media: dvb-frontends: add demod si2168 for WinTV-DualHD
Henning Garbers [Sat, 2 Jul 2016 20:39:46 +0000 (22:39 +0200)]
Bug: 30095176
Bug 1736911

Change-Id: Ia02bc1cf54a737d0183bf3647dd6c70d64bc4291
Signed-off-by: Sungtak Lee <taklee@google.com>
Signed-off-by: Jean Huang <jeanh@nvidia.com>
Signed-off-by: Patrick Horng <phorng@nvidia.com>
Reviewed-on: http://git-master/r/1284468
(cherry picked from commit 39a023a8468ac60caca57895b3d236b8795f211b)
Reviewed-on: http://git-master/r/1311295
GVS: Gerrit_Virtual_Submit
Reviewed-by: Vinayak Pane <vpane@nvidia.com>
Reviewed-on: http://git-master/r/1456509
Reviewed-by: Manish Tuteja <mtuteja@nvidia.com>

drivers/media/dvb-frontends/Kconfig
drivers/media/dvb-frontends/Makefile
drivers/media/dvb-frontends/si2168.c [new file with mode: 0644]
drivers/media/dvb-frontends/si2168.h [new file with mode: 0644]
drivers/media/dvb-frontends/si2168_priv.h [new file with mode: 0644]

index dea17b0..f268934 100644 (file)
@@ -432,6 +432,13 @@ config DVB_RTL2832
        help
          Say Y when you want to support this frontend.
 
+config DVB_SI2168
+       tristate "Silicon Labs Si2168"
+       depends on DVB_CORE && I2C && I2C_MUX
+       default m if !MEDIA_SUBDRV_AUTOSELECT
+       help
+         Say Y when you want to support this frontend.
+
 comment "DVB-C (cable) frontends"
        depends on DVB_CORE
 
index 3b79d38..92bb882 100644 (file)
@@ -104,4 +104,5 @@ obj-$(CONFIG_DVB_RTL2830) += rtl2830.o
 obj-$(CONFIG_DVB_RTL2832) += rtl2832.o
 obj-$(CONFIG_DVB_M88RS2000) += m88rs2000.o
 obj-$(CONFIG_DVB_AF9033) += af9033.o
+obj-$(CONFIG_DVB_SI2168) += si2168.o
 
diff --git a/drivers/media/dvb-frontends/si2168.c b/drivers/media/dvb-frontends/si2168.c
new file mode 100644 (file)
index 0000000..d40090b
--- /dev/null
@@ -0,0 +1,777 @@
+/*
+ * Silicon Labs Si2168 DVB-T/T2/C demodulator driver
+ *
+ * Copyright (C) 2014 Antti Palosaari <crope@iki.fi>
+ *
+ *    This program is free software; you can redistribute it and/or modify
+ *    it under the terms of the GNU General Public License as published by
+ *    the Free Software Foundation; either version 2 of the License, or
+ *    (at your option) any later version.
+ *
+ *    This program is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *    GNU General Public License for more details.
