| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Xin Ji | 12157 | 91.60% | 15 | 30.61% |
| Hsin-Yi, Wang | 721 | 5.43% | 9 | 18.37% |
| Peter Shih | 206 | 1.55% | 4 | 8.16% |
| Miaoqian Lin | 58 | 0.44% | 1 | 2.04% |
| Maxime Ripard | 44 | 0.33% | 2 | 4.08% |
| José Expósito | 18 | 0.14% | 1 | 2.04% |
| Marek Vašut | 11 | 0.08% | 2 | 4.08% |
| Tom Rix | 11 | 0.08% | 1 | 2.04% |
| Nícolas F. R. A. Prado | 10 | 0.08% | 2 | 4.08% |
| Liang He | 7 | 0.05% | 1 | 2.04% |
| Yu Jiahua | 7 | 0.05% | 1 | 2.04% |
| Thomas Zimmermann | 6 | 0.05% | 2 | 4.08% |
| Robert Foss | 6 | 0.05% | 2 | 4.08% |
| Yang Yingliang | 3 | 0.02% | 1 | 2.04% |
| Rex-BC Chen | 2 | 0.02% | 1 | 2.04% |
| Pin-Yen Lin | 2 | 0.02% | 1 | 2.04% |
| Uwe Kleine-König | 2 | 0.02% | 2 | 4.08% |
| owen | 1 | 0.01% | 1 | 2.04% |
| Total | 13272 | 49 |
// SPDX-License-Identifier: GPL-2.0-only /* * Copyright(c) 2020, Analogix Semiconductor. All rights reserved. * */ #include <linux/gcd.h> #include <linux/gpio/consumer.h> #include <linux/i2c.h> #include <linux/interrupt.h> #include <linux/iopoll.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/mutex.h> #include <linux/pm_runtime.h> #include <linux/regulator/consumer.h> #include <linux/slab.h> #include <linux/types.h> #include <linux/workqueue.h> #include <linux/of_gpio.h> #include <linux/of_graph.h> #include <linux/of_platform.h> #include <drm/display/drm_dp_aux_bus.h> #include <drm/display/drm_dp_helper.h> #include <drm/display/drm_hdcp_helper.h> #include <drm/drm_atomic_helper.h> #include <drm/drm_bridge.h> #include <drm/drm_edid.h> #include <drm/drm_mipi_dsi.h> #include <drm/drm_of.h> #include <drm/drm_panel.h> #include <drm/drm_print.h> #include <drm/drm_probe_helper.h> #include <media/v4l2-fwnode.h> #include <sound/hdmi-codec.h> #include <video/display_timing.h> #include "anx7625.h" /* * There is a sync issue while access I2C register between AP(CPU) and * internal firmware(OCM), to avoid the race condition, AP should access * the reserved slave address before slave address occurs changes. */ static int i2c_access_workaround(struct anx7625_data *ctx, struct i2c_client *client) { u8 offset; struct device *dev = &client->dev; int ret; if (client == ctx->last_client) return 0; ctx->last_client = client; if (client == ctx->i2c.tcpc_client) offset = RSVD_00_ADDR; else if (client == ctx->i2c.tx_p0_client) offset = RSVD_D1_ADDR; else if (client == ctx->i2c.tx_p1_client) offset = RSVD_60_ADDR; else if (client == ctx->i2c.rx_p0_client) offset = RSVD_39_ADDR; else if (client == ctx->i2c.rx_p1_client) offset = RSVD_7F_ADDR; else offset = RSVD_00_ADDR; ret = i2c_smbus_write_byte_data(client, offset, 0x00); if (ret < 0) DRM_DEV_ERROR(dev, "fail to access i2c id=%x\n:%x", client->addr, offset); return ret; } static int anx7625_reg_read(struct anx7625_data *ctx, struct i2c_client *client, u8 reg_addr) { int ret; struct device *dev = &client->dev; i2c_access_workaround(ctx, client); ret = i2c_smbus_read_byte_data(client, reg_addr); if (ret < 0) DRM_DEV_ERROR(dev, "read i2c fail id=%x:%x\n", client->addr, reg_addr); return ret; } static int anx7625_reg_block_read(struct anx7625_data *ctx, struct i2c_client *client, u8 reg_addr, u8 len, u8 *buf) { int ret; struct device *dev = &client->dev; i2c_access_workaround(ctx, client); ret = i2c_smbus_read_i2c_block_data(client, reg_addr, len, buf); if (ret < 0) DRM_DEV_ERROR(dev, "read i2c block fail id=%x:%x\n", client->addr, reg_addr); return ret; } static int anx7625_reg_write(struct anx7625_data *ctx, struct i2c_client *client, u8 reg_addr, u8 reg_val) { int ret; struct device *dev = &client->dev; i2c_access_workaround(ctx, client); ret = i2c_smbus_write_byte_data(client, reg_addr, reg_val); if (ret < 0) DRM_DEV_ERROR(dev, "fail to write i2c id=%x\n:%x", client->addr, reg_addr); return ret; } static int anx7625_reg_block_write(struct anx7625_data *ctx, struct i2c_client *client, u8 reg_addr, u8 len, u8 *buf) { int ret; struct device *dev = &client->dev; i2c_access_workaround(ctx, client); ret = i2c_smbus_write_i2c_block_data(client, reg_addr, len, buf); if (ret < 0) dev_err(dev, "write i2c block failed id=%x\n:%x", client->addr, reg_addr); return ret; } static int anx7625_write_or(struct anx7625_data *ctx, struct i2c_client *client, u8 offset, u8 mask) { int val; val = anx7625_reg_read(ctx, client, offset); if (val < 0) return val; return anx7625_reg_write(ctx, client, offset, (val | (mask))); } static int anx7625_write_and(struct anx7625_data *ctx, struct i2c_client *client, u8 offset, u8 mask) { int val; val = anx7625_reg_read(ctx, client, offset); if (val < 0) return val; return anx7625_reg_write(ctx, client, offset, (val & (mask))); } static int anx7625_write_and_or(struct anx7625_data *ctx, struct i2c_client *client, u8 offset, u8 and_mask, u8 or_mask) { int val; val = anx7625_reg_read(ctx, client, offset); if (val < 0) return val; return anx7625_reg_write(ctx, client, offset, (val & and_mask) | (or_mask)); } static int anx7625_config_bit_matrix(struct anx7625_data *ctx) { int i, ret; ret = anx7625_write_or(ctx, ctx->i2c.tx_p2_client, AUDIO_CONTROL_REGISTER, 0x80); for (i = 0; i < 13; i++) ret |= anx7625_reg_write(ctx, ctx->i2c.tx_p2_client, VIDEO_BIT_MATRIX_12 + i, 0x18 + i); return ret; } static int anx7625_read_ctrl_status_p0(struct anx7625_data *ctx) { return anx7625_reg_read(ctx, ctx->i2c.rx_p0_client, AP_AUX_CTRL_STATUS); } static int wait_aux_op_finish(struct anx7625_data *ctx) { struct device *dev = &ctx->client->dev; int val; int ret; ret = readx_poll_timeout(anx7625_read_ctrl_status_p0, ctx, val, (!(val & AP_AUX_CTRL_OP_EN) || (val < 0)), 2000, 2000 * 150); if (ret) { DRM_DEV_ERROR(dev, "aux operation fail!\n"); return -EIO; } val = anx7625_reg_read(ctx, ctx->i2c.rx_p0_client, AP_AUX_CTRL_STATUS); if (val < 0 || (val & 0x0F)) { DRM_DEV_ERROR(dev, "aux status %02x\n", val); return -EIO; } return 0; } static int anx7625_aux_trans(struct anx7625_data *ctx, u8 op, u32 address, u8 len, u8 *buf) { struct device *dev = &ctx->client->dev; int ret; u8 addrh, addrm, addrl; u8 cmd; bool is_write = !(op & DP_AUX_I2C_READ); if (len > DP_AUX_MAX_PAYLOAD_BYTES) { dev_err(dev, "exceed aux buffer len.\n"); return -EINVAL; } if (!len) return len; addrl = address & 0xFF; addrm = (address >> 8) & 0xFF; addrh = (address >> 16) & 0xFF; if (!is_write) op &= ~DP_AUX_I2C_MOT; cmd = DPCD_CMD(len, op); /* Set command and length */ ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, AP_AUX_COMMAND, cmd); /* Set aux access address */ ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, AP_AUX_ADDR_7_0, addrl); ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, AP_AUX_ADDR_15_8, addrm); ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, AP_AUX_ADDR_19_16, addrh); if (is_write) ret |= anx7625_reg_block_write(ctx, ctx->i2c.rx_p0_client, AP_AUX_BUFF_START, len, buf); /* Enable aux access */ ret |= anx7625_write_or(ctx, ctx->i2c.rx_p0_client, AP_AUX_CTRL_STATUS, AP_AUX_CTRL_OP_EN); if (ret < 0) { dev_err(dev, "cannot access aux related register.\n"); return -EIO; } ret = wait_aux_op_finish(ctx); if (ret < 0) { dev_err(dev, "aux IO error: wait aux op finish.\n"); return ret; } /* Write done */ if (is_write) return len; /* Read done, read out dpcd data */ ret = anx7625_reg_block_read(ctx, ctx->i2c.rx_p0_client, AP_AUX_BUFF_START, len, buf); if (ret < 0) { dev_err(dev, "read dpcd register failed\n"); return -EIO; } return len; } static int anx7625_video_mute_control(struct anx7625_data *ctx, u8 status) { int ret; if (status) { /* Set mute on flag */ ret = anx7625_write_or(ctx, ctx->i2c.rx_p0_client, AP_AV_STATUS, AP_MIPI_MUTE); /* Clear mipi RX en */ ret |= anx7625_write_and(ctx, ctx->i2c.rx_p0_client, AP_AV_STATUS, (u8)~AP_MIPI_RX_EN); } else { /* Mute off flag */ ret = anx7625_write_and(ctx, ctx->i2c.rx_p0_client, AP_AV_STATUS, (u8)~AP_MIPI_MUTE); /* Set MIPI RX EN */ ret |= anx7625_write_or(ctx, ctx->i2c.rx_p0_client, AP_AV_STATUS, AP_MIPI_RX_EN); } return ret; } /* Reduction of fraction a/b */ static void anx7625_reduction_of_a_fraction(unsigned long *a, unsigned long *b) { unsigned long gcd_num; unsigned long tmp_a, tmp_b; u32 i = 1; gcd_num = gcd(*a, *b); *a /= gcd_num; *b /= gcd_num; tmp_a = *a; tmp_b = *b; while ((*a > MAX_UNSIGNED_24BIT) || (*b > MAX_UNSIGNED_24BIT)) { i++; *a = tmp_a / i; *b = tmp_b / i; } /* * In the end, make a, b larger to have higher ODFC PLL * output frequency accuracy */ while ((*a < MAX_UNSIGNED_24BIT) && (*b < MAX_UNSIGNED_24BIT)) { *a <<= 1; *b <<= 1; } *a >>= 1; *b >>= 1; } static int anx7625_calculate_m_n(u32 pixelclock, unsigned long *m, unsigned long *n, u8 *post_divider) { if (pixelclock > PLL_OUT_FREQ_ABS_MAX / POST_DIVIDER_MIN) { /* Pixel clock frequency is too high */ DRM_ERROR("pixelclock too high, act(%d), maximum(%lu)\n", pixelclock, PLL_OUT_FREQ_ABS_MAX / POST_DIVIDER_MIN); return -EINVAL; } if (pixelclock < PLL_OUT_FREQ_ABS_MIN / POST_DIVIDER_MAX) { /* Pixel clock frequency is too low */ DRM_ERROR("pixelclock too low, act(%d), maximum(%lu)\n", pixelclock, PLL_OUT_FREQ_ABS_MIN / POST_DIVIDER_MAX); return -EINVAL; } for (*post_divider = 1; pixelclock < (PLL_OUT_FREQ_MIN / (*post_divider));) *post_divider += 1; if (*post_divider > POST_DIVIDER_MAX) { for (*post_divider = 1; (pixelclock < (PLL_OUT_FREQ_ABS_MIN / (*post_divider)));) *post_divider += 1; if (*post_divider > POST_DIVIDER_MAX) { DRM_ERROR("cannot find property post_divider(%d)\n", *post_divider); return -EDOM; } } /* Patch to improve the accuracy */ if (*post_divider == 7) { /* 27,000,000 is not divisible by 7 */ *post_divider = 8; } else if (*post_divider == 11) { /* 27,000,000 is not divisible by 11 */ *post_divider = 12; } else if ((*post_divider == 13) || (*post_divider == 14)) { /* 27,000,000 is not divisible by 13 or 14 */ *post_divider = 15; } if (pixelclock * (*post_divider) > PLL_OUT_FREQ_ABS_MAX) { DRM_ERROR("act clock(%u) large than maximum(%lu)\n", pixelclock * (*post_divider), PLL_OUT_FREQ_ABS_MAX); return -EDOM; } *m = pixelclock; *n = XTAL_FRQ / (*post_divider); anx7625_reduction_of_a_fraction(m, n); return 0; } static int anx7625_odfc_config(struct anx7625_data *ctx, u8 post_divider) { int ret; struct device *dev = &ctx->client->dev; /* Config input reference clock frequency 27MHz/19.2MHz */ ret = anx7625_write_and(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_16, ~(REF_CLK_27000KHZ << MIPI_FREF_D_IND)); ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_16, (REF_CLK_27000KHZ << MIPI_FREF_D_IND)); /* Post divider */ ret |= anx7625_write_and(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_8, 0x0f); ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_8, post_divider << 4); /* Add patch for MIS2-125 (5pcs ANX7625 fail ATE MBIST test) */ ret |= anx7625_write_and(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_7, ~MIPI_PLL_VCO_TUNE_REG_VAL); /* Reset ODFC PLL */ ret |= anx7625_write_and(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_7, ~MIPI_PLL_RESET_N); ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_7, MIPI_PLL_RESET_N); if (ret < 0) DRM_DEV_ERROR(dev, "IO error.\n"); return ret; } /* * The MIPI source video data exist large variation (e.g. 59Hz ~ 61Hz), * anx7625 defined K ratio for matching MIPI input video clock and * DP output video clock. Increase K value can match bigger video data * variation. IVO panel has small variation than DP CTS spec, need * decrease the K value. */ static int anx7625_set_k_value(struct anx7625_data *ctx) { struct edid *edid = (struct edid *)ctx->slimport_edid_p.edid_raw_data; if (edid->mfg_id[0] == IVO_MID0 && edid->mfg_id[1] == IVO_MID1) return anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_ADJ_1, 0x3B); return anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_ADJ_1, 0x3D); } static int anx7625_dsi_video_timing_config(struct anx7625_data *ctx) { struct device *dev = &ctx->client->dev; unsigned long m, n; u16 htotal; int ret; u8 post_divider = 0; ret = anx7625_calculate_m_n(ctx->dt.pixelclock.min * 1000, &m, &n, &post_divider); if (ret) { DRM_DEV_ERROR(dev, "cannot get property m n value.\n"); return ret; } DRM_DEV_DEBUG_DRIVER(dev, "compute M(%lu), N(%lu), divider(%d).\n", m, n, post_divider); /* Configure pixel clock */ ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, PIXEL_CLOCK_L, (ctx->dt.pixelclock.min / 1000) & 0xFF); ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, PIXEL_CLOCK_H, (ctx->dt.pixelclock.min / 1000) >> 8); /* Lane count */ ret |= anx7625_write_and(ctx, ctx->i2c.rx_p1_client, MIPI_LANE_CTRL_0, 0xfc); ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, MIPI_LANE_CTRL_0, ctx->pdata.mipi_lanes - 1); /* Htotal */ htotal = ctx->dt.hactive.min + ctx->dt.hfront_porch.min + ctx->dt.hback_porch.min + ctx->dt.hsync_len.min; ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, HORIZONTAL_TOTAL_PIXELS_L, htotal & 0xFF); ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, HORIZONTAL_TOTAL_PIXELS_H, htotal >> 8); /* Hactive */ ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, HORIZONTAL_ACTIVE_PIXELS_L, ctx->dt.hactive.min & 0xFF); ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, HORIZONTAL_ACTIVE_PIXELS_H, ctx->dt.hactive.min >> 8); /* HFP */ ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, HORIZONTAL_FRONT_PORCH_L, ctx->dt.hfront_porch.min); ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, HORIZONTAL_FRONT_PORCH_H, ctx->dt.hfront_porch.min >> 8); /* HWS */ ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, HORIZONTAL_SYNC_WIDTH_L, ctx->dt.hsync_len.min); ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, HORIZONTAL_SYNC_WIDTH_H, ctx->dt.hsync_len.min >> 8); /* HBP */ ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, HORIZONTAL_BACK_PORCH_L, ctx->dt.hback_porch.min); ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, HORIZONTAL_BACK_PORCH_H, ctx->dt.hback_porch.min >> 8); /* Vactive */ ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, ACTIVE_LINES_L, ctx->dt.vactive.min); ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, ACTIVE_LINES_H, ctx->dt.vactive.min >> 8); /* VFP */ ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, VERTICAL_FRONT_PORCH, ctx->dt.vfront_porch.min); /* VWS */ ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, VERTICAL_SYNC_WIDTH, ctx->dt.vsync_len.min); /* VBP */ ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, VERTICAL_BACK_PORCH, ctx->dt.vback_porch.min); /* M value */ ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, MIPI_PLL_M_NUM_23_16, (m >> 16) & 0xff); ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, MIPI_PLL_M_NUM_15_8, (m >> 8) & 0xff); ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, MIPI_PLL_M_NUM_7_0, (m & 0xff)); /* N value */ ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, MIPI_PLL_N_NUM_23_16, (n >> 16) & 0xff); ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, MIPI_PLL_N_NUM_15_8, (n >> 8) & 0xff); ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, MIPI_PLL_N_NUM_7_0, (n & 0xff)); anx7625_set_k_value(ctx); ret |= anx7625_odfc_config(ctx, post_divider - 1); if (ret < 0) DRM_DEV_ERROR(dev, "mipi dsi setup IO error.\n"); return ret; } static int anx7625_swap_dsi_lane3(struct anx7625_data *ctx) { int val; struct device *dev = &ctx->client->dev; /* Swap MIPI-DSI data lane 3 P and N */ val = anx7625_reg_read(ctx, ctx->i2c.rx_p1_client, MIPI_SWAP); if (val < 0) { DRM_DEV_ERROR(dev, "IO error : access MIPI_SWAP.\n"); return -EIO; } val |= (1 << MIPI_SWAP_CH3); return anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, MIPI_SWAP, val); } static int anx7625_api_dsi_config(struct anx7625_data *ctx) { int val, ret; struct device *dev = &ctx->client->dev; /* Swap MIPI-DSI data lane 3 P and N */ ret = anx7625_swap_dsi_lane3(ctx); if (ret < 0) { DRM_DEV_ERROR(dev, "IO error : swap dsi lane 3 fail.\n"); return ret; } /* DSI clock settings */ val = (0 << MIPI_HS_PWD_CLK) | (0 << MIPI_HS_RT_CLK) | (0 << MIPI_PD_CLK) | (1 << MIPI_CLK_RT_MANUAL_PD_EN) | (1 << MIPI_CLK_HS_MANUAL_PD_EN) | (0 << MIPI_CLK_DET_DET_BYPASS) | (0 << MIPI_CLK_MISS_CTRL) | (0 << MIPI_PD_LPTX_CH_MANUAL_PD_EN); ret = anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, MIPI_PHY_CONTROL_3, val); /* * Decreased HS prepare timing delay from 160ns to 80ns work with * a) Dragon board 810 series (Qualcomm AP) * b) Moving Pixel DSI source (PG3A pattern generator + * P332 D-PHY Probe) default D-PHY timing * 5ns/step */ ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, MIPI_TIME_HS_PRPR, 0x10); /* Enable DSI mode*/ ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_18, SELECT_DSI << MIPI_DPI_SELECT); ret |= anx7625_dsi_video_timing_config(ctx); if (ret < 0) { DRM_DEV_ERROR(dev, "dsi video timing config fail\n"); return ret; } /* Toggle m, n ready */ ret = anx7625_write_and(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_6, ~(MIPI_M_NUM_READY | MIPI_N_NUM_READY)); usleep_range(1000, 1100); ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_6, MIPI_M_NUM_READY | MIPI_N_NUM_READY); /* Configure integer stable register */ ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, MIPI_VIDEO_STABLE_CNT, 0x02); /* Power on MIPI RX */ ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, MIPI_LANE_CTRL_10, 0x00); ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, MIPI_LANE_CTRL_10, 0x80); if (ret < 0) DRM_DEV_ERROR(dev, "IO error : mipi dsi enable init fail.