d23d4d4dac
This is only used by mipi-dbi drivers so move it there. The reason this isn't moved to the SPI subsystem is that it will in a later patch pass a dummy rx buffer for SPI controllers that need this. Low memory boards (64MB) can run into a problem allocating such a "large" contiguous buffer on every transfer after a long up time. This leaves a very specific use case, so we'll keep the function here. mipi-dbi will first go through a refactoring though, before this will be done. Remove SPI todo entry now that we're done with the tinydrm.ko SPI code. v2: Drop moving the mipi_dbi_spi_init() declaration (Sam) Cc: David Lechner <david@lechnology.com> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Acked-by: : David Lechner <david@lechnology.com> Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Link: https://patchwork.freedesktop.org/patch/msgid/20190719155916.62465-8-noralf@tronnes.org
43 lines
1007 B
C
43 lines
1007 B
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Copyright (C) 2016 Noralf Trønnes
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*/
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#ifndef __LINUX_TINYDRM_HELPERS_H
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#define __LINUX_TINYDRM_HELPERS_H
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struct backlight_device;
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struct drm_device;
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struct drm_display_mode;
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struct drm_framebuffer;
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struct drm_rect;
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struct drm_simple_display_pipe;
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struct drm_simple_display_pipe_funcs;
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struct device;
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/**
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* tinydrm_machine_little_endian - Machine is little endian
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*
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* Returns:
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* true if *defined(__LITTLE_ENDIAN)*, false otherwise
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*/
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static inline bool tinydrm_machine_little_endian(void)
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{
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#if defined(__LITTLE_ENDIAN)
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return true;
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#else
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return false;
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#endif
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}
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int tinydrm_display_pipe_init(struct drm_device *drm,
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struct drm_simple_display_pipe *pipe,
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const struct drm_simple_display_pipe_funcs *funcs,
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int connector_type,
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const uint32_t *formats,
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unsigned int format_count,
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const struct drm_display_mode *mode,
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unsigned int rotation);
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#endif /* __LINUX_TINYDRM_HELPERS_H */
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