[media] ngene: CXD2099AR Common Interface driver

Driver for the Common Interface Controller CXD2099AR.
Supports the CI of the cineS2 DVB-S2.

For now, data is passed through '/dev/dvb/adapterX/sec0':
- Encrypted data must be written to 'sec0'.
- Decrypted data can be read from 'sec0'.
- Setup the CAM using device 'ca0'.
Signed-off-by: Ralph Metzler <rjkm@metzlerbros.de>
Signed-off-by: Oliver Endriss <o.endriss@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/dvb/ngene/Makefile

@@ -2,7 +2,7 @@
 # Makefile for the nGene device driver
 #
 
-ngene-objs := ngene-core.o ngene-i2c.o ngene-cards.o ngene-dvb.o
+ngene-objs := ngene-core.o ngene-i2c.o ngene-cards.o ngene-dvb.o cxd2099.o
 
 obj-$(CONFIG_DVB_NGENE) += ngene.o
 

drivers/media/dvb/ngene/cxd2099.h

+/*
+ * cxd2099.h: Driver for the CXD2099AR Common Interface Controller
+ *
+ * Copyright (C) 2010 DigitalDevices UG
+ *
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 only, as published by the Free Software Foundation.
+ *
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ * Or, point your browser to http://www.gnu.org/copyleft/gpl.html
+ */
+
+#ifndef _CXD2099_H_
+#define _CXD2099_H_
+
+#include <dvb_ca_en50221.h>
+
+struct dvb_ca_en50221 *cxd2099_attach(u8 adr, void *priv, struct i2c_adapter *i2c);
+
+#endif

drivers/media/dvb/ngene/ngene-cards.c

@@ -317,7 +317,8 @@ static struct ngene_info ngene_info_satixS2v2 = {
 static struct ngene_info ngene_info_cineS2v5 = {
 	.type		= NGENE_SIDEWINDER,
 	.name		= "Linux4Media cineS2 DVB-S2 Twin Tuner (v5)",
-	.io_type	= {NGENE_IO_TSIN, NGENE_IO_TSIN, NGENE_IO_TSIN, NGENE_IO_TSIN},
+	.io_type	= {NGENE_IO_TSIN, NGENE_IO_TSIN, NGENE_IO_TSIN, NGENE_IO_TSIN,
+			   NGENE_IO_TSOUT},
 	.demod_attach	= {demod_attach_stv0900, demod_attach_stv0900, cineS2_probe, cineS2_probe},
 	.tuner_attach	= {tuner_attach_stv6110, tuner_attach_stv6110, tuner_attach_stv6110, tuner_attach_stv6110},
 	.fe_config	= {&fe_cineS2, &fe_cineS2, &fe_cineS2_2, &fe_cineS2_2},
@@ -332,7 +333,8 @@ static struct ngene_info ngene_info_cineS2v5 = {
 static struct ngene_info ngene_info_duoFlexS2 = {
 	.type           = NGENE_SIDEWINDER,
 	.name           = "Digital Devices DuoFlex S2 miniPCIe",
-	.io_type        = {NGENE_IO_TSIN, NGENE_IO_TSIN, NGENE_IO_TSIN, NGENE_IO_TSIN},
+	.io_type        = {NGENE_IO_TSIN, NGENE_IO_TSIN, NGENE_IO_TSIN, NGENE_IO_TSIN,
+			   NGENE_IO_TSOUT},
 	.demod_attach   = {cineS2_probe, cineS2_probe, cineS2_probe, cineS2_probe},
 	.tuner_attach   = {tuner_attach_stv6110, tuner_attach_stv6110, tuner_attach_stv6110, tuner_attach_stv6110},
 	.fe_config      = {&fe_cineS2, &fe_cineS2, &fe_cineS2_2, &fe_cineS2_2},

drivers/media/dvb/ngene/ngene-core.c

@@ -45,7 +45,6 @@ static int one_adapter = 1;
 module_param(one_adapter, int, 0444);
 MODULE_PARM_DESC(one_adapter, "Use only one adapter.");
 
-
 static int debug;
 module_param(debug, int, 0444);
 MODULE_PARM_DESC(debug, "Print debugging information.");
@@ -476,7 +475,7 @@ static u8 SPDIFConfiguration[10] = {
 
 static u8 TS_I2SConfiguration[4] = { 0x3E, 0x18, 0x00, 0x00 };
 
