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-rw-r--r--drivers/media/video/cafe_ccic.c8
-rw-r--r--drivers/media/video/cx25840/cx25840-core.c9
-rw-r--r--drivers/media/video/cx25840/cx25840-core.h3
-rw-r--r--drivers/media/video/ov7670.c6
-rw-r--r--drivers/media/video/saa7115.c9
-rw-r--r--drivers/media/video/saa7127.c8
-rw-r--r--drivers/media/video/v4l2-common.c21
-rw-r--r--drivers/media/video/videodev.c10
-rw-r--r--include/linux/videodev2.h10
-rw-r--r--include/media/v4l2-chip-ident.h62
-rw-r--r--include/media/v4l2-common.h39
-rw-r--r--include/media/v4l2-dev.h2
12 files changed, 130 insertions, 57 deletions
diff --git a/drivers/media/video/cafe_ccic.c b/drivers/media/video/cafe_ccic.c
index 710c11a68296..4d4db7b2b611 100644
--- a/drivers/media/video/cafe_ccic.c
+++ b/drivers/media/video/cafe_ccic.c
@@ -22,6 +22,7 @@
#include <linux/spinlock.h>
#include <linux/videodev2.h>
#include <media/v4l2-common.h>
+#include <media/v4l2-chip-ident.h>
#include <linux/device.h>
#include <linux/wait.h>
#include <linux/list.h>
@@ -164,7 +165,7 @@ struct cafe_camera
struct tasklet_struct s_tasklet;
/* Current operating parameters */
- enum v4l2_chip_ident sensor_type; /* Currently ov7670 only */
+ u32 sensor_type; /* Currently ov7670 only */
struct v4l2_pix_format pix_format;
/* Locks */
@@ -818,6 +819,7 @@ static int __cafe_cam_reset(struct cafe_camera *cam)
*/
static int cafe_cam_init(struct cafe_camera *cam)
{
+ struct v4l2_chip_ident chip = { V4L2_CHIP_MATCH_I2C_ADDR, 0, 0, 0 };
int ret;
mutex_lock(&cam->s_mutex);
@@ -827,9 +829,11 @@ static int cafe_cam_init(struct cafe_camera *cam)
ret = __cafe_cam_reset(cam);
if (ret)
goto out;
- ret = __cafe_cam_cmd(cam, VIDIOC_INT_G_CHIP_IDENT, &cam->sensor_type);
+ chip.match_chip = cam->sensor->addr;
+ ret = __cafe_cam_cmd(cam, VIDIOC_G_CHIP_IDENT, &chip);
if (ret)
goto out;
+ cam->sensor_type = chip.ident;
// if (cam->sensor->addr != OV7xx0_SID) {
if (cam->sensor_type != V4L2_IDENT_OV7670) {
cam_err(cam, "Unsupported sensor type %d", cam->sensor->addr);
diff --git a/drivers/media/video/cx25840/cx25840-core.c b/drivers/media/video/cx25840/cx25840-core.c
index 774d2536555b..1757a588970f 100644
--- a/drivers/media/video/cx25840/cx25840-core.c
+++ b/drivers/media/video/cx25840/cx25840-core.c
@@ -35,6 +35,7 @@
#include <linux/videodev2.h>
#include <linux/i2c.h>
#include <media/v4l2-common.h>
+#include <media/v4l2-chip-ident.h>
#include <media/cx25840.h>
#include "cx25840-core.h"
@@ -827,9 +828,8 @@ static int cx25840_command(struct i2c_client *client, unsigned int cmd,
cx25840_initialize(client, 0);
break;
- case VIDIOC_INT_G_CHIP_IDENT:
- *(enum v4l2_chip_ident *)arg = state->id;
- break;
+ case VIDIOC_G_CHIP_IDENT:
+ return v4l2_chip_ident_i2c_client(client, arg, state->id, state->rev);
default:
return -EINVAL;
@@ -847,7 +847,7 @@ static int cx25840_detect_client(struct i2c_adapter *adapter, int address,
{
