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955 lines
22 KiB
955 lines
22 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* |
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* keyboard input driver for i2c IR remote controls |
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* |
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* Copyright (c) 2000-2003 Gerd Knorr <[email protected]> |
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* modified for PixelView (BT878P+W/FM) by |
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* Michal Kochanowicz <[email protected]> |
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* Christoph Bartelmus <[email protected]> |
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* modified for KNC ONE TV Station/Anubis Typhoon TView Tuner by |
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* Ulrich Mueller <[email protected]> |
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* modified for em2820 based USB TV tuners by |
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* Markus Rechberger <[email protected]> |
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* modified for DViCO Fusion HDTV 5 RT GOLD by |
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* Chaogui Zhang <[email protected]> |
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* modified for MSI TV@nywhere Plus by |
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* Henry Wong <[email protected]> |
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* Mark Schultz <[email protected]> |
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* Brian Rogers <[email protected]> |
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* modified for AVerMedia Cardbus by |
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* Oldrich Jedlicka <[email protected]> |
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* Zilog Transmitter portions/ideas were derived from GPLv2+ sources: |
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* - drivers/char/pctv_zilogir.[ch] from Hauppauge Broadway product |
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* Copyright 2011 Hauppauge Computer works |
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* - drivers/staging/media/lirc/lirc_zilog.c |
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* Copyright (c) 2000 Gerd Knorr <[email protected]> |
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* Michal Kochanowicz <[email protected]> |
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* Christoph Bartelmus <[email protected]> |
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* Ulrich Mueller <[email protected]> |
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* Stefan Jahn <[email protected]> |
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* Jerome Brock <[email protected]> |
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* Thomas Reitmayr ([email protected]) |
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* Mark Weaver <[email protected]> |
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* Jarod Wilson <[email protected]> |
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* Copyright (C) 2011 Andy Walls <[email protected]> |
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*/ |
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#include <asm/unaligned.h> |
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#include <linux/module.h> |
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#include <linux/init.h> |
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#include <linux/kernel.h> |
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#include <linux/string.h> |
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#include <linux/timer.h> |
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#include <linux/delay.h> |
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#include <linux/errno.h> |
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#include <linux/slab.h> |
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#include <linux/i2c.h> |
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#include <linux/workqueue.h> |
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#include <media/rc-core.h> |
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#include <media/i2c/ir-kbd-i2c.h> |
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#define FLAG_TX 1 |
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#define FLAG_HDPVR 2 |
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static bool enable_hdpvr; |
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module_param(enable_hdpvr, bool, 0644); |
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static int get_key_haup_common(struct IR_i2c *ir, enum rc_proto *protocol, |
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u32 *scancode, u8 *ptoggle, int size) |
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{ |
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unsigned char buf[6]; |
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int start, range, toggle, dev, code, ircode, vendor; |
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/* poll IR chip */ |
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if (size != i2c_master_recv(ir->c, buf, size)) |
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return -EIO; |
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if (buf[0] & 0x80) { |
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int offset = (size == 6) ? 3 : 0; |
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/* split rc5 data block ... */ |
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start = (buf[offset] >> 7) & 1; |
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range = (buf[offset] >> 6) & 1; |
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toggle = (buf[offset] >> 5) & 1; |
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dev = buf[offset] & 0x1f; |
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code = (buf[offset+1] >> 2) & 0x3f; |
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/* rc5 has two start bits |
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* the first bit must be one |
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* the second bit defines the command range: |
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* 1 = 0-63, 0 = 64 - 127 |
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*/ |
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if (!start) |
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/* no key pressed */ |
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return 0; |
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/* filter out invalid key presses */ |
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ircode = (start << 12) | (toggle << 11) | (dev << 6) | code; |
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if ((ircode & 0x1fff) == 0x1fff) |
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return 0; |
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if (!range) |
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code += 64; |
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dev_dbg(&ir->rc->dev, |
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"ir hauppauge (rc5): s%d r%d t%d dev=%d code=%d\n", |
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start, range, toggle, dev, code); |
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*protocol = RC_PROTO_RC5; |
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*scancode = RC_SCANCODE_RC5(dev, code); |
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*ptoggle = toggle; |
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return 1; |
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} else if (size == 6 && (buf[0] & 0x40)) { |
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code = buf[4]; |
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dev = buf[3]; |
