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authorGrant Likely <grant.likely@secretlab.ca>2010-05-22 10:36:56 +0400
committerGrant Likely <grant.likely@secretlab.ca>2010-05-22 10:36:56 +0400
commitcf9b59e9d3e008591d1f54830f570982bb307a0d (patch)
tree113478ce8fd8c832ba726ffdf59b82cb46356476 /drivers/media/IR/ir-core-priv.h
parent44504b2bebf8b5823c59484e73096a7d6574471d (diff)
parentf4b87dee923342505e1ddba8d34ce9de33e75050 (diff)
downloadlinux-cf9b59e9d3e008591d1f54830f570982bb307a0d.tar.xz
Merge remote branch 'origin' into secretlab/next-devicetree
Merging in current state of Linus' tree to deal with merge conflicts and build failures in vio.c after merge. Conflicts: drivers/i2c/busses/i2c-cpm.c drivers/i2c/busses/i2c-mpc.c drivers/net/gianfar.c Also fixed up one line in arch/powerpc/kernel/vio.c to use the correct node pointer. Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'drivers/media/IR/ir-core-priv.h')
-rw-r--r--drivers/media/IR/ir-core-priv.h126
1 files changed, 126 insertions, 0 deletions
diff --git a/drivers/media/IR/ir-core-priv.h b/drivers/media/IR/ir-core-priv.h
new file mode 100644
index 000000000000..9a5e65a471a5
--- /dev/null
+++ b/drivers/media/IR/ir-core-priv.h
@@ -0,0 +1,126 @@
+/*
+ * 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 _IR_RAW_EVENT
+#define _IR_RAW_EVENT
+
+#include <linux/slab.h>
+#include <media/ir-core.h>
+
+struct ir_raw_handler {
+ struct list_head list;
+
+ int (*decode)(struct input_dev *input_dev, struct ir_raw_event event);
+ int (*raw_register)(struct input_dev *input_dev);
+ int (*raw_unregister)(struct input_dev *input_dev);
+};
+
+struct ir_raw_event_ctrl {
+ struct work_struct rx_work; /* for the rx decoding workqueue */
+ 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 input_dev *input_dev; /* pointer to the parent input_dev */
+};
+
+/* 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;
+}
+
+#define TO_US(duration) (((duration) + 500) / 1000)
+#define TO_STR(is_pulse) ((is_pulse) ? "pulse" : "space")
+#define IS_RESET(ev) (ev.duration == 0)
+
+/*
+ * Routines from ir-sysfs.c - Meant to be called only internally inside
+ * ir-core
+ */
+
+int ir_register_class(struct input_dev *input_dev);
+void ir_unregister_class(struct input_dev *input_dev);
+
+/*
+ * Routines from ir-raw-event.c to be used internally and by decoders
+ */
+int ir_raw_event_register(struct input_dev *input_dev);
+void ir_raw_event_unregister(struct input_dev *input_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
+
+#endif /* _IR_RAW_EVENT */