@@ -32,6 +32,7 @@
#include <linux/fs.h>
#include <linux/vmalloc.h>
#include <linux/sched.h>
+#include <linux/seq_file.h>
#include <linux/slab.h>
#include <linux/proc_fs.h>
#include <linux/ctype.h>
@@ -244,72 +245,67 @@ static void rvfree(void *mem, unsigned long size)
#ifdef CONFIG_PROC_FS
static struct proc_dir_entry *cpia_proc_root=NULL;
-static int cpia_read_proc(char *page, char **start, off_t off,
- int count, int *eof, void *data)
+static int cpia_proc_show(struct seq_file *m, void *v)
{
- char *out = page;
- int len, tmp;
- struct cam_data *cam = data;
+ struct cam_data *cam = m->private;
+ int tmp;
char tmpstr[29];
- /* IMPORTANT: This output MUST be kept under PAGE_SIZE
- * or we need to get more sophisticated. */
-
- out += sprintf(out, "read-only\n-----------------------\n");
- out += sprintf(out, "V4L Driver version: %d.%d.%d\n",
+ seq_printf(m, "read-only\n-----------------------\n");
+ seq_printf(m, "V4L Driver version: %d.%d.%d\n",
CPIA_MAJ_VER, CPIA_MIN_VER, CPIA_PATCH_VER);
- out += sprintf(out, "CPIA Version: %d.%02d (%d.%d)\n",
+ seq_printf(m, "CPIA Version: %d.%02d (%d.%d)\n",
cam->params.version.firmwareVersion,
cam->params.version.firmwareRevision,
cam->params.version.vcVersion,
cam->params.version.vcRevision);
- out += sprintf(out, "CPIA PnP-ID: %04x:%04x:%04x\n",
+ seq_printf(m, "CPIA PnP-ID: %04x:%04x:%04x\n",
cam->params.pnpID.vendor, cam->params.pnpID.product,
cam->params.pnpID.deviceRevision);
- out += sprintf(out, "VP-Version: %d.%d %04x\n",
+ seq_printf(m, "VP-Version: %d.%d %04x\n",
cam->params.vpVersion.vpVersion,
cam->params.vpVersion.vpRevision,
cam->params.vpVersion.cameraHeadID);
- out += sprintf(out, "system_state: %#04x\n",
+ seq_printf(m, "system_state: %#04x\n",
cam->params.status.systemState);
- out += sprintf(out, "grab_state: %#04x\n",
+ seq_printf(m, "grab_state: %#04x\n",
cam->params.status.grabState);
- out += sprintf(out, "stream_state: %#04x\n",
+ seq_printf(m, "stream_state: %#04x\n",
cam->params.status.streamState);
- out += sprintf(out, "fatal_error: %#04x\n",
+ seq_printf(m, "fatal_error: %#04x\n",
cam->params.status.fatalError);
- out += sprintf(out, "cmd_error: %#04x\n",
+ seq_printf(m, "cmd_error: %#04x\n",
cam->params.status.cmdError);
- out += sprintf(out, "debug_flags: %#04x\n",
+ seq_printf(m, "debug_flags: %#04x\n",
cam->params.status.debugFlags);
- out += sprintf(out, "vp_status: %#04x\n",
+ seq_printf(m, "vp_status: %#04x\n",
cam->params.status.vpStatus);
- out += sprintf(out, "error_code: %#04x\n",
+ seq_printf(m, "error_code: %#04x\n",
cam->params.status.errorCode);
/* QX3 specific entries */
if (cam->params.qx3.qx3_detected) {
- out += sprintf(out, "button: %4d\n",
+ seq_printf(m, "button: %4d\n",
cam->params.qx3.button);
- out += sprintf(out, "cradled: %4d\n",
+ seq_printf(m, "cradled: %4d\n",
cam->params.qx3.cradled);
}
- out += sprintf(out, "video_size: %s\n",
+ seq_printf(m, "video_size: %s\n",
cam->params.format.videoSize == VIDEOSIZE_CIF ?
