mirror of
https://github.com/team-infusion-developers/android_kernel_samsung_msm8976.git
synced 2024-10-04 02:38:54 +00:00
[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>
This commit is contained in:
Mark Weaver
Linus Torvalds
parent
871242b93e
commit
6c6c0b2c27
6 changed files with 317 additions and 6 deletions
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@ -2133,7 +2133,10 @@ struct tvcard bttv_tvcards[] = {
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.tuner_addr = ADDR_UNSET,
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.radio_addr = ADDR_UNSET,
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.has_dvb = 1,
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.has_remote = 1,
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.gpiomask = 0x1b,
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.no_gpioirq = 1,
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.any_irq = 1,
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},
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[BTTV_BOARD_PV143] = {
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/* Jorge Boncompte - DTI2 <jorge@dti2.net> */
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@ -3384,6 +3387,8 @@ void __devinit bttv_init_card2(struct bttv *btv)
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btv->has_remote=1;
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if (!bttv_tvcards[btv->c.type].no_gpioirq)
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btv->gpioirq=1;
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if (bttv_tvcards[btv->c.type].any_irq)
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btv->any_irq = 1;
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if (bttv_tvcards[btv->c.type].audio_hook)
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btv->audio_hook=bttv_tvcards[btv->c.type].audio_hook;
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@ -3667,6 +3667,10 @@ static irqreturn_t bttv_irq(int irq, void *dev_id, struct pt_regs * regs)
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int handled = 0;
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btv=(struct bttv *)dev_id;
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if (btv->any_irq)
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handled = bttv_any_irq(&btv->c);
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count=0;
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while (1) {
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/* get/clear interrupt status bits */
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@ -113,6 +113,24 @@ void bttv_gpio_irq(struct bttv_core *core)
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}
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}
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int bttv_any_irq(struct bttv_core *core)
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{
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struct bttv_sub_driver *drv;
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struct bttv_sub_device *dev;
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struct list_head *item;
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int handled = 0;
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list_for_each(item,&core->subs) {
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dev = list_entry(item,struct bttv_sub_device,list);
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drv = to_bttv_sub_drv(dev->dev.driver);
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if (drv && drv->any_irq) {
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if (drv->any_irq(dev))
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handled = 1;
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}
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}
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return handled;
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}
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/* ----------------------------------------------------------------------- */
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/* external: sub-driver register/unregister */
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@ -235,6 +235,7 @@ struct tvcard
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unsigned int has_dvb:1;
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unsigned int has_remote:1;
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unsigned int no_gpioirq:1;
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unsigned int any_irq:1;
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/* other settings */
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unsigned int pll;
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@ -334,6 +335,7 @@ struct bttv_sub_driver {
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struct device_driver drv;
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char wanted[BUS_ID_SIZE];
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void (*gpio_irq)(struct bttv_sub_device *sub);
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int (*any_irq)(struct bttv_sub_device *sub);
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};
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#define to_bttv_sub_drv(x) container_of((x), struct bttv_sub_driver, drv)
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@ -208,6 +208,7 @@ extern struct bus_type bttv_sub_bus_type;
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int bttv_sub_add_device(struct bttv_core *core, char *name);
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int bttv_sub_del_devices(struct bttv_core *core);
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void bttv_gpio_irq(struct bttv_core *core);
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int bttv_any_irq(struct bttv_core *core);
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/* ---------------------------------------------------------- */
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@ -273,6 +274,7 @@ struct bttv {
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struct bttv_pll_info pll;
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int triton1;
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int gpioirq;
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int any_irq;
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int use_i2c_hw;
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/* old gpio interface */
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@ -221,24 +221,99 @@ static IR_KEYTAB_TYPE ir_codes_conceptronic[IR_KEYTAB_SIZE] = {
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[ 24 ] = KEY_MUTE // mute/unmute
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};
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static IR_KEYTAB_TYPE ir_codes_nebula[IR_KEYTAB_SIZE] = {
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[0x00] = KEY_KP0,
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[0x01] = KEY_KP1,
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[0x02] = KEY_KP2,
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[0x03] = KEY_KP3,
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[0x04] = KEY_KP4,
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[0x05] = KEY_KP5,
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[0x06] = KEY_KP6,
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[0x07] = KEY_KP7,
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[0x08] = KEY_KP8,
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[0x09] = KEY_KP9,
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[0x0a] = KEY_TV,
