From patchwork Fri Oct 29 19:08:17 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?RGF2aWQgSMODwqRyZGVtYW4=?= X-Patchwork-Id: 291092 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id o9TJ8POI007222 for ; Fri, 29 Oct 2010 19:08:26 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761606Ab0J2TIY (ORCPT ); Fri, 29 Oct 2010 15:08:24 -0400 Received: from 1-1-12-13a.han.sth.bostream.se ([82.182.30.168]:59823 "EHLO palpatine.hardeman.nu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761572Ab0J2TIX (ORCPT ); Fri, 29 Oct 2010 15:08:23 -0400 Received: from basil.haag.hardeman.nu (host-88-217-225-61.customer.m-online.net [88.217.225.61]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by palpatine.hardeman.nu (Postfix) with ESMTPSA id 6CE56F04; Fri, 29 Oct 2010 21:08:19 +0200 (CEST) Received: by basil.haag.hardeman.nu (Postfix, from userid 1000) id 04AC41A0F36; Fri, 29 Oct 2010 21:08:18 +0200 (CEST) Subject: [PATCH 5/7] ir-core: merge and rename to rc-core To: linux-media@vger.kernel.org From: David =?utf-8?b?SMOkcmRlbWFu?= Cc: jarod@wilsonet.com, mchehab@infradead.org Date: Fri, 29 Oct 2010 21:08:17 +0200 Message-ID: <20101029190817.11982.54193.stgit@localhost.localdomain> In-Reply-To: <20101029190745.11982.75723.stgit@localhost.localdomain> References: <20101029190745.11982.75723.stgit@localhost.localdomain> User-Agent: StGit/0.15 MIME-Version: 1.0 Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.3 (demeter1.kernel.org [140.211.167.41]); Fri, 29 Oct 2010 19:08:26 +0000 (UTC) diff --git a/drivers/media/IR/Makefile b/drivers/media/IR/Makefile index 38873cf..1eb24e6 100644 --- a/drivers/media/IR/Makefile +++ b/drivers/media/IR/Makefile @@ -1,9 +1,9 @@ ir-common-objs := ir-functions.o -ir-core-objs := ir-keytable.o ir-sysfs.o ir-raw-event.o rc-map.o +rc-core-objs := rc-main.o rc-raw.o obj-y += keymaps/ -obj-$(CONFIG_IR_CORE) += ir-core.o +obj-$(CONFIG_IR_CORE) += rc-core.o obj-$(CONFIG_IR_LEGACY) += ir-common.o obj-$(CONFIG_LIRC) += lirc_dev.o obj-$(CONFIG_IR_NEC_DECODER) += ir-nec-decoder.o diff --git a/drivers/media/IR/ir-core-priv.h b/drivers/media/IR/ir-core-priv.h index 81c936b..4be0757 100644 --- a/drivers/media/IR/ir-core-priv.h +++ b/drivers/media/IR/ir-core-priv.h @@ -129,14 +129,6 @@ static inline bool is_timing_event(struct ir_raw_event ev) #define TO_US(duration) DIV_ROUND_CLOSEST((duration), 1000) #define TO_STR(is_pulse) ((is_pulse) ? "pulse" : "space") -/* - * Routines from ir-sysfs.c - Meant to be called only internally inside - * ir-core - */ -int ir_register_input(struct input_dev *input_dev); - -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 @@ -148,8 +140,6 @@ 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); -int ir_rcmap_init(void); -void ir_rcmap_cleanup(void); /* * Decoder initialization code * diff --git a/drivers/media/IR/ir-keytable.c b/drivers/media/IR/ir-keytable.c deleted file mode 100644 index f869799..0000000 --- a/drivers/media/IR/ir-keytable.c +++ /dev/null @@ -1,764 +0,0 @@ -/* ir-keytable.c - handle IR scancode->keycode tables - * - * Copyright (C) 2009 by Mauro Carvalho Chehab - * - * 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. - */ - - -#include -#include -#include "ir-core-priv.h" - -/* Sizes are in bytes, 256 bytes allows for 32 entries on x64 */ -#define IR_TAB_MIN_SIZE 256 -#define IR_TAB_MAX_SIZE 8192 - -/* FIXME: IR_KEYPRESS_TIMEOUT should be protocol specific */ -#define IR_KEYPRESS_TIMEOUT 250 - -/** - * ir_create_table() - initializes a scancode table - * @rc_tab: the ir_scancode_table to initialize - * @name: name to assign to the table - * @ir_type: ir type to assign to the new table - * @size: initial size of the table - * @return: zero on success or a negative error code - * - * This routine will initialize the ir_scancode_table and will allocate - * memory to hold at least the specified number elements. - */ -static int ir_create_table(struct ir_scancode_table *rc_tab, - const char *name, u64 ir_type, size_t size) -{ - rc_tab->name = name; - rc_tab->ir_type = ir_type; - rc_tab->alloc = roundup_pow_of_two(size * sizeof(struct ir_scancode)); - rc_tab->size = rc_tab->alloc / sizeof(struct ir_scancode); - rc_tab->scan = kmalloc(rc_tab->alloc, GFP_KERNEL); - if (!rc_tab->scan) - return -ENOMEM; - - IR_dprintk(1, "Allocated space for %u keycode entries (%u bytes)\n", - rc_tab->size, rc_tab->alloc); - return 0; -} - -/** - * ir_free_table() - frees memory allocated by a scancode table - * @rc_tab: the table whose mappings need to be freed - * - * This routine will free memory alloctaed for key mappings used by given - * scancode table. - */ -static void ir_free_table(struct ir_scancode_table *rc_tab) -{ - rc_tab->size = 0; - kfree(rc_tab->scan); - rc_tab->scan = NULL; -} - -/** - * ir_resize_table() - resizes a scancode table if necessary - * @rc_tab: the ir_scancode_table to resize - * @gfp_flags: gfp flags to use when allocating memory - * @return: zero on success or a negative error code - * - * This routine will shrink the ir_scancode_table if it has lots of - * unused entries and grow it if it is full. - */ -static int ir_resize_table(struct ir_scancode_table *rc_tab, gfp_t gfp_flags) -{ - unsigned int oldalloc = rc_tab->alloc; - unsigned int newalloc = oldalloc; - struct ir_scancode *oldscan = rc_tab->scan; - struct ir_scancode *newscan; - - if (rc_tab->size == rc_tab->len) { - /* All entries in use -> grow keytable */ - if (rc_tab->alloc >= IR_TAB_MAX_SIZE) - return -ENOMEM; - - newalloc *= 2; - IR_dprintk(1, "Growing table to %u bytes\n", newalloc); - } - - if ((rc_tab->len * 3 < rc_tab->size) && (oldalloc > IR_TAB_MIN_SIZE)) { - /* Less than 1/3 of entries in use -> shrink keytable */ - newalloc /= 2; - IR_dprintk(1, "Shrinking table to %u bytes\n", newalloc); - } - - if (newalloc == oldalloc) - return 0; - - newscan = kmalloc(newalloc, gfp_flags); - if (!newscan) { - IR_dprintk(1, "Failed to kmalloc %u bytes\n", newalloc); - return -ENOMEM; - } - - memcpy(newscan, rc_tab->scan, rc_tab->len * sizeof(struct ir_scancode)); - rc_tab->scan = newscan; - rc_tab->alloc = newalloc; - rc_tab->size = rc_tab->alloc / sizeof(struct ir_scancode); - kfree(oldscan); - return 0; -} - -/** - * ir_update_mapping() - set a keycode in the scancode->keycode table - * @dev: the struct input_dev device descriptor - * @rc_tab: scancode table to be adjusted - * @index: index of the mapping that needs to be updated - * @keycode: the desired keycode - * @return: previous keycode assigned to the mapping - * - * This routine is used to update scancode->keycopde mapping at given - * position. - */ -static unsigned int ir_update_mapping(struct input_dev *dev, - struct ir_scancode_table *rc_tab, - unsigned int index, - unsigned int new_keycode) -{ - int old_keycode = rc_tab->scan[index].keycode; - int i; - - /* Did the user wish to remove the mapping? */ - if (new_keycode == KEY_RESERVED || new_keycode == KEY_UNKNOWN) { - IR_dprintk(1, "#%d: Deleting scan 0x%04x\n", - index, rc_tab->scan[index].scancode); - rc_tab->len--; - memmove(&rc_tab->scan[index], &rc_tab->scan[index+ 1], - (rc_tab->len - index) * sizeof(struct ir_scancode)); - } else { - IR_dprintk(1, "#%d: %s scan 0x%04x with key 0x%04x\n", - index, - old_keycode == KEY_RESERVED ? "New" : "Replacing", - rc_tab->scan[index].scancode, new_keycode); - rc_tab->scan[index].keycode = new_keycode; - __set_bit(new_keycode, dev->keybit); - } - - if (old_keycode != KEY_RESERVED) { - /* A previous mapping was updated... */ - __clear_bit(old_keycode, dev->keybit); - /* ... but another scancode might use the same keycode */ - for (i = 0; i < rc_tab->len; i++) { - if (rc_tab->scan[i].keycode == old_keycode) { - __set_bit(old_keycode, dev->keybit); - break; - } - } - - /* Possibly shrink the keytable, failure is not a problem */ - ir_resize_table(rc_tab, GFP_ATOMIC); - } - - return old_keycode; -} - -/** - * ir_locate_scancode() - set a keycode in the scancode->keycode table - * @ir_dev: the struct ir_input_dev device descriptor - * @rc_tab: scancode table to be searched - * @scancode: the desired scancode - * @resize: controls whether we allowed to resize the table to - * accomodate not yet present scancodes - * @return: index of the mapping containing scancode in question - * or -1U in case of failure. - * - * This routine is used to locate given scancode in ir_scancode_table. - * If scancode is not yet present the routine will allocate a new slot - * for it. - */ -static unsigned int ir_establish_scancode(struct ir_input_dev *ir_dev, - struct ir_scancode_table *rc_tab, - unsigned int scancode, - bool resize) -{ - unsigned int i; - - /* - * Unfortunately, some hardware-based IR decoders don't provide - * all bits for the complete IR code. In general, they provide only - * the command part of the IR code. Yet, as it is possible to replace - * the provided IR with another one, it is needed to allow loading - * IR tables from other remotes. So, - */ - if (ir_dev->props && ir_dev->props->scanmask) - scancode &= ir_dev->props->scanmask; - - /* First check if we already have a mapping for this ir command */ - for (i = 0; i < rc_tab->len; i++) { - if (rc_tab->scan[i].scancode == scancode) - return i; - - /* Keytable is sorted from lowest to highest scancode */ - if (rc_tab->scan[i].scancode >= scancode) - break; - } - - /* No previous mapping found, we might need to grow the table */ - if (rc_tab->size == rc_tab->len) { - if (!resize || ir_resize_table(rc_tab, GFP_ATOMIC)) - return -1U; - } - - /* i is the proper index to insert our new keycode */ - if (i < rc_tab->len) - memmove(&rc_tab->scan[i + 1], &rc_tab->scan[i], - (rc_tab->len - i) * sizeof(struct ir_scancode)); - rc_tab->scan[i].scancode = scancode; - rc_tab->scan[i].keycode = KEY_RESERVED; - rc_tab->len++; - - return i; -} - -/** - * ir_setkeycode() - set a keycode in the scancode->keycode table - * @dev: the struct input_dev device descriptor - * @scancode: the desired scancode - * @keycode: result - * @return: -EINVAL if the keycode could not be inserted, otherwise zero. - * - * This routine is used to handle evdev EVIOCSKEY ioctl. - */ -static int ir_setkeycode(struct input_dev *dev, - const struct input_keymap_entry *ke, - unsigned int *old_keycode) -{ - struct ir_input_dev *ir_dev = input_get_drvdata(dev); - struct ir_scancode_table *rc_tab = &ir_dev->rc_tab; - unsigned int index; - unsigned int scancode; - int retval; - unsigned long flags; - - spin_lock_irqsave(&rc_tab->lock, flags); - - if (ke->flags & INPUT_KEYMAP_BY_INDEX) { - index = ke->index; - if (index >= rc_tab->len) { - retval = -EINVAL; - goto out; - } - } else { - retval = input_scancode_to_scalar(ke, &scancode); - if (retval) - goto out; - - index = ir_establish_scancode(ir_dev, rc_tab, scancode, true); - if (index >= rc_tab->len) { - retval = -ENOMEM; - goto out; - } - } - - *old_keycode = ir_update_mapping(dev, rc_tab, index, ke->keycode); - -out: - spin_unlock_irqrestore(&rc_tab->lock, flags); - return retval; -} - -/** - * ir_setkeytable() - sets several entries in the scancode->keycode table - * @dev: the struct input_dev device descriptor - * @to: the struct ir_scancode_table to copy entries to - * @from: the struct ir_scancode_table to copy entries from - * @return: -ENOMEM if