"CIF " : "QCIF");
- out += sprintf(out, "roi: (%3d, %3d) to (%3d, %3d)\n",
+ seq_printf(m, "roi: (%3d, %3d) to (%3d, %3d)\n",
cam->params.roi.colStart*8,
cam->params.roi.rowStart*4,
cam->params.roi.colEnd*8,
cam->params.roi.rowEnd*4);
- out += sprintf(out, "actual_fps: %3d\n", cam->fps);
- out += sprintf(out, "transfer_rate: %4dkB/s\n",
+ seq_printf(m, "actual_fps: %3d\n", cam->fps);
+ seq_printf(m, "transfer_rate: %4dkB/s\n",
cam->transfer_rate);
- out += sprintf(out, "\nread-write\n");
- out += sprintf(out, "----------------------- current min"
+ seq_printf(m, "\nread-write\n");
+ seq_printf(m, "----------------------- current min"
" max default comment\n");
- out += sprintf(out, "brightness: %8d %8d %8d %8d\n",
+ seq_printf(m, "brightness: %8d %8d %8d %8d\n",
cam->params.colourParams.brightness, 0, 100, 50);
if (cam->params.version.firmwareVersion == 1 &&
cam->params.version.firmwareRevision == 2)
@@ -318,26 +314,26 @@ static int cpia_read_proc(char *page, char **start, off_t off,
else
tmp = 96;
- out += sprintf(out, "contrast: %8d %8d %8d %8d"
+ seq_printf(m, "contrast: %8d %8d %8d %8d"
" steps of 8\n",
cam->params.colourParams.contrast, 0, tmp, 48);
- out += sprintf(out, "saturation: %8d %8d %8d %8d\n",
+ seq_printf(m, "saturation: %8d %8d %8d %8d\n",
cam->params.colourParams.saturation, 0, 100, 50);
tmp = (25000+5000*cam->params.sensorFps.baserate)/
(1<<cam->params.sensorFps.divisor);
- out += sprintf(out, "sensor_fps: %4d.%03d %8d %8d %8d\n",
+ seq_printf(m, "sensor_fps: %4d.%03d %8d %8d %8d\n",
tmp/1000, tmp%1000, 3, 30, 15);
- out += sprintf(out, "stream_start_line: %8d %8d %8d %8d\n",
+ seq_printf(m, "stream_start_line: %8d %8d %8d %8d\n",
2*cam->params.streamStartLine, 0,
cam->params.format.videoSize == VIDEOSIZE_CIF ? 288:144,
cam->params.format.videoSize == VIDEOSIZE_CIF ? 240:120);
- out += sprintf(out, "sub_sample: %8s %8s %8s %8s\n",
+ seq_printf(m, "sub_sample: %8s %8s %8s %8s\n",
cam->params.format.subSample == SUBSAMPLE_420 ?
"420" : "422", "420", "422", "422");
- out += sprintf(out, "yuv_order: %8s %8s %8s %8s\n",
+ seq_printf(m, "yuv_order: %8s %8s %8s %8s\n",
cam->params.format.yuvOrder == YUVORDER_YUYV ?
"YUYV" : "UYVY", "YUYV" , "UYVY", "YUYV");
- out += sprintf(out, "ecp_timing: %8s %8s %8s %8s\n",
+ seq_printf(m, "ecp_timing: %8s %8s %8s %8s\n",
cam->params.ecpTiming ? "slow" : "normal", "slow",
"normal", "normal");
@@ -346,13 +342,13 @@ static int cpia_read_proc(char *page, char **start, off_t off,
} else {
sprintf(tmpstr, "manual");
}
- out += sprintf(out, "color_balance_mode: %8s %8s %8s"
+ seq_printf(m, "color_balance_mode: %8s %8s %8s"
" %8s\n", tmpstr, "manual", "auto", "auto");
- out += sprintf(out, "red_gain: %8d %8d %8d %8d\n",
+ seq_printf(m, "red_gain: %8d %8d %8d %8d\n",
cam->params.colourBalance.redGain, 0, 212, 32);
- out += sprintf(out, "green_gain: %8d %8d %8d %8d\n",
+ seq_printf(m, "green_gain: %8d %8d %8d %8d\n",
cam->params.colourBalance.greenGain, 0, 212, 6);
- out += sprintf(out, "blue_gain: %8d %8d %8d %8d\n",
+ seq_printf(m, "blue_gain: %8d %8d %8d %8d\n",
cam->params.colourBalance.blueGain, 0, 212, 92);
if (cam->params.version.firmwareVersion == 1 &&
@@ -363,10 +359,10 @@ static int cpia_read_proc(char *page, char **start, off_t off,
sprintf(tmpstr, "%8d %8d %8d", 1, 8, 2);
if (cam->params.exposure.gainMode == 0)
- out += sprintf(out, "max_gain: unknown %28s"
