mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-24 03:53:31 +00:00
01c9857fa8
The Amlogic D-PHY in the Amlogic AXG SoC Family does support a frequency
higher than 10MHz for the TX Escape Clock, thus make the target rate
configurable.
This is based on the Linux commit [1] and adapted to the U-Boot driver.
[1] a328ca7e4af3 ("drm/bridge: dw-mipi-dsi: permit configuring the escape clock rate")
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
490 lines
15 KiB
C
490 lines
15 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* MIPI DSI Bus
|
|
*
|
|
* Copyright (C) 2012-2013, Samsung Electronics, Co., Ltd.
|
|
* Copyright (C) 2018 STMicroelectronics - All Rights Reserved
|
|
* Author(s): Andrzej Hajda <a.hajda@samsung.com>
|
|
* Yannick Fertre <yannick.fertre@st.com>
|
|
* Philippe Cornu <philippe.cornu@st.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 MIPI_DSI_H
|
|
#define MIPI_DSI_H
|
|
|
|
#include <mipi_display.h>
|
|
#include <linux/bitops.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
|
|
* @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);
|
|
};
|
|
|
|
/**
|
|
* struct mipi_dsi_phy_timing - DSI host phy timings
|
|
* @data_hs2lp: High Speed to Low Speed Data Transition Time
|
|
* @data_lp2hs: Low Speed to High Speed Data Transition Time
|
|
* @clk_hs2lp: High Speed to Low Speed Clock Transition Time
|
|
* @clk_lp2hs: Low Speed to High Speed Clock Transition Time
|
|
*/
|
|
struct mipi_dsi_phy_timing {
|
|
u16 data_hs2lp;
|
|
u16 data_lp2hs;
|
|
u16 clk_hs2lp;
|
|
u16 clk_lp2hs;
|
|
};
|
|
|
|
/**
|
|
* struct mipi_dsi_phy_ops - DSI host physical operations
|
|
* @init: initialized host physical part
|
|
* @get_lane_mbps: get lane bitrate per lane (mbps)
|
|
* @post_set_mode: operation that should after set mode
|
|
*/
|
|
struct mipi_dsi_phy_ops {
|
|
int (*init)(void *priv_data);
|
|
int (*get_lane_mbps)(void *priv_data, struct display_timing *timings,
|
|
u32 lanes, u32 format, unsigned int *lane_mbps);
|
|
void (*post_set_mode)(void *priv_data, unsigned long mode_flags);
|
|
int (*get_timing)(void *priv_data, unsigned int lane_mbps,
|
|
struct mipi_dsi_phy_timing *timing);
|
|
void (*get_esc_clk_rate)(void *priv_data, unsigned int *esc_clk_rate);
|
|
};
|
|
|
|
/**
|
|
* struct mipi_dsi_host - DSI host device
|
|
* @dev: driver model device node for this DSI host
|
|
* @ops: DSI host operations
|
|
* @list: list management
|
|
*/
|
|
struct mipi_dsi_host {
|
|
struct device *dev;
|
|
const struct mipi_dsi_host_ops *ops;
|
|
struct list_head list;
|
|
};
|
|
|
|
/* 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,
|
|
};
|
|
|
|
#define DSI_DEV_NAME_SIZE 20
|
|
|
|
/**
|
|
* struct mipi_dsi_device_info - template for creating a mipi_dsi_device
|
|
* @type: DSI peripheral chip type
|
|
* @channel: DSI virtual channel assigned to peripheral
|
|
* @node: pointer to OF device node or NULL
|
|
*
|
|
* This is populated and passed to mipi_dsi_device_new to create a new
|
|
* DSI device
|
|
*/
|
|
struct mipi_dsi_device_info {
|
|
char type[DSI_DEV_NAME_SIZE];
|
|
u32 channel;
|
|
struct device_node *node;
|
|
};
|
|
|
|
/**
|
|
* struct mipi_dsi_device - DSI peripheral device
|
|
* @host: DSI host for this peripheral
|
|
* @dev: driver model device node for this peripheral
|
|
* @name: DSI peripheral chip type
|
|
* @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 udevice *dev;
|
|
|
|
char name[DSI_DEV_NAME_SIZE];
|
|
unsigned int channel;
|
|
unsigned int lanes;
|
|
enum mipi_dsi_pixel_format format;
|
|
unsigned long mode_flags;
|
|
};
|
|
|
|
/**
|
|
* mipi_dsi_pixel_format_to_bpp - obtain the number of bits per pixel for any
|
|
* given pixel format defined by the MIPI DSI
|
|
* specification
|
|
* @fmt: MIPI DSI pixel format
|
|
*
|
|
* Returns: The number of bits per pixel of the given pixel format.
