+++ /dev/null
-/*
- * i2c IR lirc driver for devices with zilog IR processors
- *
- * Copyright (c) 2000 Gerd Knorr <kraxel@goldbach.in-berlin.de>
- * modified for PixelView (BT878P+W/FM) by
- * Michal Kochanowicz <mkochano@pld.org.pl>
- * Christoph Bartelmus <lirc@bartelmus.de>
- * modified for KNC ONE TV Station/Anubis Typhoon TView Tuner by
- * Ulrich Mueller <ulrich.mueller42@web.de>
- * modified for Asus TV-Box and Creative/VisionTek BreakOut-Box by
- * Stefan Jahn <stefan@lkcc.org>
- * modified for inclusion into kernel sources by
- * Jerome Brock <jbrock@users.sourceforge.net>
- * modified for Leadtek Winfast PVR2000 by
- * Thomas Reitmayr (treitmayr@yahoo.com)
- * modified for Hauppauge PVR-150 IR TX device by
- * Mark Weaver <mark@npsl.co.uk>
- * changed name from lirc_pvr150 to lirc_zilog, works on more than pvr-150
- * Jarod Wilson <jarod@redhat.com>
- *
- * parts are cut&pasted from the lirc_i2c.c driver
- *
- * Numerous changes updating lirc_zilog.c in kernel 2.6.38 and later are
- * Copyright (C) 2011 Andy Walls <awalls@md.metrocast.net>
- *
- * 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; either version 2 of the License, or
- * (at your option) any later version.
- *
- * 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.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- */
-
-#include <linux/module.h>
-#include <linux/kmod.h>
-#include <linux/kernel.h>
-#include <linux/sched/signal.h>
-#include <linux/fs.h>
-#include <linux/poll.h>
-#include <linux/string.h>
-#include <linux/timer.h>
-#include <linux/delay.h>
-#include <linux/completion.h>
-#include <linux/errno.h>
-#include <linux/slab.h>
-#include <linux/i2c.h>
-#include <linux/firmware.h>
-#include <linux/vmalloc.h>
-
-#include <linux/mutex.h>
-#include <linux/kthread.h>
-
-#include <media/lirc_dev.h>
-#include <media/lirc.h>
-
-/* Max transfer size done by I2C transfer functions */
-#define MAX_XFER_SIZE 64
-
-struct IR;
-
-struct IR_rx {
- struct kref ref;
- struct IR *ir;
-
- /* RX device */
- struct mutex client_lock;
- struct i2c_client *c;
-
- /* RX polling thread data */
- struct task_struct *task;
-
- /* RX read data */
- unsigned char b[3];
- bool hdpvr_data_fmt;
-};
-
-struct IR_tx {
- struct kref ref;
- struct IR *ir;
-
- /* TX device */
- struct mutex client_lock;
- struct i2c_client *c;
-
- /* TX additional actions needed */
- int need_boot;
- bool post_tx_ready_poll;
-};
-
-struct IR {
- struct kref ref;
- struct list_head list;
-
- /* FIXME spinlock access to l->features */
- struct lirc_dev *l;
- struct lirc_buffer rbuf;
-
- struct mutex ir_lock;
- atomic_t open_count;
-
- struct device *dev;
- struct i2c_adapter *adapter;
-
- spinlock_t rx_ref_lock; /* struct IR_rx kref get()/put() */
- struct IR_rx *rx;
-
- spinlock_t tx_ref_lock; /* struct IR_tx kref get()/put() */
- struct IR_tx *tx;
-};
-
-/* IR transceiver instance object list */
-/*
- * This lock is used for the following:
- * a. ir_devices_list access, insertions, deletions
- * b. struct IR kref get()s and put()s
- * c. serialization of ir_probe() for the two i2c_clients for a Z8
- */
-static DEFINE_MUTEX(ir_devices_lock);
-static LIST_HEAD(ir_devices_list);
-
-/* Block size for IR transmitter */
-#define TX_BLOCK_SIZE 99
-
-/* Hauppauge IR transmitter data */
-struct tx_data_struct {
- /* Boot block */
- unsigned char *boot_data;
-
- /* Start of binary data block */
- unsigned char *datap;
-
- /* End of binary data block */
- unsigned char *endp;
-
- /* Number of installed codesets */
- unsigned int num_code_sets;
-
- /* Pointers to codesets */
- unsigned char **code_sets;
-
- /* Global fixed data template */
- int fixed[TX_BLOCK_SIZE];
-};
-
-static struct tx_data_struct *tx_data;
-static struct mutex tx_data_lock;
-
-
-/* module parameters */
-static bool debug; /* debug output */
-static bool tx_only; /* only handle the IR Tx function */
-
-
-/* struct IR reference counting */
-static struct IR *get_ir_device(struct IR *ir, bool ir_devices_lock_held)
-{
- if (ir_devices_lock_held) {
- kref_get(&ir->ref);
- } else {
- mutex_lock(&ir_devices_lock);
- kref_get(&ir->ref);
- mutex_unlock(&ir_devices_lock);
- }
- return ir;
-}
-
-static void release_ir_device(struct kref *ref)
-{
- struct IR *ir = container_of(ref, struct IR, ref);
-
- /*
- * Things should be in this state by now:
- * ir->rx set to NULL and deallocated - happens before ir->rx->ir put()
- * ir->rx->task kthread stopped - happens before ir->rx->ir put()
- * ir->tx set to NULL and deallocated - happens before ir->tx->ir put()
- * ir->open_count == 0 - happens on final close()
- * ir_lock, tx_ref_lock, rx_ref_lock, all released
- */
- if (ir->l)
- lirc_unregister_device(ir->l);
-
- if (kfifo_initialized(&ir->rbuf.fifo))
- lirc_buffer_free(&ir->rbuf);
- list_del(&ir->list);
- kfree(ir);
-}
-
-static int put_ir_device(struct IR *ir, bool ir_devices_lock_held)
-{
- int released;
-
- if (ir_devices_lock_held)
- return kref_put(&ir->ref, release_ir_device);
-
- mutex_lock(&ir_devices_lock);
- released = kref_put(&ir->ref, release_ir_device);
- mutex_unlock(&ir_devices_lock);
-
- return released;
-}
-
-/* struct IR_rx reference counting */
-static struct IR_rx *get_ir_rx(struct IR *ir)
-{
- struct IR_rx *rx;
-
- spin_lock(&ir->rx_ref_lock);
- rx = ir->rx;
- if (rx)
- kref_get(&rx->ref);
- spin_unlock(&ir->rx_ref_lock);
- return rx;
-}
-
-static void destroy_rx_kthread(struct IR_rx *rx, bool ir_devices_lock_held)
