summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/rockchip/dw-mipi-dsi.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/gpu/drm/rockchip/dw-mipi-dsi.c')
-rw-r--r--drivers/gpu/drm/rockchip/dw-mipi-dsi.c1349
1 files changed, 0 insertions, 1349 deletions
diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c
deleted file mode 100644
index 662b6cb5d3f0..000000000000
--- a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c
+++ /dev/null
@@ -1,1349 +0,0 @@
-/*
- * Copyright (c) 2016, Fuzhou Rockchip Electronics Co., Ltd
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- */
-#include <linux/clk.h>
-#include <linux/component.h>
-#include <linux/iopoll.h>
-#include <linux/math64.h>
-#include <linux/module.h>
-#include <linux/of_device.h>
-#include <linux/pm_runtime.h>
-#include <linux/regmap.h>
-#include <linux/reset.h>
-#include <linux/mfd/syscon.h>
-#include <drm/drm_atomic_helper.h>
-#include <drm/drm_crtc.h>
-#include <drm/drm_crtc_helper.h>
-#include <drm/drm_mipi_dsi.h>
-#include <drm/drm_of.h>
-#include <drm/drm_panel.h>
-#include <drm/drmP.h>
-#include <video/mipi_display.h>
-
-#include "rockchip_drm_drv.h"
-#include "rockchip_drm_vop.h"
-
-#define DRIVER_NAME "dw-mipi-dsi"
-
-#define RK3288_GRF_SOC_CON6 0x025c
-#define RK3288_DSI0_SEL_VOP_LIT BIT(6)
-#define RK3288_DSI1_SEL_VOP_LIT BIT(9)
-
-#define RK3399_GRF_SOC_CON20 0x6250
-#define RK3399_DSI0_SEL_VOP_LIT BIT(0)
-#define RK3399_DSI1_SEL_VOP_LIT BIT(4)
-
-/* disable turnrequest, turndisable, forcetxstopmode, forcerxmode */
-#define RK3399_GRF_SOC_CON22 0x6258
-#define RK3399_GRF_DSI_MODE 0xffff0000
-
-#define DSI_VERSION 0x00
-#define DSI_PWR_UP 0x04
-#define RESET 0
-#define POWERUP BIT(0)
-
-#define DSI_CLKMGR_CFG 0x08
-#define TO_CLK_DIVIDSION(div) (((div) & 0xff) << 8)
-#define TX_ESC_CLK_DIVIDSION(div) (((div) & 0xff) << 0)
-
-#define DSI_DPI_VCID 0x0c
-#define DPI_VID(vid) (((vid) & 0x3) << 0)
-
-#define DSI_DPI_COLOR_CODING 0x10
-#define EN18_LOOSELY BIT(8)
-#define DPI_COLOR_CODING_16BIT_1 0x0
-#define DPI_COLOR_CODING_16BIT_2 0x1
-#define DPI_COLOR_CODING_16BIT_3 0x2
-#define DPI_COLOR_CODING_18BIT_1 0x3
-#define DPI_COLOR_CODING_18BIT_2 0x4
-#define DPI_COLOR_CODING_24BIT 0x5
-
-#define DSI_DPI_CFG_POL 0x14
-#define COLORM_ACTIVE_LOW BIT(4)
-#define SHUTD_ACTIVE_LOW BIT(3)
-#define HSYNC_ACTIVE_LOW BIT(2)
-#define VSYNC_ACTIVE_LOW BIT(1)
-#define DATAEN_ACTIVE_LOW BIT(0)
-
-#define DSI_DPI_LP_CMD_TIM 0x18
-#define OUTVACT_LPCMD_TIME(p) (((p) & 0xff) << 16)
-#define INVACT_LPCMD_TIME(p) ((p) & 0xff)
-
-#define DSI_DBI_CFG 0x20
-#define DSI_DBI_CMDSIZE 0x28
-
-#define DSI_PCKHDL_CFG 0x2c
-#define EN_CRC_RX BIT(4)
-#define EN_ECC_RX BIT(3)
-#define EN_BTA BIT(2)
-#define EN_EOTP_RX BIT(1)
-#define EN_EOTP_TX BIT(0)
-
-#define DSI_MODE_CFG 0x34
-#define ENABLE_VIDEO_MODE 0
-#define ENABLE_CMD_MODE BIT(0)
-
-#define DSI_VID_MODE_CFG 0x38
-#define FRAME_BTA_ACK BIT(14)
-#define ENABLE_LOW_POWER (0x3f << 8)
-#define ENABLE_LOW_POWER_MASK (0x3f << 8)
-#define VID_MODE_TYPE_NON_BURST_SYNC_PULSES 0x0
-#define VID_MODE_TYPE_NON_BURST_SYNC_EVENTS 0x1
-#define VID_MODE_TYPE_BURST 0x2
-#define VID_MODE_TYPE_MASK 0x3
-
-#define DSI_VID_PKT_SIZE 0x3c
-#define VID_PKT_SIZE(p) (((p) & 0x3fff) << 0)
-#define VID_PKT_MAX_SIZE 0x3fff
-
-#define DSI_VID_HSA_TIME 0x48
-#define DSI_VID_HBP_TIME 0x4c
-#define DSI_VID_HLINE_TIME 0x50
-#define DSI_VID_VSA_LINES 0x54
-#define DSI_VID_VBP_LINES 0x58
-#define DSI_VID_VFP_LINES 0x5c
-#define DSI_VID_VACTIVE_LINES 0x60
-#define DSI_CMD_MODE_CFG 0x68
-#define MAX_RD_PKT_SIZE_LP BIT(24)
-#define DCS_LW_TX_LP BIT(19)
-#define DCS_SR_0P_TX_LP BIT(18)
-#define DCS_SW_1P_TX_LP BIT(17)
-#define DCS_SW_0P_TX_LP BIT(16)
-#define GEN_LW_TX_LP BIT(14)
-#define GEN_SR_2P_TX_LP BIT(13)
-#define GEN_SR_1P_TX_LP BIT(12)
-#define GEN_SR_0P_TX_LP BIT(11)
-#define GEN_SW_2P_TX_LP BIT(10)
-#define GEN_SW_1P_TX_LP BIT(9)
-#define GEN_SW_0P_TX_LP BIT(8)
-#define EN_ACK_RQST BIT(1)
-#define EN_TEAR_FX BIT(0)
-
-#define CMD_MODE_ALL_LP (MAX_RD_PKT_SIZE_LP | \
- DCS_LW_TX_LP | \
- DCS_SR_0P_TX_LP | \
- DCS_SW_1P_TX_LP | \
- DCS_SW_0P_TX_LP | \
- GEN_LW_TX_LP | \
- GEN_SR_2P_TX_LP | \
- GEN_SR_1P_TX_LP | \
- GEN_SR_0P_TX_LP | \
- GEN_SW_2P_TX_LP | \
- GEN_SW_1P_TX_LP | \
- GEN_SW_0P_TX_LP)
-
-#define DSI_GEN_HDR 0x6c
-#define GEN_HDATA(data) (((data) & 0xffff) << 8)
-#define GEN_HDATA_MASK (0xffff << 8)
-#define GEN_HTYPE(type) (((type) & 0xff) << 0)
-#define GEN_HTYPE_MASK 0xff
-
-#define DSI_GEN_PLD_DATA 0x70
-
-#define DSI_CMD_PKT_STATUS 0x74
-#define GEN_CMD_EMPTY BIT(0)
-#define GEN_CMD_FULL BIT(1)
-#define GEN_PLD_W_EMPTY BIT(2)
-#define GEN_PLD_W_FULL BIT(3)
-#define GEN_PLD_R_EMPTY BIT(4)
-#define GEN_PLD_R_FULL BIT(5)
-#define GEN_RD_CMD_BUSY BIT(6)
-
-#define DSI_TO_CNT_CFG 0x78
-#define HSTX_TO_CNT(p) (((p) & 0xffff) << 16)
-#define LPRX_TO_CNT(p) ((p) & 0xffff)
-
-#define DSI_BTA_TO_CNT 0x8c
-#define DSI_LPCLK_CTRL 0x94
