/* * vpif - Video Port Interface driver * VPIF is a receiver and transmitter for video data. It has two channels(0, 1) * that receiving video byte stream and two channels(2, 3) for video output. * The hardware supports SDTV, HDTV formats, raw data capture. * Currently, the driver supports NTSC and PAL standards. * * Copyright (C) 2009 Texas Instruments Incorporated - https://www.ti.com/ * * 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 version 2. * * This program is distributed .as is. WITHOUT ANY WARRANTY of any * kind, whether express or implied; without even the implied warranty * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #include #include #include #include #include #include #include #include #include #include #include #include #include "vpif.h" MODULE_DESCRIPTION("TI DaVinci Video Port Interface driver"); MODULE_LICENSE("GPL"); #define VPIF_DRIVER_NAME "vpif" MODULE_ALIAS("platform:" VPIF_DRIVER_NAME); #define VPIF_CH0_MAX_MODES 22 #define VPIF_CH1_MAX_MODES 2 #define VPIF_CH2_MAX_MODES 15 #define VPIF_CH3_MAX_MODES 2 struct vpif_data { struct platform_device *capture; struct platform_device *display; }; DEFINE_SPINLOCK(vpif_lock); EXPORT_SYMBOL_GPL(vpif_lock); void __iomem *vpif_base; EXPORT_SYMBOL_GPL(vpif_base); /* * vpif_ch_params: video standard configuration parameters for vpif * * The table must include all presets from supported subdevices. */ const struct vpif_channel_config_params vpif_ch_params[] = { /* HDTV formats */ { .name = "480p59_94", .width = 720, .height = 480, .frm_fmt = 1, .ycmux_mode = 0, .eav2sav = 138-8, .sav2eav = 720, .l1 = 1, .l3 = 43, .l5 = 523, .vsize = 525, .capture_format = 0, .vbi_supported = 0, .hd_sd = 1, .dv_timings = V4L2_DV_BT_CEA_720X480P59_94, }, { .name = "576p50", .width = 720, .height = 576, .frm_fmt = 1, .ycmux_mode = 0, .eav2sav = 144-8, .sav2eav = 720, .l1 = 1, .l3 = 45, .l5 = 621, .vsize = 625, .capture_format = 0, .vbi_supported = 0, .hd_sd = 1, .dv_timings = V4L2_DV_BT_CEA_720X576P50, }, { .name = "720p50", .width = 1280, .height = 720, .frm_fmt = 1, .ycmux_mode = 0, .eav2sav = 700-8, .sav2eav = 1280, .l1 = 1, .l3 = 26, .l5 = 746, .vsize = 750, .capture_format = 0, .vbi_supported = 0, .hd_sd = 1, .dv_timings = V4L2_DV_BT_CEA_1280X720P50, }, { .name = "720p60", .width = 1280, .height = 720, .frm_fmt = 1, .ycmux_mode = 0, .eav2sav = 370 - 8, .sav2eav = 1280, .l1 = 1, .l3 = 26, .l5 = 746, .vsize = 750, .capture_format = 0, .vbi_supported = 0, .hd_sd = 1, .dv_timings = V4L2_DV_BT_CEA_1280X720P60, }, { .name = "1080I50", .width = 1920, .height = 1080, .frm_fmt = 0, .ycmux_mode = 0, .eav2sav = 720 - 8, .sav2eav = 1920, .l1 = 1, .l3 = 21, .l5 = 561, .l7 = 563, .l9 = 584, .l11 = 1124, .vsize = 1125, .capture_format = 0, .vbi_supported = 0, .hd_sd = 1, .dv_timings = V4L2_DV_BT_CEA_1920X1080I50, }, { .name = "1080I60", .width = 1920, .height = 1080, .frm_fmt = 0, .ycmux_mode = 0, .eav2sav = 280 - 8, .sav2eav = 1920, .l1 = 1, .l3 = 21, .l5 = 561, .l7 = 563, .l9 = 584, .l11 = 1124, .vsize = 1125, .capture_format = 0, .vbi_supported = 0, .hd_sd = 1, .dv_timings = V4L2_DV_BT_CEA_1920X1080I60, }, { .name = "1080p60", .width = 1920, .height = 1080, .frm_fmt = 1, .ycmux_mode = 0, .eav2sav = 280 - 8, .sav2eav = 1920, .l1 = 1, .l3 = 42, .l5 = 1122, .vsize = 1125, .capture_format = 0, .vbi_supported = 0, .hd_sd = 1, .dv_timings = V4L2_DV_BT_CEA_1920X1080P60, }, /* SDTV formats */ { .name = "NTSC_M", .width = 720, .height = 480, .frm_fmt = 0, .ycmux_mode = 1, .eav2sav = 268, .sav2eav = 1440, .l1 = 1, .l3 = 23, .l5 = 263, .l7 = 266, .l9 = 286, .l11 = 525, .vsize = 525, .capture_format = 0, .vbi_supported = 1, .hd_sd = 0, .stdid = V4L2_STD_525_60, }, { .name = "PAL_BDGHIK", .width = 720, .height = 576, .frm_fmt = 0, .ycmux_mode = 1, .eav2sav = 280, .sav2eav = 1440, .l1 = 1, .l3 = 23, .l5 = 311, .l7 = 313, .l9 = 336, .l11 = 624, .vsize = 625, .capture_format = 0, .vbi_supported = 1, .hd_sd = 0, .stdid = V4L2_STD_625_50, }, }; EXPORT_SYMBOL_GPL(vpif_ch_params); const unsigned int vpif_ch_params_count = ARRAY_SIZE(vpif_ch_params); EXPORT_SYMBOL_GPL(vpif_ch_params_count); static inline void vpif_wr_bit(u32 reg, u32 bit, u32 val) { if (val) vpif_set_bit(reg, bit); else vpif_clr_bit(reg, bit); } /* This structure is used to keep track of VPIF size register's offsets */ struct vpif_registers { u32 h_cfg, v_cfg_00, v_cfg_01, v_cfg_02, v_cfg, ch_ctrl; u32 line_offset, vanc0_strt, vanc0_size, vanc1_strt; u32 vanc1_size, width_mask, len_mask; u8 max_modes; }; static const struct vpif_registers vpifregs[VPIF_NUM_CHANNELS] = { /* Channel0 */ { VPIF_CH0_H_CFG, VPIF_CH0_V_CFG_00, VPIF_CH0_V_CFG_01, VPIF_CH0_V_CFG_02, VPIF_CH0_V_CFG_03, VPIF_CH0_CTRL, VPIF_CH0_IMG_ADD_OFST, 0, 0, 0, 0, 0x1FFF, 0xFFF, VPIF_CH0_MAX_MODES, }, /* Channel1 */ { VPIF_CH1_H_CFG, VPIF_CH1_V_CFG_00, VPIF_CH1_V_CFG_01, VPIF_CH1_V_CFG_02, VPIF_CH1_V_CFG_03, VPIF_CH1_CTRL, VPIF_CH1_IMG_ADD_OFST, 0, 0, 0, 0, 0x1FFF, 0xFFF, VPIF_CH1_MAX_MODES, }, /* Channel2 */ { VPIF_CH2_H_CFG, VPIF_CH2_V_CFG_00, VPIF_CH2_V_CFG_01, VPIF_CH2_V_CFG_02, VPIF_CH2_V_CFG_03, VPIF_CH2_CTRL, VPIF_CH2_IMG_ADD_OFST, VPIF_CH2_VANC0_STRT, VPIF_CH2_VANC0_SIZE, VPIF_CH2_VANC1_STRT, VPIF_CH2_VANC1_SIZE, 0x7FF, 0x7FF, VPIF_CH2_MAX_MODES }, /* Channel3 */ { VPIF_CH3_H_CFG, VPIF_CH3_V_CFG_00, VPIF_CH3_V_CFG_01, VPIF_CH3_V_CFG_02, VPIF_CH3_V_CFG_03, VPIF_CH3_CTRL, VPIF_CH3_IMG_ADD_OFST, VPIF_CH3_VANC0_STRT, VPIF_CH3_VANC0_SIZE, VPIF_CH3_VANC1_STRT, VPIF_CH3_VANC1_SIZE, 0x7FF, 0x7FF, VPIF_CH3_MAX_MODES }, }; /* vpif_set_mode_info: * This function is used to set horizontal and vertical config parameters * As per the standard in the channel, configure the values of L1, L3, * L5, L7 L9, L11 in VPIF Register , also write width and height */ static void vpif_set_mode_info(const struct vpif_channel_config_params *config, u8 channel_id, u8 config_channel_id) { u32 value; value = (config->eav2sav & vpifregs[config_channel_id].width_mask); value <<= VPIF_CH_LEN_SHIFT; value |= (config->sav2eav & vpifregs[config_channel_id].width_mask); regw(value, vpifregs[channel_id].h_cfg); value = (config->l1 & vpifregs[config_channel_id].len_mask); value <<= VPIF_CH_LEN_SHIFT; value |= (config->l3 & vpifregs[config_channel_id].len_mask); regw(value, vpifregs[channel_id].v_cfg_00); value = (config->l5 & vpifregs[config_channel_id].len_mask); value <<= VPIF_CH_LEN_SHIFT; value |= (config->l7 & vpifregs[config_channel_id].len_mask); regw(value, vpifregs[channel_id].v_cfg_01); value = (config->l9 & vpifregs[config_channel_id].len_mask); value <<= VPIF_CH_LEN_SHIFT; value |= (config->l11 & vpifregs[config_channel_id].len_mask); regw(value, vpifregs[channel_id].v_cfg_02); value = (config->vsize & vpifregs[config_channel_id].len_mask); regw(value, vpifregs[channel_id].v_cfg); } /* config_vpif_params * Function to set