// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) Rockchip Electronics Co.Ltd
* Author:
* Guochun Huang <hero.huang@rock-chips.com>
*/
#include <linux/clk.h>
#include <linux/component.h>
#include <linux/gpio.h>
#include <linux/iopoll.h>
#include <linux/math64.h>
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/of_gpio.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include <linux/reset.h>
#include <linux/mfd/syscon.h>
#include <linux/phy/phy.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_dsc.h>
#include <drm/drm_mipi_dsi.h>
#include <drm/drm_of.h>
#include <drm/drm_panel.h>
#include <video/mipi_display.h>
#include <video/videomode.h>
#include <asm/unaligned.h>
#include <uapi/linux/videodev2.h>
#include <drm/drm_panel.h>
#include <drm/drm_connector.h>
#include <drm/drm_probe_helper.h>
#include <drm/drm_simple_kms_helper.h>
#include "rockchip_drm_drv.h"
#include "rockchip_drm_vop.h"
#define UPDATE(v, h, l) (((v) << (l)) & GENMASK((h), (l)))
#define DSI2_PWR_UP 0x000c
#define RESET 0
#define POWER_UP BIT(0)
#define CMD_TX_MODE(x) UPDATE(x, 24, 24)
#define DSI2_SOFT_RESET 0x0010
#define SYS_RSTN BIT(2)
#define PHY_RSTN BIT(1)
#define IPI_RSTN BIT(0)
#define INT_ST_MAIN 0x0014
#define DSI2_MODE_CTRL 0x0018
#define DSI2_MODE_STATUS 0x001c
#define DSI2_CORE_STATUS 0x0020
#define PRI_RD_DATA_AVAIL BIT(26)
#define PRI_FIFOS_NOT_EMPTY BIT(25)
#define PRI_BUSY BIT(24)
#define CRI_RD_DATA_AVAIL BIT(18)
#define CRT_FIFOS_NOT_EMPTY BIT(17)
#define CRI_BUSY BIT(16)
#define IPI_FIFOS_NOT_EMPTY BIT(9)
#define IPI_BUSY BIT(8)
#define CORE_FIFOS_NOT_EMPTY BIT(1)
#define CORE_BUSY BIT(0)
#define MANUAL_MODE_CFG 0x0024
#define MANUAL_MODE_EN BIT(0)
#define DSI2_TIMEOUT_HSTX_CFG 0x0048
#define TO_HSTX(x) UPDATE(x, 15, 0)
#define DSI2_TIMEOUT_HSTXRDY_CFG 0x004c
#define TO_HSTXRDY(x) UPDATE(x, 15, 0)
#define DSI2_TIMEOUT_LPRX_CFG 0x0050
#define TO_LPRXRDY(x) UPDATE(x, 15, 0)
#define DSI2_TIMEOUT_LPTXRDY_CFG 0x0054
#define TO_LPTXRDY(x) UPDATE(x, 15, 0)
#define DSI2_TIMEOUT_LPTXTRIG_CFG 0x0058
#define TO_LPTXTRIG(x) UPDATE(x, 15, 0)
#define DSI2_TIMEOUT_LPTXULPS_CFG 0x005c
#define TO_LPTXULPS(x) UPDATE(x, 15, 0)
#define DSI2_TIMEOUT_BTA_CFG 0x60
#define TO_BTA(x) UPDATE(x, 15, 0)
#define DSI2_PHY_MODE_CFG 0x0100
#define PPI_WIDTH(x) UPDATE(x, 9, 8)
#define PHY_LANES(x) UPDATE(x - 1, 5, 4)
#define PHY_TYPE(x) UPDATE(x, 0, 0)
#define DSI2_PHY_CLK_CFG 0X0104
#define PHY_LPTX_CLK_DIV(x) UPDATE(x, 12, 8)
#define CLK_TYPE_MASK BIT(0)
#define NON_CONTINUOUS_CLK BIT(0)
#define CONTIUOUS_CLK 0
#define DSI2_PHY_LP2HS_MAN_CFG 0x010c
#define PHY_LP2HS_TIME(x) UPDATE(x, 28, 0)
#define DSI2_PHY_HS2LP_MAN_CFG 0x0114
#define PHY_HS2LP_TIME(x) UPDATE(x, 28, 0)
#define DSI2_PHY_MAX_RD_T_MAN_CFG 0x011c
#define PHY_MAX_RD_TIME(x) UPDATE(x, 26, 0)
#define DSI2_PHY_ESC_CMD_T_MAN_CFG 0x0124
#define PHY_ESC_CMD_TIME(x) UPDATE(x, 28, 0)
#define DSI2_PHY_ESC_BYTE_T_MAN_CFG 0x012c
#define PHY_ESC_BYTE_TIME(x) UPDATE(x, 28, 0)
#define DSI2_PHY_IPI_RATIO_MAN_CFG 0x0134
#define PHY_IPI_RATIO(x) UPDATE(x, 21, 0)
#define DSI2_PHY_SYS_RATIO_MAN_CFG 0x013C
#define PHY_SYS_RATIO(x) UPDATE(x, 16, 0)
#define DSI2_DSI_GENERAL_CFG 0x0200
#define BTA_EN BIT(1)
#define EOTP_TX_EN BIT(0)
#define DSI2_DSI_VCID_CFG 0x0204
#define TX_VCID(x) UPDATE(x, 1, 0)
#define DSI2_DSI_SCRAMBLING_CFG 0x0208
#define SCRAMBLING_SEED(x) UPDATE(x, 31, 16)
#define SCRAMBLING_EN BIT(0)
#define DSI2_DSI_VID_TX_CFG 0x020c
#define LPDT_DISPLAY_CMD_EN BIT(20)
#define BLK_VFP_HS_EN BIT(14)
#define BLK_VBP_HS_EN BIT(13)
#define BLK_VSA_HS_EN BIT(12)
#define BLK_HFP_HS_EN BIT(6)
#define BLK_HBP_HS_EN BIT(5)
#define BLK_HSA_HS_EN BIT(4)
#define VID_MODE_TYPE(x) UPDATE(x, 1, 0)
#define DSI2_CRI_TX_HDR 0x02c0
#define CMD_TX_MODE(x) UPDATE(x, 24, 24)
#define DSI2_CRI_TX_PLD 0x02c4
#define DSI2_CRI_RX_HDR 0x02c8
#define DSI2_CRI_RX_PLD 0x02cc
#define DSI2_IPI_COLOR_MAN_CFG 0x0300
#define IPI_DEPTH(x) UPDATE(x, 7, 4)
#define IPI_DEPTH_5_6_5_BITS 0x02
#define IPI_DEPTH_6_BITS 0x03
#define IPI_DEPTH_8_BITS 0x05
#define IPI_DEPTH_10_BITS 0x06
#define IPI_FORMAT(x) UPDATE(x, 3, 0)
#define IPI_FORMAT_RGB 0x0
#define IPI_FORMAT_DSC 0x0b
#define DSI2_IPI_VID_HSA_MAN_CFG 0x0304
#define VID_HSA_TIME(x) UPDATE(x, 29, 0)
#define DSI2_IPI_VID_HBP_MAN_CFG 0x030c
#define VID_HBP_TIME(x) UPDATE(x, 29, 0)
#define DSI2_IPI_VID_HACT_MAN_CFG 0x0314
#define VID_HACT_TIME(x) UPDATE(x, 29, 0)
#define DSI2_IPI_VID_HLINE_MAN_CFG 0x031c
#define VID_HLINE_TIME(x) UPDATE(x, 29, 0)
#define DSI2_IPI_VID_VSA_MAN_CFG 0x0324
#define VID_VSA_LINES(x) UPDATE(x, 9, 0)
#define DSI2_IPI_VID_VBP_MAN_CFG 0X032C
#define VID_VBP_LINES(x) UPDATE(x, 9, 0)
#define DSI2_IPI_VID_VACT_MAN_CFG 0X0334
#define VID_VACT_LINES(x) UPDATE(x, 13, 0)
#define DSI2_IPI_VID_VFP_MAN_CFG 0X033C
#define VID_VFP_LINES(x) UPDATE(x, 9, 0)
#define DSI2_IPI_PIX_PKT_CFG 0x0344
#define MAX_PIX_PKT(x) UPDATE(x, 15, 0)
#define DSI2_INT_ST_PHY 0x0400
#define DSI2_INT_MASK_PHY 0x0404
#define DSI2_INT_ST_TO 0x0410
#define DSI2_INT_MASK_TO 0x0414
#define DSI2_INT_ST_ACK 0x0420
#define DSI2_INT_MASK_ACK 0x0424
#define DSI2_INT_ST_IPI 0x0430
