From 5f60ed0d840d53e9d65aa54e1a5365af8ce2769e Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Thu, 28 Feb 2013 08:08:01 +0100 Subject: [PATCH] drm/tegra: Add 3D support Initialize and power the 3D unit on Tegra20, Tegra30 and Tegra114 and register a channel with the Tegra DRM driver so that the unit can be used from userspace. Signed-off-by: Thierry Reding Signed-off-by: Thierry Reding --- drivers/gpu/drm/tegra/Makefile | 3 +- drivers/gpu/drm/tegra/drm.c | 10 + drivers/gpu/drm/tegra/drm.h | 1 + drivers/gpu/drm/tegra/gr3d.c | 337 +++++++++++++++++++++++++++++++++ drivers/gpu/drm/tegra/gr3d.h | 27 +++ include/linux/host1x.h | 1 + 6 files changed, 378 insertions(+), 1 deletion(-) create mode 100644 drivers/gpu/drm/tegra/gr3d.c create mode 100644 drivers/gpu/drm/tegra/gr3d.h diff --git a/drivers/gpu/drm/tegra/Makefile b/drivers/gpu/drm/tegra/Makefile index e1cdf1da2778..edc76abd58bb 100644 --- a/drivers/gpu/drm/tegra/Makefile +++ b/drivers/gpu/drm/tegra/Makefile @@ -9,6 +9,7 @@ tegra-drm-y := \ output.o \ rgb.o \ hdmi.o \ - gr2d.o + gr2d.o \ + gr3d.o obj-$(CONFIG_DRM_TEGRA) += tegra-drm.o diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c index 6f42f1692f29..26a2903879d8 100644 --- a/drivers/gpu/drm/tegra/drm.c +++ b/drivers/gpu/drm/tegra/drm.c @@ -615,10 +615,13 @@ static const struct of_device_id host1x_drm_subdevs[] = { { .compatible = "nvidia,tegra20-dc", }, { .compatible = "nvidia,tegra20-hdmi", }, { .compatible = "nvidia,tegra20-gr2d", }, + { .compatible = "nvidia,tegra20-gr3d", }, { .compatible = "nvidia,tegra30-dc", }, { .compatible = "nvidia,tegra30-hdmi", }, { .compatible = "nvidia,tegra30-gr2d", }, + { .compatible = "nvidia,tegra30-gr3d", }, { .compatible = "nvidia,tegra114-hdmi", }, + { .compatible = "nvidia,tegra114-gr3d", }, { /* sentinel */ } }; @@ -649,8 +652,14 @@ static int __init host1x_drm_init(void) if (err < 0) goto unregister_hdmi; + err = platform_driver_register(&tegra_gr3d_driver); + if (err < 0) + goto unregister_gr2d; + return 0; +unregister_gr2d: + platform_driver_unregister(&tegra_gr2d_driver); unregister_hdmi: platform_driver_unregister(&tegra_hdmi_driver); unregister_dc: @@ -663,6 +672,7 @@ module_init(host1x_drm_init); static void __exit host1x_drm_exit(void) { + platform_driver_unregister(&tegra_gr3d_driver); platform_driver_unregister(&tegra_gr2d_driver); platform_driver_unregister(&tegra_hdmi_driver); platform_driver_unregister(&tegra_dc_driver); diff --git a/drivers/gpu/drm/tegra/drm.h b/drivers/gpu/drm/tegra/drm.h index e3cd3ed438d5..b599fd4650ad 