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@@ -1,6 +1,6 @@
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-/* ir-keytable.c - handle IR scancode->keycode tables
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+/* rc-core.c - handle IR scancode->keycode tables
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*
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*
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- * Copyright (C) 2009 by Mauro Carvalho Chehab <mchehab@redhat.com>
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+ * Copyright (C) 2009-2010 by Mauro Carvalho Chehab <mchehab@redhat.com>
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* it under the terms of the GNU General Public License as published by
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@@ -15,8 +15,14 @@
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#include <linux/input.h>
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#include <linux/input.h>
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#include <linux/slab.h>
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#include <linux/slab.h>
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+#include <linux/device.h>
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#include "rc-core-priv.h"
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#include "rc-core-priv.h"
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+#define IRRCV_NUM_DEVICES 256
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+
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+/* bit array to represent IR sysfs device number */
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+static unsigned long ir_core_dev_number;
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+
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/* Sizes are in bytes, 256 bytes allows for 32 entries on x64 */
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/* Sizes are in bytes, 256 bytes allows for 32 entries on x64 */
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#define IR_TAB_MIN_SIZE 256
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#define IR_TAB_MIN_SIZE 256
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#define IR_TAB_MAX_SIZE 8192
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#define IR_TAB_MAX_SIZE 8192
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@@ -758,6 +764,345 @@ void ir_input_unregister(struct input_dev *input_dev)
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}
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}
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EXPORT_SYMBOL_GPL(ir_input_unregister);
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EXPORT_SYMBOL_GPL(ir_input_unregister);
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+/* class for /sys/class/rc */
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+static char *ir_devnode(struct device *dev, mode_t *mode)
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+{
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+ return kasprintf(GFP_KERNEL, "rc/%s", dev_name(dev));
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+}
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+
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+static struct class ir_input_class = {
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+ .name = "rc",
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+ .devnode = ir_devnode,
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+};
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+
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+static struct {
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+ u64 type;
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+ char *name;
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+} proto_names[] = {
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+ { IR_TYPE_UNKNOWN, "unknown" },
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+ { IR_TYPE_RC5, "rc-5" },
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+ { IR_TYPE_NEC, "nec" },
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+ { IR_TYPE_RC6, "rc-6" },
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+ { IR_TYPE_JVC, "jvc" },
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+ { IR_TYPE_SONY, "sony" },
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+ { IR_TYPE_RC5_SZ, "rc-5-sz" },
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+ { IR_TYPE_LIRC, "lirc" },
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+};
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+
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+#define PROTO_NONE "none"
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+
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+/**
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+ * show_protocols() - shows the current IR protocol(s)
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+ * @d: the device descriptor
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+ * @mattr: the device attribute struct (unused)
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+ * @buf: a pointer to the output buffer
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+ *
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+ * This routine is a callback routine for input read the IR protocol type(s).
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+ * it is trigged by reading /sys/class/rc/rc?/protocols.
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+ * It returns the protocol names of supported protocols.
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+ * Enabled protocols are printed in brackets.
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+ */
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+static ssize_t show_protocols(struct device *d,
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+ struct device_attribute *mattr, char *buf)
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+{
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+ struct ir_input_dev *ir_dev = dev_get_drvdata(d);
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+ u64 allowed, enabled;
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+ char *tmp = buf;
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+ int i;
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+
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+ /* Device is being removed */
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+ if (!ir_dev)
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+ return -EINVAL;
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+
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+ if (ir_dev->props && ir_dev->props->driver_type == RC_DRIVER_SCANCODE) {
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+ enabled = ir_dev->rc_tab.ir_type;
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+ allowed = ir_dev->props->allowed_protos;
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+ } else if (ir_dev->raw) {
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+ enabled = ir_dev->raw->enabled_protocols;
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+ allowed = ir_raw_get_allowed_protocols();
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+ } else
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+ return sprintf(tmp, "[builtin]\n");
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+
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+ IR_dprintk(1, "allowed - 0x%llx, enabled - 0x%llx\n",
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+ (long long)allowed,
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+ (long long)enabled);
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+
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+ for (i = 0; i < ARRAY_SIZE(proto_names); i++) {
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+ if (allowed & enabled & proto_names[i].type)
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+ tmp += sprintf(tmp, "[%s] ", proto_names[i].name);
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+ else if (allowed & proto_names[i].type)
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+ tmp += sprintf(tmp, "%s ", proto_names[i].name);
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+ }
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+
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+ if (tmp != buf)
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+ tmp--;
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+ *tmp = '\n';
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+ return tmp + 1 - buf;
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+}
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+
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+/**
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+ * store_protocols() - changes the current IR protocol(s)
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+ * @d: the device descriptor
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+ * @mattr: the device attribute struct (unused)
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+ * @buf: a pointer to the input buffer
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+ * @len: length of the input buffer
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+ *
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+ * This routine is a callback routine for changing the IR protocol type.