+ */
+
+#include "si2168_priv.h"
+
+static const struct dvb_frontend_ops si2168_ops;
+
+/* Own I2C adapter locking is needed because of I2C gate logic. */
+static int si2168_i2c_master_send_unlocked(const struct i2c_client *client,
+                                          const char *buf, int count)
+{
+       int ret;
+       struct i2c_msg msg = {
+               .addr = client->addr,
+               .flags = 0,
+               .len = count,
+               .buf = (char *)buf,
+       };
+
+       ret = __i2c_transfer(client->adapter, &msg, 1);
+       return (ret == 1) ? count : ret;
+}
+
+static int si2168_i2c_master_recv_unlocked(const struct i2c_client *client,
+                                          char *buf, int count)
+{
+       int ret;
+       struct i2c_msg msg = {
+               .addr = client->addr,
+               .flags = I2C_M_RD,
+               .len = count,
+               .buf = buf,
+       };
+
+       ret = __i2c_transfer(client->adapter, &msg, 1);
+       return (ret == 1) ? count : ret;
+}
+
+/* execute firmware command */
+static int si2168_cmd_execute_unlocked(struct i2c_client *client,
+                                      struct si2168_cmd *cmd)
+{
+       int ret;
+       unsigned long timeout;
+
+       if (cmd->wlen) {
+               /* write cmd and args for firmware */
+               ret = si2168_i2c_master_send_unlocked(client, cmd->args,
+                                                     cmd->wlen);
+               if (ret < 0) {
+                       goto err;
+               } else if (ret != cmd->wlen) {
+                       ret = -EREMOTEIO;
+                       goto err;
+               }
+       }
+
+       if (cmd->rlen) {
+               /* wait cmd execution terminate */
+               timeout = jiffies + msecs_to_jiffies(70);
+               while (!time_after(jiffies, timeout)) {
+                       ret = si2168_i2c_master_recv_unlocked(client, cmd->args,
+                                                             cmd->rlen);
+                       if (ret < 0) {
+                               goto err;
+                       } else if (ret != cmd->rlen) {
+                               ret = -EREMOTEIO;
+                               goto err;
+                       }
+
+                       /* firmware ready? */
+                       if ((cmd->args[0] >> 7) & 0x01)
+                               break;
+               }
+
+               dev_dbg(&client->dev, "cmd execution took %d ms\n",
+                               jiffies_to_msecs(jiffies) -
+                               (jiffies_to_msecs(timeout) - 70));
+
+               /* error bit set? */
+               if ((cmd->args[0] >> 6) & 0x01) {
+                       ret = -EREMOTEIO;
+                       goto err;
+               }
+
+               if (!((cmd->args[0] >> 7) & 0x01)) {
+                       ret = -ETIMEDOUT;
+                       goto err;
+               }
+       }
+
+       return 0;
+err:
+       dev_dbg(&client->dev, "failed=%d\n", ret);
+       return ret;
+}
+
+static int si2168_cmd_execute(struct i2c_client *client, struct si2168_cmd *cmd)
+{
+       int ret;
+
+       i2c_lock_adapter(client->adapter);
+       ret = si2168_cmd_execute_unlocked(client, cmd);
+       i2c_unlock_adapter(client->adapter);
+
+       return ret;
+}
+
+static int si2168_read_status(struct dvb_frontend *fe, enum fe_status *status)
+{
+       struct i2c_client *client = fe->demodulator_priv;
+       struct si2168_dev *dev = i2c_get_clientdata(client);
+       struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+       int ret;
+       struct si2168_cmd cmd;
+
+       *status = 0;
+
+       if (!dev->active) {
+               ret = -EAGAIN;
