--- /dev/null
+/*
+ *
+ * Copyright (c) 2003 Gerd Knorr
+ * Copyright (c) 2003 Pavel Machek
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/input.h>
+
+#include "bttv.h"
+#include "bttvp.h"
+
+
+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 "bttv-input"
+
+/* ---------------------------------------------------------------------- */
+
+static void ir_handle_key(struct bttv *btv)
+{
+ struct bttv_ir *ir = btv->remote;
+ u32 gpio,data;
+
+ /* read gpio value */
+ gpio = bttv_gpio_read(&btv->c);
+ if (ir->polling) {
+ if (ir->last_gpio == gpio)
+ return;
+ ir->last_gpio = gpio;
+ }
+
+ /* extract data */
+ data = ir_extract_bits(gpio, ir->mask_keycode);
+ dprintk(KERN_INFO DEVNAME ": irq gpio=0x%x code=%d | %s%s%s\n",
+ gpio, data,
+ ir->polling ? "poll" : "irq",
+ (gpio & ir->mask_keydown) ? " down" : "",
+ (gpio & ir->mask_keyup) ? " up" : "");
+
+ if ((ir->mask_keydown && (0 != (gpio & ir->mask_keydown))) ||
+ (ir->mask_keyup && (0 == (gpio & ir->mask_keyup)))) {
+ ir_input_keydown(ir->dev,&ir->ir,data,data);
+ } else {
+ ir_input_nokey(ir->dev,&ir->ir);
+ }
+
+}
+
+void bttv_input_irq(struct bttv *btv)
+{
+ struct bttv_ir *ir = btv->remote;
+
+ if (!ir->polling)
+ ir_handle_key(btv);
+}
+
+static void bttv_input_timer(unsigned long data)
+{
+ struct bttv *btv = (struct bttv*)data;
+ struct bttv_ir *ir = btv->remote;
+ unsigned long timeout;
+
+ ir_handle_key(btv);
+ timeout = jiffies + (ir->polling * HZ / 1000);
+ 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(KERN_WARNING "bad code: %x\n", org_code);
+ return 0;
+ }
+ }
+ dprintk(KERN_WARNING "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 bttv_rc5_irq(struct bttv *btv)
+{
+ struct bttv_ir *ir = btv->remote;
+ struct timeval tv;
+ u32 gpio;
+ u32 gap;
+ unsigned long current_jiffies, timeout;
+
+ /* read gpio port */
+ gpio = bttv_gpio_read(&btv->c);
+
+ /* 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(&btv->c, gpio & ~(1 << 4));
+ bttv_gpio_write(&btv->c, gpio | (1 << 4));
+ return 1;
+}
+
+
+static void bttv_rc5_timer_end(unsigned long data)
+{
+ struct bttv_ir *ir = (struct bttv_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(KERN_WARNING "spurious timer_end\n");
+ return;
+ }
+
+ ir->active = 0;
+ if (ir->last_bit < 20) {
+ /* ignore spurious codes (caused by light/other remotes) */
+ dprintk(KERN_WARNING "short code: %x\n", ir->code);
+ } else {
+ u32 rc5 = rc5_decode(ir->code);
+
+ /* two start bits? */
+ if (RC5_START(rc5) != 3) {
+ dprintk(KERN_WARNING "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(KERN_WARNING "instruction %x, toggle %x\n", instr,
+ toggle);
+ ir_input_nokey(ir->dev, &ir->ir);
+ ir_input_keydown(ir->dev, &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 bttv_rc5_timer_keyup(unsigned long data)
+{
+ struct bttv_ir *ir = (struct bttv_ir *)data;
+
+ dprintk(KERN_DEBUG "key released\n");
+ ir_input_nokey(ir->dev, &ir->ir);
+}
+
+/* ---------------------------------------------------------------------- */
+
+int bttv_input_init(struct bttv *btv)
+{
+ struct bttv_ir *ir;
+ IR_KEYTAB_TYPE *ir_codes = NULL;
+ struct input_dev *input_dev;
+ int ir_type = IR_TYPE_OTHER;
+
+ if (!btv->has_remote)
+ return -ENODEV;
+
+ ir = kzalloc(sizeof(*ir),GFP_KERNEL);
+ input_dev = input_allocate_device();
+ if (!ir || !input_dev) {
+ kfree(ir);
+ input_free_device(input_dev);
+ return -ENOMEM;
+ }
+ memset(ir,0,sizeof(*ir));
+
+ /* detect & configure */
+ switch (btv->c.type) {
+ case BTTV_BOARD_AVERMEDIA:
+ case BTTV_BOARD_AVPHONE98:
+ case BTTV_BOARD_AVERMEDIA98:
+ ir_codes = ir_codes_avermedia;
+ ir->mask_keycode = 0xf88000;
+ ir->mask_keydown = 0x010000;
+ ir->polling = 50; // ms
+ break;
+
+ case BTTV_BOARD_AVDVBT_761:
+ case BTTV_BOARD_AVDVBT_771:
+ ir_codes = ir_codes_avermedia_dvbt;
+ ir->mask_keycode = 0x0f00c0;
+ ir->mask_keydown = 0x000020;
+ ir->polling = 50; // ms
+ break;
+
+ case BTTV_BOARD_PXELVWPLTVPAK:
