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V4L/DVB: ir-core: Add support for badly-implemented hardware decoders 

A few hardware Remote Controller decoders, even using a standard protocol,
aren't able to provide the entire scancode. Due to that, the capability
of using other IR's are limited on those hardware.

Adds a way to indicate to ir-core what are the bits that the hardware
provides, from a scancode, allowing the addition of a complete IR table
to the kernel and allowing a limited support for changing the Remote
Controller on those devices.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Mauro Carvalho Chehab 2010-04-04 14:06:55 -03:00
parent 4f9256b496
commit 9dfe4e8339
6 changed files with 153 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
drivers/media/IR/ir-keytable.c
View File

@ -89,6 +89,18 @@ static int ir_do_setkeycode(struct input_dev *dev,
{
unsigned int i;
int old_keycode = KEY_RESERVED;
struct ir_input_dev *ir_dev = input_get_drvdata(dev);
/*
* Unfortunately, some hardware-based IR decoders don't provide
* all bits for the complete IR code. In general, they provide only
* the command part of the IR code. Yet, as it is possible to replace
* the provided IR with another one, it is needed to allow loading
* IR tables from other remotes. So,
*/
if (ir_dev->props && ir_dev->props->scanmask) {
scancode &= ir_dev->props->scanmask;
}
/* First check if we already have a mapping for this ir command */
for (i = 0; i < rc_tab->len; i++) {
@ -448,6 +460,13 @@ int __ir_input_register(struct input_dev *input_dev,
sizeof(struct ir_scancode));
ir_dev->rc_tab.scan = kmalloc(ir_dev->rc_tab.alloc, GFP_KERNEL);
ir_dev->rc_tab.size = ir_dev->rc_tab.alloc / sizeof(struct ir_scancode);
if (props) {
ir_dev->props = props;
if (props->open)
input_dev->open = ir_open;
if (props->close)
input_dev->close = ir_close;
}
if (!ir_dev->rc_tab.scan) {
rc = -ENOMEM;
@ -465,12 +484,6 @@ int __ir_input_register(struct input_dev *input_dev,
goto out_table;
}
ir_dev->props = props;
if (props && props->open)
input_dev->open = ir_open;
if (props && props->close)
input_dev->close = ir_close;
rc = ir_register_class(input_dev);
if (rc < 0)
goto out_table;

1
drivers/media/IR/keymaps/Makefile
View File

@ -46,6 +46,7 @@ obj-$(CONFIG_RC_MAP) += rc-adstech-dvb-t-pci.o \
rc-pinnacle-grey.o \
rc-pinnacle-pctv-hd.o \
rc-pixelview.o \
rc-pixelview-mk12.o \
rc-pixelview-new.o \
rc-powercolor-real-angel.o \
rc-proteus-2309.o \

83
drivers/media/IR/keymaps/rc-pixelview-mk12.c Normal file
View File

@ -0,0 +1,83 @@
/* rc-pixelview-mk12.h - Keytable for pixelview Remote Controller
*
* keymap imported from ir-keymaps.c
*
* Copyright (c) 2010 by Mauro Carvalho Chehab <mchehab@redhat.com>
*
* 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.
*/
#include <media/rc-map.h>
/*
* Keytable for MK-F12 IR remote provided together with Pixelview
* Ultra Pro Remote Controller. Uses NEC extended format.
*/
static struct ir_scancode pixelview_mk12[] = {
{ 0x866b03, KEY_TUNER }, /* Timeshift */
{ 0x866b1e, KEY_POWER2 }, /* power */
{ 0x866b01, KEY_1 },
{ 0x866b0b, KEY_2 },
{ 0x866b1b, KEY_3 },
{ 0x866b05, KEY_4 },
{ 0x866b09, KEY_5 },
{ 0x866b15, KEY_6 },
{ 0x866b06, KEY_7 },
{ 0x866b0a, KEY_8 },
{ 0x866b12, KEY_9 },
{ 0x866b02, KEY_0 },
{ 0x866b13, KEY_AGAIN }, /* loop */
{ 0x866b10, KEY_DIGITS }, /* +100 */
{ 0x866b00, KEY_MEDIA }, /* source */
{ 0x866b18, KEY_MUTE }, /* mute */
{ 0x866b19, KEY_CAMERA }, /* snapshot */
{ 0x866b1a, KEY_SEARCH }, /* scan */
{ 0x866b16, KEY_CHANNELUP }, /* chn + */
{ 0x866b14, KEY_CHANNELDOWN }, /* chn - */
{ 0x866b1f, KEY_VOLUMEUP }, /* vol + */
{ 0x866b17, KEY_VOLUMEDOWN }, /* vol - */
{ 0x866b1c, KEY_ZOOM }, /* zoom */
{ 0x866b04, KEY_REWIND },
{ 0x866b0e, KEY_RECORD },
{ 0x866b0c, KEY_FORWARD },
{ 0x866b1d, KEY_STOP },
{ 0x866b08, KEY_PLAY },
{ 0x866b0f, KEY_PAUSE },
{ 0x866b0d, KEY_TV },
{ 0x866b07, KEY_RADIO }, /* FM */
};
static struct rc_keymap pixelview_map = {
.map = {
.scan = pixelview_mk12,
.size = ARRAY_SIZE(pixelview_mk12),
.ir_type = IR_TYPE_NEC,
.name = RC_MAP_PIXELVIEW_MK12,
}
};
static int __init init_rc_map_pixelview(void)
{
return ir_register_map(&pixelview_map);
}
static void __exit exit_rc_map_pixelview(void)
{
ir_unregister_map(&pixelview_map);
}
module_init(init_rc_map_pixelview)
module_exit(exit_rc_map_pixelview)
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@redhat.com>");

