gpu: nvgpu: Add own platform data to enable host1x

Add gp10b platform data to enable sync point support.

Bug 1572701

Change-Id: Iaf03ecb8fb6b8bf4bb824e2a012c80dfe3f4fcae
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/592099
Reviewed-by: Automatic_Commit_Validation_User

drivers/gpu/nvgpu/gp10b/Makefile

@@ -12,3 +12,5 @@ obj-$(CONFIG_GK20A)  += \
 	gr_gp10b.o  \
 	mc_gp10b.o  \
 	hal_gp10b.o
+
+obj-$(CONFIG_TEGRA_GK20A) += platform_gp10b_tegra.o

drivers/gpu/nvgpu/gp10b/platform_gp10b_tegra.c

@@ -0,0 +1,99 @@
+/*
+ * drivers/video/tegra/host/gk20a/platform_gk20a_tegra.c
+ *
+ * GK20A Tegra Platform Interface
+ *
+ * Copyright (c) 2014, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ */
+
+#include <linux/of_platform.h>
+#include <linux/nvhost.h>
+#include <linux/debugfs.h>
+#include <linux/tegra-powergate.h>
+#include <linux/platform_data/tegra_edp.h>
+#include <uapi/linux/nvgpu.h>
+#include <linux/dma-buf.h>
+#include <linux/nvmap.h>
+#include <linux/tegra_pm_domains.h>
+#include "gk20a/platform_gk20a.h"
+#include "gk20a/gk20a.h"
+
+static int gp10b_tegra_probe(struct platform_device *pdev)
+{
+	struct gk20a_platform *platform = gk20a_get_platform(pdev);
+	struct device_node *np = pdev->dev.of_node;
+	struct device_node *host1x_node;
+	struct platform_device *host1x_pdev;
+	const __be32 *host1x_ptr;
+
+	host1x_ptr = of_get_property(np, "nvidia,host1x", NULL);
+	if (!host1x_ptr) {
+		gk20a_err(&pdev->dev, "host1x device not available");
+		return -ENOSYS;
+	}
+
+	host1x_node = of_find_node_by_phandle(be32_to_cpup(host1x_ptr));
+	host1x_pdev = of_find_device_by_node(host1x_node);
+	if (!host1x_pdev) {
+		gk20a_err(&pdev->dev, "host1x device not available");
+		return -ENOSYS;
+	}
+
+	platform->g->host1x_dev = host1x_pdev;
+
+	return 0;
+}
+
+static int gp10b_tegra_late_probe(struct platform_device *pdev)
+{
+	return 0;
+}
+
+static bool gp10b_tegra_is_railgated(struct platform_device *pdev)
+{
+	return false;
+}
+
+static int gp10b_tegra_railgate(struct platform_device *pdev)
+{
+	return 0;
+}
+
+static int gp10b_tegra_unrailgate(struct platform_device *pdev)
+{
+	return 0;
+}
+
+static int gp10b_tegra_suspend(struct device *dev)
+{
+	return 0;
+}
+
+struct gk20a_platform t18x_gpu_tegra_platform = {
+	.has_syncpoints = true,
+
+	.default_big_page_size	= SZ_128K,
+
+	.probe = gp10b_tegra_probe,
+	.late_probe = gp10b_tegra_late_probe,
+
+	/* power management callbacks */
+	.suspend = gp10b_tegra_suspend,
+	.railgate = gp10b_tegra_railgate,
+	.unrailgate = gp10b_tegra_unrailgate,
+	.is_railgated = gp10b_tegra_is_railgated,
+
+	.busy = gk20a_tegra_busy,
+	.idle = gk20a_tegra_idle,
+
+	.dump_platform_dependencies = gk20a_tegra_debug_dump,
+};

drivers/gpu/nvgpu/nvgpu_gpuid_t18x.h

@@ -27,4 +27,5 @@
 #define TEGRA_18x_GPU_COMPAT_GENERIC NVGPU_COMPAT_GENERIC_GP10B
 struct gpu_ops;
 extern int gp10b_init_hal(struct gpu_ops *);
+extern struct gk20a_platform t18x_gpu_tegra_platform;
 #endif