diff options
Diffstat (limited to 'kernel/include/video/exynos_mipi_dsim.h')
| -rw-r--r-- | kernel/include/video/exynos_mipi_dsim.h | 358 |
1 files changed, 358 insertions, 0 deletions
diff --git a/kernel/include/video/exynos_mipi_dsim.h b/kernel/include/video/exynos_mipi_dsim.h new file mode 100644 index 000000000..6a578f8a1 --- /dev/null +++ b/kernel/include/video/exynos_mipi_dsim.h @@ -0,0 +1,358 @@ +/* include/video/exynos_mipi_dsim.h + * + * Platform data header for Samsung SoC MIPI-DSIM. + * + * Copyright (c) 2012 Samsung Electronics Co., Ltd + * + * InKi Dae <inki.dae@samsung.com> + * Donghwa Lee <dh09.lee@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 _EXYNOS_MIPI_DSIM_H +#define _EXYNOS_MIPI_DSIM_H + +#include <linux/device.h> +#include <linux/fb.h> + +#define PANEL_NAME_SIZE (32) + +/* + * Enumerate display interface type. + * + * DSIM_COMMAND means cpu interface and rgb interface for DSIM_VIDEO. + * + * P.S. MIPI DSI Master has two display controller intefaces, RGB Interface + * for main display and CPU Interface(same as I80 Interface) for main + * and sub display. + */ +enum mipi_dsim_interface_type { + DSIM_COMMAND, + DSIM_VIDEO +}; + +enum mipi_dsim_virtual_ch_no { + DSIM_VIRTUAL_CH_0, + DSIM_VIRTUAL_CH_1, + DSIM_VIRTUAL_CH_2, + DSIM_VIRTUAL_CH_3 +}; + +enum mipi_dsim_burst_mode_type { + DSIM_NON_BURST_SYNC_EVENT, + DSIM_BURST_SYNC_EVENT, + DSIM_NON_BURST_SYNC_PULSE, + DSIM_BURST, + DSIM_NON_VIDEO_MODE +}; + +enum mipi_dsim_no_of_data_lane { + DSIM_DATA_LANE_1, + DSIM_DATA_LANE_2, + DSIM_DATA_LANE_3, + DSIM_DATA_LANE_4 +}; + +enum mipi_dsim_byte_clk_src { + DSIM_PLL_OUT_DIV8, + DSIM_EXT_CLK_DIV8, + DSIM_EXT_CLK_BYPASS +}; + +enum mipi_dsim_pixel_format { + DSIM_CMD_3BPP, + DSIM_CMD_8BPP, + DSIM_CMD_12BPP, + DSIM_CMD_16BPP, + DSIM_VID_16BPP_565, + DSIM_VID_18BPP_666PACKED, + DSIM_18BPP_666LOOSELYPACKED, + DSIM_24BPP_888 +}; + +/* + * struct mipi_dsim_config - interface for configuring mipi-dsi controller. + * + * @auto_flush: enable or disable Auto flush of MD FIFO using VSYNC pulse. + * @eot_disable: enable or disable EoT packet in HS mode. + * @auto_vertical_cnt: specifies auto vertical count mode. + * in Video mode, the vertical line transition uses line counter + * configured by VSA, VBP, and Vertical resolution. + * If this bit is set to '1', the line counter does not use VSA and VBP + * registers.(in command mode, this variable is ignored) + * @hse: set horizontal sync event mode. + * In VSYNC pulse and Vporch area, MIPI DSI master transfers only HSYNC + * start packet to MIPI DSI slave at MIPI DSI spec1.1r02. + * this bit transfers HSYNC end packet in VSYNC pulse and Vporch area + * (in mommand mode, this variable is ignored) + * @hfp: specifies HFP disable mode. + * if this variable is set, DSI master ignores HFP area in VIDEO mode. + * (in command mode, this variable is ignored) + * @hbp: specifies HBP disable mode. + * if this variable is set, DSI master ignores HBP area in VIDEO mode. + * (in command mode, this variable is ignored) + * @hsa: specifies HSA disable mode. + * if this variable is set, DSI master ignores HSA area in VIDEO mode. + * (in command mode, this variable is ignored) + * @cma_allow: specifies the number of horizontal lines, where command packet + * transmission is allowed after Stable VFP period. + * @e_interface: specifies interface to be used.(CPU or RGB interface) + * @e_virtual_ch: specifies virtual channel number that main or + * sub diaplsy uses. + * @e_pixel_format: specifies pixel stream format for main or sub display. + * @e_burst_mode: selects Burst mode in Video mode. + * in Non-burst mode, RGB data area is filled with RGB data and NULL + * packets, according to input bandwidth of RGB interface. + * In Burst mode, RGB data area is filled with RGB data only. + * @e_no_data_lane: specifies data lane count to be used by Master. + * @e_byte_clk: select byte clock source. (it must be DSIM_PLL_OUT_DIV8) + * DSIM_EXT_CLK_DIV8 and DSIM_EXT_CLK_BYPASSS are not supported. + * @pll_stable_time: specifies the PLL Timer for stability of the ganerated + * clock(System clock cycle base) + * if the timer value goes to 0x00000000, the clock stable bit of status + * and interrupt register is set. + * @esc_clk: specifies escape clock frequency for getting the escape clock + * prescaler value. + * @stop_holding_cnt: specifies the interval value between transmitting + * read packet(or write "set_tear_on" command) and BTA request. + * after transmitting read packet or write "set_tear_on" command, + * BTA requests to D-PHY automatically. this counter value specifies + * the interval between them. + * @bta_timeout: specifies the timer for BTA. + * this register specifies time out from BTA request to change + * the direction with respect to Tx escape clock. + * @rx_timeout: specifies the timer for LP Rx mode timeout. + * this register specifies time out on how long RxValid deasserts, + * after RxLpdt asserts with respect to Tx escape clock. + * - RxValid specifies Rx data valid indicator. + * - RxLpdt specifies an indicator that D-PHY is under RxLpdt mode. + * - RxValid and RxLpdt specifies signal from D-PHY. + */ +struct mipi_dsim_config { + unsigned char auto_flush; + unsigned char eot_disable; + + unsigned char auto_vertical_cnt; + unsigned char hse; + unsigned char hfp; + unsigned char hbp; + unsigned char hsa; + unsigned char cmd_allow; + + enum mipi_dsim_interface_type e_interface; + enum mipi_dsim_virtual_ch_no e_virtual_ch; + enum mipi_dsim_pixel_format e_pixel_format; + enum mipi_dsim_burst_mode_type e_burst_mode; + enum mipi_dsim_no_of_data_lane e_no_data_lane; + enum mipi_dsim_byte_clk_src e_byte_clk; + + /* + * =========================================== + * | P | M | S | MHz | + * ------------------------------------------- + * | 3 | 100 | 3 | 100 | + * | 3 | 100 | 2 | 200 | + * | 3 | 63 | 1 | 252 | + * | 4 | 100 | 1 | 300 | + * | 4 | 110 | 1 | 330 | + * | 12 | 350 | 1 | 350 | + * | 3 | 100 | 1 | 400 | + * | 4 | 150 | 1 | 450 | + * | 6 | 118 | 1 | 472 | + * | 3 | 120 | 1 | 480 | + * | 12 | 250 | 0 | 500 | + * | 4 | 100 | 0 | 600 | + * | 3 | 81 | 0 | 648 | + * | 3 | 88 | 0 | 704 | + * | 3 | 90 | 0 | 720 | + * | 3 | 100 | 0 | 800 | + * | 12 | 425 | 0 | 850 | + * | 4 | 150 | 0 | 900 | + * | 12 | 475 | 0 | 950 | + * | 6 | 250 | 0 | 1000 | + * ------------------------------------------- + */ + + /* + * pms could be calculated as the following. + * M * 24 / P * 2 ^ S = MHz + */ + unsigned char p; + unsigned short m; + unsigned char s; + + unsigned int pll_stable_time; + unsigned long esc_clk; + + unsigned short stop_holding_cnt; + unsigned char bta_timeout; + unsigned short rx_timeout; +}; + +/* + * struct mipi_dsim_device - global interface for mipi-dsi driver. + * + * @dev: driver model representation of the device. + * @id: unique device id. + * @clock: pointer to MIPI-DSI clock of clock framework. + * @irq: interrupt number to MIPI-DSI controller. + * @reg_base: base address to memory mapped SRF of MIPI-DSI controller. + * (virtual address) + * @lock: the mutex protecting this data structure. + * @dsim_info: infomation for configuring mipi-dsi controller. + * @master_ops: callbacks to mipi-dsi operations. + * @dsim_lcd_dev: pointer to activated ddi device. + * (it would be registered by mipi-dsi driver.) + * @dsim_lcd_drv: pointer to activated_ddi driver. + * (it would be registered by mipi-dsi driver.) + * @lcd_info: pointer to mipi_lcd_info structure. + * @state: specifies status of MIPI-DSI controller. + * the status could be RESET, INIT, STOP, HSCLKEN and ULPS. + * @data_lane: specifiec enabled data lane number. + * this variable would be set by driver according to e_no_data_lane + * automatically. + * @e_clk_src: select byte clock source. + * @pd: pointer to MIPI-DSI driver platform data. + * @phy: pointer to the MIPI-DSI PHY + */ +struct mipi_dsim_device { + struct device *dev; + int id; + struct clk *clock; + unsigned int irq; + void __iomem *reg_base; + struct mutex lock; + + struct mipi_dsim_config *dsim_config; + struct mipi_dsim_master_ops *master_ops; + struct mipi_dsim_lcd_device *dsim_lcd_dev; + struct mipi_dsim_lcd_driver *dsim_lcd_drv; + + unsigned int state; + unsigned int data_lane; + unsigned int e_clk_src; + bool suspended; + + struct mipi_dsim_platform_data *pd; + struct phy *phy; +}; + +/* + * struct mipi_dsim_platform_data - interface to