EXYNOS SoC platform has MIPI-DSI controller and MIPI-DSI based LCD Panel could be used with it. This patch supports MIPI-DSI driver based Samsung SoC chip.

LCD panel driver based MIPI-DSI should be registered to MIPI-DSI driver at board file and LCD panel driver specific function registered to mipi_dsim_ddi structure at lcd panel init function called system init. In the MIPI-DSI driver, find lcd panel driver by using registered lcd panel name, and then initialize lcd panel driver.

Signed-off-by: Donghwa Lee dh09.lee@samsung.com Signed-off-by: Kyungmin Park kyungmin.park@samsung.com Signed-off-by: Inki Dae inki.dae@samsung.com --- arch/arm/include/asm/arch-exynos/dsim.h | 181 +++++++ arch/arm/include/asm/arch-exynos/mipi_dsim.h | 400 +++++++++++++++ drivers/video/exynos_mipi_dsi.c | 257 ++++++++++ drivers/video/exynos_mipi_dsi_common.c | 645 +++++++++++++++++++++++++ drivers/video/exynos_mipi_dsi_common.h | 48 ++ drivers/video/exynos_mipi_dsi_lowlevel.c | 669 ++++++++++++++++++++++++++ drivers/video/exynos_mipi_dsi_lowlevel.h | 111 +++++ 7 files changed, 2311 insertions(+), 0 deletions(-) create mode 100644 arch/arm/include/asm/arch-exynos/dsim.h create mode 100644 arch/arm/include/asm/arch-exynos/mipi_dsim.h create mode 100644 drivers/video/exynos_mipi_dsi.c create mode 100644 drivers/video/exynos_mipi_dsi_common.c create mode 100644 drivers/video/exynos_mipi_dsi_common.h create mode 100644 drivers/video/exynos_mipi_dsi_lowlevel.c create mode 100644 drivers/video/exynos_mipi_dsi_lowlevel.h

diff --git a/arch/arm/include/asm/arch-exynos/dsim.h b/arch/arm/include/asm/arch-exynos/dsim.h new file mode 100644 index 0000000..e148aca --- /dev/null +++ b/arch/arm/include/asm/arch-exynos/dsim.h @@ -0,0 +1,181 @@ +/* + * Copyright (C) 2012 Samsung Electronics + * + * Author: InKi Dae inki.dae@samsung.com + * Author: 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 as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#ifndef __ASM_ARM_ARCH_DSIM_H_ +#define __ASM_ARM_ARCH_DSIM_H_ + +#ifndef __ASSEMBLY__ + +struct exynos_mipi_dsim { + unsigned int status; + unsigned int swrst; + unsigned int clkctrl; + unsigned int timeout; + unsigned int config; + unsigned int escmode; + unsigned int mdresol; + unsigned int mvporch; + unsigned int mhporch; + unsigned int msync; + unsigned int sdresol; + unsigned int intsrc; + unsigned int intmsk; + unsigned int pkthdr; + unsigned int payload; + unsigned int rxfifo; + unsigned int fifothld; + unsigned int fifoctrl; + unsigned int memacchr; + unsigned int pllctrl; + unsigned int plltmr; + unsigned int phyacchr; + unsigned int phyacchr1; +}; + +#endif /* __ASSEMBLY__ */ + +/* + * Bit Definitions + */ +/* 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) +#define DSIM_PLL_STABLE (1 << 31) + +/* DSIM_SWRST */ +#define DSIM_FUNCRST (1 << 16) +#define DSIM_SWRST (1 << 0) + +/* EXYNOS_DSIM_TIMEOUT */ +#define DSIM_LPDR_TOUT_SHIFT (0) +#define DSIM_BTA_TOUT_SHIFT (16) + +/* EXYNOS_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) + +/* EXYNOS_DSIM_CONFIG */ +#define DSIM_NUM_OF_DATALANE_SHIFT (5) +#define DSIM_SUBPIX_SHIFT (8) +#define DSIM_MAINPIX_SHIFT (12) +#define DSIM_SUBVC_SHIFT (16) +#define DSIM_MAINVC_SHIFT (18) +#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_VIDEO_MODE_SHIFT (25) +#define DSIM_BURST_MODE_SHIFT (26) +#define DSIM_EOT_PACKET_SHIFT (28) +#define DSIM_AUTO_FLUSH_SHIFT (29) +#define DSIM_LANE_ENx(x) (((x) & 0x1f) << 0) + +#define DSIM_NUM_OF_DATA_LANE(x) ((x) << DSIM_NUM_OF_DATALANE_SHIFT) + +/* EXYNOS_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) + +/* EXYNOS_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) + +/* EXYNOS_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) + +/* EXYNOS_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) + +/* EXYNOS_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) + +/* EXYNOS_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) + +/* EXYNOS_DSIM_INTSRC */ +#define INTSRC_FRAME_DONE (1 << 24) +#define INTSRC_PLL_STABLE (1 << 31) +#define INTSRC_SWRST_RELEASE (1 << 30) + +/* EXYNOS_DSIM_INTMSK */ +#define INTMSK_FRAME_DONE (1 << 24) + +/* EXYNOS_DSIM_FIFOCTRL */ +#define SFR_HEADER_EMPTY (1 << 22) + +/* EXYNOS_DSIM_PKTHDR */ +#define DSIM_PKTHDR_DI(x) (((x) & 0x3f) << 0) +#define DSIM_PKTHDR_DAT0(x) ((x) << 8) +#define DSIM_PKTHDR_DAT1(x) ((x) << 16) + +/* EXYNOS_DSIM_PHYACCHR */ +#define DSIM_AFC_CTL(x) (((x) & 0x7) << 5) +#define DSIM_AFC_CTL_SHIFT (5) +#define DSIM_AFC_EN (1 << 14) + +/* EXYNOS_DSIM_PHYACCHR1 */ +#define DSIM_DPDN_SWAP_DATA_SHIFT (0) + +/* EXYNOS_DSIM_PLLCTRL */ +#define DSIM_SCALER_SHIFT (1) +#define DSIM_MAIN_SHIFT (4) +#define DSIM_PREDIV_SHIFT (13) +#define DSIM_PRECTRL_SHIFT (20) +#define DSIM_PLL_EN_SHIFT (23) +#define DSIM_FREQ_BAND_SHIFT (24) +#define DSIM_ZEROCTRL_SHIFT (28) + +#endif diff --git a/arch/arm/include/asm/arch-exynos/mipi_dsim.h b/arch/arm/include/asm/arch-exynos/mipi_dsim.h new file mode 100644 index 0000000..4ae6830 --- /dev/null +++ b/arch/arm/include/asm/arch-exynos/mipi_dsim.h @@ -0,0 +1,400 @@ +/* + * Copyright (C) 2012 Samsung Electronics + * + * Author: InKi Dae inki.dae@samsung.com + * Author: 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 as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#ifndef _DSIM_H +#define _DSIM_H + +#include <linux/list.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_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 +}; + +/* MIPI DSI Processor-to-Peripheral transaction types */ +enum { + MIPI_DSI_V_SYNC_START = 0x01, + MIPI_DSI_V_SYNC_END = 0x11, + MIPI_DSI_H_SYNC_START = 0x21, + MIPI_DSI_H_SYNC_END = 0x31, + + MIPI_DSI_COLOR_MODE_OFF = 0x02, + MIPI_DSI_COLOR_MODE_ON = 0x12, + MIPI_DSI_SHUTDOWN_PERIPHERAL = 0x22, + MIPI_DSI_TURN_ON_PERIPHERAL = 0x32, + + MIPI_DSI_GENERIC_SHORT_WRITE_0_PARAM = 0x03, + MIPI_DSI_GENERIC_SHORT_WRITE_1_PARAM = 0x13, + MIPI_DSI_GENERIC_SHORT_WRITE_2_PARAM = 0x23, + + MIPI_DSI_GENERIC_READ_REQUEST_0_PARAM = 0x04, + MIPI_DSI_GENERIC_READ_REQUEST_1_PARAM = 0x14, + MIPI_DSI_GENERIC_READ_REQUEST_2_PARAM = 0x24, + + MIPI_DSI_DCS_SHORT_WRITE = 0x05, + MIPI_DSI_DCS_SHORT_WRITE_PARAM = 0x15, + + MIPI_DSI_DCS_READ = 0x06, + + MIPI_DSI_SET_MAXIMUM_RETURN_PACKET_SIZE = 0x37, + + MIPI_DSI_END_OF_TRANSMISSION = 0x08, + + MIPI_DSI_NULL_PACKET = 0x09, + MIPI_DSI_BLANKING_PACKET = 0x19, + MIPI_DSI_GENERIC_LONG_WRITE = 0x29, + MIPI_DSI_DCS_LONG_WRITE = 0x39, + + MIPI_DSI_LOOSELY_PACKED_PIXEL_STREAM_YCBCR20 = 0x0c, + MIPI_DSI_PACKED_PIXEL_STREAM_YCBCR24 = 0x1c, + MIPI_DSI_PACKED_PIXEL_STREAM_YCBCR16 = 0x2c, + + MIPI_DSI_PACKED_PIXEL_STREAM_30 = 0x0d, + MIPI_DSI_PACKED_PIXEL_STREAM_36 = 0x1d, + MIPI_DSI_PACKED_PIXEL_STREAM_YCBCR12 = 0x3d, + + MIPI_DSI_PACKED_PIXEL_STREAM_16 = 0x0e, + MIPI_DSI_PACKED_PIXEL_STREAM_18 = 0x1e, + MIPI_DSI_PIXEL_STREAM_3BYTE_18 = 0x2e, + MIPI_DSI_PACKED_PIXEL_STREAM_24 = 0x3e, +}; + +/* + * 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. + */ +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 | + * | 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. + * @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. + * @pd: pointer to MIPI-DSI driver platform data. + */ +struct mipi_dsim_device { + 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; + enum mipi_dsim_byte_clk_src e_clk_src; + + struct exynos_platform_mipi_dsim *pd; +}; + +/* + * struct exynos_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. + * @lcd_panel_info: pointer for lcd panel specific structure. + * this structure specifies width, height, timing and polarity and so on. + * @mipi_power: callback pointer for enabling or disabling mipi power. + * @phy_enable: pointer to a callback controlling D-PHY enable/reset + */ +struct exynos_platform_mipi_dsim { + char lcd_panel_name[PANEL_NAME_SIZE]; + + struct mipi_dsim_config *dsim_config; + void *lcd_panel_info; + + int (*lcd_power)(void); + int (*mipi_power)(void); + void (*phy_enable)(unsigned int enable, unsigned int dev_index); +}; +/* + * 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. + */ + +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 (*get_fb_frame_done)(void); + void (*trigger)(struct fb_info *info); +}; + +/* + * 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; + char *panel_id; + int panel_type; + int id; + int bus_id; + int 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; + + int (*mipi_panel_init)(struct mipi_dsim_device *dsim_dev); + void (*mipi_display_on)(struct mipi_dsim_device *dsim_dev); +}; + +int exynos_mipi_dsi_init(void); + +/* + * 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); + +/* + * register mipi_dsim_lcd_device to mipi-dsi master. + */ +int exynos_mipi_dsi_register_lcd_device(struct mipi_dsim_lcd_device + *lcd_dev); + +/* + * exynos_dsim_phy_enable - global MIPI-DSI receiver D-PHY control + * @pdev: MIPI-DSIM platform device + * @on: true to enable D-PHY and deassert its reset + * false to disable D-PHY + */ +int exynos_dsim_phy_enable(int on); + +void exynos_set_dsim_platform_data(struct exynos_platform_mipi_dsim *pd); + +/* panel driver init based on mipi dsi interface */ +void s6e8ax0_init(void); + +#endif /* _DSIM_H */ diff --git a/drivers/video/exynos_mipi_dsi.c b/drivers/video/exynos_mipi_dsi.c new file mode 100644 index 0000000..704f6a7 --- /dev/null +++ b/drivers/video/exynos_mipi_dsi.c @@ -0,0 +1,257 @@ +/* + * Copyright (C) 2012 Samsung Electronics + * + * Author: InKi Dae inki.dae@samsung.com + * Author: 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 as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <ubi_uboot.h> +#include <common.h> +#include <lcd.h> +#include <asm/errno.h> +#include <asm/arch/dsim.h> +#include <asm/arch/mipi_dsim.h> +#include <asm/arch/power.h> +#include <asm/arch/cpu.h> +#include <asm/arch/clk.h> +#include <linux/types.h> +#include <linux/list.h> + +#include "exynos_mipi_dsi_lowlevel.h" +#include "exynos_mipi_dsi_common.h" + +#define master_to_driver(a) (a->dsim_lcd_drv) +#define master_to_device(a) (a->dsim_lcd_dev) + +static struct exynos_platform_mipi_dsim *dsim_pd; + +struct mipi_dsim_ddi { + int bus_id; + struct list_head list; + struct mipi_dsim_lcd_device *dsim_lcd_dev; + struct mipi_dsim_lcd_driver *dsim_lcd_drv; +}; + +static LIST_HEAD(dsim_ddi_list); +static LIST_HEAD(dsim_lcd_dev_list); + +int exynos_mipi_dsi_register_lcd_device(struct mipi_dsim_lcd_device *lcd_dev) +{ + struct mipi_dsim_ddi *dsim_ddi; + + if (!lcd_dev) { + debug("mipi_dsim_lcd_device is NULL.\n"); + return -EFAULT; + } + + if (!lcd_dev->name) { + debug("dsim_lcd_device name is NULL.\n"); + return -EFAULT; + } + + dsim_ddi = kzalloc(sizeof(struct mipi_dsim_ddi), GFP_KERNEL); + if (!dsim_ddi) { + debug("failed to allocate dsim_ddi object.\n"); + return -EFAULT; + } + + dsim_ddi->dsim_lcd_dev = lcd_dev; + + list_add_tail(&dsim_ddi->list, &dsim_ddi_list); + + return 0; +} + +struct mipi_dsim_ddi + *exynos_mipi_dsi_find_lcd_device(struct mipi_dsim_lcd_driver *lcd_drv) +{ + struct mipi_dsim_ddi *dsim_ddi; + struct mipi_dsim_lcd_device *lcd_dev; + + list_for_each_entry(dsim_ddi, &dsim_ddi_list, list) { + lcd_dev = dsim_ddi->dsim_lcd_dev; + if (!lcd_dev) + continue; + + if (lcd_drv->id >= 0) { + if ((strcmp(lcd_drv->name, lcd_dev->name)) == 0 && + lcd_drv->id == lcd_dev->id) { + /** + * bus_id would be used to identify + * connected bus. + */ + dsim_ddi->bus_id = lcd_dev->bus_id; + + return dsim_ddi; + } + } else { + if ((strcmp(lcd_drv->name, lcd_dev->name)) == 0) { + /** + * bus_id would be used to identify + * connected bus. + */ + dsim_ddi->bus_id = lcd_dev->bus_id; + + return dsim_ddi; + } + } + + kfree(dsim_ddi); + list_del(&dsim_ddi_list); + } + + return NULL; +} + +int exynos_mipi_dsi_register_lcd_driver(struct mipi_dsim_lcd_driver *lcd_drv) +{ + struct mipi_dsim_ddi *dsim_ddi; + + if (!lcd_drv) { + debug("mipi_dsim_lcd_driver is NULL.\n"); + return -EFAULT; + } + + if (!lcd_drv->name) { + debug("dsim_lcd_driver name is NULL.\n"); + return -EFAULT; + } + + dsim_ddi = exynos_mipi_dsi_find_lcd_device(lcd_drv); + if (!dsim_ddi) { + debug("mipi_dsim_ddi object not found.\n"); + return -EFAULT; + } + + dsim_ddi->dsim_lcd_drv = lcd_drv; + + debug("registered panel driver(%s) to mipi-dsi driver.