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Message-Id: <533406c982030df7f29804c149e283f74f924926.1269847733.git.joe@perches.com>
Date: Mon, 29 Mar 2010 00:34:30 -0700
From: Joe Perches <joe@...ches.com>
To: devel@...verdev.osuosl.org
Cc: Simon Horman <horms@...ge.net.au>,
Jason Baldus <jason.baldus@...il.com>,
Greg KH <gregkh@...e.de>, Scott Smedley <ss@....gov.au>,
Harley Sweeten <hsweeten@...ionengravers.com>,
linux-kernel@...r.kernel.org
Subject: [PATCH 3/3] drivers/staging/dt3155: Remove old files
That have been integrated into dt3155_main.c
Signed-off-by: Joe Perches <joe@...ches.com>
---
drivers/staging/dt3155/dt3155_drv.c | 1095 -----------------------------------
drivers/staging/dt3155/dt3155_drv.h | 45 --
drivers/staging/dt3155/dt3155_io.c | 175 ------
drivers/staging/dt3155/dt3155_isr.c | 516 -----------------
drivers/staging/dt3155/dt3155_isr.h | 77 ---
5 files changed, 0 insertions(+), 1908 deletions(-)
delete mode 100644 drivers/staging/dt3155/dt3155_drv.c
delete mode 100644 drivers/staging/dt3155/dt3155_drv.h
delete mode 100644 drivers/staging/dt3155/dt3155_io.c
delete mode 100644 drivers/staging/dt3155/dt3155_isr.c
delete mode 100644 drivers/staging/dt3155/dt3155_isr.h
diff --git a/drivers/staging/dt3155/dt3155_drv.c b/drivers/staging/dt3155/dt3155_drv.c
deleted file mode 100644
index a67c622..0000000
--- a/drivers/staging/dt3155/dt3155_drv.c
+++ /dev/null
@@ -1,1095 +0,0 @@
-/*
-
-Copyright 1996,2002,2005 Gregory D. Hager, Alfred A. Rizzi, Noah J. Cowan,
- Jason Lapenta, Scott Smedley, Greg Sharp
-
-This file is part of the DT3155 Device Driver.
-
-The DT3155 Device Driver is free software; you can redistribute it
-and/or modify it under the terms of the GNU General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
-
-The DT3155 Device Driver 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.
-
-You should have received a copy of the GNU General Public License
-along with the DT3155 Device Driver; if not, write to the Free
-Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
-MA 02111-1307 USA
-
--- Changes --
-
- Date Programmer Description of changes made
- -------------------------------------------------------------------
- 03-Jul-2000 JML n/a
- 10-Oct-2001 SS port to 2.4 kernel
- 02-Apr-2002 SS Mods to use allocator as a standalone module;
- Merged John Roll's changes (john@....harvard.edu)
- to make work with multiple boards.
- 02-Jul-2002 SS Merged James Rose's chages (rosejr@...due.edu) to:
- * fix successive interrupt-driven captures
- * add select/poll support.
- 10-Jul-2002 GCS Add error check when ndevices > MAXBOARDS.
- 02-Aug-2002 GCS Fix field mode so that odd (lower) field is stored
- in lower half of buffer.
- 05-Aug-2005 SS port to 2.6 kernel.
- 26-Oct-2009 SS port to 2.6.30 kernel.
-
--- Notes --
-
-** appended "mem=124" in lilo.conf to allow for 4megs free on my 128meg system.
- * using allocator.c and allocator.h from o'reilly book (alessandro rubini)
- ftp://ftp.systemy.it/pub/develop (see README.allocator)
-
- + might want to get rid of MAXboards for allocating initial buffer.
- confusing and not necessary
-
- + in cleanup_module the MOD_IN_USE looks like it is check after it should
-
- * GFP_DMA should not be set with a PCI system (pg 291)
-
- - NJC why are only two buffers allowed? (see isr, approx line 358)
-
-*/
-
-extern void printques(int);
-
-#ifdef MODULE
-#include <linux/module.h>
-#include <linux/interrupt.h>
-
-
-MODULE_LICENSE("GPL");
-
-#endif
-
-#ifndef CONFIG_PCI
-#error "DT3155 : Kernel PCI support not enabled (DT3155 drive requires PCI)"
-#endif
-
-#include <linux/pci.h>
-#include <linux/types.h>
-#include <linux/poll.h>
-#include <linux/sched.h>
-
-#include <asm/io.h>
-#include <asm/uaccess.h>
-
-#include "dt3155.h"
-#include "dt3155_drv.h"
-#include "dt3155_isr.h"
-#include "dt3155_io.h"
-#include "allocator.h"
-
-/* Error variable. Zero means no error. */
-int dt3155_errno = 0;
-
-#ifndef PCI_DEVICE_ID_INTEL_7116
-#define PCI_DEVICE_ID_INTEL_7116 0x1223
-#endif
-
-#define DT3155_VENDORID PCI_VENDOR_ID_INTEL
-#define DT3155_DEVICEID PCI_DEVICE_ID_INTEL_7116
-#define MAXPCI 16
-
-#ifdef DT_DEBUG
-#define DT_3155_DEBUG_MSG(x,y) printk(x,y)
-#else
-#define DT_3155_DEBUG_MSG(x,y)
-#endif
-
-/* wait queue for interrupts */
-wait_queue_head_t dt3155_read_wait_queue[ MAXBOARDS ];
-
-#define DT_3155_SUCCESS 0
-#define DT_3155_FAILURE -EIO
-
-/* set to dynamicaly allocate, but it is tunable: */
-/* insmod DT_3155 dt3155 dt3155_major=XX */
-int dt3155_major = 0;
-
-/* The minor numbers are 0 and 1 ... they are not tunable.
- * They are used as the indices for the structure vectors,
- * and register address vectors
- */
-
-/* Global structures and variables */
-
-/* Status of each device */
-struct dt3155_status_s dt3155_status[ MAXBOARDS ];
-
-/* kernel logical address of the board */
-u8 *dt3155_lbase[ MAXBOARDS ] = { NULL
-#if MAXBOARDS == 2
- , NULL
-#endif
-};
-/* DT3155 registers */
-u8 *dt3155_bbase = NULL; /* kernel logical address of the *
- * buffer region */
-u32 dt3155_dev_open[ MAXBOARDS ] = {0
-#if MAXBOARDS == 2
- , 0
-#endif
-};
-
-u32 ndevices = 0;
-u32 unique_tag = 0;;
-
-
-/*
- * Stops interrupt generation right away and resets the status
- * to idle. I don't know why this works and the other way doesn't.