#define DSI2_INT_MASK_IPI 0x0434
#define DSI2_INT_ST_FIFO 0x0440
#define DSI2_INT_MASK_FIFO 0x0444
#define DSI2_INT_ST_PRI 0x0450
#define DSI2_INT_MASK_PRI 0x0454
#define DSI2_INT_ST_CRI 0x0460
#define DSI2_INT_MASK_CRI 0x0464
#define DSI2_INT_FORCE_CRI 0x0468
#define DSI2_MAX_REGISGER DSI2_INT_FORCE_CRI
#define MODE_STATUS_TIMEOUT_US 10000
#define CMD_PKT_STATUS_TIMEOUT_US 20000
#define PSEC_PER_SEC 1000000000000LL
#define GRF_REG_FIELD(reg, lsb, msb) (((reg) << 16) | ((lsb) << 8) | (msb))
enum vid_mode_type {
VID_MODE_TYPE_NON_BURST_SYNC_PULSES,
VID_MODE_TYPE_NON_BURST_SYNC_EVENTS,
VID_MODE_TYPE_BURST,
};
enum mode_ctrl {
IDLE_MODE,
AUTOCALC_MODE,
COMMAND_MODE,
VIDEO_MODE,
DATA_STREAM_MODE,
VIDE_TEST_MODE,
DATA_STREAM_TEST_MODE,
};
enum grf_reg_fields {
TXREQCLKHS_EN,
GATING_EN,
IPI_SHUTDN,
IPI_COLORM,
IPI_COLOR_DEPTH,
IPI_FORMAT,
MAX_FIELDS,
};
enum phy_type {
DPHY,
CPHY,
};
enum ppi_width {
PPI_WIDTH_8_BITS,
PPI_WIDTH_16_BITS,
PPI_WIDTH_32_BITS,
};
struct cmd_header {
u8 cmd_type;
u8 delay;
u8 payload_length;
};
struct dw_mipi_dsi2_plat_data {
const u32 *dsi0_grf_reg_fields;
const u32 *dsi1_grf_reg_fields;
unsigned long long dphy_max_bit_rate_per_lane;
unsigned long long cphy_max_symbol_rate_per_lane;
};
struct dw_mipi_dsi2 {
struct drm_device *drm_dev;
struct drm_encoder encoder;
struct drm_connector connector;
struct drm_bridge *bridge;
struct mipi_dsi_host host;
struct drm_panel *panel;
struct drm_display_mode mode;
struct device *dev;
struct device_node *client;
struct regmap *grf;
struct clk *pclk;
struct clk *sys_clk;
bool phy_enabled;
struct phy *dcphy;
union phy_configure_opts phy_opts;
bool c_option;
bool scrambling_en;
unsigned int slice_width;
unsigned int slice_height;
bool dsc_enable;
u8 version_major;
u8 version_minor;
struct drm_dsc_picture_parameter_set *pps;
struct regmap *regmap;
struct reset_control *apb_rst;
int irq;
int id;
/* dual-channel */
struct dw_mipi_dsi2 *master;
struct dw_mipi_dsi2 *slave;
bool data_swap;
unsigned int lane_hs_rate; /* Mbps or Msps per lane */
u32 channel;
u32 lanes;
u32 format;
unsigned long mode_flags;
const struct dw_mipi_dsi2_plat_data *pdata;
struct rockchip_drm_sub_dev sub_dev;
struct gpio_desc *te_gpio;
bool user_split_mode;
struct drm_property *user_split_mode_prop;
};
static inline struct dw_mipi_dsi2 *host_to_dsi2(struct mipi_dsi_host *host)
{
return container_of(host, struct dw_mipi_dsi2, host);
}
static inline struct dw_mipi_dsi2 *con_to_dsi2(struct drm_connector *con)
{
return container_of(con, struct dw_mipi_dsi2, connector);
}
static inline struct dw_mipi_dsi2 *encoder_to_dsi2(struct drm_encoder *encoder)
{
return container_of(encoder, struct dw_mipi_dsi2, encoder);
}
static void grf_field_write(struct dw_mipi_dsi2 *dsi2, enum grf_reg_fields index,
unsigned int val)
{
const u32 field = dsi2->id ?
dsi2->pdata->dsi1_grf_reg_fields[index] :
dsi2->pdata->dsi0_grf_reg_fields[index];
u16 reg;
u8 msb, lsb;
if (!field)
return;
reg = (field >> 16) & 0xffff;
lsb = (field >> 8) & 0xff;
msb = (field >> 0) & 0xff;
regmap_write(dsi2->grf, reg, (val << lsb) | (GENMASK(msb, lsb) << 16));
}
static int cri_fifos_wait_avail(struct dw_mipi_dsi2 *dsi2)
{
u32 sts, mask;
int ret;
mask = CRI_BUSY | CRT_FIFOS_NOT_EMPTY;
ret = regmap_read_poll_timeout(dsi2->regmap, DSI2_CORE_STATUS, sts,
!(sts & mask), 0,
CMD_PKT_STATUS_TIMEOUT_US);
if (ret < 0) {
DRM_DEV_ERROR(dsi2->dev, "command interface is busy\n");
return ret;
}
return 0;
}
static void dw_mipi_dsi2_irq_enable(struct dw_mipi_dsi2 *dsi2, bool enable)
{
if (enable) {
regmap_write(dsi2->regmap, DSI2_INT_MASK_PHY, 0x1);
regmap_write(dsi2->regmap, DSI2_INT_MASK_TO, 0xf);
regmap_write(dsi2->regmap, DSI2_INT_MASK_ACK, 0x1);
regmap_write(dsi2->regmap, DSI2_INT_MASK_IPI, 0x1);
regmap_write(dsi2->regmap, DSI2_INT_MASK_FIFO, 0x1);
regmap_write(dsi2->regmap, DSI2_INT_MASK_PRI, 0x1);
regmap_write(dsi2->regmap, DSI2_INT_MASK_CRI, 0x1);
} else {
regmap_write(dsi2->regmap, DSI2_INT_MASK_PHY, 0x0);
regmap_write(dsi2->regmap, DSI2_INT_MASK_TO, 0x0);
regmap_write(dsi2->regmap, DSI2_INT_MASK_ACK, 0x0);
regmap_write(dsi2->regmap, DSI2_INT_MASK_IPI, 0x0);
regmap_write(dsi2->regmap, DSI2_INT_MASK_FIFO, 0x0);
regmap_write(dsi2->regmap, DSI2_INT_MASK_PRI, 0x0);
regmap_write(dsi2->regmap, DSI2_INT_MASK_CRI, 0x0);
};
}
static void mipi_dcphy_power_on(struct dw_mipi_dsi2 *dsi2)
{
if (dsi2->phy_enabled)
return;
if (dsi2->dcphy)
phy_power_on(dsi2->dcphy);
dsi2->phy_enabled = true;
}
static void mipi_dcphy_power_off(struct dw_mipi_dsi2 *dsi2)
{
if (!dsi2->phy_enabled)
return;
if (dsi2->dcphy)
phy_power_off(dsi2->dcphy);
dsi2->phy_enabled = false;
}
static void dw_mipi_dsi2_set_vid_mode(struct dw_mipi_dsi2 *dsi2)
{
u32 val = 0, mode;
int ret;
if (dsi2->mode_flags & MIPI_DSI_MODE_VIDEO_HFP)
val |= BLK_HFP_HS_EN;
if (dsi2->mode_flags & MIPI_DSI_MODE_VIDEO_HBP)
val |= BLK_HBP_HS_EN;
if (dsi2->mode_flags & MIPI_DSI_MODE_VIDEO_HSA)
val |= BLK_HSA_HS_EN;
if (dsi2->mode_flags & MIPI_DSI_MODE_VIDEO_BURST)
val |= VID_MODE_TYPE_BURST;
else if (dsi2->mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE)
val |= VID_MODE_TYPE_NON_BURST_SYNC_PULSES;
