304 lines
7.6 KiB
C
304 lines
7.6 KiB
C
/*
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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/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 <linux/platform_device.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(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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typedef struct local_info_t {
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struct pcmcia_device *p_dev;
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dev_node_t node;
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} local_info_t;
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static void sl811_cs_release(struct pcmcia_device * link);
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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 platform_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, resource_size_t base_addr,
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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 created
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* by referencing "sl811h_driver".
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*/
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platform_dev.name = sl811h_driver.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(struct pcmcia_device *link)
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{
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DBG(0, "sl811_cs_detach(0x%p)\n", link);
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sl811_cs_release(link);
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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(struct pcmcia_device * link)
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{
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DBG(0, "sl811_cs_release(0x%p)\n", link);
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pcmcia_disable_device(link);
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platform_device_unregister(&platform_dev);
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}
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static int sl811_cs_config_check(struct pcmcia_device *p_dev,
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cistpl_cftable_entry_t *cfg,
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cistpl_cftable_entry_t *dflt,
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unsigned int vcc,
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void *priv_data)
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{
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if (cfg->index == 0)
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return -ENODEV;
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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 != vcc)
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return -ENODEV;
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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 != vcc)
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return -ENODEV;
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}
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if (cfg->vpp1.present & (1<<CISTPL_POWER_VNOM))
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p_dev->conf.Vpp =
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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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p_dev->conf.Vpp =
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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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p_dev->conf.Attributes |= CONF_ENABLE_IRQ;
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/* IO window settings */
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p_dev->io.NumPorts1 = p_dev->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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p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
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p_dev->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
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p_dev->io.BasePort1 = io->win[0].base;
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p_dev->io.NumPorts1 = io->win[0].len;
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return pcmcia_request_io(p_dev, &p_dev->io);
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}
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pcmcia_disable_device(p_dev);
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return -ENODEV;
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}
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static int sl811_cs_config(struct pcmcia_device *link)
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{
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struct device *parent = &handle_to_dev(link);
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local_info_t *dev = link->priv;
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int last_fn, last_ret;
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DBG(0, "sl811_cs_config(0x%p)\n", link);
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if (pcmcia_loop_config(link, sl811_cs_config_check, NULL))
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goto failed;
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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 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, &link->irq));
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else
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goto failed;
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CS_CHECK(RequestConfiguration,
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pcmcia_request_configuration(link, &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_node = &dev->node;
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printk(KERN_INFO "%s: index 0x%02x: ",
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dev->node.dev_name, link->conf.ConfigIndex);
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if (link->conf.Vpp)
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printk(", Vpp %d.%d", link->conf.Vpp/10, link->conf.Vpp%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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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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cs_error(link, last_fn, last_ret);
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failed:
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printk(KERN_WARNING "sl811_cs_config failed\n");
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sl811_cs_release(link);
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return -ENODEV;
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}
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return 0;
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}
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static int sl811_cs_probe(struct pcmcia_device *link)
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{
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local_info_t *local;
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local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
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if (!local)
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return -ENOMEM;
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local->p_dev = 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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link->irq.Handler = NULL;
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link->conf.Attributes = 0;
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link->conf.IntType = INT_MEMORY_AND_IO;
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return sl811_cs_config(link);
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}
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static struct pcmcia_device_id sl811_ids[] = {
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PCMCIA_DEVICE_MANF_CARD(0xc015, 0x0001), /* RATOC USB HOST CF+ Card */
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PCMCIA_DEVICE_NULL,
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};
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MODULE_DEVICE_TABLE(pcmcia, sl811_ids);
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static struct pcmcia_driver sl811_cs_driver = {
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.owner = THIS_MODULE,
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.drv = {
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.name = (char *)driver_name,
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},
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.probe = sl811_cs_probe,
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.remove = sl811_cs_detach,
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.id_table = sl811_ids,
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};
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/*====================================================================*/
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static int __init init_sl811_cs(void)
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{
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return pcmcia_register_driver(&sl811_cs_driver);
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}
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module_init(init_sl811_cs);
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static void __exit exit_sl811_cs(void)
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{
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pcmcia_unregister_driver(&sl811_cs_driver);
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}
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module_exit(exit_sl811_cs);
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