- * (James Rose)
- */
-static void quick_stop (int minor)
-{
- // TODO: scott was here
-#if 1
- ReadMReg((dt3155_lbase[ minor ] + INT_CSR), int_csr_r.reg);
- /* disable interrupts */
- int_csr_r.fld.FLD_END_EVE_EN = 0;
- int_csr_r.fld.FLD_END_ODD_EN = 0;
- WriteMReg((dt3155_lbase[ minor ] + INT_CSR), int_csr_r.reg );
-
- dt3155_status[ minor ].state &= ~(DT3155_STATE_STOP|0xff);
- /* mark the system stopped: */
- dt3155_status[ minor ].state |= DT3155_STATE_IDLE;
- dt3155_fbuffer[ minor ]->stop_acquire = 0;
- dt3155_fbuffer[ minor ]->even_stopped = 0;
-#else
- dt3155_status[minor].state |= DT3155_STATE_STOP;
- dt3155_status[minor].fbuffer.stop_acquire = 1;
-#endif
-
-}
-
-
-/*****************************************************
- * dt3155_isr() Interrupt service routien
- *
- * - looks like this isr supports IRQ sharing (or could) JML
- * - Assumes irq's are disabled, via SA_INTERRUPT flag
- * being set in request_irq() call from init_module()
- *****************************************************/
-static inline void dt3155_isr( int irq, void *dev_id, struct pt_regs *regs )
-{
- int minor = -1;
- int index;
- unsigned long flags;
- u32 buffer_addr;
-
- /* find out who issued the interrupt */
- for ( index = 0; index < ndevices; index++ ) {
- if( dev_id == (void*) &dt3155_status[ index ])
- {
- minor = index;
- break;
- }
- }
-
- /* hopefully we should not get here */
- if ( minor < 0 || minor >= MAXBOARDS ) {
- printk(KERN_ERR "dt3155_isr called with invalid dev_id\n");
- return;
- }
-
- /* Check for corruption and set a flag if so */
- ReadMReg( (dt3155_lbase[ minor ] + CSR1), csr1_r.reg );
-
- if ( (csr1_r.fld.FLD_CRPT_EVE) || (csr1_r.fld.FLD_CRPT_ODD) )
- {
- /* TODO: this should probably stop acquisition */
- /* and set some flags so that dt3155_read */
- /* returns an error next time it is called */
- dt3155_errno = DT_ERR_CORRUPT;
- printk("dt3155: corrupt field\n");
- return;
- }
-
- ReadMReg((dt3155_lbase[ minor ] + INT_CSR), int_csr_r.reg);
-
- /* Handle the even field ... */
- if (int_csr_r.fld.FLD_END_EVE)
- {
- if ( (dt3155_status[ minor ].state & DT3155_STATE_MODE) ==
- DT3155_STATE_FLD )
- {
- dt3155_fbuffer[ minor ]->frame_count++;
- }
-
- ReadI2C(dt3155_lbase[ minor ], EVEN_CSR, &i2c_even_csr.reg);
-
- /* Clear the interrupt? */
- int_csr_r.fld.FLD_END_EVE = 1;
-
- /* disable the interrupt if last field */
- if (dt3155_fbuffer[ minor ]->stop_acquire)
- {
- printk("dt3155: even stopped.\n");
- dt3155_fbuffer[ minor ]->even_stopped = 1;
- if (i2c_even_csr.fld.SNGL_EVE)
- {
- int_csr_r.fld.FLD_END_EVE_EN = 0;
- }
- else
- {
- i2c_even_csr.fld.SNGL_EVE = 1;
- }
- }
-
- WriteMReg( (dt3155_lbase[ minor ] + INT_CSR), int_csr_r.reg );
-
- /* Set up next DMA if we are doing FIELDS */
- if ( (dt3155_status[ minor ].state & DT3155_STATE_MODE ) ==
- DT3155_STATE_FLD)
- {
- /* GCS (Aug 2, 2002) -- In field mode, dma the odd field
- into the lower half of the buffer */
- const u32 stride = dt3155_status[ minor ].config.cols;
- buffer_addr = dt3155_fbuffer[ minor ]->
- frame_info[ dt3155_fbuffer[ minor ]->active_buf ].addr
- + (DT3155_MAX_ROWS / 2) * stride;
- local_save_flags(flags);
- local_irq_disable();
- wake_up_interruptible( &dt3155_read_wait_queue[ minor ] );
-
- /* Set up the DMA address for the next field */
- local_irq_restore(flags);
- WriteMReg((dt3155_lbase[ minor ] + ODD_DMA_START), buffer_addr);
- }
-
- /* Check for errors. */
- i2c_even_csr.fld.DONE_EVE = 1;
- if ( i2c_even_csr.fld.ERROR_EVE )
- dt3155_errno = DT_ERR_OVERRUN;
-
- WriteI2C( dt3155_lbase[ minor ], EVEN_CSR, i2c_even_csr.reg );
-
- /* Note that we actually saw an even field meaning */
- /* that subsequent odd field complete the frame */
- dt3155_fbuffer[ minor ]->even_happened = 1;
-
- /* recording the time that the even field finished, this should be */
- /* about time in the middle of the frame */
- do_gettimeofday( &(dt3155_fbuffer[ minor ]->
- frame_info[ dt3155_fbuffer[ minor ]->
- active_buf ].time) );
- return;
- }
-
- /* ... now handle the odd field */
- if ( int_csr_r.fld.FLD_END_ODD )
- {
- ReadI2C( dt3155_lbase[ minor ], ODD_CSR, &i2c_odd_csr.reg );
-
- /* Clear the interrupt? */
- int_csr_r.fld.FLD_END_ODD = 1;
-
- if (dt3155_fbuffer[ minor ]->even_happened ||
- (dt3155_status[ minor ].state & DT3155_STATE_MODE) ==
- DT3155_STATE_FLD)
- {
- dt3155_fbuffer[ minor ]->frame_count++;
- }
-
- if ( dt3155_fbuffer[ minor ]->stop_acquire &&
- dt3155_fbuffer[ minor ]->even_stopped )
- {
- printk(KERN_DEBUG "dt3155: stopping odd..\n");
- if ( i2c_odd_csr.fld.SNGL_ODD )
- {
- /* disable interrupts */
- int_csr_r.fld.FLD_END_ODD_EN = 0;
- dt3155_status[ minor ].state &= ~(DT3155_STATE_STOP|0xff);
-
- /* mark the system stopped: */
- dt3155_status[ minor ].state |= DT3155_STATE_IDLE;
- dt3155_fbuffer[ minor ]->stop_acquire = 0;
- dt3155_fbuffer[ minor ]->even_stopped = 0;
-
- printk(KERN_DEBUG "dt3155: state is now %x\n",
- dt3155_status[minor].state);
- }
- else
- {
- i2c_odd_csr.fld.SNGL_ODD = 1;
- }
- }
-
- WriteMReg( (dt3155_lbase[ minor ] + INT_CSR), int_csr_r.reg );
-
- /* if the odd field has been acquired, then */
- /* change the next dma location for both fields */
- /* and wake up the process if sleeping */
- if ( dt3155_fbuffer[ minor ]->even_happened ||
- (dt3155_status[ minor ].state & DT3155_STATE_MODE) ==
- DT3155_STATE_FLD )
- {
-
- local_save_flags(flags);
- local_irq_disable();
-
-#ifdef DEBUG_QUES_B
- printques( minor );
-#endif
- if ( dt3155_fbuffer[ minor ]->nbuffers > 2 )
- {
- if ( !are_empty_buffers( minor ) )
- {
- /* The number of active + locked buffers is
- * at most 2, and since there are none empty, there
- * must be at least nbuffers-2 ready buffers.
- * This is where we 'drop frames', oldest first. */
- push_empty( pop_ready( minor ), minor );
- }
-
- /* The ready_que can't be full, since we know
- * there is one active buffer right now, so it's safe
- * to push the active buf on the ready_que. */
- push_ready( minor, dt3155_fbuffer[ minor ]->active_buf );
- /* There's at least 1 empty -- make it active */
- dt3155_fbuffer[ minor ]->active_buf = pop_empty( minor );
- dt3155_fbuffer[ minor ]->
- frame_info[ dt3155_fbuffer[ minor ]->
- active_buf ].tag = ++unique_tag;
- }
- else /* nbuffers == 2, special case */
- { /* There is 1 active buffer.
- * If there is a locked buffer, keep the active buffer
- * the same -- that means we drop a frame.
- */
- if ( dt3155_fbuffer[ minor ]->locked_buf < 0 )
- {
- push_ready( minor,
- dt3155_fbuffer[ minor ]->active_buf );
- if (are_empty_buffers( minor ) )
- {
- dt3155_fbuffer[ minor ]->active_buf =
- pop_empty( minor );
- }
- else
- { /* no empty or locked buffers, so use a readybuf */
- dt3155_fbuffer[ minor ]->active_buf =
- pop_ready( minor );
- }
- }
- }
-
-#ifdef DEBUG_QUES_B
- printques( minor );
-#endif
-
- dt3155_fbuffer[ minor ]->even_happened = 0;
-
- wake_up_interruptible( &dt3155_read_wait_queue[ minor ] );
-
- local_irq_restore(flags);
- }
-
-
- /* Set up the DMA address for the next frame/field */
- buffer_addr = dt3155_fbuffer[ minor ]->
- frame_info[ dt3155_fbuffer[ minor ]->active_buf ].addr;
- if ( (dt3155_status[ minor ].state & DT3155_STATE_MODE) ==
- DT3155_STATE_FLD )
- {
- WriteMReg((dt3155_lbase[ minor ] + EVEN_DMA_START), buffer_addr);
- }
- else
- {
- WriteMReg((dt3155_lbase[ minor ] + EVEN_DMA_START), buffer_addr);
-
- WriteMReg((dt3155_lbase[ minor ] + ODD_DMA_START), buffer_addr
- + dt3155_status[ minor ].config.cols);
- }
-
- /* Do error checking */
- i2c_odd_csr.fld.DONE_ODD = 1;
- if ( i2c_odd_csr.fld.ERROR_ODD )
- dt3155_errno = DT_ERR_OVERRUN;
-
- WriteI2C(dt3155_lbase[ minor ], ODD_CSR, i2c_odd_csr.reg );
-
- return;
- }
- /* If we get here, the Odd Field wasn't it either... */
- printk( "neither even nor odd. shared perhaps?\n");
-}
-
-/*****************************************************
- * init_isr(int minor)
- * turns on interupt generation for the card
- * designated by "minor".
