[PATCH] v4l: (939) Support for nebula rc5 based gpio remote
Support for Nebula rc5-based gpio remote.
Signed-off-by: Mark Weaver <mark-clist@npsl.co.uk>
Signed-off-by: Nickolay V. Shmyrev <nshmyrev@yandex.ru>
Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/media/video/bttv-cards.c b/drivers/media/video/bttv-cards.c
index 66ed9ea..e31ebb1 100644
--- a/drivers/media/video/bttv-cards.c
+++ b/drivers/media/video/bttv-cards.c
@@ -2133,7 +2133,10 @@
.tuner_addr = ADDR_UNSET,
.radio_addr = ADDR_UNSET,
.has_dvb = 1,
+ .has_remote = 1,
+ .gpiomask = 0x1b,
.no_gpioirq = 1,
+ .any_irq = 1,
},
[BTTV_BOARD_PV143] = {
/* Jorge Boncompte - DTI2 <jorge@dti2.net> */
@@ -3384,6 +3387,8 @@
btv->has_remote=1;
if (!bttv_tvcards[btv->c.type].no_gpioirq)
btv->gpioirq=1;
+ if (bttv_tvcards[btv->c.type].any_irq)
+ btv->any_irq = 1;
if (bttv_tvcards[btv->c.type].audio_hook)
btv->audio_hook=bttv_tvcards[btv->c.type].audio_hook;
diff --git a/drivers/media/video/bttv-driver.c b/drivers/media/video/bttv-driver.c
index 0005741..709099f 100644
--- a/drivers/media/video/bttv-driver.c
+++ b/drivers/media/video/bttv-driver.c
@@ -3667,6 +3667,10 @@
int handled = 0;
btv=(struct bttv *)dev_id;
+
+ if (btv->any_irq)
+ handled = bttv_any_irq(&btv->c);
+
count=0;
while (1) {
/* get/clear interrupt status bits */
diff --git a/drivers/media/video/bttv-gpio.c b/drivers/media/video/bttv-gpio.c
index 575ce8b..616a5b7 100644
--- a/drivers/media/video/bttv-gpio.c
+++ b/drivers/media/video/bttv-gpio.c
@@ -113,6 +113,24 @@
}
}
+int bttv_any_irq(struct bttv_core *core)
+{
+ struct bttv_sub_driver *drv;
+ struct bttv_sub_device *dev;
+ struct list_head *item;
+ int handled = 0;
+
+ list_for_each(item,&core->subs) {
+ dev = list_entry(item,struct bttv_sub_device,list);
+ drv = to_bttv_sub_drv(dev->dev.driver);
+ if (drv && drv->any_irq) {
+ if (drv->any_irq(dev))
+ handled = 1;
+ }
+ }
+ return handled;
+}
+
/* ----------------------------------------------------------------------- */
/* external: sub-driver register/unregister */
diff --git a/drivers/media/video/bttv.h b/drivers/media/video/bttv.h
index c182524..93298f0 100644
--- a/drivers/media/video/bttv.h
+++ b/drivers/media/video/bttv.h
@@ -235,6 +235,7 @@
unsigned int has_dvb:1;
unsigned int has_remote:1;
unsigned int no_gpioirq:1;
+ unsigned int any_irq:1;
/* other settings */
unsigned int pll;
@@ -334,6 +335,7 @@
struct device_driver drv;
char wanted[BUS_ID_SIZE];
void (*gpio_irq)(struct bttv_sub_device *sub);
+ int (*any_irq)(struct bttv_sub_device *sub);
};
#define to_bttv_sub_drv(x) container_of((x), struct bttv_sub_driver, drv)
diff --git a/drivers/media/video/bttvp.h b/drivers/media/video/bttvp.h
index 386f546..3aa9c6e 100644
--- a/drivers/media/video/bttvp.h
+++ b/drivers/media/video/bttvp.h
@@ -208,6 +208,7 @@
int bttv_sub_add_device(struct bttv_core *core, char *name);
int bttv_sub_del_devices(struct bttv_core *core);
void bttv_gpio_irq(struct bttv_core *core);
+int bttv_any_irq(struct bttv_core *core);
/* ---------------------------------------------------------- */
