// SPDX-License-Identifier: GPL-2.0 #include #include #include #include #include #include #include #include "ast_drv.h" MODULE_FIRMWARE("ast_dp501_fw.bin"); static void ast_release_firmware(void *data) { struct ast_device *ast = data; release_firmware(ast->dp501_fw); ast->dp501_fw = NULL; } static int ast_load_dp501_microcode(struct ast_device *ast) { struct drm_device *dev = &ast->base; int ret; ret = request_firmware(&ast->dp501_fw, "ast_dp501_fw.bin", dev->dev); if (ret) return ret; return devm_add_action_or_reset(dev->dev, ast_release_firmware, ast); } static void send_ack(struct ast_device *ast) { u8 sendack; sendack = ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0x9b, 0xff); sendack |= 0x80; ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0x9b, 0x00, sendack); } static void send_nack(struct ast_device *ast) { u8 sendack; sendack = ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0x9b, 0xff); sendack &= ~0x80; ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0x9b, 0x00, sendack); } static bool wait_ack(struct ast_device *ast) { u8 waitack; u32 retry = 0; do { waitack = ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0xd2, 0xff); waitack &= 0x80; udelay(100); } while ((!waitack) && (retry++ < 1000)); if (retry < 1000) return true; else return false; } static bool wait_nack(struct ast_device *ast) { u8 waitack; u32 retry = 0; do { waitack = ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0xd2, 0xff); waitack &= 0x80; udelay(100); } while ((waitack) && (retry++ < 1000)); if (retry < 1000) return true; else return false; } static void set_cmd_trigger(struct ast_device *ast) { ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0x9b, ~0x40, 0x40); } static void clear_cmd_trigger(struct ast_device *ast) { ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0x9b, ~0x40, 0x00); } #if 0 static bool wait_fw_ready(struct ast_device *ast) { u8 waitready; u32 retry = 0; do { waitready = ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0xd2, 0xff); waitready &= 0x40; udelay(100); } while ((!waitready) && (retry++ < 1000)); if (retry < 1000) return true; else return false; } #endif static bool ast_write_cmd(struct ast_device *ast, u8 data) { int retry = 0; if (wait_nack(ast)) { send_nack(ast); ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0x9a, 0x00, data); send_ack(ast); set_cmd_trigger(ast); do { if (wait_ack(ast)) { clear_cmd_trigger(ast); send_nack(ast); return true; } } while (retry++ < 100); } clear_cmd_trigger(ast); send_nack(ast); return false; } static bool ast_write_data(struct ast_device *ast, u8 data) { if (wait_nack(ast)) { send_nack(ast); ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0x9a, 0x00, data); send_ack(ast); if (wait_ack(ast)) { send_nack(ast); return true; } } send_nack(ast); return false; } #if 0 static bool ast_read_data(struct drm_device *dev, u8 *data) { struct ast_device *ast = to_ast_device(dev); u8 tmp; *data = 0; if (wait_ack(ast) == false) return false; tmp = ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0xd3, 0xff); *data = tmp; if (wait_nack(ast) == false) { send_nack(ast); return false; } send_nack(ast); return true; } static void clear_cmd(struct ast_device *ast) { send_nack(ast); ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0x9a, 0x00, 0x00); } #endif static void ast_set_dp501_video_output(struct ast_device *ast, u8 mode) { ast_write_cmd(ast, 