| // SPDX-License-Identifier: GPL-2.0-or-later |
| /* |
| * |
| * keyboard input driver for i2c IR remote controls |
| * |
| * Copyright (c) 2000-2003 Gerd Knorr <kraxel@bytesex.org> |
| * 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 em2820 based USB TV tuners by |
| * Markus Rechberger <mrechberger@gmail.com> |
| * modified for DViCO Fusion HDTV 5 RT GOLD by |
| * Chaogui Zhang <czhang1974@gmail.com> |
| * modified for MSI TV@nywhere Plus by |
| * Henry Wong <henry@stuffedcow.net> |
| * Mark Schultz <n9xmj@yahoo.com> |
| * Brian Rogers <brian_rogers@comcast.net> |
| * modified for AVerMedia Cardbus by |
| * Oldrich Jedlicka <oldium.pro@seznam.cz> |
| * Zilog Transmitter portions/ideas were derived from GPLv2+ sources: |
| * - drivers/char/pctv_zilogir.[ch] from Hauppauge Broadway product |
| * Copyright 2011 Hauppauge Computer works |
| * - drivers/staging/media/lirc/lirc_zilog.c |
| * Copyright (c) 2000 Gerd Knorr <kraxel@goldbach.in-berlin.de> |
| * Michal Kochanowicz <mkochano@pld.org.pl> |
| * Christoph Bartelmus <lirc@bartelmus.de> |
| * Ulrich Mueller <ulrich.mueller42@web.de> |
| * Stefan Jahn <stefan@lkcc.org> |
| * Jerome Brock <jbrock@users.sourceforge.net> |
| * Thomas Reitmayr (treitmayr@yahoo.com) |
| * Mark Weaver <mark@npsl.co.uk> |
| * Jarod Wilson <jarod@redhat.com> |
| * Copyright (C) 2011 Andy Walls <awalls@md.metrocast.net> |
| */ |
| |
| #include <asm/unaligned.h> |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/kernel.h> |
| #include <linux/string.h> |
| #include <linux/timer.h> |
| #include <linux/delay.h> |
| #include <linux/errno.h> |
| #include <linux/slab.h> |
| #include <linux/i2c.h> |
| #include <linux/workqueue.h> |
| |
| #include <media/rc-core.h> |
| #include <media/i2c/ir-kbd-i2c.h> |
| |
| #define FLAG_TX 1 |
| #define FLAG_HDPVR 2 |
| |
| static bool enable_hdpvr; |
| module_param(enable_hdpvr, bool, 0644); |
| |
| static int get_key_haup_common(struct IR_i2c *ir, enum rc_proto *protocol, |
| u32 *scancode, u8 *ptoggle, int size) |
| { |
| unsigned char buf[6]; |
| int start, range, toggle, dev, code, ircode, vendor; |
| |
| /* poll IR chip */ |
| if (size != i2c_master_recv(ir->c, buf, size)) |
| return -EIO; |
| |
| if (buf[0] & 0x80) { |
| int offset = (size == 6) ? 3 : 0; |
| |
| /* split rc5 data block ... */ |
| start = (buf[offset] >> 7) & 1; |
| range = (buf[offset] >> 6) & 1; |
| toggle = (buf[offset] >> 5) & 1; |
| dev = buf[offset] & 0x1f; |
| code = (buf[offset+1] >> 2) & 0x3f; |
| |
| /* rc5 has two start bits |
| * the first bit must be one |
| * the second bit defines the command range: |
| * 1 = 0-63, 0 = 64 - 127 |
| */ |
| if (!start) |
| /* no key pressed */ |
| return 0; |
| |
| /* filter out invalid key presses */ |
| ircode = (start << 12) | (toggle << 11) | (dev << 6) | code; |
| if ((ircode & 0x1fff) == 0x1fff) |
| return 0; |
| |
| if (!range) |
| code += 64; |
| |
| dev_dbg(&ir->rc->dev, |
| "ir hauppauge (rc5): s%d r%d t%d dev=%d code=%d\n", |
| start, range, toggle, dev, code); |
| |
| *protocol = RC_PROTO_RC5; |
| *scancode = RC_SCANCODE_RC5(dev, code); |
| *ptoggle = toggle; |
| |
| return 1; |
| } else if (size == 6 && (buf[0] & 0x40)) { |
| code = buf[4]; |
| dev = buf[3]; |