all keycodes could not be inserted, otherwise zero. - * - * This routine is used to handle table initialization. - */ -static int ir_setkeytable(struct ir_input_dev *ir_dev, - const struct ir_scancode_table *from) -{ - struct ir_scancode_table *rc_tab = &ir_dev->rc_tab; - unsigned int i, index; - int rc; - - rc = ir_create_table(&ir_dev->rc_tab, - from->name, from->ir_type, from->size); - if (rc) - return rc; - - IR_dprintk(1, "Allocated space for %u keycode entries (%u bytes)\n", - rc_tab->size, rc_tab->alloc); - - for (i = 0; i < from->size; i++) { - index = ir_establish_scancode(ir_dev, rc_tab, - from->scan[i].scancode, false); - if (index >= rc_tab->len) { - rc = -ENOMEM; - break; - } - - ir_update_mapping(ir_dev->input_dev, rc_tab, index, - from->scan[i].keycode); - } - - if (rc) - ir_free_table(rc_tab); - - return rc; -} - -/** - * ir_lookup_by_scancode() - locate mapping by scancode - * @rc_tab: the &struct ir_scancode_table to search - * @scancode: scancode to look for in the table - * @return: index in the table, -1U if not found - * - * This routine performs binary search in RC keykeymap table for - * given scancode. - */ -static unsigned int ir_lookup_by_scancode(const struct ir_scancode_table *rc_tab, - unsigned int scancode) -{ - unsigned int start = 0; - unsigned int end = rc_tab->len - 1; - unsigned int mid; - - while (start <= end) { - mid = (start + end) / 2; - if (rc_tab->scan[mid].scancode < scancode) - start = mid + 1; - else if (rc_tab->scan[mid].scancode > scancode) - end = mid - 1; - else - return mid; - } - - return -1U; -} - -/** - * ir_getkeycode() - get a keycode from the scancode->keycode table - * @dev: the struct input_dev device descriptor - * @scancode: the desired scancode - * @keycode: used to return the keycode, if found, or KEY_RESERVED - * @return: always returns zero. - * - * This routine is used to handle evdev EVIOCGKEY ioctl. - */ -static int ir_getkeycode(struct input_dev *dev, - struct input_keymap_entry *ke) -{ - struct ir_input_dev *ir_dev = input_get_drvdata(dev); - struct ir_scancode_table *rc_tab = &ir_dev->rc_tab; - struct ir_scancode *entry; - unsigned long flags; - unsigned int index; - unsigned int scancode; - int retval; - - spin_lock_irqsave(&rc_tab->lock, flags); - - if (ke->flags & INPUT_KEYMAP_BY_INDEX) { - index = ke->index; - } else { - retval = input_scancode_to_scalar(ke, &scancode); - if (retval) - goto out; - - index = ir_lookup_by_scancode(rc_tab, scancode); - } - - if (index >= rc_tab->len) { - if (!(ke->flags & INPUT_KEYMAP_BY_INDEX)) - IR_dprintk(1, "unknown key for scancode 0x%04x\n", - scancode); - retval = -EINVAL; - goto out; - } - - entry = &rc_tab->scan[index]; - - ke->index = index; - ke->keycode = entry->keycode; - ke->len = sizeof(entry->scancode); - memcpy(ke->scancode, &entry->scancode, sizeof(entry->scancode)); - -out: - spin_unlock_irqrestore(&rc_tab->lock, flags); - return retval; -} - -/** - * ir_g_keycode_from_table() - gets the keycode that corresponds to a scancode - * @input_dev: the struct input_dev descriptor of the device - * @scancode: the scancode that we're seeking - * - * This routine is used by the input routines when a key is pressed at the - * IR. The scancode is received and needs to be converted into a keycode. - * If the key is not found, it returns KEY_RESERVED. Otherwise, returns the - * corresponding keycode from the table. - */ -u32 ir_g_keycode_from_table(struct input_dev *dev, u32 scancode) -{ - struct ir_input_dev *ir_dev = input_get_drvdata(dev); - struct ir_scancode_table *rc_tab = &ir_dev->rc_tab; - unsigned int keycode; - unsigned int index; - unsigned long flags; - - spin_lock_irqsave(&rc_tab->lock, flags); - - index = ir_lookup_by_scancode(rc_tab, scancode); - keycode = index < rc_tab->len ? - rc_tab->scan[index].keycode : KEY_RESERVED; - - spin_unlock_irqrestore(&rc_tab->lock, flags); - - if (keycode != KEY_RESERVED) - IR_dprintk(1, "%s: scancode 0x%04x keycode 0x%02x\n", - dev->name, scancode, keycode); - - return keycode; -} -EXPORT_SYMBOL_GPL(ir_g_keycode_from_table); - -/** - * ir_do_keyup() - internal function to signal the release of a keypress - * @ir: the struct ir_input_dev descriptor of the device - * - * This function is used internally to release a keypress, it must be - * called with keylock held. - */ -static void ir_do_keyup(struct ir_input_dev *ir) -{ - if (!ir->keypressed) - return; - - IR_dprintk(1, "keyup key 0x%04x\n", ir->last_keycode); - input_report_key(ir->input_dev, ir->last_keycode, 0); - input_sync(ir->input_dev); - ir->keypressed = false; -} - -/** - * ir_keyup() - generates input event to signal the release of a keypress - * @dev: the struct input_dev descriptor of the device - * - * This routine is used to signal that a key has been released on the - * remote control. - */ -void ir_keyup(struct input_dev *dev) -{ - unsigned long flags; - struct ir_input_dev *ir = input_get_drvdata(dev); - - spin_lock_irqsave(&ir->keylock, flags); - ir_do_keyup(ir); - spin_unlock_irqrestore(&ir->keylock, flags); -} -EXPORT_SYMBOL_GPL(ir_keyup); - -/** - * ir_timer_keyup() - generates a keyup event after a timeout - * @cookie: a pointer to struct ir_input_dev passed to setup_timer() - * - * This routine will generate a keyup event some time after a keydown event - * is generated when no further activity has been detected. - */ -static void ir_timer_keyup(unsigned long cookie) -{ - struct ir_input_dev *ir = (struct ir_input_dev *)cookie; - unsigned long flags; - - /* - * ir->keyup_jiffies is used to prevent a race condition if a - * hardware interrupt occurs at this point and the keyup timer - * event is moved further into the future as a result. - * - * The timer will then be reactivated and this function called - * again in the future. We need to exit gracefully in that case - * to allow the input subsystem to do its auto-repeat magic or - * a keyup event might follow immediately after the keydown. - */ - spin_lock_irqsave(&ir->keylock, flags); - if (time_is_before_eq_jiffies(ir->keyup_jiffies)) - ir_do_keyup(ir); - spin_unlock_irqrestore(&ir->keylock, flags); -} - -/** - * ir_repeat() - notifies the IR core that a key is still pressed - * @dev: the struct input_dev descriptor of the device - * - * This routine is used by IR decoders when a repeat message which does - * not include the necessary bits to reproduce the scancode has been - * received. - */ -void ir_repeat(struct input_dev *dev) -{ - unsigned long flags; - struct ir_input_dev *ir = input_get_drvdata(dev); - - spin_lock_irqsave(&ir->keylock, flags); - - input_event(dev, EV_MSC, MSC_SCAN, ir->last_scancode); - - if (!ir->keypressed) - goto out; - - ir->keyup_jiffies = jiffies + msecs_to_jiffies(IR_KEYPRESS_TIMEOUT); - mod_timer(&ir->timer_keyup, ir->keyup_jiffies); - -out: - spin_unlock_irqrestore(&ir->keylock, flags); -} -EXPORT_SYMBOL_GPL(ir_repeat); - -/** - * ir_do_keydown() - internal function to process a keypress - * @dev: the struct input_dev descriptor of the device - * @scancode: the scancode of the keypress - * @keycode: the keycode of the keypress - * @toggle: the toggle value of the keypress - * - * This function is used internally to register a keypress, it must be - * called with keylock held. - */ -static void ir_do_keydown(struct input_dev *dev, int scancode, - u32 keycode, u8 toggle) -{ - struct ir_input_dev *ir = input_get_drvdata(dev); - - input_event(dev, EV_MSC, MSC_SCAN, scancode); - - /* Repeat event? */ - if (ir->keypressed && - ir->last_scancode == scancode && - ir->last_toggle == toggle) - return; - - /* Release old keypress */ - ir_do_keyup(ir); - - ir->last_scancode = scancode; - ir->last_toggle = toggle; - ir->last_keycode = keycode; - - if (keycode == KEY_RESERVED) - return; - - /* Register a keypress */ - ir->keypressed = true; - IR_dprintk(1, "%s: key down event, key 0x%04x, scancode 0x%04x\n", - dev->name, keycode, scancode); - input_report_key(dev, ir->last_keycode, 1); - input_sync(dev); -} - -/** - * ir_keydown() - generates input event for a key press - * @dev: the struct input_dev descriptor of the device - * @scancode: the scancode that we're seeking - * @toggle: the toggle value (protocol dependent, if the protocol doesn't - * support toggle values, this should be set to zero) - * - * This routine is used by the input routines when a key is pressed at the - * IR. It gets the keycode for a scancode and reports an input event via - * input_report_key(). - */ -void ir_keydown(struct input_dev *dev, int scancode, u8 toggle) -{ - unsigned long flags; - struct ir_input_dev *ir = input_get_drvdata(dev); - u32 keycode = ir_g_keycode_from_table(dev, scancode); - - spin_lock_irqsave(&ir->keylock, flags); - ir_do_keydown(dev, scancode, keycode, toggle); - - if (ir->keypressed) { - ir->keyup_jiffies = jiffies + msecs_to_jiffies(IR_KEYPRESS_TIMEOUT); - mod_timer(&ir->timer_keyup, ir->keyup_jiffies); - } - spin_unlock_irqrestore(&ir->keylock, flags); -} -EXPORT_SYMBOL_GPL(ir_keydown); - -/** - * ir_keydown_notimeout() - generates input event for a key press without - * an automatic keyup event at a later time - * @dev: the struct input_dev descriptor of the device - * @scancode: the scancode that we're seeking - * @toggle: the toggle value (protocol dependent, if the protocol doesn't - * support toggle values, this should be set to zero) - * - * This routine is used by the input routines when a key is pressed at the - * IR. It gets the keycode for a scancode and reports an input event via - * input_report_key(). The driver must manually call ir_keyup() at a later - * stage. - */ -void ir_keydown_notimeout(struct input_dev *dev, int scancode, u8 toggle) -{ - unsigned long flags; - struct ir_input_dev *ir = input_get_drvdata(dev); - u32 keycode = ir_g_keycode_from_table(dev, scancode); - - spin_lock_irqsave(&ir->keylock, flags); - ir_do_keydown(dev, scancode, keycode, toggle); - spin_unlock_irqrestore(&ir->keylock, flags); -} -EXPORT_SYMBOL_GPL(ir_keydown_notimeout); - -static int ir_open(struct input_dev *input_dev) -{ - struct ir_input_dev *ir_dev = input_get_drvdata(input_dev); - - return ir_dev->props->open(ir_dev->props->priv); -} - -static void ir_close(struct input_dev *input_dev) -{ - struct ir_input_dev *ir_dev = input_get_drvdata(input_dev); - - ir_dev->props->close(ir_dev->props->priv); -} - -/** - * __ir_input_register() - sets the IR keycode table and add the handlers - * for keymap table get/set - * @input_dev: the struct input_dev descriptor of the device - * @rc_tab: the struct ir_scancode_table table of scancode/keymap - * - * This routine is used to initialize the input infrastructure - * to work with an IR. - * It will register the input/evdev interface for the device and - * register the syfs code for IR class - */ -int __ir_input_register(struct input_dev *input_dev, - const struct ir_scancode_table *rc_tab, - struct ir_dev_props *props, - const char *driver_name) -{ - struct ir_input_dev *ir_dev; - int rc; - - if (rc_tab->scan == NULL || !rc_tab->size) - return -EINVAL; - - ir_dev = kzalloc(sizeof(*ir_dev), GFP_KERNEL); - if (!ir_dev) - return -ENOMEM; - - ir_dev->driver_name = kasprintf(GFP_KERNEL, "%s", driver_name); - if (!ir_dev->driver_name) { - rc = -ENOMEM; - goto out_dev; - } - - input_dev->getkeycode_new = ir_getkeycode; - input_dev->setkeycode_new = ir_setkeycode; - input_set_drvdata(input_dev, ir_dev); - ir_dev->input_dev = input_dev; - - spin_lock_init(&ir_dev->rc_tab.lock); - spin_lock_init(&ir_dev->keylock); - setup_timer(&ir_dev->timer_keyup, ir_timer_keyup, (unsigned long)ir_dev); - - if (props) { - ir_dev->props = props; - if (props->open) - input_dev->open = ir_open; - if (props->close) - input_dev->close = ir_close; - } - - set_bit(EV_KEY, input_dev->evbit); - set_bit(EV_REP, input_dev->evbit); - set_bit(EV_MSC, input_dev->evbit); - set_bit(MSC_SCAN, input_dev->mscbit); - - rc = ir_setkeytable(ir_dev, rc_tab); - if (rc) - goto out_name; - - rc = ir_register_class(input_dev); - if (rc < 0) - goto out_table; - - if (ir_dev->props) - if (ir_dev->props->driver_type == RC_DRIVER_IR_RAW) { - rc = ir_raw_event_register(input_dev); - if (rc < 0) - goto out_event; - } - - rc = ir_register_input(input_dev); - if (rc < 0) - goto out_event; - - IR_dprintk(1, "Registered input device on %s for %s remote%s.