- * It is called *only* from inside ioctl().
- *****************************************************/
-static void dt3155_init_isr(int minor)
-{
- const u32 stride = dt3155_status[ minor ].config.cols;
-
- switch (dt3155_status[ minor ].state & DT3155_STATE_MODE)
- {
- case DT3155_STATE_FLD:
- {
- even_dma_start_r = dt3155_status[ minor ].
- fbuffer.frame_info[ dt3155_status[ minor ].fbuffer.active_buf ].addr;
- even_dma_stride_r = 0;
- odd_dma_stride_r = 0;
-
- WriteMReg((dt3155_lbase[ minor ] + EVEN_DMA_START),
- even_dma_start_r);
- WriteMReg((dt3155_lbase[ minor ] + EVEN_DMA_STRIDE),
- even_dma_stride_r);
- WriteMReg((dt3155_lbase[ minor ] + ODD_DMA_STRIDE),
- odd_dma_stride_r);
- break;
- }
-
- case DT3155_STATE_FRAME:
- default:
- {
- even_dma_start_r = dt3155_status[ minor ].
- fbuffer.frame_info[ dt3155_status[ minor ].fbuffer.active_buf ].addr;
- odd_dma_start_r = even_dma_start_r + stride;
- even_dma_stride_r = stride;
- odd_dma_stride_r = stride;
-
- WriteMReg((dt3155_lbase[ minor ] + EVEN_DMA_START),
- even_dma_start_r);
- WriteMReg((dt3155_lbase[ minor ] + ODD_DMA_START),
- odd_dma_start_r);
- WriteMReg((dt3155_lbase[ minor ] + EVEN_DMA_STRIDE),
- even_dma_stride_r);
- WriteMReg((dt3155_lbase[ minor ] + ODD_DMA_STRIDE),
- odd_dma_stride_r);
- break;
- }
- }
-
- /* 50/60 Hz should be set before this point but let's make sure it is */
- /* right anyway */
-
- ReadI2C(dt3155_lbase[ minor ], CONFIG, &i2c_csr2.reg);
- i2c_csr2.fld.HZ50 = FORMAT50HZ;
- WriteI2C(dt3155_lbase[ minor ], CONFIG, i2c_config.reg);
-
- /* enable busmaster chip, clear flags */
-
- /*
- * TODO:
- * shouldn't we be concered with continuous values of
- * DT3155_SNAP & DT3155_ACQ here? (SS)
- */
-
- csr1_r.reg = 0;
- csr1_r.fld.CAP_CONT_EVE = 1; /* use continuous capture bits to */
- csr1_r.fld.CAP_CONT_ODD = 1; /* enable */
- csr1_r.fld.FLD_DN_EVE = 1; /* writing a 1 clears flags */
- csr1_r.fld.FLD_DN_ODD = 1;
- csr1_r.fld.SRST = 1; /* reset - must be 1 */
- csr1_r.fld.FIFO_EN = 1; /* fifo control - must be 1 */
- csr1_r.fld.FLD_CRPT_EVE = 1; /* writing a 1 clears flags */
- csr1_r.fld.FLD_CRPT_ODD = 1;
-
- WriteMReg((dt3155_lbase[ minor ] + CSR1),csr1_r.reg);
-
- /* Enable interrupts at the end of each field */
-
- int_csr_r.reg = 0;
- int_csr_r.fld.FLD_END_EVE_EN = 1;
- int_csr_r.fld.FLD_END_ODD_EN = 1;
- int_csr_r.fld.FLD_START_EN = 0;
-
- WriteMReg((dt3155_lbase[ minor ] + INT_CSR), int_csr_r.reg);
-
- /* start internal BUSY bits */
-
- ReadI2C(dt3155_lbase[ minor ], CSR2, &i2c_csr2.reg);
- i2c_csr2.fld.BUSY_ODD = 1;
- i2c_csr2.fld.BUSY_EVE = 1;
- WriteI2C(dt3155_lbase[ minor ], CSR2, i2c_csr2.reg);
-
- /* Now its up to the interrupt routine!! */
-
- return;
-}
-
-
-/*****************************************************
- * ioctl()
- *
- *****************************************************/
-static int dt3155_ioctl(struct inode *inode,
- struct file *file,
- unsigned int cmd,
- unsigned long arg)
-{
- int minor = MINOR(inode->i_rdev); /* What device are we ioctl()'ing? */
-
- if ( minor >= MAXBOARDS || minor < 0 )
- return -ENODEV;
-
- /* make sure it is valid command */
- if (_IOC_NR(cmd) > DT3155_IOC_MAXNR)
- {
- printk("DT3155: invalid IOCTL(0x%x)\n",cmd);
- printk("DT3155: Valid commands (0x%x), (0x%x), (0x%x), (0x%x), (0x%x)\n",
- (unsigned int)DT3155_GET_CONFIG,
- (unsigned int)DT3155_SET_CONFIG,
- (unsigned int)DT3155_START,
- (unsigned int)DT3155_STOP,
- (unsigned int)DT3155_FLUSH);
- return -EINVAL;
- }
-
- switch (cmd)
- {
- case DT3155_SET_CONFIG:
- {
- if (dt3155_status[minor].state != DT3155_STATE_IDLE)
- return -EBUSY;
-
- {
- struct dt3155_config_s tmp;
- if (copy_from_user((void *)&tmp, (void *) arg, sizeof(tmp)))
- return -EFAULT;
- /* check for valid settings */
- if (tmp.rows > DT3155_MAX_ROWS ||
- tmp.cols > DT3155_MAX_COLS ||
- (tmp.acq_mode != DT3155_MODE_FRAME &&
- tmp.acq_mode != DT3155_MODE_FIELD) ||
- (tmp.continuous != DT3155_SNAP &&
- tmp.continuous != DT3155_ACQ))
- {
- return -EINVAL;
- }
- dt3155_status[minor].config = tmp;
- }
- return 0;
- }
- case DT3155_GET_CONFIG:
- {
- if (copy_to_user((void *) arg, (void *) &dt3155_status[minor],
- sizeof(dt3155_status_t) ))
- return -EFAULT;
- return 0;
- }
- case DT3155_FLUSH: /* Flushes the buffers -- ensures fresh data */
- {
- if (dt3155_status[minor].state != DT3155_STATE_IDLE)
- return -EBUSY;
- return dt3155_flush(minor);
- }
- case DT3155_STOP:
- {
- if (dt3155_status[minor].state & DT3155_STATE_STOP ||
- dt3155_status[minor].fbuffer.stop_acquire)
- return -EBUSY;
-
- if (dt3155_status[minor].state == DT3155_STATE_IDLE)
- return 0;
-
- quick_stop(minor);
- if (copy_to_user((void *) arg, (void *) &dt3155_status[minor],
- sizeof(dt3155_status_t)))
- return -EFAULT;
- return 0;
- }
- case DT3155_START:
- {
- if (dt3155_status[minor].state != DT3155_STATE_IDLE)
- return -EBUSY;
-
- dt3155_status[minor].fbuffer.stop_acquire = 0;
- dt3155_status[minor].fbuffer.frame_count = 0;
-
- /* Set the MODE in the status -- we default to FRAME */
- if (dt3155_status[minor].config.acq_mode == DT3155_MODE_FIELD)
- {
- dt3155_status[minor].state = DT3155_STATE_FLD;
- }
- else
- {
- dt3155_status[minor].state = DT3155_STATE_FRAME;
- }
-
- dt3155_init_isr(minor);
- if (copy_to_user( (void *) arg, (void *) &dt3155_status[minor],
- sizeof(dt3155_status_t)))
- return -EFAULT;
- return 0;
- }
- default:
- {
- printk("DT3155: invalid IOCTL(0x%x)\n",cmd);
- printk("DT3155: Valid commands (0x%x), (0x%x), (0x%x), (0x%x), (0x%x)\n",
- (unsigned int)DT3155_GET_CONFIG,
- (unsigned int)DT3155_SET_CONFIG,
- DT3155_START, DT3155_STOP, DT3155_FLUSH);
- return -ENOSYS;
- }
- }
- return -ENOSYS;
-}
-
-/*****************************************************
- * mmap()
- *
- * only allow the user to mmap the registers and buffer
- * It is quite possible that this is broken, since the
- * addition of of the capacity for two cards!!!!!!!!
