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Message-ID: <1269789974.7294.1.camel@tuxtm-linux>
Date: Sun, 28 Mar 2010 18:26:14 +0300
From: Olimpiu Pascariu <olimpiu.pascariu@...il.com>
To: gregkh@...e.de, horms@...ge.net.au, hsweeten@...ionengravers.com,
ss@....gov.au
Cc: devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: Staging: dt3155: fixed some checkpatch.pl warnings and errors in
dt3155_drv.c
>>From cebbf20baee8df57b879a2b6dd1b9a04afe3e5e8 Mon Sep 17 00:00:00 2001
From: Olimpiu Pascariu <olimpiu.pascariu@...il.com>
Date: Sun, 28 Mar 2010 18:22:06 +0300
Subject: [PATCH 7/7] Staging: dt3155: fixed some checkpatch.pl warnings and errors in dt3155_drv.c
This is a patch to the dt3155_drv.c file that fixes up errors and warnings found by the checkpatch.pl tool
Signed-off-by: Olimpiu Pascariu <olimpiu.pascariu@...il.com>
---
drivers/staging/dt3155/dt3155_drv.c | 1220 +++++++++++++++++------------------
1 files changed, 583 insertions(+), 637 deletions(-)
diff --git a/drivers/staging/dt3155/dt3155_drv.c b/drivers/staging/dt3155/dt3155_drv.c
index a67c622..6adbeb2 100644
--- a/drivers/staging/dt3155/dt3155_drv.c
+++ b/drivers/staging/dt3155/dt3155_drv.c
@@ -1,59 +1,57 @@
/*
-
-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.
+ *
+ * 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
-
+ * 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)
-
-*/
+ *
+ * - NJC why are only two buffers allowed? (see isr, approx line 358)
+ */
extern void printques(int);
@@ -75,8 +73,8 @@ MODULE_LICENSE("GPL");
#include <linux/poll.h>
#include <linux/sched.h>
-#include <asm/io.h>
-#include <asm/uaccess.h>
+#include <linux/io.h>
+#include <linux/uaccess.h>
#include "dt3155.h"
#include "dt3155_drv.h"
@@ -96,19 +94,20 @@ int dt3155_errno = 0;
#define MAXPCI 16
#ifdef DT_DEBUG
-#define DT_3155_DEBUG_MSG(x,y) printk(x,y)
+#define DT_3155_DEBUG_MSG(x, y) printk(x, y)
#else
-#define DT_3155_DEBUG_MSG(x,y)
+#define DT_3155_DEBUG_MSG(x, y)
#endif
/* wait queue for interrupts */
-wait_queue_head_t dt3155_read_wait_queue[ MAXBOARDS ];
+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 */
+/* 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.
@@ -119,18 +118,21 @@ int dt3155_major = 0;
/* Global structures and variables */
/* Status of each device */
-struct dt3155_status_s dt3155_status[ MAXBOARDS ];
+struct dt3155_status_s dt3155_status[MAXBOARDS];
/* kernel logical address of the board */
-u8 *dt3155_lbase[ MAXBOARDS ] = { NULL
+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
+/* DT3155 registers
+ * kernel logical address of the
+ * buffer region
+ */
+u8 *dt3155_bbase = NULL;
+
+u32 dt3155_dev_open[MAXBOARDS] = {0
#if MAXBOARDS == 2
, 0
#endif
@@ -145,21 +147,21 @@ u32 unique_tag = 0;;
* to idle. I don't know why this works and the other way doesn't.
