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authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/drivers/net/can/sja1000/ems_pcmcia.c
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure.
Diffstat (limited to 'ANDROID_3.4.5/drivers/net/can/sja1000/ems_pcmcia.c')
-rw-r--r--ANDROID_3.4.5/drivers/net/can/sja1000/ems_pcmcia.c331
1 files changed, 0 insertions, 331 deletions
diff --git a/ANDROID_3.4.5/drivers/net/can/sja1000/ems_pcmcia.c b/ANDROID_3.4.5/drivers/net/can/sja1000/ems_pcmcia.c
deleted file mode 100644
index 075a5457..00000000
--- a/ANDROID_3.4.5/drivers/net/can/sja1000/ems_pcmcia.c
+++ /dev/null
@@ -1,331 +0,0 @@
-/*
- * Copyright (C) 2008 Sebastian Haas (initial chardev implementation)
- * Copyright (C) 2010 Markus Plessing <plessing@ems-wuensche.com>
- * Rework for mainline by Oliver Hartkopp <socketcan@hartkopp.net>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the version 2 of the GNU General Public License
- * as published by the Free Software Foundation
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/netdevice.h>
-#include <linux/delay.h>
-#include <linux/io.h>
-#include <pcmcia/cistpl.h>
-#include <pcmcia/ds.h>
-#include <linux/can.h>
-#include <linux/can/dev.h>
-#include "sja1000.h"
-
-#define DRV_NAME "ems_pcmcia"
-
-MODULE_AUTHOR("Markus Plessing <plessing@ems-wuensche.com>");
-MODULE_DESCRIPTION("Socket-CAN driver for EMS CPC-CARD cards");
-MODULE_SUPPORTED_DEVICE("EMS CPC-CARD CAN card");
-MODULE_LICENSE("GPL v2");
-
-#define EMS_PCMCIA_MAX_CHAN 2
-
-struct ems_pcmcia_card {
- int channels;
- struct pcmcia_device *pcmcia_dev;
- struct net_device *net_dev[EMS_PCMCIA_MAX_CHAN];
- void __iomem *base_addr;
-};
-
-#define EMS_PCMCIA_CAN_CLOCK (16000000 / 2)
-
-/*
- * The board configuration is probably following:
- * RX1 is connected to ground.
- * TX1 is not connected.
- * CLKO is not connected.
- * Setting the OCR register to 0xDA is a good idea.
- * This means normal output mode , push-pull and the correct polarity.
- */
-#define EMS_PCMCIA_OCR (OCR_TX0_PUSHPULL | OCR_TX1_PUSHPULL)
-
-/*
- * In the CDR register, you should set CBP to 1.
- * You will probably also want to set the clock divider value to 7
- * (meaning direct oscillator output) because the second SJA1000 chip
- * is driven by the first one CLKOUT output.
- */
-#define EMS_PCMCIA_CDR (CDR_CBP | CDR_CLKOUT_MASK)
-#define EMS_PCMCIA_MEM_SIZE 4096 /* Size of the remapped io-memory */
-#define EMS_PCMCIA_CAN_BASE_OFFSET 0x100 /* Offset where controllers starts */
-#define EMS_PCMCIA_CAN_CTRL_SIZE 0x80 /* Memory size for each controller */
-
-#define EMS_CMD_RESET 0x00 /* Perform a reset of the card */
-#define EMS_CMD_MAP 0x03 /* Map CAN controllers into card' memory */
-#define EMS_CMD_UMAP 0x02 /* Unmap CAN controllers from card' memory */
-
-static struct pcmcia_device_id ems_pcmcia_tbl[] = {
- PCMCIA_DEVICE_PROD_ID123("EMS_T_W", "CPC-Card", "V2.0", 0xeab1ea23,
- 0xa338573f, 0xe4575800),
- PCMCIA_DEVICE_NULL,
-};
-
