[PATCH] USB: add sl811_cs support
This adds support for a CF-card USB Host adapter, the Ratoc REX-CFU1U, by wrapping a PCMCIA driver around the existing "sl811-hcd" platform driver. This CF card is especially useful for PDAs, which currently tend to have no other solution for USB host capability. From: Botond Botyanszki <boti@rocketmail.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
David Brownell
Greg KH
Родитель
1e9a47b62f
Коммит
c6de2b64eb
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@ -124,3 +124,14 @@ config USB_SL811_HCD
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To compile this driver as a module, choose M here: the
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module will be called sl811-hcd.
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config USB_SL811_CS
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tristate "CF/PCMCIA support for SL811HS HCD"
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depends on USB_SL811_HCD && PCMCIA
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default N
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help
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Wraps a PCMCIA driver around the SL811HS HCD, supporting the RATOC
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REX-CFU1U CF card (often used with PDAs). If unsure, say N.
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To compile this driver as a module, choose M here: the
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module will be called "sl811_cs".
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@ -7,4 +7,5 @@ obj-$(CONFIG_USB_EHCI_HCD) += ehci-hcd.o
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obj-$(CONFIG_USB_OHCI_HCD) += ohci-hcd.o
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obj-$(CONFIG_USB_UHCI_HCD) += uhci-hcd.o
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obj-$(CONFIG_USB_SL811_HCD) += sl811-hcd.o
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obj-$(CONFIG_USB_SL811_CS) += sl811_cs.o
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obj-$(CONFIG_ETRAX_ARCH_V10) += hc_crisv10.o
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@ -0,0 +1,442 @@
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/*
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* PCMCIA driver for SL811HS (as found in REX-CFU1U)
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* Filename: sl811_cs.c
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* Author: Yukio Yamamoto
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*
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* Port to sl811-hcd and 2.6.x by
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* Botond Botyanszki <boti@rocketmail.com>
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* Simon Pickering
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*
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* Last update: 2005-05-12
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/sched.h>
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#include <linux/ptrace.h>
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#include <linux/slab.h>
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#include <linux/string.h>
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#include <linux/timer.h>
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#include <linux/ioport.h>
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#include <pcmcia/version.h>
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#include <pcmcia/cs_types.h>
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#include <pcmcia/cs.h>
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#include <pcmcia/cistpl.h>
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#include <pcmcia/cisreg.h>
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#include <pcmcia/ds.h>
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#include <linux/usb_sl811.h>
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MODULE_AUTHOR("Botond Botyanszki");
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MODULE_DESCRIPTION("REX-CFU1U PCMCIA driver for 2.6");
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MODULE_LICENSE("GPL");
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/*====================================================================*/
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/* MACROS */
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/*====================================================================*/
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#if defined(DEBUG) || defined(CONFIG_USB_DEBUG) || defined(PCMCIA_DEBUG)
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static int pc_debug = 0;
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module_param(pc_debug, int, 0644);
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#define DBG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG "sl811_cs: " args)
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#else
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#define DBG(n, args...) do{}while(0)
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#endif /* no debugging */
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#define INFO(args...) printk(KERN_INFO "sl811_cs: " args)
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#define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0444)
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#define CS_CHECK(fn, ret) \
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do { \
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last_fn = (fn); \
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if ((last_ret = (ret)) != 0) \
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goto cs_failed; \
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} while (0)
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/*====================================================================*/
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/* VARIABLES */
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/*====================================================================*/
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static const char driver_name[DEV_NAME_LEN] = "sl811_cs";
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static dev_link_t *dev_list = NULL;
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static int irq_list[4] = { -1 };
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static int irq_list_count;
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module_param_array(irq_list, int, &irq_list_count, 0444);
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INT_MODULE_PARM(irq_mask, 0xdeb8);
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typedef struct local_info_t {
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dev_link_t link;
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dev_node_t node;
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} local_info_t;
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/*====================================================================*/
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static void release_platform_dev(struct device * dev)
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{
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DBG(0, "sl811_cs platform_dev release\n");
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dev->parent = NULL;
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}
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static struct sl811_platform_data platform_data = {
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.potpg = 100,
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.power = 50, /* == 100mA */