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[0x0b] = KEY_AUX,
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[0x0c] = KEY_DVD,
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[0x0d] = KEY_POWER,
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[0x0e] = KEY_MHP, /* labelled 'Picture' */
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[0x0f] = KEY_AUDIO,
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[0x10] = KEY_INFO,
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[0x11] = KEY_F13, /* 16:9 */
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[0x12] = KEY_F14, /* 14:9 */
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[0x13] = KEY_EPG,
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[0x14] = KEY_EXIT,
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[0x15] = KEY_MENU,
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[0x16] = KEY_UP,
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[0x17] = KEY_DOWN,
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[0x18] = KEY_LEFT,
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[0x19] = KEY_RIGHT,
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[0x1a] = KEY_ENTER,
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[0x1b] = KEY_CHANNELUP,
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[0x1c] = KEY_CHANNELDOWN,
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[0x1d] = KEY_VOLUMEUP,
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[0x1e] = KEY_VOLUMEDOWN,
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[0x1f] = KEY_RED,
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[0x20] = KEY_GREEN,
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[0x21] = KEY_YELLOW,
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[0x22] = KEY_BLUE,
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[0x23] = KEY_SUBTITLE,
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[0x24] = KEY_F15, /* AD */
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[0x25] = KEY_TEXT,
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[0x26] = KEY_MUTE,
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[0x27] = KEY_REWIND,
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[0x28] = KEY_STOP,
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[0x29] = KEY_PLAY,
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[0x2a] = KEY_FASTFORWARD,
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[0x2b] = KEY_F16, /* chapter */
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[0x2c] = KEY_PAUSE,
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[0x2d] = KEY_PLAY,
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[0x2e] = KEY_RECORD,
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[0x2f] = KEY_F17, /* picture in picture */
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[0x30] = KEY_KPPLUS, /* zoom in */
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[0x31] = KEY_KPMINUS, /* zoom out */
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[0x32] = KEY_F18, /* capture */
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[0x33] = KEY_F19, /* web */
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[0x34] = KEY_EMAIL,
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[0x35] = KEY_PHONE,
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[0x36] = KEY_PC
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};
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struct IR {
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struct bttv_sub_device *sub;
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struct input_dev *input;
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struct ir_input_state ir;
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char name[32];
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char phys[32];
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/* Usual gpio signalling */
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u32 mask_keycode;
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u32 mask_keydown;
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u32 mask_keyup;
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int polling;
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u32 polling;
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u32 last_gpio;
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struct work_struct work;
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struct timer_list timer;
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/* RC5 gpio */
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u32 rc5_gpio;
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struct timer_list timer_end; /* timer_end for code completion */
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struct timer_list timer_keyup; /* timer_end for key release */
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u32 last_rc5; /* last good rc5 code */
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u32 last_bit; /* last raw bit seen */
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u32 code; /* raw code under construction */
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struct timeval base_time; /* time of last seen code */
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int active; /* building raw code */
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};
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static int debug;
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module_param(debug, int, 0644); /* debug level (0,1,2) */
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static int repeat_delay = 500;
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module_param(repeat_delay, int, 0644);
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static int repeat_period = 33;
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module_param(repeat_period, int, 0644);
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#define DEVNAME "ir-kbd-gpio"
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#define dprintk(fmt, arg...) if (debug) \
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@ -254,7 +329,7 @@ static struct bttv_sub_driver driver = {
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.probe = ir_probe,
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.remove = ir_remove,
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},
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.gpio_irq = ir_irq,
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.gpio_irq = ir_irq,
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};
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/* ---------------------------------------------------------------------- */
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@ -327,6 +402,173 @@ static void ir_work(void *data)
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mod_timer(&ir->timer, timeout);
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}
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/* ---------------------------------------------------------------*/
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static int rc5_remote_gap = 885;
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module_param(rc5_remote_gap, int, 0644);
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static int rc5_key_timeout = 200;
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module_param(rc5_key_timeout, int, 0644);
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#define RC5_START(x) (((x)>>12)&3)
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#define RC5_TOGGLE(x) (((x)>>11)&1)