\n"); return ret; } static int anx7625_dsi_config(struct anx7625_data *ctx) { struct device *dev = &ctx->client->dev; int ret; DRM_DEV_DEBUG_DRIVER(dev, "config dsi.\n"); /* DSC disable */ ret = anx7625_write_and(ctx, ctx->i2c.rx_p0_client, R_DSC_CTRL_0, ~DSC_EN); ret |= anx7625_api_dsi_config(ctx); if (ret < 0) { DRM_DEV_ERROR(dev, "IO error : api dsi config error.\n"); return ret; } /* Set MIPI RX EN */ ret = anx7625_write_or(ctx, ctx->i2c.rx_p0_client, AP_AV_STATUS, AP_MIPI_RX_EN); /* Clear mute flag */ ret |= anx7625_write_and(ctx, ctx->i2c.rx_p0_client, AP_AV_STATUS, (u8)~AP_MIPI_MUTE); if (ret < 0) DRM_DEV_ERROR(dev, "IO error : enable mipi rx fail.\n"); else DRM_DEV_DEBUG_DRIVER(dev, "success to config DSI\n"); return ret; } static int anx7625_api_dpi_config(struct anx7625_data *ctx) { struct device *dev = &ctx->client->dev; u16 freq = ctx->dt.pixelclock.min / 1000; int ret; /* configure pixel clock */ ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, PIXEL_CLOCK_L, freq & 0xFF); ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, PIXEL_CLOCK_H, (freq >> 8)); /* set DPI mode */ /* set to DPI PLL module sel */ ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_9, 0x20); /* power down MIPI */ ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, MIPI_LANE_CTRL_10, 0x08); /* enable DPI mode */ ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_18, 0x1C); /* set first edge */ ret |= anx7625_reg_write(ctx, ctx->i2c.tx_p2_client, VIDEO_CONTROL_0, 0x06); if (ret < 0) DRM_DEV_ERROR(dev, "IO error : dpi phy set failed.\n"); return ret; } static int anx7625_dpi_config(struct anx7625_data *ctx) { struct device *dev = &ctx->client->dev; int ret; DRM_DEV_DEBUG_DRIVER(dev, "config dpi\n"); /* DSC disable */ ret = anx7625_write_and(ctx, ctx->i2c.rx_p0_client, R_DSC_CTRL_0, ~DSC_EN); if (ret < 0) { DRM_DEV_ERROR(dev, "IO error : disable dsc failed.\n"); return ret; } ret = anx7625_config_bit_matrix(ctx); if (ret < 0) { DRM_DEV_ERROR(dev, "config bit matrix failed.\n"); return ret; } ret = anx7625_api_dpi_config(ctx); if (ret < 0) { DRM_DEV_ERROR(dev, "mipi phy(dpi) setup failed.\n"); return ret; } /* set MIPI RX EN */ ret = anx7625_write_or(ctx, ctx->i2c.rx_p0_client, AP_AV_STATUS, AP_MIPI_RX_EN); /* clear mute flag */ ret |= anx7625_write_and(ctx, ctx->i2c.rx_p0_client, AP_AV_STATUS, (u8)~AP_MIPI_MUTE); if (ret < 0) DRM_DEV_ERROR(dev, "IO error : enable mipi rx failed.\n"); return ret; } static int anx7625_read_flash_status(struct anx7625_data *ctx) { return anx7625_reg_read(ctx, ctx->i2c.rx_p0_client, R_RAM_CTRL); } static int anx7625_hdcp_key_probe(struct anx7625_data *ctx) { int ret, val; struct device *dev = &ctx->client->dev; u8 ident[FLASH_BUF_LEN]; ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, FLASH_ADDR_HIGH, 0x91); ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, FLASH_ADDR_LOW, 0xA0); if (ret < 0) { dev_err(dev, "IO error : set key flash address.\n"); return ret; } ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, FLASH_LEN_HIGH, (FLASH_BUF_LEN - 1) >> 8); ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, FLASH_LEN_LOW, (FLASH_BUF_LEN - 1) & 0xFF); if (ret < 0) { dev_err(dev, "IO error : set key flash len.\n"); return ret; } ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, R_FLASH_RW_CTRL, FLASH_READ); ret |= readx_poll_timeout(anx7625_read_flash_status, ctx, val, ((val & FLASH_DONE) || (val < 0)), 2000, 2000 * 150); if (ret) { dev_err(dev, "flash read access fail!\n"); return -EIO; } ret = anx7625_reg_block_read(ctx, ctx->i2c.rx_p0_client, FLASH_BUF_BASE_ADDR, FLASH_BUF_LEN, ident); if (ret < 0) { dev_err(dev, "read flash data fail!\n"); return -EIO; } if (ident[29] == 0xFF && ident[30] == 0xFF && ident[31] == 0xFF) return -EINVAL; return 0; } static int anx7625_hdcp_key_load(struct anx7625_data *ctx) { int ret; struct device *dev = &ctx->client->dev; /* Select HDCP 1.4 KEY */ ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, R_BOOT_RETRY, 0x12); ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, FLASH_ADDR_HIGH, HDCP14KEY_START_ADDR >> 8); ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, FLASH_ADDR_LOW, HDCP14KEY_START_ADDR & 0xFF); ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, R_RAM_LEN_H, HDCP14KEY_SIZE >> 12); ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, R_RAM_LEN_L, HDCP14KEY_SIZE >> 4); ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, R_RAM_ADDR_H, 0); ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, R_RAM_ADDR_L, 0); /* Enable HDCP 1.4 KEY load */ ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, R_RAM_CTRL, DECRYPT_EN | LOAD_START); dev_dbg(dev, "load HDCP 1.4 key done\n"); return ret; } static int anx7625_hdcp_disable(struct anx7625_data *ctx) { int ret; struct device *dev = &ctx->client->dev; dev_dbg(dev, "disable HDCP 1.4\n"); /* Disable HDCP */ ret = anx7625_write_and(ctx, ctx->i2c.rx_p1_client, 0xee, 0x9f); /* Try auth flag */ ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, 0xec, 0x10); /* Interrupt for DRM */ ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, 0xff, 0x01); if (ret < 0) dev_err(dev, "fail to disable HDCP\n"); return anx7625_write_and(ctx, ctx->i2c.tx_p0_client, TX_HDCP_CTRL0, ~HARD_AUTH_EN & 0xFF); } static int anx7625_hdcp_enable(struct anx7625_data *ctx) { u8 bcap; int ret; struct device *dev = &ctx->client->dev; ret = anx7625_hdcp_key_probe(ctx); if (ret) { dev_dbg(dev, "no key found, not to do hdcp\n"); return ret; } /* Read downstream capability */ ret = anx7625_aux_trans(ctx, DP_AUX_NATIVE_READ, 0x68028, 1, &bcap); if (ret < 0) return ret; if (!(bcap & 0x01)) { pr_warn("downstream not support HDCP 1.4, cap(%x).\n", bcap); return 0; } dev_dbg(dev, "enable HDCP 1.4\n"); /* First clear HDCP state */ ret = anx7625_reg_write(ctx, ctx->i2c.tx_p0_client, TX_HDCP_CTRL0, KSVLIST_VLD | BKSV_SRM_PASS | RE_AUTHEN); usleep_range(1000, 1100); /* Second clear HDCP state */ ret |= anx7625_reg_write(ctx, ctx->i2c.tx_p0_client, TX_HDCP_CTRL0, KSVLIST_VLD | BKSV_SRM_PASS | RE_AUTHEN); /* Set time for waiting KSVR */ ret |= anx7625_reg_write(ctx, ctx->i2c.tx_p0_client, SP_TX_WAIT_KSVR_TIME, 0xc8); /* Set time for waiting R0 */ ret |= anx7625_reg_write(ctx, ctx->i2c.tx_p0_client, SP_TX_WAIT_R0_TIME, 0xb0); ret |= anx7625_hdcp_key_load(ctx); if (ret) { pr_warn("prepare HDCP key failed.\n"); return ret; } ret = anx7625_write_or(ctx, ctx->i2c.rx_p1_client, 0xee, 0x20); /* Try auth flag */ ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, 0xec, 0x10); /* Interrupt for DRM */ ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, 0xff, 0x01); if (ret < 0) dev_err(dev, "fail to enable HDCP\n"); return anx7625_write_or(ctx, ctx->i2c.tx_p0_client, TX_HDCP_CTRL0, HARD_AUTH_EN); } static void anx7625_dp_start(struct anx7625_data *ctx) { int ret; struct device *dev = &ctx->client->dev; u8 data; if (!ctx->display_timing_valid) { DRM_DEV_ERROR(dev, "mipi not set display timing yet.\n"); return; } dev_dbg(dev, "set downstream sink into normal\n"); /* Downstream sink enter into normal mode */ data = 1; ret = anx7625_aux_trans(ctx, DP_AUX_NATIVE_WRITE, 0x000600, 1, &data); if (ret < 0) dev_err(dev, "IO error : set sink into normal mode fail\n"); /* Disable HDCP */ anx7625_write_and(ctx, ctx->i2c.rx_p1_client, 0xee, 0x9f); if (ctx->pdata.is_dpi) ret = anx7625_dpi_config(ctx); else ret = anx7625_dsi_config(ctx); if (ret < 0) DRM_DEV_ERROR(dev, "MIPI phy setup error.