forked from Minki/linux
59d29c0ec9
Since the .init() and .exit() functions are executed whenever the DRM driver is loaded or unloaded, care must be taken not to use them for resource allocation. Otherwise deferred probing cannot be used, since the .init() and .exit() are not run at probe time. Similarly the code that frees resources must be run at .remove() time. If it is run from the .exit() function, it can release resources multiple times. To handle this more consistently, rename the tegra_output_parse_dt() function to tegra_output_probe() and introduce tegra_output_remove() which can be used to free output-related resources. Signed-off-by: Thierry Reding <treding@nvidia.com>
261 lines
6.6 KiB
C
261 lines
6.6 KiB
C
/*
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* Copyright (C) 2012 Avionic Design GmbH
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* Copyright (C) 2012-2013 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 HOST1X_DRM_H
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#define HOST1X_DRM_H 1
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#include <uapi/drm/tegra_drm.h>
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#include <linux/host1x.h>
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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_fixed.h>
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struct tegra_fb {
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struct drm_framebuffer base;
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struct tegra_bo **planes;
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unsigned int num_planes;
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};
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struct tegra_fbdev {
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struct drm_fb_helper base;
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struct tegra_fb *fb;
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};
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struct tegra_drm {
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struct drm_device *drm;
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struct mutex clients_lock;
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struct list_head clients;
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struct tegra_fbdev *fbdev;
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};
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struct tegra_drm_client;
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struct tegra_drm_context {
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struct tegra_drm_client *client;
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struct host1x_channel *channel;
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struct list_head list;
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};
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struct tegra_drm_client_ops {
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int (*open_channel)(struct tegra_drm_client *client,
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struct tegra_drm_context *context);
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void (*close_channel)(struct tegra_drm_context *context);
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int (*submit)(struct tegra_drm_context *context,
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struct drm_tegra_submit *args, struct drm_device *drm,
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struct drm_file *file);
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};
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struct tegra_drm_client {
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struct host1x_client base;
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struct list_head list;
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const struct tegra_drm_client_ops *ops;
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};
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static inline struct tegra_drm_client *
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host1x_to_drm_client(struct host1x_client *client)
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{
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return container_of(client, struct tegra_drm_client, base);
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}
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extern int tegra_drm_register_client(struct tegra_drm *tegra,
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struct tegra_drm_client *client);
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extern int tegra_drm_unregister_client(struct tegra_drm *tegra,
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struct tegra_drm_client *client);
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extern int tegra_drm_init(struct tegra_drm *tegra, struct drm_device *drm);
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extern int tegra_drm_exit(struct tegra_drm *tegra);
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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 device *dev;
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spinlock_t lock;
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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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/* page-flip handling */
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struct drm_pending_vblank_event *event;
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};
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static inline struct tegra_dc *
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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_dc_window {
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struct {
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unsigned int x;
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unsigned int y;
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unsigned int w;
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unsigned int h;
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} src;
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struct {
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unsigned int x;
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unsigned int y;
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unsigned int w;
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unsigned int h;
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} dst;
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unsigned int bits_per_pixel;
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unsigned int format;
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unsigned int stride[2];
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unsigned long base[3];
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};
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/* from dc.c */
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extern unsigned int tegra_dc_format(uint32_t format);
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extern int tegra_dc_setup_window(struct tegra_dc *dc, unsigned int index,
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const struct tegra_dc_window *window);
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extern void tegra_dc_enable_vblank(struct tegra_dc *dc);
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extern void tegra_dc_disable_vblank(struct tegra_dc *dc);
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extern void tegra_dc_cancel_page_flip(struct drm_crtc *crtc,
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struct drm_file *file);
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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 bus.c */
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int drm_host1x_init(struct drm_driver *driver, struct host1x_device *device);
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void drm_host1x_exit(struct drm_driver *driver, struct host1x_device *device);
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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_remove(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_probe(struct tegra_output *output);
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extern int tegra_output_remove(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 fb.c */
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struct tegra_bo *tegra_fb_get_plane(struct drm_framebuffer *framebuffer,
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unsigned int index);
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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 void tegra_fbdev_restore_mode(struct tegra_fbdev *fbdev);
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extern struct platform_driver tegra_dc_driver;
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extern struct platform_driver tegra_hdmi_driver;
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extern struct platform_driver tegra_gr2d_driver;
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#endif /* HOST1X_DRM_H */
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