From patchwork Sat Jun 2 12:37:58 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Young X-Patchwork-Id: 10444791 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id F09386028E for ; Sat, 2 Jun 2018 12:38:11 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id DE35128A10 for ; Sat, 2 Jun 2018 12:38:11 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id CFD9C28A60; Sat, 2 Jun 2018 12:38:11 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00, MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8B08A28A10 for ; Sat, 2 Jun 2018 12:38:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751553AbeFBMiI (ORCPT ); Sat, 2 Jun 2018 08:38:08 -0400 Received: from gofer.mess.org ([88.97.38.141]:58233 "EHLO gofer.mess.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750914AbeFBMiC (ORCPT ); Sat, 2 Jun 2018 08:38:02 -0400 Received: by gofer.mess.org (Postfix, from userid 1000) id 006A160F29; Sat, 2 Jun 2018 13:37:59 +0100 (BST) From: Sean Young To: linux-media@vger.kernel.org, Matthias Reichl Subject: [RFC PATCH v1 4/4] keytable: add bpf protocols Date: Sat, 2 Jun 2018 13:37:58 +0100 Message-Id: <09d30a6d7b1c82259a30deda10bd1851a162608c.1527941988.git.sean@mess.org> X-Mailer: git-send-email 2.11.0 In-Reply-To: References: In-Reply-To: References: Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add grundig decoder and infrastructure for build bpf protocols. Signed-off-by: Sean Young --- configure.ac | 5 + utils/keytable/Makefile.am | 4 + utils/keytable/bpf_protocols/Makefile.am | 14 + utils/keytable/bpf_protocols/bpf_helpers.h | 302 ++++++++++++++++++++ utils/keytable/bpf_protocols/grundig.c | 113 ++++++++ utils/keytable/rc_keymaps_bpf/RP75_LCD.toml | 45 +++ v4l-utils.spec.in | 2 +- 7 files changed, 484 insertions(+), 1 deletion(-) create mode 100644 utils/keytable/bpf_protocols/Makefile.am create mode 100644 utils/keytable/bpf_protocols/bpf_helpers.h create mode 100644 utils/keytable/bpf_protocols/grundig.c create mode 100644 utils/keytable/rc_keymaps_bpf/RP75_LCD.toml diff --git a/configure.ac b/configure.ac index 1f48913c..8872a483 100644 --- a/configure.ac +++ b/configure.ac @@ -23,6 +23,7 @@ AC_CONFIG_FILES([Makefile utils/libmedia_dev/Makefile utils/dvb/Makefile utils/keytable/Makefile + utils/keytable/bpf_protocols/Makefile utils/ir-ctl/Makefile utils/cx18-ctl/Makefile utils/ivtv-ctl/Makefile @@ -172,11 +173,15 @@ AC_SUBST([LIBELF_CFLAGS]) AC_SUBST([LIBELF_LIBS]) AM_CONDITIONAL([HAVE_LIBELF], [test x$libelf_pkgconfig = xyes]) if test "x$libelf_pkgconfig" = "xyes"; then + AC_CHECK_PROG([CLANG], clang, clang) + AC_CHECK_PROG([LLC], llc, llc) AC_DEFINE([HAVE_LIBELF], [1], [libelf library is present]) else AC_MSG_WARN(libelf library not available) fi +AM_CONDITIONAL([BPF_PROTOCOLS], [test x$CLANG = xclang -a x$LLC = xllc]) + AS_IF([test "x$x11_pkgconfig" = xyes], [PKG_CHECK_MODULES(GL, [gl], [gl_pkgconfig=yes], [gl_pkgconfig=no])], [gl_pkgconfig=no]) AC_SUBST([GL_CFLAGS]) diff --git