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sensor/v4/imx307: fuse 4L and 2L drivers via dladdr self-reflection #189

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sensor/v4/imx307: fuse 4L and 2L drivers via dladdr self-reflection #189

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6 changes: 5 additions & 1 deletion libraries/sensor/hi3516ev200/sony_imx307/Makefile
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Original file line number Diff line number Diff line change
@@ -1,14 +1,18 @@
LIB_NAME := libsns_imx307

override CFLAGS += -DSDK_CODE=$(SDK_CODE) -fPIC -I$(CURDIR)/../../../../include
# -ldl: imx307_is_2lane_mode() uses dladdr() to read its own .so basename
# and flip between 4-lane and 2-lane register sequences. libsns_imx307_2L.so
# is shipped as a symlink to this binary.
override LDLIBS += -ldl

SRCS := $(wildcard *.c)
OBJS := $(SRCS:%.c=%.o) $(ASM_SRCS:%.S=%.o)

all: $(LIB_NAME).so $(LIB_NAME).a

$(LIB_NAME).so: $(OBJS)
$(CC) -shared -o $@ $(OBJS)
$(CC) -shared -o $@ $(OBJS) $(LDLIBS)

$(LIB_NAME).a: $(OBJS)
$(AR) -rcs $(LIB_NAME).a $(OBJS)
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16 changes: 15 additions & 1 deletion libraries/sensor/hi3516ev200/sony_imx307/imx307_cmos.c
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Expand Up @@ -105,7 +105,14 @@ extern int imx307_read_register(VI_PIPE ViPipe, int addr);
(1) /* make real fps less than stand fps because NVR require */

#define IMX307_VMAX_1080P30_LINEAR (1125 + IMX307_INCREASE_LINES)
#define IMX307_VMAX_1080P60TO30_WDR (1220 + IMX307_INCREASE_LINES) // 10bit
/* 2-lane and 4-lane WDR runs differ in VMAX baseline (datasheet pp.56/62):
* 4-lane → 1220, 2-lane → 1125. Picked at runtime by .so basename. */
extern int imx307_is_2lane_mode(void);
static inline GK_U32 imx307_vmax_1080p60to30_wdr(void)
{
return (imx307_is_2lane_mode() ? 1125 : 1220) + IMX307_INCREASE_LINES;
}
#define IMX307_VMAX_1080P60TO30_WDR (imx307_vmax_1080p60to30_wdr()) // 10bit
#define IMX307_VMAX_720P60_LINEAR (750)

// sensor fps mode
Expand Down Expand Up @@ -1599,6 +1606,13 @@ ISP_SNS_OBJ_S stSnsImx307Obj = {
.pfnSetInit = sensor_set_init
};

/* 2-lane build (libsns_imx307_2L.so) is a symlink to the 4-lane .so;
* streamers that dlsym this name resolve to the same registration object.
* Per-mode register sequences branch internally via imx307_is_2lane_mode(),
* which reads dli_fname through dladdr(). */
extern ISP_SNS_OBJ_S stSnsImx307_2l_Obj
__attribute__((alias("stSnsImx307Obj")));

#ifdef __cplusplus
#if __cplusplus
}
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