[media] radio-isa: PnP support for the new ISA radio framework
Add PnP support to the new ISA radio framework. Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Reviewed-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Ondrej Zary
Mauro Carvalho Chehab
parent
8766e86535
commit
865d7ec934
2 changed files with 117 additions and 47 deletions
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@ -199,56 +199,31 @@ static bool radio_isa_valid_io(const struct radio_isa_driver *drv, int io)
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return false;
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}
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int radio_isa_probe(struct device *pdev, unsigned int dev)
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struct radio_isa_card *radio_isa_alloc(struct radio_isa_driver *drv,
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struct device *pdev)
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{
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struct radio_isa_driver *drv = pdev->platform_data;
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const struct radio_isa_ops *ops = drv->ops;
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struct v4l2_device *v4l2_dev;
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struct radio_isa_card *isa;
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int res;
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struct radio_isa_card *isa = drv->ops->alloc();
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if (!isa)
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return NULL;
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isa = drv->ops->alloc();
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if (isa == NULL)
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return -ENOMEM;
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dev_set_drvdata(pdev, isa);
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isa->drv = drv;
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isa->io = drv->io_params[dev];
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v4l2_dev = &isa->v4l2_dev;
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strlcpy(v4l2_dev->name, dev_name(pdev), sizeof(v4l2_dev->name));
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if (drv->probe && ops->probe) {
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int i;
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return isa;
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}
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for (i = 0; i < drv->num_of_io_ports; ++i) {
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int io = drv->io_ports[i];
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int radio_isa_common_probe(struct radio_isa_card *isa, struct device *pdev,
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int radio_nr, unsigned region_size)
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{
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const struct radio_isa_driver *drv = isa->drv;
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const struct radio_isa_ops *ops = drv->ops;
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struct v4l2_device *v4l2_dev = &isa->v4l2_dev;
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int res;
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if (request_region(io, drv->region_size, v4l2_dev->name)) {
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bool found = ops->probe(isa, io);
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release_region(io, drv->region_size);
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if (found) {
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isa->io = io;
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break;
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}
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}
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}
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}
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if (!radio_isa_valid_io(drv, isa->io)) {
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int i;
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if (isa->io < 0)
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return -ENODEV;
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v4l2_err(v4l2_dev, "you must set an I/O address with io=0x%03x",
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drv->io_ports[0]);
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for (i = 1; i < drv->num_of_io_ports; i++)
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printk(KERN_CONT "/0x%03x", drv->io_ports[i]);
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printk(KERN_CONT ".\n");
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kfree(isa);
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return -EINVAL;
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}
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if (!request_region(isa->io, drv->region_size, v4l2_dev->name)) {
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if (!request_region(isa->io, region_size, v4l2_dev->name)) {
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v4l2_err(v4l2_dev, "port 0x%x already in use\n", isa->io);
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kfree(isa);
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return -EBUSY;
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@ -301,8 +276,8 @@ int radio_isa_probe(struct device *pdev, unsigned int dev)
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v4l2_err(v4l2_dev, "Could not setup card\n");
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goto err_node_reg;
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}
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res = video_register_device(&isa->vdev, VFL_TYPE_RADIO,
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drv->radio_nr_params[dev]);
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res = video_register_device(&isa->vdev, VFL_TYPE_RADIO, radio_nr);
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if (res < 0) {
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v4l2_err(v4l2_dev, "Could not register device node\n");
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goto err_node_reg;
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@ -317,24 +292,110 @@ int radio_isa_probe(struct device *pdev, unsigned int dev)
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err_hdl:
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v4l2_device_unregister(&isa->v4l2_dev);
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err_dev_reg:
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release_region(isa->io, drv->region_size);
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release_region(isa->io, region_size);
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kfree(isa);
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return res;
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}
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EXPORT_SYMBOL_GPL(radio_isa_probe);
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int radio_isa_remove(struct device *pdev, unsigned int dev)
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int radio_isa_common_remove(struct radio_isa_card *isa, unsigned region_size)
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{
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struct radio_isa_card *isa = dev_get_drvdata(pdev);
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const struct radio_isa_ops *ops = isa->drv->ops;
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ops->s_mute_volume(isa, true, isa->volume ? isa->volume->cur.val : 0);
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video_unregister_device(&isa->vdev);
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v4l2_ctrl_handler_free(&isa->hdl);
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v4l2_device_unregister(&isa->v4l2_dev);
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release_region(isa->io, isa->drv->region_size);
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release_region(isa->io, region_size);