|
|
*/
|
|
static inline int mipi_dsi_pixel_format_to_bpp(enum mipi_dsi_pixel_format fmt)
|
|
{
|
|
switch (fmt) {
|
|
case MIPI_DSI_FMT_RGB888:
|
|
case MIPI_DSI_FMT_RGB666:
|
|
return 24;
|
|
|
|
case MIPI_DSI_FMT_RGB666_PACKED:
|
|
return 18;
|
|
|
|
case MIPI_DSI_FMT_RGB565:
|
|
return 16;
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
/**
|
|
* struct mipi_dsi_panel_plat - DSI panel platform data
|
|
* @device: DSI peripheral device
|
|
* @lanes: number of active data lanes
|
|
* @format: pixel format for video mode
|
|
* @mode_flags: DSI operation mode related flags
|
|
*/
|
|
struct mipi_dsi_panel_plat {
|
|
struct mipi_dsi_device *device;
|
|
unsigned int lanes;
|
|
enum mipi_dsi_pixel_format format;
|
|
unsigned long mode_flags;
|
|
};
|
|
|
|
/**
|
|
* mipi_dsi_attach - attach a DSI device to its DSI host
|
|
* @dsi: DSI peripheral
|
|
*/
|
|
int mipi_dsi_attach(struct mipi_dsi_device *dsi);
|
|
|
|
/**
|
|
* mipi_dsi_detach - detach a DSI device from its DSI host
|
|
* @dsi: DSI peripheral
|
|
*/
|
|
int mipi_dsi_detach(struct mipi_dsi_device *dsi);
|
|
int mipi_dsi_shutdown_peripheral(struct mipi_dsi_device *dsi);
|
|
int mipi_dsi_turn_on_peripheral(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,
|
|
};
|
|
|
|
#define MIPI_DSI_DCS_POWER_MODE_DISPLAY BIT(2)
|
|
#define MIPI_DSI_DCS_POWER_MODE_NORMAL BIT(3)
|
|
#define MIPI_DSI_DCS_POWER_MODE_SLEEP BIT(4)
|
|
#define MIPI_DSI_DCS_POWER_MODE_PARTIAL BIT(5)
|
|
#define MIPI_DSI_DCS_POWER_MODE_IDLE BIT(6)
|
|
|
|
/**
|
|
* mipi_dsi_dcs_write_buffer() - transmit a DCS command with payload
|
|
* @dsi: DSI peripheral device
|
|
* @data: buffer containing data to be transmitted
|
|
* @len: size of transmission buffer
|
|
*
|
|
* This function will automatically choose the right data type depending on
|
|
* the command payload length.
|
|
*
|
|
* Return: The number of bytes successfully transmitted or a negative error
|
|
* code on failure.
|
|
*/
|
|
ssize_t mipi_dsi_dcs_write_buffer(struct mipi_dsi_device *dsi,
|
|
const void *data, size_t len);
|
|
|
|
/**
|
|
* mipi_dsi_dcs_write() - send DCS write command
|
|
* @dsi: DSI peripheral device
|
|
* @cmd: DCS command
|
|
* @data: buffer containing the command payload
|
|
* @len: command payload length
|
|
*
|
|
* This function will automatically choose the right data type depending on
|
|
* the command payload length.
