[PATCH 2/2] s5pc110: add MIPI-DSI controller driver.
InKi Dae
daeinki at gmail.com
Thu Mar 17 05:06:07 EDT 2011
2011/3/17 Kukjin Kim <kgene.kim at samsung.com>:
> Inki Dae wrote:
>>
>> S5PC110 and S5PC210 SoC platform have one or two MIPI-DSI controller.
>> MIPI-DSI controller can be used to connect MIPI-DSI based LCD Panel.
>> this patch adds MIPI-DSI controller driver.
>>
>> to use this driver, MIPI-DSI based LCD panel driver have to register
>> mipi_dsim_lcd_driver object to MIPI-DSI driver and then when MIPI-DSI
>> driver is probed, probe callback of LCD panel driver registered would
>> be called.
>>
>> Signed-off-by: Inki Dae <inki.dae at samsung.com>
>> Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
>> ---
>> arch/arm/plat-s5p/include/plat/dsim.h | 357 ++++++++++++++++
>> arch/arm/plat-s5p/include/plat/regs-dsim.h | 141 ++++++
>> drivers/video/Kconfig | 7 +
>> drivers/video/Makefile | 2 +
>> drivers/video/s5p_mipi_dsi.c | 428 +++++++++++++++++++
>> drivers/video/s5p_mipi_dsi_common.c | 635
>> ++++++++++++++++++++++++++++
>> drivers/video/s5p_mipi_dsi_common.h | 38 ++
>> drivers/video/s5p_mipi_dsi_lowlevel.c | 553
> ++++++++++++++++++++++++
>> drivers/video/s5p_mipi_dsi_lowlevel.h | 98 +++++
>> 9 files changed, 2259 insertions(+), 0 deletions(-)
>> create mode 100644 arch/arm/plat-s5p/include/plat/dsim.h
>> create mode 100644 arch/arm/plat-s5p/include/plat/regs-dsim.h
>> create mode 100644 drivers/video/s5p_mipi_dsi.c
>> create mode 100644 drivers/video/s5p_mipi_dsi_common.c
>> create mode 100644 drivers/video/s5p_mipi_dsi_common.h
>> create mode 100644 drivers/video/s5p_mipi_dsi_lowlevel.c
>> create mode 100644 drivers/video/s5p_mipi_dsi_lowlevel.h
>>
> Hi,
>
> There are some comments.
>
> There is no reason why "dsim.h" is in plat directory because it includes
> everything but it has no dependency on platform. I think, if it is used on
> machine or platform, should be separated and how about mipi_dsim.h like
> plat/mipi_csis.h?
>
hm... ok, don't care. I will correct it to mipi_dsim.h like mipi_csis.h.
> I'm a little confusing for the word between "dsim" and "dsi". Would be
> better if you could use just one such as "csis".
>
> Is find_mipi_client_registered() used for finding LCD panel? If so, where
> does it look for it?
>
Yes, it does.
when init function of MIPI-DSI based lcd panel driver is called at
booting time, mipi_dsim_lcd_driver object of this lcd pane driver
would be registered to dsim_ddi_list of MIPI-DSI driver and then when
probe of MIPI-DSI driver is call, it would find its lcd panel driver
object registered to dsim_ddi_list using
find_mipi_cliend_registered(). also by using this architecture, we
could use other lcd panel drivers with MIPI-DSI driver.
> As you know, EXYNOS4210 has 2 MIPI DSI Master channels. So could you please
> let me know how to support it?
>
this driver was considered only for S5PV210 because we have no any
EXYNOS4210 machine with MIPI-DSI based lcd panel. we can increasingly
consider that in the future.
> Thanks.
>
> Best regards,
> Kgene.
> --
> Kukjin Kim <kgene.kim at samsung.com>, Senior Engineer,
> SW Solution Development Team, Samsung Electronics Co., Ltd.
>
>> diff --git a/arch/arm/plat-s5p/include/plat/dsim.h b/arch/arm/plat-
>> s5p/include/plat/dsim.h
>> new file mode 100644
>> index 0000000..9aa5a93
>> --- /dev/null
>> +++ b/arch/arm/plat-s5p/include/plat/dsim.h
>> @@ -0,0 +1,357 @@
>> +/* linux/arm/arch/plat-s5p/include/plat/dsim.h
>> + *
>> + * Platform data header for Samsung SoC MIPI-DSIM.
>> + *
>> + * Copyright (c) 2009 Samsung Electronics
>> + * InKi Dae <inki.dae at 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 _DSIM_H
>> +#define _DSIM_H
>> +
>> +#include <linux/device.h>
>> +#include <linux/fb.h>
>> +
>> +#define PANEL_NAME_SIZE (32)
>> +
>> +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_NON_BURST_SYNC_PULSE = 2,
>> + 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)
>> + * @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.
>> + * @lcd_panel_info: pointer for lcd panel specific structure.
>> + * this structure specifies width, height, timing and polarity and so
> on.
>> + * @mipi_ddi_pd: pointer to lcd panel platform data.
>> + */
>> +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;
>> +
>> + 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 |
>> + * | 3 | 118 | 1 | 472 |
>> + * | 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 |
>> + * -------------------------------------------
>> + */
>> + 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;
>> +
>> + void *lcd_panel_info;
>> + void *dsim_ddi_pd;
>> +};
>> +
>> +/**
>> + * struct mipi_dsim_device - global interface for mipi-dsi driver.
>> + *
>> + * @dev: driver model representation of the device.
>> + * @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)
>> + * @pd: pointer to MIPI-DSI driver platform data.
>> + * @dsim_info: infomation for configuring mipi-dsi controller.
>> + * @master_ops: callbacks to mipi-dsi operations.
>> + * @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.
>> + * @resume_complete: indicates whether resume operation is completed or
> not.
>> + * @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.
>> + * this variable would be set by driver according to e_byte_clock
>> + * automatically.
>> + * @hs_clk: HS clock rate.
>> + * this variable would be set by driver automatically.
>> + * @byte_clk: Byte clock rate.
>> + * this variable would be set by driver automatically.
>> + * @escape_clk: ESCAPE clock rate.
>> + * this variable would be set by driver automatically.
>> + * @freq_band: indicates Bitclk frequency band for D-PHY global timing.
>> + * Serial Clock(=ByteClk X 8) FreqBand[3:0]
>> + * ~ 99.99 MHz 0000
>> + * 100 ~ 119.99 MHz 0001
>> + * 120 ~ 159.99 MHz 0010
>> + * 160 ~ 199.99 MHz 0011
>> + * 200 ~ 239.99 MHz 0100
>> + * 140 ~ 319.99 MHz 0101
>> + * 320 ~ 389.99 MHz 0110
>> + * 390 ~ 449.99 MHz 0111
>> + * 450 ~ 509.99 MHz 1000
>> + * 510 ~ 559.99 MHz 1001
>> + * 560 ~ 639.99 MHz 1010
>> + * 640 ~ 689.99 MHz 1011
>> + * 690 ~ 769.99 MHz 1100
>> + * 770 ~ 869.99 MHz 1101
>> + * 870 ~ 949.99 MHz 1110
>> + * 950 ~ 1000 MHz 1111
>> + * this variable would be calculated by driver automatically.
>> + */
>> +struct mipi_dsim_device {
>> + struct device *dev;
>> + struct resource *res;
>> + struct clk *clock;
>> + unsigned int irq;
>> + void __iomem *reg_base;
>> +
>> + struct s5p_platform_mipi_dsim *pd;
>> + struct mipi_dsim_config *dsim_config;
>> + struct mipi_dsim_master_ops *master_ops;
>> + struct mipi_dsim_ddi *dsim_ddi;
>> +
>> + unsigned int state;
>> + unsigned int resume_complete;
>> + unsigned int data_lane;
>> + enum mipi_dsim_byte_clk_src e_clk_src;
>> + unsigned long hs_clk;
>> + unsigned long byte_clk;
>> + unsigned long escape_clk;
>> + unsigned char freq_band;
>> +};
>> +
>> +/**
>> + * struct s5p_platform_mipi_dsim - 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.
>> + * @dsim_lcd_info: pointer to structure for configuring
>> + * mipi-dsi based lcd panel.
>> + * @mipi_power: callback pointer for enabling or disabling mipi power.
>> + * @part_reset: callback pointer for reseting mipi phy.
>> + * @init_d_phy: callback pointer for enabing d_phy of dsi master.
>> + * @get_fb_frame_done: callback pointer for getting frame done status of
> the
>> + * display controller(FIMD).
>> + * @trigger: callback pointer for triggering display controller(FIMD)
>> + * in case of CPU mode.
>> + * @delay_for_stabilization: specifies stable time.
>> + * this delay needs when writing data on SFR
>> + * after mipi mode became LP mode.
>> + */
>> +struct s5p_platform_mipi_dsim {
>> + char lcd_panel_name[PANEL_NAME_SIZE];
>> +
>> + struct mipi_dsim_config *dsim_config;
>> + struct mipi_dsim_lcd_config *dsim_lcd_config;
>> +
>> + unsigned int delay_for_stabilization;
>> +
>> + int (*mipi_power) (struct mipi_dsim_device *dsim, unsigned int
> enable);
>> + int (*part_reset) (struct mipi_dsim_device *dsim);
>> + int (*init_d_phy) (struct mipi_dsim_device *dsim);
>> + int (*get_fb_frame_done) (struct fb_info *info);
>> + void (*trigger) (struct fb_info *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.
>> + * @change_dsim_transfer_mode: change transfer mode to LP or HS mode.
>> + * - LP mode is used when commands data ard transferred to lcd panel.
>> + * @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.
>> + */
>> +
>> +struct mipi_dsim_master_ops {
>> + int (*cmd_write) (struct mipi_dsim_device *dsim, unsigned int
> data_id,
>> + unsigned int data0, unsigned int data1);
>> + int (*cmd_read) (struct mipi_dsim_device *dsim, unsigned int
> data_id,
>> + unsigned int data0, unsigned int data1);
>> + int (*get_dsim_frame_done) (struct mipi_dsim_device *dsim);
>> + int (*clear_dsim_frame_done) (struct mipi_dsim_device *dsim);
>> +
>> + int (*change_dsim_transfer_mode) (struct mipi_dsim_device *dsim,
>> + unsigned int mode);
>> +
>> + int (*get_fb_frame_done) (struct fb_info *info);
>> + void (*trigger) (struct fb_info *info);
>> +};
>> +
>> +/**
>> + * device structure for mipi-dsi based lcd panel.
>> + *
>> + * @dev: driver model representation of the device.
>> + * @id: id of device registered and when device is registered
>> + * id would be counted.
>> + * @modalias: name of the driver to use with this device, or an
>> + * alias for that name.
>> + * @mipi_lcd_drv: pointer of mipi_lcd_driver.
>> + * @master: pointer to dsim_device.
>> + */
>> +struct mipi_dsim_lcd_device {
>> + struct device dev;
>> + int id;
>> + char modalias[64];
>> +
>> + struct mipi_dsim_lcd_driver *dsim_drv;
>> + struct mipi_dsim_device *master;
>> +};
>> +
>> +/**
>> + * 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.
>> + */
>> +struct mipi_dsim_lcd_driver {
>> + char *name;
>> +
>> + 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_driver object defined by lcd panel driver
>> + * to mipi-dsi driver.
