something_i_am_sure
This commit is contained in:
File diff suppressed because it is too large
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@@ -0,0 +1 @@
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||||
savedcmd_Module.symvers := /usr/lib/modules/7.2.9-zen1-1-zen/build/scripts/mod/modpost -M -a -N -o Module.symvers -n -T modules.order -i /usr/lib/modules/7.2.9-zen1-1-zen/build/Module.symvers -e
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||||
@@ -0,0 +1 @@
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||||
savedcmd_main.ko := ld -r -m elf_x86_64 -z noexecstack --no-warn-rwx-segments --build-id=sha1 -T /usr/lib/modules/7.2.9-zen1-1-zen/build/scripts/module.lds -o main.ko main.o main.mod.o .module-common.o
|
||||
@@ -0,0 +1 @@
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||||
savedcmd_main.mod := printf '%s\n' main.o | awk '!x[$$0]++ { print("./"$$0) }' > main.mod
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File diff suppressed because it is too large
Load Diff
+1274
File diff suppressed because it is too large
Load Diff
Binary file not shown.
@@ -0,0 +1 @@
|
||||
savedcmd_modules.order := { echo main.o; :; } > modules.order
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||||
@@ -0,0 +1,9 @@
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||||
obj-m += main.o
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||||
|
||||
KDIR ?= /lib/modules/$(shell uname -r)/build
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||||
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||||
all:
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||||
$(MAKE) -C $(KDIR) M=$(PWD) modules
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||||
|
||||
clean:
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||||
$(MAKE) -C $(KDIR) M=$(PWD) clean
|
||||
@@ -0,0 +1,404 @@
|
||||
[
|
||||
{
|
||||
"file": "main.c",
|
||||
"arguments": [
|
||||
"/usr/bin/gcc",
|
||||
"-Wp,-MMD,./.main.o.d",
|
||||
"-nostdinc",
|
||||
"-I/usr/lib/modules/7.2.9-zen1-1-zen/build/arch/x86/include",
|
||||
"-I/usr/lib/modules/7.2.9-zen1-1-zen/build/arch/x86/include/generated",
|
||||
"-I/usr/lib/modules/7.2.9-zen1-1-zen/build/include",
|
||||
"-I/usr/lib/modules/7.2.9-zen1-1-zen/build/include",
|
||||
"-I/usr/lib/modules/7.2.9-zen1-1-zen/build/arch/x86/include/uapi",
|
||||
"-I/usr/lib/modules/7.2.9-zen1-1-zen/build/arch/x86/include/generated/uapi",
|
||||
"-I/usr/lib/modules/7.2.9-zen1-1-zen/build/include/uapi",
|
||||
"-I/usr/lib/modules/7.2.9-zen1-1-zen/build/include/generated/uapi",
|
||||
"-include",
|
||||
"/usr/lib/modules/7.2.9-zen1-1-zen/build/include/linux/compiler-version.h",
|
||||
"-include",
|
||||
"/usr/lib/modules/7.2.9-zen1-1-zen/build/include/linux/kconfig.h",
|
||||
"-include",
|
||||
"/usr/lib/modules/7.2.9-zen1-1-zen/build/include/linux/compiler_types.h",
|
||||
"-D__KERNEL__",
|
||||
"-fshort-wchar",
|
||||
"-funsigned-char",
|
||||
"-fno-common",
|
||||
"-fno-PIE",
|
||||
"-fno-strict-aliasing",
|
||||
"-std=gnu11",
|
||||
