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authorLinus Torvalds <torvalds@linux-foundation.org>2011-01-06 18:32:12 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2011-01-06 18:32:12 -0800
commit9e9bc9736756f25d6c47b4eba0ebf25b20a6f153 (patch)
tree647240f479c5f23910c3e6194d1c35b6ba54d75e /drivers/media/rc/rc-core-priv.h
parent3c0cb7c31c206aaedb967e44b98442bbeb17a6c4 (diff)
parente3c92215198cb6aa00ad38db2780faa6b72e0a3f (diff)
Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6
* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (255 commits) [media] radio-aimslab.c: Fix gcc 4.5+ bug [media] cx25821: Fix compilation breakage due to BKL dependency [media] v4l2-compat-ioctl32: fix compile warning [media] zoran: fix compiler warning [media] tda18218: fix compile warning [media] ngene: fix compile warning [media] DVB: IR support for TechnoTrend CT-3650 [media] cx23885, cimax2.c: Fix case of two CAM insertion irq [media] ir-nec-decoder: fix repeat key issue [media] staging: se401 depends on USB [media] staging: usbvideo/vicam depends on USB [media] soc_camera: Add the ability to bind regulators to soc_camedra devices [media] V4L2: Add a v4l2-subdev (soc-camera) driver for OmniVision OV2640 sensor [media] v4l: soc-camera: switch to .unlocked_ioctl [media] v4l: ov772x: simplify pointer dereference [media] ov9640: fix OmniVision OV9640 sensor driver's priv data retrieving [media] ov9640: use macro to request OmniVision OV9640 sensor private data [media] ivtv-i2c: Fix two warnings [media] staging/lirc: Update lirc TODO files [media] cx88: Remove the obsolete i2c_adapter.id field ...
Diffstat (limited to 'drivers/media/rc/rc-core-priv.h')
-rw-r--r--drivers/media/rc/rc-core-priv.h193
1 files changed, 193 insertions, 0 deletions
diff --git a/drivers/media/rc/rc-core-priv.h b/drivers/media/rc/rc-core-priv.h
new file mode 100644
index 000000000000..873b38789751
--- /dev/null
+++ b/drivers/media/rc/rc-core-priv.h
@@ -0,0 +1,193 @@
+/*
+ * Remote Controller core raw events header
+ *
+ * Copyright (C) 2010 by Mauro Carvalho Chehab <mchehab@redhat.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef _RC_CORE_PRIV
+#define _RC_CORE_PRIV
+
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <media/rc-core.h>
+
+struct ir_raw_handler {
+ struct list_head list;
+
+ u64 protocols; /* which are handled by this handler */
+ int (*decode)(struct rc_dev *dev, struct ir_raw_event event);
+
+ /* These two should only be used by the lirc decoder */
+ int (*raw_register)(struct rc_dev *dev);
+ int (*raw_unregister)(struct rc_dev *dev);
+};
+
+struct ir_raw_event_ctrl {
+ struct list_head list; /* to keep track of raw clients */
+ struct task_struct *thread;
+ spinlock_t lock;
+ struct kfifo kfifo; /* fifo for the pulse/space durations */
+ ktime_t last_event; /* when last event occurred */
+ enum raw_event_type last_type; /* last event type */
+ struct rc_dev *dev; /* pointer to the parent rc_dev */
+ u64 enabled_protocols; /* enabled raw protocol decoders */
+
+ /* raw decoder state follows */
+ struct ir_raw_event prev_ev;
+ struct ir_raw_event this_ev;
+ struct nec_dec {
+ int state;
+ unsigned count;
+ u32 bits;
+ bool is_nec_x;
+ bool necx_repeat;
