projects / mirror_ubuntu-artful-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 9f69eb5c NT |
1 | /* |
| 2 | * Copyright (C) 2016 Noralf Trønnes | |
| 3 | * | |
| 4 | * This program is free software; you can redistribute it and/or modify | |
| 5 | * it under the terms of the GNU General Public License as published by | |
| 6 | * the Free Software Foundation; either version 2 of the License, or | |
| 7 | * (at your option) any later version. | |
| 8 | */ | |
| 9 | ||
| 10 | #ifndef __LINUX_TINYDRM_HELPERS_H | |
| 11 | #define __LINUX_TINYDRM_HELPERS_H | |
| 12 | ||
| 13 | struct backlight_device; | |
| 14 | struct tinydrm_device; | |
| 15 | struct drm_clip_rect; | |
| 16 | struct spi_transfer; | |
| 17 | struct spi_message; | |
| 18 | struct spi_device; | |
| 19 | struct device; | |
| 20 | ||
| 21 | /** | |
| 22 | * tinydrm_machine_little_endian - Machine is little endian | |
| 23 | * | |
| 24 | * Returns: | |
| 25 | * true if *defined(__LITTLE_ENDIAN)*, false otherwise | |
| 26 | */ | |
| 27 | static inline bool tinydrm_machine_little_endian(void) | |
| 28 | { | |
| 29 | #if defined(__LITTLE_ENDIAN) | |
| 30 | return true; | |
| 31 | #else | |
| 32 | return false; | |
| 33 | #endif | |
| 34 | } | |
| 35 | ||
| 36 | bool tinydrm_merge_clips(struct drm_clip_rect *dst, | |
| 37 | struct drm_clip_rect *src, unsigned int num_clips, | |
| 38 | unsigned int flags, u32 max_width, u32 max_height); | |
| 39 | void tinydrm_memcpy(void *dst, void *vaddr, struct drm_framebuffer *fb, | |
| 40 | struct drm_clip_rect *clip); | |
| 41 | void tinydrm_swab16(u16 *dst, void *vaddr, struct drm_framebuffer *fb, | |
| 42 | struct drm_clip_rect *clip); | |
| 43 | void tinydrm_xrgb8888_to_rgb565(u16 *dst, void *vaddr, | |
| 44 | struct drm_framebuffer *fb, | |
| 45 | struct drm_clip_rect *clip, bool swap); | |
| 46 | ||
| 9f69eb5c NT |
47 | struct backlight_device *tinydrm_of_find_backlight(struct device *dev); |
| 48 | int tinydrm_enable_backlight(struct backlight_device *backlight); | |
| 49 | int tinydrm_disable_backlight(struct backlight_device *backlight); | |
| 9f69eb5c NT |
50 | |
| 51 | size_t tinydrm_spi_max_transfer_size(struct spi_device *spi, size_t max_len); | |
| 52 | bool tinydrm_spi_bpw_supported(struct spi_device *spi, u8 bpw); | |
| 53 | int tinydrm_spi_transfer(struct spi_device *spi, u32 speed_hz, | |
| 54 | struct spi_transfer *header, u8 bpw, const void *buf, | |
| 55 | size_t len); | |
| 56 | void _tinydrm_dbg_spi_message(struct spi_device *spi, struct spi_message *m); | |
| 57 | ||
| 58 | #ifdef DEBUG | |
| 59 | /** | |
| 60 | * tinydrm_dbg_spi_message - Dump SPI message | |
| 61 | * @spi: SPI device | |
| 62 | * @m: SPI message | |
| 63 | * | |
| 64 | * Dumps info about the transfers in a SPI message including buffer content. | |
| 65 | * DEBUG has to be defined for this function to be enabled alongside setting | |
| 66 | * the DRM_UT_DRIVER bit of &drm_debug. | |
| 67 | */ | |
| 68 | static inline void tinydrm_dbg_spi_message(struct spi_device *spi, | |
| 69 | struct spi_message *m) | |
| 70 | { | |
| 71 | if (drm_debug & DRM_UT_DRIVER) | |
| 72 | _tinydrm_dbg_spi_message(spi, m); | |
| 73 | } | |
| 74 | #else | |
| 75 | static inline void tinydrm_dbg_spi_message(struct spi_device *spi, | |
| 76 | struct spi_message *m) | |
| 77 | { | |
| 78 | } | |
| 79 | #endif /* DEBUG */ | |
| 80 | ||
| 81 | #endif /* __LINUX_TINYDRM_HELPERS_H */ |