+               goto err;
+       }
+
+       switch (c->delivery_system) {
+       case SYS_DVBT:
+               memcpy(cmd.args, "\xa0\x01", 2);
+               cmd.wlen = 2;
+               cmd.rlen = 13;
+               break;
+       case SYS_DVBC_ANNEX_A:
+               memcpy(cmd.args, "\x90\x01", 2);
+               cmd.wlen = 2;
+               cmd.rlen = 9;
+               break;
+       case SYS_DVBT2:
+               memcpy(cmd.args, "\x50\x01", 2);
+               cmd.wlen = 2;
+               cmd.rlen = 14;
+               break;
+       default:
+               ret = -EINVAL;
+               goto err;
+       }
+
+       ret = si2168_cmd_execute(client, &cmd);
+       if (ret)
+               goto err;
+
+       switch ((cmd.args[2] >> 1) & 0x03) {
+       case 0x01:
+               *status = FE_HAS_SIGNAL | FE_HAS_CARRIER;
+               break;
+       case 0x03:
+               *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI |
+                               FE_HAS_SYNC | FE_HAS_LOCK;
+               break;
+       }
+
+       dev->fe_status = *status;
+
+       if (*status & FE_HAS_LOCK) {
+               c->cnr.len = 1;
+               c->cnr.stat[0].scale = FE_SCALE_DECIBEL;
+               c->cnr.stat[0].svalue = cmd.args[3] * 1000 / 4;
+       } else {
+               c->cnr.len = 1;
+               c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+       }
+
+       dev_dbg(&client->dev, "status=%02x args=%*ph\n",
+                       *status, cmd.rlen, cmd.args);
+
+       return 0;
+err:
+       dev_dbg(&client->dev, "failed=%d\n", ret);
+       return ret;
+}
+
+static int si2168_set_frontend(struct dvb_frontend *fe)
+{
+       struct i2c_client *client = fe->demodulator_priv;
+       struct si2168_dev *dev = i2c_get_clientdata(client);
+       struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+       int ret;
+       struct si2168_cmd cmd;
+       u8 bandwidth, delivery_system;
+
+       dev_dbg(&client->dev,
+                       "delivery_system=%u modulation=%u frequency=%u "
+                       "bandwidth_hz=%u symbol_rate=%u inversion=%u "
+                       "stream_id=%u\n",
+                       c->delivery_system, c->modulation, c->frequency,
+                       c->bandwidth_hz, c->symbol_rate, c->inversion,
+                       c->stream_id);
+
+       if (!dev->active) {
+               ret = -EAGAIN;
+               goto err;
+       }
+
+       switch (c->delivery_system) {
+       case SYS_DVBT:
+               delivery_system = 0x20;
+               break;
+       case SYS_DVBC_ANNEX_A:
+               delivery_system = 0x30;
+               break;
+       case SYS_DVBT2:
+               delivery_system = 0x70;
+               break;
+       default:
+               ret = -EINVAL;
+               goto err;
+       }
+
+       if (c->bandwidth_hz == 0) {
+               ret = -EINVAL;
+               goto err;
+       } else if (c->bandwidth_hz <= 2000000)
+               bandwidth = 0x02;
+       else if (c->bandwidth_hz <= 5000000)
+               bandwidth = 0x05;
+       else if (c->bandwidth_hz <= 6000000)
+               bandwidth = 0x06;
+       else if (c->bandwidth_hz <= 7000000)
+               bandwidth = 0x07;
+       else if (c->bandwidth_hz <= 8000000)
+               bandwidth = 0x08;
+       else if (c->bandwidth_hz <= 9000000)
+               bandwidth = 0x09;
+       else if (c->bandwidth_hz <= 10000000)
+               bandwidth = 0x0a;
+       else
+               bandwidth = 0x0f;
+
+       /* program tuner */
+       if (fe->ops.tuner_ops.set_params) {
+               ret = fe->ops.tuner_ops.set_params(fe);
+               if (ret)
+                       goto err;
+       }
+