a/utils/keytable/Makefile.am b/utils/keytable/Makefile.am index df2b2231..90e4c8c8 100644 --- a/utils/keytable/Makefile.am +++ b/utils/keytable/Makefile.am @@ -13,6 +13,10 @@ endif ir_keytable_LDADD = @LIBINTL@ ir_keytable_LDFLAGS = $(ARGP_LIBS) $(LIBELF_LIBS) +if BPF_PROTOCOLS +SUBDIRS = bpf_protocols +endif + EXTRA_DIST = 70-infrared.rules rc_keymaps rc_keymaps_userspace gen_keytables.pl ir-keytable.1 rc_maps.cfg # custom target diff --git a/utils/keytable/bpf_protocols/Makefile.am b/utils/keytable/bpf_protocols/Makefile.am new file mode 100644 index 00000000..aa748900 --- /dev/null +++ b/utils/keytable/bpf_protocols/Makefile.am @@ -0,0 +1,14 @@ + +NOSTDINC=-nostdinc -isystem $(shell $(CLANG) -print-file-name=include) + +%.o: %.c + $(CLANG) -I../../../include $(NOSTDINC) -I/usr/include -target bpf -O2 -emit-llvm -c $< -o - | $(LLC) -march=bpf -filetype=obj -o $@ + +PROTOCOLS = grundig.o + +all: $(PROTOCOLS) + +# custom target +install-data-local: + $(install_sh) -d "$(DESTDIR)$(keytableuserdir)/protocols" + $(install_sh) $(PROTOCOLS) "$(DESTDIR)$(keytableuserdir)/protocols" diff --git a/utils/keytable/bpf_protocols/bpf_helpers.h b/utils/keytable/bpf_protocols/bpf_helpers.h new file mode 100644 index 00000000..a6864827 --- /dev/null +++ b/utils/keytable/bpf_protocols/bpf_helpers.h @@ -0,0 +1,302 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __BPF_HELPERS_H +#define __BPF_HELPERS_H + +/* helper macro to place programs, maps, license in + * different sections in elf_bpf file. Section names + * are interpreted by elf_bpf loader + */ +#define SEC(NAME) __attribute__((section(NAME), used)) + +/* helper functions called from eBPF programs written in C */ +static void *(*bpf_map_lookup_elem)(void *map, void *key) = + (void *) BPF_FUNC_map_lookup_elem; +static int (*bpf_map_update_elem)(void *map, void *key, void *value, + unsigned long long flags) = + (void *) BPF_FUNC_map_update_elem; +static int (*bpf_map_delete_elem)(void *map, void *key) = + (void *) BPF_FUNC_map_delete_elem; +static int (*bpf_probe_read)(void *dst, int size, void *unsafe_ptr) = + (void *) BPF_FUNC_probe_read; +static unsigned long long (*bpf_ktime_get_ns)(void) = + (void *) BPF_FUNC_ktime_get_ns; +static int (*bpf_trace_printk)(const char *fmt, int fmt_size, ...) = + (void *) BPF_FUNC_trace_printk; +static void (*bpf_tail_call)(void *ctx, void *map, int index) = + (void *) BPF_FUNC_tail_call; +static unsigned long long (*bpf_get_smp_processor_id)(void) = + (void *) BPF_FUNC_get_smp_processor_id; +static unsigned long long (*bpf_get_current_pid_tgid)(void) = + (void *) BPF_FUNC_get_current_pid_tgid; +static unsigned long long (*bpf_get_current_uid_gid)(void) = + (void *) BPF_FUNC_get_current_uid_gid; +static int (*bpf_get_current_comm)(void *buf, int buf_size) = + (void *) BPF_FUNC_get_current_comm; +static unsigned long long (*bpf_perf_event_read)(void *map, + unsigned long long flags) = + (void *) BPF_FUNC_perf_event_read; +static