[media] dvb: add cx24117 frontend
authorLuis Alves <ljalvs@gmail.com>
Wed, 2 Oct 2013 01:11:19 +0000 (22:11 -0300)
committerMauro Carvalho Chehab <m.chehab@samsung.com>
Thu, 3 Oct 2013 10:38:26 +0000 (07:38 -0300)
Add support for the cx24117 dual DVB-S/S2 frontend.

Signed-off-by: Luis Alves <ljalvs@gmail.com>
Reviewed-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
drivers/media/dvb-frontends/Kconfig
drivers/media/dvb-frontends/Makefile
drivers/media/dvb-frontends/cx24117.c [new file with mode: 0644]
drivers/media/dvb-frontends/cx24117.h [new file with mode: 0644]

index 0e2ec6f73b0525583e734dcac3933da97dee8fe6..bddbab43a2df01a3f243bb5300708c09e7cf4c21 100644 (file)
@@ -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
index cebc0faffab590e3404e906eb09839f3eeb5f21a..f9cb43d9aed920816413d95656a83d3dad30a096 100644 (file)
@@ -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 (file)
index 0000000..3b63913
--- /dev/null
@@ -0,0 +1,1621 @@
+/*
+    Conexant cx24117/cx24132 - Dual DVBS/S2 Satellite demod/tuner driver
+
+    Copyright (C) 2013 Luis Alves <ljalvs@gmail.com>
+       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 = &reg, .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 = &reg, .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@gmail.com)");
+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 (file)
index 0000000..5bc8f11
--- /dev/null
@@ -0,0 +1,47 @@
+/*
+    Conexant cx24117/cx24132 - Dual DVBS/S2 Satellite demod/tuner driver
+
+    Copyright (C) 2013 Luis Alves <ljalvs@gmail.com>
+       (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 */