
>>> +
>>> +/* rolloff */
>>> +#define CX24117_ROLLOFF_020 (0x00)
>>> +#define CX24117_ROLLOFF_025 (0x01)
>>> +#define CX24117_ROLLOFF_035 (0x02)
>>> +
>>> +/* pilot bit */
>>> +#define CX24117_PILOT_OFF (0x00)
>>> +#define CX24117_PILOT_ON (0x40)
>>> +#define CX24117_PILOT_AUTO (0x80)
>>> +
>>> +/* signal status */
>>> +#define CX24117_HAS_SIGNAL (0x01)
>>> +#define CX24117_HAS_CARRIER (0x02)
>>> +#define CX24117_HAS_VITERBI (0x04)
>>> +#define CX24117_HAS_SYNCLOCK (0x08)
>>> +#define CX24117_STATUS_MASK (0x0f)
>>> +#define CX24117_SIGNAL_MASK (0xc0)
>>> +
>>> +
>>> +/* arg offset for DiSEqC */
>>> +#define CX24117_DISEQC_DEMOD (1)
>>> +#define CX24117_DISEQC_BURST (2)
>>> +#define CX24117_DISEQC_ARG3_2 (3) /* unknown value=2 */
>>> +#define CX24117_DISEQC_ARG4_0 (4) /* unknown value=0 */
>>> +#define CX24117_DISEQC_ARG5_0 (5) /* unknown value=0 */
>>> +#define CX24117_DISEQC_MSGLEN (6)
>>> +#define CX24117_DISEQC_MSGOFS (7)
>>> +
>>> +/* DiSEqC burst */
>>> +#define CX24117_DISEQC_MINI_A (0)
>>> +#define CX24117_DISEQC_MINI_B (1)
>>> +
>>> +
>>> +#define CX24117_PNE (0) /* 0 disabled / 2 enabled */
>>> +#define CX24117_OCC (1) /* 0 disabled / 1 enabled */
>>> +
>>> +
>>> +enum cmds {
>>> + CMD_SET_VCO = 0x10,
>>> + CMD_TUNEREQUEST = 0x11,
>>> + CMD_MPEGCONFIG = 0x13,
>>> + CMD_TUNERINIT = 0x14,
>>> + CMD_LNBSEND = 0x21, /* Formerly CMD_SEND_DISEQC */
>>> + CMD_LNBDCLEVEL = 0x22,
>>> + CMD_SET_TONE = 0x23,
>>> + CMD_UPDFWVERS = 0x35,
>>> + CMD_TUNERSLEEP = 0x36,
>>> +};
>>> +
>>> +/* The Demod/Tuner can't easily provide these, we cache them */
>>> +struct cx24117_tuning {
>>> + u32 frequency;
>>> + u32 symbol_rate;
>>> + fe_spectral_inversion_t inversion;
>>> + fe_code_rate_t fec;
>>> +
>>> + fe_delivery_system_t delsys;
>>> + fe_modulation_t modulation;
>>> + fe_pilot_t pilot;
>>> + fe_rolloff_t rolloff;
>>> +
>>> + /* Demod values */
>>> + u8 fec_val;
>>> + u8 fec_mask;
>>> + u8 inversion_val;
>>> + u8 pilot_val;
>>> + u8 rolloff_val;
>>> +};
>>> +
>>> +/* Basic commands that are sent to the firmware */
>>> +struct cx24117_cmd {
>>> + u8 len;
>>> + u8 args[CX24117_ARGLEN];
>>> +};
>>> +
>>> +/* common to both fe's */
>>> +struct cx24117_priv {
>>> + u8 demod_address;
>>> + struct i2c_adapter *i2c;
>>> + u8 skip_fw_load;
>>> +
>>> + struct mutex fe_lock;
>>> + atomic_t fe_nr;
>>> +};
>>> +
>>> +/* one per each fe */
>>> +struct cx24117_state {
>>> + struct cx24117_priv *priv;
>>> + struct dvb_frontend frontend;
>>> +
>>> + struct cx24117_tuning dcur;
>>> + struct cx24117_tuning dnxt;
>>> + struct cx24117_cmd dsec_cmd;
>>> +
>>> + int demod;
>>> +};
>>> +
>>> +/* modfec (modulation and FEC) lookup table */
>>> +/* Check cx24116.c for a detailed description of each field */
>>> +static struct cx24117_modfec {
>>> + fe_delivery_system_t delivery_system;
>>> + fe_modulation_t modulation;
>>> + fe_code_rate_t fec;
>>> + u8 mask; /* In DVBS mode this is used to autodetect */
>>> + u8 val; /* Passed to the firmware to indicate mode
>>> selection */
>>> +} cx24117_modfec_modes[] = {
>>> + /* QPSK. For unknown rates we set hardware to auto detect 0xfe
>>> 0x30 */
>>> +
>>> + /*mod fec mask val */
>>> + { SYS_DVBS, QPSK, FEC_NONE, 0xfe, 0x30 },
>>> + { SYS_DVBS, QPSK, FEC_1_2, 0x02, 0x2e }, /* 00000010 00101110 */
>>> + { SYS_DVBS, QPSK, FEC_2_3, 0x04, 0x2f }, /* 00000100 00101111 */
>>> + { SYS_DVBS, QPSK, FEC_3_4, 0x08, 0x30 }, /* 00001000 00110000 */
>>> + { SYS_DVBS, QPSK, FEC_4_5, 0xfe, 0x30 }, /* 000?0000 ? */
>>> + { SYS_DVBS, QPSK, FEC_5_6, 0x20, 0x31 }, /* 00100000 00110001 */
>>> + { SYS_DVBS, QPSK, FEC_6_7, 0xfe, 0x30 }, /* 0?000000 ? */
>>> + { SYS_DVBS, QPSK, FEC_7_8, 0x80, 0x32 }, /* 10000000 00110010 */
>>> + { SYS_DVBS, QPSK, FEC_8_9, 0xfe, 0x30 }, /* 0000000? ? */
>>> + { SYS_DVBS, QPSK, FEC_AUTO, 0xfe, 0x30 },
>>> + /* NBC-QPSK */
>>> + { SYS_DVBS2, QPSK, FEC_NONE, 0x00, 0x00 },
>>> + { SYS_DVBS2, QPSK, FEC_1_2, 0x00, 0x04 },
>>> + { SYS_DVBS2, QPSK, FEC_3_5, 0x00, 0x05 },
>>> + { SYS_DVBS2, QPSK, FEC_2_3, 0x00, 0x06 },
>>> + { SYS_DVBS2, QPSK, FEC_3_4, 0x00, 0x07 },
>>> + { SYS_DVBS2, QPSK, FEC_4_5, 0x00, 0x08 },
>>> + { SYS_DVBS2, QPSK, FEC_5_6, 0x00, 0x09 },
>>> + { SYS_DVBS2, QPSK, FEC_8_9, 0x00, 0x0a },
>>> + { SYS_DVBS2, QPSK, FEC_9_10, 0x00, 0x0b },
>>> + { SYS_DVBS2, QPSK, FEC_AUTO, 0x00, 0x00 },
>>> + /* 8PSK */
>>> + { SYS_DVBS2, PSK_8, FEC_NONE, 0x00, 0x00 },
>>> + { SYS_DVBS2, PSK_8, FEC_3_5, 0x00, 0x0c },
>>> + { SYS_DVBS2, PSK_8, FEC_2_3, 0x00, 0x0d },
>>> + { SYS_DVBS2, PSK_8, FEC_3_4, 0x00, 0x0e },
>>> + { SYS_DVBS2, PSK_8, FEC_5_6, 0x00, 0x0f },
>>> + { SYS_DVBS2, PSK_8, FEC_8_9, 0x00, 0x10 },
>>> + { SYS_DVBS2, PSK_8, FEC_9_10, 0x00, 0x11 },
>>> + { SYS_DVBS2, PSK_8, FEC_AUTO, 0x00, 0x00 },
>>> + /*
>>> + * 'val' can be found in the FECSTATUS register when tuning.
>>> + * FECSTATUS will give the actual FEC in use if tuning was
>>> successful.