-#define AUTO_CLKLANE_CTRL BIT(1)
-#define PHY_TXREQUESTCLKHS BIT(0)
-
-#define DSI_PHY_TMR_LPCLK_CFG 0x98
-#define PHY_CLKHS2LP_TIME(lbcc) (((lbcc) & 0x3ff) << 16)
-#define PHY_CLKLP2HS_TIME(lbcc) ((lbcc) & 0x3ff)
-
-#define DSI_PHY_TMR_CFG 0x9c
-#define PHY_HS2LP_TIME(lbcc) (((lbcc) & 0xff) << 24)
-#define PHY_LP2HS_TIME(lbcc) (((lbcc) & 0xff) << 16)
-#define MAX_RD_TIME(lbcc) ((lbcc) & 0x7fff)
-
-#define DSI_PHY_RSTZ 0xa0
-#define PHY_DISFORCEPLL 0
-#define PHY_ENFORCEPLL BIT(3)
-#define PHY_DISABLECLK 0
-#define PHY_ENABLECLK BIT(2)
-#define PHY_RSTZ 0
-#define PHY_UNRSTZ BIT(1)
-#define PHY_SHUTDOWNZ 0
-#define PHY_UNSHUTDOWNZ BIT(0)
-
-#define DSI_PHY_IF_CFG 0xa4
-#define N_LANES(n) ((((n) - 1) & 0x3) << 0)
-#define PHY_STOP_WAIT_TIME(cycle) (((cycle) & 0xff) << 8)
-
-#define DSI_PHY_STATUS 0xb0
-#define LOCK BIT(0)
-#define STOP_STATE_CLK_LANE BIT(2)
-
-#define DSI_PHY_TST_CTRL0 0xb4
-#define PHY_TESTCLK BIT(1)
-#define PHY_UNTESTCLK 0
-#define PHY_TESTCLR BIT(0)
-#define PHY_UNTESTCLR 0
-
-#define DSI_PHY_TST_CTRL1 0xb8
-#define PHY_TESTEN BIT(16)
-#define PHY_UNTESTEN 0
-#define PHY_TESTDOUT(n) (((n) & 0xff) << 8)
-#define PHY_TESTDIN(n) (((n) & 0xff) << 0)
-
-#define DSI_INT_ST0 0xbc
-#define DSI_INT_ST1 0xc0
-#define DSI_INT_MSK0 0xc4
-#define DSI_INT_MSK1 0xc8
-
-#define PHY_STATUS_TIMEOUT_US 10000
-#define CMD_PKT_STATUS_TIMEOUT_US 20000
-
-#define BYPASS_VCO_RANGE BIT(7)
-#define VCO_RANGE_CON_SEL(val) (((val) & 0x7) << 3)
-#define VCO_IN_CAP_CON_DEFAULT (0x0 << 1)
-#define VCO_IN_CAP_CON_LOW (0x1 << 1)
-#define VCO_IN_CAP_CON_HIGH (0x2 << 1)
-#define REF_BIAS_CUR_SEL BIT(0)
-
-#define CP_CURRENT_3MA BIT(3)
-#define CP_PROGRAM_EN BIT(7)
-#define LPF_PROGRAM_EN BIT(6)
-#define LPF_RESISTORS_20_KOHM 0
-
-#define HSFREQRANGE_SEL(val) (((val) & 0x3f) << 1)
-
-#define INPUT_DIVIDER(val) (((val) - 1) & 0x7f)
-#define LOW_PROGRAM_EN 0
-#define HIGH_PROGRAM_EN BIT(7)
-#define LOOP_DIV_LOW_SEL(val) (((val) - 1) & 0x1f)
-#define LOOP_DIV_HIGH_SEL(val) ((((val) - 1) >> 5) & 0x1f)
-#define PLL_LOOP_DIV_EN BIT(5)
-#define PLL_INPUT_DIV_EN BIT(4)
-
-#define POWER_CONTROL BIT(6)
-#define INTERNAL_REG_CURRENT BIT(3)
-#define BIAS_BLOCK_ON BIT(2)
-#define BANDGAP_ON BIT(0)
-
-#define TER_RESISTOR_HIGH BIT(7)
-#define TER_RESISTOR_LOW 0
-#define LEVEL_SHIFTERS_ON BIT(6)
-#define TER_CAL_DONE BIT(5)
-#define SETRD_MAX (0x7 << 2)
-#define POWER_MANAGE BIT(1)
-#define TER_RESISTORS_ON BIT(0)
-
-#define BIASEXTR_SEL(val) ((val) & 0x7)
-#define BANDGAP_SEL(val) ((val) & 0x7)
-#define TLP_PROGRAM_EN BIT(7)
-#define THS_PRE_PROGRAM_EN BIT(7)
-#define THS_ZERO_PROGRAM_EN BIT(6)
-
-#define DW_MIPI_NEEDS_PHY_CFG_CLK BIT(0)
-#define DW_MIPI_NEEDS_GRF_CLK BIT(1)
-
-enum {
- BANDGAP_97_07,
- BANDGAP_98_05,
- BANDGAP_99_02,
- BANDGAP_100_00,
- BANDGAP_93_17,
- BANDGAP_94_15,
- BANDGAP_95_12,
- BANDGAP_96_10,
-};
-
-enum {
- BIASEXTR_87_1,
- BIASEXTR_91_5,
- BIASEXTR_95_9,
- BIASEXTR_100,
- BIASEXTR_105_94,
- BIASEXTR_111_88,
- BIASEXTR_118_8,
- BIASEXTR_127_7,
-};
-
-struct dw_mipi_dsi_plat_data {
- u32 dsi0_en_bit;
- u32 dsi1_en_bit;
- u32 grf_switch_reg;
- u32 grf_dsi0_mode;
- u32 grf_dsi0_mode_reg;
- unsigned int flags;
- unsigned int max_data_lanes;
-};
-
-struct dw_mipi_dsi {
- struct drm_encoder encoder;
- struct drm_connector connector;
- struct mipi_dsi_host dsi_host;
- struct drm_panel *panel;
- struct device *dev;
- struct regmap *grf_regmap;
- void __iomem *base;
-
- struct clk *grf_clk;
- struct clk *pllref_clk;
- struct clk *pclk;
- struct clk *phy_cfg_clk;
-
- int dpms_mode;
- unsigned int lane_mbps; /* per lane */
- u32 channel;
- u32 lanes;
- u32 format;
- u16 input_div;
- u16 feedback_div;
- unsigned long mode_flags;
-
- const struct dw_mipi_dsi_plat_data *pdata;
-};
-
-enum dw_mipi_dsi_mode {
- DW_MIPI_DSI_CMD_MODE,
- DW_MIPI_DSI_VID_MODE,
-};
-
-struct dphy_pll_testdin_map {
- unsigned int max_mbps;
- u8 testdin;
-};
-
-/* The table is based on 27MHz DPHY pll reference clock. */
-static const struct dphy_pll_testdin_map dptdin_map[] = {
- { 90, 0x00}, { 100, 0x10}, { 110, 0x20}, { 130, 0x01},
- { 140, 0x11}, { 150, 0x21}, { 170, 0x02}, { 180, 0x12},
- { 200, 0x22}, { 220, 0x03}, { 240, 0x13}, { 250, 0x23},
- { 270, 0x04}, { 300, 0x14}, { 330, 0x05}, { 360, 0x15},
- { 400, 0x25}, { 450, 0x06}, { 500, 0x16}, { 550, 0x07},
- { 600, 0x17}, { 650, 0x08}, { 700, 0x18}, { 750, 0x09},
- { 800, 0x19}, { 850, 0x29}, { 900, 0x39}, { 950, 0x0a},
- {1000, 0x1a}, {1050, 0x2a}, {1100, 0x3a}, {1150, 0x0b},
- {1200, 0x1b}, {1250, 0x2b}, {1300, 0x3b}, {1350, 0x0c},
- {1400, 0x1c}, {1450, 0x2c}, {1500, 0x3c}
-};
-
-static int max_mbps_to_testdin(unsigned int max_mbps)
-{
- int i;
-
- for (i = 0; i < ARRAY_SIZE(dptdin_map); i++)
- if (dptdin_map[i].max_mbps > max_mbps)
- return dptdin_map[i].testdin;
-
- return -EINVAL;
-}
-
-/*
- * The controller should generate 2 frames before
- * preparing the peripheral.