int (*bpf_clone_redirect)(void *ctx, int ifindex, int flags) = + (void *) BPF_FUNC_clone_redirect; +static int (*bpf_redirect)(int ifindex, int flags) = + (void *) BPF_FUNC_redirect; +static int (*bpf_redirect_map)(void *map, int key, int flags) = + (void *) BPF_FUNC_redirect_map; +static int (*bpf_perf_event_output)(void *ctx, void *map, + unsigned long long flags, void *data, + int size) = + (void *) BPF_FUNC_perf_event_output; +static int (*bpf_get_stackid)(void *ctx, void *map, int flags) = + (void *) BPF_FUNC_get_stackid; +static int (*bpf_probe_write_user)(void *dst, void *src, int size) = + (void *) BPF_FUNC_probe_write_user; +static int (*bpf_current_task_under_cgroup)(void *map, int index) = + (void *) BPF_FUNC_current_task_under_cgroup; +static int (*bpf_skb_get_tunnel_key)(void *ctx, void *key, int size, int flags) = + (void *) BPF_FUNC_skb_get_tunnel_key; +static int (*bpf_skb_set_tunnel_key)(void *ctx, void *key, int size, int flags) = + (void *) BPF_FUNC_skb_set_tunnel_key; +static int (*bpf_skb_get_tunnel_opt)(void *ctx, void *md, int size) = + (void *) BPF_FUNC_skb_get_tunnel_opt; +static int (*bpf_skb_set_tunnel_opt)(void *ctx, void *md, int size) = + (void *) BPF_FUNC_skb_set_tunnel_opt; +static unsigned long long (*bpf_get_prandom_u32)(void) = + (void *) BPF_FUNC_get_prandom_u32; +static int (*bpf_xdp_adjust_head)(void *ctx, int offset) = + (void *) BPF_FUNC_xdp_adjust_head; +static int (*bpf_xdp_adjust_meta)(void *ctx, int offset) = + (void *) BPF_FUNC_xdp_adjust_meta; +static int (*bpf_setsockopt)(void *ctx, int level, int optname, void *optval, + int optlen) = + (void *) BPF_FUNC_setsockopt; +static int (*bpf_getsockopt)(void *ctx, int level, int optname, void *optval, + int optlen) = + (void *) BPF_FUNC_getsockopt; +static int (*bpf_sock_ops_cb_flags_set)(void *ctx, int flags) = + (void *) BPF_FUNC_sock_ops_cb_flags_set; +static int (*bpf_sk_redirect_map)(void *ctx, void *map, int key, int flags) = + (void *) BPF_FUNC_sk_redirect_map; +static int (*bpf_sk_redirect_hash)(void *ctx, void *map, void *key, int flags) = + (void *) BPF_FUNC_sk_redirect_hash; +static int (*bpf_sock_map_update)(void *map, void *key, void *value, + unsigned long long flags) = + (void *) BPF_FUNC_sock_map_update; +static int (*bpf_sock_hash_update)(void *map, void *key, void *value, + unsigned long long flags) = + (void *) BPF_FUNC_sock_hash_update; +static int (*bpf_perf_event_read_value)(void *map, unsigned long long flags, + void *buf, unsigned int buf_size) = + (void *) BPF_FUNC_perf_event_read_value; +static int (*bpf_perf_prog_read_value)(void *ctx, void *buf, + unsigned int buf_size) = + (void *) BPF_FUNC_perf_prog_read_value; +static int (*bpf_override_return)(void *ctx, unsigned long rc) = + (void *) BPF_FUNC_override_return; +static int (*bpf_msg_redirect_map)(void *ctx, void *map, int key, int flags) = + (void *) BPF_FUNC_msg_redirect_map; +static int (*bpf_msg_redirect_hash)(void *ctx, + void *map, void *key, int flags) = + (void *) BPF_FUNC_msg_redirect_hash; +static int (*bpf_msg_apply_bytes)(void *ctx, int len) = + (void *) BPF_FUNC_msg_apply_bytes; +static int (*bpf_msg_cork_bytes)(void *ctx, int len) = + (void *) BPF_FUNC_msg_cork_bytes; +static int (*bpf_msg_pull_data)(void *ctx, int start, int end, int flags) = + (void *) BPF_FUNC_msg_pull_data; +static int (*bpf_bind)(void *ctx, void *addr, int addr_len) = + (void *) BPF_FUNC_bind; +static int (*bpf_xdp_adjust_tail)(void *ctx, int offset) = + (void *) BPF_FUNC_xdp_adjust_tail; +static int (*bpf_skb_get_xfrm_state)(void *ctx, int index, void *state, + int size, int flags) = + (void *) BPF_FUNC_skb_get_xfrm_state; +static int (*bpf_get_stack)(void *ctx, void *buf, int size, int flags) = + (void *) BPF_FUNC_get_stack; +static int (*bpf_fib_lookup)(void *ctx, struct bpf_fib_lookup *params, + int plen, __u32 flags) = + (void *) BPF_FUNC_fib_lookup; +static int (*bpf_rc_repeat)(void *ctx) = + (void *) BPF_FUNC_rc_repeat; +static int (*bpf_rc_keydown)(void *ctx, unsigned int protocol, + unsigned long long scancode, unsigned int toggle) = + (void *) BPF_FUNC_rc_keydown; + + +/* llvm builtin functions that eBPF C program may use to + * emit BPF_LD_ABS and BPF_LD_IND instructions + */ +struct sk_buff; +unsigned long long load_byte(void *skb, + unsigned long long off) asm("llvm.bpf.load.byte"); +unsigned long long load_half(void *skb, + unsigned long long off) asm("llvm.bpf.load.half"); +unsigned long long load_word(void *skb, + unsigned long long off) asm("llvm.bpf.load.word"); + +/* a helper structure used by eBPF C program + * to describe map attributes to elf_bpf loader + */ +struct bpf_map_def { + unsigned int type; + unsigned int key_size; + unsigned int value_size; + unsigned int max_entries; + unsigned int map_flags; + unsigned int inner_map_idx; + unsigned int numa_node; +}; + +static int (*bpf_skb_load_bytes)(void *ctx, int off, void *to, int len) = + (void *) BPF_FUNC_skb_load_bytes; +static int (*bpf_skb_store_bytes)(void *ctx, int off, void *from, int len, int flags) = + (void *) BPF_FUNC_skb_store_bytes; +static int (*bpf_l3_csum_replace)(void *ctx, int off, int from, int to, int flags) = + (void *) BPF_FUNC_l3_csum_replace; +static int (*bpf_l4_csum_replace)(void *ctx, int off, int from, int to, int flags) = + (void *) BPF_FUNC_l4_csum_replace; +static int (*bpf_csum_diff)(void *from, int from_size, void *to, int to_size, int seed) = + (void *) BPF_FUNC_csum_diff; +static int (*bpf_skb_under_cgroup)(void *ctx, void *map, int index) = + (void *) BPF_FUNC_skb_under_cgroup; +static int (*bpf_skb_change_head)(void *, int len, int flags) = + (void *) BPF_FUNC_skb_change_head; +static int (*bpf_skb_pull_data)(void *, int len) = + (void *) BPF_FUNC_skb_pull_data; + +/* Scan the ARCH passed in from ARCH env variable (see Makefile) */ +#if defined(__TARGET_ARCH_x86) + #define bpf_target_x86 + #define bpf_target_defined +#elif