ucmb: move to packages feed
authorMichael Büsch <mb@bu3sch.de>
Wed, 18 Feb 2009 22:47:42 +0000 (22:47 +0000)
committerMichael Büsch <mb@bu3sch.de>
Wed, 18 Feb 2009 22:47:42 +0000 (22:47 +0000)
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@14560 3c298f89-4303-0410-b956-a3cf2f4a3e73

package/ucmb/Makefile [deleted file]
package/ucmb/driver/Makefile [deleted file]
package/ucmb/driver/ucmb.c [deleted file]
package/ucmb/driver/ucmb.h [deleted file]

diff --git a/package/ucmb/Makefile b/package/ucmb/Makefile
deleted file mode 100644 (file)
index 793fb9e..0000000
+++ /dev/null
@@ -1,40 +0,0 @@
-#
-# Copyright (C) 2009 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-
-include $(TOPDIR)/rules.mk
-include $(INCLUDE_DIR)/kernel.mk
-
-PKG_NAME:=ucmb
-PKG_RELEASE:=1
-
-include $(INCLUDE_DIR)/package.mk
-
-
-define KernelPackage/ucmb
-  SUBMENU:=Other modules
-  DEPENDS:=@LINUX_2_6 +kmod-spi-gpio +kmod-crc16
-  KCONFIG:=CONFIG_SPI=y \
-          CONFIG_SPI_MASTER=y
-  TITLE:=Microcontroller Message Bus (EXPERIMENTAL)
-  FILES:=$(PKG_BUILD_DIR)/ucmb.$(LINUX_KMOD_SUFFIX)
-  AUTOLOAD:=$(call AutoLoad,93,ucmb)
-endef
-
-define Build/Prepare
-       mkdir -p $(PKG_BUILD_DIR)
-       $(CP) ./driver/* $(PKG_BUILD_DIR)/
-endef
-
-define Build/Compile
-       $(MAKE) -C "$(LINUX_DIR)" \
-               CROSS_COMPILE="$(TARGET_CROSS)" \
-               ARCH="$(LINUX_KARCH)" \
-               SUBDIRS="$(PKG_BUILD_DIR)" \
-               EXTRA_CFLAGS="$(BUILDFLAGS)" \
-               modules
-endef
-
-$(eval $(call KernelPackage,ucmb))
diff --git a/package/ucmb/driver/Makefile b/package/ucmb/driver/Makefile
deleted file mode 100644 (file)
index a232a4a..0000000
+++ /dev/null
@@ -1 +0,0 @@
-obj-m := ucmb.o
diff --git a/package/ucmb/driver/ucmb.c b/package/ucmb/driver/ucmb.c
deleted file mode 100644 (file)
index 276553a..0000000
+++ /dev/null
@@ -1,467 +0,0 @@
-/*
- * Microcontroller Message Bus
- *
- * Copyright (c) 2009 Michael Buesch <mb@bu3sch.de>
- *
- * Licensed under the GNU/GPL. See COPYING for details.
- */
-
-#include "ucmb.h"
-
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/miscdevice.h>
-#include <linux/fs.h>
-#include <linux/spi/spi.h>
-#include <linux/spi/spi_gpio.h>
-#include <linux/spi/spi_bitbang.h>
-#include <linux/gfp.h>
-#include <linux/delay.h>
-#include <linux/crc16.h>
-
-
-#define PFX    "ucmb: "
-
-#define DEBUG
-
-
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("Microcontroller Message Bus");
-MODULE_AUTHOR("Michael Buesch");
-
-
-struct ucmb {
-       unsigned int msg_delay_ms;
-
-       /* Misc character device driver */
-       struct miscdevice mdev;
-       struct file_operations mdev_fops;
-
-       /* SPI driver */
-       struct spi_device *sdev;
-
-       /* SPI-GPIO driver */
-       struct spi_gpio_platform_data spi_gpio_pdata;
-       struct platform_device spi_gpio_pdev;
-};
-
-struct ucmb_message_hdr {
-       __le16 magic;           /* UCMB_MAGIC */
-       __le16 len;             /* Payload length (excluding header) */
-} __attribute__((packed));
-
-struct ucmb_message_footer {
-       __le16 crc;             /* CRC of the header + payload. */
-} __attribute__((packed));
-
-struct ucmb_status {
-       __le16 magic;           /* UCMB_MAGIC */
-       __le16 code;            /* enum ucmb_status_code */
-} __attribute__((packed));
-
-#define UCMB_MAGIC             0x1337
-#define UCMB_MAX_MSG_LEN       0x200
-
-enum ucmb_status_code {
-       UCMB_STAT_OK = 0,
-       UCMB_STAT_EPROTO,       /* Protocol format error */
-       UCMB_STAT_ENOMEM,       /* Out of memory */
-       UCMB_STAT_E2BIG,        /* Message too big */
-       UCMB_STAT_ECRC,         /* CRC error */
-};
-
-
-static int ucmb_spi_busnum_count = 1337;
-
-
-static struct ucmb_platform_data ucmb_list[] = {
-       { //FIXME don't define it here.