-{
- /* end up polling thread */
- if (!IS_ERR_OR_NULL(rx->task)) {
- kthread_stop(rx->task);
- rx->task = NULL;
- /* Put the ir ptr that ir_probe() gave to the rx poll thread */
- put_ir_device(rx->ir, ir_devices_lock_held);
- }
-}
-
-static void release_ir_rx(struct kref *ref)
-{
- struct IR_rx *rx = container_of(ref, struct IR_rx, ref);
- struct IR *ir = rx->ir;
-
- /*
- * This release function can't do all the work, as we want
- * to keep the rx_ref_lock a spinlock, and killing the poll thread
- * and releasing the ir reference can cause a sleep. That work is
- * performed by put_ir_rx()
- */
- ir->l->features &= ~LIRC_CAN_REC_LIRCCODE;
- /* Don't put_ir_device(rx->ir) here; lock can't be freed yet */
- ir->rx = NULL;
- /* Don't do the kfree(rx) here; we still need to kill the poll thread */
-}
-
-static int put_ir_rx(struct IR_rx *rx, bool ir_devices_lock_held)
-{
- int released;
- struct IR *ir = rx->ir;
-
- spin_lock(&ir->rx_ref_lock);
- released = kref_put(&rx->ref, release_ir_rx);
- spin_unlock(&ir->rx_ref_lock);
- /* Destroy the rx kthread while not holding the spinlock */
- if (released) {
- destroy_rx_kthread(rx, ir_devices_lock_held);
- kfree(rx);
- /* Make sure we're not still in a poll_table somewhere */
- wake_up_interruptible(&ir->rbuf.wait_poll);
- }
- /* Do a reference put() for the rx->ir reference, if we released rx */
- if (released)
- put_ir_device(ir, ir_devices_lock_held);
- return released;
-}
-
-/* struct IR_tx reference counting */
-static struct IR_tx *get_ir_tx(struct IR *ir)
-{
- struct IR_tx *tx;
-
- spin_lock(&ir->tx_ref_lock);
- tx = ir->tx;
- if (tx)
- kref_get(&tx->ref);
- spin_unlock(&ir->tx_ref_lock);
- return tx;
-}
-
-static void release_ir_tx(struct kref *ref)
-{
- struct IR_tx *tx = container_of(ref, struct IR_tx, ref);
- struct IR *ir = tx->ir;
-
- ir->l->features &= ~LIRC_CAN_SEND_LIRCCODE;
- /* Don't put_ir_device(tx->ir) here, so our lock doesn't get freed */
- ir->tx = NULL;
- kfree(tx);
-}
-
-static int put_ir_tx(struct IR_tx *tx, bool ir_devices_lock_held)
-{
- int released;
- struct IR *ir = tx->ir;
-
- spin_lock(&ir->tx_ref_lock);
- released = kref_put(&tx->ref, release_ir_tx);
- spin_unlock(&ir->tx_ref_lock);
- /* Do a reference put() for the tx->ir reference, if we released tx */
- if (released)
- put_ir_device(ir, ir_devices_lock_held);
- return released;
-}
-
-static int add_to_buf(struct IR *ir)
-{
- __u16 code;
- unsigned char codes[2];
- unsigned char keybuf[6];
- int got_data = 0;
- int ret;
- int failures = 0;
- unsigned char sendbuf[1] = { 0 };
- struct lirc_buffer *rbuf = ir->l->buf;
- struct IR_rx *rx;
- struct IR_tx *tx;
-
- if (lirc_buffer_full(rbuf)) {
- dev_dbg(ir->dev, "buffer overflow\n");
- return -EOVERFLOW;
- }
-
- rx = get_ir_rx(ir);
- if (!rx)
- return -ENXIO;
-
- /* Ensure our rx->c i2c_client remains valid for the duration */
- mutex_lock(&rx->client_lock);
- if (!rx->c) {
- mutex_unlock(&rx->client_lock);
- put_ir_rx(rx, false);
- return -ENXIO;
- }
-
- tx = get_ir_tx(ir);
-
- /*
- * service the device as long as it is returning
- * data and we have space
- */
- do {
- if (kthread_should_stop()) {
- ret = -ENODATA;
- break;
- }
-
- /*
- * Lock i2c bus for the duration. RX/TX chips interfere so
- * this is worth it
- */
- mutex_lock(&ir->ir_lock);
-
- if (kthread_should_stop()) {
- mutex_unlock(&ir->ir_lock);
- ret = -ENODATA;
- break;
- }
-
- /*
- * Send random "poll command" (?) Windows driver does this
- * and it is a good point to detect chip failure.
- */
- ret = i2c_master_send(rx->c, sendbuf, 1);
- if (ret != 1) {
- dev_err(ir->dev, "i2c_master_send failed with %d\n",
- ret);
- if (failures >= 3) {
- mutex_unlock(&ir->ir_lock);
- dev_err(ir->dev,
- "unable to read from the IR chip after 3 resets, giving up\n");
- break;
- }
-
- /* Looks like the chip crashed, reset it */
- dev_err(ir->dev,
- "polling the IR receiver chip failed, trying reset\n");
-
- set_current_state(TASK_UNINTERRUPTIBLE);
- if (kthread_should_stop()) {
- mutex_unlock(&ir->ir_lock);
- ret = -ENODATA;
- break;
- }
- schedule_timeout((100 * HZ + 999) / 1000);
- if (tx)
- tx->need_boot = 1;
-
- ++failures;
- mutex_unlock(&ir->ir_lock);
- ret = 0;
- continue;
- }
-
- if (kthread_should_stop()) {
- mutex_unlock(&ir->ir_lock);
- ret = -ENODATA;
- break;
- }
- ret = i2c_master_recv(rx->c, keybuf, sizeof(keybuf));
- mutex_unlock(&ir->ir_lock);
- if (ret != sizeof(keybuf)) {
- dev_err(ir->dev,
- "i2c_master_recv failed with %d -- keeping last read buffer\n",
- ret);
- } else {
- rx->b[0] = keybuf[3];
- rx->b[1] = keybuf[4];
- rx->b[2] = keybuf[5];
- dev_dbg(ir->dev,
- "key (0x%02x/0x%02x)\n",
- rx->b[0], rx->b[1]);
- }
-
- /* key pressed ? */
- if (rx->hdpvr_data_fmt) {
- if (got_data && (keybuf[0] == 0x80)) {
- ret = 0;
- break;
- } else if (got_data && (keybuf[0] == 0x00)) {
- ret = -ENODATA;
- break;
- }
- } else if ((rx->b[0] & 0x80) == 0) {
- ret = got_data ? 0 : -ENODATA;
- break;
- }
-
- /* look what we have */
- code = (((__u16)rx->b[0] & 0x7f) << 6) | (rx->b[1] >> 2);
-
- codes[0] = (code >> 8) & 0xff;
- codes[1] = code & 0xff;
-
- /* return it */
- lirc_buffer_write(rbuf, codes);
- ++got_data;
- ret = 0;
- } while (!lirc_buffer_full(rbuf));
-
- mutex_unlock(&rx->client_lock);
- if (tx)
- put_ir_tx(tx, false);
- put_ir_rx(rx, false);
- return ret;
-}
-
-/*
- * Main function of the polling thread -- from lirc_dev.