@@ -273,6 +274,7 @@
struct bttv_pll_info pll;
int triton1;
int gpioirq;
+ int any_irq;
int use_i2c_hw;
/* old gpio interface */
diff --git a/drivers/media/video/ir-kbd-gpio.c b/drivers/media/video/ir-kbd-gpio.c
index ed81934..5abfc0fb 100644
--- a/drivers/media/video/ir-kbd-gpio.c
+++ b/drivers/media/video/ir-kbd-gpio.c
@@ -221,24 +221,99 @@
[ 24 ] = KEY_MUTE // mute/unmute
};
+static IR_KEYTAB_TYPE ir_codes_nebula[IR_KEYTAB_SIZE] = {
+ [0x00] = KEY_KP0,
+ [0x01] = KEY_KP1,
+ [0x02] = KEY_KP2,
+ [0x03] = KEY_KP3,
+ [0x04] = KEY_KP4,
+ [0x05] = KEY_KP5,
+ [0x06] = KEY_KP6,
+ [0x07] = KEY_KP7,
+ [0x08] = KEY_KP8,
+ [0x09] = KEY_KP9,
+ [0x0a] = KEY_TV,
+ [0x0b] = KEY_AUX,
+ [0x0c] = KEY_DVD,
+ [0x0d] = KEY_POWER,
+ [0x0e] = KEY_MHP, /* labelled 'Picture' */
+ [0x0f] = KEY_AUDIO,
+ [0x10] = KEY_INFO,
+ [0x11] = KEY_F13, /* 16:9 */
+ [0x12] = KEY_F14, /* 14:9 */
+ [0x13] = KEY_EPG,
+ [0x14] = KEY_EXIT,
+ [0x15] = KEY_MENU,
+ [0x16] = KEY_UP,
+ [0x17] = KEY_DOWN,
+ [0x18] = KEY_LEFT,
+ [0x19] = KEY_RIGHT,
+ [0x1a] = KEY_ENTER,
+ [0x1b] = KEY_CHANNELUP,
+ [0x1c] = KEY_CHANNELDOWN,
+ [0x1d] = KEY_VOLUMEUP,
+ [0x1e] = KEY_VOLUMEDOWN,
+ [0x1f] = KEY_RED,
+ [0x20] = KEY_GREEN,
+ [0x21] = KEY_YELLOW,
+ [0x22] = KEY_BLUE,
+ [0x23] = KEY_SUBTITLE,
+ [0x24] = KEY_F15, /* AD */
+ [0x25] = KEY_TEXT,
+ [0x26] = KEY_MUTE,
+ [0x27] = KEY_REWIND,
+ [0x28] = KEY_STOP,
+ [0x29] = KEY_PLAY,
+ [0x2a] = KEY_FASTFORWARD,
+ [0x2b] = KEY_F16, /* chapter */
+ [0x2c] = KEY_PAUSE,
+ [0x2d] = KEY_PLAY,
+ [0x2e] = KEY_RECORD,
+ [0x2f] = KEY_F17, /* picture in picture */
+ [0x30] = KEY_KPPLUS, /* zoom in */
+ [0x31] = KEY_KPMINUS, /* zoom out */
+ [0x32] = KEY_F18, /* capture */
+ [0x33] = KEY_F19, /* web */
+ [0x34] = KEY_EMAIL,
+ [0x35] = KEY_PHONE,
+ [0x36] = KEY_PC
+};
+
struct IR {
struct bttv_sub_device *sub;
struct input_dev *input;
struct ir_input_state ir;
char name[32];
char phys[32];
+
+ /* Usual gpio signalling */
+
u32 mask_keycode;
u32 mask_keydown;
u32 mask_keyup;
-
- int polling;
+ u32 polling;
u32 last_gpio;
struct work_struct work;
struct timer_list timer;
+
+ /* RC5 gpio */
+
+ u32 rc5_gpio;
+ struct timer_list timer_end; /* timer_end for code completion */
+ struct timer_list timer_keyup; /* timer_end for key release */
+ u32 last_rc5; /* last good rc5 code */
+ u32 last_bit; /* last raw bit seen */
+ u32 code; /* raw code under construction */
+ struct timeval base_time; /* time of last seen code */
+ int active; /* building raw code */
};
static int debug;
module_param(debug, int, 0644); /* debug level (0,1,2) */
+static int repeat_delay = 500;
+module_param(repeat_delay, int, 0644);
+static int repeat_period = 33;
+module_param(repeat_period, int, 0644);
#define DEVNAME "ir-kbd-gpio"
#define dprintk(fmt, arg...) if (debug) \
@@ -254,7 +329,7 @@
.probe = ir_probe,
.remove = ir_remove,
},
- .gpio_irq = ir_irq,
+ .gpio_irq = ir_irq,
};
/* ---------------------------------------------------------------------- */
@@ -327,6 +402,173 @@
mod_timer(&ir->timer, timeout);
}
+/* ---------------------------------------------------------------*/
