1725 lines · c
1// SPDX-License-Identifier: GPL-2.0+2/*3 * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd4 * Author:5 * Chris Zhong <zyw@rock-chips.com>6 * Nickey Yang <nickey.yang@rock-chips.com>7 */8 9#include <linux/clk.h>10#include <linux/iopoll.h>11#include <linux/math64.h>12#include <linux/mfd/syscon.h>13#include <linux/module.h>14#include <linux/of_device.h>15#include <linux/of_platform.h>16#include <linux/phy/phy.h>17#include <linux/platform_device.h>18#include <linux/pm_runtime.h>19#include <linux/regmap.h>20 21#include <video/mipi_display.h>22 23#include <drm/bridge/dw_mipi_dsi.h>24#include <drm/drm_mipi_dsi.h>25#include <drm/drm_of.h>26#include <drm/drm_simple_kms_helper.h>27 28#include "rockchip_drm_drv.h"29 30#define DSI_PHY_RSTZ 0xa031#define PHY_DISFORCEPLL 032#define PHY_ENFORCEPLL BIT(3)33#define PHY_DISABLECLK 034#define PHY_ENABLECLK BIT(2)35#define PHY_RSTZ 036#define PHY_UNRSTZ BIT(1)37#define PHY_SHUTDOWNZ 038#define PHY_UNSHUTDOWNZ BIT(0)39 40#define DSI_PHY_IF_CFG 0xa441#define N_LANES(n) ((((n) - 1) & 0x3) << 0)42#define PHY_STOP_WAIT_TIME(cycle) (((cycle) & 0xff) << 8)43 44#define DSI_PHY_STATUS 0xb045#define LOCK BIT(0)46#define STOP_STATE_CLK_LANE BIT(2)47 48#define DSI_PHY_TST_CTRL0 0xb449#define PHY_TESTCLK BIT(1)50#define PHY_UNTESTCLK 051#define PHY_TESTCLR BIT(0)52#define PHY_UNTESTCLR 053 54#define DSI_PHY_TST_CTRL1 0xb855#define PHY_TESTEN BIT(16)56#define PHY_UNTESTEN 057#define PHY_TESTDOUT(n) (((n) & 0xff) << 8)58#define PHY_TESTDIN(n) (((n) & 0xff) << 0)59 60#define DSI_INT_ST0 0xbc61#define DSI_INT_ST1 0xc062#define DSI_INT_MSK0 0xc463#define DSI_INT_MSK1 0xc864 65#define PHY_STATUS_TIMEOUT_US 1000066#define CMD_PKT_STATUS_TIMEOUT_US 2000067 68#define BYPASS_VCO_RANGE BIT(7)69#define VCO_RANGE_CON_SEL(val) (((val) & 0x7) << 3)70#define VCO_IN_CAP_CON_DEFAULT (0x0 << 1)71#define VCO_IN_CAP_CON_LOW (0x1 << 1)72#define VCO_IN_CAP_CON_HIGH (0x2 << 1)73#define REF_BIAS_CUR_SEL BIT(0)74 75#define CP_CURRENT_3UA 0x176#define CP_CURRENT_4_5UA 0x277#define CP_CURRENT_7_5UA 0x678#define CP_CURRENT_6UA 0x979#define CP_CURRENT_12UA 0xb80#define CP_CURRENT_SEL(val) ((val) & 0xf)81#define CP_PROGRAM_EN BIT(7)82 83#define LPF_RESISTORS_15_5KOHM 0x184#define LPF_RESISTORS_13KOHM 0x285#define LPF_RESISTORS_11_5KOHM 0x486#define LPF_RESISTORS_10_5KOHM 0x887#define LPF_RESISTORS_8KOHM 0x1088#define LPF_PROGRAM_EN BIT(6)89#define LPF_RESISTORS_SEL(val) ((val) & 0x3f)90 91#define HSFREQRANGE_SEL(val) (((val) & 0x3f) << 1)92 93#define INPUT_DIVIDER(val) (((val) - 1) & 0x7f)94#define LOW_PROGRAM_EN 095#define HIGH_PROGRAM_EN BIT(7)96#define LOOP_DIV_LOW_SEL(val) (((val) - 1) & 0x1f)97#define LOOP_DIV_HIGH_SEL(val) ((((val) - 1) >> 5) & 0xf)98#define PLL_LOOP_DIV_EN BIT(5)99#define PLL_INPUT_DIV_EN BIT(4)100 101#define POWER_CONTROL BIT(6)102#define INTERNAL_REG_CURRENT BIT(3)103#define BIAS_BLOCK_ON BIT(2)104#define BANDGAP_ON BIT(0)105 106#define TER_RESISTOR_HIGH BIT(7)107#define TER_RESISTOR_LOW 0108#define LEVEL_SHIFTERS_ON BIT(6)109#define TER_CAL_DONE BIT(5)110#define SETRD_MAX (0x7 << 2)111#define POWER_MANAGE BIT(1)112#define TER_RESISTORS_ON BIT(0)113 114#define BIASEXTR_SEL(val) ((val) & 0x7)115#define BANDGAP_SEL(val) ((val) & 0x7)116#define TLP_PROGRAM_EN BIT(7)117#define THS_PRE_PROGRAM_EN BIT(7)118#define THS_ZERO_PROGRAM_EN BIT(6)119 120#define PLL_BIAS_CUR_SEL_CAP_VCO_CONTROL 0x10121#define PLL_CP_CONTROL_PLL_LOCK_BYPASS 0x11122#define PLL_LPF_AND_CP_CONTROL 0x12123#define PLL_INPUT_DIVIDER_RATIO 0x17124#define PLL_LOOP_DIVIDER_RATIO 0x18125#define PLL_INPUT_AND_LOOP_DIVIDER_RATIOS_CONTROL 0x19126#define BANDGAP_AND_BIAS_CONTROL 0x20127#define TERMINATION_RESISTER_CONTROL 0x21128#define AFE_BIAS_BANDGAP_ANALOG_PROGRAMMABILITY 0x22129#define HS_RX_CONTROL_OF_LANE_CLK 0x34130#define HS_RX_CONTROL_OF_LANE_0 0x44131#define HS_RX_CONTROL_OF_LANE_1 0x54132#define HS_TX_CLOCK_LANE_REQUEST_STATE_TIME_CONTROL 0x60133#define HS_TX_CLOCK_LANE_PREPARE_STATE_TIME_CONTROL 0x61134#define HS_TX_CLOCK_LANE_HS_ZERO_STATE_TIME_CONTROL 0x62135#define HS_TX_CLOCK_LANE_TRAIL_STATE_TIME_CONTROL 0x63136#define HS_TX_CLOCK_LANE_EXIT_STATE_TIME_CONTROL 0x64137#define HS_TX_CLOCK_LANE_POST_TIME_CONTROL 0x65138#define HS_TX_DATA_LANE_REQUEST_STATE_TIME_CONTROL 0x70139#define HS_TX_DATA_LANE_PREPARE_STATE_TIME_CONTROL 0x71140#define HS_TX_DATA_LANE_HS_ZERO_STATE_TIME_CONTROL 0x72141#define HS_TX_DATA_LANE_TRAIL_STATE_TIME_CONTROL 0x73142#define HS_TX_DATA_LANE_EXIT_STATE_TIME_CONTROL 0x74143#define HS_RX_DATA_LANE_THS_SETTLE_CONTROL 0x75144#define HS_RX_CONTROL_OF_LANE_2 0x84145#define HS_RX_CONTROL_OF_LANE_3 0x94146 147#define DW_MIPI_NEEDS_PHY_CFG_CLK BIT(0)148#define DW_MIPI_NEEDS_GRF_CLK BIT(1)149 150#define PX30_GRF_PD_VO_CON1 0x0438151#define PX30_DSI_FORCETXSTOPMODE (0xf << 7)152#define PX30_DSI_FORCERXMODE BIT(6)153#define PX30_DSI_TURNDISABLE BIT(5)154#define PX30_DSI_LCDC_SEL BIT(0)155 156#define RK3128_GRF_LVDS_CON0 0x0150157#define RK3128_DSI_FORCETXSTOPMODE GENMASK(13, 10)158#define RK3128_DSI_FORCERXMODE BIT(9)159#define RK3128_DSI_TURNDISABLE BIT(8)160 161#define RK3288_GRF_SOC_CON6 0x025c162#define RK3288_DSI0_LCDC_SEL BIT(6)163#define RK3288_DSI1_LCDC_SEL BIT(9)164 165#define RK3399_GRF_SOC_CON20 0x6250166#define RK3399_DSI0_LCDC_SEL BIT(0)167#define RK3399_DSI1_LCDC_SEL BIT(4)168 169#define RK3399_GRF_SOC_CON22 0x6258170#define RK3399_DSI0_TURNREQUEST (0xf << 12)171#define RK3399_DSI0_TURNDISABLE (0xf << 8)172#define RK3399_DSI0_FORCETXSTOPMODE (0xf << 4)173#define RK3399_DSI0_FORCERXMODE (0xf << 0)174 175#define RK3399_GRF_SOC_CON23 0x625c176#define RK3399_DSI1_TURNDISABLE (0xf << 12)177#define RK3399_DSI1_FORCETXSTOPMODE (0xf << 8)178#define RK3399_DSI1_FORCERXMODE (0xf << 4)179#define RK3399_DSI1_ENABLE (0xf << 0)180 181#define RK3399_GRF_SOC_CON24 0x6260182#define RK3399_TXRX_MASTERSLAVEZ BIT(7)183#define RK3399_TXRX_ENABLECLK BIT(6)184#define RK3399_TXRX_BASEDIR BIT(5)185#define RK3399_TXRX_SRC_SEL_ISP0 BIT(4)186#define RK3399_TXRX_TURNREQUEST GENMASK(3, 0)187 188#define RK3568_GRF_VO_CON2 0x0368189#define RK3568_DSI0_SKEWCALHS (0x1f << 11)190#define RK3568_DSI0_FORCETXSTOPMODE (0xf << 4)191#define RK3568_DSI0_TURNDISABLE BIT(2)192#define RK3568_DSI0_FORCERXMODE BIT(0)193 194/*195 * Note these registers do not appear in the datasheet, they are196 * however present in the BSP driver which is where these values197 * come from. Name GRF_VO_CON3 is assumed.198 */199#define RK3568_GRF_VO_CON3 0x36c200#define RK3568_DSI1_SKEWCALHS (0x1f << 11)201#define RK3568_DSI1_FORCETXSTOPMODE (0xf << 4)202#define RK3568_DSI1_TURNDISABLE BIT(2)203#define RK3568_DSI1_FORCERXMODE BIT(0)204 205#define RV1126_GRF_DSIPHY_CON 0x10220206#define RV1126_DSI_FORCETXSTOPMODE (0xf << 4)207#define RV1126_DSI_TURNDISABLE BIT(2)208#define RV1126_DSI_FORCERXMODE BIT(0)209 210#define HIWORD_UPDATE(val, mask) (val | (mask) << 16)211 212enum {213 DW_DSI_USAGE_IDLE,214 DW_DSI_USAGE_DSI,215 DW_DSI_USAGE_PHY,216};217 218enum {219 BANDGAP_97_07,220 BANDGAP_98_05,221 BANDGAP_99_02,222 BANDGAP_100_00,223 BANDGAP_93_17,224 BANDGAP_94_15,225 BANDGAP_95_12,226 BANDGAP_96_10,227};228 229enum {230 BIASEXTR_87_1,231 BIASEXTR_91_5,232 BIASEXTR_95_9,233 BIASEXTR_100,234 BIASEXTR_105_94,235 BIASEXTR_111_88,236 BIASEXTR_118_8,237 BIASEXTR_127_7,238};239 240struct rockchip_dw_dsi_chip_data {241 u32 reg;242 243 u32 lcdsel_grf_reg;244 u32 lcdsel_big;245 u32 lcdsel_lit;246 247 u32 enable_grf_reg;248 u32 enable;249 250 u32 lanecfg1_grf_reg;251 u32 lanecfg1;252 u32 lanecfg2_grf_reg;253 u32 lanecfg2;254 255 int (*dphy_rx_init)(struct phy *phy);256 int (*dphy_rx_power_on)(struct phy *phy);257 int (*dphy_rx_power_off)(struct phy *phy);258 259 unsigned int flags;260 unsigned int max_data_lanes;261};262 263struct dw_mipi_dsi_rockchip {264 struct device *dev;265 struct rockchip_encoder encoder;266 void __iomem *base;267 268 struct regmap *grf_regmap;269 struct clk *pclk;270 struct clk *pllref_clk;271 struct clk *grf_clk;272 struct clk *phy_cfg_clk;273 274 /* dual-channel */275 bool is_slave;276 struct dw_mipi_dsi_rockchip *slave;277 278 /* optional external dphy */279 struct phy *phy;280 union phy_configure_opts phy_opts;281 282 /* being a phy for other mipi hosts */283 unsigned int usage_mode;284 struct mutex usage_mutex;285 struct phy *dphy;286 struct phy_configure_opts_mipi_dphy dphy_config;287 288 unsigned int lane_mbps; /* per lane */289 u16 input_div;290 u16 feedback_div;291 u32 format;292 293 struct dw_mipi_dsi *dmd;294 const struct rockchip_dw_dsi_chip_data *cdata;295 struct dw_mipi_dsi_plat_data pdata;296 297 bool dsi_bound;298};299 300static struct dw_mipi_dsi_rockchip *to_dsi(struct drm_encoder *encoder)301{302 struct rockchip_encoder *rkencoder = to_rockchip_encoder(encoder);303 304 return container_of(rkencoder, struct dw_mipi_dsi_rockchip, encoder);305}306 307struct dphy_pll_parameter_map {308 unsigned int max_mbps;309 u8 hsfreqrange;310 u8 icpctrl;311 u8 lpfctrl;312};313 314/* The table is based on 27MHz DPHY pll reference clock. */315static const struct dphy_pll_parameter_map dppa_map[] = {316 { 89, 0x00, CP_CURRENT_3UA, LPF_RESISTORS_13KOHM },317 { 99, 0x10, CP_CURRENT_3UA, LPF_RESISTORS_13KOHM },318 { 109, 0x20, CP_CURRENT_3UA, LPF_RESISTORS_13KOHM },319 { 129, 0x01, CP_CURRENT_3UA, LPF_RESISTORS_15_5KOHM },320 { 139, 0x11, CP_CURRENT_3UA, LPF_RESISTORS_15_5KOHM },321 { 149, 0x21, CP_CURRENT_3UA, LPF_RESISTORS_15_5KOHM },322 { 169, 0x02, CP_CURRENT_6UA, LPF_RESISTORS_13KOHM },323 { 179, 0x12, CP_CURRENT_6UA, LPF_RESISTORS_13KOHM },324 { 199, 0x22, CP_CURRENT_6UA, LPF_RESISTORS_13KOHM },325 { 219, 0x03, CP_CURRENT_4_5UA, LPF_RESISTORS_13KOHM },326 { 239, 0x13, CP_CURRENT_4_5UA, LPF_RESISTORS_13KOHM },327 { 249, 0x23, CP_CURRENT_4_5UA, LPF_RESISTORS_13KOHM },328 { 269, 0x04, CP_CURRENT_6UA, LPF_RESISTORS_11_5KOHM },329 { 299, 0x14, CP_CURRENT_6UA, LPF_RESISTORS_11_5KOHM },330 { 329, 0x05, CP_CURRENT_3UA, LPF_RESISTORS_15_5KOHM },331 { 359, 0x15, CP_CURRENT_3UA, LPF_RESISTORS_15_5KOHM },332 { 399, 0x25, CP_CURRENT_3UA, LPF_RESISTORS_15_5KOHM },333 { 449, 0x06, CP_CURRENT_7_5UA, LPF_RESISTORS_11_5KOHM },334 { 499, 0x16, CP_CURRENT_7_5UA, LPF_RESISTORS_11_5KOHM },335 { 549, 0x07, CP_CURRENT_7_5UA, LPF_RESISTORS_10_5KOHM },336 { 599, 0x17, CP_CURRENT_7_5UA, LPF_RESISTORS_10_5KOHM },337 { 649, 0x08, CP_CURRENT_7_5UA, LPF_RESISTORS_11_5KOHM },338 { 699, 0x18, CP_CURRENT_7_5UA, LPF_RESISTORS_11_5KOHM },339 { 749, 0x09, CP_CURRENT_7_5UA, LPF_RESISTORS_11_5KOHM },340 { 799, 0x19, CP_CURRENT_7_5UA, LPF_RESISTORS_11_5KOHM },341 { 849, 0x29, CP_CURRENT_7_5UA, LPF_RESISTORS_11_5KOHM },342 { 899, 0x39, CP_CURRENT_7_5UA, LPF_RESISTORS_11_5KOHM },343 { 949, 0x0a, CP_CURRENT_12UA, LPF_RESISTORS_8KOHM },344 { 999, 0x1a, CP_CURRENT_12UA, LPF_RESISTORS_8KOHM },345 {1049, 0x2a, CP_CURRENT_12UA, LPF_RESISTORS_8KOHM },346 {1099, 0x3a, CP_CURRENT_12UA, LPF_RESISTORS_8KOHM },347 {1149, 0x0b, CP_CURRENT_12UA, LPF_RESISTORS_10_5KOHM },348 {1199, 0x1b, CP_CURRENT_12UA, LPF_RESISTORS_10_5KOHM },349 {1249, 0x2b, CP_CURRENT_12UA, LPF_RESISTORS_10_5KOHM },350 {1299, 0x3b, CP_CURRENT_12UA, LPF_RESISTORS_10_5KOHM },351 {1349, 0x0c, CP_CURRENT_12UA, LPF_RESISTORS_10_5KOHM },352 {1399, 0x1c, CP_CURRENT_12UA, LPF_RESISTORS_10_5KOHM },353 {1449, 0x2c, CP_CURRENT_12UA, LPF_RESISTORS_10_5KOHM },354 {1500, 0x3c, CP_CURRENT_12UA, LPF_RESISTORS_10_5KOHM }355};356 357static int max_mbps_to_parameter(unsigned int max_mbps)358{359 int i;360 361 for (i = 0; i < ARRAY_SIZE(dppa_map); i++)362 if (dppa_map[i].max_mbps >= max_mbps)363 return i;364 365 return -EINVAL;366}367 368static inline void dsi_write(struct dw_mipi_dsi_rockchip *dsi, u32 reg, u32 val)369{370 writel(val, dsi->base + reg);371}372 373static void dw_mipi_dsi_phy_write(struct dw_mipi_dsi_rockchip *dsi,374 u8 test_code,375 u8 test_data)376{377 /*378 * With the falling edge on TESTCLK, the TESTDIN[7:0] signal content379 * is latched internally as the current test code. Test data is380 * programmed internally by rising edge on TESTCLK.381 */382 dsi_write(dsi, DSI_PHY_TST_CTRL0, PHY_TESTCLK | PHY_UNTESTCLR);383 384 dsi_write(dsi, DSI_PHY_TST_CTRL1, PHY_TESTEN | PHY_TESTDOUT(0) |385 PHY_TESTDIN(test_code));386 387 dsi_write(dsi, DSI_PHY_TST_CTRL0, PHY_UNTESTCLK | PHY_UNTESTCLR);388 389 dsi_write(dsi, DSI_PHY_TST_CTRL1, PHY_UNTESTEN | PHY_TESTDOUT(0) |390 PHY_TESTDIN(test_data));391 392 dsi_write(dsi, DSI_PHY_TST_CTRL0, PHY_TESTCLK | PHY_UNTESTCLR);393}394 395/*396 * ns2bc - Nanoseconds to byte clock cycles397 */398static inline unsigned int ns2bc(struct dw_mipi_dsi_rockchip *dsi, int ns)399{400 return DIV_ROUND_UP(ns * dsi->lane_mbps / 8, 1000);401}402 403/*404 * ns2ui - Nanoseconds to UI time periods405 */406static inline unsigned int ns2ui(struct dw_mipi_dsi_rockchip *dsi, int ns)407{408 return DIV_ROUND_UP(ns * dsi->lane_mbps, 1000);409}410 411static int dw_mipi_dsi_phy_init(void *priv_data)412{413 struct dw_mipi_dsi_rockchip *dsi = priv_data;414 int ret, i, vco;415 416 if (dsi->phy)417 return 0;418 419 /*420 * Get vco from frequency(lane_mbps)421 * vco frequency table422 * 000 - between 80 and 200 MHz423 * 001 - between 200 and 300 MHz424 * 010 - between 300 and 500 MHz425 * 011 - between 500 and 700 MHz426 * 100 - between 700 and 900 MHz427 * 101 - between 900 and 1100 MHz428 * 110 - between 1100 and 1300 MHz429 * 111 - between 1300 and 1500 MHz430 */431 vco = (dsi->lane_mbps < 200) ? 