- */
-static void dw_mipi_dsi_wait_for_two_frames(struct drm_display_mode *mode)
-{
- int refresh, two_frames;
-
- refresh = drm_mode_vrefresh(mode);
- two_frames = DIV_ROUND_UP(MSEC_PER_SEC, refresh) * 2;
- msleep(two_frames);
-}
-
-static inline struct dw_mipi_dsi *host_to_dsi(struct mipi_dsi_host *host)
-{
- return container_of(host, struct dw_mipi_dsi, dsi_host);
-}
-
-static inline struct dw_mipi_dsi *con_to_dsi(struct drm_connector *con)
-{
- return container_of(con, struct dw_mipi_dsi, connector);
-}
-
-static inline struct dw_mipi_dsi *encoder_to_dsi(struct drm_encoder *encoder)
-{
- return container_of(encoder, struct dw_mipi_dsi, encoder);
-}
-
-static inline void dsi_write(struct dw_mipi_dsi *dsi, u32 reg, u32 val)
-{
- writel(val, dsi->base + reg);
-}
-
-static inline u32 dsi_read(struct dw_mipi_dsi *dsi, u32 reg)
-{
- return readl(dsi->base + reg);
-}
-
-static void dw_mipi_dsi_phy_write(struct dw_mipi_dsi *dsi, u8 test_code,
- u8 test_data)
-{
- /*
- * With the falling edge on TESTCLK, the TESTDIN[7:0] signal content
- * is latched internally as the current test code. Test data is
- * programmed internally by rising edge on TESTCLK.
- */
- dsi_write(dsi, DSI_PHY_TST_CTRL0, PHY_TESTCLK | PHY_UNTESTCLR);
-
- dsi_write(dsi, DSI_PHY_TST_CTRL1, PHY_TESTEN | PHY_TESTDOUT(0) |
- PHY_TESTDIN(test_code));
-
- dsi_write(dsi, DSI_PHY_TST_CTRL0, PHY_UNTESTCLK | PHY_UNTESTCLR);
-
- dsi_write(dsi, DSI_PHY_TST_CTRL1, PHY_UNTESTEN | PHY_TESTDOUT(0) |
- PHY_TESTDIN(test_data));
-
- dsi_write(dsi, DSI_PHY_TST_CTRL0, PHY_TESTCLK | PHY_UNTESTCLR);
-}
-
-/**
- * ns2bc - Nanoseconds to byte clock cycles
- */
-static inline unsigned int ns2bc(struct dw_mipi_dsi *dsi, int ns)
-{
- return DIV_ROUND_UP(ns * dsi->lane_mbps / 8, 1000);
-}
-
-/**
- * ns2ui - Nanoseconds to UI time periods
- */
-static inline unsigned int ns2ui(struct dw_mipi_dsi *dsi, int ns)
-{
- return DIV_ROUND_UP(ns * dsi->lane_mbps, 1000);
-}
-
-static int dw_mipi_dsi_phy_init(struct dw_mipi_dsi *dsi)
-{
- int ret, testdin, vco, val;
-
- vco = (dsi->lane_mbps < 200) ? 0 : (dsi->lane_mbps + 100) / 200;
-
- testdin = max_mbps_to_testdin(dsi->lane_mbps);
- if (testdin < 0) {
- DRM_DEV_ERROR(dsi->dev,
- "failed to get testdin for %dmbps lane clock\n",
- dsi->lane_mbps);
- return testdin;
- }
-
- /* Start by clearing PHY state */
- dsi_write(dsi, DSI_PHY_TST_CTRL0, PHY_UNTESTCLR);
- dsi_write(dsi, DSI_PHY_TST_CTRL0, PHY_TESTCLR);
- dsi_write(dsi, DSI_PHY_TST_CTRL0, PHY_UNTESTCLR);
-
- ret = clk_prepare_enable(dsi->phy_cfg_clk);
- if (ret) {
- DRM_DEV_ERROR(dsi->dev, "Failed to enable phy_cfg_clk\n");
- return ret;
- }
-
- dw_mipi_dsi_phy_write(dsi, 0x10, BYPASS_VCO_RANGE |
- VCO_RANGE_CON_SEL(vco) |
- VCO_IN_CAP_CON_LOW |
- REF_BIAS_CUR_SEL);
-
- dw_mipi_dsi_phy_write(dsi, 0x11, CP_CURRENT_3MA);
- dw_mipi_dsi_phy_write(dsi, 0x12, CP_PROGRAM_EN | LPF_PROGRAM_EN |
- LPF_RESISTORS_20_KOHM);
-
- dw_mipi_dsi_phy_write(dsi, 0x44, HSFREQRANGE_SEL(testdin));
-
- dw_mipi_dsi_phy_write(dsi, 0x17, INPUT_DIVIDER(dsi->input_div));
- dw_mipi_dsi_phy_write(dsi, 0x18, LOOP_DIV_LOW_SEL(dsi->feedback_div) |
- LOW_PROGRAM_EN);
- dw_mipi_dsi_phy_write(dsi, 0x18, LOOP_DIV_HIGH_SEL(dsi->feedback_div) |
- HIGH_PROGRAM_EN);
- dw_mipi_dsi_phy_write(dsi, 0x19, PLL_LOOP_DIV_EN | PLL_INPUT_DIV_EN);
-
- dw_mipi_dsi_phy_write(dsi, 0x22, LOW_PROGRAM_EN |
- BIASEXTR_SEL(BIASEXTR_127_7));
- dw_mipi_dsi_phy_write(dsi, 0x22, HIGH_PROGRAM_EN |
- BANDGAP_SEL(BANDGAP_96_10));
-
- dw_mipi_dsi_phy_write(dsi, 0x20, POWER_CONTROL | INTERNAL_REG_CURRENT |
- BIAS_BLOCK_ON | BANDGAP_ON);
-
- dw_mipi_dsi_phy_write(dsi, 0x21, TER_RESISTOR_LOW | TER_CAL_DONE |
- SETRD_MAX | TER_RESISTORS_ON);
- dw_mipi_dsi_phy_write(dsi, 0x21, TER_RESISTOR_HIGH | LEVEL_SHIFTERS_ON |
- SETRD_MAX | POWER_MANAGE |
- TER_RESISTORS_ON);
-
- dw_mipi_dsi_phy_write(dsi, 0x60, TLP_PROGRAM_EN | ns2bc(dsi, 500));
- dw_mipi_dsi_phy_write(dsi, 0x61, THS_PRE_PROGRAM_EN | ns2ui(dsi, 40));
- dw_mipi_dsi_phy_write(dsi, 0x62, THS_ZERO_PROGRAM_EN | ns2bc(dsi, 300));
- dw_mipi_dsi_phy_write(dsi, 0x63, THS_PRE_PROGRAM_EN | ns2ui(dsi, 100));
- dw_mipi_dsi_phy_write(dsi, 0x64, BIT(5) | ns2bc(dsi, 100));
- dw_mipi_dsi_phy_write(dsi, 0x65, BIT(5) | (ns2bc(dsi, 60) + 7));
-
- dw_mipi_dsi_phy_write(dsi, 0x70, TLP_PROGRAM_EN | ns2bc(dsi, 500));
- dw_mipi_dsi_phy_write(dsi, 0x71,
- THS_PRE_PROGRAM_EN | (ns2ui(dsi, 50) + 5));
- dw_mipi_dsi_phy_write(dsi, 0x72,
- THS_ZERO_PROGRAM_EN | (ns2bc(dsi, 140) + 2));
- dw_mipi_dsi_phy_write(dsi, 0x73,
- THS_PRE_PROGRAM_EN | (ns2ui(dsi, 60) + 8));
- dw_mipi_dsi_phy_write(dsi, 0x74, BIT(5) | ns2bc(dsi, 100));
-
- dsi_write(dsi, DSI_PHY_RSTZ, PHY_ENFORCEPLL | PHY_ENABLECLK |
- PHY_UNRSTZ | PHY_UNSHUTDOWNZ);
-
- ret = readl_poll_timeout(dsi->base + DSI_PHY_STATUS,
- val, val & LOCK, 1000, PHY_STATUS_TIMEOUT_US);
- if (ret < 0) {
- DRM_DEV_ERROR(dsi->dev, "failed to wait for phy lock state\n");
- goto phy_init_end;
- }
-
- ret = readl_poll_timeout(dsi->base + DSI_PHY_STATUS,
- val, val & STOP_STATE_CLK_LANE, 1000,
- PHY_STATUS_TIMEOUT_US);
- if (ret < 0)
- DRM_DEV_ERROR(dsi->dev,
- "failed to wait for phy clk lane stop state\n");
-
-phy_init_end:
- clk_disable_unprepare(dsi->phy_cfg_clk);
-
- return ret;
-}
-
-static int dw_mipi_dsi_get_lane_bps(struct dw_mipi_dsi *dsi,
- struct drm_display_mode *mode)
-{
- unsigned int i, pre;
- unsigned long mpclk, pllref, tmp;
- unsigned int m = 1, n = 1, target_mbps = 1000;
- unsigned int max_mbps = dptdin_map[ARRAY_SIZE(dptdin_map) - 1].max_mbps;
- int bpp;
-
- bpp = mipi_dsi_pixel_format_to_bpp(dsi->format);
- if (bpp < 0) {
- DRM_DEV_ERROR(dsi->dev,
- "failed to get bpp for pixel format %d\n",
- dsi->format);
- return bpp;
- }
-
- mpclk = DIV_ROUND_UP(mode->clock, MSEC_PER_SEC);
- if (mpclk) {
- /* take 1 / 0.8, since mbps must big than bandwidth of RGB */
- tmp = mpclk * (bpp / dsi->lanes) * 10 / 8;
- if (tmp < max_mbps)
- target_mbps = tmp;
- else
- DRM_DEV_ERROR(dsi->dev,
- "DPHY clock frequency is out of range\n");
- }
-
- pllref = DIV_ROUND_UP(clk_get_rate(dsi->pllref_clk), USEC_PER_SEC);
- tmp = pllref;
-
- /*
- * The limits on the PLL divisor are:
- *
- * 5MHz <= (pllref / n) <= 40MHz
- *
- * we walk over these values in descreasing order so that if we hit
- * an exact match for target_mbps it is more likely that "m" will be
- * even.
- *
- * TODO: ensure that "m" is even after this loop.