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vendor = get_unaligned_be16(buf + 1); |
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if (vendor == 0x800f) { |
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*ptoggle = (dev & 0x80) != 0; |
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*protocol = RC_PROTO_RC6_MCE; |
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dev &= 0x7f; |
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dev_dbg(&ir->rc->dev, |
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"ir hauppauge (rc6-mce): t%d vendor=%d dev=%d code=%d\n", |
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*ptoggle, vendor, dev, code); |
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} else { |
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*ptoggle = 0; |
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*protocol = RC_PROTO_RC6_6A_32; |
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dev_dbg(&ir->rc->dev, |
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"ir hauppauge (rc6-6a-32): vendor=%d dev=%d code=%d\n", |
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vendor, dev, code); |
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} |
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*scancode = RC_SCANCODE_RC6_6A(vendor, dev, code); |
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return 1; |
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} |
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return 0; |
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} |
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static int get_key_haup(struct IR_i2c *ir, enum rc_proto *protocol, |
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u32 *scancode, u8 *toggle) |
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{ |
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return get_key_haup_common(ir, protocol, scancode, toggle, 3); |
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} |
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static int get_key_haup_xvr(struct IR_i2c *ir, enum rc_proto *protocol, |
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u32 *scancode, u8 *toggle) |
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{ |
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int ret; |
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unsigned char buf[1] = { 0 }; |
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/* |
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* This is the same apparent "are you ready?" poll command observed |
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* watching Windows driver traffic and implemented in lirc_zilog. With |
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* this added, we get far saner remote behavior with z8 chips on usb |
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* connected devices, even with the default polling interval of 100ms. |
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*/ |
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ret = i2c_master_send(ir->c, buf, 1); |
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if (ret != 1) |
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return (ret < 0) ? ret : -EINVAL; |
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return get_key_haup_common(ir, protocol, scancode, toggle, 6); |
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} |
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static int get_key_pixelview(struct IR_i2c *ir, enum rc_proto *protocol, |
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u32 *scancode, u8 *toggle) |
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{ |
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int rc; |
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unsigned char b; |
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/* poll IR chip */ |
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rc = i2c_master_recv(ir->c, &b, 1); |
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if (rc != 1) { |
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dev_dbg(&ir->rc->dev, "read error\n"); |
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if (rc < 0) |
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return rc; |
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return -EIO; |
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} |
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*protocol = RC_PROTO_OTHER; |
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*scancode = b; |
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*toggle = 0; |
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return 1; |
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} |
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static int get_key_fusionhdtv(struct IR_i2c *ir, enum rc_proto *protocol, |
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u32 *scancode, u8 *toggle) |
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{ |
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int rc; |
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unsigned char buf[4]; |
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/* poll IR chip */ |
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rc = i2c_master_recv(ir->c, buf, 4); |
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if (rc != 4) { |
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dev_dbg(&ir->rc->dev, "read error\n"); |
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if (rc < 0) |
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return rc; |
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return -EIO; |
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} |
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if (buf[0] != 0 || buf[1] != 0 || buf[2] != 0 || buf[3] != 0) |
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dev_dbg(&ir->rc->dev, "%s: %*ph\n", __func__, 4, buf); |
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/* no key pressed or signal from other ir remote */ |
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if(buf[0] != 0x1 || buf[1] != 0xfe) |
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return 0; |
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*protocol = RC_PROTO_UNKNOWN; |
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*scancode = buf[2]; |
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*toggle = 0; |
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return 1; |
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} |
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static int get_key_knc1(struct IR_i2c *ir, enum rc_proto *protocol, |
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u32 *scancode, u8 *toggle) |
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{ |
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int rc; |
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unsigned char b; |
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/* poll IR chip */ |
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rc = i2c_master_recv(ir->c, &b, 1); |
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if (rc != 1) { |
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dev_dbg(&ir->rc->dev, "read error\n"); |
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if (rc < 0) |
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return rc; |
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return -EIO; |
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} |
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/* it seems that 0xFE indicates that a button is still hold |
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down, while 0xff indicates that no button is hold |
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down. 0xfe sequences are sometimes interrupted by 0xFF */ |
