diff options
author | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2009-02-23 14:21:10 +0100 |
---|---|---|
committer | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2009-02-24 14:51:29 +0100 |
commit | 154907957f9391b1af997b57507b16c018cc4995 (patch) | |
tree | f9033e7dc29d5406e871b8102ba0b588d34b50ec /drivers/media/dvb/firewire/firedtv-dvb.c | |
parent | a70f81c1c0dac113ac4705e7701e2676e67905cd (diff) |
firedtv: massive refactoring
Combination of the following changes:
Mon, 23 Feb 2009 14:21:10 +0100 (CET)
firedtv: reinstate debug logging option
Henrik Kurelid tells me that FCP debug logging (which I removed during
cleanups) is still useful when working on driver issues together with
end users. So bring it back in an updated form with only 60% of the
original code footprint.
Logging can be enabled with
# echo -1 > /sys/module/firedtv/parameters/debug
1 instead of -1 enables only FCP header logging,
2 instead of -1 enables only hexdumps of the entire FCP frames.
0 switches logging off again.
Fri, 20 Feb 2009 20:54:27 +0100 (CET)
firedtv: build fix for INPUT=m and DVB_FIREDTV=y
Thu, 19 Feb 2009 20:40:39 +0100
firedtv: use msecs_to_jiffies
Pointed out by Mauro Carvalho Chehab.
Sun Feb 15 20:50:46 CET 2009
firedtv: some more housekeeping
Fix an old checkpatch warning and a new compiler warning.
Sun Feb 15 15:33:17 CET 2009
firedtv: rename a file once more
At the moment, about a third of avc.c is specific to FireDTVs rather
than generic AV/C code. Rename it to firedtv-avc.c.
Sun Feb 15 15:33:17 CET 2009
firedtv: dvb demux: more compact channels backing store
Replace struct firedtv_channel { bool active; int pid; } channel[16];
by unsigned long channel_active; u16 channel_pid[16];.
Sun Feb 15 15:33:17 CET 2009
firedtv: dvb demux: some simplifications
c->active was unnecessarily cleared twice.
Also, by marking the channel inactive before the for loop,
the loop becomes identical with fdtv_channel_collect().
Sun Feb 15 15:33:17 CET 2009
firedtv: dvb demux: remove a bogus loop
This loop is unnecessary because
- only active channel[].pid's will be sent to the device,
- when a channel is activated, its pid is set to dvbdmxfeed->pid.
Perhaps the original code was there because it was initially not fully
covered by the fdtv->demux_mutex.
Sun Feb 15 15:33:17 CET 2009
firedtv: dvb demux: fix mutex protection
fdtv_start_feed() accessed the channel list unsafely.
Fully serialize it with itself and fdtv_stop_feed().
Sun Feb 15 15:33:17 CET 2009
firedtv: dvb demux: fix missing braces
Original code was:
...
case DMX_TS_PES_OTHER:
//Dirty fix to keep firesat->channel pid-list up to date
for(k=0;k<16;k++){
if(firesat->channel[k].active == 0)
firesat->channel[k].pid =
dvbdmxfeed->pid;
break;
}
channel = firesat_channel_allocate(firesat);
break;
default:
...
Looks bogus in several respects. For now let's just add braces to the if
because that seems to be what the author meant.
Sun Feb 15 15:33:17 CET 2009
firedtv: allow build without input subsystem
!CONFIG_INPUT is very unlikely on systems on which firedtv is of
interest. But we can easily support it.
Sun Feb 15 15:33:17 CET 2009
firedtv: replace EXTRA_CFLAGS by ccflags
The former are deprecated.
The latter can depend on Kconfig variables.
Sun Feb 15 15:33:17 CET 2009
firedtv: concentrate ieee1394 dependencies
Move the entire interface with drivers/ieee1394 to firedtv-1394.c.
Move 1394-independent module initialization code to firedtv-dvb.c.
This prepares interfacing with drivers/firewire.