+ } nec;
+ struct rc5_dec {
+ int state;
+ u32 bits;
+ unsigned count;
+ unsigned wanted_bits;
+ } rc5;
+ struct rc6_dec {
+ int state;
+ u8 header;
+ u32 body;
+ bool toggle;
+ unsigned count;
+ unsigned wanted_bits;
+ } rc6;
+ struct sony_dec {
+ int state;
+ u32 bits;
+ unsigned count;
+ } sony;
+ struct jvc_dec {
+ int state;
+ u16 bits;
+ u16 old_bits;
+ unsigned count;
+ bool first;
+ bool toggle;
+ } jvc;
+ struct rc5_sz_dec {
+ int state;
+ u32 bits;
+ unsigned count;
+ unsigned wanted_bits;
+ } rc5_sz;
+ struct lirc_codec {
+ struct rc_dev *dev;
+ struct lirc_driver *drv;
+ int carrier_low;
+
+ ktime_t gap_start;
+ u64 gap_duration;
+ bool gap;
+ bool send_timeout_reports;
+
+ } lirc;
+};
+
+/* macros for IR decoders */
+static inline bool geq_margin(unsigned d1, unsigned d2, unsigned margin)
+{
+ return d1 > (d2 - margin);
+}
+
+static inline bool eq_margin(unsigned d1, unsigned d2, unsigned margin)
+{
+ return ((d1 > (d2 - margin)) && (d1 < (d2 + margin)));
+}
+
+static inline bool is_transition(struct ir_raw_event *x, struct ir_raw_event *y)
+{
+ return x->pulse != y->pulse;
+}
+
+static inline void decrease_duration(struct ir_raw_event *ev, unsigned duration)
+{
+ if (duration > ev->duration)
+ ev->duration = 0;
+ else
+ ev->duration -= duration;
+}
+
+/* Returns true if event is normal pulse/space event */
+static inline bool is_timing_event(struct ir_raw_event ev)
+{
+ return !ev.carrier_report && !ev.reset;
+}
+
+#define TO_US(duration) DIV_ROUND_CLOSEST((duration), 1000)
+#define TO_STR(is_pulse) ((is_pulse) ? "pulse" : "space")
+
+/*
+ * Routines from rc-raw.c to be used internally and by decoders
+ */
+u64 ir_raw_get_allowed_protocols(void);
+int ir_raw_event_register(struct rc_dev *dev);
+void ir_raw_event_unregister(struct rc_dev *dev);
+int ir_raw_handler_register(struct ir_raw_handler *ir_raw_handler);
+void ir_raw_handler_unregister(struct ir_raw_handler *ir_raw_handler);
+void ir_raw_init(void);
+
+/*
+ * Decoder initialization code
+ *
+ * Those load logic are called during ir-core init, and automatically
+ * loads the compiled decoders for their usage with IR raw events
+ */
+
+/* from ir-nec-decoder.c */
+#ifdef CONFIG_IR_NEC_DECODER_MODULE
+#define load_nec_decode() request_module("ir-nec-decoder")
+#else
+#define load_nec_decode() 0
+#endif
+
+/* from ir-rc5-decoder.c */
+#ifdef CONFIG_IR_RC5_DECODER_MODULE
+#define load_rc5_decode() request_module("ir-rc5-decoder")
+#else
+#define load_rc5_decode() 0
+#endif
+
+/* from ir-rc6-decoder.c */
+#ifdef CONFIG_IR_RC6_DECODER_MODULE
+#define load_rc6_decode() request_module("ir-rc6-decoder")
+#else
+#define load_rc6_decode() 0
+#endif
+
+/* from ir-jvc-decoder.c */
+#ifdef CONFIG_IR_JVC_DECODER_MODULE
+#define load_jvc_decode() request_module("ir-jvc-decoder")
+#else
+#define load_jvc_decode() 0
+#endif
+
+/* from ir-sony-decoder.c */
+#ifdef CONFIG_IR_SONY_DECODER_MODULE
+#define load_sony_decode() request_module("ir-sony-decoder")
+#else
+#define load_sony_decode() 0
+#endif
+
+/* from ir-lirc-codec.c */
+#ifdef CONFIG_IR_LIRC_CODEC_MODULE
+#define load_lirc_codec() request_module("ir-lirc-codec")
+#else
+#define load_lirc_codec() 0
+#endif
+
+
+#endif /* _RC_CORE_PRIV */