drm/tinydrm: Move mipi-dbi
This moves mipi-dbi to be a core helper with the name drm_mipi_dbi. Fixup include's in drivers. Move the docs entry and delete tinydrm.rst. Delete the last tinydrm todo entry. v2: Make DRM_MIPI_DBI tristate to enable it being built as a module. Cc: Eric Anholt <eric@anholt.net> Cc: David Lechner <david@lechnology.com> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Acked-by: David Lechner <david@lechnology.com> Acked-by: Eric Anholt <eric@anholt.net> Link: https://patchwork.freedesktop.org/patch/msgid/20190722104312.16184-9-noralf@tronnes.org
This commit is contained in:
Noralf Trønnes
188
include/drm/drm_mipi_dbi.h
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188
include/drm/drm_mipi_dbi.h
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/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* MIPI Display Bus Interface (DBI) LCD controller support
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*
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* Copyright 2016 Noralf Trønnes
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*/
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#ifndef __LINUX_MIPI_DBI_H
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#define __LINUX_MIPI_DBI_H
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#include <linux/mutex.h>
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#include <drm/drm_device.h>
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#include <drm/drm_simple_kms_helper.h>
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struct drm_rect;
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struct spi_device;
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struct gpio_desc;
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struct regulator;
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/**
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* struct mipi_dbi - MIPI DBI interface
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*/
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struct mipi_dbi {
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/**
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* @cmdlock: Command lock
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*/
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struct mutex cmdlock;
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/**
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* @command: Bus specific callback executing commands.
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*/
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int (*command)(struct mipi_dbi *dbi, u8 *cmd, u8 *param, size_t num);
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/**
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* @read_commands: Array of read commands terminated by a zero entry.
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* Reading is disabled if this is NULL.
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*/
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const u8 *read_commands;
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/**
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* @swap_bytes: Swap bytes in buffer before transfer
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*/
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bool swap_bytes;
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/**
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* @reset: Optional reset gpio
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*/
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struct gpio_desc *reset;
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/* Type C specific */
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/**
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* @spi: SPI device
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*/
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struct spi_device *spi;
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/**
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* @dc: Optional D/C gpio.
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*/
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struct gpio_desc *dc;
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/**
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* @tx_buf9: Buffer used for Option 1 9-bit conversion
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*/
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void *tx_buf9;
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/**
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* @tx_buf9_len: Size of tx_buf9.
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*/
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size_t tx_buf9_len;
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};
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/**
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* struct mipi_dbi_dev - MIPI DBI device
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*/
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struct mipi_dbi_dev {
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/**
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* @drm: DRM device
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*/
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struct drm_device drm;
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/**
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* @pipe: Display pipe structure
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*/
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struct drm_simple_display_pipe pipe;
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/**
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* @connector: Connector
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*/
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struct drm_connector connector;
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/**
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* @mode: Fixed display mode
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*/
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struct drm_display_mode mode;
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/**
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* @enabled: Pipeline is enabled
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*/
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bool enabled;
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/**
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* @tx_buf: Buffer used for transfer (copy clip rect area)
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*/
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u16 *tx_buf;
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/**
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* @rotation: initial rotation in degrees Counter Clock Wise
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*/
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unsigned int rotation;
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/**
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* @backlight: backlight device (optional)
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*/
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struct backlight_device *backlight;
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/**
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* @regulator: power regulator (optional)
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*/
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struct regulator *regulator;
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/**
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* @dbi: MIPI DBI interface
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*/
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struct mipi_dbi dbi;
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};
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static inline struct mipi_dbi_dev *drm_to_mipi_dbi_dev(struct drm_device *drm)
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{
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return container_of(drm, struct mipi_dbi_dev, drm);
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}
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int mipi_dbi_spi_init(struct spi_device *spi, struct mipi_dbi *dbi,
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struct gpio_desc *dc);
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int mipi_dbi_dev_init_with_formats(struct mipi_dbi_dev *dbidev,
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const struct drm_simple_display_pipe_funcs *funcs,
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const uint32_t *formats, unsigned int format_count,
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const struct drm_display_mode *mode,
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unsigned int rotation, size_t tx_buf_size);
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int mipi_dbi_dev_init(struct mipi_dbi_dev *dbidev,
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const struct drm_simple_display_pipe_funcs *funcs,
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const struct drm_display_mode *mode, unsigned int rotation);
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void mipi_dbi_release(struct drm_device *drm);
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void mipi_dbi_pipe_update(struct drm_simple_display_pipe *pipe,
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struct drm_plane_state *old_state);
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void mipi_dbi_enable_flush(struct mipi_dbi_dev *dbidev,
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struct drm_crtc_state *crtc_state,
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struct drm_plane_state *plan_state);
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void mipi_dbi_pipe_disable(struct drm_simple_display_pipe *pipe);
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void mipi_dbi_hw_reset(struct mipi_dbi *dbi);
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bool mipi_dbi_display_is_on(struct mipi_dbi *dbi);
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int mipi_dbi_poweron_reset(struct mipi_dbi_dev *dbidev);
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int mipi_dbi_poweron_conditional_reset(struct mipi_dbi_dev *dbidev);
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u32 mipi_dbi_spi_cmd_max_speed(struct spi_device *spi, size_t len);
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int mipi_dbi_spi_transfer(struct spi_device *spi, u32 speed_hz,
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u8 bpw, const void *buf, size_t len);
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int mipi_dbi_command_read(struct mipi_dbi *dbi, u8 cmd, u8 *val);
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int mipi_dbi_command_buf(struct mipi_dbi *dbi, u8 cmd, u8 *data, size_t len);
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int mipi_dbi_command_stackbuf(struct mipi_dbi *dbi, u8 cmd, u8 *data, size_t len);
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int mipi_dbi_buf_copy(void *dst, struct drm_framebuffer *fb,
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struct drm_rect *clip, bool swap);
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/**
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* mipi_dbi_command - MIPI DCS command with optional parameter(s)
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* @dbi: MIPI DBI structure
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* @cmd: Command
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* @seq...: Optional parameter(s)
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*
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* Send MIPI DCS command to the controller. Use mipi_dbi_command_read() for
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* get/read.
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*
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* Returns:
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* Zero on success, negative error code on failure.
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*/
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#define mipi_dbi_command(dbi, cmd, seq...) \
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({ \
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u8 d[] = { seq }; \
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mipi_dbi_command_stackbuf(dbi, cmd, d, ARRAY_SIZE(d)); \
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})
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#ifdef CONFIG_DEBUG_FS
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int mipi_dbi_debugfs_init(struct drm_minor *minor);
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#else
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#define mipi_dbi_debugfs_init NULL
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#endif
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#endif /* __LINUX_MIPI_DBI_H */
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