the parameters of a channel * Mainly modifies the channel ciontrol register * It sets frame format, yc mux mode */ static void config_vpif_params(struct vpif_params *vpifparams, u8 channel_id, u8 found) { const struct vpif_channel_config_params *config = &vpifparams->std_info; u32 value, ch_nip, reg; u8 start, end; int i; start = channel_id; end = channel_id + found; for (i = start; i < end; i++) { reg = vpifregs[i].ch_ctrl; if (channel_id < 2) ch_nip = VPIF_CAPTURE_CH_NIP; else ch_nip = VPIF_DISPLAY_CH_NIP; vpif_wr_bit(reg, ch_nip, config->frm_fmt); vpif_wr_bit(reg, VPIF_CH_YC_MUX_BIT, config->ycmux_mode); vpif_wr_bit(reg, VPIF_CH_INPUT_FIELD_FRAME_BIT, vpifparams->video_params.storage_mode); /* Set raster scanning SDR Format */ vpif_clr_bit(reg, VPIF_CH_SDR_FMT_BIT); vpif_wr_bit(reg, VPIF_CH_DATA_MODE_BIT, config->capture_format); if (channel_id > 1) /* Set the Pixel enable bit */ vpif_set_bit(reg, VPIF_DISPLAY_PIX_EN_BIT); else if (config->capture_format) { /* Set the polarity of various pins */ vpif_wr_bit(reg, VPIF_CH_FID_POLARITY_BIT, vpifparams->iface.fid_pol); vpif_wr_bit(reg, VPIF_CH_V_VALID_POLARITY_BIT, vpifparams->iface.vd_pol); vpif_wr_bit(reg, VPIF_CH_H_VALID_POLARITY_BIT, vpifparams->iface.hd_pol); value = regr(reg); /* Set data width */ value &= ~(0x3u << VPIF_CH_DATA_WIDTH_BIT); value |= ((vpifparams->params.data_sz) << VPIF_CH_DATA_WIDTH_BIT); regw(value, reg); } /* Write the pitch in the driver */ regw((vpifparams->video_params.hpitch), vpifregs[i].line_offset); } } /* vpif_set_video_params * This function is used to set video parameters in VPIF register */ int vpif_set_video_params(struct vpif_params *vpifparams, u8 channel_id) { const struct vpif_channel_config_params *config = &vpifparams->std_info; int found = 1; vpif_set_mode_info(config, channel_id, channel_id); if (!config->ycmux_mode) { /* YC are on separate channels (HDTV formats) */ vpif_set_mode_info(config, channel_id + 1, channel_id); found = 2; } config_vpif_params(vpifparams, channel_id, found); regw(0x80, VPIF_REQ_SIZE); regw(0x01, VPIF_EMULATION_CTRL); return found; } EXPORT_SYMBOL(vpif_set_video_params); void vpif_set_vbi_display_params(struct vpif_vbi_params *vbiparams, u8 channel_id) { u32 value; value = 0x3F8 & (vbiparams->hstart0); value |= 0x3FFFFFF & ((vbiparams->vstart0) << 16); regw(value, vpifregs[channel_id].vanc0_strt); value = 0x3F8 & (vbiparams->hstart1); value |= 0x3FFFFFF & ((vbiparams->vstart1) << 16); regw(value, vpifregs[channel_id].vanc1_strt); value = 0x3F8 & (vbiparams->hsize0); value |= 0x3FFFFFF & ((vbiparams->vsize0) << 16); regw(value, vpifregs[channel_id].vanc0_size); value = 0x3F8 & (vbiparams->hsize1); value |= 0x3FFFFFF & ((vbiparams->vsize1) << 16); regw(value, vpifregs[channel_id].vanc1_size); } EXPORT_SYMBOL(vpif_set_vbi_display_params); int vpif_channel_getfid(u8 channel_id) { return (regr(vpifregs[channel_id].ch_ctrl) & VPIF_CH_FID_MASK) >> VPIF_CH_FID_SHIFT; } EXPORT_SYMBOL(vpif_channel_getfid); static void vpif_pdev_release(struct device *dev) { struct platform_device *pdev = to_platform_device(dev); kfree(pdev); } static int vpif_probe(struct platform_device *pdev) { static struct resource res_irq; struct platform_device *pdev_capture, *pdev_display; struct device_node *endpoint = NULL; struct vpif_data *data; int ret; int irq; vpif_base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(vpif_base)) return