"-fms-extensions",
|
||||
"-mno-sse",
|
||||
"-mno-mmx",
|
||||
"-mno-sse2",
|
||||
"-mno-3dnow",
|
||||
"-mno-avx",
|
||||
"-mno-sse4a",
|
||||
"-mno-avx2",
|
||||
"-fno-tree-vectorize",
|
||||
"-fcf-protection=branch",
|
||||
"-fno-jump-tables",
|
||||
"-m64",
|
||||
"-falign-jumps=1",
|
||||
"-falign-loops=1",
|
||||
"-mno-80387",
|
||||
"-mno-fp-ret-in-387",
|
||||
"-mpreferred-stack-boundary=3",
|
||||
"-mskip-rax-setup",
|
||||
"-march=x86-64",
|
||||
"-mtune=generic",
|
||||
"-mno-red-zone",
|
||||
"-mcmodel=kernel",
|
||||
"-mstack-protector-guard-reg=gs",
|
||||
"-mstack-protector-guard-symbol=__ref_stack_chk_guard",
|
||||
"-Wno-sign-compare",
|
||||
"-fno-asynchronous-unwind-tables",
|
||||
"-mindirect-branch=thunk-extern",
|
||||
"-mindirect-branch-register",
|
||||
"-mindirect-branch-cs-prefix",
|
||||
"-mfunction-return=thunk-extern",
|
||||
"-fno-jump-tables",
|
||||
"-mharden-sls=all",
|
||||
"-fpatchable-function-entry=16,16",
|
||||
"-fno-delete-null-pointer-checks",
|
||||
"-O3",
|
||||
"-fno-allow-store-data-races",
|
||||
"-fstack-protector-strong",
|
||||
"-ftrivial-auto-var-init=zero",
|
||||
"-fzero-init-padding-bits=all",
|
||||
"-fno-stack-clash-protection",
|
||||
"-fdiagnostics-show-context=2",
|
||||
"-pg",
|
||||
"-mrecord-mcount",
|
||||
"-mfentry",
|
||||
"-DCC_USING_FENTRY",
|
||||
"-fmin-function-alignment=16",
|
||||
"-fstrict-flex-arrays=3",
|
||||
"-fno-strict-overflow",
|
||||
"-fno-stack-check",
|
||||
"-fconserve-stack",
|
||||
"-fno-builtin-wcslen",
|
||||
"-Wall",
|
||||
"-Wextra",
|
||||
"-Wundef",
|
||||
"-Werror=implicit-function-declaration",
|
||||
"-Werror=implicit-int",
|
||||
"-Werror=return-type",
|
||||
"-Werror=strict-prototypes",
|
||||
"-Wno-format-security",
|
||||
"-Wno-trigraphs",
|
||||
"-Wno-frame-address",
|
||||
"-Wno-address-of-packed-member",
|
||||
"-Wmissing-declarations",
|
||||
"-Wmissing-prototypes",
|
||||
"-Wframe-larger-than=2048",
|
||||
"-Wno-main",
|
||||
"-Wno-type-limits",
|
||||
"-Wno-dangling-pointer",
|
||||
"-Wvla-larger-than=1",
|
||||
"-Wno-pointer-sign",
|
||||
"-Wcast-function-type",
|
||||
"-Wno-unterminated-string-initialization",
|
||||
"-Wno-array-bounds",
|
||||
"-Wno-stringop-overflow",
|
||||
"-Wno-alloc-size-larger-than",
|
||||
"-Wimplicit-fallthrough=5",
|
||||
"-Werror=date-time",
|
||||
"-Werror=incompatible-pointer-types",
|
||||
"-Werror=designated-init",
|
||||
"-Wenum-conversion",
|
||||
"-Wunused",
|
||||
"-Wno-unused-but-set-variable",
|
||||
"-Wno-unused-const-variable",
|
||||
"-Wno-packed-not-aligned",
|
||||
"-Wno-format-overflow",
|
||||
"-Wno-format-truncation",
|
||||
"-Wno-stringop-truncation",
|
||||
"-Wno-override-init",
|
||||
"-Wno-missing-field-initializers",
|
||||
"-Wno-shift-negative-value",
|
||||
"-Wno-maybe-uninitialized",
|
||||
"-Wno-sign-compare",
|
||||
"-Wno-unused-parameter",
|
||||
"-g",
|
||||
"-gdwarf-5",
|
||||
"-DMODULE",
|
||||
"-DKBUILD_BASENAME=\"main\"",
|
||||
"-DKBUILD_MODNAME=\"main\"",
|
||||
"-D__KBUILD_MODNAME=main",
|
||||
"-c",
|