-               .name           = "ucmb",
-               .gpio_cs        = 3,
-               .gpio_sck       = 0,
-               .gpio_miso      = 1,
-               .gpio_mosi      = 2,
-               .mode           = SPI_MODE_0,
-               .max_speed_hz   = 128000, /* Hz */
-               .msg_delay_ms   = 1, /* mS */
-       },
-};
-
-
-static int __devinit ucmb_spi_probe(struct spi_device *sdev)
-{
-       return 0;
-}
-
-static int __devexit ucmb_spi_remove(struct spi_device *sdev)
-{
-       return 0;
-}
-
-static struct spi_driver ucmb_spi_driver = {
-       .driver         = {
-               .name   = "ucmb",
-               .bus    = &spi_bus_type,
-               .owner  = THIS_MODULE,
-       },
-       .probe          = ucmb_spi_probe,
-       .remove         = __devexit_p(ucmb_spi_remove),
-};
-
-static int ucmb_status_code_to_errno(enum ucmb_status_code code)
-{
-       switch (code) {
-       case UCMB_STAT_OK:
-               return 0;
-       case UCMB_STAT_EPROTO:
-               return -EPROTO;
-       case UCMB_STAT_ENOMEM:
-               return -ENOMEM;
-       case UCMB_STAT_E2BIG:
-               return -E2BIG;
-       case UCMB_STAT_ECRC:
-               return -EBADMSG;
-       }
-       return -EBUSY;
-}
-
-static inline struct ucmb * filp_to_ucmb(struct file *filp)
-{
-       return container_of(filp->f_op, struct ucmb, mdev_fops);
-}
-
-static ssize_t ucmb_read(struct file *filp, char __user *user_buf,
-                        size_t size, loff_t *offp)
-{
-       struct ucmb *ucmb = filp_to_ucmb(filp);
-       u8 *buf;
-       int res, err;
-       struct ucmb_message_hdr hdr;
-       struct ucmb_message_footer footer;
-       struct ucmb_status status = { .magic = cpu_to_le16(UCMB_MAGIC), };
-       u16 crc = 0xFFFF;
-
-       size = min_t(size_t, size, PAGE_SIZE);
-
-       err = -ENOMEM;
-       buf = (char *)__get_free_page(GFP_KERNEL);
-       if (!buf)
-               goto out;
-
-       err = spi_read(ucmb->sdev, (u8 *)&hdr, sizeof(hdr));
-       if (err)
-               goto out_free;
-#ifdef DEBUG
-       printk(KERN_DEBUG PFX "Received message header 0x%04X 0x%04X\n",
-              le16_to_cpu(hdr.magic), le16_to_cpu(hdr.len));
-#endif
-       err = -EPROTO;
-       if (hdr.magic != cpu_to_le16(UCMB_MAGIC))
-               goto out_free;
-       err = -ENOBUFS;
-       if (size < le16_to_cpu(hdr.len))
-               goto out_free;
-       size = le16_to_cpu(hdr.len);
-       err = spi_read(ucmb->sdev, buf, size);
-       if (err)
-               goto out_free;
-       err = spi_read(ucmb->sdev, (u8 *)&footer, sizeof(footer));
-       if (err)
-               goto out_free;
-
-       crc = crc16(crc, &hdr, sizeof(hdr));
-       crc = crc16(crc, buf, size);
-       crc ^= 0xFFFF;
-       if (crc != le16_to_cpu(footer.crc)) {
-               err = -EPROTO;
-               status.code = UCMB_STAT_ECRC;
-               goto out_send_status;
-       }
-
-       if (copy_to_user(user_buf, buf, size)) {
-               err = -EFAULT;
-               status.code = UCMB_STAT_ENOMEM;
-               goto out_send_status;
-       }
-
-       status.code = UCMB_STAT_OK;
-       err = 0;
-
-out_send_status:
-       res = spi_write(ucmb->sdev, (u8 *)&status, sizeof(status));
-       if (res && !err)
-               err = res;
-out_free:
-       free_page((unsigned long)buf);
-out:
-       return err ? err : size;
-}
-
-static ssize_t ucmb_write(struct file *filp, const char __user *user_buf,
-                         size_t size, loff_t *offp)
-{
-       struct ucmb *ucmb = filp_to_ucmb(filp);
-       u8 *buf;
-       int err;
-       struct ucmb_message_hdr hdr = { .magic = cpu_to_le16(UCMB_MAGIC), };
-       struct ucmb_message_footer footer = { .crc = 0xFFFF, };
-       struct ucmb_status status;
-       struct spi_transfer spi_hdr_xfer;
-       struct spi_transfer spi_footer_xfer;
-       struct spi_transfer spi_data_xfer;
-       struct spi_message spi_msg;
-
-       err = -ENOMEM;
-       buf = (char *)__get_free_page(GFP_KERNEL);
-       if (!buf)
-               goto out;
-
-       size = min_t(size_t, PAGE_SIZE, size);
-       size = min_t(size_t, UCMB_MAX_MSG_LEN, size);
-       err = -EFAULT;
-       if (copy_from_user(buf, user_buf, size))
-               goto out_free;
-       hdr.len = cpu_to_le16(size);
-
-       footer.crc = crc16(footer.crc, &hdr, sizeof(hdr));
-       footer.crc = crc16(footer.crc, buf, size);
-       footer.crc ^= 0xFFFF;
-
-       spi_message_init(&spi_msg);
-
-       memset(&spi_hdr_xfer, 0, sizeof(spi_hdr_xfer));
-       spi_hdr_xfer.tx_buf = &hdr;
-       spi_hdr_xfer.len = sizeof(hdr);
-       spi_message_add_tail(&spi_hdr_xfer, &spi_msg);
-
-       memset(&spi_data_xfer, 0, sizeof(spi_data_xfer));
-       spi_data_xfer.tx_buf = buf;
-       spi_data_xfer.len = size;
-       spi_message_add_tail(&spi_data_xfer, &spi_msg);
-
-       memset(&spi_footer_xfer, 0, sizeof(spi_footer_xfer));
-       spi_footer_xfer.tx_buf = &footer;
-       spi_footer_xfer.len = sizeof(footer);
-       spi_message_add_tail(&spi_footer_xfer, &spi_msg);
-
-       /* Send the message, including header. */
-       err = spi_sync(ucmb->sdev, &spi_msg);
-       if (err)
-               goto out_free;
-
-       /* The microcontroller deserves some time to process the message. */
-       if (ucmb->msg_delay_ms)
-               msleep(ucmb->msg_delay_ms);
-
-       /* Get the status code. */
-       err = spi_read(ucmb->sdev, (u8 *)&status, sizeof(status));
-       if (err)
-               goto out_free;
-#ifdef DEBUG
-       printk(KERN_DEBUG PFX "Sent message. Status report: 0x%04X 0x%04X\n",
-              le16_to_cpu(status.magic), le16_to_cpu(status.code));
-#endif
-       err = -EPROTO;
-       if (status.magic != cpu_to_le16(UCMB_MAGIC))
-               goto out_free;
-       err = ucmb_status_code_to_errno(le16_to_cpu(status.code));
-       if (err)
-               goto out_free;
-
-out_free:
-       free_page((unsigned long)buf);
-out:
-       return err ? err : size;
-}
-
-static int __devinit ucmb_probe(struct platform_device *pdev)
-{
-       struct ucmb_platform_data *pdata;
-       struct ucmb *ucmb;
-       int err;
-       const int bus_num = ucmb_spi_busnum_count++;
-       struct spi_bitbang *bb;
-
-       pdata = pdev->dev.platform_data;
-       if (!pdata)
-               return -ENXIO;
-
-       ucmb = kzalloc(sizeof(struct ucmb), GFP_KERNEL);
-       if (!ucmb)
-               return -ENOMEM;
-       ucmb->msg_delay_ms = pdata->msg_delay_ms;
-
-       /* Create the SPI GPIO bus master. */
-
-#ifdef CONFIG_SPI_GPIO_MODULE
-       err = request_module("spi_gpio");
-       if (err)
-               printk(KERN_WARNING PFX "Failed to request spi_gpio module\n");
