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    Subject[PATCH v4 3/5] rtc: omap: dt support
    Date
    enhance rtc-omap driver with DT capability

    Signed-off-by: Afzal Mohammed <afzal@ti.com>
    Acked-by: Sekhar Nori <nsekhar@ti.com>
    ---

    v4:
    Proper devicetree documentation

    v2:
    Use compatible as ti,da830-rtc instead of ti,am1808-rtc

    Documentation/devicetree/bindings/rtc/rtc-omap.txt | 17 +++++++++++++++++
    drivers/rtc/rtc-omap.c | 18 ++++++++++++++++++
    2 files changed, 35 insertions(+)
    create mode 100644 Documentation/devicetree/bindings/rtc/rtc-omap.txt

    diff --git a/Documentation/devicetree/bindings/rtc/rtc-omap.txt b/Documentation/devicetree/bindings/rtc/rtc-omap.txt
    new file mode 100644
    index 0000000..b47aa41
    --- /dev/null
    +++ b/Documentation/devicetree/bindings/rtc/rtc-omap.txt
    @@ -0,0 +1,17 @@
    +TI Real Time Clock
    +
    +Required properties:
    +- compatible: "ti,da830-rtc"
    +- reg: Address range of rtc register set
    +- interrupts: rtc timer, alarm interrupts in order
    +- interrupt-parent: phandle for the interrupt controller
    +
    +Example:
    +
    +rtc@1c23000 {
    + compatible = "ti,da830-rtc";
    + reg = <0x23000 0x1000>;
    + interrupts = <19
    + 19>;
    + interrupt-parent = <&intc>;
    +};
    diff --git a/drivers/rtc/rtc-omap.c b/drivers/rtc/rtc-omap.c
    index d948426..dff9ff4 100644
    --- a/drivers/rtc/rtc-omap.c
    +++ b/drivers/rtc/rtc-omap.c
    @@ -20,6 +20,8 @@
    #include <linux/rtc.h>
    #include <linux/bcd.h>
    #include <linux/platform_device.h>
    +#include <linux/of.h>
    +#include <linux/of_device.h>

    #include <asm/io.h>

    @@ -298,6 +300,8 @@ static struct rtc_class_ops omap_rtc_ops = {
    static int omap_rtc_alarm;
    static int omap_rtc_timer;

    +#define OMAP_RTC_DATA_DA830_IDX 1
    +
    static struct platform_device_id omap_rtc_devtype[] = {
    {
    .name = DRIVER_NAME,
    @@ -309,12 +313,25 @@ static struct platform_device_id omap_rtc_devtype[] = {
    };
    MODULE_DEVICE_TABLE(platform, omap_rtc_devtype);

    +static const struct of_device_id omap_rtc_of_match[] = {
    + { .compatible = "ti,da830-rtc",
    + .data = &omap_rtc_devtype[OMAP_RTC_DATA_DA830_IDX],
    + },
    + {},
    +};
    +MODULE_DEVICE_TABLE(of, omap_rtc_of_match);
    +
    static int __init omap_rtc_probe(struct platform_device *pdev)
    {
    struct resource *res, *mem;
    struct rtc_device *rtc;
    u8 reg, new_ctrl;
    const struct platform_device_id *id_entry;
    + const struct of_device_id *of_id;
    +
    + of_id = of_match_device(omap_rtc_of_match, &pdev->dev);
    + if (of_id)
    + pdev->id_entry = of_id->data;

    omap_rtc_timer = platform_get_irq(pdev, 0);
    if (omap_rtc_timer <= 0) {
    @@ -510,6 +527,7 @@ static struct platform_driver omap_rtc_driver = {
    .driver = {
    .name = DRIVER_NAME,
    .owner = THIS_MODULE,
    + .of_match_table = of_match_ptr(omap_rtc_of_match),
    },
    .id_table = omap_rtc_devtype,
    };
    --
    1.7.12


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