PTR_ERR(vpif_base); data = kzalloc(sizeof(*data), GFP_KERNEL); if (!data) return -ENOMEM; platform_set_drvdata(pdev, data); pm_runtime_enable(&pdev->dev); pm_runtime_get(&pdev->dev); /* * If VPIF Node has endpoints, assume "new" DT support, * where capture and display drivers don't have DT nodes * so their devices need to be registered manually here * for their legacy platform_drivers to work. */ endpoint = of_graph_get_endpoint_by_regs(pdev->dev.of_node, 0, -1); if (!endpoint) return 0; of_node_put(endpoint); /* * For DT platforms, manually create platform_devices for * capture/display drivers. */ irq = platform_get_irq(pdev, 0); if (irq < 0) { ret = irq; goto err_put_rpm; } res_irq = DEFINE_RES_IRQ_NAMED(irq, of_node_full_name(pdev->dev.of_node)); res_irq.flags |= irq_get_trigger_type(irq); pdev_capture = kzalloc(sizeof(*pdev_capture), GFP_KERNEL); if (!pdev_capture) { ret = -ENOMEM; goto err_put_rpm; } pdev_capture->name = "vpif_capture"; pdev_capture->id = -1; pdev_capture->resource = &res_irq; pdev_capture->num_resources = 1; pdev_capture->dev.dma_mask = pdev->dev.dma_mask; pdev_capture->dev.coherent_dma_mask = pdev->dev.coherent_dma_mask; pdev_capture->dev.parent = &pdev->dev; pdev_capture->dev.release = vpif_pdev_release; ret = platform_device_register(pdev_capture); if (ret) goto err_put_pdev_capture; pdev_display = kzalloc(sizeof(*pdev_display), GFP_KERNEL); if (!pdev_display) { ret = -ENOMEM; goto err_put_pdev_capture; } pdev_display->name = "vpif_display"; pdev_display->id = -1; pdev_display->resource = &res_irq; pdev_display->num_resources = 1; pdev_display->dev.dma_mask = pdev->dev.dma_mask; pdev_display->dev.coherent_dma_mask = pdev->dev.coherent_dma_mask; pdev_display->dev.parent = &pdev->dev; pdev_display->dev.release = vpif_pdev_release; ret = platform_device_register(pdev_display); if (ret) goto err_put_pdev_display; data->capture = pdev_capture; data->display = pdev_display; return 0; err_put_pdev_display: platform_device_put(pdev_display); err_put_pdev_capture: platform_device_put(pdev_capture); err_put_rpm: pm_runtime_put(&pdev->dev); pm_runtime_disable(&pdev->dev); kfree(data); return ret; } static void vpif_remove(struct platform_device *pdev) { struct vpif_data *data = platform_get_drvdata(pdev); if (data->capture) platform_device_unregister(data->capture); if (data->display) platform_device_unregister(data->display); pm_runtime_put(&pdev->dev); pm_runtime_disable(&pdev->dev); kfree(data); } #ifdef CONFIG_PM static int vpif_suspend(struct device *dev) { pm_runtime_put(dev); return 0; } static int vpif_resume(struct device *dev) { pm_runtime_get(dev); return 0; } static const struct dev_pm_ops vpif_pm = { .suspend = vpif_suspend, .resume = vpif_resume, }; #define vpif_pm_ops (&vpif_pm) #else #define vpif_pm_ops NULL #endif #if IS_ENABLED(CONFIG_OF) static const struct of_device_id vpif_of_match[] = { { .compatible = "ti,da850-vpif", }, { /* sentinel */ }, }; MODULE_DEVICE_TABLE(of, vpif_of_match); #endif static struct platform_driver vpif_driver = { .driver = { .of_match_table = of_match_ptr(vpif_of_match), .name = VPIF_DRIVER_NAME, .pm = vpif_pm_ops, }, .remove = vpif_remove, .probe = vpif_probe, }; static void vpif_exit(void) { platform_driver_unregister(&vpif_driver); } static int __init vpif_init(void) { return platform_driver_register(&vpif_driver); } subsys_initcall(vpif_init); module_exit(vpif_exit);