0x40); ast_write_data(ast, mode); msleep(10); } static u32 get_fw_base(struct ast_device *ast) { return ast_mindwm(ast, 0x1e6e2104) & 0x7fffffff; } bool ast_backup_fw(struct ast_device *ast, u8 *addr, u32 size) { u32 i, data; u32 boot_address; if (ast->config_mode != ast_use_p2a) return false; data = ast_mindwm(ast, 0x1e6e2100) & 0x01; if (data) { boot_address = get_fw_base(ast); for (i = 0; i < size; i += 4) *(u32 *)(addr + i) = ast_mindwm(ast, boot_address + i); return true; } return false; } static bool ast_launch_m68k(struct ast_device *ast) { u32 i, data, len = 0; u32 boot_address; u8 *fw_addr = NULL; u8 jreg; if (ast->config_mode != ast_use_p2a) return false; data = ast_mindwm(ast, 0x1e6e2100) & 0x01; if (!data) { if (ast->dp501_fw_addr) { fw_addr = ast->dp501_fw_addr; len = 32*1024; } else { if (!ast->dp501_fw && ast_load_dp501_microcode(ast) < 0) return false; fw_addr = (u8 *)ast->dp501_fw->data; len = ast->dp501_fw->size; } /* Get BootAddress */ ast_moutdwm(ast, 0x1e6e2000, 0x1688a8a8); data = ast_mindwm(ast, 0x1e6e0004); switch (data & 0x03) { case 0: boot_address = 0x44000000; break; default: case 1: boot_address = 0x48000000; break; case 2: boot_address = 0x50000000; break; case 3: boot_address = 0x60000000; break; } boot_address -= 0x200000; /* -2MB */ /* copy image to buffer */ for (i = 0; i < len; i += 4) { data = *(u32 *)(fw_addr + i); ast_moutdwm(ast, boot_address + i, data); } /* Init SCU */ ast_moutdwm(ast, 0x1e6e2000, 0x1688a8a8); /* Launch FW */ ast_moutdwm(ast, 0x1e6e2104, 0x80000000 + boot_address); ast_moutdwm(ast, 0x1e6e2100, 1); /* Update Scratch */ data = ast_mindwm(ast, 0x1e6e2040) & 0xfffff1ff; /* D[11:9] = 100b: UEFI handling */ data |= 0x800; ast_moutdwm(ast, 0x1e6e2040, data); jreg = ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0x99, 0xfc); /* D[1:0]: Reserved Video Buffer */ jreg |= 0x02; ast_set_index_reg(ast, AST_IO_VGACRI, 0x99, jreg); } return true; } static bool ast_dp501_is_connected(struct ast_device *ast) { u32 boot_address, offset, data; if (ast->config_mode == ast_use_p2a) { boot_address = get_fw_base(ast); /* validate FW version */ offset = AST_DP501_GBL_VERSION; data = ast_mindwm(ast, boot_address + offset); if ((data & AST_DP501_FW_VERSION_MASK) != AST_DP501_FW_VERSION_1) return false; /* validate PnP Monitor */ offset = AST_DP501_PNPMONITOR; data = ast_mindwm(ast, boot_address + offset); if (!(data & AST_DP501_PNP_CONNECTED)) return false; } else { if (!ast->dp501_fw_buf) return false; /* dummy read */ offset = 0x0000; data = readl(ast->dp501_fw_buf + offset); /* validate FW version */ offset = AST_DP501_GBL_VERSION; data = readl(ast->dp501_fw_buf + offset); if ((data & AST_DP501_FW_VERSION_MASK) != AST_DP501_FW_VERSION_1) return false; /* validate PnP Monitor */ offset = AST_DP501_PNPMONITOR; data = readl(ast->dp501_fw_buf + offset); if (!(data & AST_DP501_PNP_CONNECTED)) return false; } return true; } static int ast_dp512_read_edid_block(void *data, u8 *buf, unsigned int block, size_t len) { struct ast_device *ast = data; size_t rdlen = round_up(len, 4); u32 i, boot_address, offset, ediddata; if (block > (512 / EDID_LENGTH)) return -EIO; offset = AST_DP501_EDID_DATA + block * EDID_LENGTH; if (ast->config_mode == ast_use_p2a) { boot_address = get_fw_base(ast); for (i = 0; i < rdlen; i += 4) { ediddata = ast_mindwm(ast, boot_address + offset + i); memcpy(buf, &ediddata, min((len - i), 4)); buf += 4; } } else { for (i = 0; i < rdlen; i += 4) { ediddata = readl(ast->dp501_fw_buf + offset + i); memcpy(buf, &ediddata, min((len - i), 4)); buf += 4; } } return true; } static bool ast_init_dvo(struct ast_device *ast) { u8 jreg; u32 data; ast_write32(ast, 0xf004, 0x1e6e0000); ast_write32(ast, 0xf000, 0x1); ast_write32(ast, 0x12000, 0x1688a8a8); jreg = ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0xd0, 0xff); if (!