>> + */
>> +extern int s5p_mipi_dsi_register_lcd_driver(struct mipi_dsim_lcd_driver
>> + *lcd_drv);
>> +
>> +#endif /* _DSIM_H */
>> diff --git a/arch/arm/plat-s5p/include/plat/regs-dsim.h b/arch/arm/plat-
>> s5p/include/plat/regs-dsim.h
>> new file mode 100644
>> index 0000000..7ef5a2f
>> --- /dev/null
>> +++ b/arch/arm/plat-s5p/include/plat/regs-dsim.h
>> @@ -0,0 +1,141 @@
>> +/* linux/arch/arm/plat-s5p/include/plat/regs-dsim.h
>> + *
>> + * Register definition file for Samsung MIPI-DSIM driver
>> + *
>> + * InKi Dae <inki.dae at samsung.com>, Copyright (c) 2009 Samsung
> Electronics
>> + *
>> + * 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 _REGS_DSIM_H
>> +#define _REGS_DSIM_H
>> +
>> +#define S5P_DSIM_STATUS (0x0) /* Status register */
>> +#define S5P_DSIM_SWRST (0x4) /* Software reset register
> */
>> +#define S5P_DSIM_CLKCTRL (0x8) /* Clock control register */
>> +#define S5P_DSIM_TIMEOUT (0xc) /* Time out register */
>> +#define S5P_DSIM_CONFIG (0x10) /* Configuration register */
>> +#define S5P_DSIM_ESCMODE (0x14) /* Escape mode register */
>> +
>> +/* Main display image resolution register */
>> +#define S5P_DSIM_MDRESOL (0x18)
>> +#define S5P_DSIM_MVPORCH (0x1c) /* Main display Vporch register */
>> +#define S5P_DSIM_MHPORCH (0x20) /* Main display Hporch register */
>> +#define S5P_DSIM_MSYNC (0x24) /* Main display sync area
>> register */
>> +
>> +/* Sub display image resolution register */
>> +#define S5P_DSIM_SDRESOL (0x28)
>> +#define S5P_DSIM_INTSRC (0x2c) /* Interrupt source register
> */
>> +#define S5P_DSIM_INTMSK (0x30) /* Interrupt mask register
> */
>> +#define S5P_DSIM_PKTHDR (0x34) /* Packet Header FIFO
> register
>> */
>> +#define S5P_DSIM_PAYLOAD (0x38) /* Payload FIFO register */
>> +#define S5P_DSIM_RXFIFO (0x3c) /* Read FIFO register */
>> +#define S5P_DSIM_FIFOTHLD (0x40) /* FIFO threshold level register */
>> +#define S5P_DSIM_FIFOCTRL (0x44) /* FIFO status and control register
> */
>> +
>> +/* FIFO memory AC characteristic register */
>> +#define S5P_DSIM_PLLCTRL (0x4c) /* PLL control register */
>> +#define S5P_DSIM_PLLTMR (0x50) /* PLL timer register */
>> +#define S5P_DSIM_PHYACCHR (0x54) /* D-PHY AC characteristic register
> */
>> +#define S5P_DSIM_PHYACCHR1 (0x58) /* D-PHY AC characteristic register1
> */
>> +
>> +/* DSIM_STATUS */
>> +#define DSIM_STOP_STATE_DAT(x) (((x) & 0xf) << 0)
>> +#define DSIM_STOP_STATE_CLK (1 << 8)
>> +#define DSIM_TX_READY_HS_CLK (1 << 10)
>> +
>> +/* DSIM_SWRST */
>> +#define DSIM_FUNCRST (1 << 16)
>> +#define DSIM_SWRST (1 << 0)
>> +
>> +/* S5P_DSIM_TIMEOUT */
>> +#define DSIM_LPDR_TOUT_SHIFT (0)
>> +#define DSIM_BTA_TOUT_SHIFT (16)
>> +
>> +/* S5P_DSIM_CLKCTRL */
>> +#define DSIM_LANE_ESC_CLKEN_SHIFT (19)
>> +#define DSIM_BYTE_CLKEN_SHIFT (24)
>> +#define DSIM_BYTE_CLK_SRC_SHIFT (25)
>> +#define DSIM_PLL_BYPASS_SHIFT (27)
>> +#define DSIM_ESC_CLKEN_SHIFT (28)
>> +#define DSIM_TX_REQUEST_HSCLK_SHIFT (31)
>> +#define DSIM_LANE_ESC_CLKEN(x) (((x) & 0x1f) << \
>> + DSIM_LANE_ESC_CLKEN_SHIFT)
>> +#define DSIM_BYTE_CLK_ENABLE (1 << DSIM_BYTE_CLKEN_SHIFT)
>> +#define DSIM_BYTE_CLK_DISABLE (0 << DSIM_BYTE_CLKEN_SHIFT)
>> +#define DSIM_PLL_BYPASS_EXTERNAL (1 << DSIM_PLL_BYPASS_SHIFT)
>> +#define DSIM_ESC_CLKEN_ENABLE (1 << DSIM_ESC_CLKEN_SHIFT)
>> +#define DSIM_ESC_CLKEN_DISABLE (0 << DSIM_ESC_CLKEN_SHIFT)
>> +
>> +/* S5P_DSIM_CONFIG */
>> +#define DSIM_NUM_OF_DATALANE_SHIFT (5)
>> +#define DSIM_HSA_MODE_SHIFT (20)
>> +#define DSIM_HBP_MODE_SHIFT (21)
>> +#define DSIM_HFP_MODE_SHIFT (22)
>> +#define DSIM_HSE_MODE_SHIFT (23)
>> +#define DSIM_AUTO_MODE_SHIFT (24)
>> +#define DSIM_LANE_ENx(x) (((x) & 0x1f) << 0)
>> +
>> +#define DSIM_NUM_OF_DATA_LANE(x) ((x) << DSIM_NUM_OF_DATALANE_SHIFT)
>> +
>> +/* S5P_DSIM_ESCMODE */
>> +#define DSIM_TX_LPDT_SHIFT (6)
>> +#define DSIM_CMD_LPDT_SHIFT (7)
>> +#define DSIM_TX_LPDT_LP (1 << DSIM_TX_LPDT_SHIFT)
>> +#define DSIM_CMD_LPDT_LP (1 << DSIM_CMD_LPDT_SHIFT)
>> +#define DSIM_STOP_STATE_CNT_SHIFT (21)
>> +#define DSIM_FORCE_STOP_STATE_SHIFT (20)
>> +
>> +/* S5P_DSIM_MDRESOL */
>> +#define DSIM_MAIN_STAND_BY (1 << 31)
>> +#define DSIM_MAIN_VRESOL(x) (((x) & 0x7ff) << 16)
>> +#define DSIM_MAIN_HRESOL(x) (((x) & 0X7ff) << 0)
>> +
>> +/* S5P_DSIM_MVPORCH */
>> +#define DSIM_CMD_ALLOW_SHIFT (28)
>> +#define DSIM_STABLE_VFP_SHIFT (16)
>> +#define DSIM_MAIN_VBP_SHIFT (0)
>> +#define DSIM_CMD_ALLOW_MASK (0xf << DSIM_CMD_ALLOW_SHIFT)
>> +#define DSIM_STABLE_VFP_MASK (0x7ff << DSIM_STABLE_VFP_SHIFT)
>> +#define DSIM_MAIN_VBP_MASK (0x7ff << DSIM_MAIN_VBP_SHIFT)
>> +
>> +/* S5P_DSIM_MHPORCH */
>> +#define DSIM_MAIN_HFP_SHIFT (16)
>> +#define DSIM_MAIN_HBP_SHIFT (0)
>> +#define DSIM_MAIN_HFP_MASK ((0xffff) << DSIM_MAIN_HFP_SHIFT)
>> +#define DSIM_MAIN_HBP_MASK ((0xffff) << DSIM_MAIN_HBP_SHIFT)
>> +
>> +/* S5P_DSIM_MSYNC */
>> +#define DSIM_MAIN_VSA_SHIFT (22)
>> +#define DSIM_MAIN_HSA_SHIFT (0)
>> +#define DSIM_MAIN_VSA_MASK ((0x3ff) << DSIM_MAIN_VSA_SHIFT)
>> +#define DSIM_MAIN_HSA_MASK ((0xffff) << DSIM_MAIN_HSA_SHIFT)
>> +
>> +/* S5P_DSIM_SDRESOL */
>> +#define DSIM_SUB_STANDY_SHIFT (31)
>> +#define DSIM_SUB_VRESOL_SHIFT (16)
>> +#define DSIM_SUB_HRESOL_SHIFT (0)
>> +#define DSIM_SUB_STANDY_MASK ((0x1) << DSIM_SUB_STANDY_SHIFT)
>> +#define DSIM_SUB_VRESOL_MASK ((0x7ff) << DSIM_SUB_VRESOL_SHIFT)
>> +#define DSIM_SUB_HRESOL_MASK ((0x7ff) << DSIM_SUB_HRESOL_SHIFT)
>> +
>> +/* S5P_DSIM_INTSRC */
>> +#define INTSRC_FRAME_DONE (1 << 24)
>> +#define INTSRC_PLL_STABLE (1 << 31)
>> +
>> +/* S5P_DSIM_INTMSK */
>> +#define INTMSK_FRAME_DONE (1 << 24)
>> +
>> +/* S5P_DSIM_FIFOCTRL */
>> +#define SFR_HEADER_EMPTY (1 << 22)
>> +
>> +/* S5P_DSIM_PHYACCHR */
>> +#define DSIM_AFC_CTL(x) (((x) & 0x7) << 5)
>> +
>> +/* S5P_DSIM_PLLCTRL */
>> +#define DSIM_PLL_EN_SHIFT (23)
>> +#define DSIM_FREQ_BAND_SHIFT (24)
>> +
>> +#endif /* _REGS_DSIM_H */
>> diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
>> index 932e7bb..9744e32 100644
>> --- a/drivers/video/Kconfig
>> +++ b/drivers/video/Kconfig
>> @@ -2098,6 +2098,13 @@ config FB_S3C2410_DEBUG
>> Turn on debugging messages. Note that you can set/unset at run
> time
>> through sysfs
>>
>> +config S5P_MIPI_DSI
>> + tristate "Samsung SoC MIPI-DSI support."
>> + depends on FB_S3C && ARCH_S5PV210
>> + default n
>> + ---help---
>> + This enables support for MIPI-DSI device.
>> +
>> config FB_NUC900
>> bool "NUC900 LCD framebuffer support"
>> depends on FB && ARCH_W90X900
>> diff --git a/drivers/video/Makefile b/drivers/video/Makefile
>> index 36aca21..12052a2 100644
>> --- a/drivers/video/Makefile
>> +++ b/drivers/video/Makefile
>> @@ -119,6 +119,8 @@ obj-$(CONFIG_FB_SH7760) += sh7760fb.o
>> obj-$(CONFIG_FB_IMX) += imxfb.o
>> obj-$(CONFIG_FB_S3C) += s3c-fb.o
>> obj-$(CONFIG_FB_S3C2410) += s3c2410fb.o
>> +obj-$(CONFIG_S5P_MIPI_DSI) += s5p_mipi_dsi.o s5p_mipi_dsi_common.o \
>> + s5p_mipi_dsi_lowlevel.o
>> obj-$(CONFIG_FB_FSL_DIU) += fsl-diu-fb.o
>> obj-$(CONFIG_FB_COBALT) += cobalt_lcdfb.o
>> obj-$(CONFIG_FB_PNX4008_DUM) += pnx4008/
>> diff --git a/drivers/video/s5p_mipi_dsi.c b/drivers/video/s5p_mipi_dsi.c
>> new file mode 100644
>> index 0000000..0bd9a44
>> --- /dev/null
>> +++ b/drivers/video/s5p_mipi_dsi.c
>> @@ -0,0 +1,428 @@
>> +/* linux/drivers/video/s5p_mipi_dsi.c
>> + *
>> + * Samsung SoC MIPI-DSIM driver.
>> + *
>> + * InKi Dae, <inki.dae at 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.
>> +*/
>> +
>> +#include <linux/module.h>
>> +#include <linux/kernel.h>
>> +#include <linux/errno.h>
>> +#include <linux/clk.h>
>> +#include <linux/mutex.h>
>> +#include <linux/wait.h>
>> +#include <linux/fs.h>
>> +#include <linux/mm.h>
>> +#include <linux/fb.h>
>> +#include <linux/ctype.h>
>> +#include <linux/platform_device.h>
>> +#include <linux/io.h>
>> +#include <linux/irq.h>
>> +#include <linux/memory.h>
>> +#include <linux/delay.h>
>> +#include <linux/interrupt.h>
>> +#include <linux/kthread.h>
>> +#include <linux/regulator/consumer.h>
>> +#include <linux/notifier.h>
>> +
>> +#include <plat/fb.h>
>> +#include <plat/regs-dsim.h>
>> +#include <plat/dsim.h>
>> +
>> +#include <mach/map.h>
>> +
>> +#include "s5p_mipi_dsi_common.h"
>> +
>> +#define master_to_driver(a) (a->dsim_ddi->dsim_lcd_drv)
>> +#define master_to_device(a) (a->dsim_ddi->dsim_lcd_dev)
>> +#define set_master_to_device(a) (a->dsim_ddi->dsim_lcd_dev->master =
> a)
>> +
>> +struct mipi_dsim_ddi {
>> + struct list_head list;
>> + struct mipi_dsim_lcd_driver *dsim_lcd_drv;
>> + struct mipi_dsim_lcd_device *dsim_lcd_dev;
>> +};
>> +
>> +static LIST_HEAD(dsim_ddi_list);
>> +static DEFINE_MUTEX(mipi_lock);
>> +
>> +static struct s5p_platform_mipi_dsim *to_dsim_plat(struct platform_device
>> *pdev)
>> +{
>> + return (struct s5p_platform_mipi_dsim *)pdev->dev.platform_data;
>> +}
>> +
>> +static irqreturn_t s5p_mipi_dsi_interrupt_handler(int irq, void *dev_id)
>> +{
>> + return IRQ_HANDLED;
>> +}
>> +
>> +int s5p_mipi_dsi_register_lcd_driver(struct mipi_dsim_lcd_driver
> *lcd_drv)
>> +{
>> + struct mipi_dsim_ddi *dsim_ddi;
>> + struct mipi_dsim_lcd_device *dsim_lcd_dev;
>> + static unsigned int id;
>> + int ret;
>> +
>> + dsim_ddi = kzalloc(sizeof(struct mipi_dsim_ddi), GFP_KERNEL);
>> + if (!dsim_ddi) {
>> + printk(KERN_ERR "failed to allocate dsim_ddi object.\n");
>> + return -EFAULT;
>> + }
>> +
>> + dsim_ddi->dsim_lcd_drv = lcd_drv;
>> +
>> + dsim_lcd_dev = kzalloc(sizeof(struct mipi_dsim_lcd_device),
>> GFP_KERNEL);
>> + if (!dsim_lcd_dev) {
>> + printk(KERN_ERR "failed to allocate dsim_lcd_dev
> object.\n");
>> + ret = -EFAULT;
>> + goto err_dsim;
>> + }
>> +
>> + mutex_lock(&mipi_lock);
>> +
>> + dsim_lcd_dev->id = id++;
>> + dsim_ddi->dsim_lcd_dev = dsim_lcd_dev;
>> +
>> + device_initialize(&dsim_lcd_dev->dev);
>> +
>> + strcpy(dsim_lcd_dev->modalias, lcd_drv->name);
>> +
>> + dev_set_name(&dsim_lcd_dev->dev, "mipi-dsi.%d\n", dsim_lcd_dev->id);
>> +
>> + ret = device_add(&dsim_lcd_dev->dev);
>> + if (ret < 0) {
>> + printk(KERN_ERR "can't %s %s, status %d\n",
>> + "add", dev_name(&dsim_lcd_dev->dev), ret);
>> + id--;
>> + goto err_device_add;
>> + }
>> +
>> + list_add_tail(&dsim_ddi->list, &dsim_ddi_list);
>> +
>> + mutex_unlock(&mipi_lock);
>> +
>> + printk(KERN_DEBUG "registered panel driver(%s) to mipi-dsi
> driver.\n",
>> + lcd_drv->name);
>> +
>> + return ret;
>> +
>> +err_device_add:
>> + kfree(dsim_lcd_dev);
>> +
>> +err_dsim:
>> + kfree(dsim_ddi);
>> +
>> + return ret;
>> +}
>> +
>> +/*
>> + * This function is a wrapper for changing transfer mode.