>>> + */
>>> +};
>>> +
>>> +
>>> +static int cx24117_writereg(struct cx24117_state *state, u8 reg, u8 data)
>>> +{
>>> + u8 buf[] = { reg, data };
>>> + struct i2c_msg msg = { .addr = state->priv->demod_address,
>>> + .flags = 0, .buf = buf, .len = 2 };
>>> + int ret;
>>> +
>>> + dev_dbg(&state->priv->i2c->dev,
>>> + "%s() demod%d i2c wr @0x%02x=0x%02x\n",
>>> + __func__, state->demod, reg, data);
>>> +
>>> + ret = i2c_transfer(state->priv->i2c, &msg, 1);
>>> + if (ret < 0) {
>>> + dev_warn(&state->priv->i2c->dev,
>>> + "%s: demod%d i2c wr err(%i) @0x%02x=0x%02x\n",
>>> + KBUILD_MODNAME, state->demod, ret, reg, data);
>>> + return ret;
>>> + }
>>> + return 0;
>>> +}
>>> +
>>> +static int cx24117_writecmd(struct cx24117_state *state,
>>> + struct cx24117_cmd *cmd)
>>> +{
>>> + struct i2c_msg msg;
>>> + u8 buf[CX24117_ARGLEN+1];
>>> + int ret;
>>> +
>>> + dev_dbg(&state->priv->i2c->dev,
>>> + "%s() demod%d i2c wr cmd len=%d\n",
>>> + __func__, state->demod, cmd->len);
>>> +
>>> + buf[0] = CX24117_REG_COMMAND;
>>> + memcpy(&buf[1], cmd->args, cmd->len);
>>> +
>>> + msg.addr = state->priv->demod_address;
>>> + msg.flags = 0;
>>> + msg.len = cmd->len+1;
>>> + msg.buf = buf;
>>> + ret = i2c_transfer(state->priv->i2c, &msg, 1);
>>> + if (ret < 0) {
>>> + dev_warn(&state->priv->i2c->dev,
>>> + "%s: demod%d i2c wr cmd err(%i) len=%d\n",
>>> + KBUILD_MODNAME, state->demod, ret, cmd->len);
>>> + return ret;
>>> + }
>>> + return 0;
>>> +}
>>> +
>>> +static int cx24117_readreg(struct cx24117_state *state, u8 reg)
>>> +{
>>> + int ret;
>>> + u8 recv = 0;
>>> + struct i2c_msg msg[] = {
>>> + { .addr = state->priv->demod_address, .flags = 0,
>>> + .buf = ®, .len = 1 },
>>> + { .addr = state->priv->demod_address, .flags = I2C_M_RD,
>>> + .buf = &recv, .len = 1 }
>>> + };
>>> +
>>> + ret = i2c_transfer(state->priv->i2c, msg, 2);
>>> + if (ret < 0) {
>>> + dev_warn(&state->priv->i2c->dev,
>>> + "%s: demod%d i2c rd err(%d) @0x%x\n",
>>> + KBUILD_MODNAME, state->demod, ret, reg);
>>> + return ret;
>>> + }
>>> +
>>> + dev_dbg(&state->priv->i2c->dev, "%s() demod%d i2c rd
>>> @0x%02x=0x%02x\n",
>>> + __func__, state->demod, reg, recv);
>>> +
>>> + return recv;
>>> +}
>>> +
>>> +static int cx24117_readregN(struct cx24117_state *state,
>>> + u8 reg, u8 *buf, int len)
>>> +{
>>> + int ret;
>>> + struct i2c_msg msg[] = {
>>> + { .addr = state->priv->demod_address, .flags = 0,
>>> + .buf = ®, .len = 1 },
>>> + { .addr = state->priv->demod_address, .flags = I2C_M_RD,
>>> + .buf = buf, .len = len }
>>> + };
>>> +
>>> + ret = i2c_transfer(state->priv->i2c, msg, 2);
>>> + if (ret < 0) {
>>> + dev_warn(&state->priv->i2c->dev,
>>> + "%s: demod%d i2c rd err(%d) @0x%x\n",
>>> + KBUILD_MODNAME, state->demod, ret, reg);
>>> + return ret;
>>> + }
>>> + return 0;
>>> +}
>>> +
>>> +static int cx24117_set_inversion(struct cx24117_state *state,
>>> + fe_spectral_inversion_t inversion)
>>> +{
>>> + dev_dbg(&state->priv->i2c->dev, "%s(%d) demod%d\n",
>>> + __func__, inversion, state->demod);
>>> +
>>> + switch (inversion) {
>>> + case INVERSION_OFF:
>>> + state->dnxt.inversion_val = 0x00;
>>> + break;
>>> + case INVERSION_ON:
>>> + state->dnxt.inversion_val = 0x04;
>>> + break;
>>> + case INVERSION_AUTO:
>>> + state->dnxt.inversion_val = 0x0C;
>>> + break;
>>> + default:
>>> + return -EINVAL;
>>> + }
>>> +
>>> + state->dnxt.inversion = inversion;
>>> +
>>> + return 0;
>>> +}
>>> +
>>> +static int cx24117_lookup_fecmod(struct cx24117_state *state,
>>> + fe_delivery_system_t d, fe_modulation_t m, fe_code_rate_t f)
>>> +{
>>> + int i, ret = -EINVAL;
>>> +
>>> + dev_dbg(&state->priv->i2c->dev,
>>> + "%s(demod(0x%02x,0x%02x) demod%d\n",
>>> + __func__, m, f, state->demod);
>>> +
>>> + for (i = 0; i < ARRAY_SIZE(cx24117_modfec_modes); i++) {
>>> + if ((d == cx24117_modfec_modes[i].delivery_system) &&
>>> + (m == cx24117_modfec_modes[i].modulation) &&
>>> + (f == cx24117_modfec_modes[i].fec)) {
>>> + ret = i;
>>> + break;
>>> + }
>>> + }
>>> +
>>> + return ret;
>>> +}
>>> +
>>> +static int cx24117_set_fec(struct cx24117_state *state,
>>> + fe_delivery_system_t delsys, fe_modulation_t mod, fe_code_rate_t
>>> fec)
>>> +{
>>> + int ret;
>>> +
>>> + dev_dbg(&state->priv->i2c->dev,
>>> + "%s(0x%02x,0x%02x) demod%d\n",
>>> + __func__, mod, fec, state->demod);
>>> +
>>> + ret = cx24117_lookup_fecmod(state, delsys, mod, fec);
>>> + if (ret < 0)
>>> + return ret;
>>> +
>>> + state->dnxt.fec = fec;
>>> + state->dnxt.fec_val = cx24117_modfec_modes[ret].val;
>>> + state->dnxt.fec_mask = cx24117_modfec_modes[ret].mask;
>>> + dev_dbg(&state->priv->i2c->dev,
>>> + "%s() demod%d mask/val = 0x%02x/0x%02x\n", __func__,
>>> + state->demod, state->dnxt.fec_mask, state->dnxt.fec_val);
>>> +
>>> + return 0;
>>> +}
>>> +
>>> +static int cx24117_set_symbolrate(struct cx24117_state *state, u32 rate)
>>> +{
>>> + dev_dbg(&state->priv->i2c->dev, "%s(%d) demod%d\n",
>>> + __func__, rate, state->demod);
>>> +
>>> + state->dnxt.symbol_rate = rate;
>>> +
>>> + dev_dbg(&state->priv->i2c->dev,
>>> + "%s() demod%d symbol_rate = %d\n",
>>> + __func__, state->demod, rate);
>>> +
>>> + return 0;
>>> +}
>>> +
>>> +static int cx24117_load_firmware(struct dvb_frontend *fe,
>>> + const struct firmware *fw);
>>> +
>>> +static int cx24117_firmware_ondemand(struct dvb_frontend *fe)
>>> +{
>>> + struct cx24117_state *state = fe->demodulator_priv;
>>> + const struct firmware *fw;
>>> + int ret = 0;
>>> +
>>> + dev_dbg(&state->priv->i2c->dev, "%s() demod%d skip_fw_load=%d\n",
>>> + __func__, state->demod, state->priv->skip_fw_load);
>>> +
>>> + if (state->priv->skip_fw_load)
>>> + return 0;
>>> +
>>> + /* check if firmware if already running */