0 : (dsi->lane_mbps + 100) / 200;432 433 i = max_mbps_to_parameter(dsi->lane_mbps);434 if (i < 0) {435 DRM_DEV_ERROR(dsi->dev,436 "failed to get parameter for %dmbps clock\n",437 dsi->lane_mbps);438 return i;439 }440 441 ret = clk_prepare_enable(dsi->phy_cfg_clk);442 if (ret) {443 DRM_DEV_ERROR(dsi->dev, "Failed to enable phy_cfg_clk\n");444 return ret;445 }446 447 dw_mipi_dsi_phy_write(dsi, PLL_BIAS_CUR_SEL_CAP_VCO_CONTROL,448 BYPASS_VCO_RANGE |449 VCO_RANGE_CON_SEL(vco) |450 VCO_IN_CAP_CON_LOW |451 REF_BIAS_CUR_SEL);452 453 dw_mipi_dsi_phy_write(dsi, PLL_CP_CONTROL_PLL_LOCK_BYPASS,454 CP_CURRENT_SEL(dppa_map[i].icpctrl));455 dw_mipi_dsi_phy_write(dsi, PLL_LPF_AND_CP_CONTROL,456 CP_PROGRAM_EN | LPF_PROGRAM_EN |457 LPF_RESISTORS_SEL(dppa_map[i].lpfctrl));458 459 dw_mipi_dsi_phy_write(dsi, HS_RX_CONTROL_OF_LANE_0,460 HSFREQRANGE_SEL(dppa_map[i].hsfreqrange));461 462 dw_mipi_dsi_phy_write(dsi, PLL_INPUT_DIVIDER_RATIO,463 INPUT_DIVIDER(dsi->input_div));464 dw_mipi_dsi_phy_write(dsi, PLL_LOOP_DIVIDER_RATIO,465 LOOP_DIV_LOW_SEL(dsi->feedback_div) |466 LOW_PROGRAM_EN);467 /*468 * We need set PLL_INPUT_AND_LOOP_DIVIDER_RATIOS_CONTROL immediately469 * to make the configured LSB effective according to IP simulation470 * and lab test results.471 * Only in this way can we get correct mipi phy pll frequency.472 */473 dw_mipi_dsi_phy_write(dsi, PLL_INPUT_AND_LOOP_DIVIDER_RATIOS_CONTROL,474 PLL_LOOP_DIV_EN | PLL_INPUT_DIV_EN);475 dw_mipi_dsi_phy_write(dsi, PLL_LOOP_DIVIDER_RATIO,476 LOOP_DIV_HIGH_SEL(dsi->feedback_div) |477 HIGH_PROGRAM_EN);478 dw_mipi_dsi_phy_write(dsi, PLL_INPUT_AND_LOOP_DIVIDER_RATIOS_CONTROL,479 PLL_LOOP_DIV_EN | PLL_INPUT_DIV_EN);480 481 dw_mipi_dsi_phy_write(dsi, AFE_BIAS_BANDGAP_ANALOG_PROGRAMMABILITY,482 LOW_PROGRAM_EN | BIASEXTR_SEL(BIASEXTR_127_7));483 dw_mipi_dsi_phy_write(dsi, AFE_BIAS_BANDGAP_ANALOG_PROGRAMMABILITY,484 HIGH_PROGRAM_EN | BANDGAP_SEL(BANDGAP_96_10));485 486 dw_mipi_dsi_phy_write(dsi, BANDGAP_AND_BIAS_CONTROL,487 POWER_CONTROL | INTERNAL_REG_CURRENT |488 BIAS_BLOCK_ON | BANDGAP_ON);489 490 dw_mipi_dsi_phy_write(dsi, TERMINATION_RESISTER_CONTROL,491 TER_RESISTOR_LOW | TER_CAL_DONE |492 SETRD_MAX | TER_RESISTORS_ON);493 dw_mipi_dsi_phy_write(dsi, TERMINATION_RESISTER_CONTROL,494 TER_RESISTOR_HIGH | LEVEL_SHIFTERS_ON |495 SETRD_MAX | POWER_MANAGE |496 TER_RESISTORS_ON);497 498 dw_mipi_dsi_phy_write(dsi, HS_TX_CLOCK_LANE_REQUEST_STATE_TIME_CONTROL,499 TLP_PROGRAM_EN | ns2bc(dsi, 500));500 dw_mipi_dsi_phy_write(dsi, HS_TX_CLOCK_LANE_PREPARE_STATE_TIME_CONTROL,501 THS_PRE_PROGRAM_EN | ns2ui(dsi, 40));502 dw_mipi_dsi_phy_write(dsi, HS_TX_CLOCK_LANE_HS_ZERO_STATE_TIME_CONTROL,503 THS_ZERO_PROGRAM_EN | ns2bc(dsi, 300));504 dw_mipi_dsi_phy_write(dsi, HS_TX_CLOCK_LANE_TRAIL_STATE_TIME_CONTROL,505 THS_PRE_PROGRAM_EN | ns2ui(dsi, 100));506 dw_mipi_dsi_phy_write(dsi, HS_TX_CLOCK_LANE_EXIT_STATE_TIME_CONTROL,507 BIT(5) | ns2bc(dsi, 100));508 dw_mipi_dsi_phy_write(dsi, HS_TX_CLOCK_LANE_POST_TIME_CONTROL,509 BIT(5) | (ns2bc(dsi, 60) + 7));510 511 dw_mipi_dsi_phy_write(dsi, HS_TX_DATA_LANE_REQUEST_STATE_TIME_CONTROL,512 TLP_PROGRAM_EN | ns2bc(dsi, 500));513 dw_mipi_dsi_phy_write(dsi, HS_TX_DATA_LANE_PREPARE_STATE_TIME_CONTROL,514 THS_PRE_PROGRAM_EN | (ns2ui(dsi, 50) + 20));515 dw_mipi_dsi_phy_write(dsi, HS_TX_DATA_LANE_HS_ZERO_STATE_TIME_CONTROL,516 THS_ZERO_PROGRAM_EN | (ns2bc(dsi, 140) + 2));517 dw_mipi_dsi_phy_write(dsi, HS_TX_DATA_LANE_TRAIL_STATE_TIME_CONTROL,518 THS_PRE_PROGRAM_EN | (ns2ui(dsi, 60) + 8));519 dw_mipi_dsi_phy_write(dsi, HS_TX_DATA_LANE_EXIT_STATE_TIME_CONTROL,520 BIT(5) | ns2bc(dsi, 100));521 522 clk_disable_unprepare(dsi->phy_cfg_clk);523 524 return ret;525}526 527static void dw_mipi_dsi_phy_power_on(void *priv_data)528{529 struct dw_mipi_dsi_rockchip *dsi = priv_data;530 int ret;531 532 ret = phy_set_mode(dsi->phy, PHY_MODE_MIPI_DPHY);533 if (ret) {534 DRM_DEV_ERROR(dsi->dev, "failed to set phy mode: %d\n", ret);535 return;536 }537 538 phy_configure(dsi->phy, &dsi->phy_opts);539 phy_power_on(dsi->phy);540}541 542static void dw_mipi_dsi_phy_power_off(void *priv_data)543{544 struct dw_mipi_dsi_rockchip *dsi = priv_data;545 546 phy_power_off(dsi->phy);547}548 549static int550dw_mipi_dsi_get_lane_mbps(void *priv_data, const struct drm_display_mode *mode,551 unsigned long mode_flags, u32 lanes, u32 format,552 unsigned int *lane_mbps)553{554 struct dw_mipi_dsi_rockchip *dsi = priv_data;555 int bpp;556 unsigned long mpclk, tmp;557 unsigned int target_mbps = 1000;558 unsigned int max_mbps = dppa_map[ARRAY_SIZE(dppa_map) - 1].max_mbps;559 unsigned long best_freq = 0;560 unsigned long fvco_min, fvco_max, fin, fout;561 unsigned int min_prediv, max_prediv;562 unsigned int _prediv, best_prediv;563 unsigned long _fbdiv, best_fbdiv;564 unsigned long min_delta = ULONG_MAX;565 566 dsi->format = format;567 bpp = mipi_dsi_pixel_format_to_bpp(dsi->format);568 if (bpp < 0) {569 DRM_DEV_ERROR(dsi->dev,570 "failed to get bpp for pixel format %d\n",571 dsi->format);572 return bpp;573 }574 575 mpclk = DIV_ROUND_UP(mode->clock, MSEC_PER_SEC);576 if (mpclk) {577 /* take 1 / 0.8, since mbps must big than bandwidth of RGB */578 tmp = mpclk * (bpp / lanes) * 10 / 8;579 if (tmp < max_mbps)580 target_mbps = tmp;581 else582 DRM_DEV_ERROR(dsi->dev,583 "DPHY clock frequency is out of range\n");584 }585 586 /* for external phy only a the