\n", - driver_name, rc_tab->name, - (ir_dev->props && ir_dev->props->driver_type == RC_DRIVER_IR_RAW) ? - " in raw mode" : ""); - - /* - * Default delay of 250ms is too short for some protocols, expecially - * since the timeout is currently set to 250ms. Increase it to 500ms, - * to avoid wrong repetition of the keycodes. - */ - input_dev->rep[REP_DELAY] = 500; - - return 0; - -out_event: - ir_unregister_class(input_dev); -out_table: - ir_free_table(&ir_dev->rc_tab); -out_name: - kfree(ir_dev->driver_name); -out_dev: - kfree(ir_dev); - return rc; -} -EXPORT_SYMBOL_GPL(__ir_input_register); - -/** - * ir_input_unregister() - unregisters IR and frees resources - * @input_dev: the struct input_dev descriptor of the device - - * This routine is used to free memory and de-register interfaces. - */ -void ir_input_unregister(struct input_dev *input_dev) -{ - struct ir_input_dev *ir_dev = input_get_drvdata(input_dev); - - if (!ir_dev) - return; - - IR_dprintk(1, "Freed keycode table\n"); - - del_timer_sync(&ir_dev->timer_keyup); - if (ir_dev->props) - if (ir_dev->props->driver_type == RC_DRIVER_IR_RAW) - ir_raw_event_unregister(input_dev); - - ir_free_table(&ir_dev->rc_tab); - - ir_unregister_class(input_dev); - - kfree(ir_dev->driver_name); - kfree(ir_dev); -} -EXPORT_SYMBOL_GPL(ir_input_unregister); - -int ir_core_debug; /* ir_debug level (0,1,2) */ -EXPORT_SYMBOL_GPL(ir_core_debug); -module_param_named(debug, ir_core_debug, int, 0644); - -MODULE_AUTHOR("Mauro Carvalho Chehab "); -MODULE_LICENSE("GPL"); diff --git a/drivers/media/IR/ir-raw-event.c b/drivers/media/IR/ir-raw-event.c deleted file mode 100644 index a06a07e..0000000 --- a/drivers/media/IR/ir-raw-event.c +++ /dev/null @@ -1,382 +0,0 @@ -/* ir-raw-event.c - handle IR Pulse/Space event - * - * Copyright (C) 2010 by Mauro Carvalho Chehab - * - * 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. - */ - -#include -#include -#include -#include -#include "ir-core-priv.h" - -/* Define the max number of pulse/space transitions to buffer */ -#define MAX_IR_EVENT_SIZE 512 - -/* Used to keep track of IR raw clients, protected by ir_raw_handler_lock */ -static LIST_HEAD(ir_raw_client_list); - -/* Used to handle IR raw handler extensions */ -static DEFINE_MUTEX(ir_raw_handler_lock); -static LIST_HEAD(ir_raw_handler_list); -static u64 available_protocols; - -#ifdef MODULE -/* Used to load the decoders */ -static struct work_struct wq_load; -#endif - -static int ir_raw_event_thread(void *data) -{ - struct ir_raw_event ev; - struct ir_raw_handler *handler; - struct ir_raw_event_ctrl *raw = (struct ir_raw_event_ctrl *)data; - int retval; - - while (!kthread_should_stop()) { - - spin_lock_irq(&raw->lock); - retval = kfifo_out(&raw->kfifo, &ev, sizeof(ev)); - - if (!retval) { - set_current_state(TASK_INTERRUPTIBLE); - - if (kthread_should_stop()) - set_current_state(TASK_RUNNING); - - spin_unlock_irq(&raw->lock); - schedule(); - continue; - } - - spin_unlock_irq(&raw->lock); - - - BUG_ON(retval != sizeof(ev)); - - mutex_lock(&ir_raw_handler_lock); - list_for_each_entry(handler, &ir_raw_handler_list, list) - handler->decode(raw->input_dev, ev); - raw->prev_ev = ev; - mutex_unlock(&ir_raw_handler_lock); - } - - return 0; -} - -/** - * ir_raw_event_store() - pass a pulse/space duration to the raw ir decoders - * @input_dev: the struct input_dev device descriptor - * @ev: the struct ir_raw_event descriptor of the pulse/space - * - * This routine (which may be called from an interrupt context) stores a - * pulse/space duration for the raw ir decoding state machines. Pulses are - * signalled as positive values and spaces as negative values. A zero value - * will reset the decoding state machines. - */ -int ir_raw_event_store(struct input_dev *input_dev, struct ir_raw_event *ev) -{ - struct ir_input_dev *ir = input_get_drvdata(input_dev); - - if (!ir->raw) - return -EINVAL; - - IR_dprintk(2, "sample: (%05dus %s)\n", - TO_US(ev->duration), TO_STR(ev->pulse)); - - if (kfifo_in(&ir->raw->kfifo, ev, sizeof(*ev)) != sizeof(*ev)) - return -ENOMEM; - - return 0; -} -EXPORT_SYMBOL_GPL(ir_raw_event_store); - -/** - * ir_raw_event_store_edge() - notify raw ir decoders of the start of a pulse/space - * @input_dev: the struct input_dev device descriptor - * @type: the type of the event that has occurred - * - * This routine (which may be called from an interrupt context) is used to - * store the beginning of an ir pulse or space (or the start/end of ir - * reception) for the raw ir decoding state machines. This is used by - * hardware which does not provide durations directly but only interrupts - * (or similar events) on state change. - */ -int ir_raw_event_store_edge(struct input_dev *input_dev, enum raw_event_type type) -{ - struct ir_input_dev *ir = input_get_drvdata(input_dev); - ktime_t now; - s64 delta; /* ns */ - struct ir_raw_event ev; - int rc = 0; - - if (!ir->raw) - return -EINVAL; - - now = ktime_get(); - delta = ktime_to_ns(ktime_sub(now, ir->raw->last_event)); - - /* Check for a long duration since last event or if we're - * being called for the first time, note that delta can't - * possibly be negative. - */ - ev.duration = 0; - if (delta > IR_MAX_DURATION || !ir->raw->last_type) - type |= IR_START_EVENT; - else - ev.duration = delta; - - if (type & IR_START_EVENT) - ir_raw_event_reset(input_dev); - else if (ir->raw->last_type & IR_SPACE) { - ev.pulse = false; - rc = ir_raw_event_store(input_dev, &ev); - } else if (ir->raw->last_type & IR_PULSE) { - ev.pulse = true; - rc = ir_raw_event_store(input_dev, &ev); - } else - return 0; - - ir->raw->last_event = now; - ir->raw->last_type = type; - return rc; -} -EXPORT_SYMBOL_GPL(ir_raw_event_store_edge); - -/** - * ir_raw_event_store_with_filter() - pass next pulse/space to decoders with some processing - * @input_dev: the struct input_dev device descriptor - * @type: the type of the event that has occurred - * - * This routine (which may be called from an interrupt context) works - * in similiar manner to ir_raw_event_store_edge. - * This routine is intended for devices with limited internal buffer - * It automerges samples of same type, and handles timeouts - */ -int ir_raw_event_store_with_filter(struct input_dev *input_dev, - struct ir_raw_event *ev) -{ - struct ir_input_dev *ir = input_get_drvdata(input_dev); - struct ir_raw_event_ctrl *raw = ir->raw; - - if (!raw || !ir->props) - return -EINVAL; - - /* Ignore spaces in idle mode */ - if (ir->idle && !ev->pulse) - return 0; - else if (ir->idle) - ir_raw_event_set_idle(input_dev, false); - - if (!raw->this_ev.duration) { - raw->this_ev = *ev; - } else if (ev->pulse == raw->this_ev.pulse) { - raw->this_ev.duration += ev->duration; - } else { - ir_raw_event_store(input_dev, &raw->this_ev); - raw->this_ev = *ev; - } - - /* Enter idle mode if nessesary */ - if (!ev->pulse && ir->props->timeout && - raw->this_ev.duration >= ir->props->timeout) { - ir_raw_event_set_idle(input_dev, true); - } - return 0; -} -EXPORT_SYMBOL_GPL(ir_raw_event_store_with_filter); - -/** - * ir_raw_event_set_idle() - hint the ir core if device is receiving - * IR data or not - * @input_dev: the struct input_dev device descriptor - * @idle: the hint value - */ -void ir_raw_event_set_idle(struct input_dev *input_dev, bool idle) -{ - struct ir_input_dev *ir = input_get_drvdata(input_dev); - struct ir_raw_event_ctrl *raw = ir->raw; - - if (!ir->props || !ir->raw) - return; - - IR_dprintk(2, "%s idle mode\n", idle ? "enter" : "leave"); - - if (idle) { - raw->this_ev.timeout = true; - ir_raw_event_store(input_dev, &raw->this_ev); - init_ir_raw_event(&raw->this_ev); - } - - if (ir->props->s_idle) - ir->props->s_idle(ir->props->priv, idle); - ir->idle = idle; -} -EXPORT_SYMBOL_GPL(ir_raw_event_set_idle); - -/** - * ir_raw_event_handle() - schedules the decoding of stored ir data - * @input_dev: the struct input_dev device descriptor - * - * This routine will signal the workqueue to start decoding stored ir data. - */ -void ir_raw_event_handle(struct input_dev *input_dev) -{ - struct ir_input_dev *ir = input_get_drvdata(input_dev); - unsigned long flags; - - if (!ir->raw) - return; - - spin_lock_irqsave(&ir->raw->lock, flags); - wake_up_process(ir->raw->thread); - spin_unlock_irqrestore(&ir->raw->lock, flags); -} -EXPORT_SYMBOL_GPL(ir_raw_event_handle); - -/* used internally by the sysfs interface */ -u64 -ir_raw_get_allowed_protocols() -{ - u64 protocols; - mutex_lock(&ir_raw_handler_lock); - protocols = available_protocols; - mutex_unlock(&ir_raw_handler_lock); - return protocols; -} - -/* - * Used to (un)register raw event clients - */ -int ir_raw_event_register(struct input_dev *input_dev) -{ - struct ir_input_dev *ir = input_get_drvdata(input_dev); - int rc; - struct ir_raw_handler *handler; - - ir->raw = kzalloc(sizeof(*ir->raw), GFP_KERNEL); - if (!ir->raw) - return -ENOMEM; - - ir->raw->input_dev = input_dev; - - ir->raw->enabled_protocols = ~0; - rc = kfifo_alloc(&ir->raw->kfifo, sizeof(s64) * MAX_IR_EVENT_SIZE, - GFP_KERNEL); - if (rc < 0) { - kfree(ir->raw); - ir->raw = NULL; - return rc; - } - - spin_lock_init(&ir->raw->lock); - ir->raw->thread = kthread_run(ir_raw_event_thread, ir->raw, - "rc%u", (unsigned int)ir->devno); - - if (IS_ERR(ir->raw->thread)) { - int ret = PTR_ERR(ir->raw->thread); - - kfree(ir->raw); - ir->raw = NULL; - return ret; - } - - mutex_lock(&ir_raw_handler_lock); - list_add_tail(&ir->raw->list, &ir_raw_client_list); - list_for_each_entry(handler, &ir_raw_handler_list, list) - if (handler->raw_register) - handler->raw_register(ir->raw->input_dev); - mutex_unlock(&ir_raw_handler_lock); - - return 0; -} - -void ir_raw_event_unregister(struct input_dev *input_dev) -{ - struct ir_input_dev *ir = input_get_drvdata(input_dev); - struct ir_raw_handler *handler; - - if (!ir->raw) - return; - - kthread_stop(ir->raw->thread); - - mutex_lock(&ir_raw_handler_lock); - list_del(&ir->raw->list); - list_for_each_entry(handler, &ir_raw_handler_list, list) - if (handler->raw_unregister) - handler->raw_unregister(ir->raw->input_dev); - mutex_unlock(&ir_raw_handler_lock); - - kfifo_free(&ir->raw->kfifo); - kfree(ir->raw); - ir->raw = NULL; -} - -/* - * Extension