>> + * It is used for the panel driver before and after changing gamma value.
>> + */
>> +static int s5p_mipi_dsi_change_transfer_mode(struct mipi_dsim_device
> *dsim,
>> + unsigned int mode)
>> +{
>> + if (mode < 0 || mode > 1) {
>> + dev_err(dsim->dev, "mode range should be 0 or 1.\n");
>> + return -EINVAL;
>> + }
>> +
>> + s5p_mipi_dsi_set_data_transfer_mode(dsim, mode);
>> +
>> + return 0;
>> +}
>> +
>> +static struct mipi_dsim_ddi *find_mipi_client_registered
>> + (struct mipi_dsim_device *dsim, const char *name)
>> +{
>> + struct mipi_dsim_ddi *dsim_ddi;
>> + struct mipi_dsim_lcd_driver *dsim_lcd_drv = NULL;
>> +
>> + mutex_lock(&mipi_lock);
>> +
>> + dev_dbg(dsim->dev, "find lcd panel driver(%s).\n",
>> + name);
>> +
>> + list_for_each_entry(dsim_ddi, &dsim_ddi_list, list) {
>> + dsim_lcd_drv = dsim_ddi->dsim_lcd_drv;
>> +
>> + if ((strcmp(dsim_lcd_drv->name, name)) == 0) {
>> + mutex_unlock(&mipi_lock);
>> + dev_dbg(dsim->dev, "found!!!(%s).\n",
>> + dsim_lcd_drv->name);
>> + return dsim_ddi;
>> + }
>> + }
>> +
>> + dev_warn(dsim->dev, "failed to find lcd panel driver(%s).\n",
>> + name);
>> +
>> + mutex_unlock(&mipi_lock);
>> +
>> + return NULL;
>> +}
>> +
>> +/* define MIPI-DSI Master operations. */
>> +static struct mipi_dsim_master_ops master_ops = {
>> + .cmd_write = s5p_mipi_dsi_wr_data,
>> + .get_dsim_frame_done =
> s5p_mipi_dsi_get_frame_done_status,
>> + .clear_dsim_frame_done = s5p_mipi_dsi_clear_frame_done,
>> + .change_dsim_transfer_mode = s5p_mipi_dsi_change_transfer_mode,
>> +};
>> +
>> +static int s5p_mipi_dsi_probe(struct platform_device *pdev)
>> +{
>> + struct resource *res;
>> + struct mipi_dsim_device *dsim;
>> + struct mipi_dsim_config *dsim_config;
>> + struct s5p_platform_mipi_dsim *dsim_pd;
>> + int ret = -1;
>> +
>> + dsim = kzalloc(sizeof(struct mipi_dsim_device), GFP_KERNEL);
>> + if (!dsim) {
>> + dev_err(&pdev->dev, "failed to allocate dsim object.\n");
>> + return -EFAULT;
>> + }
>> +
>> + dsim->pd = to_dsim_plat(pdev);
>> + dsim->dev = &pdev->dev;
>> + dsim->resume_complete = 0;
>> +
>> + /* get s5p_platform_mipi_dsim. */
>> + dsim_pd = (struct s5p_platform_mipi_dsim *)dsim->pd;
>> + /* get mipi_dsim_config. */
>> + dsim_config = dsim_pd->dsim_config;
>> + dsim->dsim_config = dsim_config;
>> + dsim->master_ops = &master_ops;
>> +
>> + dsim->clock = clk_get(&pdev->dev, "dsim");
>> + if (IS_ERR(dsim->clock)) {
>> + dev_err(&pdev->dev, "failed to get dsim clock source\n");
>> + goto err_clock_get;
>> + }
>> +
>> + clk_enable(dsim->clock);
>> +
>> + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
>> + if (!res) {
>> + dev_err(&pdev->dev, "failed to get io memory region\n");
>> + ret = -EINVAL;
>> + goto err_platform_get;
>> + }
>> +
>> + res = request_mem_region(res->start, resource_size(res),
>> + dev_name(&pdev->dev));
>> + if (!res) {
>> + dev_err(&pdev->dev, "failed to request io memory region\n");
>> + ret = -EINVAL;
>> + goto err_mem_region;
>> + }
>> +
>> + dsim->res = res;
>> +
>> + dsim->reg_base = ioremap(res->start, resource_size(res));
>> + if (!dsim->reg_base) {
>> + dev_err(&pdev->dev, "failed to remap io region\n");
>> + ret = -EINVAL;
>> + goto err_mem_region;
>> + }
>> +
>> + /*
>> + * it uses frame done interrupt handler
>> + * only in case of MIPI Video mode.
>> + */
>> + if (dsim_config->e_interface == DSIM_VIDEO) {
>> + dsim->irq = platform_get_irq(pdev, 0);
>> + if (request_irq(dsim->irq, s5p_mipi_dsi_interrupt_handler,
>> + IRQF_DISABLED, "mipi-dsi", dsim)) {
>> + dev_err(&pdev->dev, "request_irq failed.\n");
>> + goto err_trigger_irq;
>> + }
>> + }
>> +
>> + if (dsim->pd->mipi_power)
>> + dsim->pd->mipi_power(dsim, 1);
>> + else {
>> + dev_err(&pdev->dev, "mipi_power is NULL.\n");
>> + goto err_mipi_power;
>> + }
>> +
>> + /* find lcd panel driver registered to mipi-dsi driver. */
>> + dsim->dsim_ddi = find_mipi_client_registered(dsim,
>> + dsim_pd->lcd_panel_name);
>> + if (dsim->dsim_config == NULL) {
>> + dev_err(&pdev->dev, "dsim_config is NULL.\n");
>> + goto err_dsim_config;
>> + }
>> +
>> + /* set dsim to master of mipi_dsim_lcd_device. */
>> + set_master_to_device(dsim);
>> +
>> + s5p_mipi_dsi_init_dsim(dsim);
>> + s5p_mipi_dsi_init_link(dsim);
>> +
>> + s5p_mipi_dsi_set_hs_enable(dsim);
>> + /* set cpu command transfer mode to hs. */
>> + s5p_mipi_dsi_set_data_transfer_mode(dsim, 0);
>> +
>> + /* initialize mipi-dsi client(lcd panel). */
>> + if (master_to_driver(dsim) && (master_to_driver(dsim))->probe)
>> + (master_to_driver(dsim))->probe(master_to_device(dsim));
>> +
>> + /* it needs delay for stabilization */
>> + mdelay(dsim->pd->delay_for_stabilization);
>> +
>> + s5p_mipi_dsi_set_display_mode(dsim, dsim->dsim_config);
>> +
>> + /* set lcdc data transfer mode to hs. */
>> + s5p_mipi_dsi_set_data_transfer_mode(dsim, 1);
>> +
>> + /* in case of command mode, trigger. */
>> + if (dsim->dsim_config->e_interface == DSIM_COMMAND) {
>> + if (dsim_pd->trigger)
>> + dsim_pd->trigger(registered_fb[0]);
>> + else
>> + dev_warn(&pdev->dev, "trigger is null.\n");
>> + }
>> +
>> + platform_set_drvdata(pdev, dsim);
>> +
>> + dev_info(&pdev->dev, "mipi-dsi driver(%s mode) has been probed.\n",
>> + (dsim_config->e_interface == DSIM_COMMAND) ?
>> + "CPU" : "RGB");
>> +
>> + return 0;
>> +
>> +err_dsim_config:
>> + dsim->pd->mipi_power(dsim, 0);
>> +
>> +err_mipi_power:
>> +err_trigger_irq:
>> + release_resource(dsim->res);
>> + kfree(dsim->res);
>> +
>> + iounmap((void __iomem *) dsim->reg_base);
>> +
>> +err_mem_region:
>> +err_platform_get:
>> + clk_disable(dsim->clock);
>> + clk_put(dsim->clock);
>> +
>> +err_clock_get:
>> + kfree(dsim);
>> +
>> + return ret;
>> +
>> +}
>> +
>> +static int __devexit s5p_mipi_dsi_remove(struct platform_device *pdev)
>> +{
>> + struct mipi_dsim_device *dsim = platform_get_drvdata(pdev);
>> + struct mipi_dsim_ddi *dsim_ddi = NULL;
>> +
>> + if (dsim->dsim_config->e_interface == DSIM_VIDEO)
>> + free_irq(dsim->irq, dsim);
>> +
>> + iounmap(dsim->reg_base);
>> +
>> + clk_disable(dsim->clock);
>> + clk_put(dsim->clock);
>> +
>> + release_resource(dsim->res);
>> + kfree(dsim->res);
>> +
>> + list_for_each_entry(dsim_ddi, &dsim_ddi_list, list)
>> + kfree(dsim_ddi);
>> +
>> + kfree(dsim);
>> +
>> + return 0;
>> +}
>> +
>> +#ifdef CONFIG_PM
>> +static int s5p_mipi_dsi_suspend(struct platform_device *pdev,
>> + pm_message_t state)
>> +{
>> + struct mipi_dsim_device *dsim = platform_get_drvdata(pdev);
>> +
>> + dsim->resume_complete = 0;
>> +
>> + if (master_to_driver(dsim) && (master_to_driver(dsim))->suspend)
>> + (master_to_driver(dsim))->suspend(master_to_device(dsim));
>> +
>> + clk_disable(dsim->clock);
>> +
>> + if (dsim->pd->mipi_power)
>> + dsim->pd->mipi_power(dsim, 0);
>> +
>> + return 0;
>> +}
>> +
>> +static int s5p_mipi_dsi_resume(struct platform_device *pdev)
>> +{
>> + struct mipi_dsim_device *dsim = platform_get_drvdata(pdev);
>> +
>> + if (dsim->pd->mipi_power)
>> + dsim->pd->mipi_power(dsim, 1);
>> +
>> + clk_enable(dsim->clock);
>> +
>> + s5p_mipi_dsi_init_dsim(dsim);
>> + s5p_mipi_dsi_init_link(dsim);
>> +
>> + s5p_mipi_dsi_set_hs_enable(dsim);
>> + /* set cpu command transfer mode to hs. */
>> + s5p_mipi_dsi_set_data_transfer_mode(dsim, 0);
>> +
>> + /* it needs delay for stabilization */
>> + mdelay(dsim->pd->delay_for_stabilization);
>> +
>> + if (master_to_driver(dsim) && (master_to_driver(dsim))->resume)
>> + (master_to_driver(dsim))->resume(master_to_device(dsim));
>> +
>> + s5p_mipi_dsi_set_display_mode(dsim, dsim->dsim_config);
>> +
>> + /* set lcdc data transfer mode to hs. */
>> + s5p_mipi_dsi_set_data_transfer_mode(dsim, 1);
>> +
>> + dsim->resume_complete = 1;
>> +
>> + return 0;
>> +}
>> +#else
>> +#define s5p_mipi_dsi_suspend NULL
>> +#define s5p_mipi_dsi_resume NULL
>> +#endif
>> +
>> +static struct platform_driver s5p_mipi_dsi_driver = {
>> + .probe = s5p_mipi_dsi_probe,
>> + .remove = __devexit_p(s5p_mipi_dsi_remove),
>> + .suspend = s5p_mipi_dsi_suspend,
>> + .resume = s5p_mipi_dsi_resume,
>> + .driver = {
>> + .name = "s5p-mipi-dsim",
>> + .owner = THIS_MODULE,
>> + },
>> +};
>> +
>> +static int s5p_mipi_dsi_register(void)
>> +{
>> + platform_driver_register(&s5p_mipi_dsi_driver);
>> +
>> + return 0;
>> +}
>> +
>> +static void s5p_mipi_dsi_unregister(void)
>> +{
>> + platform_driver_unregister(&s5p_mipi_dsi_driver);
>> +}
>> +
>> +module_init(s5p_mipi_dsi_register);
>> +module_exit(s5p_mipi_dsi_unregister);
>> +
>> +MODULE_AUTHOR("InKi Dae <inki.dae at samsung.com>");
>> +MODULE_DESCRIPTION("Samusung MIPI-DSI driver");
>> +MODULE_LICENSE("GPL");
>> diff --git a/drivers/video/s5p_mipi_dsi_common.c
>> b/drivers/video/s5p_mipi_dsi_common.c
>> new file mode 100644
>> index 0000000..cb5c280
>> --- /dev/null
>> +++ b/drivers/video/s5p_mipi_dsi_common.c
>> @@ -0,0 +1,635 @@
>> +/* linux/drivers/video/s5p_mipi_dsi_common.c
>> + *
>> + * Samsung MIPI-DSI common driver.