- */
- for (i = pllref / 5; i > (pllref / 40); i--) {
- pre = pllref / i;
- if ((tmp > (target_mbps % pre)) && (target_mbps / pre < 512)) {
- tmp = target_mbps % pre;
- n = i;
- m = target_mbps / pre;
- }
- if (tmp == 0)
- break;
- }
-
- dsi->lane_mbps = pllref / n * m;
- dsi->input_div = n;
- dsi->feedback_div = m;
-
- return 0;
-}
-
-static int dw_mipi_dsi_host_attach(struct mipi_dsi_host *host,
- struct mipi_dsi_device *device)
-{
- struct dw_mipi_dsi *dsi = host_to_dsi(host);
-
- if (device->lanes > dsi->pdata->max_data_lanes) {
- DRM_DEV_ERROR(dsi->dev,
- "the number of data lanes(%u) is too many\n",
- device->lanes);
- return -EINVAL;
- }
-
- dsi->lanes = device->lanes;
- dsi->channel = device->channel;
- dsi->format = device->format;
- dsi->mode_flags = device->mode_flags;
- dsi->panel = of_drm_find_panel(device->dev.of_node);
- if (!IS_ERR(dsi->panel))
- return drm_panel_attach(dsi->panel, &dsi->connector);
-
- return -EINVAL;
-}
-
-static int dw_mipi_dsi_host_detach(struct mipi_dsi_host *host,
- struct mipi_dsi_device *device)
-{
- struct dw_mipi_dsi *dsi = host_to_dsi(host);
-
- drm_panel_detach(dsi->panel);
-
- return 0;
-}
-
-static void dw_mipi_message_config(struct dw_mipi_dsi *dsi,
- const struct mipi_dsi_msg *msg)
-{
- bool lpm = msg->flags & MIPI_DSI_MSG_USE_LPM;
- u32 val = 0;
-
- if (msg->flags & MIPI_DSI_MSG_REQ_ACK)
- val |= EN_ACK_RQST;
- if (lpm)
- val |= CMD_MODE_ALL_LP;
-
- dsi_write(dsi, DSI_LPCLK_CTRL, lpm ? 0 : PHY_TXREQUESTCLKHS);
- dsi_write(dsi, DSI_CMD_MODE_CFG, val);
-}
-
-static int dw_mipi_dsi_gen_pkt_hdr_write(struct dw_mipi_dsi *dsi, u32 hdr_val)
-{
- int ret;
- u32 val, mask;
-
- ret = readl_poll_timeout(dsi->base + DSI_CMD_PKT_STATUS,
- val, !(val & GEN_CMD_FULL), 1000,
- CMD_PKT_STATUS_TIMEOUT_US);
- if (ret < 0) {
- DRM_DEV_ERROR(dsi->dev,
- "failed to get available command FIFO\n");
- return ret;
- }
-
- dsi_write(dsi, DSI_GEN_HDR, hdr_val);
-
- mask = GEN_CMD_EMPTY | GEN_PLD_W_EMPTY;
- ret = readl_poll_timeout(dsi->base + DSI_CMD_PKT_STATUS,
- val, (val & mask) == mask,
- 1000, CMD_PKT_STATUS_TIMEOUT_US);
- if (ret < 0) {
- DRM_DEV_ERROR(dsi->dev, "failed to write command FIFO\n");
- return ret;
- }
-
- return 0;
-}
-
-static int dw_mipi_dsi_dcs_short_write(struct dw_mipi_dsi *dsi,
- const struct mipi_dsi_msg *msg)
-{
- const u8 *tx_buf = msg->tx_buf;
- u16 data = 0;
- u32 val;
-
- if (msg->tx_len > 0)
- data |= tx_buf[0];
- if (msg->tx_len > 1)
- data |= tx_buf[1] << 8;
-
- if (msg->tx_len > 2) {
- DRM_DEV_ERROR(dsi->dev,
- "too long tx buf length %zu for short write\n",
- msg->tx_len);
- return -EINVAL;
- }
-
- val = GEN_HDATA(data) | GEN_HTYPE(msg->type);
- return dw_mipi_dsi_gen_pkt_hdr_write(dsi, val);
-}
-
-static int dw_mipi_dsi_dcs_long_write(struct dw_mipi_dsi *dsi,
- const struct mipi_dsi_msg *msg)
-{
- const u8 *tx_buf = msg->tx_buf;
- int len = msg->tx_len, pld_data_bytes = sizeof(u32), ret;
- u32 hdr_val = GEN_HDATA(msg->tx_len) | GEN_HTYPE(msg->type);
- u32 remainder;
- u32 val;
-
- if (msg->tx_len < 3) {
- DRM_DEV_ERROR(dsi->dev,
- "wrong tx buf length %zu for long write\n",
- msg->tx_len);
- return -EINVAL;
- }
-
- while (DIV_ROUND_UP(len, pld_data_bytes)) {
- if (len < pld_data_bytes) {
- remainder = 0;
- memcpy(&remainder, tx_buf, len);
- dsi_write(dsi, DSI_GEN_PLD_DATA, remainder);
- len = 0;
- } else {
- memcpy(&remainder, tx_buf, pld_data_bytes);
- dsi_write(dsi, DSI_GEN_PLD_DATA, remainder);
- tx_buf += pld_data_bytes;
- len -= pld_data_bytes;
- }
-
- ret = readl_poll_timeout(dsi->base + DSI_CMD_PKT_STATUS,
- val, !(val & GEN_PLD_W_FULL), 1000,
- CMD_PKT_STATUS_TIMEOUT_US);
- if (ret < 0) {
- DRM_DEV_ERROR(dsi->dev,
- "failed to get available write payload FIFO\n");
- return ret;
- }
- }
-
- return dw_mipi_dsi_gen_pkt_hdr_write(dsi, hdr_val);
-}
-