-static u8 TS_I2SOutConfiguration[4] = { 0x80, 0x20, 0x00, 0x00 };
+static u8 TS_I2SOutConfiguration[4] = { 0x80, 0x04, 0x00, 0x00 };
 
 static u8 ITUDecoderSetup[4][16] = {
 	{0x1c, 0x13, 0x01, 0x68, 0x3d, 0x90, 0x14, 0x20,  /* SDTV */
@@ -749,13 +748,11 @@ void set_transfer(struct ngene_channel *chan, int state)
 		if (chan->mode & NGENE_IO_TSOUT) {
 			chan->pBufferExchange = tsout_exchange;
 			/* 0x66666666 = 50MHz *2^33 /250MHz */
-			chan->AudioDTOValue = 0x66666666;
-			/* set_dto(chan, 38810700+1000); */
-			/* set_dto(chan, 19392658); */
+			chan->AudioDTOValue = 0x80000000;
+			chan->AudioDTOUpdated = 1;
 		}
 		if (chan->mode & NGENE_IO_TSIN)
 			chan->pBufferExchange = tsin_exchange;
-		/* ngwritel(0, 0x9310); */
 		spin_unlock_irq(&chan->state_lock);
 	} else
 		;/* printk(KERN_INFO DEVICE_NAME ": lock=%08x\n",
@@ -1168,6 +1165,7 @@ static void ngene_release_buffers(struct ngene *dev)
 		iounmap(dev->iomem);
 	free_common_buffers(dev);
 	vfree(dev->tsout_buf);
+	vfree(dev->tsin_buf);
 	vfree(dev->ain_buf);
 	vfree(dev->vin_buf);
 	vfree(dev);
@@ -1184,6 +1182,13 @@ static int ngene_get_buffers(struct ngene *dev)
 		dvb_ringbuffer_init(&dev->tsout_rbuf,
 				    dev->tsout_buf, TSOUT_BUF_SIZE);
 	}
+	if (dev->card_info->io_type[2]&NGENE_IO_TSIN) {
+		dev->tsin_buf = vmalloc(TSIN_BUF_SIZE);
+		if (!dev->tsin_buf)
+			return -ENOMEM;
+		dvb_ringbuffer_init(&dev->tsin_rbuf,
+				    dev->tsin_buf, TSIN_BUF_SIZE);
+	}
 	if (dev->card_info->io_type[2] & NGENE_IO_AIN) {
 		dev->ain_buf = vmalloc(AIN_BUF_SIZE);
 		if (!dev->ain_buf)
@@ -1307,6 +1312,35 @@ static void ngene_stop(struct ngene *dev)
 #endif
 }
 
+static int ngene_buffer_config(struct ngene *dev)
+{
+	int stat;
+
+	if (dev->card_info->fw_version >= 17) {
+		u8 tsin12_config[6]   = { 0x60, 0x60, 0x00, 0x00, 0x00, 0x00 };
+		u8 tsin1234_config[6] = { 0x30, 0x30, 0x00, 0x30, 0x30, 0x00 };
+		u8 tsio1235_config[6] = { 0x30, 0x30, 0x00, 0x28, 0x00, 0x38 };
+		u8 *bconf = tsin12_config;
+
+		if (dev->card_info->io_type[2]&NGENE_IO_TSIN &&
+		    dev->card_info->io_type[3]&NGENE_IO_TSIN) {
+			bconf = tsin1234_config;
+			if (dev->card_info->io_type[4]&NGENE_IO_TSOUT &&
+			    dev->ci.en)
+				bconf = tsio1235_config;
+		}
+		stat = ngene_command_config_free_buf(dev, bconf);
+	} else {
+		int bconf = BUFFER_CONFIG_4422;
+
+		if (dev->card_info->io_type[3] == NGENE_IO_TSIN)
+			bconf = BUFFER_CONFIG_3333;
+		stat = ngene_command_config_buf(dev, bconf);
+	}
+	return stat;
+}
+
+
 static int ngene_start(struct ngene *dev)
 {
 	int stat;
@@ -1371,23 +1405,6 @@ static int ngene_start(struct ngene *dev)
 	if (stat < 0)
 		goto fail;
 
-	if (dev->card_info->fw_version >= 17) {
-		u8 tsin4_config[6] = {
-			3072 / 64, 3072 / 64, 0, 3072 / 64, 3072 / 64, 0};
-		u8 default_config[6] = {
-			4096 / 64, 4096 / 64, 0, 2048 / 64, 2048 / 64, 0};
-		u8 *bconf = default_config;
-
-		if (dev->card_info->io_type[3] == NGENE_IO_TSIN)
-			bconf = tsin4_config;
-		dprintk(KERN_DEBUG DEVICE_NAME ": FW 17+ buffer config\n");
-		stat = ngene_command_config_free_buf(dev, bconf);
-	} else {
-		int bconf = BUFFER_CONFIG_4422;
-		if (dev->card_info->io_type[3] == NGENE_IO_TSIN)
-			bconf = BUFFER_CONFIG_3333;
-		stat = ngene_command_config_buf(dev, bconf);
-	}
 	if (!stat)
 		return stat;
 
