/* SPDX-License-Identifier: GPL-2.0-only
*
* Copyright © 2019-2020 Intel Corporation
*/
#ifndef __KMB_DSI_H__
#define __KMB_DSI_H__
#include <drm/drm_encoder.h>
#include <drm/drm_mipi_dsi.h>
/* MIPI TX CFG */
#define MIPI_TX_LANE_DATA_RATE_MBPS 891
#define MIPI_TX_REF_CLK_KHZ 24000
#define MIPI_TX_CFG_CLK_KHZ 24000
#define MIPI_TX_BPP 24
/* DPHY Tx test codes*/
#define TEST_CODE_FSM_CONTROL 0x03
#define TEST_CODE_MULTIPLE_PHY_CTRL 0x0C
#define TEST_CODE_PLL_PROPORTIONAL_CHARGE_PUMP_CTRL 0x0E
#define TEST_CODE_PLL_INTEGRAL_CHARGE_PUMP_CTRL 0x0F
#define TEST_CODE_PLL_VCO_CTRL 0x12
#define TEST_CODE_PLL_GMP_CTRL 0x13
#define TEST_CODE_PLL_PHASE_ERR_CTRL 0x14
#define TEST_CODE_PLL_LOCK_FILTER 0x15
#define TEST_CODE_PLL_UNLOCK_FILTER 0x16
#define TEST_CODE_PLL_INPUT_DIVIDER 0x17
#define TEST_CODE_PLL_FEEDBACK_DIVIDER 0x18
#define PLL_FEEDBACK_DIVIDER_HIGH BIT(7)
#define TEST_CODE_PLL_OUTPUT_CLK_SEL 0x19
#define PLL_N_OVR_EN BIT(4)
#define PLL_M_OVR_EN BIT(5)
#define TEST_CODE_VOD_LEVEL 0x24
#define TEST_CODE_PLL_CHARGE_PUMP_BIAS 0x1C
#define TEST_CODE_PLL_LOCK_DETECTOR 0x1D
#define TEST_CODE_HS_FREQ_RANGE_CFG 0x44
#define TEST_CODE_PLL_ANALOG_PROG 0x1F
#define TEST_CODE_SLEW_RATE_OVERRIDE_CTRL 0xA0
#define TEST_CODE_SLEW_RATE_DDL_LOOP_CTRL 0xA3
#define TEST_CODE_SLEW_RATE_DDL_CYCLES 0xA4
/* DPHY params */
#define PLL_N_MIN 0
#define PLL_N_MAX 15
#define PLL_M_MIN 62
#define PLL_M_MAX 623
#define PLL_FVCO_MAX 1250
#define TIMEOUT 600
#define MIPI_TX_FRAME_GEN 4
#define MIPI_TX_FRAME_GEN_SECTIONS 4
#define MIPI_CTRL_VIRTUAL_CHANNELS 4
#define MIPI_D_LANES_PER_DPHY 2
#define MIPI_CTRL_2LANE_MAX_MC_FIFO_LOC 255
#define MIPI_CTRL_4LANE_MAX_MC_FIFO_LOC 511
/* 2 Data Lanes per D-PHY */
#define MIPI_DPHY_D_LANES 2
#define MIPI_DPHY_DEFAULT_BIT_RATES 63
#define KMB_MIPI_DEFAULT_CLK 24000000
#define KMB_MIPI_DEFAULT_CFG_CLK 24000000
#define to_kmb_dsi(x) container_of(x, struct kmb_dsi, base)
struct kmb_dsi {
struct drm_encoder base;
struct device *dev;
struct platform_device *pdev;
struct mipi_dsi_host *host;
struct mipi_dsi_device *device;
struct drm_bridge *adv_bridge;
void __iomem *mipi_mmio;
struct clk *clk_mipi;
struct clk *clk_mipi_ecfg;
struct clk *clk_mipi_cfg;
int sys_clk_mhz;
};
/* DPHY Tx test codes */
enum mipi_ctrl_num {
MIPI_CTRL0 = 0,
MIPI_CTRL1,