>> + *
>> + * InKi Dae, <inki.dae at 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.
>> +*/
>> +
>> +#include <linux/module.h>
>> +#include <linux/kernel.h>
>> +#include <linux/errno.h>
>> +#include <linux/mutex.h>
>> +#include <linux/wait.h>
>> +#include <linux/fs.h>
>> +#include <linux/mm.h>
>> +#include <linux/fb.h>
>> +#include <linux/ctype.h>
>> +#include <linux/platform_device.h>
>> +#include <linux/io.h>
>> +#include <linux/memory.h>
>> +#include <linux/delay.h>
>> +#include <linux/kthread.h>
>> +
>> +#include <video/mipi_display.h>
>> +
>> +#include <plat/fb.h>
>> +#include <plat/regs-dsim.h>
>> +
>> +#include <mach/map.h>
>> +#include <plat/dsim.h>
>> +#include <plat/regs-dsim.h>
>> +
>> +#include "s5p_mipi_dsi_lowlevel.h"
>> +
>> +#define MHZ (1000 * 1000)
>> +#define FIN_HZ (24 * MHZ)
>> +
>> +#define DFIN_PLL_MIN_HZ (6 * MHZ)
>> +#define DFIN_PLL_MAX_HZ (12 * MHZ)
>> +
>> +#define DFVCO_MIN_HZ (500 * MHZ)
>> +#define DFVCO_MAX_HZ (1000 * MHZ)
>> +
>> +#define TRY_GET_FIFO_TIMEOUT (5000 * 2)
>> +
>> +#define DSIM_ESCCLK_ON (0x0)
>> +#define DSIM_ESCCLK_OFF (0x1)
>> +
>> +/* MIPI-DSIM status types. */
>> +enum {
>> + DSIM_STATE_INIT, /* should be initialized. */
>> + DSIM_STATE_STOP, /* CPU and LCDC are LP mode. */
>> + DSIM_STATE_HSCLKEN, /* HS clock was enabled. */
>> + DSIM_STATE_ULPS
>> +};
>> +
>> +/* define DSI lane types. */
>> +enum {
>> + DSIM_LANE_CLOCK = (1 << 0),
>> + DSIM_LANE_DATA0 = (1 << 1),
>> + DSIM_LANE_DATA1 = (1 << 2),
>> + DSIM_LANE_DATA2 = (1 << 3),
>> + DSIM_LANE_DATA3 = (1 << 4)
>> +};
>> +
>> +static unsigned int dpll_table[15] = {
>> + 100, 120, 170, 220, 270,
>> + 320, 390, 450, 510, 560,
>> + 640, 690, 770, 870, 950 };
>> +
>> +static void s5p_mipi_dsi_long_data_wr(struct mipi_dsim_device *dsim,
>> + unsigned int data0, unsigned int data1)
>> +{
>> + unsigned int data_cnt = 0, payload = 0;
>> +
>> + /* in case that data count is more then 4 */
>> + for (data_cnt = 0; data_cnt < data1; data_cnt += 4) {
>> + /*
>> + * after sending 4bytes per one time,
>> + * send remainder data less then 4.
>> + */
>> + if ((data1 - data_cnt) < 4) {
>> + if ((data1 - data_cnt) == 3) {
>> + payload = *(u8 *)(data0 + data_cnt) |
>> + (*(u8 *)(data0 + (data_cnt + 1))) << 8 |
>> + (*(u8 *)(data0 + (data_cnt + 2))) <<
> 16;
>> + dev_dbg(dsim->dev, "count = 3 payload
>> = %x, %x %x %x\n",
>> + payload, *(u8 *)(data0 + data_cnt),
>> + *(u8 *)(data0 + (data_cnt + 1)),
>> + *(u8 *)(data0 + (data_cnt + 2)));
>> + } else if ((data1 - data_cnt) == 2) {
>> + payload = *(u8 *)(data0 + data_cnt) |
>> + (*(u8 *)(data0 + (data_cnt + 1))) <<
> 8;
>> + dev_dbg(dsim->dev,
>> + "count = 2 payload = %x, %x %x\n", payload,
>> + *(u8 *)(data0 + data_cnt),
>> + *(u8 *)(data0 + (data_cnt + 1)));
>> + } else if ((data1 - data_cnt) == 1) {
>> + payload = *(u8 *)(data0 + data_cnt);
>> + }
>> +
>> + s5p_mipi_dsi_wr_tx_data(dsim, payload);
>> + /* send 4bytes per one time. */
>> + } else {
>> + payload = *(u8 *)(data0 + data_cnt) |
>> + (*(u8 *)(data0 + (data_cnt + 1))) << 8 |
>> + (*(u8 *)(data0 + (data_cnt + 2))) << 16 |
>> + (*(u8 *)(data0 + (data_cnt + 3))) << 24;
>> +
>> + dev_dbg(dsim->dev,
>> + "count = 4 payload = %x, %x %x %x %x\n",
>> + payload, *(u8 *)(data0 + data_cnt),
>> + *(u8 *)(data0 + (data_cnt + 1)),
>> + *(u8 *)(data0 + (data_cnt + 2)),
>> + *(u8 *)(data0 + (data_cnt + 3)));
>> +
>> + s5p_mipi_dsi_wr_tx_data(dsim, payload);
>> + }
>> + }
>> +}
>> +
>> +int s5p_mipi_dsi_wr_data(struct mipi_dsim_device *dsim, unsigned int
> data_id,
>> + unsigned int data0, unsigned int data1)
>> +{
>> + unsigned int timeout = TRY_GET_FIFO_TIMEOUT;
>> + unsigned long delay_val, udelay;
>> + unsigned int check_rx_ack = 0;
>> +
>> + if (dsim->state == DSIM_STATE_ULPS) {
>> + dev_err(dsim->dev, "state is ULPS.\n");
>> +
>> + return -EINVAL;
>> + }
>> +
>> + delay_val = MHZ / dsim->dsim_config->esc_clk;
>> + udelay = 10 * delay_val;
>> +
>> + mdelay(udelay);
>> +
>> + /* only if transfer mode is LPDT, wait SFR becomes empty. */
>> + if (dsim->state == DSIM_STATE_STOP) {
>> + while (!(s5p_mipi_dsi_get_fifo_state(dsim) &
>> + SFR_HEADER_EMPTY)) {
>> + if ((timeout--) > 0)
>> + mdelay(1);
>> + else {
>> + dev_err(dsim->dev,
>> + "SRF header fifo is not empty.\n");
>> + return -EINVAL;
>> + }
>> + }
>> + }
>> +
>> + switch (data_id) {
>> + /* short packet types of packet types for command. */
>> + case MIPI_DSI_GENERIC_SHORT_WRITE_0_PARAM:
>> + case MIPI_DSI_GENERIC_SHORT_WRITE_1_PARAM:
>> + case MIPI_DSI_GENERIC_SHORT_WRITE_2_PARAM:
>> + case MIPI_DSI_DCS_SHORT_WRITE:
>> + case MIPI_DSI_DCS_SHORT_WRITE_PARAM:
>> + case MIPI_DSI_SET_MAXIMUM_RETURN_PACKET_SIZE:
>> + s5p_mipi_dsi_wr_tx_header(dsim, data_id, data0, data1);
>> + if (check_rx_ack)
>> + /* process response func should be implemented */
>> + return 0;
>> + else
>> + return -EINVAL;
>> +
>> + /* general command */
>> + case MIPI_DSI_COLOR_MODE_OFF:
>> + case MIPI_DSI_COLOR_MODE_ON:
>> + case MIPI_DSI_SHUTDOWN_PERIPHERAL:
>> + case MIPI_DSI_TURN_ON_PERIPHERAL:
>> + s5p_mipi_dsi_wr_tx_header(dsim, data_id, data0, data1);
>> + if (check_rx_ack)
>> + /* process response func should be implemented. */
>> + return 0;
>> + else
>> + return -EINVAL;
>> +
>> + /* packet types for video data */
>> + case MIPI_DSI_V_SYNC_START:
>> + case MIPI_DSI_V_SYNC_END:
>> + case MIPI_DSI_H_SYNC_START:
>> + case MIPI_DSI_H_SYNC_END:
>> + case MIPI_DSI_END_OF_TRANSMISSION:
>> + return 0;
>> +
>> + /* short and response packet types for command */
>> + case MIPI_DSI_GENERIC_READ_REQUEST_0_PARAM:
>> + case MIPI_DSI_GENERIC_READ_REQUEST_1_PARAM:
>> + case MIPI_DSI_GENERIC_READ_REQUEST_2_PARAM:
>> + case MIPI_DSI_DCS_READ:
>> + s5p_mipi_dsi_clear_all_interrupt(dsim);
>> + s5p_mipi_dsi_wr_tx_header(dsim, data_id, data0, data1);
>> + /* process response func should be implemented. */
>> + return 0;
>> +
>> + /* long packet type and null packet */
>> + case MIPI_DSI_NULL_PACKET:
>> + case MIPI_DSI_BLANKING_PACKET:
>> + return 0;
>> + case MIPI_DSI_GENERIC_LONG_WRITE:
>> + case MIPI_DSI_DCS_LONG_WRITE:
>> + {
>> + unsigned int size, data_cnt = 0, payload = 0;
>> +
>> + size = data1 * 4;
>> +
>> + /* if data count is less then 4, then send 3bytes data. */
>> + if (data1 < 4) {
>> + payload = *(u8 *)(data0) |
>> + *(u8 *)(data0 + 1) << 8 |
>> + *(u8 *)(data0 + 2) << 16;
>> +
>> + s5p_mipi_dsi_wr_tx_data(dsim, payload);
>> +
>> + dev_dbg(dsim->dev, "count = %d payload
>> = %x,%x %x %x\n",
>> + data1, payload,
>> + *(u8 *)(data0 + data_cnt),
>> + *(u8 *)(data0 + (data_cnt + 1)),
>> + *(u8 *)(data0 + (data_cnt + 2)));
>> + /* in case that data count is more then 4 */
>> + } else
>> + s5p_mipi_dsi_long_data_wr(dsim, data0, data1);
>> +
>> + /* put data into header fifo */
>> + s5p_mipi_dsi_wr_tx_header(dsim, data_id, data1 & 0xff,
>> + (data1 & 0xff00) >> 8);
>> +
>> + }
>> + if (check_rx_ack)
>> + /* process response func should be implemented. */
>> + return 0;
>> + else
>> + return -EINVAL;
>> +
>> + /* packet typo for video data */
>> + case MIPI_DSI_PACKED_PIXEL_STREAM_16:
>> + case MIPI_DSI_PACKED_PIXEL_STREAM_18:
>> + case MIPI_DSI_PIXEL_STREAM_3BYTE_18:
>> + case MIPI_DSI_PACKED_PIXEL_STREAM_24:
>> + if (check_rx_ack)
>> + /* process response func should be implemented. */
>> + return 0;
>> + else
>> + return -EINVAL;
>> + default:
>> + dev_warn(dsim->dev,
>> + "data id %x is not supported current DSI spec.\n",
>> + data_id);
>> +
>> + return -EINVAL;
>> + }
>> +
>> + return 0;
>> +}
>> +
>> +int s5p_mipi_dsi_pll_on(struct mipi_dsim_device *dsim, unsigned int
> enable)
>> +{
>> + int sw_timeout;
>> +
>> + if (enable) {
>> + sw_timeout = 1000;
>> +
>> + s5p_mipi_dsi_clear_interrupt(dsim);
>> + s5p_mipi_dsi_enable_pll(dsim, 1);
>> + while (1) {
>> + sw_timeout--;
>> + if (s5p_mipi_dsi_is_pll_stable(dsim))
>> + return 0;
>> + if (sw_timeout == 0)
>> + return -EINVAL;
>> + }
>> + } else
>> + s5p_mipi_dsi_enable_pll(dsim, 0);
>> +
>> + return 0;
>> +}
>> +
>> +unsigned long s5p_mipi_dsi_change_pll(struct mipi_dsim_device *dsim,
>> + unsigned int pre_divider, unsigned int main_divider,
>> + unsigned int scaler)
>> +{
>> + unsigned long dfin_pll, dfvco, dpll_out;
>> + unsigned int i, freq_band = 0xf;
>> +
>> + dfin_pll = (FIN_HZ / pre_divider);
>> +
>> + if (dfin_pll < DFIN_PLL_MIN_HZ || dfin_pll > DFIN_PLL_MAX_HZ) {
>> + dev_warn(dsim->dev, "fin_pll range should be 6MHz ~
> 12MHz\n");
>> + s5p_mipi_dsi_enable_afc(dsim, 0, 0);
>> + } else {
>> + if (dfin_pll < 7 * MHZ)
>> + s5p_mipi_dsi_enable_afc(dsim, 1, 0x1);
>> + else if (dfin_pll < 8 * MHZ)
>> + s5p_mipi_dsi_enable_afc(dsim, 1, 0x0);
>> + else if (dfin_pll < 9 * MHZ)
>> + s5p_mipi_dsi_enable_afc(dsim, 1, 0x3);
>> + else if (dfin_pll < 10 * MHZ)
>> + s5p_mipi_dsi_enable_afc(dsim, 1, 0x2);
>> + else if (dfin_pll < 11 * MHZ)
>> + s5p_mipi_dsi_enable_afc(dsim, 1, 0x5);
>> + else
>> + s5p_mipi_dsi_enable_afc(dsim, 1, 0x4);
>> + }
>> +
>> + dfvco = dfin_pll * main_divider;
>> + dev_dbg(dsim->dev, "dfvco = %lu, dfin_pll = %lu, main_divider =
> %d\n",
>> + dfvco, dfin_pll, main_divider);
>> + if (dfvco < DFVCO_MIN_HZ || dfvco > DFVCO_MAX_HZ)
>> + dev_warn(dsim->dev, "fvco range should be 500MHz ~
> 1000MHz\n");
>> +
>> + dpll_out = dfvco / (1 << scaler);
>> + dev_dbg(dsim->dev, "dpll_out = %lu, dfvco = %lu, scaler = %d\n",
>> + dpll_out, dfvco, scaler);
>> +
>> + for (i = 0; i < ARRAY_SIZE(dpll_table); i++) {
>> + if (dpll_out < dpll_table[i] * MHZ) {
>> + freq_band = i;
>> + break;
>> + }
>> + }
>> +
>> + dev_dbg(dsim->dev, "freq_band = %d\n", freq_band);
>> +