\n"); ctx->hdcp_cp = DRM_MODE_CONTENT_PROTECTION_UNDESIRED; ctx->dp_en = 1; } static void anx7625_dp_stop(struct anx7625_data *ctx) { struct device *dev = &ctx->client->dev; int ret; u8 data; DRM_DEV_DEBUG_DRIVER(dev, "stop dp output\n"); /* * Video disable: 0x72:08 bit 7 = 0; * Audio disable: 0x70:87 bit 0 = 0; */ ret = anx7625_write_and(ctx, ctx->i2c.tx_p0_client, 0x87, 0xfe); ret |= anx7625_write_and(ctx, ctx->i2c.tx_p2_client, 0x08, 0x7f); ret |= anx7625_video_mute_control(ctx, 1); dev_dbg(dev, "notify downstream enter into standby\n"); /* Downstream monitor enter into standby mode */ data = 2; ret |= anx7625_aux_trans(ctx, DP_AUX_NATIVE_WRITE, 0x000600, 1, &data); if (ret < 0) DRM_DEV_ERROR(dev, "IO error : mute video fail\n"); ctx->hdcp_cp = DRM_MODE_CONTENT_PROTECTION_UNDESIRED; ctx->dp_en = 0; } static int sp_tx_rst_aux(struct anx7625_data *ctx) { int ret; ret = anx7625_write_or(ctx, ctx->i2c.tx_p2_client, RST_CTRL2, AUX_RST); ret |= anx7625_write_and(ctx, ctx->i2c.tx_p2_client, RST_CTRL2, ~AUX_RST); return ret; } static int sp_tx_aux_wr(struct anx7625_data *ctx, u8 offset) { int ret; ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, AP_AUX_BUFF_START, offset); ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, AP_AUX_COMMAND, 0x04); ret |= anx7625_write_or(ctx, ctx->i2c.rx_p0_client, AP_AUX_CTRL_STATUS, AP_AUX_CTRL_OP_EN); return (ret | wait_aux_op_finish(ctx)); } static int sp_tx_aux_rd(struct anx7625_data *ctx, u8 len_cmd) { int ret; ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, AP_AUX_COMMAND, len_cmd); ret |= anx7625_write_or(ctx, ctx->i2c.rx_p0_client, AP_AUX_CTRL_STATUS, AP_AUX_CTRL_OP_EN); return (ret | wait_aux_op_finish(ctx)); } static int sp_tx_get_edid_block(struct anx7625_data *ctx) { int c = 0; struct device *dev = &ctx->client->dev; sp_tx_aux_wr(ctx, 0x7e); sp_tx_aux_rd(ctx, 0x01); c = anx7625_reg_read(ctx, ctx->i2c.rx_p0_client, AP_AUX_BUFF_START); if (c < 0) { DRM_DEV_ERROR(dev, "IO error : access AUX BUFF.\n"); return -EIO; } DRM_DEV_DEBUG_DRIVER(dev, " EDID Block = %d\n", c + 1); if (c > MAX_EDID_BLOCK) c = 1; return c; } static int edid_read(struct anx7625_data *ctx, u8 offset, u8 *pblock_buf) { int ret, cnt; struct device *dev = &ctx->client->dev; for (cnt = 0; cnt <= EDID_TRY_CNT; cnt++) { sp_tx_aux_wr(ctx, offset); /* Set I2C read com 0x01 mot = 0 and read 16 bytes */ ret = sp_tx_aux_rd(ctx, 0xf1); if (ret) { ret = sp_tx_rst_aux(ctx); DRM_DEV_DEBUG_DRIVER(dev, "edid read fail, reset!\n"); } else { ret = anx7625_reg_block_read(ctx, ctx->i2c.rx_p0_client, AP_AUX_BUFF_START, MAX_DPCD_BUFFER_SIZE, pblock_buf); if (ret > 0) break; } } if (cnt > EDID_TRY_CNT) return -EIO; return ret; } static int segments_edid_read(struct anx7625_data *ctx, u8 segment, u8 *buf, u8 offset) { u8 cnt; int ret; struct device *dev = &ctx->client->dev; /* Write address only */ ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, AP_AUX_ADDR_7_0, 0x30); ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, AP_AUX_COMMAND, 0x04); ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, AP_AUX_CTRL_STATUS, AP_AUX_CTRL_ADDRONLY | AP_AUX_CTRL_OP_EN); ret |= wait_aux_op_finish(ctx); /* Write segment address */ ret |= sp_tx_aux_wr(ctx, segment); /* Data read */ ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, AP_AUX_ADDR_7_0, 0x50); if (ret) { DRM_DEV_ERROR(dev, "IO error : aux initial fail.\n"); return ret; } for (cnt = 0; cnt <= EDID_TRY_CNT; cnt++) { sp_tx_aux_wr(ctx, offset); /* Set I2C read com 0x01 mot = 0 and read 16 bytes */ ret = sp_tx_aux_rd(ctx, 0xf1); if (ret) { ret = sp_tx_rst_aux(ctx); DRM_DEV_ERROR(dev, "segment read fail, reset!\n"); } else { ret = anx7625_reg_block_read(ctx, ctx->i2c.rx_p0_client, AP_AUX_BUFF_START, MAX_DPCD_BUFFER_SIZE, buf); if (ret > 0) break; } } if (cnt > EDID_TRY_CNT) return -EIO; return ret; } static int sp_tx_edid_read(struct anx7625_data *ctx, u8 *pedid_blocks_buf) { u8 offset; int edid_pos; int count, blocks_num; u8 pblock_buf[MAX_DPCD_BUFFER_SIZE]; u8 i, j; int g_edid_break = 0; int ret; struct device *dev = &ctx->client->dev; /* Address initial */ ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, AP_AUX_ADDR_7_0, 0x50); ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, AP_AUX_ADDR_15_8, 0); ret |= anx7625_write_and(ctx, ctx->i2c.rx_p0_client, AP_AUX_ADDR_19_16, 0xf0); if (ret < 0) { DRM_DEV_ERROR(dev, "access aux channel IO error.\n"); return -EIO; } blocks_num = sp_tx_get_edid_block(ctx); if (blocks_num < 0) return blocks_num; count = 0; do { switch (count) { case 0: case 1: for (i = 0; i < 8; i++) { offset = (i + count * 8) * MAX_DPCD_BUFFER_SIZE; g_edid_break = edid_read(ctx, offset, pblock_buf); if (g_edid_break < 0) break; memcpy(&pedid_blocks_buf[offset], pblock_buf, MAX_DPCD_BUFFER_SIZE); } break; case 2: offset = 0x00; for (j = 0; j < 8; j++) { edid_pos = (j + count * 8) * MAX_DPCD_BUFFER_SIZE; if (g_edid_break == 1) break; ret = segments_edid_read(ctx, count / 2, pblock_buf, offset); if (ret < 0) return ret; memcpy(&pedid_blocks_buf[edid_pos], pblock_buf, MAX_DPCD_BUFFER_SIZE); offset = offset + 0x10; } break; case 3: offset = 0x80; for (j = 0; j < 8; j++) { edid_pos = (j + count * 8) * MAX_DPCD_BUFFER_SIZE; if (g_edid_break == 1) break; ret = segments_edid_read(ctx, count / 2, pblock_buf, offset); if (ret < 0) return ret; memcpy(&pedid_blocks_buf[edid_pos], pblock_buf, MAX_DPCD_BUFFER_SIZE); offset = offset + 0x10; } break; default: break; } count++; } while (blocks_num >= count); /* Check edid data */ if (!drm_edid_is_valid((struct edid *)pedid_blocks_buf)) { DRM_DEV_ERROR(dev, "WARNING! edid check fail!\n"); return -EINVAL; } /* Reset aux channel */ ret = sp_tx_rst_aux(ctx); if (ret < 0) { DRM_DEV_ERROR(dev, "Failed to reset aux channel!\n"); return ret; } return (blocks_num + 1); } static void anx7625_power_on(struct anx7625_data *ctx) { struct device *dev = &ctx->client->dev; int ret, i; if (!ctx->pdata.low_power_mode) { DRM_DEV_DEBUG_DRIVER(dev, "not low power mode!\n"); return; } for (i = 0; i < ARRAY_SIZE(ctx->pdata.supplies); i++) { ret = regulator_enable(ctx->pdata.supplies[i].consumer); if (ret < 0) { DRM_DEV_DEBUG_DRIVER(dev, "cannot enable supply %d: %d\n", i, ret); goto reg_err; } usleep_range(2000, 2100); } usleep_range(11000, 12000); /* Power on pin enable */ gpiod_set_value(ctx->pdata.gpio_p_on, 1); usleep_range(10000, 11000); /* Power reset pin enable */ gpiod_set_value(ctx->pdata.gpio_reset, 1); usleep_range(10000, 11000); DRM_DEV_DEBUG_DRIVER(dev, "power on !\n"); return; reg_err: for (--i; i >= 0; i--) regulator_disable(ctx->pdata.supplies[i].consumer); } static void anx7625_power_standby(struct anx7625_data *ctx) { struct device *dev = &ctx->client->dev; int ret; if (!ctx->pdata.low_power_mode) { DRM_DEV_DEBUG_DRIVER(dev, "not low power mode!\n"); return; } gpiod_set_value(ctx->pdata.gpio_reset, 0); usleep_range(1000, 1100); gpiod_set_value(ctx->pdata.gpio_p_on, 0); usleep_range(1000, 1100); ret = regulator_bulk_disable(ARRAY_SIZE(ctx->pdata.supplies), ctx->pdata.supplies); if (ret < 0) DRM_DEV_DEBUG_DRIVER(dev, "cannot disable supplies %d\n", ret); DRM_DEV_DEBUG_DRIVER(dev, "power down\n"); } /* Basic configurations of ANX7625 */ static void anx7625_config(struct anx7625_data *ctx) { anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, XTAL_FRQ_SEL, XTAL_FRQ_27M); } static void anx7625_disable_pd_protocol(struct anx7625_data *ctx) { struct device *dev = &ctx->client->dev; int ret; /* Reset main ocm */ ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, 0x88, 0x40); /* Disable PD */ ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, AP_AV_STATUS, AP_DISABLE_PD); /* Release main ocm */ ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, 0x88, 0x00); if (ret < 0) DRM_DEV_DEBUG_DRIVER(dev, "disable PD feature fail.\n"); else DRM_DEV_DEBUG_DRIVER(dev, "disable PD feature succeeded.\n"); } static int anx7625_ocm_loading_check(struct anx7625_data *ctx) { int ret; struct device *dev = &ctx->client->dev; /* Check interface workable */ ret = anx7625_reg_read(ctx, ctx->i2c.rx_p0_client, FLASH_LOAD_STA); if (ret < 0) { DRM_DEV_ERROR(dev, "IO error : access flash load.\n"); return ret; } if ((ret & FLASH_LOAD_STA_CHK) != FLASH_LOAD_STA_CHK) return -ENODEV; anx7625_disable_pd_protocol(ctx); DRM_DEV_DEBUG_DRIVER(dev, "Firmware ver %02x%02x,", anx7625_reg_read(ctx, ctx->i2c.rx_p0_client, OCM_FW_VERSION), anx7625_reg_read(ctx, ctx->i2c.rx_p0_client, OCM_FW_REVERSION)); DRM_DEV_DEBUG_DRIVER(dev, "Driver version %s\n", ANX7625_DRV_VERSION); return 0; } static void anx7625_power_on_init(struct anx7625_data *ctx) { int retry_count, i; for (retry_count = 0; retry_count < 3; retry_count++) { anx7625_power_on(ctx); anx7625_config(ctx); for (i = 0; i < OCM_LOADING_TIME; i++) { if (!anx7625_ocm_loading_check(ctx)) return; usleep_range(1000, 1100); } anx7625_power_standby(ctx); } } static void anx7625_init_gpio(struct anx7625_data *platform) { struct device *dev = &platform->client->dev; DRM_DEV_DEBUG_DRIVER(dev, "init gpio\n"); /* Gpio for chip power enable */ platform->pdata.gpio_p_on = devm_gpiod_get_optional(dev, "enable", GPIOD_OUT_LOW); if (IS_ERR_OR_NULL(platform->pdata.gpio_p_on)) { DRM_DEV_DEBUG_DRIVER(dev, "no enable gpio found\n"); platform->pdata.gpio_p_on = NULL; } /* Gpio for chip reset */ platform->pdata.gpio_reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW); if (IS_ERR_OR_NULL(platform->pdata.gpio_reset)) { DRM_DEV_DEBUG_DRIVER(dev, "no reset gpio found\n"); platform->pdata.gpio_reset = NULL; } if (platform->pdata.gpio_p_on && platform->pdata.gpio_reset) { platform->pdata.low_power_mode = 1; DRM_DEV_DEBUG_DRIVER(dev, "low power mode, pon %d, reset %d.