+ ir_codes = ir_codes_pixelview;
+ ir->mask_keycode = 0x003e00;
+ ir->mask_keyup = 0x010000;
+ ir->polling = 50; // ms
+ break;
+ case BTTV_BOARD_PV_BT878P_9B:
+ case BTTV_BOARD_PV_BT878P_PLUS:
+ ir_codes = ir_codes_pixelview;
+ ir->mask_keycode = 0x001f00;
+ ir->mask_keyup = 0x008000;
+ ir->polling = 50; // ms
+ break;
+
+ case BTTV_BOARD_WINFAST2000:
+ ir_codes = ir_codes_winfast;
+ ir->mask_keycode = 0x1f8;
+ break;
+ case BTTV_BOARD_MAGICTVIEW061:
+ case BTTV_BOARD_MAGICTVIEW063:
+ ir_codes = ir_codes_winfast;
+ ir->mask_keycode = 0x0008e000;
+ ir->mask_keydown = 0x00200000;
+ break;
+ case BTTV_BOARD_APAC_VIEWCOMP:
+ ir_codes = ir_codes_apac_viewcomp;
+ ir->mask_keycode = 0x001f00;
+ ir->mask_keyup = 0x008000;
+ ir->polling = 50; // ms
+ break;
+ case BTTV_BOARD_CONCEPTRONIC_CTVFMI2:
+ case BTTV_BOARD_CONTVFMI:
+ ir_codes = ir_codes_pixelview;
+ ir->mask_keycode = 0x001F00;
+ ir->mask_keyup = 0x006000;
+ ir->polling = 50; // ms
+ break;
+ case BTTV_BOARD_NEBULA_DIGITV:
+ ir_codes = ir_codes_nebula;
+ btv->custom_irq = bttv_rc5_irq;
+ ir->rc5_gpio = 1;
+ break;
+ case BTTV_BOARD_MACHTV_MAGICTV:
+ ir_codes = ir_codes_apac_viewcomp;
+ ir->mask_keycode = 0x001F00;
+ ir->mask_keyup = 0x004000;
+ ir->polling = 50; /* ms */
+ break;
+ }
+ if (NULL == ir_codes) {
+ dprintk(KERN_INFO "Ooops: IR config error [card=%d]\n",btv->c.type);
+ kfree(ir);
+ input_free_device(input_dev);
+ return -ENODEV;
+ }
+
+ if (ir->rc5_gpio) {
+ u32 gpio;
+ /* enable remote irq */
+ bttv_gpio_inout(&btv->c, (1 << 4), 1 << 4);
+ gpio = bttv_gpio_read(&btv->c);
+ bttv_gpio_write(&btv->c, gpio & ~(1 << 4));
+ bttv_gpio_write(&btv->c, gpio | (1 << 4));
+ } else {
+ /* init hardware-specific stuff */
+ bttv_gpio_inout(&btv->c, ir->mask_keycode | ir->mask_keydown, 0);
+ }
+
+ /* init input device */
+ ir->dev = input_dev;
+
+ snprintf(ir->name, sizeof(ir->name), "bttv IR (card=%d)",
+ btv->c.type);
+ snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0",
+ pci_name(btv->c.pci));
+
+ ir_input_init(input_dev, &ir->ir, ir_type, ir_codes);
+ input_dev->name = ir->name;
+ input_dev->phys = ir->phys;
+ input_dev->id.bustype = BUS_PCI;
+ input_dev->id.version = 1;
+ if (btv->c.pci->subsystem_vendor) {
+ input_dev->id.vendor = btv->c.pci->subsystem_vendor;
+ input_dev->id.product = btv->c.pci->subsystem_device;
+ } else {
+ input_dev->id.vendor = btv->c.pci->vendor;
+ input_dev->id.product = btv->c.pci->device;
+ }
+ input_dev->cdev.dev = &btv->c.pci->dev;
+
+ btv->remote = ir;
+ if (ir->polling) {
+ init_timer(&ir->timer);
+ ir->timer.function = bttv_input_timer;
+ ir->timer.data = (unsigned long)btv;
+ ir->timer.expires = jiffies + HZ;
+ add_timer(&ir->timer);
+ } else if (ir->rc5_gpio) {
+ /* set timer_end for code completion */
+ init_timer(&ir->timer_end);
+ ir->timer_end.function = bttv_rc5_timer_end;
+ ir->timer_end.data = (unsigned long)ir;
+
+ init_timer(&ir->timer_keyup);
+ ir->timer_keyup.function = bttv_rc5_timer_keyup;
+ ir->timer_keyup.data = (unsigned long)ir;
+ }
+
+ /* all done */
+ input_register_device(btv->remote->dev);
+ printk(DEVNAME ": %s detected at %s\n",ir->name,ir->phys);
+
+ /* the remote isn't as bouncy as a keyboard */
+ ir->dev->rep[REP_DELAY] = repeat_delay;
+ ir->dev->rep[REP_PERIOD] = repeat_period;
+
+ return 0;
+}
+
+void bttv_input_fini(struct bttv *btv)
+{
+ if (btv->remote == NULL)
+ return;
+
+ if (btv->remote->polling) {
+ del_timer_sync(&btv->remote->timer);
+ flush_scheduled_work();
+ }
+
+
+ if (btv->remote->rc5_gpio) {
+ u32 gpio;
+
+ del_timer_sync(&btv->remote->timer_end);
+ flush_scheduled_work();
+
+ gpio = bttv_gpio_read(&btv->c);
+ bttv_gpio_write(&btv->c, gpio & ~(1 << 4));
+ }
+
+ input_unregister_device(btv->remote->dev);
+ kfree(btv->remote);
+ btv->remote = NULL;
+}
+
+
+/*
+ * Local variables:
+ * c-basic-offset: 8
+ * End:
+ */
git://git.onelab.eu / linux-2.6.git / blobdiff