+
+static int rc5_remote_gap = 885;
+module_param(rc5_remote_gap, int, 0644);
+static int rc5_key_timeout = 200;
+module_param(rc5_key_timeout, int, 0644);
+
+#define RC5_START(x) (((x)>>12)&3)
+#define RC5_TOGGLE(x) (((x)>>11)&1)
+#define RC5_ADDR(x) (((x)>>6)&31)
+#define RC5_INSTR(x) ((x)&63)
+
+/* decode raw bit pattern to RC5 code */
+static u32 rc5_decode(unsigned int code)
+{
+ unsigned int org_code = code;
+ unsigned int pair;
+ unsigned int rc5 = 0;
+ int i;
+
+ code = (code << 1) | 1;
+ for (i = 0; i < 14; ++i) {
+ pair = code & 0x3;
+ code >>= 2;
+
+ rc5 <<= 1;
+ switch (pair) {
+ case 0:
+ case 2:
+ break;
+ case 1:
+ rc5 |= 1;
+ break;
+ case 3:
+ dprintk("bad code: %x\n", org_code);
+ return 0;
+ }
+ }
+ dprintk("code=%x, rc5=%x, start=%x, toggle=%x, address=%x, "
+ "instr=%x\n", rc5, org_code, RC5_START(rc5),
+ RC5_TOGGLE(rc5), RC5_ADDR(rc5), RC5_INSTR(rc5));
+ return rc5;
+}
+
+static int ir_rc5_irq(struct bttv_sub_device *sub)
+{
+ struct IR *ir = dev_get_drvdata(&sub->dev);
+ struct timeval tv;
+ u32 gpio;
+ u32 gap;
+ unsigned long current_jiffies, timeout;
+
+ /* read gpio port */
+ gpio = bttv_gpio_read(ir->sub->core);
+
+ /* remote IRQ? */
+ if (!(gpio & 0x20))
+ return 0;
+
+ /* get time of bit */
+ current_jiffies = jiffies;
+ do_gettimeofday(&tv);
+
+ /* avoid overflow with gap >1s */
+ if (tv.tv_sec - ir->base_time.tv_sec > 1) {
+ gap = 200000;
+ } else {
+ gap = 1000000 * (tv.tv_sec - ir->base_time.tv_sec) +
+ tv.tv_usec - ir->base_time.tv_usec;
+ }
+
+ /* active code => add bit */
+ if (ir->active) {
+ /* only if in the code (otherwise spurious IRQ or timer
+ late) */
+ if (ir->last_bit < 28) {
+ ir->last_bit = (gap - rc5_remote_gap / 2) /
+ rc5_remote_gap;
+ ir->code |= 1 << ir->last_bit;
+ }
+ /* starting new code */
+ } else {
+ ir->active = 1;
+ ir->code = 0;
+ ir->base_time = tv;
+ ir->last_bit = 0;
+
+ timeout = current_jiffies + (500 + 30 * HZ) / 1000;
+ mod_timer(&ir->timer_end, timeout);
+ }
+
+ /* toggle GPIO pin 4 to reset the irq */
+ bttv_gpio_write(ir->sub->core, gpio & ~(1 << 4));
+ bttv_gpio_write(ir->sub->core, gpio | (1 << 4));
+ return 1;
+}
+
+static void ir_rc5_timer_end(unsigned long data)
+{
+ struct IR *ir = (struct IR *)data;
+ struct timeval tv;
+ unsigned long current_jiffies, timeout;
+ u32 gap;
+
+ /* get time */
+ current_jiffies = jiffies;
+ do_gettimeofday(&tv);
+
+ /* avoid overflow with gap >1s */
+ if (tv.tv_sec - ir->base_time.tv_sec > 1) {
+ gap = 200000;
+ } else {
+ gap = 1000000 * (tv.tv_sec - ir->base_time.tv_sec) +
+ tv.tv_usec - ir->base_time.tv_usec;
+ }
+
+ /* Allow some timmer jitter (RC5 is ~24ms anyway so this is ok) */
+ if (gap < 28000) {
+ dprintk("spurious timer_end\n");
+ return;
+ }
+
+ ir->active = 0;
+ if (ir->last_bit < 20) {
+ /* ignore spurious codes (caused by light/other remotes) */
+ dprintk("short code: %x\n", ir->code);
+ } else {
+ u32 rc5 = rc5_decode(ir->code);
+
+ /* two start bits? */
+ if (RC5_START(rc5) != 3) {
+ dprintk("rc5 start bits invalid: %u\n", RC5_START(rc5));