100644 --- a/drivers/gpu/drm/tegra/drm.h +++ b/drivers/gpu/drm/tegra/drm.h @@ -261,5 +261,6 @@ extern void tegra_fbdev_restore_mode(struct tegra_fbdev *fbdev); extern struct platform_driver tegra_dc_driver; extern struct platform_driver tegra_hdmi_driver; extern struct platform_driver tegra_gr2d_driver; +extern struct platform_driver tegra_gr3d_driver; #endif /* HOST1X_DRM_H */ diff --git a/drivers/gpu/drm/tegra/gr3d.c b/drivers/gpu/drm/tegra/gr3d.c new file mode 100644 index 000000000000..dc0f222d1323 --- /dev/null +++ b/drivers/gpu/drm/tegra/gr3d.c @@ -0,0 +1,337 @@ +/* + * Copyright (C) 2013 Avionic Design GmbH + * Copyright (C) 2013 NVIDIA Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include +#include +#include +#include +#include + +#include "drm.h" +#include "gem.h" +#include "gr3d.h" + +struct gr3d { + struct tegra_drm_client client; + struct host1x_channel *channel; + struct clk *clk_secondary; + struct clk *clk; + + DECLARE_BITMAP(addr_regs, GR3D_NUM_REGS); +}; + +static inline struct gr3d *to_gr3d(struct tegra_drm_client *client) +{ + return container_of(client, struct gr3d, client); +} + +static int gr3d_init(struct host1x_client *client) +{ + struct tegra_drm_client *drm = host1x_to_drm_client(client); + struct tegra_drm *tegra = dev_get_drvdata(client->parent); + struct gr3d *gr3d = to_gr3d(drm); + + gr3d->channel = host1x_channel_request(client->dev); + if (!gr3d->channel) + return -ENOMEM; + + client->syncpts[0] = host1x_syncpt_request(client->dev, 0); + if (!client->syncpts[0]) { + host1x_channel_free(gr3d->channel); + return -ENOMEM; + } + + return tegra_drm_register_client(tegra, drm); +} + +static int gr3d_exit(struct host1x_client *client) +{ + struct tegra_drm_client *drm = host1x_to_drm_client(client); + struct tegra_drm *tegra = dev_get_drvdata(client->parent); + struct gr3d *gr3d = to_gr3d(drm); + int err; + + err = tegra_drm_unregister_client(tegra, drm); + if (err < 0) + return err; + + host1x_syncpt_free(client->syncpts[0]); + host1x_channel_free(gr3d->channel); + + return 0; +} + +static const struct host1x_client_ops gr3d_client_ops = { + .init = gr3d_init, + .exit = gr3d_exit, +}; + +static int gr3d_open_channel(struct tegra_drm_client *client, + struct tegra_drm_context *context) +{ + struct gr3d *gr3d = to_gr3d(client); + + context->channel = host1x_channel_get(gr3d->channel); + if (!context->channel) + return -ENOMEM; + + return 0; +} + +static void gr3d_close_channel(struct tegra_drm_context *context) +{ + host1x_channel_put(context->channel); +} + +static