>>> + if (cx24117_readreg(state, 0xeb) != 0xa) {
>>> + /* Load firmware */
>>> + /* request the firmware, this will block until loaded */
>>> + dev_dbg(&state->priv->i2c->dev,
>>> + "%s: Waiting for firmware upload (%s)...\n",
>>> + __func__, CX24117_DEFAULT_FIRMWARE);
>>> + ret = request_firmware(&fw, CX24117_DEFAULT_FIRMWARE,
>>> + state->priv->i2c->dev.parent);
>>> + dev_dbg(&state->priv->i2c->dev,
>>> + "%s: Waiting for firmware upload(2)...\n",
>>> __func__);
>>> + if (ret) {
>>> + dev_err(&state->priv->i2c->dev,
>>> + "%s: No firmware uploaded "
>>> + "(timeout or file not found?)\n",
>>> __func__);
>>> + return ret;
>>> + }
>>> +
>>> + /* Make sure we don't recurse back through here
>>> + * during loading */
>>> + state->priv->skip_fw_load = 1;
>>> +
>>> + ret = cx24117_load_firmware(fe, fw);
>>> + if (ret)
>>> + dev_err(&state->priv->i2c->dev,
>>> + "%s: Writing firmware failed\n",
>>> __func__);
>>> + release_firmware(fw);
>>> +
>>> + dev_info(&state->priv->i2c->dev,
>>> + "%s: Firmware upload %s\n", __func__,
>>> + ret == 0 ? "complete" : "failed");
>>> +
>>> + /* Ensure firmware is always loaded if required */
>>> + state->priv->skip_fw_load = 0;
>>> + }
>>> +
>>> + return ret;
>>> +}
>>> +
>>> +/* Take a basic firmware command structure, format it
>>> + * and forward it for processing
>>> + */
>>> +static int cx24117_cmd_execute_nolock(struct dvb_frontend *fe,
>>> + struct cx24117_cmd *cmd)
>>> +{
>>> + struct cx24117_state *state = fe->demodulator_priv;
>>> + int i, ret;
>>> +
>>> + dev_dbg(&state->priv->i2c->dev, "%s() demod%d\n",
>>> + __func__, state->demod);
>>> +
>>> + /* Load the firmware if required */
>>> + ret = cx24117_firmware_ondemand(fe);
>>> + if (ret != 0)
>>> + return ret;
>>> +
>>> + /* Write the command */
>>> + cx24117_writecmd(state, cmd);
>>> +
>>> + /* Start execution and wait for cmd to terminate */
>>> + cx24117_writereg(state, CX24117_REG_EXECUTE, 0x01);
>>> + i = 0;
>>> + while (cx24117_readreg(state, CX24117_REG_EXECUTE)) {
>>> + msleep(20);
>>> + if (i++ > 40) {
>>> + /* Avoid looping forever if the firmware does
>>> + not respond */
>>> + dev_warn(&state->priv->i2c->dev,
>>> + "%s() Firmware not responding\n",
>>> __func__);
>>> + return -EIO;
>>> + }
>>> + }
>>> + return 0;
>>> +}
>>> +
>>> +static int cx24117_cmd_execute(struct dvb_frontend *fe, struct
>>> cx24117_cmd *cmd)
>>> +{
>>> + struct cx24117_state *state = fe->demodulator_priv;
>>> + int ret;
>>> +
>>> + mutex_lock(&state->priv->fe_lock);
>>> + ret = cx24117_cmd_execute_nolock(fe, cmd);
>>> + mutex_unlock(&state->priv->fe_lock);
>>> +
>>> + return ret;
>>> +}
>>> +
>>> +static int cx24117_load_firmware(struct dvb_frontend *fe,
>>> + const struct firmware *fw)
>>> +{
>>> + struct cx24117_state *state = fe->demodulator_priv;
>>> + struct cx24117_cmd cmd;
>>> + int i, ret;
>>> + unsigned char vers[4];
>>> +
>>> + struct i2c_msg msg;
>>> + u8 *buf;
>>> +
>>> + dev_dbg(&state->priv->i2c->dev,
>>> + "%s() demod%d FW is %zu bytes (%02x %02x .. %02x %02x)\n",
>>> + __func__, state->demod, fw->size, fw->data[0],
>>> fw->data[1],
>>> + fw->data[fw->size-2], fw->data[fw->size-1]);
>>> +
>>> + cx24117_writereg(state, 0xea, 0x00);
>>> + cx24117_writereg(state, 0xea, 0x01);
>>> + cx24117_writereg(state, 0xea, 0x00);
>>> +
>>> + cx24117_writereg(state, 0xce, 0x92);
>>> +
>>> + cx24117_writereg(state, 0xfb, 0x00);
>>> + cx24117_writereg(state, 0xfc, 0x00);
>>> +
>>> + cx24117_writereg(state, 0xc3, 0x04);
>>> + cx24117_writereg(state, 0xc4, 0x04);
>>> +
>>> + cx24117_writereg(state, 0xce, 0x00);
>>> + cx24117_writereg(state, 0xcf, 0x00);
>>> +
>>> + cx24117_writereg(state, 0xea, 0x00);
>>> + cx24117_writereg(state, 0xeb, 0x0c);
>>> + cx24117_writereg(state, 0xec, 0x06);
>>> + cx24117_writereg(state, 0xed, 0x05);
>>> + cx24117_writereg(state, 0xee, 0x03);
>>> + cx24117_writereg(state, 0xef, 0x05);
>>> +
>>> + cx24117_writereg(state, 0xf3, 0x03);
>>> + cx24117_writereg(state, 0xf4, 0x44);
>>> +
>>> + cx24117_writereg(state, CX24117_REG_RATEDIV0, 0x04);
>>> + cx24117_writereg(state, CX24117_REG_CLKDIV0, 0x02);
>>> +
>>> + cx24117_writereg(state, CX24117_REG_RATEDIV1, 0x04);
>>> + cx24117_writereg(state, CX24117_REG_CLKDIV1, 0x02);
>>> +
>>> + cx24117_writereg(state, 0xf2, 0x04);
>>> + cx24117_writereg(state, 0xe8, 0x02);
>>> + cx24117_writereg(state, 0xea, 0x01);
>>> + cx24117_writereg(state, 0xc8, 0x00);
>>> + cx24117_writereg(state, 0xc9, 0x00);
>>> + cx24117_writereg(state, 0xca, 0x00);
>>> + cx24117_writereg(state, 0xcb, 0x00);
>>> + cx24117_writereg(state, 0xcc, 0x00);
>>> + cx24117_writereg(state, 0xcd, 0x00);
>>> + cx24117_writereg(state, 0xe4, 0x03);
>>> + cx24117_writereg(state, 0xeb, 0x0a);
>>> +
>>> + cx24117_writereg(state, 0xfb, 0x00);
>>> + cx24117_writereg(state, 0xe0, 0x76);
>>> + cx24117_writereg(state, 0xf7, 0x81);
>>> + cx24117_writereg(state, 0xf8, 0x00);
>>> + cx24117_writereg(state, 0xf9, 0x00);
>>> +
>>> + buf = kmalloc(fw->size + 1, GFP_KERNEL);
>>> + if (buf == NULL) {
>>> + state->priv->skip_fw_load = 0;
>>> + return -ENOMEM;
>>> + }
>>> +
>>> + /* fw upload reg */
>>> + buf[0] = 0xfa;
>>> + memcpy(&buf[1], fw->data, fw->size);
>>> +
>>> + /* prepare i2c message to send */
>>> + msg.addr = state->priv->demod_address;
>>> + msg.flags = 0;
>>> + msg.len = fw->size + 1;
>>> + msg.buf = buf;
>>> +
>>> + /* send fw */
>>> + ret = i2c_transfer(state->priv->i2c, &msg, 1);
>>> + if (ret < 0)
>>> + return ret;
>>> +
>>> + kfree(buf);
>>> +
>>> + cx24117_writereg(state, 0xf7, 0x0c);
>>> + cx24117_writereg(state, 0xe0, 0x00);
>>> +
>>> + /* CMD 1B */
>>> + cmd.args[0] = 0x1b;
>>> + cmd.args[1] = 0x00;
>>> + cmd.args[2] = 0x01;
>>> + cmd.args[3] = 0x00;
>>> + cmd.len = 4;