* (James Rose)
*/
-static void quick_stop (int minor)
+static void quick_stop(int minor)
{
- // TODO: scott was here
+ /* TODO: scott was here */
#if 1
- ReadMReg((dt3155_lbase[ minor ] + INT_CSR), int_csr_r.reg);
+ 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 );
+ WriteMReg((dt3155_lbase[minor] + INT_CSR), int_csr_r.reg);
- dt3155_status[ minor ].state &= ~(DT3155_STATE_STOP|0xff);
+ 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;
+ 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;
@@ -168,14 +170,14 @@ static void quick_stop (int minor)
}
-/*****************************************************
- * dt3155_isr() Interrupt service routien
+/*
+ * 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 )
+ */
+static inline void dt3155_isr(int irq, void *dev_id, struct pt_regs *regs)
{
int minor = -1;
int index;
@@ -183,298 +185,273 @@ static inline void dt3155_isr( int irq, void *dev_id, struct pt_regs *regs )
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;
- }
+ 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;
+ 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] + 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);
+ 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++;
+ 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;
}
- 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);
+ 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;
- }
+ /* 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;
- }
+ 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 );
+ 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 )
- {
+ /* 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();
+ local_save_flags(flags);
+ local_irq_disable();
#ifdef DEBUG_QUES_B
- printques( minor );
+ 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 );
- }
+ 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 );
+ printques(minor);
#endif
- dt3155_fbuffer[ minor ]->even_happened = 0;
+ dt3155_fbuffer[minor]->even_happened = 0;
- wake_up_interruptible( &dt3155_read_wait_queue[ minor ] );
+ wake_up_interruptible(&dt3155_read_wait_queue[minor]);
- local_irq_restore(flags);
+ 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);
+ /* 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);
}
- 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;
- /* 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);
- WriteI2C(dt3155_lbase[ minor ], ODD_CSR, i2c_odd_csr.reg );
-
- return;
- }
+ return;
+ }
/* If we get here, the Odd Field wasn't it either... */
- printk( "neither even nor odd. shared perhaps?\n");
+ 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;
+ 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),
+ WriteMReg((dt3155_lbase[minor] + EVEN_DMA_START),
even_dma_start_r);
- WriteMReg((dt3155_lbase[ minor ] + EVEN_DMA_STRIDE),
+ WriteMReg((dt3155_lbase[minor] + EVEN_DMA_STRIDE),
even_dma_stride_r);
- WriteMReg((dt3155_lbase[ minor ] + ODD_DMA_STRIDE),
+ 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;
+ 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),
+ WriteMReg((dt3155_lbase[minor] + EVEN_DMA_START),
even_dma_start_r);
- WriteMReg((dt3155_lbase[ minor ] + ODD_DMA_START),
+ WriteMReg((dt3155_lbase[minor] + ODD_DMA_START),
odd_dma_start_r);
- WriteMReg((dt3155_lbase[ minor ] + EVEN_DMA_STRIDE),
+ WriteMReg((dt3155_lbase[minor] + EVEN_DMA_STRIDE),
even_dma_stride_r);
- WriteMReg((dt3155_lbase[ minor ] + ODD_DMA_STRIDE),
+ 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 */
+ /* 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);
+ ReadI2C(dt3155_lbase[minor], CONFIG, &i2c_csr2.reg);
i2c_csr2.fld.HZ50 = FORMAT50HZ;
- WriteI2C(dt3155_lbase[ minor ], CONFIG, i2c_config.reg);
+ WriteI2C(dt3155_lbase[minor], CONFIG, i2c_config.reg);
/* enable busmaster chip, clear flags */
@@ -494,7 +471,7 @@ static void dt3155_init_isr(int minor)
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);
+ WriteMReg((dt3155_lbase[minor] + CSR1), csr1_r.reg);
/* Enable interrupts at the end of each field */
@@ -503,14 +480,14 @@ static void dt3155_init_isr(int minor)
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);
+ WriteMReg((dt3155_lbase[minor] + INT_CSR), int_csr_r.reg);
/* start internal BUSY bits */
- ReadI2C(dt3155_lbase[ minor ], CSR2, &i2c_csr2.reg);