(jreg & 0x80)) { /* Init SCU DVO Settings */ data = ast_read32(ast, 0x12008); /* delay phase */ data &= 0xfffff8ff; data |= 0x00000500; ast_write32(ast, 0x12008, data); if (IS_AST_GEN4(ast)) { data = ast_read32(ast, 0x12084); /* multi-pins for DVO single-edge */ data |= 0xfffe0000; ast_write32(ast, 0x12084, data); data = ast_read32(ast, 0x12088); /* multi-pins for DVO single-edge */ data |= 0x000fffff; ast_write32(ast, 0x12088, data); data = ast_read32(ast, 0x12090); /* multi-pins for DVO single-edge */ data &= 0xffffffcf; data |= 0x00000020; ast_write32(ast, 0x12090, data); } else { /* AST GEN5+ */ data = ast_read32(ast, 0x12088); /* multi-pins for DVO single-edge */ data |= 0x30000000; ast_write32(ast, 0x12088, data); data = ast_read32(ast, 0x1208c); /* multi-pins for DVO single-edge */ data |= 0x000000cf; ast_write32(ast, 0x1208c, data); data = ast_read32(ast, 0x120a4); /* multi-pins for DVO single-edge */ data |= 0xffff0000; ast_write32(ast, 0x120a4, data); data = ast_read32(ast, 0x120a8); /* multi-pins for DVO single-edge */ data |= 0x0000000f; ast_write32(ast, 0x120a8, data); data = ast_read32(ast, 0x12094); /* multi-pins for DVO single-edge */ data |= 0x00000002; ast_write32(ast, 0x12094, data); } } /* Force to DVO */ data = ast_read32(ast, 0x1202c); data &= 0xfffbffff; ast_write32(ast, 0x1202c, data); /* Init VGA DVO Settings */ ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0xa3, 0xcf, 0x80); return true; } static void ast_init_analog(struct ast_device *ast) { u32 data; /* * Set DAC source to VGA mode in SCU2C via the P2A * bridge. First configure the P2U to target the SCU * in case it isn't at this stage. */ ast_write32(ast, 0xf004, 0x1e6e0000); ast_write32(ast, 0xf000, 0x1); /* Then unlock the SCU with the magic password */ ast_write32(ast, 0x12000, 0x1688a8a8); ast_write32(ast, 0x12000, 0x1688a8a8); ast_write32(ast, 0x12000, 0x1688a8a8); /* Finally, clear bits [17:16] of SCU2c */ data = ast_read32(ast, 0x1202c); data &= 0xfffcffff; ast_write32(ast, 0, data); /* Disable DVO */ ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0xa3, 0xcf, 0x00); } void ast_init_3rdtx(struct ast_device *ast) { u8 vgacrd1; if (IS_AST_GEN4(ast) || IS_AST_GEN5(ast)) { vgacrd1 = ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0xd1, AST_IO_VGACRD1_TX_TYPE_MASK); switch (vgacrd1) { case AST_IO_VGACRD1_TX_SIL164_VBIOS: ast_init_dvo(ast); break; case AST_IO_VGACRD1_TX_DP501_VBIOS: ast_launch_m68k(ast); break; case AST_IO_VGACRD1_TX_FW_EMBEDDED_FW: ast_init_dvo(ast); break; default: if (ast->tx_chip == AST_TX_SIL164) ast_init_dvo(ast); else ast_init_analog(ast); } } } /* * Encoder */ static const struct drm_encoder_funcs ast_dp501_encoder_funcs = { .destroy = drm_encoder_cleanup, }; static void ast_dp501_encoder_helper_atomic_enable(struct drm_encoder *encoder, struct drm_atomic_state *state) { struct ast_device *ast = to_ast_device(encoder->dev); ast_set_dp501_video_output(ast, 