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// .reset = ... FIXME: invoke CF reset on the card
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};
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static struct resource resources[] = {
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[0] = {
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.flags = IORESOURCE_IRQ,
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},
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[1] = {
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// .name = "address",
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.flags = IORESOURCE_IO,
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},
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[2] = {
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// .name = "data",
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.flags = IORESOURCE_IO,
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},
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};
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extern struct device_driver sl811h_driver;
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static struct platform_device platform_dev = {
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.id = -1,
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.dev = {
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.platform_data = &platform_data,
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.release = release_platform_dev,
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},
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.resource = resources,
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.num_resources = ARRAY_SIZE(resources),
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};
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static int sl811_hc_init(struct device *parent, ioaddr_t base_addr, int irq)
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{
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if (platform_dev.dev.parent)
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return -EBUSY;
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platform_dev.dev.parent = parent;
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/* finish seting up the platform device */
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resources[0].start = irq;
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resources[1].start = base_addr;
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resources[1].end = base_addr;
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resources[2].start = base_addr + 1;
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resources[2].end = base_addr + 1;
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/* The driver core will probe for us. We know sl811-hcd has been
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* initialized already because of the link order dependency.
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*/
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platform_dev.name = sl811h_driver.name;
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return platform_device_register(&platform_dev);
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}
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/*====================================================================*/
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static void sl811_cs_detach(dev_link_t *link)
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{
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dev_link_t **linkp;
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DBG(0, "sl811_cs_detach(0x%p)\n", link);
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/* Locate device structure */
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for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next) {
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if (*linkp == link)
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break;
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}
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if (*linkp == NULL)
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return;
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/* Break the link with Card Services */
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if (link->handle)
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pcmcia_deregister_client(link->handle);
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/* Unlink device structure, and free it */
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*linkp = link->next;
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/* This points to the parent local_info_t struct */
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kfree(link->priv);
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}
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static void sl811_cs_release(dev_link_t * link)
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{
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DBG(0, "sl811_cs_release(0x%p)\n", link);
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if (link->open) {
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DBG(1, "sl811_cs: release postponed, '%s' still open\n",
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link->dev->dev_name);
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link->state |= DEV_STALE_CONFIG;
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return;
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}
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/* Unlink the device chain */
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link->dev = NULL;
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platform_device_unregister(&platform_dev);
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pcmcia_release_configuration(link->handle);
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if (link->io.NumPorts1)
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pcmcia_release_io(link->handle, &link->io);
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if (link->irq.AssignedIRQ)
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pcmcia_release_irq(link->handle, &link->irq);
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link->state &= ~DEV_CONFIG;
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if (link->state & DEV_STALE_LINK)
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sl811_cs_detach(link);
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}
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static void sl811_cs_config(dev_link_t *link)
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{
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client_handle_t handle = link->handle;
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struct device *parent = &handle_to_dev(handle);
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local_info_t *dev = link->priv;
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tuple_t tuple;
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cisparse_t parse;
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int last_fn, last_ret;
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u_char buf[64];
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config_info_t conf;
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cistpl_cftable_entry_t dflt = { 0 };
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DBG(0, "sl811_cs_config(0x%p)\n", link);
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tuple.DesiredTuple = CISTPL_CONFIG;
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tuple.Attributes = 0;
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tuple.TupleData = buf;
