link = card-&dai_link[i]; link->codec_name link->codec_of_node link->codec_dai_name link->platform_name link->cpu_of_node可以在 snd_soc_register_card 里 print dai_link 的內容檢查。
static struct platform_driver imx_wm8962_driver = {
.driver = {
.name = "imx-wm8962",
.owner = THIS_MODULE,
.pm = &snd_soc_pm_ops,
.of_match_table = imx_wm8962_dt_ids,
},
.probe = imx_wm8962_probe,
.remove = imx_wm8962_remove,
};
module_platform_driver(imx_wm8962_driver);
#define module_platform_driver(__platform_driver) \
module_driver(__platform_driver, platform_driver_register, \
platform_driver_unregister)
所以
module_driver(imx_wm8962_driver, platform_driver_register, platform_driver_unregister)
#define module_driver(__driver, __register, __unregister, ...) \
static int __init __driver##_init(void) \
{ \
return __register(&(__driver) , ##__VA_ARGS__); \
} \
module_init(__driver##_init); \
static void __exit __driver##_exit(void) \
{ \
__unregister(&(__driver) , ##__VA_ARGS__); \
} \
module_exit(__driver##_exit);
所以..
static int __init imx_wm8962_driver_init(void)
{
return platform_driver_register( &(imx_wm8962_driver) );
}
module_init(imx_wm8962_driver_init)'
static void __exit imx_wm8962_driver_exit(void)
{
platform_driver_unregister(&(imx_wm8962_driver));
}
module_exit(imx_wm8962_exit);
#define module_init(x) __initcall(x);
#define module_exit(x) __exitcall(x);
然後
#define __initcall(fn) device_initcall(fn)
#define __exitcall(fn) \
static exitcall_t __exitcall_##fn __exit_call = fn
int platform_driver_register(struct platform_driver *drv)
{
printk("%s -- %pS\n",__func__,__builtin_return_address(0));
drv->driver.bus = &platform_bus_type;
if (drv->probe)
drv->driver.probe = platform_drv_probe;
if (drv->remove)
drv->driver.remove = platform_drv_remove;
if (drv->shutdown)
drv->driver.shutdown = platform_drv_shutdown;
return driver_register(&drv->driver);
}
他把 依照宣告的 platform_driver 變數內容，設定好 driver.driver 的資料，call driver_register( )bus: 'platform': driver_probe_device: matched device sound-wm8962.33 with driver imx-wm8962
do_one_initcall imx_wm8962_driver_init platform_driver_register bus_add_driver ...
static char *initcall_level_names[] __initdata = {
"early",
"core",
"postcore",
"arch",
"subsys",
"fs",
"device",
"late",
};
#define __define_initcall(fn, id) \
static initcall_t __initcall_##fn##id __used \
__attribute__((__section__(".initcall" #id ".init"))) = fn
/*
* Early initcalls run before initializing SMP.
*
* Only for built-in code, not modules.
*/
#define early_initcall(fn) __define_initcall(fn, early)
/*
* A "pure" initcall has no dependencies on anything else, and purely
* initializes variables that couldn't be statically initialized.
*
* This only exists for built-in code, not for modules.
* Keep main.c:initcall_level_names[] in sync.