+       memcpy(cmd.args, "\x88\x02\x02\x02\x02", 5);
+       cmd.wlen = 5;
+       cmd.rlen = 5;
+       ret = si2168_cmd_execute(client, &cmd);
+       if (ret)
+               goto err;
+
+       /* that has no big effect */
+       if (c->delivery_system == SYS_DVBT)
+               memcpy(cmd.args, "\x89\x21\x06\x11\xff\x98", 6);
+       else if (c->delivery_system == SYS_DVBC_ANNEX_A)
+               memcpy(cmd.args, "\x89\x21\x06\x11\x89\xf0", 6);
+       else if (c->delivery_system == SYS_DVBT2)
+               memcpy(cmd.args, "\x89\x21\x06\x11\x89\x20", 6);
+       cmd.wlen = 6;
+       cmd.rlen = 3;
+       ret = si2168_cmd_execute(client, &cmd);
+       if (ret)
+               goto err;
+
+       if (c->delivery_system == SYS_DVBT2) {
+               /* select PLP */
+               cmd.args[0] = 0x52;
+               cmd.args[1] = c->stream_id & 0xff;
+               cmd.args[2] = c->stream_id == NO_STREAM_ID_FILTER ? 0 : 1;
+               cmd.wlen = 3;
+               cmd.rlen = 1;
+               ret = si2168_cmd_execute(client, &cmd);
+               if (ret)
+                       goto err;
+       }
+
+       memcpy(cmd.args, "\x51\x03", 2);
+       cmd.wlen = 2;
+       cmd.rlen = 12;
+       ret = si2168_cmd_execute(client, &cmd);
+       if (ret)
+               goto err;
+
+       memcpy(cmd.args, "\x12\x08\x04", 3);
+       cmd.wlen = 3;
+       cmd.rlen = 3;
+       ret = si2168_cmd_execute(client, &cmd);
+       if (ret)
+               goto err;
+
+       memcpy(cmd.args, "\x14\x00\x0c\x10\x12\x00", 6);
+       cmd.wlen = 6;
+       cmd.rlen = 4;
+       ret = si2168_cmd_execute(client, &cmd);
+       if (ret)
+               goto err;
+
+       memcpy(cmd.args, "\x14\x00\x06\x10\x24\x00", 6);
+       cmd.wlen = 6;
+       cmd.rlen = 4;
+       ret = si2168_cmd_execute(client, &cmd);
+       if (ret)
+               goto err;
+
+       memcpy(cmd.args, "\x14\x00\x07\x10\x00\x24", 6);
+       cmd.wlen = 6;
+       cmd.rlen = 4;
+       ret = si2168_cmd_execute(client, &cmd);
+       if (ret)
+               goto err;
+
+       memcpy(cmd.args, "\x14\x00\x0a\x10\x00\x00", 6);
+       cmd.args[4] = delivery_system | bandwidth;
+       cmd.wlen = 6;
+       cmd.rlen = 4;
+       ret = si2168_cmd_execute(client, &cmd);
+       if (ret)
+               goto err;
+
+       /* set DVB-C symbol rate */
+       if (c->delivery_system == SYS_DVBC_ANNEX_A) {
+               memcpy(cmd.args, "\x14\x00\x02\x11", 4);
+               cmd.args[4] = ((c->symbol_rate / 1000) >> 0) & 0xff;
+               cmd.args[5] = ((c->symbol_rate / 1000) >> 8) & 0xff;
+               cmd.wlen = 6;
+               cmd.rlen = 4;
+               ret = si2168_cmd_execute(client, &cmd);
+               if (ret)
+                       goto err;
+       }
+
+       memcpy(cmd.args, "\x14\x00\x0f\x10\x10\x00", 6);
+       cmd.wlen = 6;
+       cmd.rlen = 4;
+       ret = si2168_cmd_execute(client, &cmd);
+       if (ret)
+               goto err;
+
+       memcpy(cmd.args, "\x14\x00\x09\x10\xe3\x08", 6);
+       cmd.args[5] |= dev->ts_clock_inv ? 0x00 : 0x10;
+       cmd.wlen = 6;
+       cmd.rlen = 4;
+       ret = si2168_cmd_execute(client, &cmd);
+       if (ret)
+               goto err;
+
+       memcpy(cmd.args, "\x14\x00\x08\x10\xd7\x05", 6);
+       cmd.args[5] |= dev->ts_clock_inv ? 0x00 : 0x10;
+       cmd.wlen = 6;
+       cmd.rlen = 4;
+       ret = si2168_cmd_execute(client, &cmd);
+       if (ret)
+               goto err;
+
+       memcpy(cmd.args, "\x14\x00\x01\x12\x00\x00", 6);
+       cmd.wlen = 6;
+       cmd.rlen = 4;
+       ret = si2168_cmd_execute(client, &cmd);
+       if (ret)
+               goto err;
+
+       memcpy(cmd.args, "\x14\x00\x01\x03\x0c\x00", 6);
+       cmd.wlen = 6;
+       cmd.rlen = 4;
