diff options
Diffstat (limited to 'drivers/usb/host/sl811_cs.c')
| -rw-r--r-- | drivers/usb/host/sl811_cs.c | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/drivers/usb/host/sl811_cs.c b/drivers/usb/host/sl811_cs.c new file mode 100644 index 000000000..72136373f --- /dev/null +++ b/drivers/usb/host/sl811_cs.c @@ -0,0 +1,203 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * PCMCIA driver for SL811HS (as found in REX-CFU1U) + * Filename: sl811_cs.c + * Author: Yukio Yamamoto + * + * Port to sl811-hcd and 2.6.x by + * Botond Botyanszki <boti@rocketmail.com> + * Simon Pickering + * + * Last update: 2005-05-12 + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/ptrace.h> +#include <linux/slab.h> +#include <linux/string.h> +#include <linux/timer.h> +#include <linux/ioport.h> +#include <linux/platform_device.h> + +#include <pcmcia/cistpl.h> +#include <pcmcia/cisreg.h> +#include <pcmcia/ds.h> + +#include <linux/usb/sl811.h> + +MODULE_AUTHOR("Botond Botyanszki"); +MODULE_DESCRIPTION("REX-CFU1U PCMCIA driver for 2.6"); +MODULE_LICENSE("GPL"); + + +/*====================================================================*/ +/* MACROS */ +/*====================================================================*/ + +#define INFO(args...) printk(KERN_INFO "sl811_cs: " args) + +/*====================================================================*/ +/* VARIABLES */ +/*====================================================================*/ + +typedef struct local_info_t { + struct pcmcia_device *p_dev; +} local_info_t; + +static void sl811_cs_release(struct pcmcia_device * link); + +/*====================================================================*/ + +static void release_platform_dev(struct device * dev) +{ + dev_dbg(dev, "sl811_cs platform_dev release\n"); + dev->parent = NULL; +} + +static struct sl811_platform_data platform_data = { + .potpg = 100, + .power = 50, /* == 100mA */ + // .reset = ... FIXME: invoke CF reset on the card +}; + +static struct resource resources[] = { + [0] = { + .flags = IORESOURCE_IRQ, + }, + [1] = { + // .name = "address", + .flags = IORESOURCE_IO, + }, + [2] = { + // .name = "data", + .flags = IORESOURCE_IO, + }, +}; + +extern struct platform_driver sl811h_driver; + +static struct platform_device platform_dev = { + .id = -1, + .dev = { + .platform_data = &platform_data, + .release = release_platform_dev, + }, + .resource = resources, + .num_resources = ARRAY_SIZE(resources), +}; + +static int sl811_hc_init(struct device *parent, resource_size_t base_addr, + int irq) +{ + if (platform_dev.dev.parent) + return -EBUSY; + platform_dev.dev.parent = parent; + + /* finish seting up the platform device */ + resources[0].start = irq; + + resources[1].start = base_addr; + resources[1].end = base_addr; + + resources[2].start = base_addr + 1; + resources[2].end = base_addr + 1; + + /* The driver core will probe for us. We know sl811-hcd has been + * initialized already because of the link order dependency created + * by referencing "sl811h_driver". + */ + platform_dev.name = sl811h_driver.driver.name; + return platform_device_register(&platform_dev); +} + +/*====================================================================*/ + +static void sl811_cs_detach(struct pcmcia_device *link) +{ + dev_dbg(&link->dev, "sl811_cs_detach\n"); + + sl811_cs_release(link); + + /* This points to the parent local_info_t struct */ + kfree(link->priv); +} + +static void sl811_cs_release(struct pcmcia_device * link) +{ + dev_dbg(&link->dev, "sl811_cs_release\n"); + + pcmcia_disable_device(link); + platform_device_unregister(&platform_dev); +} + +static int sl811_cs_config_check(struct pcmcia_device *p_dev, void *priv_data) +{ + if (p_dev->config_index == 0) + return -EINVAL; + + return pcmcia_request_io(p_dev); +} + + +static int sl811_cs_config(struct pcmcia_device *link) +{ + struct device *parent = &link->dev; + int ret; + + dev_dbg(&link->dev, "sl811_cs_config\n"); + + link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_VPP | + CONF_AUTO_CHECK_VCC | CONF_AUTO_SET_IO; + + if (pcmcia_loop_config(link, sl811_cs_config_check, NULL)) + goto failed; + + /* require an IRQ and two registers */ + if (resource_size(link->resource[0]) < 2) + goto failed; + + if (!link->irq) + goto failed; + + ret = pcmcia_enable_device(link); + if (ret) + goto failed; + + if (sl811_hc_init(parent, link->resource[0]->start, link->irq) + < 0) { +failed: + printk(KERN_WARNING "sl811_cs_config failed\n"); + sl811_cs_release(link); + return -ENODEV; + } + return 0; +} + +static int sl811_cs_probe(struct pcmcia_device *link) +{ + local_info_t *local; + + local = kzalloc(sizeof(local_info_t), GFP_KERNEL); + if (!local) + return -ENOMEM; + local->p_dev = link; + link->priv = local; + + return sl811_cs_config(link); +} + +static const struct pcmcia_device_id sl811_ids[] = { + PCMCIA_DEVICE_MANF_CARD(0xc015, 0x0001), /* RATOC USB HOST CF+ Card */ + PCMCIA_DEVICE_NULL, +}; +MODULE_DEVICE_TABLE(pcmcia, sl811_ids); + +static struct pcmcia_driver sl811_cs_driver = { + .owner = THIS_MODULE, + .name = "sl811_cs", + .probe = sl811_cs_probe, + .remove = sl811_cs_detach, + .id_table = sl811_ids, +}; +module_pcmcia_driver(sl811_cs_driver); |