From 58e6f95e613b37372a58fd504646ae1b1964c2ed Mon Sep 17 00:00:00 2001 From: Patrick Boettcher Date: Sat, 29 Mar 2008 21:37:01 -0300 Subject: [PATCH] V4L/DVB (7474): support key repeat with dib0700 ir receiver This patch enables support for repeating last event when a key is holded down with dib0700 devices. It works with rc5 and nec remotes. It also fixes an annoying bug that floods kernel log with "Unknown key" messages after each keypress. This happened because the driver was not resetting infrared register after each poll so it kept polling last key even if nothing was being pressed. Fixing this, (calling rc_setup after each poll), permits to implement key repeat. Signed-off-by: Filippo Argiolas Signed-off-by: Patrick Boettcher Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb/dvb-usb/dib0700.h | 4 ++ drivers/media/dvb/dvb-usb/dib0700_core.c | 4 +- drivers/media/dvb/dvb-usb/dib0700_devices.c | 58 +++++++++++++++++++-- 3 files changed, 61 insertions(+), 5 deletions(-) diff --git a/drivers/media/dvb/dvb-usb/dib0700.h b/drivers/media/dvb/dvb-usb/dib0700.h index 4a903ea958..66d4dc6ba4 100644 --- a/drivers/media/dvb/dvb-usb/dib0700.h +++ b/drivers/media/dvb/dvb-usb/dib0700.h @@ -37,6 +37,7 @@ struct dib0700_state { u8 channel_state; u16 mt2060_if1[2]; u8 rc_toggle; + u8 rc_counter; u8 is_dib7000pc; }; @@ -44,12 +45,15 @@ extern int dib0700_set_gpio(struct dvb_usb_device *, enum dib07x0_gpios gpio, u8 extern int dib0700_ctrl_clock(struct dvb_usb_device *d, u32 clk_MHz, u8 clock_out_gp3); extern int dib0700_ctrl_rd(struct dvb_usb_device *d, u8 *tx, u8 txlen, u8 *rx, u8 rxlen); extern int dib0700_download_firmware(struct usb_device *udev, const struct firmware *fw); +extern int dib0700_rc_setup(struct dvb_usb_device *d); extern int dib0700_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff); extern struct i2c_algorithm dib0700_i2c_algo; extern int dib0700_identify_state(struct usb_device *udev, struct dvb_usb_device_properties *props, struct dvb_usb_device_description **desc, int *cold); extern int dib0700_device_count; +extern int dvb_usb_dib0700_ir_proto; extern struct dvb_usb_device_properties dib0700_devices[]; extern struct usb_device_id dib0700_usb_id_table[]; + #endif diff --git a/drivers/media/dvb/dvb-usb/dib0700_core.c b/drivers/media/dvb/dvb-usb/dib0700_core.c index c9857d5c69..4b3836e63b 100644 --- a/drivers/media/dvb/dvb-usb/dib0700_core.c +++ b/drivers/media/dvb/dvb-usb/dib0700_core.c @@ -13,7 +13,7 @@ int dvb_usb_dib0700_debug; module_param_named(debug,dvb_usb_dib0700_debug, int, 0644); MODULE_PARM_DESC(debug, "set debugging level (1=info,2=fw,4=fwdata,8=data (or-able))." DVB_USB_DEBUG_STATUS); -static int dvb_usb_dib0700_ir_proto = 1; +int dvb_usb_dib0700_ir_proto = 1; module_param(dvb_usb_dib0700_ir_proto, int, 0644); MODULE_PARM_DESC(dvb_usb_dib0700_ir_proto, "set ir protocol (0=NEC, 1=RC5 (default), 2=RC6)."); @@ -261,7 +261,7 @@ int dib0700_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff) return dib0700_ctrl_wr(adap->dev, b, 4); } -static int dib0700_rc_setup(struct dvb_usb_device *d) +int dib0700_rc_setup(struct dvb_usb_device *d) { u8 rc_setup[3] = {REQUEST_SET_RC, dvb_usb_dib0700_ir_proto, 0}; int i = dib0700_ctrl_wr(d, rc_setup, 3); diff --git a/drivers/media/dvb/dvb-usb/dib0700_devices.c b/drivers/media/dvb/dvb-usb/dib0700_devices.c index 9fd8399e5d..fe96f79579 100644 --- a/drivers/media/dvb/dvb-usb/dib0700_devices.c +++ b/drivers/media/dvb/dvb-usb/dib0700_devices.c @@ -445,6 +445,9 @@ static int stk7700ph_tuner_attach(struct dvb_usb_adapter *adap) static u8 rc_request[] = { REQUEST_POLL_RC, 0 }; +/* Number of keypresses to ignore before start repeating */ +#define RC_REPEAT_DELAY 2 + static int dib0700_rc_query(struct dvb_usb_device *d, u32 *event, int *state) { u8 key[4]; @@ -458,18 +461,67 @@ static int dib0700_rc_query(struct dvb_usb_device *d, u32 *event, int *state) err("RC Query Failed"); return -1; } + + /* losing half of KEY_0 events from Philipps rc5 remotes.. */ if (key[0]==0 && key[1]==0 && key[2]==0 && key[3]==0) return 0; - if (key[3-1]!=st->rc_toggle) { + + /* info("%d: %2X %2X %2X %2X",dvb_usb_dib0700_ir_proto,(int)key[3-2],(int)key[3-3],(int)key[3-1],(int)key[3]); */ + + dib0700_rc_setup(d); /* reset ir sensor data to prevent false events */ + + switch (dvb_usb_dib0700_ir_proto) { + case 0: { + /* NEC protocol sends repeat code as 0 0 0 FF */ + if ((key[3-2] == 0x00) && (key[3-3] == 0x00) && + (key[3] == 0xFF)) { + st->rc_counter++; + if (st->rc_counter > RC_REPEAT_DELAY) { + *event = d->last_event; + *state = REMOTE_KEY_PRESSED; + st->rc_counter = RC_REPEAT_DELAY; + } + return 0; + } for (i=0;iprops.rc_key_map_size; i++) { if (keymap[i].custom == key[3-2] && keymap[i].data == key[3-3]) { + st->rc_counter = 0; + *event = keymap[i].event; + *state = REMOTE_KEY_PRESSED; + d->last_event = keymap[i].event; + return 0; + } + } + break; + } + default: { + /* RC-5 protocol changes toggle bit on new keypress */ + for (i = 0; i < d->props.rc_key_map_size; i++) { + if (keymap[i].custom == key[3-2] && keymap[i].data == key[3-3]) { + if (d->last_event == keymap[i].event && + key[3-1] == st->rc_toggle) { + st->rc_counter++; + /* prevents unwanted double hits */ + if (st->rc_counter > RC_REPEAT_DELAY) { + *event = d->last_event; + *state = REMOTE_KEY_PRESSED; + st->rc_counter = RC_REPEAT_DELAY; + } + + return 0; + } + st->rc_counter = 0; *event = keymap[i].event; *state = REMOTE_KEY_PRESSED; - st->rc_toggle=key[3-1]; + st->rc_toggle = key[3-1]; + d->last_event = keymap[i].event; return 0; } } - err("Unknown remote controller key : %2X %2X",(int)key[3-2],(int)key[3-3]); + break; + } } + err("Unknown remote controller key: %2X %2X %2X %2X", (int) key[3-2], (int) key[3-3], (int) key[3-1], (int) key[3]); + d->last_event = 0; return 0; } -- 2.39.5