>> + s5p_mipi_dsi_pll_freq(dsim, pre_divider, main_divider, scaler);
>> +
>> + s5p_mipi_dsi_hs_zero_ctrl(dsim, 0);
>> + s5p_mipi_dsi_prep_ctrl(dsim, 0);
>> +
>> + /* Freq Band */
>> + s5p_mipi_dsi_pll_freq_band(dsim, freq_band);
>> +
>> + /* Stable time */
>> + s5p_mipi_dsi_pll_stable_time(dsim,
> dsim->dsim_config->pll_stable_time);
>> +
>> + /* Enable PLL */
>> + dev_dbg(dsim->dev, "FOUT of mipi dphy pll is %luMHz\n",
>> + (dpll_out / MHZ));
>> +
>> + return dpll_out;
>> +}
>> +
>> +int s5p_mipi_dsi_set_clock(struct mipi_dsim_device *dsim,
>> + unsigned int byte_clk_sel, unsigned int enable)
>> +{
>> + unsigned int esc_div;
>> + unsigned long esc_clk_error_rate;
>> +
>> + if (enable) {
>> + dsim->e_clk_src = byte_clk_sel;
>> +
>> + /* Escape mode clock and byte clock source */
>> + s5p_mipi_dsi_set_byte_clock_src(dsim, byte_clk_sel);
>> +
>> + /* DPHY, DSIM Link : D-PHY clock out */
>> + if (byte_clk_sel == DSIM_PLL_OUT_DIV8) {
>> + dsim->hs_clk = s5p_mipi_dsi_change_pll(dsim,
>> + dsim->dsim_config->p, dsim->dsim_config->m,
>> + dsim->dsim_config->s);
>> + if (dsim->hs_clk == 0) {
>> + dev_err(dsim->dev,
>> + "failed to get hs clock.\n");
>> + return -EINVAL;
>> + }
>> +
>> + dsim->byte_clk = dsim->hs_clk / 8;
>> + s5p_mipi_dsi_enable_pll_bypass(dsim, 0);
>> + s5p_mipi_dsi_pll_on(dsim, 1);
>> + /* DPHY : D-PHY clock out, DSIM link : external clock out */
>> + } else if (byte_clk_sel == DSIM_EXT_CLK_DIV8)
>> + dev_warn(dsim->dev,
>> + "this project is not support \
>> + external clock source for MIPI DSIM\n");
>> + else if (byte_clk_sel == DSIM_EXT_CLK_BYPASS)
>> + dev_warn(dsim->dev,
>> + "this project is not support \
>> + external clock source for MIPI DSIM\n");
>> +
>> + /* escape clock divider */
>> + esc_div = dsim->byte_clk / (dsim->dsim_config->esc_clk);
>> + dev_dbg(dsim->dev,
>> + "esc_div = %d, byte_clk = %lu, esc_clk = %lu\n",
>> + esc_div, dsim->byte_clk,
> dsim->dsim_config->esc_clk);
>> + if ((dsim->byte_clk / esc_div) >= (20 * MHZ) ||
>> + (dsim->byte_clk / esc_div) >
>> + dsim->dsim_config->esc_clk)
>> + esc_div += 1;
>> +
>> + dsim->escape_clk = dsim->byte_clk / esc_div;
>> + dev_dbg(dsim->dev,
>> + "escape_clk = %lu, byte_clk = %lu, esc_div = %d\n",
>> + dsim->escape_clk, dsim->byte_clk, esc_div);
>> +
>> + /* enable escape clock. */
>> + s5p_mipi_dsi_enable_byte_clock(dsim, DSIM_ESCCLK_ON);
>> +
>> + /* enable byte clk and escape clock */
>> + s5p_mipi_dsi_set_esc_clk_prs(dsim, 1, esc_div);
>> + /* escape clock on lane */
>> + s5p_mipi_dsi_enable_esc_clk_on_lane(dsim,
>> + (DSIM_LANE_CLOCK | dsim->data_lane), 1);
>> +
>> + dev_dbg(dsim->dev, "byte clock is %luMHz\n",
>> + (dsim->byte_clk / MHZ));
>> + dev_dbg(dsim->dev, "escape clock that user's need is %lu\n",
>> + (dsim->dsim_config->esc_clk / MHZ));
>> + dev_dbg(dsim->dev, "escape clock divider is %x\n", esc_div);
>> + dev_dbg(dsim->dev, "escape clock is %luMHz\n",
>> + ((dsim->byte_clk / esc_div) / MHZ));
>> +
>> + if ((dsim->byte_clk / esc_div) > dsim->escape_clk) {
>> + esc_clk_error_rate = dsim->escape_clk /
>> + (dsim->byte_clk / esc_div);
>> + dev_warn(dsim->dev, "error rate is %lu over.\n",
>> + (esc_clk_error_rate / 100));
>> + } else if ((dsim->byte_clk / esc_div) < (dsim->escape_clk))
> {
>> + esc_clk_error_rate = (dsim->byte_clk / esc_div) /
>> + dsim->escape_clk;
>> + dev_warn(dsim->dev, "error rate is %lu under.\n",
>> + (esc_clk_error_rate / 100));
>> + }
>> + } else {
>> + s5p_mipi_dsi_enable_esc_clk_on_lane(dsim,
>> + (DSIM_LANE_CLOCK | dsim->data_lane), 0);
>> + s5p_mipi_dsi_set_esc_clk_prs(dsim, 0, 0);
>> +
>> + /* disable escape clock. */
>> + s5p_mipi_dsi_enable_byte_clock(dsim, DSIM_ESCCLK_OFF);
>> +
>> + if (byte_clk_sel == DSIM_PLL_OUT_DIV8)
>> + s5p_mipi_dsi_pll_on(dsim, 0);
>> + }
>> +
>> + return 0;
>> +}
>> +
>> +int s5p_mipi_dsi_init_dsim(struct mipi_dsim_device *dsim)
>> +{
>> + if (dsim->pd->init_d_phy)
>> + dsim->pd->init_d_phy(dsim);
>> +
>> + dsim->state = DSIM_STATE_INIT;
>> +
>> + switch (dsim->dsim_config->e_no_data_lane) {
>> + case DSIM_DATA_LANE_1:
>> + dsim->data_lane = DSIM_LANE_DATA0;
>> + break;
>> + case DSIM_DATA_LANE_2:
>> + dsim->data_lane = DSIM_LANE_DATA0 | DSIM_LANE_DATA1;
>> + break;
>> + case DSIM_DATA_LANE_3:
>> + dsim->data_lane = DSIM_LANE_DATA0 | DSIM_LANE_DATA1 |
>> + DSIM_LANE_DATA2;
>> + break;
>> + case DSIM_DATA_LANE_4:
>> + dsim->data_lane = DSIM_LANE_DATA0 | DSIM_LANE_DATA1 |
>> + DSIM_LANE_DATA2 | DSIM_LANE_DATA3;
>> + break;
>> + default:
>> + dev_info(dsim->dev, "data lane is invalid.\n");
>> + return -EINVAL;
>> + };
>> +
>> + s5p_mipi_dsi_sw_reset(dsim);
>> + s5p_mipi_dsi_dp_dn_swap(dsim, 0);
>> +
>> + return 0;
>> +}
>> +
>> +int s5p_mipi_dsi_enable_frame_done_int(struct mipi_dsim_device *dsim,
>> + unsigned int enable)
>> +{
>> + /* enable only frame done interrupt */
>> + s5p_mipi_dsi_set_interrupt_mask(dsim, INTMSK_FRAME_DONE, enable);
>> +
>> + return 0;
>> +}
>> +
>> +int s5p_mipi_dsi_set_display_mode(struct mipi_dsim_device *dsim,
>> + struct mipi_dsim_config *dsim_config)
>> +{
>> + struct fb_videomode *lcd_video = NULL;
>> + struct s3c_fb_pd_win *pd;
>> + unsigned int width = 0, height = 0;
>> +
>> + pd = (struct s3c_fb_pd_win *)dsim->dsim_config->lcd_panel_info;
>> + lcd_video = (struct fb_videomode *)&pd->win_mode;
>> +
>> + width = lcd_video->xres;
>> + height = lcd_video->yres;
>> +
>> + /* in case of VIDEO MODE (RGB INTERFACE) */
>> + if (dsim->dsim_config->e_interface == (u32) DSIM_VIDEO) {
>> + if (dsim->dsim_config->auto_vertical_cnt == 0) {
>> + s5p_mipi_dsi_set_main_disp_vporch(dsim,
>> + lcd_video->upper_margin,
>> + lcd_video->lower_margin, 0);
>> + s5p_mipi_dsi_set_main_disp_hporch(dsim,
>> + lcd_video->left_margin,
>> + lcd_video->right_margin);
>> + s5p_mipi_dsi_set_main_disp_sync_area(dsim,
>> + lcd_video->vsync_len,
>> + lcd_video->hsync_len);
>> + }
>> + }
>> +
>> + s5p_mipi_dsi_set_main_disp_resol(dsim, height, width);
>> +
>> + s5p_mipi_dsi_display_config(dsim, dsim->dsim_config);
>> +
>> + return 0;
>> +}
>> +
>> +int s5p_mipi_dsi_init_link(struct mipi_dsim_device *dsim)
>> +{
>> + unsigned int time_out = 100;
>> +
>> + switch (dsim->state) {
>> + case DSIM_STATE_INIT:
>> + s5p_mipi_dsi_sw_reset(dsim);
>> +
>> + s5p_mipi_dsi_init_fifo_pointer(dsim, 0x1f);
>> +
>> + /* dsi configuration */
>> + s5p_mipi_dsi_init_config(dsim);
>> + s5p_mipi_dsi_enable_lane(dsim, DSIM_LANE_CLOCK, 1);
>> + s5p_mipi_dsi_enable_lane(dsim, dsim->data_lane, 1);
>> +
>> + /* set clock configuration */
>> + s5p_mipi_dsi_set_clock(dsim, dsim->dsim_config->e_byte_clk,
> 1);
>> +
>> + /* check clock and data lane state are stop state */
>> + while (!(s5p_mipi_dsi_is_lane_state(dsim))) {
>> + time_out--;
>> + if (time_out == 0) {
>> + dev_err(dsim->dev,
>> + "DSI Master is not stop state.\n");
>> + dev_err(dsim->dev,
>> + "Check initialization process\n");
>> +
>> + return -EINVAL;
>> + }
>> + }
>> +
>> + if (time_out != 0) {
>> + dev_info(dsim->dev,
>> + "DSI Master driver has been completed.\n");
>> + dev_info(dsim->dev, "DSI Master state is stop
>> state\n");
>> + }
>> +
>> + dsim->state = DSIM_STATE_STOP;
>> +
>> + /* BTA sequence counters */
>> + s5p_mipi_dsi_set_stop_state_counter(dsim,
>> + dsim->dsim_config->stop_holding_cnt);
>> + s5p_mipi_dsi_set_bta_timeout(dsim,
>> + dsim->dsim_config->bta_timeout);
>> + s5p_mipi_dsi_set_lpdr_timeout(dsim,
>> + dsim->dsim_config->rx_timeout);
>> +
>> + return 0;
>> + default:
>> + dev_info(dsim->dev, "DSI Master is already init.\n");
>> + return 0;
>> + }
>> +
>> + return 0;
>> +}
>> +
>> +int s5p_mipi_dsi_set_hs_enable(struct mipi_dsim_device *dsim)
>> +{
>> + if (dsim->state == DSIM_STATE_STOP) {
>> + if (dsim->e_clk_src != DSIM_EXT_CLK_BYPASS) {
>> + dsim->state = DSIM_STATE_HSCLKEN;
>> +
>> + /* set LCDC and CPU transfer mode to HS. */
>> + s5p_mipi_dsi_set_lcdc_transfer_mode(dsim, 0);
>> + s5p_mipi_dsi_set_cpu_transfer_mode(dsim, 0);
>> +
>> + s5p_mipi_dsi_enable_hs_clock(dsim, 1);
>> +
>> + return 0;
>> + } else
>> + dev_warn(dsim->dev,
>> + "clock source is external bypass.\n");
>> + } else
>> + dev_warn(dsim->dev, "DSIM is not stop state.\n");
>> +
>> + return 0;
>> +}
>> +
>> +int s5p_mipi_dsi_set_data_transfer_mode(struct mipi_dsim_device *dsim,
>> + unsigned int mode)
>> +{
>> + if (mode) {
>> + if (dsim->state != DSIM_STATE_HSCLKEN) {
>> + dev_err(dsim->dev, "HS Clock lane is not
> enabled.\n");
>> + return -EINVAL;
>> + }
>> +
>> + s5p_mipi_dsi_set_lcdc_transfer_mode(dsim, 0);
>> + } else {
>> + if (dsim->state == DSIM_STATE_INIT || dsim->state ==
>> + DSIM_STATE_ULPS) {
>> + dev_err(dsim->dev,
>> + "DSI Master is not STOP or HSDT state.\n");
>> + return -EINVAL;
>> + }
>> +
>> + s5p_mipi_dsi_set_cpu_transfer_mode(dsim, 0);
>> + }
>> +
>> + return 0;
>> +}
>> +
>> +int s5p_mipi_dsi_get_frame_done_status(struct mipi_dsim_device *dsim)
>> +{
>> + return _s5p_mipi_dsi_get_frame_done_status(dsim);
>> +}
>> +
>> +int s5p_mipi_dsi_clear_frame_done(struct mipi_dsim_device *dsim)
>> +{
>> + _s5p_mipi_dsi_clear_frame_done(dsim);
>> +
>> + return 0;
>> +}
>> +
>> +MODULE_AUTHOR("InKi Dae <inki.dae at samsung.com>");
>> +MODULE_DESCRIPTION("Samusung MIPI-DSIM common driver");
>> +MODULE_LICENSE("GPL");
>> diff --git a/drivers/video/s5p_mipi_dsi_common.h
>> b/drivers/video/s5p_mipi_dsi_common.h
>> new file mode 100644
>> index 0000000..040d70e
>> --- /dev/null
>> +++ b/drivers/video/s5p_mipi_dsi_common.h
>> @@ -0,0 +1,38 @@
>> +/* linux/drivers/video/s5p_mipi_dsi_common.h
>> + *
>> + * Header file for Samsung MIPI-DSI common driver.