else
val |= VID_MODE_TYPE_NON_BURST_SYNC_EVENTS;
regmap_write(dsi2->regmap, DSI2_DSI_VID_TX_CFG, val);
regmap_write(dsi2->regmap, DSI2_MODE_CTRL, VIDEO_MODE);
ret = regmap_read_poll_timeout(dsi2->regmap, DSI2_MODE_STATUS,
mode, mode & VIDEO_MODE,
1000, MODE_STATUS_TIMEOUT_US);
if (ret < 0)
dev_err(dsi2->dev, "failed to enter video mode\n");
}
static void dw_mipi_dsi2_set_data_stream_mode(struct dw_mipi_dsi2 *dsi2)
{
u32 mode;
int ret;
regmap_write(dsi2->regmap, DSI2_MODE_CTRL, DATA_STREAM_MODE);
ret = regmap_read_poll_timeout(dsi2->regmap, DSI2_MODE_STATUS,
mode, mode & DATA_STREAM_MODE,
1000, MODE_STATUS_TIMEOUT_US);
if (ret < 0)
dev_err(dsi2->dev, "failed to enter data stream mode\n");
}
static void dw_mipi_dsi2_set_cmd_mode(struct dw_mipi_dsi2 *dsi2)
{
u32 mode;
int ret;
regmap_write(dsi2->regmap, DSI2_MODE_CTRL, COMMAND_MODE);
ret = regmap_read_poll_timeout(dsi2->regmap, DSI2_MODE_STATUS,
mode, mode & COMMAND_MODE,
1000, MODE_STATUS_TIMEOUT_US);
if (ret < 0)
dev_err(dsi2->dev, "failed to enter data stream mode\n");
}
static void dw_mipi_dsi2_disable(struct dw_mipi_dsi2 *dsi2)
{
regmap_write(dsi2->regmap, DSI2_IPI_PIX_PKT_CFG, 0);
dw_mipi_dsi2_set_cmd_mode(dsi2);
if (dsi2->slave)
dw_mipi_dsi2_disable(dsi2->slave);
}
static void dw_mipi_dsi2_post_disable(struct dw_mipi_dsi2 *dsi2)
{
dw_mipi_dsi2_irq_enable(dsi2, 0);
regmap_write(dsi2->regmap, DSI2_PWR_UP, RESET);
mipi_dcphy_power_off(dsi2);
pm_runtime_put(dsi2->dev);
if (dsi2->slave)
dw_mipi_dsi2_post_disable(dsi2->slave);
}
static void dw_mipi_dsi2_encoder_disable(struct drm_encoder *encoder)
{
struct dw_mipi_dsi2 *dsi2 = encoder_to_dsi2(encoder);
struct drm_crtc *crtc = encoder->crtc;
struct rockchip_crtc_state *s = to_rockchip_crtc_state(crtc->state);
if (dsi2->panel)
drm_panel_disable(dsi2->panel);
if (!(dsi2->mode_flags & MIPI_DSI_MODE_VIDEO))
rockchip_drm_crtc_standby(encoder->crtc, 1);
dw_mipi_dsi2_disable(dsi2);
if (!(dsi2->mode_flags & MIPI_DSI_MODE_VIDEO))
rockchip_drm_crtc_standby(encoder->crtc, 0);
if (dsi2->panel)
drm_panel_unprepare(dsi2->panel);
dw_mipi_dsi2_post_disable(dsi2);
if (!crtc->state->active_changed)
return;
s->output_if &= ~(dsi2->id ? VOP_OUTPUT_IF_MIPI1 : VOP_OUTPUT_IF_MIPI0);
}
static void dw_mipi_dsi2_get_lane_rate(struct dw_mipi_dsi2 *dsi2)
{
struct device *dev = dsi2->dev;
const struct drm_display_mode *mode = &dsi2->mode;
u64 max_lane_rate;
u64 lane_rate, target_pclk;
u32 value;
int bpp, lanes;
u64 tmp;
max_lane_rate = (dsi2->c_option) ?
dsi2->pdata->cphy_max_symbol_rate_per_lane :
dsi2->pdata->dphy_max_bit_rate_per_lane;
lanes = (dsi2->slave || dsi2->master) ? dsi2->lanes * 2 : dsi2->lanes;
bpp = mipi_dsi_pixel_format_to_bpp(dsi2->format);
if (bpp < 0)
bpp = 24;
/*
* optional override of the desired bandwidth
* High-Speed mode: Differential and terminated: 80Mbps ~ 4500 Mbps.
*/
if (!of_property_read_u32(dev->of_node, "rockchip,lane-rate", &value)) {
if (value >= 80000 && value <= 4500000)
lane_rate = value * MSEC_PER_SEC;
else if (value >= 80 && value <= 4500)
lane_rate = value * USEC_PER_SEC;
else
lane_rate = 80 * USEC_PER_SEC;
} else {
tmp = (u64)mode->crtc_clock * 1000 * bpp;
do_div(tmp, lanes);
/*
* Multiple bits are encoded into each symbol epoch,
* the data rate is ~2.28x the symbol rate.
*/
if (dsi2->c_option)
tmp = DIV_ROUND_CLOSEST_ULL(tmp * 100, 228);
/* set BW a little larger only in video burst mode in
* consideration of the protocol overhead and HS mode
* switching to BLLP mode, take 1 / 0.9, since Mbps must
* big than bandwidth of RGB
*/
if (dsi2->mode_flags & MIPI_DSI_MODE_VIDEO_BURST) {
tmp *= 10;
do_div(tmp, 9);
}
if (tmp > max_lane_rate)
lane_rate = max_lane_rate;
else
lane_rate = tmp;
}
target_pclk = DIV_ROUND_CLOSEST_ULL(lane_rate * lanes, bpp);
phy_mipi_dphy_get_default_config(target_pclk, bpp, lanes,
&dsi2->phy_opts.mipi_dphy);
if (dsi2->slave)
phy_mipi_dphy_get_default_config(target_pclk, bpp, lanes,
&dsi2->slave->phy_opts.mipi_dphy);
}
static void dw_mipi_dsi2_set_lane_rate(struct dw_mipi_dsi2 *dsi2)
{
unsigned long hs_clk_rate;
if (dsi2->dcphy)
if (!dsi2->c_option)
phy_set_mode(dsi2->dcphy, PHY_MODE_MIPI_DPHY);
phy_configure(dsi2->dcphy, &dsi2->phy_opts);
hs_clk_rate = dsi2->phy_opts.mipi_dphy.hs_clk_rate;
dsi2->lane_hs_rate = DIV_ROUND_UP(hs_clk_rate, MSEC_PER_SEC);
}
static void dw_mipi_dsi2_host_softrst(struct dw_mipi_dsi2 *dsi2)
{
if (dsi2->apb_rst) {
reset_control_assert(dsi2->apb_rst);
usleep_range(10, 20);
reset_control_deassert(dsi2->apb_rst);
}
regmap_write(dsi2->regmap, DSI2_SOFT_RESET, 0x0);
udelay(100);
regmap_write(dsi2->regmap, DSI2_SOFT_RESET,
SYS_RSTN | PHY_RSTN | IPI_RSTN);
}
static void dw_mipi_dsi2_phy_mode_cfg(struct dw_mipi_dsi2 *dsi2)
{
u32 val = 0;
/* PPI width is fixed to 16 bits in DCPHY */
val |= PPI_WIDTH(PPI_WIDTH_16_BITS) | PHY_LANES(dsi2->lanes);
val |= PHY_TYPE(dsi2->c_option ? CPHY : DPHY);
regmap_write(dsi2->regmap, DSI2_PHY_MODE_CFG, val);
}
static void dw_mipi_dsi2_phy_clk_mode_cfg(struct dw_mipi_dsi2 *dsi2)
{
u32 sys_clk, esc_clk_div;
u32 val = 0;
/*
* clk_type should be NON_CONTINUOUS_CLK before
* initial deskew calibration be sent.