||||
"-o",
|
||||
"main.o",
|
||||
"main.c"
|
||||
],
|
||||
"directory": "/home/lukas/code/Linux-microcontroller-GPIO/kernel",
|
||||
"output": "main.o"
|
||||
},
|
||||
{
|
||||
"file": "main.mod.c",
|
||||
"arguments": [
|
||||
"/usr/bin/gcc",
|
||||
"-Wp,-MMD,./.main.mod.o.d",
|
||||
"-nostdinc",
|
||||
"-I/usr/lib/modules/7.2.9-zen1-1-zen/build/arch/x86/include",
|
||||
"-I/usr/lib/modules/7.2.9-zen1-1-zen/build/arch/x86/include/generated",
|
||||
"-I/usr/lib/modules/7.2.9-zen1-1-zen/build/include",
|
||||
"-I/usr/lib/modules/7.2.9-zen1-1-zen/build/include",
|
||||
"-I/usr/lib/modules/7.2.9-zen1-1-zen/build/arch/x86/include/uapi",
|
||||
"-I/usr/lib/modules/7.2.9-zen1-1-zen/build/arch/x86/include/generated/uapi",
|
||||
"-I/usr/lib/modules/7.2.9-zen1-1-zen/build/include/uapi",
|
||||
"-I/usr/lib/modules/7.2.9-zen1-1-zen/build/include/generated/uapi",
|
||||
"-include",
|
||||
"/usr/lib/modules/7.2.9-zen1-1-zen/build/include/linux/compiler-version.h",
|
||||
"-include",
|
||||
"/usr/lib/modules/7.2.9-zen1-1-zen/build/include/linux/kconfig.h",
|
||||
"-include",
|
||||
"/usr/lib/modules/7.2.9-zen1-1-zen/build/include/linux/compiler_types.h",
|
||||
"-D__KERNEL__",
|
||||
"-fshort-wchar",
|
||||
"-funsigned-char",
|
||||
"-fno-common",
|
||||
"-fno-PIE",
|
||||
"-fno-strict-aliasing",
|
||||
"-std=gnu11",
|
||||
"-fms-extensions",
|
||||
"-mno-sse",
|
||||
"-mno-mmx",
|
||||
"-mno-sse2",
|
||||
"-mno-3dnow",
|
||||
"-mno-avx",
|
||||
"-mno-sse4a",
|
||||
"-mno-avx2",
|
||||
"-fno-tree-vectorize",
|
||||
"-fcf-protection=branch",
|
||||
"-fno-jump-tables",
|
||||
"-m64",
|
||||
"-falign-jumps=1",
|
||||
"-falign-loops=1",
|
||||
"-mno-80387",
|
||||
"-mno-fp-ret-in-387",
|
||||
"-mpreferred-stack-boundary=3",
|
||||
"-mskip-rax-setup",
|
||||
"-march=x86-64",
|
||||
"-mtune=generic",
|
||||
"-mno-red-zone",
|
||||
"-mcmodel=kernel",
|
||||
"-mstack-protector-guard-reg=gs",
|
||||
"-mstack-protector-guard-symbol=__ref_stack_chk_guard",
|
||||
"-Wno-sign-compare",
|
||||
"-fno-asynchronous-unwind-tables",
|
||||
"-mindirect-branch=thunk-extern",
|
||||
"-mindirect-branch-register",
|
||||
"-mindirect-branch-cs-prefix",
|
||||
"-mfunction-return=thunk-extern",
|
||||
"-fno-jump-tables",
|
||||
"-mharden-sls=all",
|
||||
"-fpatchable-function-entry=16,16",
|
||||
"-fno-delete-null-pointer-checks",
|
||||
"-O3",
|
||||
"-fno-allow-store-data-races",
|
||||
"-fstack-protector-strong",
|
||||
"-ftrivial-auto-var-init=zero",
|
||||
"-fzero-init-padding-bits=all",
|
||||
"-fno-stack-clash-protection",
|
||||
"-fdiagnostics-show-context=2",
|
||||
"-pg",
|
||||
"-mrecord-mcount",
|
||||
"-mfentry",
|
||||
"-DCC_USING_FENTRY",
|
||||
"-fmin-function-alignment=16",
|
||||
"-fstrict-flex-arrays=3",
|
||||
"-fno-strict-overflow",
|
||||
"-fno-stack-check",
|
||||
"-fconserve-stack",
|
||||
"-fno-builtin-wcslen",
|
||||
"-Wall",
|
||||
"-Wextra",
|
||||
"-Wundef",
|
||||
"-Werror=implicit-function-declaration",
|
||||
"-Werror=implicit-int",
|
||||
"-Werror=return-type",
|
||||