| vendor = get_unaligned_be16(buf + 1); |
| |
| if (vendor == 0x800f) { |
| *ptoggle = (dev & 0x80) != 0; |
| *protocol = RC_PROTO_RC6_MCE; |
| dev &= 0x7f; |
| dev_dbg(&ir->rc->dev, |
| "ir hauppauge (rc6-mce): t%d vendor=%d dev=%d code=%d\n", |
| *ptoggle, vendor, dev, code); |
| } else { |
| *ptoggle = 0; |
| *protocol = RC_PROTO_RC6_6A_32; |
| dev_dbg(&ir->rc->dev, |
| "ir hauppauge (rc6-6a-32): vendor=%d dev=%d code=%d\n", |
| vendor, dev, code); |
| } |
| |
| *scancode = RC_SCANCODE_RC6_6A(vendor, dev, code); |
| |
| return 1; |
| } |
| |
| return 0; |
| } |
| |
| static int get_key_haup(struct IR_i2c *ir, enum rc_proto *protocol, |
| u32 *scancode, u8 *toggle) |
| { |
| return get_key_haup_common(ir, protocol, scancode, toggle, 3); |
| } |
| |
| static int get_key_haup_xvr(struct IR_i2c *ir, enum rc_proto *protocol, |
| u32 *scancode, u8 *toggle) |
| { |
| int ret; |
| unsigned char buf[1] = { 0 }; |
| |
| /* |
| * This is the same apparent "are you ready?" poll command observed |
| * watching Windows driver traffic and implemented in lirc_zilog. With |
| * this added, we get far saner remote behavior with z8 chips on usb |
| * connected devices, even with the default polling interval of 100ms. |
| */ |
| ret = i2c_master_send(ir->c, buf, 1); |
| if (ret != 1) |
| return (ret < 0) ? ret : -EINVAL; |
| |
| return get_key_haup_common(ir, protocol, scancode, toggle, 6); |
| } |
| |
| static int get_key_pixelview(struct IR_i2c *ir, enum rc_proto *protocol, |
| u32 *scancode, u8 *toggle) |
| { |
| int rc; |
| unsigned char b; |
| |
| /* poll IR chip */ |
| rc = i2c_master_recv(ir->c, &b, 1); |
| if (rc != 1) { |
| dev_dbg(&ir->rc->dev, "read error\n"); |
| if (rc < 0) |
| return rc; |
| return -EIO; |
| } |
| |
| *protocol = RC_PROTO_OTHER; |
| *scancode = b; |
| *toggle = 0; |
| return 1; |
| } |
| |
| static int get_key_fusionhdtv(struct IR_i2c *ir, enum rc_proto *protocol, |
| u32 *scancode, u8 *toggle) |
| { |
| int rc; |
| unsigned char buf[4]; |
| |
| /* poll IR chip */ |
| rc = i2c_master_recv(ir->c, buf, 4); |
| if (rc != 4) { |
| dev_dbg(&ir->rc->dev, "read error\n"); |
| if (rc < 0) |
| return rc; |
| return -EIO; |
| } |
| |
| if (buf[0] != 0 || buf[1] != 0 || buf[2] != 0 || buf[3] != 0) |
| dev_dbg(&ir->rc->dev, "%s: %*ph\n", __func__, 4, buf); |
| |
| /* no key pressed or signal from other ir remote */ |
| if(buf[0] != 0x1 || buf[1] != 0xfe) |
| return 0; |
| |
| *protocol = RC_PROTO_UNKNOWN; |
| *scancode = buf[2]; |
| *toggle = 0; |
| return 1; |
| } |
| |
| static int get_key_knc1(struct IR_i2c *ir, enum rc_proto *protocol, |
| u32 *scancode, u8 *toggle) |
| { |
| int rc; |
| unsigned char b; |
| |
| /* poll IR chip */ |
| rc = i2c_master_recv(ir->c, &b, 1); |
| if (rc != 1) { |
| dev_dbg(&ir->rc->dev, "read error\n"); |
| if (rc < 0) |
| return rc; |
| return -EIO; |
| } |
| |
| /* it seems that 0xFE indicates that a button is still hold |
| down, while 0xff indicates that no button is hold |
| down. 0xfe sequences are sometimes interrupted by 0xFF */ |
| |
| dev_dbg(&ir->rc->dev, "key %02x\n", b); |
| |
| if (b == 0xff) |
| return 0; |
| |
| if (b == 0xfe) |
| /* keep old data */ |
| return 1; |
| |
| *protocol = RC_PROTO_UNKNOWN; |
| *scancode = b; |