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#define RC5_ADDR(x) (((x)>>6)&31)
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#define RC5_INSTR(x) ((x)&63)
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/* decode raw bit pattern to RC5 code */
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static u32 rc5_decode(unsigned int code)
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{
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unsigned int org_code = code;
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unsigned int pair;
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unsigned int rc5 = 0;
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int i;
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code = (code << 1) | 1;
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for (i = 0; i < 14; ++i) {
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pair = code & 0x3;
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code >>= 2;
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rc5 <<= 1;
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switch (pair) {
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case 0:
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case 2:
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break;
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case 1:
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rc5 |= 1;
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break;
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case 3:
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dprintk("bad code: %x\n", org_code);
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return 0;
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}
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}
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dprintk("code=%x, rc5=%x, start=%x, toggle=%x, address=%x, "
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"instr=%x\n", rc5, org_code, RC5_START(rc5),
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RC5_TOGGLE(rc5), RC5_ADDR(rc5), RC5_INSTR(rc5));
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return rc5;
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}
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static int ir_rc5_irq(struct bttv_sub_device *sub)
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{
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struct IR *ir = dev_get_drvdata(&sub->dev);
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struct timeval tv;
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u32 gpio;
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u32 gap;
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unsigned long current_jiffies, timeout;
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/* read gpio port */
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gpio = bttv_gpio_read(ir->sub->core);
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/* remote IRQ? */
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if (!(gpio & 0x20))
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return 0;
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/* get time of bit */
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current_jiffies = jiffies;
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do_gettimeofday(&tv);
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/* avoid overflow with gap >1s */
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if (tv.tv_sec - ir->base_time.tv_sec > 1) {
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gap = 200000;
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} else {
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gap = 1000000 * (tv.tv_sec - ir->base_time.tv_sec) +
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tv.tv_usec - ir->base_time.tv_usec;
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}
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/* active code => add bit */
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if (ir->active) {
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/* only if in the code (otherwise spurious IRQ or timer
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late) */
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if (ir->last_bit < 28) {
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ir->last_bit = (gap - rc5_remote_gap / 2) /
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rc5_remote_gap;
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ir->code |= 1 << ir->last_bit;
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}
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/* starting new code */
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} else {
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ir->active = 1;
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ir->code = 0;
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ir->base_time = tv;
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ir->last_bit = 0;
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timeout = current_jiffies + (500 + 30 * HZ) / 1000;
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mod_timer(&ir->timer_end, timeout);
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}
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/* toggle GPIO pin 4 to reset the irq */
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bttv_gpio_write(ir->sub->core, gpio & ~(1 << 4));
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bttv_gpio_write(ir->sub->core, gpio | (1 << 4));
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return 1;
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}
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static void ir_rc5_timer_end(unsigned long data)
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{
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struct IR *ir = (struct IR *)data;
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struct timeval tv;
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unsigned long current_jiffies, timeout;
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u32 gap;
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/* get time */
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current_jiffies = jiffies;
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do_gettimeofday(&tv);
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/* avoid overflow with gap >1s */
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if (tv.tv_sec - ir->base_time.tv_sec > 1) {
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gap = 200000;
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} else {
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gap = 1000000 * (tv.tv_sec - ir->base_time.tv_sec) +
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tv.tv_usec - ir->base_time.tv_usec;
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}
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/* Allow some timmer jitter (RC5 is ~24ms anyway so this is ok) */
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if (gap < 28000) {
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dprintk("spurious timer_end\n");
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return;
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}
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ir->active = 0;
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if (ir->last_bit < 20) {
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/* ignore spurious codes (caused by light/other remotes) */