- * It *looks* like it should work but since I'm not
- * sure how to use it, I'm not actually sure. (NJC? ditto by SS)
- *****************************************************/
-static int dt3155_mmap (struct file * file, struct vm_area_struct * vma)
-{
- /* which device are we mmapping? */
- int minor = MINOR(file->f_dentry->d_inode->i_rdev);
- unsigned long offset;
- offset = vma->vm_pgoff << PAGE_SHIFT;
-
- if (offset >= __pa(high_memory) || (file->f_flags & O_SYNC))
- vma->vm_flags |= VM_IO;
-
- /* Don't try to swap out physical pages.. */
- vma->vm_flags |= VM_RESERVED;
-
- /* they are mapping the registers or the buffer */
- if ((offset == dt3155_status[minor].reg_addr &&
- vma->vm_end - vma->vm_start == PCI_PAGE_SIZE) ||
- (offset == dt3155_status[minor].mem_addr &&
- vma->vm_end - vma->vm_start == dt3155_status[minor].mem_size))
- {
- if (remap_pfn_range(vma,
- vma->vm_start,
- offset >> PAGE_SHIFT,
- vma->vm_end - vma->vm_start,
- vma->vm_page_prot)) {
- printk("DT3155: remap_page_range() failed.\n");
- return -EAGAIN;
- }
- }
- else
- {
- printk("DT3155: dt3155_mmap() bad call.\n");
- return -ENXIO;
- }
-
- return 0;
-}
-
-
-/*****************************************************
- * open()
- *
- * Our special open code.
- * MOD_INC_USE_COUNT make sure that the driver memory is not freed
- * while the device is in use.
- *****************************************************/
-static int dt3155_open( struct inode* inode, struct file* filep)
-{
- int minor = MINOR(inode->i_rdev); /* what device are we opening? */
- if (dt3155_dev_open[ minor ]) {
- printk ("DT3155: Already opened by another process.\n");
- return -EBUSY;
- }
-
- if (dt3155_status[ minor ].device_installed==0)
- {
- printk("DT3155 Open Error: No such device dt3155 minor number %d\n",
- minor);
- return -EIO;
- }
-
- if (dt3155_status[ minor ].state != DT3155_STATE_IDLE) {
- printk ("DT3155: Not in idle state (state = %x)\n",
- dt3155_status[ minor ].state);
- return -EBUSY;
- }
-
- printk("DT3155: Device opened.\n");
-
- dt3155_dev_open[ minor ] = 1 ;
-
- dt3155_flush( minor );
-
- /* Disable ALL interrupts */
- int_csr_r.reg = 0;
- WriteMReg( (dt3155_lbase[ minor ] + INT_CSR), int_csr_r.reg );
-
- init_waitqueue_head(&(dt3155_read_wait_queue[minor]));
-
- return 0;
-}
-
-
-/*****************************************************
- * close()
- *
- * Now decrement the use count.
- *
- *****************************************************/
-static int dt3155_close( struct inode *inode, struct file *filep)
-{
- int minor;
-
- minor = MINOR(inode->i_rdev); /* which device are we closing */
- if (!dt3155_dev_open[ minor ])
- {
- printk("DT3155: attempt to CLOSE a not OPEN device\n");
- }
- else
- {
- dt3155_dev_open[ minor ] = 0;
-
- if (dt3155_status[ minor ].state != DT3155_STATE_IDLE)
- {
- quick_stop(minor);
- }
- }
- return 0;
-}
-
-/*****************************************************
- * read()
- *
- *****************************************************/
-static ssize_t dt3155_read(struct file *filep, char __user *buf,
- size_t count, loff_t *ppos)
-{
- /* which device are we reading from? */
- int minor = MINOR(filep->f_dentry->d_inode->i_rdev);
- u32 offset;
- int frame_index;
- frame_info_t *frame_info_p;
-
- /* TODO: this should check the error flag and */
- /* return an error on hardware failures */
- if (count != sizeof(dt3155_read_t))
- {
- printk("DT3155 ERROR (NJC): count is not right\n");
- return -EINVAL;
- }
-
-
- /* Hack here -- I'm going to allow reading even when idle.
- * this is so that the frames can be read after STOP has
- * been called. Leaving it here, commented out, as a reminder
- * for a short while to make sure there are no problems.
- * Note that if the driver is not opened in non_blocking mode,
- * and the device is idle, then it could sit here forever! */
-
- /* if (dt3155_status[minor].state == DT3155_STATE_IDLE)*/
- /* return -EBUSY;*/
-
- /* non-blocking reads should return if no data */
- if (filep->f_flags & O_NDELAY)
- {
- if ((frame_index = dt3155_get_ready_buffer(minor)) < 0) {
- /*printk( "dt3155: no buffers available (?)\n");*/
- /* printques(minor); */
- return -EAGAIN;
- }
- }
- else
- {
- /*
- * sleep till data arrives , or we get interrupted.
- * Note that wait_event_interruptible() does not actually
- * sleep/wait if it's condition evaluates to true upon entry.
- */
- wait_event_interruptible(dt3155_read_wait_queue[minor],
- (frame_index = dt3155_get_ready_buffer(minor))
- >= 0);
-
- if (frame_index < 0)
- {
- printk ("DT3155: read: interrupted\n");
- quick_stop (minor);
- printques(minor);
- return -EINTR;
- }
- }
-
- frame_info_p = &dt3155_status[minor].fbuffer.frame_info[frame_index];
-
- /* make this an offset */
- offset = frame_info_p->addr - dt3155_status[minor].mem_addr;
-
- put_user(offset, (unsigned int *) buf);
- buf += sizeof(u32);
- put_user( dt3155_status[minor].fbuffer.frame_count, (unsigned int *) buf);
- buf += sizeof(u32);
- put_user(dt3155_status[minor].state, (unsigned int *) buf);
- buf += sizeof(u32);
- if (copy_to_user(buf, frame_info_p, sizeof(frame_info_t)))
- return -EFAULT;
-
- return sizeof(dt3155_read_t);
-}
-
-static unsigned int dt3155_poll (struct file * filp, poll_table *wait)
-{
- int minor = MINOR(filp->f_dentry->d_inode->i_rdev);
-
- if (!is_ready_buf_empty(minor))
- return POLLIN | POLLRDNORM;
-
- poll_wait (filp, &dt3155_read_wait_queue[minor], wait);
-
- return 0;
-}
-
-
-/*****************************************************
- * file operations supported by DT3155 driver
- * needed by init_module
- * register_chrdev
- *****************************************************/
-static struct file_operations dt3155_fops = {
- read: dt3155_read,
- ioctl: dt3155_ioctl,
- mmap: dt3155_mmap,
- poll: dt3155_poll,
- open: dt3155_open,
- release: dt3155_close
-};
-
-
-/*****************************************************
- * find_PCI();
- *
- * PCI has been totally reworked in 2.1..