- * We don't fit the LIRC model at all anymore. This is horrible, but
- * basically we have a single RX/TX device with a nasty failure mode
- * that needs to be accounted for across the pair. lirc lets us provide
- * fops, but prevents us from using the internal polling, etc. if we do
- * so. Hence the replication. Might be neater to extend the LIRC model
- * to account for this but I'd think it's a very special case of seriously
- * messed up hardware.
- */
-static int lirc_thread(void *arg)
-{
- struct IR *ir = arg;
- struct lirc_buffer *rbuf = ir->l->buf;
-
- dev_dbg(ir->dev, "poll thread started\n");
-
- while (!kthread_should_stop()) {
- set_current_state(TASK_INTERRUPTIBLE);
-
- /* if device not opened, we can sleep half a second */
- if (atomic_read(&ir->open_count) == 0) {
- schedule_timeout(HZ / 2);
- continue;
- }
-
- /*
- * This is ~113*2 + 24 + jitter (2*repeat gap + code length).
- * We use this interval as the chip resets every time you poll
- * it (bad!). This is therefore just sufficient to catch all
- * of the button presses. It makes the remote much more
- * responsive. You can see the difference by running irw and
- * holding down a button. With 100ms, the old polling
- * interval, you'll notice breaks in the repeat sequence
- * corresponding to lost keypresses.
- */
- schedule_timeout((260 * HZ) / 1000);
- if (kthread_should_stop())
- break;
- if (!add_to_buf(ir))
- wake_up_interruptible(&rbuf->wait_poll);
- }
-
- dev_dbg(ir->dev, "poll thread ended\n");
- return 0;
-}
-
-/* safe read of a uint32 (always network byte order) */
-static int read_uint32(unsigned char **data,
- unsigned char *endp, unsigned int *val)
-{
- if (*data + 4 > endp)
- return 0;
- *val = ((*data)[0] << 24) | ((*data)[1] << 16) |
- ((*data)[2] << 8) | (*data)[3];
- *data += 4;
- return 1;
-}
-
-/* safe read of a uint8 */
-static int read_uint8(unsigned char **data,
- unsigned char *endp, unsigned char *val)
-{
- if (*data + 1 > endp)
- return 0;
- *val = *((*data)++);
- return 1;
-}
-
-/* safe skipping of N bytes */
-static int skip(unsigned char **data,
- unsigned char *endp, unsigned int distance)
-{
- if (*data + distance > endp)
- return 0;
- *data += distance;
- return 1;
-}
-
-/* decompress key data into the given buffer */
-static int get_key_data(unsigned char *buf,
- unsigned int codeset, unsigned int key)
-{
- unsigned char *data, *endp, *diffs, *key_block;
- unsigned char keys, ndiffs, id;
- unsigned int base, lim, pos, i;
-
- /* Binary search for the codeset */
- for (base = 0, lim = tx_data->num_code_sets; lim; lim >>= 1) {
- pos = base + (lim >> 1);
- data = tx_data->code_sets[pos];
-
- if (!read_uint32(&data, tx_data->endp, &i))
- goto corrupt;
-
- if (i == codeset) {
- break;
- } else if (codeset > i) {
- base = pos + 1;
- --lim;
- }
- }
- /* Not found? */
- if (!lim)
- return -EPROTO;
-
- /* Set end of data block */
- endp = pos < tx_data->num_code_sets - 1 ?
- tx_data->code_sets[pos + 1] : tx_data->endp;
-
- /* Read the block header */
- if (!read_uint8(&data, endp, &keys) ||
- !read_uint8(&data, endp, &ndiffs) ||
- ndiffs > TX_BLOCK_SIZE || keys == 0)
- goto corrupt;
-
- /* Save diffs & skip */
- diffs = data;
- if (!skip(&data, endp, ndiffs))
- goto corrupt;
-
- /* Read the id of the first key */
- if (!read_uint8(&data, endp, &id))
- goto corrupt;
-
- /* Unpack the first key's data */
- for (i = 0; i < TX_BLOCK_SIZE; ++i) {
- if (tx_data->fixed[i] == -1) {
- if (!read_uint8(&data, endp, &buf[i]))
- goto corrupt;
- } else {
- buf[i] = (unsigned char)tx_data->fixed[i];
- }
- }
-
- /* Early out key found/not found */
- if (key == id)
- return 0;
- if (keys == 1)
- return -EPROTO;
-
- /* Sanity check */
- key_block = data;
- if (!skip(&data, endp, (keys - 1) * (ndiffs + 1)))
- goto corrupt;
-
- /* Binary search for the key */
- for (base = 0, lim = keys - 1; lim; lim >>= 1) {
- /* Seek to block */
- unsigned char *key_data;
-
- pos = base + (lim >> 1);
- key_data = key_block + (ndiffs + 1) * pos;
-
- if (*key_data == key) {
- /* skip key id */
- ++key_data;
-
- /* found, so unpack the diffs */
- for (i = 0; i < ndiffs; ++i) {
- unsigned char val;
-
- if (!read_uint8(&key_data, endp, &val) ||
- diffs[i] >= TX_BLOCK_SIZE)
- goto corrupt;
- buf[diffs[i]] = val;
- }
-
- return 0;
- } else if (key > *key_data) {
- base = pos + 1;
- --lim;
- }
- }
- /* Key not found */
- return -EPROTO;
-
-corrupt:
- pr_err("firmware is corrupt\n");
- return -EFAULT;
-}
-
-/* send a block of data to the IR TX device */
-static int send_data_block(struct IR_tx *tx, unsigned char *data_block)
-{
- int i, j, ret;
- unsigned char buf[5];
-
- for (i = 0; i < TX_BLOCK_SIZE;) {
- int tosend = TX_BLOCK_SIZE - i;
-
- if (tosend > 4)
- tosend = 4;
- buf[0] = (unsigned char)(i + 1);
- for (j = 0; j < tosend; ++j)
- buf[1 + j] = data_block[i + j];
- dev_dbg(tx->ir->dev, "%*ph", 5, buf);
- ret = i2c_master_send(tx->c, buf, tosend + 1);
- if (ret != tosend + 1) {
- dev_err(tx->ir->dev,
- "i2c_master_send failed with %d\n", ret);
- return ret < 0 ? ret : -EFAULT;
- }
- i += tosend;
- }
- return 0;
-}
-
-/* send boot data to the IR TX device */
-static int send_boot_data(struct IR_tx *tx)
-{
- int ret, i;
- unsigned char buf[4];
-
- /* send the boot block */
- ret = send_data_block(tx, tx_data->boot_data);
- if (ret != 0)
- return ret;
-
- /* Hit the go button to activate the new boot data */
- buf[0] = 0x00;
- buf[1] = 0x20;
- ret = i2c_master_send(tx->c, buf, 2);
- if (ret != 2) {
- dev_err(tx->ir->dev, "i2c_master_send failed with %d\n", ret);
- return ret < 0 ? ret : -EFAULT;
- }
-
- /*
- * Wait for zilog to settle after hitting go post boot block upload.