Sun Feb 15 15:33:17 CET 2009
firedtv: amend Kconfig menu prompt
Sun Feb 15 15:33:17 CET 2009
firedtv: remove kernel version compatibility macro
Sun Feb 15 15:33:17 CET 2009
firedtv: combine header files
avc.h and firedtv-*.h are small and currently not shared with other
drivers, hence concatenate them all into firedtv.h.
Sun Feb 15 15:33:17 CET 2009
firedtv: misc style touch-ups
Standardize on lower-case hexadecimal constants. Adjust whitespace.
Omit unnecessary pointer type casts and an unnecessary list head
initialization. Use dev_printk.
Wed Feb 11 21:21:04 CET 2009
firedtv: avc, ci: remove unused constants
Wed Feb 11 21:21:04 CET 2009
firedtv: avc: remove bitfields from read descriptor response operands
Don't use bitfields in struct types of on-the-wire data.
Wed Feb 11 21:21:04 CET 2009
firedtv: avc: remove bitfields from DSD command operands
Don't use bitfields in struct types of on-the-wire data.
Wed Feb 11 21:21:04 CET 2009
firedtv: avc: header file cleanup
Remove unused constants and declarations.
Move privately used constants into .c files.
Wed Feb 11 21:21:04 CET 2009
firedtv: avc: remove bitfields from FCP frame types
Don't use bitfields in struct types of on-the-wire data.
Also move many privately used constants from avc.h to avc.c
and remove some unused constants.
Sun, 18 Jan 2009 16:30:00 +0100 (CET)
firedtv: avc: fix offset in avc_tuner_get_ts
The parentheses were wrong. It didn't matter though because this code
only writes a 0 into an area which is already initialized to 0.
Sun, 18 Jan 2009 16:30:00 +0100 (CET)
firedtv: avc: reduce stack usage, remove two typedefs
It is safe to share a memory buffer for command frame and response frame
because the response data come in after the command frame was last used.
Even less stack would be required if only the actual required frame size
instead of the entire FCP register size was allocated.
Also, rename the defined types AVCCmdFrm and AVCRspFrm to
struct avc_command_frame and struct avc_response_frame.
TODO: Remove the bitfields in these types.
Sun, 18 Jan 2009 16:30:00 +0100 (CET)
firedtv: cmp: move code to avc
Sun, 18 Jan 2009 16:30:00 +0100 (CET)
firedtv: iso: move code to firedtv-1394
Sun, 18 Jan 2009 16:30:00 +0100 (CET)
firedtv: iso: remove unnecessary struct type definitions
Sun, 18 Jan 2009 16:30:00 +0100 (CET)
firedtv: iso: style changes and fixlets
Add cleanup after failure in setup_iso_channel.
Replace printk() by dv_err().
Decrease indentation level in rawiso_activity_cb().
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Diffstat (limited to 'drivers/media/dvb/firewire/firedtv-dvb.c')
-rw-r--r-- | drivers/media/dvb/firewire/firedtv-dvb.c | 328 |
1 files changed, 208 insertions, 120 deletions