>>> + ret = cx24117_cmd_execute_nolock(fe, &cmd);
>>> + if (ret != 0)
>>> + goto error;
>>> +
>>> + /* CMD 10 */
>>> + cmd.args[0] = CMD_SET_VCO;
>>> + cmd.args[1] = 0x06;
>>> + cmd.args[2] = 0x2b;
>>> + cmd.args[3] = 0xd8;
>>> + cmd.args[4] = 0xa5;
>>> + cmd.args[5] = 0xee;
>>> + cmd.args[6] = 0x03;
>>> + cmd.args[7] = 0x9d;
>>> + cmd.args[8] = 0xfc;
>>> + cmd.args[9] = 0x06;
>>> + cmd.args[10] = 0x02;
>>> + cmd.args[11] = 0x9d;
>>> + cmd.args[12] = 0xfc;
>>> + cmd.len = 13;
>>> + ret = cx24117_cmd_execute_nolock(fe, &cmd);
>>> + if (ret != 0)
>>> + goto error;
>>> +
>>> + /* CMD 15 */
>>> + cmd.args[0] = 0x15;
>>> + cmd.args[1] = 0x00;
>>> + cmd.args[2] = 0x01;
>>> + cmd.args[3] = 0x00;
>>> + cmd.args[4] = 0x00;
>>> + cmd.args[5] = 0x01;
>>> + cmd.args[6] = 0x01;
>>> + cmd.args[7] = 0x01;
>>> + cmd.args[8] = 0x00;
>>> + cmd.args[9] = 0x05;
>>> + cmd.args[10] = 0x02;
>>> + cmd.args[11] = 0x02;
>>> + cmd.args[12] = 0x00;
>>> + cmd.len = 13;
>>> + ret = cx24117_cmd_execute_nolock(fe, &cmd);
>>> + if (ret != 0)
>>> + goto error;
>>> +
>>> + /* CMD 13 */
>>> + cmd.args[0] = CMD_MPEGCONFIG;
>>> + cmd.args[1] = 0x00;
>>> + cmd.args[2] = 0x00;
>>> + cmd.args[3] = 0x00;
>>> + cmd.args[4] = 0x01;
>>> + cmd.args[5] = 0x00;
>>> + cmd.len = 6;
>>> + ret = cx24117_cmd_execute_nolock(fe, &cmd);
>>> + if (ret != 0)
>>> + goto error;
>>> +
>>> + /* CMD 14 */
>>> + for (i = 0; i < 2; i++) {
>>> + cmd.args[0] = CMD_TUNERINIT;
>>> + cmd.args[1] = (u8) i;
>>> + cmd.args[2] = 0x00;
>>> + cmd.args[3] = 0x05;
>>> + cmd.args[4] = 0x00;
>>> + cmd.args[5] = 0x00;
>>> + cmd.args[6] = 0x55;
>>> + cmd.args[7] = 0x00;
>>> + cmd.len = 8;
>>> + ret = cx24117_cmd_execute_nolock(fe, &cmd);
>>> + if (ret != 0)
>>> + goto error;
>>> + }
>>> +
>>> + cx24117_writereg(state, 0xce, 0xc0);
>>> + cx24117_writereg(state, 0xcf, 0x00);
>>> + cx24117_writereg(state, 0xe5, 0x04);
>>> +
>>> + /* Firmware CMD 35: Get firmware version */
>>> + cmd.args[0] = CMD_UPDFWVERS;
>>> + cmd.len = 2;
>>> + for (i = 0; i < 4; i++) {
>>> + cmd.args[1] = i;
>>> + ret = cx24117_cmd_execute_nolock(fe, &cmd);
>>> + if (ret != 0)
>>> + goto error;
>>> + vers[i] = cx24117_readreg(state, 0x33);
>>> + }
>>> + dev_info(&state->priv->i2c->dev,
>>> + "%s: FW version %i.%i.%i.%i\n", __func__,
>>> + vers[0], vers[1], vers[2], vers[3]);
>>> + return 0;
>>> +error:
>>> + state->priv->skip_fw_load = 0;
>>> + dev_err(&state->priv->i2c->dev, "%s() Error running FW.\n",
>>> __func__);
>>> + return ret;
>>> +}
>>> +
>>> +static int cx24117_read_status(struct dvb_frontend *fe, fe_status_t
>>> *status)
>>> +{
>>> + struct cx24117_state *state = fe->demodulator_priv;
>>> + int lock;
>>> +
>>> + lock = cx24117_readreg(state,
>>> + (state->demod == 0) ? CX24117_REG_SSTATUS0 :
>>> + CX24117_REG_SSTATUS1) &
>>> + CX24117_STATUS_MASK;
>>> +
>>> + dev_dbg(&state->priv->i2c->dev, "%s() demod%d status = 0x%02x\n",
>>> + __func__, state->demod, lock);
>>> +
>>> + *status = 0;
>>> +
>>> + if (lock & CX24117_HAS_SIGNAL)
>>> + *status |= FE_HAS_SIGNAL;
>>> + if (lock & CX24117_HAS_CARRIER)
>>> + *status |= FE_HAS_CARRIER;
>>> + if (lock & CX24117_HAS_VITERBI)
>>> + *status |= FE_HAS_VITERBI;
>>> + if (lock & CX24117_HAS_SYNCLOCK)
>>> + *status |= FE_HAS_SYNC | FE_HAS_LOCK;
>>> +
>>> + return 0;
>>> +}
>>> +
>>> +static int cx24117_read_ber(struct dvb_frontend *fe, u32 *ber)
>>> +{
>>> + struct cx24117_state *state = fe->demodulator_priv;
>>> + int ret;
>>> + u8 buf[4];
>>> + u8 base_reg = (state->demod == 0) ?
>>> + CX24117_REG_BER4_0 :
>>> + CX24117_REG_BER4_1;
>>> +
>>> + ret = cx24117_readregN(state, base_reg, buf, 4);
>>> + if (ret != 0)
>>> + return ret;
>>> +
>>> + *ber = (buf[0] << 24) | (buf[1] << 16) |
>>> + (buf[1] << 8) | buf[0];
>>> +
>>> + dev_dbg(&state->priv->i2c->dev, "%s() demod%d ber=0x%04x\n",
>>> + __func__, state->demod, *ber);
>>> +
>>> + return 0;
>>> +}
>>> +
>>> +static int cx24117_read_signal_strength(struct dvb_frontend *fe,
>>> + u16 *signal_strength)
>>> +{
>>> + struct cx24117_state *state = fe->demodulator_priv;
>>> + struct cx24117_cmd cmd;
>>> + int ret;
>>> + u16 sig_reading;
>>> + u8 buf[2];
>>> + u8 reg = (state->demod == 0) ?
>>> + CX24117_REG_SSTATUS0 : CX24117_REG_SSTATUS1;
>>> +
>>> + /* Firmware CMD 1A */
>>> + cmd.args[0] = 0x1a;
>>> + cmd.args[1] = (u8) state->demod;
>>> + cmd.len = 2;
>>> + ret = cx24117_cmd_execute(fe, &cmd);
>>> + if (ret != 0)
>>> + return ret;
>>> +
>>> + ret = cx24117_readregN(state, reg, buf, 2);
>>> + if (ret != 0)
>>> + return ret;
>>> + sig_reading = ((buf[0] & CX24117_SIGNAL_MASK) << 2) | buf[1];
>>> +
>>> + *signal_strength = -100 * sig_reading + 94324;
>>> +
>>> + dev_dbg(&state->priv->i2c->dev,
>>> + "%s() demod%d raw / cooked = 0x%04x / 0x%04x\n",
>>> + __func__, state->demod, sig_reading, *signal_strength);
>>> +
>>> + return 0;
>>> +}
>>> +
>>> +static int cx24117_read_snr(struct dvb_frontend *fe, u16 *snr)
>>> +{
>>> + struct cx24117_state *state = fe->demodulator_priv;
>>> + int ret;
>>> + u8 buf[2];
>>> + u8 reg = (state->demod == 0) ?
>>> + CX24117_REG_QUALITY2_0 : CX24117_REG_QUALITY2_1;
>>> +
>>> + ret = cx24117_readregN(state, reg, buf, 2);
>>> + if (ret != 0)
>>> + return ret;
>>> +
>>> + *snr = (buf[0] << 8) | buf[1];
>>> +
>>> + dev_dbg(&state->priv->i2c->dev,
>>> + "%s() demod%d snr = 0x%04x\n",
>>> + __func__, state->demod, *snr);
>>> +
>>> + return ret;
>>> +}
>>> +
>>> +static int cx24117_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
>>> +{
>>> + struct cx24117_state *state = fe->demodulator_priv;
>>> + fe_delivery_system_t delsys =
>>> fe->dtv_property_cache.delivery_system;
>>> + int ret;
>>> + u8 buf[2];
>>> + u8 reg = (state->demod == 0) ?
