aboutsummaryrefslogtreecommitdiff
path: root/drivers/uio
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/uio')
-rw-r--r--drivers/uio/Kconfig18
-rw-r--r--drivers/uio/Makefile1
-rw-r--r--drivers/uio/uio.c25
-rw-r--r--drivers/uio/uio_aec.c175
4 files changed, 218 insertions, 1 deletions
diff --git a/drivers/uio/Kconfig b/drivers/uio/Kconfig
index 04b954cfce7..7f86534de26 100644
--- a/drivers/uio/Kconfig
+++ b/drivers/uio/Kconfig
@@ -58,6 +58,24 @@ config UIO_SMX
If you compile this as a module, it will be called uio_smx.
+config UIO_AEC
+ tristate "AEC video timestamp device"
+ depends on PCI
+ default n
+ help
+
+ UIO driver for the Adrienne Electronics Corporation PCI time
+ code device.
+
+ This device differs from other UIO devices since it uses I/O
+ ports instead of memory mapped I/O. In order to make it
+ possible for UIO to work with this device a utility, uioport,
+ can be used to read and write the ports:
+
+ git clone git://ifup.org/philips/uioport.git
+
+ If you compile this as a module, it will be called uio_aec.
+
config UIO_SERCOS3
tristate "Automata Sercos III PCI card driver"
default n
diff --git a/drivers/uio/Makefile b/drivers/uio/Makefile
index e6955814985..5c2586d7579 100644
--- a/drivers/uio/Makefile
+++ b/drivers/uio/Makefile
@@ -3,4 +3,5 @@ obj-$(CONFIG_UIO_CIF) += uio_cif.o
obj-$(CONFIG_UIO_PDRV) += uio_pdrv.o
obj-$(CONFIG_UIO_PDRV_GENIRQ) += uio_pdrv_genirq.o
obj-$(CONFIG_UIO_SMX) += uio_smx.o
+obj-$(CONFIG_UIO_AEC) += uio_aec.o
obj-$(CONFIG_UIO_SERCOS3) += uio_sercos3.o
diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c
index 4ca85a113aa..03efb065455 100644
--- a/drivers/uio/uio.c
+++ b/drivers/uio/uio.c
@@ -61,6 +61,14 @@ struct uio_map {
};
#define to_map(map) container_of(map, struct uio_map, kobj)
+static ssize_t map_name_show(struct uio_mem *mem, char *buf)
+{
+ if (unlikely(!mem->name))
+ mem->name = "";
+
+ return sprintf(buf, "%s\n", mem->name);
+}
+
static ssize_t map_addr_show(struct uio_mem *mem, char *buf)
{
return sprintf(buf, "0x%lx\n", mem->addr);
@@ -82,6 +90,8 @@ struct map_sysfs_entry {
ssize_t (*store)(struct uio_mem *, const char *, size_t);
};
+static struct map_sysfs_entry name_attribute =
+ __ATTR(name, S_IRUGO, map_name_show, NULL);
static struct map_sysfs_entry addr_attribute =
__ATTR(addr, S_IRUGO, map_addr_show, NULL);
static struct map_sysfs_entry size_attribute =
@@ -90,6 +100,7 @@ static struct map_sysfs_entry offset_attribute =
__ATTR(offset, S_IRUGO, map_offset_show, NULL);
static struct attribute *attrs[] = {
+ &name_attribute.attr,
&addr_attribute.attr,
&size_attribute.attr,
&offset_attribute.attr,
@@ -133,6 +144,14 @@ struct uio_portio {
};
#define to_portio(portio) container_of(portio, struct uio_portio, kobj)
+static ssize_t portio_name_show(struct uio_port *port, char *buf)
+{
+ if (unlikely(!port->name))
+ port->name = "";
+
+ return sprintf(buf, "%s\n", port->name);
+}
+
static ssize_t portio_start_show(struct uio_port *port, char *buf)
{
return sprintf(buf, "0x%lx\n", port->start);
@@ -159,6 +178,8 @@ struct portio_sysfs_entry {
ssize_t (*store)(struct uio_port *, const char *, size_t);
};
+static struct portio_sysfs_entry portio_name_attribute =
+ __ATTR(name, S_IRUGO, portio_name_show, NULL);
static struct portio_sysfs_entry portio_start_attribute =
__ATTR(start, S_IRUGO, portio_start_show, NULL);
static struct portio_sysfs_entry portio_size_attribute =
@@ -167,6 +188,7 @@ static struct portio_sysfs_entry portio_porttype_attribute =
__ATTR(porttype, S_IRUGO, portio_porttype_show, NULL);
static struct attribute *portio_attrs[] = {
+ &portio_name_attribute.attr,
&portio_start_attribute.attr,
&portio_size_attribute.attr,
&portio_porttype_attribute.attr,
@@ -686,7 +708,8 @@ static int uio_mmap(struct file *filep, struct vm_area_struct *vma)
return -EINVAL;
requested_pages = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
- actual_pages = (idev->info->mem[mi].size + PAGE_SIZE -1) >> PAGE_SHIFT;
+ actual_pages = ((idev->info->mem[mi].addr & ~PAGE_MASK)