diff --git a/drivers/media/dvb/firewire/firedtv-dvb.c b/drivers/media/dvb/firewire/firedtv-dvb.c index 1823058696f..9d308dd32a5 100644 --- a/drivers/media/dvb/firewire/firedtv-dvb.c +++ b/drivers/media/dvb/firewire/firedtv-dvb.c @@ -10,75 +10,55 @@ * the License, or (at your option) any later version. */ +#include <linux/bitops.h> +#include <linux/device.h> #include <linux/errno.h> #include <linux/kernel.h> +#include <linux/mod_devicetable.h> +#include <linux/module.h> #include <linux/mutex.h> +#include <linux/slab.h> +#include <linux/string.h> #include <linux/types.h> +#include <linux/wait.h> +#include <linux/workqueue.h> +#include <dmxdev.h> #include <dvb_demux.h> -#include <dvb_frontend.h> #include <dvbdev.h> +#include <dvb_frontend.h> -#include "avc.h" #include "firedtv.h" -#include "firedtv-ci.h" - -DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr); -static struct firedtv_channel *fdtv_channel_allocate(struct firedtv *fdtv) +static int alloc_channel(struct firedtv *fdtv) { - struct firedtv_channel *c = NULL; - int k; + int i; - if (mutex_lock_interruptible(&fdtv->demux_mutex)) - return NULL; - - for (k = 0; k < 16; k++) - if (!fdtv->channel[k].active) { - fdtv->channel[k].active = true; - c = &fdtv->channel[k]; + for (i = 0; i < 16; i++) + if (!__test_and_set_bit(i, &fdtv->channel_active)) break; - } - - mutex_unlock(&fdtv->demux_mutex); - return c; + return i; } -static int fdtv_channel_collect(struct firedtv *fdtv, int *pidc, u16 pid[]) +static void collect_channels(struct firedtv *fdtv, int *pidc, u16 pid[]) { - int k, l = 0; - - if (mutex_lock_interruptible(&fdtv->demux_mutex)) - return -EINTR; - - for (k = 0; k < 16; k++) - if (fdtv->channel[k].active) - pid[l++] = fdtv->channel[k].pid; - - mutex_unlock(&fdtv->demux_mutex); + int i, n; - *pidc = l; - - return 0; + for (i = 0, n = 0; i < 16; i++) + if (test_bit(i, &fdtv->channel_active)) + pid[n++] = fdtv->channel_pid[i]; + *pidc = n; } -static int fdtv_channel_release(struct firedtv *fdtv, - struct firedtv_channel *channel) +static inline void dealloc_channel(struct firedtv *fdtv, int i) { - if (mutex_lock_interruptible(&fdtv->demux_mutex)) - return -EINTR; - - channel->active = false; - - mutex_unlock(&fdtv->demux_mutex); - return 0; + __clear_bit(i, &fdtv->channel_active); } int fdtv_start_feed(struct dvb_demux_feed *dvbdmxfeed) { - struct firedtv *fdtv = (struct firedtv*)dvbdmxfeed->demux->priv; - struct firedtv_channel *channel; - int pidc,k; + struct firedtv *fdtv = dvbdmxfeed->demux->priv; + int pidc, c, ret; u16 pids[16]; switch (dvbdmxfeed->type) { @@ -86,11 +66,14 @@ int fdtv_start_feed(struct dvb_demux_feed *dvbdmxfeed) case DMX_TYPE_SEC: break; default: - printk(KERN_ERR "%s: invalid type %u\n", - __func__, dvbdmxfeed->type); + dev_err(fdtv->device, "can't start dmx feed: invalid type %u\n", + dvbdmxfeed->type); return -EINVAL; } + if (mutex_lock_interruptible(&fdtv->demux_mutex)) + return -EINTR; + if (dvbdmxfeed->type == DMX_TYPE_TS) { switch (dvbdmxfeed->pes_type) { case DMX_TS_PES_VIDEO: @@ -98,75 +81,64 @@ int fdtv_start_feed(struct dvb_demux_feed *dvbdmxfeed) case DMX_TS_PES_TELETEXT: case DMX_TS_PES_PCR: case DMX_TS_PES_OTHER: - //Dirty fix to keep fdtv->channel