defined(__TARGET_ARCH_s930x) + #define bpf_target_s930x + #define bpf_target_defined +#elif defined(__TARGET_ARCH_arm64) + #define bpf_target_arm64 + #define bpf_target_defined +#elif defined(__TARGET_ARCH_mips) + #define bpf_target_mips + #define bpf_target_defined +#elif defined(__TARGET_ARCH_powerpc) + #define bpf_target_powerpc + #define bpf_target_defined +#elif defined(__TARGET_ARCH_sparc) + #define bpf_target_sparc + #define bpf_target_defined +#else + #undef bpf_target_defined +#endif + +/* Fall back to what the compiler says */ +#ifndef bpf_target_defined +#if defined(__x86_64__) + #define bpf_target_x86 +#elif defined(__s390x__) + #define bpf_target_s930x +#elif defined(__aarch64__) + #define bpf_target_arm64 +#elif defined(__mips__) + #define bpf_target_mips +#elif defined(__powerpc__) + #define bpf_target_powerpc +#elif defined(__sparc__) + #define bpf_target_sparc +#endif +#endif + +#if defined(bpf_target_x86) + +#define PT_REGS_PARM1(x) ((x)->di) +#define PT_REGS_PARM2(x) ((x)->si) +#define PT_REGS_PARM3(x) ((x)->dx) +#define PT_REGS_PARM4(x) ((x)->cx) +#define PT_REGS_PARM5(x) ((x)->r8) +#define PT_REGS_RET(x) ((x)->sp) +#define PT_REGS_FP(x) ((x)->bp) +#define PT_REGS_RC(x) ((x)->ax) +#define PT_REGS_SP(x) ((x)->sp) +#define PT_REGS_IP(x) ((x)->ip) + +#elif defined(bpf_target_s390x) + +#define PT_REGS_PARM1(x) ((x)->gprs[2]) +#define PT_REGS_PARM2(x) ((x)->gprs[3]) +#define PT_REGS_PARM3(x) ((x)->gprs[4]) +#define PT_REGS_PARM4(x) ((x)->gprs[5]) +#define PT_REGS_PARM5(x) ((x)->gprs[6]) +#define PT_REGS_RET(x) ((x)->gprs[14]) +#define PT_REGS_FP(x) ((x)->gprs[11]) /* Works only with CONFIG_FRAME_POINTER */ +#define PT_REGS_RC(x) ((x)->gprs[2]) +#define PT_REGS_SP(x) ((x)->gprs[15]) +#define PT_REGS_IP(x) ((x)->psw.addr) + +#elif defined(bpf_target_arm64) + +#define PT_REGS_PARM1(x) ((x)->regs[0]) +#define PT_REGS_PARM2(x) ((x)->regs[1]) +#define PT_REGS_PARM3(x) ((x)->regs[2]) +#define PT_REGS_PARM4(x) ((x)->regs[3]) +#define PT_REGS_PARM5(x) ((x)->regs[4]) +#define PT_REGS_RET(x) ((x)->regs[30]) +#define PT_REGS_FP(x) ((x)->regs[29]) /* Works only with CONFIG_FRAME_POINTER */ +#define PT_REGS_RC(x) ((x)->regs[0]) +#define PT_REGS_SP(x) ((x)->sp) +#define PT_REGS_IP(x) ((x)->pc) + +#elif defined(bpf_target_mips) + +#define PT_REGS_PARM1(x) ((x)->regs[4]) +#define PT_REGS_PARM2(x) ((x)->regs[5]) +#define PT_REGS_PARM3(x) ((x)->regs[6]) +#define PT_REGS_PARM4(x) ((x)->regs[7]) +#define PT_REGS_PARM5(x) ((x)->regs[8]) +#define PT_REGS_RET(x) ((x)->regs[31]) +#define PT_REGS_FP(x) ((x)->regs[30]) /* Works only with CONFIG_FRAME_POINTER */ +#define PT_REGS_RC(x) ((x)->regs[1]) +#define PT_REGS_SP(x) ((x)->regs[29]) +#define PT_REGS_IP(x) ((x)->cp0_epc) + +#elif defined(bpf_target_powerpc) + +#define PT_REGS_PARM1(x) ((x)->gpr[3]) +#define PT_REGS_PARM2(x) ((x)->gpr[4]) +#define PT_REGS_PARM3(x) ((x)->gpr[5]) +#define PT_REGS_PARM4(x) ((x)->gpr[6]) +#define PT_REGS_PARM5(x) ((x)->gpr[7]) +#define