Daniel Drake schrieb:
The OLPC XO-1.5 does not use the standard port wiring suggested
in the viafb driver.
This is required for the upcoming OLPC DCON and via-camera drivers,
to be submitted soon.
Why? What happens if this patch is not applied?
Please understand, that I, as a maintainer, try to avoid platform specific code
as much as possible so a little explanation would be good.
Thanks,
Florian Tobias Schandinat
Signed-off-by: Daniel Drake <dsd@xxxxxxxxxx>
---
drivers/video/via/via-core.c | 25 +++++++++++++++++++++++++
1 files changed, 25 insertions(+), 0 deletions(-)
diff --git a/drivers/video/via/via-core.c b/drivers/video/via/via-core.c
index 08390fe..a0efb8f 100644
--- a/drivers/video/via/via-core.c
+++ b/drivers/video/via/via-core.c
@@ -16,6 +16,10 @@
#include <linux/interrupt.h>
#include <linux/platform_device.h>
+#ifdef CONFIG_OLPC
+#include <asm/olpc.h>
+#endif
+
/*
* The default port config.
*/
@@ -28,6 +32,21 @@ static const struct via_port_cfg adap_configs[] = {
{ 0, 0, 0, 0 }
};
+#ifdef CONFIG_OLPC
+/*
+ * The OLPC XO-1.5 puts the camera power and reset lines onto
+ * GPIO 2C. The configuration for 26 is also modified.
+ */
+static const struct via_port_cfg olpc_adap_configs[] = {
+ [VIA_PORT_26] = { VIA_PORT_I2C, VIA_MODE_I2C, VIASR, 0x26 },
+ [VIA_PORT_31] = { VIA_PORT_I2C, VIA_MODE_I2C, VIASR, 0x31 },
+ [VIA_PORT_25] = { VIA_PORT_GPIO, VIA_MODE_GPIO, VIASR, 0x25 },
+ [VIA_PORT_2C] = { VIA_PORT_GPIO, VIA_MODE_GPIO, VIASR, 0x2c },
+ [VIA_PORT_3D] = { VIA_PORT_GPIO, VIA_MODE_GPIO, VIASR, 0x3d },
+ { 0, 0, 0, 0 }
+};
+#endif
+
/*
* We currently only support one viafb device (will there ever be
* more than one?), so just declare it globally here.
@@ -575,6 +594,12 @@ static int __devinit via_pci_probe(struct pci_dev *pdev,
global_dev.pdev = pdev;
global_dev.chip_type = ent->driver_data;
global_dev.port_cfg = adap_configs;
+
+#ifdef CONFIG_OLPC
+ if (machine_is_olpc())
+ global_dev.port_cfg = olpc_adap_configs;
+#endif
+
spin_lock_init(&global_dev.reg_lock);
ret = via_pci_setup_mmio(&global_dev);
if (ret)
--
To unsubscribe from this list: send the line "unsubscribe linux-fbdev" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