>> + *
>> + * Copyright (c) 2009 Samsung Electronics
>> + * InKi Dae <inki.dae at 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 _S5P_MIPI_DSI_COMMON_H
>> +#define _S5P_MIPI_DSI_COMMON_H
>> +
>> +int s5p_mipi_dsi_wr_data(struct mipi_dsim_device *dsim, unsigned int
> data_id,
>> + unsigned int data0, unsigned int data1);
>> +int s5p_mipi_dsi_pll_on(struct mipi_dsim_device *dsim, unsigned int
> enable);
>> +unsigned long s5p_mipi_dsi_change_pll(struct mipi_dsim_device *dsim,
>> + unsigned int pre_divider, unsigned int main_divider,
>> + unsigned int scaler);
>> +int s5p_mipi_dsi_set_clock(struct mipi_dsim_device *dsim,
>> + unsigned int byte_clk_sel, unsigned int enable);
>> +int s5p_mipi_dsi_init_dsim(struct mipi_dsim_device *dsim);
>> +int s5p_mipi_dsi_set_display_mode(struct mipi_dsim_device *dsim,
>> + struct mipi_dsim_config *dsim_info);
>> +int s5p_mipi_dsi_init_link(struct mipi_dsim_device *dsim);
>> +int s5p_mipi_dsi_set_hs_enable(struct mipi_dsim_device *dsim);
>> +int s5p_mipi_dsi_set_data_transfer_mode(struct mipi_dsim_device *dsim,
>> + unsigned int mode);
>> +int s5p_mipi_dsi_enable_frame_done_int(struct mipi_dsim_device *dsim,
>> + unsigned int enable);
>> +int s5p_mipi_dsi_get_frame_done_status(struct mipi_dsim_device *dsim);
>> +int s5p_mipi_dsi_clear_frame_done(struct mipi_dsim_device *dsim);
>> +
>> +extern struct fb_info *registered_fb[FB_MAX] __read_mostly;
>> +
>> +#endif /* _S5P_MIPI_DSI_COMMON_H */
>> diff --git a/drivers/video/s5p_mipi_dsi_lowlevel.c
>> b/drivers/video/s5p_mipi_dsi_lowlevel.c
>> new file mode 100644
>> index 0000000..8afea36
>> --- /dev/null
>> +++ b/drivers/video/s5p_mipi_dsi_lowlevel.c
>> @@ -0,0 +1,553 @@
>> +/* linux/drivers/video/s5p_mipi_dsi_lowlevel.c
>> + *
>> + * Samsung MIPI-DSI lowlevel driver.
>> + *
>> + * InKi Dae, <inki.dae at 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.
>> +*/
>> +
>> +#include <linux/module.h>
>> +#include <linux/kernel.h>
>> +#include <linux/errno.h>
>> +#include <linux/mutex.h>
>> +#include <linux/wait.h>
>> +#include <linux/delay.h>
>> +#include <linux/fs.h>
>> +#include <linux/mm.h>
>> +#include <linux/ctype.h>
>> +#include <linux/io.h>
>> +
>> +#include <mach/map.h>
>> +
>> +#include <plat/dsim.h>
>> +#include <plat/regs-dsim.h>
>> +
>> +void s5p_mipi_dsi_func_reset(struct mipi_dsim_device *dsim)
>> +{
>> + unsigned int reg;
>> +
>> + reg = readl(dsim->reg_base + S5P_DSIM_SWRST);
>> +
>> + reg |= DSIM_FUNCRST;
>> +
>> + writel(reg, dsim->reg_base + S5P_DSIM_SWRST);
>> +}
>> +
>> +void s5p_mipi_dsi_sw_reset(struct mipi_dsim_device *dsim)
>> +{
>> + unsigned int reg;
>> +
>> + reg = readl(dsim->reg_base + S5P_DSIM_SWRST);
>> +
>> + reg |= DSIM_SWRST;
>> +
>> + writel(reg, dsim->reg_base + S5P_DSIM_SWRST);
>> +}
>> +
>> +void s5p_mipi_dsi_set_interrupt_mask(struct mipi_dsim_device *dsim,
>> + unsigned int mode, unsigned int mask)
>> +{
>> + unsigned int reg = readl(dsim->reg_base + S5P_DSIM_INTMSK);
>> +
>> + if (mask)
>> + reg |= mode;
>> + else
>> + reg &= ~mode;
>> +
>> + writel(reg, dsim->reg_base + S5P_DSIM_INTMSK);
>> +}
>> +
>> +void s5p_mipi_dsi_init_fifo_pointer(struct mipi_dsim_device *dsim,
>> + unsigned int cfg)
>> +{
>> + unsigned int reg;
>> +
>> + reg = readl(dsim->reg_base + S5P_DSIM_FIFOCTRL);
>> +
>> + writel(reg & ~(cfg), dsim->reg_base + S5P_DSIM_FIFOCTRL);
>> + mdelay(10);
>> + reg |= cfg;
>> +
>> + writel(reg, dsim->reg_base + S5P_DSIM_FIFOCTRL);
>> +}
>> +
>> +/*
>> + * this function set PLL P, M and S value in D-PHY
>> + */
>> +void s5p_mipi_dsi_set_phy_tunning(struct mipi_dsim_device *dsim,
>> + unsigned int value)
>> +{
>> + writel(DSIM_AFC_CTL(value), dsim->reg_base + S5P_DSIM_PHYACCHR);
>> +}
>> +
>> +void s5p_mipi_dsi_set_main_disp_resol(struct mipi_dsim_device *dsim,
>> + unsigned int vert_resol, unsigned int hori_resol)
>> +{
>> + unsigned int reg;
>> +
>> + /* standby should be set after configuration so set to not ready*/
>> + reg = (readl(dsim->reg_base + S5P_DSIM_MDRESOL)) &
>> + ~(DSIM_MAIN_STAND_BY);
>> + writel(reg, dsim->reg_base + S5P_DSIM_MDRESOL);
>> +
>> + reg &= ~(0x7ff << 16) & ~(0x7ff << 0);
>> + reg |= DSIM_MAIN_VRESOL(vert_resol) | DSIM_MAIN_HRESOL(hori_resol);
>> +
>> + reg |= DSIM_MAIN_STAND_BY;
>> + writel(reg, dsim->reg_base + S5P_DSIM_MDRESOL);
>> +}
>> +
>> +void s5p_mipi_dsi_set_main_disp_vporch(struct mipi_dsim_device *dsim,
>> + unsigned int cmd_allow, unsigned int vfront, unsigned int vback)
>> +{
>> + unsigned int reg;
>> +
>> + reg = (readl(dsim->reg_base + S5P_DSIM_MVPORCH)) &
>> + ~(DSIM_CMD_ALLOW_MASK) & ~(DSIM_STABLE_VFP_MASK) &
>> + ~(DSIM_MAIN_VBP_MASK);
>> +
>> + reg |= ((cmd_allow & 0xf) << DSIM_CMD_ALLOW_SHIFT) |
>> + ((vfront & 0x7ff) << DSIM_STABLE_VFP_SHIFT) |
>> + ((vback & 0x7ff) << DSIM_MAIN_VBP_SHIFT);
>> +
>> + writel(reg, dsim->reg_base + S5P_DSIM_MVPORCH);
>> +}
>> +
>> +void s5p_mipi_dsi_set_main_disp_hporch(struct mipi_dsim_device *dsim,
>> + unsigned int front, unsigned int back)
>> +{
>> + unsigned int reg;
>> +
>> + reg = (readl(dsim->reg_base + S5P_DSIM_MHPORCH)) &
>> + ~(DSIM_MAIN_HFP_MASK) & ~(DSIM_MAIN_HBP_MASK);
>> +
>> + reg |= (front << DSIM_MAIN_HFP_SHIFT) | (back <<
> DSIM_MAIN_HBP_SHIFT);
>> +
>> + writel(reg, dsim->reg_base + S5P_DSIM_MHPORCH);
>> +}
>> +
>> +void s5p_mipi_dsi_set_main_disp_sync_area(struct mipi_dsim_device *dsim,
>> + unsigned int vert, unsigned int hori)
>> +{
>> + unsigned int reg;
>> +
>> + reg = (readl(dsim->reg_base + S5P_DSIM_MSYNC)) &
>> + ~(DSIM_MAIN_VSA_MASK) & ~(DSIM_MAIN_HSA_MASK);
>> +
>> + reg |= ((vert & 0x3ff) << DSIM_MAIN_VSA_SHIFT) |
>> + (hori << DSIM_MAIN_HSA_SHIFT);
>> +
>> + writel(reg, dsim->reg_base + S5P_DSIM_MSYNC);
>> +}
>> +
>> +void s5p_mipi_dsi_set_sub_disp_resol(struct mipi_dsim_device *dsim,
>> + unsigned int vert, unsigned int hori)
>> +{
>> + unsigned int reg;
>> +
>> + reg = (readl(dsim->reg_base + S5P_DSIM_SDRESOL)) &
>> + ~(DSIM_SUB_STANDY_MASK);
>> +
>> + writel(reg, dsim->reg_base + S5P_DSIM_SDRESOL);
>> +
>> + reg &= ~(DSIM_SUB_VRESOL_MASK) | ~(DSIM_SUB_HRESOL_MASK);
>> + reg |= ((vert & 0x7ff) << DSIM_SUB_VRESOL_SHIFT) |
>> + ((hori & 0x7ff) << DSIM_SUB_HRESOL_SHIFT);
>> + writel(reg, dsim->reg_base + S5P_DSIM_SDRESOL);
>> +
>> + reg |= (1 << DSIM_SUB_STANDY_SHIFT);
>> + writel(reg, dsim->reg_base + S5P_DSIM_SDRESOL);
>> +}
>> +
>> +void s5p_mipi_dsi_init_config(struct mipi_dsim_device *dsim)
>> +{
>> + struct mipi_dsim_config *dsim_config = dsim->dsim_config;
>> +
>> + unsigned int cfg = (readl(dsim->reg_base + S5P_DSIM_CONFIG)) &