*/
val |= NON_CONTINUOUS_CLK;
/* The Escape clock ranges from 1MHz to 20MHz. */
sys_clk = clk_get_rate(dsi2->sys_clk) / USEC_PER_SEC;
esc_clk_div = DIV_ROUND_UP(sys_clk, 10 * 2);
val |= PHY_LPTX_CLK_DIV(esc_clk_div);
regmap_write(dsi2->regmap, DSI2_PHY_CLK_CFG, val);
}
static void dw_mipi_dsi2_phy_ratio_cfg(struct dw_mipi_dsi2 *dsi2)
{
struct drm_display_mode *mode = &dsi2->mode;
u64 sys_clk = clk_get_rate(dsi2->sys_clk);
u64 pixel_clk, ipi_clk, phy_hsclk;
u64 tmp;
/*
* in DPHY mode, the phy_hstx_clk is exactly 1/16 the Lane high-speed
* data rate; In CPHY mode, the phy_hstx_clk is exactly 1/7 the trio
* high speed symbol rate.
*/
if (dsi2->c_option)
phy_hsclk = DIV_ROUND_CLOSEST_ULL(dsi2->lane_hs_rate * MSEC_PER_SEC, 7);
else
phy_hsclk = DIV_ROUND_CLOSEST_ULL(dsi2->lane_hs_rate * MSEC_PER_SEC, 16);
/* IPI_RATIO_MAN_CFG = PHY_HSTX_CLK / IPI_CLK */
pixel_clk = mode->crtc_clock * MSEC_PER_SEC;
ipi_clk = pixel_clk / 4;
tmp = DIV_ROUND_CLOSEST_ULL(phy_hsclk << 16, ipi_clk);
regmap_write(dsi2->regmap, DSI2_PHY_IPI_RATIO_MAN_CFG,
PHY_IPI_RATIO(tmp));
/*
* SYS_RATIO_MAN_CFG = MIPI_DCPHY_HSCLK_Freq / MIPI_DCPHY_HSCLK_Freq
*/
tmp = DIV_ROUND_CLOSEST_ULL(phy_hsclk << 16, sys_clk);
regmap_write(dsi2->regmap, DSI2_PHY_SYS_RATIO_MAN_CFG,
PHY_SYS_RATIO(tmp));
}
static void dw_mipi_dsi2_lp2hs_or_hs2lp_cfg(struct dw_mipi_dsi2 *dsi2)
{
struct phy_configure_opts_mipi_dphy *cfg = &dsi2->phy_opts.mipi_dphy;
unsigned long long tmp, ui;
unsigned long long hstx_clk;
hstx_clk = DIV_ROUND_CLOSEST_ULL(dsi2->lane_hs_rate * MSEC_PER_SEC, 16);
ui = ALIGN(PSEC_PER_SEC, hstx_clk);
do_div(ui, hstx_clk);
/* PHY_LP2HS_TIME = (TLPX + THS-PREPARE + THS-ZERO) / Tphy_hstx_clk */
tmp = cfg->lpx + cfg->hs_prepare + cfg->hs_zero;
tmp = DIV_ROUND_CLOSEST_ULL(tmp << 16, ui);
regmap_write(dsi2->regmap, DSI2_PHY_LP2HS_MAN_CFG, PHY_LP2HS_TIME(tmp));
/* PHY_HS2LP_TIME = (THS-TRAIL + THS-EXIT) / Tphy_hstx_clk */
tmp = cfg->hs_trail + cfg->hs_exit;
tmp = DIV_ROUND_CLOSEST_ULL(tmp << 16, ui);
regmap_write(dsi2->regmap, DSI2_PHY_HS2LP_MAN_CFG, PHY_HS2LP_TIME(tmp));
}
static void dw_mipi_dsi2_phy_init(struct dw_mipi_dsi2 *dsi2)
{
dw_mipi_dsi2_phy_mode_cfg(dsi2);
dw_mipi_dsi2_phy_clk_mode_cfg(dsi2);
dw_mipi_dsi2_phy_ratio_cfg(dsi2);
dw_mipi_dsi2_lp2hs_or_hs2lp_cfg(dsi2);
/* phy configuration 8 - 10 */
}
static void dw_mipi_dsi2_tx_option_set(struct dw_mipi_dsi2 *dsi2)
{
u32 val;
val = BTA_EN | EOTP_TX_EN;
if (dsi2->mode_flags & MIPI_DSI_MODE_EOT_PACKET)
val &= ~EOTP_TX_EN;
regmap_write(dsi2->regmap, DSI2_DSI_GENERAL_CFG, val);
regmap_write(dsi2->regmap, DSI2_DSI_VCID_CFG, TX_VCID(dsi2->channel));
if (dsi2->scrambling_en)
regmap_write(dsi2->regmap, DSI2_DSI_SCRAMBLING_CFG,
SCRAMBLING_EN);
}
static void dw_mipi_dsi2_ipi_color_coding_cfg(struct dw_mipi_dsi2 *dsi2)
{
u32 val, color_depth;
switch (dsi2->format) {
case MIPI_DSI_FMT_RGB666:
case MIPI_DSI_FMT_RGB666_PACKED:
color_depth = IPI_DEPTH_6_BITS;
break;
case MIPI_DSI_FMT_RGB565:
color_depth = IPI_DEPTH_5_6_5_BITS;
break;
case MIPI_DSI_FMT_RGB888:
default:
color_depth = IPI_DEPTH_8_BITS;
break;
}
val = IPI_DEPTH(color_depth) |
IPI_FORMAT(dsi2->dsc_enable ? IPI_FORMAT_DSC : IPI_FORMAT_RGB);
regmap_write(dsi2->regmap, DSI2_IPI_COLOR_MAN_CFG, val);
grf_field_write(dsi2, IPI_COLOR_DEPTH, color_depth);
if (dsi2->dsc_enable)
grf_field_write(dsi2, IPI_FORMAT, IPI_FORMAT_DSC);
}
static void dw_mipi_dsi2_ipi_set(struct dw_mipi_dsi2 *dsi2)
{
struct drm_display_mode *mode = &dsi2->mode;
u32 hline, hsa, hbp, hact;
u64 hline_time, hsa_time, hbp_time, hact_time, tmp;
u64 pixel_clk, phy_hs_clk;
u32 vact, vsa, vfp, vbp;
u16 val;
if (dsi2->slave || dsi2->master)
val = mode->hdisplay / 2;
else
val = mode->hdisplay;
regmap_write(dsi2->regmap, DSI2_IPI_PIX_PKT_CFG, MAX_PIX_PKT(val));
dw_mipi_dsi2_ipi_color_coding_cfg(dsi2);
/*
* if the controller is intended to operate in data stream mode,
* no more steps are required.
*/
if (!(dsi2->mode_flags & MIPI_DSI_MODE_VIDEO))
return;
vact = mode->vdisplay;
vsa = mode->vsync_end - mode->vsync_start;
vfp = mode->vsync_start - mode->vdisplay;
vbp = mode->vtotal - mode->vsync_end;
hact = mode->hdisplay;
hsa = mode->hsync_end - mode->hsync_start;
hbp = mode->htotal - mode->hsync_end;
hline = mode->htotal;
pixel_clk = mode->crtc_clock * MSEC_PER_SEC;
if (dsi2->c_option)
phy_hs_clk = DIV_ROUND_CLOSEST_ULL(dsi2->lane_hs_rate * MSEC_PER_SEC, 7);
else
phy_hs_clk = DIV_ROUND_CLOSEST_ULL(dsi2->lane_hs_rate * MSEC_PER_SEC, 16);
tmp = hsa * phy_hs_clk;
hsa_time = DIV_ROUND_CLOSEST_ULL(tmp << 16, pixel_clk);
regmap_write(dsi2->regmap, DSI2_IPI_VID_HSA_MAN_CFG,
VID_HSA_TIME(hsa_time));
tmp = hbp * phy_hs_clk;
hbp_time = DIV_ROUND_CLOSEST_ULL(tmp << 16, pixel_clk);
regmap_write(dsi2->regmap, DSI2_IPI_VID_HBP_MAN_CFG,
VID_HBP_TIME(hbp_time));
tmp = hact * phy_hs_clk;
hact_time = DIV_ROUND_CLOSEST_ULL(tmp << 16, pixel_clk);
regmap_write(dsi2->regmap, DSI2_IPI_VID_HACT_MAN_CFG,
VID_HACT_TIME(hact_time));
tmp = hline * phy_hs_clk;
hline_time = DIV_ROUND_CLOSEST_ULL(tmp << 16, pixel_clk);
regmap_write(dsi2->regmap, DSI2_IPI_VID_HLINE_MAN_CFG,
VID_HLINE_TIME(hline_time));
regmap_write(dsi2->regmap, DSI2_IPI_VID_VSA_MAN_CFG,
VID_VSA_LINES(vsa));
regmap_write(dsi2->regmap, DSI2_IPI_VID_VBP_MAN_CFG,
VID_VBP_LINES(vbp));
regmap_write(dsi2->regmap, DSI2_IPI_VID_VACT_MAN_CFG,
VID_VACT_LINES(vact));
regmap_write(dsi2->regmap, DSI2_IPI_VID_VFP_MAN_CFG,
VID_VFP_LINES(vfp));
}
static void
dw_mipi_dsi2_work_mode(struct dw_mipi_dsi2 *dsi2, u32 mode)
{
/*
* select controller work in Manual mode
* Manual: MANUAL_MODE_EN
* Automatic: 0
*/
regmap_write(dsi2->regmap, MANUAL_MODE_CFG, mode);
}
static void dw_mipi_dsi2_pre_enable(struct dw_mipi_dsi2 *dsi2)
{
pm_runtime_get_sync(dsi2->dev);
dw_mipi_dsi2_host_softrst(dsi2);
regmap_write(dsi2->regmap, DSI2_PWR_UP, RESET);
/* there may be some timeout registers may be configured if desired */
dw_mipi_dsi2_work_mode(dsi2, MANUAL_MODE_EN);
dw_mipi_dsi2_phy_init(dsi2);
dw_mipi_dsi2_tx_option_set(dsi2);
dw_mipi_dsi2_irq_enable(dsi2, 1);
mipi_dcphy_power_on(dsi2);
/*
* initial deskew calibration is send after phy_power_on,
* then we can configure clk_type.