MIPI_CTRL2,
MIPI_CTRL3,
MIPI_CTRL4,
MIPI_CTRL5,
MIPI_CTRL6,
MIPI_CTRL7,
MIPI_CTRL8,
MIPI_CTRL9,
MIPI_CTRL_NA
};
enum mipi_dphy_num {
MIPI_DPHY0 = 0,
MIPI_DPHY1,
MIPI_DPHY2,
MIPI_DPHY3,
MIPI_DPHY4,
MIPI_DPHY5,
MIPI_DPHY6,
MIPI_DPHY7,
MIPI_DPHY8,
MIPI_DPHY9,
MIPI_DPHY_NA
};
enum mipi_dir {
MIPI_RX,
MIPI_TX
};
enum mipi_ctrl_type {
MIPI_DSI,
MIPI_CSI
};
enum mipi_data_if {
MIPI_IF_DMA,
MIPI_IF_PARALLEL
};
enum mipi_data_mode {
MIPI_DATA_MODE0,
MIPI_DATA_MODE1,
MIPI_DATA_MODE2,
MIPI_DATA_MODE3
};
enum mipi_dsi_video_mode {
DSI_VIDEO_MODE_NO_BURST_PULSE,
DSI_VIDEO_MODE_NO_BURST_EVENT,
DSI_VIDEO_MODE_BURST
};
enum mipi_dsi_blanking_mode {
TRANSITION_TO_LOW_POWER,
SEND_BLANK_PACKET
};
enum mipi_dsi_eotp {
DSI_EOTP_DISABLED,
DSI_EOTP_ENABLES
};
enum mipi_dsi_data_type {
DSI_SP_DT_RESERVED_00 = 0x00,
DSI_SP_DT_VSYNC_START = 0x01,
DSI_SP_DT_COLOR_MODE_OFF = 0x02,
DSI_SP_DT_GENERIC_SHORT_WR = 0x03,
DSI_SP_DT_GENERIC_RD = 0x04,
DSI_SP_DT_DCS_SHORT_WR = 0x05,
DSI_SP_DT_DCS_RD = 0x06,
DSI_SP_DT_EOTP = 0x08,
DSI_LP_DT_NULL = 0x09,
DSI_LP_DT_RESERVED_0A = 0x0a,
DSI_LP_DT_RESERVED_0B = 0x0b,
DSI_LP_DT_LPPS_YCBCR422_20B = 0x0c,
DSI_LP_DT_PPS_RGB101010_30B = 0x0d,
DSI_LP_DT_PPS_RGB565_16B = 0x0e,
DSI_LP_DT_RESERVED_0F = 0x0f,
DSI_SP_DT_RESERVED_10 = 0x10,
DSI_SP_DT_VSYNC_END = 0x11,
DSI_SP_DT_COLOR_MODE_ON = 0x12,
DSI_SP_DT_GENERIC_SHORT_WR_1PAR = 0x13,
DSI_SP_DT_GENERIC_RD_1PAR = 0x14,
DSI_SP_DT_DCS_SHORT_WR_1PAR = 0x15,
DSI_SP_DT_RESERVED_16 = 0x16,
DSI_SP_DT_RESERVED_17 = 0x17,
DSI_SP_DT_RESERVED_18 = 0x18,
DSI_LP_DT_BLANK = 0x19,
DSI_LP_DT_RESERVED_1A = 0x1a,
DSI_LP_DT_RESERVED_1B = 0x1b,
DSI_LP_DT_PPS_YCBCR422_24B = 0x1c,
DSI_LP_DT_PPS_RGB121212_36B = 0x1d,
DSI_LP_DT_PPS_RGB666_18B = 0x1e,
DSI_LP_DT_RESERVED_1F = 0x1f,
DSI_SP_DT_RESERVED_20 = 0x20,
DSI_SP_DT_HSYNC_START = 0x21,
DSI_SP_DT_SHUT_DOWN_PERIPH_CMD = 0x22,
DSI_SP_DT_GENERIC_SHORT_WR_2PAR = 0x23,
DSI_SP_DT_GENERIC_RD_2PAR = 0x24,
DSI_SP_DT_RESERVED_25 = 0x25,
DSI_SP_DT_RESERVED_26 = 0x26,
DSI_SP_DT_RESERVED_27 = 0x27,
DSI_SP_DT_RESERVED_28 = 0x28,
DSI_LP_DT_GENERIC_LONG_WR = 0x29,
DSI_LP_DT_RESERVED_2A = 0x2a,
DSI_LP_DT_RESERVED_2B = 0x2b,
DSI_LP_DT_PPS_YCBCR422_16B = 0x2c,
DSI_LP_DT_RESERVED_2D = 0x2d,
DSI_LP_DT_LPPS_RGB666_18B = 0x2e,
DSI_LP_DT_RESERVED_2F = 0x2f,
DSI_SP_DT_RESERVED_30 = 0x30,
