V4L/DVB (6150): Add CX23885/CX23887 PCIe bridge driver

This is a new framework to support boards based on the CX23885/7 PCIe
bridge. The framework supports digital (no analog yet)

Signed-off-by: Steven Toth <stoth@hauppauge.com>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 199 insertions, 0 deletions

diff --git a/drivers/media/video/cx23885/cx23885-dvb.c b/drivers/media/video/cx23885/cx23885-dvb.c
new file mode 100644
index 000000000000..4ff85f75f9f7
--- /dev/null
+++ b/drivers/media/video/cx23885/cx23885-dvb.c
@@ -0,0 +1,199 @@
+/*
+ *  Driver for the Conexant CX23885 PCIe bridge
+ *
+ *  Copyright (c) 2006 Steven Toth <stoth@hauppauge.com>
+ *
+ *  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/module.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/fs.h>
+#include <linux/kthread.h>
+#include <linux/file.h>
+#include <linux/suspend.h>
+
+#include "cx23885.h"
+#include "dvb-pll.h"
+#include <media/v4l2-common.h>
+
+#include "s5h1409.h"
+#include "mt2131.h"
+
+static unsigned int debug = 2;
+
+#define dprintk(level,fmt, arg...)      if (debug >= level) \
+        printk(KERN_DEBUG "%s: " fmt, dev->name, ## arg)
+
+/* ------------------------------------------------------------------ */
+
+static int dvb_buf_setup(struct videobuf_queue *q,
+                         unsigned int *count, unsigned int *size)
+{
+        struct cx23885_tsport *port = q->priv_data;
+
+        port->ts_packet_size  = 188 * 4;
+        port->ts_packet_count = 32;
+
+        *size  = port->ts_packet_size * port->ts_packet_count;
+        *count = 32;
+        return 0;
+}
+
+static int dvb_buf_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,
+                           enum v4l2_field field)
+{
+        struct cx23885_tsport *port = q->priv_data;
+        return cx23885_buf_prepare(q, port, (struct cx23885_buffer*)vb,field);
+}
+
+static void dvb_buf_queue(struct videobuf_queue *q, struct videobuf_buffer *vb)
+{
+        struct cx23885_tsport *port = q->priv_data;
+        cx23885_buf_queue(port, (struct cx23885_buffer*)vb);
+}
+
+static void dvb_buf_release(struct videobuf_queue *q, struct videobuf_buffer *vb)
+{
+        cx23885_free_buffer(q, (struct cx23885_buffer*)vb);
+}
+
+static struct videobuf_queue_ops dvb_qops = {
+        .buf_setup    = dvb_buf_setup,
+        .buf_prepare  = dvb_buf_prepare,
+        .buf_queue    = dvb_buf_queue,
+        .buf_release  = dvb_buf_release,
+};
+
+static struct s5h1409_config hauppauge_hvr1800lp_config = {
+        .demod_address = 0x32 >> 1,
+        .output_mode   = S5H1409_SERIAL_OUTPUT,
+        .gpio          = S5H1409_GPIO_OFF,
+        .if_freq       = 44000,
+        .inversion     = S5H1409_INVERSION_OFF
+};
+
+static struct s5h1409_config hauppauge_hvr1800_config = {
+        .demod_address = 0x32 >> 1,
+        .output_mode   = S5H1409_SERIAL_OUTPUT,
+        .gpio          = S5H1409_GPIO_ON,
+        .if_freq       = 44000,
+        .inversion     = S5H1409_INVERSION_OFF
+};
+
+
+static struct mt2131_config hauppauge_hvr1800lp_rev2_tunerconfig = {
+        0x61
+};
+
+static struct mt2131_config hauppauge_hvr1800_tunerconfig = {
+        0x61
+};
+
+static int dvb_register(struct cx23885_tsport *port)
+{
+        struct cx23885_dev *dev = port->dev;
+
+        /* init struct videobuf_dvb */
+        port->dvb.name = dev->name;
+
+        /* init frontend */
+        switch (dev->board) {
+        case CX23885_BOARD_HAUPPAUGE_HVR1800lp:
+                port->dvb.frontend = dvb_attach(s5h1409_attach,
+                                               &hauppauge_hvr1800lp_config,
+                                               &dev->i2c_bus[0].i2c_adap);
+                if (port->dvb.frontend != NULL) {
+                        dvb_attach(mt2131_attach,
+                                port->dvb.frontend,
+                                &dev->i2c_bus[0].i2c_adap,
+                                &hauppauge_hvr1800lp_rev2_tunerconfig,
+                                0);
+                }
+                break;
+        case CX23885_BOARD_HAUPPAUGE_HVR1800:
+                port->dvb.frontend = dvb_attach(s5h1409_attach,
+                                               &hauppauge_hvr1800_config,
+                                               &dev->i2c_bus[0].i2c_adap);
+                if (port->dvb.frontend != NULL) {
+                        dvb_attach(mt2131_attach,
+                                port->dvb.frontend,
+                                &dev->i2c_bus[0].i2c_adap,
+                                &hauppauge_hvr1800_tunerconfig,
+                                0);
+                }
+                break;
+        default:
+                printk("%s: The frontend of your DVB/ATSC card isn't supported yet\n",
+                       dev->name);
+                break;
+        }
+        if (NULL == port->dvb.frontend) {
+                printk("%s: frontend initialization failed\n", dev->name);
+                return -1;
+        }
+
+        /* Put the analog decoder in standby to keep it quiet */
+        cx23885_call_i2c_clients (&dev->i2c_bus[0], TUNER_SET_STANDBY, NULL);
+
+        /* register everything */
+        return videobuf_dvb_register(&port->dvb, THIS_MODULE, port, &dev->pci->dev);
+}
+
+int cx23885_dvb_register(struct cx23885_tsport *port)
+{
+        struct cx23885_dev *dev = port->dev;
+        int err;
+
+        dprintk( 1, "%s\n", __FUNCTION__);
+        dprintk( 1, " ->being probed by Card=%d Name=%s, PCI %02x:%02x\n",
+                dev->board,
+                dev->name,
+                dev->pci_bus,
+                dev->pci_slot);
+
+        err = -ENODEV;
+        if (!(cx23885_boards[dev->board].portc & CX23885_MPEG_DVB))
+                goto fail_core;
+
+        /* dvb stuff */
+        printk("%s: cx23885 based dvb card\n", dev->name);
+        videobuf_queue_init(
+                &port->dvb.dvbq,
+                &dvb_qops,
+                dev->pci,
+                &port->slock,
+                V4L2_BUF_TYPE_VIDEO_CAPTURE,
+                V4L2_FIELD_TOP,
+                sizeof(struct cx23885_buffer),
+                port);
+        err = dvb_register(port);
+        if (err != 0)
+                printk("%s() dvb_register failed err = %d\n", __FUNCTION__, err);
+
+ fail_core:
+        return err;
+}
+
+int cx23885_dvb_unregister(struct cx23885_tsport *port)
+{
+        /* dvb */
+        if(port->dvb.frontend)
+                videobuf_dvb_unregister(&port->dvb);
+
+        return 0;
+}