mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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edec4af4c3
This commit adds support for the HDMI output on the Tegra20 SoC. Only one such output is available, but it can be driven by either of the two display controllers. A lot of work on this patch has been contributed by NVIDIA's Mark Zhang <markz@nvidia.com> and many other people at NVIDIA were very helpful in getting the HDMI support and surrounding infrastructure to work. Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de> Tested-by: Stephen Warren <swarren@nvidia.com> Acked-by: Mark Zhang <markz@nvidia.com> Reviewed-by: Mark Zhang <markz@nvidia.com> Tested-by: Mark Zhang <markz@nvidia.com> Tested-and-acked-by: Alexandre Courbot <acourbot@nvidia.com> Acked-by: Terje Bergstrom <tbergstrom@nvidia.com> Tested-by: Terje Bergstrom <tbergstrom@nvidia.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
235 lines
6.1 KiB
C
235 lines
6.1 KiB
C
/*
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* Copyright (C) 2012 Avionic Design GmbH
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* Copyright (C) 2012 NVIDIA CORPORATION. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef TEGRA_DRM_H
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#define TEGRA_DRM_H 1
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#include <drm/drmP.h>
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#include <drm/drm_crtc_helper.h>
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#include <drm/drm_edid.h>
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#include <drm/drm_fb_helper.h>
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#include <drm/drm_gem_cma_helper.h>
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#include <drm/drm_fb_cma_helper.h>
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#include <drm/drm_fixed.h>
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struct tegra_framebuffer {
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struct drm_framebuffer base;
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struct drm_gem_cma_object *obj;
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};
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static inline struct tegra_framebuffer *to_tegra_fb(struct drm_framebuffer *fb)
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{
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return container_of(fb, struct tegra_framebuffer, base);
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}
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struct host1x {
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struct drm_device *drm;
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struct device *dev;
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void __iomem *regs;
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struct clk *clk;
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int syncpt;
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int irq;
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struct mutex drm_clients_lock;
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struct list_head drm_clients;
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struct list_head drm_active;
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struct mutex clients_lock;
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struct list_head clients;
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struct drm_fbdev_cma *fbdev;
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struct tegra_framebuffer fb;
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};
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struct host1x_client;
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struct host1x_client_ops {
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int (*drm_init)(struct host1x_client *client, struct drm_device *drm);
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int (*drm_exit)(struct host1x_client *client);
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};
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struct host1x_client {
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struct host1x *host1x;
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struct device *dev;
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const struct host1x_client_ops *ops;
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struct list_head list;
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};
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extern int host1x_drm_init(struct host1x *host1x, struct drm_device *drm);
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extern int host1x_drm_exit(struct host1x *host1x);
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extern int host1x_register_client(struct host1x *host1x,
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struct host1x_client *client);
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extern int host1x_unregister_client(struct host1x *host1x,
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struct host1x_client *client);
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struct tegra_output;
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struct tegra_dc {
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struct host1x_client client;
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struct host1x *host1x;
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struct device *dev;
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struct drm_crtc base;
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int pipe;
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struct clk *clk;
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void __iomem *regs;
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int irq;
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struct tegra_output *rgb;
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struct list_head list;
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struct drm_info_list *debugfs_files;
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struct drm_minor *minor;
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struct dentry *debugfs;
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};
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static inline struct tegra_dc *host1x_client_to_dc(struct host1x_client *client)
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{
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return container_of(client, struct tegra_dc, client);
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}
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static inline struct tegra_dc *to_tegra_dc(struct drm_crtc *crtc)
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{
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return container_of(crtc, struct tegra_dc, base);
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}
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static inline void tegra_dc_writel(struct tegra_dc *dc, unsigned long value,
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unsigned long reg)
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{
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writel(value, dc->regs + (reg << 2));
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}
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static inline unsigned long tegra_dc_readl(struct tegra_dc *dc,
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unsigned long reg)
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{
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return readl(dc->regs + (reg << 2));
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}
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struct tegra_output_ops {
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int (*enable)(struct tegra_output *output);
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int (*disable)(struct tegra_output *output);