+ 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);
+ WriteI2C(dt3155_lbase[minor], CSR2, i2c_csr2.reg);
/* Now its up to the interrupt routine!! */
@@ -518,10 +495,10 @@ static void dt3155_init_isr(int minor)
}
-/*****************************************************
+/*
* ioctl()
*
- *****************************************************/
+ */
static int dt3155_ioctl(struct inode *inode,
struct file *file,
unsigned int cmd,
@@ -529,33 +506,30 @@ static int dt3155_ioctl(struct inode *inode,
{
int minor = MINOR(inode->i_rdev); /* What device are we ioctl()'ing? */
- if ( minor >= MAXBOARDS || minor < 0 )
- return -ENODEV;
+ 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 (_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;
+ return -EBUSY;
{
struct dt3155_config_s tmp;
if (copy_from_user((void *)&tmp, (void *) arg, sizeof(tmp)))
- return -EFAULT;
+ return -EFAULT;
/* check for valid settings */
if (tmp.rows > DT3155_MAX_ROWS ||
tmp.cols > DT3155_MAX_COLS ||
@@ -563,79 +537,62 @@ static int dt3155_ioctl(struct inode *inode,
tmp.acq_mode != DT3155_MODE_FIELD) ||
(tmp.continuous != DT3155_SNAP &&
tmp.continuous != DT3155_ACQ))
- {
- return -EINVAL;
- }
+ return -EINVAL;
dt3155_status[minor].config = tmp;
}
return 0;
- }
- case DT3155_GET_CONFIG:
- {
+ case DT3155_GET_CONFIG:
if (copy_to_user((void *) arg, (void *) &dt3155_status[minor],
- sizeof(dt3155_status_t) ))
- return -EFAULT;
+ sizeof(dt3155_status_t)))
+ return -EFAULT;
return 0;
- }
- case DT3155_FLUSH: /* Flushes the buffers -- ensures fresh data */
- {
+ case DT3155_FLUSH: /* Flushes the buffers -- ensures fresh data */
if (dt3155_status[minor].state != DT3155_STATE_IDLE)
- return -EBUSY;
+ return -EBUSY;
return dt3155_flush(minor);
- }
- case DT3155_STOP:
- {
+ case DT3155_STOP:
if (dt3155_status[minor].state & DT3155_STATE_STOP ||
dt3155_status[minor].fbuffer.stop_acquire)
- return -EBUSY;
+ return -EBUSY;
if (dt3155_status[minor].state == DT3155_STATE_IDLE)
- return 0;
+ return 0;
quick_stop(minor);
if (copy_to_user((void *) arg, (void *) &dt3155_status[minor],
sizeof(dt3155_status_t)))
- return -EFAULT;
+ return -EFAULT;
return 0;
- }
- case DT3155_START:
- {
+ case DT3155_START:
if (dt3155_status[minor].state != DT3155_STATE_IDLE)
- return -EBUSY;
+ 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;
- }
+ dt3155_status[minor].state = DT3155_STATE_FLD;
else
- {
- dt3155_status[minor].state = DT3155_STATE_FRAME;
- }
+ dt3155_status[minor].state = DT3155_STATE_FRAME;
dt3155_init_isr(minor);
- if (copy_to_user( (void *) arg, (void *) &dt3155_status[minor],
+ if (copy_to_user((void *) arg, (void *) &dt3155_status[minor],
sizeof(dt3155_status_t)))
- return -EFAULT;
+ 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);
+ 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
@@ -643,8 +600,8 @@ static int dt3155_ioctl(struct inode *inode,
* 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)
+ */
+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);
@@ -652,7 +609,7 @@ static int dt3155_mmap (struct file * file, struct vm_area_struct * vma)
offset = vma->vm_pgoff << PAGE_SHIFT;
if (offset >= __pa(high_memory) || (file->f_flags & O_SYNC))
- vma->vm_flags |= VM_IO;
+ vma->vm_flags |= VM_IO;
/* Don't try to swap out physical pages.. */
vma->vm_flags |= VM_RESERVED;
@@ -661,64 +618,60 @@ static int dt3155_mmap (struct file * file, struct vm_area_struct * vma)
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;
+ 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;
- }
+ } 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)
+ */
+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_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;
+ 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_dev_open[minor] = 1 ;
- dt3155_flush( minor );
+ dt3155_flush(minor);
/* Disable ALL interrupts */
int_csr_r.reg = 0;
- WriteMReg( (dt3155_lbase[ minor ] + INT_CSR), int_csr_r.reg );
+ WriteMReg((dt3155_lbase[minor] + INT_CSR), int_csr_r.reg);
init_waitqueue_head(&(dt3155_read_wait_queue[minor]));
@@ -726,37 +679,32 @@ static int dt3155_open( struct inode* inode, struct file* filep)
}
-/*****************************************************
+/*
* close()
*
* Now decrement the use count.
