76 lines
2.0 KiB
C
76 lines
2.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
|
/*
|
|
* Copyright (C) 2016 Noralf Trønnes
|
|
*/
|
|
|
|
#ifndef __LINUX_TINYDRM_HELPERS_H
|
|
#define __LINUX_TINYDRM_HELPERS_H
|
|
|
|
struct backlight_device;
|
|
struct drm_device;
|
|
struct drm_display_mode;
|
|
struct drm_framebuffer;
|
|
struct drm_rect;
|
|
struct drm_simple_display_pipe;
|
|
struct drm_simple_display_pipe_funcs;
|
|
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
|
|
}
|
|
|
|
int tinydrm_display_pipe_init(struct drm_device *drm,
|
|
struct drm_simple_display_pipe *pipe,
|
|
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);
|
|
|
|
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 */
|