>>> + CX24117_REG_DVBS_UCB2_0 :
>>> + CX24117_REG_DVBS_UCB2_1;
>>> +
>>> + switch (delsys) {
>>> + case SYS_DVBS:
>>> + break;
>>> + case SYS_DVBS2:
>>> + reg += (CX24117_REG_DVBS2_UCB2_0 -
>>> CX24117_REG_DVBS_UCB2_0);
>>> + break;
>>> + default:
>>> + return -EINVAL;
>>> + }
>>> +
>>> + ret = cx24117_readregN(state, reg, buf, 2);
>>> + if (ret != 0)
>>> + return ret;
>>> + *ucblocks = (buf[0] << 8) | buf[1];
>>> +
>>> + dev_dbg(&state->priv->i2c->dev, "%s() demod%d ucb=0x%04x\n",
>>> + __func__, state->demod, *ucblocks);
>>> +
>>> + return 0;
>>> +}
>>> +
>>> +/* Overwrite the current tuning params, we are about to tune */
>>> +static void cx24117_clone_params(struct dvb_frontend *fe)
>>> +{
>>> + struct cx24117_state *state = fe->demodulator_priv;
>>> + state->dcur = state->dnxt;
>>> +}
>>> +
>>> +/* Wait for LNB */
>>> +static int cx24117_wait_for_lnb(struct dvb_frontend *fe)
>>> +{
>>> + struct cx24117_state *state = fe->demodulator_priv;
>>> + int i;
>>> + u8 val, reg = (state->demod == 0) ? CX24117_REG_QSTATUS0 :
>>> + CX24117_REG_QSTATUS1;
>>> +
>>> + dev_dbg(&state->priv->i2c->dev, "%s() demod%d qstatus = 0x%02x\n",
>>> + __func__, state->demod, cx24117_readreg(state, reg));
>>> +
>>> + /* Wait for up to 300 ms */
>>> + for (i = 0; i < 10; i++) {
>>> + val = cx24117_readreg(state, reg) & 0x01;
>>> + if (val != 0)
>>> + return 0;
>>> + msleep(30);
>>> + }
>>> +
>>> + dev_warn(&state->priv->i2c->dev, "%s: demod%d LNB not ready\n",
>>> + KBUILD_MODNAME, state->demod);
>>> +
>>> + return -ETIMEDOUT; /* -EBUSY ? */
>>> +}
>>> +
>>> +static int cx24117_set_voltage(struct dvb_frontend *fe,
>>> + fe_sec_voltage_t voltage)
>>> +{
>>> + struct cx24117_state *state = fe->demodulator_priv;
>>> + struct cx24117_cmd cmd;
>>> + int ret;
>>> + u8 reg = (state->demod == 0) ? 0x10 : 0x20;
>>> +
>>> + dev_dbg(&state->priv->i2c->dev, "%s() demod%d %s\n",
>>> + __func__, state->demod,
>>> + voltage == SEC_VOLTAGE_13 ? "SEC_VOLTAGE_13" :
>>> + voltage == SEC_VOLTAGE_18 ? "SEC_VOLTAGE_18" :
>>> + "SEC_VOLTAGE_OFF");
>>> +
>>> + /* CMD 32 */
>>> + cmd.args[0] = 0x32;
>>> + cmd.args[1] = reg;
>>> + cmd.args[2] = reg;
>>> + cmd.len = 3;
>>> + ret = cx24117_cmd_execute(fe, &cmd);
>>> + if (ret)
>>> + return ret;
>>> +
>>> + if ((voltage == SEC_VOLTAGE_13) ||
>>> + (voltage == SEC_VOLTAGE_18)) {
>>> + /* CMD 33 */
>>> + cmd.args[0] = 0x33;
>>> + cmd.args[1] = reg;
>>> + cmd.args[2] = reg;
>>> + cmd.len = 3;
>>> + ret = cx24117_cmd_execute(fe, &cmd);
>>> + if (ret != 0)
>>> + return ret;
>>> +
>>> + ret = cx24117_wait_for_lnb(fe);
>>> + if (ret != 0)
>>> + return ret;
>>> +
>>> + /* Wait for voltage/min repeat delay */
>>> + msleep(100);
>>> +
>>> + /* CMD 22 - CMD_LNBDCLEVEL */
>>> + cmd.args[0] = CMD_LNBDCLEVEL;
>>> + cmd.args[1] = state->demod ? 0 : 1;
>>> + cmd.args[2] = (voltage == SEC_VOLTAGE_18 ? 0x01 : 0x00);
>>> + cmd.len = 3;
>>> +
>>> + /* Min delay time before DiSEqC send */
>>> + msleep(20);
>>> + } else {
>>> + cmd.args[0] = 0x33;
>>> + cmd.args[1] = 0x00;
>>> + cmd.args[2] = reg;
>>> + cmd.len = 3;
>>> + }
>>> +
>>> + return cx24117_cmd_execute(fe, &cmd);
>>> +}
>>> +
>>> +static int cx24117_set_tone(struct dvb_frontend *fe,
>>> + fe_sec_tone_mode_t tone)
>>> +{
>>> + struct cx24117_state *state = fe->demodulator_priv;
>>> + struct cx24117_cmd cmd;
>>> + int ret;
>>> +
>>> + dev_dbg(&state->priv->i2c->dev, "%s(%d) demod%d\n",
>>> + __func__, state->demod, tone);
>>> + if ((tone != SEC_TONE_ON) && (tone != SEC_TONE_OFF)) {
>>> + dev_warn(&state->priv->i2c->dev, "%s: demod%d invalid
>>> tone=%d\n",
>>> + KBUILD_MODNAME, state->demod, tone);
>>> + return -EINVAL;
>>> + }
>>> +
>>> + /* Wait for LNB ready */
>>> + ret = cx24117_wait_for_lnb(fe);
>>> + if (ret != 0)
>>> + return ret;
>>> +
>>> + /* Min delay time after DiSEqC send */
>>> + msleep(20);
>>> +
>>> + /* Set the tone */
>>> + /* CMD 23 - CMD_SET_TONE */
>>> + cmd.args[0] = CMD_SET_TONE;
>>> + cmd.args[1] = (state->demod ? 0 : 1);
>>> + cmd.args[2] = 0x00;
>>> + cmd.args[3] = 0x00;
>>> + cmd.len = 5;
>>> + switch (tone) {
>>> + case SEC_TONE_ON:
>>> + cmd.args[4] = 0x01;
>>> + break;
>>> + case SEC_TONE_OFF:
>>> + cmd.args[4] = 0x00;
>>> + break;
>>> + }
>>> +
>>> + msleep(20);
>>> +
>>> + return cx24117_cmd_execute(fe, &cmd);
>>> +}
>>> +
>>> +/* Initialise DiSEqC */
>>> +static int cx24117_diseqc_init(struct dvb_frontend *fe)
>>> +{
>>> + struct cx24117_state *state = fe->demodulator_priv;
>>> +
>>> + /* Prepare a DiSEqC command */
>>> + state->dsec_cmd.args[0] = CMD_LNBSEND;
>>> +
>>> + /* demod */
>>> + state->dsec_cmd.args[CX24117_DISEQC_DEMOD] = state->demod ? 0 : 1;
>>> +
>>> + /* DiSEqC burst */
>>> + state->dsec_cmd.args[CX24117_DISEQC_BURST] =
>>> CX24117_DISEQC_MINI_A;
>>> +
>>> + /* Unknown */
>>> + state->dsec_cmd.args[CX24117_DISEQC_ARG3_2] = 0x02;
>>> + state->dsec_cmd.args[CX24117_DISEQC_ARG4_0] = 0x00;
>>> +
>>> + /* Continuation flag? */
>>> + state->dsec_cmd.args[CX24117_DISEQC_ARG5_0] = 0x00;
>>> +
>>> + /* DiSEqC message length */
>>> + state->dsec_cmd.args[CX24117_DISEQC_MSGLEN] = 0x00;
>>> +
>>> + /* Command length */
>>> + state->dsec_cmd.len = 7;
>>> +
>>> + return 0;
>>> +}
>>> +
>>> +/* Send DiSEqC message */
>>> +static int cx24117_send_diseqc_msg(struct dvb_frontend *fe,
>>> + struct dvb_diseqc_master_cmd *d)
>>> +{
>>> + struct cx24117_state *state = fe->demodulator_priv;
>>> + int i, ret;
>>> +
>>> + /* Dump DiSEqC message */
>>> + dev_dbg(&state->priv->i2c->dev, "%s: demod %d (",
>>> + __func__, state->demod);
>>> + for (i = 0; i < d->msg_len; i++)
>>> + dev_dbg(&state->priv->i2c->dev, "0x%02x ", d->msg[i]);
>>> + dev_dbg(&state->priv->i2c->dev, ")\n");
>>> +
>>> + /* Validate length */
>>> + if (d->msg_len > 15)
>>> + return -EINVAL;
>>> +
>>> + /* DiSEqC message */
>>> + for (i = 0; i < d->msg_len; i++)
>>> + state->dsec_cmd.args[CX24117_DISEQC_MSGOFS + i] =
>>> d->msg[i];
>>> +
>>> + /* DiSEqC message length */
>>> + state->dsec_cmd.args[CX24117_DISEQC_MSGLEN] = d->msg_len;
>>> +
>>> + /* Command length */
>>> + state->dsec_cmd.len = CX24117_DISEQC_MSGOFS +