*
- *****************************************************/
-static int dt3155_close( struct inode *inode, struct file *filep)
+ */
+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);
- }
- }
+ 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)
{
@@ -768,11 +716,10 @@ static ssize_t dt3155_read(struct file *filep, char __user *buf,
/* 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;
- }
+ 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.
@@ -780,39 +727,39 @@ static ssize_t dt3155_read(struct file *filep, char __user *buf,
* 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! */
+ * and the device is idle, then it could sit here forever!
+ */
- /* if (dt3155_status[minor].state == DT3155_STATE_IDLE)*/
- /* return -EBUSY;*/
+ /* 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;
+ if (filep->f_flags & O_NDELAY) {
+ frame_index = dt3155_get_ready_buffer(minor);
+ if (frame_index < 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];
@@ -821,50 +768,50 @@ static ssize_t dt3155_read(struct file *filep, char __user *buf,
put_user(offset, (unsigned int *) buf);
buf += sizeof(u32);
- put_user( dt3155_status[minor].fbuffer.frame_count, (unsigned int *) buf);
+ 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 -EFAULT;
return sizeof(dt3155_read_t);
}
-static unsigned int dt3155_poll (struct file * filp, poll_table *wait)
+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;
+ return POLLIN | POLLRDNORM;
- poll_wait (filp, &dt3155_read_wait_queue[minor], wait);
+ 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
+ */
+static const 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)
+ */
+static int find_PCI(void)
{
struct pci_dev *pci_dev = NULL;
int error, pci_index = 0;
@@ -873,68 +820,70 @@ static int find_PCI (void)
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;
+ (DT3155_VENDORID, DT3155_DEVICEID, pci_dev)) != NULL) {
+ pci_index++;
+
+ /* Is it really there? */
+ error = pci_read_config_word(pci_dev, PCI_CLASS_DEVICE, &rev_device);
+ if (error)
+ 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(KERN_DEBUG
+ "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;
}
- DT_3155_DEBUG_MSG("DT3155: Base address 0 for device is %lx \n", base);
- dt3155_status[pci_index-1].reg_addr = base;
+ /* Now, just go out and make sure that this/these device(s) is/are
+ * actually mapped into the kernel address space
+ */
+ error = pci_read_config_dword(pci_dev, PCI_BASE_ADDRESS_0,
+ (u32 *) &base);
+ if (error) {
+ printk("DT3155: Was not able to find device\n");
+ goto err;
+ }
- /* 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;
+ 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;
+ error = pci_read_config_byte(pci_dev, PCI_INTERRUPT_LINE, &irq);
+ if (error) {
+ 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]);
+ 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;
@@ -946,126 +895,125 @@ err:
u32 allocatorAddr = 0;
-/*****************************************************
+/*
* init_module()
- *****************************************************/
+ */
int init_module(void)
{
int index;
int rcode = 0;
- char *devname[ MAXBOARDS ];
+ char *devname[MAXBOARDS];
- devname[ 0 ] = "dt3155a";
+ devname[0] = "dt3155a";
#if MAXBOARDS == 2
- devname[ 1 ] = "dt3155b";
+ 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;
- }
+ 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;
- }
- }
+ * number of cards found in this machine.
+ */
+ rcode = find_PCI();
+ if (rcode != 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);
- }
+ rcode = dt3155_setup_buffers(&allocatorAddr);
+ if (rcode < 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;
- }
+ 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;
@@ -1075,21 +1023,19 @@ void cleanup_module(void)
/* removed DMA allocated with the allocator */
#ifdef STANDALONE_ALLOCATOR
if (allocatorAddr != 0)
- allocator_free_dma(allocatorAddr);
+ allocator_free_dma(allocatorAddr);
#else
allocator_cleanup();
#endif
- unregister_chrdev( dt3155_major, "dt3155" );
+ 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] );
+ 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]);
}
- }
+ }
}
-
--
1.7.0
--
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