+
+ /* right address? */
+ } else if (RC5_ADDR(rc5) == 0x0) {
+ u32 toggle = RC5_TOGGLE(rc5);
+ u32 instr = RC5_INSTR(rc5);
+
+ /* Good code, decide if repeat/repress */
+ if (toggle != RC5_TOGGLE(ir->last_rc5) ||
+ instr != RC5_INSTR(ir->last_rc5)) {
+ dprintk("instruction %x, toggle %x\n", instr,
+ toggle);
+ ir_input_nokey(ir->input, &ir->ir);
+ ir_input_keydown(ir->input, &ir->ir, instr,
+ instr);
+ }
+
+ /* Set/reset key-up timer */
+ timeout = current_jiffies + (500 + rc5_key_timeout
+ * HZ) / 1000;
+ mod_timer(&ir->timer_keyup, timeout);
+
+ /* Save code for repeat test */
+ ir->last_rc5 = rc5;
+ }
+ }
+}
+
+static void ir_rc5_timer_keyup(unsigned long data)
+{
+ struct IR *ir = (struct IR *)data;
+
+ dprintk("key released\n");
+ ir_input_nokey(ir->input, &ir->ir);
+}
+
/* ---------------------------------------------------------------------- */
static int ir_probe(struct device *dev)
@@ -400,6 +642,12 @@
ir->mask_keyup = 0x006000;
ir->polling = 50; // ms
break;
+ case BTTV_BOARD_NEBULA_DIGITV:
+ ir_codes = ir_codes_nebula;
+ driver.any_irq = ir_rc5_irq;
+ driver.gpio_irq = NULL;
+ ir->rc5_gpio = 1;
+ break;
}
if (NULL == ir_codes) {
kfree(ir);
@@ -407,9 +655,17 @@
return -ENODEV;
}
- /* init hardware-specific stuff */
- bttv_gpio_inout(sub->core, ir->mask_keycode | ir->mask_keydown, 0);
- ir->sub = sub;
+ if (ir->rc5_gpio) {
+ u32 gpio;
+ /* enable remote irq */
+ bttv_gpio_inout(sub->core, (1 << 4), 1 << 4);
+ gpio = bttv_gpio_read(sub->core);
+ bttv_gpio_write(sub->core, gpio & ~(1 << 4));
+ bttv_gpio_write(sub->core, gpio | (1 << 4));
+ } else {
+ /* init hardware-specific stuff */
+ bttv_gpio_inout(sub->core, ir->mask_keycode | ir->mask_keydown, 0);
+ }
/* init input device */
snprintf(ir->name, sizeof(ir->name), "bttv IR (card=%d)",
@@ -417,6 +673,7 @@
snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0",
pci_name(sub->core->pci));
+ ir->sub = sub;
ir_input_init(input_dev, &ir->ir, ir_type, ir_codes);
input_dev->name = ir->name;
input_dev->phys = ir->phys;
@@ -437,11 +694,25 @@
ir->timer.function = ir_timer;
ir->timer.data = (unsigned long)ir;
schedule_work(&ir->work);
+ } else if (ir->rc5_gpio) {
+ /* set timer_end for code completion */
+ init_timer(&ir->timer_end);
+ ir->timer_end.function = ir_rc5_timer_end;
+ ir->timer_end.data = (unsigned long)ir;
+
+ init_timer(&ir->timer_keyup);
+ ir->timer_keyup.function = ir_rc5_timer_keyup;
+ ir->timer_keyup.data = (unsigned long)ir;
}
/* all done */
dev_set_drvdata(dev, ir);
input_register_device(ir->input);
+ printk(DEVNAME ": %s detected at %s\n",ir->name,ir->phys);
+
+ /* the remote isn't as bouncy as a keyboard */
+ ir->input->rep[REP_DELAY] = repeat_delay;
+ ir->input->rep[REP_PERIOD] = repeat_period;
return 0;
}
@@ -454,6 +725,15 @@
del_timer(&ir->timer);
flush_scheduled_work();
}
+ if (ir->rc5_gpio) {
+ u32 gpio;
+
+ del_timer(&ir->timer_end);
+ flush_scheduled_work();
+
+ gpio = bttv_gpio_read(ir->sub->core);
+ bttv_gpio_write(ir->sub->core, gpio & ~(1 << 4));
+ }
input_unregister_device(ir->input);
kfree(ir);