\n", desc_to_gpio(platform->pdata.gpio_p_on), desc_to_gpio(platform->pdata.gpio_reset)); } else { platform->pdata.low_power_mode = 0; DRM_DEV_DEBUG_DRIVER(dev, "not low power mode.\n"); } } static void anx7625_stop_dp_work(struct anx7625_data *ctx) { ctx->hpd_status = 0; ctx->hpd_high_cnt = 0; } static void anx7625_start_dp_work(struct anx7625_data *ctx) { int ret; struct device *dev = &ctx->client->dev; if (ctx->hpd_high_cnt >= 2) { DRM_DEV_DEBUG_DRIVER(dev, "filter useless HPD\n"); return; } ctx->hpd_status = 1; ctx->hpd_high_cnt++; /* Not support HDCP */ ret = anx7625_write_and(ctx, ctx->i2c.rx_p1_client, 0xee, 0x9f); /* Try auth flag */ ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, 0xec, 0x10); /* Interrupt for DRM */ ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, 0xff, 0x01); if (ret < 0) { DRM_DEV_ERROR(dev, "fail to setting HDCP/auth\n"); return; } ret = anx7625_reg_read(ctx, ctx->i2c.rx_p1_client, 0x86); if (ret < 0) return; DRM_DEV_DEBUG_DRIVER(dev, "Secure OCM version=%02x\n", ret); } static int anx7625_read_hpd_status_p0(struct anx7625_data *ctx) { int ret; /* Set irq detect window to 2ms */ ret = anx7625_reg_write(ctx, ctx->i2c.tx_p2_client, HPD_DET_TIMER_BIT0_7, HPD_TIME & 0xFF); ret |= anx7625_reg_write(ctx, ctx->i2c.tx_p2_client, HPD_DET_TIMER_BIT8_15, (HPD_TIME >> 8) & 0xFF); ret |= anx7625_reg_write(ctx, ctx->i2c.tx_p2_client, HPD_DET_TIMER_BIT16_23, (HPD_TIME >> 16) & 0xFF); if (ret < 0) return ret; return anx7625_reg_read(ctx, ctx->i2c.rx_p0_client, SYSTEM_STSTUS); } static int _anx7625_hpd_polling(struct anx7625_data *ctx, unsigned long wait_us) { int ret, val; struct device *dev = &ctx->client->dev; /* Interrupt mode, no need poll HPD status, just return */ if (ctx->pdata.intp_irq) return 0; ret = readx_poll_timeout(anx7625_read_hpd_status_p0, ctx, val, ((val & HPD_STATUS) || (val < 0)), wait_us / 100, wait_us); if (ret) { DRM_DEV_ERROR(dev, "no hpd.\n"); return ret; } DRM_DEV_DEBUG_DRIVER(dev, "system status: 0x%x. HPD raise up.\n", val); anx7625_reg_write(ctx, ctx->i2c.tcpc_client, INTR_ALERT_1, 0xFF); anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, INTERFACE_CHANGE_INT, 0); anx7625_start_dp_work(ctx); if (!ctx->pdata.panel_bridge && ctx->bridge_attached) drm_helper_hpd_irq_event(ctx->bridge.dev); return 0; } static int anx7625_wait_hpd_asserted(struct drm_dp_aux *aux, unsigned long wait_us) { struct anx7625_data *ctx = container_of(aux, struct anx7625_data, aux); struct device *dev = &ctx->client->dev; int ret; pm_runtime_get_sync(dev); ret = _anx7625_hpd_polling(ctx, wait_us); pm_runtime_mark_last_busy(dev); pm_runtime_put_autosuspend(dev); return ret; } static void anx7625_remove_edid(struct anx7625_data *ctx) { ctx->slimport_edid_p.edid_block_num = -1; } static void anx7625_dp_adjust_swing(struct anx7625_data *ctx) { int i; for (i = 0; i < ctx->pdata.dp_lane0_swing_reg_cnt; i++) anx7625_reg_write(ctx, ctx->i2c.tx_p1_client, DP_TX_LANE0_SWING_REG0 + i, ctx->pdata.lane0_reg_data[i]); for (i = 0; i < ctx->pdata.dp_lane1_swing_reg_cnt; i++) anx7625_reg_write(ctx, ctx->i2c.tx_p1_client, DP_TX_LANE1_SWING_REG0 + i, ctx->pdata.lane1_reg_data[i]); } static void dp_hpd_change_handler(struct anx7625_data *ctx, bool on) { struct device *dev = &ctx->client->dev; /* HPD changed */ DRM_DEV_DEBUG_DRIVER(dev, "dp_hpd_change_default_func: %d\n", (u32)on); if (on == 0) { DRM_DEV_DEBUG_DRIVER(dev, " HPD low\n"); anx7625_remove_edid(ctx); anx7625_stop_dp_work(ctx); } else { DRM_DEV_DEBUG_DRIVER(dev, " HPD high\n"); anx7625_start_dp_work(ctx); anx7625_dp_adjust_swing(ctx); } } static int anx7625_hpd_change_detect(struct anx7625_data *ctx) { int intr_vector, status; struct device *dev = &ctx->client->dev; status = anx7625_reg_write(ctx, ctx->i2c.tcpc_client, INTR_ALERT_1, 0xFF); if (status < 0) { DRM_DEV_ERROR(dev, "cannot clear alert reg.\n"); return status; } intr_vector = anx7625_reg_read(ctx, ctx->i2c.rx_p0_client, INTERFACE_CHANGE_INT); if (intr_vector < 0) { DRM_DEV_ERROR(dev, "cannot access interrupt change reg.\n"); return intr_vector; } DRM_DEV_DEBUG_DRIVER(dev, "0x7e:0x44=%x\n", intr_vector); status = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, INTERFACE_CHANGE_INT, intr_vector & (~intr_vector)); if (status < 0) { DRM_DEV_ERROR(dev, "cannot clear interrupt change reg.\n"); return status; } if (!(intr_vector & HPD_STATUS_CHANGE)) return -ENOENT; status = anx7625_reg_read(ctx, ctx->i2c.rx_p0_client, SYSTEM_STSTUS); if (status < 0) { DRM_DEV_ERROR(dev, "cannot clear interrupt status.\n"); return status; } DRM_DEV_DEBUG_DRIVER(dev, "0x7e:0x45=%x\n", status); dp_hpd_change_handler(ctx, status & HPD_STATUS); return 0; } static void anx7625_work_func(struct work_struct *work) { int event; struct anx7625_data *ctx = container_of(work, struct anx7625_data, work); mutex_lock(&ctx->lock); if (pm_runtime_suspended(&ctx->client->dev)) goto unlock; event = anx7625_hpd_change_detect(ctx); if (event < 0) goto unlock; if (ctx->bridge_attached) drm_helper_hpd_irq_event(ctx->bridge.dev); unlock: mutex_unlock(&ctx->lock); } static irqreturn_t anx7625_intr_hpd_isr(int irq, void *data) { struct anx7625_data *ctx = (struct anx7625_data *)data; queue_work(ctx->workqueue, &ctx->work); return IRQ_HANDLED; } static int anx7625_get_swing_setting(struct device *dev, struct anx7625_platform_data *pdata) { int num_regs; if (of_get_property(dev->of_node, "analogix,lane0-swing", &num_regs)) { if (num_regs > DP_TX_SWING_REG_CNT) num_regs = DP_TX_SWING_REG_CNT; pdata->dp_lane0_swing_reg_cnt = num_regs; of_property_read_u8_array(dev->of_node, "analogix,lane0-swing", pdata->lane0_reg_data, num_regs); } if (of_get_property(dev->of_node, "analogix,lane1-swing", &num_regs)) { if (num_regs > DP_TX_SWING_REG_CNT) num_regs = DP_TX_SWING_REG_CNT; pdata->dp_lane1_swing_reg_cnt = num_regs; of_property_read_u8_array(dev->of_node, "analogix,lane1-swing", pdata->lane1_reg_data, num_regs); } return 0; } static int anx7625_parse_dt(struct device *dev, struct anx7625_platform_data *pdata) { struct device_node *np = dev->of_node, *ep0; int bus_type, mipi_lanes; anx7625_get_swing_setting(dev, pdata); pdata->is_dpi = 0; /* default dsi mode */ of_node_put(pdata->mipi_host_node); pdata->mipi_host_node = of_graph_get_remote_node(np, 0, 0); if (!pdata->mipi_host_node) { DRM_DEV_ERROR(dev, "fail to get internal panel.\n"); return -ENODEV; } bus_type = 0; mipi_lanes = MAX_LANES_SUPPORT; ep0 = of_graph_get_endpoint_by_regs(np, 0, 0); if (ep0) { if (of_property_read_u32(ep0, "bus-type", &bus_type)) bus_type = 0; mipi_lanes = drm_of_get_data_lanes_count(ep0, 1, MAX_LANES_SUPPORT); of_node_put(ep0); } if (bus_type == V4L2_FWNODE_BUS_TYPE_DPI) /* bus type is DPI */ pdata->is_dpi = 1; pdata->mipi_lanes = MAX_LANES_SUPPORT; if (mipi_lanes > 0) pdata->mipi_lanes = mipi_lanes; if (pdata->is_dpi) DRM_DEV_DEBUG_DRIVER(dev, "found MIPI DPI host node.\n"); else DRM_DEV_DEBUG_DRIVER(dev, "found MIPI DSI host node.\n"); if (of_property_read_bool(np, "analogix,audio-enable")) pdata->audio_en = 1; pdata->panel_bridge = devm_drm_of_get_bridge(dev, np, 1, 0); if (IS_ERR(pdata->panel_bridge)) { if (PTR_ERR(pdata->panel_bridge) == -ENODEV) { pdata->panel_bridge = NULL; return 0; } return PTR_ERR(pdata->panel_bridge); } DRM_DEV_DEBUG_DRIVER(dev, "get panel node.