- * Without this delay, the HD-PVR and HVR-1950 both return an -EIO
- * upon attempting to get firmware revision, and tx probe thus fails.
- */
- for (i = 0; i < 10; i++) {
- ret = i2c_master_send(tx->c, buf, 1);
- if (ret == 1)
- break;
- udelay(100);
- }
-
- if (ret != 1) {
- dev_err(tx->ir->dev, "i2c_master_send failed with %d\n", ret);
- return ret < 0 ? ret : -EFAULT;
- }
-
- /* Here comes the firmware version... (hopefully) */
- ret = i2c_master_recv(tx->c, buf, 4);
- if (ret != 4) {
- dev_err(tx->ir->dev, "i2c_master_recv failed with %d\n", ret);
- return 0;
- }
- if ((buf[0] != 0x80) && (buf[0] != 0xa0)) {
- dev_err(tx->ir->dev, "unexpected IR TX init response: %02x\n",
- buf[0]);
- return 0;
- }
- dev_notice(tx->ir->dev,
- "Zilog/Hauppauge IR blaster firmware version %d.%d.%d loaded\n",
- buf[1], buf[2], buf[3]);
-
- return 0;
-}
-
-/* unload "firmware", lock held */
-static void fw_unload_locked(void)
-{
- if (tx_data) {
- vfree(tx_data->code_sets);
-
- vfree(tx_data->datap);
-
- vfree(tx_data);
- tx_data = NULL;
- pr_debug("successfully unloaded IR blaster firmware\n");
- }
-}
-
-/* unload "firmware" for the IR TX device */
-static void fw_unload(void)
-{
- mutex_lock(&tx_data_lock);
- fw_unload_locked();
- mutex_unlock(&tx_data_lock);
-}
-
-/* load "firmware" for the IR TX device */
-static int fw_load(struct IR_tx *tx)
-{
- int ret;
- unsigned int i;
- unsigned char *data, version, num_global_fixed;
- const struct firmware *fw_entry;
-
- /* Already loaded? */
- mutex_lock(&tx_data_lock);
- if (tx_data) {
- ret = 0;
- goto out;
- }
-
- /* Request codeset data file */
- ret = request_firmware(&fw_entry, "haup-ir-blaster.bin", tx->ir->dev);
- if (ret != 0) {
- dev_err(tx->ir->dev,
- "firmware haup-ir-blaster.bin not available (%d)\n",
- ret);
- ret = ret < 0 ? ret : -EFAULT;
- goto out;
- }
- dev_dbg(tx->ir->dev, "firmware of size %zu loaded\n", fw_entry->size);
-
- /* Parse the file */
- tx_data = vmalloc(sizeof(*tx_data));
- if (!tx_data) {
- release_firmware(fw_entry);
- ret = -ENOMEM;
- goto out;
- }
- tx_data->code_sets = NULL;
-
- /* Copy the data so hotplug doesn't get confused and timeout */
- tx_data->datap = vmalloc(fw_entry->size);
- if (!tx_data->datap) {
- release_firmware(fw_entry);
- vfree(tx_data);
- ret = -ENOMEM;
- goto out;
- }
- memcpy(tx_data->datap, fw_entry->data, fw_entry->size);
- tx_data->endp = tx_data->datap + fw_entry->size;
- release_firmware(fw_entry); fw_entry = NULL;
-
- /* Check version */
- data = tx_data->datap;
- if (!read_uint8(&data, tx_data->endp, &version))
- goto corrupt;
- if (version != 1) {
- dev_err(tx->ir->dev,
- "unsupported code set file version (%u, expected 1) -- please upgrade to a newer driver\n",
- version);
- fw_unload_locked();
- ret = -EFAULT;
- goto out;
- }
-
- /* Save boot block for later */
- tx_data->boot_data = data;
- if (!skip(&data, tx_data->endp, TX_BLOCK_SIZE))
- goto corrupt;
-
- if (!read_uint32(&data, tx_data->endp,
- &tx_data->num_code_sets))
- goto corrupt;
-
- dev_dbg(tx->ir->dev, "%u IR blaster codesets loaded\n",
- tx_data->num_code_sets);
-
- tx_data->code_sets = vmalloc(
- tx_data->num_code_sets * sizeof(char *));
- if (!tx_data->code_sets) {
- fw_unload_locked();
- ret = -ENOMEM;
- goto out;
- }
-
- for (i = 0; i < TX_BLOCK_SIZE; ++i)
- tx_data->fixed[i] = -1;
-
- /* Read global fixed data template */
- if (!read_uint8(&data, tx_data->endp, &num_global_fixed) ||
- num_global_fixed > TX_BLOCK_SIZE)
- goto corrupt;
- for (i = 0; i < num_global_fixed; ++i) {
- unsigned char pos, val;
-
- if (!read_uint8(&data, tx_data->endp, &pos) ||
- !read_uint8(&data, tx_data->endp, &val) ||
- pos >= TX_BLOCK_SIZE)
- goto corrupt;
- tx_data->fixed[pos] = (int)val;
- }
-
- /* Filch out the position of each code set */
- for (i = 0; i < tx_data->num_code_sets; ++i) {
- unsigned int id;
- unsigned char keys;
- unsigned char ndiffs;
-
- /* Save the codeset position */
- tx_data->code_sets[i] = data;
-
- /* Read header */
- if (!read_uint32(&data, tx_data->endp, &id) ||
- !read_uint8(&data, tx_data->endp, &keys) ||
- !read_uint8(&data, tx_data->endp, &ndiffs) ||
- ndiffs > TX_BLOCK_SIZE || keys == 0)
- goto corrupt;
-
- /* skip diff positions */
- if (!skip(&data, tx_data->endp, ndiffs))
- goto corrupt;
-
- /*
- * After the diffs we have the first key id + data -
- * global fixed
- */
- if (!skip(&data, tx_data->endp,
- 1 + TX_BLOCK_SIZE - num_global_fixed))
- goto corrupt;
-
- /* Then we have keys-1 blocks of key id+diffs */