-static ssize_t dw_mipi_dsi_host_transfer(struct mipi_dsi_host *host,
- const struct mipi_dsi_msg *msg)
-{
- struct dw_mipi_dsi *dsi = host_to_dsi(host);
- int ret;
-
- dw_mipi_message_config(dsi, msg);
-
- switch (msg->type) {
- case MIPI_DSI_DCS_SHORT_WRITE:
- case MIPI_DSI_DCS_SHORT_WRITE_PARAM:
- case MIPI_DSI_SET_MAXIMUM_RETURN_PACKET_SIZE:
- ret = dw_mipi_dsi_dcs_short_write(dsi, msg);
- break;
- case MIPI_DSI_DCS_LONG_WRITE:
- ret = dw_mipi_dsi_dcs_long_write(dsi, msg);
- break;
- default:
- DRM_DEV_ERROR(dsi->dev, "unsupported message type 0x%02x\n",
- msg->type);
- ret = -EINVAL;
- }
-
- return ret;
-}
-
-static const struct mipi_dsi_host_ops dw_mipi_dsi_host_ops = {
- .attach = dw_mipi_dsi_host_attach,
- .detach = dw_mipi_dsi_host_detach,
- .transfer = dw_mipi_dsi_host_transfer,
-};
-
-static void dw_mipi_dsi_video_mode_config(struct dw_mipi_dsi *dsi)
-{
- u32 val;
-
- val = ENABLE_LOW_POWER;
-
- if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_BURST)
- val |= VID_MODE_TYPE_BURST;
- else if (dsi->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;
-
- dsi_write(dsi, DSI_VID_MODE_CFG, val);
-}
-
-static void dw_mipi_dsi_set_mode(struct dw_mipi_dsi *dsi,
- enum dw_mipi_dsi_mode mode)
-{
- if (mode == DW_MIPI_DSI_CMD_MODE) {
- dsi_write(dsi, DSI_PWR_UP, RESET);
- dsi_write(dsi, DSI_MODE_CFG, ENABLE_CMD_MODE);
- dsi_write(dsi, DSI_PWR_UP, POWERUP);
- } else {
- dsi_write(dsi, DSI_PWR_UP, RESET);
- dsi_write(dsi, DSI_MODE_CFG, ENABLE_VIDEO_MODE);
- dw_mipi_dsi_video_mode_config(dsi);
- dsi_write(dsi, DSI_LPCLK_CTRL, PHY_TXREQUESTCLKHS);
- dsi_write(dsi, DSI_PWR_UP, POWERUP);
- }
-}
-
-static void dw_mipi_dsi_disable(struct dw_mipi_dsi *dsi)
-{
- dsi_write(dsi, DSI_PWR_UP, RESET);
- dsi_write(dsi, DSI_PHY_RSTZ, PHY_RSTZ);
-}
-
-static void dw_mipi_dsi_init(struct dw_mipi_dsi *dsi)
-{
- /*
- * The maximum permitted escape clock is 20MHz and it is derived from
- * lanebyteclk, which is running at "lane_mbps / 8". Thus we want:
- *
- * (lane_mbps >> 3) / esc_clk_division < 20
- * which is:
- * (lane_mbps >> 3) / 20 > esc_clk_division
- */
- u32 esc_clk_division = (dsi->lane_mbps >> 3) / 20 + 1;
-
- dsi_write(dsi, DSI_PWR_UP, RESET);
- dsi_write(dsi, DSI_PHY_RSTZ, PHY_DISFORCEPLL | PHY_DISABLECLK
- | PHY_RSTZ | PHY_SHUTDOWNZ);
- dsi_write(dsi, DSI_CLKMGR_CFG, TO_CLK_DIVIDSION(10) |
- TX_ESC_CLK_DIVIDSION(esc_clk_division));
-}
-
-static void dw_mipi_dsi_dpi_config(struct dw_mipi_dsi *dsi,
- struct drm_display_mode *mode)
-{
- u32 val = 0, color = 0;
-
- switch (dsi->format) {
- case MIPI_DSI_FMT_RGB888:
- color = DPI_COLOR_CODING_24BIT;
- break;
- case MIPI_DSI_FMT_RGB666:
- color = DPI_COLOR_CODING_18BIT_2 | EN18_LOOSELY;
- break;
- case MIPI_DSI_FMT_RGB666_PACKED:
- color = DPI_COLOR_CODING_18BIT_1;
- break;
- case MIPI_DSI_FMT_RGB565:
- color = DPI_COLOR_CODING_16BIT_1;
- break;
- }
-
- if (mode->flags & DRM_MODE_FLAG_NVSYNC)
- val |= VSYNC_ACTIVE_LOW;
- if (mode->flags & DRM_MODE_FLAG_NHSYNC)
- val |= HSYNC_ACTIVE_LOW;
-
- dsi_write(dsi, DSI_DPI_VCID, DPI_VID(dsi->channel));
- dsi_write(dsi, DSI_DPI_COLOR_CODING, color);
- dsi_write(dsi, DSI_DPI_CFG_POL, val);
- dsi_write(dsi, DSI_DPI_LP_CMD_TIM, OUTVACT_LPCMD_TIME(4)
- | INVACT_LPCMD_TIME(4));
-}
-
-static void dw_mipi_dsi_packet_handler_config(struct dw_mipi_dsi *dsi)
-{
- dsi_write(dsi, DSI_PCKHDL_CFG, EN_CRC_RX | EN_ECC_RX | EN_BTA);
-}
-
-static void dw_mipi_dsi_video_packet_config(struct dw_mipi_dsi *dsi,
- struct drm_display_mode *mode)
-{
- dsi_write(dsi, DSI_VID_PKT_SIZE, VID_PKT_SIZE(mode->hdisplay));
-}
-
-static void dw_mipi_dsi_command_mode_config(struct dw_mipi_dsi *dsi)
-{
- dsi_write(dsi, DSI_TO_CNT_CFG, HSTX_TO_CNT(1000) | LPRX_TO_CNT(1000));
- dsi_write(dsi, DSI_BTA_TO_CNT, 0xd00);
- dsi_write(dsi, DSI_MODE_CFG, ENABLE_CMD_MODE);
-}
-
-/* Get lane byte clock cycles. */