"-Werror=strict-prototypes",
|
||||
"-Wno-format-security",
|
||||
"-Wno-trigraphs",
|
||||
"-Wno-frame-address",
|
||||
"-Wno-address-of-packed-member",
|
||||
"-Wmissing-declarations",
|
||||
"-Wmissing-prototypes",
|
||||
"-Wframe-larger-than=2048",
|
||||
"-Wno-main",
|
||||
"-Wno-type-limits",
|
||||
"-Wno-dangling-pointer",
|
||||
"-Wvla-larger-than=1",
|
||||
"-Wno-pointer-sign",
|
||||
"-Wcast-function-type",
|
||||
"-Wno-unterminated-string-initialization",
|
||||
"-Wno-array-bounds",
|
||||
"-Wno-stringop-overflow",
|
||||
"-Wno-alloc-size-larger-than",
|
||||
"-Wimplicit-fallthrough=5",
|
||||
"-Werror=date-time",
|
||||
"-Werror=incompatible-pointer-types",
|
||||
"-Werror=designated-init",
|
||||
"-Wenum-conversion",
|
||||
"-Wunused",
|
||||
"-Wno-unused-but-set-variable",
|
||||
"-Wno-unused-const-variable",
|
||||
"-Wno-packed-not-aligned",
|
||||
"-Wno-format-overflow",
|
||||
"-Wno-format-truncation",
|
||||
"-Wno-stringop-truncation",
|
||||
"-Wno-override-init",
|
||||
"-Wno-missing-field-initializers",
|
||||
"-Wno-shift-negative-value",
|
||||
"-Wno-maybe-uninitialized",
|
||||
"-Wno-sign-compare",
|
||||
"-Wno-unused-parameter",
|
||||
"-g",
|
||||
"-gdwarf-5",
|
||||
"-DMODULE",
|
||||
"-DKBUILD_BASENAME=\"main.mod\"",
|
||||
"-DKBUILD_MODNAME=\"main\"",
|
||||
"-D__KBUILD_MODNAME=main",
|
||||
"-c",
|
||||
"-o",
|
||||
"main.mod.o",
|
||||
"main.mod.c"
|
||||
],
|
||||
"directory": "/home/lukas/code/Linux-microcontroller-GPIO/kernel",
|
||||
"output": "main.mod.o"
|
||||
},
|
||||
{
|
||||
"file": "/usr/lib/modules/7.2.9-zen1-1-zen/build/scripts/module-common.c",
|
||||
"arguments": [
|
||||
"/usr/bin/gcc",
|
||||
"-Wp,-MMD,./..module-common.o.d",
|
||||
"-nostdinc",
|
||||
"-I/usr/lib/modules/7.2.9-zen1-1-zen/build/arch/x86/include",
|
||||
"-I/usr/lib/modules/7.2.9-zen1-1-zen/build/arch/x86/include/generated",
|
||||
"-I/usr/lib/modules/7.2.9-zen1-1-zen/build/include",
|
||||
"-I/usr/lib/modules/7.2.9-zen1-1-zen/build/include",
|
||||
"-I/usr/lib/modules/7.2.9-zen1-1-zen/build/arch/x86/include/uapi",
|
||||
"-I/usr/lib/modules/7.2.9-zen1-1-zen/build/arch/x86/include/generated/uapi",
|
||||
"-I/usr/lib/modules/7.2.9-zen1-1-zen/build/include/uapi",
|
||||
"-I/usr/lib/modules/7.2.9-zen1-1-zen/build/include/generated/uapi",
|
||||
"-include",
|
||||
"/usr/lib/modules/7.2.9-zen1-1-zen/build/include/linux/compiler-version.h",
|
||||
"-include",
|
||||
"/usr/lib/modules/7.2.9-zen1-1-zen/build/include/linux/kconfig.h",
|
||||
"-include",
|
||||
"/usr/lib/modules/7.2.9-zen1-1-zen/build/include/linux/compiler_types.h",
|
||||
"-D__KERNEL__",
|
||||
"-fshort-wchar",
|
||||
"-funsigned-char",
|
||||
"-fno-common",
|
||||
"-fno-PIE",
|
||||
"-fno-strict-aliasing",
|
||||
"-std=gnu11",
|
||||
"-fms-extensions",
|
||||
"-mno-sse",
|
||||
"-mno-mmx",
|
||||
"-mno-sse2",
|
||||
"-mno-3dnow",
|
||||
"-mno-avx",
|
||||
"-mno-sse4a",
|
||||
"-mno-avx2",
|
||||
"-fno-tree-vectorize",
|
||||
"-fcf-protection=branch",
|
||||
"-fno-jump-tables",
|
||||
"-m64",
|
||||
"-falign-jumps=1",
