werunplugged/unplugged-kernel
1
0 Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Initial commit: Linux kernel 4.19 for Unplugged OS

Browse Source
This commit is contained in:
ziv committed 2025-10-06 13:52:42 +00:00
commit d30235b04c
80519 files changed
+35800681
Download Patch File Download Diff File Expand all files Collapse all files

No files matched your search

include/drm/tinydrm/mipi-dbi.h
+109
View File
@@ -0,0 +1,109 @@
/*
* MIPI Display Bus Interface (DBI) LCD controller support
*
* Copyright 2016 Noralf Trønnes
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __LINUX_MIPI_DBI_H
#define __LINUX_MIPI_DBI_H
#include <drm/tinydrm/tinydrm.h>
struct spi_device;
struct gpio_desc;
struct regulator;
/**
* struct mipi_dbi - MIPI DBI controller
* @tinydrm: tinydrm base
* @spi: SPI device
* @enabled: Pipeline is enabled
* @cmdlock: Command lock
* @command: Bus specific callback executing commands.
* @read_commands: Array of read commands terminated by a zero entry.
* Reading is disabled if this is NULL.
* @dc: Optional D/C gpio.
* @tx_buf: Buffer used for transfer (copy clip rect area)
* @tx_buf9: Buffer used for Option 1 9-bit conversion
* @tx_buf9_len: Size of tx_buf9.
* @swap_bytes: Swap bytes in buffer before transfer
* @reset: Optional reset gpio
* @rotation: initial rotation in degrees Counter Clock Wise
* @backlight: backlight device (optional)
* @regulator: power regulator (optional)
*/
struct mipi_dbi {
struct tinydrm_device tinydrm;
struct spi_device *spi;
bool enabled;
struct mutex cmdlock;
int (*command)(struct mipi_dbi *mipi, u8 *cmd, u8 *param, size_t num);
const u8 *read_commands;
struct gpio_desc *dc;
u16 *tx_buf;
void *tx_buf9;
size_t tx_buf9_len;
bool swap_bytes;
struct gpio_desc *reset;
unsigned int rotation;
struct backlight_device *backlight;
struct regulator *regulator;
};
static inline struct mipi_dbi *
mipi_dbi_from_tinydrm(struct tinydrm_device *tdev)
{
return container_of(tdev, struct mipi_dbi, tinydrm);
}
int mipi_dbi_spi_init(struct spi_device *spi, struct mipi_dbi *mipi,
struct gpio_desc *dc);
int mipi_dbi_init(struct device *dev, struct mipi_dbi *mipi,
const struct drm_simple_display_pipe_funcs *pipe_funcs,
struct drm_driver *driver,
const struct drm_display_mode *mode, unsigned int rotation);
void mipi_dbi_enable_flush(struct mipi_dbi *mipi,
struct drm_crtc_state *crtc_state,
struct drm_plane_state *plan_state);
void mipi_dbi_pipe_disable(struct drm_simple_display_pipe *pipe);
void mipi_dbi_hw_reset(struct mipi_dbi *mipi);
bool mipi_dbi_display_is_on(struct mipi_dbi *mipi);
int mipi_dbi_poweron_reset(struct mipi_dbi *mipi);
int mipi_dbi_poweron_conditional_reset(struct mipi_dbi *mipi);
u32 mipi_dbi_spi_cmd_max_speed(struct spi_device *spi, size_t len);
int mipi_dbi_command_read(struct mipi_dbi *mipi, u8 cmd, u8 *val);
int mipi_dbi_command_buf(struct mipi_dbi *mipi, u8 cmd, u8 *data, size_t len);
int mipi_dbi_command_stackbuf(struct mipi_dbi *mipi, u8 cmd, u8 *data, size_t len);
int mipi_dbi_buf_copy(void *dst, struct drm_framebuffer *fb,
struct drm_clip_rect *clip, bool swap);
/**
* mipi_dbi_command - MIPI DCS command with optional parameter(s)
* @mipi: MIPI structure
* @cmd: Command
* @seq...: Optional parameter(s)
*
* Send MIPI DCS command to the controller. Use mipi_dbi_command_read() for
* get/read.