*/
#define pure_initcall(fn) __define_initcall(fn, 0)
#define core_initcall(fn) __define_initcall(fn, 1)
#define core_initcall_sync(fn) __define_initcall(fn, 1s)
#define postcore_initcall(fn) __define_initcall(fn, 2)
#define postcore_initcall_sync(fn) __define_initcall(fn, 2s)
#define arch_initcall(fn) __define_initcall(fn, 3)
#define arch_initcall_sync(fn) __define_initcall(fn, 3s)
#define subsys_initcall(fn) __define_initcall(fn, 4)
#define subsys_initcall_sync(fn) __define_initcall(fn, 4s)
#define fs_initcall(fn) __define_initcall(fn, 5)
#define fs_initcall_sync(fn) __define_initcall(fn, 5s)
#define rootfs_initcall(fn) __define_initcall(fn, rootfs)
#define device_initcall(fn) __define_initcall(fn, 6)
#define device_initcall_sync(fn) __define_initcall(fn, 6s)
#define late_initcall(fn) __define_initcall(fn, 7)
#define late_initcall_sync(fn) __define_initcall(fn, 7s)
#define __initcall(fn) device_initcall(fn)
static int __init init_soundcore(void)
{
int rc;
rc = init_oss_soundcore();
if (rc)
return rc;
sound_class = class_create(THIS_MODULE, "sound");
if (IS_ERR(sound_class)) {
cleanup_oss_soundcore();
return PTR_ERR(sound_class);
}
sound_class->devnode = sound_devnode;
return 0;
}
static void __exit cleanup_soundcore(void)
{
cleanup_oss_soundcore();
class_destroy(sound_class);
}
subsys_initcall(init_soundcore);
module_exit(cleanup_soundcore);
就可以，-- -r wheezy否則 default 版本是跟 host 一樣。(現在是 jessie)
pi@raspberrypi:~ $ sudo lxc-checkconfig --- Namespaces --- Namespaces: enabled Utsname namespace: enabled Ipc namespace: enabled Pid namespace: enabled User namespace: missing Network namespace: enabled Multiple /dev/pts instances: enabled --- Control groups --- Cgroup: enabled Cgroup clone_children flag: enabled Cgroup device: enabled Cgroup sched: enabled Cgroup cpu account: enabled Cgroup memory controller: missing --- Misc --- Veth pair device: enabled Macvlan: enabled Vlan: enabled File capabilities: enabled Note : Before booting a new kernel, you can check its configuration usage : CONFIG=/path/to/config /usr/bin/lxc-checkconfig
Cannot check Release signature; keyring file not available /usr/share/keyrings/debian-archive-keyring.pgp
E: Couldn't download packages: cpio dash debconf debconf-i18n debianutils dialog diffutils dmsetup dpkg e2fslibs e2fsprogs findutils gcc-4.6-base gcc-4.7-base gcc-4.8-base gcc-4.9-base gnupg gpgv grep gzip hostname ifupdown init init-system-helpers initramfs-tools initscripts insserv iproute iproute2 isc-dhcp-client isc-dhcp-common klibc-utils kmod libacl1 libapt-pkg4.12 libattr1 libaudit-common libaudit1 libblkid1 libbsd0 libbz2-1.0 libc-bin libc6 libcap2 libcap2-bin libcomerr2 libcryptsetup4 libdb5.3 libdbus-1-3 libdebconfclient0 libdevmapper1.02.1 libdns-export100 libdrm2 libedit2 libgcc1 libgcrypt20
W: Failure trying to run: chroot /var/cache/lxc/debian/partial-jessie-armhf mount -t proc proc /proc W: See /var/cache/lxc/debian/partial-jessie-armhf/debootstrap/debootstrap.log for details Failed to download the rootfs, aborting. Failed to download 'debian base' failed to install debian lxc_container: container creation template for debian8 failed去 /var/cache/lxc/debian/下是空的。
pi@raspberrypi:~ $ sudo mkdir -p /var/lxc/guests/tt2 pi@raspberrypi:~ $ sudo http_proxy="http://myproxy:3128" debootstrap jessie /var/lxc/guests/tt2/fs/ http://archive.raspbian.org/raspbian
pi@raspberrypi:~ $ sudo chroot /var/lxc/guests/tt2/fs/ root@raspberrypi:/# passwd Enter new UNIX password: Retype new UNIX password: passwd: password updated successfully root@raspberrypi:/# exit
pi@raspberrypi:~ $ sudo vi /var/lxc/guests/tt2/config內容是..
