[PATCH] dvb: b2c2/flexcop driver refactoring part 2: add modular Flexcop driver

b2c2/flexcop driver refactoring to support PCI and USB based cards part 2: add
modular Flexcop driver

Signed-off-by: Patrick Boettcher <pb@linuxtv.org>
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 288 insertions, 0 deletions

diff --git a/drivers/media/dvb/b2c2/flexcop.c b/drivers/media/dvb/b2c2/flexcop.c
new file mode 100644
index 000000000000..1998267207fb
--- /dev/null
+++ b/drivers/media/dvb/b2c2/flexcop.c
@@ -0,0 +1,288 @@
+/*
+ * flexcop.c - driver for digital TV devices equipped with B2C2 FlexcopII(b)/III
+ *
+ * Copyright (C) 2004-5 Patrick Boettcher <patrick.boettcher@desy.de>
+ *
+ * based on the skystar2-driver
+ * Copyright (C) 2003 Vadim Catana, skystar@moldova.cc
+ *
+ * Acknowledgements:
+ *     John Jurrius from BBTI, Inc. for extensive support with
+ *         code examples and data books
+ *
+ *     Bjarne Steinsbo, bjarne at steinsbo.com (some ideas for rewriting)
+ *
+ * Contributions to the skystar2-driver have been done by
+ *     Vincenzo Di Massa, hawk.it at tiscalinet.it (several DiSEqC fixes)
+ *     Roberto Ragusa, r.ragusa at libero.it (polishing, restyling the code)
+ *     Niklas Peinecke, peinecke at gdv.uni-hannover.de (hardware pid/mac filtering)
+ *
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1
+ * 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 Lesser General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+
+#include "flexcop.h"
+
+#define DRIVER_NAME "B2C2 FlexcopII/II(b)/III digital TV receiver chip"
+#define DRIVER_AUTHOR "Patrick Boettcher <patrick.boettcher@desy.de"
+
+#ifdef CONFIG_DVB_B2C2_FLEXCOP_DEBUG
+#define DEBSTATUS ""
+#else
+#define DEBSTATUS " (debugging is not enabled)"
+#endif
+
+int b2c2_flexcop_debug;
+module_param_named(debug, b2c2_flexcop_debug,  int, 0644);
+MODULE_PARM_DESC(debug, "set debug level (1=info,2=tuner,4=i2c,8=ts,16=sram (|-able))." DEBSTATUS);
+#undef DEBSTATUS
+
+/* global zero for ibi values */
+flexcop_ibi_value ibi_zero;
+
+static int flexcop_dvb_start_feed(struct dvb_demux_feed *dvbdmxfeed)
+{
+	struct flexcop_device *fc = dvbdmxfeed->demux->priv;
+	return flexcop_pid_feed_control(fc,dvbdmxfeed,1);
+}
+
+static int flexcop_dvb_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
+{
+	struct flexcop_device *fc = dvbdmxfeed->demux->priv;
+	return flexcop_pid_feed_control(fc,dvbdmxfeed,0);
+}
+
+static int flexcop_dvb_init(struct flexcop_device *fc)
+{
+	int ret;
+	if ((ret = dvb_register_adapter(&fc->dvb_adapter,"FlexCop Digital TV device",THIS_MODULE)) < 0) {
+		err("error registering DVB adapter");
+		return ret;
+	}
+	fc->dvb_adapter.priv = fc;
+