-#endif /* CONFIG_SPI_GPIO_MODULE */
-
-       ucmb->spi_gpio_pdata.sck = pdata->gpio_sck;
-       ucmb->spi_gpio_pdata.mosi = pdata->gpio_mosi;
-       ucmb->spi_gpio_pdata.miso = pdata->gpio_miso;
-       ucmb->spi_gpio_pdata.num_chipselect = 1;
-
-       ucmb->spi_gpio_pdev.name = "spi_gpio";
-       ucmb->spi_gpio_pdev.id = bus_num;
-       ucmb->spi_gpio_pdev.dev.platform_data = &ucmb->spi_gpio_pdata;
-
-       err = platform_device_register(&ucmb->spi_gpio_pdev);
-       if (err) {
-               printk(KERN_ERR PFX "Failed to register SPI-GPIO platform device\n");
-               goto err_free_ucmb;
-       }
-       bb = platform_get_drvdata(&ucmb->spi_gpio_pdev);
-       if (!bb || !bb->master) {
-               printk(KERN_ERR PFX "No bitbanged master device found.\n");
-               goto err_unreg_spi_gpio_pdev;
-       }
-
-       /* Create the SPI device. */
-
-       ucmb->sdev = spi_alloc_device(bb->master);
-       if (!ucmb->sdev) {
-               printk(KERN_ERR PFX "Failed to allocate SPI device\n");
-               goto err_unreg_spi_gpio_pdev;
-       }
-       ucmb->sdev->max_speed_hz = pdata->max_speed_hz;
-       ucmb->sdev->chip_select = 0;
-       ucmb->sdev->mode = pdata->mode;
-       strlcpy(ucmb->sdev->modalias, "ucmb", /* We are the SPI driver. */
-               sizeof(ucmb->sdev->modalias));
-       ucmb->sdev->controller_data = (void *)pdata->gpio_cs;
-       err = spi_add_device(ucmb->sdev);
-       if (err) {
-               printk(KERN_ERR PFX "Failed to add SPI device\n");
-               goto err_free_spi_device;
-       }
-
-       /* Create the Misc char device. */
-
-       ucmb->mdev.minor = MISC_DYNAMIC_MINOR;
-       ucmb->mdev.name = pdata->name;
-       ucmb->mdev.parent = &pdev->dev;
-       ucmb->mdev_fops.read = ucmb_read;
-       ucmb->mdev_fops.write = ucmb_write;
-       ucmb->mdev.fops = &ucmb->mdev_fops;
-
-       err = misc_register(&ucmb->mdev);
-       if (err) {
-               printk(KERN_ERR PFX "Failed to register miscdev %s\n",
-                      ucmb->mdev.name);
-               goto err_unreg_spi_device;
-       }
-
-       platform_set_drvdata(pdev, ucmb);
-
-       printk(KERN_INFO PFX "Registered message bus \"%s\"\n", pdata->name);
-
-       return 0;
-
-err_unreg_spi_device:
-       spi_unregister_device(ucmb->sdev);
-err_free_spi_device:
-       spi_dev_put(ucmb->sdev);
-err_unreg_spi_gpio_pdev:
-       platform_device_unregister(&ucmb->spi_gpio_pdev);
-err_free_ucmb:
-       kfree(ucmb);
-
-       return err;
-}
-
-static int __devexit ucmb_remove(struct platform_device *pdev)
-{
-       struct ucmb *ucmb = platform_get_drvdata(pdev);
-       int err;
-
-       err = misc_deregister(&ucmb->mdev);
-       if (err) {
-               printk(KERN_ERR PFX "Failed to unregister miscdev %s\n",
-                      ucmb->mdev.name);
-       }
-       spi_unregister_device(ucmb->sdev);
-       spi_dev_put(ucmb->sdev);
-       platform_device_unregister(&ucmb->spi_gpio_pdev);
-
-       kfree(ucmb);
-       platform_set_drvdata(pdev, NULL);
-
-       return 0;
-}
-
-static struct platform_driver ucmb_driver = {
-       .driver         = {
-               .name   = "ucmb",
-               .owner  = THIS_MODULE,
-       },
-       .probe          = ucmb_probe,
-       .remove         = __devexit_p(ucmb_probe),
-};
-
-static int ucmb_modinit(void)
-{
