Merge "sensors: ssc: Add restart interface for SLPI" (71644d76) · Commits · e / devices / android_kernel_xiaomi_nabu

drivers/sensors/sensors_ssc.c

+47 −0

Original line number	Diff line number	Diff line
		@@ -32,6 +32,7 @@

		#define IMAGE_LOAD_CMD 1
		#define IMAGE_UNLOAD_CMD 0
		#define SSR_RESET_CMD 1
		#define CLASS_NAME "ssc"
		#define DRV_NAME "sensors"
		#define DRV_VERSION "2.00"
		@@ -53,6 +54,10 @@ static ssize_t slpi_boot_store(struct kobject *kobj,
		struct kobj_attribute *attr,
		const char *buf, size_t count);

		static ssize_t slpi_ssr_store(struct kobject *kobj,
		struct kobj_attribute *attr,
		const char *buf, size_t count);

		struct slpi_loader_private {
		void *pil_h;
		struct kobject *boot_slpi_obj;
		@@ -62,8 +67,12 @@ struct slpi_loader_private {
		static struct kobj_attribute slpi_boot_attribute =
		__ATTR(boot, 0220, NULL, slpi_boot_store);

		static struct kobj_attribute slpi_ssr_attribute =
		__ATTR(ssr, 0220, NULL, slpi_ssr_store);

		static struct attribute *attrs[] = {
		&slpi_boot_attribute.attr,
		&slpi_ssr_attribute.attr,
		NULL,
		};

		@@ -138,6 +147,44 @@ static void slpi_loader_unload(struct platform_device *pdev)
		}
		}

		static ssize_t slpi_ssr_store(struct kobject *kobj,
		struct kobj_attribute *attr,
		const char *buf,
		size_t count)
		{
		int ssr_cmd = 0;
		struct subsys_device *sns_dev = NULL;
		struct platform_device *pdev = slpi_private;
		struct slpi_loader_private *priv = NULL;

		pr_debug("%s: going to call slpi_ssr\n", __func__);

		if (kstrtoint(buf, 10, &ssr_cmd) < 0)
		return -EINVAL;

		if (ssr_cmd != SSR_RESET_CMD)
		return -EINVAL;

		priv = platform_get_drvdata(pdev);
		if (!priv)
		return -EINVAL;

		sns_dev = (struct subsys_device *)priv->pil_h;
		if (!sns_dev)
		return -EINVAL;

		dev_err(&pdev->dev, "Something went wrong with SLPI, restarting\n");

		/* subsystem_restart_dev has worker queue to handle */
		if (subsystem_restart_dev(sns_dev) != 0) {
		dev_err(&pdev->dev, "subsystem_restart_dev failed\n");
		return -EINVAL;
		}

		dev_dbg(&pdev->dev, "SLPI restarted\n");
		return count;
		}

		static ssize_t slpi_boot_store(struct kobject *kobj,
		struct kobj_attribute *attr,
		const char *buf,