struct i2c_client *client;
struct cx25840_state *state;
- enum v4l2_chip_ident id;
+ u32 id;
u16 device_id;
/* Check if the adapter supports the needed features
@@ -902,6 +902,7 @@ static int cx25840_detect_client(struct i2c_adapter *adapter, int address,
state->audmode = V4L2_TUNER_MODE_LANG1;
state->vbi_line_offset = 8;
state->id = id;
+ state->rev = device_id;
i2c_attach_client(client);
diff --git a/drivers/media/video/cx25840/cx25840-core.h b/drivers/media/video/cx25840/cx25840-core.h
index 28049064dd7d..f4b56d2fd6b6 100644
--- a/drivers/media/video/cx25840/cx25840-core.h
+++ b/drivers/media/video/cx25840/cx25840-core.h
@@ -43,7 +43,8 @@ struct cx25840_state {
u32 audclk_freq;
int audmode;
int vbi_line_offset;
- enum v4l2_chip_ident id;
+ u32 id;
+ u32 rev;
int is_cx25836;
};
diff --git a/drivers/media/video/ov7670.c b/drivers/media/video/ov7670.c
index 5ed0adc4ca26..5234762c5427 100644
--- a/drivers/media/video/ov7670.c
+++ b/drivers/media/video/ov7670.c
@@ -15,6 +15,7 @@
#include <linux/delay.h>
#include <linux/videodev.h>
#include <media/v4l2-common.h>
+#include <media/v4l2-chip-ident.h>
#include <linux/i2c.h>
@@ -1270,9 +1271,8 @@ static int ov7670_command(struct i2c_client *client, unsigned int cmd,
void *arg)
{
switch (cmd) {
- case VIDIOC_INT_G_CHIP_IDENT:
- * (enum v4l2_chip_ident *) arg = V4L2_IDENT_OV7670;
- return 0;
+ case VIDIOC_G_CHIP_IDENT:
+ return v4l2_chip_ident_i2c_client(client, arg, V4L2_IDENT_OV7670, 0);
case VIDIOC_INT_RESET:
ov7670_reset(client);
diff --git a/drivers/media/video/saa7115.c b/drivers/media/video/saa7115.c
index 4d5bbd859de1..26c9b64c748c 100644
--- a/drivers/media/video/saa7115.c
+++ b/drivers/media/video/saa7115.c
@@ -45,6 +45,7 @@
#include <linux/i2c.h>
#include <linux/videodev2.h>
#include <media/v4l2-common.h>
+#include <media/v4l2-chip-ident.h>
#include <media/saa7115.h>
#include <asm/div64.h>
@@ -80,7 +81,7 @@ struct saa711x_state {
int sat;
int width;
int height;
- enum v4l2_chip_ident ident;
+ u32 ident;
u32 audclk_freq;
u32 crystal_freq;
u8 ucgc;
@@ -1232,7 +1233,6 @@ static void saa711x_decode_vbi_line(struct i2c_client *client,
static int saa711x_command(struct i2c_client *client, unsigned int cmd, void *arg)
{
struct saa711x_state *state = i2c_get_clientdata(client);
- int *iarg = arg;
/* ioctls to allow direct access to the saa7115 registers for testing */
switch (cmd) {
@@ -1437,9 +1437,8 @@ static int saa711x_command(struct i2c_client *client, unsigned int cmd, void *ar
}
#endif
- case VIDIOC_INT_G_CHIP_IDENT:
- *iarg = state->ident;
- break;
+ case VIDIOC_G_CHIP_IDENT:
+ return v4l2_chip_ident_i2c_client(client, arg, state->ident, 0);
default:
return -EINVAL;
diff --git a/drivers/media/video/saa7127.c b/drivers/media/video/saa7127.c
index 50dbb76d4a7f..9f986930490f 100644
--- a/drivers/media/video/saa7127.c
+++ b/drivers/media/video/saa7127.c
@@ -54,6 +54,7 @@
#include <linux/i2c.h>