- *****************************************************/
-static int find_PCI (void)
-{
- struct pci_dev *pci_dev = NULL;
- int error, pci_index = 0;
- unsigned short rev_device;
- unsigned long base;
- unsigned char irq;
-
- while ((pci_dev = pci_get_device
- (DT3155_VENDORID, DT3155_DEVICEID, pci_dev)) != NULL)
- {
- pci_index ++;
-
- /* Is it really there? */
- if ((error =
- pci_read_config_word(pci_dev, PCI_CLASS_DEVICE, &rev_device)))
- continue;
-
- /* Found a board */
- DT_3155_DEBUG_MSG("DT3155: Device number %d \n", pci_index);
-
- /* Make sure the driver was compiled with enough buffers to handle
- this many boards */
- if (pci_index > MAXBOARDS) {
- printk("DT3155: ERROR - found %d devices, but driver only configured "
- "for %d devices\n"
- "DT3155: Please change MAXBOARDS in dt3155.h\n",
- pci_index, MAXBOARDS);
- goto err;
- }
-
- /* Now, just go out and make sure that this/these device(s) is/are
- actually mapped into the kernel address space */
- if ((error = pci_read_config_dword( pci_dev, PCI_BASE_ADDRESS_0,
- (u32 *) &base)))
- {
- printk("DT3155: Was not able to find device \n");
- goto err;
- }
-
- DT_3155_DEBUG_MSG("DT3155: Base address 0 for device is %lx \n", base);
- dt3155_status[pci_index-1].reg_addr = base;
-
- /* Remap the base address to a logical address through which we
- * can access it. */
- dt3155_lbase[ pci_index - 1 ] = ioremap(base,PCI_PAGE_SIZE);
- dt3155_status[ pci_index - 1 ].reg_addr = base;
- DT_3155_DEBUG_MSG("DT3155: New logical address is %p \n",
- dt3155_lbase[pci_index-1]);
- if ( !dt3155_lbase[pci_index-1] )
- {
- printk("DT3155: Unable to remap control registers\n");
- goto err;
- }
-
- if ( (error = pci_read_config_byte( pci_dev, PCI_INTERRUPT_LINE, &irq)) )
- {
- printk("DT3155: Was not able to find device \n");
- goto err;
- }
-
- DT_3155_DEBUG_MSG("DT3155: IRQ is %d \n",irq);
- dt3155_status[ pci_index-1 ].irq = irq;
- /* Set flag: kth device found! */
- dt3155_status[ pci_index-1 ].device_installed = 1;
- printk("DT3155: Installing device %d w/irq %d and address %p\n",
- pci_index,
- dt3155_status[pci_index-1].irq,
- dt3155_lbase[pci_index-1]);
-
- }
- ndevices = pci_index;
-
- return DT_3155_SUCCESS;
-
-err:
- pci_dev_put(pci_dev);
- return DT_3155_FAILURE;
-}
-
-u32 allocatorAddr = 0;
-
-/*****************************************************
- * init_module()
- *****************************************************/
-int init_module(void)
-{
- int index;
- int rcode = 0;
- char *devname[ MAXBOARDS ];
-
- devname[ 0 ] = "dt3155a";
-#if MAXBOARDS == 2
- devname[ 1 ] = "dt3155b";
-#endif
-
- printk("DT3155: Loading module...\n");
-
- /* Register the device driver */
- rcode = register_chrdev( dt3155_major, "dt3155", &dt3155_fops );
- if( rcode < 0 )
- {
- printk( KERN_INFO "DT3155: register_chrdev failed \n");
- return rcode;
- }
-
- if( dt3155_major == 0 )
- dt3155_major = rcode; /* dynamic */
-
-
- /* init the status variables. */
- /* DMA memory is taken care of in setup_buffers() */
- for ( index = 0; index < MAXBOARDS; index++ )
- {
- dt3155_status[ index ].config.acq_mode = DT3155_MODE_FRAME;
- dt3155_status[ index ].config.continuous = DT3155_ACQ;
- dt3155_status[ index ].config.cols = DT3155_MAX_COLS;
- dt3155_status[ index ].config.rows = DT3155_MAX_ROWS;
- dt3155_status[ index ].state = DT3155_STATE_IDLE;
-
- /* find_PCI() will check if devices are installed; */
- /* first assume they're not: */
- dt3155_status[ index ].mem_addr = 0;
- dt3155_status[ index ].mem_size = 0;
- dt3155_status[ index ].state = DT3155_STATE_IDLE;
- dt3155_status[ index ].device_installed = 0;
- }
-
- /* Now let's find the hardware. find_PCI() will set ndevices to the
- * number of cards found in this machine. */
- {
- if ( (rcode = find_PCI()) != DT_3155_SUCCESS )
- {
- printk("DT3155 error: find_PCI() failed to find dt3155 board(s)\n");
- unregister_chrdev( dt3155_major, "dt3155" );
- return rcode;
- }
- }
-
- /* Ok, time to setup the frame buffers */
- if( (rcode = dt3155_setup_buffers(&allocatorAddr)) < 0 )
- {
- printk("DT3155: Error: setting up buffer not large enough.");
- unregister_chrdev( dt3155_major, "dt3155" );
- return rcode;
- }
-
- /* If we are this far, then there is enough RAM */
- /* for the buffers: Print the configuration. */
- for( index = 0; index < ndevices; index++ )
- {
- printk("DT3155: Device = %d; acq_mode = %d; "
- "continuous = %d; cols = %d; rows = %d;\n",
- index ,
- dt3155_status[ index ].config.acq_mode,
- dt3155_status[ index ].config.continuous,
- dt3155_status[ index ].config.cols,
- dt3155_status[ index ].config.rows);
- printk("DT3155: m_addr = 0x%x; m_size = %ld; "
- "state = %d; device_installed = %d\n",
- dt3155_status[ index ].mem_addr,
- (long int)dt3155_status[ index ].mem_size,
- dt3155_status[ index ].state,
- dt3155_status[ index ].device_installed);
- }
-
- /* Disable ALL interrupts */
- int_csr_r.reg = 0;
- for( index = 0; index < ndevices; index++ )
- {
- WriteMReg( (dt3155_lbase[ index ] + INT_CSR), int_csr_r.reg );
- if( dt3155_status[ index ].device_installed )
- {
- /*
- * This driver *looks* like it can handle sharing interrupts,
- * but I can't actually test myself. I've had reports that it
- * DOES work so I'll enable it for now. This comment will remain
- * as a reminder in case any problems arise. (SS)
- */
- /* in older kernels flags are: SA_SHIRQ | SA_INTERRUPT */
- rcode = request_irq( dt3155_status[ index ].irq, (void *)dt3155_isr,
- IRQF_SHARED | IRQF_DISABLED, devname[ index ],
- (void*) &dt3155_status[index]);
- if( rcode < 0 )
- {
- printk("DT3155: minor %d request_irq failed for IRQ %d\n",
- index, dt3155_status[index].irq);
- unregister_chrdev( dt3155_major, "dt3155" );
- return rcode;
- }
- }
- }
-
- printk("DT3155: finished loading\n");
-
- return 0;
-}
-
-/*****************************************************
- * cleanup_module(void)
- *
- *****************************************************/
-void cleanup_module(void)
-{
- int index;
-
- printk("DT3155: cleanup_module called\n");
-
- /* removed DMA allocated with the allocator */
-#ifdef STANDALONE_ALLOCATOR
- if (allocatorAddr != 0)
- allocator_free_dma(allocatorAddr);
-#else
- allocator_cleanup();
-#endif
-
- unregister_chrdev( dt3155_major, "dt3155" );
-
- for( index = 0; index < ndevices; index++ )
- {
- if( dt3155_status[ index ].device_installed == 1 )
- {
- printk( "DT3155: Freeing irq %d for device %d\n",
- dt3155_status[ index ].irq, index );
- free_irq( dt3155_status[ index ].irq, (void*)&dt3155_status[index] );
- }
- }
-}
-
diff --git a/drivers/staging/dt3155/dt3155_drv.h b/drivers/staging/dt3155/dt3155_drv.h
deleted file mode 100644
index 95e68c3..0000000
--- a/drivers/staging/dt3155/dt3155_drv.h
+++ /dev/null
@@ -1,45 +0,0 @@
-/*
-
-Copyright 1996,2002 Gregory D. Hager, Alfred A. Rizzi, Noah J. Cowan,
- Scott Smedley
-
-This file is part of the DT3155 Device Driver.
-
-The DT3155 Device Driver is free software; you can redistribute it
-and/or modify it under the terms of the GNU General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
-
-The DT3155 Device Driver 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.
-
-You should have received a copy of the GNU General Public License
-along with the DT3155 Device Driver; if not, write to the Free
-Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
-MA 02111-1307 USA
-*/
-
-#ifndef DT3155_DRV_INC
-#define DT3155_DRV_INC
-
-/* kernel logical address of the frame grabbers */
-extern u8 *dt3155_lbase[MAXBOARDS];
-
-/* kernel logical address of ram buffer */
-extern u8 *dt3155_bbase;
-
-#ifdef __KERNEL__
-#include <linux/wait.h>
-
-/* wait queue for reads */
-extern wait_queue_head_t dt3155_read_wait_queue[MAXBOARDS];
-#endif
-
-/* number of devices */
-extern u32 ndevices;
-
-extern int dt3155_errno;
-
-#endif
diff --git a/drivers/staging/dt3155/dt3155_io.c b/drivers/staging/dt3155/dt3155_io.c
deleted file mode 100644
index 6b9c685..0000000
--- a/drivers/staging/dt3155/dt3155_io.c
+++ /dev/null
@@ -1,175 +0,0 @@
-/*
- * Copyright 1996,2002,2005 Gregory D. Hager, Alfred A. Rizzi, Noah J. Cowan,
- * Jason Lapenta, Scott Smedley
- *
- * This file is part of the DT3155 Device Driver.
- *
- * The DT3155 Device Driver is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- *
- * The DT3155 Device Driver 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.
- */
-
-/*
- * This file provides some basic register io routines. It is modified from
- * demo code provided by Data Translations.