- if (!skip(&data, tx_data->endp,
- (ndiffs + 1) * (keys - 1)))
- goto corrupt;
- }
- ret = 0;
- goto out;
-
-corrupt:
- dev_err(tx->ir->dev, "firmware is corrupt\n");
- fw_unload_locked();
- ret = -EFAULT;
-
-out:
- mutex_unlock(&tx_data_lock);
- return ret;
-}
-
-/* copied from lirc_dev */
-static ssize_t read(struct file *filep, char __user *outbuf, size_t n,
- loff_t *ppos)
-{
- struct IR *ir = lirc_get_pdata(filep);
- struct IR_rx *rx;
- struct lirc_buffer *rbuf = ir->l->buf;
- int ret = 0, written = 0, retries = 0;
- unsigned int m;
- DECLARE_WAITQUEUE(wait, current);
-
- dev_dbg(ir->dev, "read called\n");
- if (n % rbuf->chunk_size) {
- dev_dbg(ir->dev, "read result = -EINVAL\n");
- return -EINVAL;
- }
-
- rx = get_ir_rx(ir);
- if (!rx)
- return -ENXIO;
-
- /*
- * we add ourselves to the task queue before buffer check
- * to avoid losing scan code (in case when queue is awaken somewhere
- * between while condition checking and scheduling)
- */
- add_wait_queue(&rbuf->wait_poll, &wait);
- set_current_state(TASK_INTERRUPTIBLE);
-
- /*
- * while we didn't provide 'length' bytes, device is opened in blocking
- * mode and 'copy_to_user' is happy, wait for data.
- */
- while (written < n && ret == 0) {
- if (lirc_buffer_empty(rbuf)) {
- /*
- * According to the read(2) man page, 'written' can be
- * returned as less than 'n', instead of blocking
- * again, returning -EWOULDBLOCK, or returning
- * -ERESTARTSYS
- */
- if (written)
- break;
- if (filep->f_flags & O_NONBLOCK) {
- ret = -EWOULDBLOCK;
- break;
- }
- if (signal_pending(current)) {
- ret = -ERESTARTSYS;
- break;
- }
- schedule();
- set_current_state(TASK_INTERRUPTIBLE);
- } else {
- unsigned char buf[MAX_XFER_SIZE];
-
- if (rbuf->chunk_size > sizeof(buf)) {
- dev_err(ir->dev,
- "chunk_size is too big (%d)!\n",
- rbuf->chunk_size);
- ret = -EINVAL;
- break;
- }
- m = lirc_buffer_read(rbuf, buf);
- if (m == rbuf->chunk_size) {
- ret = copy_to_user(outbuf + written, buf,
- rbuf->chunk_size);
- written += rbuf->chunk_size;
- } else {
- retries++;
- }
- if (retries >= 5) {
- dev_err(ir->dev, "Buffer read failed!\n");
- ret = -EIO;
- }
- }
- }
-
- remove_wait_queue(&rbuf->wait_poll, &wait);
- put_ir_rx(rx, false);
- set_current_state(TASK_RUNNING);
-
- dev_dbg(ir->dev, "read result = %d (%s)\n", ret,
- ret ? "Error" : "OK");
-
- return ret ? ret : written;
-}
-
-/* send a keypress to the IR TX device */
-static int send_code(struct IR_tx *tx, unsigned int code, unsigned int key)
-{
- unsigned char data_block[TX_BLOCK_SIZE];
- unsigned char buf[2];
- int i, ret;
-
- /* Get data for the codeset/key */
- ret = get_key_data(data_block, code, key);
-
- if (ret == -EPROTO) {
- dev_err(tx->ir->dev,
- "failed to get data for code %u, key %u -- check lircd.conf entries\n",
- code, key);
- return ret;
- } else if (ret != 0) {
- return ret;
- }
-
- /* Send the data block */
- ret = send_data_block(tx, data_block);
- if (ret != 0)
- return ret;
-
- /* Send data block length? */
- buf[0] = 0x00;
- buf[1] = 0x40;
- ret = i2c_master_send(tx->c, buf, 2);
- if (ret != 2) {
- dev_err(tx->ir->dev, "i2c_master_send failed with %d\n", ret);
- return ret < 0 ? ret : -EFAULT;
- }
-
- /* Give the z8 a moment to process data block */
- for (i = 0; i < 10; i++) {
- ret = i2c_master_send(tx->c, buf, 1);
- if (ret == 1)
- break;
- udelay(100);
- }
-
- if (ret != 1) {
- dev_err(tx->ir->dev, "i2c_master_send failed with %d\n", ret);
- return ret < 0 ? ret : -EFAULT;
- }
-
- /* Send finished download? */
- ret = i2c_master_recv(tx->c, buf, 1);
- if (ret != 1) {
- dev_err(tx->ir->dev, "i2c_master_recv failed with %d\n", ret);
- return ret < 0 ? ret : -EFAULT;
- }
- if (buf[0] != 0xA0) {
- dev_err(tx->ir->dev, "unexpected IR TX response #1: %02x\n",
- buf[0]);
- return -EFAULT;
- }
-
- /* Send prepare command? */
- buf[0] = 0x00;
- buf[1] = 0x80;
- ret = i2c_master_send(tx->c, buf, 2);
- if (ret != 2) {
- dev_err(tx->ir->dev, "i2c_master_send failed with %d\n", ret);
- return ret < 0 ? ret : -EFAULT;
- }
-
- /*
- * The sleep bits aren't necessary on the HD PVR, and in fact, the
- * last i2c_master_recv always fails with a -5, so for now, we're
- * going to skip this whole mess and say we're done on the HD PVR
- */
- if (!tx->post_tx_ready_poll) {
- dev_dbg(tx->ir->dev, "sent code %u, key %u\n", code, key);
- return 0;
- }
-
- /*
- * This bit NAKs until the device is ready, so we retry it
- * sleeping a bit each time. This seems to be what the windows
- * driver does, approximately.