+	fc->demux.dmx.capabilities = (DMX_TS_FILTERING | DMX_SECTION_FILTERING | DMX_MEMORY_BASED_FILTERING);
+	fc->demux.priv = fc;
+
+	fc->demux.filternum = fc->demux.feednum = FC_MAX_FEED;
+
+	fc->demux.start_feed = flexcop_dvb_start_feed;
+	fc->demux.stop_feed = flexcop_dvb_stop_feed;
+	fc->demux.write_to_decoder = NULL;
+
+	if ((ret = dvb_dmx_init(&fc->demux)) < 0) {
+		err("dvb_dmx failed: error %d",ret);
+		goto err_dmx;
+	}
+
+	fc->hw_frontend.source = DMX_FRONTEND_0;
+
+	fc->dmxdev.filternum = fc->demux.feednum;
+	fc->dmxdev.demux = &fc->demux.dmx;
+	fc->dmxdev.capabilities = 0;
+	if ((ret = dvb_dmxdev_init(&fc->dmxdev, &fc->dvb_adapter)) < 0) {
+		err("dvb_dmxdev_init failed: error %d",ret);
+		goto err_dmx_dev;
+	}
+
+	if ((ret = fc->demux.dmx.add_frontend(&fc->demux.dmx, &fc->hw_frontend)) < 0) {
+		err("adding hw_frontend to dmx failed: error %d",ret);
+		goto err_dmx_add_hw_frontend;
+	}
+
+	fc->mem_frontend.source = DMX_MEMORY_FE;
+	if ((ret = fc->demux.dmx.add_frontend(&fc->demux.dmx, &fc->mem_frontend)) < 0) {
+		err("adding mem_frontend to dmx failed: error %d",ret);
+		goto err_dmx_add_mem_frontend;
+	}
+
+	if ((ret = fc->demux.dmx.connect_frontend(&fc->demux.dmx, &fc->hw_frontend)) < 0) {
+		err("connect frontend failed: error %d",ret);
+		goto err_connect_frontend;
+	}
+
+	dvb_net_init(&fc->dvb_adapter, &fc->dvbnet, &fc->demux.dmx);
+
+	fc->init_state |= FC_STATE_DVB_INIT;
+	goto success;
+
+err_connect_frontend:
+	fc->demux.dmx.remove_frontend(&fc->demux.dmx,&fc->mem_frontend);
+err_dmx_add_mem_frontend:
+	fc->demux.dmx.remove_frontend(&fc->demux.dmx,&fc->hw_frontend);
+err_dmx_add_hw_frontend:
+	dvb_dmxdev_release(&fc->dmxdev);
+err_dmx_dev:
+	dvb_dmx_release(&fc->demux);
+err_dmx:
+	dvb_unregister_adapter(&fc->dvb_adapter);
+	return ret;
+
+success:
+	return 0;
+}
+
+static void flexcop_dvb_exit(struct flexcop_device *fc)
+{
+	if (fc->init_state & FC_STATE_DVB_INIT) {
+		dvb_net_release(&fc->dvbnet);
+
+		fc->demux.dmx.close(&fc->demux.dmx);
+		fc->demux.dmx.remove_frontend(&fc->demux.dmx,&fc->mem_frontend);
+		fc->demux.dmx.remove_frontend(&fc->demux.dmx,&fc->hw_frontend);
+		dvb_dmxdev_release(&fc->dmxdev);
+		dvb_dmx_release(&fc->demux);
+		dvb_unregister_adapter(&fc->dvb_adapter);
+
+		deb_info("deinitialized dvb stuff\n");
+	}
+	fc->init_state &= ~FC_STATE_DVB_INIT;
+}
+
+/* these methods are necessary to achieve the long-term-goal of hiding the
+ * struct flexcop_device from the bus-parts */
+void flexcop_pass_dmx_data(struct flexcop_device *fc, u8 *buf, u32 len)
+{
+	dvb_dmx_swfilter(&fc->demux, buf, len);
+}
+EXPORT_SYMBOL(flexcop_pass_dmx_data);
+
+void flexcop_pass_dmx_packets(struct flexcop_device *fc, u8 *buf, u32 no)
+{
+	dvb_dmx_swfilter_packets(&fc->demux, buf, no);
+}
+EXPORT_SYMBOL(flexcop_pass_dmx_packets);