\n", + lcd_drv->name); + + return 0; + +} + +struct mipi_dsim_ddi + *exynos_mipi_dsi_bind_lcd_ddi(struct mipi_dsim_device *dsim, + const char *name) +{ + struct mipi_dsim_ddi *dsim_ddi; + struct mipi_dsim_lcd_driver *lcd_drv; + struct mipi_dsim_lcd_device *lcd_dev; + + list_for_each_entry(dsim_ddi, &dsim_ddi_list, list) { + lcd_drv = dsim_ddi->dsim_lcd_drv; + lcd_dev = dsim_ddi->dsim_lcd_dev; + if (!lcd_drv || !lcd_dev) + continue; + + debug("lcd_drv->id = %d, lcd_dev->id = %d\n", + lcd_drv->id, lcd_dev->id); + + if ((strcmp(lcd_drv->name, name) == 0)) { + lcd_dev->master = dsim; + + dsim->dsim_lcd_dev = lcd_dev; + dsim->dsim_lcd_drv = lcd_drv; + + return dsim_ddi; + } + } + + return NULL; +} + +/* define MIPI-DSI Master operations. */ +static struct mipi_dsim_master_ops master_ops = { + .cmd_write = exynos_mipi_dsi_wr_data, + .get_dsim_frame_done = exynos_mipi_dsi_get_frame_done_status, + .clear_dsim_frame_done = exynos_mipi_dsi_clear_frame_done, +}; + +int exynos_mipi_dsi_init(void) +{ + struct mipi_dsim_device *dsim; + struct mipi_dsim_config *dsim_config; + struct mipi_dsim_ddi *dsim_ddi; + + dsim = kzalloc(sizeof(struct mipi_dsim_device), GFP_KERNEL); + if (!dsim) { + debug("failed to allocate dsim object.\n"); + return -EFAULT; + } + + /* get mipi_dsim_config. */ + dsim_config = dsim_pd->dsim_config; + if (dsim_config == NULL) { + debug("failed to get dsim config data.\n"); + return -EFAULT; + } + + dsim->pd = dsim_pd; + dsim->dsim_config = dsim_config; + dsim->master_ops = &master_ops; + + + /* bind lcd ddi matched with panel name. */ + dsim_ddi = exynos_mipi_dsi_bind_lcd_ddi(dsim, dsim_pd->lcd_panel_name); + if (!dsim_ddi) { + debug("mipi_dsim_ddi object not found.\n"); + return -ENOSYS; + } + if (dsim_pd->lcd_power) + dsim_pd->lcd_power(); + + if (dsim_pd->mipi_power) + dsim_pd->mipi_power(); + + /* phy_enable(unsigned int enable, unsigned int dev_index) */ + if (dsim_pd->phy_enable) + dsim_pd->phy_enable(1, 0); + + set_mipi_clk(); + + exynos_mipi_dsi_init_dsim(dsim); + exynos_mipi_dsi_init_link(dsim); + exynos_mipi_dsi_set_hs_enable(dsim); + + /* set display timing. */ + exynos_mipi_dsi_set_display_mode(dsim, dsim->dsim_config); + + /* initialize mipi-dsi client(lcd panel). */ + if (dsim_ddi->dsim_lcd_drv && dsim_ddi->dsim_lcd_drv->mipi_panel_init) { + dsim_ddi->dsim_lcd_drv->mipi_panel_init(dsim); + dsim_ddi->dsim_lcd_drv->mipi_display_on(dsim); + } + + debug("mipi-dsi driver(%s mode) has been probed.\n", + (dsim_config->e_interface == DSIM_COMMAND) ? + "CPU" : "RGB"); + + return 0; +} + +void exynos_set_dsim_platform_data(struct exynos_platform_mipi_dsim *pd) +{ + if (pd == NULL) { + debug("pd is NULL\n"); + return; + } + + dsim_pd = pd; +} diff --git a/drivers/video/exynos_mipi_dsi_common.c b/drivers/video/exynos_mipi_dsi_common.c new file mode 100644 index 0000000..08611b6 --- /dev/null +++ b/drivers/video/exynos_mipi_dsi_common.c @@ -0,0 +1,645 @@ +/* + * Copyright (C) 2012 Samsung Electronics + * + * Author: InKi Dae inki.dae@samsung.com + * Author: 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 as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <lcd.h> +#include <asm/errno.h> +#include <asm/arch/dsim.h> +#include <asm/arch/mipi_dsim.h> +#include <linux/types.h> +#include <linux/fb.h> + +#include "exynos_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) + +/* 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 exynos_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; + debug("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; + debug("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); + } + + exynos_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; + + debug("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))); + + exynos_mipi_dsi_wr_tx_data(dsim, payload); + } + } +} + +int exynos_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, delay; + unsigned int check_rx_ack = 0; + + if (dsim->state == DSIM_STATE_ULPS) { + debug("state is ULPS.\n"); + + return -EINVAL; + } + + delay_val = MHZ / dsim->dsim_config->esc_clk; + delay = 10 * delay_val; + + udelay(delay * 1000); + + /* only if transfer mode is LPDT, wait SFR becomes empty. */ + if (dsim->state == DSIM_STATE_STOP) { + while (!(exynos_mipi_dsi_get_fifo_state(dsim) & + SFR_HEADER_EMPTY)) { + if ((timeout--) > 0) + udelay(1000); + else { + debug("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: + debug("data0 = %x data1 = %x\n", + data0, data1); + exynos_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: + exynos_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: + exynos_mipi_dsi_clear_all_interrupt(dsim); + exynos_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; + + exynos_mipi_dsi_wr_tx_data(dsim, payload); + + debug("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 + exynos_mipi_dsi_long_data_wr(dsim, data0, data1); + + /* put data into header fifo */ + exynos_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: + debug("data id %x is not supported current DSI spec.\n", + data_id); + + return -EINVAL; + } + + return 0; +} + +int exynos_mipi_dsi_pll_on(struct mipi_dsim_device *dsim, unsigned int enable) +{ + int sw_timeout; + + if (enable) { + sw_timeout = 1000; + + exynos_mipi_dsi_clear_interrupt(dsim); + exynos_mipi_dsi_enable_pll(dsim, 1); + while (1) { + sw_timeout--; + if (exynos_mipi_dsi_is_pll_stable(dsim)) + return 0; + if (sw_timeout == 0) + return -EINVAL; + } + } else + exynos_mipi_dsi_enable_pll(dsim, 0); + + return 0; +} + +unsigned long exynos_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); + + /****************************************************** + * 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 + ******************************************************/ + if (dfin_pll < DFIN_PLL_MIN_HZ || dfin_pll > DFIN_PLL_MAX_HZ) { + debug("fin_pll range should be 6MHz ~ 12MHz\n"); + exynos_mipi_dsi_enable_afc(dsim, 0, 0); + } else { + if (dfin_pll < 7 * MHZ) + exynos_mipi_dsi_enable_afc(dsim, 1, 0x1); + else if (dfin_pll < 8 * MHZ) + exynos_mipi_dsi_enable_afc(dsim, 1, 0x0); + else if (dfin_pll < 9 * MHZ) + exynos_mipi_dsi_enable_afc(dsim, 1, 0x3); + else if (dfin_pll < 10 * MHZ) + exynos_mipi_dsi_enable_afc(dsim, 1, 0x2); + else if (dfin_pll < 11 * MHZ) + exynos_mipi_dsi_enable_afc(dsim, 1, 0x5); + else + exynos_mipi_dsi_enable_afc(dsim, 1, 0x4); + } + + dfvco = dfin_pll * main_divider; + debug("dfvco = %lu, dfin_pll = %lu, main_divider = %d\n", + dfvco, dfin_pll, main_divider); + if (dfvco < DFVCO_MIN_HZ || dfvco > DFVCO_MAX_HZ) + debug("fvco range should be 500MHz ~ 1000MHz\n"); + + dpll_out = dfvco / (1 << scaler); + debug("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; + } + } + + debug("freq_band = %d\n", freq_band); + + exynos_mipi_dsi_pll_freq(dsim, pre_divider, main_divider, scaler); + + exynos_mipi_dsi_hs_zero_ctrl(dsim, 0); + exynos_mipi_dsi_prep_ctrl(dsim, 0); + + /* Freq Band */ + exynos_mipi_dsi_pll_freq_band(dsim, freq_band); + + /* Stable time */ + exynos_mipi_dsi_pll_stable_time(dsim, + dsim->dsim_config->pll_stable_time); + + /* Enable PLL */ + debug("FOUT of mipi dphy pll is %luMHz\n", + (dpll_out / MHZ)); + + return dpll_out; +} + +int exynos_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; + unsigned long hs_clk = 0, byte_clk = 0, escape_clk = 0; + + if (enable) { + dsim->e_clk_src = byte_clk_sel; + + /* Escape mode clock and byte clock source */ + exynos_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) { + hs_clk = exynos_mipi_dsi_change_pll(dsim, + dsim->dsim_config->p, dsim->dsim_config->m, + dsim->dsim_config->s); + if (hs_clk == 0) { + debug("failed to get hs clock.