- * Try for up to 1s.
- */
- for (i = 0; i < 20; ++i) {
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout((50 * HZ + 999) / 1000);
- ret = i2c_master_send(tx->c, buf, 1);
- if (ret == 1)
- break;
- dev_dbg(tx->ir->dev,
- "NAK expected: i2c_master_send failed with %d (try %d)\n",
- ret, i + 1);
- }
- if (ret != 1) {
- dev_err(tx->ir->dev,
- "IR TX chip never got ready: last i2c_master_send failed with %d\n",
- ret);
- return ret < 0 ? ret : -EFAULT;
- }
-
- /* Seems to be an 'ok' response */
- i = i2c_master_recv(tx->c, buf, 1);
- if (i != 1) {
- dev_err(tx->ir->dev, "i2c_master_recv failed with %d\n", ret);
- return -EFAULT;
- }
- if (buf[0] != 0x80) {
- dev_err(tx->ir->dev, "unexpected IR TX response #2: %02x\n",
- buf[0]);
- return -EFAULT;
- }
-
- /* Oh good, it worked */
- dev_dbg(tx->ir->dev, "sent code %u, key %u\n", code, key);
- return 0;
-}
-
-/*
- * Write a code to the device. We take in a 32-bit number (an int) and then
- * decode this to a codeset/key index. The key data is then decompressed and
- * sent to the device. We have a spin lock as per i2c documentation to prevent
- * multiple concurrent sends which would probably cause the device to explode.
- */
-static ssize_t write(struct file *filep, const char __user *buf, size_t n,
- loff_t *ppos)
-{
- struct IR *ir = lirc_get_pdata(filep);
- struct IR_tx *tx;
- size_t i;
- int failures = 0;
-
- /* Validate user parameters */
- if (n % sizeof(int))
- return -EINVAL;
-
- /* Get a struct IR_tx reference */
- tx = get_ir_tx(ir);
- if (!tx)
- return -ENXIO;
-
- /* Ensure our tx->c i2c_client remains valid for the duration */
- mutex_lock(&tx->client_lock);
- if (!tx->c) {
- mutex_unlock(&tx->client_lock);
- put_ir_tx(tx, false);
- return -ENXIO;
- }
-
- /* Lock i2c bus for the duration */
- mutex_lock(&ir->ir_lock);
-
- /* Send each keypress */
- for (i = 0; i < n;) {
- int ret = 0;
- int command;
-
- if (copy_from_user(&command, buf + i, sizeof(command))) {
- mutex_unlock(&ir->ir_lock);
- mutex_unlock(&tx->client_lock);
- put_ir_tx(tx, false);
- return -EFAULT;
- }
-
- /* Send boot data first if required */
- if (tx->need_boot == 1) {
- /* Make sure we have the 'firmware' loaded, first */
- ret = fw_load(tx);
- if (ret != 0) {
- mutex_unlock(&ir->ir_lock);
- mutex_unlock(&tx->client_lock);
- put_ir_tx(tx, false);
- if (ret != -ENOMEM)
- ret = -EIO;
- return ret;
- }
- /* Prep the chip for transmitting codes */
- ret = send_boot_data(tx);
- if (ret == 0)
- tx->need_boot = 0;
- }
-
- /* Send the code */
- if (ret == 0) {
- ret = send_code(tx, (unsigned int)command >> 16,
- (unsigned int)command & 0xFFFF);
- if (ret == -EPROTO) {
- mutex_unlock(&ir->ir_lock);
- mutex_unlock(&tx->client_lock);
- put_ir_tx(tx, false);
- return ret;
- }
- }
-
- /*
- * Hmm, a failure. If we've had a few then give up, otherwise
- * try a reset
- */
- if (ret != 0) {
- /* Looks like the chip crashed, reset it */
- dev_err(tx->ir->dev,
- "sending to the IR transmitter chip failed, trying reset\n");
-
- if (failures >= 3) {
- dev_err(tx->ir->dev,
- "unable to send to the IR chip after 3 resets, giving up\n");
- mutex_unlock(&ir->ir_lock);
- mutex_unlock(&tx->client_lock);
- put_ir_tx(tx, false);
- return ret;
- }
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout((100 * HZ + 999) / 1000);
- tx->need_boot = 1;
- ++failures;
- } else {
- i += sizeof(int);
- }
- }
-
- /* Release i2c bus */
- mutex_unlock(&ir->ir_lock);
-
- mutex_unlock(&tx->client_lock);
-
- /* Give back our struct IR_tx reference */
- put_ir_tx(tx, false);
-
- /* All looks good */
- return n;
-}
-
-/* copied from lirc_dev */
-static unsigned int poll(struct file *filep, poll_table *wait)
-{
- struct IR *ir = lirc_get_pdata(filep);
- struct IR_rx *rx;
- struct lirc_buffer *rbuf = ir->l->buf;
- unsigned int ret;
-
- dev_dbg(ir->dev, "%s called\n", __func__);
-
- rx = get_ir_rx(ir);
- if (!rx) {
- /*
- * Revisit this, if our poll function ever reports writeable
- * status for Tx
- */
- dev_dbg(ir->dev, "%s result = POLLERR\n", __func__);
- return POLLERR;
- }
-
- /*
- * Add our lirc_buffer's wait_queue to the poll_table. A wake up on
- * that buffer's wait queue indicates we may have a new poll status.
- */
- poll_wait(filep, &rbuf->wait_poll, wait);
-
- /* Indicate what ops could happen immediately without blocking */
- ret = lirc_buffer_empty(rbuf) ? 0 : (POLLIN | POLLRDNORM);
-
- dev_dbg(ir->dev, "%s result = %s\n", __func__,
- ret ? "POLLIN|POLLRDNORM" : "none");
- return ret;
-}
-
-static long ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
-{
- struct IR *ir = lirc_get_pdata(filep);
- unsigned long __user *uptr = (unsigned long __user *)arg;
- int result;
- unsigned long mode, features;
-
- features = ir->l->features;
-
- switch (cmd) {
- case LIRC_GET_LENGTH:
- result = put_user(13UL, uptr);
- break;
- case LIRC_GET_FEATURES:
- result = put_user(features, uptr);
- break;
- case LIRC_GET_REC_MODE:
- if (!(features & LIRC_CAN_REC_MASK))
- return -ENOTTY;
-
- result = put_user(LIRC_REC2MODE
- (features & LIRC_CAN_REC_MASK),
- uptr);
- break;
- case LIRC_SET_REC_MODE:
- if (!(features & LIRC_CAN_REC_MASK))
- return -ENOTTY;
-
- result = get_user(mode, uptr);
- if (!result && !(LIRC_MODE2REC(mode) & features))
- result = -ENOTTY;
- break;
- case LIRC_GET_SEND_MODE:
- if (!(features & LIRC_CAN_SEND_MASK))
- return -ENOTTY;
-
- result = put_user(LIRC_MODE_LIRCCODE, uptr);
- break;
- case LIRC_SET_SEND_MODE:
- if (!(features & LIRC_CAN_SEND_MASK))
- return -ENOTTY;
-
- result = get_user(mode, uptr);
- if (!result && mode != LIRC_MODE_LIRCCODE)
- return -EINVAL;
- break;
- default:
- return -EINVAL;
- }
- return result;
-}
-
-/*
- * Open the IR device.