#include <linux/videodev2.h>
#include <media/v4l2-common.h>
+#include <media/v4l2-chip-ident.h>
#include <media/saa7127.h>
static int debug = 0;
@@ -234,7 +235,7 @@ static struct i2c_reg_value saa7127_init_config_50hz[] = {
struct saa7127_state {
v4l2_std_id std;
- enum v4l2_chip_ident ident;
+ u32 ident;
enum saa7127_input_type input_type;
enum saa7127_output_type output_type;
int video_enable;
@@ -650,9 +651,8 @@ static int saa7127_command(struct i2c_client *client,
break;
}
- case VIDIOC_INT_G_CHIP_IDENT:
- *(enum v4l2_chip_ident *)arg = state->ident;
- break;
+ case VIDIOC_G_CHIP_IDENT:
+ return v4l2_chip_ident_i2c_client(client, arg, state->ident, 0);
default:
return -EINVAL;
diff --git a/drivers/media/video/v4l2-common.c b/drivers/media/video/v4l2-common.c
index 4a3635cd6f9e..49f1df74aa21 100644
--- a/drivers/media/video/v4l2-common.c
+++ b/drivers/media/video/v4l2-common.c
@@ -60,6 +60,7 @@
#include <linux/video_decoder.h>
#define __OLD_VIDIOC_ /* To allow fixing old calls*/
#include <media/v4l2-common.h>
+#include <media/v4l2-chip-ident.h>
#ifdef CONFIG_KMOD
#include <linux/kmod.h>
@@ -383,6 +384,8 @@ static const char *v4l2_ioctls[] = {
[_IOC_NR(VIDIOC_DBG_S_REGISTER)] = "VIDIOC_DBG_S_REGISTER",
[_IOC_NR(VIDIOC_DBG_G_REGISTER)] = "VIDIOC_DBG_G_REGISTER",
+
+ [_IOC_NR(VIDIOC_G_CHIP_IDENT)] = "VIDIOC_G_CHIP_IDENT",
#endif
};
#define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
@@ -413,7 +416,6 @@ static const char *v4l2_int_ioctls[] = {
[_IOC_NR(VIDIOC_INT_DECODE_VBI_LINE)] = "VIDIOC_INT_DECODE_VBI_LINE",
[_IOC_NR(VIDIOC_INT_S_VBI_DATA)] = "VIDIOC_INT_S_VBI_DATA",
[_IOC_NR(VIDIOC_INT_G_VBI_DATA)] = "VIDIOC_INT_G_VBI_DATA",
- [_IOC_NR(VIDIOC_INT_G_CHIP_IDENT)] = "VIDIOC_INT_G_CHIP_IDENT",
[_IOC_NR(VIDIOC_INT_I2S_CLOCK_FREQ)] = "VIDIOC_INT_I2S_CLOCK_FREQ",
[_IOC_NR(VIDIOC_INT_S_STANDBY)] = "VIDIOC_INT_S_STANDBY",
[_IOC_NR(VIDIOC_INT_S_AUDIO_ROUTING)] = "VIDIOC_INT_S_AUDIO_ROUTING",
@@ -981,6 +983,22 @@ int v4l2_chip_match_i2c_client(struct i2c_client *c, u32 match_type, u32 match_c
}
}
+int v4l2_chip_ident_i2c_client(struct i2c_client *c, struct v4l2_chip_ident *chip,
+ u32 ident, u32 revision)
+{
+ if (!v4l2_chip_match_i2c_client(c, chip->match_type, chip->match_chip))
+ return 0;
+ if (chip->ident == V4L2_IDENT_NONE) {
+ chip->ident = ident;
+ chip->revision = revision;
+ }
+ else {
+ chip->ident = V4L2_IDENT_AMBIGUOUS;
+ chip->revision = 0;
+ }
+ return 0;
+}
+
int v4l2_chip_match_host(u32 match_type, u32 match_chip)
{
switch (match_type) {
@@ -1015,6 +1033,7 @@ EXPORT_SYMBOL(v4l2_ctrl_query_fill);
EXPORT_SYMBOL(v4l2_ctrl_query_fill_std);
EXPORT_SYMBOL(v4l2_chip_match_i2c_client);
+EXPORT_SYMBOL(v4l2_chip_ident_i2c_client);
EXPORT_SYMBOL(v4l2_chip_match_host);
/*
diff --git a/drivers/media/video/videodev.c b/drivers/media/video/videodev.c
index 5c9f2116d7bf..fdfef0b53315 100644
--- a/drivers/media/video/videodev.c