\n"); return 0; } static bool anx7625_of_panel_on_aux_bus(struct device *dev) { struct device_node *bus, *panel; bus = of_get_child_by_name(dev->of_node, "aux-bus"); if (!bus) return false; panel = of_get_child_by_name(bus, "panel"); of_node_put(bus); if (!panel) return false; of_node_put(panel); return true; } static inline struct anx7625_data *bridge_to_anx7625(struct drm_bridge *bridge) { return container_of(bridge, struct anx7625_data, bridge); } static ssize_t anx7625_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg) { struct anx7625_data *ctx = container_of(aux, struct anx7625_data, aux); struct device *dev = &ctx->client->dev; u8 request = msg->request & ~DP_AUX_I2C_MOT; int ret = 0; pm_runtime_get_sync(dev); msg->reply = 0; switch (request) { case DP_AUX_NATIVE_WRITE: case DP_AUX_I2C_WRITE: case DP_AUX_NATIVE_READ: case DP_AUX_I2C_READ: break; default: ret = -EINVAL; } if (!ret) ret = anx7625_aux_trans(ctx, msg->request, msg->address, msg->size, msg->buffer); pm_runtime_mark_last_busy(dev); pm_runtime_put_autosuspend(dev); return ret; } static struct edid *anx7625_get_edid(struct anx7625_data *ctx) { struct device *dev = &ctx->client->dev; struct s_edid_data *p_edid = &ctx->slimport_edid_p; int edid_num; u8 *edid; edid = kmalloc(FOUR_BLOCK_SIZE, GFP_KERNEL); if (!edid) { DRM_DEV_ERROR(dev, "Fail to allocate buffer\n"); return NULL; } if (ctx->slimport_edid_p.edid_block_num > 0) { memcpy(edid, ctx->slimport_edid_p.edid_raw_data, FOUR_BLOCK_SIZE); return (struct edid *)edid; } pm_runtime_get_sync(dev); _anx7625_hpd_polling(ctx, 5000 * 100); edid_num = sp_tx_edid_read(ctx, p_edid->edid_raw_data); pm_runtime_put_sync(dev); if (edid_num < 1) { DRM_DEV_ERROR(dev, "Fail to read EDID: %d\n", edid_num); kfree(edid); return NULL; } p_edid->edid_block_num = edid_num; memcpy(edid, ctx->slimport_edid_p.edid_raw_data, FOUR_BLOCK_SIZE); return (struct edid *)edid; } static enum drm_connector_status anx7625_sink_detect(struct anx7625_data *ctx) { struct device *dev = &ctx->client->dev; DRM_DEV_DEBUG_DRIVER(dev, "sink detect\n"); if (ctx->pdata.panel_bridge) return connector_status_connected; return ctx->hpd_status ? connector_status_connected : connector_status_disconnected; } static int anx7625_audio_hw_params(struct device *dev, void *data, struct hdmi_codec_daifmt *fmt, struct hdmi_codec_params *params) { struct anx7625_data *ctx = dev_get_drvdata(dev); int wl, ch, rate; int ret = 0; if (anx7625_sink_detect(ctx) == connector_status_disconnected) { DRM_DEV_DEBUG_DRIVER(dev, "DP not connected\n"); return 0; } if (fmt->fmt != HDMI_DSP_A && fmt->fmt != HDMI_I2S) { DRM_DEV_ERROR(dev, "only supports DSP_A & I2S\n"); return -EINVAL; } DRM_DEV_DEBUG_DRIVER(dev, "setting %d Hz, %d bit, %d channels\n", params->sample_rate, params->sample_width, params->cea.channels); if (fmt->fmt == HDMI_DSP_A) ret = anx7625_write_and_or(ctx, ctx->i2c.tx_p2_client, AUDIO_CHANNEL_STATUS_6, ~I2S_SLAVE_MODE, TDM_SLAVE_MODE); else ret = anx7625_write_and_or(ctx, ctx->i2c.tx_p2_client, AUDIO_CHANNEL_STATUS_6, ~TDM_SLAVE_MODE, I2S_SLAVE_MODE); /* Word length */ switch (params->sample_width) { case 16: wl = AUDIO_W_LEN_16_20MAX; break; case 18: wl = AUDIO_W_LEN_18_20MAX; break; case 20: wl = AUDIO_W_LEN_20_20MAX; break; case 24: wl = AUDIO_W_LEN_24_24MAX; break; default: DRM_DEV_DEBUG_DRIVER(dev, "wordlength: %d bit not support", params->sample_width); return -EINVAL; } ret |= anx7625_write_and_or(ctx, ctx->i2c.tx_p2_client, AUDIO_CHANNEL_STATUS_5, 0xf0, wl); /* Channel num */ switch (params->cea.channels) { case 2: ch = I2S_CH_2; break; case 4: ch = TDM_CH_4; break; case 6: ch = TDM_CH_6; break; case 8: ch = TDM_CH_8; break; default: DRM_DEV_DEBUG_DRIVER(dev, "channel number: %d not support", params->cea.channels); return -EINVAL; } ret |= anx7625_write_and_or(ctx, ctx->i2c.tx_p2_client, AUDIO_CHANNEL_STATUS_6, 0x1f, ch << 5); if (ch > I2S_CH_2) ret |= anx7625_write_or(ctx, ctx->i2c.tx_p2_client, AUDIO_CHANNEL_STATUS_6, AUDIO_LAYOUT); else ret |= anx7625_write_and(ctx, ctx->i2c.tx_p2_client, AUDIO_CHANNEL_STATUS_6, ~AUDIO_LAYOUT); /* FS */ switch (params->sample_rate) { case 32000: rate = AUDIO_FS_32K; break; case 44100: rate = AUDIO_FS_441K; break; case 48000: rate = AUDIO_FS_48K; break; case 88200: rate = AUDIO_FS_882K; break; case 96000: rate = AUDIO_FS_96K; break; case 176400: rate = AUDIO_FS_1764K; break; case 192000: rate = AUDIO_FS_192K; break; default: DRM_DEV_DEBUG_DRIVER(dev, "sample rate: %d not support", params->sample_rate); return -EINVAL; } ret |= anx7625_write_and_or(ctx, ctx->i2c.tx_p2_client, AUDIO_CHANNEL_STATUS_4, 0xf0, rate); ret |= anx7625_write_or(ctx, ctx->i2c.rx_p0_client, AP_AV_STATUS, AP_AUDIO_CHG); if (ret < 0) { DRM_DEV_ERROR(dev, "IO error : config audio.\n"); return -EIO; } return 0; } static void anx7625_audio_shutdown(struct device *dev, void *data) { DRM_DEV_DEBUG_DRIVER(dev, "stop audio\n"); } static int anx7625_hdmi_i2s_get_dai_id(struct snd_soc_component *component, struct device_node *endpoint) { struct of_endpoint of_ep; int ret; ret = of_graph_parse_endpoint(endpoint, &of_ep); if (ret < 0) return ret; /* * HDMI sound should be located at external DPI port * Didn't have good way to check where is internal(DSI) * or external(DPI) bridge */ return 0; } static void anx7625_audio_update_connector_status(struct anx7625_data *ctx, enum drm_connector_status status) { if (ctx->plugged_cb && ctx->codec_dev) { ctx->plugged_cb(ctx->codec_dev, status == connector_status_connected); } } static int anx7625_audio_hook_plugged_cb(struct device *dev, void *data, hdmi_codec_plugged_cb fn, struct device *codec_dev) { struct anx7625_data *ctx = data; ctx->plugged_cb = fn; ctx->codec_dev = codec_dev; anx7625_audio_update_connector_status(ctx, anx7625_sink_detect(ctx)); return 0; } static int anx7625_audio_get_eld(struct device *dev, void *data, u8 *buf, size_t len) { struct anx7625_data *ctx = dev_get_drvdata(dev); if (!ctx->connector) { /* Pass en empty ELD if connector not available */ memset(buf, 0, len); } else { dev_dbg(dev, "audio copy eld\n"); memcpy(buf, ctx->connector->eld, min(sizeof(ctx->connector->eld), len)); } return 0; } static const struct hdmi_codec_ops anx7625_codec_ops = { .hw_params = anx7625_audio_hw_params, .audio_shutdown = anx7625_audio_shutdown, .get_eld = anx7625_audio_get_eld, .get_dai_id = anx7625_hdmi_i2s_get_dai_id, .hook_plugged_cb = anx7625_audio_hook_plugged_cb, }; static void anx7625_unregister_audio(struct anx7625_data *ctx) { struct device *dev = &ctx->client->dev; if (ctx->audio_pdev) { platform_device_unregister(ctx->audio_pdev); ctx->audio_pdev = NULL; } DRM_DEV_DEBUG_DRIVER(dev, "unbound to %s", HDMI_CODEC_DRV_NAME); } static int anx7625_register_audio(struct device *dev, struct anx7625_data *ctx) { struct hdmi_codec_pdata codec_data = { .ops = &anx7625_codec_ops, .max_i2s_channels = 8, .i2s = 1, .data = ctx, }; ctx->audio_pdev = platform_device_register_data(dev, HDMI_CODEC_DRV_NAME, PLATFORM_DEVID_AUTO, &codec_data, sizeof(codec_data)); if (IS_ERR(ctx->audio_pdev)) return PTR_ERR(ctx->audio_pdev); DRM_DEV_DEBUG_DRIVER(dev, "bound to %s", HDMI_CODEC_DRV_NAME); return 0; } static int anx7625_attach_dsi(struct anx7625_data *ctx) { struct mipi_dsi_device *dsi; struct device *dev = &ctx->client->dev; struct mipi_dsi_host *host; const struct mipi_dsi_device_info info = { .type = "anx7625", .channel = 0, .node = NULL, }; int ret; DRM_DEV_DEBUG_DRIVER(dev, "attach dsi\n"); host = of_find_mipi_dsi_host_by_node(ctx->pdata.mipi_host_node); if (!host) { DRM_DEV_ERROR(dev, "fail to find dsi host.\n"); return -EPROBE_DEFER; } dsi = devm_mipi_dsi_device_register_full(dev, host, &info); if (IS_ERR(dsi)) { DRM_DEV_ERROR(dev, "fail to create dsi device.\n"); return -EINVAL; } dsi->lanes = ctx->pdata.mipi_lanes; dsi->format = MIPI_DSI_FMT_RGB888; dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE | MIPI_DSI_MODE_VIDEO_HSE | MIPI_DSI_HS_PKT_END_ALIGNED; ret = devm_mipi_dsi_attach(dev, dsi); if (ret) { DRM_DEV_ERROR(dev, "fail to attach dsi to host.\n"); return ret; } ctx->dsi = dsi; DRM_DEV_DEBUG_DRIVER(dev, "attach dsi succeeded.