- */
-
-#include <linux/delay.h>
-#include "dt3155.h"
-#include "dt3155_io.h"
-#include "dt3155_drv.h"
-
-
-/****** local copies of board's 32 bit registers ******/
-u32 even_dma_start_r; /* bit 0 should always be 0 */
-u32 odd_dma_start_r; /* .. */
-u32 even_dma_stride_r; /* bits 0&1 should always be 0 */
-u32 odd_dma_stride_r; /* .. */
-u32 even_pixel_fmt_r;
-u32 odd_pixel_fmt_r;
-
-FIFO_TRIGGER_R fifo_trigger_r;
-XFER_MODE_R xfer_mode_r;
-CSR1_R csr1_r;
-RETRY_WAIT_CNT_R retry_wait_cnt_r;
-INT_CSR_R int_csr_r;
-
-u32 even_fld_mask_r;
-u32 odd_fld_mask_r;
-
-MASK_LENGTH_R mask_length_r;
-FIFO_FLAG_CNT_R fifo_flag_cnt_r;
-IIC_CLK_DUR_R iic_clk_dur_r;
-IIC_CSR1_R iic_csr1_r;
-IIC_CSR2_R iic_csr2_r;
-DMA_UPPER_LMT_R even_dma_upper_lmt_r;
-DMA_UPPER_LMT_R odd_dma_upper_lmt_r;
-
-
-
-/******** local copies of board's 8 bit I2C registers ******/
-I2C_CSR2 i2c_csr2;
-I2C_EVEN_CSR i2c_even_csr;
-I2C_ODD_CSR i2c_odd_csr;
-I2C_CONFIG i2c_config;
-u8 i2c_dt_id;
-u8 i2c_x_clip_start;
-u8 i2c_y_clip_start;
-u8 i2c_x_clip_end;
-u8 i2c_y_clip_end;
-u8 i2c_ad_addr;
-u8 i2c_ad_lut;
-I2C_AD_CMD i2c_ad_cmd;
-u8 i2c_dig_out;
-u8 i2c_pm_lut_addr;
-u8 i2c_pm_lut_data;
-
-/*
- * wait_ibsyclr()
- *
- * This function handles read/write timing and r/w timeout error
- *
- * Returns TRUE if NEW_CYCLE clears
- * Returns FALSE if NEW_CYCLE doesn't clear in roughly 3 msecs, otherwise
- * returns 0
- */
-static int wait_ibsyclr(u8 *lpReg)
-{
- /* wait 100 microseconds */
- udelay(100L);
- /* __delay(loops_per_sec/10000); */
- if (iic_csr2_r.fld.NEW_CYCLE) {
- /* if NEW_CYCLE didn't clear */
- /* TIMEOUT ERROR */
- dt3155_errno = DT_ERR_I2C_TIMEOUT;
- return FALSE;
- } else
- return TRUE; /* no error */
-}
-
-/*
- * WriteI2C()
- *
- * This function handles writing to 8-bit DT3155 registers
- *
- * 1st parameter is pointer to 32-bit register base address
- * 2nd parameter is reg. index;
- * 3rd is value to be written
- *
- * Returns TRUE - Successful completion
- * FALSE - Timeout error - cycle did not complete!
- */
-int WriteI2C(u8 *lpReg, u_short wIregIndex, u8 byVal)
-{
- int writestat; /* status for return */
-
- /* read 32 bit IIC_CSR2 register data into union */
-
- ReadMReg((lpReg + IIC_CSR2), iic_csr2_r.reg);
-
- /* for write operation */
- iic_csr2_r.fld.DIR_RD = 0;
- /* I2C address of I2C register: */
- iic_csr2_r.fld.DIR_ADDR = wIregIndex;
- /* 8 bit data to be written to I2C reg */
- iic_csr2_r.fld.DIR_WR_DATA = byVal;
- /* will start a direct I2C cycle: */
- iic_csr2_r.fld.NEW_CYCLE = 1;
-
- /* xfer union data into 32 bit IIC_CSR2 register */
- WriteMReg((lpReg + IIC_CSR2), iic_csr2_r.reg);
-
- /* wait for IIC cycle to finish */
- writestat = wait_ibsyclr(lpReg);
- return writestat;
-}
-
-/*
- * ReadI2C()
- *
- * This function handles reading from 8-bit DT3155 registers
- *
- * 1st parameter is pointer to 32-bit register base address
- * 2nd parameter is reg. index;
- * 3rd is adrs of value to be read
- *
- * Returns TRUE - Successful completion
- * FALSE - Timeout error - cycle did not complete!
- */
-int ReadI2C(u8 *lpReg, u_short wIregIndex, u8 *byVal)
-{
- int writestat; /* status for return */
-
- /* read 32 bit IIC_CSR2 register data into union */
- ReadMReg((lpReg + IIC_CSR2), iic_csr2_r.reg);
-
- /* for read operation */
- iic_csr2_r.fld.DIR_RD = 1;
-
- /* I2C address of I2C register: */
- iic_csr2_r.fld.DIR_ADDR = wIregIndex;
-
- /* will start a direct I2C cycle: */
- iic_csr2_r.fld.NEW_CYCLE = 1;
-
- /* xfer union's data into 32 bit IIC_CSR2 register */
- WriteMReg((lpReg + IIC_CSR2), iic_csr2_r.reg);
-
- /* wait for IIC cycle to finish */
- writestat = wait_ibsyclr(lpReg);
-
- /* Next 2 commands read 32 bit IIC_CSR1 register's data into union */
- /* first read data is in IIC_CSR1 */
- ReadMReg((lpReg + IIC_CSR1), iic_csr1_r.reg);
-
- /* now get data u8 out of register */
- *byVal = (u8) iic_csr1_r.fld.RD_DATA;
-
- return writestat;
-}
diff --git a/drivers/staging/dt3155/dt3155_isr.c b/drivers/staging/dt3155/dt3155_isr.c
deleted file mode 100644
index fd7f93d..0000000
--- a/drivers/staging/dt3155/dt3155_isr.c
+++ /dev/null
@@ -1,516 +0,0 @@
-/*
-
-Copyright 1996,2002,2005 Gregory D. Hager, Alfred A. Rizzi, Noah J. Cowan,
- Jason Lapenta, Scott Smedley, Greg Sharp
-
-This file is part of the DT3155 Device Driver.
-
-The DT3155 Device Driver is free software; you can redistribute it
-and/or modify it under the terms of the GNU General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
-
-The DT3155 Device Driver 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.
-
-You should have received a copy of the GNU General Public License
-along with the DT3155 Device Driver; if not, write to the Free
-Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
-MA 02111-1307 USA
-
- File: dt3155_isr.c
-Purpose: Buffer management routines, and other routines for the ISR
- (the actual isr is in dt3155_drv.c)
-
--- Changes --
-
- Date Programmer Description of changes made
- -------------------------------------------------------------------
- 03-Jul-2000 JML n/a
- 02-Apr-2002 SS Mods to make work with separate allocator
- module; Merged John Roll's mods to make work with
- multiple boards.
- 10-Jul-2002 GCS Complete rewrite of setup_buffers to disallow
- buffers which span a 4MB boundary.
- 24-Jul-2002 SS GPL licence.
- 30-Jul-2002 NJC Added support for buffer loop.
- 31-Jul-2002 NJC Complete rewrite of buffer management
- 02-Aug-2002 NJC Including slab.h instead of malloc.h (no warning).
- Also, allocator_init() now returns allocator_max
- so cleaned up allocate_buffers() accordingly.
- 08-Aug-2005 SS port to 2.6 kernel.
-
-*/
-
-#include <asm/system.h>
-#include <linux/slab.h>
-#include <linux/sched.h>
-#include <linux/types.h>
-
-#include "dt3155.h"
-#include "dt3155_drv.h"
-#include "dt3155_io.h"
-#include "dt3155_isr.h"
-#include "allocator.h"
-
-#define FOUR_MB (0x0400000) /* Can't DMA accross a 4MB boundary!*/
-#define UPPER_10_BITS (0x3FF<<22) /* Can't DMA accross a 4MB boundary!*/
-
-
-/* Pointer into global structure for handling buffers */
-struct dt3155_fbuffer_s *dt3155_fbuffer[MAXBOARDS] = {NULL
-#if MAXBOARDS == 2
- , NULL
-#endif
-};
-
-/******************************************************************************
- * Simple array based que struct
- *
- * Some handy functions using the buffering structure.
- *****************************************************************************/
-
-
-/***************************
- * are_empty_buffers
- * m is minor # of device
- ***************************/
-inline bool are_empty_buffers( int m )
-{
- return ( dt3155_fbuffer[ m ]->empty_len );
-}
-
-/**************************
- * push_empty
- * m is minor # of device
- *
- * This is slightly confusing. The number empty_len is the literal #
- * of empty buffers. After calling, empty_len-1 is the index into the
- * empty buffer stack. So, if empty_len == 1, there is one empty buffer,
- * given by dt3155_fbuffer[m]->empty_buffers[0].