\n"); + return -EINVAL; + } + + byte_clk = hs_clk / 8; + exynos_mipi_dsi_enable_pll_bypass(dsim, 0); + exynos_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) + debug("not support EXT CLK source for MIPI DSIM\n"); + else if (byte_clk_sel == DSIM_EXT_CLK_BYPASS) + debug("not support EXT CLK source for MIPI DSIM\n"); + + /* escape clock divider */ + esc_div = byte_clk / (dsim->dsim_config->esc_clk); + debug("esc_div = %d, byte_clk = %lu, esc_clk = %lu\n", + esc_div, byte_clk, dsim->dsim_config->esc_clk); + if ((byte_clk / esc_div) >= (20 * MHZ) || + (byte_clk / esc_div) > + dsim->dsim_config->esc_clk) + esc_div += 1; + + escape_clk = byte_clk / esc_div; + debug("escape_clk = %lu, byte_clk = %lu, esc_div = %d\n", + escape_clk, byte_clk, esc_div); + + /* enable escape clock. */ + exynos_mipi_dsi_enable_byte_clock(dsim, 1); + + /* enable byte clk and escape clock */ + exynos_mipi_dsi_set_esc_clk_prs(dsim, 1, esc_div); + /* escape clock on lane */ + exynos_mipi_dsi_enable_esc_clk_on_lane(dsim, + (DSIM_LANE_CLOCK | dsim->data_lane), 1); + + debug("byte clock is %luMHz\n", + (byte_clk / MHZ)); + debug("escape clock that user's need is %lu\n", + (dsim->dsim_config->esc_clk / MHZ)); + debug("escape clock divider is %x\n", esc_div); + debug("escape clock is %luMHz\n", + ((byte_clk / esc_div) / MHZ)); + + if ((byte_clk / esc_div) > escape_clk) { + esc_clk_error_rate = escape_clk / + (byte_clk / esc_div); + debug("error rate is %lu over.\n", + (esc_clk_error_rate / 100)); + } else if ((byte_clk / esc_div) < (escape_clk)) { + esc_clk_error_rate = (byte_clk / esc_div) / + escape_clk; + debug("error rate is %lu under.\n", + (esc_clk_error_rate / 100)); + } + } else { + exynos_mipi_dsi_enable_esc_clk_on_lane(dsim, + (DSIM_LANE_CLOCK | dsim->data_lane), 0); + exynos_mipi_dsi_set_esc_clk_prs(dsim, 0, 0); + + /* disable escape clock. */ + exynos_mipi_dsi_enable_byte_clock(dsim, 0); + + if (byte_clk_sel == DSIM_PLL_OUT_DIV8) + exynos_mipi_dsi_pll_on(dsim, 0); + } + + return 0; +} + +int exynos_mipi_dsi_init_dsim(struct mipi_dsim_device *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: + debug("data lane is invalid.\n"); + return -EINVAL; + }; + + exynos_mipi_dsi_sw_reset(dsim); + exynos_mipi_dsi_dp_dn_swap(dsim, 0); + + return 0; +} + +int exynos_mipi_dsi_enable_frame_done_int(struct mipi_dsim_device *dsim, + unsigned int enable) +{ + /* enable only frame done interrupt */ + exynos_mipi_dsi_set_interrupt_mask(dsim, INTMSK_FRAME_DONE, enable); + + return 0; +} + +static void convert_to_fb_videomode(struct fb_videomode *mode1, + vidinfo_t *mode2) +{ + mode1->xres = mode2->vl_width; + mode1->yres = mode2->vl_height; + mode1->upper_margin = mode2->vl_vfpd; + mode1->lower_margin = mode2->vl_vbpd; + mode1->left_margin = mode2->vl_hfpd; + mode1->right_margin = mode2->vl_hbpd; + mode1->vsync_len = mode2->vl_vspw; + mode1->hsync_len = mode2->vl_hspw; +} + +int exynos_mipi_dsi_set_display_mode(struct mipi_dsim_device *dsim, + struct mipi_dsim_config *dsim_config) +{ + struct exynos_platform_mipi_dsim *dsim_pd; + struct fb_videomode lcd_video; + vidinfo_t *vid; + + dsim_pd = (struct exynos_platform_mipi_dsim *)dsim->pd; + vid = (vidinfo_t *)dsim_pd->lcd_panel_info; + + convert_to_fb_videomode(&lcd_video, vid); + + /* in case of VIDEO MODE (RGB INTERFACE), it sets polarities. */ + if (dsim->dsim_config->e_interface == (u32) DSIM_VIDEO) { + if (dsim->dsim_config->auto_vertical_cnt == 0) { + exynos_mipi_dsi_set_main_disp_vporch(dsim, + vid->vl_cmd_allow_len, + lcd_video.upper_margin, + lcd_video.lower_margin); + exynos_mipi_dsi_set_main_disp_hporch(dsim, + lcd_video.left_margin, + lcd_video.right_margin); + exynos_mipi_dsi_set_main_disp_sync_area(dsim, + lcd_video.vsync_len, + lcd_video.hsync_len); + } + } + + exynos_mipi_dsi_set_main_disp_resol(dsim, lcd_video.xres, + lcd_video.yres); + + exynos_mipi_dsi_display_config(dsim, dsim->dsim_config); + + debug("lcd panel ==> width = %d, height = %d\n", + lcd_video.xres, lcd_video.yres); + + return 0; +} + +int exynos_mipi_dsi_init_link(struct mipi_dsim_device *dsim) +{ + unsigned int time_out = 100; + + switch (dsim->state) { + case DSIM_STATE_INIT: + exynos_mipi_dsi_init_fifo_pointer(dsim, 0x1f); + + /* dsi configuration */ + exynos_mipi_dsi_init_config(dsim); + exynos_mipi_dsi_enable_lane(dsim, DSIM_LANE_CLOCK, 1); + exynos_mipi_dsi_enable_lane(dsim, dsim->data_lane, 1); + + /* set clock configuration */ + exynos_mipi_dsi_set_clock(dsim, + dsim->dsim_config->e_byte_clk, 1); + + /* check clock and data lane state are stop state */ + while (!(exynos_mipi_dsi_is_lane_state(dsim))) { + time_out--; + if (time_out == 0) { + debug("DSI Master is not stop state.\n"); + debug("Check initialization process\n"); + + return -EINVAL; + } + } + + if (time_out != 0) { + debug("DSI Master driver has been completed.\n"); + debug("DSI Master state is stop state\n"); + } + + dsim->state = DSIM_STATE_STOP; + + /* BTA sequence counters */ + exynos_mipi_dsi_set_stop_state_counter(dsim, + dsim->dsim_config->stop_holding_cnt); + exynos_mipi_dsi_set_bta_timeout(dsim, + dsim->dsim_config->bta_timeout); + exynos_mipi_dsi_set_lpdr_timeout(dsim, + dsim->dsim_config->rx_timeout); + + + return 0; + default: + debug("DSI Master is already init.\n"); + return 0; + } + + return 0; +} + +int exynos_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. */ + exynos_mipi_dsi_set_lcdc_transfer_mode(dsim, 0); + exynos_mipi_dsi_set_cpu_transfer_mode(dsim, 0); + + exynos_mipi_dsi_enable_hs_clock(dsim, 1); + + return 0; + } else + debug("clock source is external bypass.\n"); + } else + debug("DSIM is not stop state.