+
+static void flexcop_reset(struct flexcop_device *fc)
+{
+	flexcop_ibi_value v210,v204;
+
+/* reset the flexcop itself */
+	fc->write_ibi_reg(fc,ctrl_208,ibi_zero);
+
+	v210.raw = 0;
+	v210.sw_reset_210.reset_blocks = 0xff;
+	v210.sw_reset_210.Block_reset_enable = 0xb2;
+	fc->write_ibi_reg(fc,sw_reset_210,v210);
+
+/* reset the periphical devices */
+
+	v204 = fc->read_ibi_reg(fc,misc_204);
+	v204.misc_204.Per_reset_sig = 0;
+	fc->write_ibi_reg(fc,misc_204,v204);
+	v204.misc_204.Per_reset_sig = 1;
+	fc->write_ibi_reg(fc,misc_204,v204);
+
+/*	v208.raw = 0;
+	v208.ctrl_208.Null_filter_sig = 1;
+	fc->write_ibi_reg(fc,ctrl_208,v208);*/
+}
+
+struct flexcop_device *flexcop_device_kmalloc(size_t bus_specific_len)
+{
+	void *bus;
+	struct flexcop_device *fc = kmalloc(sizeof(struct flexcop_device), GFP_KERNEL);
+	if (!fc) {
+		err("no memory");
+		return NULL;
+	}
+	memset(fc, 0, sizeof(struct flexcop_device));
+
+	bus = kmalloc(bus_specific_len, GFP_KERNEL);
+	if (!bus) {
+		err("no memory");
+		kfree(fc);
+		return NULL;
+	}
+	memset(bus, 0, bus_specific_len);
+
+	fc->bus_specific = bus;
+
+	return fc;
+}
+EXPORT_SYMBOL(flexcop_device_kmalloc);
+
+void flexcop_device_kfree(struct flexcop_device *fc)
+{
+	kfree(fc->bus_specific);
+	kfree(fc);
+}
+EXPORT_SYMBOL(flexcop_device_kfree);
+
+int flexcop_device_initialize(struct flexcop_device *fc)
+{
+	int ret;
+	ibi_zero.raw = 0;
+
+	flexcop_reset(fc);
+	flexcop_determine_revision(fc);
+	flexcop_sram_init(fc);
+	flexcop_hw_filter_init(fc);
+
+	flexcop_smc_ctrl(fc, 0);
+
+	if (fc->get_mac_addr(fc, 0) == 0) {
+		u8 *b = fc->mac_address;
+		info("MAC address = %02x:%02x:%02x:%02x:%02x:%02x", b[0],b[1],b[2],b[3],b[4],b[5]);
+		flexcop_set_mac_filter(fc,fc->mac_address);
+		flexcop_mac_filter_ctrl(fc,1);
+	} else
+		warn("reading of MAC address failed.\n");
+
+	if ((ret = flexcop_dvb_init(fc)))
+		goto error;
+
+	if ((ret = flexcop_i2c_init(fc)))
+		goto error;
+
+	if ((ret = flexcop_frontend_init(fc)))
+		goto error;
+
+	flexcop_device_name(fc,"initialization of","complete");
+
+	ret = 0;
+	goto success;
+error:
+	flexcop_device_exit(fc);
+success:
+	return ret;
+}
+EXPORT_SYMBOL(flexcop_device_initialize);
+
+void flexcop_device_exit(struct flexcop_device *fc)
+{
+	flexcop_frontend_exit(fc);
+	flexcop_i2c_exit(fc);
+	flexcop_dvb_exit(fc);
+}
+EXPORT_SYMBOL(flexcop_device_exit);
+
+static int flexcop_module_init(void)
+{
+	info(DRIVER_NAME " loaded successfully");
+	return 0;
+}
+
+static void flexcop_module_cleanup(void)
+{
+	info(DRIVER_NAME " unloaded successfully");
+}
+
+module_init(flexcop_module_init);
+module_exit(flexcop_module_cleanup);
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_NAME);
+MODULE_LICENSE("GPL");