lxc.utsname = tt2 lxc.tty = 2 lxc.rootfs = /var/lxc/guests/tt2/fs
pi@raspberrypi:~ $ sudo lxc-create -f /var/lxc/guests/tt2/config -n tt2
pi@raspberrypi:~ $ sudo lxc-start -n tt2 systemd 215 running in system mode. (+PAM +AUDIT +SELINUX +IMA +SYSVINIT +LIBCRYPTSETUP +GCRYPT +ACL +XZ -SECCOMP -APPARMOR) Detected virtualization 'lxc'. Detected architecture 'arm'. Welcome to Raspbian GNU/Linux 8 (jessie)! Set hostname to. Cannot add dependency job for unit dbus.socket, ignoring: Unit dbus.socket failed to load: No such file or directory. Cannot add dependency job for unit display-manager.service, ignoring: Unit display-manager.service failed to load: No such file or directory. [ OK ] Reached target Remote File Systems (Pre). .... .... [ OK ] Started Update UTMP about System Runlevel Changes. Raspbian GNU/Linux 8 raspberrypi console raspberrypi login: root Password: Linux raspberrypi 4.4.11+ #888 Mon May 23 20:02:58 BST 2016 armv6l The programs included with the Debian GNU/Linux system are free software; the exact distribution terms for each program are described in the individual files in /usr/share/doc/*/copyright. Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent permitted by applicable law. root@raspberrypi:~#
$sudo ./pifm my.wav 100.0 48000 stereo
snd_pcm_open_substream -- EXIT snd_pcm_open -- EXIT snd_pcm_playback_open -- EXIT snd_pcm_hw_refine -- snd_pcm_hw_params+0x74/0x374: subdevice #0 snd_pcm_hw_refine -- snd_pcm_hw_param_first+0xf4/0x1c0: subdevice #0 snd_pcm_hw_refine -- snd_pcm_hw_param_first+0xf4/0x1c0: subdevice #0 imx_cs42888_surround_hw_params -- soc_pcm_hw_params+0x13c/0x464 fsl_esai_set_dai_sysclk -- snd_soc_dai_set_sysclk+0x38/0x7c, dir:1 f:24576000 fsl_esai_set_dai_tdm_slot -- snd_soc_dai_set_tdm_slot+0x30/0x40, slot_width:16, slots:2 fsl_esai_hw_params -- soc_pcm_hw_params+0x194/0x464 : bclk:1536000, p_rat:48000, slot_w:16, slots:2 fsl_esai_set_bclk -- soc_pcm_hw_params+0x194/0x464, tx, 1536000 Playing sample: 2 ch, 48000 hz, 16 bit..
snd_pcm_open_substream -- EXIT snd_pcm_open -- EXIT snd_pcm_hw_refine -- snd_pcm_hw_params+0x74/0x374: subdevice #0 snd_pcm_hw_refine -- snd_pcm_hw_param_first+0xf4/0x1c0: subdevice #0 snd_pcm_hw_refine -- snd_pcm_hw_param_first+0xf4/0x1c0: subdevice #0 imx_cs42888_surround_hw_params -- soc_pcm_hw_params+0x13c/0x464 fsl_esai_set_dai_sysclk -- snd_soc_dai_set_sysclk+0x38/0x7c, dir:1 f:24576000 fsl_esai_set_dai_tdm_slot -- snd_soc_dai_set_tdm_slot+0x30/0x40, slot_width:16, slots:2 fsl_esai_hw_params -- soc_pcm_hw_params+0x194/0x464 : bclk:1536000, p_rat:48000, slot_w:16, slots:2 fsl_esai_set_bclk -- soc_pcm_hw_params+0x194/0x464, rx, 1536000 Capturing sample: 2 ch, 48000 hz, 16 bit
.. the transmitter and receiver sections may use common clock and synchronization signals (synchronous operation mode), or they may have their own seperate clock and sync signals (asynchronous operation mode)..所以 TX, RX 可以共用 CLK, FS, 並不是一定要分開。
The SYN bit in ESAI_SAICR register selects synchronous or asynchronous operation..
/**
* fsl_esai: ESAI private data
* ....
* ....
* @synchronous: if using tx/rx synchronous mode
*/
struct fsl_esai {
...
bool synchronous;
char name[32];
};
driver private data 有一個item 紀錄是synchronous
static int fsl_esai_probe(struct platform_device *pdev)
{
....
esai_priv->synchronous =
of_property_read_bool(np, "fsl,esai-synchronous");
....
- fsl,esai-synchronous: This is a boolean property. If present, indicating
that ESAI would work in the synchronous mode, which means all the settings
for Receiving would be duplicated from Transmition related registers.
Example:
esai: esai@02024000 {
compatible = "fsl,imx35-esai";
reg = <0x02024000 0x4000>;
interrupts = <0 51 0x04>;
clocks = <&clks 208>, <&clks 118>, <&clks 208>;
clock-names = "core", "extal", "fsys";
dmas = <&sdma 23 21 0>, <&sdma 24 21 0>;
dma-names = "rx", "tx";
fsl,fifo-depth = <128>;
fsl,esai-synchronous;
status = "disabled";
};
iceweasel (45.0esr-1) unstable; urgency=medium
* The iceweasel package was replaced with the firefox-esr package.
* Preferences under /etc/iceweasel/prefs will need to be copied manually
to /etc/firefox-esr.
* Other customizations under /etc/iceweasel will need additional manual
steps, through CCK2 or addons.
-- Mike Hommey Mon, 7 Mar 2016 07:45:02 +0900
firefox 的 license 改了？