| *toggle = 0; |
| return 1; |
| } |
| |
| static int get_key_geniatech(struct IR_i2c *ir, enum rc_proto *protocol, |
| u32 *scancode, u8 *toggle) |
| { |
| int i, rc; |
| unsigned char b; |
| |
| /* poll IR chip */ |
| for (i = 0; i < 4; i++) { |
| rc = i2c_master_recv(ir->c, &b, 1); |
| if (rc == 1) |
| break; |
| msleep(20); |
| } |
| if (rc != 1) { |
| dev_dbg(&ir->rc->dev, "read error\n"); |
| if (rc < 0) |
| return rc; |
| return -EIO; |
| } |
| |
| /* don't repeat the key */ |
| if (ir->old == b) |
| return 0; |
| ir->old = b; |
| |
| /* decode to RC5 */ |
| b &= 0x7f; |
| b = (b - 1) / 2; |
| |
| dev_dbg(&ir->rc->dev, "key %02x\n", b); |
| |
| *protocol = RC_PROTO_RC5; |
| *scancode = b; |
| *toggle = ir->old >> 7; |
| return 1; |
| } |
| |
| static int get_key_avermedia_cardbus(struct IR_i2c *ir, enum rc_proto *protocol, |
| u32 *scancode, u8 *toggle) |
| { |
| unsigned char subaddr, key, keygroup; |
| struct i2c_msg msg[] = { { .addr = ir->c->addr, .flags = 0, |
| .buf = &subaddr, .len = 1}, |
| { .addr = ir->c->addr, .flags = I2C_M_RD, |
| .buf = &key, .len = 1} }; |
| subaddr = 0x0d; |
| if (2 != i2c_transfer(ir->c->adapter, msg, 2)) { |
| dev_dbg(&ir->rc->dev, "read error\n"); |
| return -EIO; |
| } |
| |
| if (key == 0xff) |
| return 0; |
| |
| subaddr = 0x0b; |
| msg[1].buf = &keygroup; |
| if (2 != i2c_transfer(ir->c->adapter, msg, 2)) { |
| dev_dbg(&ir->rc->dev, "read error\n"); |
| return -EIO; |
| } |
| |
| if (keygroup == 0xff) |
| return 0; |
| |
| dev_dbg(&ir->rc->dev, "read key 0x%02x/0x%02x\n", key, keygroup); |
| if (keygroup < 2 || keygroup > 4) { |
| dev_warn(&ir->rc->dev, "warning: invalid key group 0x%02x for key 0x%02x\n", |
| keygroup, key); |
| } |
| key |= (keygroup & 1) << 6; |
| |
| *protocol = RC_PROTO_UNKNOWN; |
| *scancode = key; |
| if (ir->c->addr == 0x41) /* AVerMedia EM78P153 */ |
| *scancode |= keygroup << 8; |
| *toggle = 0; |
| return 1; |
| } |
| |
| /* ----------------------------------------------------------------------- */ |
| |
| static int ir_key_poll(struct IR_i2c *ir) |
| { |
| enum rc_proto protocol; |
| u32 scancode; |
| u8 toggle; |
| int rc; |
| |
| dev_dbg(&ir->rc->dev, "%s\n", __func__); |
| rc = ir->get_key(ir, &protocol, &scancode, &toggle); |
| if (rc < 0) { |
| dev_warn(&ir->rc->dev, "error %d\n", rc); |
| return rc; |
| } |
| |
| if (rc) { |
| dev_dbg(&ir->rc->dev, "%s: proto = 0x%04x, scancode = 0x%08x\n", |
| __func__, protocol, scancode); |
| rc_keydown(ir->rc, protocol, scancode, toggle); |
| } |
| return 0; |
| } |
| |
| static void ir_work(struct work_struct *work) |
| { |
| int rc; |
| struct IR_i2c *ir = container_of(work, struct IR_i2c, work.work); |
| |
| /* |
| * If the transmit code is holding the lock, skip polling for |
| * IR, we'll get it to it next time round |
| */ |
| if (mutex_trylock(&ir->lock)) { |
| rc = ir_key_poll(ir); |
| mutex_unlock(&ir->lock); |
| if (rc == -ENODEV) { |
| rc_unregister_device(ir->rc); |
| ir->rc = NULL; |
| return; |
| } |
| } |
| |
| schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling_interval)); |
| } |
| |
| static int ir_open(struct rc_dev *dev) |
| { |
| struct IR_i2c *ir = dev->priv; |
| |
| schedule_delayed_work(&ir->work, 0); |
| |
| return 0; |
| } |