*/
if (!(dsi2->mode_flags & MIPI_DSI_CLOCK_NON_CONTINUOUS))
regmap_update_bits(dsi2->regmap, DSI2_PHY_CLK_CFG,
CLK_TYPE_MASK, CONTIUOUS_CLK);
regmap_write(dsi2->regmap, DSI2_PWR_UP, POWER_UP);
dw_mipi_dsi2_set_cmd_mode(dsi2);
if (dsi2->slave)
dw_mipi_dsi2_pre_enable(dsi2->slave);
}
static void dw_mipi_dsi2_enable(struct dw_mipi_dsi2 *dsi2)
{
dw_mipi_dsi2_ipi_set(dsi2);
if (dsi2->mode_flags & MIPI_DSI_MODE_VIDEO)
dw_mipi_dsi2_set_vid_mode(dsi2);
else
dw_mipi_dsi2_set_data_stream_mode(dsi2);
if (dsi2->slave)
dw_mipi_dsi2_enable(dsi2->slave);
}
static void dw_mipi_dsi2_encoder_enable(struct drm_encoder *encoder)
{
struct dw_mipi_dsi2 *dsi2 = encoder_to_dsi2(encoder);
dw_mipi_dsi2_get_lane_rate(dsi2);
if (dsi2->dcphy)
dw_mipi_dsi2_set_lane_rate(dsi2);
if (dsi2->slave && dsi2->slave->dcphy)
dw_mipi_dsi2_set_lane_rate(dsi2->slave);
dw_mipi_dsi2_pre_enable(dsi2);
if (dsi2->panel)
drm_panel_prepare(dsi2->panel);
dw_mipi_dsi2_enable(dsi2);
if (dsi2->panel)
drm_panel_enable(dsi2->panel);
DRM_DEV_INFO(dsi2->dev, "final DSI-Link bandwidth: %u x %d %s\n",
dsi2->lane_hs_rate,
dsi2->slave ? dsi2->lanes * 2 : dsi2->lanes,
dsi2->c_option ? "Ksps" : "Kbps");
}
static int
dw_mipi_dsi2_encoder_atomic_check(struct drm_encoder *encoder,
struct drm_crtc_state *crtc_state,
struct drm_connector_state *conn_state)
{
struct rockchip_crtc_state *s = to_rockchip_crtc_state(crtc_state);
struct dw_mipi_dsi2 *dsi2 = encoder_to_dsi2(encoder);
struct drm_connector *connector = conn_state->connector;
struct drm_display_info *info = &connector->display_info;
switch (dsi2->format) {
case MIPI_DSI_FMT_RGB888:
s->output_mode = ROCKCHIP_OUT_MODE_P888;
break;
case MIPI_DSI_FMT_RGB666:
s->output_mode = ROCKCHIP_OUT_MODE_P666;
break;
case MIPI_DSI_FMT_RGB565:
s->output_mode = ROCKCHIP_OUT_MODE_P565;
break;
default:
WARN_ON(1);
return -EINVAL;
}
if (info->num_bus_formats)
s->bus_format = info->bus_formats[0];
else
s->bus_format = MEDIA_BUS_FMT_RGB888_1X24;
s->output_type = DRM_MODE_CONNECTOR_DSI;
s->output_if |= dsi2->id ? VOP_OUTPUT_IF_MIPI1 : VOP_OUTPUT_IF_MIPI0;
s->bus_flags = info->bus_flags;
s->tv_state = &conn_state->tv;
s->color_space = V4L2_COLORSPACE_DEFAULT;
if (!(dsi2->mode_flags & MIPI_DSI_MODE_VIDEO)) {
s->output_flags |= ROCKCHIP_OUTPUT_MIPI_DS_MODE;
s->soft_te = dsi2->te_gpio ? true : false;
s->hold_mode = true;
}
if (dsi2->slave) {
s->output_flags |= ROCKCHIP_OUTPUT_DUAL_CHANNEL_LEFT_RIGHT_MODE;
if (dsi2->data_swap)
s->output_flags |= ROCKCHIP_OUTPUT_DATA_SWAP;
s->output_if |= VOP_OUTPUT_IF_MIPI1;
}
if (dsi2->dsc_enable) {
s->dsc_enable = 1;
s->dsc_sink_cap.version_major = dsi2->version_major;
s->dsc_sink_cap.version_minor = dsi2->version_minor;
s->dsc_sink_cap.slice_width = dsi2->slice_width;
s->dsc_sink_cap.slice_height = dsi2->slice_height;
/* only can support rgb888 panel now */
s->dsc_sink_cap.target_bits_per_pixel_x16 = 8 << 4;
s->dsc_sink_cap.native_420 = 0;
memcpy(&s->pps, dsi2->pps, sizeof(struct drm_dsc_picture_parameter_set));
}
return 0;
}
static void
dw_mipi_dsi2_encoder_atomic_mode_set(struct drm_encoder *encoder,
struct drm_crtc_state *crtc_state,
struct drm_connector_state *connector_state)
{
struct dw_mipi_dsi2 *dsi2 = encoder_to_dsi2(encoder);
drm_mode_copy(&dsi2->mode, &crtc_state->adjusted_mode);
if (dsi2->slave)
drm_mode_copy(&dsi2->slave->mode, &crtc_state->adjusted_mode);
}
static void dw_mipi_dsi2_loader_protect(struct dw_mipi_dsi2 *dsi2, bool on)
{
if (on) {
pm_runtime_get_sync(dsi2->dev);
phy_init(dsi2->dcphy);
dsi2->phy_enabled = true;
if (dsi2->dcphy)
dsi2->dcphy->power_count++;
} else {
pm_runtime_put(dsi2->dev);
phy_exit(dsi2->dcphy);
dsi2->phy_enabled = false;
if (dsi2->dcphy)
dsi2->dcphy->power_count--;
}
if (dsi2->slave)
dw_mipi_dsi2_loader_protect(dsi2->slave, on);
}
static int dw_mipi_dsi2_encoder_loader_protect(struct drm_encoder *encoder,
bool on)
{
struct dw_mipi_dsi2 *dsi2 = encoder_to_dsi2(encoder);
if (dsi2->panel)
panel_simple_loader_protect(dsi2->panel);
dw_mipi_dsi2_loader_protect(dsi2, on);
return 0;
}
static const struct drm_encoder_helper_funcs
dw_mipi_dsi2_encoder_helper_funcs = {
.enable = dw_mipi_dsi2_encoder_enable,
.disable = dw_mipi_dsi2_encoder_disable,
.atomic_check = dw_mipi_dsi2_encoder_atomic_check,
.atomic_mode_set = dw_mipi_dsi2_encoder_atomic_mode_set,
};
static int dw_mipi_dsi2_connector_get_modes(struct drm_connector *connector)
{
struct dw_mipi_dsi2 *dsi2 = con_to_dsi2(connector);
if (dsi2->bridge && (dsi2->bridge->ops & DRM_BRIDGE_OP_MODES))
return drm_bridge_get_modes(dsi2->bridge, connector);
if (dsi2->panel)
return drm_panel_get_modes(dsi2->panel, connector);
return -EINVAL;
}
static enum drm_mode_status
dw_mipi_dsi2_connector_mode_valid(struct drm_connector *connector,
struct drm_display_mode *mode)
{
struct videomode vm;
drm_display_mode_to_videomode(mode, &vm);
/*
* the minimum region size (HSA,HBP,HACT,HFP) is 4 pixels
* which is the ip known issues and limitations.