pid-list up to date - for(k=0;k<16;k++){ - if (!fdtv->channel[k].active) - fdtv->channel[k].pid = - dvbdmxfeed->pid; - break; - } - channel = fdtv_channel_allocate(fdtv); + c = alloc_channel(fdtv); break; default: - printk(KERN_ERR "%s: invalid pes type %u\n", - __func__, dvbdmxfeed->pes_type); - return -EINVAL; + dev_err(fdtv->device, + "can't start dmx feed: invalid pes type %u\n", + dvbdmxfeed->pes_type); + ret = -EINVAL; + goto out; } } else { - channel = fdtv_channel_allocate(fdtv); + c = alloc_channel(fdtv); } - if (!channel) { - printk(KERN_ERR "%s: busy!\n", __func__); - return -EBUSY; + if (c > 15) { + dev_err(fdtv->device, "can't start dmx feed: busy\n"); + ret = -EBUSY; + goto out; } - dvbdmxfeed->priv = channel; - channel->pid = dvbdmxfeed->pid; - - if (fdtv_channel_collect(fdtv, &pidc, pids)) { - fdtv_channel_release(fdtv, channel); - printk(KERN_ERR "%s: could not collect pids!\n", __func__); - return -EINTR; - } + dvbdmxfeed->priv = (typeof(dvbdmxfeed->priv))(unsigned long)c; + fdtv->channel_pid[c] = dvbdmxfeed->pid; + collect_channels(fdtv, &pidc, pids); if (dvbdmxfeed->pid == 8192) { - k = avc_tuner_get_ts(fdtv); - if (k) { - fdtv_channel_release(fdtv, channel); - printk("%s: AVCTuner_GetTS failed with error %d\n", - __func__, k); - return k; + ret = avc_tuner_get_ts(fdtv); + if (ret) { + dealloc_channel(fdtv, c); + dev_err(fdtv->device, "can't get TS\n"); + goto out; } } else { - k = avc_tuner_set_pids(fdtv, pidc, pids); - if (k) { - fdtv_channel_release(fdtv, channel); - printk("%s: AVCTuner_SetPIDs failed with error %d\n", - __func__, k); - return k; + ret = avc_tuner_set_pids(fdtv, pidc, pids); + if (ret) { + dealloc_channel(fdtv, c); + dev_err(fdtv->device, "can't set PIDs\n"); + goto out; } } +out: + mutex_unlock(&fdtv->demux_mutex); - return 0; + return ret; } int fdtv_stop_feed(struct dvb_demux_feed *dvbdmxfeed) { struct dvb_demux *demux = dvbdmxfeed->demux; - struct firedtv *fdtv = (struct firedtv*)demux->priv; - struct firedtv_channel *c = dvbdmxfeed->priv; - int k, l; + struct firedtv *fdtv = demux->priv; + int pidc, c, ret; u16 pids[16]; - if (dvbdmxfeed->type == DMX_TYPE_TS && !((dvbdmxfeed->ts_type & TS_PACKET) && - (demux->dmx.frontend->source != DMX_MEMORY_FE))) { + if (dvbdmxfeed->type == DMX_TYPE_TS && + !((dvbdmxfeed->ts_type & TS_PACKET) && + (demux->dmx.frontend->source != DMX_MEMORY_FE))) { if (dvbdmxfeed->ts_type & TS_DECODER) { - if (dvbdmxfeed->pes_type >= DMX_TS_PES_OTHER || - !demux->pesfilter[dvbdmxfeed->pes_type]) - + !demux->pesfilter[dvbdmxfeed->pes_type]) return -EINVAL; demux->pids[dvbdmxfeed->pes_type] |= 0x8000; @@ -174,38 +146,32 @@ int fdtv_stop_feed(struct dvb_demux_feed *dvbdmxfeed) } if (!