+       ret = si2168_cmd_execute(client, &cmd);
+       if (ret)
+               goto err;
+
+       memcpy(cmd.args, "\x85", 1);
+       cmd.wlen = 1;
+       cmd.rlen = 1;
+       ret = si2168_cmd_execute(client, &cmd);
+       if (ret)
+               goto err;
+
+       dev->delivery_system = c->delivery_system;
+
+       return 0;
+err:
+       dev_dbg(&client->dev, "failed=%d\n", ret);
+       return ret;
+}
+
+static int si2168_init(struct dvb_frontend *fe)
+{
+       struct i2c_client *client = fe->demodulator_priv;
+       struct si2168_dev *dev = i2c_get_clientdata(client);
+       int ret, len, remaining;
+       const struct firmware *fw;
+       const char *fw_name;
+       struct si2168_cmd cmd;
+       unsigned int chip_id;
+       enum si2168_chip_id {
+               SI2168_A20 = ('A' << 24 | 68 << 16 | '2' << 8 | '0' << 0),
+               SI2168_A30 = ('A' << 24 | 68 << 16 | '3' << 8 | '0' << 0),
+               SI2168_B40 = ('B' << 24 | 68 << 16 | '4' << 8 | '0' << 0)
+       };
+
+       dev_dbg(&client->dev, "\n");
+
+       /* initialize */
+       memcpy(cmd.args, "\xc0\x12\x00\x0c\x00\x0d\x16\x00\x00\x00\x00\x00\x00", 13);
+       cmd.wlen = 13;
+       cmd.rlen = 0;
+       ret = si2168_cmd_execute(client, &cmd);
+       if (ret)
+               goto err;
+
+       if (dev->fw_loaded) {
+               /* resume */
+               memcpy(cmd.args, "\xc0\x06\x08\x0f\x00\x20\x21\x01", 8);
+               cmd.wlen = 8;
+               cmd.rlen = 1;
+               ret = si2168_cmd_execute(client, &cmd);
+               if (ret)
+                       goto err;
+
+               memcpy(cmd.args, "\x85", 1);
+               cmd.wlen = 1;
+               cmd.rlen = 1;
+               ret = si2168_cmd_execute(client, &cmd);
+               if (ret)
+                       goto err;
+
+               goto warm;
+       }
+
+       /* power up */
+       memcpy(cmd.args, "\xc0\x06\x01\x0f\x00\x20\x20\x01", 8);
+       cmd.wlen = 8;
+       cmd.rlen = 1;
+       ret = si2168_cmd_execute(client, &cmd);
+       if (ret)
+               goto err;
+
+       /* query chip revision */
+       memcpy(cmd.args, "\x02", 1);
+       cmd.wlen = 1;
+       cmd.rlen = 13;
+       ret = si2168_cmd_execute(client, &cmd);
+       if (ret)
+               goto err;
+
+       chip_id = cmd.args[1] << 24 | cmd.args[2] << 16 | cmd.args[3] << 8 |
+                       cmd.args[4] << 0;
+
+       switch (chip_id) {
+       case SI2168_A20:
+               fw_name = SI2168_A20_FIRMWARE;
+               break;
+       case SI2168_A30:
+               fw_name = SI2168_A30_FIRMWARE;
+               break;
+       case SI2168_B40:
+               fw_name = SI2168_B40_FIRMWARE;
+               break;
+       default:
+               dev_err(&client->dev, "unknown chip version Si21%d-%c%c%c\n",
+                               cmd.args[2], cmd.args[1],
+                               cmd.args[3], cmd.args[4]);
+               ret = -EINVAL;
+               goto err;
+       }
+
+       dev_info(&client->dev, "found a 'Silicon Labs Si21%d-%c%c%c'\n",
+                       cmd.args[2], cmd.args[1], cmd.args[3], cmd.args[4]);
+
+       /* request the firmware, this will block and timeout */
+       ret = request_firmware(&fw, fw_name, &client->dev);
+       if (ret) {
+               /* fallback mechanism to handle old name for Si2168 B40 fw */
+               if (chip_id == SI2168_B40) {
+                       fw_name = SI2168_B40_FIRMWARE_FALLBACK;
+                       ret = request_firmware(&fw, fw_name, &client->dev);
+               }
+
+               if (ret == 0) {
+                       dev_notice(&client->dev,
+                                       "please install firmware file '%s'\n",