- * empty_buffers should never fill up, though this is not checked.
- **************************/
-inline void push_empty( int index, int m )
-{
- dt3155_fbuffer[m]->empty_buffers[ dt3155_fbuffer[m]->empty_len ] = index;
- dt3155_fbuffer[m]->empty_len++;
-}
-
-/**************************
- * pop_empty( m )
- * m is minor # of device
- **************************/
-inline int pop_empty( int m )
-{
- dt3155_fbuffer[m]->empty_len--;
- return dt3155_fbuffer[m]->empty_buffers[ dt3155_fbuffer[m]->empty_len ];
-}
-
-/*************************
- * is_ready_buf_empty( m )
- * m is minor # of device
- *************************/
-inline bool is_ready_buf_empty( int m )
-{
- return ((dt3155_fbuffer[ m ]->ready_len) == 0);
-}
-
-/*************************
- * is_ready_buf_full( m )
- * m is minor # of device
- * this should *never* be true if there are any active, locked or empty
- * buffers, since it corresponds to nbuffers ready buffers!!
- * 7/31/02: total rewrite. --NJC
- *************************/
-inline bool is_ready_buf_full( int m )
-{
- return ( dt3155_fbuffer[ m ]->ready_len == dt3155_fbuffer[ m ]->nbuffers );
-}
-
-/*****************************************************
- * push_ready( m, buffer )
- * m is minor # of device
- *
- *****************************************************/
-inline void push_ready( int m, int index )
-{
- int head = dt3155_fbuffer[m]->ready_head;
-
- dt3155_fbuffer[ m ]->ready_que[ head ] = index;
- dt3155_fbuffer[ m ]->ready_head = ( (head + 1) %
- (dt3155_fbuffer[ m ]->nbuffers) );
- dt3155_fbuffer[ m ]->ready_len++;
-
-}
-
-/*****************************************************
- * get_tail()
- * m is minor # of device
- *
- * Simply comptutes the tail given the head and the length.
- *****************************************************/
-static inline int get_tail( int m )
-{
- return ((dt3155_fbuffer[ m ]->ready_head -
- dt3155_fbuffer[ m ]->ready_len +
- dt3155_fbuffer[ m ]->nbuffers)%
- (dt3155_fbuffer[ m ]->nbuffers));
-}
-
-
-
-/*****************************************************
- * pop_ready()
- * m is minor # of device
- *
- * This assumes that there is a ready buffer ready... should
- * be checked (e.g. with is_ready_buf_empty() prior to call.
- *****************************************************/
-inline int pop_ready( int m )
-{
- int tail;
- tail = get_tail(m);
- dt3155_fbuffer[ m ]->ready_len--;
- return dt3155_fbuffer[ m ]->ready_que[ tail ];
-}
-
-
-/*****************************************************
- * printques
- * m is minor # of device
- *****************************************************/
-inline void printques( int m )
-{
- int head = dt3155_fbuffer[ m ]->ready_head;
- int tail;
- int num = dt3155_fbuffer[ m ]->nbuffers;
- int frame_index;
- int index;
-
- tail = get_tail(m);
-
- printk("\n R:");
- for ( index = tail; index != head; index++, index = index % (num) )
- {
- frame_index = dt3155_fbuffer[ m ]->ready_que[ index ];
- printk(" %d ", frame_index );
- }
-
- printk("\n E:");
- for ( index = 0; index < dt3155_fbuffer[ m ]->empty_len; index++ )
- {
- frame_index = dt3155_fbuffer[ m ]->empty_buffers[ index ];
- printk(" %d ", frame_index );
- }
-
- frame_index = dt3155_fbuffer[ m ]->active_buf;
- printk("\n A: %d", frame_index);
-
- frame_index = dt3155_fbuffer[ m ]->locked_buf;
- printk("\n L: %d \n", frame_index );
-
-}
-
-/*****************************************************
- * adjust_4MB
- *
- * If a buffer intersects the 4MB boundary, push
- * the start address up to the beginning of the
- * next 4MB chunk (assuming bufsize < 4MB).
- *****************************************************/
-u32 adjust_4MB (u32 buf_addr, u32 bufsize) {
- if (((buf_addr+bufsize) & UPPER_10_BITS) != (buf_addr & UPPER_10_BITS))
- return (buf_addr+bufsize) & UPPER_10_BITS;
- else
- return buf_addr;
-}
-
-
-/*****************************************************
- * allocate_buffers
- *
- * Try to allocate enough memory for all requested
- * buffers. If there is not enough free space
- * try for less memory.
- *****************************************************/
-void allocate_buffers (u32 *buf_addr, u32* total_size_kbs,
- u32 bufsize)
-{
- /* Compute the minimum amount of memory guaranteed to hold all
- MAXBUFFERS such that no buffer crosses the 4MB boundary.
- Store this value in the variable "full_size" */
-
- u32 allocator_max;
- u32 bufs_per_chunk = (FOUR_MB / bufsize);
- u32 filled_chunks = (MAXBUFFERS-1) / bufs_per_chunk;
- u32 leftover_bufs = MAXBUFFERS - filled_chunks * bufs_per_chunk;
-
- u32 full_size = bufsize /* possibly unusable part of 1st chunk */
- + filled_chunks * FOUR_MB /* max # of completely filled 4mb chunks */
- + leftover_bufs * bufsize; /* these buffs will be in a partly filled
- chunk at beginning or end */
-
- u32 full_size_kbs = 1 + (full_size-1) / 1024;
- u32 min_size_kbs = 2*ndevices*bufsize / 1024;
- u32 size_kbs;
-
- /* Now, try to allocate full_size. If this fails, keep trying for
- less & less memory until it succeeds. */
-#ifndef STANDALONE_ALLOCATOR
- /* initialize the allocator */
- allocator_init(&allocator_max);
-#endif
- size_kbs = full_size_kbs;
- *buf_addr = 0;
- printk("DT3155: We would like to get: %d KB\n", full_size_kbs);
- printk("DT3155: ...but need at least: %d KB\n", min_size_kbs);
- printk("DT3155: ...the allocator has: %d KB\n", allocator_max);
- size_kbs = (full_size_kbs <= allocator_max ? full_size_kbs : allocator_max);
- if (size_kbs > min_size_kbs) {
- if ((*buf_addr = allocator_allocate_dma (size_kbs, GFP_KERNEL)) != 0) {
- printk("DT3155: Managed to allocate: %d KB\n", size_kbs);
- *total_size_kbs = size_kbs;
- return;
- }
- }
- /* If we got here, the allocation failed */
- printk ("DT3155: Allocator failed!\n");
- *buf_addr = 0;
- *total_size_kbs = 0;
- return;
-
-}
-
-
-/*****************************************************
- * dt3155_setup_buffers
- *
- * setup_buffers just puts the buffering system into
- * a consistent state before the start of interrupts
- *
- * JML : it looks like all the buffers need to be
- * continuous. So I'm going to try and allocate one
- * continuous buffer.
- *
- * GCS : Fix DMA problems when buffer spans
- * 4MB boundary. Also, add error checking. This
- * function will return -ENOMEM when not enough memory.
