diff options
Diffstat (limited to 'sys/dev')
| -rw-r--r-- | sys/dev/pci/drm/drm_mipi_dsi.h | 273 |
1 files changed, 35 insertions, 238 deletions
diff --git a/sys/dev/pci/drm/drm_mipi_dsi.h b/sys/dev/pci/drm/drm_mipi_dsi.h index dc0ff9f5687..37de315b899 100644 --- a/sys/dev/pci/drm/drm_mipi_dsi.h +++ b/sys/dev/pci/drm/drm_mipi_dsi.h @@ -1,261 +1,58 @@ -/* - * MIPI DSI Bus - * - * Copyright (C) 2012-2013, Samsung Electronics, Co., Ltd. - * Andrzej Hajda <a.hajda@samsung.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ +/* Public domain. */ -#ifndef __DRM_MIPI_DSI_H__ -#define __DRM_MIPI_DSI_H__ +#include <sys/types.h> -#ifdef __linux__ -#include <linux/device.h> -#endif +#ifndef _DEV_PCI_DRM_DRM_MIPI_DSI_H_ +#define _DEV_PCI_DRM_DRM_MIPI_DSI_H_ struct mipi_dsi_host; struct mipi_dsi_device; +struct mipi_dsi_msg; -/* request ACK from peripheral */ -#define MIPI_DSI_MSG_REQ_ACK BIT(0) -/* use Low Power Mode to transmit message */ -#define MIPI_DSI_MSG_USE_LPM BIT(1) - -/** - * struct mipi_dsi_msg - read/write DSI buffer - * @channel: virtual channel id - * @type: payload data type - * @flags: flags controlling this message transmission - * @tx_len: length of @tx_buf - * @tx_buf: data to be written - * @rx_len: length of @rx_buf - * @rx_buf: data to be read, or NULL - */ -struct mipi_dsi_msg { - u8 channel; - u8 type; - u16 flags; - - size_t tx_len; - const void *tx_buf; - - size_t rx_len; - void *rx_buf; -}; - -bool mipi_dsi_packet_format_is_short(u8 type); -bool mipi_dsi_packet_format_is_long(u8 type); - -/** - * struct mipi_dsi_packet - represents a MIPI DSI packet in protocol format - * @size: size (in bytes) of the packet - * @header: the four bytes that make up the header (Data ID, Word Count or - * Packet Data, and ECC) - * @payload_length: number of bytes in the payload - * @payload: a pointer to a buffer containing the payload, if any - */ -struct mipi_dsi_packet { - size_t size; - u8 header[4]; - size_t payload_length; - const u8 *payload; -}; - -int mipi_dsi_create_packet(struct mipi_dsi_packet *packet, - const struct mipi_dsi_msg *msg); - -/** - * struct mipi_dsi_host_ops - DSI bus operations - * @attach: attach DSI device to DSI host - * @detach: detach DSI device from DSI host - * @transfer: transmit a DSI packet - * - * DSI packets transmitted by .transfer() are passed in as mipi_dsi_msg - * structures. This structure contains information about the type of packet - * being transmitted as well as the transmit and receive buffers. When an - * error is encountered during transmission, this function will return a - * negative error code. On success it shall return the number of bytes - * transmitted for write packets or the number of bytes received for read - * packets. - * - * Note that typically DSI packet transmission is atomic, so the .transfer() - * function will seldomly return anything other than the number of bytes - * contained in the transmit buffer on success. - */ struct mipi_dsi_host_ops { - int (*attach)(struct mipi_dsi_host *host, - struct mipi_dsi_device *dsi); - int (*detach)(struct mipi_dsi_host *host, - struct mipi_dsi_device *dsi); - ssize_t (*transfer)(struct mipi_dsi_host *host, - const struct mipi_dsi_msg *msg); + int (*attach)(struct mipi_dsi_host *, struct mipi_dsi_device *); + int (*detach)(struct mipi_dsi_host *, struct mipi_dsi_device *); + ssize_t (*transfer)(struct mipi_dsi_host *, const struct mipi_dsi_msg *); }; -/** - * struct mipi_dsi_host - DSI host device - * @dev: driver model device node for this DSI host - * @ops: DSI host operations - */ struct mipi_dsi_host { - struct device *dev; const struct mipi_dsi_host_ops *ops; }; -int mipi_dsi_host_register(struct mipi_dsi_host *host); -void mipi_dsi_host_unregister(struct mipi_dsi_host *host); - -/* DSI mode flags */ - -/* video mode */ -#define MIPI_DSI_MODE_VIDEO BIT(0) -/* video burst mode */ -#define MIPI_DSI_MODE_VIDEO_BURST BIT(1) -/* video pulse mode */ -#define MIPI_DSI_MODE_VIDEO_SYNC_PULSE BIT(2) -/* enable auto vertical count mode */ -#define MIPI_DSI_MODE_VIDEO_AUTO_VERT BIT(3) -/* enable hsync-end packets in vsync-pulse and v-porch area */ -#define MIPI_DSI_MODE_VIDEO_HSE BIT(4) -/* disable hfront-porch area */ -#define MIPI_DSI_MODE_VIDEO_HFP BIT(5) -/* disable hback-porch area */ -#define MIPI_DSI_MODE_VIDEO_HBP BIT(6) -/* disable hsync-active area */ -#define MIPI_DSI_MODE_VIDEO_HSA BIT(7) -/* flush display FIFO on vsync pulse */ -#define MIPI_DSI_MODE_VSYNC_FLUSH BIT(8) -/* disable EoT packets in HS mode */ -#define MIPI_DSI_MODE_EOT_PACKET BIT(9) -/* device supports non-continuous clock behavior (DSI spec 5.6.1) */ -#define MIPI_DSI_CLOCK_NON_CONTINUOUS BIT(10) -/* transmit data in low power */ -#define MIPI_DSI_MODE_LPM BIT(11) - -enum mipi_dsi_pixel_format { - MIPI_DSI_FMT_RGB888, - MIPI_DSI_FMT_RGB666, - MIPI_DSI_FMT_RGB666_PACKED, - MIPI_DSI_FMT_RGB565, -}; - -/** - * struct mipi_dsi_device - DSI peripheral device - * @host: DSI host for this peripheral - * @dev: driver model device node for this peripheral - * @channel: virtual channel assigned to the peripheral - * @format: pixel format for video mode - * @lanes: number of active data lanes - * @mode_flags: DSI operation mode related flags - */ struct mipi_dsi_device { struct mipi_dsi_host *host; - struct device dev; - - unsigned int channel; - unsigned int lanes; - enum mipi_dsi_pixel_format format; - unsigned long mode_flags; + uint32_t channel; + uint32_t mode_flags; +#define MIPI_DSI_MODE_LPM (1 << 0) }; -static inline struct mipi_dsi_device *to_mipi_dsi_device(struct device *dev) -{ - return container_of(dev, struct mipi_dsi_device, dev); -} - -struct mipi_dsi_device *of_find_mipi_dsi_device_by_node(struct device_node *np); -int mipi_dsi_attach(struct mipi_dsi_device *dsi); -int mipi_dsi_detach(struct mipi_dsi_device *dsi); -int mipi_dsi_set_maximum_return_packet_size(struct mipi_dsi_device *dsi, - u16 value); - -ssize_t mipi_dsi_generic_write(struct mipi_dsi_device *dsi, const void *payload, - size_t size); -ssize_t mipi_dsi_generic_read(struct mipi_dsi_device *dsi, const void *params, - size_t num_params, void *data, size_t size); - -/** - * enum mipi_dsi_dcs_tear_mode - Tearing Effect Output Line mode - * @MIPI_DSI_DCS_TEAR_MODE_VBLANK: the TE output line consists of V-Blanking - * information only - * @MIPI_DSI_DCS_TEAR_MODE_VHBLANK : the TE output line consists of both - * V-Blanking and H-Blanking information - */ -enum mipi_dsi_dcs_tear_mode { - MIPI_DSI_DCS_TEAR_MODE_VBLANK, - MIPI_DSI_DCS_TEAR_MODE_VHBLANK, +struct mipi_dsi_msg { + uint8_t type; + uint8_t channel; + uint16_t flags; +#define MIPI_DSI_MSG_USE_LPM (1 << 