+                                       SI2168_B40_FIRMWARE);
+               } else {
+                       dev_err(&client->dev,
+                                       "firmware file '%s' not found\n",
+                                       fw_name);
+                       goto err_release_firmware;
+               }
+       }
+
+       dev_info(&client->dev, "downloading firmware from file '%s'\n",
+                       fw_name);
+
+       if ((fw->size % 17 == 0) && (fw->data[0] > 5)) {
+               /* firmware is in the new format */
+               for (remaining = fw->size; remaining > 0; remaining -= 17) {
+                       len = fw->data[fw->size - remaining];
+                       memcpy(cmd.args, &fw->data[(fw->size - remaining) + 1], len);
+                       cmd.wlen = len;
+                       cmd.rlen = 1;
+                       ret = si2168_cmd_execute(client, &cmd);
+                       if (ret)
+                               break;
+               }
+       } else if (fw->size % 8 == 0) {
+               /* firmware is in the old format */
+               for (remaining = fw->size; remaining > 0; remaining -= 8) {
+                       len = 8;
+                       memcpy(cmd.args, &fw->data[fw->size - remaining], len);
+                       cmd.wlen = len;
+                       cmd.rlen = 1;
+                       ret = si2168_cmd_execute(client, &cmd);
+                       if (ret)
+                               break;
+               }
+       } else {
+               /* bad or unknown firmware format */
+               ret = -EINVAL;
+       }
+
+       if (ret) {
+               dev_err(&client->dev, "firmware download failed %d\n", ret);
+               goto err_release_firmware;
+       }
+
+       release_firmware(fw);
+
+       memcpy(cmd.args, "\x01\x01", 2);
+       cmd.wlen = 2;
+       cmd.rlen = 1;
+       ret = si2168_cmd_execute(client, &cmd);
+       if (ret)
+               goto err;
+
+       /* query firmware version */
+       memcpy(cmd.args, "\x11", 1);
+       cmd.wlen = 1;
+       cmd.rlen = 10;
+       ret = si2168_cmd_execute(client, &cmd);
+       if (ret)
+               goto err;
+
+       dev_info(&client->dev, "firmware version: %c.%c.%d\n",
+                       cmd.args[6], cmd.args[7], cmd.args[8]);
+
+       /* set ts mode */
+       memcpy(cmd.args, "\x14\x00\x01\x10\x10\x00", 6);
+       cmd.args[4] |= dev->ts_mode;
+       if (dev->ts_clock_gapped)
+               cmd.args[4] |= 0x40;
+       cmd.wlen = 6;
+       cmd.rlen = 4;
+       ret = si2168_cmd_execute(client, &cmd);
+       if (ret)
+               goto err;
+
+       dev->fw_loaded = true;
+warm:
+       dev->active = true;
+
+       return 0;
+
+err_release_firmware:
+       release_firmware(fw);
+err:
+       dev_dbg(&client->dev, "failed=%d\n", ret);
+       return ret;
+}
+
+static int si2168_sleep(struct dvb_frontend *fe)
+{
+       struct i2c_client *client = fe->demodulator_priv;
+       struct si2168_dev *dev = i2c_get_clientdata(client);
+       int ret;
+       struct si2168_cmd cmd;
+
+       dev_dbg(&client->dev, "\n");
+
+       dev->active = false;
+
+       memcpy(cmd.args, "\x13", 1);
+       cmd.wlen = 1;
+       cmd.rlen = 0;
+       ret = si2168_cmd_execute(client, &cmd);
+       if (ret)
+               goto err;
+
+       return 0;
+err:
+       dev_dbg(&client->dev, "failed=%d\n", ret);
+       return ret;
+}
+
+static int si2168_get_tune_settings(struct dvb_frontend *fe,
+       struct dvb_frontend_tune_settings *s)
+{
+       s->min_delay_ms = 900;
+
+       return 0;
+}
+
+/*
+ * I2C gate logic
+ * We must use unlocked I2C I/O because I2C adapter lock is already taken
+ * by the caller (usually tuner driver).