int gr3d_is_addr_reg(struct device *dev, u32 class, u32 offset) +{ + struct gr3d *gr3d = dev_get_drvdata(dev); + + switch (class) { + case HOST1X_CLASS_HOST1X: + if (offset == 0x2b) + return 1; + + break; + + case HOST1X_CLASS_GR3D: + if (offset >= GR3D_NUM_REGS) + break; + + if (test_bit(offset, gr3d->addr_regs)) + return 1; + + break; + } + + return 0; +} + +static const struct tegra_drm_client_ops gr3d_ops = { + .open_channel = gr3d_open_channel, + .close_channel = gr3d_close_channel, + .is_addr_reg = gr3d_is_addr_reg, + .submit = tegra_drm_submit, +}; + +static const struct of_device_id tegra_gr3d_match[] = { + { .compatible = "nvidia,tegra114-gr3d" }, + { .compatible = "nvidia,tegra30-gr3d" }, + { .compatible = "nvidia,tegra20-gr3d" }, + { } +}; + +static const u32 gr3d_addr_regs[] = { + GR3D_IDX_ATTRIBUTE( 0), + GR3D_IDX_ATTRIBUTE( 1), + GR3D_IDX_ATTRIBUTE( 2), + GR3D_IDX_ATTRIBUTE( 3), + GR3D_IDX_ATTRIBUTE( 4), + GR3D_IDX_ATTRIBUTE( 5), + GR3D_IDX_ATTRIBUTE( 6), + GR3D_IDX_ATTRIBUTE( 7), + GR3D_IDX_ATTRIBUTE( 8), + GR3D_IDX_ATTRIBUTE( 9), + GR3D_IDX_ATTRIBUTE(10), + GR3D_IDX_ATTRIBUTE(11), + GR3D_IDX_ATTRIBUTE(12), + GR3D_IDX_ATTRIBUTE(13), + GR3D_IDX_ATTRIBUTE(14), + GR3D_IDX_ATTRIBUTE(15), + GR3D_IDX_INDEX_BASE, + GR3D_QR_ZTAG_ADDR, + GR3D_QR_CTAG_ADDR, + GR3D_QR_CZ_ADDR, + GR3D_TEX_TEX_ADDR( 0), + GR3D_TEX_TEX_ADDR( 1), + GR3D_TEX_TEX_ADDR( 2), + GR3D_TEX_TEX_ADDR( 3), + GR3D_TEX_TEX_ADDR( 4), + GR3D_TEX_TEX_ADDR( 5), + GR3D_TEX_TEX_ADDR( 6), + GR3D_TEX_TEX_ADDR( 7), + GR3D_TEX_TEX_ADDR( 8), + GR3D_TEX_TEX_ADDR( 9), + GR3D_TEX_TEX_ADDR(10), + GR3D_TEX_TEX_ADDR(11), + GR3D_TEX_TEX_ADDR(12), + GR3D_TEX_TEX_ADDR(13), + GR3D_TEX_TEX_ADDR(14), + GR3D_TEX_TEX_ADDR(15), + GR3D_DW_MEMORY_OUTPUT_ADDRESS, + GR3D_GLOBAL_SURFADDR( 0), + GR3D_GLOBAL_SURFADDR( 1), + GR3D_GLOBAL_SURFADDR( 2), + GR3D_GLOBAL_SURFADDR( 3), + GR3D_GLOBAL_SURFADDR( 4), + GR3D_GLOBAL_SURFADDR( 5), + GR3D_GLOBAL_SURFADDR( 6), + GR3D_GLOBAL_SURFADDR( 7), + GR3D_GLOBAL_SURFADDR( 8), + GR3D_GLOBAL_SURFADDR( 9), + GR3D_GLOBAL_SURFADDR(10), + GR3D_GLOBAL_SURFADDR(11), + GR3D_GLOBAL_SURFADDR(12), + GR3D_GLOBAL_SURFADDR(13), + GR3D_GLOBAL_SURFADDR(14), + GR3D_GLOBAL_SURFADDR(15), + GR3D_GLOBAL_SPILLSURFADDR, + GR3D_GLOBAL_SURFOVERADDR( 0), + GR3D_GLOBAL_SURFOVERADDR( 1), + GR3D_GLOBAL_SURFOVERADDR( 2), + GR3D_GLOBAL_SURFOVERADDR( 3), + GR3D_GLOBAL_SURFOVERADDR( 4), + GR3D_GLOBAL_SURFOVERADDR( 5), + GR3D_GLOBAL_SURFOVERADDR( 6), + GR3D_GLOBAL_SURFOVERADDR( 7), + GR3D_GLOBAL_SURFOVERADDR( 8), + GR3D_GLOBAL_SURFOVERADDR( 