- */
-static int open(struct inode *node, struct file *filep)
-{
- struct IR *ir;
-
- lirc_init_pdata(node, filep);
- ir = lirc_get_pdata(filep);
-
- atomic_inc(&ir->open_count);
-
- nonseekable_open(node, filep);
- return 0;
-}
-
-/* Close the IR device */
-static int close(struct inode *node, struct file *filep)
-{
- struct IR *ir = lirc_get_pdata(filep);
-
- atomic_dec(&ir->open_count);
-
- put_ir_device(ir, false);
- return 0;
-}
-
-static int ir_remove(struct i2c_client *client);
-static int ir_probe(struct i2c_client *client, const struct i2c_device_id *id);
-
-#define ID_FLAG_TX 0x01
-#define ID_FLAG_HDPVR 0x02
-
-static const struct i2c_device_id ir_transceiver_id[] = {
- { "ir_tx_z8f0811_haup", ID_FLAG_TX },
- { "ir_rx_z8f0811_haup", 0 },
- { "ir_tx_z8f0811_hdpvr", ID_FLAG_HDPVR | ID_FLAG_TX },
- { "ir_rx_z8f0811_hdpvr", ID_FLAG_HDPVR },
- { }
-};
-MODULE_DEVICE_TABLE(i2c, ir_transceiver_id);
-
-static struct i2c_driver driver = {
- .driver = {
- .name = "Zilog/Hauppauge i2c IR",
- },
- .probe = ir_probe,
- .remove = ir_remove,
- .id_table = ir_transceiver_id,
-};
-
-static const struct file_operations lirc_fops = {
- .owner = THIS_MODULE,
- .llseek = no_llseek,
- .read = read,
- .write = write,
- .poll = poll,
- .unlocked_ioctl = ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = ioctl,
-#endif
- .open = open,
- .release = close
-};
-
-static int ir_remove(struct i2c_client *client)
-{
- if (strncmp("ir_tx_z8", client->name, 8) == 0) {
- struct IR_tx *tx = i2c_get_clientdata(client);
-
- if (tx) {
- mutex_lock(&tx->client_lock);
- tx->c = NULL;
- mutex_unlock(&tx->client_lock);
- put_ir_tx(tx, false);
- }
- } else if (strncmp("ir_rx_z8", client->name, 8) == 0) {
- struct IR_rx *rx = i2c_get_clientdata(client);
-
- if (rx) {
- mutex_lock(&rx->client_lock);
- rx->c = NULL;
- mutex_unlock(&rx->client_lock);
- put_ir_rx(rx, false);
- }
- }
- return 0;
-}
-
-/* ir_devices_lock must be held */
-static struct IR *get_ir_device_by_adapter(struct i2c_adapter *adapter)
-{
- struct IR *ir;
-
- if (list_empty(&ir_devices_list))
- return NULL;
-
- list_for_each_entry(ir, &ir_devices_list, list)
- if (ir->adapter == adapter) {
- get_ir_device(ir, true);
- return ir;
- }
-
- return NULL;
-}
-
-static int ir_probe(struct i2c_client *client, const struct i2c_device_id *id)
-{
- struct IR *ir;
- struct IR_tx *tx;
- struct IR_rx *rx;
- struct i2c_adapter *adap = client->adapter;
- int ret;
- bool tx_probe = false;
-
- dev_dbg(&client->dev, "%s: %s on i2c-%d (%s), client addr=0x%02x\n",
- __func__, id->name, adap->nr, adap->name, client->addr);
-
- /*
- * The IR receiver is at i2c address 0x71.
- * The IR transmitter is at i2c address 0x70.
- */
-
- if (id->driver_data & ID_FLAG_TX)
- tx_probe = true;
- else if (tx_only) /* module option */
- return -ENXIO;
-
- pr_info("probing IR %s on %s (i2c-%d)\n",
- tx_probe ? "Tx" : "Rx", adap->name, adap->nr);
-
- mutex_lock(&ir_devices_lock);
-
- /* Use a single struct IR instance for both the Rx and Tx functions */
- ir = get_ir_device_by_adapter(adap);
- if (!ir) {
- ir = kzalloc(sizeof(*ir), GFP_KERNEL);
- if (!ir) {
- ret = -ENOMEM;
- goto out_no_ir;
- }
- kref_init(&ir->ref);
-
- /* store for use in ir_probe() again, and open() later on */
- INIT_LIST_HEAD(&ir->list);
- list_add_tail(&ir->list, &ir_devices_list);
-
- ir->adapter = adap;
- ir->dev = &adap->dev;
- mutex_init(&ir->ir_lock);
- atomic_set(&ir->open_count, 0);
- spin_lock_init(&ir->tx_ref_lock);
- spin_lock_init(&ir->rx_ref_lock);
-
- /* set lirc_dev stuff */
- ir->l = lirc_allocate_device();
- if (!ir->l) {
- ret = -ENOMEM;
- goto out_put_ir;
- }
-
- snprintf(ir->l->name, sizeof(ir->l->name), "lirc_zilog");
- ir->l->code_length = 13;
- ir->l->fops = &lirc_fops;
- ir->l->owner = THIS_MODULE;
- ir->l->dev.parent = &adap->dev;
-
- /*
- * FIXME this is a pointer reference to us, but no refcount.
- *
- * This OK for now, since lirc_dev currently won't touch this
- * buffer as we provide our own lirc_fops.