1); } static void ast_dp501_encoder_helper_atomic_disable(struct drm_encoder *encoder, struct drm_atomic_state *state) { struct ast_device *ast = to_ast_device(encoder->dev); ast_set_dp501_video_output(ast, 0); } static const struct drm_encoder_helper_funcs ast_dp501_encoder_helper_funcs = { .atomic_enable = ast_dp501_encoder_helper_atomic_enable, .atomic_disable = ast_dp501_encoder_helper_atomic_disable, }; /* * Connector */ static int ast_dp501_connector_helper_get_modes(struct drm_connector *connector) { struct ast_connector *ast_connector = to_ast_connector(connector); int count; if (ast_connector->physical_status == connector_status_connected) { struct ast_device *ast = to_ast_device(connector->dev); const struct drm_edid *drm_edid; drm_edid = drm_edid_read_custom(connector, ast_dp512_read_edid_block, ast); drm_edid_connector_update(connector, drm_edid); count = drm_edid_connector_add_modes(connector); drm_edid_free(drm_edid); } else { drm_edid_connector_update(connector, NULL); /* * There's no EDID data without a connected monitor. Set BMC- * compatible modes in this case. The XGA default resolution * should work well for all BMCs. */ count = drm_add_modes_noedid(connector, 4096, 4096); if (count) drm_set_preferred_mode(connector, 1024, 768); } return count; } static int ast_dp501_connector_helper_detect_ctx(struct drm_connector *connector, struct drm_modeset_acquire_ctx *ctx, bool force) { struct ast_connector *ast_connector = to_ast_connector(connector); struct ast_device *ast = to_ast_device(connector->dev); enum drm_connector_status status = connector_status_disconnected; if (ast_dp501_is_connected(ast)) status = connector_status_connected; if (status != ast_connector->physical_status) ++connector->epoch_counter; ast_connector->physical_status = status; return connector_status_connected; } static const struct drm_connector_helper_funcs ast_dp501_connector_helper_funcs = { .get_modes = ast_dp501_connector_helper_get_modes, .detect_ctx = ast_dp501_connector_helper_detect_ctx, }; static const struct drm_connector_funcs ast_dp501_connector_funcs = { .reset = drm_atomic_helper_connector_reset, .fill_modes = drm_helper_probe_single_connector_modes, .destroy = drm_connector_cleanup, .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, }; /* * Output */ int ast_dp501_output_init(struct ast_device *ast) { struct drm_device *dev = &ast->base; struct drm_crtc *crtc = &ast->crtc; struct drm_encoder *encoder; struct ast_connector *ast_connector; struct drm_connector *connector; int ret; /* encoder */ encoder = &ast->output.dp501.encoder; ret = drm_encoder_init(dev, encoder, &ast_dp501_encoder_funcs, DRM_MODE_ENCODER_TMDS, NULL); if (ret) return ret; drm_encoder_helper_add(encoder, &ast_dp501_encoder_helper_funcs); encoder->possible_crtcs = drm_crtc_mask(crtc); /* connector */ ast_connector = &ast->output.dp501.connector; connector = &ast_connector->base; ret = drm_connector_init(dev, connector, &ast_dp501_connector_funcs, DRM_MODE_CONNECTOR_DisplayPort); if (ret) return ret; drm_connector_helper_add(connector, &ast_dp501_connector_helper_funcs); connector->interlace_allowed = 0; connector->doublescan_allowed = 0; connector->polled = DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT; ast_connector->physical_status = connector->status; ret = drm_connector_attach_encoder(connector, encoder); if (ret) return ret; return 0; }