From: Richard Zhao richard.zhao@linaro.org
It adds device tree probe support for imx-audmux driver.
Signed-off-by: Richard Zhao richard.zhao@linaro.org Signed-off-by: Shawn Guo shawn.guo@linaro.org --- .../devicetree/bindings/sound/imx-audmux.txt | 13 +++++++++++++ sound/soc/fsl/imx-audmux.c | 14 ++++++++++++++ 2 files changed, 27 insertions(+), 0 deletions(-) create mode 100644 Documentation/devicetree/bindings/sound/imx-audmux.txt
diff --git a/Documentation/devicetree/bindings/sound/imx-audmux.txt b/Documentation/devicetree/bindings/sound/imx-audmux.txt new file mode 100644 index 0000000..215aa98 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/imx-audmux.txt @@ -0,0 +1,13 @@ +Freescale Digital Audio Mux (AUDMUX) device + +Required properties: +- compatible : "fsl,imx21-audmux" for AUDMUX version firstly used on i.MX21, + or "fsl,imx31-audmux" for the version firstly used on i.MX31. +- reg : Should contain AUDMUX registers location and length + +Example: + +audmux@021d8000 { + compatible = "fsl,imx6q-audmux", "fsl,imx31-audmux"; + reg = <0x021d8000 0x4000>; +}; diff --git a/sound/soc/fsl/imx-audmux.c b/sound/soc/fsl/imx-audmux.c index d7bf154..bcaa7ee 100644 --- a/sound/soc/fsl/imx-audmux.c +++ b/sound/soc/fsl/imx-audmux.c @@ -22,6 +22,8 @@ #include <linux/err.h> #include <linux/io.h> #include <linux/module.h> +#include <linux/of.h> +#include <linux/of_device.h> #include <linux/platform_device.h> #include <linux/slab.h>
@@ -197,6 +199,13 @@ static struct platform_device_id imx_audmux_ids[] = { }; MODULE_DEVICE_TABLE(platform, imx_audmux_ids);
+static const struct of_device_id imx_audmux_dt_ids[] = { + { .compatible = "fsl,imx21-audmux", .data = &imx_audmux_ids[0], }, + { .compatible = "fsl,imx31-audmux", .data = &imx_audmux_ids[1], }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, imx_audmux_dt_ids); + static unsigned char port_mapping[] = { 0x0, 0x4, 0x8, 0x10, 0x14, 0x1c, }; @@ -243,6 +252,8 @@ EXPORT_SYMBOL_GPL(imx_audmux_v2_configure_port); static int __init imx_audmux_probe(struct platform_device *pdev) { struct resource *res; + const struct of_device_id *of_id = + of_match_device(imx_audmux_dt_ids, &pdev->dev);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0); audmux_base = devm_request_and_ioremap(&pdev->dev, res); @@ -256,6 +267,8 @@ static int __init imx_audmux_probe(struct platform_device *pdev) audmux_clk = NULL; }
+ if (of_id) + pdev->id_entry = of_id->data; audmux_type = pdev->id_entry->driver_data; if (audmux_type == IMX31_AUDMUX) audmux_debugfs_init(); @@ -279,6 +292,7 @@ static struct platform_driver imx_audmux_driver = { .driver = { .name = DRIVER_NAME, .owner = THIS_MODULE, + .of_match_table = imx_audmux_dt_ids, } };