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+ * It is trigged by writing to /sys/class/rc/rc?/protocols.
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+ * Writing "+proto" will add a protocol to the list of enabled protocols.
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+ * Writing "-proto" will remove a protocol from the list of enabled protocols.
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+ * Writing "proto" will enable only "proto".
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+ * Writing "none" will disable all protocols.
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+ * Returns -EINVAL if an invalid protocol combination or unknown protocol name
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+ * is used, otherwise @len.
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+ */
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+static ssize_t store_protocols(struct device *d,
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+ struct device_attribute *mattr,
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+ const char *data,
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+ size_t len)
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+{
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+ struct ir_input_dev *ir_dev = dev_get_drvdata(d);
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+ bool enable, disable;
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+ const char *tmp;
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+ u64 type;
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+ u64 mask;
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+ int rc, i, count = 0;
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+ unsigned long flags;
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+
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+ /* Device is being removed */
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+ if (!ir_dev)
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+ return -EINVAL;
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+
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+ if (ir_dev->props && ir_dev->props->driver_type == RC_DRIVER_SCANCODE)
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+ type = ir_dev->rc_tab.ir_type;
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+ else if (ir_dev->raw)
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+ type = ir_dev->raw->enabled_protocols;
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+ else {
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+ IR_dprintk(1, "Protocol switching not supported\n");
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+ return -EINVAL;
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+ }
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+
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+ while ((tmp = strsep((char **) &data, " \n")) != NULL) {
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+ if (!*tmp)
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+ break;
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+
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+ if (*tmp == '+') {
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+ enable = true;
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+ disable = false;
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+ tmp++;
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+ } else if (*tmp == '-') {
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+ enable = false;
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+ disable = true;
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+ tmp++;
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+ } else {
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+ enable = false;
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+ disable = false;
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+ }
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+
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+ if (!enable && !disable && !strncasecmp(tmp, PROTO_NONE, sizeof(PROTO_NONE))) {
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+ tmp += sizeof(PROTO_NONE);
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+ mask = 0;
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+ count++;
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+ } else {
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+ for (i = 0; i < ARRAY_SIZE(proto_names); i++) {
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+ if (!strncasecmp(tmp, proto_names[i].name, strlen(proto_names[i].name))) {
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+ tmp += strlen(proto_names[i].name);
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+ mask = proto_names[i].type;
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+ break;
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+ }
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+ }
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+ if (i == ARRAY_SIZE(proto_names)) {
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+ IR_dprintk(1, "Unknown protocol: '%s'\n", tmp);
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+ return -EINVAL;
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+ }
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+ count++;
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+ }
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+
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+ if (enable)
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+ type |= mask;
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+ else if (disable)
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+ type &= ~mask;
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+ else
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+ type = mask;
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+ }
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+
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+ if (!count) {
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+ IR_dprintk(1, "Protocol not specified\n");
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+ return -EINVAL;
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+ }
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+
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+ if (ir_dev->props && ir_dev->props->change_protocol) {
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+ rc = ir_dev->props->change_protocol(ir_dev->props->priv,
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+ type);
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+ if (rc < 0) {
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+ IR_dprintk(1, "Error setting protocols to 0x%llx\n",
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+ (long long)type);
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+ return -EINVAL;
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+ }
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+ }
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+
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+ if (ir_dev->props && ir_dev->props->driver_type == RC_DRIVER_SCANCODE) {
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+ spin_lock_irqsave(&ir_dev->rc_tab.lock, flags);
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+ ir_dev->rc_tab.ir_type = type;
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+ spin_unlock_irqrestore(&ir_dev->rc_tab.lock, flags);
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+ } else {
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+ ir_dev->raw->enabled_protocols = type;
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+ }
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+
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+ IR_dprintk(1, "Current protocol(s): 0x%llx\n",
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+ (long long)type);
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+
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+ return len;
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+}
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+
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+#define ADD_HOTPLUG_VAR(fmt, val...) \
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+ do { \
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+ int err = add_uevent_var(env, fmt, val); \
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+ if (err) \
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+ return err; \
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+ } while (0)
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+
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+static int rc_dev_uevent(struct device *device, struct kobj_uevent_env *env)
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+{
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+ struct ir_input_dev *ir_dev = dev_get_drvdata(device);
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+
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+ if (ir_dev->rc_tab.name)
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+ ADD_HOTPLUG_VAR("NAME=%s", ir_dev->rc_tab.name);
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+ if (ir_dev->driver_name)
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+ ADD_HOTPLUG_VAR("DRV_NAME=%s", ir_dev->driver_name);
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+
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+ return 0;
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+}
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+
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+/*
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+ * Static device attribute struct with the sysfs attributes for IR's
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+ */
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+static DEVICE_ATTR(protocols, S_IRUGO | S_IWUSR,
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+ show_protocols, store_protocols);
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+
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+static struct attribute *rc_dev_attrs[] = {
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+ &dev_attr_protocols.attr,
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+ NULL,
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+};
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+
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+static struct attribute_group rc_dev_attr_grp = {
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+ .attrs = rc_dev_attrs,
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+};
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+
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+static const struct attribute_group *rc_dev_attr_groups[] = {
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+ &rc_dev_attr_grp,
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+ NULL
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+};
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+
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+static struct device_type rc_dev_type = {
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+ .groups = rc_dev_attr_groups,
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+ .uevent = rc_dev_uevent,
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+};
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+
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+/**
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+ * ir_register_class() - creates the sysfs for /sys/class/rc/rc?