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dev_dbg(&ir->rc->dev, "key %02x\n", b); |
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if (b == 0xff) |
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return 0; |
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if (b == 0xfe) |
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/* keep old data */ |
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return 1; |
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*protocol = RC_PROTO_UNKNOWN; |
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*scancode = b; |
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*toggle = 0; |
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return 1; |
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} |
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static int get_key_avermedia_cardbus(struct IR_i2c *ir, enum rc_proto *protocol, |
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u32 *scancode, u8 *toggle) |
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{ |
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unsigned char subaddr, key, keygroup; |
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struct i2c_msg msg[] = { { .addr = ir->c->addr, .flags = 0, |
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.buf = &subaddr, .len = 1}, |
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{ .addr = ir->c->addr, .flags = I2C_M_RD, |
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.buf = &key, .len = 1} }; |
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subaddr = 0x0d; |
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if (2 != i2c_transfer(ir->c->adapter, msg, 2)) { |
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dev_dbg(&ir->rc->dev, "read error\n"); |
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return -EIO; |
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} |
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if (key == 0xff) |
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return 0; |
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subaddr = 0x0b; |
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msg[1].buf = &keygroup; |
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if (2 != i2c_transfer(ir->c->adapter, msg, 2)) { |
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dev_dbg(&ir->rc->dev, "read error\n"); |
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return -EIO; |
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} |
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if (keygroup == 0xff) |
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return 0; |
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dev_dbg(&ir->rc->dev, "read key 0x%02x/0x%02x\n", key, keygroup); |
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if (keygroup < 2 || keygroup > 4) { |
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dev_warn(&ir->rc->dev, "warning: invalid key group 0x%02x for key 0x%02x\n", |
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keygroup, key); |
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} |
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key |= (keygroup & 1) << 6; |
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*protocol = RC_PROTO_UNKNOWN; |
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*scancode = key; |
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if (ir->c->addr == 0x41) /* AVerMedia EM78P153 */ |
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*scancode |= keygroup << 8; |
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*toggle = 0; |
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return 1; |
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} |
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/* ----------------------------------------------------------------------- */ |
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static int ir_key_poll(struct IR_i2c *ir) |
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{ |
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enum rc_proto protocol; |
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u32 scancode; |
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u8 toggle; |
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int rc; |
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dev_dbg(&ir->rc->dev, "%s\n", __func__); |
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rc = ir->get_key(ir, &protocol, &scancode, &toggle); |
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if (rc < 0) { |
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dev_warn(&ir->rc->dev, "error %d\n", rc); |
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return rc; |
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} |
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if (rc) { |
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dev_dbg(&ir->rc->dev, "%s: proto = 0x%04x, scancode = 0x%08x\n", |
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__func__, protocol, scancode); |
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rc_keydown(ir->rc, protocol, scancode, toggle); |
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} |
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return 0; |
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} |
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static void ir_work(struct work_struct *work) |
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{ |
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int rc; |
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struct IR_i2c *ir = container_of(work, struct IR_i2c, work.work); |
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/* |
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* If the transmit code is holding the lock, skip polling for |
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* IR, we'll get it to it next time round |
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*/ |
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if (mutex_trylock(&ir->lock)) { |
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rc = ir_key_poll(ir); |
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mutex_unlock(&ir->lock); |
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if (rc == -ENODEV) { |
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rc_unregister_device(ir->rc); |
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ir->rc = NULL; |
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return; |
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} |
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} |
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schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling_interval)); |
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} |
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static int ir_open(struct rc_dev *dev) |
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{ |
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struct IR_i2c *ir = dev->priv; |
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schedule_delayed_work(&ir->work, 0); |
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return 0; |
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} |
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static void ir_close(struct rc_dev *dev) |
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{ |
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struct IR_i2c *ir = dev->priv; |
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cancel_delayed_work_sync(&ir->work); |
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} |
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/* Zilog Transmit Interface */ |
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#define XTAL_FREQ 18432000 |
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#define ZILOG_SEND 0x80 |