PT_REGS_RC(x) ((x)->gpr[3]) +#define PT_REGS_SP(x) ((x)->sp) +#define PT_REGS_IP(x) ((x)->nip) + +#elif defined(bpf_target_sparc) + +#define PT_REGS_PARM1(x) ((x)->u_regs[UREG_I0]) +#define PT_REGS_PARM2(x) ((x)->u_regs[UREG_I1]) +#define PT_REGS_PARM3(x) ((x)->u_regs[UREG_I2]) +#define PT_REGS_PARM4(x) ((x)->u_regs[UREG_I3]) +#define PT_REGS_PARM5(x) ((x)->u_regs[UREG_I4]) +#define PT_REGS_RET(x) ((x)->u_regs[UREG_I7]) +#define PT_REGS_RC(x) ((x)->u_regs[UREG_I0]) +#define PT_REGS_SP(x) ((x)->u_regs[UREG_FP]) + +/* Should this also be a bpf_target check for the sparc case? */ +#if defined(__arch64__) +#define PT_REGS_IP(x) ((x)->tpc) +#else +#define PT_REGS_IP(x) ((x)->pc) +#endif + +#endif + +#ifdef bpf_target_powerpc +#define BPF_KPROBE_READ_RET_IP(ip, ctx) ({ (ip) = (ctx)->link; }) +#define BPF_KRETPROBE_READ_RET_IP BPF_KPROBE_READ_RET_IP +#elif bpf_target_sparc +#define BPF_KPROBE_READ_RET_IP(ip, ctx) ({ (ip) = PT_REGS_RET(ctx); }) +#define BPF_KRETPROBE_READ_RET_IP BPF_KPROBE_READ_RET_IP +#else +#define BPF_KPROBE_READ_RET_IP(ip, ctx) ({ \ + bpf_probe_read(&(ip), sizeof(ip), (void *)PT_REGS_RET(ctx)); }) +#define BPF_KRETPROBE_READ_RET_IP(ip, ctx) ({ \ + bpf_probe_read(&(ip), sizeof(ip), \ + (void *)(PT_REGS_FP(ctx) + sizeof(ip))); }) +#endif + +#endif diff --git a/utils/keytable/bpf_protocols/grundig.c b/utils/keytable/bpf_protocols/grundig.c new file mode 100644 index 00000000..a2912449 --- /dev/null +++ b/utils/keytable/bpf_protocols/grundig.c @@ -0,0 +1,113 @@ + +#include +#include + +#include "bpf_helpers.h" + +enum grundig_state { + STATE_INACTIVE, + STATE_HEADER_SPACE, + STATE_LEADING_PULSE, + STATE_BITS_SPACE, + STATE_BITS_PULSE, +}; + +struct decoder_state { + unsigned int bits; + enum grundig_state state; + unsigned int count; + unsigned int last_space; +}; + +struct bpf_map_def SEC("maps") decoder_state_map = { + .type = BPF_MAP_TYPE_ARRAY, + .key_size = sizeof(unsigned int), + .value_size = sizeof(struct decoder_state), + .max_entries = 1, +}; + +static inline int eq_margin(unsigned d1, unsigned d2, unsigned margin) +{ + return ((d1 > (d2 - margin)) && (d1 < (d2 + margin))); +} + +// These values can be overridden in the rc_keymap toml +int header_pulse = 900; +int header_space = 2900; +int leader_pulse = 1300; + +SEC("grundig") +int bpf_decoder(unsigned int *sample) +{ + unsigned int key = 0; + struct decoder_state *s = bpf_map_lookup_elem(&decoder_state_map, &key); + struct decoder_state init = {}; + + if (!s) + s = &init; + + int duration = LIRC_VALUE(*sample); + + if (LIRC_IS_FREQUENCY(*sample)) { + // ignore + } else if (s->state == STATE_INACTIVE) { + if (LIRC_IS_PULSE(*sample) && eq_margin(header_pulse, duration, 100)) { + s->bits = 0; + s->state = STATE_HEADER_SPACE; + s->count = 0; + } + } else if (s->state == STATE_HEADER_SPACE) { + if (LIRC_IS_SPACE(*sample) && eq_margin(header_space, duration, 200)) + s->state = STATE_LEADING_PULSE; + else + s->state = STATE_INACTIVE; + } else if (s->state == STATE_LEADING_PULSE) { + if (LIRC_IS_PULSE(*sample) && eq_margin(leader_pulse, duration, 100)) + s->state = STATE_BITS_SPACE; + else + s->state = STATE_INACTIVE; + } else if (s->state == STATE_BITS_SPACE) { + s->last_space = duration; + s->state = STATE_BITS_PULSE; + } else if (s->state == STATE_BITS_PULSE) { + int t = -1; + if (eq_margin(s->last_space, (472), (150)) && + eq_margin(duration, (583), (150))) + t = 0; + if (eq_margin(s->last_space, (1139), (150)) && + eq_margin(duration, (583), (150))) + t = 1; + if (eq_margin(s->last_space, (1806), (150)) && + eq_margin(duration, (583), (150))) + t = 2; + if (eq_margin(s->last_space, (2200), (150)) && + eq_margin(duration, (1139), (150))) + t = 3; + if (t < 0) { + s->state = STATE_INACTIVE; + } else { + s->bits <<= 2; + switch (t) { + case 3: s->bits |= 0; break; + case 2: s->bits |= 3; break; + case 1: s->bits |= 2; break; + case 0: s->bits |= 1; break; + } + s->count += 2; + if (s->count == 16) { + bpf_rc_keydown(sample, 0x40, s->bits, 0); + s->state = STATE_INACTIVE; + } else { + s->state = STATE_BITS_SPACE; + } + } + } + + if (s == &init) + bpf_map_update_elem(&decoder_state_map, &key, s, BPF_NOEXIST); + + return 0; +} + +char _license[] SEC("license") = "GPL"; + diff --git a/utils/keytable/rc_keymaps_bpf/RP75_LCD.toml b/utils/keytable/rc_keymaps_bpf/RP75_LCD.toml new file mode 100644 index 00000000..53df49ea --- /dev/null +++ b/utils/keytable/rc_keymaps_bpf/RP75_LCD.toml @@ -0,0 +1,45 @@ +name = "grundig" +protocol = "grundig" +[grundig] +header_pulse = 1244 +[grundig.scancodes] +0x01 = "KEY_1" +0x02 = "KEY_2" +0x03 = "KEY_3" +0x04 = "KEY_4" +0x05 = "KEY_5" +0x06 = "KEY_6" +0x07 = "KEY_7" +0x08 = "KEY_8" +0x09 = "KEY_9" +0x31 = "KEY_0" +0x16 = "KEY_DELETE" +0x0a = "KEY_MODE" +0x0c = "KEY_VOLUMEUP" +0x18 = "KEY_VOLUMEDOWN" +0x0b = "KEY_CHANNELUP" +0x15 = "KEY_CHANNELDOWN" +0x0d = "KEY_PAGEUP" +0x13 = "KEY_PAGEDOWN" +0x46 = "KEY_FASTFORWARD" +0x43 = "KEY_REWIND" +0x44 = "KEY_PLAYPAUSE" +0x45 = "KEY_STOP" +0x49 = "KEY_OK" +0x47 = "KEY_UP" +0x4b = "KEY_DOWN" +0x48 = "KEY_LEFT" +0x4a = "KEY_RIGHT" +0x4d = "KEY_MENU" +0x56 = "KEY_APPSELECT" +0x4c = "KEY_BACK" +0x1e = "KEY_INFO" +0x4e = "KEY_F1" +0x4f = "KEY_F2" +0x50 = "KEY_F3" +0x51 = "KEY_F4" +0x1c = "KEY_AUDIO" +0x12 = "KEY_MUTE" +0x11 = "KEY_DOT" +0x1d = "KEY_SETUP" +0x40 = "KEY_POWER" diff --git a/v4l-utils.spec.in b/v4l-utils.spec.in index f7be08b3..bae31bad 100644 --- a/v4l-utils.spec.in +++ b/v4l-utils.spec.in @@ -10,7 +10,7 @@ Source0: http://linuxtv.org/downloads/v4l-utils/v4l-utils-%{version}.tar. Source1: qv4l2.desktop Source2: qv4l2.svg BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n) -BuildRequires: qt4-devel libsysfs-devel kernel-headers desktop-file-utils elfutils-libelf-devel +BuildRequires: qt4-devel libsysfs-devel kernel-headers desktop-file-utils elfutils-libelf-devel clang llvm # For /etc/udev/rules.d ownership Requires: udev Requires: libv4l = %{version}-%{release}