+ seq_printf(m, "max_gain: unknown %28s"
" powers of 2\n", tmpstr);
else
- out += sprintf(out, "max_gain: %8d %28s"
+ seq_printf(m, "max_gain: %8d %28s"
" 1,2,4 or 8 \n",
1<<(cam->params.exposure.gainMode-1), tmpstr);
@@ -382,12 +378,12 @@ static int cpia_read_proc(char *page, char **start, off_t off,
sprintf(tmpstr, "unknown");
break;
}
- out += sprintf(out, "exposure_mode: %8s %8s %8s"
+ seq_printf(m, "exposure_mode: %8s %8s %8s"
" %8s\n", tmpstr, "manual", "auto", "auto");
- out += sprintf(out, "centre_weight: %8s %8s %8s %8s\n",
+ seq_printf(m, "centre_weight: %8s %8s %8s %8s\n",
(2-cam->params.exposure.centreWeight) ? "on" : "off",
"off", "on", "on");
- out += sprintf(out, "gain: %8d %8d max_gain %8d 1,2,4,8 possible\n",
+ seq_printf(m, "gain: %8d %8d max_gain %8d 1,2,4,8 possible\n",
1<<cam->params.exposure.gain, 1, 1);
if (cam->params.version.firmwareVersion == 1 &&
cam->params.version.firmwareRevision == 2)
@@ -396,7 +392,7 @@ static int cpia_read_proc(char *page, char **start, off_t off,
else
tmp = 510;
- out += sprintf(out, "fine_exp: %8d %8d %8d %8d\n",
+ seq_printf(m, "fine_exp: %8d %8d %8d %8d\n",
cam->params.exposure.fineExp*2, 0, tmp, 0);
if (cam->params.version.firmwareVersion == 1 &&
cam->params.version.firmwareRevision == 2)
@@ -405,127 +401,122 @@ static int cpia_read_proc(char *page, char **start, off_t off,
else
tmp = MAX_EXP;
- out += sprintf(out, "coarse_exp: %8d %8d %8d"
+ seq_printf(m, "coarse_exp: %8d %8d %8d"
" %8d\n", cam->params.exposure.coarseExpLo+
256*cam->params.exposure.coarseExpHi, 0, tmp, 185);
- out += sprintf(out, "red_comp: %8d %8d %8d %8d\n",
+ seq_printf(m, "red_comp: %8d %8d %8d %8d\n",
cam->params.exposure.redComp, COMP_RED, 255, COMP_RED);
- out += sprintf(out, "green1_comp: %8d %8d %8d %8d\n",
+ seq_printf(m, "green1_comp: %8d %8d %8d %8d\n",
cam->params.exposure.green1Comp, COMP_GREEN1, 255,
COMP_GREEN1);
- out += sprintf(out, "green2_comp: %8d %8d %8d %8d\n",
+ seq_printf(m, "green2_comp: %8d %8d %8d %8d\n",
cam->params.exposure.green2Comp, COMP_GREEN2, 255,
COMP_GREEN2);
- out += sprintf(out, "blue_comp: %8d %8d %8d %8d\n",
+ seq_printf(m, "blue_comp: %8d %8d %8d %8d\n",
cam->params.exposure.blueComp, COMP_BLUE, 255, COMP_BLUE);
- out += sprintf(out, "apcor_gain1: %#8x %#8x %#8x %#8x\n",
+ seq_printf(m, "apcor_gain1: %#8x %#8x %#8x %#8x\n",
cam->params.apcor.gain1, 0, 0xff, 0x1c);
- out += sprintf(out, "apcor_gain2: %#8x %#8x %#8x %#8x\n",
+ seq_printf(m, "apcor_gain2: %#8x %#8x %#8x %#8x\n",
cam->params.apcor.gain2, 0, 0xff, 0x1a);
- out += sprintf(out, "apcor_gain4: %#8x %#8x %#8x %#8x\n",
+ seq_printf(m, "apcor_gain4: %#8x %#8x %#8x %#8x\n",
cam->params.apcor.gain4, 0, 0xff, 0x2d);
- out += sprintf(out, "apcor_gain8: %#8x %#8x %#8x %#8x\n",
+ seq_printf(m, "apcor_gain8: %#8x %#8x %#8x %#8x\n",
cam->params.apcor.gain8, 0, 0xff, 0x2a);
- out += sprintf(out, "vl_offset_gain1: %8d %8d %8d %8d\n",
+ seq_printf(m, "vl_offset_gain1: %8d %8d %8d %8d\n",
cam->params.vlOffset.gain1, 0, 255, 24);
- out += sprintf(out, "vl_offset_gain2: %8d %8d %8d %8d\n",
+ seq_printf(m, "vl_offset_gain2: %8d %8d %8d %8d\n",
cam->params.vlOffset.gain2, 0, 255, 28);
- out += sprintf(out, "vl_offset_gain4: %8d %8d %8d %8d\n",
+ seq_printf(m, "vl_offset_gain4: %8d %8d %8d %8d\n",
cam->params.vlOffset.gain4, 0, 255, 30);
- out += sprintf(out, "vl_offset_gain8: %8d %8d %8d %8d\n",
+ seq_printf(m, "vl_offset_gain8: %8d %8d %8d %8d\n",