platform data + * for mipi-dsi driver. + * + * @lcd_panel_name: specifies lcd panel name registered to mipi-dsi driver. + * lcd panel driver searched would be actived. + * @dsim_config: pointer of structure for configuring mipi-dsi controller. + * @enabled: indicate whether mipi controller got enabled or not. + * @lcd_panel_info: pointer for lcd panel specific structure. + * this structure specifies width, height, timing and polarity and so on. + */ +struct mipi_dsim_platform_data { + char lcd_panel_name[PANEL_NAME_SIZE]; + + struct mipi_dsim_config *dsim_config; + unsigned int enabled; + void *lcd_panel_info; +}; + +/* + * struct mipi_dsim_master_ops - callbacks to mipi-dsi operations. + * + * @cmd_write: transfer command to lcd panel at LP mode. + * @cmd_read: read command from rx register. + * @get_dsim_frame_done: get the status that all screen data have been + * transferred to mipi-dsi. + * @clear_dsim_frame_done: clear frame done status. + * @get_fb_frame_done: get frame done status of display controller. + * @trigger: trigger display controller. + * - this one would be used only in case of CPU mode. + * @set_early_blank_mode: set framebuffer blank mode. + * - this callback should be called prior to fb_blank() by a client driver + * only if needing. + * @set_blank_mode: set framebuffer blank mode. + * - this callback should be called after fb_blank() by a client driver + * only if needing. + */ + +struct mipi_dsim_master_ops { + int (*cmd_write)(struct mipi_dsim_device *dsim, unsigned int data_id, + const unsigned char *data0, unsigned int data1); + int (*cmd_read)(struct mipi_dsim_device *dsim, unsigned int data_id, + unsigned int data0, unsigned int req_size, u8 *rx_buf); + int (*get_dsim_frame_done)(struct mipi_dsim_device *dsim); + int (*clear_dsim_frame_done)(struct mipi_dsim_device *dsim); + + int (*get_fb_frame_done)(struct fb_info *info); + void (*trigger)(struct fb_info *info); + int (*set_early_blank_mode)(struct mipi_dsim_device *dsim, int power); + int (*set_blank_mode)(struct mipi_dsim_device *dsim, int power); +}; + +/* + * device structure for mipi-dsi based lcd panel. + * + * @name: name of the device to use with this device, or an + * alias for that name. + * @dev: driver model representation of the device. + * @id: id of device to be registered. + * @bus_id: bus id for identifing connected bus + * and this bus id should be same as id of mipi_dsim_device. + * @irq: irq number for signaling when framebuffer transfer of + * lcd panel module is completed. + * this irq would be used only for MIPI-DSI based CPU mode lcd panel. + * @master: pointer to mipi-dsi master device object. + * @platform_data: lcd panel specific platform data. + */ +struct mipi_dsim_lcd_device { + char *name; + struct device dev; + int id; + int bus_id; + int irq; + int panel_reverse; + + struct mipi_dsim_device *master; + void *platform_data; +}; + +/* + * driver structure for mipi-dsi based lcd panel. + * + * this structure should be registered by lcd panel driver. + * mipi-dsi driver seeks lcd panel registered through name field + * and calls these callback functions in appropriate time. + * + * @name: name of the driver to use with this device, or an + * alias for that name. + * @id: id of driver to be registered. + * this id would be used for finding device object registered. + */ +struct mipi_dsim_lcd_driver { + char *name; + int id; + + void (*power_on)(struct mipi_dsim_lcd_device *dsim_dev, int enable); + void (*set_sequence)(struct mipi_dsim_lcd_device *dsim_dev); + int (*probe)(struct mipi_dsim_lcd_device *dsim_dev); + int (*remove)(struct mipi_dsim_lcd_device *dsim_dev); + void (*shutdown)(struct mipi_dsim_lcd_device *dsim_dev); + int (*suspend)(struct mipi_dsim_lcd_device *dsim_dev); + int (*resume)(struct mipi_dsim_lcd_device *dsim_dev); +}; + +/* + * register mipi_dsim_lcd_device to mipi-dsi master. + */ +int exynos_mipi_dsi_register_lcd_device(struct mipi_dsim_lcd_device + *lcd_dev); +/** + * register mipi_dsim_lcd_driver object defined by lcd panel driver + * to mipi-dsi driver. + */ +int exynos_mipi_dsi_register_lcd_driver(struct mipi_dsim_lcd_driver + *lcd_drv); +#endif /* _EXYNOS_MIPI_DSIM_H */ |