-static u32 dw_mipi_dsi_get_hcomponent_lbcc(struct dw_mipi_dsi *dsi,
- struct drm_display_mode *mode,
- u32 hcomponent)
-{
- u32 frac, lbcc;
-
- lbcc = hcomponent * dsi->lane_mbps * MSEC_PER_SEC / 8;
-
- frac = lbcc % mode->clock;
- lbcc = lbcc / mode->clock;
- if (frac)
- lbcc++;
-
- return lbcc;
-}
-
-static void dw_mipi_dsi_line_timer_config(struct dw_mipi_dsi *dsi,
- struct drm_display_mode *mode)
-{
- u32 htotal, hsa, hbp, lbcc;
-
- htotal = mode->htotal;
- hsa = mode->hsync_end - mode->hsync_start;
- hbp = mode->htotal - mode->hsync_end;
-
- lbcc = dw_mipi_dsi_get_hcomponent_lbcc(dsi, mode, htotal);
- dsi_write(dsi, DSI_VID_HLINE_TIME, lbcc);
-
- lbcc = dw_mipi_dsi_get_hcomponent_lbcc(dsi, mode, hsa);
- dsi_write(dsi, DSI_VID_HSA_TIME, lbcc);
-
- lbcc = dw_mipi_dsi_get_hcomponent_lbcc(dsi, mode, hbp);
- dsi_write(dsi, DSI_VID_HBP_TIME, lbcc);
-}
-
-static void dw_mipi_dsi_vertical_timing_config(struct dw_mipi_dsi *dsi,
- struct drm_display_mode *mode)
-{
- u32 vactive, vsa, vfp, vbp;
-
- vactive = mode->vdisplay;
- vsa = mode->vsync_end - mode->vsync_start;
- vfp = mode->vsync_start - mode->vdisplay;
- vbp = mode->vtotal - mode->vsync_end;
-
- dsi_write(dsi, DSI_VID_VACTIVE_LINES, vactive);
- dsi_write(dsi, DSI_VID_VSA_LINES, vsa);
- dsi_write(dsi, DSI_VID_VFP_LINES, vfp);
- dsi_write(dsi, DSI_VID_VBP_LINES, vbp);
-}
-
-static void dw_mipi_dsi_dphy_timing_config(struct dw_mipi_dsi *dsi)
-{
- dsi_write(dsi, DSI_PHY_TMR_CFG, PHY_HS2LP_TIME(0x40)
- | PHY_LP2HS_TIME(0x40) | MAX_RD_TIME(10000));
-
- dsi_write(dsi, DSI_PHY_TMR_LPCLK_CFG, PHY_CLKHS2LP_TIME(0x40)
- | PHY_CLKLP2HS_TIME(0x40));
-}
-
-static void dw_mipi_dsi_dphy_interface_config(struct dw_mipi_dsi *dsi)
-{
- dsi_write(dsi, DSI_PHY_IF_CFG, PHY_STOP_WAIT_TIME(0x20) |
- N_LANES(dsi->lanes));
-}
-
-static void dw_mipi_dsi_clear_err(struct dw_mipi_dsi *dsi)
-{
- dsi_read(dsi, DSI_INT_ST0);
- dsi_read(dsi, DSI_INT_ST1);
- dsi_write(dsi, DSI_INT_MSK0, 0);
- dsi_write(dsi, DSI_INT_MSK1, 0);
-}
-
-static void dw_mipi_dsi_encoder_disable(struct drm_encoder *encoder)
-{
- struct dw_mipi_dsi *dsi = encoder_to_dsi(encoder);
-
- if (dsi->dpms_mode != DRM_MODE_DPMS_ON)
- return;
-
- if (clk_prepare_enable(dsi->pclk)) {
- DRM_DEV_ERROR(dsi->dev, "Failed to enable pclk\n");
- return;
- }
-
- drm_panel_disable(dsi->panel);
-
- dw_mipi_dsi_set_mode(dsi, DW_MIPI_DSI_CMD_MODE);
- drm_panel_unprepare(dsi->panel);
-
- dw_mipi_dsi_disable(dsi);
- pm_runtime_put(dsi->dev);
- clk_disable_unprepare(dsi->pclk);
- dsi->dpms_mode = DRM_MODE_DPMS_OFF;
-}
-
-static void dw_mipi_dsi_encoder_enable(struct drm_encoder *encoder)
-{
- struct dw_mipi_dsi *dsi = encoder_to_dsi(encoder);
- struct drm_display_mode *mode = &encoder->crtc->state->adjusted_mode;
- const struct dw_mipi_dsi_plat_data *pdata = dsi->pdata;
- int mux = drm_of_encoder_active_endpoint_id(dsi->dev->of_node, encoder);
- u32 val;
- int ret;
-
- ret = dw_mipi_dsi_get_lane_bps(dsi, mode);
- if (ret < 0)
- return;
-
- if (dsi->dpms_mode == DRM_MODE_DPMS_ON)
- return;
-
- if (clk_prepare_enable(dsi->pclk)) {
- DRM_DEV_ERROR(dsi->dev, "Failed to enable pclk\n");
- return;
- }
-
- pm_runtime_get_sync(dsi->dev);
- dw_mipi_dsi_init(dsi);
- dw_mipi_dsi_dpi_config(dsi, mode);
- dw_mipi_dsi_packet_handler_config(dsi);
- dw_mipi_dsi_video_mode_config(dsi);
- dw_mipi_dsi_video_packet_config(dsi, mode);
- dw_mipi_dsi_command_mode_config(dsi);
- dw_mipi_dsi_line_timer_config(dsi, mode);
- dw_mipi_dsi_vertical_timing_config(dsi, mode);
- dw_mipi_dsi_dphy_timing_config(dsi);
- dw_mipi_dsi_dphy_interface_config(dsi);
- dw_mipi_dsi_clear_err(dsi);
-
- /*
- * For the RK3399, the clk of grf must be enabled before writing grf
- * register. And for RK3288 or other soc, this grf_clk must be NULL,
- * the clk_prepare_enable return true directly.
