1 files changed, 246 insertions, 0 deletions

diff --git a/drivers/gpu/host1x/dev.c b/drivers/gpu/host1x/dev.c
new file mode 100644
index 000000000000..28e28a23d444
--- /dev/null
+++ b/drivers/gpu/host1x/dev.c
@@ -0,0 +1,246 @@
+/*
+ * Tegra host1x driver
+ *
+ * Copyright (c) 2010-2013, NVIDIA Corporation.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/module.h>
+#include <linux/list.h>
+#include <linux/slab.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/clk.h>
+#include <linux/io.h>
+
+#define CREATE_TRACE_POINTS
+#include <trace/events/host1x.h>
+
+#include "dev.h"
+#include "intr.h"
+#include "channel.h"
+#include "debug.h"
+#include "hw/host1x01.h"
+#include "host1x_client.h"
+
+void host1x_set_drm_data(struct device *dev, void *data)
+{
+        struct host1x *host1x = dev_get_drvdata(dev);
+        host1x->drm_data = data;
+}
+
+void *host1x_get_drm_data(struct device *dev)
+{
+        struct host1x *host1x = dev_get_drvdata(dev);
+        return host1x->drm_data;
+}
+
+void host1x_sync_writel(struct host1x *host1x, u32 v, u32 r)
+{
+        void __iomem *sync_regs = host1x->regs + host1x->info->sync_offset;
+
+        writel(v, sync_regs + r);
+}
+
+u32 host1x_sync_readl(struct host1x *host1x, u32 r)
+{
+        void __iomem *sync_regs = host1x->regs + host1x->info->sync_offset;
+
+        return readl(sync_regs + r);
+}
+
+void host1x_ch_writel(struct host1x_channel *ch, u32 v, u32 r)
+{
+        writel(v, ch->regs + r);
+}
+
+u32 host1x_ch_readl(struct host1x_channel *ch, u32 r)
+{
+        return readl(ch->regs + r);
+}
+
+static const struct host1x_info host1x01_info = {
+        .nb_channels    = 8,
+        .nb_pts         = 32,
+        .nb_mlocks      = 16,
+        .nb_bases       = 8,
+        .init           = host1x01_init,
+        .sync_offset    = 0x3000,
+};
+
+static struct of_device_id host1x_of_match[] = {
+        { .compatible = "nvidia,tegra30-host1x", .data = &host1x01_info, },
+        { .compatible = "nvidia,tegra20-host1x", .data = &host1x01_info, },
+        { },
+};
+MODULE_DEVICE_TABLE(of, host1x_of_match);
+
+static int host1x_probe(struct platform_device *pdev)
+{
+        const struct of_device_id *id;
+        struct host1x *host;
+        struct resource *regs;
+        int syncpt_irq;
+        int err;
+
+        id = of_match_device(host1x_of_match, &pdev->dev);
+        if (!id)
+                return -EINVAL;
+
+        regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        if (!regs) {
+                dev_err(&pdev->dev, "failed to get registers\n");
+                return -ENXIO;
+        }
+
+        syncpt_irq = platform_get_irq(pdev, 0);
+        if (syncpt_irq < 0) {
+                dev_err(&pdev->dev, "failed to get IRQ\n");
+                return -ENXIO;
+        }
+
+        host = devm_kzalloc(&pdev->dev, sizeof(*host), GFP_KERNEL);
+        if (!host)
+                return -ENOMEM;
+
+        host->dev = &pdev->dev;
+        host->info = id->data;
+
+        /* set common host1x device data */
+        platform_set_drvdata(pdev, host);
+
+        host->regs = devm_ioremap_resource(&pdev->dev, regs);
+        if (IS_ERR(host->regs))
+                return PTR_ERR(host->regs);
+
+        if (host->info->init) {
+                err = host->info->init(host);
+                if (err)
+                        return err;
+        }
+
+        host->clk = devm_clk_get(&pdev->dev, NULL);
+        if (IS_ERR(host->clk)) {
+                dev_err(&pdev->dev, "failed to get clock\n");
+                err = PTR_ERR(host->clk);
+                return err;
+        }
+
+        err = host1x_channel_list_init(host);
+        if (err) {
+                dev_err(&pdev->dev, "failed to initialize channel list\n");
+                return err;
+        }
+
+        err = clk_prepare_enable(host->clk);
+        if (err < 0) {
+                dev_err(&pdev->dev, "failed to enable clock\n");
+                return err;
+        }
+
+        err = host1x_syncpt_init(host);
+        if (err) {
+                dev_err(&pdev->dev, "failed to initialize syncpts\n");
+                return err;
+        }
+
+        err = host1x_intr_init(host, syncpt_irq);
+        if (err) {
+                dev_err(&pdev->dev, "failed to initialize interrupts\n");
+                goto fail_deinit_syncpt;
+        }
+
+        host1x_debug_init(host);
+
+        host1x_drm_alloc(pdev);
+
+        return 0;
+
+fail_deinit_syncpt:
+        host1x_syncpt_deinit(host);
+        return err;
+}
+
+static int __exit host1x_remove(struct platform_device *pdev)
+{
+        struct host1x *host = platform_get_drvdata(pdev);
+
+        host1x_intr_deinit(host);
+        host1x_syncpt_deinit(host);
+        clk_disable_unprepare(host->clk);
+
+        return 0;
+}
+
+static struct platform_driver tegra_host1x_driver = {
+        .probe = host1x_probe,
+        .remove = __exit_p(host1x_remove),
+        .driver = {
+                .owner = THIS_MODULE,
+                .name = "tegra-host1x",
+                .of_match_table = host1x_of_match,
+        },
+};
+
+static int __init tegra_host1x_init(void)
+{
+        int err;
+
+        err = platform_driver_register(&tegra_host1x_driver);
+        if (err < 0)
+                return err;
+
+#ifdef CONFIG_DRM_TEGRA
+        err = platform_driver_register(&tegra_dc_driver);
+        if (err < 0)
+                goto unregister_host1x;
+
+        err = platform_driver_register(&tegra_hdmi_driver);
+        if (err < 0)
+                goto unregister_dc;
+
+        err = platform_driver_register(&tegra_gr2d_driver);
+        if (err < 0)
+                goto unregister_hdmi;
+#endif
+
+        return 0;
+
+#ifdef CONFIG_DRM_TEGRA
+unregister_hdmi:
+        platform_driver_unregister(&tegra_hdmi_driver);
+unregister_dc:
+        platform_driver_unregister(&tegra_dc_driver);
+unregister_host1x:
+        platform_driver_unregister(&tegra_host1x_driver);
+        return err;
+#endif
+}
+module_init(tegra_host1x_init);
+
+static void __exit tegra_host1x_exit(void)
+{
+#ifdef CONFIG_DRM_TEGRA
+        platform_driver_unregister(&tegra_gr2d_driver);
+        platform_driver_unregister(&tegra_hdmi_driver);
+        platform_driver_unregister(&tegra_dc_driver);
+#endif
+        platform_driver_unregister(&tegra_host1x_driver);
+}
+module_exit(tegra_host1x_exit);
+
+MODULE_AUTHOR("Thierry Reding <thierry.reding@avionic-design.de>");
+MODULE_AUTHOR("Terje Bergstrom <tbergstrom@nvidia.com>");
+MODULE_DESCRIPTION("Host1x driver for Tegra products");
+MODULE_LICENSE("GPL");