(dvbdmxfeed->ts_type & TS_DECODER && - dvbdmxfeed->pes_type < DMX_TS_PES_OTHER)) - + dvbdmxfeed->pes_type < DMX_TS_PES_OTHER)) return 0; } if (mutex_lock_interruptible(&fdtv->demux_mutex)) return -EINTR; - /* list except channel to be removed */ - for (k = 0, l = 0; k < 16; k++) - if (fdtv->channel[k].active) { - if (&fdtv->channel[k] != c) - pids[l++] = fdtv->channel[k].pid; - else - fdtv->channel[k].active = false; - } + c = (unsigned long)dvbdmxfeed->priv; + dealloc_channel(fdtv, c); + collect_channels(fdtv, &pidc, pids); - k = avc_tuner_set_pids(fdtv, l, pids); - if (!k) - c->active = false; + ret = avc_tuner_set_pids(fdtv, pidc, pids); mutex_unlock(&fdtv->demux_mutex); - return k; + + return ret; } -int fdtv_dvbdev_init(struct firedtv *fdtv, struct device *dev) +DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr); + +int fdtv_dvb_register(struct firedtv *fdtv) { int err; - err = DVB_REGISTER_ADAPTER(&fdtv->adapter, - fdtv_model_names[fdtv->type], - THIS_MODULE, dev, adapter_nr); + err = dvb_register_adapter(&fdtv->adapter, fdtv_model_names[fdtv->type], + THIS_MODULE, fdtv->device, adapter_nr); if (err < 0) goto fail_log; @@ -223,9 +189,9 @@ int fdtv_dvbdev_init(struct firedtv *fdtv, struct device *dev) if (err) goto fail_unreg_adapter; - fdtv->dmxdev.filternum = 16; - fdtv->dmxdev.demux = &fdtv->demux.dmx; - fdtv->dmxdev.capabilities = 0; + fdtv->dmxdev.filternum = 16; + fdtv->dmxdev.demux = &fdtv->demux.dmx; + fdtv->dmxdev.capabilities = 0; err = dvb_dmxdev_init(&fdtv->dmxdev, &fdtv->adapter); if (err) @@ -233,13 +199,12 @@ int fdtv_dvbdev_init(struct firedtv *fdtv, struct device *dev) fdtv->frontend.source = DMX_FRONTEND_0; - err = fdtv->demux.dmx.add_frontend(&fdtv->demux.dmx, - &fdtv->frontend); + err = fdtv->demux.dmx.add_frontend(&fdtv->demux.dmx, &fdtv->frontend); if (err) goto fail_dmxdev_release; err = fdtv->demux.dmx.connect_frontend(&fdtv->demux.dmx, - &fdtv->frontend); + &fdtv->frontend); if (err) goto fail_rem_frontend; @@ -252,16 +217,15 @@ int fdtv_dvbdev_init(struct firedtv *fdtv, struct device *dev) err = fdtv_ca_register(fdtv); if (err) - dev_info(dev, "Conditional Access Module not enabled\n"); - + dev_info(fdtv->device, + "Conditional Access Module not enabled\n"); return 0; fail_net_release: dvb_net_release(&fdtv->dvbnet); fdtv->demux.dmx.close(&fdtv->demux.dmx); fail_rem_frontend: - fdtv->demux.dmx.remove_frontend(&fdtv->demux.dmx, - &fdtv->frontend); + fdtv->demux.dmx.remove_frontend(&fdtv->demux.dmx, &fdtv->frontend); fail_dmxdev_release: dvb_dmxdev_release(&fdtv->dmxdev); fail_dmx_release: @@ -269,8 +233,132 @@ fail_dmx_release: fail_unreg_adapter: dvb_unregister_adapter(&fdtv->adapter); fail_log: - dev_err(dev, "DVB initialization failed\n"); + dev_err(fdtv->device, "DVB initialization failed\n"); return err; } +void fdtv_dvb_unregister(struct firedtv *fdtv) +{ + fdtv_ca_release(fdtv); + dvb_unregister_frontend(&fdtv->fe); + dvb_net_release(&fdtv->dvbnet); + fdtv->demux.dmx.close(&fdtv->demux.dmx); + fdtv->demux.dmx.remove_frontend(&fdtv->demux.dmx, &fdtv->frontend); + dvb_dmxdev_release(&fdtv->dmxdev); + dvb_dmx_release(&fdtv->demux); + dvb_unregister_adapter(&fdtv->adapter); +} + +const char *fdtv_model_names[] = { + [FIREDTV_UNKNOWN] = "unknown