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int (*setup_clock)(struct tegra_output *output, struct clk *clk,
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unsigned long pclk);
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int (*check_mode)(struct tegra_output *output,
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struct drm_display_mode *mode,
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enum drm_mode_status *status);
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};
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enum tegra_output_type {
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TEGRA_OUTPUT_RGB,
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TEGRA_OUTPUT_HDMI,
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};
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struct tegra_output {
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struct device_node *of_node;
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struct device *dev;
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const struct tegra_output_ops *ops;
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enum tegra_output_type type;
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struct i2c_adapter *ddc;
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const struct edid *edid;
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unsigned int hpd_irq;
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int hpd_gpio;
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struct drm_encoder encoder;
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struct drm_connector connector;
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};
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static inline struct tegra_output *encoder_to_output(struct drm_encoder *e)
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{
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return container_of(e, struct tegra_output, encoder);
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}
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static inline struct tegra_output *connector_to_output(struct drm_connector *c)
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{
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return container_of(c, struct tegra_output, connector);
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}
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static inline int tegra_output_enable(struct tegra_output *output)
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{
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if (output && output->ops && output->ops->enable)
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return output->ops->enable(output);
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return output ? -ENOSYS : -EINVAL;
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}
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static inline int tegra_output_disable(struct tegra_output *output)
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{
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if (output && output->ops && output->ops->disable)
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return output->ops->disable(output);
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return output ? -ENOSYS : -EINVAL;
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}
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static inline int tegra_output_setup_clock(struct tegra_output *output,
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struct clk *clk, unsigned long pclk)
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{
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if (output && output->ops && output->ops->setup_clock)
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return output->ops->setup_clock(output, clk, pclk);
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return output ? -ENOSYS : -EINVAL;
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}
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static inline int tegra_output_check_mode(struct tegra_output *output,
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struct drm_display_mode *mode,
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enum drm_mode_status *status)
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{
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if (output && output->ops && output->ops->check_mode)
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return output->ops->check_mode(output, mode, status);
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return output ? -ENOSYS : -EINVAL;
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}
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/* from rgb.c */
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extern int tegra_dc_rgb_probe(struct tegra_dc *dc);
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extern int tegra_dc_rgb_init(struct drm_device *drm, struct tegra_dc *dc);
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extern int tegra_dc_rgb_exit(struct tegra_dc *dc);
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/* from output.c */
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extern int tegra_output_parse_dt(struct tegra_output *output);
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extern int tegra_output_init(struct drm_device *drm, struct tegra_output *output);
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extern int tegra_output_exit(struct tegra_output *output);
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/* from gem.c */
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extern struct tegra_gem_object *tegra_gem_alloc(struct drm_device *drm,
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size_t size);
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extern int tegra_gem_handle_create(struct drm_device *drm,
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struct drm_file *file, size_t size,
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unsigned long flags, uint32_t *handle);
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extern int tegra_gem_dumb_create(struct drm_file *file, struct drm_device *drm,
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struct drm_mode_create_dumb *args);
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extern int tegra_gem_dumb_map_offset(struct drm_file *file,
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struct drm_device *drm, uint32_t handle,
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uint64_t *offset);
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extern int tegra_gem_dumb_destroy(struct drm_file *file,
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struct drm_device *drm, uint32_t handle);
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extern int tegra_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma);
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extern int tegra_gem_init_object(struct drm_gem_object *obj);
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extern void tegra_gem_free_object(struct drm_gem_object *obj);
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extern struct vm_operations_struct tegra_gem_vm_ops;
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/* from fb.c */
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extern int tegra_drm_fb_init(struct drm_device *drm);
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extern void tegra_drm_fb_exit(struct drm_device *drm);
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extern struct platform_driver tegra_host1x_driver;
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extern struct platform_driver tegra_hdmi_driver;
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extern struct platform_driver tegra_dc_driver;
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extern struct drm_driver tegra_drm_driver;
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#endif /* TEGRA_DRM_H */
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