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dprintk("short code: %x\n", ir->code);
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} else {
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u32 rc5 = rc5_decode(ir->code);
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/* two start bits? */
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if (RC5_START(rc5) != 3) {
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dprintk("rc5 start bits invalid: %u\n", RC5_START(rc5));
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/* right address? */
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} else if (RC5_ADDR(rc5) == 0x0) {
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u32 toggle = RC5_TOGGLE(rc5);
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u32 instr = RC5_INSTR(rc5);
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/* Good code, decide if repeat/repress */
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if (toggle != RC5_TOGGLE(ir->last_rc5) ||
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instr != RC5_INSTR(ir->last_rc5)) {
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dprintk("instruction %x, toggle %x\n", instr,
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toggle);
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ir_input_nokey(ir->input, &ir->ir);
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ir_input_keydown(ir->input, &ir->ir, instr,
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instr);
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}
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/* Set/reset key-up timer */
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timeout = current_jiffies + (500 + rc5_key_timeout
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* HZ) / 1000;
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mod_timer(&ir->timer_keyup, timeout);
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/* Save code for repeat test */
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ir->last_rc5 = rc5;
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}
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}
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}
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static void ir_rc5_timer_keyup(unsigned long data)
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{
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struct IR *ir = (struct IR *)data;
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dprintk("key released\n");
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ir_input_nokey(ir->input, &ir->ir);
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}
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/* ---------------------------------------------------------------------- */
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static int ir_probe(struct device *dev)
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@ -400,6 +642,12 @@ static int ir_probe(struct device *dev)
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ir->mask_keyup = 0x006000;
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ir->polling = 50; // ms
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break;
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case BTTV_BOARD_NEBULA_DIGITV:
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ir_codes = ir_codes_nebula;
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driver.any_irq = ir_rc5_irq;
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driver.gpio_irq = NULL;
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ir->rc5_gpio = 1;
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break;
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}
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if (NULL == ir_codes) {
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kfree(ir);
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@ -407,9 +655,17 @@ static int ir_probe(struct device *dev)
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return -ENODEV;
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}
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/* init hardware-specific stuff */
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bttv_gpio_inout(sub->core, ir->mask_keycode | ir->mask_keydown, 0);
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ir->sub = sub;
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if (ir->rc5_gpio) {
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u32 gpio;
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/* enable remote irq */
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bttv_gpio_inout(sub->core, (1 << 4), 1 << 4);
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gpio = bttv_gpio_read(sub->core);
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bttv_gpio_write(sub->core, gpio & ~(1 << 4));
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bttv_gpio_write(sub->core, gpio | (1 << 4));
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} else {
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/* init hardware-specific stuff */
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bttv_gpio_inout(sub->core, ir->mask_keycode | ir->mask_keydown, 0);
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}
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/* init input device */
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snprintf(ir->name, sizeof(ir->name), "bttv IR (card=%d)",
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@ -417,6 +673,7 @@ static int ir_probe(struct device *dev)
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snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0",
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pci_name(sub->core->pci));
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ir->sub = sub;
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ir_input_init(input_dev, &ir->ir, ir_type, ir_codes);
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input_dev->name = ir->name;
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input_dev->phys = ir->phys;
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@ -437,11 +694,25 @@ static int ir_probe(struct device *dev)
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ir->timer.function = ir_timer;
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ir->timer.data = (unsigned long)ir;
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schedule_work(&ir->work);
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} else if (ir->rc5_gpio) {
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/* set timer_end for code completion */
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init_timer(&ir->timer_end);
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ir->timer_end.function = ir_rc5_timer_end;
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ir->timer_end.data = (unsigned long)ir;
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init_timer(&ir->timer_keyup);
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ir->timer_keyup.function = ir_rc5_timer_keyup;
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ir->timer_keyup.data = (unsigned long)ir;
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}
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/* all done */
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dev_set_drvdata(dev, ir);
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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 @@ static int ir_remove(struct device *dev)
|
|||
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);
|
||||
|
|
|
|||
Loading…
Reference in a new issue