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+ * @input_dev: the struct input_dev descriptor of the device
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+ *
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+ * This routine is used to register the syfs code for IR class
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+ */
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+int ir_register_class(struct input_dev *input_dev)
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+{
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+ struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
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+ int devno = find_first_zero_bit(&ir_core_dev_number,
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+ IRRCV_NUM_DEVICES);
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+
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+ if (unlikely(devno < 0))
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+ return devno;
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+
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+ ir_dev->dev.type = &rc_dev_type;
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+ ir_dev->devno = devno;
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+
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+ ir_dev->dev.class = &ir_input_class;
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+ ir_dev->dev.parent = input_dev->dev.parent;
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+ input_dev->dev.parent = &ir_dev->dev;
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+ dev_set_name(&ir_dev->dev, "rc%d", devno);
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+ dev_set_drvdata(&ir_dev->dev, ir_dev);
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+ return device_register(&ir_dev->dev);
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+};
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+
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+/**
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+ * ir_register_input - registers ir input device with input subsystem
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+ * @input_dev: the struct input_dev descriptor of the device
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+ */
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+
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+int ir_register_input(struct input_dev *input_dev)
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+{
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+ struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
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+ int rc;
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+ const char *path;
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+
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+
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+ rc = input_register_device(input_dev);
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+ if (rc < 0) {
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+ device_del(&ir_dev->dev);
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+ return rc;
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+ }
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+
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+ __module_get(THIS_MODULE);
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+
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+ path = kobject_get_path(&ir_dev->dev.kobj, GFP_KERNEL);
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+ printk(KERN_INFO "%s: %s as %s\n",
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+ dev_name(&ir_dev->dev),
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+ input_dev->name ? input_dev->name : "Unspecified device",
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+ path ? path : "N/A");
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+ kfree(path);
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+
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+ set_bit(ir_dev->devno, &ir_core_dev_number);
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+ return 0;
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+}
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+
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+/**
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+ * ir_unregister_class() - removes the sysfs for sysfs for
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+ * /sys/class/rc/rc?
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+ * @input_dev: the struct input_dev descriptor of the device
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+ *
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+ * This routine is used to unregister the syfs code for IR class
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+ */
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+void ir_unregister_class(struct input_dev *input_dev)
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+{
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+ struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
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+
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+ input_set_drvdata(input_dev, NULL);
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+ clear_bit(ir_dev->devno, &ir_core_dev_number);
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+ input_unregister_device(input_dev);
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+ device_del(&ir_dev->dev);
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+
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+ module_put(THIS_MODULE);
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+}
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+
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+/*
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+ * Init/exit code for the module. Basically, creates/removes /sys/class/rc
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+ */
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+
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+static int __init ir_core_init(void)
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+{
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+ int rc = class_register(&ir_input_class);
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+ if (rc) {
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+ printk(KERN_ERR "ir_core: unable to register rc class\n");
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+ return rc;
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+ }
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+
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+ /* 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);
|
|
|
|
+
|
|
int ir_core_debug; /* ir_debug level (0,1,2) */
|
|
int ir_core_debug; /* ir_debug level (0,1,2) */
|
|
EXPORT_SYMBOL_GPL(ir_core_debug);
|
|
EXPORT_SYMBOL_GPL(ir_core_debug);
|
|
module_param_named(debug, ir_core_debug, int, 0644);
|
|
module_param_named(debug, ir_core_debug, int, 0644);
|