interface - used to register the IR decoders - */ - -int ir_raw_handler_register(struct ir_raw_handler *ir_raw_handler) -{ - struct ir_raw_event_ctrl *raw; - - mutex_lock(&ir_raw_handler_lock); - list_add_tail(&ir_raw_handler->list, &ir_raw_handler_list); - if (ir_raw_handler->raw_register) - list_for_each_entry(raw, &ir_raw_client_list, list) - ir_raw_handler->raw_register(raw->input_dev); - available_protocols |= ir_raw_handler->protocols; - mutex_unlock(&ir_raw_handler_lock); - - return 0; -} -EXPORT_SYMBOL(ir_raw_handler_register); - -void ir_raw_handler_unregister(struct ir_raw_handler *ir_raw_handler) -{ - struct ir_raw_event_ctrl *raw; - - mutex_lock(&ir_raw_handler_lock); - list_del(&ir_raw_handler->list); - if (ir_raw_handler->raw_unregister) - list_for_each_entry(raw, &ir_raw_client_list, list) - ir_raw_handler->raw_unregister(raw->input_dev); - available_protocols &= ~ir_raw_handler->protocols; - mutex_unlock(&ir_raw_handler_lock); -} -EXPORT_SYMBOL(ir_raw_handler_unregister); - -#ifdef MODULE -static void init_decoders(struct work_struct *work) -{ - /* Load the decoder modules */ - - load_nec_decode(); - load_rc5_decode(); - load_rc6_decode(); - load_jvc_decode(); - load_sony_decode(); - load_lirc_codec(); - - /* If needed, we may later add some init code. In this case, - it is needed to change the CONFIG_MODULE test at ir-core.h - */ -} -#endif - -void ir_raw_init(void) -{ -#ifdef MODULE - INIT_WORK(&wq_load, init_decoders); - schedule_work(&wq_load); -#endif -} diff --git a/drivers/media/IR/ir-sysfs.c b/drivers/media/IR/ir-sysfs.c deleted file mode 100644 index 38423a8..0000000 --- a/drivers/media/IR/ir-sysfs.c +++ /dev/null @@ -1,362 +0,0 @@ -/* ir-sysfs.c - sysfs interface for RC devices (/sys/class/rc) - * - * Copyright (C) 2009-2010 by Mauro Carvalho Chehab - * - * 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. - */ - -#include -#include -#include -#include "ir-core-priv.h" - -#define IRRCV_NUM_DEVICES 256 - -/* bit array to represent IR sysfs device number */ -static unsigned long ir_core_dev_number; - -/* class for /sys/class/rc */ -static char *ir_devnode(struct device *dev, mode_t *mode) -{ - return kasprintf(GFP_KERNEL, "rc/%s", dev_name(dev)); -} - -static struct class ir_input_class = { - .name = "rc", - .devnode = ir_devnode, -}; - -static struct { - u64 type; - char *name; -} proto_names[] = { - { IR_TYPE_UNKNOWN, "unknown" }, - { IR_TYPE_RC5, "rc-5" }, - { IR_TYPE_NEC, "nec" }, - { IR_TYPE_RC6, "rc-6" }, - { IR_TYPE_JVC, "jvc" }, - { IR_TYPE_SONY, "sony" }, - { IR_TYPE_RC5_SZ, "rc-5-sz" }, - { IR_TYPE_LIRC, "lirc" }, -}; - -#define PROTO_NONE "none" - -/** - * show_protocols() - shows the current IR protocol(s) - * @d: the device descriptor - * @mattr: the device attribute struct (unused) - * @buf: a pointer to the output buffer - * - * This routine is a callback routine for input read the IR protocol type(s). - * it is trigged by reading /sys/class/rc/rc?/protocols. - * It returns the protocol names of supported protocols. - * Enabled protocols are printed in brackets. - */ -static ssize_t show_protocols(struct device *d, - struct device_attribute *mattr, char *buf) -{ - struct ir_input_dev *ir_dev = dev_get_drvdata(d); - u64 allowed, enabled; - char *tmp = buf; - int i; - - /* Device is being removed */ - if (!ir_dev) - return -EINVAL; - - if (ir_dev->props && ir_dev->props->driver_type == RC_DRIVER_SCANCODE) { - enabled = ir_dev->rc_tab.ir_type; - allowed = ir_dev->props->allowed_protos; - } else if (ir_dev->raw) { - enabled = ir_dev->raw->enabled_protocols; - allowed = ir_raw_get_allowed_protocols(); - } else - return sprintf(tmp, "[builtin]\n"); - - IR_dprintk(1, "allowed - 0x%llx, enabled - 0x%llx\n", - (long long)allowed, - (long long)enabled); - - for (i = 0; i < ARRAY_SIZE(proto_names); i++) { - if (allowed & enabled & proto_names[i].type) - tmp += sprintf(tmp, "[%s] ", proto_names[i].name); - else if (allowed & proto_names[i].type) - tmp += sprintf(tmp, "%s ", proto_names[i].name); - } - - if (tmp != buf) - tmp--; - *tmp = '\n'; - return tmp + 1 - buf; -} - -/** - * store_protocols() - changes the current IR protocol(s) - * @d: the device descriptor - * @mattr: the device attribute struct (unused) - * @buf: a pointer to the input buffer - * @len: length of the input buffer - * - * This routine is a callback routine for changing the IR protocol type. - * It is trigged by writing to /sys/class/rc/rc?/protocols. - * Writing "+proto" will add a protocol to the list of enabled protocols. - * Writing "-proto" will remove a protocol from the list of enabled protocols. - * Writing "proto" will enable only "proto". - * Writing "none" will disable all protocols. - * Returns -EINVAL if an invalid protocol combination or unknown protocol name - * is used, otherwise @len. - */ -static ssize_t store_protocols(struct device *d, - struct device_attribute *mattr, - const char *data, - size_t len) -{ - struct ir_input_dev *ir_dev = dev_get_drvdata(d); - bool enable, disable; - const char *tmp; - u64 type; - u64 mask; - int rc, i, count = 0; - unsigned long flags; - - /* Device is being removed */ - if (!ir_dev) - return -EINVAL; - - if (ir_dev->props && ir_dev->props->driver_type == RC_DRIVER_SCANCODE) - type = ir_dev->rc_tab.ir_type; - else if (ir_dev->raw) - type = ir_dev->raw->enabled_protocols; - else { - IR_dprintk(1, "Protocol switching not supported\n"); - return -EINVAL; - } - - while ((tmp = strsep((char **) &data, " \n")) != NULL) { - if (!*tmp) - break; - - if (*tmp == '+') { - enable = true; - disable = false; - tmp++; - } else if (*tmp == '-') { - enable = false; - disable = true; - tmp++; - } else { - enable = false; - disable = false; - } - - if (!enable && !disable && !strncasecmp(tmp, PROTO_NONE, sizeof(PROTO_NONE))) { - tmp += sizeof(PROTO_NONE); - mask = 0; - count++; - } else { - for (i = 0; i < ARRAY_SIZE(proto_names); i++) { - if (!strncasecmp(tmp, proto_names[i].name, strlen(proto_names[i].name))) { - tmp += strlen(proto_names[i].name); - mask = proto_names[i].type; - break; - } - } - if (i == ARRAY_SIZE(proto_names)) { - IR_dprintk(1, "Unknown protocol: '%s'\n", tmp); - return -EINVAL; - } - count++; - } - - if (enable) - type |= mask; - else if (disable) - type &= ~mask; - else - type = mask; - } - - if (!count) { - IR_dprintk(1, "Protocol not specified\n"); - return -EINVAL; - } - - if (ir_dev->props && ir_dev->props->change_protocol) { - rc = ir_dev->props->change_protocol(ir_dev->props->priv, - type); - if (rc < 0) { - IR_dprintk(1, "Error setting protocols to 0x%llx\n", - (long long)type); - return -EINVAL; - } - } - - if (ir_dev->props && ir_dev->props->driver_type == RC_DRIVER_SCANCODE) { - spin_lock_irqsave(&ir_dev->rc_tab.lock, flags); - ir_dev->rc_tab.ir_type = type; - spin_unlock_irqrestore(&ir_dev->rc_tab.lock, flags); - } else { - ir_dev->raw->enabled_protocols = type; - } - - IR_dprintk(1, "Current protocol(s): 0x%llx\n", - (long long)type); - - return len; -} - -#define ADD_HOTPLUG_VAR(fmt, val...) \ - do { \ - int err = add_uevent_var(env, fmt, val); \ - if (err) \ - return err; \ - } while (0) - -static int rc_dev_uevent(struct device *device, struct kobj_uevent_env *env) -{ - struct ir_input_dev *ir_dev = dev_get_drvdata(device); - - if (ir_dev->rc_tab.name) - ADD_HOTPLUG_VAR("NAME=%s", ir_dev->rc_tab.name); - if (ir_dev->driver_name) - ADD_HOTPLUG_VAR("DRV_NAME=%s", ir_dev->driver_name); - - return 0; -} - -/* - * Static device attribute struct with the sysfs attributes for IR's - */ -static DEVICE_ATTR(protocols, S_IRUGO | S_IWUSR, - show_protocols, store_protocols); - -static struct attribute *rc_dev_attrs[] = { - &dev_attr_protocols.attr, - NULL, -}; - -static struct attribute_group rc_dev_attr_grp = { - .attrs = rc_dev_attrs, -}; - -static const struct attribute_group *rc_dev_attr_groups[] = { - &rc_dev_attr_grp, - NULL -}; - -static struct device_type rc_dev_type = { - .groups = rc_dev_attr_groups, - .uevent = rc_dev_uevent, -}; - -/** - * ir_register_class() - creates the sysfs for /sys/class/rc/rc? - * @input_dev: the struct input_dev descriptor of the device - * - * This routine is used to register the syfs code for IR class - */ -int ir_register_class(struct input_dev *input_dev) -{ - struct ir_input_dev *ir_dev = input_get_drvdata(input_dev); - int devno = find_first_zero_bit(&ir_core_dev_number, - IRRCV_NUM_DEVICES); - - if (unlikely(devno < 0)) - return devno; - - ir_dev->dev.type = &rc_dev_type; - ir_dev->devno = devno; - - ir_dev->dev.class = &ir_input_class; - ir_dev->dev.parent = input_dev->dev.parent; - input_dev->dev.parent = &ir_dev->dev; - dev_set_name(&ir_dev->dev, "rc%d", devno); - dev_set_drvdata(&ir_dev->dev, ir_dev); - return device_register(&ir_dev->dev); -}; - -/** - * ir_register_input - registers ir input device with input subsystem - * @input_dev: the struct input_dev descriptor of the device - */ - -int ir_register_input(struct input_dev *input_dev) -{ - struct ir_input_dev *ir_dev = input_get_drvdata(input_dev); - int rc; - const char *path; - - - rc = input_register_device(input_dev); - if (rc < 0) { - device_del(&ir_dev->dev); - return rc; - } - - __module_get(THIS_MODULE); - - path = kobject_get_path(&ir_dev->dev.kobj, GFP_KERNEL); - printk(KERN_INFO "%s: %s as %s\n", - dev_name(&ir_dev->dev), - input_dev->name ? input_dev->name : "Unspecified device", - path ? path : "N/A"); - kfree(path); - - set_bit(ir_dev->devno, &ir_core_dev_number); - return 0; -} - -/** - * ir_unregister_class() - removes the sysfs for sysfs for - * /sys/class/rc/rc? - * @input_dev: the struct input_dev descriptor of the device - * - * This routine is used to unregister the syfs code for IR class - */ -void ir_unregister_class(struct input_dev *input_dev) -{ - struct ir_input_dev *ir_dev = input_get_drvdata(input_dev); - - input_set_drvdata(input_dev, NULL); - clear_bit(ir_dev->devno, &ir_core_dev_number); - input_unregister_device(input_dev); - device_del(&ir_dev->dev); - - module_put(THIS_MODULE); -} - -/* - * Init/exit code for the module. Basically, creates/removes /sys/class/rc - */ - -static int __init ir_core_init(void) -{ - int rc = class_register(&ir_input_class); - if (rc) { - printk(KERN_ERR "ir_core: unable to register rc class\n"); - return rc; - } - - /* Initialize/load the decoders/keymap code that will be used */ - ir_raw_init(); - ir_rcmap_init(); - - return 0; -} - -static void __exit ir_core_exit(void) -{ - class_unregister(&ir_input_class); - ir_rcmap_cleanup(); -} - -module_init(ir_core_init); -module_exit(ir_core_exit); diff --git a/drivers/media/IR/rc-main.c b/drivers/media/IR/rc-main.c new file mode 100644 index 0000000..93a5fdc --- /dev/null +++ b/drivers/media/IR/rc-main.c @@ -0,0 +1,1198 @@ +/* rc-core.c - Remote Control core module + * + * Copyright (C) 2010 by Mauro Carvalho Chehab + * + * 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. + */ + +#include +#include +#include +#include +#include +#include +#include "ir-core-priv.h" + +#define IRRCV_NUM_DEVICES 256 + +/* bit array to represent IR sysfs device number */ +static unsigned long ir_core_dev_number; + +/* Sizes are in bytes, 256 bytes allows for 32 entries on x64 */ +#define IR_TAB_MIN_SIZE 256 +#define IR_TAB_MAX_SIZE 8192 + +/* FIXME: IR_KEYPRESS_TIMEOUT should be protocol specific */ +#define IR_KEYPRESS_TIMEOUT 250 + +/* Used to keep track of known keymaps */ +static LIST_HEAD(rc_map_list); +static DEFINE_SPINLOCK(rc_map_lock); + +/* Forward declarations */ +static int ir_register_class(struct input_dev *input_dev); +static void ir_unregister_class(struct input_dev *input_dev); +static int ir_register_input(struct input_dev *input_dev) + + +static struct rc_keymap *seek_rc_map(const char *name) +{ + struct rc_keymap *map = NULL; + + spin_lock(&rc_map_lock); + list_for_each_entry(map, &rc_map_list, list) { + if (!strcmp(name, map->map.name)) { + spin_unlock(&rc_map_lock); + return map; + } + } + spin_unlock(&rc_map_lock); + + return NULL; +} + +struct ir_scancode_table *get_rc_map(const char *name) +{ + + struct rc_keymap *map; + + map = seek_rc_map(name); +#ifdef MODULE + if (!map) { + int rc = request_module(name); + if (rc < 0) { + printk(KERN_ERR "Couldn't load IR keymap %s\n", name); + return NULL; + } + msleep(20); /* Give some time for IR to register */ + + map = seek_rc_map(name); + } +#endif + if (!map) { + printk(KERN_ERR "IR keymap %s not found\n", name); + return NULL; + } + + printk(KERN_INFO "Registered IR keymap %s\n", map->map.name); + + return &map->map; +} +EXPORT_SYMBOL_GPL(get_rc_map); + +int ir_register_map(struct rc_keymap *map) +{ + spin_lock(&rc_map_lock); + list_add_tail(&map->list, &rc_map_list); + spin_unlock(&rc_map_lock); + return 0; +} +EXPORT_SYMBOL_GPL(ir_register_map); + +void ir_unregister_map(struct rc_keymap *map) +{ + spin_lock(&rc_map_lock); + list_del(&map->list); + spin_unlock(&rc_map_lock); +} +EXPORT_SYMBOL_GPL(ir_unregister_map); + + +static struct ir_scancode empty[] = { + { 0x2a, KEY_COFFEE }, +}; + +static struct rc_keymap empty_map = { + .map = { + .scan = empty, + .size = ARRAY_SIZE(empty), + .ir_type = IR_TYPE_UNKNOWN, /* Legacy IR type */ + .name = RC_MAP_EMPTY, + } +}; + +/** + * ir_create_table() - initializes a scancode table + * @rc_tab: the ir_scancode_table to initialize + * @name: name to assign to the table + * @ir_type: ir type to assign to the new table + * @size: initial size of the table + * @return: zero on success or a negative error code + * + * This routine will initialize the ir_scancode_table and will allocate + * memory to hold at least the specified number elements. + */ +static int ir_create_table(struct ir_scancode_table *rc_tab, + const char *name, u64 ir_type, size_t size) +{ + rc_tab->name = name; + rc_tab->ir_type = ir_type; + rc_tab->alloc = roundup_pow_of_two(size * sizeof(struct ir_scancode)); + rc_tab->size = rc_tab->alloc / sizeof(struct ir_scancode); + rc_tab->scan = kmalloc(rc_tab->alloc, GFP_KERNEL); + if (!rc_tab->scan) + return -ENOMEM; + + IR_dprintk(1, "Allocated space for %u keycode entries (%u bytes)\n", + rc_tab->size, rc_tab->alloc); + return 0; +} + +/** + * ir_free_table() - frees memory allocated by a scancode table + * @rc_tab: the table whose mappings need to be freed + * + * This routine will free memory alloctaed for key mappings used by given + * scancode table. + */ +static void ir_free_table(struct ir_scancode_table *rc_tab) +{ + rc_tab->size = 0; + kfree(rc_tab->scan); + rc_tab->scan = NULL; +} + +/** + * ir_resize_table() - resizes a scancode table if necessary + * @rc_tab: the ir_scancode_table to resize + * @gfp_flags: gfp flags to use when allocating memory + * @return: zero on success or a negative error code + * + * This routine will shrink the ir_scancode_table if it has lots of + * unused entries and grow it if it is full. + */ +static int ir_resize_table(struct ir_scancode_table *rc_tab, gfp_t gfp_flags) +{ + unsigned int oldalloc = rc_tab->alloc; + unsigned int newalloc = oldalloc; + struct ir_scancode *oldscan = rc_tab->scan; + struct ir_scancode *newscan; + + if (rc_tab->size == rc_tab->len) { + /* All entries in use -> grow keytable */ + if (rc_tab->alloc >= IR_TAB_MAX_SIZE) + return -ENOMEM; + + newalloc *= 2; + IR_dprintk(1, "Growing table to %u bytes\n", newalloc); + } + + if ((rc_tab->len * 3 < rc_tab->size) && (oldalloc > IR_TAB_MIN_SIZE)) { + /* Less than 1/3 of entries in use -> shrink keytable */ + newalloc /= 2; + IR_dprintk(1, "Shrinking table to %u bytes\n", newalloc); + } + + if (newalloc == oldalloc) + return 0; + + newscan = kmalloc(newalloc, gfp_flags); + if (!newscan) { + IR_dprintk(1, "Failed to kmalloc %u bytes\n", newalloc); + return -ENOMEM; + } + + memcpy(newscan, rc_tab->scan, rc_tab->len * sizeof(struct ir_scancode)); + rc_tab->scan = newscan; + rc_tab->alloc = newalloc; + rc_tab->size = rc_tab->alloc / sizeof(struct ir_scancode); + kfree(oldscan); + return 0; +} + +/** + * ir_update_mapping() - set a keycode in the scancode->keycode table + * @dev: the struct input_dev device descriptor + * @rc_tab: scancode table to be adjusted + * @index: index of the mapping that needs to be updated + * @keycode: the desired keycode + * @return: previous keycode assigned to the mapping + * + * This routine is used to update scancode->keycopde mapping at given + * position. + */ +static unsigned int ir_update_mapping(struct input_dev *dev, + struct ir_scancode_table *rc_tab, + unsigned int index, + unsigned int new_keycode) +{ + int old_keycode = rc_tab->scan[index].keycode; + int i; + + /* Did the user wish to remove the mapping? */ + if (new_keycode == KEY_RESERVED || new_keycode == KEY_UNKNOWN) { + IR_dprintk(1, "#%d: Deleting scan 0x%04x\n", + index, rc_tab->scan[index].scancode); + rc_tab->len--; + memmove(&rc_tab->scan[index], &rc_tab->scan[index+ 1], + (rc_tab->len - index) * sizeof(struct ir_scancode)); + } else { + IR_dprintk(1, "#%d: %s scan 0x%04x with key 0x%04x\n", + index, + old_keycode == KEY_RESERVED ? "New" : "Replacing", + rc_tab->scan[index].scancode, new_keycode); + rc_tab->scan[index].keycode = new_keycode; + __set_bit(new_keycode, dev->keybit); + } + + if (old_keycode != KEY_RESERVED) { + /* A previous mapping was updated... */ + __clear_bit(old_keycode, dev->keybit); + /* ... but another scancode might use the same keycode */ + for (i = 0; i < rc_tab->len; i++) { + if (rc_tab->scan[i].keycode == old_keycode) { + __set_bit(old_keycode, dev->keybit); + break; + } + } + + /* Possibly shrink the keytable, failure is not a problem */ + ir_resize_table(rc_tab, GFP_ATOMIC); + } + + return old_keycode; +} + +/** + * ir_establish_scancode() - set a keycode in the scancode->keycode table + * @ir_dev: the struct ir_input_dev device descriptor + * @rc_tab: scancode table to be searched + * @scancode: the desired scancode + * @resize: controls whether we allowed to resize the table to + * accomodate not yet present scancodes + * @return: index of the mapping containing scancode in question + * or -1U in case of failure. + * + * This routine is used to locate given scancode in ir_scancode_table. + * If scancode is not yet present the routine will allocate a new slot + * for it. + */ +static unsigned int ir_establish_scancode(struct ir_input_dev *ir_dev, + struct ir_scancode_table *rc_tab, + unsigned int scancode, + bool resize) +{ + unsigned int i; + + /* + * Unfortunately, some hardware-based IR decoders don't provide + * all bits for the complete IR code. In general, they provide only + * the command part of the IR code. Yet, as it is possible to replace + * the provided IR with another one, it is needed to allow loading + * IR tables from other remotes. So, + */ + if (ir_dev->props && ir_dev->props->scanmask) + scancode &= ir_dev->props->scanmask; + + /* First check if we already have a mapping for this ir command */ + for (i = 0; i < rc_tab->len; i++) { + if (rc_tab->scan[i].scancode == scancode) + return i; + + /* Keytable is sorted from lowest to highest scancode */ + if (rc_tab->scan[i].scancode >= scancode) + break; + } + + /* No previous mapping found, we might need to grow the table */ + if (rc_tab->size == rc_tab->len) { + if (!resize || ir_resize_table(rc_tab, GFP_ATOMIC)) + return -1U; + } + + /* i is the proper index to insert our new keycode */ + if (i < rc_tab->len) + memmove(&rc_tab->scan[i + 1], &rc_tab->scan[i], + (rc_tab->len - i) * sizeof(struct ir_scancode)); + rc_tab->scan[i].scancode = scancode; + rc_tab->scan[i].keycode = KEY_RESERVED; + rc_tab->len++; + + return i; +} + +/** + * ir_setkeycode() - set a keycode in the scancode->keycode table + * @dev: the struct input_dev device descriptor + * @scancode: the desired scancode + * @keycode: result + * @return: -EINVAL if the keycode could not be inserted, otherwise zero. + * + * This routine is used to handle evdev EVIOCSKEY ioctl. + */ +static int ir_setkeycode(struct input_dev *dev, + const struct input_keymap_entry *ke, + unsigned int *old_keycode) +{ + struct ir_input_dev *ir_dev = input_get_drvdata(dev); + struct ir_scancode_table *rc_tab = &ir_dev->rc_tab; + unsigned int index; + unsigned int scancode; + int retval; + unsigned long flags; + + spin_lock_irqsave(&rc_tab->lock, flags); + + if (ke->flags & INPUT_KEYMAP_BY_INDEX) { + index = ke->index; + if (index >= rc_tab->len) { + retval = -EINVAL; + goto out; + } + } else { + retval = input_scancode_to_scalar(ke, &scancode); + if (retval) + goto out; + + index = ir_establish_scancode(ir_dev, rc_tab, scancode, true); + if (index >= rc_tab->len) { + retval = -ENOMEM; + goto out; + } + } + + *old_keycode = ir_update_mapping(dev, rc_tab, index, ke->keycode); + +out: + spin_unlock_irqrestore(&rc_tab->lock, flags); + return retval; +} + +/** + * ir_setkeytable() - sets several entries in the scancode->keycode table + * @dev: the struct input_dev device descriptor + * @to: the struct ir_scancode_table to copy entries to + * @from: the struct ir_scancode_table to copy entries from + * @return: -ENOMEM if all keycodes could not be inserted, otherwise zero. + * + * This routine is used to handle table initialization. + */ +static int ir_setkeytable(struct ir_input_dev *ir_dev, + const struct ir_scancode_table *from) +{ + struct ir_scancode_table *rc_tab = &ir_dev->rc_tab; + unsigned int i, index; + int rc; + + rc = ir_create_table(&ir_dev->rc_tab, + from->name, from->ir_type, from->size); + if (rc) + return rc; + + IR_dprintk(1, "Allocated space for %u keycode entries (%u bytes)\n", + rc_tab->size, rc_tab->alloc); + + for (i = 0; i < from->size; i++) { + index = ir_establish_scancode(ir_dev, rc_tab, + from->scan[i].scancode, false); + if (index >= rc_tab->len) { + rc = -ENOMEM; + break; + } + + ir_update_mapping(ir_dev->input_dev, rc_tab, index, + from->scan[i].keycode); + } + + if (rc) + ir_free_table(rc_tab); + + return rc; +} + +/** + * ir_lookup_by_scancode() - locate mapping by scancode + * @rc_tab: the &struct ir_scancode_table to search + * @scancode: scancode to look for in the table + * @return: index in the table, -1U if not found + * + * This routine performs binary search in RC keykeymap table for + * given scancode. + */ +static unsigned int ir_lookup_by_scancode(const struct ir_scancode_table *rc_tab, + unsigned int scancode) +{ + unsigned int start = 0; + unsigned int end = rc_tab->len - 1; + unsigned int mid; + + while (start <= end) { + mid = (start + end) / 2; + if (rc_tab->scan[mid].scancode < scancode) + start = mid + 1; + else if (rc_tab->scan[mid].scancode > scancode) + end = mid - 1; + else + return mid; + } + + return -1U; +} + +/** + * ir_getkeycode() - get a keycode from the scancode->keycode table + * @dev: the struct input_dev device descriptor + * @scancode: the desired scancode + * @keycode: used to return the keycode, if found, or KEY_RESERVED + * @return: always returns zero. + * + * This routine is used to handle evdev EVIOCGKEY ioctl. + */ +static int ir_getkeycode(struct input_dev *dev, + struct input_keymap_entry *ke) +{ + struct ir_input_dev *ir_dev = input_get_drvdata(dev); + struct ir_scancode_table *rc_tab = &ir_dev->rc_tab; + struct ir_scancode *entry; + unsigned long flags; + unsigned int index; + unsigned int scancode; + int retval; + + spin_lock_irqsave(&rc_tab->lock, flags); + + if (ke->flags & INPUT_KEYMAP_BY_INDEX) { + index = ke->index; + } else { + retval = input_scancode_to_scalar(ke, &scancode); + if (retval) + goto out; + + index = ir_lookup_by_scancode(rc_tab, scancode); + } + + if (index >= rc_tab->len) { + if (!