@@ -1403,9 +1420,6 @@ static int ngene_start(struct ngene *dev)
 	return stat;
 }
 
-
-
-
 /****************************************************************************/
 /****************************************************************************/
 /****************************************************************************/
@@ -1422,7 +1436,12 @@ static void release_channel(struct ngene_channel *chan)
 
 	tasklet_kill(&chan->demux_tasklet);
 
+	if (chan->number >= 2 && chan->number <= 3 && dev->ci.en)
+		return;
+
 	if (io & (NGENE_IO_TSIN | NGENE_IO_TSOUT)) {
+		if (chan->ci_dev)
+			dvb_unregister_device(chan->ci_dev);
 		if (chan->fe) {
 			dvb_unregister_frontend(chan->fe);
 			dvb_frontend_detach(chan->fe);
@@ -1458,6 +1477,9 @@ static int init_channel(struct ngene_channel *chan)
 	if (io & (NGENE_IO_TSIN | NGENE_IO_TSOUT)) {
 		if (nr >= STREAM_AUDIOIN1)
 			chan->DataFormatFlags = DF_SWAP32;
+
+		if (nr >= 2 && nr <= 3 && dev->ci.en)
+			return 0;
 		if (nr == 0 || !one_adapter || dev->first_adapter == NULL) {
 			adapter = &dev->adapter[nr];
 			ret = dvb_register_adapter(adapter, "nGene",
@@ -1478,6 +1500,15 @@ static int init_channel(struct ngene_channel *chan)
 		ret = my_dvb_dmxdev_ts_card_init(&chan->dmxdev, &chan->demux,
 						 &chan->hw_frontend,
 						 &chan->mem_frontend, adapter);
+		if (dev->ci.en && (io&NGENE_IO_TSOUT)) {
+			dvb_ca_en50221_init(adapter, dev->ci.en, 0, 1);
+			set_transfer(chan, 1);
+			set_transfer(&chan->dev->channel[2], 1);
+
+			dvb_register_device(adapter, &chan->ci_dev,
+					    &ngene_dvbdev_ci, (void *) chan,
+					    DVB_DEVICE_SEC);
+		}
 	}
 
 	if (io & NGENE_IO_TSIN) {
@@ -1525,6 +1556,24 @@ static int init_channels(struct ngene *dev)
 	return 0;
 }
 
+static void cxd_attach(struct ngene *dev)
+{
+	struct ngene_ci *ci = &dev->ci;
+
+	ci->en = cxd2099_attach(0x40, dev, &dev->channel[0].i2c_adapter);
+	ci->dev = dev;
+	return;
+}
+
+static void cxd_detach(struct ngene *dev)
+{
+	struct ngene_ci *ci = &dev->ci;
+
+	dvb_ca_en50221_release(ci->en);
+	kfree(ci->en);
+	ci->en = 0;
+}
+
 /****************************************************************************/
 /* device probe/remove calls ************************************************/
 /****************************************************************************/
@@ -1537,6 +1586,8 @@ void __devexit ngene_remove(struct pci_dev *pdev)
 	tasklet_kill(&dev->event_tasklet);
 	for (i = MAX_STREAM - 1; i >= 0; i--)
 		release_channel(&dev->channel[i]);
+	if (dev->ci.en)
+		cxd_detach(dev);
 	ngene_stop(dev);
 	ngene_release_buffers(dev);
 	pci_set_drvdata(pdev, NULL);
@@ -1572,6 +1623,13 @@ int __devinit ngene_probe(struct pci_dev *pci_dev,
 	if (stat < 0)
 		goto fail1;
 
+	cxd_attach(dev);
+
+	stat = ngene_buffer_config(dev);
+	if (stat < 0)
+		goto fail1;
+
+
 	dev->i2c_current_bus = -1;
 
 	/* Register DVB adapters and devices for both channels */

drivers/media/dvb/ngene/ngene-dvb.c

@@ -47,6 +47,64 @@
 /* COMMAND API interface ****************************************************/
 /****************************************************************************/
 