|
||||
"-falign-loops=1",
|
||||
"-mno-80387",
|
||||
"-mno-fp-ret-in-387",
|
||||
"-mpreferred-stack-boundary=3",
|
||||
"-mskip-rax-setup",
|
||||
"-march=x86-64",
|
||||
"-mtune=generic",
|
||||
"-mno-red-zone",
|
||||
"-mcmodel=kernel",
|
||||
"-mstack-protector-guard-reg=gs",
|
||||
"-mstack-protector-guard-symbol=__ref_stack_chk_guard",
|
||||
"-Wno-sign-compare",
|
||||
"-fno-asynchronous-unwind-tables",
|
||||
"-mindirect-branch=thunk-extern",
|
||||
"-mindirect-branch-register",
|
||||
"-mindirect-branch-cs-prefix",
|
||||
"-mfunction-return=thunk-extern",
|
||||
"-fno-jump-tables",
|
||||
"-mharden-sls=all",
|
||||
"-fpatchable-function-entry=16,16",
|
||||
"-fno-delete-null-pointer-checks",
|
||||
"-O3",
|
||||
"-fno-allow-store-data-races",
|
||||
"-fstack-protector-strong",
|
||||
"-ftrivial-auto-var-init=zero",
|
||||
"-fzero-init-padding-bits=all",
|
||||
"-fno-stack-clash-protection",
|
||||
"-fdiagnostics-show-context=2",
|
||||
"-pg",
|
||||
"-mrecord-mcount",
|
||||
"-mfentry",
|
||||
"-DCC_USING_FENTRY",
|
||||
"-fmin-function-alignment=16",
|
||||
"-fstrict-flex-arrays=3",
|
||||
"-fno-strict-overflow",
|
||||
"-fno-stack-check",
|
||||
"-fconserve-stack",
|
||||
"-fno-builtin-wcslen",
|
||||
"-Wall",
|
||||
"-Wextra",
|
||||
"-Wundef",
|
||||
"-Werror=implicit-function-declaration",
|
||||
"-Werror=implicit-int",
|
||||
"-Werror=return-type",
|
||||
"-Werror=strict-prototypes",
|
||||
"-Wno-format-security",
|
||||
"-Wno-trigraphs",
|
||||
"-Wno-frame-address",
|
||||
"-Wno-address-of-packed-member",
|
||||
"-Wmissing-declarations",
|
||||
"-Wmissing-prototypes",
|
||||
"-Wframe-larger-than=2048",
|
||||
"-Wno-main",
|
||||
"-Wno-type-limits",
|
||||
"-Wno-dangling-pointer",
|
||||
"-Wvla-larger-than=1",
|
||||
"-Wno-pointer-sign",
|
||||
"-Wcast-function-type",
|
||||
"-Wno-unterminated-string-initialization",
|
||||
"-Wno-array-bounds",
|
||||
"-Wno-stringop-overflow",
|
||||
"-Wno-alloc-size-larger-than",
|
||||
"-Wimplicit-fallthrough=5",
|
||||
"-Werror=date-time",
|
||||
"-Werror=incompatible-pointer-types",
|
||||
"-Werror=designated-init",
|
||||
"-Wenum-conversion",
|
||||
"-Wunused",
|
||||
"-Wno-unused-but-set-variable",
|
||||
"-Wno-unused-const-variable",
|
||||
"-Wno-packed-not-aligned",
|
||||
"-Wno-format-overflow",
|
||||
"-Wno-format-truncation",
|
||||
"-Wno-stringop-truncation",
|
||||
"-Wno-override-init",
|
||||
"-Wno-missing-field-initializers",
|
||||
"-Wno-shift-negative-value",
|
||||
"-Wno-maybe-uninitialized",
|
||||
"-Wno-sign-compare",
|
||||
"-Wno-unused-parameter",
|
||||
"-g",
|
||||
"-gdwarf-5",
|
||||
"-DMODULE",
|
||||
"-DKBUILD_BASENAME=\".module_common\"",
|
||||
"-DKBUILD_MODNAME=\".module_common.o\"",
|
||||
"-D__KBUILD_MODNAME=.module_common.o",
|
||||
"-c",
|
||||
"-o",
|
||||
".module-common.o",
|
||||
"/usr/lib/modules/7.2.9-zen1-1-zen/build/scripts/module-common.c"
|
||||
],
|
||||
"directory": "/home/lukas/code/Linux-microcontroller-GPIO/kernel",
|
||||
"output": ".module-common.o"
|
||||
}
|
||||