| |
| static void ir_close(struct rc_dev *dev) |
| { |
| struct IR_i2c *ir = dev->priv; |
| |
| cancel_delayed_work_sync(&ir->work); |
| } |
| |
| /* Zilog Transmit Interface */ |
| #define XTAL_FREQ 18432000 |
| |
| #define ZILOG_SEND 0x80 |
| #define ZILOG_UIR_END 0x40 |
| #define ZILOG_INIT_END 0x20 |
| #define ZILOG_LIR_END 0x10 |
| |
| #define ZILOG_STATUS_OK 0x80 |
| #define ZILOG_STATUS_TX 0x40 |
| #define ZILOG_STATUS_SET 0x20 |
| |
| /* |
| * As you can see here, very few different lengths of pulse and space |
| * can be encoded. This means that the hardware does not work well with |
| * recorded IR. It's best to work with generated IR, like from ir-ctl or |
| * the in-kernel encoders. |
| */ |
| struct code_block { |
| u8 length; |
| u16 pulse[7]; /* not aligned */ |
| u8 carrier_pulse; |
| u8 carrier_space; |
| u16 space[8]; /* not aligned */ |
| u8 codes[61]; |
| u8 csum[2]; |
| } __packed; |
| |
| static int send_data_block(struct IR_i2c *ir, int cmd, |
| struct code_block *code_block) |
| { |
| int i, j, ret; |
| u8 buf[5], *p; |
| |
| p = &code_block->length; |
| for (i = 0; p < code_block->csum; i++) |
| code_block->csum[i & 1] ^= *p++; |
| |
| p = &code_block->length; |
| |
| for (i = 0; i < sizeof(*code_block);) { |
| int tosend = sizeof(*code_block) - i; |
| |
| if (tosend > 4) |
| tosend = 4; |
| buf[0] = i + 1; |
| for (j = 0; j < tosend; ++j) |
| buf[1 + j] = p[i + j]; |
| dev_dbg(&ir->rc->dev, "%*ph", tosend + 1, buf); |
| ret = i2c_master_send(ir->tx_c, buf, tosend + 1); |
| if (ret != tosend + 1) { |
| dev_dbg(&ir->rc->dev, |
| "i2c_master_send failed with %d\n", ret); |
| return ret < 0 ? ret : -EIO; |
| } |
| i += tosend; |
| } |
| |
| buf[0] = 0; |
| buf[1] = cmd; |
| ret = i2c_master_send(ir->tx_c, buf, 2); |
| if (ret != 2) { |
| dev_err(&ir->rc->dev, "i2c_master_send failed with %d\n", ret); |
| return ret < 0 ? ret : -EIO; |
| } |
| |
| usleep_range(2000, 5000); |
| |
| ret = i2c_master_send(ir->tx_c, buf, 1); |
| if (ret != 1) { |
| dev_err(&ir->rc->dev, "i2c_master_send failed with %d\n", ret); |
| return ret < 0 ? ret : -EIO; |
| } |
| |
| return 0; |
| } |
| |
| static int zilog_init(struct IR_i2c *ir) |
| { |
| struct code_block code_block = { .length = sizeof(code_block) }; |
| u8 buf[4]; |
| int ret; |
| |
| put_unaligned_be16(0x1000, &code_block.pulse[3]); |
| |
| ret = send_data_block(ir, ZILOG_INIT_END, &code_block); |
| if (ret) |
| return ret; |
| |
| ret = i2c_master_recv(ir->tx_c, buf, 4); |
| if (ret != 4) { |
| dev_err(&ir->c->dev, "failed to retrieve firmware version: %d\n", |
| ret); |
| return ret < 0 ? ret : -EIO; |
| } |
| |
| dev_info(&ir->c->dev, "Zilog/Hauppauge IR blaster firmware version %d.%d.%d\n", |
| buf[1], buf[2], buf[3]); |
| |
| return 0; |
| } |
| |
| /* |
| * If the last slot for pulse is the same as the current slot for pulse, |
| * then use slot no 7. |
| */ |
| static void copy_codes(u8 *dst, u8 *src, unsigned int count) |
| { |
| u8 c, last = 0xff; |
| |
| while (count--) { |
| c = *src++; |
| if ((c & 0xf0) == last) { |
| *dst++ = 0x70 | (c & 0xf); |
| } else { |
| *dst++ = c; |
| last = c & 0xf0; |
| } |
| } |
| } |
| |
| /* |
| * When looking for repeats, we don't care about the trailing space. This |