-MODULE_DEVICE_TABLE(pcmcia, ems_pcmcia_tbl);
-
-static u8 ems_pcmcia_read_reg(const struct sja1000_priv *priv, int port)
-{
- return readb(priv->reg_base + port);
-}
-
-static void ems_pcmcia_write_reg(const struct sja1000_priv *priv, int port,
- u8 val)
-{
- writeb(val, priv->reg_base + port);
-}
-
-static irqreturn_t ems_pcmcia_interrupt(int irq, void *dev_id)
-{
- struct ems_pcmcia_card *card = dev_id;
- struct net_device *dev;
- irqreturn_t retval = IRQ_NONE;
- int i, again;
-
- /* Card not present */
- if (readw(card->base_addr) != 0xAA55)
- return IRQ_HANDLED;
-
- do {
- again = 0;
-
- /* Check interrupt for each channel */
- for (i = 0; i < card->channels; i++) {
- dev = card->net_dev[i];
- if (!dev)
- continue;
-
- if (sja1000_interrupt(irq, dev) == IRQ_HANDLED)
- again = 1;
- }
- /* At least one channel handled the interrupt */
- if (again)
- retval = IRQ_HANDLED;
-
- } while (again);
-
- return retval;
-}
-
-/*
- * Check if a CAN controller is present at the specified location
- * by trying to set 'em into the PeliCAN mode
- */
-static inline int ems_pcmcia_check_chan(struct sja1000_priv *priv)
-{
- /* Make sure SJA1000 is in reset mode */
- ems_pcmcia_write_reg(priv, REG_MOD, 1);
- ems_pcmcia_write_reg(priv, REG_CDR, CDR_PELICAN);
-
- /* read reset-values */
- if (ems_pcmcia_read_reg(priv, REG_CDR) == CDR_PELICAN)
- return 1;
-
- return 0;
-}
-
-static void ems_pcmcia_del_card(struct pcmcia_device *pdev)
-{
- struct ems_pcmcia_card *card = pdev->priv;
- struct net_device *dev;
- int i;
-
- free_irq(pdev->irq, card);
-
- for (i = 0; i < card->channels; i++) {
- dev = card->net_dev[i];
- if (!dev)
- continue;
-
- printk(KERN_INFO "%s: removing %s on channel #%d\n",
- DRV_NAME, dev->name, i);
- unregister_sja1000dev(dev);
- free_sja1000dev(dev);
- }
-
- writeb(EMS_CMD_UMAP, card->base_addr);
- iounmap(card->base_addr);
- kfree(card);
-
- pdev->priv = NULL;
-}
-
-/*
- * Probe PCI device for EMS CAN signature and register each available
- * CAN channel to SJA1000 Socket-CAN subsystem.
- */
-static int __devinit ems_pcmcia_add_card(struct pcmcia_device *pdev,
- unsigned long base)
-{
- struct sja1000_priv *priv;
- struct net_device *dev;
- struct ems_pcmcia_card *card;
- int err, i;
-
- /* Allocating card structures to hold addresses, ... */
- card = kzalloc(sizeof(struct ems_pcmcia_card), GFP_KERNEL);
- if (!card)
- return -ENOMEM;
-
- pdev->priv = card;
- card->channels = 0;
-
- card->base_addr = ioremap(base, EMS_PCMCIA_MEM_SIZE);
- if (!card->base_addr) {
- err = -ENOMEM;
- goto failure_cleanup;
- }
-
- /* Check for unique EMS CAN signature */
- if (readw(card->base_addr) != 0xAA55) {
- err = -ENODEV;
- goto failure_cleanup;
- }
-
- /* Request board reset */
- writeb(EMS_CMD_RESET, card->base_addr);
-
- /* Make sure CAN controllers are mapped into card's memory space */
- writeb(EMS_CMD_MAP, card->base_addr);
-
- /* Detect available channels */
- for (i = 0; i < EMS_PCMCIA_MAX_CHAN; i++) {
- dev = alloc_sja1000dev(0);