>>> + state->dsec_cmd.args[CX24117_DISEQC_MSGLEN];
>>> +
>>> + /*
>>> + * Message is sent with derived else cached burst
>>> + *
>>> + * WRITE PORT GROUP COMMAND 38
>>> + *
>>> + * 0/A/A: E0 10 38 F0..F3
>>> + * 1/B/B: E0 10 38 F4..F7
>>> + * 2/C/A: E0 10 38 F8..FB
>>> + * 3/D/B: E0 10 38 FC..FF
>>> + *
>>> + * databyte[3]= 8421:8421
>>> + * ABCD:WXYZ
>>> + * CLR :SET
>>> + *
>>> + * WX= PORT SELECT 0..3 (X=TONEBURST)
>>> + * Y = VOLTAGE (0=13V, 1=18V)
>>> + * Z = BAND (0=LOW, 1=HIGH(22K))
>>> + */
>>> + if (d->msg_len >= 4 && d->msg[2] == 0x38)
>>> + state->dsec_cmd.args[CX24117_DISEQC_BURST] =
>>> + ((d->msg[3] & 4) >> 2);
>>> +
>>> + dev_dbg(&state->priv->i2c->dev, "%s() demod%d burst=%d\n",
>>> + __func__, state->demod,
>>> + state->dsec_cmd.args[CX24117_DISEQC_BURST]);
>>> +
>>> + /* Wait for LNB ready */
>>> + ret = cx24117_wait_for_lnb(fe);
>>> + if (ret != 0)
>>> + return ret;
>>> +
>>> + /* Wait for voltage/min repeat delay */
>>> + msleep(100);
>>> +
>>> + /* Command */
>>> + ret = cx24117_cmd_execute(fe, &state->dsec_cmd);
>>> + if (ret != 0)
>>> + return ret;
>>> + /*
>>> + * Wait for send
>>> + *
>>> + * Eutelsat spec:
>>> + * >15ms delay + (XXX determine if FW does this, see
>>> set_tone)
>>> + * 13.5ms per byte +
>>> + * >15ms delay +
>>> + * 12.5ms burst +
>>> + * >15ms delay (XXX determine if FW does this, see
>>> set_tone)
>>> + */
>>> + msleep((state->dsec_cmd.args[CX24117_DISEQC_MSGLEN] << 4) + 60);
>>> +
>>> + return 0;
>>> +}
>>> +
>>> +/* Send DiSEqC burst */
>>> +static int cx24117_diseqc_send_burst(struct dvb_frontend *fe,
>>> + fe_sec_mini_cmd_t burst)
>>> +{
>>> + struct cx24117_state *state = fe->demodulator_priv;
>>> +
>>> + dev_dbg(&state->priv->i2c->dev, "%s(%d) demod=%d\n",
>>> + __func__, burst, state->demod);
>>> +
>>> + /* DiSEqC burst */
>>> + if (burst == SEC_MINI_A)
>>> + state->dsec_cmd.args[CX24117_DISEQC_BURST] =
>>> + CX24117_DISEQC_MINI_A;
>>> + else if (burst == SEC_MINI_B)
>>> + state->dsec_cmd.args[CX24117_DISEQC_BURST] =
>>> + CX24117_DISEQC_MINI_B;
>>> + else
>>> + return -EINVAL;
>>> +
>>> + return 0;
>>> +}
>>> +
>>> +static void cx24117_release(struct dvb_frontend *fe)
>>> +{
>>> + struct cx24117_state *state = fe->demodulator_priv;
>>> + dev_dbg(&state->priv->i2c->dev, "%s demod%d\n",
>>> + __func__, state->demod);
>>> + if (!atomic_dec_and_test(&state->priv->fe_nr))
>>> + kfree(state->priv);
>>> + kfree(state);
>>> +}
>>> +
>>> +static struct dvb_frontend_ops cx24117_ops;
>>> +
>>> +struct dvb_frontend *cx24117_attach(const struct cx24117_config *config,
>>> + struct i2c_adapter *i2c, struct dvb_frontend *fe)
>>> +{
>>> + struct cx24117_state *state = NULL;
>>> + struct cx24117_priv *priv = NULL;
>>> + int demod = 0;
>>> +
>>> + /* first frontend attaching */
>>> + /* allocate shared priv struct */
>>> + if (fe == NULL) {
>>> + priv = kzalloc(sizeof(struct cx24117_priv), GFP_KERNEL);
>>> + if (priv == NULL)
>>> + goto error1;
>>> + priv->i2c = i2c;
>>> + priv->demod_address = config->demod_address;
>>> + mutex_init(&priv->fe_lock);
>>> + } else {
>>> + demod = 1;
>>> + priv = ((struct cx24117_state *)
>>> fe->demodulator_priv)->priv;
>>> + }
>>> +
>>> + /* allocate memory for the internal state */
>>> + state = kzalloc(sizeof(struct cx24117_state), GFP_KERNEL);
>>> + if (state == NULL)
>>> + goto error2;
>>> +
>>> + state->demod = demod;
>>> + state->priv = priv;
>>> +
>>> + /* test i2c bus for ack */
>>> + if (demod == 0) {
>>> + if (cx24117_readreg(state, 0x00) < 0)
>>> + goto error3;
>>> + }
>>> +
>>> + /* nr of frontends using the module */
>>> + atomic_inc(&priv->fe_nr);
>>> +
>>> + dev_info(&state->priv->i2c->dev,
>>> + "%s: Attaching frontend %d\n",
>>> + KBUILD_MODNAME, demod);
>>> +
>>> + /* create dvb_frontend */
>>> + memcpy(&state->frontend.ops, &cx24117_ops,
>>> + sizeof(struct dvb_frontend_ops));
>>> + state->frontend.demodulator_priv = state;
>>> + return &state->frontend;
>>> +
>>> +error3:
>>> + kfree(state);
>>> +error2:
>>> + kfree(priv);
>>> +error1:
>>> + return NULL;
>>> +}
>>> +EXPORT_SYMBOL_GPL(cx24117_attach);
>>> +
>>> +/*
>>> + * Initialise or wake up device
>>> + *
>>> + * Power config will reset and load initial firmware if required
>>> + */
>>> +static int cx24117_initfe(struct dvb_frontend *fe)
>>> +{
>>> + struct cx24117_state *state = fe->demodulator_priv;
>>> + struct cx24117_cmd cmd;
>>> + int ret;
>>> +
>>> + dev_dbg(&state->priv->i2c->dev, "%s() demod%d\n",
>>> + __func__, state->demod);
>>> +
>>> + mutex_lock(&state->priv->fe_lock);
>>> +
>>> + /* Firmware CMD 36: Power config */
>>> + cmd.args[0] = CMD_TUNERSLEEP;
>>> + cmd.args[1] = (state->demod ? 1 : 0);
>>> + cmd.args[2] = 0;
>>> + cmd.len = 3;
>>> + ret = cx24117_cmd_execute_nolock(fe, &cmd);
>>> + if (ret != 0)
>>> + return ret;
>>> +
>>> + ret = cx24117_diseqc_init(fe);
>>> + if (ret != 0)
>>> + return ret;
>>> +
>>> + /* CMD 3C */
>>> + cmd.args[0] = 0x3c;
>>> + cmd.args[1] = (state->demod ? 1 : 0);
>>> + cmd.args[2] = 0x10;
>>> + cmd.args[3] = 0x10;
>>> + cmd.len = 4;
>>> + ret = cx24117_cmd_execute_nolock(fe, &cmd);
>>> + if (ret != 0)
>>> + return ret;
>>> +
>>> + /* CMD 34 */
>>> + cmd.args[0] = 0x34;
>>> + cmd.args[1] = (state->demod ? 1 : 0);
>>> + cmd.args[2] = CX24117_OCC;
>>> + cmd.len = 3;
>>> + ret = cx24117_cmd_execute_nolock(fe, &cmd);
>>> + if (ret != 0)
>>> + return ret;
>>> +
>>> + mutex_unlock(&state->priv->fe_lock);
>>> +
>>> + return ret;
>>> +}
>>> +
>>> +/*
>>> + * Put device to sleep
>>> + */
>>> +static int cx24117_sleep(struct dvb_frontend *fe)
>>> +{
>>> + struct cx24117_state *state = fe->demodulator_priv;
>>> + struct cx24117_cmd cmd;
>>> +
>>> + dev_dbg(&state->priv->i2c->dev, "%s() demod%d\n",
>>> + __func__, state->demod);
>>> +
>>> + /* Firmware CMD 36: Power config */
>>> + cmd.args[0] = CMD_TUNERSLEEP;
>>> + cmd.args[1] = (state->demod ? 1 : 0);
>>> + cmd.args[2] = 1;
>>> + cmd.len = 3;
>>> + return cx24117_cmd_execute(fe, &cmd);
>>> +}
>>> +
>>> +/* dvb-core told us to tune, the tv property cache will be complete,
>>> + * it's safe for is to pull values and use them for tuning purposes.