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tuple.TupleDataMax = sizeof(buf);
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tuple.TupleOffset = 0;
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CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
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CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
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CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
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link->conf.ConfigBase = parse.config.base;
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link->conf.Present = parse.config.rmask[0];
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/* Configure card */
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link->state |= DEV_CONFIG;
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/* Look up the current Vcc */
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CS_CHECK(GetConfigurationInfo,
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pcmcia_get_configuration_info(handle, &conf));
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link->conf.Vcc = conf.Vcc;
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tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
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CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
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while (1) {
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cistpl_cftable_entry_t *cfg = &(parse.cftable_entry);
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if (pcmcia_get_tuple_data(handle, &tuple) != 0
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|| pcmcia_parse_tuple(handle, &tuple, &parse)
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!= 0)
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goto next_entry;
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if (cfg->flags & CISTPL_CFTABLE_DEFAULT) {
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dflt = *cfg;
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}
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if (cfg->index == 0)
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goto next_entry;
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link->conf.ConfigIndex = cfg->index;
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/* Use power settings for Vcc and Vpp if present */
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/* Note that the CIS values need to be rescaled */
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if (cfg->vcc.present & (1<<CISTPL_POWER_VNOM)) {
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if (cfg->vcc.param[CISTPL_POWER_VNOM]/10000
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!= conf.Vcc)
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goto next_entry;
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} else if (dflt.vcc.present & (1<<CISTPL_POWER_VNOM)) {
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if (dflt.vcc.param[CISTPL_POWER_VNOM]/10000
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!= conf.Vcc)
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goto next_entry;
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}
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if (cfg->vpp1.present & (1<<CISTPL_POWER_VNOM))
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link->conf.Vpp1 = link->conf.Vpp2 =
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cfg->vpp1.param[CISTPL_POWER_VNOM]/10000;
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else if (dflt.vpp1.present & (1<<CISTPL_POWER_VNOM))
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link->conf.Vpp1 = link->conf.Vpp2 =
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dflt.vpp1.param[CISTPL_POWER_VNOM]/10000;
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/* we need an interrupt */
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if (cfg->irq.IRQInfo1 || dflt.irq.IRQInfo1)
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link->conf.Attributes |= CONF_ENABLE_IRQ;
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/* IO window settings */
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link->io.NumPorts1 = link->io.NumPorts2 = 0;
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if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) {
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cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io;
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link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
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link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
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link->io.BasePort1 = io->win[0].base;
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link->io.NumPorts1 = io->win[0].len;
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if (pcmcia_request_io(link->handle, &link->io) != 0)
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goto next_entry;
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}
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break;
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next_entry:
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if (link->io.NumPorts1)
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pcmcia_release_io(link->handle, &link->io);
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last_ret = pcmcia_get_next_tuple(handle, &tuple);
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}
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/* require an IRQ and two registers */
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if (!link->io.NumPorts1 || link->io.NumPorts1 < 2)
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goto cs_failed;
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if (link->conf.Attributes & CONF_ENABLE_IRQ)
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CS_CHECK(RequestIRQ,
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pcmcia_request_irq(link->handle, &link->irq));
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else
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goto cs_failed;
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CS_CHECK(RequestConfiguration,
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pcmcia_request_configuration(link->handle, &link->conf));
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sprintf(dev->node.dev_name, driver_name);
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dev->node.major = dev->node.minor = 0;
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link->dev = &dev->node;
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printk(KERN_INFO "%s: index 0x%02x: Vcc %d.%d",
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dev->node.dev_name, link->conf.ConfigIndex,
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link->conf.Vcc/10, link->conf.Vcc%10);
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if (link->conf.Vpp1)
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printk(", Vpp %d.%d", link->conf.Vpp1/10, link->conf.Vpp1%10);
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printk(", irq %d", link->irq.AssignedIRQ);
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printk(", io 0x%04x-0x%04x", link->io.BasePort1,
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link->io.BasePort1+link->io.NumPorts1-1);
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printk("\n");
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link->state &= ~DEV_CONFIG_PENDING;
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if (sl811_hc_init(parent, link->io.BasePort1, link->irq.AssignedIRQ)