\n"); + + return 0; +} + +int exynos_mipi_dsi_set_data_transfer_mode(struct mipi_dsim_device *dsim, + unsigned int mode) +{ + if (mode) { + if (dsim->state != DSIM_STATE_HSCLKEN) { + debug("HS Clock lane is not enabled.\n"); + return -EINVAL; + } + + exynos_mipi_dsi_set_lcdc_transfer_mode(dsim, 0); + } else { + if (dsim->state == DSIM_STATE_INIT || dsim->state == + DSIM_STATE_ULPS) { + debug("DSI Master is not STOP or HSDT state.\n"); + return -EINVAL; + } + + exynos_mipi_dsi_set_cpu_transfer_mode(dsim, 0); + } + + return 0; +} + +int exynos_mipi_dsi_get_frame_done_status(struct mipi_dsim_device *dsim) +{ + return _exynos_mipi_dsi_get_frame_done_status(dsim); +} + +int exynos_mipi_dsi_clear_frame_done(struct mipi_dsim_device *dsim) +{ + _exynos_mipi_dsi_clear_frame_done(dsim); + + return 0; +} diff --git a/drivers/video/exynos_mipi_dsi_common.h b/drivers/video/exynos_mipi_dsi_common.h new file mode 100644 index 0000000..4d80679 --- /dev/null +++ b/drivers/video/exynos_mipi_dsi_common.h @@ -0,0 +1,48 @@ +/* + * Copyright (C) 2012 Samsung Electronics + * + * Author: InKi Dae inki.dae@samsung.com + * Author: 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 as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <linux/fb.h> + +#ifndef _EXYNOS_MIPI_DSI_COMMON_H +#define _EXYNOS_MIPI_DSI_COMMON_H + +int exynos_mipi_dsi_wr_data(struct mipi_dsim_device *dsim, unsigned int data_id, + unsigned int data0, unsigned int data1); +int exynos_mipi_dsi_pll_on(struct mipi_dsim_device *dsim, unsigned int enable); +unsigned long exynos_mipi_dsi_change_pll(struct mipi_dsim_device *dsim, + unsigned int pre_divider, unsigned int main_divider, + unsigned int scaler); +int exynos_mipi_dsi_set_clock(struct mipi_dsim_device *dsim, + unsigned int byte_clk_sel, unsigned int enable); +int exynos_mipi_dsi_init_dsim(struct mipi_dsim_device *dsim); +int exynos_mipi_dsi_set_display_mode(struct mipi_dsim_device *dsim, + struct mipi_dsim_config *dsim_info); +int exynos_mipi_dsi_init_link(struct mipi_dsim_device *dsim); +int exynos_mipi_dsi_set_hs_enable(struct mipi_dsim_device *dsim); +int exynos_mipi_dsi_set_data_transfer_mode(struct mipi_dsim_device *dsim, + unsigned int mode); +int exynos_mipi_dsi_enable_frame_done_int(struct mipi_dsim_device *dsim, + unsigned int enable); +int exynos_mipi_dsi_get_frame_done_status(struct mipi_dsim_device *dsim); +int exynos_mipi_dsi_clear_frame_done(struct mipi_dsim_device *dsim); + +#endif /* _EXYNOS_MIPI_DSI_COMMON_H */ diff --git a/drivers/video/exynos_mipi_dsi_lowlevel.c b/drivers/video/exynos_mipi_dsi_lowlevel.c new file mode 100644 index 0000000..cc52ede --- /dev/null +++ b/drivers/video/exynos_mipi_dsi_lowlevel.c @@ -0,0 +1,669 @@ +/* + * Copyright (C) 2012 Samsung Electronics + * + * Author: InKi Dae inki.dae@samsung.com + * Author: 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 as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <lcd.h> +#include <asm/errno.h> +#include <asm/arch/dsim.h> +#include <asm/arch/mipi_dsim.h> +#include <asm/arch/power.h> +#include <asm/arch/cpu.h> +#include <linux/types.h> +#include <linux/list.h> + +#include <asm/arch/mipi_dsim.h> + +#include "exynos_mipi_dsi_lowlevel.h" +#include "exynos_mipi_dsi_common.h" + +void exynos_mipi_dsi_func_reset(struct mipi_dsim_device *dsim) +{ + unsigned int reg; + + struct exynos_mipi_dsim *mipi_dsim = + (struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim(); + + reg = readl(&mipi_dsim->swrst); + + reg |= DSIM_FUNCRST; + + writel(reg, &mipi_dsim->swrst); +} + +void exynos_mipi_dsi_sw_reset(struct mipi_dsim_device *dsim) +{ + unsigned int reg = 0; + + struct exynos_mipi_dsim *mipi_dsim = + (struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim(); + + reg = readl(&mipi_dsim->swrst); + + reg |= DSIM_SWRST; + reg |= DSIM_FUNCRST; + + writel(reg, &mipi_dsim->swrst); +} + +void exynos_mipi_dsi_sw_release(struct mipi_dsim_device *dsim) +{ + struct exynos_mipi_dsim *mipi_dsim = + (struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim(); + unsigned int reg = readl(&mipi_dsim->intsrc); + + reg |= INTSRC_SWRST_RELEASE; + + writel(reg, &mipi_dsim->intsrc); + + reg = 0; + reg = readl(&mipi_dsim->intsrc); +} + +void exynos_mipi_dsi_set_interrupt_mask(struct mipi_dsim_device *dsim, + unsigned int mode, unsigned int mask) +{ + struct exynos_mipi_dsim *mipi_dsim = + (struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim(); + unsigned int reg = readl(&mipi_dsim->intmsk); + + if (mask) + reg |= mode; + else + reg &= ~mode; + + writel(reg, &mipi_dsim->intmsk); +} + +void exynos_mipi_dsi_init_fifo_pointer(struct mipi_dsim_device *dsim, + unsigned int cfg) +{ + unsigned int reg; + struct exynos_mipi_dsim *mipi_dsim = + (struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim(); + + reg = readl(&mipi_dsim->fifoctrl); + + writel(reg & ~(cfg), &mipi_dsim->fifoctrl); + udelay(10 * 1000); + reg |= cfg; + + writel(reg, &mipi_dsim->fifoctrl); +} + +/* + * this function set PLL P, M and S value in D-PHY + */ +void exynos_mipi_dsi_set_phy_tunning(struct mipi_dsim_device *dsim, + unsigned int value) +{ + struct exynos_mipi_dsim *mipi_dsim = + (struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim(); + + writel(DSIM_AFC_CTL(value), &mipi_dsim->phyacchr); +} + +void exynos_mipi_dsi_set_main_disp_resol(struct mipi_dsim_device *dsim, + unsigned int width_resol, unsigned int height_resol) +{ + unsigned int reg; + struct exynos_mipi_dsim *mipi_dsim = + (struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim(); + + /* standby should be set after configuration so set to not ready*/ + reg = (readl(&mipi_dsim->mdresol)) & ~(DSIM_MAIN_STAND_BY); + writel(reg, &mipi_dsim->mdresol); + + /* reset resolution */ + reg &= ~(DSIM_MAIN_VRESOL(0x7ff) | DSIM_MAIN_HRESOL(0x7ff)); + reg |= DSIM_MAIN_VRESOL(height_resol) | DSIM_MAIN_HRESOL(width_resol); + + reg |= DSIM_MAIN_STAND_BY; + writel(reg, &mipi_dsim->mdresol); +} + +void exynos_mipi_dsi_set_main_disp_vporch(struct mipi_dsim_device *dsim, + unsigned int cmd_allow, unsigned int vfront, unsigned int vback) +{ + unsigned int reg; + struct exynos_mipi_dsim *mipi_dsim = + (struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim(); + + reg = (readl(&mipi_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, &mipi_dsim->mvporch); +} + +void exynos_mipi_dsi_set_main_disp_hporch(struct mipi_dsim_device *dsim, + unsigned int