|
|
|
|
* code on failure.
|
|
*/
|
|
ssize_t mipi_dsi_dcs_write(struct mipi_dsi_device *dsi, u8 cmd,
|
|
const void *data, size_t len);
|
|
|
|
/**
|
|
* mipi_dsi_dcs_read() - send DCS read request command
|
|
* @dsi: DSI peripheral device
|
|
* @cmd: DCS command
|
|
* @data: buffer in which to receive data
|
|
* @len: size of receive buffer
|
|
*
|
|
* Return: The number of bytes read or a negative error code on failure.
|
|
*/
|
|
ssize_t mipi_dsi_dcs_read(struct mipi_dsi_device *dsi, u8 cmd, void *data,
|
|
size_t len);
|
|
|
|
/**
|
|
* mipi_dsi_dcs_nop() - send DCS nop packet
|
|
* @dsi: DSI peripheral device
|
|
*
|
|
* Return: 0 on success or a negative error code on failure.
|
|
*/
|
|
int mipi_dsi_dcs_nop(struct mipi_dsi_device *dsi);
|
|
|
|
/**
|
|
* mipi_dsi_dcs_soft_reset() - perform a software reset of the display module
|
|
* @dsi: DSI peripheral device
|
|
*
|
|
* Return: 0 on success or a negative error code on failure.
|
|
*/
|
|
int mipi_dsi_dcs_soft_reset(struct mipi_dsi_device *dsi);
|
|
|
|
/**
|
|
* mipi_dsi_dcs_get_power_mode() - query the display module's current power
|
|
* mode
|
|
* @dsi: DSI peripheral device
|
|
* @mode: return location for the current power mode
|
|
*
|
|
* Return: 0 on success or a negative error code on failure.
|
|
*/
|
|
int mipi_dsi_dcs_get_power_mode(struct mipi_dsi_device *dsi, u8 *mode);
|
|
|
|
/**
|
|
* mipi_dsi_dcs_get_pixel_format() - gets the pixel format for the RGB image
|
|
* data used by the interface
|
|
* @dsi: DSI peripheral device
|
|
* @format: return location for the pixel format
|
|
*
|
|
* Return: 0 on success or a negative error code on failure.
|
|
*/
|
|
int mipi_dsi_dcs_get_pixel_format(struct mipi_dsi_device *dsi, u8 *format);
|
|
|
|
/**
|
|
* mipi_dsi_dcs_enter_sleep_mode() - disable all unnecessary blocks inside the
|
|
* display module except interface communication
|
|
* @dsi: DSI peripheral device
|
|
*
|
|
* Return: 0 on success or a negative error code on failure.
|
|
*/
|
|
int mipi_dsi_dcs_enter_sleep_mode(struct mipi_dsi_device *dsi);
|
|
|
|
/**
|
|
* mipi_dsi_dcs_exit_sleep_mode() - enable all blocks inside the display
|
|
* module
|
|
* @dsi: DSI peripheral device
|
|
*
|
|
* Return: 0 on success or a negative error code on failure.
|
|
*/
|
|
int mipi_dsi_dcs_exit_sleep_mode(struct mipi_dsi_device *dsi);
|
|
|
|
/**
|
|
* mipi_dsi_dcs_set_display_off() - stop displaying the image data on the
|
|
* display device
|
|
* @dsi: DSI peripheral device
|
|
*
|
|
* Return: 0 on success or a negative error code on failure.
|
|
*/
|
|
int mipi_dsi_dcs_set_display_off(struct mipi_dsi_device *dsi);
|
|
|
|
/**
|
|
* mipi_dsi_dcs_set_display_on() - start displaying the image data on the
|
|
* display device
|
|
* @dsi: DSI peripheral device
|
|
*
|
|
* Return: 0 on success or a negative error code on failure
|
|
*/
|
|
int mipi_dsi_dcs_set_display_on(struct mipi_dsi_device *dsi);
|
|
|
|
/**
|
|
* mipi_dsi_dcs_set_column_address() - define the column extent of the frame
|
|
* memory accessed by the host processor
|
|
* @dsi: DSI peripheral device
|
|
* @start: first column of frame memory
|
|
* @end: last column of frame memory
|
|
*
|
|
* Return: 0 on success or a negative error code on failure.