cam->params.vlOffset.gain8, 0, 255, 30);
- out += sprintf(out, "flicker_control: %8s %8s %8s %8s\n",
+ seq_printf(m, "flicker_control: %8s %8s %8s %8s\n",
cam->params.flickerControl.flickerMode ? "on" : "off",
"off", "on", "off");
- out += sprintf(out, "mains_frequency: %8d %8d %8d %8d"
+ seq_printf(m, "mains_frequency: %8d %8d %8d %8d"
" only 50/60\n",
cam->mainsFreq ? 60 : 50, 50, 60, 50);
if(cam->params.flickerControl.allowableOverExposure < 0)
- out += sprintf(out, "allowable_overexposure: %4dauto auto %8d auto\n",
+ seq_printf(m, "allowable_overexposure: %4dauto auto %8d auto\n",
-cam->params.flickerControl.allowableOverExposure,
255);
else
- out += sprintf(out, "allowable_overexposure: %8d auto %8d auto\n",
+ seq_printf(m, "allowable_overexposure: %8d auto %8d auto\n",
cam->params.flickerControl.allowableOverExposure,
255);
- out += sprintf(out, "compression_mode: ");
+ seq_printf(m, "compression_mode: ");
switch(cam->params.compression.mode) {
case CPIA_COMPRESSION_NONE:
- out += sprintf(out, "%8s", "none");
+ seq_printf(m, "%8s", "none");
break;
case CPIA_COMPRESSION_AUTO:
- out += sprintf(out, "%8s", "auto");
+ seq_printf(m, "%8s", "auto");
break;
case CPIA_COMPRESSION_MANUAL:
- out += sprintf(out, "%8s", "manual");
+ seq_printf(m, "%8s", "manual");
break;
default:
- out += sprintf(out, "%8s", "unknown");
+ seq_printf(m, "%8s", "unknown");
break;
}
- out += sprintf(out, " none,auto,manual auto\n");
- out += sprintf(out, "decimation_enable: %8s %8s %8s %8s\n",
+ seq_printf(m, " none,auto,manual auto\n");
+ seq_printf(m, "decimation_enable: %8s %8s %8s %8s\n",
cam->params.compression.decimation ==
DECIMATION_ENAB ? "on":"off", "off", "on",
"off");
- out += sprintf(out, "compression_target: %9s %9s %9s %9s\n",
+ seq_printf(m, "compression_target: %9s %9s %9s %9s\n",
cam->params.compressionTarget.frTargeting ==
CPIA_COMPRESSION_TARGET_FRAMERATE ?
"framerate":"quality",
"framerate", "quality", "quality");
- out += sprintf(out, "target_framerate: %8d %8d %8d %8d\n",
+ seq_printf(m, "target_framerate: %8d %8d %8d %8d\n",
cam->params.compressionTarget.targetFR, 1, 30, 15);
- out += sprintf(out, "target_quality: %8d %8d %8d %8d\n",
+ seq_printf(m, "target_quality: %8d %8d %8d %8d\n",
cam->params.compressionTarget.targetQ, 1, 64, 5);
- out += sprintf(out, "y_threshold: %8d %8d %8d %8d\n",
+ seq_printf(m, "y_threshold: %8d %8d %8d %8d\n",
cam->params.yuvThreshold.yThreshold, 0, 31, 6);
- out += sprintf(out, "uv_threshold: %8d %8d %8d %8d\n",
+ seq_printf(m, "uv_threshold: %8d %8d %8d %8d\n",
cam->params.yuvThreshold.uvThreshold, 0, 31, 6);
- out += sprintf(out, "hysteresis: %8d %8d %8d %8d\n",
+ seq_printf(m, "hysteresis: %8d %8d %8d %8d\n",
cam->params.compressionParams.hysteresis, 0, 255, 3);
- out += sprintf(out, "threshold_max: %8d %8d %8d %8d\n",
+ seq_printf(m, "threshold_max: %8d %8d %8d %8d\n",
cam->params.compressionParams.threshMax, 0, 255, 11);
- out += sprintf(out, "small_step: %8d %8d %8d %8d\n",
+ seq_printf(m, "small_step: %8d %8d %8d %8d\n",
cam->params.compressionParams.smallStep, 0, 255, 1);
- out += sprintf(out, "large_step: %8d %8d %8d %8d\n",
+ seq_printf(m, "large_step: %8d %8d %8d %8d\n",
cam->params.compressionParams.largeStep, 0, 255, 3);
- out += sprintf(out, "decimation_hysteresis: %8d %8d %8d %8d\n",
+ seq_printf(m, "decimation_hysteresis: %8d %8d %8d %8d\n",