]
|
||||
+234
@@ -0,0 +1,234 @@
|
||||
#include "../include/usb.h"
|
||||
#include "asm-generic/errno-base.h"
|
||||
#include "linux/cleanup.h"
|
||||
#include "linux/device/devres.h"
|
||||
#include "linux/gfp_types.h"
|
||||
#include <linux/gpio/driver.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/usb.h>
|
||||
|
||||
#define GPIO_PIN_COUNT 18
|
||||
|
||||
struct microcontroller_gpio {
|
||||
struct gpio_chip chip; /* kernel GPIO controller object */
|
||||
struct usb_device *udev; /* handle used for all USB transfers */
|
||||
struct usb_interface *intf;
|
||||
unsigned char ep_addr;
|
||||
int interval;
|
||||
};
|
||||
|
||||
#include <linux/slab.h>
|
||||
#include <linux/usb.h>
|
||||
|
||||
static int send_cmd_get_response_control(struct usb_device *udev, u8 *dst,
|
||||
__u16 max_resp_size,
|
||||
enum vendor_request request_type,
|
||||
const u8 cmd[2]) {
|
||||
int retval;
|
||||
u16 wValue;
|
||||
if (cmd == NULL) {
|
||||
wValue = ((u16)cmd[0] << 8) | cmd[1]; /* Pack 2 command bytes into wValue */
|
||||
} else {
|
||||
wValue = 0;
|
||||
}
|
||||
|
||||
/* 2. Execute Control IN transfer */
|
||||
retval = usb_control_msg(
|
||||
udev, usb_rcvctrlpipe(udev, 0), /* Control IN pipe */
|
||||
request_type, /* bRequest */
|
||||
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, /* bmRequestType */
|
||||
wValue, /* 2 Command bytes sent in SETUP */
|
||||
0x0000, /* wIndex (unused) */
|
||||
dst, /* Buffer for incoming data */
|
||||
max_resp_size, /* Request up to 256 bytes */
|
||||
2000 /* Timeout (ms) */
|
||||
);
|
||||
|
||||
if (retval < 0) {
|
||||
pr_err("Control transfer failed: %d\n", retval);
|
||||
}
|
||||
|
||||
return retval;
|
||||
}
|
||||
|
||||
static void usb_data_send_completed(struct urb *urb) {
|
||||
if (urb->status == 0)
|
||||
pr_info("Async transfer successful!\n");
|
||||
else
|
||||
pr_err("Async transfer failed with status: %d\n", urb->status);
|
||||
|
||||
kfree(urb->transfer_buffer);
|
||||
}
|
||||
|
||||
static int async_send_usb_data_to_microcontroller(const unsigned char *msg,
|
||||
size_t msg_len,
|
||||
struct usb_device *udev,
|
||||
unsigned char ep_addr,int interval) {
|
||||
struct urb *urb;
|
||||
char *buf_dma;
|
||||
int retval;
|
||||
unsigned int pipe = usb_sndbulkpipe(udev, ep_addr);
|
||||
|
||||
urb = usb_alloc_urb(0, GFP_KERNEL);
|
||||
if (!urb)
|
||||
return -ENOMEM;
|
||||
|
||||
buf_dma = kzalloc(msg_len, GFP_KERNEL);
|
||||
if (!buf_dma) {
|
||||
usb_free_urb(urb);
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
memcpy(buf_dma, msg, msg_len);
|
||||
|
||||
usb_fill_int_urb(urb, udev, pipe, buf_dma, msg_len, usb_data_send_completed, NULL, interval);
|
||||
|
||||
retval = usb_submit_urb(urb, GFP_KERNEL);
|
||||
if (retval) {
|
||||
pr_err("Failed to submit URB: %d\n", retval);
|
||||
kfree(buf_dma);
|
||||
}
|
||||
|
||||
// usb_data_send_completed will free is automaticaly
|
||||
usb_free_urb(urb);
|
||||
|
||||
return retval;
|
||||
}
|
||||
|
||||