front, unsigned int back) +{ + unsigned int reg; + struct exynos_mipi_dsim *mipi_dsim = + (struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim(); + + reg = (readl(&mipi_dsim->mhporch)) & + ~((DSIM_MAIN_HFP_MASK) | (DSIM_MAIN_HBP_MASK)); + + reg |= (front << DSIM_MAIN_HFP_SHIFT) | (back << DSIM_MAIN_HBP_SHIFT); + + writel(reg, &mipi_dsim->mhporch); +} + +void exynos_mipi_dsi_set_main_disp_sync_area(struct mipi_dsim_device *dsim, + unsigned int vert, unsigned int hori) +{ + unsigned int reg; + struct exynos_mipi_dsim *mipi_dsim = + (struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim(); + + reg = (readl(&mipi_dsim->msync)) & + ~((DSIM_MAIN_VSA_MASK) | (DSIM_MAIN_HSA_MASK)); + + reg |= ((vert & 0x3ff) << DSIM_MAIN_VSA_SHIFT) | + (hori << DSIM_MAIN_HSA_SHIFT); + + writel(reg, &mipi_dsim->msync); +} + +void exynos_mipi_dsi_set_sub_disp_resol(struct mipi_dsim_device *dsim, + unsigned int vert, unsigned int hori) +{ + unsigned int reg; + struct exynos_mipi_dsim *mipi_dsim = + (struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim(); + + reg = (readl(&mipi_dsim->sdresol)) & + ~(DSIM_SUB_STANDY_MASK); + + writel(reg, &mipi_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, &mipi_dsim->sdresol); + + /* DSIM STANDBY */ + reg |= (1 << DSIM_SUB_STANDY_SHIFT); + writel(reg, &mipi_dsim->sdresol); +} + +void exynos_mipi_dsi_init_config(struct mipi_dsim_device *dsim) +{ + struct mipi_dsim_config *dsim_config = dsim->dsim_config; + struct exynos_mipi_dsim *mipi_dsim = + (struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim(); + unsigned int cfg = (readl(&mipi_dsim->config)) & + ~((1 << DSIM_EOT_PACKET_SHIFT) | + (0x1f << DSIM_HSA_MODE_SHIFT) | + (0x3 << DSIM_NUM_OF_DATALANE_SHIFT)); + + cfg = (dsim_config->auto_flush << DSIM_AUTO_FLUSH_SHIFT) | + (dsim_config->eot_disable << DSIM_EOT_PACKET_SHIFT) | + (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, &mipi_dsim->config); +} + +void exynos_mipi_dsi_display_config(struct mipi_dsim_device *dsim, + struct mipi_dsim_config *dsim_config) +{ + struct exynos_mipi_dsim *mipi_dsim = + (struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim(); + + u32 reg = (readl(&mipi_dsim->config)) & + ~((0x3 << DSIM_BURST_MODE_SHIFT) | (1 << DSIM_VIDEO_MODE_SHIFT) + | (0x3 << DSIM_MAINVC_SHIFT) | (0x7 << DSIM_MAINPIX_SHIFT) + | (0x3 << DSIM_SUBVC_SHIFT) | (0x7 << DSIM_SUBPIX_SHIFT)); + + if (dsim_config->e_interface == DSIM_VIDEO) + reg |= (1 << DSIM_VIDEO_MODE_SHIFT); + else if (dsim_config->e_interface == DSIM_COMMAND) + reg &= ~(1 << DSIM_VIDEO_MODE_SHIFT); + else { + printf("unknown lcd type.\n"); + return; + } + + /* main lcd */ + reg |= ((u8) (dsim_config->e_burst_mode) & 0x3) << DSIM_BURST_MODE_SHIFT + | ((u8) (dsim_config->e_virtual_ch) & 0x3) << DSIM_MAINVC_SHIFT + | ((u8) (dsim_config->e_pixel_format) & 0x7) << DSIM_MAINPIX_SHIFT; + + writel(reg, &mipi_dsim->config); +} + +void exynos_mipi_dsi_enable_lane(struct mipi_dsim_device *dsim, + unsigned int lane, unsigned int enable) +{ + unsigned int reg; + struct exynos_mipi_dsim *mipi_dsim = + (struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim(); + + reg = readl(&mipi_dsim->config); + + if (enable) + reg |= DSIM_LANE_ENx(lane); + else + reg &= ~DSIM_LANE_ENx(lane); + + writel(reg, &mipi_dsim->config); +} + + +void exynos_mipi_dsi_set_data_lane_number(struct mipi_dsim_device *dsim, + unsigned int count) +{ + unsigned int cfg; + struct exynos_mipi_dsim *mipi_dsim = + (struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim(); + + /* get the data lane number. */ + cfg = DSIM_NUM_OF_DATA_LANE(count); + + writel(cfg, &mipi_dsim->config); +} + +void exynos_mipi_dsi_enable_afc(struct mipi_dsim_device *dsim, + unsigned int enable, unsigned int afc_code) +{ + struct exynos_mipi_dsim *mipi_dsim = + (struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim(); + unsigned int reg = readl(&mipi_dsim->phyacchr); + + reg = 0; + + if (enable) { + reg |= DSIM_AFC_EN; + reg &= ~(0x7 << DSIM_AFC_CTL_SHIFT); + reg |= DSIM_AFC_CTL(afc_code); + } else + reg &= ~DSIM_AFC_EN; + + writel(reg, &mipi_dsim->phyacchr); +} + +void exynos_mipi_dsi_enable_pll_bypass(struct mipi_dsim_device *dsim, + unsigned int enable) +{ + struct exynos_mipi_dsim *mipi_dsim = + (struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim(); + unsigned int reg = (readl(&mipi_dsim->clkctrl)) & + ~(DSIM_PLL_BYPASS_EXTERNAL); + + reg |= enable << DSIM_PLL_BYPASS_SHIFT; + + writel(reg, &mipi_dsim->clkctrl); +} + +void exynos_mipi_dsi_pll_freq_band(struct mipi_dsim_device *dsim, + unsigned int freq_band) +{ + struct exynos_mipi_dsim *mipi_dsim = + (struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim(); + unsigned int reg = (readl(&mipi_dsim->pllctrl)) & + ~(0x1f << DSIM_FREQ_BAND_SHIFT); + + reg |= ((freq_band & 0x1f) << DSIM_FREQ_BAND_SHIFT); + + writel(reg, &mipi_dsim->pllctrl); +} + +void exynos_mipi_dsi_pll_freq(struct mipi_dsim_device *dsim, + unsigned int pre_divider, unsigned int main_divider, + unsigned int scaler) +{ + struct exynos_mipi_dsim *mipi_dsim = + (struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim(); + unsigned int reg = (readl(&mipi_dsim->pllctrl)) & + ~(0x7ffff << 1); + + reg |= ((pre_divider & 0x3f) << DSIM_PREDIV_SHIFT) | + ((main_divider & 0x1ff) << DSIM_MAIN_SHIFT) | + ((scaler & 0x7) << DSIM_SCALER_SHIFT); + + writel(reg, &mipi_dsim->pllctrl); +} + +void exynos_mipi_dsi_pll_stable_time(struct mipi_dsim_device *dsim, + unsigned int lock_time) +{ + struct exynos_mipi_dsim *mipi_dsim = + (struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim(); + + writel(lock_time, &mipi_dsim->plltmr); +} + +void exynos_mipi_dsi_enable_pll(struct mipi_dsim_device *dsim, + unsigned int enable) +{ + struct exynos_mipi_dsim *mipi_dsim = + (struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim(); + unsigned int reg = (readl(&mipi_dsim->pllctrl)) & + ~(0x1 << DSIM_PLL_EN_SHIFT); + + reg |= ((enable & 0x1) << DSIM_PLL_EN_SHIFT); + + writel(reg, &mipi_dsim->pllctrl); +} + +void exynos_mipi_dsi_set_byte_clock_src(struct mipi_dsim_device *dsim, + unsigned int src) +{ + struct exynos_mipi_dsim *mipi_dsim = + (struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim(); + unsigned int reg = (readl(&mipi_dsim->clkctrl)) & + ~(0x3 << DSIM_BYTE_CLK_SRC_SHIFT); + + reg |= ((unsigned int) src) << DSIM_BYTE_CLK_SRC_SHIFT; + + writel(reg, &mipi_dsim->clkctrl); +} + +void