*
* Returns:
* Zero on success, negative error code on failure.
*/
#define mipi_dbi_command(mipi, cmd, seq...) \
({ \
u8 d[] = { seq }; \
mipi_dbi_command_stackbuf(mipi, cmd, d, ARRAY_SIZE(d)); \
})
#ifdef CONFIG_DEBUG_FS
int mipi_dbi_debugfs_init(struct drm_minor *minor);
#else
#define mipi_dbi_debugfs_init NULL
#endif
#endif /* __LINUX_MIPI_DBI_H */
include/drm/tinydrm/tinydrm-helpers.h
+84
View File
@@ -0,0 +1,84 @@
/*
* Copyright (C) 2016 Noralf Trønnes
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __LINUX_TINYDRM_HELPERS_H
#define __LINUX_TINYDRM_HELPERS_H
struct backlight_device;
struct tinydrm_device;
struct drm_clip_rect;
struct spi_transfer;
struct spi_message;
struct spi_device;
struct device;
/**
* tinydrm_machine_little_endian - Machine is little endian
*
* Returns:
* true if *defined(__LITTLE_ENDIAN)*, false otherwise
*/
static inline bool tinydrm_machine_little_endian(void)
{
#if defined(__LITTLE_ENDIAN)
return true;
#else
return false;
#endif
}
bool tinydrm_merge_clips(struct drm_clip_rect *dst,
struct drm_clip_rect *src, unsigned int num_clips,
unsigned int flags, u32 max_width, u32 max_height);
int tinydrm_fb_dirty(struct drm_framebuffer *fb,
struct drm_file *file_priv,
unsigned int flags, unsigned int color,
struct drm_clip_rect *clips,
unsigned int num_clips);
void tinydrm_memcpy(void *dst, void *vaddr, struct drm_framebuffer *fb,
struct drm_clip_rect *clip);
void tinydrm_swab16(u16 *dst, void *vaddr, struct drm_framebuffer *fb,
struct drm_clip_rect *clip);
void tinydrm_xrgb8888_to_rgb565(u16 *dst, void *vaddr,
struct drm_framebuffer *fb,
struct drm_clip_rect *clip, bool swap);
void tinydrm_xrgb8888_to_gray8(u8 *dst, void *vaddr, struct drm_framebuffer *fb,
struct drm_clip_rect *clip);
size_t tinydrm_spi_max_transfer_size(struct spi_device *spi, size_t max_len);
bool tinydrm_spi_bpw_supported(struct spi_device *spi, u8 bpw);
int tinydrm_spi_transfer(struct spi_device *spi, u32 speed_hz,
struct spi_transfer *header, u8 bpw, const void *buf,
size_t len);
void _tinydrm_dbg_spi_message(struct spi_device *spi, struct spi_message *m);
#ifdef DEBUG
/**
* tinydrm_dbg_spi_message - Dump SPI message
* @spi: SPI device
* @m: SPI message
*
* Dumps info about the transfers in a SPI message including buffer content.
* DEBUG has to be defined for this function to be enabled alongside setting
* the DRM_UT_DRIVER bit of &drm_debug.
