V4L/DVB: saa7134: add code to allow changing IR protocol

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/video/saa7134/saa7134-input.c b/drivers/media/video/saa7134/saa7134-input.c
index 241195e..7e6f125 100644 (file)
--- a/drivers/media/video/saa7134/saa7134-input.c
+++ b/drivers/media/video/saa7134/saa7134-input.c
@@ -421,6 +421,10 @@ static void saa7134_input_timer(unsigned long data)
 
 void saa7134_ir_start(struct saa7134_dev *dev, struct card_ir *ir)
 {
+       if (ir->running)
+               return;
+
+       ir->running = 1;
        if (ir->polling) {
                setup_timer(&ir->timer, saa7134_input_timer,
                            (unsigned long)dev);
@@ -448,8 +452,50 @@ void saa7134_ir_start(struct saa7134_dev *dev, struct card_ir *ir)
 
 void saa7134_ir_stop(struct saa7134_dev *dev)
 {
+       struct card_ir *ir = dev->remote;
+
+       if (!ir->running)
+               return;
        if (dev->remote->polling)
                del_timer_sync(&dev->remote->timer);
+       else if (ir->rc5_gpio)
+               del_timer_sync(&ir->timer_end);
+       else if (ir->nec_gpio)
+               tasklet_kill(&ir->tlet);
+       ir->running = 0;
+}
+
+int saa7134_ir_change_protocol(void *priv, u64 ir_type)
+{
+       struct saa7134_dev *dev = priv;
+       struct card_ir *ir = dev->remote;
+       u32 nec_gpio, rc5_gpio;
+
+       if (ir_type == IR_TYPE_RC5) {
+               dprintk("Changing protocol to RC5\n");
+               nec_gpio = 0;
+               rc5_gpio = 1;
+       } else if (ir_type == IR_TYPE_NEC) {
+               dprintk("Changing protocol to NEC\n");
+               nec_gpio = 1;
+               rc5_gpio = 0;
+       } else {
+               dprintk("IR protocol type %ud is not supported\n",
+                       (unsigned)ir_type);
+               return -EINVAL;
+       }
+
+       if (ir->running) {
+               saa7134_ir_stop(dev);
+               ir->nec_gpio = nec_gpio;
+               ir->rc5_gpio = rc5_gpio;
+               saa7134_ir_start(dev, ir);
+       } else {
+               ir->nec_gpio = nec_gpio;
+               ir->rc5_gpio = rc5_gpio;
+       }
+
+       return 0;
 }
 
 int saa7134_input_init1(struct saa7134_dev *dev)
@@ -698,6 +744,9 @@ int saa7134_input_init1(struct saa7134_dev *dev)
        }
 
        ir->dev = input_dev;
+       dev->remote = ir;
+
+       ir->running = 0;
 
        /* init hardware-specific stuff */
        ir->mask_keycode = mask_keycode;
@@ -713,6 +762,14 @@ int saa7134_input_init1(struct saa7134_dev *dev)
        snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0",
                 pci_name(dev->pci));
 
+       if (ir_codes->ir_type != IR_TYPE_OTHER) {
+               ir->props.allowed_protos = IR_TYPE_RC5 | IR_TYPE_NEC;
+               ir->props.priv = dev;
+               ir->props.change_protocol = saa7134_ir_change_protocol;
+
+               /* Set IR protocol */
+               saa7134_ir_change_protocol(ir->props.priv, ir_codes->ir_type);
+       }
        err = ir_input_init(input_dev, &ir->ir, ir_type);
        if (err < 0)
                goto err_out_free;
@@ -730,13 +787,12 @@ int saa7134_input_init1(struct saa7134_dev *dev)
        }
        input_dev->dev.parent = &dev->pci->dev;
 
-       dev->remote = ir;
-       saa7134_ir_start(dev, ir);
-
-       err = ir_input_register(ir->dev, ir_codes, NULL, MODULE_NAME);
+       err = ir_input_register(ir->dev, ir_codes, &ir->props, MODULE_NAME);
        if (err)
                goto err_out_stop;
 
+       saa7134_ir_start(dev, ir);
+
        /* the remote isn't as bouncy as a keyboard */
        ir->dev->rep[REP_DELAY] = repeat_delay;
        ir->dev->rep[REP_PERIOD] = repeat_period;

diff --git a/include/media/ir-common.h b/include/media/ir-common.h
index c30b283..41469b7 100644 (file)
--- a/include/media/ir-common.h
+++ b/include/media/ir-common.h
@@ -51,6 +51,9 @@ struct card_ir {
        char                    name[32];
        char                    phys[32];
 
+       u32                     running:1;
+       struct ir_dev_props     props;
+
        /* Usual gpio signalling */
 
        u32                     mask_keycode;