diff options
author | Heiner Kallweit <hkallweit1@gmail.com> | 2015-11-16 19:52:08 (GMT) |
---|---|---|
committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2015-11-19 13:37:40 (GMT) |
commit | 9f0bf366d70beaae64975dcb89272ea6d6fc4a03 (patch) | |
tree | a6278b382dbf642c827256950eb029f7cc984d3b /drivers/media/rc/rc-main.c | |
parent | 93cffffc18f6894f90ae03552e8a228eb402347c (diff) | |
download | linux-9f0bf366d70beaae64975dcb89272ea6d6fc4a03.tar.xz |
[media] media: rc: preparation for on-demand decoder module loading
Prepare on-demand decoder module loading by adding a module_name member
to struct proto_names and introducing the related load function.
After this patch of the series the decoder modules are still loaded
unconditionally.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers/media/rc/rc-main.c')
-rw-r--r-- | drivers/media/rc/rc-main.c | 72 |
1 files changed, 59 insertions, 13 deletions
diff --git a/drivers/media/rc/rc-main.c b/drivers/media/rc/rc-main.c index 784be5e..ba5df4b 100644 --- a/drivers/media/rc/rc-main.c +++ b/drivers/media/rc/rc-main.c @@ -780,27 +780,28 @@ static struct class rc_class = { static struct { u64 type; char *name; + const char *module_name; } proto_names[] = { - { RC_BIT_NONE, "none" }, - { RC_BIT_OTHER, "other" }, - { RC_BIT_UNKNOWN, "unknown" }, + { RC_BIT_NONE, "none", NULL }, + { RC_BIT_OTHER, "other", NULL }, + { RC_BIT_UNKNOWN, "unknown", NULL }, { RC_BIT_RC5 | - RC_BIT_RC5X, "rc-5" }, - { RC_BIT_NEC, "nec" }, + RC_BIT_RC5X, "rc-5", "ir-rc5-decoder" }, + { RC_BIT_NEC, "nec", "ir-nec-decoder" }, { RC_BIT_RC6_0 | RC_BIT_RC6_6A_20 | RC_BIT_RC6_6A_24 | RC_BIT_RC6_6A_32 | - RC_BIT_RC6_MCE, "rc-6" }, - { RC_BIT_JVC, "jvc" }, + RC_BIT_RC6_MCE, "rc-6", "ir-rc6-decoder" }, + { RC_BIT_JVC, "jvc", "ir-jvc-decoder" }, { RC_BIT_SONY12 | RC_BIT_SONY15 | - RC_BIT_SONY20, "sony" }, - { RC_BIT_RC5_SZ, "rc-5-sz" }, - { RC_BIT_SANYO, "sanyo" }, - { RC_BIT_SHARP, "sharp" }, - { RC_BIT_MCE_KBD, "mce_kbd" }, - { RC_BIT_XMP, "xmp" }, + RC_BIT_SONY20, "sony", "ir-sony-decoder" }, + { RC_BIT_RC5_SZ, "rc-5-sz", "ir-rc5-decoder" }, + { RC_BIT_SANYO, "sanyo", "ir-sanyo-decoder" }, + { RC_BIT_SHARP, "sharp", "ir-sharp-decoder" }, + { RC_BIT_MCE_KBD, "mce_kbd", "ir-mce_kbd-decoder" }, + { RC_BIT_XMP, "xmp", "ir-xmp-decoder" }, }; /** @@ -979,6 +980,48 @@ static int parse_protocol_change(u64 *protocols, const char *buf) return count; } +static void ir_raw_load_modules(u64 *protocols) + +{ + u64 available; + int i, ret; + + for (i = 0; i < ARRAY_SIZE(proto_names); i++) { + if (proto_names[i].type == RC_BIT_NONE || + proto_names[i].type & (RC_BIT_OTHER | RC_BIT_UNKNOWN)) + continue; + + available = ir_raw_get_allowed_protocols(); + if (!(*protocols & proto_names[i].type & ~available)) + continue; + + if (!proto_names[i].module_name) { + pr_err("Can't enable IR protocol %s\n", + proto_names[i].name); + *protocols &= ~proto_names[i].type; + continue; + } + + ret = request_module("%s", proto_names[i].module_name); + if (ret < 0) { + pr_err("Couldn't load IR protocol module %s\n", + proto_names[i].module_name); + *protocols &= ~proto_names[i].type; + continue; + } + msleep(20); + available = ir_raw_get_allowed_protocols(); + if (!(*protocols & proto_names[i].type & ~available)) + continue; + + pr_err("Loaded IR protocol module %s, \ + but protocol %s still not available\n", + proto_names[i].module_name, + proto_names[i].name); + *protocols &= ~proto_names[i].type; + } +} + /** * store_protocols() - changes the current/wakeup IR protocol(s) * @device: the device descriptor @@ -1045,6 +1088,9 @@ static ssize_t store_protocols(struct device *device, goto out; } + if (dev->driver_type == RC_DRIVER_IR_RAW) + ir_raw_load_modules(&new_protocols); + if (new_protocols != old_protocols) { *current_protocols = new_protocols; IR_dprintk(1, "Protocols changed to 0x%llx\n", |