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#define ZILOG_UIR_END 0x40 |
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#define ZILOG_INIT_END 0x20 |
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#define ZILOG_LIR_END 0x10 |
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#define ZILOG_STATUS_OK 0x80 |
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#define ZILOG_STATUS_TX 0x40 |
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#define ZILOG_STATUS_SET 0x20 |
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/* |
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* As you can see here, very few different lengths of pulse and space |
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* can be encoded. This means that the hardware does not work well with |
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* recorded IR. It's best to work with generated IR, like from ir-ctl or |
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* the in-kernel encoders. |
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*/ |
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struct code_block { |
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u8 length; |
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u16 pulse[7]; /* not aligned */ |
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u8 carrier_pulse; |
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u8 carrier_space; |
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u16 space[8]; /* not aligned */ |
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u8 codes[61]; |
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u8 csum[2]; |
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} __packed; |
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static int send_data_block(struct IR_i2c *ir, int cmd, |
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struct code_block *code_block) |
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{ |
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int i, j, ret; |
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u8 buf[5], *p; |
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p = &code_block->length; |
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for (i = 0; p < code_block->csum; i++) |
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code_block->csum[i & 1] ^= *p++; |
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p = &code_block->length; |
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for (i = 0; i < sizeof(*code_block);) { |
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int tosend = sizeof(*code_block) - i; |
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if (tosend > 4) |
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tosend = 4; |
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buf[0] = i + 1; |
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for (j = 0; j < tosend; ++j) |
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buf[1 + j] = p[i + j]; |
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dev_dbg(&ir->rc->dev, "%*ph", tosend + 1, buf); |
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ret = i2c_master_send(ir->tx_c, buf, tosend + 1); |
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if (ret != tosend + 1) { |
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dev_dbg(&ir->rc->dev, |
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"i2c_master_send failed with %d\n", ret); |
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return ret < 0 ? ret : -EIO; |
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} |
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i += tosend; |
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} |
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buf[0] = 0; |
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buf[1] = cmd; |
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ret = i2c_master_send(ir->tx_c, buf, 2); |
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if (ret != 2) { |
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dev_err(&ir->rc->dev, "i2c_master_send failed with %d\n", ret); |
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return ret < 0 ? ret : -EIO; |
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} |
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usleep_range(2000, 5000); |
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ret = i2c_master_send(ir->tx_c, buf, 1); |
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if (ret != 1) { |
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dev_err(&ir->rc->dev, "i2c_master_send failed with %d\n", ret); |
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return ret < 0 ? ret : -EIO; |
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} |
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return 0; |
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} |
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static int zilog_init(struct IR_i2c *ir) |
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{ |
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struct code_block code_block = { .length = sizeof(code_block) }; |
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u8 buf[4]; |
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int ret; |
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put_unaligned_be16(0x1000, &code_block.pulse[3]); |
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ret = send_data_block(ir, ZILOG_INIT_END, &code_block); |
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if (ret) |
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return ret; |
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ret = i2c_master_recv(ir->tx_c, buf, 4); |
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if (ret != 4) { |
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dev_err(&ir->c->dev, "failed to retrieve firmware version: %d\n", |
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ret); |
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return ret < 0 ? ret : -EIO; |
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} |
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dev_info(&ir->c->dev, "Zilog/Hauppauge IR blaster firmware version %d.%d.%d\n", |
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buf[1], buf[2], buf[3]); |
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return 0; |
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} |
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/* |
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* If the last slot for pulse is the same as the current slot for pulse, |
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* then use slot no 7. |
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*/ |
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static void copy_codes(u8 *dst, u8 *src, unsigned int count) |
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{ |
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u8 c, last = 0xff; |
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while (count--) { |
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c = *src++; |
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if ((c & 0xf0) == last) { |
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*dst++ = 0x70 | (c & 0xf); |
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} else { |
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*dst++ = c; |
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last = c & 0xf0; |
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} |
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} |
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} |
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/* |
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* When looking for repeats, we don't care about the trailing space. This |