|
|
*/
|
|
int mipi_dsi_dcs_set_column_address(struct mipi_dsi_device *dsi, u16 start,
|
|
u16 end);
|
|
/**
|
|
* mipi_dsi_dcs_set_page_address() - define the page extent of the frame
|
|
* memory accessed by the host processor
|
|
* @dsi: DSI peripheral device
|
|
* @start: first page of frame memory
|
|
* @end: last page of frame memory
|
|
*
|
|
* Return: 0 on success or a negative error code on failure.
|
|
*/
|
|
int mipi_dsi_dcs_set_page_address(struct mipi_dsi_device *dsi, u16 start,
|
|
u16 end);
|
|
|
|
/**
|
|
* mipi_dsi_dcs_set_tear_off() - turn off the display module's Tearing Effect
|
|
* output signal on the TE signal line
|
|
* @dsi: DSI peripheral device
|
|
*
|
|
* Return: 0 on success or a negative error code on failure
|
|
*/
|
|
int mipi_dsi_dcs_set_tear_off(struct mipi_dsi_device *dsi);
|
|
|
|
/**
|
|
* mipi_dsi_dcs_set_tear_on() - turn on the display module's Tearing Effect
|
|
* output signal on the TE signal line.
|
|
* @dsi: DSI peripheral device
|
|
* @mode: the Tearing Effect Output Line mode
|
|
*
|
|
* Return: 0 on success or a negative error code on failure
|
|
*/
|
|
int mipi_dsi_dcs_set_tear_on(struct mipi_dsi_device *dsi,
|
|
enum mipi_dsi_dcs_tear_mode mode);
|
|
|
|
/**
|
|
* mipi_dsi_dcs_set_pixel_format() - sets the pixel format for the RGB image
|
|
* data used by the interface
|
|
* @dsi: DSI peripheral device
|
|
* @format: pixel format
|
|
*
|
|
* Return: 0 on success or a negative error code on failure.
|
|
*/
|
|
int mipi_dsi_dcs_set_pixel_format(struct mipi_dsi_device *dsi, u8 format);
|
|
|
|
/**
|
|
* mipi_dsi_dcs_set_tear_scanline() - set the scanline to use as trigger for
|
|
* the Tearing Effect output signal of the display module
|
|
* @dsi: DSI peripheral device
|
|
* @scanline: scanline to use as trigger
|
|
*
|
|
* Return: 0 on success or a negative error code on failure
|
|
*/
|
|
int mipi_dsi_dcs_set_tear_scanline(struct mipi_dsi_device *dsi, u16 scanline);
|
|
|
|
/**
|
|
* mipi_dsi_dcs_set_display_brightness() - sets the brightness value of the
|
|
* display
|
|
* @dsi: DSI peripheral device
|
|
* @brightness: brightness value
|
|
*
|
|
* Return: 0 on success or a negative error code on failure.
|
|
*/
|
|
int mipi_dsi_dcs_set_display_brightness(struct mipi_dsi_device *dsi,
|
|
u16 brightness);
|
|
|
|
/**
|
|
* mipi_dsi_dcs_get_display_brightness() - gets the current brightness value
|
|
* of the display
|
|
* @dsi: DSI peripheral device
|
|
* @brightness: brightness value
|
|
*
|
|
* Return: 0 on success or a negative error code on failure.
|
|
*/
|
|
int mipi_dsi_dcs_get_display_brightness(struct mipi_dsi_device *dsi,
|
|
u16 *brightness);
|
|
|
|
#endif /* MIPI_DSI_H */
|