-       struct ucmb_platform_data *pdata;
-       struct platform_device *pdev;
-       int err, i;
-
-       printk(KERN_INFO "Microcontroller message bus driver\n");
-
-       err = platform_driver_register(&ucmb_driver);
-       if (err) {
-               printk(KERN_ERR PFX "Failed to register platform driver\n");
-               return err;
-       }
-       err = spi_register_driver(&ucmb_spi_driver);
-       if (err) {
-               printk(KERN_ERR PFX "Failed to register SPI driver\n");
-               platform_driver_unregister(&ucmb_driver);
-               return err;
-       }
-
-       for (i = 0; i < ARRAY_SIZE(ucmb_list); i++) {
-               pdata = &ucmb_list[i];
-
-               pdev = platform_device_alloc("ucmb", i);
-               if (!pdev) {
-                       printk(KERN_ERR PFX "Failed to allocate platform device.\n");
-                       break;
-               }
-               err = platform_device_add_data(pdev, pdata, sizeof(*pdata));
-               if (err) {
-                       printk(KERN_ERR PFX "Failed to add platform data.\n");
-                       platform_device_put(pdev);
-                       break;
-               }
-               err = platform_device_add(pdev);
-               if (err) {
-                       printk(KERN_ERR PFX "Failed to register platform device.\n");
-                       platform_device_put(pdev);
-                       break;
-               }
-               pdata->pdev = pdev;
-       }
-
-       return 0;
-}
-module_init(ucmb_modinit);
-
-static void ucmb_modexit(void)
-{
-       struct ucmb_platform_data *pdata;
-       int i;
-
-       for (i = 0; i < ARRAY_SIZE(ucmb_list); i++) {
-               pdata = &ucmb_list[i];
-
-               if (pdata->pdev) {
-                       platform_device_unregister(pdata->pdev);
-                       platform_device_put(pdata->pdev);
-               }
-       }
-       spi_unregister_driver(&ucmb_spi_driver);
-       platform_driver_unregister(&ucmb_driver);
-}
-module_exit(ucmb_modexit);
diff --git a/package/ucmb/driver/ucmb.h b/package/ucmb/driver/ucmb.h
deleted file mode 100644 (file)
index 94fdc64..0000000
+++ /dev/null
@@ -1,38 +0,0 @@
-#ifndef LINUX_UCMB_H_
-#define LINUX_UCMB_H_
-
-#include <linux/types.h>
-
-/**
- * struct ucmb_platform_data - UCMB device descriptor
- *
- * @name:              The name of the device. This will also be the name of
- *                     the misc char device.
- *
- * @gpio_cs:           The chipselect GPIO pin. Can be SPI_GPIO_NO_CHIPSELECT.
- * @gpio_sck:          The clock GPIO pin.
- * @gpio_miso:         The master-in slave-out GPIO pin.
- * @gpio_mosi:         The master-out slave-in GPIO pin.
- *
- * @mode:              The SPI bus mode. SPI_MODE_*
- * @max_speed_hz:      The bus speed, in Hz. If zero the speed is not limited.
- * @msg_delay_ms:      The message delay time, in milliseconds.
- *                     This is the time the microcontroller takes to process
- *                     one message.
- */
-struct ucmb_platform_data {
-       const char *name;
-
-       unsigned long gpio_cs;
-       unsigned int gpio_sck;
-       unsigned int gpio_miso;
-       unsigned int gpio_mosi;
-
-       u8 mode;
-       u32 max_speed_hz;
-       unsigned int msg_delay_ms;
-
-       struct platform_device *pdev; /* internal */
-};
-
-#endif /* LINUX_UCMB_H_ */