| * is set to the shortest possible anyway. |
| */ |
| static int cmp_no_trail(u8 *a, u8 *b, unsigned int count) |
| { |
| while (--count) { |
| if (*a++ != *b++) |
| return 1; |
| } |
| |
| return (*a & 0xf0) - (*b & 0xf0); |
| } |
| |
| static int find_slot(u16 *array, unsigned int size, u16 val) |
| { |
| int i; |
| |
| for (i = 0; i < size; i++) { |
| if (get_unaligned_be16(&array[i]) == val) { |
| return i; |
| } else if (!array[i]) { |
| put_unaligned_be16(val, &array[i]); |
| return i; |
| } |
| } |
| |
| return -1; |
| } |
| |
| static int zilog_ir_format(struct rc_dev *rcdev, unsigned int *txbuf, |
| unsigned int count, struct code_block *code_block) |
| { |
| struct IR_i2c *ir = rcdev->priv; |
| int rep, i, l, p = 0, s, c = 0; |
| bool repeating; |
| u8 codes[174]; |
| |
| code_block->carrier_pulse = DIV_ROUND_CLOSEST( |
| ir->duty_cycle * XTAL_FREQ / 1000, ir->carrier); |
| code_block->carrier_space = DIV_ROUND_CLOSEST( |
| (100 - ir->duty_cycle) * XTAL_FREQ / 1000, ir->carrier); |
| |
| for (i = 0; i < count; i++) { |
| if (c >= ARRAY_SIZE(codes) - 1) { |
| dev_warn(&rcdev->dev, "IR too long, cannot transmit\n"); |
| return -EINVAL; |
| } |
| |
| /* |
| * Lengths more than 142220us cannot be encoded; also |
| * this checks for multiply overflow |
| */ |
| if (txbuf[i] > 142220) |
| return -EINVAL; |
| |
| l = DIV_ROUND_CLOSEST((XTAL_FREQ / 1000) * txbuf[i], 40000); |
| |
| if (i & 1) { |
| s = find_slot(code_block->space, |
| ARRAY_SIZE(code_block->space), l); |
| if (s == -1) { |
| dev_warn(&rcdev->dev, "Too many different lengths spaces, cannot transmit"); |
| return -EINVAL; |
| } |
| |
| /* We have a pulse and space */ |
| codes[c++] = (p << 4) | s; |
| } else { |
| p = find_slot(code_block->pulse, |
| ARRAY_SIZE(code_block->pulse), l); |
| if (p == -1) { |
| dev_warn(&rcdev->dev, "Too many different lengths pulses, cannot transmit"); |
| return -EINVAL; |
| } |
| } |
| } |
| |
| /* We have to encode the trailing pulse. Find the shortest space */ |
| s = 0; |
| for (i = 1; i < ARRAY_SIZE(code_block->space); i++) { |
| u16 d = get_unaligned_be16(&code_block->space[i]); |
| |
| if (get_unaligned_be16(&code_block->space[s]) > d) |
| s = i; |
| } |
| |
| codes[c++] = (p << 4) | s; |
| |
| dev_dbg(&rcdev->dev, "generated %d codes\n", c); |
| |
| /* |
| * Are the last N codes (so pulse + space) repeating 3 times? |
| * if so we can shorten the codes list and use code 0xc0 to repeat |
| * them. |
| */ |
| repeating = false; |
| |
| for (rep = c / 3; rep >= 1; rep--) { |
| if (!memcmp(&codes[c - rep * 3], &codes[c - rep * 2], rep) && |
| !cmp_no_trail(&codes[c - rep], &codes[c - rep * 2], rep)) { |
| repeating = true; |
| break; |
| } |
| } |
| |
| if (repeating) { |
| /* first copy any leading non-repeating */ |
| int leading = c - rep * 3; |
| |
| if (leading >= ARRAY_SIZE(code_block->codes) - 3 - rep) { |
| dev_warn(&rcdev->dev, "IR too long, cannot transmit\n"); |
| return -EINVAL; |
| } |
| |
| dev_dbg(&rcdev->dev, "found trailing %d repeat\n", rep); |
| copy_codes(code_block->codes, codes, leading); |
| code_block->codes[leading] = 0x82; |
| copy_codes(code_block->codes + leading + 1, codes + leading, |
| rep); |
| c = leading + 1 + rep; |