30
drivers/media/video/cx88/cx88-input.c
View File

@ -248,6 +248,9 @@ int cx88_ir_init(struct cx88_core *core, struct pci_dev *pci)
char *ir_codes = NULL;
u64 ir_type = IR_TYPE_OTHER;
int err = -ENOMEM;
u32 hardware_mask = 0; /* For devices with a hardware mask, when
* used with a full-code IR table
*/
ir = kzalloc(sizeof(*ir), GFP_KERNEL);
input_dev = input_allocate_device();
@ -314,11 +317,18 @@ int cx88_ir_init(struct cx88_core *core, struct pci_dev *pci)
break;
case CX88_BOARD_PROLINK_PLAYTVPVR:
case CX88_BOARD_PIXELVIEW_PLAYTV_ULTRA_PRO:
ir_codes = RC_MAP_PIXELVIEW;
/*
* It seems that this hardware is paired with NEC extended
* address 0x866b. So, unfortunately, its usage with other
* IR's with different address won't work. Still, there are
* other IR's from the same manufacturer that works, like the
* 002-T mini RC, provided with newer PV hardware
*/
ir_codes = RC_MAP_PIXELVIEW_MK12;
ir->gpio_addr = MO_GP1_IO;
ir->mask_keycode = 0x1f; /* Only command is retrieved */
ir->mask_keyup = 0x80;
ir->polling = 10; /* ms */
hardware_mask = 0x3f; /* Hardware returns only 6 bits from command part */
break;
case CX88_BOARD_PROLINK_PV_8000GT:
case CX88_BOARD_PROLINK_PV_GLOBAL_XTREME:
@ -410,6 +420,21 @@ int cx88_ir_init(struct cx88_core *core, struct pci_dev *pci)
goto err_out_free;
}
/*
* The usage of mask_keycode were very convenient, due to several
* reasons. Among others, the scancode tables were using the scancode
* as the index elements. So, the less bits it was used, the smaller
* the table were stored. After the input changes, the better is to use
* the full scancodes, since it allows replacing the IR remote by
* another one. Unfortunately, there are still some hardware, like
* Pixelview Ultra Pro, where only part of the scancode is sent via
* GPIO. So, there's no way to get the full scancode. Due to that,
* hardware_mask were introduced here: it represents those hardware
* that has such limits.
*/
if (hardware_mask && !ir->mask_keycode)
ir->mask_keycode = hardware_mask;
/* init input device */
snprintf(ir->name, sizeof(ir->name), "cx88 IR (%s)", core->board.name);
snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0", pci_name(pci));
@ -437,6 +462,7 @@ int cx88_ir_init(struct cx88_core *core, struct pci_dev *pci)
ir->props.priv = core;
ir->props.open = cx88_ir_open;
ir->props.close = cx88_ir_close;
ir->props.scanmask = hardware_mask;
/* all done */
err = ir_input_register(ir->input, ir_codes, &ir->props, MODULE_NAME);

16
include/media/ir-core.h
View File

@ -33,8 +33,24 @@ enum raw_event_type {
IR_STOP_EVENT = (1 << 3),
};
/**
* struct ir_dev_props - Allow caller drivers to set special properties
* @allowed_protos: bitmask with the supported IR_TYPE_* protocols
* @scanmask: some hardware decoders are not capable of providing the full
* scancode to the application. As this is a hardware limit, we can't do
* anything with it. Yet, as the same keycode table can be used with other
* devices, a mask is provided to allow its usage. Drivers should generally
* leave this field in blank
* @priv: driver-specific data, to be used on the callbacks
* @change_protocol: allow changing the protocol used on hardware decoders
* @open: callback to allow drivers to enable polling/irq when IR input device
* is opened.
* @close: callback to allow drivers to disable polling/irq when IR input device
* is opened.
*/
struct ir_dev_props {
unsigned long allowed_protos;
u32 scanmask;
void *priv;
int (*change_protocol)(void *priv, u64 ir_type);
int (*open)(void *priv);

3
include/media/rc-map.h
View File

@ -18,7 +18,7 @@
#define IR_TYPE_OTHER (1u << 31)
struct ir_scancode {
u16 scancode;
u32 scancode;
u32 keycode;
};
@ -95,6 +95,7 @@ void rc_map_init(void);
#define RC_MAP_PINNACLE_PCTV_HD "rc-pinnacle-pctv-hd"
#define RC_MAP_PIXELVIEW_NEW "rc-pixelview-new"
#define RC_MAP_PIXELVIEW "rc-pixelview"
#define RC_MAP_PIXELVIEW_MK12 "rc-pixelview-mk12"
#define RC_MAP_POWERCOLOR_REAL_ANGEL "rc-powercolor-real-angel"
#define RC_MAP_PROTEUS_2309 "rc-proteus-2309"
#define RC_MAP_PURPLETV "rc-purpletv"