exynos_mipi_dsi_enable_byte_clock(struct mipi_dsim_device *dsim, + unsigned int enable) +{ + struct exynos_mipi_dsim *mipi_dsim = + (struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim(); + unsigned int reg = (readl(&mipi_dsim->clkctrl)) & + ~(1 << DSIM_BYTE_CLKEN_SHIFT); + + reg |= enable << DSIM_BYTE_CLKEN_SHIFT; + + writel(reg, &mipi_dsim->clkctrl); +} + +void exynos_mipi_dsi_set_esc_clk_prs(struct mipi_dsim_device *dsim, + unsigned int enable, unsigned int prs_val) +{ + struct exynos_mipi_dsim *mipi_dsim = + (struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim(); + unsigned int reg = (readl(&mipi_dsim->clkctrl)) & + ~((1 << DSIM_ESC_CLKEN_SHIFT) | (0xffff)); + + reg |= enable << DSIM_ESC_CLKEN_SHIFT; + if (enable) + reg |= prs_val; + + writel(reg, &mipi_dsim->clkctrl); +} + +void exynos_mipi_dsi_enable_esc_clk_on_lane(struct mipi_dsim_device *dsim, + unsigned int lane_sel, unsigned int enable) +{ + struct exynos_mipi_dsim *mipi_dsim = + (struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim(); + unsigned int reg = readl(&mipi_dsim->clkctrl); + + if (enable) + reg |= DSIM_LANE_ESC_CLKEN(lane_sel); + else + + reg &= ~DSIM_LANE_ESC_CLKEN(lane_sel); + + writel(reg, &mipi_dsim->clkctrl); +} + +void exynos_mipi_dsi_force_dphy_stop_state(struct mipi_dsim_device *dsim, + unsigned int enable) +{ + struct exynos_mipi_dsim *mipi_dsim = + (struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim(); + unsigned int reg = (readl(&mipi_dsim->escmode)) & + ~(0x1 << DSIM_FORCE_STOP_STATE_SHIFT); + + reg |= ((enable & 0x1) << DSIM_FORCE_STOP_STATE_SHIFT); + + writel(reg, &mipi_dsim->escmode); +} + +unsigned int exynos_mipi_dsi_is_lane_state(struct mipi_dsim_device *dsim) +{ + struct exynos_mipi_dsim *mipi_dsim = + (struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim(); + unsigned int reg = readl(&mipi_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; +} + +void exynos_mipi_dsi_set_stop_state_counter(struct mipi_dsim_device *dsim, + unsigned int cnt_val) +{ + struct exynos_mipi_dsim *mipi_dsim = + (struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim(); + unsigned int reg = (readl(&mipi_dsim->escmode)) & + ~(0x7ff << DSIM_STOP_STATE_CNT_SHIFT); + + reg |= ((cnt_val & 0x7ff) << DSIM_STOP_STATE_CNT_SHIFT); + + writel(reg, &mipi_dsim->escmode); +} + +void exynos_mipi_dsi_set_bta_timeout(struct mipi_dsim_device *dsim, + unsigned int timeout) +{ + struct exynos_mipi_dsim *mipi_dsim = + (struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim(); + unsigned int reg = (readl(&mipi_dsim->timeout)) & + ~(0xff << DSIM_BTA_TOUT_SHIFT); + + reg |= (timeout << DSIM_BTA_TOUT_SHIFT); + + writel(reg, &mipi_dsim->timeout); +} + +void exynos_mipi_dsi_set_lpdr_timeout(struct mipi_dsim_device *dsim, + unsigned int timeout) +{ + struct exynos_mipi_dsim *mipi_dsim = + (struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim(); + unsigned int reg = (readl(&mipi_dsim->timeout)) & + ~(0xffff << DSIM_LPDR_TOUT_SHIFT); + + reg |= (timeout << DSIM_LPDR_TOUT_SHIFT); + + writel(reg, &mipi_dsim->timeout); +} + +void exynos_mipi_dsi_set_cpu_transfer_mode(struct mipi_dsim_device *dsim, + unsigned int lp) +{ + struct exynos_mipi_dsim *mipi_dsim = + (struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim(); + unsigned int reg = readl(&mipi_dsim->escmode); + + reg &= ~DSIM_CMD_LPDT_LP; + + if (lp) + reg |= DSIM_CMD_LPDT_LP; + + writel(reg, &mipi_dsim->escmode); +} + +void exynos_mipi_dsi_set_lcdc_transfer_mode(struct mipi_dsim_device *dsim, + unsigned int lp) +{ + struct exynos_mipi_dsim *mipi_dsim = + (struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim(); + unsigned int reg = readl(&mipi_dsim->escmode); + + reg &= ~DSIM_TX_LPDT_LP; + + if (lp) + reg |= DSIM_TX_LPDT_LP; + + writel(reg, &mipi_dsim->escmode); +} + +void exynos_mipi_dsi_enable_hs_clock(struct mipi_dsim_device *dsim, + unsigned int enable) +{ + struct exynos_mipi_dsim *mipi_dsim = + (struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim(); + unsigned int reg = (readl(&mipi_dsim->clkctrl)) & + ~(1 << DSIM_TX_REQUEST_HSCLK_SHIFT); + + reg |= enable << DSIM_TX_REQUEST_HSCLK_SHIFT; + + writel(reg, &mipi_dsim->clkctrl); +} + +void exynos_mipi_dsi_dp_dn_swap(struct mipi_dsim_device *dsim, + unsigned int swap_en) +{ + struct exynos_mipi_dsim *mipi_dsim = + (struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim(); + unsigned int reg = readl(&mipi_dsim->phyacchr1); + + reg &= ~(0x3 << DSIM_DPDN_SWAP_DATA_SHIFT); + reg |= (swap_en & 0x3) << DSIM_DPDN_SWAP_DATA_SHIFT; + + writel(reg, &mipi_dsim->phyacchr1); +} + +void exynos_mipi_dsi_hs_zero_ctrl(struct mipi_dsim_device *dsim, + unsigned int hs_zero) +{ + struct exynos_mipi_dsim *mipi_dsim = + (struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim(); + unsigned int reg = (readl(&mipi_dsim->pllctrl)) & + ~(0xf << DSIM_ZEROCTRL_SHIFT); + + reg |= ((hs_zero & 0xf) << DSIM_ZEROCTRL_SHIFT); + + writel(reg, &mipi_dsim->pllctrl); +} + +void exynos_mipi_dsi_prep_ctrl(struct mipi_dsim_device *dsim, unsigned int prep) +{ + struct exynos_mipi_dsim *mipi_dsim = + (struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim(); + unsigned int reg = (readl(&mipi_dsim->pllctrl)) & + ~(0x7 << DSIM_PRECTRL_SHIFT); + + reg |= ((prep & 0x7) << DSIM_PRECTRL_SHIFT); + + writel(reg, &mipi_dsim->pllctrl); +} + +void exynos_mipi_dsi_clear_interrupt(struct mipi_dsim_device *dsim) +{ + struct exynos_mipi_dsim *mipi_dsim = + (struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim(); + unsigned int reg = readl(&mipi_dsim->intsrc); + + reg |= INTSRC_PLL_STABLE; + + writel(reg, &mipi_dsim->intsrc); +} + +void exynos_mipi_dsi_clear_all_interrupt(struct mipi_dsim_device *dsim) +{ + struct exynos_mipi_dsim *mipi_dsim = + (struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim(); + unsigned int reg = readl(&mipi_dsim->intsrc); + + reg |= 0xffffffff; + + writel(reg, &mipi_dsim->intsrc); +} + +unsigned int exynos_mipi_dsi_is_pll_stable(struct mipi_dsim_device *dsim) +{ + unsigned int reg; + struct exynos_mipi_dsim *mipi_dsim = + (struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim(); + + reg = readl(&mipi_dsim->status); + + return reg & DSIM_PLL_STABLE ? 