| code_block->codes[c++] = 0xc0; |
| } else { |
| if (c >= ARRAY_SIZE(code_block->codes) - 3) { |
| dev_warn(&rcdev->dev, "IR too long, cannot transmit\n"); |
| return -EINVAL; |
| } |
| |
| dev_dbg(&rcdev->dev, "found no trailing repeat\n"); |
| code_block->codes[0] = 0x82; |
| copy_codes(code_block->codes + 1, codes, c); |
| c++; |
| code_block->codes[c++] = 0xc4; |
| } |
| |
| while (c < ARRAY_SIZE(code_block->codes)) |
| code_block->codes[c++] = 0x83; |
| |
| return 0; |
| } |
| |
| static int zilog_tx(struct rc_dev *rcdev, unsigned int *txbuf, |
| unsigned int count) |
| { |
| struct IR_i2c *ir = rcdev->priv; |
| struct code_block code_block = { .length = sizeof(code_block) }; |
| u8 buf[2]; |
| int ret, i; |
| |
| ret = zilog_ir_format(rcdev, txbuf, count, &code_block); |
| if (ret) |
| return ret; |
| |
| ret = mutex_lock_interruptible(&ir->lock); |
| if (ret) |
| return ret; |
| |
| ret = send_data_block(ir, ZILOG_UIR_END, &code_block); |
| if (ret) |
| goto out_unlock; |
| |
| ret = i2c_master_recv(ir->tx_c, buf, 1); |
| if (ret != 1) { |
| dev_err(&ir->rc->dev, "i2c_master_recv failed with %d\n", ret); |
| goto out_unlock; |
| } |
| |
| dev_dbg(&ir->rc->dev, "code set status: %02x\n", buf[0]); |
| |
| if (buf[0] != (ZILOG_STATUS_OK | ZILOG_STATUS_SET)) { |
| dev_err(&ir->rc->dev, "unexpected IR TX response %02x\n", |
| buf[0]); |
| ret = -EIO; |
| goto out_unlock; |
| } |
| |
| buf[0] = 0x00; |
| buf[1] = ZILOG_SEND; |
| |
| ret = i2c_master_send(ir->tx_c, buf, 2); |
| if (ret != 2) { |
| dev_err(&ir->rc->dev, "i2c_master_send failed with %d\n", ret); |
| if (ret >= 0) |
| ret = -EIO; |
| goto out_unlock; |
| } |
| |
| dev_dbg(&ir->rc->dev, "send command sent\n"); |
| |
| /* |
| * 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(msecs_to_jiffies(50)); |
| ret = i2c_master_send(ir->tx_c, buf, 1); |
| if (ret == 1) |
| break; |
| dev_dbg(&ir->rc->dev, |
| "NAK expected: i2c_master_send failed with %d (try %d)\n", |
| ret, i + 1); |
| } |
| |
| if (ret != 1) { |
| dev_err(&ir->rc->dev, |
| "IR TX chip never got ready: last i2c_master_send failed with %d\n", |
| ret); |
| if (ret >= 0) |
| ret = -EIO; |
| goto out_unlock; |
| } |
| |
| ret = i2c_master_recv(ir->tx_c, buf, 1); |
| if (ret != 1) { |
| dev_err(&ir->rc->dev, "i2c_master_recv failed with %d\n", ret); |
| ret = -EIO; |
| goto out_unlock; |
| } else if (buf[0] != ZILOG_STATUS_OK) { |
| dev_err(&ir->rc->dev, "unexpected IR TX response #2: %02x\n", |
| buf[0]); |
| ret = -EIO; |
| goto out_unlock; |
| } |
| dev_dbg(&ir->rc->dev, "transmit complete\n"); |
| |
| /* Oh good, it worked */ |
| ret = count; |
| out_unlock: |
| mutex_unlock(&ir->lock); |
| |
| return ret; |
| } |
| |
| static int zilog_tx_carrier(struct rc_dev *dev, u32 carrier) |
| { |
| struct IR_i2c *ir = dev->priv; |
| |
| if (carrier > 500000 || carrier < 20000) |
| return -EINVAL; |
| |
| ir->carrier = carrier; |
| |
| return 0; |
| } |
| |
| static int zilog_tx_duty_cycle(struct rc_dev *dev, u32 duty_cycle) |
| { |
| struct IR_i2c *ir = dev->priv; |
| |
| ir->duty_cycle = duty_cycle; |
| |
| return 0; |
| } |
| |
| static int ir_probe(struct i2c_client *client) |
| { |
| const struct i2c_device_id *id = i2c_client_get_device_id(client); |