mipi_dphy_config is necessary */587 if (dsi->phy) {588 phy_mipi_dphy_get_default_config(mode->clock * 1000 * 10 / 8,589 bpp, lanes,590 &dsi->phy_opts.mipi_dphy);591 dsi->lane_mbps = target_mbps;592 *lane_mbps = dsi->lane_mbps;593 594 return 0;595 }596 597 fin = clk_get_rate(dsi->pllref_clk);598 fout = target_mbps * USEC_PER_SEC;599 600 /* constraint: 5Mhz <= Fref / N <= 40MHz */601 min_prediv = DIV_ROUND_UP(fin, 40 * USEC_PER_SEC);602 max_prediv = fin / (5 * USEC_PER_SEC);603 604 /* constraint: 80MHz <= Fvco <= 1500Mhz */605 fvco_min = 80 * USEC_PER_SEC;606 fvco_max = 1500 * USEC_PER_SEC;607 608 for (_prediv = min_prediv; _prediv <= max_prediv; _prediv++) {609 u64 tmp;610 u32 delta;611 /* Fvco = Fref * M / N */612 tmp = (u64)fout * _prediv;613 do_div(tmp, fin);614 _fbdiv = tmp;615 /*616 * Due to the use of a "by 2 pre-scaler," the range of the617 * feedback multiplication value M is limited to even division618 * numbers, and m must be greater than 6, not bigger than 512.619 */620 if (_fbdiv < 6 || _fbdiv > 512)621 continue;622 623 _fbdiv += _fbdiv % 2;624 625 tmp = (u64)_fbdiv * fin;626 do_div(tmp, _prediv);627 if (tmp < fvco_min || tmp > fvco_max)628 continue;629 630 delta = abs(fout - tmp);631 if (delta < min_delta) {632 best_prediv = _prediv;633 best_fbdiv = _fbdiv;634 min_delta = delta;635 best_freq = tmp;636 }637 }638 639 if (best_freq) {640 dsi->lane_mbps = DIV_ROUND_UP(best_freq, USEC_PER_SEC);641 *lane_mbps = dsi->lane_mbps;642 dsi->input_div = best_prediv;643 dsi->feedback_div = best_fbdiv;644 } else {645 DRM_DEV_ERROR(dsi->dev, "Can not find best_freq for DPHY\n");646 return -EINVAL;647 }648 649 return 0;650}651 652struct hstt {653 unsigned int maxfreq;654 struct dw_mipi_dsi_dphy_timing timing;655};656 657#define HSTT(_maxfreq, _c_lp2hs, _c_hs2lp, _d_lp2hs, _d_hs2lp) \658{ \659 .maxfreq = _maxfreq, \660 .timing = { \661 .clk_lp2hs = _c_lp2hs, \662 .clk_hs2lp = _c_hs2lp, \663 .data_lp2hs = _d_lp2hs, \664 .data_hs2lp = _d_hs2lp, \665 } \666}667 668/* Table A-3 High-Speed Transition Times */669static struct hstt hstt_table[] = {670 HSTT( 90, 32, 20, 26, 13),671 HSTT( 100, 35, 23, 28, 14),672 HSTT( 110, 32, 22, 26, 13),673 HSTT( 130, 31, 20, 27, 13),674 HSTT( 140, 33, 22, 26, 14),675 HSTT( 150, 33, 21, 26, 14),676 HSTT( 170, 32, 20, 27, 13),677 HSTT( 180, 36, 23, 30, 15),678 HSTT( 200, 40, 22, 33, 15),679 HSTT( 220, 40, 22, 33, 15),680 HSTT( 240, 44, 24, 36, 16),681 HSTT( 250, 48, 24, 38, 17),682 HSTT( 270, 48, 24, 38, 17),683 HSTT( 300, 50, 27, 41, 18),684 HSTT( 330, 56, 28, 45, 18),685 HSTT( 360, 59, 28, 48, 19),686 HSTT( 400, 61, 30, 50, 20),687 HSTT( 450, 67, 31, 55, 21),688 HSTT( 500, 73, 31, 59, 22),689 HSTT( 550, 79, 36, 63, 24),690 HSTT( 600, 83, 37, 68, 25),691 HSTT( 650, 90, 38, 73, 27),692 HSTT( 700, 95, 40, 77, 28),693 HSTT( 750, 102, 40, 84, 28),694 HSTT( 800, 106, 42, 87, 30),695 HSTT( 850, 113, 44, 93, 31),696 HSTT( 900, 118, 47, 98, 32),697 HSTT( 950, 124, 47, 102, 34),698 HSTT(1000, 130, 49, 107, 35),699 HSTT(1050, 135, 51, 111, 37),700 HSTT(1100, 139, 51, 114, 38),701 HSTT(1150, 146, 54, 120, 40),702 HSTT(1200, 153, 57, 125, 41),703 HSTT(1250, 158, 58, 130, 42),704 HSTT(1300, 163, 58, 135, 44),705 HSTT(1350, 168, 60, 140, 45),706 HSTT(1400, 172, 64, 144, 47),707 HSTT(1450, 176, 65, 148, 48),708 HSTT(1500, 181, 66, 153, 50)709};710 711static int712dw_mipi_dsi_phy_get_timing(void *priv_data, unsigned int lane_mbps,713 struct dw_mipi_dsi_dphy_timing *timing)714{715 int i;716 717 for (i = 0; i < ARRAY_SIZE(hstt_table); i++)718 if (lane_mbps < hstt_table[i].maxfreq)719 break;720 721 if (i == ARRAY_SIZE(hstt_table))722 i--;723 724 *timing = hstt_table[i].timing;725 726 return 0;727}728 729static const struct dw_mipi_dsi_phy_ops dw_mipi_dsi_rockchip_phy_ops = {730 .init = dw_mipi_dsi_phy_init,731 .power_on = dw_mipi_dsi_phy_power_on,732 .power_off = dw_mipi_dsi_phy_power_off,733 .get_lane_mbps = dw_mipi_dsi_get_lane_mbps,734 .get_timing = dw_mipi_dsi_phy_get_timing,735};736 737static void dw_mipi_dsi_rockchip_config(struct dw_mipi_dsi_rockchip *dsi)738{739 if (dsi->cdata->lanecfg1_grf_reg)740 regmap_write(dsi->grf_regmap, dsi->cdata->lanecfg1_grf_reg,741 dsi->cdata->lanecfg1);742 743 if (dsi->cdata->lanecfg2_grf_reg)744 regmap_write(dsi->grf_regmap, dsi->cdata->lanecfg2_grf_reg,745 dsi->cdata->lanecfg2);746 747 if (dsi->cdata->enable_grf_reg)748 regmap_write(dsi->grf_regmap, dsi->cdata->enable_grf_reg,749 dsi->cdata->enable);750}751 752static void dw_mipi_dsi_rockchip_set_lcdsel(struct dw_mipi_dsi_rockchip *dsi,753 int mux)754{755 if (dsi->cdata->lcdsel_grf_reg)756 regmap_write(dsi->grf_regmap, dsi->cdata->lcdsel_grf_reg,757 mux ? dsi->cdata->lcdsel_lit : dsi->cdata->lcdsel_big);758}759 760static int761dw_mipi_dsi_encoder_atomic_check(struct drm_encoder *encoder,762 struct drm_crtc_state *crtc_state,763 struct drm_connector_state *conn_state)764{765 struct rockchip_crtc_state *s = to_rockchip_crtc_state(crtc_state);766 struct dw_mipi_dsi_rockchip *dsi = to_dsi(encoder);767 768 switch (dsi->format) {769 case MIPI_DSI_FMT_RGB888:770 s->output_mode = ROCKCHIP_OUT_MODE_P888;771 break;772 case MIPI_DSI_FMT_RGB666:773 s->output_mode = ROCKCHIP_OUT_MODE_P666;774 break;775 case MIPI_DSI_FMT_RGB565:776 s->output_mode = ROCKCHIP_OUT_MODE_P565;777 break;778 default:779 WARN_ON(1);780 return -EINVAL;781 }782 783 s->output_type = DRM_MODE_CONNECTOR_DSI;784 if (dsi->slave)785 s->output_flags = ROCKCHIP_OUTPUT_DSI_DUAL;786 787 return 0;788}789 790static void dw_mipi_dsi_encoder_enable(struct drm_encoder *encoder)791{792 struct dw_mipi_dsi_rockchip *dsi = to_dsi(encoder);793 int ret, mux;794 795 mux = drm_of_encoder_active_endpoint_id(dsi->dev->of_node,796 &dsi->encoder.encoder);797 if (mux < 0)798 return;799 800 /*801 * For the RK3399, the clk of grf must be enabled before writing grf802 * register. And for RK3288 or other soc, this grf_clk must be NULL,803 * the clk_prepare_enable return true directly.804 */805 ret = clk_prepare_enable(dsi->grf_clk);806 if (ret) {807 DRM_DEV_ERROR(dsi->dev, "Failed to enable grf_clk: %d\n", ret);808 return;809 }810 811 dw_mipi_dsi_rockchip_set_lcdsel(dsi, mux);812 if (dsi->slave)813 dw_mipi_dsi_rockchip_set_lcdsel(dsi->slave, mux);814 815 clk_disable_unprepare(dsi->grf_clk);816}817 