- */
- ret = clk_prepare_enable(dsi->grf_clk);
- if (ret) {
- DRM_DEV_ERROR(dsi->dev, "Failed to enable grf_clk: %d\n", ret);
- return;
- }
-
- if (pdata->grf_dsi0_mode_reg)
- regmap_write(dsi->grf_regmap, pdata->grf_dsi0_mode_reg,
- pdata->grf_dsi0_mode);
-
- dw_mipi_dsi_phy_init(dsi);
- dw_mipi_dsi_wait_for_two_frames(mode);
-
- dw_mipi_dsi_set_mode(dsi, DW_MIPI_DSI_CMD_MODE);
- if (drm_panel_prepare(dsi->panel))
- DRM_DEV_ERROR(dsi->dev, "failed to prepare panel\n");
-
- dw_mipi_dsi_set_mode(dsi, DW_MIPI_DSI_VID_MODE);
- drm_panel_enable(dsi->panel);
-
- clk_disable_unprepare(dsi->pclk);
-
- if (mux)
- val = pdata->dsi0_en_bit | (pdata->dsi0_en_bit << 16);
- else
- val = pdata->dsi0_en_bit << 16;
-
- regmap_write(dsi->grf_regmap, pdata->grf_switch_reg, val);
- DRM_DEV_DEBUG(dsi->dev,
- "vop %s output to dsi0\n", (mux) ? "LIT" : "BIG");
- dsi->dpms_mode = DRM_MODE_DPMS_ON;
-
- clk_disable_unprepare(dsi->grf_clk);
-}
-
-static int
-dw_mipi_dsi_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_dsi *dsi = encoder_to_dsi(encoder);
-
- switch (dsi->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;
- }
-
- s->output_type = DRM_MODE_CONNECTOR_DSI;
-
- return 0;
-}
-
-static const struct drm_encoder_helper_funcs
-dw_mipi_dsi_encoder_helper_funcs = {
- .enable = dw_mipi_dsi_encoder_enable,
- .disable = dw_mipi_dsi_encoder_disable,
- .atomic_check = dw_mipi_dsi_encoder_atomic_check,
-};
-
-static const struct drm_encoder_funcs dw_mipi_dsi_encoder_funcs = {
- .destroy = drm_encoder_cleanup,
-};
-
-static int dw_mipi_dsi_connector_get_modes(struct drm_connector *connector)
-{
- struct dw_mipi_dsi *dsi = con_to_dsi(connector);
-
- return drm_panel_get_modes(dsi->panel);
-}
-
-static struct drm_connector_helper_funcs dw_mipi_dsi_connector_helper_funcs = {
- .get_modes = dw_mipi_dsi_connector_get_modes,
-};
-
-static void dw_mipi_dsi_drm_connector_destroy(struct drm_connector *connector)
-{
- drm_connector_unregister(connector);
- drm_connector_cleanup(connector);
-}
-
-static const struct drm_connector_funcs dw_mipi_dsi_atomic_connector_funcs = {
- .fill_modes = drm_helper_probe_single_connector_modes,
- .destroy = dw_mipi_dsi_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_dsi_register(struct drm_device *drm,
- struct dw_mipi_dsi *dsi)
-{
- struct drm_encoder *encoder = &dsi->encoder;
- struct drm_connector *connector = &dsi->connector;
- struct device *dev = dsi->dev;
- int ret;
-
- encoder->possible_crtcs = drm_of_find_possible_crtcs(drm,
- dev->of_node);
- /*
- * If we failed to find the CRTC(s) which this encoder is
- * supposed to be connected to, it's because the CRTC has
- * not been registered yet. Defer probing, and hope that
- * the required CRTC is added later.