+ */
+static int si2168_select(struct i2c_adapter *adap, void *mux_priv, u32 chan)
+{
+       struct i2c_client *client = mux_priv;
+       int ret;
+       struct si2168_cmd cmd;
+
+       /* open I2C gate */
+       memcpy(cmd.args, "\xc0\x0d\x01", 3);
+       cmd.wlen = 3;
+       cmd.rlen = 0;
+       ret = si2168_cmd_execute_unlocked(client, &cmd);
+       if (ret)
+               goto err;
+
+       return 0;
+err:
+       dev_dbg(&client->dev, "failed=%d\n", ret);
+       return ret;
+}
+
+static int si2168_deselect(struct i2c_adapter *adap, void *mux_priv, u32 chan)
+{
+       struct i2c_client *client = mux_priv;
+       int ret;
+       struct si2168_cmd cmd;
+
+       /* close I2C gate */
+       memcpy(cmd.args, "\xc0\x0d\x00", 3);
+       cmd.wlen = 3;
+       cmd.rlen = 0;
+       ret = si2168_cmd_execute_unlocked(client, &cmd);
+       if (ret)
+               goto err;
+
+       return 0;
+err:
+       dev_dbg(&client->dev, "failed=%d\n", ret);
+       return ret;
+}
+
+static const struct dvb_frontend_ops si2168_ops = {
+       .delsys = {SYS_DVBT, SYS_DVBT2, SYS_DVBC_ANNEX_A},
+       .info = {
+               .name = "Silicon Labs Si2168",
+               .symbol_rate_min = 1000000,
+               .symbol_rate_max = 7200000,
+               .caps = FE_CAN_FEC_1_2 |
+                       FE_CAN_FEC_2_3 |
+                       FE_CAN_FEC_3_4 |
+                       FE_CAN_FEC_5_6 |
+                       FE_CAN_FEC_7_8 |
+                       FE_CAN_FEC_AUTO |
+                       FE_CAN_QPSK |
+                       FE_CAN_QAM_16 |
+                       FE_CAN_QAM_32 |
+                       FE_CAN_QAM_64 |
+                       FE_CAN_QAM_128 |
+                       FE_CAN_QAM_256 |
+                       FE_CAN_QAM_AUTO |
+                       FE_CAN_TRANSMISSION_MODE_AUTO |
+                       FE_CAN_GUARD_INTERVAL_AUTO |
+                       FE_CAN_HIERARCHY_AUTO |
+                       FE_CAN_MUTE_TS |
+                       FE_CAN_2G_MODULATION |
+                       FE_CAN_MULTISTREAM
+       },
+
+       .get_tune_settings = si2168_get_tune_settings,
+
+       .init = si2168_init,
+       .sleep = si2168_sleep,
+
+       .set_frontend = si2168_set_frontend,
+
+       .read_status = si2168_read_status,
+};
+
+static int si2168_probe(struct i2c_client *client,
+               const struct i2c_device_id *id)
+{
+       struct si2168_config *config = client->dev.platform_data;
+       struct si2168_dev *dev;
+       int ret;
+
+       dev_dbg(&client->dev, "\n");
+
+       dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+       if (!dev) {
+               ret = -ENOMEM;
+               dev_err(&client->dev, "kzalloc() failed\n");
+               goto err;
+       }
+
+       /* create mux i2c adapter for tuner */
+       dev->adapter = i2c_add_mux_adapter(client->adapter, &client->dev,
+                       client, 0, 0, 0, si2168_select, si2168_deselect);
+       if (dev->adapter == NULL) {
+               ret = -ENODEV;
+               goto err_kfree;
+       }
+
+       /* create dvb_frontend */
+       memcpy(&dev->fe.ops, &si2168_ops, sizeof(struct dvb_frontend_ops));
+       dev->fe.demodulator_priv = client;
+       *config->i2c_adapter = dev->adapter;
+       *config->fe = &dev->fe;
+       dev->ts_mode = config->ts_mode;
+       dev->ts_clock_inv = config->ts_clock_inv;
+       dev->ts_clock_gapped = config->ts_clock_gapped;
+       dev->fw_loaded = false;
+
+       i2c_set_clientdata(client, dev);
+
+       dev_info(&client->dev, "Silicon Labs Si2168 successfully attached\n");
+       return 0;
+err_kfree:
+       kfree(dev);
+err:
+       dev_dbg(&client->dev, "failed=%d\n", ret);
+       return ret;
+}
+
+static int si2168_remove(struct i2c_client *client)
+{
+       struct si2168_dev *dev = i2c_get_clientdata(client);