(ke->flags & INPUT_KEYMAP_BY_INDEX)) + IR_dprintk(1, "unknown key for scancode 0x%04x\n", + scancode); + retval = -EINVAL; + goto out; + } + + entry = &rc_tab->scan[index]; + + ke->index = index; + ke->keycode = entry->keycode; + ke->len = sizeof(entry->scancode); + memcpy(ke->scancode, &entry->scancode, sizeof(entry->scancode)); + +out: + spin_unlock_irqrestore(&rc_tab->lock, flags); + return retval; +} + +/** + * ir_g_keycode_from_table() - gets the keycode that corresponds to a scancode + * @input_dev: the struct input_dev descriptor of the device + * @scancode: the scancode that we're seeking + * + * This routine is used by the input routines when a key is pressed at the + * IR. The scancode is received and needs to be converted into a keycode. + * If the key is not found, it returns KEY_RESERVED. Otherwise, returns the + * corresponding keycode from the table. + */ +u32 ir_g_keycode_from_table(struct input_dev *dev, u32 scancode) +{ + struct ir_input_dev *ir_dev = input_get_drvdata(dev); + struct ir_scancode_table *rc_tab = &ir_dev->rc_tab; + unsigned int keycode; + unsigned int index; + unsigned long flags; + + spin_lock_irqsave(&rc_tab->lock, flags); + + index = ir_lookup_by_scancode(rc_tab, scancode); + keycode = index < rc_tab->len ? + rc_tab->scan[index].keycode : KEY_RESERVED; + + spin_unlock_irqrestore(&rc_tab->lock, flags); + + if (keycode != KEY_RESERVED) + IR_dprintk(1, "%s: scancode 0x%04x keycode 0x%02x\n", + dev->name, scancode, keycode); + + return keycode; +} +EXPORT_SYMBOL_GPL(ir_g_keycode_from_table); + +/** + * ir_do_keyup() - internal function to signal the release of a keypress + * @ir: the struct ir_input_dev descriptor of the device + * + * This function is used internally to release a keypress, it must be + * called with keylock held. + */ +static void ir_do_keyup(struct ir_input_dev *ir) +{ + if (!ir->keypressed) + return; + + IR_dprintk(1, "keyup key 0x%04x\n", ir->last_keycode); + input_report_key(ir->input_dev, ir->last_keycode, 0); + input_sync(ir->input_dev); + ir->keypressed = false; +} + +/** + * ir_keyup() - generates input event to signal the release of a keypress + * @dev: the struct input_dev descriptor of the device + * + * This routine is used to signal that a key has been released on the + * remote control. + */ +void ir_keyup(struct input_dev *dev) +{ + unsigned long flags; + struct ir_input_dev *ir = input_get_drvdata(dev); + + spin_lock_irqsave(&ir->keylock, flags); + ir_do_keyup(ir); + spin_unlock_irqrestore(&ir->keylock, flags); +} +EXPORT_SYMBOL_GPL(ir_keyup); + +/** + * ir_timer_keyup() - generates a keyup event after a timeout + * @cookie: a pointer to struct ir_input_dev passed to setup_timer() + * + * This routine will generate a keyup event some time after a keydown event + * is generated when no further activity has been detected. + */ +static void ir_timer_keyup(unsigned long cookie) +{ + struct ir_input_dev *ir = (struct ir_input_dev *)cookie; + unsigned long flags; + + /* + * ir->keyup_jiffies is used to prevent a race condition if a + * hardware interrupt occurs at this point and the keyup timer + * event is moved further into the future as a result. + * + * The timer will then be reactivated and this function called + * again in the future. We need to exit gracefully in that case + * to allow the input subsystem to do its auto-repeat magic or + * a keyup event might follow immediately after the keydown. + */ + spin_lock_irqsave(&ir->keylock, flags); + if (time_is_before_eq_jiffies(ir->keyup_jiffies)) + ir_do_keyup(ir); + spin_unlock_irqrestore(&ir->keylock, flags); +} + +/** + * ir_repeat() - notifies the IR core that a key is still pressed + * @dev: the struct input_dev descriptor of the device + * + * This routine is used by IR decoders when a repeat message which does + * not include the necessary bits to reproduce the scancode has been + * received. + */ +void ir_repeat(struct input_dev *dev) +{ + unsigned long flags; + struct ir_input_dev *ir = input_get_drvdata(dev); + + spin_lock_irqsave(&ir->keylock, flags); + + input_event(dev, EV_MSC, MSC_SCAN, ir->last_scancode); + + if (!ir->keypressed) + goto out; + + ir->keyup_jiffies = jiffies + msecs_to_jiffies(IR_KEYPRESS_TIMEOUT); + mod_timer(&ir->timer_keyup, ir->keyup_jiffies); + +out: + spin_unlock_irqrestore(&ir->keylock, flags); +} +EXPORT_SYMBOL_GPL(ir_repeat); + +/** + * ir_do_keydown() - internal function to process a keypress + * @dev: the struct input_dev descriptor of the device + * @scancode: the scancode of the keypress + * @keycode: the keycode of the keypress + * @toggle: the toggle value of the keypress + * + * This function is used internally to register a keypress, it must be + * called with keylock held. + */ +static void ir_do_keydown(struct input_dev *dev, int scancode, + u32 keycode, u8 toggle) +{ + struct ir_input_dev *ir = input_get_drvdata(dev); + + input_event(dev, EV_MSC, MSC_SCAN, scancode); + + /* Repeat event? */ + if (ir->keypressed && + ir->last_scancode == scancode && + ir->last_toggle == toggle) + return; + + /* Release old keypress */ + ir_do_keyup(ir); + + ir->last_scancode = scancode; + ir->last_toggle = toggle; + ir->last_keycode = keycode; + + if (keycode == KEY_RESERVED) + return; + + /* Register a keypress */ + ir->keypressed = true; + IR_dprintk(1, "%s: key down event, key 0x%04x, scancode 0x%04x\n", + dev->name, keycode, scancode); + input_report_key(dev, ir->last_keycode, 1); + input_sync(dev); +} + +/** + * ir_keydown() - generates input event for a key press + * @dev: the struct input_dev descriptor of the device + * @scancode: the scancode that we're seeking + * @toggle: the toggle value (protocol dependent, if the protocol doesn't + * support toggle values, this should be set to zero) + * + * This routine is used by the input routines when a key is pressed at the + * IR. It gets the keycode for a scancode and reports an input event via + * input_report_key(). + */ +void ir_keydown(struct input_dev *dev, int scancode, u8 toggle) +{ + unsigned long flags; + struct ir_input_dev *ir = input_get_drvdata(dev); + u32 keycode = ir_g_keycode_from_table(dev, scancode); + + spin_lock_irqsave(&ir->keylock, flags); + ir_do_keydown(dev, scancode, keycode, toggle); + + if (ir->keypressed) { + ir->keyup_jiffies = jiffies + msecs_to_jiffies(IR_KEYPRESS_TIMEOUT); + mod_timer(&ir->timer_keyup, ir->keyup_jiffies); + } + spin_unlock_irqrestore(&ir->keylock, flags); +} +EXPORT_SYMBOL_GPL(ir_keydown); + +/** + * ir_keydown_notimeout() - generates input event for a key press without + * an automatic keyup event at a later time + * @dev: the struct input_dev descriptor of the device + * @scancode: the scancode that we're seeking + * @toggle: the toggle value (protocol dependent, if the protocol doesn't + * support toggle values, this should be set to zero) + * + * This routine is used by the input routines when a key is pressed at the + * IR. It gets the keycode for a scancode and reports an input event via + * input_report_key(). The driver must manually call ir_keyup() at a later + * stage. + */ +void ir_keydown_notimeout(struct input_dev *dev, int scancode, u8 toggle) +{ + unsigned long flags; + struct ir_input_dev *ir = input_get_drvdata(dev); + u32 keycode = ir_g_keycode_from_table(dev, scancode); + + spin_lock_irqsave(&ir->keylock, flags); + ir_do_keydown(dev, scancode, keycode, toggle); + spin_unlock_irqrestore(&ir->keylock, flags); +} +EXPORT_SYMBOL_GPL(ir_keydown_notimeout); + +static int ir_open(struct input_dev *input_dev) +{ + struct ir_input_dev *ir_dev = input_get_drvdata(input_dev); + + return ir_dev->props->open(ir_dev->props->priv); +} + +static void ir_close(struct input_dev *input_dev) +{ + struct ir_input_dev *ir_dev = input_get_drvdata(input_dev); + + ir_dev->props->close(ir_dev->props->priv); +} + +/** + * __ir_input_register() - sets the IR keycode table and add the handlers + * for keymap table get/set + * @input_dev: the struct input_dev descriptor of the device + * @rc_tab: the struct ir_scancode_table table of scancode/keymap + * + * This routine is used to initialize the input infrastructure + * to work with an IR. + * It will register the input/evdev interface for the device and + * register the syfs code for IR class + */ +int __ir_input_register(struct input_dev *input_dev, + const struct ir_scancode_table *rc_tab, + struct ir_dev_props *props, + const char *driver_name) +{ + struct ir_input_dev *ir_dev; + int rc; + + if (rc_tab->scan == NULL || !rc_tab->size) + return -EINVAL; + + ir_dev = kzalloc(sizeof(*ir_dev), GFP_KERNEL); + if (!ir_dev) + return -ENOMEM; + + ir_dev->driver_name = kasprintf(GFP_KERNEL, "%s", driver_name); + if (!ir_dev->driver_name) { + rc = -ENOMEM; + goto out_dev; + } + + input_dev->getkeycode_new = ir_getkeycode; + input_dev->setkeycode_new = ir_setkeycode; + input_set_drvdata(input_dev, ir_dev); + ir_dev->input_dev = input_dev; + + spin_lock_init(&ir_dev->rc_tab.lock); + spin_lock_init(&ir_dev->keylock); + setup_timer(&ir_dev->timer_keyup, ir_timer_keyup, (unsigned long)ir_dev); + + if (props) { + ir_dev->props = props; + if (props->open) + input_dev->open = ir_open; + if (props->close) + input_dev->close = ir_close; + } + + set_bit(EV_KEY, input_dev->evbit); + set_bit(EV_REP, input_dev->evbit); + set_bit(EV_MSC, input_dev->evbit); + set_bit(MSC_SCAN, input_dev->mscbit); + + rc = ir_setkeytable(ir_dev, rc_tab); + if (rc) + goto out_name; + + rc = ir_register_class(input_dev); + if (rc < 0) + goto out_table; + + if (ir_dev->props) + if (ir_dev->props->driver_type == RC_DRIVER_IR_RAW) { + rc = ir_raw_event_register(input_dev); + if (rc < 0) + goto out_event; + } + + rc = ir_register_input(input_dev); + if (rc < 0) + goto out_event; + + IR_dprintk(1, "Registered input device on %s for %s remote%s.