\n"); return 0; } static void hdcp_check_work_func(struct work_struct *work) { u8 status; struct delayed_work *dwork; struct anx7625_data *ctx; struct device *dev; struct drm_device *drm_dev; dwork = to_delayed_work(work); ctx = container_of(dwork, struct anx7625_data, hdcp_work); dev = &ctx->client->dev; if (!ctx->connector) { dev_err(dev, "HDCP connector is null!"); return; } drm_dev = ctx->connector->dev; drm_modeset_lock(&drm_dev->mode_config.connection_mutex, NULL); mutex_lock(&ctx->hdcp_wq_lock); status = anx7625_reg_read(ctx, ctx->i2c.tx_p0_client, 0); dev_dbg(dev, "sink HDCP status check: %.02x\n", status); if (status & BIT(1)) { ctx->hdcp_cp = DRM_MODE_CONTENT_PROTECTION_ENABLED; drm_hdcp_update_content_protection(ctx->connector, ctx->hdcp_cp); dev_dbg(dev, "update CP to ENABLE\n"); } mutex_unlock(&ctx->hdcp_wq_lock); drm_modeset_unlock(&drm_dev->mode_config.connection_mutex); } static int anx7625_connector_atomic_check(struct anx7625_data *ctx, struct drm_connector_state *state) { struct device *dev = &ctx->client->dev; int cp; dev_dbg(dev, "hdcp state check\n"); cp = state->content_protection; if (cp == ctx->hdcp_cp) return 0; if (cp == DRM_MODE_CONTENT_PROTECTION_DESIRED) { if (ctx->dp_en) { dev_dbg(dev, "enable HDCP\n"); anx7625_hdcp_enable(ctx); queue_delayed_work(ctx->hdcp_workqueue, &ctx->hdcp_work, msecs_to_jiffies(2000)); } } if (cp == DRM_MODE_CONTENT_PROTECTION_UNDESIRED) { if (ctx->hdcp_cp != DRM_MODE_CONTENT_PROTECTION_ENABLED) { dev_err(dev, "current CP is not ENABLED\n"); return -EINVAL; } anx7625_hdcp_disable(ctx); ctx->hdcp_cp = DRM_MODE_CONTENT_PROTECTION_UNDESIRED; drm_hdcp_update_content_protection(ctx->connector, ctx->hdcp_cp); dev_dbg(dev, "update CP to UNDESIRE\n"); } if (cp == DRM_MODE_CONTENT_PROTECTION_ENABLED) { dev_err(dev, "Userspace illegal set to PROTECTION ENABLE\n"); return -EINVAL; } return 0; } static int anx7625_bridge_attach(struct drm_bridge *bridge, enum drm_bridge_attach_flags flags) { struct anx7625_data *ctx = bridge_to_anx7625(bridge); int err; struct device *dev = &ctx->client->dev; DRM_DEV_DEBUG_DRIVER(dev, "drm attach\n"); if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) return -EINVAL; if (!bridge->encoder) { DRM_DEV_ERROR(dev, "Parent encoder object not found"); return -ENODEV; } ctx->aux.drm_dev = bridge->dev; err = drm_dp_aux_register(&ctx->aux); if (err) { dev_err(dev, "failed to register aux channel: %d\n", err); return err; } if (ctx->pdata.panel_bridge) { err = drm_bridge_attach(bridge->encoder, ctx->pdata.panel_bridge, &ctx->bridge, flags); if (err) return err; } ctx->bridge_attached = 1; return 0; } static void anx7625_bridge_detach(struct drm_bridge *bridge) { struct anx7625_data *ctx = bridge_to_anx7625(bridge); drm_dp_aux_unregister(&ctx->aux); } static enum drm_mode_status anx7625_bridge_mode_valid(struct drm_bridge *bridge, const struct drm_display_info *info, const struct drm_display_mode *mode) { struct anx7625_data *ctx = bridge_to_anx7625(bridge); struct device *dev = &ctx->client->dev; DRM_DEV_DEBUG_DRIVER(dev, "drm mode checking\n"); /* Max 1200p at 5.4 Ghz, one lane, pixel clock 300M */ if (mode->clock > SUPPORT_PIXEL_CLOCK) { DRM_DEV_DEBUG_DRIVER(dev, "drm mode invalid, pixelclock too high.\n"); return MODE_CLOCK_HIGH; } DRM_DEV_DEBUG_DRIVER(dev, "drm mode valid.\n"); return MODE_OK; } static void anx7625_bridge_mode_set(struct drm_bridge *bridge, const struct drm_display_mode *old_mode, const struct drm_display_mode *mode) { struct anx7625_data *ctx = bridge_to_anx7625(bridge); struct device *dev = &ctx->client->dev; DRM_DEV_DEBUG_DRIVER(dev, "drm mode set\n"); ctx->dt.pixelclock.min = mode->clock; ctx->dt.hactive.min = mode->hdisplay; ctx->dt.hsync_len.min = mode->hsync_end - mode->hsync_start; ctx->dt.hfront_porch.min = mode->hsync_start - mode->hdisplay; ctx->dt.hback_porch.min = mode->htotal - mode->hsync_end; ctx->dt.vactive.min = mode->vdisplay; ctx->dt.vsync_len.min = mode->vsync_end - mode->vsync_start; ctx->dt.vfront_porch.min = mode->vsync_start - mode->vdisplay; ctx->dt.vback_porch.min = mode->vtotal - mode->vsync_end; ctx->display_timing_valid = 1; DRM_DEV_DEBUG_DRIVER(dev, "pixelclock(%d).\n", ctx->dt.pixelclock.min); DRM_DEV_DEBUG_DRIVER(dev, "hactive(%d), hsync(%d), hfp(%d), hbp(%d)\n", ctx->dt.hactive.min, ctx->dt.hsync_len.min, ctx->dt.hfront_porch.min, ctx->dt.hback_porch.min); DRM_DEV_DEBUG_DRIVER(dev, "vactive(%d), vsync(%d), vfp(%d), vbp(%d)\n", ctx->dt.vactive.min, ctx->dt.vsync_len.min, ctx->dt.vfront_porch.min, ctx->dt.vback_porch.min); DRM_DEV_DEBUG_DRIVER(dev, "hdisplay(%d),hsync_start(%d).\n", mode->hdisplay, mode->hsync_start); DRM_DEV_DEBUG_DRIVER(dev, "hsync_end(%d),htotal(%d).\n", mode->hsync_end, mode->htotal); DRM_DEV_DEBUG_DRIVER(dev, "vdisplay(%d),vsync_start(%d).\n", mode->vdisplay, mode->vsync_start); DRM_DEV_DEBUG_DRIVER(dev, "vsync_end(%d),vtotal(%d).\n", mode->vsync_end, mode->vtotal); } static bool anx7625_bridge_mode_fixup(struct drm_bridge *bridge, const struct drm_display_mode *mode, struct drm_display_mode *adj) { struct anx7625_data *ctx = bridge_to_anx7625(bridge); struct device *dev = &ctx->client->dev; u32 hsync, hfp, hbp, hblanking; u32 adj_hsync, adj_hfp, adj_hbp, adj_hblanking, delta_adj; u32 vref, adj_clock; DRM_DEV_DEBUG_DRIVER(dev, "drm mode fixup set\n"); /* No need fixup for external monitor */ if (!ctx->pdata.panel_bridge) return true; hsync = mode->hsync_end - mode->hsync_start; hfp = mode->hsync_start - mode->hdisplay; hbp = mode->htotal - mode->hsync_end; hblanking = mode->htotal - mode->hdisplay; DRM_DEV_DEBUG_DRIVER(dev, "before mode fixup\n"); DRM_DEV_DEBUG_DRIVER(dev, "hsync(%d), hfp(%d), hbp(%d), clock(%d)\n", hsync, hfp, hbp, adj->clock); DRM_DEV_DEBUG_DRIVER(dev, "hsync_start(%d), hsync_end(%d), htot(%d)\n", adj->hsync_start, adj->hsync_end, adj->htotal); adj_hfp = hfp; adj_hsync = hsync; adj_hbp = hbp; adj_hblanking = hblanking; /* HFP needs to be even */ if (hfp & 0x1) { adj_hfp += 1; adj_hblanking += 1; } /* HBP needs to be even */ if (hbp & 0x1) { adj_hbp -= 1; adj_hblanking -= 1; } /* HSYNC needs to be even */ if (hsync & 0x1) { if (adj_hblanking < hblanking) adj_hsync += 1; else adj_hsync -= 1; } /* * Once illegal timing detected, use default HFP, HSYNC, HBP * This adjusting made for built-in eDP panel, for the externel * DP monitor, may need return false. */ if (hblanking < HBLANKING_MIN || (hfp < HP_MIN && hbp < HP_MIN)) { adj_hsync = SYNC_LEN_DEF; adj_hfp = HFP_HBP_DEF; adj_hbp = HFP_HBP_DEF; vref = adj->clock * 1000 / (adj->htotal * adj->vtotal); if (hblanking < HBLANKING_MIN) { delta_adj = HBLANKING_MIN - hblanking; adj_clock = vref * delta_adj * adj->vtotal; adj->clock += DIV_ROUND_UP(adj_clock, 1000); } else { delta_adj = hblanking - HBLANKING_MIN; adj_clock = vref * delta_adj * adj->vtotal; adj->clock -= DIV_ROUND_UP(adj_clock, 1000); } DRM_WARN("illegal hblanking timing, use default.\n"); DRM_WARN("hfp(%d), hbp(%d), hsync(%d).\n", hfp, hbp, hsync); } else if (adj_hfp < HP_MIN) { /* Adjust hfp if hfp less than HP_MIN */ delta_adj = HP_MIN - adj_hfp; adj_hfp = HP_MIN; /* * Balance total HBlanking pixel, if HBP does not have enough * space, adjust HSYNC length, otherwise adjust HBP */ if ((adj_hbp - delta_adj) < HP_MIN) /* HBP not enough space */ adj_hsync -= delta_adj; else adj_hbp -= delta_adj; } else if (adj_hbp < HP_MIN) { delta_adj = HP_MIN - adj_hbp; adj_hbp = HP_MIN; /* * Balance total HBlanking pixel, if HBP hasn't enough space, * adjust HSYNC length, otherwize adjust HBP */ if ((adj_hfp - delta_adj) < HP_MIN) /* HFP not enough space */ adj_hsync -= delta_adj; else adj_hfp -= delta_adj; } DRM_DEV_DEBUG_DRIVER(dev, "after mode fixup\n"); DRM_DEV_DEBUG_DRIVER(dev, "hsync(%d), hfp(%d), hbp(%d), clock(%d)\n", adj_hsync, adj_hfp, adj_hbp, adj->clock); /* Reconstruct timing */ adj->hsync_start = adj->hdisplay + adj_hfp; adj->hsync_end = adj->hsync_start + adj_hsync; adj->htotal = adj->hsync_end + adj_hbp; DRM_DEV_DEBUG_DRIVER(dev, "hsync_start(%d), hsync_end(%d), htot(%d)\n", adj->hsync_start, adj->hsync_end, adj->htotal); return true; } static int anx7625_bridge_atomic_check(struct drm_bridge *bridge, struct drm_bridge_state *bridge_state, struct drm_crtc_state *crtc_state, struct drm_connector_state *conn_state) { struct anx7625_data *ctx = bridge_to_anx7625(bridge); struct device *dev = &ctx->client->dev; dev_dbg(dev, "drm bridge atomic check\n"); anx7625_bridge_mode_fixup(bridge, &crtc_state->mode, &crtc_state->adjusted_mode); return anx7625_connector_atomic_check(ctx, conn_state); } static void anx7625_bridge_atomic_enable(struct drm_bridge *bridge, struct drm_bridge_state *state) { struct anx7625_data *ctx = bridge_to_anx7625(bridge); struct device *dev = &ctx->client->dev; struct drm_connector *connector; dev_dbg(dev, "drm atomic enable\n"); if (!bridge->encoder) { dev_err(dev, "Parent encoder object not found"); return; } connector = drm_atomic_get_new_connector_for_encoder(state->base.state, bridge->encoder); if (!connector) return; ctx->connector = connector; pm_runtime_get_sync(dev); _anx7625_hpd_polling(ctx, 5000 * 100); anx7625_dp_start(ctx); } static void anx7625_bridge_atomic_disable(struct drm_bridge *bridge, struct drm_bridge_state *old) { struct anx7625_data *ctx = bridge_to_anx7625(bridge); struct device *dev = &ctx->client->dev; dev_dbg(dev, "drm atomic disable\n"); ctx->connector = NULL; anx7625_dp_stop(ctx); pm_runtime_put_sync(dev); } static enum drm_connector_status anx7625_bridge_detect(struct drm_bridge *bridge) { struct anx7625_data *ctx = bridge_to_anx7625(bridge); struct device *dev = &ctx->client->dev; DRM_DEV_DEBUG_DRIVER(dev, "drm bridge detect\n"); return anx7625_sink_detect(ctx); } static struct edid *anx7625_bridge_get_edid(struct drm_bridge *bridge, struct drm_connector *connector) { struct anx7625_data *ctx = bridge_to_anx7625(bridge); struct device *dev = &ctx->client->dev; DRM_DEV_DEBUG_DRIVER(dev, "drm bridge get edid\n"); return anx7625_get_edid(ctx); } static const struct drm_bridge_funcs anx7625_bridge_funcs = { .attach = anx7625_bridge_attach, .detach = anx7625_bridge_detach, .mode_valid = anx7625_bridge_mode_valid, .mode_set = anx7625_bridge_mode_set, .atomic_check = anx7625_bridge_atomic_check, .atomic_enable = anx7625_bridge_atomic_enable, .atomic_disable = anx7625_bridge_atomic_disable, .