cam->params.compressionParams.decimationHysteresis,
0, 255, 2);
- out += sprintf(out, "fr_diff_step_thresh: %8d %8d %8d %8d\n",
+ seq_printf(m, "fr_diff_step_thresh: %8d %8d %8d %8d\n",
cam->params.compressionParams.frDiffStepThresh,
0, 255, 5);
- out += sprintf(out, "q_diff_step_thresh: %8d %8d %8d %8d\n",
+ seq_printf(m, "q_diff_step_thresh: %8d %8d %8d %8d\n",
cam->params.compressionParams.qDiffStepThresh,
0, 255, 3);
- out += sprintf(out, "decimation_thresh_mod: %8d %8d %8d %8d\n",
+ seq_printf(m, "decimation_thresh_mod: %8d %8d %8d %8d\n",
cam->params.compressionParams.decimationThreshMod,
0, 255, 2);
/* QX3 specific entries */
if (cam->params.qx3.qx3_detected) {
- out += sprintf(out, "toplight: %8s %8s %8s %8s\n",
+ seq_printf(m, "toplight: %8s %8s %8s %8s\n",
cam->params.qx3.toplight ? "on" : "off",
"off", "on", "off");
- out += sprintf(out, "bottomlight: %8s %8s %8s %8s\n",
+ seq_printf(m, "bottomlight: %8s %8s %8s %8s\n",
cam->params.qx3.bottomlight ? "on" : "off",
"off", "on", "off");
}
- len = out - page;
- len -= off;
- if (len < count) {
- *eof = 1;
- if (len <= 0) return 0;
- } else
- len = count;
-
- *start = page + off;
- return len;
+ return 0;
}
+static int cpia_proc_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, cpia_proc_show, PDE(inode)->data);
+}
-static int match(char *checkstr, char **buffer, unsigned long *count,
+static int match(char *checkstr, char **buffer, size_t *count,
int *find_colon, int *err)
{
int ret, colon_found = 1;
@@ -551,7 +542,7 @@ static int match(char *checkstr, char **buffer, unsigned long *count,
return ret;
}
-static unsigned long int value(char **buffer, unsigned long *count, int *err)
+static unsigned long int value(char **buffer, size_t *count, int *err)
{
char *p;
unsigned long int ret;
@@ -565,10 +556,10 @@ static unsigned long int value(char **buffer, unsigned long *count, int *err)
return ret;
}
-static int cpia_write_proc(struct file *file, const char __user *buf,
- unsigned long count, void *data)
+static ssize_t cpia_proc_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *pos)
{
- struct cam_data *cam = data;
+ struct cam_data *cam = PDE(file->f_path.dentry->d_inode)->data;
struct cam_params new_params;
char *page, *buffer;
int retval, find_colon;
@@ -582,7 +573,7 @@ static int cpia_write_proc(struct file *file, const char __user *buf,
* from the comx driver
*/
if (count > PAGE_SIZE) {
- printk(KERN_ERR "count is %lu > %d!!!\n", count, (int)PAGE_SIZE);
+ printk(KERN_ERR "count is %zu > %d!!!\n", count, (int)PAGE_SIZE);
return -ENOSPC;
}
@@ -1340,6 +1331,15 @@ out:
return retval;
}
+static const struct file_operations cpia_proc_fops = {
+ .owner = THIS_MODULE,
+ .open = cpia_proc_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .write = cpia_proc_write,
+};
+
static void create_proc_cpia_cam(struct cam_data *cam)
{
char name[5 + 1 + 10 + 1];
@@ -1350,13 +1350,10 @@ static void create_proc_cpia_cam(struct cam_data *cam)
snprintf(name, sizeof(name), "video%d", cam->vdev.num);
- ent = create_proc_entry(name, S_IFREG|S_IRUGO|S_IWUSR, cpia_proc_root);
+ ent = proc_create_data(name, S_IRUGO|S_IWUSR, cpia_proc_root,
+ &cpia_proc_fops, cam);
if (!ent)
return;
-
- ent->data = cam;
- ent->read_proc = cpia_read_proc;
- ent->write_proc = cpia_write_proc;
/*
size of the proc entry is 3736 bytes for the standard webcam;
the extra features of the QX3 microscope add 189 bytes.