Orange Pi5 kernel

/*
 * 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 <linux/err.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/spinlock.h>
#include <linux/v4l2-dv-timings.h>
#include <linux/of_graph.h>
 
#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
 
spinlock_t 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 int vpif_probe(struct platform_device *pdev)
{
<------>static struct resource	*res, *res_irq;
<------>struct platform_device *pdev_capture, *pdev_display;
<------>struct device_node *endpoint = NULL;
<------>int ret;
 
<------>res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
<------>vpif_base = devm_ioremap_resource(&pdev->dev, res);
<------>if (IS_ERR(vpif_base))
<------><------>return PTR_ERR(vpif_base);
 
<------>pm_runtime_enable(&pdev->dev);
<------>pm_runtime_get(&pdev->dev);
 
<------>spin_lock_init(&vpif_lock);
<------>dev_info(&pdev->dev, "vpif probe success\n");
 
<------>/*
<------> * 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_next_endpoint(pdev->dev.of_node,
<------><------><------><------><------>      endpoint);
<------>if (!endpoint)
<------><------>return 0;
 
<------>/*
<------> * For DT platforms, manually create platform_devices for
<------> * capture/display drivers.
<------> */
<------>res_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
<------>if (!res_irq) {
<------><------>dev_warn(&pdev->dev, "Missing IRQ resource.\n");
<------><------>ret = -EINVAL;
<------><------>goto err_put_rpm;
<------>}
 
<------>pdev_capture = devm_kzalloc(&pdev->dev, sizeof(*pdev_capture),
<------><------><------><------>    GFP_KERNEL);
<------>if (pdev_capture) {
<------><------>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;
<------><------>platform_device_register(pdev_capture);
<------>} else {
<------><------>dev_warn(&pdev->dev, "Unable to allocate memory for pdev_capture.\n");
<------>}
 
<------>pdev_display = devm_kzalloc(&pdev->dev, sizeof(*pdev_display),
<------><------><------><------>    GFP_KERNEL);
<------>if (pdev_display) {
<------><------>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;
<------><------>platform_device_register(pdev_display);
<------>} else {
<------><------>dev_warn(&pdev->dev, "Unable to allocate memory for pdev_display.\n");
<------>}
 
<------>return 0;
 
err_put_rpm:
<------>pm_runtime_put(&pdev->dev);
<------>pm_runtime_disable(&pdev->dev);
 
<------>return ret;
}
 
static int vpif_remove(struct platform_device *pdev)
{
<------>pm_runtime_put(&pdev->dev);
<------>pm_runtime_disable(&pdev->dev);
<------>return 0;
}
 
#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);