- if (!dev) {
- err = -ENOMEM;
- goto failure_cleanup;
- }
-
- card->net_dev[i] = dev;
- priv = netdev_priv(dev);
- priv->priv = card;
- SET_NETDEV_DEV(dev, &pdev->dev);
-
- priv->irq_flags = IRQF_SHARED;
- dev->irq = pdev->irq;
- priv->reg_base = card->base_addr + EMS_PCMCIA_CAN_BASE_OFFSET +
- (i * EMS_PCMCIA_CAN_CTRL_SIZE);
-
- /* Check if channel is present */
- if (ems_pcmcia_check_chan(priv)) {
- priv->read_reg = ems_pcmcia_read_reg;
- priv->write_reg = ems_pcmcia_write_reg;
- priv->can.clock.freq = EMS_PCMCIA_CAN_CLOCK;
- priv->ocr = EMS_PCMCIA_OCR;
- priv->cdr = EMS_PCMCIA_CDR;
- priv->flags |= SJA1000_CUSTOM_IRQ_HANDLER;
-
- /* Register SJA1000 device */
- err = register_sja1000dev(dev);
- if (err) {
- free_sja1000dev(dev);
- goto failure_cleanup;
- }
-
- card->channels++;
-
- printk(KERN_INFO "%s: registered %s on channel "
- "#%d at 0x%p, irq %d\n", DRV_NAME, dev->name,
- i, priv->reg_base, dev->irq);
- } else
- free_sja1000dev(dev);
- }
-
- err = request_irq(dev->irq, &ems_pcmcia_interrupt, IRQF_SHARED,
- DRV_NAME, card);
- if (!err)
- return 0;
-
-failure_cleanup:
- ems_pcmcia_del_card(pdev);
- return err;
-}
-
-/*
- * Setup PCMCIA socket and probe for EMS CPC-CARD
- */
-static int __devinit ems_pcmcia_probe(struct pcmcia_device *dev)
-{
- int csval;
-
- /* General socket configuration */
- dev->config_flags |= CONF_ENABLE_IRQ;
- dev->config_index = 1;
- dev->config_regs = PRESENT_OPTION;
-
- /* The io structure describes IO port mapping */
- dev->resource[0]->end = 16;
- dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
- dev->resource[1]->end = 16;
- dev->resource[1]->flags |= IO_DATA_PATH_WIDTH_16;
- dev->io_lines = 5;
-
- /* Allocate a memory window */
- dev->resource[2]->flags =
- (WIN_DATA_WIDTH_8 | WIN_MEMORY_TYPE_CM | WIN_ENABLE);
- dev->resource[2]->start = dev->resource[2]->end = 0;
-
- csval = pcmcia_request_window(dev, dev->resource[2], 0);
- if (csval) {
- dev_err(&dev->dev, "pcmcia_request_window failed (err=%d)\n",
- csval);
- return 0;
- }
-
- csval = pcmcia_map_mem_page(dev, dev->resource[2], dev->config_base);
- if (csval) {
- dev_err(&dev->dev, "pcmcia_map_mem_page failed (err=%d)\n",
- csval);
- return 0;
- }
-
- csval = pcmcia_enable_device(dev);
- if (csval) {
- dev_err(&dev->dev, "pcmcia_enable_device failed (err=%d)\n",
- csval);
- return 0;
- }
-
- ems_pcmcia_add_card(dev, dev->resource[2]->start);
- return 0;
-}
-
-/*
- * Release claimed resources
- */
-static void ems_pcmcia_remove(struct pcmcia_device *dev)
-{
- ems_pcmcia_del_card(dev);
- pcmcia_disable_device(dev);
-}
-
-static struct pcmcia_driver ems_pcmcia_driver = {
- .name = DRV_NAME,
- .probe = ems_pcmcia_probe,
- .remove = ems_pcmcia_remove,
- .id_table = ems_pcmcia_tbl,
-};
-
-static int __init ems_pcmcia_init(void)
-{
- return pcmcia_register_driver(&ems_pcmcia_driver);
-}
-module_init(ems_pcmcia_init);
-
-static void __exit ems_pcmcia_exit(void)
-{
- pcmcia_unregister_driver(&ems_pcmcia_driver);
-}
-module_exit(ems_pcmcia_exit);