*/
if (!(vm.hsync_len < 4 || vm.hback_porch < 4 ||
vm.hfront_porch < 4 || vm.hactive < 4))
return MODE_OK;
if (vm.hsync_len < 4)
vm.hsync_len = 4;
if (vm.hback_porch < 4)
vm.hback_porch = 4;
if (vm.hfront_porch < 4)
vm.hfront_porch = 4;
if (vm.hactive < 4)
vm.hactive = 4;
drm_display_mode_from_videomode(&vm, mode);
return MODE_OK;
}
static struct drm_connector_helper_funcs dw_mipi_dsi2_connector_helper_funcs = {
.get_modes = dw_mipi_dsi2_connector_get_modes,
.mode_valid = dw_mipi_dsi2_connector_mode_valid,
};
static enum drm_connector_status
dw_mipi_dsi2_connector_detect(struct drm_connector *connector, bool force)
{
struct dw_mipi_dsi2 *dsi2 = con_to_dsi2(connector);
if (dsi2->bridge && (dsi2->bridge->ops & DRM_BRIDGE_OP_DETECT))
return drm_bridge_detect(dsi2->bridge);
return connector_status_connected;
}
static void dw_mipi_dsi2_drm_connector_destroy(struct drm_connector *connector)
{
drm_connector_unregister(connector);
drm_connector_cleanup(connector);
}
static const struct drm_connector_funcs dw_mipi_dsi2_atomic_connector_funcs = {
.fill_modes = drm_helper_probe_single_connector_modes,
.detect = dw_mipi_dsi2_connector_detect,
.destroy = dw_mipi_dsi2_drm_connector_destroy,
.reset = drm_atomic_helper_connector_reset,
.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
};
static int dw_mipi_dsi2_dual_channel_probe(struct dw_mipi_dsi2 *dsi2)
{
struct device_node *np;
struct platform_device *secondary;
np = of_parse_phandle(dsi2->dev->of_node, "rockchip,dual-channel", 0);
if (np) {
dsi2->data_swap = of_property_read_bool(dsi2->dev->of_node,
"rockchip,data-swap");
secondary = of_find_device_by_node(np);
dsi2->slave = platform_get_drvdata(secondary);
of_node_put(np);
if (!dsi2->slave)
return -EPROBE_DEFER;
dsi2->slave->master = dsi2;
dsi2->lanes /= 2;
dsi2->slave->lanes = dsi2->lanes;
dsi2->slave->channel = dsi2->channel;
dsi2->slave->format = dsi2->format;
dsi2->slave->mode_flags = dsi2->mode_flags;
}
return 0;
}
static irqreturn_t dw_mipi_dsi2_te_irq_handler(int irq, void *dev_id)
{
struct dw_mipi_dsi2 *dsi2 = (struct dw_mipi_dsi2 *)dev_id;
struct drm_encoder *encoder = &dsi2->encoder;
if (encoder->crtc)
rockchip_drm_te_handle(encoder->crtc);
return IRQ_HANDLED;
}
static int dw_mipi_dsi2_get_dsc_params_from_sink(struct dw_mipi_dsi2 *dsi2,
struct drm_panel *panel,
struct drm_bridge *bridge)
{
struct drm_dsc_picture_parameter_set *pps = NULL;
struct device_node *np = NULL;
struct cmd_header *header;
const void *data;
char *d;
uint8_t *dsc_packed_pps;
int len;
if (!panel && !bridge)
return -ENODEV;
if (panel)
np = panel->dev->of_node;
else
np = bridge->of_node;
dsi2->c_option = of_property_read_bool(np, "phy-c-option");
dsi2->scrambling_en = of_property_read_bool(np, "scrambling-enable");
dsi2->dsc_enable = of_property_read_bool(np, "compressed-data");
if (dsi2->slave) {
dsi2->slave->c_option = dsi2->c_option;
dsi2->slave->scrambling_en = dsi2->scrambling_en;
dsi2->slave->dsc_enable = dsi2->dsc_enable;
}
of_property_read_u32(np, "slice-width", &dsi2->slice_width);
of_property_read_u32(np, "slice-height", &dsi2->slice_height);
of_property_read_u8(np, "version-major", &dsi2->version_major);
of_property_read_u8(np, "version-minor", &dsi2->version_minor);
data = of_get_property(np, "panel-init-sequence", &len);
if (!data)
return -EINVAL;
d = devm_kmemdup(dsi2->dev, data, len, GFP_KERNEL);
if (!d)
return -ENOMEM;
while (len > sizeof(*header)) {
header = (struct cmd_header *)d;
d += sizeof(*header);
len -= sizeof(*header);
if (header->payload_length > len)
return -EINVAL;
if (header->cmd_type == MIPI_DSI_PICTURE_PARAMETER_SET) {
dsc_packed_pps = devm_kmemdup(dsi2->dev, d,
header->payload_length, GFP_KERNEL);
if (!dsc_packed_pps)
return -ENOMEM;
pps = (struct drm_dsc_picture_parameter_set *)dsc_packed_pps;
break;
}
d += header->payload_length;
len -= header->payload_length;
}
dsi2->pps = pps;
return 0;
}
static int dw_mipi_dsi2_connector_init(struct dw_mipi_dsi2 *dsi2)
{
struct drm_encoder *encoder = &dsi2->encoder;
struct drm_connector *connector = &dsi2->connector;
struct drm_device *drm_dev = dsi2->drm_dev;
struct device *dev = dsi2->dev;
int ret;
ret = drm_connector_init(drm_dev, connector,
&dw_mipi_dsi2_atomic_connector_funcs,
DRM_MODE_CONNECTOR_DSI);
if (ret) {
DRM_DEV_ERROR(dev, "Failed to initialize connector\n");
return ret;
}
drm_connector_helper_add(connector,
&dw_mipi_dsi2_connector_helper_funcs);
ret = drm_connector_attach_encoder(connector, encoder);
if (ret < 0) {
DRM_DEV_ERROR(dev, "Failed to attach encoder: %d\n", ret);
goto connector_cleanup;
}
return 0;
connector_cleanup:
connector->funcs->destroy(connector);
return ret;
}
static int dw_mipi_dsi2_register_sub_dev(struct dw_mipi_dsi2 *dsi2,
struct drm_connector *connector)
{
struct device *dev = dsi2->dev;
struct drm_property *prop;
int ret;
prop = drm_property_create_bool(dsi2->drm_dev, DRM_MODE_PROP_IMMUTABLE,
"USER_SPLIT_MODE");
if (!prop) {
ret = -EINVAL;
DRM_DEV_ERROR(dev, "create user split mode prop failed\n");
goto connector_cleanup;
}
dsi2->user_split_mode_prop = prop;
drm_object_attach_property(&connector->base,
dsi2->user_split_mode_prop,
dsi2->user_split_mode ? 1 : 0);
dsi2->sub_dev.connector = connector;
dsi2->sub_dev.of_node = dev->of_node;
dsi2->sub_dev.loader_protect = dw_mipi_dsi2_encoder_loader_protect;
rockchip_drm_register_sub_dev(&dsi2->sub_dev);
return 0;
connector_cleanup:
connector->funcs->destroy(connector);
return ret;
}
static int dw_mipi_dsi2_bind(struct device *dev, struct device *master,
void *data)
{
struct dw_mipi_dsi2 *dsi2 = dev_get_drvdata(dev);
struct drm_device *drm_dev = data;
struct drm_encoder *encoder = &dsi2->encoder;
struct device_node *of_node = dsi2->dev->of_node;
struct drm_connector *connector = NULL;
enum drm_bridge_attach_flags flags;
int ret;
dsi2->drm_dev = drm_dev;
ret = dw_mipi_dsi2_dual_channel_probe(dsi2);
if (ret)
return ret;
if (dsi2->master)
return 0;
ret = drm_of_find_panel_or_bridge(dev->of_node, 1, -1,
&dsi2->panel, &dsi2->bridge);
if (ret) {
DRM_DEV_ERROR(dev, "Failed to find panel or bridge: %d\n", ret);
return ret;
}
dw_mipi_dsi2_get_dsc_params_from_sink(dsi2, dsi2->panel, dsi2->bridge);
encoder->possible_crtcs = rockchip_drm_of_find_possible_crtcs(drm_dev,
of_node);
ret = drm_simple_encoder_init(drm_dev, encoder, DRM_MODE_ENCODER_DSI);
if (ret) {
DRM_ERROR("Failed to initialize encoder with drm\n");
return ret;
}
drm_encoder_helper_add(encoder, &dw_mipi_dsi2_encoder_helper_funcs);
if (dsi2->bridge) {
struct list_head *connector_list =
&drm_dev->mode_config.connector_list;
dsi2->bridge->driver_private = &dsi2->host;
dsi2->bridge->encoder = encoder;
flags = dsi2->bridge->ops & DRM_BRIDGE_OP_MODES ?