818static const struct drm_encoder_helper_funcs819dw_mipi_dsi_encoder_helper_funcs = {820 .atomic_check = dw_mipi_dsi_encoder_atomic_check,821 .enable = dw_mipi_dsi_encoder_enable,822};823 824static int rockchip_dsi_drm_create_encoder(struct dw_mipi_dsi_rockchip *dsi,825 struct drm_device *drm_dev)826{827 struct drm_encoder *encoder = &dsi->encoder.encoder;828 int ret;829 830 encoder->possible_crtcs = drm_of_find_possible_crtcs(drm_dev,831 dsi->dev->of_node);832 833 ret = drm_simple_encoder_init(drm_dev, encoder, DRM_MODE_ENCODER_DSI);834 if (ret) {835 DRM_ERROR("Failed to initialize encoder with drm\n");836 return ret;837 }838 839 drm_encoder_helper_add(encoder, &dw_mipi_dsi_encoder_helper_funcs);840 841 return 0;842}843 844static struct device845*dw_mipi_dsi_rockchip_find_second(struct dw_mipi_dsi_rockchip *dsi)846{847 const struct of_device_id *match;848 struct device_node *node = NULL, *local;849 850 match = of_match_device(dsi->dev->driver->of_match_table, dsi->dev);851 852 local = of_graph_get_remote_node(dsi->dev->of_node, 1, 0);853 if (!local)854 return NULL;855 856 while ((node = of_find_compatible_node(node, NULL,857 match->compatible))) {858 struct device_node *remote;859 860 /* found ourself */861 if (node == dsi->dev->of_node)862 continue;863 864 remote = of_graph_get_remote_node(node, 1, 0);865 if (!remote)866 continue;867 868 /* same display device in port1-ep0 for both */869 if (remote == local) {870 struct dw_mipi_dsi_rockchip *dsi2;871 struct platform_device *pdev;872 873 pdev = of_find_device_by_node(node);874 875 /*876 * we have found the second, so will either return it877 * or return with an error. In any case won't need the878 * nodes anymore nor continue the loop.879 */880 of_node_put(remote);881 of_node_put(node);882 of_node_put(local);883 884 if (!pdev)885 return ERR_PTR(-EPROBE_DEFER);886 887 dsi2 = platform_get_drvdata(pdev);888 if (!dsi2) {889 platform_device_put(pdev);890 return ERR_PTR(-EPROBE_DEFER);891 }892 893 return &pdev->dev;894 }895 896 of_node_put(remote);897 }898 899 of_node_put(local);900 901 return NULL;902}903 904static int dw_mipi_dsi_rockchip_bind(struct device *dev,905 struct device *master,906 void *data)907{908 struct dw_mipi_dsi_rockchip *dsi = dev_get_drvdata(dev);909 struct drm_device *drm_dev = data;910 struct device *second;911 bool master1, master2;912 int ret;913 914 second = dw_mipi_dsi_rockchip_find_second(dsi);915 if (IS_ERR(second))916 return PTR_ERR(second);917 918 if (second) {919 master1 = of_property_read_bool(dsi->dev->of_node,920 "clock-master");921 master2 = of_property_read_bool(second->of_node,922 "clock-master");923 924 if (master1 && master2) {925 DRM_DEV_ERROR(dsi->dev, "only one clock-master allowed\n");926 return -EINVAL;927 }928 929 if (!master1 && !master2) {930 DRM_DEV_ERROR(dsi->dev, "no clock-master defined\n");931 return -EINVAL;932 }933 934 /* we are the slave in dual-DSI */935 if (!master1) {936 dsi->is_slave = true;937 return 0;938 }939 940 dsi->slave = dev_get_drvdata(second);941 if (!dsi->slave) {942 DRM_DEV_ERROR(dev, "could not get slaves data\n");943 return -ENODEV;944 }945 946 dsi->slave->is_slave = true;947 dw_mipi_dsi_set_slave(dsi->dmd, dsi->slave->dmd);948 put_device(second);949 }950 951 pm_runtime_get_sync(dsi->dev);952 if (dsi->slave)953 pm_runtime_get_sync(dsi->slave->dev);954 955 ret = clk_prepare_enable(dsi->pllref_clk);956 if (ret) {957 DRM_DEV_ERROR(dev, "Failed to enable pllref_clk: %d\n", ret);958 goto out_pm_runtime;959 }960 961 /*962 * With the GRF clock running, write lane and dual-mode configurations963 * that won't change immediately. If we waited until enable() to do964 * this, things like panel preparation would not be able to send965 * commands over DSI.966 */967 ret = clk_prepare_enable(dsi->grf_clk);968 if (ret) {969 DRM_DEV_ERROR(dsi->dev, "Failed to enable grf_clk: %d\n", ret);970 goto out_pll_clk;971 }972 973 dw_mipi_dsi_rockchip_config(dsi);974 if (dsi->slave)975 dw_mipi_dsi_rockchip_config(dsi->slave);976 977 clk_disable_unprepare(dsi->grf_clk);978 979 ret = rockchip_dsi_drm_create_encoder(dsi, drm_dev);980 if (ret) {981 DRM_DEV_ERROR(dev, "Failed to create drm encoder\n");982 goto out_pll_clk;983 }984 rockchip_drm_encoder_set_crtc_endpoint_id(&dsi->encoder,985 dev->of_node, 0, 0);986 987 ret = dw_mipi_dsi_bind(dsi->dmd, &dsi->encoder.encoder);988 if (ret) {989 DRM_DEV_ERROR(dev, "Failed to bind: %d\n", ret);990 goto out_pll_clk;991 }992 993 dsi->dsi_bound = true;994 995 return 0;996 997out_pll_clk:998 clk_disable_unprepare(dsi->pllref_clk);999out_pm_runtime:1000 pm_runtime_put(dsi->dev);1001 if (dsi->slave)1002 pm_runtime_put(dsi->slave->dev);1003 1004 return ret;1005}1006 1007static void dw_mipi_dsi_rockchip_unbind(struct device *dev,1008 struct device *master,1009 void *data)1010{1011 struct dw_mipi_dsi_rockchip *dsi = dev_get_drvdata(dev);1012 1013 if (dsi->is_slave)1014 return;1015 1016 dsi->dsi_bound = false;1017 1018 dw_mipi_dsi_unbind(dsi->dmd);1019 1020 clk_disable_unprepare(dsi->pllref_clk);1021 1022 pm_runtime_put(dsi->dev);1023 if (dsi->slave)1024 pm_runtime_put(dsi->slave->dev);1025}1026 1027static const struct component_ops dw_mipi_dsi_rockchip_ops = {1028 .bind = dw_mipi_dsi_rockchip_bind,1029 .unbind = dw_mipi_dsi_rockchip_unbind,1030};1031 1032static int dw_mipi_dsi_rockchip_host_attach(void *priv_data,1033 struct mipi_dsi_device *device)1034{1035 struct dw_mipi_dsi_rockchip *dsi = priv_data;1036 struct device *second;1037 int ret;1038 1039 mutex_lock(&dsi->usage_mutex);1040 1041 if (dsi->usage_mode != DW_DSI_USAGE_IDLE) {1042 DRM_DEV_ERROR(dsi->dev, "dsi controller already in use\n");1043 mutex_unlock(&dsi->usage_mutex);1044 return -EBUSY;1045 }1046 1047 dsi->usage_mode = DW_DSI_USAGE_DSI;1048 mutex_unlock(&dsi->usage_mutex);1049 1050 ret = component_add(dsi->dev, &dw_mipi_dsi_rockchip_ops);1051 if (ret) {1052 DRM_DEV_ERROR(dsi->dev, "Failed to register component: %d\n",1053 ret);1054 goto out;1055 }1056 1057 second = dw_mipi_dsi_rockchip_find_second(dsi);1058 if (IS_ERR(second)) {1059 ret = PTR_ERR(second);1060 goto out;1061 }1062 if (second) {1063 ret = component_add(second, &dw_mipi_dsi_rockchip_ops);1064 if (ret) {1065 DRM_DEV_ERROR(second,1066 "Failed to register component: %d\n",1067 ret);1068 goto out;1069 }1070 }1071 1072 return 0;1073 1074out:1075 mutex_lock(&dsi->usage_mutex);1076 dsi->usage_mode = DW_DSI_USAGE_IDLE;1077 mutex_unlock(&dsi->usage_mutex);1078 return ret;1079}1080 1081static int dw_mipi_dsi_rockchip_host_detach(void *priv_data,1082 struct mipi_dsi_device *device)1083{1084 struct dw_mipi_dsi_rockchip *dsi = priv_data;1085 struct device *second;1086 1087 second = dw_mipi_dsi_rockchip_find_second(dsi);1088 if (second && !IS_ERR(second))1089 component_del(second, &dw_mipi_dsi_rockchip_ops);1090 1091 component_del(dsi->dev, &dw_mipi_dsi_rockchip_ops);1092 1093 mutex_lock(&dsi->usage_mutex);1094 dsi->usage_mode = DW_DSI_USAGE_IDLE;1095 mutex_unlock(&dsi->usage_mutex);1096 1097 return 0;1098}1099 1100static const struct dw_mipi_dsi_host_ops dw_mipi_dsi_rockchip_host_ops = {1101 .attach = dw_mipi_dsi_rockchip_host_attach,1102 .detach = dw_mipi_dsi_rockchip_host_detach,1103};1104 1105static int dw_mipi_dsi_rockchip_dphy_bind(struct device *dev,1106 struct device *master,1107 void *data)1108{1109 /*1110 * Nothing to do when used as a dphy.1111 * Just make the rest of Rockchip-DRM happy1112 * by being here.1113 */1114 1115 return 0;1116}1117 1118static void dw_mipi_dsi_rockchip_dphy_unbind(struct device *dev,1119 struct device *master,1120 void *data)1121{1122 /* Nothing to do when used as a dphy. */1123}1124 1125static const struct component_ops dw_mipi_dsi_rockchip_dphy_ops = {1126 .bind = dw_mipi_dsi_rockchip_dphy_bind,1127 .unbind = dw_mipi_dsi_rockchip_dphy_unbind,1128};1129 1130static int dw_mipi_dsi_dphy_init(struct phy *phy)1131{1132 struct dw_mipi_dsi_rockchip *dsi = phy_get_drvdata(phy);1133 int ret;1134 1135 mutex_lock(&dsi->usage_mutex);1136 1137 if (dsi->usage_mode != DW_DSI_USAGE_IDLE) {1138 DRM_DEV_ERROR(dsi->dev, "dsi controller already in use\n");1139 mutex_unlock(&dsi->usage_mutex);1140 return -EBUSY;1141 }1142 1143 dsi->usage_mode = DW_DSI_USAGE_PHY;1144 mutex_unlock(&dsi->usage_mutex);1145 1146 ret = component_add(dsi->dev, &dw_mipi_dsi_rockchip_dphy_ops);1147 if (ret < 0)1148 goto err_graph;1149 1150 if (dsi->cdata->dphy_rx_init) {1151 ret = clk_prepare_enable(dsi->pclk);1152 if (ret < 0)1153 goto err_init;1154 1155 ret = clk_prepare_enable(dsi->grf_clk);1156 if (ret) {1157 clk_disable_unprepare(dsi->pclk);1158 goto err_init;1159 }1160 1161 ret = dsi->cdata->dphy_rx_init(phy);1162 clk_disable_unprepare(dsi->grf_clk);1163 clk_disable_unprepare(dsi->pclk);1164 if (ret < 0)1165 goto err_init;1166 }1167 1168 return 0;1169 1170err_init:1171 component_del(dsi->dev, &dw_mipi_dsi_rockchip_dphy_ops);1172err_graph:1173 mutex_lock(&dsi->usage_mutex);1174 dsi->usage_mode = DW_DSI_USAGE_IDLE;1175 mutex_unlock(&dsi->usage_mutex);1176 1177 return ret;1178}1179 1180static int dw_mipi_dsi_dphy_exit(struct phy *phy)1181{1182 struct dw_mipi_dsi_rockchip *dsi = phy_get_drvdata(phy);1183 1184 component_del(dsi->dev, &dw_mipi_dsi_rockchip_dphy_ops);1185 1186 mutex_lock(&dsi->usage_mutex);1187 dsi->usage_mode = DW_DSI_USAGE_IDLE;1188 mutex_unlock(&dsi->usage_mutex);1189 1190 return 0;1191}1192 1193static int dw_mipi_dsi_dphy_configure(struct phy *phy, union phy_configure_opts *opts)1194{1195 struct phy_configure_opts_mipi_dphy *config = &opts->mipi_dphy;1196 struct dw_mipi_dsi_rockchip *dsi = phy_get_drvdata(phy);1197 int ret;1198 1199 ret = phy_mipi_dphy_config_validate(&opts->mipi_dphy);1200 if (ret)1201 return ret;1202 1203 dsi->dphy_config = *config;1204 dsi->lane_mbps = div_u64(config->hs_clk_rate, 1000 * 1000 * 1);1205 1206 return 0;1207}1208 1209static int dw_mipi_dsi_dphy_power_on(struct phy *phy)1210{1211 struct dw_mipi_dsi_rockchip *dsi = phy_get_drvdata(phy);1212 int i, ret;1213 1214 DRM_DEV_DEBUG(dsi->dev, "lanes %d - data_rate_mbps %u\n",1215 dsi->dphy_config.lanes, dsi->lane_mbps);1216 1217 i = max_mbps_to_parameter(dsi->lane_mbps);1218 if (i < 0) {1219 DRM_DEV_ERROR(dsi->dev, "failed to get parameter for %dmbps clock\n",1220 dsi->lane_mbps);1221 return i;1222 }1223 1224 ret = pm_runtime_resume_and_get(dsi->dev);1225 if (ret < 0) {1226 DRM_DEV_ERROR(dsi->dev, "failed to enable device: %d\n", ret);1227 return ret;1228 }1229 1230 ret = clk_prepare_enable(dsi->pclk);1231 if (ret) {1232 DRM_DEV_ERROR(dsi->dev, "Failed to enable pclk: %d\n", ret);1233 goto err_pclk;1234 }1235 1236 ret = clk_prepare_enable(dsi->grf_clk);1237 if (ret) {1238 DRM_DEV_ERROR(dsi->dev, "Failed to enable grf_clk: %d\n", ret);1239 goto err_grf_clk;1240 }1241 1242 ret = clk_prepare_enable(dsi->phy_cfg_clk);1243 if (ret) {1244 DRM_DEV_ERROR(dsi->dev, "Failed to enable phy_cfg_clk: %d\n", ret);1245 goto err_phy_cfg_clk;1246 }1247 1248 /* do soc-variant specific init */1249 if (dsi->cdata->dphy_rx_power_on) {1250 ret = dsi->cdata->dphy_rx_power_on(phy);1251 if (ret < 0) {1252 DRM_DEV_ERROR(dsi->dev, "hardware-specific phy bringup failed: %d\n", ret);1253 goto err_pwr_on;1254 }1255 }1256 1257 /*1258 * Configure hsfreqrange according to frequency values1259 * Set clock lane and hsfreqrange by lane0(test code 0x44)1260 */1261 dw_mipi_dsi_phy_write(dsi, HS_RX_CONTROL_OF_LANE_CLK, 0);1262 dw_mipi_dsi_phy_write(dsi, HS_RX_CONTROL_OF_LANE_0,1263 HSFREQRANGE_SEL(dppa_map[i].hsfreqrange));1264 dw_mipi_dsi_phy_write(dsi, HS_RX_CONTROL_OF_LANE_1, 0);1265 dw_mipi_dsi_phy_write(dsi, HS_RX_CONTROL_OF_LANE_2, 0);1266 dw_mipi_dsi_phy_write(dsi, HS_RX_CONTROL_OF_LANE_3, 0);1267 1268 /* Normal operation */1269 dw_mipi_dsi_phy_write(dsi, 0x0, 0);1270 1271 clk_disable_unprepare(dsi->phy_cfg_clk);1272 clk_disable_unprepare(dsi->grf_clk);1273 1274 return ret;1275 1276err_pwr_on:1277 clk_disable_unprepare(dsi->phy_cfg_clk);1278err_phy_cfg_clk:1279 clk_disable_unprepare(dsi->grf_clk);1280err_grf_clk:1281 clk_disable_unprepare(dsi->pclk);1282err_pclk:1283 pm_runtime_put(dsi->dev);1284 return ret;1285}1286 1287static int dw_mipi_dsi_dphy_power_off(struct phy *phy)1288{1289 struct dw_mipi_dsi_rockchip *dsi = phy_get_drvdata(phy);1290 int ret;1291 1292 ret = clk_prepare_enable(dsi->grf_clk);1293 if (ret) {1294 DRM_DEV_ERROR(dsi->dev, "Failed to enable grf_clk: %d\n", ret);1295 return ret;1296 }1297 1298 if (dsi->cdata->dphy_rx_power_off) {1299 ret = dsi->cdata->dphy_rx_power_off(phy);1300 if (ret < 0)1301 DRM_DEV_ERROR(dsi->dev, "hardware-specific