| char *ir_codes = NULL; |
| const char *name = NULL; |
| u64 rc_proto = RC_PROTO_BIT_UNKNOWN; |
| struct IR_i2c *ir; |
| struct rc_dev *rc = NULL; |
| struct i2c_adapter *adap = client->adapter; |
| unsigned short addr = client->addr; |
| bool probe_tx = (id->driver_data & FLAG_TX) != 0; |
| int err; |
| |
| if ((id->driver_data & FLAG_HDPVR) && !enable_hdpvr) { |
| dev_err(&client->dev, "IR for HDPVR is known to cause problems during recording, use enable_hdpvr modparam to enable\n"); |
| return -ENODEV; |
| } |
| |
| ir = devm_kzalloc(&client->dev, sizeof(*ir), GFP_KERNEL); |
| if (!ir) |
| return -ENOMEM; |
| |
| ir->c = client; |
| ir->polling_interval = DEFAULT_POLLING_INTERVAL; |
| i2c_set_clientdata(client, ir); |
| |
| switch(addr) { |
| case 0x64: |
| name = "Pixelview"; |
| ir->get_key = get_key_pixelview; |
| rc_proto = RC_PROTO_BIT_OTHER; |
| ir_codes = RC_MAP_EMPTY; |
| break; |
| case 0x18: |
| case 0x1f: |
| case 0x1a: |
| name = "Hauppauge"; |
| ir->get_key = get_key_haup; |
| rc_proto = RC_PROTO_BIT_RC5; |
| ir_codes = RC_MAP_HAUPPAUGE; |
| break; |
| case 0x30: |
| name = "KNC One"; |
| ir->get_key = get_key_knc1; |
| rc_proto = RC_PROTO_BIT_OTHER; |
| ir_codes = RC_MAP_EMPTY; |
| break; |
| case 0x33: |
| name = "Geniatech"; |
| ir->get_key = get_key_geniatech; |
| rc_proto = RC_PROTO_BIT_RC5; |
| ir_codes = RC_MAP_TOTAL_MEDIA_IN_HAND_02; |
| ir->old = 0xfc; |
| break; |
| case 0x6b: |
| name = "FusionHDTV"; |
| ir->get_key = get_key_fusionhdtv; |
| rc_proto = RC_PROTO_BIT_UNKNOWN; |
| ir_codes = RC_MAP_FUSIONHDTV_MCE; |
| break; |
| case 0x40: |
| name = "AVerMedia Cardbus remote"; |
| ir->get_key = get_key_avermedia_cardbus; |
| rc_proto = RC_PROTO_BIT_OTHER; |
| ir_codes = RC_MAP_AVERMEDIA_CARDBUS; |
| break; |
| case 0x41: |
| name = "AVerMedia EM78P153"; |
| ir->get_key = get_key_avermedia_cardbus; |
| rc_proto = RC_PROTO_BIT_OTHER; |
| /* RM-KV remote, seems to be same as RM-K6 */ |
| ir_codes = RC_MAP_AVERMEDIA_M733A_RM_K6; |
| break; |
| case 0x71: |
| name = "Hauppauge/Zilog Z8"; |
| ir->get_key = get_key_haup_xvr; |
| rc_proto = RC_PROTO_BIT_RC5 | RC_PROTO_BIT_RC6_MCE | |
| RC_PROTO_BIT_RC6_6A_32; |
| ir_codes = RC_MAP_HAUPPAUGE; |
| ir->polling_interval = 125; |
| probe_tx = true; |
| break; |
| } |
| |
| /* Let the caller override settings */ |
| if (client->dev.platform_data) { |
| const struct IR_i2c_init_data *init_data = |
| client->dev.platform_data; |
| |
| ir_codes = init_data->ir_codes; |
| rc = init_data->rc_dev; |
| |
| name = init_data->name; |
| if (init_data->type) |
| rc_proto = init_data->type; |
| |
| if (init_data->polling_interval) |
| ir->polling_interval = init_data->polling_interval; |
| |
| switch (init_data->internal_get_key_func) { |
| case IR_KBD_GET_KEY_CUSTOM: |
| /* The bridge driver provided us its own function */ |
| ir->get_key = init_data->get_key; |
| break; |
| case IR_KBD_GET_KEY_PIXELVIEW: |
| ir->get_key = get_key_pixelview; |
| break; |
| case IR_KBD_GET_KEY_HAUP: |
| ir->get_key = get_key_haup; |
| break; |
| case IR_KBD_GET_KEY_KNC1: |
| ir->get_key = get_key_knc1; |
| break; |
| case IR_KBD_GET_KEY_GENIATECH: |
| ir->get_key = get_key_geniatech; |
| break; |
| case IR_KBD_GET_KEY_FUSIONHDTV: |