+++ b/drivers/media/video/videodev.c
@@ -1532,6 +1532,16 @@ static int __video_do_ioctl(struct inode *inode, struct file *file,
break;
}
#endif
+ case VIDIOC_G_CHIP_IDENT:
+ {
+ struct v4l2_chip_ident *p=arg;
+ if (!vfd->vidioc_g_chip_ident)
+ break;
+ ret=vfd->vidioc_g_chip_ident(file, fh, p);
+ if (!ret)
+ dbgarg (cmd, "chip_ident=%u, revision=0x%x\n", p->ident, p->revision);
+ break;
+ }
} /* switch */
if (vfd->debug & V4L2_DEBUG_IOCTL_ARG) {
diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h
index a08ef2c16300..a25c2afa67e1 100644
--- a/include/linux/videodev2.h
+++ b/include/linux/videodev2.h
@@ -1398,6 +1398,14 @@ struct v4l2_register {
__u64 val;
};
+/* VIDIOC_G_CHIP_IDENT */
+struct v4l2_chip_ident {
+ __u32 match_type; /* Match type */
+ __u32 match_chip; /* Match this chip, meaning determined by match_type */
+ __u32 ident; /* chip identifier as specified in <media/v4l2-chip-ident.h> */
+ __u32 revision; /* chip revision, chip specific */
+};
+
/*
* I O C T L C O D E S F O R V I D E O D E V I C E S
*
@@ -1471,6 +1479,8 @@ struct v4l2_register {
/* Experimental, only implemented if CONFIG_VIDEO_ADV_DEBUG is defined */
#define VIDIOC_DBG_S_REGISTER _IOW ('V', 79, struct v4l2_register)
#define VIDIOC_DBG_G_REGISTER _IOWR ('V', 80, struct v4l2_register)
+
+#define VIDIOC_G_CHIP_IDENT _IOWR ('V', 81, struct v4l2_chip_ident)
#endif
#ifdef __OLD_VIDIOC_
diff --git a/include/media/v4l2-chip-ident.h b/include/media/v4l2-chip-ident.h
new file mode 100644
index 000000000000..f6686ce133d8
--- /dev/null
+++ b/include/media/v4l2-chip-ident.h
@@ -0,0 +1,62 @@
+/*
+ v4l2 chip identifiers header
+
+ This header provides a list of chip identifiers that can be returned
+ through the VIDIOC_G_CHIP_IDENT ioctl.
+
+ Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
+
+ This program 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.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef V4L2_CHIP_IDENT_H_
+#define V4L2_CHIP_IDENT_H_
+
+/* VIDIOC_G_CHIP_IDENT: identifies the actual chip installed on the board */
+enum {
+ /* general idents: reserved range 0-49 */
+ V4L2_IDENT_NONE = 0, /* No chip matched */
+ V4L2_IDENT_AMBIGUOUS = 1, /* Match too general, multiple chips matched */
+ V4L2_IDENT_UNKNOWN = 2, /* Chip found, but cannot identify */
+
+ /* module saa7110: just ident= 100 */
+ V4L2_IDENT_SAA7110 = 100,
+
+ /* module saa7111: just ident= 101 */
+ V4L2_IDENT_SAA7111 = 101,
+
+ /* module saa7115: reserved range 102-149 */
+ V4L2_IDENT_SAA7113 = 103,
+ V4L2_IDENT_SAA7114 = 104,
+ V4L2_IDENT_SAA7115 = 105,
+ V4L2_IDENT_SAA7118 = 108,
+
+ /* module saa7127: reserved range 150-199 */
+ V4L2_IDENT_SAA7127 = 157,
+ V4L2_IDENT_SAA7129 = 159,
+
+ /* module cx25840: reserved range 200-249 */
+ V4L2_IDENT_CX25836 = 236,
+ V4L2_IDENT_CX25837 = 237,
+ V4L2_IDENT_CX25840 = 240,
+ V4L2_IDENT_CX25841 = 241,
+ V4L2_IDENT_CX25842 = 242,