*/
static inline void tinydrm_dbg_spi_message(struct spi_device *spi,
struct spi_message *m)
{
if (drm_debug & DRM_UT_DRIVER)
_tinydrm_dbg_spi_message(spi, m);
}
#else
static inline void tinydrm_dbg_spi_message(struct spi_device *spi,
struct spi_message *m)
{
}
#endif /* DEBUG */
#endif /* __LINUX_TINYDRM_HELPERS_H */
include/drm/tinydrm/tinydrm.h
+122
View File
@@ -0,0 +1,122 @@
/*
* Copyright (C) 2016 Noralf Trønnes
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __LINUX_TINYDRM_H
#define __LINUX_TINYDRM_H
#include <drm/drm_gem_cma_helper.h>
#include <drm/drm_fb_cma_helper.h>
#include <drm/drm_simple_kms_helper.h>
/**
* struct tinydrm_device - tinydrm device
*/
struct tinydrm_device {
/**
* @drm: DRM device
*/
struct drm_device *drm;
/**
* @pipe: Display pipe structure
*/
struct drm_simple_display_pipe pipe;
/**
* @dirty_lock: Serializes framebuffer flushing
*/
struct mutex dirty_lock;
/**
* @fb_funcs: Framebuffer functions used when creating framebuffers
*/
const struct drm_framebuffer_funcs *fb_funcs;
/**
* @fb_dirty: Framebuffer dirty callback
*/
int (*fb_dirty)(struct drm_framebuffer *framebuffer,
struct drm_file *file_priv, unsigned flags,
unsigned color, struct drm_clip_rect *clips,
unsigned num_clips);
};
static inline struct tinydrm_device *
pipe_to_tinydrm(struct drm_simple_display_pipe *pipe)
{
return container_of(pipe, struct tinydrm_device, pipe);
}
/**
* TINYDRM_GEM_DRIVER_OPS - default tinydrm gem operations
*
* This macro provides a shortcut for setting the tinydrm GEM operations in
* the &drm_driver structure.
*/
#define TINYDRM_GEM_DRIVER_OPS \
.gem_free_object_unlocked = tinydrm_gem_cma_free_object, \
.gem_print_info = drm_gem_cma_print_info, \
.gem_vm_ops = &drm_gem_cma_vm_ops, \
.prime_handle_to_fd = drm_gem_prime_handle_to_fd, \
.prime_fd_to_handle = drm_gem_prime_fd_to_handle, \
.gem_prime_import = drm_gem_prime_import, \
.gem_prime_export = drm_gem_prime_export, \
.gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table, \
.gem_prime_import_sg_table = tinydrm_gem_cma_prime_import_sg_table, \
.gem_prime_vmap = drm_gem_cma_prime_vmap, \
.gem_prime_vunmap = drm_gem_cma_prime_vunmap, \
.gem_prime_mmap = drm_gem_cma_prime_mmap, \
.dumb_create = drm_gem_cma_dumb_create
/**
* TINYDRM_MODE - tinydrm display mode
* @hd: Horizontal resolution, width
* @vd: Vertical resolution, height
* @hd_mm: Display width in millimeters
* @vd_mm: Display height in millimeters
*
* This macro creates a &drm_display_mode for use with tinydrm.
*/
#define TINYDRM_MODE(hd, vd, hd_mm, vd_mm) \
.hdisplay = (hd), \
.hsync_start = (hd), \
.hsync_end = (hd), \
.htotal = (hd), \
.vdisplay = (vd), \
.vsync_start = (vd), \
.vsync_end = (vd), \
.vtotal = (vd), \
.width_mm = (hd_mm), \
.height_mm = (vd_mm), \
.type = DRM_MODE_TYPE_DRIVER, \
.clock = 1 /* pass validation */
void tinydrm_gem_cma_free_object(struct drm_gem_object *gem_obj);
struct drm_gem_object *
tinydrm_gem_cma_prime_import_sg_table(struct drm_device *drm,
struct dma_buf_attachment *attach,
struct sg_table *sgt);
int devm_tinydrm_init(struct device *parent, struct tinydrm_device *tdev,
const struct drm_framebuffer_funcs *fb_funcs,
struct drm_driver *driver);
int devm_tinydrm_register(struct tinydrm_device *tdev);
void tinydrm_shutdown(struct tinydrm_device *tdev);
void tinydrm_display_pipe_update(struct drm_simple_display_pipe *pipe,
struct drm_plane_state *old_state);
int
tinydrm_display_pipe_init(struct tinydrm_device *tdev,
const struct drm_simple_display_pipe_funcs *funcs,
int connector_type,
const uint32_t *formats,
unsigned int format_count,
const struct drm_display_mode *mode,
unsigned int rotation);
#endif /* __LINUX_TINYDRM_H */