+static ssize_t ts_write(struct file *file, const char *buf,
+			size_t count, loff_t *ppos)
+{
+	struct dvb_device *dvbdev = file->private_data;
+	struct ngene_channel *chan = dvbdev->priv;
+	struct ngene *dev = chan->dev;
+
+	if (wait_event_interruptible(dev->tsout_rbuf.queue,
+				     dvb_ringbuffer_free
+				     (&dev->tsout_rbuf) >= count) < 0)
+		return 0;
+
+	dvb_ringbuffer_write(&dev->tsout_rbuf, buf, count);
+
+	return count;
+}
+
+static ssize_t ts_read(struct file *file, char *buf,
+		       size_t count, loff_t *ppos)
+{
+	struct dvb_device *dvbdev = file->private_data;
+	struct ngene_channel *chan = dvbdev->priv;
+	struct ngene *dev = chan->dev;
+	int left, avail;
+
+	left = count;
+	while (left) {
+		if (wait_event_interruptible(
+			    dev->tsin_rbuf.queue,
+			    dvb_ringbuffer_avail(&dev->tsin_rbuf) > 0) < 0)
+			return -EAGAIN;
+		avail = dvb_ringbuffer_avail(&dev->tsin_rbuf);
+		if (avail > left)
+			avail = left;
+		dvb_ringbuffer_read_user(&dev->tsin_rbuf, buf, avail);
+		left -= avail;
+		buf += avail;
+	}
+	return count;
+}
+
+static const struct file_operations ci_fops = {
+	.owner   = THIS_MODULE,
+	.read    = ts_read,
+	.write   = ts_write,
+	.open    = dvb_generic_open,
+	.release = dvb_generic_release,
+};
+
+struct dvb_device ngene_dvbdev_ci = {
+	.priv    = 0,
+	.readers = -1,
+	.writers = -1,
+	.users   = -1,
+	.fops    = &ci_fops,
+};
+
+
 /****************************************************************************/
 /* DVB functions and API interface ******************************************/
 /****************************************************************************/
@@ -63,11 +121,19 @@ static void swap_buffer(u32 *p, u32 len)
 void *tsin_exchange(void *priv, void *buf, u32 len, u32 clock, u32 flags)
 {
 	struct ngene_channel *chan = priv;
+	struct ngene *dev = chan->dev;
 
 
+	if (flags & DF_SWAP32)
+		swap_buffer(buf, len);
+	if (dev->ci.en && chan->number == 2) {
+		if (dvb_ringbuffer_free(&dev->tsin_rbuf) > len) {
+			dvb_ringbuffer_write(&dev->tsin_rbuf, buf, len);
+			wake_up_interruptible(&dev->tsin_rbuf.queue);
+		}
+		return 0;
+	}
 	if (chan->users > 0) {
-		if (flags & DF_SWAP32)
-			swap_buffer(buf, len);
 		dvb_dmx_swfilter(&chan->demux, buf, len);
 	}
 	return NULL;

drivers/media/dvb/ngene/ngene.h

@@ -36,8 +36,10 @@
 #include "dmxdev.h"
 #include "dvbdev.h"
 #include "dvb_demux.h"
+#include "dvb_ca_en50221.h"
 #include "dvb_frontend.h"
 #include "dvb_ringbuffer.h"
+#include "cxd2099.h"
 
 #define DEVICE_NAME "ngene"
 
@@ -644,6 +646,7 @@ struct ngene_channel {
 	struct dmx_frontend   mem_frontend;
 	int                   users;
 	struct video_device  *v4l_dev;
+	struct dvb_device    *ci_dev;
 	struct tasklet_struct demux_tasklet;
 
 	struct SBufferHeader *nextBuffer;
@@ -710,6 +713,15 @@ struct ngene_channel {
 	int running;
 };
 
+
+struct ngene_ci {
+	struct device         device;
+	struct i2c_adapter    i2c_adapter;
+
+	struct ngene         *dev;
+	struct dvb_ca_en50221 *en;
+};
+
 struct ngene;
 
 typedef void (rx_cb_t)(struct ngene *, u32, u8);
@@ -774,6 +786,10 @@ struct ngene {
 #define TSOUT_BUF_SIZE (512*188*8)
 	struct dvb_ringbuffer tsout_rbuf;
 
+	u8                   *tsin_buf;
+#define TSIN_BUF_SIZE (512*188*8)
+	struct dvb_ringbuffer tsin_rbuf;
+
 	u8                   *ain_buf;
 #define AIN_BUF_SIZE (128*1024)
 	struct dvb_ringbuffer ain_rbuf;
@@ -785,6 +801,8 @@ struct ngene {
 
 	unsigned long         exp_val;
 	int prev_cmd;
+
+	struct ngene_ci       ci;
 };
 
 struct ngene_info {
@@ -872,6 +890,7 @@ void FillTSBuffer(void *Buffer, int Length, u32 Flags);
 int ngene_i2c_init(struct ngene *dev, int dev_nr);
 
 /* Provided by ngene-dvb.c */
+extern struct dvb_device ngene_dvbdev_ci;
 void *tsout_exchange(void *priv, void *buf, u32 len, u32 clock, u32 flags);
 void *tsin_exchange(void *priv, void *buf, u32 len, u32 clock, u32 flags);
 int ngene_start_feed(struct dvb_demux_feed *dvbdmxfeed);