DRM_BRIDGE_ATTACH_NO_CONNECTOR : 0;
ret = drm_bridge_attach(encoder, dsi2->bridge, NULL, flags);
if (ret) {
DRM_DEV_ERROR(dev,
"Failed to attach bridge: %d\n", ret);
goto encoder_cleanup;
}
if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR))
list_for_each_entry(connector, connector_list, head)
if (drm_connector_has_possible_encoder(connector,
encoder))
break;
}
if (dsi2->panel || (dsi2->bridge && (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR))) {
ret = dw_mipi_dsi2_connector_init(dsi2);
if (ret)
goto encoder_cleanup;
connector = &dsi2->connector;
}
if (connector) {
ret = dw_mipi_dsi2_register_sub_dev(dsi2, connector);
if (ret)
goto encoder_cleanup;
}
pm_runtime_enable(dsi2->dev);
if (dsi2->slave)
pm_runtime_enable(dsi2->slave->dev);
return 0;
encoder_cleanup:
encoder->funcs->destroy(encoder);
return ret;
}
static void dw_mipi_dsi2_unbind(struct device *dev, struct device *master,
void *data)
{
struct dw_mipi_dsi2 *dsi2 = dev_get_drvdata(dev);
if (dsi2->sub_dev.connector) {
rockchip_drm_unregister_sub_dev(&dsi2->sub_dev);
dsi2->connector.funcs->destroy(&dsi2->connector);
}
pm_runtime_disable(dsi2->dev);
if (dsi2->slave)
pm_runtime_disable(dsi2->slave->dev);
dsi2->encoder.funcs->destroy(&dsi2->encoder);
}
static const struct component_ops dw_mipi_dsi2_ops = {
.bind = dw_mipi_dsi2_bind,
.unbind = dw_mipi_dsi2_unbind,
};
struct dsi2_irq_data {
u32 offeset;
char *irq_src;
};
static const struct dsi2_irq_data dw_mipi_dsi2_irq_data[] = {
{DSI2_INT_ST_PHY, "int_st_phy"},
{DSI2_INT_ST_TO, "int_st_to"},
{DSI2_INT_ST_ACK, "int_st_ack"},
{DSI2_INT_ST_IPI, "int_st_ipi"},
{DSI2_INT_ST_FIFO, "int_st_fifo"},
{DSI2_INT_ST_PRI, "int_st_pri"},
{DSI2_INT_ST_CRI, "int_st_cri"},
};
static irqreturn_t dw_mipi_dsi2_irq_handler(int irq, void *dev_id)
{
struct dw_mipi_dsi2 *dsi2 = dev_id;
u32 int_st;
unsigned int i;
regmap_read(dsi2->regmap, INT_ST_MAIN, &int_st);
for (i = 0; i < ARRAY_SIZE(dw_mipi_dsi2_irq_data); i++)
if (int_st & BIT(i))
DRM_DEV_DEBUG(dsi2->dev, "%s\n",
dw_mipi_dsi2_irq_data[i].irq_src);
return IRQ_HANDLED;
}
static const struct regmap_config dw_mipi_dsi2_regmap_config = {
.name = "host",
.reg_bits = 32,
.val_bits = 32,
.reg_stride = 4,
.fast_io = true,
.max_register = DSI2_MAX_REGISGER,
};
static int dw_mipi_dsi2_host_attach(struct mipi_dsi_host *host,
struct mipi_dsi_device *device)
{
struct dw_mipi_dsi2 *dsi2 = host_to_dsi2(host);
if (dsi2->master)
return 0;
if (device->lanes < 1 || device->lanes > 8)
return -EINVAL;
dsi2->client = device->dev.of_node;
dsi2->lanes = device->lanes;
dsi2->channel = device->channel;
dsi2->format = device->format;
dsi2->mode_flags = device->mode_flags;
return 0;
}
static int dw_mipi_dsi2_host_detach(struct mipi_dsi_host *host,
struct mipi_dsi_device *device)
{
return 0;
}
static int dw_mipi_dsi2_read_from_fifo(struct dw_mipi_dsi2 *dsi2,
const struct mipi_dsi_msg *msg)
{
u8 *payload = msg->rx_buf;
u8 data_type;
u16 wc;
int i, j, ret, len = msg->rx_len;
unsigned int vrefresh = drm_mode_vrefresh(&dsi2->mode);
u32 val;
ret = regmap_read_poll_timeout(dsi2->regmap, DSI2_CORE_STATUS,
val, val & CRI_RD_DATA_AVAIL,
0, DIV_ROUND_UP(1000000, vrefresh));
if (ret) {
DRM_DEV_ERROR(dsi2->dev, "CRI has no available read data\n");
return ret;
}
regmap_read(dsi2->regmap, DSI2_CRI_RX_HDR, &val);
data_type = val & 0x3f;
if (mipi_dsi_packet_format_is_short(data_type)) {
for (i = 0; i < len && i < 2; i++)
payload[i] = (val >> (8 * (i + 1))) & 0xff;
return 0;
}
wc = (val >> 8) & 0xffff;
/* Receive payload */
for (i = 0; i < len && i < wc; i += 4) {
regmap_read(dsi2->regmap, DSI2_CRI_RX_PLD, &val);
for (j = 0; j < 4 && j + i < len && j + i < wc; j++)
payload[i + j] = val >> (8 * j);
}
return 0;
}
static ssize_t dw_mipi_dsi2_transfer(struct dw_mipi_dsi2 *dsi2,
const struct mipi_dsi_msg *msg)
{
struct mipi_dsi_packet packet;
int ret;
u32 val;
u32 mode;
regmap_update_bits(dsi2->regmap, DSI2_DSI_VID_TX_CFG,
LPDT_DISPLAY_CMD_EN,
msg->flags & MIPI_DSI_MSG_USE_LPM ?