phy shutdown failed: %d\n", ret);1302 }1303 1304 clk_disable_unprepare(dsi->grf_clk);1305 clk_disable_unprepare(dsi->pclk);1306 1307 pm_runtime_put(dsi->dev);1308 1309 return ret;1310}1311 1312static const struct phy_ops dw_mipi_dsi_dphy_ops = {1313 .configure = dw_mipi_dsi_dphy_configure,1314 .power_on = dw_mipi_dsi_dphy_power_on,1315 .power_off = dw_mipi_dsi_dphy_power_off,1316 .init = dw_mipi_dsi_dphy_init,1317 .exit = dw_mipi_dsi_dphy_exit,1318};1319 1320static int __maybe_unused dw_mipi_dsi_rockchip_resume(struct device *dev)1321{1322 struct dw_mipi_dsi_rockchip *dsi = dev_get_drvdata(dev);1323 int ret;1324 1325 /*1326 * Re-configure DSI state, if we were previously initialized. We need1327 * to do this before rockchip_drm_drv tries to re-enable() any panels.1328 */1329 if (dsi->dsi_bound) {1330 ret = clk_prepare_enable(dsi->grf_clk);1331 if (ret) {1332 DRM_DEV_ERROR(dsi->dev, "Failed to enable grf_clk: %d\n", ret);1333 return ret;1334 }1335 1336 dw_mipi_dsi_rockchip_config(dsi);1337 if (dsi->slave)1338 dw_mipi_dsi_rockchip_config(dsi->slave);1339 1340 clk_disable_unprepare(dsi->grf_clk);1341 }1342 1343 return 0;1344}1345 1346static const struct dev_pm_ops dw_mipi_dsi_rockchip_pm_ops = {1347 SET_LATE_SYSTEM_SLEEP_PM_OPS(NULL, dw_mipi_dsi_rockchip_resume)1348};1349 1350static int dw_mipi_dsi_rockchip_probe(struct platform_device *pdev)1351{1352 struct device *dev = &pdev->dev;1353 struct device_node *np = dev->of_node;1354 struct dw_mipi_dsi_rockchip *dsi;1355 struct phy_provider *phy_provider;1356 struct resource *res;1357 const struct rockchip_dw_dsi_chip_data *cdata =1358 of_device_get_match_data(dev);1359 int ret, i;1360 1361 dsi = devm_kzalloc(dev, sizeof(*dsi), GFP_KERNEL);1362 if (!dsi)1363 return -ENOMEM;1364 1365 dsi->base = devm_platform_get_and_ioremap_resource(pdev, 0, &res);1366 if (IS_ERR(dsi->base)) {1367 DRM_DEV_ERROR(dev, "Unable to get dsi registers\n");1368 return PTR_ERR(dsi->base);1369 }1370 1371 i = 0;1372 while (cdata[i].reg) {1373 if (cdata[i].reg == res->start) {1374 dsi->cdata = &cdata[i];1375 break;1376 }1377 1378 i++;1379 }1380 1381 if (!dsi->cdata) {1382 DRM_DEV_ERROR(dev, "no dsi-config for %s node\n", np->name);1383 return -EINVAL;1384 }1385 1386 /* try to get a possible external dphy */1387 dsi->phy = devm_phy_optional_get(dev, "dphy");1388 if (IS_ERR(dsi->phy)) {1389 ret = PTR_ERR(dsi->phy);1390 DRM_DEV_ERROR(dev, "failed to get mipi dphy: %d\n", ret);1391 return ret;1392 }1393 1394 dsi->pclk = devm_clk_get(dev, "pclk");1395 if (IS_ERR(dsi->pclk)) {1396 ret = PTR_ERR(dsi->pclk);1397 DRM_DEV_ERROR(dev, "Unable to get pclk: %d\n", ret);1398 return ret;1399 }1400 1401 dsi->pllref_clk = devm_clk_get(dev, "ref");1402 if (IS_ERR(dsi->pllref_clk)) {1403 if (dsi->phy) {1404 /*1405 * if external phy is present, pll will be1406 * generated there.1407 */1408 dsi->pllref_clk = NULL;1409 } else {1410 ret = PTR_ERR(dsi->pllref_clk);1411 DRM_DEV_ERROR(dev,1412 "Unable to get pll reference clock: %d\n",1413 ret);1414 return ret;1415 }1416 }1417 1418 if (dsi->cdata->flags & DW_MIPI_NEEDS_PHY_CFG_CLK) {1419 dsi->phy_cfg_clk = devm_clk_get(dev, "phy_cfg");1420 if (IS_ERR(dsi->phy_cfg_clk)) {1421 ret = PTR_ERR(dsi->phy_cfg_clk);1422 DRM_DEV_ERROR(dev,1423 "Unable to get phy_cfg_clk: %d\n", ret);1424 return ret;1425 }1426 }1427 1428 if (dsi->cdata->flags & DW_MIPI_NEEDS_GRF_CLK) {1429 dsi->grf_clk = devm_clk_get(dev, "grf");1430 if (IS_ERR(dsi->grf_clk)) {1431 ret = PTR_ERR(dsi->grf_clk);1432 DRM_DEV_ERROR(dev, "Unable to get grf_clk: %d\n", ret);1433 return ret;1434 }1435 }1436 1437 dsi->grf_regmap = syscon_regmap_lookup_by_phandle(np, "rockchip,grf");1438 if (IS_ERR(dsi->grf_regmap)) {1439 DRM_DEV_ERROR(dev, "Unable to get rockchip,grf\n");1440 return PTR_ERR(dsi->grf_regmap);1441 }1442 1443 dsi->dev = dev;1444 dsi->pdata.base = dsi->base;1445 dsi->pdata.max_data_lanes = dsi->cdata->max_data_lanes;1446 dsi->pdata.phy_ops = &dw_mipi_dsi_rockchip_phy_ops;1447 dsi->pdata.host_ops = &dw_mipi_dsi_rockchip_host_ops;1448 dsi->pdata.priv_data = dsi;1449 platform_set_drvdata(pdev, dsi);1450 1451 mutex_init(&dsi->usage_mutex);1452 1453 dsi->dphy = devm_phy_create(dev, NULL, &dw_mipi_dsi_dphy_ops);1454 if (IS_ERR(dsi->dphy)) {1455 DRM_DEV_ERROR(&pdev->dev, "failed to create PHY\n");1456 return PTR_ERR(dsi->dphy);1457 }1458 1459 phy_set_drvdata(dsi->dphy, dsi);1460 phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);1461 if (IS_ERR(phy_provider))1462 return PTR_ERR(phy_provider);1463 1464 dsi->dmd = dw_mipi_dsi_probe(pdev, &dsi->pdata);1465 if (IS_ERR(dsi->dmd)) {1466 ret = PTR_ERR(dsi->dmd);1467 if (ret != -EPROBE_DEFER)1468 DRM_DEV_ERROR(dev,1469 "Failed to probe dw_mipi_dsi: %d\n", ret);1470 return ret;1471 }1472 1473 return 0;1474}1475 1476static void dw_mipi_dsi_rockchip_remove(struct platform_device *pdev)1477{1478 struct dw_mipi_dsi_rockchip *dsi = platform_get_drvdata(pdev);1479 1480 dw_mipi_dsi_remove(dsi->dmd);1481}1482 1483static const struct rockchip_dw_dsi_chip_data px30_chip_data[] = {1484 {1485 .reg = 0xff450000,1486 .lcdsel_grf_reg = PX30_GRF_PD_VO_CON1,1487 .lcdsel_big = HIWORD_UPDATE(0, PX30_DSI_LCDC_SEL),1488 .lcdsel_lit = HIWORD_UPDATE(PX30_DSI_LCDC_SEL,1489 PX30_DSI_LCDC_SEL),1490 1491 .lanecfg1_grf_reg = PX30_GRF_PD_VO_CON1,1492 .lanecfg1 = HIWORD_UPDATE(0, PX30_DSI_TURNDISABLE |1493 PX30_DSI_FORCERXMODE |1494 PX30_DSI_FORCETXSTOPMODE),1495 1496 .max_data_lanes = 4,1497 },1498 { /* sentinel */ }1499};1500 1501static const struct rockchip_dw_dsi_chip_data rk3128_chip_data[] = {1502 {1503 .reg = 0x10110000,1504 .lanecfg1_grf_reg = RK3128_GRF_LVDS_CON0,1505 .lanecfg1 = HIWORD_UPDATE(0, RK3128_DSI_TURNDISABLE |1506 RK3128_DSI_FORCERXMODE |1507 RK3128_DSI_FORCETXSTOPMODE),1508 .max_data_lanes = 4,1509 },1510 { /* sentinel */ }1511};1512 1513static const struct rockchip_dw_dsi_chip_data rk3288_chip_data[] = {1514 {1515 .reg = 0xff960000,1516 .lcdsel_grf_reg = RK3288_GRF_SOC_CON6,1517 .lcdsel_big = HIWORD_UPDATE(0, RK3288_DSI0_LCDC_SEL),1518 .lcdsel_lit = HIWORD_UPDATE(RK3288_DSI0_LCDC_SEL, RK3288_DSI0_LCDC_SEL),1519 1520 .max_data_lanes = 4,1521 },1522 {1523 .reg = 0xff964000,1524 .lcdsel_grf_reg = RK3288_GRF_SOC_CON6,1525 .lcdsel_big = HIWORD_UPDATE(0, RK3288_DSI1_LCDC_SEL),1526 .lcdsel_lit = HIWORD_UPDATE(RK3288_DSI1_LCDC_SEL, RK3288_DSI1_LCDC_SEL),1527 1528 .max_data_lanes = 4,1529 },1530 { /* sentinel */ }1531};1532 1533static int rk3399_dphy_tx1rx1_init(struct phy *phy)1534{1535 struct dw_mipi_dsi_rockchip *dsi = phy_get_drvdata(phy);1536 1537 /*1538 * Set TX1RX1 source to isp1.1539 * Assume ISP0 is supplied by the RX0 dphy.1540 */1541 regmap_write(dsi->grf_regmap, RK3399_GRF_SOC_CON24,1542 HIWORD_UPDATE(0, RK3399_TXRX_SRC_SEL_ISP0));1543 regmap_write(dsi->grf_regmap, RK3399_GRF_SOC_CON24,1544 HIWORD_UPDATE(0, RK3399_TXRX_MASTERSLAVEZ));1545 regmap_write(dsi->grf_regmap, RK3399_GRF_SOC_CON24,1546 HIWORD_UPDATE(0, RK3399_TXRX_BASEDIR));1547 regmap_write(dsi->grf_regmap, RK3399_GRF_SOC_CON23,1548 HIWORD_UPDATE(0, RK3399_DSI1_ENABLE));1549 1550 return 0;1551}1552 1553static int rk3399_dphy_tx1rx1_power_on(struct phy *phy)1554{1555 struct dw_mipi_dsi_rockchip *dsi = phy_get_drvdata(phy);1556 1557 /* tester reset pulse */1558 dsi_write(dsi, DSI_PHY_TST_CTRL0, PHY_TESTCLK | PHY_TESTCLR);1559 usleep_range(100, 150);1560 1561 regmap_write(dsi->grf_regmap, RK3399_GRF_SOC_CON24,1562 HIWORD_UPDATE(0, RK3399_TXRX_MASTERSLAVEZ));1563 regmap_write(dsi->grf_regmap, RK3399_GRF_SOC_CON24,1564 HIWORD_UPDATE(RK3399_TXRX_BASEDIR, RK3399_TXRX_BASEDIR));1565 1566 regmap_write(dsi->grf_regmap, RK3399_GRF_SOC_CON23,1567 HIWORD_UPDATE(0, RK3399_DSI1_FORCERXMODE));1568 regmap_write(dsi->grf_regmap, RK3399_GRF_SOC_CON23,1569 HIWORD_UPDATE(0, RK3399_DSI1_FORCETXSTOPMODE));1570 1571 /* Disable lane turn around, which is ignored in receive mode */1572 regmap_write(dsi->grf_regmap, RK3399_GRF_SOC_CON24,1573 HIWORD_UPDATE(0, RK3399_TXRX_TURNREQUEST));1574 regmap_write(dsi->grf_regmap, RK3399_GRF_SOC_CON23,1575 HIWORD_UPDATE(RK3399_DSI1_TURNDISABLE,1576 RK3399_DSI1_TURNDISABLE));1577 usleep_range(100, 150);1578 1579 dsi_write(dsi, DSI_PHY_TST_CTRL0, PHY_TESTCLK | PHY_UNTESTCLR);1580 usleep_range(100, 150);1581 1582 /* Enable dphy lanes */1583 regmap_write(dsi->grf_regmap, RK3399_GRF_SOC_CON23,1584 HIWORD_UPDATE(GENMASK(dsi->dphy_config.lanes - 1, 0),1585 RK3399_DSI1_ENABLE));1586 1587 usleep_range(100, 150);1588 1589 return 0;1590}1591 1592static int rk3399_dphy_tx1rx1_power_off(struct phy *phy)1593{1594 struct dw_mipi_dsi_rockchip *dsi = phy_get_drvdata(phy);1595 1596 regmap_write(dsi->grf_regmap, RK3399_GRF_SOC_CON23,1597 HIWORD_UPDATE(0, RK3399_DSI1_ENABLE));1598 1599 return 0;1600}1601 1602static const struct rockchip_dw_dsi_chip_data rk3399_chip_data[] = {1603 {1604 .reg = 0xff960000,1605 .lcdsel_grf_reg = RK3399_GRF_SOC_CON20,1606 .lcdsel_big = HIWORD_UPDATE(0, RK3399_DSI0_LCDC_SEL),1607 .lcdsel_lit = HIWORD_UPDATE(RK3399_DSI0_LCDC_SEL,1608 RK3399_DSI0_LCDC_SEL),1609 1610 .lanecfg1_grf_reg = RK3399_GRF_SOC_CON22,1611 .lanecfg1 = HIWORD_UPDATE(0, RK3399_DSI0_TURNREQUEST |1612 RK3399_DSI0_TURNDISABLE |1613 RK3399_DSI0_FORCETXSTOPMODE |1614 RK3399_DSI0_FORCERXMODE),1615 1616 .flags = DW_MIPI_NEEDS_PHY_CFG_CLK | DW_MIPI_NEEDS_GRF_CLK,1617 .max_data_lanes = 4,1618 },1619 {1620 .reg = 0xff968000,1621 .lcdsel_grf_reg = RK3399_GRF_SOC_CON20,1622 .lcdsel_big = HIWORD_UPDATE(0, RK3399_DSI1_LCDC_SEL),1623 .lcdsel_lit = HIWORD_UPDATE(RK3399_DSI1_LCDC_SEL,1624 RK3399_DSI1_LCDC_SEL),1625 1626 .lanecfg1_grf_reg = RK3399_GRF_SOC_CON23,1627 .lanecfg1 = HIWORD_UPDATE(0, RK3399_DSI1_TURNDISABLE |1628 RK3399_DSI1_FORCETXSTOPMODE |1629 RK3399_DSI1_FORCERXMODE |1630 RK3399_DSI1_ENABLE),1631 1632 .lanecfg2_grf_reg = RK3399_GRF_SOC_CON24,1633 .lanecfg2 = HIWORD_UPDATE(RK3399_TXRX_MASTERSLAVEZ |1634 RK3399_TXRX_ENABLECLK,1635 RK3399_TXRX_MASTERSLAVEZ |1636 RK3399_TXRX_ENABLECLK |1637 RK3399_TXRX_BASEDIR),1638 1639 .enable_grf_reg = RK3399_GRF_SOC_CON23,1640 .enable = HIWORD_UPDATE(RK3399_DSI1_ENABLE, RK3399_DSI1_ENABLE),1641 1642 .flags = DW_MIPI_NEEDS_PHY_CFG_CLK | DW_MIPI_NEEDS_GRF_CLK,1643 .max_data_lanes = 4,1644 1645 .dphy_rx_init = rk3399_dphy_tx1rx1_init,1646 .dphy_rx_power_on = rk3399_dphy_tx1rx1_power_on,1647 .dphy_rx_power_off = rk3399_dphy_tx1rx1_power_off,1648 },1649 { /* sentinel */ }1650};1651 1652static const struct rockchip_dw_dsi_chip_data rk3568_chip_data[] = {1653 {1654 .reg = 0xfe060000,1655 .lanecfg1_grf_reg = RK3568_GRF_VO_CON2,1656 .lanecfg1 = HIWORD_UPDATE(0, RK3568_DSI0_SKEWCALHS |1657 RK3568_DSI0_FORCETXSTOPMODE |1658 RK3568_DSI0_TURNDISABLE |1659 RK3568_DSI0_FORCERXMODE),1660 .max_data_lanes = 4,1661 },1662 {1663 .reg = 0xfe070000,1664 .lanecfg1_grf_reg = RK3568_GRF_VO_CON3,1665 .lanecfg1 = HIWORD_UPDATE(0, RK3568_DSI1_SKEWCALHS |1666 RK3568_DSI1_FORCETXSTOPMODE |1667 RK3568_DSI1_TURNDISABLE |1668 RK3568_DSI1_FORCERXMODE),1669 .max_data_lanes = 4,1670 },1671 { /* sentinel */ }1672};1673 1674static const struct rockchip_dw_dsi_chip_data rv1126_chip_data[] = {1675 {1676 .reg = 0xffb30000,1677 .lanecfg1_grf_reg = RV1126_GRF_DSIPHY_CON,1678 .lanecfg1 = HIWORD_UPDATE(0, RV1126_DSI_TURNDISABLE |1679 RV1126_DSI_FORCERXMODE |1680 RV1126_DSI_FORCETXSTOPMODE),1681 .max_data_lanes = 4,1682 },1683 { /* sentinel */ }1684};1685 1686static const struct of_device_id dw_mipi_dsi_rockchip_dt_ids[] = {1687 {1688 .compatible = "rockchip,px30-mipi-dsi",1689 .data = &px30_chip_data,1690 }, {1691 .compatible = "rockchip,rk3128-mipi-dsi",1692 .data = &rk3128_chip_data,1693 }, {1694 .compatible = "rockchip,rk3288-mipi-dsi",1695 .data = &rk3288_chip_data,1696 }, {1697 .compatible = "rockchip,rk3399-mipi-dsi",1698 .data = &rk3399_chip_data,1699 }, {1700 .compatible = "rockchip,rk3568-mipi-dsi",1701 .data = &rk3568_chip_data,1702 }, {1703 .compatible = "rockchip,rv1126-mipi-dsi",1704 .data = &rv1126_chip_data,1705 },1706 { /* sentinel */ }1707};1708MODULE_DEVICE_TABLE(of, dw_mipi_dsi_rockchip_dt_ids);1709 1710struct platform_driver dw_mipi_dsi_rockchip_driver = {1711 .probe = dw_mipi_dsi_rockchip_probe,1712 .remove_new = dw_mipi_dsi_rockchip_remove,1713 .driver = {1714 .of_match_table = dw_mipi_dsi_rockchip_dt_ids,1715 .pm = &dw_mipi_dsi_rockchip_pm_ops,1716 .name = "dw-mipi-dsi-rockchip",1717 /*1718 * For dual-DSI display, one DSI pokes at the other DSI's1719 * drvdata in dw_mipi_dsi_rockchip_find_second(). This is not1720 * safe for asynchronous probe.1721 */1722 .probe_type = PROBE_FORCE_SYNCHRONOUS,1723 },1724};1725