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v4l2_info(&isa->v4l2_dev, "Removed radio card %s\n", isa->drv->card);
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kfree(isa);
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return 0;
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}
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int radio_isa_probe(struct device *pdev, unsigned int dev)
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{
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struct radio_isa_driver *drv = pdev->platform_data;
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const struct radio_isa_ops *ops = drv->ops;
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struct v4l2_device *v4l2_dev;
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struct radio_isa_card *isa;
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isa = radio_isa_alloc(drv, pdev);
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if (!isa)
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return -ENOMEM;
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isa->io = drv->io_params[dev];
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v4l2_dev = &isa->v4l2_dev;
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if (drv->probe && ops->probe) {
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int i;
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for (i = 0; i < drv->num_of_io_ports; ++i) {
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int io = drv->io_ports[i];
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if (request_region(io, drv->region_size, v4l2_dev->name)) {
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bool found = ops->probe(isa, io);
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release_region(io, drv->region_size);
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if (found) {
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isa->io = io;
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break;
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}
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}
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}
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}
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if (!radio_isa_valid_io(drv, isa->io)) {
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int i;
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if (isa->io < 0)
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return -ENODEV;
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v4l2_err(v4l2_dev, "you must set an I/O address with io=0x%03x",
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drv->io_ports[0]);
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for (i = 1; i < drv->num_of_io_ports; i++)
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printk(KERN_CONT "/0x%03x", drv->io_ports[i]);
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printk(KERN_CONT ".\n");
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kfree(isa);
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return -EINVAL;
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}
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return radio_isa_common_probe(isa, pdev, drv->radio_nr_params[dev],
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drv->region_size);
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}
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EXPORT_SYMBOL_GPL(radio_isa_probe);
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int radio_isa_remove(struct device *pdev, unsigned int dev)
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{
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struct radio_isa_card *isa = dev_get_drvdata(pdev);
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return radio_isa_common_remove(isa, isa->drv->region_size);
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}
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EXPORT_SYMBOL_GPL(radio_isa_remove);
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#ifdef CONFIG_PNP
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int radio_isa_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id *dev_id)
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{
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struct pnp_driver *pnp_drv = to_pnp_driver(dev->dev.driver);
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struct radio_isa_driver *drv = container_of(pnp_drv,
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struct radio_isa_driver, pnp_driver);
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struct radio_isa_card *isa;
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if (!pnp_port_valid(dev, 0))
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return -ENODEV;
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isa = radio_isa_alloc(drv, &dev->dev);
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if (!isa)
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return -ENOMEM;
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isa->io = pnp_port_start(dev, 0);
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return radio_isa_common_probe(isa, &dev->dev, drv->radio_nr_params[0],
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pnp_port_len(dev, 0));
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}
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EXPORT_SYMBOL_GPL(radio_isa_pnp_probe);
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void radio_isa_pnp_remove(struct pnp_dev *dev)
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{
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struct radio_isa_card *isa = dev_get_drvdata(&dev->dev);
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radio_isa_common_remove(isa, pnp_port_len(dev, 0));
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}
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EXPORT_SYMBOL_GPL(radio_isa_pnp_remove);
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#endif
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@ -24,6 +24,7 @@
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#define _RADIO_ISA_H_
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#include <linux/isa.h>
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#include <linux/pnp.h>
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#include <linux/videodev2.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-ctrls.h>
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@ -76,6 +77,9 @@ struct radio_isa_ops {
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/* Top level structure needed to instantiate the cards */
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struct radio_isa_driver {
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struct isa_driver driver;
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#ifdef CONFIG_PNP
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struct pnp_driver pnp_driver;
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#endif
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const struct radio_isa_ops *ops;
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/* The module_param_array with the specified I/O ports */
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int *io_params;
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@ -101,5 +105,10 @@ struct radio_isa_driver {
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int radio_isa_match(struct device *pdev, unsigned int dev);
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int radio_isa_probe(struct device *pdev, unsigned int dev);
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int radio_isa_remove(struct device *pdev, unsigned int dev);
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#ifdef CONFIG_PNP
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int radio_isa_pnp_probe(struct pnp_dev *dev,
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const struct pnp_device_id *dev_id);
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void radio_isa_pnp_remove(struct pnp_dev *dev);
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#endif
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#endif
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