| ir->get_key = get_key_fusionhdtv; |
| break; |
| case IR_KBD_GET_KEY_HAUP_XVR: |
| ir->get_key = get_key_haup_xvr; |
| break; |
| case IR_KBD_GET_KEY_AVERMEDIA_CARDBUS: |
| ir->get_key = get_key_avermedia_cardbus; |
| break; |
| } |
| } |
| |
| if (!rc) { |
| /* |
| * If platform_data doesn't specify rc_dev, initialize it |
| * internally |
| */ |
| rc = rc_allocate_device(RC_DRIVER_SCANCODE); |
| if (!rc) |
| return -ENOMEM; |
| } |
| ir->rc = rc; |
| |
| /* Make sure we are all setup before going on */ |
| if (!name || !ir->get_key || !rc_proto || !ir_codes) { |
| dev_warn(&client->dev, "Unsupported device at address 0x%02x\n", |
| addr); |
| err = -ENODEV; |
| goto err_out_free; |
| } |
| |
| ir->ir_codes = ir_codes; |
| |
| snprintf(ir->phys, sizeof(ir->phys), "%s/%s", dev_name(&adap->dev), |
| dev_name(&client->dev)); |
| |
| /* |
| * Initialize input_dev fields |
| * It doesn't make sense to allow overriding them via platform_data |
| */ |
| rc->input_id.bustype = BUS_I2C; |
| rc->input_phys = ir->phys; |
| rc->device_name = name; |
| rc->dev.parent = &client->dev; |
| rc->priv = ir; |
| rc->open = ir_open; |
| rc->close = ir_close; |
| |
| /* |
| * Initialize the other fields of rc_dev |
| */ |
| rc->map_name = ir->ir_codes; |
| rc->allowed_protocols = rc_proto; |
| if (!rc->driver_name) |
| rc->driver_name = KBUILD_MODNAME; |
| |
| mutex_init(&ir->lock); |
| |
| INIT_DELAYED_WORK(&ir->work, ir_work); |
| |
| if (probe_tx) { |
| ir->tx_c = i2c_new_dummy_device(client->adapter, 0x70); |
| if (IS_ERR(ir->tx_c)) { |
| dev_err(&client->dev, "failed to setup tx i2c address"); |
| err = PTR_ERR(ir->tx_c); |
| goto err_out_free; |
| } else if (!zilog_init(ir)) { |
| ir->carrier = 38000; |
| ir->duty_cycle = 40; |
| rc->tx_ir = zilog_tx; |
| rc->s_tx_carrier = zilog_tx_carrier; |
| rc->s_tx_duty_cycle = zilog_tx_duty_cycle; |
| } |
| } |
| |
| err = rc_register_device(rc); |
| if (err) |
| goto err_out_free; |
| |
| return 0; |
| |
| err_out_free: |
| if (!IS_ERR(ir->tx_c)) |
| i2c_unregister_device(ir->tx_c); |
| |
| /* Only frees rc if it were allocated internally */ |
| rc_free_device(rc); |
| return err; |
| } |
| |
| static void ir_remove(struct i2c_client *client) |
| { |
| struct IR_i2c *ir = i2c_get_clientdata(client); |
| |
| cancel_delayed_work_sync(&ir->work); |
| |
| i2c_unregister_device(ir->tx_c); |
| |
| rc_unregister_device(ir->rc); |
| } |
| |
| static const struct i2c_device_id ir_kbd_id[] = { |
| /* Generic entry for any IR receiver */ |
| { "ir_video", 0 }, |
| /* IR device specific entries should be added here */ |
| { "ir_z8f0811_haup", FLAG_TX }, |
| { "ir_z8f0811_hdpvr", FLAG_TX | FLAG_HDPVR }, |
| { } |
| }; |
| MODULE_DEVICE_TABLE(i2c, ir_kbd_id); |
| |
| static struct i2c_driver ir_kbd_driver = { |
| .driver = { |
| .name = "ir-kbd-i2c", |
| }, |
| .probe_new = ir_probe, |
| .remove = ir_remove, |
| .id_table = ir_kbd_id, |
| }; |
| |
| module_i2c_driver(ir_kbd_driver); |
| |
| /* ----------------------------------------------------------------------- */ |
| |
| MODULE_AUTHOR("Gerd Knorr, Michal Kochanowicz, Christoph Bartelmus, Ulrich Mueller"); |
| MODULE_DESCRIPTION("input driver for i2c IR remote controls"); |
| MODULE_LICENSE("GPL"); |