Enable the X-Gene reboot driver to use either the ACPI or the DTS resource using the platform driver method. Signed-off-by: Feng Kan <fkan@xxxxxxx> --- drivers/power/reset/xgene-reboot.c | 33 ++++++++++++++++++++++++++++----- 1 files changed, 28 insertions(+), 5 deletions(-) diff --git a/drivers/power/reset/xgene-reboot.c b/drivers/power/reset/xgene-reboot.c index 683238c..e3223c2 100644 --- a/drivers/power/reset/xgene-reboot.c +++ b/drivers/power/reset/xgene-reboot.c @@ -30,6 +30,8 @@ #include <linux/platform_device.h> #include <linux/stat.h> #include <linux/slab.h> +#include <linux/acpi.h> +#include <linux/efi.h> #include <asm/system_misc.h> struct xgene_reboot_context { @@ -59,6 +61,14 @@ static void xgene_restart(enum reboot_mode reboot_mode, const char *cmd) static int xgene_reboot_probe(struct platform_device *pdev) { struct xgene_reboot_context *ctx; + struct resource *res; + int rc; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + dev_err(&pdev->dev, "no resource address\n"); + return -ENODEV; + } ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL); if (!ctx) { @@ -66,20 +76,27 @@ static int xgene_reboot_probe(struct platform_device *pdev) return -ENODEV; } - ctx->csr = of_iomap(pdev->dev.of_node, 0); + ctx->csr = devm_ioremap_resource(&pdev->dev, res); if (!ctx->csr) { - devm_kfree(&pdev->dev, ctx); - dev_err(&pdev->dev, "can not map resource\n"); - return -ENODEV; + dev_err(&pdev->dev, "can't map CSR resource\n"); + rc = -ENOMEM; + goto error; } ctx->mask = 0x1; + dev_info(&pdev->dev, "X-Gene register reboot driver\n"); + ctx->pdev = pdev; arm_pm_restart = xgene_restart; xgene_restart_ctx = ctx; - return 0; + +error: + if (ctx->csr) + devm_iounmap(&pdev->dev, ctx->csr); + devm_kfree(&pdev->dev, ctx); + return rc; } static struct of_device_id xgene_reboot_of_match[] = { @@ -87,11 +104,17 @@ static struct of_device_id xgene_reboot_of_match[] = { {} }; +static const struct acpi_device_id xgene_reset_acpi_ids[] = { + { "APMC0D08", 0 }, + {} +}; + static struct platform_driver xgene_reboot_driver = { .probe = xgene_reboot_probe, .driver = { .name = "xgene-reboot", .of_match_table = xgene_reboot_of_match, + .acpi_match_table = ACPI_PTR(xgene_reset_acpi_ids), }, }; -- 1.7.6.1 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html