DSI_SP_DT_HSYNC_END = 0x31,
DSI_SP_DT_TURN_ON_PERIPH_CMD = 0x32,
DSI_SP_DT_RESERVED_33 = 0x33,
DSI_SP_DT_RESERVED_34 = 0x34,
DSI_SP_DT_RESERVED_35 = 0x35,
DSI_SP_DT_RESERVED_36 = 0x36,
DSI_SP_DT_SET_MAX_RETURN_PKT_SIZE = 0x37,
DSI_SP_DT_RESERVED_38 = 0x38,
DSI_LP_DT_DSC_LONG_WR = 0x39,
DSI_LP_DT_RESERVED_3A = 0x3a,
DSI_LP_DT_RESERVED_3B = 0x3b,
DSI_LP_DT_RESERVED_3C = 0x3c,
DSI_LP_DT_PPS_YCBCR420_12B = 0x3d,
DSI_LP_DT_PPS_RGB888_24B = 0x3e,
DSI_LP_DT_RESERVED_3F = 0x3f
};
enum mipi_tx_hs_tp_sel {
MIPI_TX_HS_TP_WHOLE_FRAME_COLOR0 = 0,
MIPI_TX_HS_TP_WHOLE_FRAME_COLOR1,
MIPI_TX_HS_TP_V_STRIPES,
MIPI_TX_HS_TP_H_STRIPES,
};
enum dphy_mode {
MIPI_DPHY_SLAVE = 0,
MIPI_DPHY_MASTER
};
enum dphy_tx_fsm {
DPHY_TX_POWERDWN = 0,
DPHY_TX_BGPON,
DPHY_TX_TERMCAL,
DPHY_TX_TERMCALUP,
DPHY_TX_OFFSETCAL,
DPHY_TX_LOCK,
DPHY_TX_SRCAL,
DPHY_TX_IDLE,
DPHY_TX_ULP,
DPHY_TX_LANESTART,
DPHY_TX_CLKALIGN,
DPHY_TX_DDLTUNNING,
DPHY_TX_ULP_FORCE_PLL,
DPHY_TX_LOCK_LOSS
};
struct mipi_data_type_params {
u8 size_constraint_pixels;
u8 size_constraint_bytes;
u8 pixels_per_pclk;
u8 bits_per_pclk;
};
struct mipi_tx_dsi_cfg {
u8 hfp_blank_en; /* Horizontal front porch blanking enable */
u8 eotp_en; /* End of transmission packet enable */
/* Last vertical front porch blanking mode */
u8 lpm_last_vfp_line;
/* First vertical sync active blanking mode */
u8 lpm_first_vsa_line;
u8 sync_pulse_eventn; /* Sync type */
u8 hfp_blanking; /* Horizontal front porch blanking mode */
u8 hbp_blanking; /* Horizontal back porch blanking mode */
u8 hsa_blanking; /* Horizontal sync active blanking mode */
u8 v_blanking; /* Vertical timing blanking mode */
};
struct mipi_tx_frame_section_cfg {
u32 dma_v_stride;
u16 dma_v_scale_cfg;
u16 width_pixels;
u16 height_lines;
u8 dma_packed;
u8 bpp;
u8 bpp_unpacked;
u8 dma_h_stride;
u8 data_type;
u8 data_mode;
u8 dma_flip_rotate_sel;
};
struct mipi_tx_frame_timing_cfg {
u32 bpp;
u32 lane_rate_mbps;
u32 hsync_width;
u32 h_backporch;
u32 h_frontporch;
u32 h_active;
u16 vsync_width;
u16 v_backporch;
u16 v_frontporch;
u16 v_active;
u8 active_lanes;
};
struct mipi_tx_frame_sect_phcfg {
u32 wc;
enum mipi_data_mode data_mode;
enum mipi_dsi_data_type data_type;
u8 vchannel;
u8 dma_packed;
};
struct mipi_tx_frame_cfg {
struct mipi_tx_frame_section_cfg *sections[MIPI_TX_FRAME_GEN_SECTIONS];