1 : 0; +} + +unsigned int exynos_mipi_dsi_get_fifo_state(struct mipi_dsim_device *dsim) +{ + unsigned int ret; + struct exynos_mipi_dsim *mipi_dsim = + (struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim(); + + ret = readl(&mipi_dsim->fifoctrl) & ~(0x1f); + + return ret; +} + +void exynos_mipi_dsi_wr_tx_header(struct mipi_dsim_device *dsim, + unsigned int di, unsigned int data0, unsigned int data1) +{ + struct exynos_mipi_dsim *mipi_dsim = + (struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim(); + unsigned int reg = (DSIM_PKTHDR_DAT1(data1) | DSIM_PKTHDR_DAT0(data0) | + DSIM_PKTHDR_DI(di)); + + writel(reg, &mipi_dsim->pkthdr); +} + +unsigned int _exynos_mipi_dsi_get_frame_done_status(struct mipi_dsim_device + *dsim) +{ + struct exynos_mipi_dsim *mipi_dsim = + (struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim(); + unsigned int reg = readl(&mipi_dsim->intsrc); + + return (reg & INTSRC_FRAME_DONE) ? 1 : 0; +} + +void _exynos_mipi_dsi_clear_frame_done(struct mipi_dsim_device *dsim) +{ + struct exynos_mipi_dsim *mipi_dsim = + (struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim(); + unsigned int reg = readl(&mipi_dsim->intsrc); + + writel(reg | INTSRC_FRAME_DONE, &mipi_dsim->intsrc); +} + +void exynos_mipi_dsi_wr_tx_data(struct mipi_dsim_device *dsim, + unsigned int tx_data) +{ + struct exynos_mipi_dsim *mipi_dsim = + (struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim(); + + writel(tx_data, &mipi_dsim->payload); +} diff --git a/drivers/video/exynos_mipi_dsi_lowlevel.h b/drivers/video/exynos_mipi_dsi_lowlevel.h new file mode 100644 index 0000000..4b8c441 --- /dev/null +++ b/drivers/video/exynos_mipi_dsi_lowlevel.h @@ -0,0 +1,111 @@ +/* + * Copyright (C) 2012 Samsung Electronics + * + * Author: InKi Dae inki.dae@samsung.com + * Author: 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 as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#ifndef _EXYNOS_MIPI_DSI_LOWLEVEL_H +#define _EXYNOS_MIPI_DSI_LOWLEVEL_H + +void exynos_mipi_dsi_register(struct mipi_dsim_device *dsim); +void exynos_mipi_dsi_func_reset(struct mipi_dsim_device *dsim); +void exynos_mipi_dsi_sw_reset(struct mipi_dsim_device *dsim); +void exynos_mipi_dsi_sw_release(struct mipi_dsim_device *dsim); +void exynos_mipi_dsi_set_interrupt_mask(struct mipi_dsim_device *dsim, + unsigned int mode, unsigned int mask); +void exynos_mipi_dsi_set_data_lane_number(struct mipi_dsim_device *dsim, + unsigned int count); +void exynos_mipi_dsi_init_fifo_pointer(struct mipi_dsim_device *dsim, + unsigned int cfg); +void exynos_mipi_dsi_set_phy_tunning(struct mipi_dsim_device *dsim, + unsigned int value); +void exynos_mipi_dsi_set_phy_tunning(struct mipi_dsim_device *dsim, + unsigned int value); +void exynos_mipi_dsi_set_main_disp_resol(struct mipi_dsim_device *dsim, + unsigned int width_resol, unsigned int height_resol); +void exynos_mipi_dsi_set_main_disp_vporch(struct mipi_dsim_device *dsim, + unsigned int cmd_allow, unsigned int vfront, unsigned int vback); +void exynos_mipi_dsi_set_main_disp_hporch(struct mipi_dsim_device *dsim, + unsigned int front, unsigned int back); +void exynos_mipi_dsi_set_main_disp_sync_area(struct mipi_dsim_device *dsim, + unsigned int vert, unsigned int hori); +void exynos_mipi_dsi_set_sub_disp_resol(struct mipi_dsim_device *dsim, + unsigned int vert, unsigned int hori); +void exynos_mipi_dsi_init_config(struct mipi_dsim_device *dsim); +void exynos_mipi_dsi_display_config(struct mipi_dsim_device *dsim, + struct mipi_dsim_config *dsim_config); +void exynos_mipi_dsi_set_data_lane_number(struct mipi_dsim_device *dsim, + unsigned int count); +void exynos_mipi_dsi_enable_lane(struct mipi_dsim_device *dsim, + unsigned int lane, unsigned int enable); +void exynos_mipi_dsi_enable_afc(struct mipi_dsim_device *dsim, + unsigned int enable, unsigned int afc_code); +void exynos_mipi_dsi_enable_pll_bypass(struct mipi_dsim_device *dsim, + unsigned int enable); +void exynos_mipi_dsi_pll_freq_band(struct mipi_dsim_device *dsim, + unsigned int freq_band); +void exynos_mipi_dsi_pll_freq(struct mipi_dsim_device *dsim, + unsigned int pre_divider, unsigned int main_divider, + unsigned int scaler); +void exynos_mipi_dsi_pll_stable_time(struct mipi_dsim_device *dsim, + unsigned int lock_time); +void exynos_mipi_dsi_enable_pll(struct mipi_dsim_device *dsim, + unsigned int enable); +void exynos_mipi_dsi_set_byte_clock_src(struct mipi_dsim_device *dsim, + unsigned int src); +void exynos_mipi_dsi_enable_byte_clock(struct mipi_dsim_device *dsim, + unsigned int enable); +void exynos_mipi_dsi_set_esc_clk_prs(struct mipi_dsim_device *dsim, + unsigned int enable, unsigned int prs_val); +void exynos_mipi_dsi_enable_esc_clk_on_lane(struct mipi_dsim_device *dsim, + unsigned int lane_sel, unsigned int enable); +void exynos_mipi_dsi_force_dphy_stop_state(struct mipi_dsim_device *dsim, + unsigned int enable); +unsigned int exynos_mipi_dsi_is_lane_state(struct mipi_dsim_device *dsim); +void exynos_mipi_dsi_set_stop_state_counter(struct mipi_dsim_device *dsim, + unsigned int cnt_val); +void exynos_mipi_dsi_set_bta_timeout(struct mipi_dsim_device *dsim, + unsigned int timeout); +void exynos_mipi_dsi_set_lpdr_timeout(struct mipi_dsim_device *dsim, + unsigned int timeout); +void exynos_mipi_dsi_set_lcdc_transfer_mode(struct mipi_dsim_device *dsim, + unsigned int lp); +void exynos_mipi_dsi_set_cpu_transfer_mode(struct mipi_dsim_device *dsim, + unsigned int lp); +void exynos_mipi_dsi_enable_hs_clock(struct mipi_dsim_device *dsim, + unsigned int enable); +void exynos_mipi_dsi_dp_dn_swap(struct mipi_dsim_device *dsim, + unsigned int swap_en); +void exynos_mipi_dsi_hs_zero_ctrl(struct mipi_dsim_device *dsim, + unsigned int hs_zero); +void exynos_mipi_dsi_prep_ctrl(struct mipi_dsim_device *dsim, + unsigned int prep); +void exynos_mipi_dsi_clear_interrupt(struct mipi_dsim_device *dsim); +void exynos_mipi_dsi_clear_all_interrupt(struct mipi_dsim_device *dsim); +unsigned int exynos_mipi_dsi_is_pll_stable(struct mipi_dsim_device *dsim); +unsigned int exynos_mipi_dsi_get_fifo_state(struct mipi_dsim_device *dsim); +unsigned int _exynos_mipi_dsi_get_frame_done_status(struct mipi_dsim_device + *dsim); +void _exynos_mipi_dsi_clear_frame_done(struct mipi_dsim_device *dsim); +void exynos_mipi_dsi_wr_tx_header(struct mipi_dsim_device *dsim, + unsigned int di, unsigned int data0, unsigned int data1); +void exynos_mipi_dsi_wr_tx_data(struct mipi_dsim_device *dsim, + unsigned int tx_data); + +#endif /* _EXYNOS_MIPI_DSI_LOWLEVEL_H */