mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-30 21:46:31 +00:00
1d96d4a677
This patch adds flags field to mipi_dsi_msg structure and two flags: - MIPI_DSI_MSG_REQ_ACK - request ACK from peripheral for given message, - MIPI_DSI_MSG_USE_LPM - use Low Power Mode to transmit message. The first flag is usually helpful during DSI diagnostic, the second flag is required by some peripherals during configuration phase. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
165 lines
4.5 KiB
C
165 lines
4.5 KiB
C
/*
|
|
* 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.
|
|
*/
|
|
|
|
#ifndef __DRM_MIPI_DSI_H__
|
|
#define __DRM_MIPI_DSI_H__
|
|
|
|
#include <linux/device.h>
|
|
|
|
struct mipi_dsi_host;
|
|
struct mipi_dsi_device;
|
|
|
|
/* 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
|
|
* @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;
|
|
};
|
|
|
|
/**
|
|
* struct mipi_dsi_host_ops - DSI bus operations
|
|
* @attach: attach DSI device to DSI host
|
|
* @detach: detach DSI device from DSI host
|
|
* @transfer: send and/or receive DSI packet, return number of received bytes,
|
|
* or error
|
|
*/
|
|
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,
|
|
struct mipi_dsi_msg *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)
|
|
|
|
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;
|
|
};
|
|
|
|
#define to_mipi_dsi_device(d) container_of(d, struct mipi_dsi_device, dev)
|
|
|
|
int mipi_dsi_attach(struct mipi_dsi_device *dsi);
|
|
int mipi_dsi_detach(struct mipi_dsi_device *dsi);
|
|
int mipi_dsi_dcs_write(struct mipi_dsi_device *dsi, unsigned int channel,
|
|
const void *data, size_t len);
|
|
ssize_t mipi_dsi_dcs_read(struct mipi_dsi_device *dsi, unsigned int channel,
|
|
u8 cmd, void *data, size_t len);
|
|
|
|
/**
|
|
* struct mipi_dsi_driver - DSI driver
|
|
* @driver: device driver model driver
|
|
* @probe: callback for device binding
|
|
* @remove: callback for device unbinding
|
|
*/
|
|
struct mipi_dsi_driver {
|
|
struct device_driver driver;
|
|
int(*probe)(struct mipi_dsi_device *dsi);
|
|
int(*remove)(struct mipi_dsi_device *dsi);
|
|
};
|
|
|
|
#define to_mipi_dsi_driver(d) container_of(d, 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(struct mipi_dsi_driver *driver);
|
|
void mipi_dsi_driver_unregister(struct mipi_dsi_driver *driver);
|
|
|
|
#define module_mipi_dsi_driver(__mipi_dsi_driver) \
|
|
module_driver(__mipi_dsi_driver, mipi_dsi_driver_register, \
|
|
mipi_dsi_driver_unregister)
|
|
|
|
#endif /* __DRM_MIPI_DSI__ */
|