- *****************************************************/
-u32 dt3155_setup_buffers(u32 *allocatorAddr)
-
-{
- u32 index;
- u32 rambuff_addr; /* start of allocation */
- u32 rambuff_size; /* total size allocated to driver */
- u32 rambuff_acm; /* accumlator, keep track of how much
- is left after being split up*/
- u32 rambuff_end; /* end of rambuff */
- u32 numbufs; /* number of useful buffers allocated (per device) */
- u32 bufsize = DT3155_MAX_ROWS * DT3155_MAX_COLS;
- int m; /* minor # of device, looped for all devs */
-
- /* zero the fbuffer status and address structure */
- for ( m = 0; m < ndevices; m++)
- {
- dt3155_fbuffer[ m ] = &(dt3155_status[ m ].fbuffer);
-
- /* Make sure the buffering variables are consistent */
- {
- u8 *ptr = (u8 *) dt3155_fbuffer[ m ];
- for( index = 0; index < sizeof(struct dt3155_fbuffer_s); index++)
- *(ptr++)=0;
- }
- }
-
- /* allocate a large contiguous chunk of RAM */
- allocate_buffers (&rambuff_addr, &rambuff_size, bufsize);
- printk("DT3155: mem info\n");
- printk(" - rambuf_addr = 0x%x \n", rambuff_addr);
- printk(" - length (kb) = %u \n", rambuff_size);
- if( rambuff_addr == 0 )
- {
- printk( KERN_INFO
- "DT3155: Error setup_buffers() allocator dma failed \n" );
- return -ENOMEM;
- }
- *allocatorAddr = rambuff_addr;
- rambuff_end = rambuff_addr + 1024 * rambuff_size;
-
- /* after allocation, we need to count how many useful buffers there
- are so we can give an equal number to each device */
- rambuff_acm = rambuff_addr;
- for ( index = 0; index < MAXBUFFERS; index++) {
- rambuff_acm = adjust_4MB (rambuff_acm, bufsize);/*avoid spanning 4MB bdry*/
- if (rambuff_acm + bufsize > rambuff_end)
- break;
- rambuff_acm += bufsize;
- }
- /* Following line is OK, will waste buffers if index
- * not evenly divisible by ndevices -NJC*/
- numbufs = index / ndevices;
- printk(" - numbufs = %u\n", numbufs);
- if (numbufs < 2) {
- printk( KERN_INFO
- "DT3155: Error setup_buffers() couldn't allocate 2 bufs/board\n" );
- return -ENOMEM;
- }
-
- /* now that we have board memory we spit it up */
- /* between the boards and the buffers */
- rambuff_acm = rambuff_addr;
- for ( m = 0; m < ndevices; m ++)
- {
- rambuff_acm = adjust_4MB (rambuff_acm, bufsize);
-
- /* Save the start of this boards buffer space (for mmap). */
- dt3155_status[ m ].mem_addr = rambuff_acm;
-
- for (index = 0; index < numbufs; index++)
- {
- rambuff_acm = adjust_4MB (rambuff_acm, bufsize);
- if (rambuff_acm + bufsize > rambuff_end) {
- /* Should never happen */
- printk ("DT3155 PROGRAM ERROR (GCS)\n"
- "Error distributing allocated buffers\n");
- return -ENOMEM;
- }
-
- dt3155_fbuffer[ m ]->frame_info[ index ].addr = rambuff_acm;
- push_empty( index, m );
- /* printk(" - Buffer : %lx\n",
- * dt3155_fbuffer[ m ]->frame_info[ index ].addr );
- */
- dt3155_fbuffer[ m ]->nbuffers += 1;
- rambuff_acm += bufsize;
- }
-
- /* Make sure there is an active buffer there. */
- dt3155_fbuffer[ m ]->active_buf = pop_empty( m );
- dt3155_fbuffer[ m ]->even_happened = 0;
- dt3155_fbuffer[ m ]->even_stopped = 0;
-
- /* make sure there is no locked_buf JML 2/28/00 */
- dt3155_fbuffer[ m ]->locked_buf = -1;
-
- dt3155_status[ m ].mem_size =
- rambuff_acm - dt3155_status[ m ].mem_addr;
-
- /* setup the ready queue */
- dt3155_fbuffer[ m ]->ready_head = 0;
- dt3155_fbuffer[ m ]->ready_len = 0;
- printk("Available buffers for device %d: %d\n",
- m, dt3155_fbuffer[ m ]->nbuffers);
- }
-
- return 1;
-}
-
-/*****************************************************
- * internal_release_locked_buffer
- *
- * The internal function for releasing a locked buffer.
- * It assumes interrupts are turned off.
- *
- * m is minor number of device
- *****************************************************/
-static inline void internal_release_locked_buffer( int m )
-{
- /* Pointer into global structure for handling buffers */
- if ( dt3155_fbuffer[ m ]->locked_buf >= 0 )
- {
- push_empty( dt3155_fbuffer[ m ]->locked_buf, m );
- dt3155_fbuffer[ m ]->locked_buf = -1;
- }
-}
-
-
-/*****************************************************
- * dt3155_release_locked_buffer()
- * m is minor # of device
- *
- * The user function of the above.
- *
- *****************************************************/
-inline void dt3155_release_locked_buffer( int m )
-{
- unsigned long int flags;
- local_save_flags(flags);
- local_irq_disable();
- internal_release_locked_buffer(m);
- local_irq_restore(flags);
-}
-
-
-/*****************************************************
- * dt3155_flush()
- * m is minor # of device
- *
- *****************************************************/
-inline int dt3155_flush( int m )
-{
- int index;
- unsigned long int flags;
- local_save_flags(flags);
- local_irq_disable();
-
- internal_release_locked_buffer( m );
- dt3155_fbuffer[ m ]->empty_len = 0;
-
- for ( index = 0; index < dt3155_fbuffer[ m ]->nbuffers; index++ )
- push_empty( index, m );
-
- /* Make sure there is an active buffer there. */
- dt3155_fbuffer[ m ]->active_buf = pop_empty( m );
-
- dt3155_fbuffer[ m ]->even_happened = 0;
- dt3155_fbuffer[ m ]->even_stopped = 0;
-
- /* setup the ready queue */
- dt3155_fbuffer[ m ]->ready_head = 0;
- dt3155_fbuffer[ m ]->ready_len = 0;
-
- local_irq_restore(flags);
-
- return 0;
-}
-
-/*****************************************************
- * dt3155_get_ready_buffer()
- * m is minor # of device
- *
- * get_ready_buffer will grab the next chunk of data
- * if it is already there, otherwise it returns 0.
- * If the user has a buffer locked it will unlock
- * that buffer before returning the new one.
- *****************************************************/
-inline int dt3155_get_ready_buffer( int m )
-{
- int frame_index;
- unsigned long int flags;
- local_save_flags(flags);
- local_irq_disable();
-
-#ifdef DEBUG_QUES_A
- printques( m );
-#endif
-
- internal_release_locked_buffer( m );
-
- if (is_ready_buf_empty( m ))
- frame_index = -1;
- else
- {
- frame_index = pop_ready( m );
- dt3155_fbuffer[ m ]->locked_buf = frame_index;
- }
-
-#ifdef DEBUG_QUES_B
- printques( m );
-#endif
-
- local_irq_restore(flags);
-
- return frame_index;
-}
diff --git a/drivers/staging/dt3155/dt3155_isr.h b/drivers/staging/dt3155/dt3155_isr.h
deleted file mode 100644
index 7595cb1..0000000
--- a/drivers/staging/dt3155/dt3155_isr.h
+++ /dev/null
@@ -1,77 +0,0 @@
-/*
-
-Copyright 1996,2002 Gregory D. Hager, Alfred A. Rizzi, Noah J. Cowan,
- Jason Lapenta, Scott Smedley
-
-This file is part of the DT3155 Device Driver.
-
-The DT3155 Device Driver is free software; you can redistribute it
-and/or modify it under the terms of the GNU General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
-
-The DT3155 Device Driver 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.
-
-You should have received a copy of the GNU General Public License
-along with the DT3155 Device Driver; if not, write to the Free
-Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
-MA 02111-1307 USA
-
-
--- Changes --
-
- Date Programmer Description of changes made
- -------------------------------------------------------------------
- 03-Jul-2000 JML n/a
- 24-Jul-2002 SS GPL licence.
- 26-Oct-2009 SS Porting to 2.6.30 kernel.
-
--- notes --
-
-*/
-
-#ifndef DT3155_ISR_H
-#define DT3155_ISR_H
-
-extern struct dt3155_fbuffer_s *dt3155_fbuffer[MAXBOARDS];
-
-/* User functions for buffering */
-/* Initialize the buffering system. This should */
-/* be called prior to enabling interrupts */
-
-u32 dt3155_setup_buffers(u32 *allocatorAddr);
-
-/* Get the next frame of data if it is ready. Returns */
-/* zero if no data is ready. If there is data but */
-/* the user has a locked buffer, it will unlock that */
-/* buffer and return it to the free list. */
-
-int dt3155_get_ready_buffer(int minor);
-
-/* Return a locked buffer to the free list */
-
-void dt3155_release_locked_buffer(int minor);
-
-/* Flush the buffer system */
-int dt3155_flush(int minor);
-
-/**********************************
- * Simple array based que struct
- **********************************/
-
-bool are_empty_buffers(int minor);
-void push_empty(int index, int minor);
-
-int pop_empty(int minor);
-
-bool is_ready_buf_empty(int minor);
-bool is_ready_buf_full(int minor);
-
-void push_ready(int minor, int index);
-int pop_ready(int minor);
-
-
-#endif
--
1.7.0.14.g7e948
--
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