u32 hsync_width; /* in pixels */
u32 h_backporch; /* in pixels */
u32 h_frontporch; /* in pixels */
u16 vsync_width; /* in lines */
u16 v_backporch; /* in lines */
u16 v_frontporch; /* in lines */
};
struct mipi_tx_ctrl_cfg {
struct mipi_tx_frame_cfg *frames[MIPI_TX_FRAME_GEN];
const struct mipi_tx_dsi_cfg *tx_dsi_cfg;
u8 line_sync_pkt_en;
u8 line_counter_active;
u8 frame_counter_active;
u8 tx_hsclkkidle_cnt;
u8 tx_hsexit_cnt;
u8 tx_crc_en;
u8 tx_hact_wait_stop;
u8 tx_always_use_hact;
u8 tx_wait_trig;
u8 tx_wait_all_sect;
};
/* configuration structure for MIPI control */
struct mipi_ctrl_cfg {
u8 active_lanes; /* # active lanes per controller 2/4 */
u32 lane_rate_mbps; /* MBPS */
u32 ref_clk_khz;
u32 cfg_clk_khz;
struct mipi_tx_ctrl_cfg tx_ctrl_cfg;
};
static inline void kmb_write_mipi(struct kmb_dsi *kmb_dsi,
unsigned int reg, u32 value)
{
writel(value, (kmb_dsi->mipi_mmio + reg));
}
static inline u32 kmb_read_mipi(struct kmb_dsi *kmb_dsi, unsigned int reg)
{
return readl(kmb_dsi->mipi_mmio + reg);
}
static inline void kmb_write_bits_mipi(struct kmb_dsi *kmb_dsi,
unsigned int reg, u32 offset,
u32 num_bits, u32 value)
{
u32 reg_val = kmb_read_mipi(kmb_dsi, reg);
u32 mask = (1 << num_bits) - 1;
value &= mask;
mask <<= offset;
reg_val &= (~mask);
reg_val |= (value << offset);
kmb_write_mipi(kmb_dsi, reg, reg_val);
}
static inline void kmb_set_bit_mipi(struct kmb_dsi *kmb_dsi,
unsigned int reg, u32 offset)
{
u32 reg_val = kmb_read_mipi(kmb_dsi, reg);
kmb_write_mipi(kmb_dsi, reg, reg_val | (1 << offset));
}
static inline void kmb_clr_bit_mipi(struct kmb_dsi *kmb_dsi,
unsigned int reg, u32 offset)
{
u32 reg_val = kmb_read_mipi(kmb_dsi, reg);
kmb_write_mipi(kmb_dsi, reg, reg_val & (~(1 << offset)));
}
int kmb_dsi_host_bridge_init(struct device *dev);
struct kmb_dsi *kmb_dsi_init(struct platform_device *pdev);
void kmb_dsi_host_unregister(struct kmb_dsi *kmb_dsi);
int kmb_dsi_mode_set(struct kmb_dsi *kmb_dsi, struct drm_display_mode *mode,
int sys_clk_mhz, struct drm_atomic_state *old_state);
int kmb_dsi_map_mmio(struct kmb_dsi *kmb_dsi);
int kmb_dsi_clk_init(struct kmb_dsi *kmb_dsi);
int kmb_dsi_encoder_init(struct drm_device *dev, struct kmb_dsi *kmb_dsi);
#endif /* __KMB_DSI_H__ */
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