V4L/DVB (7003): cx23885: Add support for device revision detection
Each version of the cx23885/7/8 silicon has different build revs.
We'll use this internal revision to work around bugs and known
issues in the video and encoder related patches.
Signed-off-by: Steven Toth <stoth@hauppauge.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/video/cx23885/cx23885-core.c b/drivers/media/video/cx23885/cx23885-core.c
index f205ad6..a602ac8 100644
--- a/drivers/media/video/cx23885/cx23885-core.c
+++ b/drivers/media/video/cx23885/cx23885-core.c
@@ -702,6 +702,44 @@
return 0;
}
+static void cx23885_dev_checkrevision(struct cx23885_dev *dev)
+{
+ switch (cx_read(RDR_CFG2) & 0xff) {
+ case 0x00:
+ /* cx23885 */
+ dev->hwrevision = 0xa0;
+ break;
+ case 0x01:
+ /* CX23885-12Z */
+ dev->hwrevision = 0xa1;
+ break;
+ case 0x02:
+ /* CX23885-13Z */
+ dev->hwrevision = 0xb0;
+ break;
+ case 0x03:
+ /* CX23888-22Z */
+ dev->hwrevision = 0xc0;
+ break;
+ case 0x0e:
+ /* CX23887-15Z */
+ dev->hwrevision = 0xc0;
+ case 0x0f:
+ /* CX23887-14Z */
+ dev->hwrevision = 0xb1;
+ break;
+ default:
+ printk(KERN_ERR "%s() New hardware revision found 0x%x\n",
+ __FUNCTION__, dev->hwrevision);
+ }
+ if (dev->hwrevision)
+ printk(KERN_INFO "%s() Hardware revision = 0x%02x\n",
+ __FUNCTION__, dev->hwrevision);
+ else
+ printk(KERN_ERR "%s() Hardware revision unknown 0x%x\n",
+ __FUNCTION__, dev->hwrevision);
+}
+
static int cx23885_dev_setup(struct cx23885_dev *dev)
{
int i;
@@ -832,6 +870,8 @@
}
}
+ cx23885_dev_checkrevision(dev);
+
return 0;
}
diff --git a/drivers/media/video/cx23885/cx23885-reg.h b/drivers/media/video/cx23885/cx23885-reg.h
index 162169f..38abf49 100644
--- a/drivers/media/video/cx23885/cx23885-reg.h
+++ b/drivers/media/video/cx23885/cx23885-reg.h
@@ -276,6 +276,7 @@
#define RDR_CFG0 0x00050000
#define RDR_CFG1 0x00050004
+#define RDR_CFG2 0x00050008
#define RDR_TLCTL0 0x00050318
/* APB DMAC Current Buffer Pointer */
diff --git a/drivers/media/video/cx23885/cx23885.h b/drivers/media/video/cx23885/cx23885.h
index 974ec14..48d0c87 100644
--- a/drivers/media/video/cx23885/cx23885.h
+++ b/drivers/media/video/cx23885/cx23885.h
@@ -191,6 +191,7 @@
u32 __iomem *lmmio;
u8 __iomem *bmmio;
int pci_irqmask;
+ int hwrevision;
/* I2C adapters: Master 1 & 2 (External) & Master 3 (Internal only) */
struct cx23885_i2c i2c_bus[3];