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state, .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state, .atomic_reset = drm_atomic_helper_bridge_reset, .detect = anx7625_bridge_detect, .get_edid = anx7625_bridge_get_edid, }; static int anx7625_register_i2c_dummy_clients(struct anx7625_data *ctx, struct i2c_client *client) { struct device *dev = &ctx->client->dev; ctx->i2c.tx_p0_client = devm_i2c_new_dummy_device(dev, client->adapter, TX_P0_ADDR >> 1); if (IS_ERR(ctx->i2c.tx_p0_client)) return PTR_ERR(ctx->i2c.tx_p0_client); ctx->i2c.tx_p1_client = devm_i2c_new_dummy_device(dev, client->adapter, TX_P1_ADDR >> 1); if (IS_ERR(ctx->i2c.tx_p1_client)) return PTR_ERR(ctx->i2c.tx_p1_client); ctx->i2c.tx_p2_client = devm_i2c_new_dummy_device(dev, client->adapter, TX_P2_ADDR >> 1); if (IS_ERR(ctx->i2c.tx_p2_client)) return PTR_ERR(ctx->i2c.tx_p2_client); ctx->i2c.rx_p0_client = devm_i2c_new_dummy_device(dev, client->adapter, RX_P0_ADDR >> 1); if (IS_ERR(ctx->i2c.rx_p0_client)) return PTR_ERR(ctx->i2c.rx_p0_client); ctx->i2c.rx_p1_client = devm_i2c_new_dummy_device(dev, client->adapter, RX_P1_ADDR >> 1); if (IS_ERR(ctx->i2c.rx_p1_client)) return PTR_ERR(ctx->i2c.rx_p1_client); ctx->i2c.rx_p2_client = devm_i2c_new_dummy_device(dev, client->adapter, RX_P2_ADDR >> 1); if (IS_ERR(ctx->i2c.rx_p2_client)) return PTR_ERR(ctx->i2c.rx_p2_client); ctx->i2c.tcpc_client = devm_i2c_new_dummy_device(dev, client->adapter, TCPC_INTERFACE_ADDR >> 1); if (IS_ERR(ctx->i2c.tcpc_client)) return PTR_ERR(ctx->i2c.tcpc_client); return 0; } static int __maybe_unused anx7625_runtime_pm_suspend(struct device *dev) { struct anx7625_data *ctx = dev_get_drvdata(dev); mutex_lock(&ctx->lock); anx7625_stop_dp_work(ctx); anx7625_power_standby(ctx); mutex_unlock(&ctx->lock); return 0; } static int __maybe_unused anx7625_runtime_pm_resume(struct device *dev) { struct anx7625_data *ctx = dev_get_drvdata(dev); mutex_lock(&ctx->lock); anx7625_power_on_init(ctx); mutex_unlock(&ctx->lock); return 0; } static const struct dev_pm_ops anx7625_pm_ops = { SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, pm_runtime_force_resume) SET_RUNTIME_PM_OPS(anx7625_runtime_pm_suspend, anx7625_runtime_pm_resume, NULL) }; static void anx7625_runtime_disable(void *data) { pm_runtime_dont_use_autosuspend(data); pm_runtime_disable(data); } static int anx7625_i2c_probe(struct i2c_client *client) { struct anx7625_data *platform; struct anx7625_platform_data *pdata; int ret = 0; struct device *dev = &client->dev; if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_I2C_BLOCK)) { DRM_DEV_ERROR(dev, "anx7625's i2c bus doesn't support\n"); return -ENODEV; } platform = devm_kzalloc(dev, sizeof(*platform), GFP_KERNEL); if (!platform) { DRM_DEV_ERROR(dev, "fail to allocate driver data\n"); return -ENOMEM; } pdata = &platform->pdata; platform->client = client; i2c_set_clientdata(client, platform); pdata->supplies[0].supply = "vdd10"; pdata->supplies[1].supply = "vdd18"; pdata->supplies[2].supply = "vdd33"; ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(pdata->supplies), pdata->supplies); if (ret) { DRM_DEV_ERROR(dev, "fail to get power supplies: %d\n", ret); return ret; } anx7625_init_gpio(platform); mutex_init(&platform->lock); mutex_init(&platform->hdcp_wq_lock); INIT_DELAYED_WORK(&platform->hdcp_work, hdcp_check_work_func); platform->hdcp_workqueue = create_workqueue("hdcp workqueue"); if (!platform->hdcp_workqueue) { dev_err(dev, "fail to create work queue\n"); ret = -ENOMEM; return ret; } platform->pdata.intp_irq = client->irq; if (platform->pdata.intp_irq) { INIT_WORK(&platform->work, anx7625_work_func); platform->workqueue = alloc_workqueue("anx7625_work", WQ_FREEZABLE | WQ_MEM_RECLAIM, 1); if (!platform->workqueue) { DRM_DEV_ERROR(dev, "fail to create work queue\n"); ret = -ENOMEM; goto free_hdcp_wq; } ret = devm_request_threaded_irq(dev, platform->pdata.intp_irq, NULL, anx7625_intr_hpd_isr, IRQF_TRIGGER_FALLING | IRQF_ONESHOT, "anx7625-intp", platform); if (ret) { DRM_DEV_ERROR(dev, "fail to request irq\n"); goto free_wq; } } platform->aux.name = "anx7625-aux"; platform->aux.dev = dev; platform->aux.transfer = anx7625_aux_transfer; platform->aux.wait_hpd_asserted = anx7625_wait_hpd_asserted; drm_dp_aux_init(&platform->aux); if (anx7625_register_i2c_dummy_clients(platform, client) != 0) { ret = -ENOMEM; DRM_DEV_ERROR(dev, "fail to reserve I2C bus.\n"); goto free_wq; } pm_runtime_enable(dev); pm_runtime_set_autosuspend_delay(dev, 1000); pm_runtime_use_autosuspend(dev); pm_suspend_ignore_children(dev, true); ret = devm_add_action_or_reset(dev, anx7625_runtime_disable, dev); if (ret) goto free_wq; devm_of_dp_aux_populate_ep_devices(&platform->aux); ret = anx7625_parse_dt(dev, pdata); if (ret) { if (ret != -EPROBE_DEFER) DRM_DEV_ERROR(dev, "fail to parse DT : %d\n", ret); goto free_wq; } if (!platform->pdata.low_power_mode) { anx7625_disable_pd_protocol(platform); pm_runtime_get_sync(dev); _anx7625_hpd_polling(platform, 5000 * 100); } /* Add work function */ if (platform->pdata.intp_irq) queue_work(platform->workqueue, &platform->work); platform->bridge.funcs = &anx7625_bridge_funcs; platform->bridge.of_node = client->dev.of_node; if (!anx7625_of_panel_on_aux_bus(&client->dev)) platform->bridge.ops |= DRM_BRIDGE_OP_EDID; if (!platform->pdata.panel_bridge) platform->bridge.ops |= DRM_BRIDGE_OP_HPD | DRM_BRIDGE_OP_DETECT; platform->bridge.type = platform->pdata.panel_bridge ? DRM_MODE_CONNECTOR_eDP : DRM_MODE_CONNECTOR_DisplayPort; drm_bridge_add(&platform->bridge); if (!platform->pdata.is_dpi) { ret = anx7625_attach_dsi(platform); if (ret) { DRM_DEV_ERROR(dev, "Fail to attach to dsi : %d\n", ret); goto unregister_bridge; } } if (platform->pdata.audio_en) anx7625_register_audio(dev, platform); DRM_DEV_DEBUG_DRIVER(dev, "probe done\n"); return 0; unregister_bridge: drm_bridge_remove(&platform->bridge); if (!platform->pdata.low_power_mode) pm_runtime_put_sync_suspend(&client->dev); free_wq: if (platform->workqueue) destroy_workqueue(platform->workqueue); free_hdcp_wq: if (platform->hdcp_workqueue) destroy_workqueue(platform->hdcp_workqueue); return ret; } static void anx7625_i2c_remove(struct i2c_client *client) { struct anx7625_data *platform = i2c_get_clientdata(client); drm_bridge_remove(&platform->bridge); if (platform->pdata.intp_irq) destroy_workqueue(platform->workqueue); if (platform->hdcp_workqueue) { cancel_delayed_work(&platform->hdcp_work); flush_workqueue(platform->hdcp_workqueue); destroy_workqueue(platform->hdcp_workqueue); } if (!platform->pdata.low_power_mode) pm_runtime_put_sync_suspend(&client->dev); if (platform->pdata.audio_en) anx7625_unregister_audio(platform); } static const struct i2c_device_id anx7625_id[] = { {"anx7625", 0}, {} }; MODULE_DEVICE_TABLE(i2c, anx7625_id); static const struct of_device_id anx_match_table[] = { {.compatible = "analogix,anx7625",}, {}, }; MODULE_DEVICE_TABLE(of, anx_match_table); static struct i2c_driver anx7625_driver = { .driver = { .name = "anx7625", .of_match_table = anx_match_table, .pm = &anx7625_pm_ops, }, .probe_new = anx7625_i2c_probe, .remove = anx7625_i2c_remove, .id_table = anx7625_id, }; module_i2c_driver(anx7625_driver); MODULE_DESCRIPTION("MIPI2DP anx7625 driver"); MODULE_AUTHOR("Xin Ji <xji@analogixsemi.com>"); MODULE_LICENSE("GPL v2"); MODULE_VERSION(ANX7625_DRV_VERSION);
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