- */
- if (encoder->possible_crtcs == 0)
- return -EPROBE_DEFER;
-
- drm_encoder_helper_add(&dsi->encoder,
- &dw_mipi_dsi_encoder_helper_funcs);
- ret = drm_encoder_init(drm, &dsi->encoder, &dw_mipi_dsi_encoder_funcs,
- DRM_MODE_ENCODER_DSI, NULL);
- if (ret) {
- DRM_DEV_ERROR(dev, "Failed to initialize encoder with drm\n");
- return ret;
- }
-
- drm_connector_helper_add(connector,
- &dw_mipi_dsi_connector_helper_funcs);
-
- drm_connector_init(drm, &dsi->connector,
- &dw_mipi_dsi_atomic_connector_funcs,
- DRM_MODE_CONNECTOR_DSI);
-
- drm_connector_attach_encoder(connector, encoder);
-
- return 0;
-}
-
-static int rockchip_mipi_parse_dt(struct dw_mipi_dsi *dsi)
-{
- struct device_node *np = dsi->dev->of_node;
-
- dsi->grf_regmap = syscon_regmap_lookup_by_phandle(np, "rockchip,grf");
- if (IS_ERR(dsi->grf_regmap)) {
- DRM_DEV_ERROR(dsi->dev, "Unable to get rockchip,grf\n");
- return PTR_ERR(dsi->grf_regmap);
- }
-
- return 0;
-}
-
-static struct dw_mipi_dsi_plat_data rk3288_mipi_dsi_drv_data = {
- .dsi0_en_bit = RK3288_DSI0_SEL_VOP_LIT,
- .dsi1_en_bit = RK3288_DSI1_SEL_VOP_LIT,
- .grf_switch_reg = RK3288_GRF_SOC_CON6,
- .max_data_lanes = 4,
-};
-
-static struct dw_mipi_dsi_plat_data rk3399_mipi_dsi_drv_data = {
- .dsi0_en_bit = RK3399_DSI0_SEL_VOP_LIT,
- .dsi1_en_bit = RK3399_DSI1_SEL_VOP_LIT,
- .grf_switch_reg = RK3399_GRF_SOC_CON20,
- .grf_dsi0_mode = RK3399_GRF_DSI_MODE,
- .grf_dsi0_mode_reg = RK3399_GRF_SOC_CON22,
- .flags = DW_MIPI_NEEDS_PHY_CFG_CLK | DW_MIPI_NEEDS_GRF_CLK,
- .max_data_lanes = 4,
-};
-
-static const struct of_device_id dw_mipi_dsi_dt_ids[] = {
- {
- .compatible = "rockchip,rk3288-mipi-dsi",
- .data = &rk3288_mipi_dsi_drv_data,
- }, {
- .compatible = "rockchip,rk3399-mipi-dsi",
- .data = &rk3399_mipi_dsi_drv_data,
- },
- { /* sentinel */ }
-};
-MODULE_DEVICE_TABLE(of, dw_mipi_dsi_dt_ids);
-
-static int dw_mipi_dsi_bind(struct device *dev, struct device *master,
- void *data)
-{
- const struct of_device_id *of_id =
- of_match_device(dw_mipi_dsi_dt_ids, dev);
- const struct dw_mipi_dsi_plat_data *pdata = of_id->data;
- struct platform_device *pdev = to_platform_device(dev);
- struct reset_control *apb_rst;
- struct drm_device *drm = data;
- struct dw_mipi_dsi *dsi;
- struct resource *res;
- int ret;
-
- dsi = devm_kzalloc(dev, sizeof(*dsi), GFP_KERNEL);
- if (!dsi)
- return -ENOMEM;
-
- dsi->dev = dev;
- dsi->pdata = pdata;
- dsi->dpms_mode = DRM_MODE_DPMS_OFF;
-
- ret = rockchip_mipi_parse_dt(dsi);
- if (ret)
- return ret;
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- dsi->base = devm_ioremap_resource(dev, res);
- if (IS_ERR(dsi->base))
- return PTR_ERR(dsi->base);
-
- dsi->pllref_clk = devm_clk_get(dev, "ref");
- if (IS_ERR(dsi->pllref_clk)) {
- ret = PTR_ERR(dsi->pllref_clk);
- DRM_DEV_ERROR(dev,
- "Unable to get pll reference clock: %d\n", ret);
- return ret;
- }
-
- dsi->pclk = devm_clk_get(dev, "pclk");
- if (IS_ERR(dsi->pclk)) {
- ret = PTR_ERR(dsi->pclk);
- DRM_DEV_ERROR(dev, "Unable to get pclk: %d\n", ret);
- return ret;
- }
-
- /*
- * Note that the reset was not defined in the initial device tree, so
- * we have to be prepared for it not being found.
- */
- apb_rst = devm_reset_control_get(dev, "apb");
- if (IS_ERR(apb_rst)) {
- ret = PTR_ERR(apb_rst);
- if (ret == -ENOENT) {
- apb_rst = NULL;
- } else {
- DRM_DEV_ERROR(dev,
- "Unable to get reset control: %d\n", ret);
- return ret;
- }
- }
-
- if (apb_rst) {
- ret = clk_prepare_enable(dsi->pclk);
- if (ret) {
- DRM_DEV_ERROR(dev, "Failed to enable pclk\n");
- return ret;
- }
-
- reset_control_assert(apb_rst);
- usleep_range(10, 20);
- reset_control_deassert(apb_rst);
-
- clk_disable_unprepare(dsi->pclk);
- }
-
- if (pdata->flags & DW_MIPI_NEEDS_PHY_CFG_CLK) {
- dsi->phy_cfg_clk = devm_clk_get(dev, "phy_cfg");
- if (IS_ERR(dsi->phy_cfg_clk)) {
- ret = PTR_ERR(dsi->phy_cfg_clk);
- DRM_DEV_ERROR(dev,
- "Unable to get phy_cfg_clk: %d\n", ret);
- return ret;
- }
- }
-
- if (pdata->flags & DW_MIPI_NEEDS_GRF_CLK) {
- dsi->grf_clk = devm_clk_get(dev, "grf");
- if (IS_ERR(dsi->grf_clk)) {
- ret = PTR_ERR(dsi->grf_clk);
- DRM_DEV_ERROR(dev, "Unable to get grf_clk: %d\n", ret);
- return ret;
- }
- }
-
- ret = clk_prepare_enable(dsi->pllref_clk);
- if (ret) {
- DRM_DEV_ERROR(dev, "Failed to enable pllref_clk\n");
- return ret;
- }
-
- ret = dw_mipi_dsi_register(drm, dsi);
- if (ret) {
- DRM_DEV_ERROR(dev, "Failed to register mipi_dsi: %d\n", ret);
- goto err_pllref;
- }
-
- dsi->dsi_host.ops = &dw_mipi_dsi_host_ops;
- dsi->dsi_host.dev = dev;
- ret = mipi_dsi_host_register(&dsi->dsi_host);
- if (ret) {
- DRM_DEV_ERROR(dev, "Failed to register MIPI host: %d\n", ret);
- goto err_cleanup;
- }
-
- if (!dsi->panel) {
- ret = -EPROBE_DEFER;
- goto err_mipi_dsi_host;
- }
-
- dev_set_drvdata(dev, dsi);
- pm_runtime_enable(dev);
- return 0;
-
-err_mipi_dsi_host:
- mipi_dsi_host_unregister(&dsi->dsi_host);
-err_cleanup:
- dsi->connector.funcs->destroy(&dsi->connector);
- dsi->encoder.funcs->destroy(&dsi->encoder);
-err_pllref:
- clk_disable_unprepare(dsi->pllref_clk);
- return ret;
-}
-
-static void dw_mipi_dsi_unbind(struct device *dev, struct device *master,
- void *data)
-{
- struct dw_mipi_dsi *dsi = dev_get_drvdata(dev);
-
- mipi_dsi_host_unregister(&dsi->dsi_host);
- pm_runtime_disable(dev);
-
- dsi->connector.funcs->destroy(&dsi->connector);
- dsi->encoder.funcs->destroy(&dsi->encoder);
-
- clk_disable_unprepare(dsi->pllref_clk);
-}
-
-static const struct component_ops dw_mipi_dsi_ops = {
- .bind = dw_mipi_dsi_bind,
- .unbind = dw_mipi_dsi_unbind,
-};
-
-static int dw_mipi_dsi_probe(struct platform_device *pdev)
-{
- return component_add(&pdev->dev, &dw_mipi_dsi_ops);
-}
-
-static int dw_mipi_dsi_remove(struct platform_device *pdev)
-{
- component_del(&pdev->dev, &dw_mipi_dsi_ops);
- return 0;
-}
-
-struct platform_driver dw_mipi_dsi_driver = {
- .probe = dw_mipi_dsi_probe,
- .remove = dw_mipi_dsi_remove,
- .driver = {
- .of_match_table = dw_mipi_dsi_dt_ids,
- .name = DRIVER_NAME,
- },
-};