type", + [FIREDTV_DVB_S] = "FireDTV S/CI", + [FIREDTV_DVB_C] = "FireDTV C/CI", + [FIREDTV_DVB_T] = "FireDTV T/CI", + [FIREDTV_DVB_S2] = "FireDTV S2 ", +}; + +struct firedtv *fdtv_alloc(struct device *dev, + const struct firedtv_backend *backend, + const char *name, size_t name_len) +{ + struct firedtv *fdtv; + int i; + + fdtv = kzalloc(sizeof(*fdtv), GFP_KERNEL); + if (!fdtv) + return NULL; + + dev->driver_data = fdtv; + fdtv->device = dev; + fdtv->isochannel = -1; + fdtv->voltage = 0xff; + fdtv->tone = 0xff; + fdtv->backend = backend; + + mutex_init(&fdtv->avc_mutex); + init_waitqueue_head(&fdtv->avc_wait); + fdtv->avc_reply_received = true; + mutex_init(&fdtv->demux_mutex); + INIT_WORK(&fdtv->remote_ctrl_work, avc_remote_ctrl_work); + + for (i = ARRAY_SIZE(fdtv_model_names); --i; ) + if (strlen(fdtv_model_names[i]) <= name_len && + strncmp(name, fdtv_model_names[i], name_len) == 0) + break; + fdtv->type = i; + + return fdtv; +} + +#define MATCH_FLAGS (IEEE1394_MATCH_VENDOR_ID | IEEE1394_MATCH_MODEL_ID | \ + IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION) + +#define DIGITAL_EVERYWHERE_OUI 0x001287 +#define AVC_UNIT_SPEC_ID_ENTRY 0x00a02d +#define AVC_SW_VERSION_ENTRY 0x010001 + +static struct ieee1394_device_id fdtv_id_table[] = { + { + /* FloppyDTV S/CI and FloppyDTV S2 */ + .match_flags = MATCH_FLAGS, + .vendor_id = DIGITAL_EVERYWHERE_OUI, + .model_id = 0x000024, + .specifier_id = AVC_UNIT_SPEC_ID_ENTRY, + .version = AVC_SW_VERSION_ENTRY, + }, { + /* FloppyDTV T/CI */ + .match_flags = MATCH_FLAGS, + .vendor_id = DIGITAL_EVERYWHERE_OUI, + .model_id = 0x000025, + .specifier_id = AVC_UNIT_SPEC_ID_ENTRY, + .version = AVC_SW_VERSION_ENTRY, + }, { + /* FloppyDTV C/CI */ + .match_flags = MATCH_FLAGS, + .vendor_id = DIGITAL_EVERYWHERE_OUI, + .model_id = 0x000026, + .specifier_id = AVC_UNIT_SPEC_ID_ENTRY, + .version = AVC_SW_VERSION_ENTRY, + }, { + /* FireDTV S/CI and FloppyDTV S2 */ + .match_flags = MATCH_FLAGS, + .vendor_id = DIGITAL_EVERYWHERE_OUI, + .model_id = 0x000034, + .specifier_id = AVC_UNIT_SPEC_ID_ENTRY, + .version = AVC_SW_VERSION_ENTRY, + }, { + /* FireDTV T/CI */ + .match_flags = MATCH_FLAGS, + .vendor_id = DIGITAL_EVERYWHERE_OUI, + .model_id = 0x000035, + .specifier_id = AVC_UNIT_SPEC_ID_ENTRY, + .version = AVC_SW_VERSION_ENTRY, + }, { + /* FireDTV C/CI */ + .match_flags = MATCH_FLAGS, + .vendor_id = DIGITAL_EVERYWHERE_OUI, + .model_id = 0x000036, + .specifier_id = AVC_UNIT_SPEC_ID_ENTRY, + .version = AVC_SW_VERSION_ENTRY, + }, {} +}; +MODULE_DEVICE_TABLE(ieee1394, fdtv_id_table); + +static int __init fdtv_init(void) +{ + return fdtv_1394_init(fdtv_id_table); +} + +static void __exit fdtv_exit(void) +{ + fdtv_1394_exit(); +} + +module_init(fdtv_init); +module_exit(fdtv_exit); +MODULE_AUTHOR("Andreas Monitzer <andy@monitzer.com>"); +MODULE_AUTHOR("Ben Backx <ben@bbackx.com>"); +MODULE_DESCRIPTION("FireDTV DVB Driver"); +MODULE_LICENSE("GPL"); +MODULE_SUPPORTED_DEVICE("FireDTV DVB"); |