media: ddbridge: split code into multiple files

As of 0.9.9b, the ddbridge code has been split from one single file
(ddbridge-core.c) into multiple files, with the purpose of taking care of
different topics, and to be able to reuse code in different kernel modules
(ddbridge.ko and octonet.ko). This applies the same code split, with a
notable difference:

In the vendor package, the split was done by moving all code parts into
separate files, and in the "main" code files (ddbridge.c and octonet.c),
a simple "#include ddbridge-core.c" was done.

In this patch, the same split (codewise) is done, but all resulting .c/.o
files will be handled by the makefile, with proper prototyping of all
shared functions done in ddbridge.h. To avoid conflicts wrt the global
space, the I2C functions and necessary prototypes for ddbridge-i2c.c are
moved into ddbridge-i2c.h, which is to be included wherever required.

Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Tested-by: Richard Scobie <r.scobie@clear.net.nz>
Tested-by: Jasmin Jessich <jasmin@anw.at>
Tested-by: Dietmar Spingler <d_spingler@freenet.de>
Tested-by: Manfred Knick <Manfred.Knick@t-online.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

1 files changed, 35 insertions, 0 deletions

diff --git a/drivers/media/pci/ddbridge/ddbridge.h b/drivers/media/pci/ddbridge/ddbridge.h
index 4783a17175a8..4290a1e28531 100644
--- a/drivers/media/pci/ddbridge/ddbridge.h
+++ b/drivers/media/pci/ddbridge/ddbridge.h
@@ -39,6 +39,9 @@
 #include "dvb_net.h"
 #include "cxd2099.h"
 
+/* MSI had problems with lost interrupts, fixed but needs testing */
+#undef CONFIG_PCI_MSI
+
 #define DDB_MAX_I2C     4
 #define DDB_MAX_PORT    4
 #define DDB_MAX_INPUT   8
@@ -205,4 +208,36 @@ struct ddb {
 
 /****************************************************************************/
 
+static inline u32 safe_ddbreadl(struct ddb *dev, u32 adr)
+{
+        u32 val = ddbreadl(adr);
+
+        /* (ddb)readl returns (uint)-1 (all bits set) on failure, catch that */
+        if (val == ~0) {
+                dev_err(&dev->pdev->dev, "ddbreadl failure, adr=%08x\n", adr);
+                return 0;
+        }
+
+	return val;
+}
+
+/****************************************************************************/
+
+/* ddbridge-main.c (modparams) */
+extern int xo2_speed;
+extern int stv0910_single;
+
+/* ddbridge-core.c */
+void ddb_ports_detach(struct ddb *dev);
+void ddb_ports_release(struct ddb *dev);
+void ddb_buffers_free(struct ddb *dev);
+void ddb_device_destroy(struct ddb *dev);
+irqreturn_t irq_handler(int irq, void *dev_id);
+void ddb_ports_init(struct ddb *dev);
+int ddb_buffers_alloc(struct ddb *dev);
+int ddb_ports_attach(struct ddb *dev);
+int ddb_device_create(struct ddb *dev);
+int ddb_class_create(void);
+void ddb_class_destroy(void);
+
 #endif