0) + const uint8_t *tx_buf; + size_t tx_len; + uint8_t *rx_buf; + size_t rx_len; }; -#define MIPI_DSI_DCS_POWER_MODE_DISPLAY (1 << 2) -#define MIPI_DSI_DCS_POWER_MODE_NORMAL (1 << 3) -#define MIPI_DSI_DCS_POWER_MODE_SLEEP (1 << 4) -#define MIPI_DSI_DCS_POWER_MODE_PARTIAL (1 << 5) -#define MIPI_DSI_DCS_POWER_MODE_IDLE (1 << 6) - -ssize_t mipi_dsi_dcs_write_buffer(struct mipi_dsi_device *dsi, - const void *data, size_t len); -ssize_t mipi_dsi_dcs_write(struct mipi_dsi_device *dsi, u8 cmd, - const void *data, size_t len); -ssize_t mipi_dsi_dcs_read(struct mipi_dsi_device *dsi, u8 cmd, void *data, - size_t len); -int mipi_dsi_dcs_nop(struct mipi_dsi_device *dsi); -int mipi_dsi_dcs_soft_reset(struct mipi_dsi_device *dsi); -int mipi_dsi_dcs_get_power_mode(struct mipi_dsi_device *dsi, u8 *mode); -int mipi_dsi_dcs_get_pixel_format(struct mipi_dsi_device *dsi, u8 *format); -int mipi_dsi_dcs_enter_sleep_mode(struct mipi_dsi_device *dsi); -int mipi_dsi_dcs_exit_sleep_mode(struct mipi_dsi_device *dsi); -int mipi_dsi_dcs_set_display_off(struct mipi_dsi_device *dsi); -int mipi_dsi_dcs_set_display_on(struct mipi_dsi_device *dsi); -int mipi_dsi_dcs_set_column_address(struct mipi_dsi_device *dsi, u16 start, - u16 end); -int mipi_dsi_dcs_set_page_address(struct mipi_dsi_device *dsi, u16 start, - u16 end); -int mipi_dsi_dcs_set_tear_off(struct mipi_dsi_device *dsi); -int mipi_dsi_dcs_set_tear_on(struct mipi_dsi_device *dsi, - enum mipi_dsi_dcs_tear_mode mode); -int mipi_dsi_dcs_set_pixel_format(struct mipi_dsi_device *dsi, u8 format); - -/** - * struct mipi_dsi_driver - DSI driver - * @driver: device driver model driver - * @probe: callback for device binding - * @remove: callback for device unbinding - * @shutdown: called at shutdown time to quiesce the device - */ -struct mipi_dsi_driver { - struct device_driver driver; - int(*probe)(struct mipi_dsi_device *dsi); - int(*remove)(struct mipi_dsi_device *dsi); - void (*shutdown)(struct mipi_dsi_device *dsi); +struct mipi_dsi_packet { + size_t size; + size_t payload_length; + uint8_t header[4]; + const uint8_t *payload; }; -static inline struct mipi_dsi_driver * -to_mipi_dsi_driver(struct device_driver *driver) -{ - return container_of(driver, struct mipi_dsi_driver, driver); -} - -static inline void *mipi_dsi_get_drvdata(const struct mipi_dsi_device *dsi) -{ - return dev_get_drvdata(&dsi->dev); -} - -static inline void mipi_dsi_set_drvdata(struct mipi_dsi_device *dsi, void *data) -{ - dev_set_drvdata(&dsi->dev, data); -} - -int mipi_dsi_driver_register_full(struct mipi_dsi_driver *driver, - struct module *owner); -void mipi_dsi_driver_unregister(struct mipi_dsi_driver *driver); - -#define mipi_dsi_driver_register(driver) \ - mipi_dsi_driver_register_full(driver, THIS_MODULE) +enum mipi_dsi_dcs_tear_mode { + MIPI_DSI_DCS_TEAR_MODE_UNUSED +}; -#define module_mipi_dsi_driver(__mipi_dsi_driver) \ - module_driver(__mipi_dsi_driver, mipi_dsi_driver_register, \ - mipi_dsi_driver_unregister) +int mipi_dsi_attach(struct mipi_dsi_device *); +int mipi_dsi_create_packet(struct mipi_dsi_packet *, + const struct mipi_dsi_msg *); +ssize_t mipi_dsi_generic_write(struct mipi_dsi_device *, const void *, size_t); +ssize_t mipi_dsi_dcs_write_buffer(struct mipi_dsi_device *, const void *, + size_t); -#endif /* __DRM_MIPI_DSI__ */ +#endif |