/* Read the level of line "off" from the device; return 1, 0 or -errno. */
|
||||
static int microcontroller_get(struct gpio_chip *gc, unsigned int off) {
|
||||
if (off>= gc->ngpio) {
|
||||
return -EINVAL;
|
||||
}
|
||||
struct microcontroller_gpio *dev = gpiochip_get_data(gc);
|
||||
u8 retval;
|
||||
const u8 cmd[] = {OP_GPIO_GET,off};
|
||||
send_cmd_get_response_control(dev->udev, &retval, sizeof(retval), CONTROL_PINS, cmd);
|
||||
|
||||
return retval;
|
||||
}
|
||||
|
||||
/* Drive output line "off" to "val" (0 or 1) on the device; return 0 or -errno.
|
||||
*/
|
||||
static int microcontroller_set(struct gpio_chip *gc, unsigned int off,
|
||||
int val) {
|
||||
struct microcontroller_gpio *dev = gpiochip_get_data(gc);
|
||||
const unsigned char msg[2] = {OP_GPIO_SET, val};
|
||||
return async_send_usb_data_to_microcontroller(msg, sizeof(msg), dev->udev,
|
||||
dev->ep_addr,dev->interval);
|
||||
};
|
||||
|
||||
/* Tell the device to make line "off" an input; return 0 or -errno. */
|
||||
static int microcontroller_dir_in(struct gpio_chip *gc, unsigned int off) {
|
||||
struct microcontroller_gpio *dev = gpiochip_get_data(gc);
|
||||
const unsigned char msg[2] = {OP_GPIO_SET_DIR, DIR_IN};
|
||||
return async_send_usb_data_to_microcontroller(msg, sizeof(msg), dev->udev,
|
||||
dev->ep_addr,dev->interval);
|
||||
}
|
||||
|
||||
/* Tell the device to make line "off" an output driving "val"; return 0 or
|
||||
* -errno. */
|
||||
static int microcontroller_dir_out(struct gpio_chip *gc, unsigned int off,
|
||||
int val) {
|
||||
struct microcontroller_gpio *dev = gpiochip_get_data(gc);
|
||||
const unsigned char msg[3] = {OP_GPIO_SET_DIR, DIR_OUT, val};
|
||||
return async_send_usb_data_to_microcontroller(msg, sizeof(msg), dev->udev,
|
||||
dev->ep_addr,dev->interval);
|
||||
}
|
||||
|
||||
static int get_microcontroller_capabilities(struct microcontroller_gpio *dev) {
|
||||
struct microcontroller_capabilities capabs;
|
||||
if (send_cmd_get_response_control(dev->udev, (u8 *)&capabs, sizeof(capabs),
|
||||
GET_INFO, NULL) != sizeof(capabs)) {
|
||||
dev->chip.ngpio = capabs.num_gpio;
|
||||
return EINVAL;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Called when the USB device matches: allocate state, fill gpio_chip, register
|
||||
* it. */
|
||||
static int microcontroller_probe(struct usb_interface *intf,
|
||||
const struct usb_device_id *id) {
|
||||
struct microcontroller_gpio *dev;
|
||||
dev = devm_kzalloc(&intf->dev, sizeof(*dev), GFP_KERNEL);
|
||||
if (!dev) {
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
|
||||
|
||||
struct usb_host_interface *iface_desc = intf->cur_altsetting;
|
||||
struct usb_endpoint_descriptor *ep_desc;
|
||||
int i;
|
||||
|
||||
for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
|
||||
ep_desc = &iface_desc->endpoint[i].desc;
|
||||
|
||||
if (usb_endpoint_is_int_out(ep_desc)) {
|
||||
pr_info("Found Bulk OUT endpoint address: 0x%02X\n",
|
||||
ep_desc->bEndpointAddress);
|
||||
dev->interval = ep_desc->bInterval;
|
||||
