SAA7134: GPIO IRQ improvements

From: Peter Missel <peter.missel@onlinehome.de>

saa7134-core.c saa7134_irq(): Separate GPIO16 and GPIO18 handling. Call
IR-remote-GPIO handler only if the GPIO IRQ is "owned" by it. Added
infrastructure to branch out to a future I2C-IR IRQ handler.

saa7134-core.c saa7134_hwinit2(): Enable only the one GPIO pin and edge to
trigger an IRQ that is wired as keyup/keydown mask. IRQ will only be
generated for an actual key-down event.

saa7134-input.c flyvideo_codes[]: Replace numpad keys with normal ones. Put
meaning to mystery keys. Change some key definitions to have their functions
match their labels better. Fix typos.

saa7134-input.c flydvb_codes[]: Added new table for the larger remote that
comes with the LifeView FlyDVB series.

saa7134-input.c build_key(): In IRQ mode, signal key-down and then key-up
straight in one go.

Signed-off-by: Ricardo Cerqueira <v4l@cerqueira.org>

1 files changed, 49 insertions, 15 deletions

diff --git a/linux/drivers/media/video/saa7134/saa7134-core.c b/linux/drivers/media/video/saa7134/saa7134-core.c
index ad55775a1..90a80a25e 100644
--- a/linux/drivers/media/video/saa7134/saa7134-core.c
+++ b/linux/drivers/media/video/saa7134/saa7134-core.c
@@ -1,5 +1,5 @@
 /*
- * $Id: saa7134-core.c,v 1.60 2006/01/01 17:17:39 mchehab Exp $
+ * $Id: saa7134-core.c,v 1.61 2006/01/08 01:20:04 rmcc Exp $
  *
  * device driver for philips saa7134 based TV cards
  * driver core
@@ -606,11 +606,38 @@ static irqreturn_t saa7134_irq(int irq, void *dev_id, struct pt_regs *regs)
 		    card_has_mpeg(dev))
 			saa7134_irq_ts_done(dev,status);
 
-		if ((report & (SAA7134_IRQ_REPORT_GPIO16 |
-			       SAA7134_IRQ_REPORT_GPIO18)) &&
-		    dev->remote)
-			saa7134_input_irq(dev);
+		if (report & SAA7134_IRQ_REPORT_GPIO16) {
+			switch (dev->has_remote) {
+				case SAA7134_REMOTE_GPIO:
+					if  (dev->remote->mask_keydown & 0x10000) {
+						saa7134_input_irq(dev);
+					}
+					break;
 
+				case SAA7134_REMOTE_I2C:
+					break;			/* FIXME: invoke I2C get_key() */
+
+				default:			/* GPIO16 not used by IR remote */
+					break;
+			}
+		}
+
+		if (report & SAA7134_IRQ_REPORT_GPIO18) {
+			switch (dev->has_remote) {
+				case SAA7134_REMOTE_GPIO:
+					if ((dev->remote->mask_keydown & 0x40000) ||
+					    (dev->remote->mask_keyup & 0x40000)) {
+						saa7134_input_irq(dev);
+					}
+					break;
+
+				case SAA7134_REMOTE_I2C:
+					break;			/* FIXME: invoke I2C get_key() */
+
+				default:			/* GPIO18 not used by IR remote */
+					break;
+			}
+		}
 	}
 
 	if (10 == loop) {
@@ -620,13 +647,16 @@ static irqreturn_t saa7134_irq(int irq, void *dev_id, struct pt_regs *regs)
 			printk(KERN_WARNING "%s/irq: looping -- "
 			       "clearing PE (parity error!) enable bit\n",dev->name);
 			saa_clearl(SAA7134_IRQ2,SAA7134_IRQ2_INTE_PE);
-		} else if (report & (SAA7134_IRQ_REPORT_GPIO16 |
-				     SAA7134_IRQ_REPORT_GPIO18)) {
-			/* disable gpio IRQs */
+		} else if (report & SAA7134_IRQ_REPORT_GPIO16) {
+			/* disable gpio16 IRQ */
+			printk(KERN_WARNING "%s/irq: looping -- "
+			       "clearing GPIO16 enable bit\n",dev->name);
+			saa_clearl(SAA7134_IRQ2, SAA7134_IRQ2_INTE_GPIO16);
+		} else if (report & SAA7134_IRQ_REPORT_GPIO18) {
+			/* disable gpio18 IRQs */
 			printk(KERN_WARNING "%s/irq: looping -- "
-			       "clearing GPIO enable bits\n",dev->name);
-			saa_clearl(SAA7134_IRQ2, (SAA7134_IRQ2_INTE_GPIO16 |
-						  SAA7134_IRQ2_INTE_GPIO18));
+			       "clearing GPIO18 enable bit\n",dev->name);
+			saa_clearl(SAA7134_IRQ2, SAA7134_IRQ2_INTE_GPIO18);
 		} else {
 			/* disable all irqs */
 			printk(KERN_WARNING "%s/irq: looping -- "
@@ -707,10 +737,14 @@ static int saa7134_hwinit2(struct saa7134_dev *dev)
 		SAA7134_IRQ2_INTE_PE      |
 		SAA7134_IRQ2_INTE_AR;
 
-	if (dev->has_remote == SAA7134_REMOTE_GPIO)
-		irq2_mask |= (SAA7134_IRQ2_INTE_GPIO18  |
-			      SAA7134_IRQ2_INTE_GPIO18A |
-			      SAA7134_IRQ2_INTE_GPIO16  );
+	if (dev->has_remote == SAA7134_REMOTE_GPIO) {
+		if (dev->remote->mask_keydown & 0x10000)
+			irq2_mask |= SAA7134_IRQ2_INTE_GPIO16;
+		else if (dev->remote->mask_keydown & 0x40000)
+			irq2_mask |= SAA7134_IRQ2_INTE_GPIO18;
+		else if (dev->remote->mask_keyup & 0x40000)
+			irq2_mask |= SAA7134_IRQ2_INTE_GPIO18A;
+	}
 
 	saa_writel(SAA7134_IRQ1, 0);
 	saa_writel(SAA7134_IRQ2, irq2_mask);