9), + GR3D_GLOBAL_SURFOVERADDR(10), + GR3D_GLOBAL_SURFOVERADDR(11), + GR3D_GLOBAL_SURFOVERADDR(12), + GR3D_GLOBAL_SURFOVERADDR(13), + GR3D_GLOBAL_SURFOVERADDR(14), + GR3D_GLOBAL_SURFOVERADDR(15), + GR3D_GLOBAL_SAMP01SURFADDR( 0), + GR3D_GLOBAL_SAMP01SURFADDR( 1), + GR3D_GLOBAL_SAMP01SURFADDR( 2), + GR3D_GLOBAL_SAMP01SURFADDR( 3), + GR3D_GLOBAL_SAMP01SURFADDR( 4), + GR3D_GLOBAL_SAMP01SURFADDR( 5), + GR3D_GLOBAL_SAMP01SURFADDR( 6), + GR3D_GLOBAL_SAMP01SURFADDR( 7), + GR3D_GLOBAL_SAMP01SURFADDR( 8), + GR3D_GLOBAL_SAMP01SURFADDR( 9), + GR3D_GLOBAL_SAMP01SURFADDR(10), + GR3D_GLOBAL_SAMP01SURFADDR(11), + GR3D_GLOBAL_SAMP01SURFADDR(12), + GR3D_GLOBAL_SAMP01SURFADDR(13), + GR3D_GLOBAL_SAMP01SURFADDR(14), + GR3D_GLOBAL_SAMP01SURFADDR(15), + GR3D_GLOBAL_SAMP23SURFADDR( 0), + GR3D_GLOBAL_SAMP23SURFADDR( 1), + GR3D_GLOBAL_SAMP23SURFADDR( 2), + GR3D_GLOBAL_SAMP23SURFADDR( 3), + GR3D_GLOBAL_SAMP23SURFADDR( 4), + GR3D_GLOBAL_SAMP23SURFADDR( 5), + GR3D_GLOBAL_SAMP23SURFADDR( 6), + GR3D_GLOBAL_SAMP23SURFADDR( 7), + GR3D_GLOBAL_SAMP23SURFADDR( 8), + GR3D_GLOBAL_SAMP23SURFADDR( 9), + GR3D_GLOBAL_SAMP23SURFADDR(10), + GR3D_GLOBAL_SAMP23SURFADDR(11), + GR3D_GLOBAL_SAMP23SURFADDR(12), + GR3D_GLOBAL_SAMP23SURFADDR(13), + GR3D_GLOBAL_SAMP23SURFADDR(14), + GR3D_GLOBAL_SAMP23SURFADDR(15), +}; + +static int gr3d_probe(struct platform_device *pdev) +{ + struct device_node *np = pdev->dev.of_node; + struct host1x_syncpt **syncpts; + struct gr3d *gr3d; + unsigned int i; + int err; + + gr3d = devm_kzalloc(&pdev->dev, sizeof(*gr3d), GFP_KERNEL); + if (!gr3d) + return -ENOMEM; + + syncpts = devm_kzalloc(&pdev->dev, sizeof(*syncpts), GFP_KERNEL); + if (!syncpts) + return -ENOMEM; + + gr3d->clk = devm_clk_get(&pdev->dev, NULL); + if (IS_ERR(gr3d->clk)) { + dev_err(&pdev->dev, "cannot get clock\n"); + return PTR_ERR(gr3d->clk); + } + + if (of_device_is_compatible(np, "nvidia,tegra30-gr3d")) { + gr3d->clk_secondary = devm_clk_get(&pdev->dev, "3d2"); + if (IS_ERR(gr3d->clk)) { + dev_err(&pdev->dev, "cannot get secondary clock\n"); + return PTR_ERR(gr3d->clk); + } + } + + err = tegra_powergate_sequence_power_up(TEGRA_POWERGATE_3D, gr3d->clk); + if (err < 0) { + dev_err(&pdev->dev, "failed to power up 3D unit\n"); + return err; + } + + if (gr3d->clk_secondary) { + err = tegra_powergate_sequence_power_up(TEGRA_POWERGATE_3D1, + gr3d->clk_secondary); + if (err < 0) { + dev_err(&pdev->dev, + "failed to power up secondary 3D unit\n"); + return err; + } + } + + INIT_LIST_HEAD(&gr3d->client.base.list); + gr3d->client.base.ops = &gr3d_client_ops; + gr3d->client.base.dev = &pdev->dev; + gr3d->client.base.class = HOST1X_CLASS_GR3D; + gr3d->client.base.syncpts = syncpts; + gr3d->client.base.num_syncpts = 1; + + INIT_LIST_HEAD(&gr3d->client.list); + gr3d->client.ops = &gr3d_ops; + + err = host1x_client_register(&gr3d->client.base); + if (err < 0) { + dev_err(&pdev->dev, "failed to register host1x client: %d\n", + err); + return err; + } + + /* initialize address register map */ + for (i = 0; i < ARRAY_SIZE(gr3d_addr_regs); i++) + set_bit(gr3d_addr_regs[i], gr3d->addr_regs); + + platform_set_drvdata(pdev, gr3d); + + return 0; +} + +static int gr3d_remove(struct platform_device *pdev) +{ + struct gr3d *gr3d = platform_get_drvdata(pdev); + int err; + + err = host1x_client_unregister(&gr3d->client.base); + if (err < 0) { + dev_err(&pdev->dev, "failed to unregister host1x client: %d\n", + err); + return err; + } + + if (gr3d->clk_secondary) { + tegra_powergate_power_off(TEGRA_POWERGATE_3D1); + clk_disable_unprepare(gr3d->clk_secondary); + } + + tegra_powergate_power_off(TEGRA_POWERGATE_3D); + clk_disable_unprepare(gr3d->clk); + + return 0; +} + +struct platform_driver tegra_gr3d_driver = { + .driver = { + .name = "tegra-gr3d", + .of_match_table = tegra_gr3d_match, + }, + .probe = gr3d_probe, + .remove = gr3d_remove, +}; diff --git a/drivers/gpu/drm/tegra/gr3d.h b/drivers/gpu/drm/tegra/gr3d.h new file mode 100644 index 000000000000..0c30a1351c83 --- /dev/null +++ b/drivers/gpu/drm/tegra/gr3d.h @@ -0,0 +1,27 @@ +/* + * Copyright (C) 2013 NVIDIA Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef TEGRA_GR3D_H +#define TEGRA_GR3D_H + +#define GR3D_IDX_ATTRIBUTE(x) (0x100 + (x) * 2) +#define GR3D_IDX_INDEX_BASE 0x121 +#define GR3D_QR_ZTAG_ADDR 0x415 +#define GR3D_QR_CTAG_ADDR 0x417 +#define GR3D_QR_CZ_ADDR 0x419 +#define GR3D_TEX_TEX_ADDR(x) (0x710 + (x)) +#define GR3D_DW_MEMORY_OUTPUT_ADDRESS 0x904 +#define GR3D_GLOBAL_SURFADDR(x) (0xe00 + (x)) +#define GR3D_GLOBAL_SPILLSURFADDR 0xe2a +#define GR3D_GLOBAL_SURFOVERADDR(x) (0xe30 + (x)) +#define GR3D_GLOBAL_SAMP01SURFADDR(x) (0xe50 + (x)) +#define GR3D_GLOBAL_SAMP23SURFADDR(x) (0xe60 + (x)) + +#define GR3D_NUM_REGS 0xe88 + +#endif diff --git a/include/linux/host1x.h b/include/linux/host1x.h index e62c61a4afa9..f5dd56fbdc3e 100644 --- a/include/linux/host1x.h +++ b/include/linux/host1x.h @@ -26,6 +26,7 @@ enum host1x_class { HOST1X_CLASS_HOST1X = 0x1, HOST1X_CLASS_GR2D = 0x51, HOST1X_CLASS_GR2D_SB = 0x52, + HOST1X_CLASS_GR3D = 0x60, }; struct host1x_client; -- 2.20.1