dev->ep_addr = ep_desc->bEndpointAddress;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
usb_set_intfdata(intf, dev);
|
||||
dev_info(&intf->dev, "USB device attached: vendor=0x%04x, product=0x%04x\n",
|
||||
le16_to_cpu(dev->udev->descriptor.idVendor),
|
||||
le16_to_cpu(dev->udev->descriptor.idProduct));
|
||||
|
||||
dev->udev = usb_get_dev(interface_to_usbdev(intf));
|
||||
dev->intf = intf;
|
||||
|
||||
dev->chip.label = "microcontroller-gpio";
|
||||
dev->chip.parent = &intf->dev;
|
||||
dev->chip.owner = THIS_MODULE;
|
||||
dev->chip.base = -1;
|
||||
|
||||
dev->chip.get = microcontroller_get;
|
||||
dev->chip.set = microcontroller_set;
|
||||
dev->chip.direction_input = microcontroller_dir_in;
|
||||
dev->chip.direction_output = microcontroller_dir_out;
|
||||
get_microcontroller_capabilities(dev);
|
||||
int ret = devm_gpiochip_add_data(&intf->dev, &dev->chip, dev);
|
||||
if (ret) {
|
||||
dev_err(&intf->dev, "Failed to add gpio_chip\n");
|
||||
return ret;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Called on unplug or driver unbind: release the USB device reference. */
|
||||
static void microcontroller_disconnect(struct usb_interface *intf) {
|
||||
struct microcontroller_gpio *dev;
|
||||
dev = usb_get_intfdata(intf);
|
||||
|
||||
usb_set_intfdata(intf, NULL);
|
||||
if (dev) {
|
||||
usb_put_dev(dev->udev);
|
||||
}
|
||||
}
|
||||
|
||||
/* VID/PID pairs this driver binds to. */
|
||||
static const struct usb_device_id microcontroller_table[] = {
|
||||
{USB_DEVICE(0xfad0, 0x9000)}, {}};
|
||||
/* Exports the table so udev can autoload the module when the device appears. */
|
||||
MODULE_DEVICE_TABLE(usb, microcontroller_table);
|
||||
|
||||
/* Ties probe, disconnect and the ID table together for the USB core. */
|
||||
static struct usb_driver microcontroller_driver = {
|
||||
.name = "microcontroller-GPIO",
|
||||
.probe = microcontroller_probe,
|
||||
.disconnect = microcontroller_disconnect,
|
||||
.id_table = microcontroller_table,
|
||||
};
|
||||
/* Generates module init and exit that register and unregister
|
||||
* microcontroller_driver.
|
||||
*/
|
||||
module_usb_driver(microcontroller_driver);
|
||||
|
||||
MODULE_LICENSE("GPL");
|
||||
Binary file not shown.
@@ -0,0 +1 @@
|
||||
./main.o
|
||||
@@ -0,0 +1,22 @@
|
||||
#include <linux/module.h>
|
||||
#include <linux/export-internal.h>
|
||||
#include <linux/compiler.h>
|
||||
|
||||
MODULE_INFO(name, KBUILD_MODNAME);
|
||||
|
||||
__visible struct module __this_module
|
||||
__section(".gnu.linkonce.this_module") = {
|
||||
.name = KBUILD_MODNAME,
|
||||
.init = init_module,
|
||||
#ifdef CONFIG_MODULE_UNLOAD
|
||||
.exit = cleanup_module,
|
||||
#endif
|
||||
.arch = MODULE_ARCH_INIT,
|
||||
};
|
||||
|
||||
|
||||
MODULE_INFO(depends, "");
|
||||
|
||||
MODULE_ALIAS("usb:v1234p5678d*dc*dsc*dp*ic*isc*ip*in*");
|
||||
|
||||
MODULE_INFO(srcversion, "263CD52FCADD9F48F0ABAB5");
|
||||
Binary file not shown.
Binary file not shown.
@@ -0,0 +1 @@
|
||||
main.o
|
||||
Reference in New Issue
Block a user