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* is set to the shortest possible anyway. |
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*/ |
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static int cmp_no_trail(u8 *a, u8 *b, unsigned int count) |
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{ |
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while (--count) { |
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if (*a++ != *b++) |
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return 1; |
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} |
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return (*a & 0xf0) - (*b & 0xf0); |
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} |
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static int find_slot(u16 *array, unsigned int size, u16 val) |
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{ |
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int i; |
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for (i = 0; i < size; i++) { |
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if (get_unaligned_be16(&array[i]) == val) { |
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return i; |
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} else if (!array[i]) { |
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put_unaligned_be16(val, &array[i]); |
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return i; |
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} |
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} |
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return -1; |
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} |
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static int zilog_ir_format(struct rc_dev *rcdev, unsigned int *txbuf, |
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unsigned int count, struct code_block *code_block) |
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{ |
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struct IR_i2c *ir = rcdev->priv; |
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int rep, i, l, p = 0, s, c = 0; |
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bool repeating; |
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u8 codes[174]; |
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code_block->carrier_pulse = DIV_ROUND_CLOSEST( |
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ir->duty_cycle * XTAL_FREQ / 1000, ir->carrier); |
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code_block->carrier_space = DIV_ROUND_CLOSEST( |
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(100 - ir->duty_cycle) * XTAL_FREQ / 1000, ir->carrier); |
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for (i = 0; i < count; i++) { |
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if (c >= ARRAY_SIZE(codes) - 1) { |
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dev_warn(&rcdev->dev, "IR too long, cannot transmit\n"); |
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return -EINVAL; |
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} |
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/* |
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* Lengths more than 142220us cannot be encoded; also |
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* this checks for multiply overflow |
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*/ |
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if (txbuf[i] > 142220) |
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return -EINVAL; |
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l = DIV_ROUND_CLOSEST((XTAL_FREQ / 1000) * txbuf[i], 40000); |
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if (i & 1) { |
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s = find_slot(code_block->space, |
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ARRAY_SIZE(code_block->space), l); |
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if (s == -1) { |
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dev_warn(&rcdev->dev, "Too many different lengths spaces, cannot transmit"); |
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return -EINVAL; |
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} |
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/* We have a pulse and space */ |
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codes[c++] = (p << 4) | s; |
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} else { |
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p = find_slot(code_block->pulse, |
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ARRAY_SIZE(code_block->pulse), l); |
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if (p == -1) { |
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dev_warn(&rcdev->dev, "Too many different lengths pulses, cannot transmit"); |
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return -EINVAL; |
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} |
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} |
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} |
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/* We have to encode the trailing pulse. Find the shortest space */ |
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s = 0; |
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for (i = 1; i < ARRAY_SIZE(code_block->space); i++) { |
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u16 d = get_unaligned_be16(&code_block->space[i]); |
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if (get_unaligned_be16(&code_block->space[s]) > d) |
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s = i; |
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} |
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codes[c++] = (p << 4) | s; |
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dev_dbg(&rcdev->dev, "generated %d codes\n", c); |
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|
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/* |
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* Are the last N codes (so pulse + space) repeating 3 times? |
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* if so we can shorten the codes list and use code 0xc0 to repeat |
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* them. |
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*/ |
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repeating = false; |
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for (rep = c / 3; rep >= 1; rep--) { |
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if (!memcmp(&codes[c - rep * 3], &codes[c - rep * 2], rep) && |
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!cmp_no_trail(&codes[c - rep], &codes[c - rep * 2], rep)) { |
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repeating = true; |
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break; |
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} |
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} |
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if (repeating) { |
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/* first copy any leading non-repeating */ |
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int leading = c - rep * 3; |
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|
|
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; |
|
} |
|
|
|
i = i2c_master_recv(ir->tx_c, buf, 1); |
|
if (i != 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) |
|
{ |
|
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 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; |
|
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_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 int 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); |
|
|
|
return 0; |
|
} |
|
|
|
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 = 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");
|
|
|