+ + idev->info->mem[mi].size + PAGE_SIZE -1) >> PAGE_SHIFT;
if (requested_pages > actual_pages)
return -EINVAL;
diff --git a/drivers/uio/uio_aec.c b/drivers/uio/uio_aec.c
new file mode 100644
index 00000000000..b7830e9a3ba
--- /dev/null
+++ b/drivers/uio/uio_aec.c
@@ -0,0 +1,175 @@
+/*
+ * uio_aec.c -- simple driver for Adrienne Electronics Corp time code PCI device
+ *
+ * Copyright (C) 2008 Brandon Philips <brandon@ifup.org>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc., 59
+ * Temple Place, Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/cdev.h>
+#include <linux/fs.h>
+#include <linux/io.h>
+#include <linux/uaccess.h>
+#include <linux/uio_driver.h>
+
+#define PCI_VENDOR_ID_AEC 0xaecb
+#define PCI_DEVICE_ID_AEC_VITCLTC 0x6250
+
+#define INT_ENABLE_ADDR 0xFC
+#define INT_ENABLE 0x10
+#define INT_DISABLE 0x0
+
+#define INT_MASK_ADDR 0x2E
+#define INT_MASK_ALL 0x3F
+
+#define INTA_DRVR_ADDR 0xFE
+#define INTA_ENABLED_FLAG 0x08
+#define INTA_FLAG 0x01
+
+#define MAILBOX 0x0F
+
+static struct pci_device_id ids[] = {
+ { PCI_DEVICE(PCI_VENDOR_ID_AEC, PCI_DEVICE_ID_AEC_VITCLTC), },
+ { 0, }
+};
+MODULE_DEVICE_TABLE(pci, ids);
+
+static irqreturn_t aectc_irq(int irq, struct uio_info *dev_info)
+{
+ void __iomem *int_flag = dev_info->priv + INTA_DRVR_ADDR;
+ unsigned char status = ioread8(int_flag);
+
+
+ if ((status & INTA_ENABLED_FLAG) && (status & INTA_FLAG)) {
+ /* application writes 0x00 to 0x2F to get next interrupt */
+ status = ioread8(dev_info->priv + MAILBOX);
+ return IRQ_HANDLED;
+ }
+
+ return IRQ_NONE;
+}
+
+static void print_board_data(struct pci_dev *pdev, struct uio_info *i)
+{
+ dev_info(&pdev->dev, "PCI-TC board vendor: %x%x number: %x%x"
+ " revision: %c%c\n",
+ ioread8(i->priv + 0x01),
+ ioread8(i->priv + 0x00),
+ ioread8(i->priv + 0x03),
+ ioread8(i->priv + 0x02),
+ ioread8(i->priv + 0x06),
+ ioread8(i->priv + 0x07));
+}
+
+static int __devinit probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+ struct uio_info *info;
+ int ret;
+
+ info = kzalloc(sizeof(struct uio_info), GFP_KERNEL);
+ if (!info)
+ return -ENOMEM;
+
+ if (pci_enable_device(pdev))
+ goto out_free;
+
+ if (pci_request_regions(pdev, "aectc"))
+ goto out_disable;
+
+ info->name = "aectc";
+ info->port[0].start = pci_resource_start(pdev, 0);
+ if (!info->port[0].start)
+ goto out_release;
+ info->priv = pci_iomap(pdev, 0, 0);
+ if (!info->priv)
+ goto out_release;
+ info->port[0].size = pci_resource_len(pdev, 0);
+ info->port[0].porttype = UIO_PORT_GPIO;
+
+ info->version = "0.0.1";
+ info->irq = pdev->irq;
+ info->irq_flags = IRQF_SHARED;
+ info->handler = aectc_irq;
+
+ print_board_data(pdev, info);
+ ret = uio_register_device(&pdev->dev, info);
+ if (ret)
+ goto out_unmap;
+
+ iowrite32(INT_ENABLE, info->priv + INT_ENABLE_ADDR);
+ iowrite8(INT_MASK_ALL, info->priv + INT_MASK_ADDR);
+ if (!(ioread8(info->priv + INTA_DRVR_ADDR)
+ & INTA_ENABLED_FLAG))
+ dev_err(&pdev->dev, "aectc: interrupts not enabled\n");
+
+ pci_set_drvdata(pdev, info);
+
+ return 0;
+
+out_unmap:
+ pci_iounmap(pdev, info->priv);
+out_release:
+ pci_release_regions(pdev);
+out_disable:
+ pci_disable_device(pdev);
+out_free:
+ kfree(info);
+ return -ENODEV;
+}
+
+static void remove(struct pci_dev *pdev)
+{
+ struct uio_info *info = pci_get_drvdata(pdev);
+
+ /* disable interrupts */
+ iowrite8(INT_DISABLE, info->priv + INT_MASK_ADDR);
+ iowrite32(INT_DISABLE, info->priv + INT_ENABLE_ADDR);
+ /* read mailbox to ensure board drops irq */
+ ioread8(info->priv + MAILBOX);
+
+ uio_unregister_device(info);
+ pci_release_regions(pdev);
+ pci_disable_device(pdev);
+ pci_set_drvdata(pdev, NULL);
+ iounmap(info->priv);
+
+ kfree(info);
+}
+
+static struct pci_driver pci_driver = {
+ .name = "aectc",
+ .id_table = ids,
+ .probe = probe,
+ .remove = remove,
+};
+
+static int __init aectc_init(void)
+{
+ return pci_register_driver(&pci_driver);
+}
+
+static void __exit aectc_exit(void)
+{
+ pci_unregister_driver(&pci_driver);
+}
+
+MODULE_LICENSE("GPL");
+
+module_init(aectc_init);
+module_exit(aectc_exit);