+
+       dev_dbg(&client->dev, "\n");
+
+       i2c_del_mux_adapter(dev->adapter);
+
+       dev->fe.ops.release = NULL;
+       dev->fe.demodulator_priv = NULL;
+
+       kfree(dev);
+
+       return 0;
+}
+
+static const struct i2c_device_id si2168_id_table[] = {
+       {"si2168", 0},
+       {}
+};
+MODULE_DEVICE_TABLE(i2c, si2168_id_table);
+
+static struct i2c_driver si2168_driver = {
+       .driver = {
+               .owner  = THIS_MODULE,
+               .name   = "si2168",
+       },
+       .probe          = si2168_probe,
+       .remove         = si2168_remove,
+       .id_table       = si2168_id_table,
+};
+
+module_i2c_driver(si2168_driver);
+
+MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
+MODULE_DESCRIPTION("Silicon Labs Si2168 DVB-T/T2/C demodulator driver");
+MODULE_LICENSE("GPL");
+MODULE_FIRMWARE(SI2168_A20_FIRMWARE);
+MODULE_FIRMWARE(SI2168_A30_FIRMWARE);
+MODULE_FIRMWARE(SI2168_B40_FIRMWARE);
diff --git a/drivers/media/dvb-frontends/si2168.h b/drivers/media/dvb-frontends/si2168.h
new file mode 100644 (file)
index 0000000..3225d0c
--- /dev/null
@@ -0,0 +1,50 @@
+/*
+ * Silicon Labs Si2168 DVB-T/T2/C demodulator driver
+ *
+ * Copyright (C) 2014 Antti Palosaari <crope@iki.fi>
+ *
+ *    This program is free software; you can redistribute it and/or modify
+ *    it under the terms of the GNU General Public License as published by
+ *    the Free Software Foundation; either version 2 of the License, or
+ *    (at your option) any later version.
+ *
+ *    This program is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *    GNU General Public License for more details.
+ */
+
+#ifndef SI2168_H
+#define SI2168_H
+
+#include <linux/dvb/frontend.h>
+/*
+ * I2C address
+ * 0x64
+ */
+struct si2168_config {
+       /*
+        * frontend
+        * returned by driver
+        */
+       struct dvb_frontend **fe;
+
+       /*
+        * tuner I2C adapter
+        * returned by driver
+        */
+       struct i2c_adapter **i2c_adapter;
+
+       /* TS mode */
+#define SI2168_TS_PARALLEL     0x06
+#define SI2168_TS_SERIAL       0x03
+       u8 ts_mode;
+
+       /* TS clock inverted */
+       bool ts_clock_inv;
+
+       /* TS clock gapped */
+       bool ts_clock_gapped;
+};
+
+#endif
diff --git a/drivers/media/dvb-frontends/si2168_priv.h b/drivers/media/dvb-frontends/si2168_priv.h
new file mode 100644 (file)
index 0000000..c07e6fe
--- /dev/null
@@ -0,0 +1,51 @@
+/*
+ * Silicon Labs Si2168 DVB-T/T2/C demodulator driver
+ *
+ * Copyright (C) 2014 Antti Palosaari <crope@iki.fi>
+ *
+ *    This program is free software; you can redistribute it and/or modify
+ *    it under the terms of the GNU General Public License as published by
+ *    the Free Software Foundation; either version 2 of the License, or
+ *    (at your option) any later version.
+ *
+ *    This program is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *    GNU General Public License for more details.
+ */
+
+#ifndef SI2168_PRIV_H
+#define SI2168_PRIV_H
+
+#include "si2168.h"
+#include "dvb_frontend.h"
+#include <linux/firmware.h>
+#include <linux/i2c-mux.h>
+
+#define SI2168_A20_FIRMWARE "dvb-demod-si2168-a20-01.fw"
+#define SI2168_A30_FIRMWARE "dvb-demod-si2168-a30-01.fw"
+#define SI2168_B40_FIRMWARE "dvb-demod-si2168-b40-01.fw"
+#define SI2168_B40_FIRMWARE_FALLBACK "dvb-demod-si2168-02.fw"
+
+/* state struct */
+struct si2168_dev {
+       struct i2c_adapter *adapter;
+       struct dvb_frontend fe;
+       enum fe_delivery_system delivery_system;
+       enum fe_status fe_status;
+       bool active;
+       bool fw_loaded;
+       u8 ts_mode;
+       bool ts_clock_inv;
+       bool ts_clock_gapped;
+};
+
+/* firmware command struct */
+#define SI2168_ARGLEN      30
+struct si2168_cmd {
+       u8 args[SI2168_ARGLEN];
+       unsigned wlen;
+       unsigned rlen;
+};
+
+#endif