>>> + */
>>> +static int cx24117_set_frontend(struct dvb_frontend *fe)
>>> +{
>>> + struct cx24117_state *state = fe->demodulator_priv;
>>> + struct dtv_frontend_properties *c = &fe->dtv_property_cache;
>>> + struct cx24117_cmd cmd;
>>> + fe_status_t tunerstat;
>>> + int i, status, ret, retune = 1;
>>> + u8 reg_clkdiv, reg_ratediv;
>>> +
>>> + dev_dbg(&state->priv->i2c->dev, "%s() demod%d\n",
>>> + __func__, state->demod);
>>> +
>>> + switch (c->delivery_system) {
>>> + case SYS_DVBS:
>>> + dev_dbg(&state->priv->i2c->dev, "%s() demod%d DVB-S\n",
>>> + __func__, state->demod);
>>> +
>>> + /* Only QPSK is supported for DVB-S */
>>> + if (c->modulation != QPSK) {
>>> + dev_dbg(&state->priv->i2c->dev,
>>> + "%s() demod%d unsupported modulation
>>> (%d)\n",
>>> + __func__, state->demod, c->modulation);
>>> + return -EINVAL;
>>> + }
>>> +
>>> + /* Pilot doesn't exist in DVB-S, turn bit off */
>>> + state->dnxt.pilot_val = CX24117_PILOT_OFF;
>>> +
>>> + /* DVB-S only supports 0.35 */
>>> + state->dnxt.rolloff_val = CX24117_ROLLOFF_035;
>>> + break;
>>> +
>>> + case SYS_DVBS2:
>>> + dev_dbg(&state->priv->i2c->dev, "%s() demod%d DVB-S2\n",
>>> + __func__, state->demod);
>>> +
>>> + /*
>>> + * NBC 8PSK/QPSK with DVB-S is supported for DVB-S2,
>>> + * but not hardware auto detection
>>> + */
>>> + if (c->modulation != PSK_8 && c->modulation != QPSK) {
>>> + dev_dbg(&state->priv->i2c->dev,
>>> + "%s() demod%d unsupported modulation
>>> (%d)\n",
>>> + __func__, state->demod, c->modulation);
>>> + return -EOPNOTSUPP;
>>> + }
>>> +
>>> + switch (c->pilot) {
>>> + case PILOT_AUTO:
>>> + state->dnxt.pilot_val = CX24117_PILOT_AUTO;
>>> + break;
>>> + case PILOT_OFF:
>>> + state->dnxt.pilot_val = CX24117_PILOT_OFF;
>>> + break;
>>> + case PILOT_ON:
>>> + state->dnxt.pilot_val = CX24117_PILOT_ON;
>>> + break;
>>> + default:
>>> + dev_dbg(&state->priv->i2c->dev,
>>> + "%s() demod%d unsupported pilot mode
>>> (%d)\n",
>>> + __func__, state->demod, c->pilot);
>>> + return -EOPNOTSUPP;
>>> + }
>>> +
>>> + switch (c->rolloff) {
>>> + case ROLLOFF_20:
>>> + state->dnxt.rolloff_val = CX24117_ROLLOFF_020;
>>> + break;
>>> + case ROLLOFF_25:
>>> + state->dnxt.rolloff_val = CX24117_ROLLOFF_025;
>>> + break;
>>> + case ROLLOFF_35:
>>> + state->dnxt.rolloff_val = CX24117_ROLLOFF_035;
>>> + break;
>>> + case ROLLOFF_AUTO:
>>> + state->dnxt.rolloff_val = CX24117_ROLLOFF_035;
>>> + /* soft-auto rolloff */
>>> + retune = 3;
>>> + break;
>>> + default:
>>> + dev_warn(&state->priv->i2c->dev,
>>> + "%s: demod%d unsupported rolloff (%d)\n",
>>> + KBUILD_MODNAME, state->demod, c->rolloff);
>>> + return -EOPNOTSUPP;
>>> + }
>>> + break;
>>> +
>>> + default:
>>> + dev_warn(&state->priv->i2c->dev,
>>> + "%s: demod %d unsupported delivery system (%d)\n",
>>> + KBUILD_MODNAME, state->demod, c->delivery_system);
>>> + return -EINVAL;
>>> + }
>>> +
>>> + state->dnxt.delsys = c->delivery_system;
>>> + state->dnxt.modulation = c->modulation;
>>> + state->dnxt.frequency = c->frequency;
>>> + state->dnxt.pilot = c->pilot;
>>> + state->dnxt.rolloff = c->rolloff;
>>> +
>>> + ret = cx24117_set_inversion(state, c->inversion);
>>> + if (ret != 0)
>>> + return ret;
>>> +
>>> + ret = cx24117_set_fec(state,
>>> + c->delivery_system, c->modulation, c->fec_inner);
>>> + if (ret != 0)
>>> + return ret;
>>> +
>>> + ret = cx24117_set_symbolrate(state, c->symbol_rate);
>>> + if (ret != 0)
>>> + return ret;
>>> +
>>> + /* discard the 'current' tuning parameters and prepare to tune */
>>> + cx24117_clone_params(fe);
>>> +
>>> + dev_dbg(&state->priv->i2c->dev,
>>> + "%s: delsys = %d\n", __func__, state->dcur.delsys);
>>> + dev_dbg(&state->priv->i2c->dev,
>>> + "%s: modulation = %d\n", __func__,
>>> state->dcur.modulation);
>>> + dev_dbg(&state->priv->i2c->dev,
>>> + "%s: frequency = %d\n", __func__,
>>> state->dcur.frequency);
>>> + dev_dbg(&state->priv->i2c->dev,
>>> + "%s: pilot = %d (val = 0x%02x)\n", __func__,
>>> + state->dcur.pilot, state->dcur.pilot_val);
>>> + dev_dbg(&state->priv->i2c->dev,
>>> + "%s: retune = %d\n", __func__, retune);
>>> + dev_dbg(&state->priv->i2c->dev,
>>> + "%s: rolloff = %d (val = 0x%02x)\n", __func__,
>>> + state->dcur.rolloff, state->dcur.rolloff_val);
>>> + dev_dbg(&state->priv->i2c->dev,
>>> + "%s: symbol_rate = %d\n", __func__,
>>> state->dcur.symbol_rate);
>>> + dev_dbg(&state->priv->i2c->dev,
>>> + "%s: FEC = %d (mask/val = 0x%02x/0x%02x)\n",
>>> __func__,
>>> + state->dcur.fec, state->dcur.fec_mask,
>>> state->dcur.fec_val);
>>> + dev_dbg(&state->priv->i2c->dev,
>>> + "%s: Inversion = %d (val = 0x%02x)\n", __func__,
>>> + state->dcur.inversion, state->dcur.inversion_val);
>>> +
>>> + /* Prepare a tune request */
>>> + cmd.args[0] = CMD_TUNEREQUEST;
>>> +
>>> + /* demod */
>>> + cmd.args[1] = state->demod;
>>> +
>>> + /* Frequency */
>>> + cmd.args[2] = (state->dcur.frequency & 0xff0000) >> 16;
>>> + cmd.args[3] = (state->dcur.frequency & 0x00ff00) >> 8;
>>> + cmd.args[4] = (state->dcur.frequency & 0x0000ff);
>>> +
>>> + /* Symbol Rate */
>>> + cmd.args[5] = ((state->dcur.symbol_rate / 1000) & 0xff00) >> 8;
>>> + cmd.args[6] = ((state->dcur.symbol_rate / 1000) & 0x00ff);
>>> +
>>> + /* Automatic Inversion */
>>> + cmd.args[7] = state->dcur.inversion_val;
>>> +
>>> + /* Modulation / FEC / Pilot */
>>> + cmd.args[8] = state->dcur.fec_val | state->dcur.pilot_val;
>>> +
>>> + cmd.args[9] = CX24117_SEARCH_RANGE_KHZ >> 8;
>>> + cmd.args[10] = CX24117_SEARCH_RANGE_KHZ & 0xff;
>>> +
>>> + cmd.args[11] = state->dcur.rolloff_val;
>>> + cmd.args[12] = state->dcur.fec_mask;
>>> +
>>> + if (state->dcur.symbol_rate > 30000000) {
>>> + reg_ratediv = 0x04;
>>> + reg_clkdiv = 0x02;
>>> + } else if (state->dcur.symbol_rate > 10000000) {
>>> + reg_ratediv = 0x06;
>>> + reg_clkdiv = 0x03;
>>> + } else {
>>> + reg_ratediv = 0x0a;
>>> + reg_clkdiv = 0x05;
>>> + }
>>> +
>>> + cmd.args[13] = reg_ratediv;
>>> + cmd.args[14] = reg_clkdiv;
>>> +
>>> + cx24117_writereg(state, (state->demod == 0) ?
>>> + CX24117_REG_CLKDIV0 : CX24117_REG_CLKDIV1, reg_clkdiv);
>>> + cx24117_writereg(state, (state->demod == 0) ?
>>> + CX24117_REG_RATEDIV0 : CX24117_REG_RATEDIV1, reg_ratediv);
>>> +
>>> + cmd.args[15] = CX24117_PNE;
>>> + cmd.len = 16;
>>> +
>>> + do {
>>> + /* Reset status register */
>>> + status = cx24117_readreg(state, (state->demod == 0) ?
>>> + CX24117_REG_SSTATUS0 : CX24117_REG_SSTATUS1) &
>>> + CX24117_SIGNAL_MASK;
>>> +
>>> + dev_dbg(&state->priv->i2c->dev,
>>> + "%s() demod%d status_setfe = %02x\n",
>>> + __func__, state->demod, status);
>>> +
>>> + cx24117_writereg(state, (state->demod == 0) ?
>>> + CX24117_REG_SSTATUS0 : CX24117_REG_SSTATUS1,
>>> status);
>>> +
>>> + /* Tune */
>>> + ret = cx24117_cmd_execute(fe, &cmd);
>>> + if (ret != 0)
>>> + break;
>>> +
>>> + /*
>>> + * Wait for up to 500 ms before retrying
>>> + *
>>> + * If we are able to tune then generally it occurs within
>>> 100ms.
>>> + * If it takes longer, try a different rolloff setting.