>> + ~(1 << 28) & ~(0x1f << 20) & ~(0x3 << 5);
>> +
>> + cfg = (dsim_config->auto_flush << 29) |
>> + (dsim_config->eot_disable << 28) |
>> + (dsim_config->auto_vertical_cnt << DSIM_AUTO_MODE_SHIFT) |
>> + (dsim_config->hse << DSIM_HSE_MODE_SHIFT) |
>> + (dsim_config->hfp << DSIM_HFP_MODE_SHIFT) |
>> + (dsim_config->hbp << DSIM_HBP_MODE_SHIFT) |
>> + (dsim_config->hsa << DSIM_HSA_MODE_SHIFT) |
>> + (dsim_config->e_no_data_lane << DSIM_NUM_OF_DATALANE_SHIFT);
>> +
>> + writel(cfg, dsim->reg_base + S5P_DSIM_CONFIG);
>> +}
>> +
>> +void s5p_mipi_dsi_display_config(struct mipi_dsim_device *dsim,
>> + struct mipi_dsim_config *dsim_config)
>> +{
>> + u32 reg = (readl(dsim->reg_base + S5P_DSIM_CONFIG)) &
>> + ~(0x3 << 26) & ~(1 << 25) & ~(0x3 << 18) & ~(0x7 << 12) &
>> + ~(0x3 << 16) & ~(0x7 << 8);
>> +
>> + if (dsim_config->e_interface == DSIM_VIDEO)
>> + reg |= (1 << 25);
>> + else if (dsim_config->e_interface == DSIM_COMMAND)
>> + reg &= ~(1 << 25);
>> + else {
>> + dev_err(dsim->dev, "this ddi is not MIPI interface.\n");
>> + return;
>> + }
>> +
>> + /* main lcd */
>> + reg |= ((u8) (dsim_config->e_burst_mode) & 0x3) << 26 |
>> + ((u8) (dsim_config->e_virtual_ch) & 0x3) << 18 |
>> + ((u8) (dsim_config->e_pixel_format) & 0x7) << 12;
>> +
>> + writel(reg, dsim->reg_base + S5P_DSIM_CONFIG);
>> +}
>> +
>> +void s5p_mipi_dsi_enable_lane(struct mipi_dsim_device *dsim, unsigned int
>> lane,
>> + unsigned int enable)
>> +{
>> + unsigned int reg;
>> +
>> + reg = readl(dsim->reg_base + S5P_DSIM_CONFIG);
>> +
>> + if (enable)
>> + reg |= DSIM_LANE_ENx(lane);
>> + else
>> + reg &= ~DSIM_LANE_ENx(lane);
>> +
>> + writel(reg, dsim->reg_base + S5P_DSIM_CONFIG);
>> +}
>> +
>> +
>> +void s5p_mipi_dsi_set_data_lane_number(struct mipi_dsim_device *dsim,
>> + unsigned int count)
>> +{
>> + unsigned int cfg;
>> +
>> + /* get the data lane number. */
>> + cfg = DSIM_NUM_OF_DATA_LANE(count);
>> +
>> + writel(cfg, dsim->reg_base + S5P_DSIM_CONFIG);
>> +}
>> +
>> +void s5p_mipi_dsi_enable_afc(struct mipi_dsim_device *dsim, unsigned int
>> enable,
>> + unsigned int afc_code)
>> +{
>> + unsigned int reg = readl(dsim->reg_base + S5P_DSIM_PHYACCHR);
>> +
>> + if (enable) {
>> + reg |= (1 << 14);
>> + reg &= ~(0x7 << 5);
>> + reg |= (afc_code & 0x7) << 5;
>> + } else
>> + reg &= ~(1 << 14);
>> +
>> + writel(reg, dsim->reg_base + S5P_DSIM_PHYACCHR);
>> +}
>> +
>> +void s5p_mipi_dsi_enable_pll_bypass(struct mipi_dsim_device *dsim,
>> + unsigned int enable)
>> +{
>> + unsigned int reg = (readl(dsim->reg_base + S5P_DSIM_CLKCTRL)) &
>> + ~(DSIM_PLL_BYPASS_EXTERNAL);
>> +
>> + reg |= enable << DSIM_PLL_BYPASS_SHIFT;
>> +
>> + writel(reg, dsim->reg_base + S5P_DSIM_CLKCTRL);
>> +}
>> +
>> +void s5p_mipi_dsi_set_pll_pms(struct mipi_dsim_device *dsim, unsigned int
> p,
>> + unsigned int m, unsigned int s)
>> +{
>> + unsigned int reg = readl(dsim->reg_base + S5P_DSIM_PLLCTRL);
>> +
>> + reg |= ((p & 0x3f) << 13) | ((m & 0x1ff) << 4) | ((s & 0x7) << 1);
>> +
>> + writel(reg, dsim->reg_base + S5P_DSIM_PLLCTRL);
>> +}
>> +
>> +void s5p_mipi_dsi_pll_freq_band(struct mipi_dsim_device *dsim,
>> + unsigned int freq_band)
>> +{
>> + unsigned int reg = (readl(dsim->reg_base + S5P_DSIM_PLLCTRL)) &
>> + ~(0x1f << DSIM_FREQ_BAND_SHIFT);
>> +
>> + reg |= ((freq_band & 0x1f) << DSIM_FREQ_BAND_SHIFT);
>> +
>> + writel(reg, dsim->reg_base + S5P_DSIM_PLLCTRL);
>> +}
>> +
>> +void s5p_mipi_dsi_pll_freq(struct mipi_dsim_device *dsim,
>> + unsigned int pre_divider, unsigned int main_divider,
>> + unsigned int scaler)
>> +{
>> + unsigned int reg = (readl(dsim->reg_base + S5P_DSIM_PLLCTRL)) &
>> + ~(0x7ffff << 1);
>> +
>> + reg |= (pre_divider & 0x3f) << 13 | (main_divider & 0x1ff) << 4 |
>> + (scaler & 0x7) << 1;
>> +
>> + writel(reg, dsim->reg_base + S5P_DSIM_PLLCTRL);
>> +}
>> +
>> +void s5p_mipi_dsi_pll_stable_time(struct mipi_dsim_device *dsim,
>> + unsigned int lock_time)
>> +{
>> + writel(lock_time, dsim->reg_base + S5P_DSIM_PLLTMR);
>> +}
>> +
>> +void s5p_mipi_dsi_enable_pll(struct mipi_dsim_device *dsim, unsigned int
>> enable)
>> +{
>> + unsigned int reg = (readl(dsim->reg_base + S5P_DSIM_PLLCTRL)) &
>> + ~(0x1 << DSIM_PLL_EN_SHIFT);
>> +
>> + reg |= ((enable & 0x1) << DSIM_PLL_EN_SHIFT);
>> +
>> + writel(reg, dsim->reg_base + S5P_DSIM_PLLCTRL);
>> +}
>> +
>> +void s5p_mipi_dsi_set_byte_clock_src(struct mipi_dsim_device *dsim,
>> + unsigned int src)
>> +{
>> + unsigned int reg = (readl(dsim->reg_base + S5P_DSIM_CLKCTRL)) &
>> + ~(0x3 << DSIM_BYTE_CLK_SRC_SHIFT);
>> +
>> + reg |= ((unsigned int) src) << DSIM_BYTE_CLK_SRC_SHIFT;
>> +
>> + writel(reg, dsim->reg_base + S5P_DSIM_CLKCTRL);
>> +}
>> +
>> +void s5p_mipi_dsi_enable_byte_clock(struct mipi_dsim_device *dsim,
>> + unsigned int enable)
>> +{
>> + unsigned int reg = (readl(dsim->reg_base + S5P_DSIM_CLKCTRL)) &
>> + ~(1 << DSIM_BYTE_CLKEN_SHIFT);
>> +
>> + reg |= enable << DSIM_BYTE_CLKEN_SHIFT;
>> +
>> + writel(reg, dsim->reg_base + S5P_DSIM_CLKCTRL);
>> +}
>> +
>> +void s5p_mipi_dsi_set_esc_clk_prs(struct mipi_dsim_device *dsim,
>> + unsigned int enable, unsigned int prs_val)
>> +{
>> + unsigned int reg = (readl(dsim->reg_base + S5P_DSIM_CLKCTRL)) &
>> + ~(1 << DSIM_ESC_CLKEN_SHIFT) & ~(0xffff);
>> +
>> + reg |= enable << DSIM_ESC_CLKEN_SHIFT;
>> + if (enable)
>> + reg |= prs_val;
>> +
>> + writel(reg, dsim->reg_base + S5P_DSIM_CLKCTRL);
>> +}
>> +
>> +void s5p_mipi_dsi_enable_esc_clk_on_lane(struct mipi_dsim_device *dsim,
>> + unsigned int lane_sel, unsigned int enable)
>> +{
>> + unsigned int reg = readl(dsim->reg_base + S5P_DSIM_CLKCTRL);
>> +
>> + if (enable)
>> + reg |= DSIM_LANE_ESC_CLKEN(lane_sel);
>> + else
>> +
>> + reg &= ~DSIM_LANE_ESC_CLKEN(lane_sel);
>> +
>> + writel(reg, dsim->reg_base + S5P_DSIM_CLKCTRL);
>> +}
>> +
>> +void s5p_mipi_dsi_force_dphy_stop_state(struct mipi_dsim_device *dsim,
>> + unsigned int enable)
>> +{
>> + unsigned int reg = (readl(dsim->reg_base + S5P_DSIM_ESCMODE)) &
>> + ~(0x1 << DSIM_FORCE_STOP_STATE_SHIFT);
>> +
>> + reg |= ((enable & 0x1) << DSIM_FORCE_STOP_STATE_SHIFT);
>> +
>> + writel(reg, dsim->reg_base + S5P_DSIM_ESCMODE);
>> +}
>> +
>> +unsigned int s5p_mipi_dsi_is_lane_state(struct mipi_dsim_device *dsim)
>> +{
>> + unsigned int reg = readl(dsim->reg_base + S5P_DSIM_STATUS);
>> +
>> + /**
>> + * check clock and data lane states.
>> + * if MIPI-DSI controller was enabled at bootloader then
>> + * TX_READY_HS_CLK is enabled otherwise STOP_STATE_CLK.
>> + * so it should be checked for two case.
