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Software i2c addr aliasing #326

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50 changes: 15 additions & 35 deletions hardware/realsense/tegra194-camera-d4xx-single.dtsi
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Original file line number Diff line number Diff line change
Expand Up @@ -105,7 +105,7 @@
maxim,gmsl-dser-device = <&dser>;
};

d4m0: d4m@1a {
ds5_0: ds5@1a {
status = "ok";
def-addr = <0x10>;
reg = <0x1a>;
Expand All @@ -120,7 +120,7 @@

port@0 {
reg = <0>;
d4m0_out: endpoint {
ds5_0_out: endpoint {
port-index = <0>;
bus-width = <2>;
remote-endpoint = <&csi_in0>;
Expand Down Expand Up @@ -149,19 +149,11 @@
num-lanes = <2>;
};
};
};

i2c@1 {
status = "ok";
reg = <0x3>; // line 18-19 of the I2C switch
#address-cells = <0x1>;
i2c-mux,deselect-on-exit;
#size-cells = <0x0>;

d4m1: d4m@1a {
ds5_1: ds5@1b {
status = "ok";
def-addr = <0x10>;
reg = <0x1a>;
reg = <0x1b>;
compatible = "intel,d4xx";
vcc-supply = <&p2822_vdd_1v8_cvb>;
cam-type = "RGB";
Expand All @@ -173,7 +165,7 @@

port@0 {
reg = <0>;
d4m1_out: endpoint {
ds5_1_out: endpoint {
port-index = <1>;
bus-width = <2>;
remote-endpoint = <&csi_in1>;
Expand Down Expand Up @@ -202,17 +194,11 @@
num-lanes = <2>;
};
};
};
i2c@2 {
reg = <0x4>; // line 4 of the I2C switch
#address-cells = <0x1>;
i2c-mux,deselect-on-exit;
#size-cells = <0x0>;

d4m2: d4m@1a {
ds5_2: ds5@1c {
status = "ok";
def-addr = <0x10>;
reg = <0x1a>;
reg = <0x1c>;
compatible = "intel,d4xx";
vcc-supply = <&p2822_vdd_1v8_cvb>;
cam-type = "Y8";
Expand All @@ -224,7 +210,7 @@

port@0 {
reg = <0>;
d4m2_out: endpoint {
ds5_2_out: endpoint {
port-index = <2>;
bus-width = <2>;
remote-endpoint = <&csi_in2>;
Expand Down Expand Up @@ -254,17 +240,11 @@
num-lanes = <2>;
};
};
};
i2c@3 {
reg = <0x5>; // line 4 of the I2C switch
#address-cells = <0x1>;
i2c-mux,deselect-on-exit;
#size-cells = <0x0>;

d4m3: d4m@1a {
ds5_3: ds5@1d {
status = "ok";
def-addr = <0x10>;
reg = <0x1a>;
reg = <0x1d>;
compatible = "intel,d4xx";
vcc-supply = <&p2822_vdd_1v8_cvb>;
cam-type = "IMU";
Expand All @@ -276,7 +256,7 @@

port@0 {
reg = <0>;
d4m3_out: endpoint {
ds5_3_out: endpoint {
port-index = <3>;
bus-width = <2>;
remote-endpoint = <&csi_in3>;
Expand Down Expand Up @@ -332,7 +312,7 @@
status = "ok";
port-index = <0>;
bus-width = <2>;
remote-endpoint = <&d4m0_out>;
remote-endpoint = <&ds5_0_out>;
};
};
port@1 {
Expand Down Expand Up @@ -362,7 +342,7 @@
status = "ok";
port-index = <0>;
bus-width = <2>;
remote-endpoint = <&d4m1_out>;
remote-endpoint = <&ds5_1_out>;
};
};
port@1 {
Expand Down Expand Up @@ -392,7 +372,7 @@
status = "ok";
port-index = <0>;
bus-width = <2>;
remote-endpoint = <&d4m2_out>;
remote-endpoint = <&ds5_2_out>;
};
};
port@1 {
Expand Down Expand Up @@ -421,7 +401,7 @@
status = "ok";
port-index = <0>;
bus-width = <2>;
remote-endpoint = <&d4m3_out>;
remote-endpoint = <&ds5_3_out>;
};
};
port@1 {
Expand Down
5 changes: 5 additions & 0 deletions kernel/realsense/d4xx.c
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Original file line number Diff line number Diff line change
Expand Up @@ -164,6 +164,9 @@
#define MAX9295_I2C_ADDR_DEF 0x40
#define D457_I2C_ADDR 0x10
#endif

#define DS5_FIXED_REG_ADDR 0x1a

enum ds5_mux_pad {
DS5_MUX_PAD_EXTERNAL,
DS5_MUX_PAD_DEPTH,
Expand Down Expand Up @@ -5688,6 +5691,8 @@ static int ds5_probe(struct i2c_client *c, const struct i2c_device_id *id)

state->client = c;
dev_warn(&c->dev, "Probing driver for D4xx\n");
// Alias all addresses to 0x1a
c->addr = DS5_FIXED_REG_ADDR;

state->variant = ds5_variants + id->driver_data;
#ifdef CONFIG_OF
Expand Down
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