On 02/11/2014 01:14 PM, Hans Verkuil wrote:
On 02/11/14 13:08, Laurent Pinchart wrote:
Hi Hans,
On Tuesday 11 February 2014 10:23:03 Hans Verkuil wrote:
On 02/05/14 17:42, Laurent Pinchart wrote:
Parse the device tree node to populate platform data.
Cc: devicetree@xxxxxxxxxxxxxxx
Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
---
.../devicetree/bindings/media/i2c/adv7604.txt | 56 ++++++++++++
drivers/media/i2c/adv7604.c | 101 ++++++++++++++--
2 files changed, 143 insertions(+), 14 deletions(-)
create mode 100644
Documentation/devicetree/bindings/media/i2c/adv7604.txt
diff --git a/Documentation/devicetree/bindings/media/i2c/adv7604.txt
b/Documentation/devicetree/bindings/media/i2c/adv7604.txt new file mode
100644
index 0000000..0845c50
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/i2c/adv7604.txt
@@ -0,0 +1,56 @@
+* Analog Devices ADV7604/11 video decoder with HDMI receiver
+
+The ADV7604 and ADV7611 are multiformat video decoders with an integrated
HDMI +receiver. The ADV7604 has four multiplexed HDMI inputs and one
analog input, +and the ADV7611 has one HDMI input and no analog input.
+
+Required Properties:
+
+ - compatible: Must contain one of the following
+ - "adi,adv7604" for the ADV7604
+ - "adi,adv7611" for the ADV7611
+
+ - reg: I2C slave address
+
+ - hpd-gpios: References to the GPIOs that control the HDMI hot-plug
+ detection pins, one per HDMI input. The active flag indicates the
GPIO
+ level that enables hot-plug detection.
+
+Optional Properties:
+
+ - reset-gpios: Reference to the GPIO connected to the device's reset
pin. +
+ - adi,default-input: Index of the input to be configured as default.
Valid + values are 0..5 for the ADV7604 and 0 for the ADV7611.
+
+ - adi,disable-power-down: Boolean property. When set forces the device
to + ignore the power-down pin. The property is valid for the ADV7604
only as + the ADV7611 has no power-down pin.
+
+ - adi,disable-cable-reset: Boolean property. When set disables the HDMI
+ receiver automatic reset when the HDMI cable is unplugged.
+
+Example:
+
+ hdmi_receiver@4c {
+ compatible = "adi,adv7611";
+ reg = <0x4c>;
+
+ reset-gpios = <&ioexp 0 GPIO_ACTIVE_LOW>;
+ hpd-gpios = <&ioexp 2 GPIO_ACTIVE_HIGH>;
+
+ adi,default-input = <0>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ };
+ port@1 {
+ reg = <1>;
+ hdmi_in: endpoint {
+ remote-endpoint = <&ccdc_in>;
+ };
+ };
+ };
diff --git a/drivers/media/i2c/adv7604.c b/drivers/media/i2c/adv7604.c
index e586c1c..cd8a2dc 100644
--- a/drivers/media/i2c/adv7604.c
+++ b/drivers/media/i2c/adv7604.c
@@ -32,6 +32,7 @@
#include <linux/i2c.h>
#include <linux/kernel.h>
#include <linux/module.h>
+#include <linux/of_gpio.h>
#include <linux/slab.h>
#include <linux/v4l2-dv-timings.h>
#include <linux/videodev2.h>
@@ -2641,13 +2642,83 @@ static const struct adv7604_chip_info
adv7604_chip_info[] = {>
},
};
+static struct i2c_device_id adv7604_i2c_id[] = {
+ { "adv7604", (kernel_ulong_t)&adv7604_chip_info[ADV7604] },
+ { "adv7611", (kernel_ulong_t)&adv7604_chip_info[ADV7611] },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, adv7604_i2c_id);
+
+static struct of_device_id adv7604_of_id[] = {
+ { .compatible = "adi,adv7604", .data = &adv7604_chip_info[ADV7604] },
+ { .compatible = "adi,adv7611", .data = &adv7604_chip_info[ADV7611] },
+ { }
+};
+MODULE_DEVICE_TABLE(of, adv7604_of_id);
+
+static int adv7604_parse_dt(struct adv7604_state *state)
Put this under #ifdef CONFIG_OF.
#ifdef CONFIG_OF has been discouraged. I'll add an IS_ENABLED(CONFIG_OF) to
condition the call of adv7604_parse_dt() and let the compiler optimize the
function out, but I've been recommended to fix compilation errors instead of
using conditional compilation.
It fails to compile if CONFIG_OF is not set (as it is in my case since this
driver is used with a PCIe card).
What's the compilation failure ?
drivers/media/i2c/adv7604.c: In function ‘adv7604_parse_dt’:
drivers/media/i2c/adv7604.c:2671:48: warning: dereferencing ‘void *’ pointer [enabled by default]
state->info = of_match_node(adv7604_of_id, np)->data;
^
drivers/media/i2c/adv7604.c:2671:48: error: request for member ‘data’ in something not a structure or union
make[3]: *** [drivers/media/i2c/adv7604.o] Error 1
That looks like a bug in the stubbed out version of of_match_node(). It
should be a inline function with a return type, rather than a macro.
- Lars
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