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< 0) {
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cs_failed:
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printk("sl811_cs_config failed\n");
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cs_error(link->handle, last_fn, last_ret);
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sl811_cs_release(link);
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link->state &= ~DEV_CONFIG_PENDING;
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}
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}
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static int
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sl811_cs_event(event_t event, int priority, event_callback_args_t *args)
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{
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dev_link_t *link = args->client_data;
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DBG(1, "sl811_cs_event(0x%06x)\n", event);
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switch (event) {
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case CS_EVENT_CARD_REMOVAL:
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link->state &= ~DEV_PRESENT;
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if (link->state & DEV_CONFIG)
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sl811_cs_release(link);
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break;
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case CS_EVENT_CARD_INSERTION:
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link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
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sl811_cs_config(link);
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break;
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case CS_EVENT_PM_SUSPEND:
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link->state |= DEV_SUSPEND;
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/* Fall through... */
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case CS_EVENT_RESET_PHYSICAL:
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if (link->state & DEV_CONFIG)
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pcmcia_release_configuration(link->handle);
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break;
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case CS_EVENT_PM_RESUME:
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link->state &= ~DEV_SUSPEND;
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/* Fall through... */
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case CS_EVENT_CARD_RESET:
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if (link->state & DEV_CONFIG)
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pcmcia_request_configuration(link->handle, &link->conf);
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DBG(0, "reset sl811-hcd here?\n");
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break;
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}
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return 0;
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}
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static dev_link_t *sl811_cs_attach(void)
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{
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local_info_t *local;
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dev_link_t *link;
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client_reg_t client_reg;
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int ret, i;
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local = kmalloc(sizeof(local_info_t), GFP_KERNEL);
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if (!local)
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return NULL;
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memset(local, 0, sizeof(local_info_t));
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link = &local->link;
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link->priv = local;
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/* Initialize */
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link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
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link->irq.IRQInfo1 = IRQ_INFO2_VALID|IRQ_LEVEL_ID;
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if (irq_list[0] == -1)
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link->irq.IRQInfo2 = irq_mask;
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else
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for (i = 0; i < irq_list_count; i++)
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link->irq.IRQInfo2 |= 1 << irq_list[i];
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link->irq.Handler = NULL;
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link->conf.Attributes = 0;
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link->conf.Vcc = 33;
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link->conf.IntType = INT_MEMORY_AND_IO;
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/* Register with Card Services */
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link->next = dev_list;
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dev_list = link;
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client_reg.dev_info = (dev_info_t *) &driver_name;
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client_reg.Attributes = INFO_IO_CLIENT | INFO_CARD_SHARE;
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client_reg.EventMask =
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CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
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CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
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CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
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client_reg.event_handler = &sl811_cs_event;
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client_reg.Version = 0x0210;
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client_reg.event_callback_args.client_data = link;
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ret = pcmcia_register_client(&link->handle, &client_reg);
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if (ret != CS_SUCCESS) {
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cs_error(link->handle, RegisterClient, ret);
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sl811_cs_detach(link);
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return NULL;
|
||||
}
|
||||
|
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return link;
|
||||
}
|
||||
|
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static struct pcmcia_driver sl811_cs_driver = {
|
||||
.owner = THIS_MODULE,
|
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.drv = {
|
||||
.name = (char *)driver_name,
|
||||
},
|
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.attach = sl811_cs_attach,
|
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.detach = sl811_cs_detach,
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};
|
||||
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||||
/*====================================================================*/
|
||||
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||||
static int __init init_sl811_cs(void)
|
||||
{
|
||||
return pcmcia_register_driver(&sl811_cs_driver);
|
||||
}
|
||||
module_init(init_sl811_cs);
|
||||
|
||||
static void __exit exit_sl811_cs(void)
|
||||
{
|
||||
pcmcia_unregister_driver(&sl811_cs_driver);
|
||||
}
|
||||
module_exit(exit_sl811_cs);
|
||||
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