>> + */
>> + if ((reg & DSIM_STOP_STATE_DAT(0xf)) &&
>> + ((reg & DSIM_STOP_STATE_CLK) ||
>> + (reg & DSIM_TX_READY_HS_CLK)))
>> + return 1;
>> + else
>> + return 0;
>> +
>> + return 0;
>> +}
>> +
>> +void s5p_mipi_dsi_set_stop_state_counter(struct mipi_dsim_device *dsim,
>> + unsigned int cnt_val)
>> +{
>> + unsigned int reg = (readl(dsim->reg_base + S5P_DSIM_ESCMODE)) &
>> + ~(0x7ff << DSIM_STOP_STATE_CNT_SHIFT);
>> +
>> + reg |= ((cnt_val & 0x7ff) << DSIM_STOP_STATE_CNT_SHIFT);
>> +
>> + writel(reg, dsim->reg_base + S5P_DSIM_ESCMODE);
>> +}
>> +
>> +void s5p_mipi_dsi_set_bta_timeout(struct mipi_dsim_device *dsim,
>> + unsigned int timeout)
>> +{
>> + unsigned int reg = (readl(dsim->reg_base + S5P_DSIM_TIMEOUT)) &
>> + ~(0xff << DSIM_BTA_TOUT_SHIFT);
>> +
>> + reg |= (timeout << DSIM_BTA_TOUT_SHIFT);
>> +
>> + writel(reg, dsim->reg_base + S5P_DSIM_TIMEOUT);
>> +}
>> +
>> +void s5p_mipi_dsi_set_lpdr_timeout(struct mipi_dsim_device *dsim,
>> + unsigned int timeout)
>> +{
>> + unsigned int reg = (readl(dsim->reg_base + S5P_DSIM_TIMEOUT)) &
>> + ~(0xffff << DSIM_LPDR_TOUT_SHIFT);
>> +
>> + reg |= (timeout << DSIM_LPDR_TOUT_SHIFT);
>> +
>> + writel(reg, dsim->reg_base + S5P_DSIM_TIMEOUT);
>> +}
>> +
>> +void s5p_mipi_dsi_set_cpu_transfer_mode(struct mipi_dsim_device *dsim,
>> + unsigned int lp)
>> +{
>> + unsigned int reg = readl(dsim->reg_base + S5P_DSIM_ESCMODE);
>> +
>> + reg &= ~DSIM_CMD_LPDT_LP;
>> +
>> + reg |= lp << DSIM_CMD_LPDT_SHIFT;
>> +
>> + writel(reg, dsim->reg_base + S5P_DSIM_ESCMODE);
>> +}
>> +
>> +void s5p_mipi_dsi_set_lcdc_transfer_mode(struct mipi_dsim_device *dsim,
>> + unsigned int lp)
>> +{
>> + unsigned int reg = readl(dsim->reg_base + S5P_DSIM_ESCMODE);
>> +
>> + reg &= ~DSIM_TX_LPDT_LP;
>> +
>> + reg |= lp << DSIM_TX_LPDT_SHIFT;
>> +
>> + writel(reg, dsim->reg_base + S5P_DSIM_ESCMODE);
>> +}
>> +
>> +void s5p_mipi_dsi_enable_hs_clock(struct mipi_dsim_device *dsim,
>> + unsigned int enable)
>> +{
>> + unsigned int reg = (readl(dsim->reg_base + S5P_DSIM_CLKCTRL)) &
>> + ~(1 << DSIM_TX_REQUEST_HSCLK_SHIFT);
>> +
>> + reg |= enable << DSIM_TX_REQUEST_HSCLK_SHIFT;
>> +
>> + writel(reg, dsim->reg_base + S5P_DSIM_CLKCTRL);
>> +}
>> +
>> +void s5p_mipi_dsi_dp_dn_swap(struct mipi_dsim_device *dsim,
>> + unsigned int swap_en)
>> +{
>> + unsigned int reg = readl(dsim->reg_base + S5P_DSIM_PHYACCHR1);
>> +
>> + reg &= ~(0x3 << 0);
>> + reg |= (swap_en & 0x3) << 0;
>> +
>> + writel(reg, dsim->reg_base + S5P_DSIM_PHYACCHR1);
>> +}
>> +
>> +void s5p_mipi_dsi_hs_zero_ctrl(struct mipi_dsim_device *dsim,
>> + unsigned int hs_zero)
>> +{
>> + unsigned int reg = (readl(dsim->reg_base + S5P_DSIM_PLLCTRL)) &
>> + ~(0xf << 28);
>> +
>> + reg |= ((hs_zero & 0xf) << 28);
>> +
>> + writel(reg, dsim->reg_base + S5P_DSIM_PLLCTRL);
>> +}
>> +
>> +void s5p_mipi_dsi_prep_ctrl(struct mipi_dsim_device *dsim, unsigned int
> prep)
>> +{
>> + unsigned int reg = (readl(dsim->reg_base + S5P_DSIM_PLLCTRL)) &
>> + ~(0x7 << 20);
>> +
>> + reg |= ((prep & 0x7) << 20);
>> +
>> + writel(reg, dsim->reg_base + S5P_DSIM_PLLCTRL);
>> +}
>> +
>> +void s5p_mipi_dsi_clear_interrupt(struct mipi_dsim_device *dsim)
>> +{
>> + unsigned int reg = readl(dsim->reg_base + S5P_DSIM_INTSRC);
>> +
>> + reg |= INTSRC_PLL_STABLE;
>> +
>> + writel(reg, dsim->reg_base + S5P_DSIM_INTSRC);
>> +}
>> +
>> +void s5p_mipi_dsi_clear_all_interrupt(struct mipi_dsim_device *dsim)
>> +{
>> + unsigned int reg = readl(dsim->reg_base + S5P_DSIM_INTSRC);
>> +
>> + reg |= 0xffffffff;
>> +
>> + writel(reg, dsim->reg_base + S5P_DSIM_INTSRC);
>> +}
>> +
>> +unsigned int s5p_mipi_dsi_is_pll_stable(struct mipi_dsim_device *dsim)
>> +{
>> + unsigned int reg;
>> +
>> + reg = readl(dsim->reg_base + S5P_DSIM_STATUS);
>> +
>> + return reg & (1 << 31) ? 1 : 0;
>> +}
>> +
>> +unsigned int s5p_mipi_dsi_get_fifo_state(struct mipi_dsim_device *dsim)
>> +{
>> + unsigned int ret;
>> +
>> + ret = readl(dsim->reg_base + S5P_DSIM_FIFOCTRL) & ~(0x1f);
>> +
>> + return ret;
>> +}
>> +
>> +void s5p_mipi_dsi_wr_tx_header(struct mipi_dsim_device *dsim,
>> + unsigned int di, unsigned int data0, unsigned int data1)
>> +{
>> + unsigned int reg = (data1 << 16) | (data0 << 8) | ((di & 0x3f) <<
> 0);
>> +
>> + writel(reg, dsim->reg_base + S5P_DSIM_PKTHDR);
>> +}
>> +
>> +unsigned int _s5p_mipi_dsi_get_frame_done_status(struct mipi_dsim_device
>> *dsim)
>> +{
>> + unsigned int reg = readl(dsim->reg_base + S5P_DSIM_INTSRC);
>> +
>> + return (reg & INTSRC_FRAME_DONE) ? 1 : 0;
>> +}
>> +
>> +void _s5p_mipi_dsi_clear_frame_done(struct mipi_dsim_device *dsim)
>> +{
>> + unsigned int reg = readl(dsim->reg_base + S5P_DSIM_INTSRC);
>> +
>> + writel(reg | INTSRC_FRAME_DONE, dsim->reg_base +
>> + S5P_DSIM_INTSRC);
>> +}
>> +
>> +void s5p_mipi_dsi_wr_tx_data(struct mipi_dsim_device *dsim,
>> + unsigned int tx_data)
>> +{
>> + writel(tx_data, dsim->reg_base + S5P_DSIM_PAYLOAD);
>> +}
>> diff --git a/drivers/video/s5p_mipi_dsi_lowlevel.h
>> b/drivers/video/s5p_mipi_dsi_lowlevel.h
>> new file mode 100644
>> index 0000000..ed3f91c
>> --- /dev/null
>> +++ b/drivers/video/s5p_mipi_dsi_lowlevel.h
>> @@ -0,0 +1,98 @@
>> +/* linux/drivers/video/s5p_mipi_dsi_lowlevel.h
>> + *
>> + * Header file for Samsung MIPI-DSI lowlevel driver.
>> + *
>> + * Copyright (c) 2009 Samsung Electronics
>> + * InKi Dae <inki.dae at 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 _S5P_MIPI_DSI_LOWLEVEL_H
>> +#define _S5P_MIPI_DSI_LOWLEVEL_H
>> +
>> +void s5p_mipi_dsi_func_reset(struct mipi_dsim_device *dsim);
>> +void s5p_mipi_dsi_sw_reset(struct mipi_dsim_device *dsim);
>> +void s5p_mipi_dsi_set_interrupt_mask(struct mipi_dsim_device *dsim,
>> + unsigned int mode, unsigned int mask);
>> +void s5p_mipi_dsi_set_data_lane_number(struct mipi_dsim_device *dsim,
>> + unsigned int count);
>> +void s5p_mipi_dsi_init_fifo_pointer(struct mipi_dsim_device *dsim,
>> + unsigned int cfg);
>> +void s5p_mipi_dsi_set_phy_tunning(struct mipi_dsim_device *dsim,
>> + unsigned int value);
>> +void s5p_mipi_dsi_set_phy_tunning(struct mipi_dsim_device *dsim,
>> + unsigned int value);
>> +void s5p_mipi_dsi_set_main_disp_resol(struct mipi_dsim_device *dsim,
>> + unsigned int vert_resol, unsigned int hori_resol);
>> +void s5p_mipi_dsi_set_main_disp_vporch(struct mipi_dsim_device *dsim,
>> + unsigned int cmd_allow, unsigned int vfront, unsigned int vback);
>> +void s5p_mipi_dsi_set_main_disp_hporch(struct mipi_dsim_device *dsim,
>> + unsigned int front, unsigned int back);
>> +void s5p_mipi_dsi_set_main_disp_sync_area(struct mipi_dsim_device *dsim,
>> + unsigned int vert, unsigned int hori);
>> +void s5p_mipi_dsi_set_sub_disp_resol(struct mipi_dsim_device *dsim,
>> + unsigned int vert, unsigned int hori);
>> +void s5p_mipi_dsi_init_config(struct mipi_dsim_device *dsim);
>> +void s5p_mipi_dsi_display_config(struct mipi_dsim_device *dsim,
>> + struct mipi_dsim_config *dsim_config);
>> +void s5p_mipi_dsi_set_data_lane_number(struct mipi_dsim_device *dsim,
>> + unsigned int count);
>> +void s5p_mipi_dsi_enable_lane(struct mipi_dsim_device *dsim, unsigned int
>> lane,
>> + unsigned int enable);
>> +void s5p_mipi_dsi_enable_afc(struct mipi_dsim_device *dsim, unsigned int
>> enable,
>> + unsigned int afc_code);
>> +void s5p_mipi_dsi_enable_pll_bypass(struct mipi_dsim_device *dsim,
>> + unsigned int enable);
>> +void s5p_mipi_dsi_set_pll_pms(struct mipi_dsim_device *dsim, unsigned int
> p,
>> + unsigned int m, unsigned int s);
>> +void s5p_mipi_dsi_pll_freq_band(struct mipi_dsim_device *dsim,
>> + unsigned int freq_band);
>> +void s5p_mipi_dsi_pll_freq(struct mipi_dsim_device *dsim,
>> + unsigned int pre_divider, unsigned int main_divider,
>> + unsigned int scaler);
>> +void s5p_mipi_dsi_pll_stable_time(struct mipi_dsim_device *dsim,
>> + unsigned int lock_time);
>> +void s5p_mipi_dsi_enable_pll(struct mipi_dsim_device *dsim,
>> + unsigned int enable);
>> +void s5p_mipi_dsi_set_byte_clock_src(struct mipi_dsim_device *dsim,
>> + unsigned int src);
>> +void s5p_mipi_dsi_enable_byte_clock(struct mipi_dsim_device *dsim,
>> + unsigned int enable);
>> +void s5p_mipi_dsi_set_esc_clk_prs(struct mipi_dsim_device *dsim,
>> + unsigned int enable, unsigned int prs_val);
>> +void s5p_mipi_dsi_enable_esc_clk_on_lane(struct mipi_dsim_device *dsim,
>> + unsigned int lane_sel, unsigned int enable);
>> +void s5p_mipi_dsi_force_dphy_stop_state(struct mipi_dsim_device *dsim,
>> + unsigned int enable);
>> +unsigned int s5p_mipi_dsi_is_lane_state(struct mipi_dsim_device *dsim);
>> +void s5p_mipi_dsi_set_stop_state_counter(struct mipi_dsim_device *dsim,
>> + unsigned int cnt_val);
>> +void s5p_mipi_dsi_set_bta_timeout(struct mipi_dsim_device *dsim,
>> + unsigned int timeout);
>> +void s5p_mipi_dsi_set_lpdr_timeout(struct mipi_dsim_device *dsim,
>> + unsigned int timeout);
>> +void s5p_mipi_dsi_set_lcdc_transfer_mode(struct mipi_dsim_device *dsim,
>> + unsigned int lp);
>> +void s5p_mipi_dsi_set_cpu_transfer_mode(struct mipi_dsim_device *dsim,
>> + unsigned int lp);
>> +void s5p_mipi_dsi_enable_hs_clock(struct mipi_dsim_device *dsim,
>> + unsigned int enable);
>> +void s5p_mipi_dsi_dp_dn_swap(struct mipi_dsim_device *dsim,
>> + unsigned int swap_en);
>> +void s5p_mipi_dsi_hs_zero_ctrl(struct mipi_dsim_device *dsim,
>> + unsigned int hs_zero);
>> +void s5p_mipi_dsi_prep_ctrl(struct mipi_dsim_device *dsim, unsigned int
>> prep);
>> +void s5p_mipi_dsi_clear_interrupt(struct mipi_dsim_device *dsim);
>> +void s5p_mipi_dsi_clear_all_interrupt(struct mipi_dsim_device *dsim);
>> +unsigned int s5p_mipi_dsi_is_pll_stable(struct mipi_dsim_device *dsim);
>> +unsigned int s5p_mipi_dsi_get_fifo_state(struct mipi_dsim_device *dsim);
>> +unsigned int _s5p_mipi_dsi_get_frame_done_status(struct mipi_dsim_device
>> *dsim);
>> +void _s5p_mipi_dsi_clear_frame_done(struct mipi_dsim_device *dsim);
>> +void s5p_mipi_dsi_wr_tx_header(struct mipi_dsim_device *dsim, unsigned
> int
>> di,
>> + unsigned int data0, unsigned int data1);
>> +void s5p_mipi_dsi_wr_tx_data(struct mipi_dsim_device *dsim,
>> + unsigned int tx_data);
>> +
>> +#endif /* _S5P_MIPI_DSI_LOWLEVEL_H */
>> --
>> 1.7.0.4
>
>
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