LPDT_DISPLAY_CMD_EN : 0);
/* create a packet to the DSI protocol */
ret = mipi_dsi_create_packet(&packet, msg);
if (ret) {
DRM_DEV_ERROR(dsi2->dev, "failed to create packet: %d\n", ret);
return ret;
}
ret = cri_fifos_wait_avail(dsi2);
if (ret)
return ret;
/* Send payload */
while (DIV_ROUND_UP(packet.payload_length, 4)) {
/* check cri interface is not busy */
if (packet.payload_length < 4) {
/* send residu payload */
val = 0;
memcpy(&val, packet.payload, packet.payload_length);
regmap_write(dsi2->regmap, DSI2_CRI_TX_PLD, val);
packet.payload_length = 0;
} else {
val = get_unaligned_le32(packet.payload);
regmap_write(dsi2->regmap, DSI2_CRI_TX_PLD, val);
packet.payload += 4;
packet.payload_length -= 4;
}
}
/* Send packet header */
mode = CMD_TX_MODE(msg->flags & MIPI_DSI_MSG_USE_LPM ? 1 : 0);
val = get_unaligned_le32(packet.header);
regmap_write(dsi2->regmap, DSI2_CRI_TX_HDR, mode | val);
ret = cri_fifos_wait_avail(dsi2);
if (ret)
return ret;
if (msg->rx_len) {
ret = dw_mipi_dsi2_read_from_fifo(dsi2, msg);
if (ret < 0)
return ret;
}
if (dsi2->slave)
dw_mipi_dsi2_transfer(dsi2->slave, msg);
return msg->tx_len;
}
static ssize_t dw_mipi_dsi2_host_transfer(struct mipi_dsi_host *host,
const struct mipi_dsi_msg *msg)
{
struct dw_mipi_dsi2 *dsi2 = host_to_dsi2(host);
return dw_mipi_dsi2_transfer(dsi2, msg);
}
static const struct mipi_dsi_host_ops dw_mipi_dsi2_host_ops = {
.attach = dw_mipi_dsi2_host_attach,
.detach = dw_mipi_dsi2_host_detach,
.transfer = dw_mipi_dsi2_host_transfer,
};
static int dw_mipi_dsi2_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct dw_mipi_dsi2 *dsi2;
struct resource *res;
void __iomem *regs;
int id;
int ret;
dsi2 = devm_kzalloc(dev, sizeof(*dsi2), GFP_KERNEL);
if (!dsi2)
return -ENOMEM;
id = of_alias_get_id(dev->of_node, "dsi");
if (id < 0)
id = 0;
dsi2->dev = dev;
dsi2->id = id;
dsi2->pdata = of_device_get_match_data(dev);
platform_set_drvdata(pdev, dsi2);
dsi2->user_split_mode = device_property_read_bool(dev, "user-split-mode");
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
regs = devm_ioremap_resource(dev, res);
if (IS_ERR(regs))
return PTR_ERR(regs);
dsi2->irq = platform_get_irq(pdev, 0);
if (dsi2->irq < 0)
return dsi2->irq;
dsi2->pclk = devm_clk_get(dev, "pclk");
if (IS_ERR(dsi2->pclk)) {
ret = PTR_ERR(dsi2->pclk);
DRM_DEV_ERROR(dev, "Unable to get pclk: %d\n", ret);
return ret;
}
dsi2->sys_clk = devm_clk_get(dev, "sys_clk");
if (IS_ERR(dsi2->sys_clk)) {
ret = PTR_ERR(dsi2->sys_clk);
DRM_DEV_ERROR(dev, "Unable to get sys_clk: %d\n", ret);
return ret;
}
dsi2->regmap = devm_regmap_init_mmio(dev, regs,
&dw_mipi_dsi2_regmap_config);
if (IS_ERR(dsi2->regmap)) {
ret = PTR_ERR(dsi2->regmap);
DRM_DEV_ERROR(dev, "failed to init register map: %d\n", ret);
return ret;
}
dsi2->grf = syscon_regmap_lookup_by_phandle(dev->of_node,
"rockchip,grf");
if (IS_ERR(dsi2->grf)) {
ret = PTR_ERR(dsi2->grf);
DRM_DEV_ERROR(dsi2->dev, "Unable to get grf: %d\n", ret);
return ret;
}
dsi2->apb_rst = devm_reset_control_get(dev, "apb");
if (IS_ERR(dsi2->apb_rst)) {
ret = PTR_ERR(dsi2->apb_rst);
DRM_DEV_ERROR(dev,
"Unable to get reset control: %d\n", ret);
return ret;
}
dsi2->dcphy = devm_phy_optional_get(dev, "dcphy");
if (IS_ERR(dsi2->dcphy)) {
ret = PTR_ERR(dsi2->dcphy);
DRM_DEV_ERROR(dev, "failed to get mipi dcphy: %d\n", ret);
return ret;
}
dsi2->te_gpio = devm_gpiod_get_optional(dsi2->dev, "te", GPIOD_IN);
if (IS_ERR(dsi2->te_gpio))
dsi2->te_gpio = NULL;
if (dsi2->te_gpio) {
ret = devm_request_threaded_irq(dsi2->dev, gpiod_to_irq(dsi2->te_gpio),
NULL, dw_mipi_dsi2_te_irq_handler,
IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
"PANEL-TE", dsi2);
if (ret) {
dev_err(dsi2->dev, "failed to request TE IRQ: %d\n", ret);
return ret;
}
}
ret = devm_request_irq(dev, dsi2->irq, dw_mipi_dsi2_irq_handler,
IRQF_SHARED, dev_name(dev), dsi2);
if (ret) {
DRM_DEV_ERROR(dev, "failed to request irq: %d\n", ret);
return ret;
}
dsi2->host.ops = &dw_mipi_dsi2_host_ops;
dsi2->host.dev = dev;
ret = mipi_dsi_host_register(&dsi2->host);
if (ret) {
DRM_DEV_ERROR(dev, "Failed to register MIPI host: %d\n", ret);
return ret;
}
return component_add(&pdev->dev, &dw_mipi_dsi2_ops);
}
static int dw_mipi_dsi2_remove(struct platform_device *pdev)
{
return 0;
}
static __maybe_unused int dw_mipi_dsi2_runtime_suspend(struct device *dev)
{
struct dw_mipi_dsi2 *dsi2 = dev_get_drvdata(dev);
clk_disable_unprepare(dsi2->pclk);
clk_disable_unprepare(dsi2->sys_clk);
return 0;
}
static __maybe_unused int dw_mipi_dsi2_runtime_resume(struct device *dev)
{
struct dw_mipi_dsi2 *dsi2 = dev_get_drvdata(dev);
clk_prepare_enable(dsi2->pclk);
clk_prepare_enable(dsi2->sys_clk);
return 0;
}
static const struct dev_pm_ops dw_mipi_dsi2_rockchip_pm_ops = {
SET_RUNTIME_PM_OPS(dw_mipi_dsi2_runtime_suspend,
dw_mipi_dsi2_runtime_resume, NULL)
};
static const u32 rk3588_dsi0_grf_reg_fields[MAX_FIELDS] = {
[TXREQCLKHS_EN] = GRF_REG_FIELD(0x0000, 11, 11),
[GATING_EN] = GRF_REG_FIELD(0x0000, 10, 10),
[IPI_SHUTDN] = GRF_REG_FIELD(0x0000, 9, 9),
[IPI_COLORM] = GRF_REG_FIELD(0x0000, 8, 8),
[IPI_COLOR_DEPTH] = GRF_REG_FIELD(0x0000, 4, 7),
[IPI_FORMAT] = GRF_REG_FIELD(0x0000, 0, 3),
};
static const u32 rk3588_dsi1_grf_reg_fields[MAX_FIELDS] = {
[TXREQCLKHS_EN] = GRF_REG_FIELD(0x0004, 11, 11),
[GATING_EN] = GRF_REG_FIELD(0x0004, 10, 10),
[IPI_SHUTDN] = GRF_REG_FIELD(0x0004, 9, 9),
[IPI_COLORM] = GRF_REG_FIELD(0x0004, 8, 8),
[IPI_COLOR_DEPTH] = GRF_REG_FIELD(0x0004, 4, 7),
[IPI_FORMAT] = GRF_REG_FIELD(0x0004, 0, 3),
};
static const struct dw_mipi_dsi2_plat_data rk3588_mipi_dsi2_plat_data = {
.dsi0_grf_reg_fields = rk3588_dsi0_grf_reg_fields,
.dsi1_grf_reg_fields = rk3588_dsi1_grf_reg_fields,
.dphy_max_bit_rate_per_lane = 4500000000ULL,
.cphy_max_symbol_rate_per_lane = 2000000000ULL,
};
static const struct of_device_id dw_mipi_dsi2_dt_ids[] = {
{
.compatible = "rockchip,rk3588-mipi-dsi2",
.data = &rk3588_mipi_dsi2_plat_data,
},
{}
};
MODULE_DEVICE_TABLE(of, dw_mipi_dsi2_dt_ids);
struct platform_driver dw_mipi_dsi2_rockchip_driver = {
.probe = dw_mipi_dsi2_probe,
.remove = dw_mipi_dsi2_remove,
.driver = {
.of_match_table = dw_mipi_dsi2_dt_ids,
.pm = &dw_mipi_dsi2_rockchip_pm_ops,
.name = "dw-mipi-dsi2",
},
};
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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