>>> + */
>>> + for (i = 0; i < 50; i++) {
>>> + cx24117_read_status(fe, &tunerstat);
>>> + status = tunerstat & (FE_HAS_SIGNAL |
>>> FE_HAS_SYNC);
>>> + if (status == (FE_HAS_SIGNAL | FE_HAS_SYNC)) {
>>> + dev_dbg(&state->priv->i2c->dev,
>>> + "%s() demod%d tuned\n",
>>> + __func__, state->demod);
>>> + return 0;
>>> + }
>>> + msleep(20);
>>> + }
>>> +
>>> + dev_dbg(&state->priv->i2c->dev, "%s() demod%d not
>>> tuned\n",
>>> + __func__, state->demod);
>>> +
>>> + /* try next rolloff value */
>>> + if (state->dcur.rolloff == 3)
>>> + cmd.args[11]--;
>>> +
>>> + } while (--retune);
>>> + return -EINVAL;
>>> +}
>>> +
>>> +static int cx24117_tune(struct dvb_frontend *fe, bool re_tune,
>>> + unsigned int mode_flags, unsigned int *delay, fe_status_t *status)
>>> +{
>>> + struct cx24117_state *state = fe->demodulator_priv;
>>> +
>>> + dev_dbg(&state->priv->i2c->dev, "%s() demod%d\n",
>>> + __func__, state->demod);
>>> +
>>> + *delay = HZ / 5;
>>> + if (re_tune) {
>>> + int ret = cx24117_set_frontend(fe);
>>> + if (ret)
>>> + return ret;
>>> + }
>>> + return cx24117_read_status(fe, status);
>>> +}
>>> +
>>> +static int cx24117_get_algo(struct dvb_frontend *fe)
>>> +{
>>> + return DVBFE_ALGO_HW;
>>> +}
>>> +
>>> +static int cx24117_get_frontend(struct dvb_frontend *fe)
>>> +{
>>> + struct cx24117_state *state = fe->demodulator_priv;
>>> + struct dtv_frontend_properties *c = &fe->dtv_property_cache;
>>> + struct cx24117_cmd cmd;
>>> + u8 reg, st, inv;
>>> + int ret, idx;
>>> + unsigned int freq;
>>> + short srate_os, freq_os;
>>> +
>>> + u8 buf[0x1f-4];
>>> +
>>> + cmd.args[0] = 0x1c;
>>> + cmd.args[1] = (u8) state->demod;
>>> + cmd.len = 2;
>>> + ret = cx24117_cmd_execute(fe, &cmd);
>>> + if (ret != 0)
>>> + return ret;
>>> +
>>> + /* read all required regs at once */
>>> + reg = (state->demod == 0) ? CX24117_REG_FREQ3_0 :
>>> CX24117_REG_FREQ3_1;
>>> + ret = cx24117_readregN(state, reg, buf, 0x1f-4);
>>> + if (ret != 0)
>>> + return ret;
>>> +
>>> + st = buf[5];
>>> +
>>> + /* get spectral inversion */
>>> + inv = (((state->demod == 0) ? ~st : st) >> 6) & 1;
>>> + if (inv == 0)
>>> + c->inversion = INVERSION_OFF;
>>> + else
>>> + c->inversion = INVERSION_ON;
>>> +
>>> + /* modulation and fec */
>>> + idx = st & 0x3f;
>>> + if (c->delivery_system == SYS_DVBS2) {
>>> + if (idx > 11)
>>> + idx += 9;
>>> + else
>>> + idx += 7;
>>> + }
>>> +
>>> + c->modulation = cx24117_modfec_modes[idx].modulation;
>>> + c->fec_inner = cx24117_modfec_modes[idx].fec;
>>> +
>>> + /* frequency */
>>> + freq = (buf[0] << 16) | (buf[1] << 8) | buf[2];
>>> + freq_os = (buf[8] << 8) | buf[9];
>>> + c->frequency = freq + freq_os;
>>> +
>>> + /* symbol rate */
>>> + srate_os = (buf[10] << 8) | buf[11];
>>> + c->symbol_rate = -1000 * srate_os + state->dcur.symbol_rate;
>>> + return 0;
>>> +}
>>> +
>>> +static struct dvb_frontend_ops cx24117_ops = {
>>> + .delsys = { SYS_DVBS, SYS_DVBS2 },
>>> + .info = {
>>> + .name = "Conexant CX24117/CX24132",
>>> + .frequency_min = 950000,
>>> + .frequency_max = 2150000,
>>> + .frequency_stepsize = 1011, /* kHz for QPSK frontends */
>>> + .frequency_tolerance = 5000,
>>> + .symbol_rate_min = 1000000,
>>> + .symbol_rate_max = 45000000,
>>> + .caps = FE_CAN_INVERSION_AUTO |
>>> + FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
>>> + FE_CAN_FEC_4_5 | FE_CAN_FEC_5_6 | FE_CAN_FEC_6_7 |
>>> + FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
>>> + FE_CAN_2G_MODULATION |
>>> + FE_CAN_QPSK | FE_CAN_RECOVER
>>> + },
>>> +
>>> + .release = cx24117_release,
>>> +
>>> + .init = cx24117_initfe,
>>> + .sleep = cx24117_sleep,
>>> + .read_status = cx24117_read_status,
>>> + .read_ber = cx24117_read_ber,
>>> + .read_signal_strength = cx24117_read_signal_strength,
>>> + .read_snr = cx24117_read_snr,
>>> + .read_ucblocks = cx24117_read_ucblocks,
>>> + .set_tone = cx24117_set_tone,
>>> + .set_voltage = cx24117_set_voltage,
>>> + .diseqc_send_master_cmd = cx24117_send_diseqc_msg,
>>> + .diseqc_send_burst = cx24117_diseqc_send_burst,
>>> + .get_frontend_algo = cx24117_get_algo,
>>> + .tune = cx24117_tune,
>>> +
>>> + .set_frontend = cx24117_set_frontend,
>>> + .get_frontend = cx24117_get_frontend,
>>> +};
>>> +
>>> +
>>> +MODULE_DESCRIPTION("DVB Frontend module for Conexant cx24117/cx24132
>>> hardware");
>>> +MODULE_AUTHOR("Luis Alves (ljalvs@xxxxxxxxx)");
>>> +MODULE_LICENSE("GPL");
>>> +MODULE_VERSION("1.1");
>>> +MODULE_FIRMWARE(CX24117_DEFAULT_FIRMWARE);
>>> +
>>> diff --git a/drivers/media/dvb-frontends/cx24117.h
>>> b/drivers/media/dvb-frontends/cx24117.h
>>> new file mode 100644
>>> index 0000000..5bc8f11
>>> --- /dev/null
>>> +++ b/drivers/media/dvb-frontends/cx24117.h
>>> @@ -0,0 +1,47 @@
>>> +/*
>>> + Conexant cx24117/cx24132 - Dual DVBS/S2 Satellite demod/tuner driver
>>> +
>>> + Copyright (C) 2013 Luis Alves <ljalvs@xxxxxxxxx>
>>> + (based on cx24116.h by Steven Toth)
>>> +
>>> + 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.
>>> +*/
>>> +
>>> +#ifndef CX24117_H
>>> +#define CX24117_H
>>> +
>>> +#include <linux/kconfig.h>
>>> +#include <linux/dvb/frontend.h>
>>> +
>>> +struct cx24117_config {
>>> + /* the demodulator's i2c address */
>>> + u8 demod_address;
>>> +};
>>> +
>>> +#if IS_ENABLED(CONFIG_DVB_CX24117)
>>> +extern struct dvb_frontend *cx24117_attach(
>>> + const struct cx24117_config *config,
>>> + struct i2c_adapter *i2c, struct dvb_frontend *fe);
>>> +#else
>>> +static inline struct dvb_frontend *cx24117_attach(
>>> + const struct cx24117_config *config,
>>> + struct i2c_adapter *i2c, struct dvb_frontend *fe)
>>> +{
>>> + dev_warn(&i2c->dev, "%s: driver disabled by Kconfig\n", __func__);
>>> + return NULL;
>>> +}
>>> +#endif
>>> +
>>> +#endif /* CX24117_H */
>>>
>>
>>
>> --
>> http://palosaari.fi/
>>
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>
>
> (Apologies if you may have received this twice - I'm not sure if the
> first one went through)
>
> Luis,
>
> I have your patches queued in the 'cx24117' branch of my dvb.git tree:
>
> git://linuxtv.org/mkrufky/dvb cx24117
>
> It feels a bit strange to me that we are passing a struct dvb_frontend
> * into cx24117_attach() ... Looking at the code, my understanding is
> that multiple cx24117's share some data between their driver
> instances? Could you explain a bit more about the need for doing
> this?
>
> If you should decide to send in additional patches, please feel free
> to send changes in against this cx24117 branch until we merge it into
> master.
>
> Cheers,
>
> Mike Krufky
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