- *
- * Currently our own lirc_fops rely on this ir->l->buf pointer
- */
- ir->l->buf = &ir->rbuf;
- /* This will be returned by lirc_get_pdata() */
- ir->l->data = ir;
- ret = lirc_buffer_init(ir->l->buf, 2, BUFLEN / 2);
- if (ret) {
- lirc_free_device(ir->l);
- ir->l = NULL;
- goto out_put_ir;
- }
- }
-
- if (tx_probe) {
- /* Get the IR_rx instance for later, if already allocated */
- rx = get_ir_rx(ir);
-
- /* Set up a struct IR_tx instance */
- tx = kzalloc(sizeof(*tx), GFP_KERNEL);
- if (!tx) {
- ret = -ENOMEM;
- goto out_put_xx;
- }
- kref_init(&tx->ref);
- ir->tx = tx;
-
- ir->l->features |= LIRC_CAN_SEND_LIRCCODE;
- mutex_init(&tx->client_lock);
- tx->c = client;
- tx->need_boot = 1;
- tx->post_tx_ready_poll =
- (id->driver_data & ID_FLAG_HDPVR) ? false : true;
-
- /* An ir ref goes to the struct IR_tx instance */
- tx->ir = get_ir_device(ir, true);
-
- /* A tx ref goes to the i2c_client */
- i2c_set_clientdata(client, get_ir_tx(ir));
-
- /*
- * Load the 'firmware'. We do this before registering with
- * lirc_dev, so the first firmware load attempt does not happen
- * after a open() or write() call on the device.
- *
- * Failure here is not deemed catastrophic, so the receiver will
- * still be usable. Firmware load will be retried in write(),
- * if it is needed.
- */
- fw_load(tx);
-
- /* Proceed only if the Rx client is also ready or not needed */
- if (!rx && !tx_only) {
- dev_info(tx->ir->dev,
- "probe of IR Tx on %s (i2c-%d) done. Waiting on IR Rx.\n",
- adap->name, adap->nr);
- goto out_ok;
- }
- } else {
- /* Get the IR_tx instance for later, if already allocated */
- tx = get_ir_tx(ir);
-
- /* Set up a struct IR_rx instance */
- rx = kzalloc(sizeof(*rx), GFP_KERNEL);
- if (!rx) {
- ret = -ENOMEM;
- goto out_put_xx;
- }
- kref_init(&rx->ref);
- ir->rx = rx;
-
- ir->l->features |= LIRC_CAN_REC_LIRCCODE;
- mutex_init(&rx->client_lock);
- rx->c = client;
- rx->hdpvr_data_fmt =
- (id->driver_data & ID_FLAG_HDPVR) ? true : false;
-
- /* An ir ref goes to the struct IR_rx instance */
- rx->ir = get_ir_device(ir, true);
-
- /* An rx ref goes to the i2c_client */
- i2c_set_clientdata(client, get_ir_rx(ir));
-
- /*
- * Start the polling thread.
- * It will only perform an empty loop around schedule_timeout()
- * until we register with lirc_dev and the first user open()
- */
- /* An ir ref goes to the new rx polling kthread */
- rx->task = kthread_run(lirc_thread, get_ir_device(ir, true),
- "zilog-rx-i2c-%d", adap->nr);
- if (IS_ERR(rx->task)) {
- ret = PTR_ERR(rx->task);
- dev_err(tx->ir->dev,
- "%s: could not start IR Rx polling thread\n",
- __func__);
- /* Failed kthread, so put back the ir ref */
- put_ir_device(ir, true);
- /* Failure exit, so put back rx ref from i2c_client */
- i2c_set_clientdata(client, NULL);
- put_ir_rx(rx, true);
- ir->l->features &= ~LIRC_CAN_REC_LIRCCODE;
- goto out_put_tx;
- }
-
- /* Proceed only if the Tx client is also ready */
- if (!tx) {
- pr_info("probe of IR Rx on %s (i2c-%d) done. Waiting on IR Tx.\n",
- adap->name, adap->nr);
- goto out_ok;
- }
- }
-
- /* register with lirc */
- ret = lirc_register_device(ir->l);
- if (ret < 0) {
- dev_err(tx->ir->dev,
- "%s: lirc_register_device() failed: %i\n",
- __func__, ret);
- lirc_free_device(ir->l);
- ir->l = NULL;
- goto out_put_xx;
- }
-
- dev_info(ir->dev,
- "IR unit on %s (i2c-%d) registered as lirc%d and ready\n",
- adap->name, adap->nr, ir->l->minor);
-
-out_ok:
- if (rx)
- put_ir_rx(rx, true);
- if (tx)
- put_ir_tx(tx, true);
- put_ir_device(ir, true);
- dev_info(ir->dev,
- "probe of IR %s on %s (i2c-%d) done\n",
- tx_probe ? "Tx" : "Rx", adap->name, adap->nr);
- mutex_unlock(&ir_devices_lock);
- return 0;
-
-out_put_xx:
- if (rx)
- put_ir_rx(rx, true);
-out_put_tx:
- if (tx)
- put_ir_tx(tx, true);
-out_put_ir:
- put_ir_device(ir, true);
-out_no_ir:
- dev_err(&client->dev,
- "%s: probing IR %s on %s (i2c-%d) failed with %d\n",
- __func__, tx_probe ? "Tx" : "Rx", adap->name, adap->nr, ret);
- mutex_unlock(&ir_devices_lock);
- return ret;
-}
-
-static int __init zilog_init(void)
-{
- int ret;
-
- pr_notice("Zilog/Hauppauge IR driver initializing\n");
-
- mutex_init(&tx_data_lock);
-
- request_module("firmware_class");
-
- ret = i2c_add_driver(&driver);
- if (ret)
- pr_err("initialization failed\n");
- else
- pr_notice("initialization complete\n");
-
- return ret;
-}
-
-static void __exit zilog_exit(void)
-{
- i2c_del_driver(&driver);
- /* if loaded */
- fw_unload();
- pr_notice("Zilog/Hauppauge IR driver unloaded\n");
-}
-
-module_init(zilog_init);
-module_exit(zilog_exit);
-
-MODULE_DESCRIPTION("Zilog/Hauppauge infrared transmitter driver (i2c stack)");
-MODULE_AUTHOR("Gerd Knorr, Michal Kochanowicz, Christoph Bartelmus, Ulrich Mueller, Stefan Jahn, Jerome Brock, Mark Weaver, Andy Walls");
-MODULE_LICENSE("GPL");
-/* for compat with old name, which isn't all that accurate anymore */
-MODULE_ALIAS("lirc_pvr150");
-
-module_param(debug, bool, 0644);
-MODULE_PARM_DESC(debug, "Enable debugging messages");
-
-module_param(tx_only, bool, 0644);
-MODULE_PARM_DESC(tx_only, "Only handle the IR transmit function");
projects / linux.git / commitdiff