merge: http://linuxtv.org/hg/~awalls/cx18-av-core

From: Mauro Carvalho Chehab <mchehab@redhat.com>

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

1 files changed, 82 insertions, 0 deletions

diff --git a/linux/drivers/media/video/cx23885/cx23885-core.c b/linux/drivers/media/video/cx23885/cx23885-core.c
index 48f777b99..6988361c9 100644
--- a/linux/drivers/media/video/cx23885/cx23885-core.c
+++ b/linux/drivers/media/video/cx23885/cx23885-core.c
@@ -1744,6 +1744,88 @@ out:
 	return IRQ_RETVAL(handled);
 }
 
+static inline int encoder_on_portb(struct cx23885_dev *dev)
+{
+	return cx23885_boards[dev->board].portb == CX23885_MPEG_ENCODER;
+}
+
+static inline int encoder_on_portc(struct cx23885_dev *dev)
+{
+	return cx23885_boards[dev->board].portc == CX23885_MPEG_ENCODER;
+}
+
+/* Mask represents 32 different GPIOs, GPIO's are split into multiple
+ * registers depending on the board configuration (and whether the
+ * 417 encoder (wi it's own GPIO's) are present. Each GPIO bit will
+ * be pushed into the correct hardware register, regardless of the
+ * physical location. Certain registers are shared so we sanity check
+ * and report errors if we think we're tampering with a GPIo that might
+ * be assigned to the encoder (and used for the host bus).
+ *
+ * GPIO  2 thru  0 - On the cx23885 bridge
+ * GPIO 18 thru  3 - On the cx23417 host bus interface
+ * GPIO 23 thru 19 - On the cx25840 a/v core
+ */
+void cx23885_gpio_set(struct cx23885_dev *dev, u32 mask)
+{
+	if (mask & 0x7)
+		cx_set(GP0_IO, mask & 0x7);
+
+	if (mask & 0x0007fff8) {
+		if (encoder_on_portb(dev) || encoder_on_portc(dev))
+			printk(KERN_ERR
+				"%s: Setting GPIO on encoder ports\n",
+				dev->name);
+		cx_set(MC417_RWD, (mask & 0x0007fff8) >> 3);
+	}
+
+	/* TODO: 23-19 */
+	if (mask & 0x00f80000)
+		printk(KERN_INFO "%s: Unsupported\n", dev->name);
+}
+
+void cx23885_gpio_clear(struct cx23885_dev *dev, u32 mask)
+{
+	if (mask & 0x00000007)
+		cx_clear(GP0_IO, mask & 0x7);
+
+	if (mask & 0x0007fff8) {
+		if (encoder_on_portb(dev) || encoder_on_portc(dev))
+			printk(KERN_ERR
+				"%s: Clearing GPIO moving on encoder ports\n",
+				dev->name);
+		cx_clear(MC417_RWD, (mask & 0x7fff8) >> 3);
+	}
+
+	/* TODO: 23-19 */
+	if (mask & 0x00f80000)
+		printk(KERN_INFO "%s: Unsupported\n", dev->name);
+}
+
+void cx23885_gpio_enable(struct cx23885_dev *dev, u32 mask, int asoutput)
+{
+	if ((mask & 0x00000007) && asoutput)
+		cx_set(GP0_IO, (mask & 0x7) << 16);
+	else if ((mask & 0x00000007) && !asoutput)
+		cx_clear(GP0_IO, (mask & 0x7) << 16);
+
+	if (mask & 0x0007fff8) {
+		if (encoder_on_portb(dev) || encoder_on_portc(dev))
+			printk(KERN_ERR
+				"%s: Enabling GPIO on encoder ports\n",
+				dev->name);
+	}
+
+	/* MC417_OEN is active low for output, write 1 for an input */
+	if ((mask & 0x0007fff8) && asoutput)
+		cx_clear(MC417_OEN, (mask & 0x7fff8) >> 3);
+
+	else if ((mask & 0x0007fff8) && !asoutput)
+		cx_set(MC417_OEN, (mask & 0x7fff8) >> 3);
+
+	/* TODO: 23-19 */
+}
+
 static int __devinit cx23885_initdev(struct pci_dev *pci_dev,
 				     const struct pci_device_id *pci_id)
 {