cregit-Linux how code gets into the kernel

Release 4.7 drivers/usb/host/sl811_cs.c

Directory: drivers/usb/host
/*
 * 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; }

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Total24100.00%2100.00%

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); }

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/*====================================================================*/
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); }

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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); }

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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); }

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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; }

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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); }

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david brownelldavid brownell4074.07%116.67%
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yoann padioleauyoann padioleau11.85%116.67%
Total54100.00%6100.00%

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);

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h hartley sweetenh hartley sweeten10.14%13.85%
joe perchesjoe perches10.14%13.85%
Total691100.00%26100.00%
Directory: drivers/usb/host
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