\n", + driver_name, rc_tab->name, + (ir_dev->props && ir_dev->props->driver_type == RC_DRIVER_IR_RAW) ? + " in raw mode" : ""); + + /* + * Default delay of 250ms is too short for some protocols, expecially + * since the timeout is currently set to 250ms. Increase it to 500ms, + * to avoid wrong repetition of the keycodes. + */ + input_dev->rep[REP_DELAY] = 500; + + return 0; + +out_event: + ir_unregister_class(input_dev); +out_table: + ir_free_table(&ir_dev->rc_tab); +out_name: + kfree(ir_dev->driver_name); +out_dev: + kfree(ir_dev); + return rc; +} +EXPORT_SYMBOL_GPL(__ir_input_register); + +/** + * ir_input_unregister() - unregisters IR and frees resources + * @input_dev: the struct input_dev descriptor of the device + + * This routine is used to free memory and de-register interfaces. + */ +void ir_input_unregister(struct input_dev *input_dev) +{ + struct ir_input_dev *ir_dev = input_get_drvdata(input_dev); + + if (!ir_dev) + return; + + IR_dprintk(1, "Freed keycode table\n"); + + del_timer_sync(&ir_dev->timer_keyup); + if (ir_dev->props) + if (ir_dev->props->driver_type == RC_DRIVER_IR_RAW) + ir_raw_event_unregister(input_dev); + + ir_free_table(&ir_dev->rc_tab); + + ir_unregister_class(input_dev); + + kfree(ir_dev->driver_name); + kfree(ir_dev); +} +EXPORT_SYMBOL_GPL(ir_input_unregister); + +/* class for /sys/class/rc */ +static char *ir_devnode(struct device *dev, mode_t *mode) +{ + return kasprintf(GFP_KERNEL, "rc/%s", dev_name(dev)); +} + +static struct class ir_input_class = { + .name = "rc", + .devnode = ir_devnode, +}; + +static struct { + u64 type; + char *name; +} proto_names[] = { + { IR_TYPE_UNKNOWN, "unknown" }, + { IR_TYPE_RC5, "rc-5" }, + { IR_TYPE_NEC, "nec" }, + { IR_TYPE_RC6, "rc-6" }, + { IR_TYPE_JVC, "jvc" }, + { IR_TYPE_SONY, "sony" }, + { IR_TYPE_RC5_SZ, "rc-5-sz" }, + { IR_TYPE_LIRC, "lirc" }, +}; + +#define PROTO_NONE "none" + +/** + * show_protocols() - shows the current IR protocol(s) + * @d: the device descriptor + * @mattr: the device attribute struct (unused) + * @buf: a pointer to the output buffer + * + * This routine is a callback routine for input read the IR protocol type(s). + * it is trigged by reading /sys/class/rc/rc?/protocols. + * It returns the protocol names of supported protocols. + * Enabled protocols are printed in brackets. + */ +static ssize_t show_protocols(struct device *d, + struct device_attribute *mattr, char *buf) +{ + struct ir_input_dev *ir_dev = dev_get_drvdata(d); + u64 allowed, enabled; + char *tmp = buf; + int i; + + /* Device is being removed */ + if (!ir_dev) + return -EINVAL; + + if (ir_dev->props && ir_dev->props->driver_type == RC_DRIVER_SCANCODE) { + enabled = ir_dev->rc_tab.ir_type; + allowed = ir_dev->props->allowed_protos; + } else if (ir_dev->raw) { + enabled = ir_dev->raw->enabled_protocols; + allowed = ir_raw_get_allowed_protocols(); + } else + return sprintf(tmp, "[builtin]\n"); + + IR_dprintk(1, "allowed - 0x%llx, enabled - 0x%llx\n", + (long long)allowed, + (long long)enabled); + + for (i = 0; i < ARRAY_SIZE(proto_names); i++) { + if (allowed & enabled & proto_names[i].type) + tmp += sprintf(tmp, "[%s] ", proto_names[i].name); + else if (allowed & proto_names[i].type) + tmp += sprintf(tmp, "%s ", proto_names[i].name); + } + + if (tmp != buf) + tmp--; + *tmp = '\n'; + return tmp + 1 - buf; +} + +/** + * store_protocols() - changes the current IR protocol(s) + * @d: the device descriptor + * @mattr: the device attribute struct (unused) + * @buf: a pointer to the input buffer + * @len: length of the input buffer + * + * This routine is a callback routine for changing the IR protocol type. + * It is trigged by writing to /sys/class/rc/rc?/protocols. + * Writing "+proto" will add a protocol to the list of enabled protocols. + * Writing "-proto" will remove a protocol from the list of enabled protocols. + * Writing "proto" will enable only "proto". + * Writing "none" will disable all protocols. + * Returns -EINVAL if an invalid protocol combination or unknown protocol name + * is used, otherwise @len. + */ +static ssize_t store_protocols(struct device *d, + struct device_attribute *mattr, + const char *data, + size_t len) +{ + struct ir_input_dev *ir_dev = dev_get_drvdata(d); + bool enable, disable; + const char *tmp; + u64 type; + u64 mask; + int rc, i, count = 0; + unsigned long flags; + + /* Device is being removed */ + if (!ir_dev) + return -EINVAL; + + if (ir_dev->props && ir_dev->props->driver_type == RC_DRIVER_SCANCODE) + type = ir_dev->rc_tab.ir_type; + else if (ir_dev->raw) + type = ir_dev->raw->enabled_protocols; + else { + IR_dprintk(1, "Protocol switching not supported\n"); + return -EINVAL; + } + + while ((tmp = strsep((char **) &data, " \n")) != NULL) { + if (!*tmp) + break; + + if (*tmp == '+') { + enable = true; + disable = false; + tmp++; + } else if (*tmp == '-') { + enable = false; + disable = true; + tmp++; + } else { + enable = false; + disable = false; + } + + if (!enable && !disable && !strncasecmp(tmp, PROTO_NONE, sizeof(PROTO_NONE))) { + tmp += sizeof(PROTO_NONE); + mask = 0; + count++; + } else { + for (i = 0; i < ARRAY_SIZE(proto_names); i++) { + if (!strncasecmp(tmp, proto_names[i].name, strlen(proto_names[i].name))) { + tmp += strlen(proto_names[i].name); + mask = proto_names[i].type; + break; + } + } + if (i == ARRAY_SIZE(proto_names)) { + IR_dprintk(1, "Unknown protocol: '%s'\n", tmp); + return -EINVAL; + } + count++; + } + + if (enable) + type |= mask; + else if (disable) + type &= ~mask; + else + type = mask; + } + + if (!count) { + IR_dprintk(1, "Protocol not specified\n"); + return -EINVAL; + } + + if (ir_dev->props && ir_dev->props->change_protocol) { + rc = ir_dev->props->change_protocol(ir_dev->props->priv, + type); + if (rc < 0) { + IR_dprintk(1, "Error setting protocols to 0x%llx\n", + (long long)type); + return -EINVAL; + } + } + + if (ir_dev->props && ir_dev->props->driver_type == RC_DRIVER_SCANCODE) { + spin_lock_irqsave(&ir_dev->rc_tab.lock, flags); + ir_dev->rc_tab.ir_type = type; + spin_unlock_irqrestore(&ir_dev->rc_tab.lock, flags); + } else { + ir_dev->raw->enabled_protocols = type; + } + + IR_dprintk(1, "Current protocol(s): 0x%llx\n", + (long long)type); + + return len; +} + +#define ADD_HOTPLUG_VAR(fmt, val...) \ + do { \ + int err = add_uevent_var(env, fmt, val); \ + if (err) \ + return err; \ + } while (0) + +static int rc_dev_uevent(struct device *device, struct kobj_uevent_env *env) +{ + struct ir_input_dev *ir_dev = dev_get_drvdata(device); + + if (ir_dev->rc_tab.name) + ADD_HOTPLUG_VAR("NAME=%s", ir_dev->rc_tab.name); + if (ir_dev->driver_name) + ADD_HOTPLUG_VAR("DRV_NAME=%s", ir_dev->driver_name); + + return 0; +} + +/* + * Static device attribute struct with the sysfs attributes for IR's + */ +static DEVICE_ATTR(protocols, S_IRUGO | S_IWUSR, + show_protocols, store_protocols); + +static struct attribute *rc_dev_attrs[] = { + &dev_attr_protocols.attr, + NULL, +}; + +static struct attribute_group rc_dev_attr_grp = { + .attrs = rc_dev_attrs, +}; + +static const struct attribute_group *rc_dev_attr_groups[] = { + &rc_dev_attr_grp, + NULL +}; + +static struct device_type rc_dev_type = { + .groups = rc_dev_attr_groups, + .uevent = rc_dev_uevent, +}; + +/** + * ir_register_class() - creates the sysfs for /sys/class/rc/rc? + * @input_dev: the struct input_dev descriptor of the device + * + * This routine is used to register the syfs code for IR class + */ +static int ir_register_class(struct input_dev *input_dev) +{ + struct ir_input_dev *ir_dev = input_get_drvdata(input_dev); + int devno = find_first_zero_bit(&ir_core_dev_number, + IRRCV_NUM_DEVICES); + + if (unlikely(devno < 0)) + return devno; + + ir_dev->dev.type = &rc_dev_type; + ir_dev->devno = devno; + + ir_dev->dev.class = &ir_input_class; + ir_dev->dev.parent = input_dev->dev.parent; + input_dev->dev.parent = &ir_dev->dev; + dev_set_name(&ir_dev->dev, "rc%d", devno); + dev_set_drvdata(&ir_dev->dev, ir_dev); + return device_register(&ir_dev->dev); +}; + +/** + * ir_register_input - registers ir input device with input subsystem + * @input_dev: the struct input_dev descriptor of the device + */ + +static int ir_register_input(struct input_dev *input_dev) +{ + struct ir_input_dev *ir_dev = input_get_drvdata(input_dev); + int rc; + const char *path; + + + rc = input_register_device(input_dev); + if (rc < 0) { + device_del(&ir_dev->dev); + return rc; + } + + __module_get(THIS_MODULE); + + path = kobject_get_path(&ir_dev->dev.kobj, GFP_KERNEL); + printk(KERN_INFO "%s: %s as %s\n", + dev_name(&ir_dev->dev), + input_dev->name ? input_dev->name : "Unspecified device", + path ? path : "N/A"); + kfree(path); + + set_bit(ir_dev->devno, &ir_core_dev_number); + return 0; +} + +/** + * ir_unregister_class() - removes the sysfs for sysfs for + * /sys/class/rc/rc? + * @input_dev: the struct input_dev descriptor of the device + * + * This routine is used to unregister the syfs code for IR class + */ +static void ir_unregister_class(struct input_dev *input_dev) +{ + struct ir_input_dev *ir_dev = input_get_drvdata(input_dev); + + input_set_drvdata(input_dev, NULL); + clear_bit(ir_dev->devno, &ir_core_dev_number); + input_unregister_device(input_dev); + device_del(&ir_dev->dev); + + module_put(THIS_MODULE); +} + +/* + * Init/exit code for the module. Basically, creates/removes /sys/class/rc + */ + +static int __init ir_core_init(void) +{ + int rc = class_register(&ir_input_class); + if (rc) { + printk(KERN_ERR "ir_core: unable to register rc class\n"); + return rc; + } + + /* Initialize/load the decoders/keymap code that will be used */ + ir_raw_init(); + ir_register_map(&empty_map); + + return 0; +} + +static void __exit ir_core_exit(void) +{ + class_unregister(&ir_input_class); + ir_unregister_map(&empty_map); +} + +module_init(ir_core_init); +module_exit(ir_core_exit); + +int ir_core_debug; /* ir_debug level (0,1,2) */ +EXPORT_SYMBOL_GPL(ir_core_debug); +module_param_named(debug, ir_core_debug, int, 0644); + +MODULE_AUTHOR("Mauro Carvalho Chehab "); +MODULE_LICENSE("GPL"); + diff --git a/drivers/media/IR/rc-map.c b/drivers/media/IR/rc-map.c deleted file mode 100644 index 689143f..0000000 --- a/drivers/media/IR/rc-map.c +++ /dev/null @@ -1,107 +0,0 @@ -/* ir-raw-event.c - handle IR Pulse/Space event - * - * Copyright (C) 2010 by Mauro Carvalho Chehab - * - * 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. - */ - -#include -#include -#include - -/* Used to handle IR raw handler extensions */ -static LIST_HEAD(rc_map_list); -static DEFINE_SPINLOCK(rc_map_lock); - -static struct rc_keymap *seek_rc_map(const char *name) -{ - struct rc_keymap *map = NULL; - - spin_lock(&rc_map_lock); - list_for_each_entry(map, &rc_map_list, list) { - if (!strcmp(name, map->map.name)) { - spin_unlock(&rc_map_lock); - return map; - } - } - spin_unlock(&rc_map_lock); - - return NULL; -} - -struct ir_scancode_table *get_rc_map(const char *name) -{ - - struct rc_keymap *map; - - map = seek_rc_map(name); -#ifdef MODULE - if (!map) { - int rc = request_module(name); - if (rc < 0) { - printk(KERN_ERR "Couldn't load IR keymap %s\n", name); - return NULL; - } - msleep(20); /* Give some time for IR to register */ - - map = seek_rc_map(name); - } -#endif - if (!map) { - printk(KERN_ERR "IR keymap %s not found\n", name); - return NULL; - } - - printk(KERN_INFO "Registered IR keymap %s\n", map->map.name); - - return &map->map; -} -EXPORT_SYMBOL_GPL(get_rc_map); - -int ir_register_map(struct rc_keymap *map) -{ - spin_lock(&rc_map_lock); - list_add_tail(&map->list, &rc_map_list); - spin_unlock(&rc_map_lock); - return 0; -} -EXPORT_SYMBOL_GPL(ir_register_map); - -void ir_unregister_map(struct rc_keymap *map) -{ - spin_lock(&rc_map_lock); - list_del(&map->list); - spin_unlock(&rc_map_lock); -} -EXPORT_SYMBOL_GPL(ir_unregister_map); - - -static struct ir_scancode empty[] = { - { 0x2a, KEY_COFFEE }, -}; - -static struct rc_keymap empty_map = { - .map = { - .scan = empty, - .size = ARRAY_SIZE(empty), - .ir_type = IR_TYPE_UNKNOWN, /* Legacy IR type */ - .name = RC_MAP_EMPTY, - } -}; - -int ir_rcmap_init(void) -{ - return ir_register_map(&empty_map); -} - -void ir_rcmap_cleanup(void) -{ - ir_unregister_map(&empty_map); -} diff --git a/drivers/media/IR/rc-raw.c b/drivers/media/IR/rc-raw.c new file mode 100644 index 0000000..a06a07e --- /dev/null +++ b/drivers/media/IR/rc-raw.c @@ -0,0 +1,382 @@ +/* ir-raw-event.c - handle IR Pulse/Space event + * + * Copyright (C) 2010 by Mauro Carvalho Chehab + * + * 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. + */ + +#include +#include +#include +#include +#include "ir-core-priv.h" + +/* Define the max number of pulse/space transitions to buffer */ +#define MAX_IR_EVENT_SIZE 512 + +/* Used to keep track of IR raw clients, protected by ir_raw_handler_lock */ +static LIST_HEAD(ir_raw_client_list); + +/* Used to handle IR raw handler extensions */ +static DEFINE_MUTEX(ir_raw_handler_lock); +static LIST_HEAD(ir_raw_handler_list); +static u64 available_protocols; + +#ifdef MODULE +/* Used to load the decoders */ +static struct work_struct wq_load; +#endif + +static int ir_raw_event_thread(void *data) +{ + struct ir_raw_event ev; + struct ir_raw_handler *handler; + struct ir_raw_event_ctrl *raw = (struct ir_raw_event_ctrl *)data; + int retval; + + while (!kthread_should_stop()) { + + spin_lock_irq(&raw->lock); + retval = kfifo_out(&raw->kfifo, &ev, sizeof(ev)); + + if (!retval) { + set_current_state(TASK_INTERRUPTIBLE); + + if (kthread_should_stop()) + set_current_state(TASK_RUNNING); + + spin_unlock_irq(&raw->lock); + schedule(); + continue; + } + + spin_unlock_irq(&raw->lock); + + + BUG_ON(retval != sizeof(ev)); + + mutex_lock(&ir_raw_handler_lock); + list_for_each_entry(handler, &ir_raw_handler_list, list) + handler->decode(raw->input_dev, ev); + raw->prev_ev = ev; + mutex_unlock(&ir_raw_handler_lock); + } + + return 0; +} + +/** + * ir_raw_event_store() - pass a pulse/space duration to the raw ir decoders + * @input_dev: the struct input_dev device descriptor + * @ev: the struct ir_raw_event descriptor of the pulse/space + * + * This routine (which may be called from an interrupt context) stores a + * pulse/space duration for the raw ir decoding state machines. Pulses are + * signalled as positive values and spaces as negative values. A zero value + * will reset the decoding state machines. + */ +int ir_raw_event_store(struct input_dev *input_dev, struct ir_raw_event *ev) +{ + struct ir_input_dev *ir = input_get_drvdata(input_dev); + + if (!ir->raw) + return -EINVAL; + + IR_dprintk(2, "sample: (%05dus %s)\n", + TO_US(ev->duration), TO_STR(ev->pulse)); + + if (kfifo_in(&ir->raw->kfifo, ev, sizeof(*ev)) != sizeof(*ev)) + return -ENOMEM; + + return 0; +} +EXPORT_SYMBOL_GPL(ir_raw_event_store); + +/** + * ir_raw_event_store_edge() - notify raw ir decoders of the start of a pulse/space + * @input_dev: the struct input_dev device descriptor + * @type: the type of the event that has occurred + * + * This routine (which may be called from an interrupt context) is used to + * store the beginning of an ir pulse or space (or the start/end of ir + * reception) for the raw ir decoding state machines. This is used by + * hardware which does not provide durations directly but only interrupts + * (or similar events) on state change. + */ +int ir_raw_event_store_edge(struct input_dev *input_dev, enum raw_event_type type) +{ + struct ir_input_dev *ir = input_get_drvdata(input_dev); + ktime_t now; + s64 delta; /* ns */ + struct ir_raw_event ev; + int rc = 0; + + if (!ir->raw) + return -EINVAL; + + now = ktime_get(); + delta = ktime_to_ns(ktime_sub(now, ir->raw->last_event)); + + /* Check for a long duration since last event or if we're + * being called for the first time, note that delta can't + * possibly be negative. + */ + ev.duration = 0; + if (delta > IR_MAX_DURATION || !ir->raw->last_type) + type |= IR_START_EVENT; + else + ev.duration = delta; + + if (type & IR_START_EVENT) + ir_raw_event_reset(input_dev); + else if (ir->raw->last_type & IR_SPACE) { + ev.pulse = false; + rc = ir_raw_event_store(input_dev, &ev); + } else if (ir->raw->last_type & IR_PULSE) { + ev.pulse = true; + rc = ir_raw_event_store(input_dev, &ev); + } else + return 0; + + ir->raw->last_event = now; + ir->raw->last_type = type; + return rc; +} +EXPORT_SYMBOL_GPL(ir_raw_event_store_edge); + +/** + * ir_raw_event_store_with_filter() - pass next pulse/space to decoders with some processing + * @input_dev: the struct input_dev device descriptor + * @type: the type of the event that has occurred + * + * This routine (which may be called from an interrupt context) works + * in similiar manner to ir_raw_event_store_edge. + * This routine is intended for devices with limited internal buffer + * It automerges samples of same type, and handles timeouts + */ +int ir_raw_event_store_with_filter(struct input_dev *input_dev, + struct ir_raw_event *ev) +{ + struct ir_input_dev *ir = input_get_drvdata(input_dev); + struct ir_raw_event_ctrl *raw = ir->raw; + + if (!raw || !ir->props) + return -EINVAL; + + /* Ignore spaces in idle mode */ + if (ir->idle && !ev->pulse) + return 0; + else if (ir->idle) + ir_raw_event_set_idle(input_dev, false); + + if (!raw->this_ev.duration) { + raw->this_ev = *ev; + } else if (ev->pulse == raw->this_ev.pulse) { + raw->this_ev.duration += ev->duration; + } else { + ir_raw_event_store(input_dev, &raw->this_ev); + raw->this_ev = *ev; + } + + /* Enter idle mode if nessesary */ + if (!ev->pulse && ir->props->timeout && + raw->this_ev.duration >= ir->props->timeout) { + ir_raw_event_set_idle(input_dev, true); + } + return 0; +} +EXPORT_SYMBOL_GPL(ir_raw_event_store_with_filter); + +/** + * ir_raw_event_set_idle() - hint the ir core if device is receiving + * IR data or not + * @input_dev: the struct input_dev device descriptor + * @idle: the hint value + */ +void ir_raw_event_set_idle(struct input_dev *input_dev, bool idle) +{ + struct ir_input_dev *ir = input_get_drvdata(input_dev); + struct ir_raw_event_ctrl *raw = ir->raw; + + if (!ir->props || !ir->raw) + return; + + IR_dprintk(2, "%s idle mode\n", idle ? "enter" : "leave"); + + if (idle) { + raw->this_ev.timeout = true; + ir_raw_event_store(input_dev, &raw->this_ev); + init_ir_raw_event(&raw->this_ev); + } + + if (ir->props->s_idle) + ir->props->s_idle(ir->props->priv, idle); + ir->idle = idle; +} +EXPORT_SYMBOL_GPL(ir_raw_event_set_idle); + +/** + * ir_raw_event_handle() - schedules the decoding of stored ir data + * @input_dev: the struct input_dev device descriptor + * + * This routine will signal the workqueue to start decoding stored ir data. + */ +void ir_raw_event_handle(struct input_dev *input_dev) +{ + struct ir_input_dev *ir = input_get_drvdata(input_dev); + unsigned long flags; + + if (!ir->raw) + return; + + spin_lock_irqsave(&ir->raw->lock, flags); + wake_up_process(ir->raw->thread); + spin_unlock_irqrestore(&ir->raw->lock, flags); +} +EXPORT_SYMBOL_GPL(ir_raw_event_handle); + +/* used internally by the sysfs interface */ +u64 +ir_raw_get_allowed_protocols() +{ + u64 protocols; + mutex_lock(&ir_raw_handler_lock); + protocols = available_protocols; + mutex_unlock(&ir_raw_handler_lock); + return protocols; +} + +/* + * Used to (un)register raw event clients + */ +int ir_raw_event_register(struct input_dev *input_dev) +{ + struct ir_input_dev *ir = input_get_drvdata(input_dev); + int rc; + struct ir_raw_handler *handler; + + ir->raw = kzalloc(sizeof(*ir->raw), GFP_KERNEL); + if (!ir->raw) + return -ENOMEM; + + ir->raw->input_dev = input_dev; + + ir->raw->enabled_protocols = ~0; + rc = kfifo_alloc(&ir->raw->kfifo, sizeof(s64) * MAX_IR_EVENT_SIZE, + GFP_KERNEL); + if (rc < 0) { + kfree(ir->raw); + ir->raw = NULL; + return rc; + } + + spin_lock_init(&ir->raw->lock); + ir->raw->thread = kthread_run(ir_raw_event_thread, ir->raw, + "rc%u", (unsigned int)ir->devno); + + if (IS_ERR(ir->raw->thread)) { + int ret = PTR_ERR(ir->raw->thread); + + kfree(ir->raw); + ir->raw = NULL; + return ret; + } + + mutex_lock(&ir_raw_handler_lock); + list_add_tail(&ir->raw->list, &ir_raw_client_list); + list_for_each_entry(handler, &ir_raw_handler_list, list) + if (handler->raw_register) + handler->raw_register(ir->raw->input_dev); + mutex_unlock(&ir_raw_handler_lock); + + return 0; +} + +void ir_raw_event_unregister(struct input_dev *input_dev) +{ + struct ir_input_dev *ir = input_get_drvdata(input_dev); + struct ir_raw_handler *handler; + + if (!ir->raw) + return; + + kthread_stop(ir->raw->thread); + + mutex_lock(&ir_raw_handler_lock); + list_del(&ir->raw->list); + list_for_each_entry(handler, &ir_raw_handler_list, list) + if (handler->raw_unregister) + handler->raw_unregister(ir->raw->input_dev); + mutex_unlock(&ir_raw_handler_lock); + + kfifo_free(&ir->raw->kfifo); + kfree(ir->raw); + ir->raw = NULL; +} + +/* + * Extension interface - used to register the IR decoders + */ + +int ir_raw_handler_register(struct ir_raw_handler *ir_raw_handler) +{ + struct ir_raw_event_ctrl *raw; + + mutex_lock(&ir_raw_handler_lock); + list_add_tail(&ir_raw_handler->list, &ir_raw_handler_list); + if (ir_raw_handler->raw_register) + list_for_each_entry(raw, &ir_raw_client_list, list) + ir_raw_handler->raw_register(raw->input_dev); + available_protocols |= ir_raw_handler->protocols; + mutex_unlock(&ir_raw_handler_lock); + + return 0; +} +EXPORT_SYMBOL(ir_raw_handler_register); + +void ir_raw_handler_unregister(struct ir_raw_handler *ir_raw_handler) +{ + struct ir_raw_event_ctrl *raw; + + mutex_lock(&ir_raw_handler_lock); + list_del(&ir_raw_handler->list); + if (ir_raw_handler->raw_unregister) + list_for_each_entry(raw, &ir_raw_client_list, list) + ir_raw_handler->raw_unregister(raw->input_dev); + available_protocols &= ~ir_raw_handler->protocols; + mutex_unlock(&ir_raw_handler_lock); +} +EXPORT_SYMBOL(ir_raw_handler_unregister); + +#ifdef MODULE +static void init_decoders(struct work_struct *work) +{ + /* Load the decoder modules */ + + load_nec_decode(); + load_rc5_decode(); + load_rc6_decode(); + load_jvc_decode(); + load_sony_decode(); + load_lirc_codec(); + + /* If needed, we may later add some init code. In this case, + it is needed to change the CONFIG_MODULE test at ir-core.h + */ +} +#endif + +void ir_raw_init(void) +{ +#ifdef MODULE + INIT_WORK(&wq_load, init_decoders); + schedule_work(&wq_load); +#endif +} diff --git a/include/media/ir-core.h b/include/media/ir-core.h index 53048a2..d41502d 100644 --- a/include/media/ir-core.h +++ b/include/media/ir-core.h @@ -117,7 +117,6 @@ enum raw_event_type { #define to_ir_input_dev(_attr) container_of(_attr, struct ir_input_dev, attr) -/* From ir-keytable.c */ int __ir_input_register(struct input_dev *dev, const struct ir_scancode_table *ir_codes, struct ir_dev_props *props, @@ -164,7 +163,6 @@ void ir_keyup(struct input_dev *dev); u32 ir_g_keycode_from_table(struct input_dev *input_dev, u32 scancode); /* From ir-raw-event.c */ - struct ir_raw_event { union { u32 duration;