+ V4L2_IDENT_CX25843 = 243,
+
+ /* OmniVision sensors - range 250-299 */
+ V4L2_IDENT_OV7670 = 250,
+};
+
+#endif
diff --git a/include/media/v4l2-common.h b/include/media/v4l2-common.h
index abb9ce9b21b8..181a40c46a52 100644
--- a/include/media/v4l2-common.h
+++ b/include/media/v4l2-common.h
@@ -98,6 +98,8 @@ u32 v4l2_ctrl_next(const u32 * const *ctrl_classes, u32 id);
struct i2c_client; /* forward reference */
int v4l2_chip_match_i2c_client(struct i2c_client *c, u32 id_type, u32 chip_id);
+int v4l2_chip_ident_i2c_client(struct i2c_client *c, struct v4l2_chip_ident *chip,
+ u32 ident, u32 revision);
int v4l2_chip_match_host(u32 id_type, u32 chip_id);
/* ------------------------------------------------------------------------- */
@@ -114,39 +116,6 @@ struct v4l2_decode_vbi_line {
u32 type; /* VBI service type (V4L2_SLICED_*). 0 if no service found */
};
-/* VIDIOC_INT_G_CHIP_IDENT: identifies the actual chip installed on the board */
-enum v4l2_chip_ident {
- /* general idents: reserved range 0-49 */
- V4L2_IDENT_UNKNOWN = 0,
-
- /* module saa7110: just ident= 100 */
- V4L2_IDENT_SAA7110 = 100,
-
- /* module saa7111: just ident= 101 */
- V4L2_IDENT_SAA7111 = 101,
-
- /* module saa7115: reserved range 102-149 */
- V4L2_IDENT_SAA7113 = 103,
- V4L2_IDENT_SAA7114 = 104,
- V4L2_IDENT_SAA7115 = 105,
- V4L2_IDENT_SAA7118 = 108,
-
- /* module saa7127: reserved range 150-199 */
- V4L2_IDENT_SAA7127 = 157,
- V4L2_IDENT_SAA7129 = 159,
-
- /* module cx25840: reserved range 200-249 */
- V4L2_IDENT_CX25836 = 236,
- V4L2_IDENT_CX25837 = 237,
- V4L2_IDENT_CX25840 = 240,
- V4L2_IDENT_CX25841 = 241,
- V4L2_IDENT_CX25842 = 242,
- V4L2_IDENT_CX25843 = 243,
-
- /* OmniVision sensors - range 250-299 */
- V4L2_IDENT_OV7670 = 250,
-};
-
/* audio ioctls */
/* v4l device was opened in Radio mode, to be replaced by VIDIOC_INT_S_TUNER_MODE */
@@ -208,10 +177,6 @@ enum v4l2_chip_ident {
whether CC data from the first or second field should be obtained). */
#define VIDIOC_INT_G_VBI_DATA _IOWR('d', 106, struct v4l2_sliced_vbi_data)
-/* Returns the chip identifier or V4L2_IDENT_UNKNOWN if no identification can
- be made. */
-#define VIDIOC_INT_G_CHIP_IDENT _IOR ('d', 107, enum v4l2_chip_ident)
-
/* Sets I2S speed in bps. This is used to provide a standard way to select I2S
clock used by driving digital audio streams at some board designs.
Usual values for the frequency are 1024000 and 2048000.
diff --git a/include/media/v4l2-dev.h b/include/media/v4l2-dev.h
index 2693f3ae6ffb..d62847f846c2 100644
--- a/include/media/v4l2-dev.h
+++ b/include/media/v4l2-dev.h
@@ -317,6 +317,8 @@ struct video_device
int (*vidioc_s_register) (struct file *file, void *fh,
struct v4l2_register *reg);
#endif
+ int (*vidioc_g_chip_ident) (struct file *file, void *fh,
+ struct v4l2_chip_ident *chip);
#ifdef OBSOLETE_OWNER /* to be removed soon */
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.